CF(color filter) substrate and manufacturing method thereof and alignment film alignment angle measuring method

Abstract

The invention provides a CF(color filter) substrate and a manufacturing method thereof and an alignment film alignment angle measuring method. According to the manufacturing method of the CF substrate, a plurality of grooves are formed in a non-display area of the CF substrate and then coated with alignment film so that alignment angle of the alignment film at the grooves can be measured directly. Since the CF substrate is manufactured by the method, the measuring method of the alignment angle of the alignment film is simplified. The alignment film alignment angle measuring method includes forming the alignment film on the CF substrate and then directly measuring the alignment angle of the alignment film at the grooves. As compared with the prior art, manufacturing of a measuring substrate is omitted, the alignment film alignment angle measuring method is simplified, measuring precision is improved, real-time monitoring of the alignment angle of the alignment film in production is achieved, and defective products in batch is avoided.

Description

Technical field [0001] The present invention relates to the field of display technology, in particular to a CF substrate, a manufacturing method thereof, and an alignment angle measurement method of an alignment film. Background technique [0002] With the development of display technology, flat display devices such as Liquid Crystal Display (LCD) have been widely used in mobile phones, TVs, and individuals due to their advantages of high image quality, power saving, thin body and wide application range. Various consumer electronic products, such as digital assistants, digital cameras, notebook computers, and desktop computers, have become the mainstream of display devices. [0003] Most of the liquid crystal display devices currently on the market are backlit 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 substrat...

AI Technical Summary

Problems solved by technology

[0005] In liquid crystal display panels, the CF substrate plays a key role in the display of color images. The CF substrate usually includes a base substrate, a black matrix, and a color photoresist layer arranged in sequence from bottom to top. In the liquid crystal cell manufacturing process, it usually requires Fabricate the alignment film on the CF substrate, because the alignment angle of the alignment film has a significant impact on the optical performance of the liquid crystal display panel, it is usually necessary to measure the alignment angle to confirm whether it is in the appropriate range, the alignment angle of the alignment film The measurement method usually uses the principle of light reflection. Since the CF substrate is equipped with colored structural layers such as black matrix and color photoresist layer, it is easy to affect the light reflection, so it cannot be directly measured on the CF substrate, such as figure 1 As shown, the existing method for measuring the alignment angle of an alignment film is generally as follows: on a white glass substrate 100, several alignment films 200 arranged at intervals are formed on a white glass substrate 100 according to the manufacturing method of an alignment film on a CF substrate, and one or several alignment films 200 Select a number of measurement points 300 above, and measure the alignment angle of the alignment film 200 at the number of measurement points 300, and the measured alignment angle is the alignment angle of the alignment film on the CF substrate. However, due to This method is an indirect measurement, so the measurement results are not accurate enough, and it is impossible to realize real-time monitoring of products in the production process, and it is prone to defective batch products

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