TWI845303B - Touch device - Google Patents

Abstract

A touch device is provided. The touch device includes a substrate, a plurality of fingerprint sensor circuits, a plurality of zone switch circuits, a plurality of readout circuits, and a plurality of readout switch circuits. The fingerprint sensor circuits are disposed on the substrate and arranged in an array, wherein the fingerprint sensor circuits are activated in response to at least one touch position. The zone switch circuit is disposed on the substrate, and is respectively coupled to a row of fingerprint sensor circuits in the fingerprint sensor circuits. The readout switch circuits are respectively coupled between the zone switch circuits and a corresponding one of the readout circuits.

Description

Touch device

The present invention relates to a touch device, and in particular to a touch device with fingerprint sensing capability.

At present, the fingerprint recognition device under the panel of large-size touch display panels can not only perform single-click unlocking at any position, but also multi-click unlocking to enhance security. Among them, the sensor panel for fingerprint recognition is divided into zones, and the corresponding multiplexer assists in the output of fingerprint images. However, when multiple zones are pressed, multiple fingerprint images cannot be output to the control circuit at the same time due to the shared readout wiring, that is, they must be output in batches, and if the control circuit does not have a temporary storage function, multiple fingerprints need to be exposed and recognized multiple times, but this will increase the unlocking time and affect the user experience.

The present invention provides a touch device that can reduce the transmission time of multiple fingerprint images.

The touch device of the present invention includes a substrate, a plurality of fingerprint sensor circuits, a plurality of partition switch circuits, a plurality of readout circuits, and a plurality of readout switch circuits. The fingerprint sensor circuits are disposed on the substrate and arranged in an array, wherein the fingerprint sensor circuits are activated in response to at least one touch position. The partition switch circuits are disposed on the substrate and are individually coupled to a row of fingerprint sensor circuits in the fingerprint sensor circuits. The readout switch circuits are individually coupled between the partition switch circuits and a corresponding one of the readout circuits.

Based on the above, the touch device of the embodiment of the present invention transmits the images of different fingerprints to different readout circuits via the partition switch circuit and the readout switch circuit. Thus, fingerprints of different rows can be exposed and written at the same time, and fingerprints of the same row can be exposed and written in succession at the same time, so as to reduce the time of sensing fingerprint images.

In order to make the above features and advantages of the present invention more clearly understood, the following is a detailed description of the embodiments with the accompanying drawings.

100: Touch device

110: Touch sensor panel

111: Touch panel

112: Substrate

120: Control circuit

C: Capacitor

CPS: Fingerprint sensor circuit

CR1~CR8: Reset drive circuit

CRD1~CRD2: readout circuit

CRT1~CRT2, CRT1a~CRT2a: Read out the switch circuit

CW1~CW8: Write drive circuit

CZ1~CZ5: Zone switch circuit

DFP1, DFP2: fingerprint data

Exposure: Exposure period

FP1, FP2, FP3: Fingerprints

LPin1~LPin2m: Pin wiring

LR0: Read line

P: Node

PD: Photodiode

Pin1~Pin2m: Pins

PXE: Pixel Sensing

Reset: Reset period

Sout: read out signal

SPT: Touch position

SR_R1~SR_RN: reset timing signal

SR_W1~SR_WN: writing timing signal

STR1~STR8: Reset signal

STW1~STW8: write signal

TR: Reset switch

TW: Write switch

TZ1, TZ2, TZ3, TZ4, TZ5, TR11, TR12, TR13, TR14, TR15, TR21, TR22, TR23, TR24, TR25, TR1, TR2: transistors

VDD: system high voltage

VSS: System low voltage

Write: During writing

ZSW1~ZSW5, PSW1~PSW3: switch signal

Figure 1 is a system schematic diagram of a touch control device according to an embodiment of the present invention.

Figure 2 is a schematic diagram of a partition switch circuit and a readout switch circuit according to an embodiment of the present invention.

