Touch determining device and method, and display device

• US 10,037,097 B2
• Filed: 11/08/2016
• Issued: 07/31/2018
• Est. Priority Date: 01/05/2016
• Status: Active Grant

• Current Assignee: BOE Technology Group Co., Ltd., Hefei BOE Optoelectronics Technology Company Limited (BOE Technology Group Co., Ltd.)
• Original Assignee: BOE Technology Group Co., Ltd., Hefei BOE Optoelectronics Technology Company Limited (BOE Technology Group Co., Ltd.)
• Inventors: Hua, Lei, He, Jian, Cai, Site
• Primary Examiner(s): Sasinowski, Andrew
• Application Number:
  US15/521,737
• Publication Number:
  US 20180032186A1
• Time in Patent Office: 630 Days
• CPC Class Codes: G06F 2203/04112 Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/04186 Touch location disambiguation
• CPC Class Codes: G06F 3/044 by capacitive means

Abstract

A touch determining device and a touch determining method for a touch panel are provided. The touch panel includes multiple touch areas arranged in a matrix. The method includes: detecting whether a touch electrode has a touch area with a capacitance variation value larger than or equal to a predetermined value; if such touch areas exist, acquiring a number of the touch areas with a capacitance variation value larger than or equal to a predetermined value; if the number of the touch areas is one, no electrical signal of a touch area is outputted; if the number of the touch areas is multiple, outputting electrical signals of the multiple touch areas; and determining on the output electrical signals to decide whether to generate a touch signal, or not.

Claims

1. A touch determining method for a touch panel, the touch panel comprising a plurality of touch areas arranged in a matrix, the method comprising:

detecting whether a touch electrode has a touch area with a capacitance variation value larger than or equal to a predetermined value;

if touch areas with a capacitance variation value larger than or equal to a predetermined value are detected, acquiring a number of the touch areas;

if the number of the touch areas is one, no electrical signal is outputted;

if the number of the touch areas is multiple, outputting electrical signals of the multiple touch areas; and

determining on the output electrical signals to decide whether to generate a touch signal, or not.

2. The touch determining method of claim 1, further comprising:

determining whether all of the outputted electrical signals are from separate touch areas;

if not all of the outputted electrical signals are from separate touch areas, generating a touch signal; and

if all of the outputted electrical signals are from separate touch areas, not generating a touch signal.

3. The touch determining method according to claim 2, further comprising:

if not all of the outputted electrical signals are from separate touch areas, determining adjacent touch areas from the multiple touch areas, and generating a touch signal based on an electrical signal output from a location of a touch area at a substantial center of the adjacent touch areas.

4. The touch determining method according to claim 2, further comprising:

if the number of the touch areas is one, recording a location of a touch area; and

if the number of the touch areas is multiple, recording locations of separate touch areas.

5. The touch determining method according to claim 2, wherein the touch panel comprising at least one first touch electrode and at least one second touch electrode, and any of the at least one first touch electrode and any of the at least one second touch electrode overlap with each other to form one touch area.

6. The touch determining method according to claim 2, further comprising:

if not all of the outputted electrical signals are from separate touch areas, determining adjacent touch areas from the multiple touch areas, and generating a touch signal based on an electrical signal outputted from a location of a touch area with a largest capacitance variation value of the adjacent touch areas.

7. The touch determining method according to claim 6, further comprising:

if the number of the touch areas is one, recording a location of a touch area; and

if the number of the touch areas is multiple, recording locations of separate touch areas.

8. The touch determining method according claim 1, further comprising:

if the number of the touch areas is one, recording a location of a touch area; and

if the number of the touch areas is multiple, recording locations of separate touch areas.

9. The touch determining method according to claim 1, wherein the touch panel comprising at least one first touch electrode and at least one second touch electrode, and any of the at least one first touch electrode and any of the at least one second touch electrode overlap with each other to form one touch area.