Fingerprint Identification Method Using an Electronic Device and the Electronic Device

Abstract

The present disclosure provides a fingerprint recognition method using an electronic device and an electronic device having a fingerprint recognition function. The fingerprint recognition method includes the following steps: dividing a plurality of readout lines of the electronic device into at least two groups; receiving a signal; determining a finger touch area according to the signal; and simultaneously activating partial readout lines of each of at least two groups within the finger touch area.

Description

Technical Field

[0001] The present disclosure relates to a fingerprint identification method using an electronic device and an electronic device with a fingerprint identification function, and particularly to a fingerprint identification method and an electronic device that can reduce the number of scans. Background Art

[0002] With the rapid development of technology, various touch panels, touch display panels, and touch screens are also widely used in daily life. Moreover, under the popularization of full-screen mobile phones, the maturity of artificial intelligence, and the high demand for the appearance of mobile phones, fingerprint unlocking on the screen has become a popular mobile phone unlocking method. Fast and accurate fingerprint identification or control positioning is the current goal of mobile phone design.

[0003] In the currently commonly used technology, fingerprint unlocking can only be used in a specific area of the mobile phone screen. The mobile phone must scan a specific touch area multiple times to collect fingerprint data for fingerprint identification. Therefore, this will result in a poor experience of high latency in the fingerprint unlocking process on the screen, and at the same time, it will consume a large amount of power, shortening the working time of the mobile phone. Summary of the Invention

[0004] The purpose of the present disclosure is to provide a fingerprint identification method using an electronic device and an electronic device with a fingerprint identification function. After the electronic device performs a low number of scans on a specific touch area, it can accurately identify fingerprints.

[0005] An embodiment of the present disclosure provides a fingerprint identification method using an electronic device. The fingerprint identification method includes dividing a plurality of readout lines of the electronic device into at least two groups, receiving a signal, determining a finger touch area based on the signal, and simultaneously activating a part of each group of readout lines within the corresponding finger touch area.

[0006] Another embodiment of the present disclosure provides an electronic device with a fingerprint identification function. The electronic device includes a touch panel, a plurality of scan lines, a plurality of readout lines, a plurality of readout line driving circuits, and a fingerprint identification readout circuit. The plurality of scan lines are coupled to the touch panel. The plurality of readout lines are coupled to the touch panel. The plurality of readout line driving circuits are coupled to the plurality of readout lines and selectively output fingerprint information. The fingerprint identification readout circuit is coupled to the plurality of readout line driving circuits to perform a fingerprint identification function. The plurality of readout lines are divided into at least two groups. After the fingerprint identification readout circuit receives a signal, the fingerprint identification readout circuit determines a finger touch area based on the signal and simultaneously activates a part of each group of readout lines within the corresponding finger touch area. Description of the Drawings

[0007] Figure 1The figure shows a block diagram of an electronic device with a fingerprint recognition function according to the present disclosure.

[0008] Figure 2 Shown is Figure 1 a schematic diagram of an electronic device with a fingerprint recognition function, in which readout lines are grouped using a first mode, and then fingerprint information is read out using a fingerprint recognition readout circuit.

[0009] Figure 3 Shown is Figure 1 a schematic diagram of an electronic device with a fingerprint recognition function, in which readout lines are grouped using a second mode, and then fingerprint information is read out using a fingerprint recognition readout circuit.

[0010] Figure 4 Shown is Figure 1 a schematic diagram of an electronic device with a fingerprint recognition function, in which a control signal is used to control readout line driving circuits corresponding to different regions in a touch panel.

[0011] Figure 5 Shown is Figure 1 a schematic diagram of a first waveform of a control signal and a signal of a scan line in an electronic device with a fingerprint recognition function.

[0012] Figure 6 Shown is Figure 1 a schematic diagram of a second waveform of a control signal and a signal of a scan line in an electronic device with a fingerprint recognition function.

[0013] Figure 7 Shown is Figure 1 a flowchart of a fingerprint recognition method executed in an electronic device with a fingerprint recognition function.