Figure 3 is a timing diagram of multi-fingerprint sensing of a touch device according to an embodiment of the present invention.

FIG4 is a pulse timing diagram of a partitioned switch signal and a read switch signal according to an embodiment of the present invention.

Figure 5 is a schematic diagram of the position of multi-fingerprint sensing according to another embodiment of the present invention.

FIG6 is a timing diagram of multi-fingerprint sensing of a touch device according to another embodiment of the present invention.

Figure 7 is a schematic diagram of the position of multi-fingerprint sensing according to another embodiment of the present invention.

FIG8 is a timing diagram of multi-fingerprint sensing of a touch device according to another embodiment of the present invention.

FIG9 is a circuit diagram of a partition switch circuit and a readout switch circuit according to another embodiment of the present invention.

FIG10 is a circuit diagram of a fingerprint sensor circuit according to an embodiment of the present invention.

FIG11 is a timing diagram of fingerprint sensing of a fingerprint sensor circuit according to an embodiment of the present invention.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by ordinary technicians in the field to which the present invention belongs. It will be further understood that those terms as defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and the present invention, and will not be interpreted as an idealized or overly formal meaning unless expressly defined as such in this document.

It should be understood that although the terms "first", "second", "third", etc. may be used herein to describe various elements, components, regions, layers and/or parts, these elements, components, regions, and/or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, the "first element", "component", "region", "layer" or "part" discussed below can be referred to as a second element, component, region, layer or part without departing from the teachings of this article.

The terms used herein are for the purpose of describing specific embodiments only and are not limiting. As used herein, unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" are intended to include the plural forms, including "at least one". " or "means" and/or". As used herein, the term "and/or" includes any and all combinations of one or more of the relevant listed items. It should also be understood that when used in this specification, the term "includes" and/or "includes" specifies the presence of the features, regions, wholes, steps, operations, elements, and/or parts, but does not exclude the presence or addition of one or more other features, regions, wholes, steps, operations, elements, parts, and/or combinations thereof.

FIG. 1 is a system schematic diagram of a touch control device according to an embodiment of the present invention. Referring to FIG. 1 , in this embodiment, the touch device 100 includes a touch sensing panel 110 and a control circuit 120, wherein the touch sensing panel 110 includes a touch panel 111, a substrate 112, a plurality of fingerprint sensor circuits CPS, a plurality of reset drive circuits (e.g., reset drive circuits CR1 to CR8), a plurality of write drive circuits (e.g., write drive circuits CW1 to CW8), a plurality of partition switch circuits (e.g., partition switch circuits CZ1 to CZ5), and a plurality of read switch circuits (e.g., read switch circuits CRT1 to CRT2), and a plurality of read circuits (e.g., read circuits CRD1 to CRD2) are configured in the control circuit 120. The fingerprint sensor circuit CPS is taken as an example of a 5×8 array, and the number of reset drive circuits, write drive circuits, partition switch circuits, read switch circuits, and read circuits is used for illustration, but the embodiment of the present invention is not limited thereto. The fingerprint sensor circuit CPS is configured on the substrate 112 and arranged in an array, wherein these fingerprint sensor circuits CPS are activated in response to at least one touch position, that is, in response to the position where the finger is pressed (i.e., the fingerprints FP1 and FP2 are placed) to activate the pressed fingerprint sensor circuit CPS. The partition switch circuits CZ1~CZ5 are arranged on the substrate 113, and are coupled to a row of fingerprint sensor circuits CPS in these fingerprint sensor circuits CPS through the readout line LR0, wherein these partition switch circuits CZ1~CZ5 are turned on in response to the activation of the coupled fingerprint sensor circuits CPS.

The readout switch circuits CRT1~CRT2 are respectively coupled between the partition switch circuits CZ1~CZ5 and the corresponding one of the readout circuits CRD1~CRD2, for example, the readout switch circuit CRT1 is coupled to the readout circuit CRD1, and the readout switch circuit CRT2 is coupled to the readout circuit CRD2. In addition, the readout circuits CRD1 and CRD2 are used to provide fingerprint data DFP1 and DFP2.

