Touch panel and human-computer interaction method based on touch panel

Patent metadata

Field	Value
Publication number	US-12416989-B2
Application number	US-202218246322-A
Country	US
Kind code	B2
Filing date	Apr 28, 2022
Priority date	Apr 28, 2022
Publication date	Sep 16, 2025
Grant date	Sep 16, 2025

Abstract

This application discloses a touch panel and a human-computer interaction method based on a touch panel. The touch panel includes a base substrate, at least one pressure detector and at least one actuator arranged on the base substrate, and a driving circuit. The at least one pressure detector is electrically connected to the driving circuit, and the driving circuit is electrically connected to the at least one actuator.

First claim

We claim:

1. A touch panel, comprising:
a base substrate,
at least one pressure detector and at least one actuator arranged on the base substrate, and
a driving circuit,
wherein the at least one pressure detector is electrically connected to the driving circuit, and the driving circuit is electrically connected to the at least one actuator,
wherein the at least one actuator comprises a plurality of actuators, and the plurality of actuators are arranged in an array comprising at least two rows and at least two columns,
wherein every four actuators that are directly adjacent constitute a sub-array which is a parallelogram, and orthographic projections of the four actuators constituting the sub-array on the base substrate define a sub-region as vertices,
wherein an orthographic projection of each of the at least one pressure detectors on the base substrate is in a corresponding sub-region,
wherein each pressure detector of the at least one pressure detector comprises an input terminal and two output terminals, the driving circuit comprises at least one detection signal output terminal, at least two detection signal receiving terminals and a ground terminal,
wherein the input terminal of each pressure detector is electrically connected to a corresponding detection signal output terminal of the driving circuit, and the two output terminals of each pressure detector are electrically connected to two corresponding detection signal receiving terminals of the driving circuit, respectively,
wherein each pressure detector of the at least one pressure detector comprises a first positive piezoresistor, a second positive piezoresistor, a first negative piezoresistor and a second negative piezoresistor, and when a positive piezoresistor is subjected to pressure, its resistance value increases, when a negative piezoresistor is subjected to pressure, its resistance value decreases,
wherein a first electrode of the first positive piezoresistor is electrically connected to the input terminal of the pressure detector, a second electrode of the first positive piezoresistor is electrically connected to a first electrode of the first negative piezoresistor and a first output terminal of the two output terminals, a first electrode of the second negative piezoresistor is also electrically connected to the input terminal of the pressure detector, a second electrode of the second negative piezoresistor is electrically connected to a first electrode of the second positive piezoresistor and a second output terminal of the two output terminals, a second electrode of the first negative piezoresistor and a second electrode of the second positive piezoresistor are both electrically connected to the ground terminal.

2. The touch panel according to claim 1 , wherein a ratio of a quantity of the at least one actuator and a quantity of the at least one pressure detector is in a range of 1:4 to 2:1.

3. The touch panel according to claim 1 , wherein each sub-region corresponds to one of said at least one pressure detector,
wherein an orthographic projection of the at least one pressure detector on the base substrate is at a geometric center of the corresponding sub-region.

4. The touch panel according to claim 1 , wherein each sub-region corresponds to two pressure detectors,
wherein an arrangement direction of orthographic projections of the two pressure detectors on the base substrate is parallel to a row direction or a column direction of the array of the plurality of actuators.

5. The touch panel according to claim 4 , wherein the sub-region is divided into two regions by its midline, and the orthographic projections of the two pressure detectors on the base substrate are respectively at geometric centers of the two regions.

6. The touch panel according to claim 1 , wherein each sub-region corresponds to four pressure detectors,
wherein the four pressure detectors constitute a parallelogram as vertices,
wherein, extension directions of the two sets of opposite sides of the parallelogram are respectively parallel to the row direction and the column direction of the array of the plurality of actuators.

7. The touch panel according to claim 1 , wherein the at least one pressure detector and the at least one actuator are arranged in a same layer.

8. The touch panel according to claim 1 , wherein an orthographic projection of each pressure detector of the at least one pressure detector on the base substrate at least partially overlaps with an orthographic projection of a corresponding actuator of the at least one actuator on the base substrate.

9. The touch panel according to claim 1 , wherein the at least one pressure detector and the at least one actuator are arranged in different layers.

10. The touch panel according to claim 1 , wherein the input terminal of each pressure detector is electrically connected to a same detection signal output terminal of the driving circuit.

11. The touch panel according to claim 1 , wherein each actuator of the at least one actuator comprises an input terminal and an output terminal, the driving circuit comprises at least one actuation signal output terminal and a ground terminal,
wherein the input terminal of each actuator is electrically connected to a corresponding actuation signal output terminal of the driving circuit, and the output terminal of each actuator is electrically connected to the ground terminal of the driving circuit.

12. The touch panel according to claim 1 , wherein the driving circuit further comprises at least one actuation signal output terminal,
wherein the at least one detection signal output terminal and the at least two detection signal receiving terminals are electrically connected to the at least one pressure detector, and the at least one actuation signal output terminal and the ground terminal are electrically connected to the at least one actuator,
wherein the at least one detection signal output terminal and the at least two detection signal receiving terminals are located at a first edge of the touch panel, and the at least one actuation signal output terminal and the ground terminal are located at a second edge of the touch panel, wherein the first edge is opposite to the second edge.

13. The touch panel according to claim 1 , wherein the touch panel is divided into a touch area and a frame area surrounding the touch area,
wherein the at least one pressure detector and/or the at least one actuator are located in the frame area.

14. The touch panel according to claim 1 , further comprising a touch layer, wherein the touch layer is configured to determine a touch location.

Assignees

• Boe Technology Group Co Ltd

Inventors

• Wang Shuai
• Qi Dexing
• Hua Hui
• Wang Yingzi
• Huang Dongsheng
• Zhou Li
• Xu Xiaoguang

Classifications

• G06F2203/04105

  Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position · CPC title

• G06F3/016

  Input arrangements with force or tactile feedback as computer generated output to the user · CPC title

• G06F3/04142

  the force sensing means being located peripherally, e.g. disposed at the corners or at the side of a touch sensing plate · CPC title

• G06F3/04166

  Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving (Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally G06F3/04184) · CPC title

• G06F3/04144

  using an array of force sensing means (position sensing using the local deformation of sensor cells G06F3/0447) · CPC title