Liquid crystal display panel and liquid crystal display device
View Patent ↗A liquid crystal display panel has a drive substrate and an opposing substrate disposed parallel to each other by way of a seal member provided with a liquid crystal injection inlet. A liquid crystal layer is sealed between the two substrates. Apertures are provided in the portion formed on the periphery of the pixel area of the smoothed film that is formed on the surface of the drive substrate, and an orientation film is formed so that at least part of the peripheral edge portion is positioned inside the apertures. Thereby, the liquid crystal injection time can be reduced and the panel can be set in a narrow frame, and the wiring and peripheral drive circuits are not liable to be damaged.
1. A liquid crystal display panel comprising:
a first substrate;
a second substrate disposed facing said first substrate;
a plurality of insulation films provided on at least one substrate selected from said first and second substrates;
a liquid crystal layer sealed between said first and second substrates; and
an orientation film which is disposed on the surface of said liquid crystal layer side of said at least one substrate, and which orients liquid crystal molecules of said liquid crystal layer,
wherein the plurality of insulation films on which said orientation film is formed is provided with a recess across the entire area or locally in the portion corresponding to the peripheral edge portion of said orientation film, and at least a part the peripheral edge portion of said orientation film is formed inside said recess.
2. The liquid crystal display panel according to claim 1 , comprising pixel circuits for applying voltage to said liquid crystal layer, which is disposed on said first substrate, and one of said plurality of insulation films is provided between said orientation film and said pixel circuits.
3. The liquid crystal display panel according to claim 2 , wherein thin film transistors are disposed in said pixel circuits.
4. The liquid crystal display panel according to claim 2 , wherein said plurality of insulation films has an interlayer insulation film and a smoothed film whose thickness is greater than that of said interlayer insulation film formed on said interlayer insulation film, and wherein said recess includes apertures that are formed in said smoothed film in at least the portion of the area directly below the peripheral edge portion of said orientation film.
5. The liquid crystal display panel according to claim 4 , wherein a plurality of wires electrically connected to said pixel circuits are disposed on said first substrate, said wires are formed in the area directly below the peripheral edge portion of said orientation film, and said apertures are formed in portions other than directly above said wires.
6. The liquid crystal display panel according to claim 2 , wherein a drive circuit for driving said pixel circuits is disposed on said first substrate, and said plurality of insulation films is also formed on said drive circuit.
7. The liquid crystal display panel according to claim 1 , wherein said second substrate is provided with a color layer on the surface side on which said liquid crystal layer is formed and a topcoat layer for covering said color layer, and said orientation film is formed on said topcoat layer.
8. The liquid crystal display panel according to claim 7 , wherein an aperture is formed in said topcoat layer in at least a portion of the area directly below the peripheral edge portion of said orientation film.
9. A liquid crystal display device having a liquid crystal display panel, the liquid crystal display panel comprising:
a first substrate;
a second substrate disposed facing said first substrate;
a plurality of insulation films provided on at least one substrate selected from said first and second substrates;
a liquid crystal layer sealed between said first and second substrates; and
an orientation film which is disposed on the surface of said liquid crystal layer side of said at least one substrate, and which orients the liquid crystal molecules of said liquid crystal layer,
wherein the plurality of insulation films on which said orientation film is formed is provided with a recess across the entire area or locally in the portion corresponding to the peripheral edge portion of said orientation film, and at least a part the peripheral edge portion of said orientation film is formed inside said recess.
10. The liquid crystal display device of claim 9 , wherein said liquid crystal display panel comprises pixel circuits for applying voltage to said liquid crystal layer, which is disposed on said first substrate, and one of said plurality of insulation films is provided between said orientation film and said pixel circuits.
11. The liquid crystal display device of claim 10 , wherein thin film transistors are disposed in said pixel circuits.
12. The liquid crystal display device of claim 10 , wherein said plurality of insulation films has an interlayer insulation film and a smoothed film whose thickness is greater than that of said interlayer insulation film formed on said interlayer insulation film, and wherein said recess includes apertures that are formed in said smoothed film in at least the portion of the area directly below the peripheral edge portion of said orientation film.
13. The liquid crystal display device of claim 12 , wherein a plurality of wires electrically connected to said pixel circuits are disposed on said first substrate, said wires are formed in the area directly below the peripheral edge portion of said orientation film, and said apertures are formed in portions other than directly above said wires.
14. The liquid crystal display device of claim 10 , wherein a drive circuit for driving said pixel circuits is disposed on said first substrate, and said plurality of insulation films is also formed on said drive circuit.
15. The liquid crystal display device of claim 9 , wherein said second substrate is provided with a color layer on the surface side on which said liquid crystal layer is formed and a topcoat layer for covering said color layer, and said orientation film is formed on said topcoat layer.
16. The liquid crystal display device of claim 15 , wherein an aperture is formed in said topcoat layer in at least a portion of the area directly below the peripheral edge portion of said orientation film.