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A method for reducing the brightness of a display screen, its device, and a display device

A technology for displaying images and brightness, which is applied to static indicators, cathode ray tube indicators, instruments, etc. It can solve the problems of reducing the brightness of the display screen, reducing the flexibility of the display screen brightness, etc., and achieves the effect of excellent flexibility

Active Publication Date: 2020-05-29
BOE TECH GRP CO LTD
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Problems solved by technology

[0005] Embodiments of the present invention provide a method for reducing the brightness of a display screen, its device, and a display device to solve the problem of how to reduce the brightness of a display screen without affecting the contrast of the display screen in the prior art, and improve the efficiency of reducing the brightness of the display screen. question of flexibility

Method used

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  • A method for reducing the brightness of a display screen, its device, and a display device
  • A method for reducing the brightness of a display screen, its device, and a display device
  • A method for reducing the brightness of a display screen, its device, and a display device

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Embodiment 1

[0091] Embodiment 1: Take the first frame to the third frame as an example, and combine Figure 4 A flowchart of the method shown, and Figure 5 The interactive flow chart shown; where, F1 represents the first frame, L1 represents the display time in the first frame, V1 represents the non-display time in the first frame, F2 represents the second frame, and L2 represents the display in the second frame V2 represents the non-display time in the second frame, F2' represents the second frame after brightness adjustment, F3 represents the third frame, F3' represents the third frame after brightness adjustment, F3" represents the time after reducing the brightness of the display screen third frame.

[0092] S401. Determine the brightness histogram of the first frame display screen;

[0093] S402. Determine the brightness equalization histogram and dynamic range expansion parameters of the first display frame according to the brightness histogram of the first display frame;

[009...

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Abstract

The invention discloses a method for reducing the brightness of a display screen, its device and a display device. Firstly, according to the determined grayscale mapping table corresponding to the previous frame of the display screen, the brightness of each pixel in the current frame of the display screen is adjusted to make the brightness The place is brighter, the dark place is darker, and the contrast of the display screen of this frame is increased; then, according to the determined brightness value, determine the brightness reduction coefficient; then according to the brightness reduction coefficient, reduce the pixel value of the next frame display screen brightness. Therefore, this method is carried out on the basis of increasing the contrast of the display screen, and can minimize the impact on the contrast of the display screen when reducing the brightness of each pixel of the next frame of display screen; at the same time, the method is According to the brightness of the current frame of the display screen, the brightness of the next frame of the display screen is reduced, that is, the brightness of each pixel of each frame of the display screen is adaptively adjusted, which has excellent flexibility.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a method for reducing the brightness of a display screen, a device thereof and a display device. Background technique [0002] Organic light emitting diode (Organic Light Emitting Display, OLED) display, because of its fast response, wide color gamut, large viewing angle, high brightness, and light weight, has attracted much attention and has been widely used in the display field. Especially in the field of virtual technology (Virtual Reality, VR), OLED displays are usually used as the screens of VR devices; at the same time, with the development of VR technology, the requirements for OLED displays are getting higher and higher, for example, the resolution of OLED displays The rate requirements range from high definition (High Definition, HD) to full high definition (Full High Definition, FHD), and then to quadruple high definition (Quad High Definition, QHD), and the requiremen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G5/10
CPCG09G5/10G09G2320/0626G09G3/20G09G3/3208G09G2330/021G09G2340/14G09G2360/16G09G3/2007G09G2320/066G09G2340/16
Inventor 孙高明毕育欣赖政德杨全
Owner BOE TECH GRP CO LTD
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