TW201804298A - Fingerprint touch apparatus and driving method thereof - Google Patents

Abstract

A fingerprint touch apparatus includes a scanning line, a readout line, a sensing unit, a scan driving circuit and a processing circuit. The sensing unit electrically coupled to the scanning line and the readout line. The scan driving circuit electrically coupled to the scanning line, and used for providing a scan pulse for the scanning line. The processing circuit electrically coupled to the readout line. The processing circuit used for providing at least one driving pulse for the readout line during the enable period of the scan pulse, wherein each one of the enable period of the driving pulse is smaller than each one of the enable period of the scan pulse. During the enable period of the scan pulse, the processing circuit reads a sensing data through the sensing unit after each one of the enable period of the driving pulse.

Description

Fingerprint touch device and driving method thereof

The invention relates to a driving technology of a panel, in particular to a fingerprint touch device and a driving method thereof.

The touch panel can be mainly divided into a resistive touch panel and a capacitive touch panel according to the physical principle of detecting the touch point. A resistive touch panel is lightly pressed with a finger or a stylus to generate a voltage; and a capacitive touch panel is operated by a finger touching the panel to draw a small current. Among them, capacitive touch panels are widely used at present.

Furthermore, the capacitive touch panel detects touch events in a self-inductive or mutual sense manner. The way of mutual inductance is to use a first electrode having a coordinate detecting the X direction and a second electrode for detecting a coordinate in the Y direction, and the first electrode and the second electrode are matched to complete the detection. The self-inductive method is to perform detection by voltage transmission and reception of each electrode itself. Since an electric field is formed on the electrode to which the voltage is applied, at this time, when a finger or the like is touched, the contact position is grounded via the electrostatic capacitance of the human body. As a result, a change in the capacitance value is generated between the terminal of the electrode and the contact position, thereby obtaining the coordinates of the touch position.

Different from the structure of the conventional touch panel, an object of the present invention is to provide a fingerprint touch device having both fingerprint recognition and touch sensing, including: a scan line, a data line, a sensing unit, a scan driving circuit, and processing. Circuit. The sensing unit is electrically coupled to the scan line and the data line. The scan driving circuit is electrically coupled to the scan line, and the scan drive circuit is configured to provide a scan line scan pulse. The processing circuit is electrically coupled to the data line for providing at least one driving pulse of the data line during the enabling period of the scanning pulse, the enabling period of each driving pulse is less than the enabling period of the scanning pulse, and the enabling of the scanning pulse After the end of the enable period of each drive pulse during the period, the processing circuit reads the sensing data of the sensing unit.

An embodiment of the present invention provides a fingerprint touch device, including: a plurality of scan lines, a plurality of data lines, a plurality of sensing units, a scan driving circuit, and a processing circuit. Each sensing unit is electrically coupled to one of the scan lines and one of the data lines. The scan driving circuit is electrically coupled to the scan line and configured to respectively provide a plurality of scan pulses to at least a portion of the scan lines. The processing circuit is electrically coupled to the data line for providing at least one driving pulse for each data line during the enabling period of each scanning pulse, and the enabling period of each driving pulse is less than the enabling period of each scanning pulse, and The processing circuit reads the sensing data of the sensing unit during the enable period of each scan pulse and after the end of the enable period of each drive pulse.

One object of the present invention is to provide a driving method of a fingerprint touch device. The fingerprint touch device has a sensing unit, a scan line and a data line, and the sensing unit is electrically coupled to the scan line and the data line. The driving method of the fingerprint touch device includes: providing a scan pulse to the scan line, and providing at least one drive pulse of the data line during the enable period of the scan pulse, and the enable period of each drive pulse is less than the enable period of the scan pulse, And sensing data of the sensing unit is read through the data line after the enable period of the scan pulse and the end of the enable period of each drive pulse.

Another embodiment of the present invention provides a driving method of a fingerprint touch device. The fingerprint touch device has a sensing unit, a scan line and a data line, and the sensing unit is electrically coupled to the scan line and the data line. The driving method of the fingerprint touch device includes: providing a scan pulse to the scan line, and providing at least one drive pulse of the data line during the enable period of the scan pulse, and the enable period of each drive pulse is less than the enable period of the scan pulse, And after the enabling period of the scan pulse and the end of the enable period of each drive pulse, the sensing data of the sensing unit is read through the read line, wherein the read line is electrically coupled to the sensing unit.

