Liquid crystal display optical parameter measurement method and device based on fiber transmission

Abstract

The invention discloses a liquid crystal display optical parameter measurement method and device based on fiber transmission. The method comprises the following steps: gathering optical signals produced by a liquid crystal display through a lens group probe, adjusting angles of incident light entering the lens group probe according to an adopted standard, meanwhile converging the incident light of which the angles are adjusted, leading optical signals to one end of an optical fiber after convergence, conducting the optical signals to detection equipment through the other end of the optical fiber, measuring the optical signals through the detection equipment, correcting measure results again, and obtaining an accurate value. According to the method, the optical signals produced by the liquid crystal display is conducted to a far end through the optical fiber and then is measured, on one hand, the influence on the measurement probe by the field severe environment is avoided, the measurement stability and reliability are improved, and cost increase cannot be caused, and on the other hand, as the optical fiber has certain flexibility and can be collected into a whole body like a harness, mounting is more flexible, and distributed measurement is convenient to perform.

Description

technical field [0001] The invention belongs to the technical field of testing and detection of liquid crystal screens, and in particular relates to a method and device for measuring optical parameters of liquid crystal screens based on optical fiber conduction. Background technique [0002] In the research and development, production, testing and pre-factory debugging of LCD screens, it is necessary to measure various optical parameters of the LCD screen, such as brightness, chromaticity, flicker and other parameters, in order to optimize and optimize the parameters of the LCD screen. Adjust and judge whether the liquid crystal module is qualified. The traditional measurement method is to place the measuring probe directly above the liquid crystal module to directly measure various parameters of the liquid crystal module. But in some special occasions or circumstances, this method has great defects. For example, in the aging test of the liquid crystal module, due to the h...

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Problems solved by technology

However, in some special occasions or environments, this method has great defects

For example, in the aging test of the liquid crystal module, due to the high temperature and humidity in the aging furnace, it has a great impact on the high-precision measurement probe, which makes the measurement accuracy and reliability drop sharply. Special measuring equipment with high temperature and high humidity not only has limited application range, but also greatly increases the cost

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