Touch devices with fingerprint recognition function and their operation methods

Abstract

A touch device with fingerprint recognition function and its operation method are disclosed. The touch device with fingerprint recognition function includes multiple sensing areas, multiple first switch groups, multiple first shift storage circuits, multiple second switch groups, and multiple second shift storage circuits. Each sensing area includes multiple transmitting electrodes and multiple receiving electrodes. The first switch groups are coupled to the transmitting electrodes and are used to transmit a first signal. The first shift storage circuits are used to control the first switch groups according to multiple first reset signals and multiple first control signals. The second switch groups are coupled to the receiving electrodes and are used to receive a second signal. The second shift storage circuits are used to control the second switch groups according to a second reset signal and multiple second control signals. The first and second signals are for touch operation and fingerprint recognition operation. Touch operation and fingerprint recognition operation can be implemented using the same transmitting electrodes and the same receiving electrodes in the sensing areas.

Description

Technical Field

[0001] The embodiments described in this disclosure relate to touch technology and fingerprint recognition technology, and particularly to a touch device with fingerprint recognition function and its operation method. Background Technology

[0002] With the development of technology, electronic devices that support touch and fingerprint recognition have been applied in many fields. In other words, these electronic devices are designed to determine the user's touch position and recognize the user's fingerprint. Summary of the Invention

[0003] This disclosure relates to a touch device with fingerprint recognition functionality. The touch device with fingerprint recognition functionality includes multiple sensing areas, multiple first switch groups, multiple first shift register circuits, multiple second switch groups, and multiple second shift register circuits. The sensing areas include multiple transmitting electrodes and multiple receiving electrodes. The first switch groups are coupled to the transmitting electrodes and are used to transmit a first signal. The first shift register circuits are used to control the first switch groups according to multiple first reset signals and multiple first control signals. The second switch groups are coupled to the receiving electrodes and are used to receive a second signal. The second shift register circuits are used to control the second switch groups according to a second reset signal and multiple second control signals. The first signal and the second signal are for a touch operation and a fingerprint recognition operation.

[0004] In some embodiments, the first shift storage circuits control the first switch groups according to a first clock signal, the first reset signals and the first control signals, and the first switch groups transmit a first signal.

[0005] In some embodiments, the second shift storage circuits control the second switch groups according to a second clock signal, a plurality of second reset signals and the second control signals, and the second switch groups receive the second signal.

[0006] In some embodiments, for touch operation, one of the first shift buffer circuits activates a plurality of switches in one of the first switch groups according to one of the first reset signals.

[0007] In some embodiments, for touch operation, one of the second shift buffer circuits activates a plurality of switches in one of the second switch groups according to one of the second reset signals.

[0008] In some embodiments, when a touch operation is performed at a location within one of the sensing areas, the one of the sensing areas is determined, wherein, based on the one of the sensing areas, one of the first switch groups and one of the second switch groups are selected.

[0009] In some embodiments, for fingerprint recognition operation, a selected first switch group sequentially turns on a plurality of switches in one of the first switch groups according to one of the first control signals and a first clock signal.

[0010] In some embodiments, when the selected first switch group turns on the switches in one of the first switch groups, for fingerprint recognition operation, the selected second switch group sequentially turns on a plurality of switches in one of the second switch groups according to one of the second control signals and a second clock signal.

[0011] In some embodiments, the second shift storage circuits control the second switch groups according to a second clock signal, a second reset signal and the second control signals, and the second switch groups respectively receive a plurality of second signals.

[0012] In some embodiments, the first shift storage circuits control the first switch groups according to a first clock signal, the first reset signals and the first control signals, and the first switch groups transmit a plurality of first signals respectively.

[0013] In some embodiments, the second shift storage circuits control the second switch groups according to a second clock signal, a plurality of first reset signals and the second control signals, and the second switch groups respectively receive a plurality of second signals.

[0014] In some embodiments, touch operation and fingerprint recognition operation are performed simultaneously.

[0015] In some embodiments, the first shift registers and the second shift registers are connected to a plurality of signal lines, and the signal lines are connected to the transmit electrodes and the receive electrodes via a ramp-up mechanism.

[0016] In some embodiments, the first shift storage circuits and the second shift storage circuits are connected to the transmit electrodes and the receive electrodes through a plurality of vias.

[0017] In some embodiments, the touch device with fingerprint recognition function is a mutual-capacity type.

[0018] In some embodiments, the touch device with fingerprint recognition function is a self-contained type.

[0019] This disclosure relates to a method of operating a touch device with fingerprint recognition functionality. The method includes the following operations: controlling multiple first switch groups via multiple first shift registers based on multiple first reset signals and multiple first control signals, wherein these first switch groups are coupled to multiple transmission electrodes to transmit a first signal; and controlling multiple second switch groups via multiple second shift registers based on a second reset signal and multiple second control signals, wherein these second switch groups are coupled to multiple receiving electrodes to receive a second signal. The first and second signals are for a touch operation and a fingerprint recognition operation. Attached Figure Description

[0020] To make the above and other objects, features, advantages and embodiments disclosed herein more apparent and understandable, the accompanying drawings are described below:

[0021] Figure 1 This is a schematic diagram illustrating a touch device with fingerprint recognition function performing touch operation according to some embodiments of this disclosure;

[0022] Figure 2 It is illustrated in accordance with some embodiments of this disclosure. Figure 1 Timing diagrams of multiple signals;

[0023] Figure 3 It is illustrated in accordance with some embodiments of this disclosure. Figure 1 A schematic diagram of a touch device with fingerprint recognition function switching from touch operation to fingerprint recognition operation;

[0024] Figure 4 It is illustrated in accordance with some embodiments of this disclosure. Figure 1 A schematic diagram illustrating the fingerprint recognition operation of a touch device with fingerprint recognition functionality;

[0025] Figure 5 It is illustrated in accordance with some embodiments of this disclosure. Figure 4 Timing diagrams of multiple signals;

[0026] Figure 6 This is a schematic diagram illustrating a touch device with fingerprint recognition function performing touch operation according to some embodiments of this disclosure;