Another embodiment of the present invention provides a driving method of a fingerprint touch device. The fingerprint touch device has a plurality of scan lines, a plurality of data lines, and a plurality of sensing units, each of the sensing units being electrically coupled to one of the scan lines and one of the data lines. The driving method of the fingerprint touch device includes: respectively providing a plurality of scan pulses to at least a part of the scan lines of the scan lines, and providing at least one drive pulse for each data line during the enable period of each scan pulse, and each The sensing period of a driving pulse is less than the enabling period of each scanning pulse, and after the enabling period of each scanning pulse and the enabling period of each driving pulse ends, the sensing data of the sensing unit is read.

The fingerprint touch device of the present invention can determine the fingerprint contact event by reading the sensing data of each sensing unit through the arrangement of the scan line, the data line and the sensing unit, and is sufficient to construct the corresponding fingerprint according to the sensing data. The fingerprint pattern of the contact event. Moreover, the scan driving circuit can also provide a scan pulse to only a part of the scan lines to quickly determine whether a fingerprint contact event occurs.

FIG. 1 is a block diagram of a fingerprint touch device according to an embodiment of the present invention. In a first embodiment of the present invention, the fingerprint touch device 100 includes: scan lines G1 G Gm and data lines D1 〜 Dm, a common potential line Vcom, a scan driving circuit 10, a sensing unit 11, and a processing circuit 12. The sensing units 11 arranged in a matrix are electrically coupled to the scan lines G1 G Gm, the data lines D1 D Dm and the common potential line Vcom, respectively. The scan driving circuit 10 is electrically coupled to the scan lines G1 G Gm, and the scan driving circuit 10 is configured to provide scan lines G1 G Gm scan pulses. The processing circuit 12 is electrically coupled to the data lines D1 DDm and the common potential line Vcom.

FIG. 2 is a circuit diagram of the sensing unit 11 of the first embodiment. FIG. 3 is a timing diagram of signals of the sensing unit 11 of FIG. 2. Referring to FIG. 1 to FIG. 3, the sensing unit 11 includes a transistor T1 and a storage capacitor Cst. The transistor T1 has a first end, a second end, and a control end. The control end is electrically coupled to the scan line. One end is electrically coupled to the data line. One end of the storage capacitor Cst is electrically coupled to the second end, and the other end is electrically coupled to the common potential line Vcom.

It is particularly noted that the processing circuit 12 is configured to provide at least one drive pulse of the data line during the enable period of the scan pulse, and the enable period of each drive pulse is less than the enable period of the scan pulse. In addition, during the enable period of the scan pulse of the scan lines G1 G Gm, and after the enable period of each drive pulse ends, the processing circuit 12 reads the sensing data of the sensing unit 11, whereby the processing circuit 12 is based on The read sensing data detects whether the fingerprint touch device 100 has a fingerprint contact event, and obtains a fingerprint pattern according to the data frame constructed by the sensing data.

For example, as shown in FIG. 3A, the processing circuit 12 is configured to supply the data line Dm driving pulse P11 to charge the storage capacitor Cst during the enable period of the scan pulse P10 of the scan line Gm, and the data line Dm is at the driving pulse P11. After the end, it is low level, so the storage capacitor Cst will be discharged during the period t11, and then read by the data line Dm and then sent to the processing circuit 12, so the processing circuit 12 reads the sensing unit 11 and obtains the sensing data.

In some embodiments, the common potential line Vcom can be coupled to a zero potential or a ground potential. If the sensing unit 11 is not touched, the detected sensing data is discharged by the storage capacitor Cst during the period t11. Potential. On the other hand, if the sensing unit 11 is touched by the finger, the contact position responds to a sensing capacitance via the grounding of the human body, so that the sensing data read by the processing circuit 12 is greater than the provided driving pulse P11, and the fingerprint is determined to occur. Contact event.

