Display device comprising a recessed portion that is formed with at least one convex portion at a bottom of the recessed portion and wherein the recessed portion faces a columnar spacer
View Patent ↗A display device includes a first substrate having organic and alignment films, a second substrate adhered to the first substrate by a sealant which surrounds a pixel region, a columnar spacer formed on the second substrate defining a distance between the first substrate and the second substrate, and a recessed portion formed in the organic film of the pixel region, the recessed portion facing to the columnar spacer. The recessed portion has a convex portion at a bottom of the recessed portion, and a height of a top of the convex portion from the first substrate is lower than a height of an upper surface of the organic film from the first substrate. A thickness of an alignment film on the convex portion is smaller than a thickness of the bottom of the recessed portion, and a top of the columnar spacer is in contact with the convex portion.
1. A display device comprising:
a first substrate having an organic film and an alignment film;
a second substrate adhered to the first substrate by a sealant which surrounds a pixel region;
a columnar spacer formed on the second substrate defining a distance between the first substrate and the second substrate; and
a recessed portion formed in the organic film of the pixel region, the recessed portion facing to the columnar spacer;
wherein the recessed portion is formed with at least one convex portion at a bottom of the recessed portion, and a height of a top of the at least one convex portion from the first substrate is lower than a height of an upper surface of the organic film from the first substrate;
wherein a thickness of an alignment film on the at least one convex portion is smaller than a thickness of the bottom of the recessed portion;
wherein a top of the columnar spacer is in contact with the at least one convex portion formed on the recessed portion; and
wherein an area at the bottom of the recessed portion is larger than an area at the top of the columnar spacer.
2. A display device according to claim 1 , wherein at least two convex portions are provided, a top end of the columnar spacer is in contact with the at least two convex portions formed at the bottom of the recessed portion.
3. A display device according to claim 1 , wherein an angle of inclination at an inclined portion of a cross sectional shape of the at least one convex portion is at least 3 degrees and no greater than 45 degrees or less.
4. A display device according to claim 3 , wherein the angle of inclination at the inclined portion of the cross sectional shape of the at least one convex portion is at least 6 degrees and no greater than 25 degrees.
5. A display device according to claim 1 , wherein a distance between the first substrate and the second substrate is smaller in the pixel region than a distance between the first substrate at the second substrate at an area outside of the sealant.
6. A display device according to claim 1 , wherein liquid crystal is filled between the first substrate and the second substrate sealed by the sealant.