Sensor device, driving method thereof, and display device

Abstract

Embodiments of the present application disclose a sensor device, a driving method thereof, and a display device. The sensor device includes a substrate and a plurality of sensor pixels arrayed on the substrate. Each sensor pixel includes a signal transmitting circuit and a signal receiving circuit. A plurality of n sensor pixels constitute a pixel group, where n is a positive integer greater than or equal to 2. The sensor pixels in each pixel group are electrically connected to the same signal receiving circuit. Embodiments of the present application can save layout space for receiving circuits in the sensor device, simplify the circuitry, reduce the number of receiving circuits, and improve the resolution of the sensor pixels in the sensor device.

Description

Technical Field

[0001] The present application relates to the field of sensors, and in particular to a sensor device, a driving method thereof, and a display device. Background Art

[0002] Sensor devices have been widely used. For example, ultrasonic sensor devices are used for fingerprint recognition. Currently, the signal sending unit and the signal receiving unit in the sensor device are set in a 1:1 ratio, with one signal sending unit corresponding to one signal receiving unit. However, the circuit design in this ratio of one signal sending unit to one signal receiving unit limits the size of the sensor pixel unit, and the resolution of the sensor pixel is difficult to meet the demand for higher resolution. Summary of the Invention

[0003] The embodiments of the present application provide a sensor device and a driving method thereof, and a display device, which can solve the problem that the resolution of sensor pixels in existing sensor devices is difficult to improve.

[0004] An embodiment of the present application provides a sensor device, comprising a substrate and a plurality of sensor pixels arrayed on the substrate, each of the sensor pixels comprising a signal transmitting circuit and a signal receiving circuit;

[0005] n sensor pixels constitute a pixel group, n represents the number of signal transmission circuits in the pixel group, and n is a positive integer greater than or equal to 2;

[0006] The sensor pixels in each pixel group are electrically connected to the same signal receiving circuit.

[0007] Optionally, in some embodiments of the present application, the multiple signal transmitting circuits in each pixel group are symmetrically distributed around the corresponding signal receiving circuit.

[0008] Optionally, in some embodiments of the present application, in the pixel group, n / 2 sensor pixels are arranged along the first direction and distributed on one side of the signal receiving circuit;

[0009] Another n / 2 sensor pixels are arranged along the first direction and distributed on the other side of the signal receiving circuit.

[0010] Optionally, in some embodiments of the present application, n=4, and the signal receiving circuit is arranged between the four signal transmitting circuits.

[0011] Optionally, in some embodiments of the present application, a transducer unit layer is further included;

[0012] The transducer unit layer includes a first transducer unit connected to the signal receiving circuit, and a second transducer unit connected to the signal transmitting circuit;

[0013] The first transducer unit is used to convert the first electrical signal emitted by the signal transmitting circuit into a first signal different from the electrical signal;

[0014] The second transducer unit is used to convert a received second signal different from an electrical signal into a second electrical signal, and transmit the second electrical signal to the signal receiving circuit. The first signal and the second signal are signals of the same type.

[0015] Optionally, in some embodiments of the present application, the first transducer unit and the second transducer unit are the same transducer unit.

[0016] Optionally, in some embodiments of the present application, the transducing unit layer is arranged on a side of the sensor pixel away from the substrate.

[0017] Optionally, in some embodiments of the present application, the sensor device includes any one of an ultrasonic sensor, an optical sensor, and a piezoelectric sensor.

[0018] An embodiment of the present application further provides a display device, comprising any of the above-mentioned sensor devices and a display panel.

[0019] An embodiment of the present application further provides a driving method for a sensor device. In the sensor device described above, a driving cycle of each pixel group includes n sub-driving cycles. In an m-th sub-driving cycle, the m-th sensor pixel performs signal transmission and signal reception, where m is a positive integer less than or equal to n.

[0020] Each of the sub-driving cycles includes a signal transmission time period and a signal reception time period;

[0021] In the signal transmission time period of the mth sub-driving cycle, the signal transmission circuit of the mth sensor pixel in the pixel group transmits the first electrical signal;

[0022] During the receiving time period of the mth sub-driving cycle, the signal receiving circuit in the pixel group receives the second electrical signal.