According to the above, in terms of the positions of fingerprints FP1 and FP2, since fingerprints FP1 and FP2 are located in different rows, that is, corresponding to different partition switch circuits, the image of fingerprint FP1 can be transmitted to readout circuit CRD1 via partition switch circuit CZ2 and readout switch circuit CRT1, and the image of fingerprint FP2 can be transmitted to readout circuit CRD2 via partition switch circuit CZ4 and readout switch circuit CRT2. In this way, since fingerprints of different rows can be read and transmitted via different readout circuits, some fingerprints can be exposed at the same time to reduce the time of sensing fingerprint images.

In the embodiment of the present invention, the touch panel 111 is stacked with these fingerprint sensor circuits CPS, and senses the position of the finger pressing (i.e., displaying the fingerprint FP1 and/or FP2) to provide at least one touch position SPT to the control circuit 120. In addition, the partition switch circuits CZ1~CZ5 and the read switch circuits CRT1~CRT2 can be coupled to the control circuit 120 to be activated by the signal provided by the control circuit 120.

In the embodiment of the present invention, the number of readout circuits CRD1~CRD2 can be less than the number of these partition switch circuits CZ1~CZ5, but the embodiment of the present invention is not limited to this.

In the embodiment of the present invention, the reset drive circuits CR1~CR8 are arranged on the substrate 112, and coupled to the fingerprint sensor circuits CPS and the control circuit 120, so as to reset a row of fingerprint sensor circuits CPS respectively based on the reset signals STR1~STR8. The write drive circuits CW1~CW8 are arranged on the substrate 112, and coupled to the fingerprint sensor circuits CPS and the control circuit 120, so as to drive a row of fingerprint sensor circuits CPS respectively to write data based on the write signals STW1~STW8, so that the fingerprint sensor circuits CPS to be written generate multiple read signals.

In the embodiment of the present invention, taking the diagram of FIG. 1 as an example, these partition switch circuits CZ1~CZ5 are configured relative to the lower side (corresponding to the first side) of these fingerprint sensor circuits CPS, these reset drive circuits CR1~CR8 are configured relative to the left side (corresponding to the second side) of these fingerprint sensor circuits CPS which is different from the lower side, and these write drive circuits CW1~CW8 are configured relative to the right side (corresponding to the third side) of these fingerprint sensor circuits CPS which is different from the lower side and the left side. In other words, each of the partition switch circuits CZ1~CZ5 corresponds to (or is coupled to) a row of fingerprint sensor circuits CPS, each of the reset drive circuits CR1~CR8 corresponds to (or is coupled to) a column of fingerprint sensor circuits CPS, and each of the write drive circuits CW1~CW8 corresponds to (or is coupled to) a column of fingerprint sensor circuits CPS.

FIG2 is a circuit diagram of a partition switch circuit and a read switch circuit according to an embodiment of the present invention. Referring to FIG1 and FIG2, in this embodiment, the partition switch circuit CZ1 includes a plurality of transistors TZ1, wherein the first end of each transistor TZ1 is coupled to the read line LR0 of the fingerprint sensor circuit CPS, the control end of each transistor TZ1 receives a switch signal ZSW1 from the control circuit 120, and the second end of each transistor TZ1 is coupled to the read switch circuits CRT1 and CRT2.

The partition switch circuit CZ2 includes a plurality of transistors TZ2, wherein the first end of each transistor TZ2 is coupled to the readout line LR0 of the fingerprint sensor circuit CPS, the control end of each transistor TZ2 receives a switch signal ZSW2 from the control circuit 120, and the second end of each transistor TZ2 is coupled to the readout switch circuits CRT1 and CRT2.