In some embodiments, the common potential line Vcom can be coupled to a non-zero potential. Preferably, the common potential line Vcom and the corresponding data line can be provided with a driving pulse having the same enabling time and voltage magnitude. When the sensing unit 11 is not touched, in the period t11, the sensing data is detected when the two ends of the storage capacitor Cst are equipotential, wherein both ends of the storage capacitor Cst are nearly equal to zero current. On the other hand, if the sensing unit 11 is touched by the finger, the contact position responds to a sensing capacitance via the grounding of the human body, so that the sensing data of the detected sensing unit 11 will be a potential that is not significantly equal to zero, thereby determining that the fingerprint occurs. Contact event.

Furthermore, during the enable period of the scan pulses of the scan lines G1 G Gm, the processing circuit 12 can provide one or more drive pulses for the data lines D1 D Dm. As shown in FIG. 3B, in the enable period of the scan pulse P10 of the scan line Gm, after the drive pulse P12 is supplied to the data line Dm, the data line Dm reads the sensing data of the sensing unit 11 in the period t12, and The processing circuit 12 can also perform the detection again to provide the driving pulse P13 to the data line Dm, and the data line Dm reads the sensing data of the sensing unit 11 in the period t13. The processing circuit 12 can increase the accuracy by detecting the multiple times of the data line Dm during the enable period of the scan pulse of the scan line Gm, and has more abundant sensing data to construct a data picture to obtain a fingerprint pattern. However, the present invention is not limited thereto, and the number of times of detecting through the data line during the enable period of the scan pulse can be adjusted according to the actual implementation.

Further, FIG. 4 is a schematic diagram of a fingerprint contact event of the sensing unit 11 of the present invention. Referring to FIG. 1 and FIG. 4 , when the sensing unit 11 in the fingerprint touch device 100 is touched by a finger, the surface of the finger and the glass cover applied to the glass cover corresponding to the sensing unit 11 will be The sensing capacitor Cf is formed, and the corresponding sensing unit 11 responds to the sensing capacitor Cf, and one end of the sensing capacitor Cf is coupled to the second end of the sensing unit 11, and the other end is grounded. The finger-based fingerprint line has peaks and troughs, and the charge value charged by the peak-responsive sensing capacitance Cf of the fingerprint is greater than the charge value charged by the sensing capacitance Cf of the valley's valley response. Therefore, after the processing circuit 12 reads the sensing data of the sensing unit 11 of each corresponding fingerprint contact event, one or more fingerprint patterns can be constructed according to the different different charging values. In the embodiment of the present invention, since the fingerprint touch device 100 has a resolution of at least 200 dpi to 508 dpi, and preferably has a resolution of 508 dpi, there is sufficient sensing data to facilitate constructing a data screen.

In the foregoing first embodiment, after the data line supplies the driving pulse to each sensing unit, the sensing data of each sensing unit is read by the same data line and transmitted to the processing circuit. FIG. 5A is a structural diagram of a fingerprint touch device 200 according to a second embodiment of the present invention. FIG. 5B is a circuit diagram of the sensing unit 11a according to the second embodiment of the present invention. It is to be noted that the sensing unit 11a of the second embodiment is different from the sensing unit of the first embodiment in that the data line provides a driving pulse to each sensing unit 11a, and is read by the same sensing unit 11a. Lines are taken to read the sensing data of each sensing unit 11a and transmitted to the processing circuit.

As shown in FIG. 5A, the sensing units 11a arranged in a matrix are electrically coupled to the scan lines G1 G Gm, the data lines D1 D Dm, and the read lines R11 R Rmm, respectively. As shown in FIG. 5B, the sensing unit 11a includes a transistor T1, a transistor T2, and a storage capacitor Cst. The transistor T1 has a first end, a second end, and a first control end. The first control end is electrically coupled. The scan line Gm is connected, and the first end is electrically coupled to the data line Dm. One end of the storage capacitor Cst is electrically coupled to the second end. The transistor T2 has a third end, a fourth end, and a second control end. The second end is electrically coupled to the scan line Gm, and the third end is electrically coupled to the other end of the storage capacitor Cst. The fourth end is electrically coupled. The line Rmm is read, and the read line Rmm is electrically coupled to the processing circuit 12 to transmit the sensing data.