[0023] Optionally, in some embodiments of the present application, the transmission time period and the reception time period at least partially overlap.

[0024] Optionally, in some embodiments of the present application, n=4, the pixel group includes a first sensor pixel, a second sensor pixel, a third sensor pixel and a fourth sensor pixel, and the driving cycle of each of the pixel groups includes a first sub-driving cycle corresponding to the first sensor pixel, a second sub-driving cycle corresponding to the second sensor pixel, a third sub-driving cycle corresponding to the third sensor pixel, and a fourth sub-driving cycle corresponding to the fourth sensor pixel.

[0025] In the embodiment of the present application, the sensor pixels in each pixel group share the same signal receiving circuit, which can save layout space of the signal receiving circuit in the sensor device, simplify the circuit, and reduce the number of receiving circuits. At the same time, it can improve the resolution (pixel density, PPI) of the sensor pixels in the sensor device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 is a schematic top view of a sensor device provided in one embodiment of the present application;

[0028] Figure 2 This is a circuit diagram of a sensor device provided by an embodiment of the present application;

[0029] Figure 3 This is a first cross-sectional schematic diagram of a sensor device provided by an embodiment of the present application;

[0030] Figure 4 This is a second cross-sectional schematic diagram of a sensor device provided in one embodiment of the present application;

[0031] Figure 5 is a schematic diagram of a display device provided by an embodiment of the present application;

[0032] Figure 6 This is a first timing diagram of a driving method for a sensor device provided by an embodiment of the present application;

[0033] Figure 7 This is a second timing diagram of a driving method for a sensor device provided in one embodiment of the present application;

[0034] Figure 8 This is another schematic top view of a sensor device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise specified, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; and "inside" and "outside" refer to the outline of the device.

[0036] An embodiment of the present application provides a sensor device, comprising a substrate and a plurality of sensor pixels arrayed on the substrate, each sensor pixel comprising a signal transmitting circuit and a signal receiving circuit; n sensor pixels constitute a pixel group, where n is a positive integer greater than or equal to 2; wherein the sensor pixels in each pixel group are electrically connected to the same signal receiving circuit.

[0037] The embodiments of the present application provide a sensor device and a driving method thereof, and a display device. These are described in detail below. It should be noted that the order in which the following embodiments are described does not limit the preferred order of the embodiments.

[0038] Example 1

[0039] See also Figure 1 、 Figure 2 , Figure 1 A schematic top view of a sensor device 100 provided in an embodiment of the present application is shown in FIG. Figure 2 This is a circuit diagram of a sensor device 100 provided in an embodiment of the present application.

[0040] An embodiment of the present application provides a sensor device 100, which includes a substrate 11 and a plurality of sensor pixels 30 arrayed on the substrate 11. Each sensor pixel 30 includes a signal transmitting circuit Tx and a signal receiving circuit Rx1234. n sensor pixels 30 constitute a pixel group 20, where n represents the number of signal transmitting circuits Tx in the pixel group and is a positive integer greater than or equal to 2. The sensor pixels 30 in each pixel group 20 are electrically connected to the same signal receiving circuit Rx1234.

[0041] Specifically, the sensor device 100 includes a substrate 11 and a sensor pixel layer 12 arranged on the substrate 11. The sensor pixel layer 12 includes a plurality of sensor pixels 30 arranged in an array. Each sensor pixel 30 includes a signal transmitting circuit Tx. Each sensor pixel 30 corresponds to a signal receiving circuit Rx1234. The sensor pixels 30 in the same pixel group 20 correspond to the same signal receiving circuit Rx1234.

[0042] Specifically, n sensor pixels 30 constitute a pixel group 20 , where n represents the number of signal transmitting circuits Tx in the pixel group 20 . Each sensor pixel 30 includes a signal transmitting circuit Tx and includes or corresponds to a signal receiving circuit Rx1234 .