[0014] Explanation of reference numerals: 100 - electronic device; 10 - touch panel; 11 - scan line control circuit; 12 - display gate driving circuit; 13 - circuit group; SR1 to SR14 - scan line groups; FPR - finger touch area; A1 to A4 - areas; D1 to D6 - readout line groups; Z1 to Z6 - driving circuits; SC1, SC2 and SW - control signals; ROIC - fingerprint recognition readout circuit; Sync - synchronization signal; TDDI - touch panel driving circuit; SW1 to SW6 - control signals; T1 to T2N - transistors; R1 to R2N - readout lines; Row8-1_Gate to Row8-120_Gate - scan line signals; Row9-1_Gate to Row9-120_Gate - scan line signals; S701 to S704 - steps. Detailed implementation manners

[0015] The following describes the content of this disclosure in detail with reference to specific embodiments and drawings. For the content of this disclosure to be clearer and more understandable, the following drawings may be simplified schematic diagrams, and the elements therein may not be drawn to scale. Moreover, the number and size of each element in the drawings are only for illustration and are not intended to limit the scope of this disclosure.

[0016] Throughout this specification and the appended claims, certain terms will be used to refer to particular elements. Those skilled in the art should understand that electronic device manufacturers may refer to the same element by different names, and this document does not intend to distinguish elements that have the same function but different names. In the following specification and claims, terms such as "comprising" and "including" are open-ended terms and should therefore be construed as meaning "including but not limited to...".

[0017] The ordinal numbers used in the specification and claims, such as "first", "second", etc., are used to modify the elements of the claims. They do not inherently imply or represent that the claimed element has any previous ordinal number, nor do they represent the order of one claimed element and another claimed element, or the order in the manufacturing method. The use of these ordinal numbers is only to clearly distinguish one claimed element with a certain name from another claimed element with the same name.

[0018] It should be noted that the technical solutions provided in different embodiments below can be replaced, combined, or used in combination with each other to form another embodiment without violating the spirit of this disclosure.

[0019] Figure 1The following is a block diagram of an electronic device 100 with a fingerprint recognition function according to the present disclosure. The electronic device 100 includes a touch panel 10, a plurality of scan line groups SR1 to SR14, a plurality of readout line groups D1 to D6, a plurality of driving circuits Z1 to Z6 (which can be the operating circuits of a multiplexer), and a fingerprint recognition readout integrated circuit (ROIC). It should be understood that the touch panel 10 of the electronic device 100 can be a touchpad with only a touch function, such as a capacitive touchpad or a resistive touchpad. However, the touch panel 10 of the electronic device 100 can also be a panel with a display image or / and touch function. Any reasonable structure of the touch panel 10 falls within the scope of the present disclosure. Moreover, the electronic device 100 can be applied to a display device, an antenna device, a sensing device, or a splicing device, but is not limited thereto. The electronic device 100 can be a bendable or flexible electronic device. The electronic device 100 can, for example, include liquid crystal and light-emitting diodes. The light-emitting diodes (Light Emitting Diode, LED) can, for example, include organic light-emitting diodes (Organic Light Emitting Diode, OLED), mini light-emitting diodes (MiniLED), micro light-emitting diodes (Micro LED), or quantum dot light-emitting diodes (Quantum Dot, QD, which can be, for example, QLED, QDLED), fluorescence, phosphorescence, or other suitable materials, and can be arbitrarily arranged and combined, but are not limited thereto. The touch panel 10 can be divided into P×Q regions. P and Q are positive integers. In Figure 1 it, P = 14 (arranged along the Y-axis), and Q = 6 (arranged along the X-axis). The dimensions and shapes of the P×Q regions of the touch panel 10 are not limited. For example, in Figure 1In this case, each area of the touch panel 10 can correspond to 120 scan lines and 120 readout lines. In other words, the area in the upper left corner of the touch panel 10 corresponds to the scan line group SR1 and the readout line group D1. Here, the scan line group SR1 can include 120 scan lines, and the readout line group D1 can include 120 readout lines, and so on. However, in the electronic device 100, the number of scan lines and the number of readout lines corresponding to each area are not limited. That is, the number of scan lines of the scan line group SRp corresponding to the (p, q) area is not limited, and the number of readout lines of the corresponding readout line group Dq is not limited. The multiple scan lines and multiple readout lines of the touch panel 10 are coupled to the touch panel 10. The multiple driving circuits Z1 to Z6 are coupled to the multiple readout lines for selectively outputting fingerprint information. In other words, the multiple driving circuits Z1 to Z6 can be regarded as the input terminals of a multiplexer. The electronic device 100 can selectively output data corresponding to a specific area of the touch panel 10 to reduce the excessive number of scans of the touch panel 10, the details of which will be described later. The fingerprint identification readout circuit ROIC is coupled to the multiple driving circuits Z1 to Z6 for performing the fingerprint identification function. In the electronic device 100 having the fingerprint identification function, the multiple readout lines are divided into at least two groups. After the fingerprint identification readout circuit ROIC receives a signal, the fingerprint identification readout circuit ROIC can determine the finger touch area FPR according to the signal. Here, the signal received by the fingerprint identification readout circuit ROIC can be a touch signal, including the positioning information of the finger touching the touch panel 10. The finger touch area FPR can include multiple areas. For example, in Figure 1 this case, the finger touch area FPR can include area A1, area A2, area A3, and area A4. Therefore, in terms of the setting of one embodiment, a single scan line group includes 120 scan lines, and a single readout line group includes 120 readout lines. Therefore, when the finger touch area FPR includes area A1, area A2, area A3, and area A4, it corresponds to the scan line group SR8, the scan line group SR9, the readout line group D3, and the readout line group D4. In other words, Figure 1The finger touch region FPR corresponds to 240 scan lines and 240 readout lines. The fingerprint recognition readout circuit ROIC can simultaneously activate a part of the readout lines in at least two groups within the corresponding finger touch region FPR. For example, as mentioned above, the finger touch region FPR corresponds to the scan line group SR8, the scan line group SR9, the readout line group D3, and the readout line group D4. Since the fingerprint recognition readout circuit ROIC can simultaneously activate the readout line group D3 and the readout line group D4, it can receive the data of 240 readout lines at one time. The fingerprint recognition readout circuit ROIC can generate a control signal SW according to the finger touch region FPR to control the simultaneous activation of a part of the readout lines in each of at least two groups of readout lines (for example, the readout line groups D3 and D4, a total of 240 readout lines). The fingerprint recognition readout circuit ROIC can also generate a control signal SC1 to drive the scan line control circuit 11 to sequentially scan the finger touch region FPR, such as sequentially scanning with the 240 scan lines of the scan line group SR8 and the scan line group SR9. In other words, the fingerprint recognition readout circuit ROIC can activate multiple scan lines overlapping within the finger touch region FPR. After the readout lines corresponding to the finger touch region FPR are simultaneously activated and the scanning process is completed, the fingerprint recognition readout circuit ROIC can read the fingerprint information. It should be understood that the "readout lines" and "scan lines" described above are circuits used to drive the fingerprint recognition function. In other words, the "scan lines" are scan lines used to identify fingerprint features.

