FINGERPRINT SENSING DEVICE AND ELECTRONIC DEVICE INCLUDING SAME

Hereinafter, a preferred embodiment of the present invention with reference to the attached drawing shapes described as follows other.

Various embodiment of the present invention embodiment may be altered or various other forms can be in the form of a cylindrical form, and not the confined within the range of the present invention hereinafter described embodiment form. In addition, the present invention in the field of the present invention embodiment form are advantageously easier to average knowledge with which to more completely account for the ball number are disclosed. Thus, the shape and size of the elements in the drawing or the like can be more specifically for and apparatus description, same drawing into a display on a reaction be a identical elements.

Figure 1 shows a simple block of the present invention also represent one in the embodiment according to fingerprint sensing device are disclosed.

The reference also 1, fingerprint sensing device according to an embodiment of the present invention (10) sensor array (20), sensing circuit (30), and the circuit number (40) can be like. Sensor array (20) receiving user fingerprint can be under public affairs number input area, a plurality of node input area can be arranged. Sensing circuit (30) comprises a plurality of node to detect changes in capacitance can be. The circuit number (40) includes a sensing circuit for determining whether or not information is generated by using variations in capacitance fingerprint, fingerprint information compared to the previously stored user authentication information for authenticating the user substrate. The circuit number (40) includes a user authentication whether host (50) can be delivered. Host (50) includes a fingerprint sensing device (10) is mounted is formed on application (AP) or operational processing device (CPU) etc. disclosed. Or, in other in the embodiment, the circuit number (40) generating fingerprint information is only the host (50) 620, host (50) is fingerprint information of user authentication information for authenticating the user compared with disapproval.

Sensor array (20) included in the plurality of nodes, a plurality of drive electrodes and a plurality of sensing electrodes can be defined at the position each other. In a plurality of nodes, sensor array (20) adjacent to the user's fingerprint by variations in capacitance can be generated. The capacitance variation generated in a plurality of nodes, sensor array (20) produced in the vicinity of the fingerprint, the fingerprint can be determined by a trough and a distance differences.

Sensing circuit (30) comprises a plurality of electrodes for applying a drive signal to the driver (31), a plurality of nodes connected to the plurality of sensing capacitance change converted into voltage signals generated in the integration circuit (32), and an analog-to - digital converter (ADC, 33) can be like. Driver (31) a plurality of drive electrodes applies any driving signal, said driving signal sensor array (20) contained in the plurality of nodes to each other in a capacitance (Mutual Capacitance) can be generated. Sensor array (20) adjacent to the fingerprint, fingerprint of each of the plurality of nodes at different capacitance produced by bone and which, integration circuit (32) will detect the change can be.

Integration circuit (32) to the charge pump (Charge Pump) circuit or the like can be, sensor array (20) to detect changes in capacitance occurring on each node can be. In one embodiment, integration circuit (32) of the sensor element array (20) occurring on each node can form a stable electrostatic capacity detecting section. Integration circuit (32) produced by the voltage signal, analog - digital converter (33) in the form of sensing data number is converted to a digital signal by the circuit (40) can be delivered.

The circuit number (40) can be the operation logic, analog - digital converter (33) can be generating the fingerprint sensing data transport. Fingerprint data, sensor array (20) can be proximate features fingerprint information. The circuit number (40) includes said fingerprint data can be compared to the prestored reference fingerprint data for authenticating the user. In addition, number the circuit (40) includes a driver (31) of, e.g. driver (31) is a drive signal applied to timing, voltage level can be a leveling agent. The circuit number (40) includes a sensing circuit (30) into a single integrated circuit chip (IC) with ball number can be disclosed.

Host (50) includes a fingerprint sensing device (10) can be connected to enable communication, such as electronic device applications be a processor or processing device. Host (50) number is the circuit (40) receives the generated fingerprint information with or without authentication process, or the circuit number (40) pass user from can be manipulate perform operations. In one in the embodiment, sensing circuit (30) and number the circuit (40) includes, host (50) and one integrated circuit chip (IC) to ball number can also be disclosed.

In of the present invention in the embodiment, the circuit number (40) of the sensor element array (20) can be in a plurality of sampling region. A plurality of sampling region is sensor array (20) may be separated from each other in a plurality of regions, sensor array (20) including a plurality of nodes contained in only a part region of the disclosed. The circuit number (40) includes, a plurality of sampling areas in sensing circuit (30) generates a distribution data sensed by a sensing data acquired, each sampling regions can be compared with a predetermined reference distribution generate sensing data distribution. The circuit number (40) corresponding to said reference distribution is effective contact area as shown by the distribution data sensed by a sampling region can be judged.

