Liquid crystal display device and manufacturing method thereof
View Patent ↗In a liquid crystal display device small in the size and having a narrow frame, an alignment film can be coated by ink jet printing, by coating a rapidly drying peripheral alignment film 109 in the shape of a frame to a TFT substrate 100 having a display region having pixel electrode 107 and a peripheral region thereof by ink jet printing, and then coating a display region alignment film 108 drying slower but excellent in the leveling effect by ink jet printing. While the display region alignment film 108 dries slowly, since the peripheral alignment film 109 formed to the periphery functions as a stopper, the shape of the alignment film can be defined accurately, thereby enabling to prevent lowering of the adhesion of the seal member 20 under the effect of the alignment film. This can be applied also on the side of the counter substrate 200.
1. A liquid crystal display device including a TFT substrate having a display region and a peripheral region, the display region having pixels arranged in a matrix, each pixel having a pixel electrode and a TFT; and a counter substrate opposed to the TFT substrate, the counter substrate having a color filter formed at a position corresponding to a position at which the pixel electrode is formed above the TFT substrate, the TFT substrate being bonded to the counter substrate by way of a seal member in a seal portion located at the periphery,
wherein a first alignment film is formed in the display region of the TFT substrate, and a second alignment film is formed at the peripheral region outside of the display region and at the outside of the first alignment film, the second alignment film being not formed in the display region,
wherein the first alignment film is in contact with the second alignment film; and
wherein the thickness of the second alignment film is larger than the thickness of the first alignment film.
2. The liquid crystal display device according to claim 1 , wherein the second alignment film is in contact with the seal member.
3. A liquid crystal display device including a TFT substrate having a display region and a peripheral region, the display region having pixels arranged in a matrix, each pixel having a pixel electrode and a TFT; and a counter substrate opposed to the TFT substrate, the counter substrate having a color filter formed at a position corresponding to a position at which the pixel electrode is formed above the TFT substrate, the counter substrate having a display region and a peripheral region, the TFT substrate being bonded to the counter substrate by way of a seal member in a seal portion located at the periphery;
wherein a first alignment film is formed in the display region of the TFT substrate, and a second alignment film is formed at the peripheral region outside of the display region and at the outside of the first alignment film, the second alignment film being not formed in the display region, the first alignment film being in contact with the second alignment film;
wherein a first alignment film is formed in the display region of the counter substrate, a second alignment film is formed at the peripheral region outside of the display region and at the outside of the first alignment film, the second alignment film is not formed in the display region, and the first alignment film is in contact with the second alignment film; and
wherein the thickness of the second alignment film is larger than the thickness of the first alignment film.