Method for manufacturing a liquid crystal display device with optically compensated bend mode
A method for manufacturing a substrate of a flat panel display device is disclosed. The method includes following steps: providing a substrate having patterned transparent electrode thereon; and forming an alignment layer on the surface of the transparent electrode. The formed alignment layer includes a homeotropic alignment film and a homogeneous alignment film adjacent to the homeotropic alignment film. Moreover, the homeotropic alignment film is formed utilizing printing on or on a periphery of to the homogeneous alignment film. Through this method, the flat panel display device can be manufactured without increasing the quantity of the mask cycles, and without a complex process of gradation exposure. Moreover, the problem resulted from multiple rubbing can be reduced, and the cost for manufacturing can be decreased.
1. A method for manufacturing a substrate of a flat panel display device, comprising the following steps:
providing a substrate having a patterned transparent electrode thereon; and
forming an alignment layer on the surface of the patterned transparent electrode, wherein the alignment layer comprises a homeotropic alignment film and a homogeneous alignment film adjacent to the homeotropic alignment film,
wherein the homeotropic alignment film is formed on or on a periphery of the homogeneous alignment film by printing.
2. The method as claimed in claim 1 , wherein the homeotropic alignment film is formed on the homogeneous alignment film by ink-jet printing.
3. The method as claimed in claim 1 , wherein the homeotropic alignment film is formed on the periphery of the homogeneous alignment film by ink-jet printing.
4. The method as claimed in claim 1 , wherein the homeotropic alignment film is formed on the homogeneous alignment film by roller printing.
5. The method as claimed in claim 1 , wherein the homeotropic alignment film is formed on the periphery of the homogeneous alignment film by roller printing.
6. The method as claimed in claim 1 , wherein the homogeneous alignment film is formed by printing or photolithography.
7. The method as claimed in claim 1 , wherein the homeotropic alignment film is formed over an opaque area of the substrate.
8. The method as claimed in claim 5 , wherein the homeotropic alignment film makes the nematic liquid crystal molecules to tilt at a pretilt angle larger than 60 degrees.
9. The method as claimed in claim 1 , wherein the homogeneous alignment film is formed over an opaque area or a transparent area of the substrate.
10. The method as claimed in claim 1 , wherein a material of the homogeneous alignment film is polyimide.
11. The method as claimed in claim 1 , wherein a material of the homeotropic alignment film is polyimide.
12. The method as claimed in claim 1 , wherein the substrate of the flat panel display device further comprises a color filter.
13. The method as claimed in claim 1 , wherein the substrate of the flat panel display device further comprises a thin film transistor.
14. The method as claimed in claim 1 , wherein the substrate of the flat panel display device further comprises a color filter and a thin film transistor.