Sensor array (20) partially fingerprint when touched, the remaining part of the fingerprint in contact with some of the plurality of sampling region fingerprint can contact the nail. The number of sampling region contact fingerprint on operating, sensor array (20) can execute a fingerprint information detecting data sensed by a total node included spontaneous nail can do. The, number the circuit (40) is to determine the number of sampling region contact effectively with fingerprints, obtain sensing data distribution in each sampling, to fingerprint the seal number represented as compared with a corresponding reference distribution contacts a distribution of data sensed by a fingerprint in effective contact can determine whether each sampled region. Reference distribution corresponding to the acquired distribution data sensed by a sampling region, the circuit number (40) can be effective contact by range.

The number of effective contact area is greater than a predetermined threshold number, the circuit number (40) of the sensor element array (20) applying a drive signal to all node, sensing circuit (30) can be acquired from the data sensed by a fingerprint information. And vice versa, i.e. effective contact area that are determined to be less than a threshold number of said region, the circuit number (40) of the sensor element array (20) can be converted into a standby mode. I.e., number the circuit (40) comprises a plurality of sampling area according to the number of valid data present in the contact area to the clip region, determine whether fingerprint information can be. Thus, fingerprint sensing device (10) the power dissipation in the upper and lower, error operation can be.

Figure 2 shows a fingerprint sensing device of the present invention also included one in the embodiment according to simple circuit represent sensor array are disclosed.

The reference 2 also, according to an embodiment of the present invention sensor array (20) comprises, extending direction (longitudinal direction of Figure 2) and a plurality of drive electrodes D1 provided decimeter number 1, number 2 number 1 direction (transverse direction of Figure 2) extending direction different from a plurality of sensing electrodes comprising S1 a-sn can be. A plurality of drive electrodes D1 provided decimeter and a plurality of sensing electrodes S1 a-sn intersect one another, a plurality of drive electrodes D1 provided decimeter and a plurality of sensing electrodes S1 a-sn variations in capacitance is generated by the point of intersection of a user's fingerprint can be defined by the plurality of node.

A plurality of drive electrodes D1 provided decimeter is driver (31) is a drive signal by a can be applied, the controller a plurality of sensing electrodes S1 a-sn (32) can be connected. To one in the embodiment, driver (31) each has a plurality of driving electrode D1 provided decimeter sequentially driving signal can be reduced, integration circuit (32) comprises a plurality of sensing electrodes S1 a-sn and, drive signals are applied to the driving electrode D1 provided decimeter from where to detect changes in capacitance can be.

In the embodiment according to fingerprint sensing device of the present invention is also 3a and 3b also describe one sampling region number which ball also are disclosed.

The reference priority 3a, sensor array (20) receiving user fingerprint input area includes a plurality of sub-areas (21 - 28) to an imaginary division can be. 3a also performs a region of 8 regions (21 - 28) divided to an imaginary e but, sub-areas (21 - 28) corresponds to a high number of can be small disclosed. A plurality of sub-areas (21 - 28) with the number of processors each have an area, the circuit number (40) can be determined by.

A plurality of sub-areas (21 - 28) is generated, the circuit number (40) respective regions (21 - 28) sampled in region (21S provided 28S) can be set. Sampling region (21S provided 28S) includes a sensor array (20) from the light source included in the plurality of nodes to detect changes in capacitance before, sensor array (20) normally fingerprint set to determine whether or not that the area can be touched. The circuit number (40) includes, sensing circuit (30) is sampling region (21S provided 28S) included in the data sensed by sensing a change in capacitance from a plurality of nodes so as to obtain a number [e[e] it will do be.

The circuit number (40) includes, sampling region (21S provided 28S) is obtained from a sensing data distribution can be compared with a reference distribution. Sensing data distribution, each video channel (21S provided 28S) obtained in sensing data according to the number of node to generate and be a inclination. On the other hand, reference distribution sensor array (20) contacts a seal number can be represented as the broadening data sensed by the fingerprint.

Sensor array (20) in contact with or a foreign matter other than the thumbprint, fingerprint or drying fingerprint when touched with moisture or many, data sensed by a distribution relative to a reference distribution in a particular direction or shifting (shiting), or may have particular interval in which the tendency. The circuit number (40) includes, sampling region (21S provided 28S) obtain particular interval distribution sensing data in other reference distribution such as indicating an aspect distribution when sufficient appears too, corresponding sampling region (21S provided 28S) can be fingerprint of contact which is operatively mounted to a decision. The circuit number (40) includes a fingerprint which is operatively mounted sampling region of contact that are determined to be (21S provided 28S) is greater than a predetermined number of threshold number, not normal contact whether fingerprint sensor array (20) can be stops the action of the. Thus, fingerprint sensing device (10) can be reduce power consumption.