The partition switch circuit CZ3 includes a plurality of transistors TZ3, wherein the first end of each transistor TZ3 is coupled to the readout line LR0 of the fingerprint sensor circuit CPS, the control end of each transistor TZ3 receives a switch signal ZSW3 from the control circuit 120, and the second end of each transistor TZ3 is coupled to the readout switch circuits CRT1 and CRT2.

The partition switch circuit CZ4 includes a plurality of transistors TZ4, wherein the first end of each transistor TZ4 is coupled to the readout line LR0 of the fingerprint sensor circuit CPS, the control end of each transistor TZ4 receives a switch signal ZSW4 from the control circuit 120, for example, and the second end of each transistor TZ4 is coupled to the readout switch circuits CRT1 and CRT2.

The read switch circuit CRT1 includes multiple transistors TR11, multiple transistors TR12, multiple transistors TR13, multiple transistors TR14, and multiple transistors TR15, wherein the control ends of these transistors TR11, these transistors TR12, these transistors TR13, these transistors TR14, and these transistors TR15 receive the switching signal PSW1 from the control circuit 120, and the second ends of these transistors TR11, these transistors TR12, these transistors TR13, these transistors TR14, and these transistors TR15 are respectively coupled to the pin wirings LPiin1~LPinm, where m is a positive integer greater than 1. Furthermore, the first ends of the transistors TR11 are coupled to the partition switch circuit CZ1, the first ends of the transistors TR12 are coupled to the partition switch circuit CZ2, the first ends of the transistors TR13 are coupled to the partition switch circuit CZ3, the first ends of the transistors TR14 are coupled to the partition switch circuit CZ4, and the first ends of the transistors TR15 are coupled to the partition switch circuit CZ5.

The read switch circuit CRT2 includes a plurality of transistors TR21, a plurality of transistors TR22, a plurality of transistors TR23, a plurality of transistors TR24, and a plurality of transistors TR25, wherein the control ends of these transistors TR21, these transistors TR22, these transistors TR23, these transistors TR24, and these transistors TR25 receive the switch signal PSW2 from the control circuit 120, and the second ends of these transistors TR21, these transistors TR22, these transistors TR23, these transistors TR24, and these transistors TR25 are respectively coupled to the pin wirings LPinm+1~LPin2m. Furthermore, the first ends of the transistors TR21 are coupled to the partition switch circuit CZ1, the first ends of the transistors TR22 are coupled to the partition switch circuit CZ2, the first ends of the transistors TR23 are coupled to the partition switch circuit CZ3, the first ends of the transistors TR24 are coupled to the partition switch circuit CZ4, and the first ends of the transistors TR25 are coupled to the partition switch circuit CZ5.

The pin wirings LPinm1 to LPinm are respectively coupled to the pins Pin1 to Pinm of the control circuit 120, and the pins Pin1 to Pinm are coupled to the readout circuit CRD1. The pin wirings LPinm+1 to LPinm2 are respectively coupled to the pins Pinm+1 to Pin2m of the control circuit 120, and the pins Pinm+1 to Pin2m are coupled to the readout circuit CRD2.

According to the above, the pins of the control circuit 120 are divided into 2 groups, which are responsible for receiving fingerprint images of different partitions, and the readout switch circuits CRT1~CRT2 are set between the partition switch circuits CZ1~CZ5 and the readout circuits CRD1~CRD2, so that the readout lines LR0 of different rows are introduced into different groups of pins Pin1~Pinm or pins Pinm+1~Pin2m, and the transmission of multiple fingerprint images can be completed at the same time (depending on the grouping of the pins and the number of readout circuits), so as to reduce the number of identification times and reduce the unlocking time. In the embodiment of the present invention, the pins of the control circuit 120 can be divided into more than 2 groups, which depends on the chip that realizes the control circuit 120, and the embodiment of the present invention is not limited to this.

