Liquid crystal display panel with spherical spacer and a concave portion opposite to the spacer
View Patent ↗A spherical spacer is used as a spacer member defining a gap, and is fixed to a color filter substrate. A concave portion coming in contact with a part of the spherical spacer is formed in a position in a TFT substrate, the position being opposite to the spherical spacer. The substrates are bonded with each other by engaging the spherical spacer and the concave portion with each other.
1. A liquid crystal display panel comprising:
a pair of substrates opposite to each other, which hold a liquid crystal layer therebetween;
a substantially spherical spacer fixed to a first one of the substrates; and
a concave portion formed in a position in a second one of the substrates, the position being opposite to the spacer.
2. The liquid crystal display panel according to claim 1 , wherein the pair of the substrates are fixed in a state where the spacer and the concave portion are engaged with each other.
3. The liquid crystal display panel according to claim 2 , wherein the concave portion has a bottom surface substantially parallel to a plane of the second substrate and a side wall portion substantially inclined at a predetermined angle to the plane.
4. The liquid crystal display panel according to claim 2 , wherein
the concave portion has a side wall portion inclined at a predetermined angle to a plane of the second substrate, and
a cross-section of the concave portion in a direction substantially perpendicular to the plane is V-shaped.
5. The liquid crystal display panel according to claim 2 , wherein the concave portion has a stepped shape in which an area of an aperture of the concave portion gradually becomes smaller toward a bottom surface thereof.
6. The liquid crystal display panel according to claim 2 , wherein
an insulating film is formed in the second substrate, and
the concave portion is formed by removing a part of the insulating film.
7. The liquid crystal display panel according to claim 6 , wherein
the concave portion penetrates the insulating film, and
a surface of an underlying member located under the insulating film is exposed to the outside.
8. The liquid crystal display panel according to claim 2 , wherein
the insulating film is a photosensitive organic film, and
at least a part of the concave portion is formed in a curved surface.
9. The liquid crystal display panel according to claim 2 , wherein the spacer is fixed to the first substrate with an adhesive member.
10. The liquid crystal display panel according to claim 2 , wherein
a black matrix layer shielding light from entering interstices between a plurality of pixels is formed on the first substrate, and
the spacer is fixed over the black matrix layer.
11. The liquid crystal display panel according to claim 2 , wherein,
an insulating film is formed in the second substrate, and
a gate insulating film is formed under the insulating film, between the insulating film and the second substrate,
wherein the concave portion penetrates the insulating film, and
a surface of the gate insulating film located under the insulating film is exposed to the outside.