Each video channel (21S provided 28S) in distribution is obtained from a sensing data, corresponding to a predetermined number of reference distribution determines sensing data distribution is greater than the threshold number, number the circuit (40) includes a fingerprint can be determined as normal contact. In this case, number the circuit (40) includes a fingerprint sensing device (10) can be of fingerprint sensing operation.

The reference gel layer 3b, sensor array (20 ') receiving user fingerprint input area includes a plurality of sub-areas (21' -28 ') can be divided to an imaginary. In the embodiment shown in 3b 3a also unlike on also, each sub-areas (21 '-28') among a plurality of nodes contained in the node can be selected randomly samples (SN1 provided SN8). Each sub also 3b (21 '-28') 6 (SN1 provided SN8) by modifying a sampling node selected in the e-but, each sub-areas (21 '-28') the number of selected sampling node (SN1 provided SN8) can be appropriately controlled.

In the embodiment of 3a also on similarly, number the circuit (40) includes a sensing circuit (30) the operation of sensing a change in capacitance and only sampled node number (SN1 provided SN8), sensing data can be. The circuit number (40) is acquired in each sampling node (SN1 provided SN8) compares to a preset reference distribution sensing distributions. Comparison result, corresponding to the number of distribution data sensed by a reference distribution number is greater than the predefined threshold value, the circuit number (40) of the sensor element array (20) and fingerprint identification to normal contact fingerprint sensing device (10) can be of fingerprint sensing operation.

Figure 10 shows a fingerprint sensing device of the present invention also in the embodiment according to operation of number 4 to also describe which distribution data sensed by one ball are disclosed.

Figure 9 shows a 4 to also speed array (20) various object number when contacting the circuit (40) is detected indicating a distribution of sensing data are disclosed. In Figure 9 to transverse shaft is also 4 sensing array (20) is detected at a node of the sensing data which represents the value of a, the longitudinal axes each sensing data value corresponds to the number of other nodes. In one in the embodiment, sensing data may be 8 bit of digital data, the 256 may have a value of between from 0.

Figure 4 first normally sensor array (20) contacts a sensing data distribution as to the thumbprint are disclosed. The reference also 4, normally when in contact number fingerprint the circuit (40) sensing distributions and number 3 section obtains the relatively centrally located (C) can be concentrated, number 1 and number 5 section (A, E) thereof can not detected in nearly sensing data. The circuit number (40) is, sensor array (20) contacts a normally transparent such as distribution of 4 also represented as well, reference distribution can be set. Sensor array (20) of an object is in contact, the circuit number (40) comprises a plurality of sampling region (21S provided 28S) or obtained from data sensed by a plurality of sampling node (SN1 provided SN8) 4 also compares the reference distribution similar distribution shown in the, effective contact area from the number of fingerprint sensor array (20) can be determine whether the effective input area of contact.

Figure 5 were identical moisture sensor array (20) appearing when contacting the distribution of sensing data are disclosed. The reference also 5, the distribution of wet thumbprint when in contact sensing data, (B) section can be concentrated in the number 2, number 4 and number 5 section (D, E) thereof can not detected in nearly sensing data. If this is not too much moisture if wet fingerprint information when the authentication operation continuously performed through a second contact, the circuit number (40) also 5 such as is shown in the reference distribution can be set one of sensing data distribution.

Figure 6 then dry fingerprint sensor array (20) appearing when contacting the distribution of sensing data are disclosed. 6 also reference surface, the distribution of data sensed by a dry section when in contact fingerprint can be concentrated (D) number 4, number 1 and number 2 section (A, B) thereof can not detected in nearly sensing data. Various user various fingerprint authentication of a user with normal condition can be fingerprint sensing device (10) for a number under public affairs, number the circuit (40) is dry when the fingerprint contact can be perform authentication operation. The, 6 such as also shown in the distribution of data sensed by also, the circuit number (40) by way of distribution can be set to one.