FIG3 is a timing diagram of multi-fingerprint sensing of a touch device according to an embodiment of the present invention. Referring to FIG1 to FIG3, in this embodiment, fingerprints FP1 and FP2 are located in different rows of fingerprint sensor circuits CPS, so the fingerprint sensor circuits CPS corresponding to fingerprints FP1 and FP2 can simultaneously turn on (or enable) reset signals STR3 and STR6 to reset the fingerprint sensor circuits CPS and then start exposure (as shown in the "exposure" time), and due to different transmission paths, the images of fingerprints FP1 and FP2 can be simultaneously At the same time, it is transmitted (or written) to the readout circuit CRD1~CRD2 (as shown in the "write" time), that is, the switch signals ZSW2 and PSW1 are turned on at the same time, and the relevant signals of the fingerprint FP1 image are directed to the first group of pins Pin1~Pinm, and at the same time, the switch signals ZSW4 and PSW2 are turned on at the same time, and the relevant signals of the fingerprint FP2 image are directed to the second group of pins Pinm+1~Pin2m.

Then, the relevant signals of the fingerprint FP1 and FP2 images are transmitted to the processor (not shown) of the electronic device (not shown) (as shown in the "transmission" time), and finally the processor (not shown) executes the recognition-related instructions/software to perform fingerprint recognition and unlocking (as shown in the "recognition & unlocking" time).

FIG4 is a pulse timing diagram of a partition switch signal and a read switch signal according to an embodiment of the present invention. Referring to FIG1 to FIG4, in the embodiment of the present invention, the switch signals ZSW2, ZSW4, PSW1 and PSW2 are pulse-shaped during the "write" time. Among them, the switch signals ZSW2 and PSW1 can present exactly the same waveform, that is, the turn-on time of the read switch circuit CRT1 is synchronized with the turn-on time of the partition switch circuit CZ2 that is turned on. The switch signals ZSW4 and PSW2 present exactly the same waveform, that is, the turn-on time of the read switch circuit CRT2 is synchronized with the turn-on time of the partition switch circuit CZ4 that is turned on. That is, the read-out conduction time of one of the switch circuits CRT1 and CRT2 is synchronized with the conduction time of a conducting partition switch circuit (such as CZ1~CZ5).

Furthermore, the switch signals PSW1 (or ZSW2) and PSW2 (or ZSW4) are complementary, that is, the conduction time of the readout switch circuits CRT1 and CRT2 is mutually exclusive, so that the fingerprints FP1 and FP2 are transmitted to the readout circuits CRD1 and CRD2 separately (or in time-sharing).

FIG5 is a schematic diagram of the position of multi-fingerprint sensing according to another embodiment of the present invention. FIG6 is a timing diagram of multi-fingerprint sensing of a touch device according to another embodiment of the present invention. Please refer to FIG1, FIG3, FIG5 and FIG6. In this embodiment, fingerprints FP1 and FP3 are located in the same row (that is, corresponding to the same partition switch circuit CZ2). After the touch panel 111 detects the fingerprint sensor circuit CPS corresponding to the fingerprints FP1 and FP3, the reset signals STR6 and STR3 are turned on in sequence to reset the fingerprint sensor circuit CPS and then start exposure. First, the switch signals ZSW2 and PSW1 are turned on at the same time to guide the relevant signals of the image of the fingerprint FP1 to the first group of pins Pin1~Pinm. Then, after the fingerprint FP1 image is written, the switch signals ZSW2 and PSW2 are turned on at the same time to direct the relevant signals of the fingerprint FP3 image to the second group of pins Pinm+1~Pin2m.

Although, compared to Figure 3, there is an extra "write" time, the "identification & unlocking" time remains the same. Under the premise that the "identification & unlocking" time > "write" time, it still has the function of reducing the unlocking time.

