Liquid crystal display with selectively placed barriers
View Patent ↗An LCD (Liquid Crystal Display) is provided in which shavings of an alignment layer are accumulated only in regions surrounding a TFT (Thin Film Transistor) in a TFT substrate in a concentrated manner. A barrier made of an insulating material is formed in a manner to cover portions surrounding the TFT including step portions of the TFT on a back channel in the TFT substrate and to be disposed at a place on a downstream side in a rubbing direction.
1. A liquid crystal display comprising:
a liquid crystal put between a thin film transistor substrate and a facing substrate;
an alignment layer formed in a manner to cover said thin film transistor substrate in said TFT substrate; and
a barrier formed in a portion surrounding said thin film transistor substrate on a downstream side in a rubbing direction of said alignment layer.
2. The liquid crystal display according to claim 1 , wherein said barrier is formed so as to have an angle relative to said rubbing direction.
3. The liquid crystal display according to claim 1 , wherein said barrier is made up of an insulating material.
4. The liquid crystal display according to claim 3 , wherein said insulating material is a photosensitive resin.
5. The liquid crystal display according to claim 1 , wherein said barrier is so formed that its aperture is disposed in a place facing opposite to an upstream side in said rubbing direction of said alignment layer and in a manner to form a shape of a framework surrounding all surfaces of a square semiconductor layer except said aperture.
6. The liquid crystal display according to claim 1 , wherein said barrier is formed in a manner to form a shape of a character “” made up of three sides of a square semiconductor layer except one side facing opposite to an upstream side in said rubbing direction of said alignment layer.
7. The liquid crystal display according to claim 1 , wherein said barrier is formed in a manner to form a shape of a letter “L” being opened toward an upstream side of said rubbing direction of said alignment layer.
8. The liquid crystal display according to claim 1 , wherein said barrier is made up of a color layer.
9. The liquid crystal display according to claim 1 , wherein said barrier is made up of a plurality of kinds of stacked color layers.
10. The liquid crystal display according to claim 1 , wherein said barrier is formed on a passivation film covering said TFT.
11. The liquid crystal display according to claim 10 , wherein said barrier is formed under said passivation film.
12. A liquid crystal display comprising:
a liquid crystal put between a thin film transistor substrate and a facing substrate;
an alignment layer formed in a manner to cover a thin film transistor in said thin film transistor substrate; and
wherein said thin film transistor is formed on a transparent insulating substrate and a position of only a gate electrode making up said thin film transistor is made high, by using an insulation film grown on said transparent insulating substrate, the insulation film having a width equal to a width of the gate electrode.
13. A liquid crystal display comprising:
a liquid crystal put between a thin film transistor substrate and a facing substrate;
an alignment layer formed in a manner to cover said thin film transistor substrate in said TFT substrate; and
a barrier formed in a portion surrounding said thin film transistor substrate on a downstream side in a rubbing direction of said alignment layer,
wherein said insulating material is a photosensitive resin.