Figure 7 and the top surface of sensor array (20) appearing when contacting the distribution of sensing data are disclosed. The reference also 7, number 4 and number 5 (D, E) distributions of the sensing section can be concentrated, in particular, an optically sensing a maximum number number of node number 5 section (E) data can be located. The circuit number (40) is, sensor array (20) penetrating sensing data number 4 and number 5 (D, E) when the distribution is concentrated on a section, the top surface of the sensor array (20) determines that contact the fingerprint sensing device (10) or stops the action of the, fingerprint sensing device (10) can be delivered to the atmosphere.

Figure 8 such as water moisture sensor array (20) as to the distribution of data sensed by a contact are disclosed. Moisture sensor array (20) the contact, as also shown in the 8 while some nodes appears on the minimum and maximum of sensing data, as well as also shown in 4 to 7 also having distribution data sensed by a constant does not appear. The, number the circuit (40) includes, when the distribution of data sensed by a minimum absolute appearing too or maxima, a fingerprint contact normal is not between the received fingerprint sensing device (10) of fingerprint sensing operation executing all be.

Figure 9, much amount of moisture with fingerprint sensor array (20) when sensing distributions may appear in contact are disclosed. Determining the presence of large amounts of moisture, and the difference can be reduced and bone produced by of the fingerprint, the number 1 and number 2 as also shown in the distribution of data sensed by a section 9 (A, B) of the LGP is to fatigue might also. Also shown in the sensing data distribution also 5 9 shown in the sensing data distribution is compared, also shown in the number 1 and number 2 section 9 more distribution sensing data (A, B) can be sure that the centralized. In addition, 9 also shown in the sensing data distribution, also 5 is smaller than the distribution shown in the sensing data can be provided to prevent the subject appears to be.

In the case of much amount of moisture with fingerprint, fingerprint that the water contained in the water present as metal electrode filled with bone adjacent node can be connected to a variable capacitance. As a result, inter-node capacitance change variation produced by and is attached to a bone adjacent to the machine and also sensing data as shown in the 9 may have small value. In this case, number the circuit (40) is sensing data for authenticating the user using thereof can difficult. The, number the circuit (40) is also shown in the 9 such as sensing data distribution, setting the reference distribution thereof can.

Hereinafter, with reference to a fingerprint sensing device according to an embodiment of the present invention also 10 also 3a (10) describe more particularly an operation of less than 1000.

Sensor array (20) of an object contacting and capacitance change once created, the circuit number (40) of the sensor element array (20) of a plurality of sub-region (21 - 28) virtual partitioning, each sub-areas (21 - 28) sampled in region (21S provided 28S) can be set. Each video channel (21S provided 28S) can be a plurality of nodes.

Driver (31) includes a sampling region (21S provided 28S) supplies a drive signal to the, integration circuit (32) and ADC (33) includes a sampling region (21S provided 28S) from a plurality of nodes included in the detecting data sensed by a sensing a change in capacitance can be. Sensing data number the circuit (40) communicated, the circuit number (40) respective sampling region (21S provided 28S) each sensing data distribution can be obtain. To one in the embodiment, data sensed by a distribution 10 also can be expressed as shown in the histogram, the circuit number (40) respective sampling region (21S provided 28S) for sensing data distribution can be obtain. I.e., in the embodiment shown in the 3a also in, number the circuit (40) is of sensing data distribution can be obtain total 8.

10 also reference surface, the circuit number (40) having a plurality of sampling region (21S provided 28S) obtaining sensing data from each histogram distribution can be expressed. The horizontal axis sensing data values have exhibits, axis sensing data value is the number of nodes. I.e., in the embodiment shown in in 10 also, the number of the nodes 112 or more controls a flow rate of 120 hereinafter data value can be judged.

The circuit number (40) includes sensing data distribution can be set valid data present in the section. Sensing noise in section remaining after the section number distributions and effective interval has a stand-alone can be, in one embodiment data sensed by a distribution histogram expression in each field data generation noise interval can be set high and low 5%. The circuit number (40) is set range of noise interval, fingerprint sensing device (10) according to the operating environment of the first liquid drop may be are disclosed. 10 also reference surface, the circuit number (40) during changes of the number of nodes, each node corresponding to a node corresponding to the number 1 and number 2 upper 5% 5% lower noise interval can be set.

Effective interval is set, the circuit number (40) is effective section shown in sensing data distribution, compares reference distribution. Said reference distribution, as described with reference to also 4 to 6 also can be at least one of a plurality of reference distribution. Fingerprint sensor array (20) contacting the thread number even when, according to the user's different sensing data distribution is detected as shown in the 6 also 4 also rotates, the circuit number (40) includes a plurality of reference distribution reflecting various environmental different, effective sensing data and outputs in distribution can be compared.

