Display device including touch panel and method of driving the same

Patent metadata

Field	Value
Publication number	US-2023418415-A1
Application number	US-202318100228-A
Country	US
Kind code	A1
Filing date	Jan 23, 2023
Priority date	Jun 23, 2022
Publication date	Dec 28, 2023
Grant date	—

Abstract

A display device includes a display panel, a touch panel on the display panel, a host processor, and a display panel driver. The host processor receives proximity data of the touch panel. The display panel driver receives an input control signal from the host processor and drives the display panel based on the input control signal. The touch panel includes a proximity area and a non-proximity area. The host processor counts a rise of the proximity data in the proximity area to generate a first count value. The host processor resets the first count value when the proximity data in the non-proximity area increase.

First claim

What is claimed is:

1 . A display device comprising:
a display panel; a touch panel on the display panel; a host processor which receives proximity data of the touch panel; and a display panel driver which receives an input control signal from the host processor and drives the display panel based on the input control signal; wherein the touch panel includes a proximity area and a non-proximity area, wherein the host processor counts a rise of the proximity data in the proximity area to generate a first count value, and wherein the host processor resets the first count value when the proximity data in the non-proximity area increases.

2 . The display device of claim 1 , wherein the host processor stops displaying an image on the display panel when the first count value is equal to or greater than a first reference value.

3 . The display device of claim 1 , wherein the host processor counts the rise of the proximity data in the non-proximity area to generate a second count value and resets the first count value when the second count value is greater than or equal to a second reference value.

4 . The display device of claim 3 , wherein the host processor determines the rise of the proximity data in the non-proximity area based on a slope of the proximity data.

5 . The display device of claim 4 , wherein the host processor extracts two proximity data at a predetermined time interval, and increases the second count value when the slope of the two proximity data is positive.

6 . The display device of claim 1 , wherein the host processor determine the rise of the proximity data in the proximity area based on the slope of the proximity data.

7 . The display device of claim 6 , wherein the host processor extracts two proximity data at a predetermined time interval, and increases the first count value when the slope of the two proximity data is positive.

8 . The display device of claim 1 , wherein the non-proximity area of the touch panel is disposed lower than the proximity area of the touch panel.

9 . The display device of claim 1 , wherein the first count value is reset immediately after the proximity data in the non-proximity area increases.

10 . The display device of claim 1 , wherein the first count value is reset after a predetermined delay time from a time point when the proximity data in the non-proximity area increases.

11 . The display device of claim 1 , wherein the first count value is reset by a rising period of the proximity data in the non-proximity area from a time point when the rise of the proximity data in the non-proximity area is finished.

12 . The display device of claim 1 , wherein the proximity data is a capacitance.

13 . A method of driving a display device, the method comprising:
measuring proximity data of a touch panel of the display device; providing the proximity data of the touch panel to a host processor of the display device; generating a first count value by counting a rise of the proximity data in a proximity area of the touch panel; and resetting the first count value when the proximity data in a non-proximity area of the touch panel increases.

14 . The method of claim 13 , further comprising:
stopping displaying an image of a display panel of the display device when the first count value is equal to or greater than a first reference value.

15 . The method of claim 13 , wherein the host processor counts a rise of the proximity data in the non-proximity area to generate a second count value, and resets the first count value when the second count value is greater than or equal to a second reference value.

16 . The method of claim 15 , wherein the host processor determines the rise of the proximity data in the non-proximity area based on a slope of the proximity data.

17 . The method of claim 16 , wherein the host processor extracts two proximity data at a predetermined time interval, and increases the second count value when the slope of the two proximity data is positive.

18 . The method of claim 13 , wherein the first count value is reset immediately after the proximity data in the non-proximity area increases.

19 . The method of claim 13 , wherein the first count value is reset after a predetermined delay time from a time point when the proximity data in the non-proximity area increases.

20 . The method of claim 13 , wherein the first count value is reset by a rising period of the proximity data in the non-proximity area from a time point when the rise of the proximity data in the non-proximity area is finished.

Assignees

• Samsung Display Co Ltd

Inventors

• Bae Woomi
• Kim Jinwoo
• Lee Soongyu
• Lee Hyojin

Classifications

• G06F3/0418 Primary

  for error correction or compensation, e.g. based on parallax, calibration or alignment · CPC title

• G06F3/045

  using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact · 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

• G06F3/044

  by capacitive means · CPC title

• G06F3/042

  by opto-electronic means · CPC title