[0043] It should be noted that the various schematic diagrams and Rx1234 merely illustrate the signal receiving circuits shared by the pixel group 20 and do not limit the pixel group 20 to having only four transmitting circuits Tx. In practice, the number of signal transmitting circuits Tx in the pixel group 20 that share the signal receiving circuit Rx1234 depends on the value of n. Specifically, the signal transmitting circuit Tx is a circuit that transmits and excites signals, while the signal receiving circuit Rx1234 is a circuit that transmits and receives signals. The signal transmitting circuit Tx and the signal receiving circuit Rx1234 can include thin-film transistors (TFTs), metal-oxide semiconductor field-effect transistors (MOSFETs), and the like. Figure 2 The example in the figure shows that the signal transmitting circuit Tx is composed of a TFT. Figure 2 The example in FIG. 1 shows that the signal receiving circuit Rx1234 is composed of two TFTs.

[0044] Specifically, the substrate may be a glass substrate or a silicon-based substrate, which is not limited here.

[0045] Specifically, in the sensor device 100, the sensor pixels 30 in each pixel group 20 are electrically connected to the same signal receiving circuit Rx1234. That is, each pixel group 20 shares the same signal receiving circuit Rx1234. This can save layout space for the receiving circuit Rx1234 in the sensor device 100, simplify the circuit, and improve the resolution (pixel density) of the sensor pixels in the sensor device 100.

[0046] In some embodiments, the plurality of signal transmitting circuits Tx in each pixel group 20 are symmetrically distributed around the corresponding signal receiving circuit Rx1234 .

[0047] Specifically, the n signal transmitting circuits Tx in each pixel group 20 are symmetrically distributed around the corresponding signal receiving circuit Rx1234, so that each signal transmitting circuit Tx in the pixel group 20 can be connected to the signal receiving circuit Rx1234 through the shortest routing line, which can save the layout space of the receiving circuit Rx1234 in the sensor device 100, simplify the circuit, and improve the sensor pixel resolution (pixel density) in the sensor device 100.

[0048] In some embodiments, n / 2 sensor pixels 30 are arranged along the first direction and distributed on one side of the signal receiving circuit Rx1234 ; another n / 2 sensor pixels 30 are arranged along the first direction and distributed on the other side of the signal receiving circuit Rx1234 .

[0049] Specifically, in a pixel group 20, n / 2 sensor pixels 30 are arranged along a first direction and distributed on one side of the signal receiving circuit Rx1234, while another n / 2 sensor pixels 30 are arranged along the first direction and distributed on the other side of the signal receiving circuit Rx1234. That is, in a pixel group 20, half of the sensor pixels 30 are arranged along the first direction and distributed on one side of the signal receiving circuit Rx1234, while the other half are arranged along the first direction and distributed on the other side of the signal receiving circuit Rx1234. For example, in a pixel group 20, half of the sensor pixels 30 are arranged along the row or column direction and distributed on one side of the signal receiving circuit Rx1234, while the other half are arranged along the row or column direction and distributed on the other side of the signal receiving circuit Rx1234. This arrangement optimizes the arrangement of the sensor pixels 30 in the pixel group 20, facilitating row or column sequential driving.

[0050] In the embodiment of the present application, each pixel group 20 shares the same signal receiving circuit Rx1234, which can save layout space of the signal receiving circuit Rx1234 in the sensor device 100, simplify the circuit, and reduce the number of signal receiving circuits Rx1234. At the same time, the resolution (pixel density, PPI) Rx1234 of the sensor pixels in the sensor device 100 can be improved.

[0051] Example 2

[0052] This embodiment is the same as or similar to the first embodiment, except that n=4.

[0053] In some embodiments, n=4, and the signal receiving circuit Rx1234 is disposed between the four signal transmitting circuits Tx.

[0054] Specifically, such as Figure 1 、 Figure 2As shown, n=4, one pixel group 20 includes four sensor pixels 30 and shares a common signal receiving circuit Rx1234 , which is disposed between four signal transmitting circuits Tx.

