LCD having color filters on TFT substrate wherein transparent conductive film is patterned using back exposure with UV light filtered to remove wavelengths above 365 nm
US6556271B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2000 |
| Grant date | Apr 29, 2003 |
| Priority date | — |
| Expiry date | May 15, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/136222
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method of manufacturing a color liquid crystal display element. The method includes the steps of: forming coloring layers composed of a plurality of colors on a transparent substrate on which a thin film transistor structure, a gate line and a data line are formed; forming a transparent conductive film over the entire transparent substrate on which the coloring layers are formed; coating the entire surface of the transparent conductive film with a negative resist; exposing the negative resist to a light using the gate line and the data line as a photomask, the light being emitted from a light source facing a back side of the transparent substrate, the light substantially having wavelength bands excluding 390 nm to 440 nm; developing and baking the exposed negative resist; and etching and removing the transparent conductive film in a portion where the negative resist is removed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.