Electronic device and operation method thereof

Patent metadata

Field	Value
Publication number	US-12456418-B2
Application number	US-202318499654-A
Country	US
Kind code	B2
Filing date	Nov 1, 2023
Priority date	May 3, 2021
Publication date	Oct 28, 2025
Grant date	Oct 28, 2025

Abstract

An electronic device is provided. The electronic device includes a display, at least one optical sensor, a display driver, at least one processor, and a memory. The display includes a plurality of pixels, and a plurality of color filters disposed on top of the plurality of pixels. The at least one optical sensor may generate an ultraviolet light exposure value in accordance with the exposure of the plurality of color filters to ultraviolet light. The display driver may control the driving of the display. The at least one processor may control the driving of the display driver. The memory may be operatively connected to the at least one processor. The memory may store instructions which, when executed, allow the at least one processor to calculate a radiation amount based on the value of exposure to ultraviolet rays and exposure time, and compensate color deviation of the plurality of pixels in accordance with deterioration of the plurality of color filters based on the radiation amount.

First claim

What is claimed is:

1. An electronic device comprising:
a display including a plurality of pixels and a plurality of color filters disposed on an upper portion of the plurality of pixels, wherein the plurality of color filters include red, green, and blue low temperature color filters (LTCFs) replacing a polarizing film;
at least one optical sensor configured to generate a value of exposure to ultraviolet rays based on a degree of exposure to ultraviolet rays of the red, green, and blue LTCFs;
a display driver configured to control driving of the display;
memory storing one or more computer programs; and
one or more processors communicatively coupled to the display, the at least one optical sensor, the display driver, and the memory,
wherein the one or more computer programs include computer-executable instructions which, when executed by the one or more processors individually or collectively, cause the electronic device to:
calculate a radiant exposure based on the value of exposure to ultraviolet rays and an amount of exposure time,
obtain a difference value of deterioration among the red, green, and blue LTCFs based on the radiant exposure, and
compensate color deviation of the plurality of pixels in accordance with the difference value of deterioration of the red, green, and blue LTCFs.

2. The electronic device of claim 1 , wherein the one or more computer programs further include computer-executable instructions which, when executed by the one or more processors individually or collectively, cause the electronic device to:
compensate for color deviation of the plurality of pixels in response to deterioration of the red, green, and blue LTCFs based on a cumulative amount of ultraviolet rays.

3. The electronic device of claim 1 , wherein the one or more computer programs further include computer-executable instructions which, when executed by the one or more processors individually or collectively, cause the electronic device to:
compensate for color deviation by performing a gamma correction of each of the plurality of pixels.

4. The electronic device of claim 1 , wherein the at least one optical sensor is disposed on a lower portion of the display.

5. The electronic device of claim 1 , wherein the at least one optical sensor is disposed in a bezel area of the electronic device.

6. The electronic device of claim 1 , wherein the at least one optical sensor is disposed in a same plane as the plurality of pixels in an active area of the display.

7. The electronic device of claim 1 , further comprising:
a position sensor configured to generate position data based on a position of the electronic device; and
a posture sensor configured to generate posture data based on a posture of the electronic device.

8. The electronic device of claim 7 , wherein the display comprises a first area and a second area that are disposed to be unfolded and spaced apart from each other in a first state and adjacent to each other in a second state.

9. The electronic device of claim 8 , wherein the at least one optical sensor is disposed at a lower portion of the first area and at a lower portion of the second area, respectively.

10. The electronic device of claim 9 , wherein the one or more computer programs further include computer-executable instructions which, when executed by the one or more processors individually or collectively, cause the electronic device to:
generate a first value of exposure to ultraviolet rays based on the degree of exposure to ultraviolet rays of a plurality of first color filters disposed in the first area, using a first optical sensor disposed in a lower portion of the first area,
generate a second value of exposure to ultraviolet rays based on the degree of exposure to ultraviolet rays of a plurality of second color filters disposed in the second area, using a second optical sensor disposed in a lower portion of the second area,
compensate for color deviations of a plurality of first pixels disposed in the first area, based on the first value of exposure to ultraviolet rays, and
compensate for color deviation of a plurality of second pixels disposed in the second area, based on the second value of exposure to ultraviolet rays.

11. The electronic device of claim 10 , wherein the at least one optical sensor is disposed at one of a lower portion of the first area or a lower portion of the second area.

12. The electronic device of claim 11 , wherein the one or more computer programs further include computer-executable instructions which, when executed by the one or more processors individually or collectively, cause the electronic device to:
generate a first value of exposure to ultraviolet rays based on the degree of exposure to ultraviolet rays of the plurality of first color filters disposed in the first area, using the at least one optical sensor disposed in a lower portion of the first area,
generate a second value of exposure to ultraviolet rays based on the degree of exposure to ultraviolet rays of the plurality of second color filters disposed in the second area based on a first value of exposure to ultraviolet rays of the first area, an angle between the first area and the second area, and normal vectors of the first area and the second area based on the position data and the posture data,
compensate for color deviations of the plurality of first pixels disposed in the first area based on the first value of exposure to ultraviolet rays, and
compensate for color deviations of the plurality of second pixels disposed in the second area based on the second value of exposure to ultraviolet rays.

13. The electronic device of claim 1 ,
wherein the display includes a first area and a second area,
wherein at least a portion of the display is slidable in a first direction to be visually exposed to an outside of the electronic device in a first state, and
wherein the display is slidable in a second direction opposite the first direction in a second state such that only the first area is visually exposed to the outside.

14. The electronic device of claim 13 , wherein the at least one optical sensor is disposed in a lower portion of the first area.

15. The electronic device of claim 14 , wherein the one or more computer programs further include computer-executable instructions which, when executed by the one or more processors individually or collectively, cause the electronic device to:
generate a first value based on the degree of exposure to ultraviolet rays of a plurality of first color filters disposed in the first area using the at least one optical sensor disposed at a lower portion of the first area, and
compensate for color deviations of a plurality of first pixels disposed in the first area based on the first value of exposure to ultraviolet rays.

16. The electronic device of claim 15 ,
wherein the plurality of first pixels disposed in the first area compensate for color deviation with a first compensation value, and
wherein a plurality of second pixels disposed in the second area compensate for color deviation with a second compensation value that is less than the first compensation value.

17. The electronic device of claim 16 , wherein a plurality of pixels disposed at a boundary of the first area and the second area compensate for color deviation by interpolating an intermediate value between the first compensation value and the second compensation value.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Lee Jaesung
• Bae Jungbae
• Lee Joongyu
• Lee Taewoong
• Kim Kyungtae
• Kim Kwangtai
• Yeom Donghyun

Classifications

• G09G2360/16

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

• G09G2360/144

  the light being ambient light · CPC title

• G09G2320/0673

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

• G09G2320/041

  Temperature compensation · CPC title

• G09G2320/0242

  Compensation of deficiencies in the appearance of colours · CPC title