[0027] Figure 7 It is illustrated in accordance with some embodiments of this disclosure. Figure 6 Timing diagrams of multiple signals;

[0028] Figure 8 It is illustrated in accordance with some embodiments of this disclosure. Figure 6 A schematic diagram illustrating the fingerprint recognition operation of a touch device with fingerprint recognition functionality;

[0029] Figure 9 It is illustrated in accordance with some embodiments of this disclosure. Figure 8 Timing diagrams of multiple signals;

[0030] Figure 10 This is a schematic diagram illustrating a touch device with fingerprint recognition function that simultaneously performs touch operation and fingerprint recognition operation according to some embodiments of this disclosure;

[0031] Figure 11 This is a schematic diagram of a touch device with fingerprint recognition function illustrated in some embodiments of this disclosure;

[0032] Figure 12 It is illustrated in accordance with some embodiments of this disclosure. Figure 11 A schematic diagram of a touch device with fingerprint recognition function performing both touch operation and fingerprint recognition operation simultaneously;

[0033] Figure 13A This is a schematic diagram illustrating an on-cell stacked structure of organic light-emitting diodes according to some embodiments of this disclosure;

[0034] Figure 13B This is a schematic diagram of an externally stacked organic light-emitting diode structure illustrated in some embodiments of this disclosure;

[0035] Figure 14 This is a schematic diagram of an apparatus having an externally stacked structure, illustrated in accordance with some embodiments of this disclosure;

[0036] Figure 15 This is a schematic diagram of an apparatus having an externally stacked structure, illustrated in accordance with some embodiments of this disclosure;

[0037] Figure 16 This is a schematic diagram of a touch device with fingerprint recognition function illustrated in some embodiments of this disclosure;

[0038] Figure 17 This is a schematic diagram of a touch device with fingerprint recognition function illustrated according to some embodiments of the present disclosure; and

[0039] Figure 18 This is a schematic diagram illustrating an operating method according to some embodiments of the present disclosure.

[0040] [Symbol Explanation]

[0041] 100, 600, 1000, 1100, 1600, 1700: Touchscreen device

[0042] 102,102',102”: Transmission electrode

[0043] 104,104',104”: Receiving electrode

[0044] 106, 108: Sensing electrodes

[0045] 1300a, 1300b: Organic light-emitting diodes with external stacked structure

[0046] 1301a, 1301b: Cathode layer

[0047] 1302a, 1302b: Thin film encapsulation layer

[0048] 1303, 1303b: Metal mesh layer

[0049] 1304a, 1304b: Polarizing layer

[0050] 1305a, 1305b: Optically transparent adhesive layers

[0051] 1306a, 1306b: Covering glass layer

[0052] 1307a, 1307b: Circuit Region

[0053] 1308a: Signal line

[0054] 1309b: Through hole

[0055] 1400, 1500: Device

[0056] 1401, 1501: Backside copper

[0057] 1402,1502:Substrate

[0058] 1403, 1503: Metal mesh layer

[0059] 1404, 1504: Flexible printed circuit boards

[0060] 1405, 1406, 1506: Circuit regions

[0061] 1407, 1408, 1507: Processing circuits

[0062] 1800: Operating Method

[0063] MX1,MX2,MY1,MY2,MX1',MX2',MY1',MY2',MX1”,MX2”,MY1”,MY2”,MX1a,MX2a,MXb: Switch group

[0064] SRX1, SRX2, SRY1, SRY2, SRX1', SRX2', SRY1', SRY2', SRX1”, SRX2”, SRY1”, SRY2”, SRX1a, SRX2a, SRXb: Shift temporary storage circuit

[0065] CLK_X,CLK_Y,CLK_X',CLK_Y',CLK_X”,CLK_Y”,CLK_Xa,CLK_Xb: Clock signals

[0066] STV_X1,STV_X2,STV_Y1,STV_Y2,STV_X1',STV_X2',STV_Y1',STV_Y2',STV_X1”,STV_X2”,STV_Y1”,STV_Y2”,STV_X1a,STV_X2a,STV_Xb: control signal

[0067] RST_X1,RST_X2,RST_Y1,RST_Y2,RST_X1',RST_X2',RST_Y',RST_X1”,RST_X2”,RST_Y1”,RST_Y2”,RST_X1a,RST_X2a,RST_Xb: Reset signal

[0068] A,A1,A2,A',A3,A4,A5,A”,A6,A7,Aa,Ab: Sensing area

[0069] TX, TX', TX_X1”, TX_X2”, TXa, TXb: Transmitted signals

[0070] RX,RX_Y1',RX_Y2',RX_Y1”,RX_Y2”,RXa,RXb: Received signals

[0071] T1, T2, T3, T4: Time points

[0072] F: finger

[0073] P1, P2, P3, P4: Positions

[0074] D1, D2, D3, D1', D2': Time intervals

[0075] S1802, S1804: Operation Detailed Implementation

[0076] refer to Figure 1 . Figure 1 This is a schematic diagram illustrating a touch device 100 with fingerprint recognition function performing touch operation according to some embodiments of this disclosure. Figure 1 The device can perform not only touch functions but also fingerprint recognition functions.

[0077] In some embodiments, the touch device 100 with fingerprint recognition function can be integrated with a display device to form a fingerprint, touch, and display integration (FTDI) device. For example, the touch device 100 with fingerprint recognition function can be disposed in a smartphone or other electronic device. The display device can be an organic light-emitting diode display device or other types of display devices.

[0078] by Figure 1 For example, a touch device 100 with fingerprint recognition function includes a sensing area A, switch groups MX1-MX2, shift register circuits SRX1-SRX2, switch groups MY1-MY2, and shift register circuits SRY1-SRY2. Each shift register circuit SRX1-SRX2 and each shift register circuit SRY1-SRY2 includes multiple shift registers.

