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Device and method for testing screen color level

A technology of testing device and testing method, which is applied in the direction of color measuring device, measuring device, optical instrument testing, etc., can solve the problems that the color performance of the display cannot be guaranteed, and the uniformity of the luminous ratio is difficult to achieve, so as to improve the testing efficiency and save the testing time Effect

Inactive Publication Date: 2009-11-04
SHENZHEN FUTAIHONG PRECISION IND CO LTD +1
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  • Abstract
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Problems solved by technology

[0003] In the production process of displays, it is generally difficult to achieve the uniformity of the red, green, and blue primary color emission ratios, which makes manufacturers unable to ensure that each display can achieve the best color performance when it leaves the factory, even if it is the same brand, The same is true for displays produced in the same batch and with the same process

Method used

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  • Device and method for testing screen color level
  • Device and method for testing screen color level
  • Device and method for testing screen color level

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Embodiment Construction

[0013] Such as figure 1 Shown is an application environment architecture diagram of a preferred embodiment of the screen color scale testing device of the present invention. The screen color level testing device 11 is connected with a display screen 12 and a color scanner 13 .

[0014] The display screen 12 may be a display screen on any electronic device, such as a display screen of a television, a computer, a mobile phone, a digital camera, and the like. The display screen 12 can be a display screen of any bit. For different-bit display screens, the color scale levels represented are different, and an n-bit display screen can represent 2 n a color scale. For example, a 1-bit display can only represent 2 1 =2 color gradation levels: pure white (color gradation is 0), pure black (color gradation is 255), the color gradation interval between these two color gradation levels is 255; 2-bit display screen can represent 2 2 = 4 color gradation levels, the color gradation inter...

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Abstract

The invention provides a method for testing screen color level. The method comprises the following steps: providing a display screen and a color scanner; dividing the display screen into 2 color block areas according to the bit number n of the display screen; setting different primary color level values for the color block areas so that each color block area in the 2 color block areas corresponds to a corresponding color level grade in 2 color level grades; displaying the color block areas and colors corresponding to the primary color level values set on the color block areas on the display screen; scanning all color block areas on the display screen through the color scanner, and acquiring the color level value of each scanned color block area as an output color level value of each color block area; and analyzing the color level display performance of the display screen according to the output color level value of each color block area. The invention also provides a device for testing the screen color level. The method and the device can test the color level of the display screen once so as to save test time and improve test efficiency.

Description

technical field [0001] The invention relates to a screen color scale testing device and method. Background technique [0002] A point that people see with the naked eye on the display screen, that is, a pixel, is composed of three sub-pixels of red, green, and blue (RGB). For each sub-pixel, the light source behind it can show different brightness levels. The color scale represents the level of brightness from the darkest to the brightest. The more intermediate levels there are, the more delicate the picture effect can be presented. Taking an 8-bit (bit) display as an example, it can display 2 8 That is, 256 brightness levels, we call it 256 color levels. [0003] In the production process of displays, it is generally difficult to achieve the uniformity of the red, green, and blue primary color emission ratios, which makes manufacturers unable to ensure that each display can achieve the best color performance when it leaves the factory, even if it is the same brand, The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M11/00G01M11/02G01J3/46
CPCG09G3/2007G09G3/006
Inventor 周盟杰
Owner SHENZHEN FUTAIHONG PRECISION IND CO LTD
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