Orientation micro-detection device and orientation detection method

Abstract

The invention provides an orientation micro-detection device and an orientation detection method. The orientation micro-detection device comprises a platform used for placing a liquid crystal displaypanel, two first guide rails which are parallelly arranged at two sides of the platform, a second guide rail arranged above the platform, a third guide rail which is arranged below the platform and isparallel and opposite to the second guide rail, a camera and an auxiliary pressing mechanism arranged on the second guide rail, a light source arranged on the third guide rail, a probe module arranged below the platform and a power supply electrically connected with the probe module. When detection is carried out, the liquid crystal display panel is firstly pressed by the auxiliary pressing mechanism, and the displayed picture on the liquid crystal display panel is shot by the camera, poor orientation which cannot be detect in a static picture is detected, the accuracy of the orientation detection is improved and the generation of batch abnormal orientations is avoided.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an alignment microscopic detection device and an alignment detection method. Background technique [0002] Liquid Crystal Display (LCD) has many advantages such as thin body, power saving, and no radiation, and has been widely used, such as LCD TV, mobile phone, personal digital assistant, digital camera, computer screen or notebook computer screen, etc. . [0003] Most of the existing liquid crystal displays are backlight liquid crystal displays, which include a housing, a liquid crystal panel disposed in the housing, and a backlight module disposed in the housing. Generally, a liquid crystal panel is composed of a color filter substrate (Color Filter, CF), a thin film transistor array substrate (Thin Film Transistor Array Substrate, TFT Array Substrate), and a liquid crystal layer (Liquid Crystal Layer) filled between the two substrates. , its working principle is to control...

AI Technical Summary

Problems solved by technology

However, in the actual manufacturing process, some alignment defects cannot be observed through static images. For example, alignment abnormalities caused by no signal input from the common electrode of the array substrate during alignment. These defects can only be detected in the cell test stage after the box is formed. The specific detection method is to use the pressing rod to hit the substrate. If the screen can return to the state before pressing in a short time (within 1s), then the substrate is not defective. If the screen cannot be restored for a long time (generally more than 2s) to the state before pressing, the substrate is defective

However, these defects cannot be accurately detected in the phase of microscopic alignment detection, which makes the alignment detection of liquid crystal display panels have relatively large loopholes, which may cause abnormal alignment in batches.

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