The circuit number (40) includes sensing data distribution, valid also corresponds to the distribution criteria such as shown in the 4 in Epon, acquired the distribution data sensed by a corresponding sampling region (21S provided 28S) can be effective contact range. The circuit number (40) respective sampling region (21S provided 28S) obtained in each reference distribution compared to a plurality of sensing data distribution, the number of effective contact area is greater than a predetermined threshold number, normally fingerprint sensor array (20) determines that contact can be. Said threshold number number the circuit (40) can be a value which is pre-set, can be modified by user disapproval. To one in the embodiment, threshold number said sampling region (21S provided 28S) exceeds a total number can be set to a value of 60%. I.e., 3a can be set to a value of 5 or more also in said threshold number 8 hereinafter. Hereinafter, also 11a to 11f together also through a browser-sensors other.

In the embodiment according to the fingerprint sensing device of the present invention also 11a to 11f also describe operation of one ball number which also are disclosed.

Also 11a are symmetrically 11b is, fingerprint sensor array (20) has not indicating sufficient contact area also are disclosed. The reference also 11a, sensor array (20) placed on top of a sampling region number 1 to number 4 (21S provided 24S) fingerprint is does not come in contact, sensor array (20) to be located beneath a sampling region number 8 to number 5 (25S provided 28S) fingerprint only contact substrate. The, number the circuit (40) includes a sampling region number 8 to number 5 (25S provided 28S) also only 10 as shown in the reference distribution corresponding to sensing data distribution can be obtain.

In the embodiment of in also 11b, sensor array (20) situated on a left side of number 1, number 2, number 5, sampling region number 6 (21S, 22S, 25S, 26S) fingerprint is does not come in contact, sensor array (20) situated on a right side of number 3, number 4, number 7, sampling region number 8 (23S, 24S, 27S, 28S) fingerprint only contact substrate. Thus, in the embodiment shown in the case of also 11b, number the circuit (40) includes a number 3, number 4, number 7, sampling region number 8 (23S, 24S, 27S, 28S) corresponding to data sensed by a distribution only reference distribution can be obtain.

Also in the embodiment shown in 11a and 11b also when such as, fingerprint sensing device (10) is sufficient to activate the fingerprint data cell line not be a fingerprint area contact. The, number the circuit (40) is also shown in the 11b are symmetrically 11a when, i.e., corresponding to the reference distribution acquired the distribution data sensed by a sampling region (21S provided 28S) 4 when the number of personal, fingerprint sensing device (10) is not cause [e[e] it will do number be fingerprint sensing operation.

Also 11c are symmetrically 11d is, fingerprint sensor array (20) indicating when sufficient contact area are disclosed. I.e., when and if a fingerprint contact as shown in also are symmetrically 11c 11d, number the circuit (40) includes a fingerprint sensing device (10) is operable to perform number for authenticating the user by the fingerprint sensing is accomplishing.

11c also sensor array (20) on the front side of a transparent contact numbers other. In the embodiment shown in in also 11c, all sampling region (21S provided 28S) corresponding to data sensed by a distribution reference distribution can be detected. The, number the circuit (40) includes a fingerprint sensing device (10) is operable to perform [e[e] it will do number be fingerprint sensing.

Also while in the embodiment shown in 11d, sampling region number 1 and number 5 (21S, 25S) number all external grudge a sampling region (22S provided 24S, 26S provided 28S) corresponding to data sensed by a distribution reference distribution can be detected. I.e., the entire 8 sampling region (21S provided 28S) 6 among sampling region (22S provided 24S, 26S provided 28S) corresponding to data sensed by a distribution reference distribution can be detected. The circuit number (40) corresponding to a reference distribution acquired the distribution data sensed by a sampling region (22S provided 24S, 26S provided 28S), i.e. the number of effective contact area determines to be greater than the threshold number, fingerprint sensing device (10) is operable to perform [e[e] it will do number be fingerprint sensing.

Also 11e and 11f is then also the foreign-sensor array (20) indicating when contact also are disclosed. 11e also reference the water sensor array (20) when from falling into, the circuit number (40) corresponding to data sensed by a distribution reference distribution cannot obtain disclosed. As described with reference to 8 also, water sensor array (20) when dropped, sensing data nodes can be shown only on the minimum and maximum. The, also shown in the 11e when, number the circuit (40) includes a fingerprint sensing device (10) is not cause [e[e] it will do number be fingerprint sensing operation.