FIG7 is a schematic diagram of the position of multi-fingerprint sensing according to another embodiment of the present invention. FIG8 is a timing diagram of multi-fingerprint sensing of a touch device according to another embodiment of the present invention. Please refer to FIG1, FIG3, FIG7 and FIG8. In this embodiment, fingerprints FP1 and FP2 are located in different rows of fingerprint sensor circuits CPS (i.e., corresponding to different partition switch circuits CZ2 and CZ4), and fingerprints FP1 and FP3 are located in the same row (i.e., corresponding to the same partition switch circuit CZ2). After the touch panel 111 detects the fingerprint sensor circuits CPS corresponding to fingerprints FP1, FP2 and FP3, reset signals STR6 and STR3 are turned on in sequence to reset the fingerprint sensor circuits CPS and then exposure begins. First, the switch signals ZSW2 and PSW1 are turned on at the same time, and the related signals of the fingerprint FP1 image are directed to the first group of pins Pin1~Pinm. Then, after the fingerprint FP1 image is written, the switch signals ZSW2 and PSW2 are turned on at the same time, and the related signals of the fingerprint FP3 image are directed to the second group of pins Pinm+1~Pin2m. At the same time, the switch signals ZSW4 and PSW3 are turned on at the same time, and the related signals of the fingerprint FP2 image are directed to the third group of pins of the control circuit 120 (not shown), that is, transmitted to another readout circuit (not shown).

FIG9 is a circuit diagram of a partition switch circuit and a read switch circuit according to another embodiment of the present invention. Please refer to FIG1, FIG2 and FIG9. In the embodiment of FIG2, the read switch circuits CRT1~CRT2 are located between the partition switch circuits CZ1~CZ5 and the pin wirings LPiin1~LPin2m, but in this embodiment, the read switch circuits CRT1a~CRT2a can be located between the pin wirings LPiin1~LPin2m and the pins Pin1~Pin2m.

In the embodiment of the present invention, the read switch circuit CRT1a includes a plurality of transistors TR1, the first ends of the transistors TR1 are respectively coupled to the pin wirings LPiin1~LPinm, the control ends of the transistors TR1 receive the switch signal PSW1 from the control circuit 120, and the second ends of the transistors TR1 are respectively coupled to the pins Pin1~Pinm.

In the embodiment of the present invention, the read switch circuit CRT2a includes a plurality of transistors TR2, the first ends of the transistors TR2 are respectively coupled to the pin wirings LPinm+1~LPin2m, the control end of the transistor TR1 receives the switch signal PSW2 from the control circuit 120, and the second ends of the transistors TR2 are respectively coupled to the pins Pinm+1~Pin2m.

In the embodiment of the present invention, the readout switch circuits CRT1a~CRT2a can be located between the pin wirings LPin1~LPin2m and the pins Pin1~Pin2m, so the readout switch circuits CRT1a~CRT2a can be configured on the substrate 112, or on the flexible printed circuit board configured with the control circuit 120, that is, the readout switch circuits CRT1~CRT2 can be configured outside the substrate 112.

FIG10 is a circuit diagram of a fingerprint sensor circuit according to an embodiment of the present invention. Referring to FIG1 and FIG10, in this embodiment, each fingerprint sensor circuit CPS includes a plurality of sensing pixels PXE, wherein each sensing pixel PXE is arranged in an array and includes a reset switch TR, a photodiode PD, a capacitor C, and a write switch TW. The first end of the reset switch TR receives the system low voltage VSS through a wiring, the control end of the reset switch TR receives a reset timing signal (such as SR_R1~SR_RN) from a reset drive circuit (such as CR1~CR8) through a wiring, and the second end of the reset switch TR is coupled to a node P. Wherein, N is a positive integer greater than 1.

The photodiode PD is coupled between the node P and the write timing signal (such as SR_W1~SR_WN) from the write driver circuit (such as CW1~CW8). The capacitor C is coupled between the node P and the write timing signal (such as SR_W1~SR_WN). The first end of the write switch TW receives the system high voltage VDD, the control end of the write switch TW is coupled to the node P, and the second end of the write switch TW provides the read signal Sout to the partition switch circuit CZ1~CZ5 via the read line LR0.

