Detection method and detection device of glass substrate in liquid crystal display

Abstract

The invention provides a detection method and a detection device of a glass substrate in a liquid crystal display. The method comprises the following steps of: step 1, providing the detection device, wherein the detection device comprises a body, an operating console arranged on the body, an irradiation lamp which is arranged on the body and is positioned above the operating console, as well as a steam jet which is arranged on the body and is positioned above the operating console, the operating console is provided with a bearing surface, and an included angle is arranged between the bearing surface and the horizontal surface; step 2, placing a glass substrate to be detected on the bearing surface; and step 3, turning on the irradiation lamp, spraying steam onto the glass substrate to be detected through the steam jet, and meanwhile, carrying out ocular estimation detection on the glass substrate attached with the steam. According to the method and the device, the steam is sprayed on the glass substrate, and multiple rays are reflected within a vision range of supervisory personnel, so that the detection ability of the supervisory personnel is improved, the macroscopic defects and potential defects of the glass substrate of the liquid crystal display can be effectively detected, and the quality of the liquid crystal display is guaranteed.

Description

technical field [0001] The invention relates to the field of liquid crystal display production, in particular to a detection method and detection device for a glass substrate in a liquid crystal display. Background technique [0002] Liquid Crystal Display (LCD, Liquid Crystal Display) has many advantages such as thin body, power saving, and no radiation, and has been widely used. Most of the liquid crystal displays currently on the market are backlight liquid crystal displays, which include a liquid crystal display panel and a backlight module. The working principle of the liquid crystal display panel is to place liquid crystal molecules between two parallel glass substrates, and control the liquid crystal molecules to change direction through whether the glass substrates are energized or not, and refract the light from the backlight module to produce a picture. [0003] Usually, a liquid crystal display device consists of an upper substrate (CF, Color Filter), a lower sub...

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Problems solved by technology

[0005] However, due to the extremely high transmittance (about 90% or more) and good surface flatness of the glass substrate surface of the liquid crystal display, this makes it possible to detect only obvious macroscopic defects when using the above two detection methods. Cannot effectively check for potential defects on glass

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