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Automatic regulating method and device for backlight brightness of splicing screen and splicing screen

A backlight brightness and automatic adjustment technology, which is applied to cathode ray tube indicators, static indicators, instruments, etc., can solve the problems of inconsistent display brightness of multiple display screens, achieve stable effects, simple adjustment methods, and easy realization

Inactive Publication Date: 2015-01-21
BOE TECH GRP CO LTD
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Problems solved by technology

Therefore, when the panel factory is producing, it is necessary to choose LED lights with the same brightness and chromaticity to provide backlight. However, due to the luminous efficiency of LEDs, the differences in the production of LCD panels, and the differences in the assembly process of splicing screens, it will still lead to multiple display screens. Display brightness is inconsistent

Method used

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  • Automatic regulating method and device for backlight brightness of splicing screen and splicing screen
  • Automatic regulating method and device for backlight brightness of splicing screen and splicing screen
  • Automatic regulating method and device for backlight brightness of splicing screen and splicing screen

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Embodiment Construction

[0039] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0040] refer to figure 1 and 2 As shown, the method for automatically adjusting the brightness of the backlight of the splicing screen of the present invention changes the brightness of the backlight by adjusting the pulse width modulation signal value of the display driver module of the display screen. In this embodiment, the splicing screen formed by adjusting 4 display screens is taken as an example, and the 4 display screens are recorded as display screen 1 , display screen 2 , display screen 3 and display screen 4 . It includes the following steps:

[0041]Step S1: Detect the backlight brightness value of the internal light guide plate of each display screen in the...

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Abstract

The invention relates to the field of display technologies and discloses an automatic regulating method for the backlight brightness of a splicing screen. The method comprises the steps that backlight brightness values of a plurality of display screens are detected; the backlight brightness values of the display screens are compared, and the benchmark display screen and the display screens to be regulated are set; the backlight brightness value of the benchmark display screen is subtracted from the backlight brightness values of the display screens to be regulated, so that actual brightness difference values are obtained; the actual brightness difference values are converted into pulse width modulation signal difference values, and the pulse width modulation signal difference values are subtracted from to-be-regulated pulse width modulation signal values, so that regulation pulse width modulation signal values are obtained; backlight modules of the display screens to be regulated receive and execute the corresponding regulation pulse width modulation signal values. The invention further provides an automatic regulating device for the backlight brightness of the splicing screen and the splicing screen.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a splicing screen backlight brightness automatic adjustment method and device thereof, and a splicing screen. Background technique [0002] In recent years, the popular Compact TV (compact TV, that is, narrow-frame TV) and PID (Public Information Display, public information display) splicing screens are used more and more widely, and the splicing technology requirements of splicing screens are also getting higher and higher. The screen is a large-screen splicing screen composed of multiple display screens as display units arranged in a matrix (such as 2×2, 3×3, 4×4 and larger free unlimited splicing), and each display screen displays an image Part of the splicing screen arranged in a matrix can not only display images with a larger area together, but also display different images on separate screens. [0003] The splicing screen is spliced ​​by using more than two display scree...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G5/10G09G3/34
Inventor 褚怡芳郑喆奎赖政德李玮旭
Owner BOE TECH GRP CO LTD
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