Also 11f is other than of a foreign matter into an sensor array (20) indicating when contact are disclosed. As described with reference to also 7, conductive foreign substance other than water sensor array (20) when contacting the, number the circuit (40) has a plane orientation sensing distributions can be obtained disapproval. The circuit number (40) obtains the sensing data distribution case reference distribution, number the circuit (40) is compared with a reference distribution distributions the characteristic which it counts fingerprint sensing device (10) is not cause [e[e] it will do number be fingerprint sensing operation. However, according to the type of impurities, the circuit number (40) each video channel (21S provided 28S) corresponding reference distribution may be obtained from a sensing data distribution, in this case fingerprint sensing device (10) is the input fingerprint reference fingerprint sensing device (10) number of door can only power consumption is increased.

In of the present invention in the embodiment, in order to solve such a door number, number the circuit (40) and a second contact for determining process can remove contaminants further execution. The reference also 10, number the circuit (40) is further effective in Epon operation section can be set. Operation period is, effective section and contained in a series of, an optically sensing a maximum number based on the number of node set can be a series of data values.

10 also reference surface, an optically sensing data value is a maximum number number of node 112 can be defined by a range of at least 120 hereinafter. The number the circuit (40) is 112 or more data value can be set based on the operation section controls a flow rate of 120 hereinafter. In the embodiment shown in fig. 10 in, number the circuit (40) includes a range of 96 or more computing section 136 hereinafter set but, operation period is set so as to be narrower or wider disapproval.

The circuit number (40) subtracts the number of nodes is operation, effective subtracts between a number of nodes can be computing a ratio of. On the other hand, number the circuit (40) and a second contact is alien substances from said ratio for determining a predetermined threshold ratio can be set. Said threshold ratio fingerprint sensing device (10) according to a control can be properly. The circuit number (40) includes operation subtracts data sensed by a value with the number of nodes, nodes of said effective subtracts data sensed by a ratio between a number of if the former is smaller than the threshold value, sensor array (20) determines that contact the fingerprint can be.

For example, the number of entire node among 144, subtracts the number of nodes among 128 and effective sensing data value, operation subtracts the number of nodes when sensing data value personal 80, said 80/128 ratio, i.e., 62. 5% can be calculated. Fingerprint sensing device (10) a gradient of the 75% threshold ratio if said object, said condition number such as the circuit (40) of the sensor element array (20) contact the fingerprint can be determined. While, if the number of nodes 100 operation subtracts two sensing data value, the circuit number (40) of the sensor element array (20) can be determines that it contacts the housing.

Foreign contact number when the circuit (40) obtains a sensing data distribution agent of 8, fingerprint contact number when the circuit (40) also obtains data representing a distribution agent of 4 to 6 as compared with an optically sensing, distribution of data sensed by the subject in which is smaller in Figure 8 appears to be disclosed. I.e., if not fingerprint contact of a foreign matter, a value of the data sensed by a plurality of nodes detected in the narrow section can be more tangential.

As a result, the contact of a foreign matter, subtracts the number of nodes operation, effective ratio between a number of node subtracts, fingerprint contact appears to be relatively greater than can be. The, number the circuit (40) includes operation subtracts data sensed by a value with the number of nodes, the ratio between effective subtracts the number of nodes is reduced threshold than sensing data value, sensor array (20) contact the fingerprint can be Walsh.

Figure 13 shows a fingerprint sensing device of the present invention 12 and also one in the embodiment according to operation of the account for which ball number flow also are disclosed.

The reference also 12, fingerprint sensing device according to an embodiment of the present invention (10) such that operation of the, sensor array (20) which is defined a plurality of sampling region (21S provided 28S) starts by generating at each sensing data distribution can be (S101). Sensing circuit (30) comprises a plurality of sampling region (21S provided 28S) included in each of the plurality of node from detecting a variation of the capacitance can be obtain sensing data. The circuit number (40) includes a sensing circuit (30) obtains the sensing data value according to the number of each node to, sensing data distribution can be generate. , the circuit number (40) generating any cycle can be repeatedly sensing data distribution, a plurality of sampling region (21S provided 28S) in the embodiment of fig. 3b (SN1 provided SN8) is defined a plurality of sampling node not even of Figure 12 in the embodiment according to method can be applied as it negative disclosed.

Sensing data distribution once created, number the circuit (40) is generating current period compared with previous period was data sensed by a sensing data distribution (S102) distribution can be produced. Comparison result, data sensed by a judge if the distribution does not change, the circuit number (40) which receives an Image sensing data acquired distribution sampling region (21S provided 28S) is not valid data present in the contact can be judged (S104).

