Methods, apparatus, and storage media for dimming a display screen

Patent metadata

Field	Value
Publication number	US-10699675-B2
Application number	US-201816328735-A
Country	US
Kind code	B2
Filing date	May 14, 2018
Priority date	Jun 30, 2017
Publication date	Jun 30, 2020
Grant date	Jun 30, 2020

Abstract

Disclosed are methods, apparatus, and storage media for dimming a display screen. The method includes: acquiring a parameter value of the display screen to be adjusted, wherein the parameter value has a correspondence with a brightness of the display screen; and comparing the parameter value with a set threshold to obtain a comparison result, and determining a corresponding dimming mode according to the comparison result, and performing dimming on the display screen via the corresponding dimming mode. The above method for dimming a display screen that determines a dimming mode according to a comparison result may overcome the deficiency caused by determining only one dimming mode, and may further mitigate impacts on the display quality while dimming.

First claim

The invention claimed is:

1. A method for dimming a display screen, comprising:
acquiring a parameter value of the display screen to be adjusted, wherein the parameter value has a correspondence with a brightness of the display screen;
comparing the parameter value with a set threshold to obtain a comparison result;
determining a corresponding dimming mode according to the comparison result,
wherein the display screen drives a pixel by a thin-film transistor,
when the corresponding dimming mode is a first dimming mode, the method comprises adopting a first dimming mode to perform the dimming on the display screen when it is determined that the brightness corresponding to the parameter value is less than the set threshold, a voltage of a data signal received by a pixel driving circuit in the display screen being unchanged during a process of the dimming in the first dimming mode; and
when the corresponding dimming mode is a second dimming mode, the method comprises adopting a second dimming mode when it is determined that the brightness corresponding to the parameter value is not less than the set threshold, wherein the dimming is performed by adjusting the voltage of the data signal in the second dimming mode.

2. The method of claim 1 , wherein the second dimming mode is a source dimming method.

3. The method of claim 1 , wherein the dimming is performed by adjusting an illumination period of a pixel of the display screen in each frame in the first dimming mode.

4. The method of claim 1 , wherein the parameter value comprises a brightness value.

5. The method of claim 4 , wherein the set threshold is between 70 nits and 90 nits.

6. An apparatus for dimming a display screen, comprising:
a parameter value acquisition circuit configured to acquire a parameter value of the display screen to be adjusted, the parameter value having a correspondence with a brightness of the display screen; and
a dimming determination circuit configured to compare the parameter value with a set threshold, and the dimming determination circuit further configured to determine a corresponding dimming mode according to a comparison result,
wherein the display screen drives a pixel by a thin-film transistor, and the dimming determination circuit is configured to perform the dimming on the display screen when it is determined that the brightness corresponding to the parameter value is less than the set threshold, wherein a voltage of a data signal received by a pixel driving circuit in the display screen is unchanged during a process of the dimming in the first dimming mode; and
the dimming determination circuit is configured to perform the dimming on the display screen when it is determined that the brightness corresponding to the parameter value is not less than the set threshold, wherein the dimming is performed by adjusting the voltage of the data signal in the second dimming mode.

7. A method for dimming a display screen, comprising:
acquiring a parameter value of the display screen to be adjusted, the parameter value being correspondent with a brightness of the display screen;
comparing the parameter value with a set threshold to obtain a comparison result;
determining a corresponding dimming mode according to the comparison result; and
performing dimming on the display screen via the corresponding dimming mode,
wherein the parameter value comprises a brightness value, and
wherein the set threshold is between 70 nits and 90 nits.

Assignees

• Kunshan Govisionox Optoelectronics Co Ltd

Inventors

• Wang Yuqing

Classifications

• H10D30/67

  Thin-film transistors [TFT] {(Stacked nanowire, nanosheet or nanoribbon FETs H10D30/501)} · CPC title

• G09G5/10 Primary

  Intensity circuits · CPC title

• G09G3/36

  using liquid crystals · CPC title

• G09G3/3233 Primary

  with pixel circuitry controlling the current through the light-emitting element · CPC title

• G09G3/20 Primary

  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