US-12625587-B2 - Touch panel, display module, and display device

Abstract

A touch panel is provided. The touch panel includes a touch electrode layer and a pressure sensing layer. The touch electrode layer includes multiple touch regions. The pressure sensing layer includes multiple sensing assemblies. Positions of the multiple sensing assemblies correspond to positions of the multiple touch regions, respectively. The touch electrode layer is configured to sense multiple touched points. The multiple touched points include at least two actually touched points. The multiple sensing assemblies are configured to sense pressed points. Each of the pressed points is used to determine one touch region where one actually touched point is located. A display module and a display device are further provided.

Inventors

• Peidi Huang
• Wei Fu
• Lidan YE

Assignees

• HKC Corporation Limited

Dates

Publication Date

20260512

Application Date

20240425

Priority Date

20230510

Claims (17)

1. 1 . A touch panel comprising: a touch electrode layer, wherein the touch electrode layer comprises a plurality of touch regions, the touch electrode layer is configured to sense a plurality of touched points, and the plurality of touched points comprise at least two actually touched points; and a pressure sensing layer, wherein the pressure sensing layer comprises a plurality of sensing assemblies, positions of the plurality of sensing assemblies correspond to positions of the plurality of touch regions, respectively, the plurality of sensing assemblies are configured to sense pressed points, and each pressed point of the pressed points is used to determine one touch region where one actually touched point is located, wherein coordinates of the plurality of touch regions are in one-to-one correspondence with coordinates of the plurality of sensing assemblies, and wherein the touch panel further comprises a controller configured to: determine whether each touched point of the plurality of touched points has a corresponding pressed point according to merely a coordinate of each touched point of the plurality of touched points and a coordinate of each pressed point of the pressed points; and for each touched point of the plurality of touched points, determine that the touched point is one actually touched point when the touched point has a corresponding pressed point, and determine that the touched point is one ghost point when the touched point does not have a corresponding pressed point.
2. 2 . The touch panel of claim 1 , wherein each sensing assembly of the plurality of sensing assemblies comprises a flexible element and a conductive element, wherein the conductive element is connected to one side of the flexible element and in conduction connection with the flexible element; and when the flexible element is touched, the flexible element deforms, a contact area between the flexible element and the conductive element increases, and a resistance of the sensing assembly decreases.
3. 3 . The touch panel of claim 2 , wherein the flexible element is made of polydimethylsiloxane, and the conductive element is made of polyaniline.
4. 4 . The touch panel of claim 2 , wherein the flexible element comprises a base and a plurality of protrusions, wherein the base is disposed opposite to and is spaced apart from the conductive element; the plurality of protrusions are connected to one side of the base facing the conductive element and are in contact with the conductive element; and when the base is touched, the base deforms, the plurality of protrusions are moved towards the conductive element and deform, and a contact area between each protrusion of the plurality of protrusions and the conductive element increases.
5. 5 . The touch panel of claim 4 , wherein a cross-sectional area of each protrusion of the plurality of protrusions gradually decreases in a direction from the base to the conductive element.
6. 6 . The touch panel of claim 4 , wherein a height of each protrusion of the plurality of protrusions ranges from 8 um to 30 um, and a diameter of each protrusion of the plurality of protrusions ranges from 10 um to 30 um.
7. 7 . A display module, comprising: a display panel; and a touch panel disposed at a light-exiting side of the display panel, wherein the touch panel comprises: a touch electrode layer, wherein the touch electrode layer comprises a plurality of touch regions, the touch electrode layer is configured to sense a plurality of touched points, and the plurality of touched points comprise at least two actually touched points; and a pressure sensing layer, wherein the pressure sensing layer comprises a plurality of sensing assemblies, positions of the plurality of sensing assemblies correspond to positions of the plurality of touch regions, respectively, the plurality of sensing assemblies are configured to sense pressed points, and each pressed point of the pressed points is used to determine one touch region where one actually touched point is located, wherein coordinates of the plurality of touch regions are in one-to-one correspondence with coordinates of the plurality of sensing assemblies, and wherein the touch panel further comprises a controller configured to: determine whether each touched point of the plurality of touched points has a corresponding pressed point according to merely a coordinate of each touched point of the plurality of touched points and a coordinate of each pressed point of the pressed points; and for each touched point of the plurality of touched points, determine that the touched point is one actually touched point when the touched point has a corresponding pressed point, and determine that the touched point is one ghost point when the touched point does not have a corresponding pressed point.