FIG. 5C is a signal timing diagram of the sensing unit 11a of FIG. 5B. Referring to FIG. 5A and FIG. 5C together, the processing circuit 12 is configured to supply the data line Dm driving pulse P14 to charge the storage capacitor Cst during the enable period of the scan pulse P10 of the scanning line Gm, and the data line Dm ends at the driving pulse P14. After that, the storage capacitor Cst is discharged and is transferred from the read line Rmm to the processing circuit 12 during the period t14, whereby the processing circuit 12 reads the sensing unit 11a to obtain the sensing data.

Fig. 6 is a circuit diagram of a sensing unit 11b according to a third embodiment of the present invention. The sensing unit 11b includes a transistor T1 and a metal piece 13. The sensing unit 11b is substantially the same as the driving and reading of the sensing data of the sensing unit of the first embodiment, except that the second end of the transistor T1 is electrically coupled to the metal piece 13. Specifically, referring to FIG. 6 and FIG. 3A, the processing circuit is configured to provide the data line Dm driving pulse P11 during the enabling period of the scanning pulse P10 of the scanning line Gm, if the fingerprint contact event has not occurred yet. There will be a sensing capacitor Cf, and the metal piece 13 is in a floating state, so the sensing data transmitted by the data line Dm to the processing circuit after reading may be some floating value. However, the charge value charged by the sensing capacitor Cf of the peak response of the fingerprint is significantly larger than the charge value of the sensing capacitor Cf of the valley response of the fingerprint, so that when a fingerprint contact event occurs, the corresponding fingerprint contact event is The change in the sensed data between adjacent sensing units will exhibit a significant difference. Therefore, after the processing circuit reads the sensing data of the sensing unit 11b, it is determined whether the change of the sensing data between the plurality of adjacent sensing units 11b is greater than a preset threshold, and if yes, the determination occurs. Fingerprint contact event. In this way, the portion of the sensing data between the plurality of adjacent sensing units 11b that is greater than the preset threshold value will constitute a pattern of the peak texture of the fingerprint.

In the first embodiment to the third embodiment, the manner in which the fingerprint touch device detects whether a fingerprint contact event occurs may be sequentially providing a plurality of scan pulses to each of the scan lines G1 G Gm, and each scan pulse During the enabling period, at least one driving pulse is provided for each data line D1~Dm, and the processing circuit 12 determines whether a fingerprint contact event occurs by using the sensed data of the read sensing unit. Alternatively, the scan lines G1 G Gm are divided into a plurality of groups by the scan driving circuit 10, and a plurality of scan pulses are respectively supplied to the group, that is, the scan driving circuit 10 can provide only a part of the scan lines. Scan the pulse and quickly determine if a fingerprint contact event has occurred. The manner of dividing the scan lines G1 G Gm into a plurality of groups may be adjusted according to actual implementation requirements. Moreover, after the fingerprint contact event is detected, the scan may be expanded according to the corresponding range, and the processing circuit 12 reads the sensing data of the sensing unit of each corresponding fingerprint contact event to construct a fingerprint pattern, for example, After detecting the fingerprint contact event, the corresponding scan line is scanned by a plurality of adjacent scan lines, so that the proximity sensing can be performed according to the sensing unit in which the fingerprint contact event occurs. Units to expand the range of sensory data.

FIG. 7 is a schematic diagram of a configuration of a switch unit of a fingerprint touch device according to an embodiment of the present invention. The fingerprint touch device 300 further includes a switch unit 21 or/and 22, which can be used by using the switch unit 21/22. The scan driving circuit is connected to a plurality of scanning lines, and the signal input lines connecting the circuit control chips to the plurality of data lines are reduced. The present embodiment is a fingerprint touch device 300 having the sensing unit of the first embodiment. However, the present invention is not limited thereto, and those skilled in the art should know the sensing unit architecture of the second embodiment. The switch unit can also be used in combination with a fingerprint touch device having the sensing unit of the second embodiment or the third embodiment. In addition, the operation of the fingerprint touch device 300, the detection of the fingerprint contact event, and the operation of constructing the fingerprint pattern are the same as those of the first embodiment to the third embodiment, and thus are not described herein.