[0020] When the touch panel 10 of the electronic device 100 is a display touch panel with display image or / and touch function, the electronic device 100 may further include a touch panel driving circuit TDDI, a display gate driving circuit 12, and a circuit group 13. The circuit group 13 may include at least one multiplexer and at least one demultiplexer. Herein, the touch panel driving circuit TDDI can control the circuit group 13 to reduce the number requirement of multiple display scan lines for displaying images. The circuit group 13 may include at least one multiplexer and at least one demultiplexer. The circuit group 13 may be coupled to the touch panel driving circuit TDDI. For example, when displaying an image, 1080 columns of pixels need to be scanned, and the integrated circuit driving the scan lines needs to support 1080×3 scan lines. However, after introducing the circuit group 13, the 1080×3 scan lines can be partitioned (for example, divided into 6 zones). Therefore, only 540 scan lines need to be fanned out from the 1080×3 scan lines. The touch panel driving circuit TDDI can generate a synchronization signal Sync to the fingerprint identification readout integrated circuit ROIC. The operation steps of the electronic device 100 are as follows: After a finger touches the touch panel 10, the touch panel 10 can obtain the finger position and transmit a signal with the finger position (finger coordinate value) to the touch panel driving circuit TDDI. Then, the driving circuit TDDI can transfer the finger coordinate value to the fingerprint identification readout integrated circuit ROIC through the host. The fingerprint identification readout integrated circuit ROIC can use the control signal SW to select at least two driving circuits (such as driving circuit Z3 and driving circuit Z4) to activate some of the readout lines. The fingerprint identification readout integrated circuit ROIC can further use the control signal SC1 to control multiple scan line groups (such as scan line group SR8 and scan line group SR9, a total of 240 scan lines) to scan the finger touch area FPR. The touch panel driving circuit TDDI can generate a control signal SC2 to control the display gate driving circuit 12 to drive multiple display scan lines. It should be understood that the above-mentioned "display data lines" and "display scan lines" are circuits used to control the touch panel 10 to display different images. The mechanism of grouping multiple readout lines by the electronic device 100 and the mechanism of how to control the readout lines of multiple regions will be described in detail later.