[0055] Specifically, in a pixel group 20, two signal transmitting circuits Tx are arranged along a first direction on one side of a signal receiving circuit Rx1234, and another two signal transmitting circuits Tx are arranged along the first direction on the other side of the signal receiving circuit Rx1234. The first direction can be a row direction or a column direction. With this arrangement, the four sensor pixels 30 in each pixel group 20 share the same signal receiving circuit Rx1234, which saves layout space for the signal receiving circuit Rx1234 in the sensor device 100, simplifies the circuit, and improves the resolution (pixel density) of the sensor pixels in the sensor device 100.

[0056] Example 3:

[0057] This embodiment is the same as or similar to the above embodiment, and the difference is that the structure or function of the sensor device 100 is further described.

[0058] See also Figure 3 、 Figure 4 , Figure 3 This is a first cross-sectional schematic diagram of the sensor device 100 provided in an embodiment of the present application. Figure 4 This is a second cross-sectional schematic diagram of the sensor device 100 provided in an embodiment of the present application.

[0059] In some embodiments, the sensor device 100 also includes a transducer unit layer 40, which includes a first transducer unit 42 connected to the signal receiving circuit Rx1234, and a second transducer unit 41 connected to the signal transmitting circuit Tx; the second transducer unit 41 is used to convert the first electrical signal emitted by the signal transmitting circuit into a first signal different from the electrical signal; the first transducer unit 42 is used to convert the received second signal different from the electrical signal into a second electrical signal, and transmit the second electrical signal to the signal receiving circuit, and the first signal and the second signal are signals of the same type.

[0060] Specifically, in some embodiments, Figure 3 As shown, Figure 3 It is illustrated that the first transducer unit 42 and the second transducer unit 41 are different transducer units, and the first transducer unit 42 and the second transducer unit 41 are independent and different transducer units.

[0061] In some embodiments, the first transducer unit 42 and the second transducer unit 41 are the same transducer unit.

[0062] Specifically, in some embodiments, Figure 4As shown, Figure 4 The first transducer unit 42 and the second transducer unit 41 are shown as the same transducer unit. The first transducer unit 42 and the second transducer unit 41 are the same transducer unit, and through time-division multiplexing, the first transducer unit 42 and the second transducer unit 41 perform their functions in different time periods. For example, in the first time period, the same transducer unit performs the functions of the second transducer unit 41, and in the second time period, the same transducer unit performs the functions of the first transducer unit 42. In some embodiments, the transducer unit layer 40 is disposed on the side of the sensor pixel 30 away from the substrate 11.

[0063] Specifically, the signal transmitting circuit Tx and the signal receiving circuit Rx1234 are firstly provided on the substrate 11 , and then the transducer unit layer 40 is provided on a side of the signal transmitting circuit Tx and the signal receiving circuit Rx1234 away from the substrate 11 .

[0064] In some embodiments, the sensor device 100 includes any one of an ultrasonic sensor, an optical sensor, and a piezoelectric sensor.

[0065] Specifically, when the sensor device 100 is an ultrasonic sensor, the first transducer unit 42 and the second transducer unit 41 correspond to transducer units of the ultrasonic sensor.

[0066] Specifically, when the sensor device 100 is an optical sensor, the first transducer unit 42 and the second transducer unit 41 correspond to transducer units of the optical sensor.

[0067] Specifically, when the sensor device 100 is a piezoelectric sensor, the first transducer unit 42 and the second transducer unit 41 correspond to the transducer units of the piezoelectric sensor. Specifically, when the first transducer unit 42 and the second transducer unit 41 are ultrasonic sensors, the first transducer unit 42 can convert the first electrical signal emitted by the signal transmitting circuit Tx into a first signal different from the electrical signal, and the second transducer unit 41 can convert the received second signal different from the electrical signal into a second electrical signal and transmit the second electrical signal to the signal receiving circuit Rx1234. In this case, the first signal and the second signal are ultrasonic signals. For example, if the sensor device 100 is used for fingerprint recognition, the first signal is the ultrasonic signal emitted to the surface of the finger, and the second signal is the ultrasonic signal reflected back by the finger.

