LIQUID CRYSTAL DISPLAY DEVICE

摘要

In a liquid crystal display device, a TFT substrate and a counter substrate are bonded by a sealing material, with a liquid crystal interposed between the two substrates. An alignment film has a two-layer structure of a lower alignment film not subjected to photo alignment treatment and an upper alignment film subjected to photo alignment treatment and contacting the liquid crystal. A hollow with an increased film thickness is formed in an end portion of the lower alignment film. An end portion of the upper alignment film is determined by the hollow of the lower alignment film. The material, process conditions, or other conditions of the lower alignment film for easy control of outer end dimensions can be selected to easily control the profile of the alignment film as a whole. Thus, it is possible to avoid the reduction of reliability due to the reduction of the bonding strength between the sealing material and the alignment film.

主权项

1. A liquid crystal display device comprising:
a TFT substrate having a display area with pixels arranged in a matrix form, each pixel having a pixel electrode and a TFT, in which an alignment film is formed; a counter substrate disposed opposite the TFT substrate; and a liquid crystal interposed between the TFT substrate and the counter substrate, wherein the alignment film is formed by a lower alignment film and an upper alignment film that is formed on the lower alignment film and brought into contact with the liquid crystal, wherein the upper alignment film is subjected to photo alignment treatment, wherein a hollow with an increased film thickness is formed in an end portion of the lower alignment film, and wherein an end portion of the upper alignment film is present on the side closer to the display area than the hollow of the lower alignment film.