[0021] Figure 1 And Figure 2Shown is a schematic diagram of an electronic device 100 with a fingerprint recognition function, where the readout lines are grouped in a first mode, and then the fingerprint information is read out by a fingerprint recognition readout circuit ROIC. Continuing with the settings of the above embodiments, each group of readout lines in readout line groups D1 to D6 includes 120 readout lines, but is not limited thereto. The finger touch area FPR may include 4 areas (area A1 to area A4). The fingerprint recognition readout circuit ROIC can collect 240 readout lines at a time, which is equivalent to collecting the readout line groups of 2 areas at a time. For example, area A1 and area A3 correspond to readout line group D3. Area A2 and area A4 correspond to readout line group D4. In Figure 2 , the readout line groups D1 to D6 can be divided into two groups. The first group includes readout line group D1, readout line group D3, and readout line group D5. The second group includes readout line group D2, readout line group D4, and readout line group D6. Since readout line group D1, readout line group D3, and readout line group D5 belong to the first group, readout line group D1, readout line group D3, and readout line group D5 can be coupled to each other. Similarly, since readout line group D2, readout line group D4, and readout line group D6 belong to the second group, readout line group D2, readout line group D4, and readout line group D6 can be coupled to each other. And, one readout line group can be selected from readout line group D1, readout line group D3, and readout line group D5 in the first group. Another readout line group can be selected from readout line group D2, readout line group D4, and readout line group D6 in the second group (such as Figure 2 ). And the component for selecting the readout line group can be a multiplexer for selection. In other words, the electronic device 100 can introduce a multiplexer, and the multiplexer can be used to select some of the readout lines from multiple readout lines divided into at least two groups. Therefore, only two of the original six readout line groups (D1 to D6) will be turned on simultaneously, and this disclosure is not limited thereto. For example, when the first group enables readout line group D1 and the second group enables readout line group D2, the touch panel 10 of the electronic device 100 can scan two areas at a time. When the first group enables readout line group D3 and the second group enables readout line group D4, the touch panel 10 of the electronic device 100 can scan two areas at a time. When the first group enables readout line group D5 and the second group enables readout line group D6, the touch panel 10 of the electronic device 100 can scan two areas at a time. In Figure 1For the embodiments, since the finger touch region FPR includes regions A1, A2, A3, and A4. Regions A1 and A2 are two regions in the middle of the touch panel 10, corresponding to the scan line group SR8 (120 scan lines). Regions A3 and A4 are two regions in the middle of the touch panel 10, corresponding to the scan line group SR9 (120 scan lines). Therefore, according to the position of the finger touch region FPR, the first group can enable the readout line group D3. The second group can enable the readout line group D4. Thus, for the finger touch region FPR including four regions (A1 to A4), the touch panel 10 can scan two regions simultaneously. In other words, as long as the touch panel 10 scans twice, the fingerprint identification readout circuit ROIC can obtain all the fingerprint information of the finger touch region FPR through the readout lines. More precisely, since the fingerprint identification readout circuit ROIC can select one of the three readout line groups in the first group. The fingerprint identification readout circuit ROIC can simultaneously select one of the three readout line groups in the second group. Therefore, for the first group and the second group, it is equivalent to that multiple readout lines can be coupled to at least one multiplexer, and at least one multiplexer is used to divide the multiple readout lines into at least two groups. And the dimension of the multiplexer is not limited. In other words, in other embodiments, the first group and the second group can be configured in other modes, details of which will be described later.