FIG11 is a timing diagram of fingerprint sensing of a fingerprint sensor circuit according to an embodiment of the present invention. Please refer to FIG1, FIG10 and FIG11. In this embodiment, during the reset period Reset, the reset timing signals such as SR_R1~SR_RN are turned on in sequence to turn on the reset switch TR, so that the node P is reset to the level of the system low voltage VSS. Then, during the exposure period Exposure, the reset timing signals such as SR_R1~SR_RN are turned off, and the voltage across the capacitor C is the low voltage level of the P point and the write timing signal SR_W (such as SR_W1~SR_WN). However, if the photodiode PD is illuminated, the photodiode PD will generate light leakage to make the level of the node P close to the low voltage level of SR_W.

During the write period Write, the write timing signal SR_W turns to a high voltage level, and the node P is also raised due to the coupling effect, so that the write switch TW is turned on, and the system high voltage VDD is output accordingly to provide the read signal Sout, where the voltage of the read signal Sout depends on the degree to which the node P is raised. Then, the voltage of the read signal Sout is the basis for the strength of the signal output, and the read circuit CRD1~CRD2 will determine the corresponding gray level according to the voltage read.

In summary, the touch device of the embodiment of the present invention transmits the images of different fingerprints to different readout circuits via the partition switch circuit and the readout switch circuit. Thus, fingerprints of different rows can be exposed and written at the same time, and fingerprints of the same row can be exposed and written in succession at the same time, so as to reduce the time of sensing fingerprint images.

Although the present invention has been disclosed as above by the embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the relevant technical field can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of the attached patent application.

100: Touch device

110: Touch sensor panel

111: Touch panel

112: Substrate

120: Control circuit

CPS: Fingerprint sensor circuit

CR1~CR8: Reset drive circuit

CRD1~CRD2: readout circuit

CRT1~CRT2: Read out the switch circuit

CW1~CW8: Write drive circuit

CZ1~CZ5: Zone switch circuit

DFP1, DFP2: fingerprint data

FP1, FP2: Fingerprints

LR0: Read line

SPT: Touch position

STR1~STR8: Reset signal

STW1~STW8: write signal

Claims (10)

A touch device includes: a substrate; a plurality of fingerprint sensor circuits disposed on the substrate and arranged in an array, wherein the fingerprint sensor circuits are activated in response to at least one touch position; a plurality of partition switch circuits disposed on the substrate and individually coupled to a row of fingerprint sensor circuits among the fingerprint sensor circuits; a plurality of readout circuits; and a plurality of readout switch circuits, each of which is coupled between the partition switch circuits and a corresponding one of the readout circuits. A touch control device as described in claim 1, wherein the partition switch circuits are turned on in response to activation of the coupled fingerprint sensor circuit. A touch control device as described in claim 2, wherein the conduction time of one of the read-out switch circuits is synchronized with the conduction time of the turned-on partition switch circuit. A touch control device as described in claim 2, wherein the conduction times of the read-out switch circuits are mutually exclusive. A touch control device as described in claim 1, wherein the readout switch circuits are arranged on the substrate. A touch control device as described in claim 1, wherein the readout switch circuits are arranged outside the substrate. The touch device as described in claim 1 further includes a touch panel stacked with the fingerprint sensor circuits and sensing the at least one touch position. A touch control device as described in claim 1, wherein the number of the readout circuits is less than the number of the partition switch circuits. The touch device as described in claim 1 further includes: a plurality of reset drive circuits, arranged on the substrate and coupled to the fingerprint sensor circuits to reset the fingerprint sensor circuits; and a plurality of write drive circuits, arranged on the substrate and coupled to the fingerprint sensor circuits to drive the fingerprint sensor circuits to write data, so that the fingerprint sensor circuits generate a plurality of read signals. A touch control device as described in claim 9, wherein the partition switch circuits are configured relative to a first side of the fingerprint sensor circuits, the reset drive circuits are configured relative to a second side of the fingerprint sensor circuits, and the write drive circuits are configured relative to a third side of the fingerprint sensor circuits, wherein the first side, the second side and the third side are different from each other.

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