8. 8 . The display module of claim 7 , wherein each sensing assembly of the plurality of sensing assemblies comprises a flexible element and a conductive element, wherein the conductive element is connected to one side of the flexible element and in conduction connection with the flexible element; and when the flexible element is touched, the flexible element deforms, a contact area between the flexible element and the conductive element increases, and a resistance of the sensing assembly decreases.
9. 9 . The display module of claim 8 , wherein the flexible element is made of polydimethylsiloxane, and the conductive element is made of polyaniline.
10. 10 . The display module of claim 8 , wherein the flexible element comprises a base and a plurality of protrusions, wherein the base is disposed opposite to and is spaced apart from the conductive element; the plurality of protrusions are connected to one side of the base facing the conductive element and are in contact with the conductive element; and when the base is touched, the base deforms, the plurality of protrusions are moved towards the conductive element and deform, and a contact area between each protrusion of the plurality of protrusions and the conductive element increases.
11. 11 . The display module of claim 10 , wherein a cross-sectional area of each protrusion of the plurality of protrusions gradually decreases in a direction from the base to the conductive element.
12. 12 . The display module of claim 10 , wherein a height of each protrusion of the plurality of protrusions ranges from 8 um to 30 um, and a diameter of each protrusion of the plurality of protrusions ranges from 10 um to 30 um.
13. 13 . A display device, comprising: a display module; and a driver electrically coupled to the display module and configured to drive the display module to perform image display; the display module comprising: a display panel; and a touch panel disposed at a light-exiting side of the display panel, wherein the touch panel comprises: a touch electrode layer, wherein the touch electrode layer comprises a plurality of touch regions, the touch electrode layer is configured to sense a plurality of touched points, and the plurality of touched points comprise at least two actually touched points; and a pressure sensing layer, wherein the pressure sensing layer comprises a plurality of sensing assemblies, positions of the plurality of sensing assemblies correspond to positions of the plurality of touch regions, respectively, the plurality of sensing assemblies are configured to sense pressed points, and each pressed point of the pressed points is used to determine one touch region where one actually touched point is located, wherein coordinates of the plurality of touch regions are in one-to-one correspondence with coordinates of the plurality of sensing assemblies, and wherein the touch panel further comprises a controller configured to: determine whether each touched point of the plurality of touched points has a corresponding pressed point according to merely a coordinate of each touched point of the plurality of touched points and a coordinate of each pressed point of the pressed points; and for each touched point of the plurality of touched points, determine that the touched point is one actually touched point when the touched point has a corresponding pressed point, and determine that the touched point is one ghost point when the touched point does not have a corresponding pressed point.
14. 14 . The display device of claim 13 , wherein each sensing assembly of the plurality of sensing assemblies comprises a flexible element and a conductive element, wherein the conductive element is connected to one side of the flexible element and in conduction connection with the flexible element; and when the flexible element is touched, the flexible element deforms, a contact area between the flexible element and the conductive element increases, and a resistance of the sensing assembly decreases.
15. 15 . The display device of claim 14 , wherein the flexible element is made of polydimethylsiloxane, and the conductive element is made of polyaniline.
16. 16 . The display device of claim 14 , wherein the flexible element comprises a base and a plurality of protrusions, wherein the base is disposed opposite to and is spaced apart from the conductive element; the plurality of protrusions are connected to one side of the base facing the conductive element and are in contact with the conductive element; and when the base is touched, the base deforms, the plurality of protrusions are moved towards the conductive element and deform, and a contact area between each protrusion of the plurality of protrusions and the conductive element increases.