[0079] Each sensing area A includes multiple transmitting electrodes 102 and multiple receiving electrodes 104. A capacitor is formed between one transmitting electrode 102 and a corresponding receiving electrode 104. These transmitting electrodes 102 and receiving electrodes 104 can be used to perform touch functionality and fingerprint recognition functionality. In other words, touch functionality and fingerprint recognition functionality share these transmitting electrodes 102 and receiving electrodes 104. This method can be used to implement a full-screen fingerprint recognition mechanism.

[0080] Switch groups MX1-MX2 are coupled to the transmission electrodes 102. For example, each switch in switch groups MX1-MX2 is coupled to one column of transmission electrodes 102. Shift register circuits SRX1-SRX2 are coupled to switch groups MX1-MX2 respectively. The switches in switch groups MX1-MX2 receive the transmission signal TX and transmit the transmission signal TX to the transmission electrodes 102. Shift register circuits SRX1-SRX2 control the switches in switch groups MX1-MX2 according to the clock signal CLK_X, reset signals RST_X1-RST_X2, and control signals STV_X1-STV_X2 respectively.

[0081] Switch groups MY1-MY2 are coupled to the receiving electrodes 104. For example, each switch in switch groups MY1-MY2 is coupled to one row of receiving electrodes 104. Shift register circuits SRY1-SRY2 are coupled to switch groups MY1-MY2 respectively. The switches in switch groups MY1-MY2 receive the received signal RX from the receiving electrodes 104. Shift register circuits SRY1-SRY2 control the switches in switch groups MY1-MY2 according to the clock signal CLK_Y, reset signals RST_Y1-RST_Y2, and control signals STV_Y1-STV_Y2 respectively.

[0082] With this configuration, the touch device 100 with fingerprint recognition function has a mutually compatible structure.

[0083] It should be noted that, Figure 1 The number of sensing areas A, switch groups MX1-MX2, shift register circuits SRX1-SRX2, switch groups MY1-MY2, and shift register circuits SRY1-SRY2 is for illustrative purposes only and is not intended to be limiting. For example, a touch device 100 with fingerprint recognition function may include 32 switch groups to receive the transmitted signal TX and 36 switch groups to receive the received signal RX. In this example, an array would contain 36×32 channels.

[0084] Also refer to Figure 1 as well as Figure 2 . Figure 2 It is illustrated in accordance with some embodiments of this disclosure. Figure 1 Timing diagrams of multiple signals.

[0085] During touch operation, the transmission signal TX is the touch transmission signal, and the reception signal RX is the touch reception signal.

[0086] by Figure 2 For example, at time T1, the reset signal RST_X1 switches from a disabled level to an enabled level. Accordingly, the shift register circuit SRX1 activates the switches in switch group MX1 based on the reset signal RST_X1. In this case, the capacitors of the sensing areas A in the first column are connected in parallel. The activated switches in switch group MX1 transmit the touch transmission signal TX to the transmission electrodes 102 in the sensing areas A in the first column. Additionally, the reset signal RST_Y1 switches from a disabled level to an enabled level. Accordingly, the shift register circuit SRY1 activates the switches in switch group MY1 based on the reset signal RST_Y1. In this case, the capacitors of the sensing areas A in the first row are connected in parallel. The activated switches in switch group MY1 receive the touch reception signal RX from the receiving electrodes 104 of the sensing areas A in the first row, and then transmit the touch reception signal RX to a processing circuit (not shown).

[0087] At time T2, the reset signal RST_X1 still has an enable level, and the reset signal RST_Y2 switches from a disable level to an enable level. Accordingly, the shift register circuit SRY2 turns on the switches in switch group MY2 based on the reset signal RST_Y2. In this case, the capacitors of the sensing areas A in the second row are connected in parallel. The turned-on switches in switch group MY2 receive the touch reception signal RX from the receiving electrodes 104 of the sensing areas A in the second row, and then transmit the touch reception signal RX to the processing circuit.

[0088] At time T3, the reset signal RST_X2 switches from a disabled level to an enabled level. Accordingly, the shift register circuit SRX2 activates the switches in switch group MX2 based on the reset signal RST_X2. In this case, the capacitors of the sensing areas A in the second column are connected in parallel. The activated switches in switch group MX2 transmit the touch transmission signal TX to the transmission electrodes 102 of the sensing areas A in the second column. Additionally, the reset signal RST_Y1 switches from a disabled level to an enabled level. The shift register circuit SRY1 activates the switches in switch group MY1 based on the reset signal RST_Y1. In this case, the capacitors of the sensing areas A in the first row are connected in parallel. The activated switches in switch group MY1 receive the touch reception signal RX from the receiving electrodes 104 of the sensing areas A in the first row, and then transmit the touch reception signal RX to the processing circuit.

[0089] At time T4, the reset signal RST_X2 still has an enable level, and the reset signal RST_Y2 switches from a disable level to an enable level. Accordingly, the shift register circuit SRY2 turns on the switches in switch group MY2 based on the reset signal RST_Y2. In this case, the capacitors of the sensing areas A in the second row are connected in parallel. The turned-on switches in switch group MY2 receive the touch reception signal RX from the receiving electrodes 104 of the sensing areas A in the second row, and then transmit the touch reception signal RX to the processing circuit.

[0090] Based on similar operation, the processing circuit receives touch reception signals RX from each sensing area A. The voltage of the touch reception signal RX reflects a capacitance value. For example, if a touch event occurs at a location corresponding to a transmitting electrode 102 and a receiving electrode 104, the capacitance value between the transmitting electrode 102 and the receiving electrode 104 will change. Accordingly, the processing circuit can determine the touch location based on the corresponding touch reception signal RX.

[0091] It should be noted that touch operation is mainly controlled by reset signals RST_X1-RST_X2 and RST_Y1-RST_Y2, and clock signals CLK_X and CLK_Y have disabled levels.

[0092] refer to Figure 3 . Figure 3 It is illustrated in accordance with some embodiments of this disclosure. Figure 1 A schematic diagram of a touch device 100 with fingerprint recognition function switching from touch operation to fingerprint recognition operation.