[0068] Specifically, when the first transducer unit 42 and the second transducer unit 41 are optical sensors, the first transducer unit 42 can convert the first electrical signal emitted by the signal transmitting circuit Tx into a first signal different from the electrical signal, and the second transducer unit 41 can convert the received second signal different from the electrical signal into a second electrical signal, and transmit the second electrical signal to the signal receiving circuit Rx1234. At this time, the first signal and the second signal are optical signals. For example, if the sensor device 100 is used for fingerprint recognition, the first signal is the optical signal emitted to the surface of the finger, and the second signal is the optical signal reflected back by the finger.

[0069] Example 4:

[0070] An embodiment of the present application further provides a display device 1000 , which includes any sensor device 100 described above and a display panel 200 .

[0071] For details, please refer to Figure 5 , Figure 5 This is a schematic diagram of a display device 1000 provided in an embodiment of the present application. The display device 1000 includes a sensor device 100 and a display panel 200. The sensor device 100 can be disposed on one side of the display panel 200, which is not limited here.

[0072] Specifically, in some embodiments, the display panel 200 can display images, and the sensor device 100 can perform fingerprint recognition. In this way, the display device 1000 can perform fingerprint recognition on a part or the entire surface.

[0073] Example 5

[0074] The embodiment of the present application further provides a driving method of the sensor device 100 , which can be applied to any of the sensor devices 100 described above.

[0075] See also Figure 6 、 Figure 7 , Figure 6 This is a first timing diagram of the driving method of the sensor device 100 provided in this embodiment, Figure 7 This is a second timing diagram of the driving method of the sensor device 100 provided in this embodiment.

[0076] In some embodiments, a driving method of a sensor device 100 is provided. In any of the above-mentioned sensor devices 100, a driving cycle TT of each pixel group 20 includes n sub-driving cycles T. In the m-th sub-driving cycle T, the m-th sensor pixel 30 performs signal transmission and signal reception, where m is a positive integer less than or equal to n. Each sub-driving cycle T includes a signal transmission time period t1 and a signal reception time period t2. In the signal transmission time period t1 of the m-th sub-driving cycle Tm, the signal transmission circuit Tx of the m-th sensor pixel 30 in the pixel group transmits a first electrical signal. In the reception time period t2 of the m-th sub-driving cycle Tm, the signal receiving circuit Rx1234 in the pixel group 20 receives a second electrical signal.

[0077] In some embodiments, the transmission time period t1 and the reception time period t2 at least partially overlap. Figure 6 The figure shows that the transmitting time period t1 and the receiving time period t2 partially overlap. This timing is suitable for the sensor device 100 in which there is a certain time difference between the transmission of the first electrical signal and the reception of the second electrical signal. For example, there is a time difference t3 between the transmission of the first electrical signal and the reception of the second electrical signal. The time difference t3 is generated, for example, due to the time it takes for the first electrical signal and the second electrical signal to propagate in the medium.

[0078] In some embodiments, the transmission time period t1 and the reception time period t2 at least partially overlap. Figure 7 The figure shows that the transmission time period t1 and the reception time period t2 completely overlap. This timing is suitable for the sensor device 100 in which the time difference t3 between the transmission of the first electrical signal and the reception of the second electrical signal is much smaller than the signal transmission time period t1 and the signal reception time period t2. For example, the first electrical signal and the second electrical signal propagate very quickly in the medium or the signal transmission time period t1 and the signal reception time period t2 have sufficient time.

[0079] In the embodiment of the present application, an n:1 ratio of the signal transmitting circuit Tx and the signal receiving circuit Rx1234 is adopted, and intermittent transmission and reception reading are performed to simplify the circuit and improve the resolution (PPI, pixel density) of the sensor pixels. The intermittent transmission and reception reading method can avoid cross-talk signal interference (signal crosstalk) and complete high-speed signal reading / transmission.