17. 17 . The display device of claim 16 , wherein a cross-sectional area of each protrusion of the plurality of protrusions gradually decreases in a direction from the base to the conductive element.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority under 35 U.S.C. § 119 (a) to Chinese Patent Application No. 202310518763.4, filed May 10, 2023, the entire disclosure of which is incorporated herein by reference. TECHNICAL FIELD This disclosure relates to the field of display technology, and in particular, to a touch panel, a display module with the touch panel, and a display device with the display module. BACKGROUND With the touchscreen technology, people can operate electronic devices more easily and conveniently, achieving good man-machine interaction. With the development of touchscreen industry, touch display panels are used in almost all electronic devices such as smart phones, tablet computers, and smart watches. At present, capacitive touch panels are the most common in daily life due to their relatively good light transmittance and definition, and self-capacitive touch panels are especially common in electronic devices. The self-capacitive touch panel includes multiple touch points, and each touch point corresponds to a horizontal coordinate and a vertical coordinate. However, in practical applications, when multi-touch occurs on a touch panel, the touch panel cannot accurately recognize multiple touched points at the same time, resulting in confusion in coordinates of the multiple touched points, leading to “ghost points”. The “ghost points” may significantly affect and interfere with detection of touched positions by the touch panel, leading to misjudgment of actually touched positions, thereby reducing touch effect and user experience. In view of this, how to solve a problem of “ghost points” generated due to confusion in coordinates of touched points when multi-touch occurs on the self-capacitive touch panel in the related art is an urgent problem to-be-solved for those skilled in the art. SUMMARY A touch panel, a display module with the touch panel, and a display device with the display module are provided in the disclosure. A touch panel is provided in the disclosure. The touch panel includes a touch electrode layer. The touch electrode layer includes multiple touch regions. The touch panel further includes a pressure sensing layer. The pressure sensing layer includes multiple sensing assemblies. Positions of the multiple sensing assemblies correspond to positions of the multiple touch regions, respectively. The touch electrode layer is configured to sense multiple touched points. The multiple touched points include at least two actually touched points. The multiple sensing assemblies are configured to sense pressed points. Each of the pressed points is used to determine one touch region where one actually touched point is located. A display module is further provided in the disclosure. The display module includes a display panel and the touch panel. The touch panel is disposed at a light-exiting side of the display panel. A display device is further provided in the disclosure. The display device includes a driver and the display module. The driver is electrically connected to the display module and configured to control the display module to perform image display. BRIEF DESCRIPTION OF THE DRAWINGS In order to describe technical solutions in embodiments of the disclosure more clearly, the following will give a brief introduction to accompanying drawings required for describing embodiments. Apparently, the accompanying drawings hereinafter described illustrate some embodiments of the disclosure. Based on these drawings, those of ordinary skills in the art can also obtain other drawings without creative effort. FIG. 1 is a schematic structural view of layers of a touch panel provided in embodiments of the disclosure. FIG. 2 is a schematic top structural view of a touch electrode layer of the touch panel in FIG. 1. FIG. 3 is a schematic structural view of a touch region of the touch panel in FIG. 2. FIG. 4 is a schematic top structural view of a pressure sensing layer of the touch panel in FIG. 1. FIG. 5 is a schematic structural view of a sensing assembly in a non-pressed state provided in embodiments of the disclosure. FIG. 6 is a schematic structural view of a sensing assembly in a pressed state provided in embodiments of the disclosure. FIG. 7 is a schematic structural view of a coordinate detection unit and a touch electrode layer provided in embodiments of the disclosure. FIG. 8 is a schematic structural view of a pressure detection unit and a pressure sensing layer provided in embodiments of the disclosure. FIG. 9 is a schematic structural view of layers of a display module provided in embodiments of the disclosure. FIG. 10 is a schematic structural view of a display device provided in embodiments of the disclosure. FIG. 11 is a schematic flow chart of a touch detection method provided in embodiments of the disclosure. Illustration of reference signs in the accompanying drawings 1—touch panel; 10—touch electrode layer; 10a—touch region; 11—touch point; 20—pressure