Automatic measuring system for visual angle of liquid crystal display

A liquid crystal display, automatic measurement technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problems of difficult operation, complicated measuring process, inconvenient use, etc., and achieve the effect of high work efficiency and good accuracy

Inactive Publication Date: 2005-09-07
ZHEJIANG UNIV
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Problems solved by technology

[0004] In order to ensure the quality of the liquid crystal display, it is necessary to measure the viewing angle characteristics of the liquid crystal display, and the measurement process is very complicated. When measuring the viewing angle characteristics of the liquid crystal display, the liquid crystal display and the color brightness meter must be moved frequently
Especially when measuring the viewing angle characteristics of a large-screen LCD, it is very difficult to manually move the LCD and the color luminance meter
At present, there are some devices that can help to rotate or move LCD monitors and color luminance meters, but they do not have automatic test functions and are inconvenient to use

Method used

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  • Automatic measuring system for visual angle of liquid crystal display
  • Automatic measuring system for visual angle of liquid crystal display

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Embodiment Construction

[0021] Such as figure 1 As shown, the automatic measurement system for the angle of view of a liquid crystal display in this embodiment mainly includes: an industrial computer 13, a driving system U and a three-dimensional motion mechanism A installed on the optical table 9, a driving system V installed on the rotating support platform 23, and a two-dimensional rotating Mechanism B, color luminance meter 1, liquid crystal display 24.

[0022] The industrial computer 13 realizes the operation control of the whole system, and the operator can realize the measurement of each item of the system only by operating the working interface of the industrial computer. A single-chip microcomputer 13-1 is installed in the industrial computer, which communicates with the single-chip microcomputer inserted in the industrial computer through the RS232 serial port, and the drive systems U and V of the three-dimensional linear motion and the two-dimensional rotary motion are respectively drive...

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Abstract

The invention relates to a system of measuring the aspect angle of the liquid crystal display automatically, which can measure the aspect angle, uniformity of luminance, uniformity of chromaticity. The technical project is: 1) controlling machine for the whole system and provide the signal for measuring; 2) driving system(U) and three-dimensional motion device(A), which can be used for linear motion of front and rear, left and right, up and down;3) driving system(V),which realize the motion of pitching and rotating; 4)color brightness meter, which is fixed on the vertical moving channel and measures the color coordinate and brightness of the liquid crystal display. The invention can be used in the fields of manufacturing and measuring the liquid crystal display.

Description

technical field [0001] The invention relates to an automatic measurement system for the angle of view of a liquid crystal display. It is suitable for the production, measurement and testing of LCD screens, LCD monitors and LCD TVs. Background technique [0002] The imaging principle of the liquid crystal display is to place the liquid crystal between two pieces of conductive glass, driven by the electric field between the two electrodes, causing the electric field effect of twisting the liquid crystal molecules, so as to control the transmittance of light and produce bright and dark images. After passing through color filters, a color image is produced. When the liquid crystal display displays images with different brightness, the degree of distortion of the liquid crystal molecules is different, and the angle between the long axis of the liquid crystal molecules and the glass substrate is also different. When the user views the screen from different angles, due to the inf...

Claims

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Application Information

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IPC IPC(8): G01M11/00G01R31/00
Inventor 姚军王梓丞张亮
Owner ZHEJIANG UNIV
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