Color shift compensation method, color shift compensation system and display panel

Patent metadata

Field	Value
Publication number	US-2021193011-A1
Application number	US-201816080137-A
Country	US
Kind code	A1
Filing date	Feb 9, 2018
Priority date	Jul 21, 2017
Publication date	Jun 24, 2021
Grant date	—

Abstract

A color shift compensation method, a color shift compensation system and a display panel are provided. The color shift compensation method includes: accumulating actual display time of a display panel; determining whether or not the actual display time reaches a preset cumulative display time threshold; and in a case where the actual display time reaches the preset cumulative display time threshold, driving the display panel to display according to compensated adjustment voltages that are pre-stored, and in a case where the actual display time does not reach the preset cumulative display time threshold, driving the display panel to display according to current adjustment voltages that are pre-stored.

First claim

1 . A color shift compensation method, comprising:
accumulating actual display time of a display panel; determining whether or not the actual display time reaches a preset cumulative display time threshold; and in a case where the actual display time reaches the preset cumulative display time threshold, driving the display panel to display according to compensated adjustment voltages that are pre-stored, and in a case where the actual display time does not reach the preset cumulative display time threshold, driving the display panel to display according to current adjustment voltages that are pre-stored.

2 . The color shift compensation method according to claim 1 , wherein the compensated adjustment voltages comprise a compensated gamma voltage and a reference voltage of the compensated gamma voltage, and
the current adjustment voltages comprise a current gamma voltage and a reference voltage of the current gamma voltage.

3 . The color shift compensation method according to claim 1 , wherein the preset cumulative display time threshold comprises a plurality of sub-thresholds; and
the compensated adjustment voltages comprise a plurality of sets of voltages, each set of voltages comprises a compensated gamma voltage and a reference voltage, and the sub-thresholds are in one-to-one correspondence with the sets of voltages.

4 . The color shift compensation method according to claim 1 , wherein the preset cumulative display time threshold is less than a service life of the display panel.

5 . The color shift compensation method according to claim 1 , further comprising:
measuring offset data of color coordinates of the display panel varying with display time; according to the offset data of the color coordinates, determining the preset cumulative display time threshold and calculating the compensated adjustment voltages of the display panel corresponding to the preset cumulative display time threshold; and storing the preset cumulative display time threshold and the compensated adjustment voltages.

6 . The color shift compensation method according to claim 5 , wherein the preset cumulative display time threshold is a time period during which the display panel needs to compensate for the current adjustment voltages.

7 . A color shift compensation system, comprising:
a time accumulation module, configured to accumulate actual display time of a display panel; a determining module, configured to determine whether or not the actual display time reaches a preset cumulative display time threshold; and a driving module, configured to, in a case where the actual display time reaches the preset cumulative display time threshold, drive the display panel to display according to compensated adjustment voltages that are pre-stored, otherwise, drive the display panel to display according to current adjustment voltages that are pre-stored.

8 . The color shift compensation system according to claim 7 , wherein the compensated adjustment voltages comprise a compensated gamma voltage and a reference voltage of the compensated gamma voltage, and
the current adjustment voltages comprise a current gamma voltage and a reference voltage of the current gamma voltage.

9 . The color shift compensation system according to claim 7 , further comprising a storage module, configured to store the preset cumulative display time threshold and the compensated adjustment voltages.

10 . The color shift compensation system according to any claim 7 , wherein the preset cumulative display time threshold comprises a plurality of sub-thresholds; and
the compensated adjustment voltages comprise a plurality of sets of voltages, each set of voltages comprises a compensated gamma voltage and a reference voltage, and the sub-thresholds are in one-to-one correspondence with the sets of voltages.

11 . The color shift compensation system according to claim 7 , wherein the preset cumulative display time threshold is less than a service life of the display panel.

12 . The color shift compensation system according to claim 7 , further comprising:
a test module, configured to measure offset data of color coordinates of the display panel varying with display time; and a determining and calculation module, configured to, according to the offset data of the color coordinates of the display panel varying with the display time, determine the preset cumulative display time threshold and calculate the compensated adjustment voltages of the display panel corresponding to the preset cumulative display time threshold.

13 . The color shift compensation system according to claim 12 , wherein the preset cumulative display time threshold is a time period during which the display panel needs to compensate for the current adjustment voltages.

14 . A display panel, comprising the color shift compensation system according to claim 7 .

15 . A color shift compensation device, comprising:
a processor, a nonvolatile memory, storing computer program code which is capable of being executed by the processor to conduct following steps: accumulating actual display time of a display panel; determining whether or not the actual display time reaches a preset cumulative display time threshold; and in a case where the actual display time reaches the preset cumulative display time threshold, driving the display panel to display according to compensated adjustment voltages that are pre-stored, and in a case where the actual display time does not reach the preset cumulative display time threshold, driving the display panel to display according to current adjustment voltages that are pre-stored.

Assignees

• Boe Technology Group Co Ltd
• Chengdu Boe Optoelect Tech Co

Inventors

• Chang Xiaohuan
• Lan Chuanyan
• Yu Yong

Classifications

• G09G3/3225 Primary

  using an active matrix · CPC title

• G09G2360/145

  the light originating from the display screen · CPC title

• G09G2320/048

  using evaluation of the usage time · CPC title

• G09G2320/0242

  Compensation of deficiencies in the appearance of colours · CPC title

• G09G2320/0285

  using tables for spatial correction of display data · CPC title