Display and method and system for compensating brightness or color of display

A color compensation and display technology, applied to static indicators, cathode ray tube indicators, instruments, etc., can solve problems such as voltage, brightness, and chromaticity differences, and achieve the effect of compensating brightness

Inactive Publication Date: 2016-07-20
WISTRON CORP
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

The manufacture of LED belongs to the semiconductor manufacturing process, which needs to go through epitaxial growth and filling phosphor powder and other manufacturing processes, and the modulation of epitaxial layer and phosphor powder will inevitably lead to differences in voltage, brightness, and chromaticity of manufactured LEDs

Method used

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  • Display and method and system for compensating brightness or color of display
  • Display and method and system for compensating brightness or color of display
  • Display and method and system for compensating brightness or color of display

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Embodiment Construction

[0045] The present invention captures the entire screen of the liquid crystal display module (LCDModule, LCM) by using the shooting system, generates the inverse compensation gain table (GainTable) of the brightness and chromaticity of the entire screen through an algorithm, and writes the gain table into the display . In this way, each time the display displays a picture, the gain value of each pixel can be read through the firmware, and an on-screen display (OSD) technology is used to generate a transparent screen display layer to be superimposed on the picture to be displayed. In this way, brightness and color unevenness (mura) of the display can be compensated without additional hardware.

[0046] figure 1 It is a schematic diagram of a brightness and color compensation system of a display according to an embodiment of the present invention. Please refer to figure 1 , the display brightness of the present embodiment, the color compensation system 10 comprises three part...

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Abstract

A display and a method and a system for compensating a brightness or a color of the display are provided. In the method, an image of a homogeneous frame displayed on the display is captured by an image capturing device, and a brightness or color distribution of a plurality of pixel values of the captured image is calculated to determine a target value used for adjusting the brightness or the color of the display. Based on the target value, a plurality of gain values of the pixels of the display are calculated by using the pixel values, and recorded in a gain table. The gain table is written to the display. The display inquires the gain values in the gain table to generate a translucent layer, overlap the translucent layer with a current frame to be displayed, and output the overlapped current frame to a display panel for display. The objective of compensating for the non-uniformity of brightness and color of the display is achieved.

Description

technical field [0001] The present invention relates to a display, and in particular to a display and its brightness and color compensation method and system. Background technique [0002] Most of the current Liquid Crystal Displays (LCDs) use backlight modules using Light-Emitting Diodes (LEDs) as light sources. The backlight modules can be divided into direct-type and side-type according to their light input methods. The manufacture of LED is a semiconductor manufacturing process, which needs to go through epitaxial growth and phosphor filling and other manufacturing processes, and the modulation of the epitaxial layer and phosphor will inevitably lead to differences in voltage, brightness, and chromaticity of the manufactured LEDs. Therefore, LEDs are classified into three categories according to voltage difference value, brightness difference value, and chromaticity difference value and made into LED light bars (LightBar). Among them, since the luminance and chromaticit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G5/10
CPCG09G5/14G09G2320/0285G09G2320/043G09G2320/0233G09G3/2003G09G3/3607G09G2320/0242
Inventor 李沧兴陈柏旭林永智高盟超
Owner WISTRON CORP
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