Touch control display panel and touch control method thereof, and touch control display device

Patent metadata

Field	Value
Publication number	US-9886121-B2
Application number	US-201514719240-A
Country	US
Kind code	B2
Filing date	May 21, 2015
Priority date	Oct 29, 2014
Publication date	Feb 6, 2018
Grant date	Feb 6, 2018

Abstract

A touch control display panel is disclosed. The touch control display panel includes a display area and a non-display area surrounding the display area. The panel also includes a preliminary touch system having a plurality of preliminary touch electrodes located in at least either of a part of the display area and the non-display area, the preliminary touch system is configured to detect whether there is a touch in at least either of the part of the display area and the non-display area of the touch control display panel. The panel also includes a master touch system having a plurality of master touch electrodes located in the display area. In addition, the master touch electrodes are configured to detect whether there is a touch in the display area.

First claim

What is claimed is:

1. A touch control display panel, comprising:
a display area including a central area and a peripheral area surrounding the central area;
a non-display area surrounding the display area;
a preliminary touch system comprising a plurality of preliminary touch electrodes located in at least either of the peripheral area of the display area and the non-display area, configured to detect whether there is a touch in at least either of the peripheral area of the display area and the non-display area; and
a master touch system comprising a plurality of master touch electrodes located in the display area, wherein the master touch electrodes are configured to detect whether there is a touch in the display area, wherein when a preliminary touch electrode is located in the peripheral area of the display area, the preliminary touch electrode is electrically insulated from the plurality of master touch electrodes.

2. The touch control display panel of claim 1 , wherein the preliminary touch system is configured to transmit a trigger signal which causes the master touch system to start detection, and to transmit a stop signal which causes the master touch system to stop detection.

3. The touch control display panel of claim 2 , wherein:
when the touch control display panel is started, the preliminary touch electrodes start detection;
if any one of the preliminary touch electrodes detects a start touch, the preliminary touch system transmits a trigger signal to the master touch system;
if any one of the preliminary touch electrodes detects a stop touch, the preliminary touch system transmits a stop signal to the master touch system;
the master touch electrodes start detection in response to the trigger signal transmitted by the preliminary touch system;
if any one of the master touch electrodes detects a touch, a location of the touch is determined; and
the detecting master touch electrodes stop detection in response to the stop signal transmitted by the preliminary touch system.

4. The touch control display panel of claim 1 wherein:
the preliminary touch system comprises at least two preliminary touch electrodes located on each of upper, lower, left and right sides of the non-display area, and the at least two preliminary touch electrodes on each of the sides are parallel to and insulated from the corresponding sides; and
the preliminary touch electrodes are self-capacitive electrodes.

5. The touch control display panel of claim 1 wherein:
the preliminary touch system comprises at least two looped preliminary touch electrodes, located in the non-display area and surrounding the display area; and
the preliminary touch electrodes are self-capacitive electrodes.

6. The touch control display panel of claim 1 wherein:
the preliminary touch system comprises at least two preliminary touch electrodes located on each of upper, lower, left and right sides of the peripheral area of the display area, and the at least two preliminary touch electrodes on each of the sides are parallel to and insulated from the corresponding sides; and
the preliminary touch electrodes are self-capacitive electrodes.

7. The touch control display panel of claim 1 wherein
the preliminary touch system comprises at least two looped preliminary touch electrodes located in the peripheral area of the display area and surrounding the central area of the display area; and
the preliminary touch electrodes are self-capacitive electrodes.

8. The touch control display panel of claim 1 wherein
the preliminary touch system comprises preliminary touch electrodes in at least two columns of master touch electrodes located on each of upper, lower, left and right sides of the peripheral area of the display area and parallel to the corresponding sides; and
before the master touch system is started, the preliminary touch electrodes are self-capacitive electrodes.

9. The touch control display panel of claim 1 wherein
the preliminary touch electrodes comprise self-capacitive first preliminary touch electrodes and second preliminary touch electrodes, and the preliminary touch system comprises:

at least one first preliminary touch electrode located on each of upper, lower, left and right sides of the non-display area and parallel to the corresponding sides; or
at least one looped first preliminary touch electrode located in the non-display area and surrounding the display area, and at least one second preliminary touch electrode located on each of upper, lower, left and right sides of the peripheral area of the display area and parallel to the corresponding sides; or
at least one looped second preliminary touch electrode located in the peripheral area of the display area and surrounding the central area of the display area; or
a plurality of second preliminary touch electrodes in at least one columns of master touch electrodes located on each of upper, lower, left and right sides of the peripheral area of the display area and parallel to the corresponding sides, and before the master touch system is started, the second preliminary touch electrodes are self-capacitive electrodes.

10. A touch control method of a touch control display panel, the touch control display panel comprising:
a display area including a central area and a peripheral area surrounding the central area;
a non-display area surrounding the display area;
a preliminary touch system comprising a plurality of preliminary touch electrodes located in at least either of the peripheral area of the display area and the non-display area, configured to detect whether there is a touch in at least either of the peripheral area of the display area and the non-display area; and
a master touch system comprising a plurality of master touch electrodes located in the display area, wherein the master touch electrodes are configured to detect whether there is a touch in the display area, wherein when a preliminary touch electrode is located in the peripheral area of the display area, the preliminary touch electrode is electrically insulated from the plurality of master touch electrodes,
the touch control method comprising:
when the touch control display panel is started, starting detection by the preliminary touch system;
if the preliminary touch system detects a start touch, transmitting, by the preliminary touch system, a trigger signal to the master touch system;
starting detection by the master touch system in response to the trigger signal; and if the master touch system detects a touch in the display area, determining by the master touch system a location of the touch.

11. The touch control method of claim 10 , further comprising starting detection by the preliminary touch system from the time the touch control display panel is started until the touch control display panel is powered off.

12. The touch control method of claim 11 , further comprising stopping detection in response to the master touch system detecting no touch in the display area.

13. The touch control method of claim 11 , further comprising:
while the master touch system is detecting, transmitting a stop signal to the master touch system in response to the preliminary touch system detecting a touch; and stopping detection by the master touch system in response to the stop signal transmitted by the preliminary touch system.

14. The touch control method of claim 13 , wherein:
the preliminary touch electrodes are located in the non-display area; and the start touch is a touch sliding from outside to inside of the non-display area; or
the preliminary touch electrodes are located in a peripheral area of the display

Assignees

• Shanghai Avic Optoelectronics
• Tianma Micro Electronics Co Ltd

Inventors

• Wang Xiangchun
• Wang Xupeng
• Huang Zhengyuan
• Li Li

Classifications

• G06F3/04883

  for inputting data by handwriting, e.g. gesture or text · CPC title

• G06F3/044 Primary

  by capacitive means · CPC title

• G06F3/0416 Primary

  Control or interface arrangements specially adapted for digitisers · CPC title

• G06F2203/04106

  Multi-sensing digitiser, i.e. digitiser using at least two different sensing technologies simultaneously or alternatively, e.g. for detecting pen and finger, for saving power or for improving position detection · CPC title

• G06F2203/04108

  Touchless 2D- digitiser, i.e. digitiser detecting the X/Y position of the input means, finger or stylus, also when it does not touch, but is proximate to the digitiser's interaction surface without distance measurement in the Z direction · CPC title