Side-entering type backlight module and liquid crystal display device and backlight plate optical inspection method

Abstract

The invention discloses a side-entering backlight module and a liquid crystal display device and a backlight plate optical inspection method. The backlight module comprises a backlight plate main body, wherein the backlight plate main body comprises a first substrate used for bearing a light guide plate to be inspected and a second substrate detachably connected with the first substrate, the second substrate is provided with a light source moving module, and the light source moving module is provided with a light source. According to the invention, the light source moving module is adopted todrive the light source to move in the direction perpendicular to the light source moving module, so that the distance between the light source and the light guide plate is adjusted, the phenomenon that the optical index is not qualified due to the distance problem between the incident side of the light guide plate and the light source is avoided, namely, the misjudgment probability of whether thelight guide plate is qualified or not is reduced, in the process, the light guide plate does not need to be touched and moved, the pollution and scratch of the light guide plate cannot be caused, theloss is reduced, the cost is saved, and the backlight plate main body is not an integral structure, so that the transportation is convenient.

Description

technical field [0001] The disclosure belongs to the field of optical inspection of light guide plates, and in particular relates to a side-entry backlight module for inspecting light guide plate optics with adjustable light bar distances, a liquid crystal display device using the backlight module, and a backlight using the side-entry backlight module. Board optical inspection method. Background technique [0002] The rapid development of my country's liquid crystal display industry has driven the development of many enterprises producing liquid crystal backlight module components. The backlight module is divided into side-type backlight and direct-type backlight. The present disclosure is directed to a backlight module of an edge-lit backlight. [0003] The main component of the backlight module of the side-lit backlight is the light guide plate. After ink printing or laser dotting, the light guide plate needs to be inspected optically. The optical inspection is usually ...

AI Technical Summary

Problems solved by technology

The price of a light guide plate ranges from 50-1500 yuan, which is a big loss

In addition, experienced employees will intentionally push the light guide plate toward the light bar when inspecting the light guide plate, so as to reduce the distance between the light bar and the light-incident side of the light guide plate. Although this can improve the optical detection value of the light guide plate, it cannot Avoid touching the moving light guide plate, causing stains and scratches on the light guide plate, especially for 86-inch (1.9m*1.2m) or larger light guide plates, it is difficult to move at all

The above problems will cause the loss of the enterprise

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