Referring to FIG. 7, the switch unit 21 may be a plurality of one-to-many switch circuits. The input end is configured to receive the scan pulse provided by the scan driving circuit 10, and the output end is electrically coupled to the scan lines G1 G Gm to form n. Inputs and m outputs, and it can be seen that n and m are both positive integers and n is less than m.

In some embodiments, the switching circuit is controlled to turn on with the scan pulse emitted by the scan driving circuit 10. For example, the switching circuit supplies one scan pulse to one hundred scan lines, wherein the one hundred scan lines are The actual implementation is just about the range of drive scan lines needed to get a fingerprint pattern. Based on the foregoing, when the scan driving circuit 10 supplies only a part of the scan pulse to the switch circuit, such as only the even shift register provides the scan pulse, and quickly determines whether a fingerprint contact event occurs. In some embodiments, when it is determined that a fingerprint contact event occurs, the processing circuit 12 can be logically designed to control the conduction of the switching circuit, such as the switching circuit can sequentially transmit the scan pulse to the scan line, and read each corresponding fingerprint contact. A fingerprint pattern is constructed by sensing data of the sensing unit of the event.

In some embodiments, the switch unit 21 can also be a plurality of demultiplexers or multi-stage demultiplexers, and the plurality of demultiplexers are electrically coupled to the scan driving circuit 10 and the scan lines G1 Gm. Between each multiplexer has n input terminals and m output terminals, and the input end of the demultiplexer is used to receive the scan pulse provided by the scan driving circuit 10, and the output end of the demultiplexer is electrically connected. The scanning lines G1 to Gm are coupled. In some embodiments, the plurality of demultiplexers are electrically coupled between the processing circuit 12 and the data lines D1 DDm, and the demultiplexer has n inputs and m outputs, and is demultiplexed. The input end of the multiplexer 22 is electrically coupled to the data lines D1 D Dm. It should be understood by those skilled in the art that if the switching unit is implemented by a multi-stage demultiplexer, the input signal of the switching unit will be less than that of the single-stage demultiplexer. In addition, those skilled in the art should also be able to understand various aspects of the multiplexer, for example, a pair of four solution multiplexers or three pairs of eight solution multiplexers, which are not described herein. When the switching unit is implemented by the demultiplexer, if the demultiplexer is enabled, the input of the demultiplexer receives a scan pulse provided by the scan driving circuit 10, Multiple outputs of the demultiplexer are passed to the scan line. In some embodiments, processing circuit 12 can be logically designed to control the various select lines of the demultiplexer in order to sequentially transmit scan pulses to the scan lines.

Referring to FIG. 7 and FIG. 8A together, in an embodiment, during the enable period of the scan pulse of the scan line G1, the processing circuit 12 sequentially transmits the drive pulse to the data lines D1 to Dm through the switch unit 22, and After the enabling period of the driving pulse of each of the data lines D1 to Dm ends, the processing circuit 12 reads the sensing data of the sensing unit 11 through the same data line. Thereby, the processing circuit 12 can sequentially receive the sensing data, detect whether a fingerprint contact event occurs, and obtain a fingerprint pattern according to the constructed data screen.

Referring to FIG. 7 and FIG. 8B together, in an embodiment, the data lines are divided into a plurality of groups, and the respective groups are sequentially in the enable period of the scan pulses of each scan line. The drive pulse is transmitted. In detail, during the enable period of the scan pulse of the scan line G1, the processing circuit 12 simultaneously transmits the drive pulse to the data lines D1 to D (m/n) through the switch unit 22, and at the data lines D1 to D (m/). After the end of the enable period of the drive pulse of n), the data lines D1 to D (m/n) simultaneously read the sensing data of the sensing unit 11. Then, the switching unit 22 simultaneously transmits the driving pulse to the data line D(m/n +1)~D(m*2/n), and in the data line D(m/n +1)~D(m*2/ After the end of the enable period of the drive pulse of n), the data line D(m/n +1)~D(m*2/n) simultaneously reads the sensing data of the sensing unit 11. Therefore, similarly, in the enable period of the scan pulse of each scan line, the plurality of groups sequentially transmit the drive pulse to the data line, and read the sense of the sensing unit via the plurality of groups. The data is measured, so the operation process of the subsequent group will not be described here.

