Liquid crystal display device
View Patent ↗At a corner of a TFT substrate in which sealants are coated overlapping each other, a phenomenon that the width of the sealants is increased and protrude to the display region is prevented. An organic passivation film is formed as far as the outside of the display region. A groove-like organic passivation film removed portion is formed surrounding the display region. Since the sealants are coated overlapping each other at the corner, when a TFT substrate and a counter substrate are superposed at a predetermined gap, the width of the groove-like organic passivation film removed portion is made larger at the corner than the side in order to prevent the sealant from extending. Since an excessive sealant is absorbed in the groove-like organic passivation film removing portion of a larger width at the corner, the sealant can be prevented from protruding to the inside of the display region.
1. A liquid crystal display device comprising:
a TFT substrate including a region for display and having an organic passivation film formed thereover;
a counter substrate disposed with a sealant formed in a seal portion between the TFT substrate and the counter substrate; and
liquid crystals put between the TFT substrate and the counter substrate;
wherein the organic passivation film is formed as far as the outside of the display region of the TFT substrate, the organic passivation film having a groove-like organic passivation film removed portion surrounding the display region in the seal portion, the width of the groove-like organic passivation film removed portion being larger at the corner than at the side,
a peripheral circuit is formed in the seal portion of the TFT substrate, and
the gap between the TFT substrate and the counter substrate in the seal portion is defined by a pillar spacer formed on the counter substrate and a pedestal of the organic passivation film formed over the TFT substrate.
2. The liquid crystal display device according to claim 1 , wherein
the width of the groove-like organic passivation film removed portion is three times or more larger at the corner than at the side.
3. The liquid crystal display device according to claim 2 , wherein
an inorganic insulation film is formed over the organic passivation film.
4. The liquid crystal display device according to claim 3 , wherein
a plurality of the groove-like organic passivation film removed portions are formed, the width of the inner groove-like organic passivation film removed portions being larger at the corner than at the side.