Display driving method, display driver integrated circuit, and electronic device comprising the same

Patent metadata

Field	Value
Publication number	US-2016133223-A1
Application number	US-201514938325-A
Country	US
Kind code	A1
Filing date	Nov 11, 2015
Priority date	Nov 12, 2014
Publication date	May 12, 2016
Grant date	—

Abstract

A display driver integrated circuit is disclosed. The display driver integrated circuit includes panel signal supply circuitry configured to supply an image signal corresponding to image data to a panel, pixel power supply circuitry configured to supply pixel power to a pixel that receives the image signal, and a controller configured to control the pixel power supply circuitry to supply the pixel power based on an on-pixel ratio (OPR) value of the image data.

First claim

What is claimed is:

1 . A display driver integrated circuit comprising:
panel signal supply circuitry configured to supply an image signal corresponding to image data to a panel; pixel power supply circuitry configured to supply pixel power to a pixel that receives the image signal; and a controller configured to control the pixel power supply circuitry to supply the pixel power based on an on-pixel ratio (OPR) value of the image data.

2 . The display driver integrated circuit of claim 1 , wherein the controller is configured to control the pixel power supply circuitry to supply the pixel power when the OPR value satisfies a predetermined condition.

3 . The display driver integrated circuit of claim 1 , wherein the controller is configured to control the panel signal supply circuitry to change a frame rate of the image signal being supplied when the OPR value satisfies a predetermined condition.

4 . The display driver integrated circuit of claim 3 , wherein the controller is configured to control the panel signal supply circuitry to lower the frame rate of the image signal.

5 . The display driver integrated circuit of claim 1 , further comprising:
a gamma voltage generator configured to perform gamma correction about the image signal, and wherein the panel signal supply circuitry supplies the gamma-corrected image signal to the panel when the OPR value satisfies a predetermined condition.

6 . An electronic device comprising:
a panel including a plurality of pixels and configured to display a screen based on image data; a processor configured to control a source of a pixel power to be supplied to the panel based on an OPR value of the image data; a display driver circuit configured to supply an image signal corresponding to the image data to the panel and to supply a pixel power to a pixel, to which the image signal is supplied, under the control of the processor; and pixel power supply circuit configured to supply a pixel power, to which the image signal is supplied, under the control of the processor.

7 . The electronic device of claim 6 , wherein the processor is configured to control the display driver circuit to supply the pixel power when the OPR value satisfies a predetermined condition.

8 . The electronic device of claim 7 , wherein the processor is configured to control the pixel power supply circuit to stop supplying the pixel power.

9 . The electronic device of claim 6 , wherein the processor is configured to control the display driver circuit to change a frame rate of the image signal when the OPR value satisfies a predetermined condition.

10 . The electronic device of claim 9 , the processor is configured to control the display driver circuit to lower the frame rate of the image signal when the OPR value satisfies a predetermined condition.

11 . The electronic device of claim 6 , wherein the display driver performs gamma correction for the image signal and supplies the gamma-corrected image signal to the panel when the OPR value satisfies a predetermined condition.

12 . The electronic device of claim 6 , wherein the processor is configured to control the pixel power supply circuit to supply the pixel power when the OPR value satisfies a predetermined condition.

13 . The electronic device of claim 12 , wherein the processor is configured to control the display driver circuit to stop supplying the pixel power.

14 . A method for driving a display, comprising:
generating an image signal corresponding to image data and selecting one pixel power supply circuit to supply pixel power to a panel, from among a plurality of pixel power supply circuits based on an OPR value of the image data; and supplying the image signal and a pixel power from the selected pixel power supply circuit to the panel.

15 . The method of claim 14 , wherein the plurality of pixel power supply circuits comprises a first pixel power supply circuit configured to generate a pixel power of a first level and a second pixel power supply circuit configured to generate a pixel power of a second level greater than the first level, and
wherein selecting comprises: selecting the first pixel power supply circuit when the OPR value satisfies a predetermined condition.

16 . The method of claim 15 , wherein selecting comprises:
stopping the second pixel power supply circuit to supply a pixel power.

17 . The method of claim 15 , wherein supplying comprises:
supplying the image signal with a changed frame rate.

18 . The method of claim 17 , wherein the changed frame rate is obtained by lowering a frame rate.

19 . The method of claim 15 , wherein supplying further comprises:
performing gamma correction on the image signal.

20 . The method of claim 15 , wherein the first pixel power supply circuit is included in a display driver integrated circuit.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Kim Dong Hui
• Ha Young Hee

Classifications

• G09G2320/0673

  for control of gamma adjustment, e.g. selecting another gamma curve · CPC title

• G09G2360/16

  Calculation or use of calculated indices related to luminance levels in display data · CPC title

• G09G3/3225 Primary

  using an active matrix · CPC title

• G09G3/20

  for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix {no fixed position being assigned to or needed to be assigned to the individual characters or partial characters} · CPC title

• G09G2330/021

  Power management, e.g. power saving · CPC title