Furthermore, the switching unit 22 can be implemented via a plurality of one-to-many switching circuits or via a plurality of demultiplexers (single or multiple stages). Furthermore, although the foregoing description is based on the scanning line G1, it should be understood by those skilled in the art after referring to the foregoing embodiments that the switching unit 21 is an arrangement for transmitting a scan pulse to a scanning line, and the switching unit 22 is a control data line. The manner of reading the sensing data, the fingerprint touch device of the present invention can reach the scanning line of the driving part by the configuration of the switching unit 21 and the switching unit 22 and control the data line of the control part to read the sensing data.

FIG. 9 is a schematic diagram of a configuration of a switch unit of a fingerprint touch device according to another embodiment of the present invention. Referring to FIG. 9 , the fingerprint touch device 400 further includes a switch unit 23 or/and 22 , and the switch unit 23 is located in the processing circuit 12 and Between the scan drive circuits 10. The switching unit 23 has a similar operating principle as the switching unit 21 of FIG. 8. In FIG. 9, the processing circuit 12 sends a control signal, such as a high-level signal, to the scan by controlling the conduction of the switching circuit 23. In the driving circuit 10, each stage shift register in the scan driving circuit 10 outputs a scan pulse as the start signal terminal receives the high level signal of each switch circuit 23. Therefore, the processing circuit 12 can be logically designed to control the output of the switching circuit 23, so that the scan driving circuit 10 supplies scan pulses only to a part of the scanning lines, and quickly determines whether a fingerprint contact event occurs. Furthermore, the switching circuit can sequentially transmit the scan pulse to the scan line. Alternatively, the scanning line of the driving portion can be reached by the configuration of the switching unit 23 and the switching unit 22, and the sensing data of the data line of the control portion can be read.

In some embodiments, the switching unit 21 (shown in FIG. 7) may be disposed between the scan driving circuit 10 and the scan lines G1 GGm, and the switching unit 23 is disposed between the processing circuit 12 and the scan driving circuit 10 ( As shown in Figure 9). Specifically, it is assumed that there are two thousand scan lines of the fingerprint touch device, and it is assumed that the scan lines are divided into twenty groups, that is, each output of the scan driving circuit 10 can be coupled through the switch unit 21 Up to one hundred scanning lines, and the processing circuit 12 can output twenty control signals to the scan driving circuit 10 through the switching unit 23. Thereby, the processing circuit 12 can control the switching unit 21 to sequentially transmit the scan pulse to the scan line according to the logic design, or only control the signal of the control unit of the switch unit 23 to be a high level signal and the switch unit 21 follows the scan. The scan pulse sent by the driving circuit 10 controls the conduction of the switch circuit to provide a scan pulse only to a part of the scan lines to quickly determine whether a fingerprint contact event occurs, or after detecting a fingerprint contact event, The corresponding range is used to expand the scanning and the scanning line of the driving portion can be reached by the configuration of the switching unit 21, the switching unit 22 and the switching unit 23, and the sensing data of the control portion of the control portion is read.

The fingerprint touch device of the present invention can determine the fingerprint contact event by reading the sensing data of each sensing unit through the arrangement of the scan line, the data line and the sensing unit, and is sufficient to construct the corresponding fingerprint according to the sensing data. The fingerprint pattern of the contact event. Moreover, the scan driving circuit can also provide a scan pulse to only a part of the scan lines to quickly determine whether a fingerprint contact event occurs.

While the invention has been described above by way of a preferred embodiment, it is not intended to limit the invention, and the invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application.

