Display device setting touch areas corresponding to each of display areas

Patent metadata

Field	Value
Publication number	US-12487702-B2
Application number	US-202418752952-A
Country	US
Kind code	B2
Filing date	Jun 25, 2024
Priority date	Oct 18, 2023
Publication date	Dec 2, 2025
Grant date	Dec 2, 2025

Abstract

A display device includes: a display driver for displaying an image on a display panel of the display device, and generating a mode control signal indicating whether the display panel includes at least one of a first display area and a second display area; and a sensor driver for setting a touch sensitivity of a first touch area of the display device corresponding to the first display area and a touch sensitivity of a second touch area of the display device correspond to the second display area, based on the mode control signal.

First claim

What is claimed is:

1 . A display device comprising:
a display driver configured to display an image on a display panel of the display device, and generate a mode control signal indicating whether the display panel includes at least one of a first display area and a second display area; and a sensor driver configured to set a touch sensitivity of a first touch area of the display device corresponding to the first display area and a touch sensitivity of a second touch area of the display device corresponding to the second display area to be different from each other, based on the mode control signal, wherein a viewing angle of the first display area is smaller than a viewing angle of the second display area.

2 . The display device of claim 1 , wherein the display driver outputs the mode control signal to the sensor driver for each cycle of a vertical synchronization signal.

3 . The display device of claim 1 , wherein, when the display panel includes the first display area, the mode control signal includes at least one pulse.

4 . The display device of claim 1 , wherein the sensor driver comprises:
a first logic circuit configured to output an enable signal when a voltage level of the mode control signal is changed; a second logic circuit configured to determine the first display area, based on the mode control signal in response to receipt of the enable signal, and generate a first touch control signal indicating the first display area; and a touch controller configured to determine the first touch area, based on the first touch control signal, and supply a first driving signal to the first touch area.

5 . The display device of claim 4 , wherein the second logic circuit determines a range of the first display area according to a width of a first pulse of the mode control signal.

6 . The display device of claim 4 , wherein the second logic circuit determines a range of the first display area according to a number of pulses included in the mode control signal.

7 . The display device of claim 4 , wherein the first logic circuit outputs a second touch control signal when the voltage level of the mode control signal is maintained, and
wherein the touch controller supplies a second driving signal to a sensor of the display device when the touch controller receives the second touch control signal.

8 . The display device of claim 7 , wherein a number of pulses included in the first driving signal is greater than a number of pulses included in the second driving signal.

9 . The display device of claim 7 , wherein a slew rate of the first driving signal is higher than a slew rate of the second driving signal.

10 . The display device of claim 1 , wherein the touch sensitivity of the first touch area is higher than the touch sensitivity of the second touch area.

11 . A display device comprising:
a display driver configured to display an image on a display panel of the display device, generate a mode control signal indicating whether the display panel includes at least one of a first display area and a second display area, and generate an encoding signal by encoding a vertical synchronization signal and the mode control signal; and a sensor driver configured to set a touch sensitivity of a first touch area of the display device corresponding to the first display area and a touch sensitivity of a second touch area of the display device corresponding to the second display area to be different from each other, based on the encoding signal, wherein the sensor driver determines a range of the first display area according to a width of a first pulse of the encoding signal.

12 . The display device of claim 11 , wherein a viewing angle of the first display area is smaller than a viewing angle of the second display area.

13 . The display device of claim 11 , wherein the display driver comprises:
a signal generator configured to generate the mode control signal including a number of pulses, which corresponds to the range of the first display area, when the display panel includes the first display area; and an encoder configured to generate the encoding signal by encoding the mode control signal and the vertical synchronization signal.

14 . The display device of claim 11 , wherein the display driver comprises:
a signal generator configured to output, as the mode control signal, a pulse signal having a first duration during a first period when the display panel includes the first display area, and output a pulse signal having a second duration different from the first duration during a second period after the first period; and an encoder configured to generate the encoding signal by encoding the mode control signal and the vertical synchronization signal.

15 . The display device of claim 14 , wherein the signal generator controls pulses included in the mode control signal during the second period according to the range of the first display area.

16 . A display device comprising:
a display driver configured to display an image on a display panel, generate a mode control signal indicating whether the display panel includes at least one of a first display area and a second display area, and generate an encoding signal by encoding a horizontal synchronization signal and the mode control signal; and a sensor driver configured to set a touch sensitivity of a first touch area of the display device corresponding to the first display area and a touch sensitivity of a second touch area of the display device to be different from each other, based on the encoding signal, wherein the display driver comprises: a signal generator configured to output a pulse signal as the mode control signal during a control period in a period of a frame when the display panel includes the first display area; and an encoder configured to generate the encoding signal by encoding the mode control signal and the horizontal synchronization signal.

17 . The display device of claim 16 , wherein a viewing angle of the first display area is smaller than a viewing angle of the second display area.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Soo Won
• Lee Hyun Jae
• Kim Young Sik
• Kim Yun Ho
• Yoo Young Seok

Classifications

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G06F3/0446

  using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes · 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

• G06F3/041661 Primary

  using detection at multiple resolutions, e.g. coarse and fine scanning; using detection within a limited area, e.g. object tracking window · CPC title

• G06F3/0416 Primary

  Control or interface arrangements specially adapted for digitisers · CPC title