[0093] by Figure 3 For example, if finger F touches position P1 on touch device 100 with fingerprint recognition function, the sensing area A1 corresponding to position P1 is determined for subsequent fingerprint recognition function.

[0094] refer to Figure 4 as well as Figure 5 . Figure 4 It is illustrated in accordance with some embodiments of this disclosure. Figure 1 A schematic diagram of a touch device 100 with fingerprint recognition function performing fingerprint recognition operation. Figure 5 It is illustrated in accordance with some embodiments of this disclosure. Figure 4 Timing diagrams of multiple signals.

[0095] As described above, if a finger touches position P2 on the touch device 100 with fingerprint recognition function, the sensing area A2 corresponding to position P2 is determined for subsequent fingerprint recognition function. Since the coordinates of the sensing area A2 are located in the second column and the second row, the shift storage circuit SRX2 and the shift storage circuit SRY2 can be selected according to the coordinates of the sensing area A2.

[0096] During fingerprint recognition operation, the transmission signal TX is the fingerprint recognition transmission signal, and the reception signal RX is the fingerprint recognition reception signal.

[0097] by Figure 5 For example, during time interval D1, control signal STV_X2 has an enable level and clock signal CLK_X has an enable level. Accordingly, the selected shift register circuit SRX2 is activated according to control signal STV_X2 and turns on the first switch in switch group MX2 according to clock signal CLK_X. The first switch in switch group MX2 that is turned on transmits the fingerprint recognition transmission signal TX to the corresponding transmission electrodes 102. In addition, during time interval D1, control signal STV_Y2 has one pulse and clock signal CLK_Y has multiple pulses. Accordingly, the selected shift register circuit SRY2 is activated according to control signal STV_Y2 and sequentially turns on the switches in switch group MY2 according to clock signal CLK_Y. The switches in switch group MY2 sequentially receive the fingerprint recognition reception signals RX from the corresponding receiving electrodes 104 and transmit the fingerprint recognition reception signals RX to the processing circuit.

[0098] During time interval D2, the clock signal CLK_X has an enable level. Accordingly, the selected shift register circuit SRX2 activates the second switch in switch group MX2 based on the clock signal CLK_X. The activated second switch in switch group MX2 transmits the fingerprint recognition transmission signal TX to the corresponding transmission electrodes 102. Additionally, during time interval D2, the clock signal CLK_Y has multiple pulses. Accordingly, the selected shift register circuit SRY2 sequentially activates the switches in switch group MY2 based on the clock signal CLK_Y. The activated switches in switch group MY2 sequentially receive the fingerprint recognition reception signals RX from the corresponding receiving electrodes 104 and transmit these fingerprint recognition reception signals RX to the processing circuit.

[0099] Based on similar operation, the transmitting electrodes 102 and receiving electrodes 104 in sensing area A2 are sensed, and the processing circuit receives the fingerprint recognition reception signals RX from sensing area A2. The voltage of a fingerprint recognition reception signal RX can reflect a capacitance value. The voltage of the fingerprint recognition reception signals RX can be converted into a digital signal by an analog-to-digital converter. The digital signal can indicate the peaks and troughs of the fingerprint of finger F. Accordingly, the processing circuit can perform fingerprint recognition operation based on the digital signal.

[0100] With this configuration, each shift register circuit SRX1-SRX2 and SRY1-SRY2 is connected to a column or row of sensing area A. Thus, each shift register circuit SRX1-SRX2 and SRY1-SRY2 can be controlled by fewer signals, and the number of pins can be reduced.

[0101] It should be noted that fingerprint recognition is mainly controlled by clock signals CLK_X and CLK_Y, and reset signals RST_X1-RST_X2 and RST_Y1-RST_Y2 have disable levels.

[0102] refer to Figure 6 . Figure 6 This is a schematic diagram illustrating a touch device 600 with fingerprint recognition function performing touch operation according to some embodiments of this disclosure.

[0103] Figure 6 The configuration of the transmission electrodes 102', the receiving electrodes 104', the sensing areas A', the shift buffer circuits SRX1'-SRX2', the switch groups MX1'-MX2', the switch groups MY1'-MY2', the clock signals CLK_X' and CLK_Y', the control signals STV_X1'-STV_X2', the control signals STV_Y1'-STV_Y2', the reset signals RST_X1'-RST_X2', and the transmission signal TX' is similar to Figure 1The configuration of the transmission electrodes 102, the receiving electrodes 104, the sensing areas A, the shift storage circuits SRX1-SRX2, the switch groups MX1-MX2, the switch groups MY1-MY2, the clock signals CLK_X and CLK_Y, the control signals STV_X1-STV_X2, the control signals STV_Y1-STV_Y, the reset signals RST_X1-RST_X2, and the transmission signal TX.

[0104] refer to Figure 6 as well as Figure 7 . Figure 7 It is illustrated in accordance with some embodiments of this disclosure. Figure 6 Timing diagrams of multiple signals.

[0105] Figure 6 and Figure 1 One of the main differences between them is that, Figure 6 The shift temporary storage circuits SRY1'-SRY2' are controlled by the same reset signal RST_Y'.

[0106] Therefore, with Figure 7 For example, during time interval D3, the reset signal RST_Y' is at the enable level, and the shift register circuits SRY1'-SRY2' turn on the switches in switch groups MY1'-MY2' according to the reset signal RST_Y'. Additionally, during time interval D3, the reset signals RST_X1'-RST_X2' sequentially switch from the disable level to the enable level. Accordingly, the shift register circuit SRX1' first turns on the switches in switch group MX1' according to the reset signal RST_X1', and then the shift register circuit SRX2' turns on the switches in switch group MX2' according to the reset signal RST_X2'.

[0107] When the shift buffer circuit SRX1' turns on the switches in switch group MX1', the switches in switch group MX1' that are turned on transmit the touch transmission signal TX to the transmission electrode 102' of the first row of sensing areas A'. Since the switches in switch groups MY1'-MY2' are turned on, the switches in switch group MY1' receive the touch reception signal RX_Y1' from the receiving electrode 104' of the first row of sensing areas A', and the switches in switch group MY2' receive the touch reception signal RX_Y2' from the receiving electrode 104' of the second row of sensing areas A'.