100, 200, 300, 400‧ ‧ fingerprint touch device
10‧‧‧Scan drive circuit
11, 11a, 11b‧‧‧ sensing unit
12‧‧‧Processing Circuit
13‧‧‧metal piece
21, 22, 23‧‧‧ switch unit
T1, T2‧‧‧ transistor
Cst‧‧‧ storage capacitor
Cf‧‧‧Induction Capacitor
G1~Gm‧‧‧ scan line
D1~ Dm‧‧‧ data line
D1~D(m/n), D(m/n +1)~D(m*2/n), D[m*(n-1)/n +1)~Dm‧‧‧ data line
R11~Rmm‧‧‧Reading line
Vcom‧‧‧Common potential line
P10, P11, P12, P13, P14‧‧ pulses
During t11, t12, t13, t14‧‧

FIG. 1 is a structural diagram of a fingerprint touch device according to a first embodiment of the present invention. 2 is a circuit diagram of a sensing unit according to a first embodiment of the present invention. FIG. 3A is a timing diagram of signals of a sensing unit according to an embodiment of the invention. FIG. 3B is a timing diagram of signals of a sensing unit according to still another embodiment of the present invention. 4 is a schematic view of a sensing unit of the present invention when a fingerprint contact event occurs. FIG. 5A is a structural diagram of a fingerprint touch device according to a second embodiment of the present invention. FIG. 5B is a circuit diagram of a sensing unit according to a second embodiment of the present invention. FIG. 5C is a timing diagram of the signal of the sensing unit of FIG. 5B. Figure 6 is a circuit diagram of a sensing unit in accordance with a third embodiment of the present invention. FIG. 7 is a schematic diagram of a configuration of a switch unit of a fingerprint touch device according to an embodiment of the invention. FIG. 8A is a timing diagram of driving signals of the fingerprint touch device according to an embodiment. FIG. 8B is a timing diagram of driving signals of the fingerprint touch device according to still another embodiment. FIG. 9 is a schematic diagram of a configuration of a switch unit of a fingerprint touch device according to another embodiment of the present invention.

100‧‧‧Finger touch device

10‧‧‧Scan drive circuit

11‧‧‧Sensor unit

12‧‧‧Processing Circuit

G1~Gm‧‧‧ scan line

D1~Dm‧‧‧ data line

Vcom‧‧‧Common potential line

Claims (16)