[0022] Figure 3 Shown is a schematic diagram of the readout lines being grouped in a second mode in the electronic device 100 with a fingerprint identification function, and then the fingerprint information is read out by the fingerprint identification readout circuit ROIC. The electronic device 100 can set the grouping mode, and is not limited to the above embodiments. In Figure 3 it, the readout line groups D1 to D6 can be divided into three groups. The first group includes the readout line group D1 and the readout line group D4. The second group includes the readout line group D2 and the readout line group D5. The third group includes the readout line group D3 and the readout line group D6. Since the readout line group D1 and the readout line group D4 belong to the first group, the readout line group D1 and the readout line group D4 can be coupled to each other. Similarly, since the readout line group D2 and the readout line group D5 belong to the second group, the readout line group D2 and the readout line group D5 can be coupled to each other. Similarly, since the readout line group D3 and the readout line group D6 belong to the third group, the readout line group D3 and the readout line group D6 can be coupled to each other. And, one readout line group can be selected from the readout line group D1 and the readout line group D4 in the first group. Another readout line group can be selected from the readout line group D2 and the readout line group D5 in the second group. Another readout line group can be selected from the readout line group D3 and the readout line group D6 in the third group (such as Figure 3) Similarly, the component for selecting the readout line group can be a multiplexer for selection. In other words, the electronic device 100 can introduce a multiplexer, and the multiplexer can be used to select some of the readout lines from the multiple readout lines of the above-mentioned group. Therefore, out of the original six readout line groups (D1 to D6), only three readout line groups will be turned on simultaneously, but the present disclosure is not limited to this. For example, when the first group enables the readout line group D1, the second group enables the readout line group D2, and the third group enables the readout line group D3, the touch panel 10 of the electronic device 100 can scan three areas at a time. When the first group enables the readout line group D4, the second group enables the readout line group D5, and the third group enables the readout line group D6, the touch panel 10 of the electronic device 100 can scan three areas at a time. If the finger touch area FPR spans the three areas corresponding to the readout line groups D2 to D4, the fingerprint identification readout circuit ROIC can simultaneously turn on the readout line group D2 in the second group, the readout line group D3 in the third group, and the readout line group D4 in the first group. In other words, the touch panel 10 can scan three areas simultaneously. Since the touch panel 10 can scan at least two areas simultaneously, the number of scans can be reduced.

[0023] As mentioned above, in Figure 2 and Figure 3 , the readout lines of at least two groups are staggered, and in at least two groups, the arrangement interval distance of the readout lines in each group is the same. For example, in Figure 2 , the readout lines of the first group and the second group are staggered (group sets {D1, D3, D5} and group sets {D2, D4, D6}). In Figure 3 , the readout lines of the first group, the second group, and the third group are staggered (group sets {D1, D4}, group sets {D2, D5}, group sets {D3, D6}). However, the present disclosure does not limit the grouping mode of the readout lines, and any reasonable technology belongs to the scope of the present disclosure. And after the finger touches the finger touch area FPR, the finger touch area FPR outputs fingerprint information to the fingerprint identification readout circuit ROIC through the readout lines of at least two groups. The fingerprint identification readout circuit ROIC performs fingerprint identification on the finger based on the fingerprint information. And since the electronic device 100 can scan more than two areas simultaneously, at least more than half of the number of scans in the traditional scanning mechanism can be reduced.