[0108] Next, when the shift buffer circuit SRX2' turns on the switches in switch group MX2', the turned-on switches in switch group MX2' transmit the touch transmission signal TX' to the transmission electrode 102' of the second row of sensing areas A'. Since the switches in switch groups MY1'-MY2' are turned on, the switches in switch group MY1' receive the touch reception signal RX_Y1' from the receiving electrode 104' of the first row of sensing areas A', and the switches in switch group MY2' receive the touch reception signal RX_Y2' from the receiving electrode 104' of the second row of sensing areas A'.

[0109] Based on similar operation, the processing circuit receives touch sensing signals RX_Y1'-RX_Y2' from different rows. Then, the processing circuit can determine the touch position based on the touch sensing signals RX_Y1'-RX_Y2'.

[0110] refer to Figure 8 as well as Figure 9 . Figure 8 It is illustrated in accordance with some embodiments of this disclosure. Figure 6 A schematic diagram of a touch device 600 with fingerprint recognition function performing fingerprint recognition operation. Figure 9 It is illustrated in accordance with some embodiments of this disclosure. Figure 8 Timing diagrams of multiple signals.

[0111] Similar to Figure 4 If a finger touches position P3 on the touch device 600 with fingerprint recognition function, the sensing area A3 corresponding to position P3 is determined for subsequent fingerprint recognition function. Since the coordinates of the sensing area A3 are located in the second column and the second row, the shift storage circuit SRX2' and the shift storage circuit SRY2' can be selected according to the coordinates of the sensing area A3.

[0112] by Figure 9For example, during time interval D1', the control signal STV_X2' has an enable level and the clock signal CLK_X' has an enable level. Accordingly, the selected shift register circuit SRX2' is activated according to the control signal STV_X2' and turns on the first switch in switch group MX2' according to the clock signal CLK_X'. The first switch in switch group MX2, which is turned on, transmits the fingerprint recognition transmission signal TX' to the corresponding transmission electrodes 102'. Additionally, during time interval D1', the control signal STV_Y2' has one pulse and the clock signal CLK_Y' has multiple pulses. Accordingly, the selected shift register circuit SRY2' is activated according to the control signal STV_Y2' and sequentially turns on the switches in switch group MY2' according to the clock signal CLK_Y'. In the switch group MY2', the turned-on switches sequentially receive the fingerprint recognition reception signals RX_Y2' from the corresponding receiving electrodes 104', and then transmit the fingerprint recognition reception signals RX_Y2' to the processing circuit.

[0113] During time interval D2', the clock signal CLK_X' has an enable level. Accordingly, the selected shift register circuit SRX2' turns on the second switch in switch group MX2 according to the clock signal CLK_X'. The turned-on second switch in switch group MX2' transmits the fingerprint identification transmission signal TX' to the corresponding transmission electrodes 102'. Additionally, during time interval D2', the clock signal CLK_Y' has multiple pulses. Accordingly, the selected shift register circuit SRY2' sequentially turns on the switches in switch group MY2' according to the clock signal CLK_Y'. The turned-on switches in switch group MY2' sequentially receive the fingerprint identification reception signals RX_Y2' from the corresponding receiving electrodes 104' and transmit the fingerprint identification reception signals RX_Y2' to the processing circuit.

[0114] Based on similar operation, the transmitting electrodes 102' and receiving electrodes 104' in the sensing area A3 are sensed, and the processing circuit receives the fingerprint identification reception signals RX_Y2' in the sensing area A3. Then, the processing circuit can execute a fingerprint identification procedure based on the digital signals corresponding to the fingerprint identification reception signals RX_Y2'.

[0115] With this configuration, the shift buffer circuits SRY1'-SRY2' can operate at a faster speed because they correspond to different received signals RX_Y1'-RX_Y2' respectively.

[0116] refer to Figure 10 . Figure 10 This is a schematic diagram illustrating a touch device 1000 with fingerprint recognition function simultaneously performing touch operation and fingerprint recognition operation according to some embodiments of this disclosure.

[0117] In some embodiments, touch operation and fingerprint recognition operation can be performed simultaneously and on different sensing areas of the touch device 1000 with fingerprint recognition function. Figure 10 For example, when one finger touches the sensing area A4 and the touch device 1000 with fingerprint recognition function, a touch operation is performed accordingly. When another finger touches the sensing area A5 and the touch device 1000 with fingerprint recognition function, a fingerprint recognition operation is performed accordingly.

[0118] refer to Figure 11 . Figure 11 This is a schematic diagram of a touch device 1100 with fingerprint recognition function, illustrated in accordance with some embodiments of this disclosure.

[0119] Figure 11 The configurations of the transmission electrodes 102”, the receiving electrodes 104”, the sensing areas A”, the shift buffer circuits SRX1”-SRX2”, the switch groups MY1”-MY2”, the clock signals CLK_X” and CLK_Y”, the control signals STV_X1”-STV_X2”, STV_Y1”-STV_Y2”, the reset signals RST_X1”-RST_X2”, and the receiving signals RX_Y1”-RX_Y2” are similar to those of the transmission electrodes 102”, the receiving electrodes 104”, the sensing areas A”, the shift buffer circuits SRX1”-SRX2”, the switch groups MY1”-MY2”, the clock signals CLK_X” and CLK_Y”, the control signals STV_X1”-STV_X2”, STV_Y1”-STV_Y2”, the reset signals RST_X1”-RST_X2”, and the receiving signals RX_Y1”-RX_Y2”. Figure 6 The configuration of the transmission electrodes 102', the receiving electrodes 104', the sensing areas A', the shift storage circuits SRX1'-SRX2', the switch groups MY1'-MY2', the clock signals CLK_X' and CLK_Y', the control signals STV_X1'-STV_X2' and STV_Y1'-STV_Y2', the reset signals RST_X1'-RST_X2', and the receiving signals RX_Y1'-RX_Y2'.