While, data sensed by a judge if the variations distribution, number the circuit (40) is judged that a sensing data distribution changes valid data present in the section can be calculated (S103). The circuit number (40) is, as described with reference to 10 also, according to the distribution of the histogram distribution node in sensing data value, high and low 5% number 1 and number 2 noise interval is considered valid section number setting section can be a stand-alone.

Effective interval is set, the circuit number (40) in distribution corresponding to predetermined reference distribution is effective section judges whether or not the substrate (S105). Said reference distribution, various conditions and environment sensor array (20) when contacting the fingerprint sensing can be exhibited in a distributions may be, for example also be a 4 to 6 as also shown in the inclination. S105 step judgment result, in distribution not corresponding to the reference distribution is repeated when the effective section, the circuit number (40) which receives an Image sensing data acquired distribution sampling region (21S provided 28S) is not valid data present in the contact can be determines (S104).

While, the result of the judgement step S105, in distribution corresponds to the reference distribution is repeated when the effective section, the circuit number (40) which receives video channel (21S provided 28S) and define the effective contact area, the number of effective contact area be (S106) nucleotides. The, step S102 S105 and/or undesirable condition is satisfied sampling region (21S provided 28S) counting the number times in step S106 are disclosed. The circuit number (40) and S105 step S102 is satisfied condition sampling region (21S provided 28S) can be compared to the number of counting of predetermined threshold number (S107). S107 steps that are applied at said threshold number, sampling region (21S provided 28S) may have a value of a total number of 60%. For example, sampling region such as also 3a (21S provided 28S) when the total number of is personal 8, Wednesday 5 be said threshold number.

S107 step judgment result, S105 and step S102 is satisfied conditions sampling region (21S provided 28S) determined to be greater than the number of said threshold number, number the circuit (40) is sufficient to produce a fingerprint information area of the sensor array (20) fingerprint decides to contact, can be fingerprint information (S108). To generate fingerprint information, driver (31) of the sensor element array (20) for driving and capable of applying a drive signal to the electrodes, integration circuit (32) driving a drive signal is applied to the panel and to detect changes in capacitance sensing from can be. ADC (33) is integration circuit for determining whether or not the freezer compartment can be sensing data to variations in capacitance. The circuit number (40) is ADC (33) produced by the fingerprint information is generated based on the sensing data, compared with the same pre-stored user authentication information for authenticating the user can.

On the other hand, the result of the judgement step S107, S105 and step S102 is satisfied conditions sampling region (21S provided 28S) back said number of threshold number hereinafter, the circuit number (40) any reference time (S109) condition, fingerprint sensing device (10) can be admitted to the waiting mode (S110). S109 steps that are applied at the reference time, sensor array (20) last to each time point can be computed from the fingerprint. Said reference time before sensor array (20) back to the contact occurs, the circuit number (40) can be fingerprint reference step S101 is go back again.

The reference gel layer 13, fingerprint sensing device according to an embodiment of the present invention (10) such that operation of the, sensor array (20) which is defined a plurality of sampling region (21S provided 28S) starts by generating at each sensing data distribution can be (S201). Sensing circuit (30) comprises a plurality of sampling region (21S provided 28S) included in each of the plurality of node from detecting a variation of the capacitance can be obtain sensing data. Or, as also shown in the 3b (SN1 provided SN8) detecting a variation of the capacitance in each sampling node to acquire data sensed by a disapproval. The circuit number (40) includes a sensing circuit (30) obtains the sensing data value according to the number of each node to, can be in the form of histogram generating sensing data distribution. , the circuit number (40) repeatedly sensing data distribution can be generating any cycle-by-cycle.

Sensing data distribution once created, number the circuit (40) is generating current period compared with previous period was data sensed by a sensing data distribution (S202) distribution can be produced. Comparison result, data sensed by a judge if the distribution does not change, the circuit number (40) which receives an Image sensing data acquired distribution sampling region (21S provided 28S) a, is not effective for automatically determining a non-contact can be (S204).

S202 step judgment result, variations distribution data sensed by a judge if the, number the circuit (40) which receives an Image sensing data distribution can be calculated valid data present in the section (S203). The circuit number (40) includes, S103 described prior and similarly, histogram generated in a form sensing data distribution in high and low 5% by number calculated effective section sets each noise interval can be a stand-alone.