[0024] Figure 4Shown is a schematic diagram of controlling drive circuits Z1 to Z6 corresponding to different regions in touch panel 10 by control signals SW1 to SW6 in electronic device 100 with fingerprint recognition function. As mentioned above, readout line groups D1 to D6 can be divided into at least two groups. For example, readout line groups D1 to D6 can be divided into a first group {D1, D3, D5} and a second group {D2, D4, D6}. The fingerprint recognition readout integrated circuit (ROIC) generates control signals to control drive circuits Z1 to Z6 to turn on one of the readout line groups in the first group {D1, D3, D5} and at the same time turn on one of the readout line groups in the second group {D1, D3, D5}. In other words, drive circuits Z1 to Z6 can be regarded as switches when the multiplexer selects signals. Please also refer to Figure 3 and Figure 4 , drive circuit Z1 includes transistors T1 to TN( Figure 4)。The control signal SW1 can control transistors T1 to TN through the gate terminal. N can be 120, indicating that the readout lines R1 to RN of the readout line group D1 can be controlled by the control signal SW1. When the control signal SW1 is at a high potential, transistors T1 to TN are turned on, causing the fingerprint data carried by the readout lines R1 to RN of the readout line group D1 to be received by the fingerprint identification readout circuit ROIC. However, this disclosure is not limited thereto, and any waveform of the control signal used to control multiple readout lines of the readout line group D1 falls within the scope of this disclosure. Similarly, the drive circuit Z2 includes transistors TN+1 to T2N. The control signal SW2 can control transistors TN+1 to T2N through the gate terminal, which can be 120 (the indices of the transistors are T121 to T240), indicating that 120 readout lines RN+1 to R2N of the readout line group D2 can be controlled by the control signal SW1 (the indices of the readout lines are R121 to R240). When the control signal SW1 is at a high potential, transistors T1 to TN are in the on state, causing the fingerprint data carried by the 120 readout lines RN+1 to R2N of the readout line group D2 to be received by the fingerprint identification readout circuit ROIC, and so on. It should be understood that transistors T1 to TN or / and transistors TN+1 to T2N can be N-type metal-oxide-semiconductor field-effect transistors (N type Metal-Oxide-Semiconductor Field-Effect Transistor, NMOS), P-type metal-oxide-semiconductor field-effect transistors (P type Metal-Oxide-Semiconductor Field-Effect Transistor, PMOS), or complementary metal-oxide-semiconductor (Complementary Metal-Oxide-Semiconductor, CMOS), but not limited thereto. Therefore, the voltages of the control signals SW1 to SW6 can be adjusted according to the specifications of transistors T1 to TN and transistors TN+1 to T2N. Any reasonable change falls within the scope of this disclosure. The control signals SW1 to SW6 generated by the fingerprint identification readout circuit ROIC can control the readout lines to be enabled in the touch panel 10 through transistors. Therefore, in each scan, the fingerprint identification readout circuit ROIC can simultaneously obtain fingerprint data from more than two regions through the readout lines.

[0025] Figure 5 The figure shows a schematic diagram of the first waveform of the control signals SW1 to SW6, the scan line signals Row8-1_Gate to Row8-120_Gate, and the scan line signals Row9-1_Gate to the scan line signals Row9-120_Gate in the electronic device 100 with fingerprint identification function. Figure 6The following is a schematic diagram of the second waveform of control signals SW1 to SW6, scan line signals Row8-1_Gate to Row8-120_Gate, and scan line signals Row9-1_Gate to scan line signals Row9-120_Gate in the electronic device 100 with a fingerprint recognition function. As mentioned above ( Figure 1 ), the finger touch area FPR includes 4 areas (area A1 to area A4). The readout line groups corresponding to the finger touch area FPR are D3 and D4. Therefore, in Figure 5 , the fingerprint recognition readout circuit ROIC can generate control signals SW3 and SW4 that change from "low potential to high potential", open the multiplexer (open the transistors in Z3 and Z4), so that the readout line groups D3 and D4 are in an enabled state. The scan line signals Row8-1_Gate to Row8-120_Gate will then sequentially scan area A1 and area A2 simultaneously. Then, the scan line signals Row9-1_Gate to scan line signals Row9-120_Gate will sequentially scan area A3 and area A4 simultaneously. Therefore, for the finger touch area FPR, the electronic device 100 only needs two scans to complete the fingerprint data reading. Similarly, in Figure 6 , the fingerprint recognition readout circuit ROIC can generate control signals SW3 and SW4 of "high potential", open the multiplexer (open the transistors in Z3 and Z4), so that the readout line groups D3 and D4 are in an enabled state. The scan line signals Row8-1_Gate to Row8-120_Gate will then sequentially scan area A1 and area A2 simultaneously. Then, the scan line signals Row9-1_Gate to scan line signals Row9-120_Gate will sequentially scan area A3 and area A4 simultaneously. Therefore, for the finger touch area FPR, the electronic device 100 only needs two scans to complete the fingerprint data reading.

[0026] Figure 7 The following is a flowchart of performing a fingerprint recognition method in the electronic device 100 with a fingerprint recognition function. The process of the fingerprint recognition method includes steps S701 to step S704. Any reasonable step change belongs to the scope of this disclosure. Steps S701 to step S704 are described below:

[0027] Step S701: Divide multiple readout lines of the electronic device 100 into at least two groups;

[0028] Step S702: Receive a signal;

[0029] Step S703: Determine the finger touch area FPR based on the signal;

[0030] Step S704: Simultaneously activate a part of the readout lines of each of at least two groups within the corresponding finger touch region FPR.

