Analysis method for rapidly grading colors of STN liquid crystal screen

Abstract

The invention discloses an analysis method for rapidly grading colors of an STN liquid crystal screen. The analysis method comprises the following steps that S1, inspection parameters are preset, wherein the inspection parameters include a control parameter and a comparison parameter; S2, the STN liquid crystal screen is placed on detection equipment, and detection is started, wherein the detection equipment comprises a detection table, a feeding mechanism, a positioning mechanism, a detection mechanism and a discharging mechanism; S3, after the STN liquid crystal screen is transferred in place, data of the STN liquid crystal screen are continuously acquired according to the control parameter; S4, all the acquired data are recorded and processed; S5, the colors of the current STN liquid crystal screen are judged according to the comparison parameter and grading is carried out; and S6, the STN liquid crystal screen is sorted according to a detection result. According to the analysis method for rapidly grading the colors of the STN liquid crystal screen, the colors of the STN liquid crystal screen are inspected from multiple angles, automatic grading is achieved in cooperation with automatic equipment, manual grading is replaced, grading consistency is achieved, inspection is rapid and efficient, and the inspection effect is good.

Description

technical field [0001] The invention relates to the technical field of STN liquid crystal screen detection, in particular to an analysis method for rapidly classifying the colors of the STN liquid crystal screen. Background technique [0002] In the production process of STN LCD screen, when the thickness control of STN LCD screen is not accurate, due to the birefringence effect, the thickness deviation of the liquid crystal layer will be sensitively reflected as the change of different colors. For example, according to the design of conventional positive display products, the color of the glass of the STN LCD screen will be pure white after the polarizer is pasted, but the color of the glass with a thinner case thickness will be slightly green or blue, and the color of the glass with a thicker case thickness will be slightly greener or bluer. Will be slightly yellowish or reddish. In order to keep the color of the glass with various thicknesses consistent, the slice angle ...

AI Technical Summary

Problems solved by technology

[0005] 1. When the color of the STN LCD screen is only detected from a fixed angle, it is difficult to judge the color cast of the STN LCD screen in all directions;

[0006] 2. Relying on manual inspection, each person's inspection method, deflection angle and visual difference are different, and the consistency of inspection cannot be achieved, resulting in uneven quality inspection results and poor consistency;

[0007] 3. It is difficult to obtain a clear numerical output of color cast. It can only roughly classify the color positions of STN LCD screens. It is impossible to accurately analyze the color cast direction of STN LCD screens, and it is impossible to obtain the quantitative value of color cast of STN LCD screens.

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