[0080] Example 6

[0081] This embodiment is the same as or similar to the fifth embodiment, except that n=4.

[0082] In some embodiments, n=4, the pixel group 20 includes a first sensor pixel 31, a second sensor pixel 32, a third sensor pixel 33, and a fourth sensor pixel 34, and the driving period of each pixel group 20 includes a first sub-driving period T1 corresponding to the first sensor pixel 31, a second sub-driving period T2 corresponding to the second sensor pixel 32, a third sub-driving period T3 corresponding to the third sensor pixel 33, and a fourth sub-driving period T4 corresponding to the fourth sensor pixel 34.

[0083] For details, please refer to Figure 1 、 Figure 2 、 Figure 6 、 Figure 7 、 Figure 8 , Figure 8 This is another schematic top view of a sensor device provided by an embodiment of the present application. A first sensor pixel 31 includes a first signal transmitting circuit Tx1 and a shared signal receiving circuit Rx1234. A second sensor pixel 32 includes a second signal transmitting circuit Tx2 and a shared signal receiving circuit Rx1234. A third sensor pixel 33 includes a third signal transmitting circuit Tx3 and a shared signal receiving circuit Rx1234. A fourth sensor pixel 34 includes a fourth signal transmitting circuit Tx4 and a shared signal receiving circuit Rx1234.

[0084] Specifically, the driving cycle TT of each pixel group 20 includes four sub-driving cycles T. In the m-th sub-driving cycle T, the m-th sensor pixel 30 performs signal transmission and signal reception operations, where m is a positive integer less than or equal to n, and m=1, 2, 3, and 4. The four sub-driving cycles T are the first sub-driving cycle T1, the second sub-driving cycle T2, the third sub-driving cycle T3, and the fourth sub-driving cycle T4, respectively; the first sub-driving cycle T1, the second sub-driving cycle T2, the third sub-driving cycle T3, and the fourth sub-driving cycle T4 respectively include a signal transmission time period t1 and a signal reception time period t2; in the signal transmission time period t1 of the m-th sub-driving cycle Tm, the signal transmission circuit Tx of the m-th sensor pixel 30 in the pixel group transmits a first electrical signal; in the reception time period t2 of the m-th sub-driving cycle Tm, the signal receiving circuit Rx1234 in the pixel group 20 receives a second electrical signal.

[0085] Specifically, in the signal transmission time period t1 of the first sub-driving cycle T1, the signal transmission circuit Tx1 corresponding to the first sensor pixel 31 sends a first electrical signal; in the signal receiving time period t2 of the first sub-driving cycle T1, the signal receiving circuit Rx1234 in the pixel group 20 receives a second electrical signal.

[0086] Specifically, in the signal transmission time period t1 of the second sub-driving cycle T2, the signal transmission circuit Tx2 corresponding to the second sensor pixel 32 sends a first electrical signal; in the signal receiving time period t2 of the second sub-driving cycle T2, the signal receiving circuit Rx1234 in the pixel group 20 receives the second electrical signal.

[0087] Specifically, in the signal transmission time period t1 of the third sub-driving cycle T3, the signal transmission circuit Tx3 corresponding to the third sensor pixel 33 sends a first electrical signal; in the signal receiving time period t2 of the third sub-driving cycle T3, the signal receiving circuit Rx1234 in the pixel group 20 receives a second electrical signal.

[0088] Specifically, in the signal transmission time period t1 in the fourth sub-driving cycle T4, the signal transmission circuit Tx4 corresponding to the fourth sensor pixel 34 sends a first electrical signal; in the signal receiving time period t2 in the fourth sub-driving cycle T4, the signal receiving circuit Rx1234 in the pixel group 20 receives a second electrical signal.

[0089] In the embodiment of the present application, a 4:1 ratio of the signal transmitting circuit Tx and the signal receiving circuit Rx1234 is adopted, and the transmission and reception reading are intermittent, which is combined to simplify the circuit, improve the resolution (PPI, pixel density) of the sensor pixels, and complete high-speed signal reading / transmission while avoiding cross-talk signal interference (signal crosstalk).