[0031] Details of Steps S701 to S704 have been described in detail above, so they will not be repeated here. By dividing the multiple readout lines into at least two groups, the electronic device 100 can scan at least two regions of the touch panel 10 simultaneously. Therefore, in each scan, the fingerprint recognition readout circuit ROIC can obtain fingerprint data of more than two regions simultaneously through the readout lines, thereby reducing the number of scans and reducing the excessively long fingerprint recognition delay time.

[0032] In summary, the present disclosure describes a fingerprint recognition method using an electronic device and an electronic device with a fingerprint recognition function. The electronic device can be applied to a touchpad with only a touch function or a display touch panel with display and touch functions. The electronic device can group multiple readout lines in an interleaved manner and then activate a part of the readout lines within each group. Moreover, the number of groups of readout lines can be customized. When the multiple readout lines are divided into more than two groups, it means that the fingerprint recognition readout circuit can obtain fingerprint data of more than two regions simultaneously through the readout lines. In other words, since the electronic device can scan at least two regions simultaneously, the number of scans can be reduced. Also, because the electronic device can reduce the number of scans, the electronic device can reduce the excessively long fingerprint recognition delay time. And, the electronic device can also reduce the power consumption caused by too many scans.

[0033] The above are only examples of the present disclosure and are not used to limit the present disclosure. For those skilled in the art, various changes and modifications can be made to the present disclosure. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included within the protection scope of the present disclosure.

Claims

1. A fingerprint recognition method using an electronic device, characterized in that: The following steps are involved: Dividing a plurality of readout lines of the electronic device into at least two groups, wherein the at least two groups include a first group and a second group, the first group includes a first readout line group and a third readout line group, the second group includes a second readout line group and a fourth readout line group, the first readout line group, the second readout line group, the third readout line group, and the fourth readout line group respectively correspond to different areas on the electronic device; A fingerprint recognition readout circuit receives a signal; Determining a finger touch area according to the signal, wherein the first readout line group and the second readout line group correspond to the finger touch area; and The fingerprint recognition readout circuit generates a control signal to simultaneously activate the first readout line group in the first group and the second readout line group in the second group.

2. The method according to claim 1, wherein include: Activate multiple scan lines overlapping the finger touch area; The plurality of scanning lines are used to identify a fingerprint feature.

3. The method according to claim 1, wherein The plurality of readout lines are coupled to at least one multiplexer, and the at least one multiplexer is used to select a portion of the plurality of readout lines from the at least two groups.

4. The method according to claim 1, wherein The signal is a touch signal. The method of claim 1 , wherein the readout lines of the at least two groups are staggered.

6. The method according to claim 1, wherein include: After a finger touches the finger touch area, the finger touch area outputs fingerprint information to the fingerprint recognition readout circuit through a portion of the readout lines of each of the at least two groups; and The fingerprint recognition and reading circuit performs fingerprint recognition according to the fingerprint information.

7. The method according to claim 6, wherein include: A touch panel driving circuit generates a synchronization signal to the fingerprint recognition and reading circuit; and The touch panel driving circuit controls a display gate driving circuit to drive a plurality of display scanning lines.

8. The method according to claim 1, wherein include: Get the coordinate value of a finger; Transmitting the finger coordinate value to a touch panel driving circuit; and The touch panel driving circuit transfers the finger coordinate value to the fingerprint recognition reading circuit through a host.

9. An electronic device with a fingerprint recognition function, characterized in that: include: a touch panel; A plurality of scan lines coupled to the touch panel; a plurality of readout lines coupled to the touch panel; A plurality of driving circuits are coupled to the plurality of readout lines and selectively output fingerprint information; and a fingerprint recognition readout circuit coupled to the plurality of driving circuits for performing fingerprint recognition; The multiple readout lines are divided into at least two groups, and the at least two groups include a first group and a second group. The first group includes a first readout line group and a third readout line group, and the second group includes a second readout line group and a fourth readout line group. The first readout line group, the second readout line group, the third readout line group and the fourth readout line group respectively correspond to different areas on the electronic device. After the fingerprint recognition readout circuit receives a signal, the fingerprint recognition readout circuit determines a finger touch area based on the signal, and the finger touch area corresponds to the first readout line group and the second readout line group, and the fingerprint recognition readout circuit generates a control signal to simultaneously start the first readout line group in the first group and the second readout line group in the second group.

10. The electronic device according to claim 9, wherein: Also includes: A circuit group including at least one multiplexer and at least one demultiplexer; The circuit group is coupled to a touch panel driving circuit.

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