The calculated effective interval, number the circuit (40) is effective in Epon judges whether or not the substrate (S205) corresponding distribution data sensed by a predetermined reference distribution. S205 step judgment result, in distribution not corresponding to the reference distribution is repeated when the effective section, the circuit number (40) which receives an Image sensing data acquired distribution sampling region (21S provided 28S) determines that contact is placed can be (S209).

While, the result of the judgement step S205, effective in Epon data sensed by a distribution corresponds to the reference distribution is repeated when the, number the circuit (40) is effective in Epon operation section can be set (S206). Operation section includes, an optically sensing a maximum number number of node reference value can be a series of data values. Operation interval is set, the circuit number (40) subtracts the number of nodes is operation, effective subtracts between a number of nodes can be computing a ratio of (S207).

S207 percentage calculated, each video channel (21S provided 28S) contact the thread number fingerprint to determine, determine whether contact sealing material can be used. The circuit number (40) is S207 calculated ratio, can be compared to a predetermined threshold ratio (S208). S208 step comparison result, S207 if it is less than the calculated said percentage threshold, the circuit number (40) which receives video channel (21S provided 28S) to contact the thread number fingerprint can be determined. While, the calculated threshold greater than said percentage S207, the circuit number (40) which receives video channel (21S provided 28S) judges that the fingerprint to a foreign matter (S209) can not contact.

Number after the circuit (40) includes, contact occurred in the determined sampling region (21S provided 28S) be the number of nucleotides (S210). S210 in, contact occurred in the determined sampling region (21S provided 28S) is, step S202, S205 and S208 requirements can be satisfied and area.

S210 count in sampling region (21S provided 28S) number of, i.e. S202, S205 and step S208 is satisfied requirements sampling region (21S provided 28S) number of greater than a predetermined threshold number, the circuit number (40) of the sensor element array (20) can be fingerprint information from (S211 - S212). While, the result of the judgement step S211, S202, S205 and step S208 is satisfied requirements sampling region (21S provided 28S) back said number of threshold number hereinafter, the circuit number (40) to a pre-determined reference time (S213) judges whether or not the fingerprint sensing device (10) can be admitted to the waiting mode (S214).

Also as described with reference to 12 and 13 also, fingerprint sensing device according to an embodiment of the present invention (10) is, a plurality of sampling region (21S provided 28S) during a predetermined number than the area of the fingerprint sensing device judges whether or not fingerprint effectively contact (10) determines whether from fingerprint information. The, contacts or foreign materials to generate fingerprint information sufficiently even when the fingerprint sensing device does not contact the fingerprint a jacket (10) at the other side can be prevent, fingerprint sensing device (10) of can restore.

In the embodiment according to Figure 14 shows a fingerprint sensing device of the present invention also may be applied to electronic sensors mounted thereon one indicating device are disclosed.

The reference also 14, according to an embodiment of the present invention electronic device (100) is, housing (110), display (120), key input section (130), a speech output section (140) and fingerprint sensing device (150) can be like. According to an embodiment of the present invention electronic device (100) is shown in Figure 14 smart phone but, alternatively tablet PC, as well as other mobile device such as a laptop, desktop computer, television, refrigerator, washing machine, such as thawing and also includes a resonance device can be.

In the embodiment shown in in 14 also, electronic device (100) including the fingerprint sensing device (150) is also 1 to 13 in the embodiment described with reference to implementation being device also have been applied. I.e., fingerprint sensing device (150) under public affairs number input area for receiving user fingerprint sensor array, the sensor array is connected to the fingerprint information is generated, can be a controller IC for authenticating the user. Said controller IC is, separate memory or electronic device (100) for managing interworking with a user authentication information can be included in memory, electronic device (100) of an application processor (AP) separated from each other by said application processor or integrated circuit chip number ball wetted by a disapproval.

Said controller IC is, requested from said input contact region, said region detected in the sensing data from a plurality of sampling which is defined input area obtaining distribution data sensed by a same reference distribution can be compared. Comparison result, reference distribution corresponding to said sampling region is greater than a predetermined number of acquired the distribution data sensed by a threshold number, said number water input contact region judging that the valid fingerprint can be a fingerprint information.

The present invention above specifically defined and distinct components are obviated in the embodiment described by the specific such as drawing and machining, this presents a number to aid understanding of the present invention overall than a scrap, is limited to the present invention are said in the embodiment has the, is provided to the present invention having various modifications and modified the conventional knowledge NaOCl such from the substrate to be heated disclosed.

Thus, in the embodiment of the present invention does not require any limited and not in said idea is described, as well as claim claim carry evenly on all of the present invention belonging to that category of event that is genetically modified or on an equivalent will.