[0120] Figure 11 and Figure 6 One of the main differences between them is that, Figure 11 The switch groups MX1”-MX2” in the middle receive different transmitted signals TX_X1”-TX_X2” respectively. Figure 11 and Figure 6 Another major difference between them is that, Figure 11 The shift register circuits SRY1” and SRY2” are controlled by different reset signals RST_Y1”-RST_Y2” respectively. In other words, Figure 11 Different sensing regions A” are respectively connected to different shift register circuits SRX1”-SRX2” and different shift register circuits SRY1”-SRY2”. Thus, Figure 11 These sensing areas A” are controlled independently.

[0121] refer to Figure 12 . Figure 12 It is illustrated in accordance with some embodiments of this disclosure. Figure 11 A schematic diagram of a touch device 1100 with fingerprint recognition function performing touch operation and fingerprint recognition operation simultaneously.

[0122] Touch operation and fingerprint recognition operation can be performed simultaneously on different sensing areas of the touch device 1100 with fingerprint recognition function. Figure 12 For example, a touch operation is performed on the sensing area A6, and a fingerprint recognition operation is performed on the sensing area A7 corresponding to the touch position P4.

[0123] Regarding touch operation, the shift storage circuit SRX1 turns on the switches in the switch group MX1, and the turned-on switches in the switch group MX1 transmit the touch transmission signal TX_X1 to the transmission electrode 102 in the first column of the sensing areas. Additionally, the shift storage circuit SRY1 turns on the switches in the switch group MY1, and the turned-on switches in the switch group MY1 receive the touch reception signal RX_Y1 from the receiving electrode 104 in the first row of the sensing areas. Thus, touch operation can be performed on the sensing areas A6 located in the first column and the first row.

[0124] Regarding fingerprint recognition operation, based on the coordinates of sensing area A7, shift storage circuits SRX2” and SRY2” can be selected. Shift storage circuit SRX2” turns on the first switch in switch group MX2”, and the first switch in switch group MX2” transmits the fingerprint recognition transmission signal TX_X2” to the transmission electrode 102” of the sensing areas in the second column. Additionally, shift storage circuit SRY2” sequentially turns on the switches in switch group MY2”, and the turned-on switches in switch group MY2” receive the fingerprint recognition reception signal RX_Y2” from the receiving electrode 104” of the sensing areas in the second row. Then, similarly, shift storage circuit SRX2” turns on the second switch in switch group MX2”, and shift storage circuit SRY2” sequentially turns on the switches in switch group MY2”. In this way, fingerprint recognition operation can be performed on sensing areas A7 located in the second column and second row.

[0125] With this configuration, touch operation and fingerprint recognition operation can be performed simultaneously on different sensing areas A6 and A7 on the touch device 1100 with fingerprint recognition function.

[0126] It should be noted that in this example, the reset signals RST_X2” and RST_Y2” corresponding to the fingerprint recognition sensing area A7 have a disabled level, and the control signals STV_X1” and STV_Y1” corresponding to the touch sensing area A6 have a disabled level.

[0127] refer to Figure 13A . Figure 13A This is a schematic diagram of an on-cell organic light-emitting diode stacked structure 1300a illustrated in accordance with some embodiments of this disclosure.

[0128] by Figure 13A For example, the organic light-emitting diode external stacked structure 1300a includes a cathode layer 1301a, a thin film encapsulation (TFE) layer 1302a, a metal mesh layer 1303a, a polarizing layer 1304a, an optical clear adhesive (OCA) layer 1305a, a cover glass layer 1306a, a circuit region 1307a, and a signal line 1308a.

[0129] A cathode layer 1301a is used for emitting light. A thin-film encapsulation layer 1302a is disposed on the cathode layer 1301a. A metal mesh layer 1303a is disposed on the thin-film encapsulation layer 1302a and includes... Figure 1 The transmission electrodes 102 and the receiving electrodes 104 (or Figure 6 The transmission electrodes 102' and the receiving electrodes 104', or Figure 11 The transmission electrodes 102” and the receiving electrodes 104” are included. A polarizing layer 1304a is disposed on the metal mesh layer 1303a. An optically transparent adhesive layer 1305a is disposed on the polarizing layer 1304a. A cover glass layer 1306a is disposed on the optically transparent adhesive layer 1305a. A circuit region 1307a is disposed on the cathode layer 1301a and includes… Figure 1 The shift register circuits SRX1-SRX2 and SRY1-SRY2 (or Figure 6 The shift temporary storage circuits SRX1'-SRX2' and SRY1'-SRY2' in the middle, or Figure 11 The shift register circuits SRX1”-SRX2” and shift register circuits SRY1”-SRY2” are in circuit region 1307a. These shift register circuits in circuit region 1307a are connected to signal lines 1308a, and these signal lines 1308a are connected to the electrodes in metal mesh layer 1303a by a climbing method or other means.

[0130] refer to Figure 13B . Figure 13B This is a schematic diagram of an external stacked organic light-emitting diode structure 1300b illustrated in accordance with some embodiments of this disclosure.

[0131] by Figure 13BFor example, the OLED external stacked structure 1300b includes a cathode layer 1301b, a thin-film encapsulation layer 1302b, a metal mesh layer 1303b, a polarizing layer 1304b, an optically transparent adhesive layer 1305b, a cover glass layer 1306b, a circuit region 1307b, and at least one via 1309b. The shift storage circuits in the circuit region 1307b are connected to the electrodes in the metal mesh layer 1303b through the at least one via 1309b.

[0132] refer to Figure 14 as well as Figure 15 . Figure 14 This is a schematic diagram of a device 1400 having an externally stacked structure, illustrated in accordance with some embodiments of this disclosure. Figure 15 This is a schematic diagram of a device 1500 having an externally stacked structure, illustrated according to some embodiments of the present disclosure.