A fingerprint touch device includes: a scan line; a data line; a sensing unit electrically coupled to the scan line and the data line; a scan driving circuit electrically coupled to the scan line for providing the a scanning line-scanning pulse; and a processing circuit electrically coupled to the data line for providing at least one driving pulse of the data line during the enabling period of the scanning pulse, the enabling period of each driving pulse being less than the scanning period The processing circuit reads a sensed material of the sensing unit during the enable of the pulse and during the enable period of the scan pulse and after the enable period of each drive pulse ends. The fingerprint touch device of claim 1, wherein the sensing unit comprises: a transistor having a first end, a second end, and a control end, wherein the control end is electrically coupled to the scan The first end is electrically coupled to the data line; and a storage capacitor is electrically coupled to the second end and electrically coupled to a common potential. The fingerprint touch device of claim 1, wherein the sensing unit comprises: a first transistor having a first end, a second end, and a first control end, the first control end Electrically coupled to the scan line, the first end is electrically coupled to the data line; a storage capacitor having one end electrically coupled to the second end; and a second transistor having a third end, a first a fourth end and a second control end, the second control end is electrically coupled to the scan line, the third end is electrically coupled to the other end of the storage capacitor, and the fourth end is electrically coupled to a read line. The read line is electrically coupled to the processing circuit to transmit the sensing data. The fingerprint touch device of claim 1, wherein the sensing unit comprises: a transistor having a first end, a second end, and a control end, wherein the control end is electrically coupled to the scan a wire, wherein the first end is electrically coupled to the data line; and a metal piece electrically coupled to the second end. A fingerprint touch device includes: a plurality of scan lines; a plurality of data lines; a plurality of sensing units, each of the sensing units being electrically coupled to one of the scan lines and one of the data lines a scan driving circuit electrically coupled to the scan lines for respectively providing a plurality of scan pulses to at least a portion of the scan lines; and a processing circuit electrically coupling the data lines Providing at least one driving pulse for each data line during the enabling period of each scan pulse, the enabling period of each driving pulse is less than the enabling period of each scanning pulse, and the enabling of each scanning pulse After the end of the enabling period of each driving pulse, the processing circuit reads the plurality of sensing materials of the sensing units. The fingerprint touch device of claim 5, wherein each of the sensing units comprises: a transistor having a first end, a second end, and a control end, wherein the control end is electrically coupled to the One of the scan lines, the first end is electrically coupled to one of the data lines; and a storage capacitor is electrically coupled to the second end, and the other end is electrically coupled to a common a potential; wherein, during an enable period of each scan pulse and after an enable period of each drive pulse, the processing circuit reads the sensed data via each data line. The fingerprint touch device of claim 5, wherein each of the sensing units comprises: a first transistor having a first end, a second end, and a first control end, the first control The first end is electrically coupled to one of the data lines; the first end is electrically coupled to the second end; and the second end is electrically coupled to the second end; and a second The transistor has a third end, a fourth end, and a second control end. The second control end is electrically coupled to the first control end, and the third end is electrically coupled to the other end of the storage capacitor. The fourth end is electrically coupled to a read line, and the read line is electrically coupled to the processing circuit to transmit the sensing data. The fingerprint touch device of claim 5, wherein the sensing unit comprises: a transistor having a first end, a second end, and a control end, the control end electrically coupled to the scan a wire, wherein the first end is electrically coupled to the data line; and a metal piece electrically coupled to the second end. The fingerprint touch device of claim 5, further comprising at least one switch unit electrically coupled between the scan driving circuit and the scan lines, the at least one switch unit Having n input terminals and m output terminals, n and m are both positive integers and n is less than m, and any one of the at least one switch unit is configured to receive one of the scan pulses, and the at least one Any one of the output ends of the switch unit is electrically coupled to one of the scan lines. The fingerprint touch device of claim 5, further comprising at least one switch unit electrically coupled between the processing circuit and the data lines, the at least one switch unit having n input terminals and m output terminals, n and m are both positive integers and n is less than m, and any one of the at least one switching unit is configured to receive one of the driving pulses, and the at least one switch Any output of the unit is electrically coupled to one of the data lines. The fingerprint touch device of claim 5, further comprising at least one switch unit electrically coupled between the scan drive circuit and the processing circuit, the at least one switch unit having At least one input end and n output ends, n is a positive integer and n is greater than 1, and any one of the at least one switch unit is configured to receive a control signal of the processing circuit, and any one of the at least one switch unit The output end is electrically coupled to the scan driving circuit. The fingerprint touch device of claim 5, wherein the scan driving circuit divides the scan lines into a plurality of groups and respectively provides a plurality of scan pulses to the groups. A driving method of a fingerprint touch device, the fingerprint touch device has a sensing unit, a scan line and a data line, and the sensing unit is electrically coupled to the scan line and the data line, and the driving method comprises: Providing a scan pulse to the scan line; providing at least one drive pulse of the data line during an enable period of the scan pulse, and an enable period of each of the drive pulses is less than an enable period of the scan pulse; and in the scanning After the energization period of the pulse and the end of the enable period of each of the drive pulses, one of the sensing units is sensed through the data line. A driving method of a fingerprint touch device, the fingerprint touch device has a sensing unit, a scan line and a data line, and the sensing unit is electrically coupled to the scan line and the data line, and the driving method comprises: Providing a scan pulse to the scan line; providing at least one drive pulse of the data line during an enable period of the scan pulse, and an enable period of each of the drive pulses is less than an enable period of the scan pulse; and in the scanning The sensing data is read by a read line, and the read line is electrically coupled to the sensing unit. A method for driving a fingerprint touch device, the fingerprint touch device includes a plurality of scan lines, a plurality of data lines, and a plurality of sensing units, each of the sensing units being electrically coupled to one of the scan lines and the One of the data lines, the driving method includes: respectively providing a plurality of scan pulses to at least a portion of the scan lines; and providing at least one of each data line during an enable period of each scan pulse Driving pulses, and the enable period of each drive pulse is less than the enable period of each scan pulse; A plurality of sensing materials of the sensing units are read during an enable period of each scan pulse and after an enable period of each drive pulse ends. The driving method of claim 15, further comprising dividing the scan lines into a plurality of groups and respectively providing a plurality of scan pulses to the groups.