Display device, gamma voltage data group switching method and module

Patent metadata

Field	Value
Publication number	US-12555552-B2
Application number	US-202218557867-A
Country	US
Kind code	B2
Filing date	Sep 23, 2022
Priority date	Sep 23, 2022
Publication date	Feb 17, 2026
Grant date	Feb 17, 2026

Abstract

A display device, a gamma voltage data group switching method and module. The display device includes a display-driver integrated circuit and a first storage unit. The display-driver integrated circuit includes a second storage unit, and the display device includes a gamma voltage data group switching module. The gamma voltage data group switching module is configured to pre-store, in the first storage unit, multiple groups of gamma voltage data groups respectively applied to various application scenarios; when switching of an application scenario of the display device, load a gamma voltage data group corresponding to the current application scenario and stored in the first storage unit into the second storage unit.

First claim

What is claimed is:

1 . A display device, comprising: a display-driver integrated circuit and a first storage unit; wherein the display-driver integrated circuit comprises a second storage unit, and the display device comprises a gamma voltage data group switching module;
the gamma voltage data group switching module is configured to pre-store, in the first storage unit, multiple groups of gamma voltage data groups respectively applied to various application scenarios; when switching of an application scenario of the display device, load a gamma voltage data group corresponding to the current application scenario and stored in the first storage unit into the second storage unit; wherein the switching of the application scenario comprises: switching between an IRC on of the display device and an IRC off of the display device; or wherein the switching of the application scenario comprises: switching between a fingerprint recognition mode of the display device and a non-fingerprint recognition mode of the display device.

2 . The display device according to claim 1 , wherein the display device further comprises a display panel;
the gamma voltage data group switching module is configured to, when switching of the application scenario of the display device, after loading the gamma voltage data group corresponding to the current application scenario and stored in the first storage unit into the second storage unit, control the display-driver integrated circuit to call the gamma voltage data group corresponding to the current application scenario from the second storage unit and control the display panel to display according to the called gamma voltage data group.

3 . The display device according to claim 2 , wherein the gamma voltage data group switching module is configured to, when switching of the application scenario of the display device, in a first display cycle, load the gamma voltage data group corresponding to the current application scenario and stored in the first storage unit into the second storage unit; and in a second display cycle, control the display-driver integrated circuit to call the gamma voltage data group corresponding to the current application scenario from the second storage unit;
the gamma voltage data group switching module is further configured to control the display-driver integrated circuit to control the display panel for performing black frame insertion displaying in the first display cycle and the second display cycle; or, control the display-driver integrated circuit to control the display panel for performing black frame insertion displaying in the first display cycle.

4 . The display device according to claim 1 , wherein a storage capacity of the first storage unit is greater than a storage capacity of the second storage unit.

5 . The display device according to claim 1 , wherein the switching of the application scenario comprises: changing a base frequency of the display device, and/or, changing a display refresh frequency of the display device.

6 . A gamma voltage data group switching method applied to a display device which comprises a first storage unit and a display-driver integrated circuit comprising a second storage unit, the gamma voltage data group switching method comprising:
pre-storing, in the first storage unit, multiple groups of gamma voltage data groups respectively applied to various application scenarios; after switching of an application scenario of the display device, loading a gamma voltage data group corresponding to the current application scenario and stored in the first storage unit into the second storage unit; wherein the switching of the application scenario comprises: switching between an IRC on of the display device and an IRC off of the display device; or wherein the switching of the application scenario comprises: switching between a fingerprint recognition mode of the display device and a non-fingerprint recognition mode of the display device.

7 . The method according to claim 6 , wherein the display device further comprises a display panel; after the step of after switching of the application scenario of the display device, loading the gamma voltage data group corresponding to the current application scenario and stored in the first storage unit into the second storage unit, the gamma voltage data group switching method further comprises:
calling, by the display-driver integrated circuit, the gamma voltage data group corresponding to the current application scenario from the second storage unit and controlling the display panel to display according to the called gamma voltage data group.

8 . The method according to claim 7 , wherein after switching of the application scenario, in a first display cycle, the gamma voltage data group corresponding to the current application scenario and stored in the first storage unit is loaded into the second storage unit; and in a second display cycle, the display-driver integrated circuit calls the gamma voltage data group corresponding to the current application scenario from the second storage unit;
the gamma voltage data group switching method further comprises: controlling, by the display-driver integrated circuit, the display panel for performing black frame insertion displaying in the first display cycle and the second display cycle; or, controlling, by the display-driver integrated circuit, the display panel for performing black frame insertion displaying in the first display cycle.

9 . The method according to claim 8 , wherein the first display cycle is a first frame time, and the second display cycle is a second frame time;
the gamma voltage data group switching method comprises: in case that there is a pulse in an instruction indication signal in a frame time before the first frame time, wherein the pulse is corresponding to an instruction for triggering loading of a gamma voltage data group corresponding to a switched application scenario to the second storage unit, in the first frame time, loading the gamma voltage data group corresponding to the switched application scenario and stored in the first storage unit into the second storage unit; in case that there is a pulse in an instruction indication signal in the first frame time, wherein the pulse is corresponding to an instruction of calling, by the display-driver integrated circuit, the gamma voltage data group corresponding to the switched application scenario from the second storage unit, in the second frame time, calling, by the display-driver integrated circuit, the gamma voltage data group corresponding to the switched application scenario from the second storage unit.

10 . The method according to claim 6 , wherein a storage capacity of the first storage unit is greater than a storage capacity of the second storage unit.

11 . The method according to claim 6 , wherein the switching of the application scenario comprises: changing a base frequency of the display device, and/or, changing a display refresh frequency of the display device.

12 . A gamma voltage data group switching module applied to a display device which comprises a first storage unit and a display-driver integrated circuit comprising a second storage unit; the gamma voltage data group switching module comprising a storage control circuit, an application scenario detection circuit and a loading control circuit;
wherein the storage control circuit is configured to control storing multiple groups of gamma voltage data groups respectively applied to various application scenarios in the first storage unit; the application scenario detection circuit is configured to detect whether an application scenario of the display dev

Assignees

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

Inventors

• Chen Gong
• Zhang Jiaxiang
• Bao Zheng
• Xiang Lian
• Peng Bo
• Fang Yuan
• Kong Yakun
• Li Jingwen
• Li Ziqian
• Wang Mingqiang

Classifications

• G09G2340/0435

  Change or adaptation of the frame rate of the video stream · CPC title

• G09G2320/0673

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

• G09G2320/0276

  for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction · CPC title

• G09G2310/08

  Details of timing specific for flat panels, other than clock recovery · CPC title

• G09G3/2096

  Details of the interface to the display terminal specific for a flat panel (suitable for both CRT and flat panel G09G5/006; specific for a CRT G09G1/167) · CPC title