[0133] by Figure 14 For example, a back-side copper layer 1401 is disposed under a substrate 1402. The substrate 1402 includes multiple light-emitting elements. A metal mesh layer 1403 includes multiple transmitting electrodes and multiple receiving electrodes and is disposed on the substrate 1402. A flexible printed circuit (FPC) board 1404 is attached to the substrate 1402. Two circuit regions 1405 and 1406 are disposed on the substrate 1402, wherein circuit region 1405 includes... Figure 1 The shift temporary storage circuit SRX1-SRX2 (or Figure 6 The shift temporary storage circuit SRX1'-SRX2' in, or Figure 11 The shift temporary storage circuits SRX1”-SRX2” in the circuit, and the circuit region 1406 contains Figure 1 The shift temporary storage circuit SRY1-SRY2 (or Figure 6 The shift temporary storage circuit SRY1'-SRY2' in, or Figure 11 The shift buffer circuits SRY1”-SRY2” are included. Circuit regions 1405 and 1406 are connected to multiple signal lines, and these signal lines are connected to the metal mesh layer 1403 via a ramp or other means (e.g., circuit regions 1405 and 1406 are connected to electrodes in the metal mesh layer 1403 via multiple vias). Processing circuit 1407 is disposed on substrate 1402 and performs display functions. Processing circuit 1408 is disposed on flexible printed circuit board 1404. Processing circuit 1408 is connected to circuit regions 1405 and 1406 via other signal lines, and these signal lines transmit... Figure 1 The transmitted signal TX (or Figure 6 The transmitted signal TX', or Figure 11 The transmitted signals TX_X1” and TX_X2”) or received signals Figure 1 The received signal RX (or Figure 6 The received signal RX' in, or Figure 11 The receiving signals RX_Y1” and RX_Y2” are used to perform touch operation and fingerprint recognition operation. Each of the processing circuits 1407 and 1408 is an integrated circuit (IC). In other words, the device 1400 includes two integrated circuits and can perform display function, touch function and fingerprint recognition function.

[0134] by Figure 15 For example, a back-side copper layer 1501 is disposed under a substrate 1502. The substrate 1502 includes multiple light-emitting elements. A metal mesh layer 1503 includes multiple transmitting electrodes and multiple receiving electrodes and is disposed on the substrate 1502. A flexible printed circuit board 1504 is attached to the substrate 1502. Two circuit regions 1505 and 1506 are disposed on the substrate 1502, wherein circuit region 1505 includes... Figure 1 The shift temporary storage circuit SRX1-SRX2 (or Figure 6 The shift temporary storage circuit SRX1'-SRX2' in, or Figure 11 The shift temporary storage circuits (SRX1”-SRX2”) are contained in circuit region 1506. Figure 1 The shift temporary storage circuit SRY1-SRY2 (or Figure 6 The shift temporary storage circuit SRY1'-SRY2' in, or Figure 11 The shift buffer circuits SRY1”-SRY2” are included. Circuit regions 1505 and 1506 are connected to multiple signal lines, which are connected to the metal mesh layer 1503 by means of ramping or other methods (e.g., circuit regions 1505 and 1506 are connected to electrodes in the metal mesh layer 1503 through multiple vias). Processing circuit 1507 is disposed on substrate 1502. Similar to Figure 11 The processing circuits 1407 and 1507 in the middle can perform display functions. Furthermore, the processing circuit 1507 is connected to circuit areas 1505 and 1506 via multiple signal lines, and these signal lines transmit... Figure 1 The transmitted signal TX (or Figure 6 The transmitted signal TX', or Figure 11 The transmitted signals TX_X1” and TX_X2” in the signal, or the received signals Figure 1 The received signal RX (or Figure 6 The received signal RX' in, or Figure 11The receiving signals RX_Y1” and RX_Y2” are used to perform touch and fingerprint recognition functions. The processing circuit 1507 is an integrated circuit that integrates fingerprint, touch and display. In other words, the device 1500 includes an integrated circuit that can perform display, touch and fingerprint recognition functions.

[0135] refer to Figure 16 . Figure 16 This is a schematic diagram of a touch device 1600 with fingerprint recognition function, illustrated in accordance with some embodiments of this disclosure.

[0136] by Figure 16 For example, a touch device 1600 with fingerprint recognition includes multiple sensing areas Aa, switch groups MX1a-MX2a, and shift register circuits SRX1a-SRX2a. Each sensing area Aa includes multiple sensing electrodes 106. Switch groups MX1a-MX2a are coupled to these sensing electrodes 106. For example, each switch in switch groups MX1a-MX2a is coupled to a corresponding sensing electrode 106. Each switch in switch groups MX1a-MX2a transmits a transmission signal TXa to the corresponding sensing electrode 106 and receives a received signal RXa from the corresponding sensing electrode 106. Shift register circuits SRX1a-SRX2a control the switches in switch groups MX1a-MX2a according to clock signals CLK_Xa, reset signals RST_X1a and RST_X2a, and control signals STV_X1a-STV_X2a, respectively. With this configuration, the touch device 1600 with fingerprint recognition has a self-contained structure.

[0137] refer to Figure 17 . Figure 17 This is a schematic diagram of a touch device 1700 with fingerprint recognition function, illustrated in accordance with some embodiments of this disclosure.

[0138] The configuration of the touch device 1700 with fingerprint recognition is similar to that of the touch device 1600 with fingerprint recognition. In some embodiments, the touch device 1700 with fingerprint recognition is a smartwatch. Figure 17For example, a touch device 1700 with fingerprint recognition includes multiple sensing areas Ab, multiple switch groups MXb, and multiple shift register circuits SRXb. Each sensing area Ab includes multiple sensing electrodes 108. The switch groups MXb are coupled to the sensing electrodes 108. Each switch in the switch group MXb transmits a transmission signal TXb to the corresponding sensing electrode 108 and receives a receive signal RXb from the corresponding sensing electrode 108. Each shift register circuit SRXb controls the switches in the corresponding switch group MXb according to a clock signal CLK_Xb, a corresponding reset signal RST_Xb, and a corresponding control signal STV_Xb. With this configuration, the touch device 1700 with fingerprint recognition also has a self-contained structure.