[0090] The above is a detailed introduction to a sensor device and its driving method, and a display device provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for those skilled in the art, based on the ideas of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A sensor device, characterized in that: The sensor comprises a substrate and a plurality of sensor pixels arranged in an array on the substrate, each of the sensor pixels comprising a signal transmitting circuit and a signal receiving circuit, the signal transmitting circuit being configured to transmit a first electrical signal, and the signal receiving circuit being configured to receive a second electrical signal; n sensor pixels constitute a pixel group, where n represents the number of signal transmitting circuits in the pixel group, and n is a positive integer greater than or equal to 2; wherein, in each pixel group, the n signal transmitting circuits share the same signal receiving circuit; The driving cycle of each pixel group includes n sub-driving cycles, each sub-driving cycle includes a signal transmission time period and a signal reception time period, the m-th sub-driving cycle is the sub-driving cycle of the m-th sensor pixel, and m is a positive integer less than or equal to n; In the signal transmission time period of the mth sub-driving cycle, the signal transmission circuit of the mth sensor pixel in the pixel group transmits the first electrical signal; During the receiving time period of the mth sub-driving cycle, the signal receiving circuit in the pixel group receives the second electrical signal.

2. The sensor device according to claim 1, wherein The plurality of signal transmitting circuits in each pixel group are symmetrically distributed around the corresponding signal receiving circuit.

3. The sensor device according to claim 1 or 2, characterized in that In the pixel group, n / 2 sensor pixels are arranged along a first direction and distributed on one side of the signal receiving circuit; Another n / 2 sensor pixels are arranged along the first direction and distributed on the other side of the signal receiving circuit.

4. The sensor device according to claim 3, wherein n=4, the signal receiving circuit is arranged between the four signal transmitting circuits.

5. The sensor device according to claim 1, wherein Also included is a transducer unit layer; The transducer unit layer includes a first transducer unit connected to the signal receiving circuit, and a second transducer unit connected to the signal transmitting circuit; The second transducer unit is used to convert the first electrical signal emitted by the signal transmitting circuit into a first signal different from the electrical signal; The first transducer unit is used to convert a received second signal different from an electrical signal into a second electrical signal, and transmit the second electrical signal to the signal receiving circuit. The first signal and the second signal are signals of the same type.

6. The sensor device according to claim 5, wherein The first transducer unit and the second transducer unit are the same transducer unit.

7. The sensor device according to claim 5 or 6, characterized in that The transducing unit layer is arranged on a side of the sensor pixel away from the substrate.

8. The sensor device according to claim 5, wherein The sensor device includes any one of an ultrasonic sensor, an optical sensor, and a piezoelectric sensor.

9. A display device, characterized in that: The invention comprises the sensor device according to any one of claims 1 to 8 and a display panel.

10. A driving method of the sensor device according to any one of claims 1 to 8, characterized in that: The driving cycle of each pixel group includes n sub-driving cycles, and in the m-th sub-driving cycle, the m-th sensor pixel performs signal transmission and signal reception, where m is a positive integer less than or equal to n; Each of the sub-driving cycles includes a signal transmission time period and a signal reception time period; In the signal transmission time period of the mth sub-driving cycle, the signal transmission circuit of the mth sensor pixel in the pixel group transmits the first electrical signal; During the receiving time period of the mth sub-driving cycle, the signal receiving circuit in the pixel group receives the second electrical signal.

11. The driving method of the sensor device according to claim 10, wherein: The transmission time period and the reception time period at least partially overlap.

12. The driving method of the sensor device according to claim 10, wherein: n=4, the pixel group includes a first sensor pixel, a second sensor pixel, a third sensor pixel, and a fourth sensor pixel, and the driving period of each pixel group includes a first sub-driving period corresponding to the first sensor pixel, a second sub-driving period corresponding to the second sensor pixel, a third sub-driving period corresponding to the third sensor pixel, and a fourth sub-driving period corresponding to the fourth sensor pixel.

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