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Gamma value measuring method of display apparatus

A display device, gamma value technology, applied in static indicators, instruments, etc., can solve problems such as affecting the progress of new products, spending more time, and inability to judge the success of debugging results, so as to improve development time and production efficiency. , the effect of shortening the measurement time

Active Publication Date: 2014-08-13
SHANGHAI AVIC OPTOELECTRONICS +1
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Problems solved by technology

[0008] Existing gamma debugging methods for display devices require multiple cycles of measurement and comparison. It takes a long time to test all gray levels in one cycle, and all gray levels need to be measured repeatedly in each cycle. The measurement stage will take a lot of time, which will affect the progress of the new product, and it is impossible to judge whether the final debugging result is successfully programmed; similarly, the gamma measurement of the display device in the mass production stage also needs to measure all gray Level brightness value, long measurement time, affecting product output

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Embodiment Construction

[0019] The method for measuring the gamma value of the display device proposed by the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0020] The core idea of ​​the present invention is that in the process of measuring the gamma value of the display device, a plurality of test pictures are displayed in partitions on the same screen of the display device, each test screen corresponds to a different gray scale, and the same screen is measured and displayed The luminance values ​​of the plurality of test pictures can greatly shorten the time for gamma value measurement under th...

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Abstract

The invention provides a gamma value measuring method of a display apparatus. The method comprises displaying multiple test images in the same image of the display apparatus in a partition mode, the testing image being corresponding to different gray scales, and simultaneously measuring the brightness values of the multiple test images displayed in the same image in the partition mode, such that under the condition that the measuring precision is not changed, the gamma value measuring time can be substantially shortened and the development time of a new product and the production efficiency are improved; and at the same time, in the gamma value measuring method of the display apparatus, a finally measured gamma value result is output through a driving IC output port, whether programming succeeds or not can be identified, and the gamma value measuring efficiency is improved.

Description

technical field [0001] The invention relates to the display field, in particular to a method for measuring a gamma value of a display device. Background technique [0002] Liquid crystal display devices are widely used in various fields due to their advantages of lightness, thinness, low radiation, and low energy consumption. For a liquid crystal display device, the input voltage signal will generate brightness output on the screen, but the brightness of the liquid crystal display is not proportional to the input voltage signal, and there is a kind of distortion. If the input is a black-and-white image signal, this distortion will make the middle of the displayed image darker, so that the adjustment body of the image is darker than the original scene. If the input is a color image signal, this distortion will make the displayed image darker. In addition to being darker, it also shifts the color tone of the displayed image. Gamma is the measurement parameter of this distort...

Claims

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Application Information

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IPC IPC(8): G09G3/00
Inventor 王香春王徐鹏
Owner SHANGHAI AVIC OPTOELECTRONICS
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