[0139] refer to Figure 18 . Figure 18 This is a schematic diagram illustrating an operation method 1800 according to some embodiments of the present disclosure.

[0140] For ease of understanding, Operating Method 1800 will be paired with Figure 6 This disclosure is intended to describe, but is not limited thereto.

[0141] During operation S1802, the shift temporary storage circuits SRX1'-SRX2' control the switch groups MX1'-MX2' respectively according to the reset signals RST_X1' and RST_X2' and the control signals STV_X1'-STV_X2'.

[0142] During operation S1804, the shift temporary storage circuits SRY1'-SRY2' control the switch group MY1'-MY2' according to the reset signal RST_Y' and the control signals STV_Y1'-STV_Y2.

[0143] Details of operations S1802 and S1804 have been described above. Figure 6 The relevant embodiments are not described in detail here.

[0144] In summary, touch operation and fingerprint recognition operation can be achieved using the same transmission electrode and the same receiving electrode in the sensing area.

[0145] Various functional components and blocks are disclosed herein. For those skilled in the art, functional blocks can be implemented by circuits (whether dedicated circuits or general-purpose circuits operating under the control of one or more processors and coded instructions), which generally include transistors or other circuit elements for controlling the operation of electrical circuits corresponding to the functions and operations described herein. As will be further understood, the specific structure and interconnection of the circuit elements can generally be determined by a compiler, such as a Register Transfer Language (RTL) compiler. Register Transfer Language compilers operate on scripts that are quite similar to assembly language code, compiling the scripts into a form for layout or fabrication of the final circuit. Indeed, Register Transfer Languages ​​are known for their role and use in facilitating the design process of electronic and digital systems.

[0146] Although this disclosure has been described above with reference to embodiments, it is not intended to limit this disclosure. Any person skilled in the art can make various modifications and refinements without departing from the spirit and scope of this disclosure. Therefore, the scope of protection of this disclosure shall be determined by the scope defined in the appended claims.

Claims

1. A touch device with fingerprint recognition function, characterized in that, Include: Multiple sensing areas, including multiple transmitting electrodes and multiple receiving electrodes; Multiple first switch groups are coupled to the transmission electrodes, wherein the first switch groups are used to receive different multiple first signals and transmit the first signals to the transmission electrodes respectively; Multiple first shift register circuits are used to control the first switch groups respectively according to a first clock signal, multiple first reset signals and multiple first control signals, wherein the first reset signals and the first control signals are different from each other; Multiple second switch groups are coupled to the receiving electrodes and used to receive a second signal from the receiving electrodes; as well as Multiple second shift register circuits are configured to be controlled by different second reset signals and to control the second switch groups according to a second clock signal, the second reset signals, and multiple second control signals, wherein the second control signals are different from each other. In one touch operation, the first switch groups are controlled by the first reset signals and the second switch groups are controlled by the second reset signals, and the first clock signal and the second clock signal have a disable level. In one fingerprint recognition operation, the first switch groups are controlled by the first clock signal and the second switch groups are controlled by the second clock signal, and the first reset signal and the second reset signal have a disable level.

2. The touch device with fingerprint recognition function according to claim 1, characterized in that, In connection with the touch operation, one of the first shift storage circuits activates a plurality of switches in one of the first switch groups according to one of the first reset signals.

3. The touch device with fingerprint recognition function according to claim 2, characterized in that, In connection with the touch operation, one of the second shift storage circuits activates a plurality of switches in one of the second switch groups according to one of the second reset signals.

4. The touch device with fingerprint recognition function according to claim 1, characterized in that, When the touch operation is performed at a position and the position is located within one of the sensing areas, one of the sensing areas is determined, wherein one of the first switch groups and one of the second switch groups are selected based on one of the sensing areas.

5. The touch device with fingerprint recognition function according to claim 4, characterized in that, In the fingerprint recognition operation, the selected first switch group sequentially turns on multiple switches in one of the first control signals and the first clock signal.

6. The touch device with fingerprint recognition function according to claim 5, characterized in that, When the selected first switch group turns on some of the switches in the first switch group, for the fingerprint recognition operation, the selected second switch group sequentially turns on multiple switches in the second switch group according to one of the second control signals and the second clock signal.

7. The touch device with fingerprint recognition function according to claim 1, characterized in that, The touch operation and the fingerprint recognition operation are performed simultaneously.

8. The touch device with fingerprint recognition function according to claim 1, characterized in that, The first and second shift registers are connected to a plurality of signal lines, and the signal lines are connected to the transmit and receive electrodes via a ramp-up mechanism.

9. The touch device with fingerprint recognition function according to claim 1, characterized in that, The first shift register circuits and the second shift register circuits are connected to the transmit electrodes and the receive electrodes through multiple vias.

10. The touch device with fingerprint recognition function according to claim 1, characterized in that, The touch device with fingerprint recognition function is a mutual-capacitance type.

11. The touch device with fingerprint recognition function according to claim 1, characterized in that, The touch device with fingerprint recognition function is a self-contained type.

12. A method for operating a touch device with fingerprint recognition function, characterized in that, This operational method includes: Multiple first shift registers control multiple first switch groups based on a first clock signal, multiple first reset signals, and multiple first control signals. These first switch groups are coupled to multiple transmission electrodes in multiple sensing regions to receive and transmit different first signals to the respective transmission electrodes. The first reset signals and the first control signals are different from each other. Multiple second shift registers are controlled by different second reset signals and, based on a second clock signal, the second reset signals, and multiple second control signals, control multiple second switch groups. These second switch groups are coupled to multiple receiving electrodes in the sensing regions to receive a second signal from these receiving electrodes. The second control signals are distinct from each other. In one touch operation, the first switch groups are controlled by the first reset signals and the second switch groups are controlled by the second reset signals, and the first clock signal and the second clock signal have a disable level. In one fingerprint recognition operation, the first switch groups are controlled by the first clock signal and the second switch groups are controlled by the second clock signal, and the first reset signal and the second reset signal have a disable level.

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