Display device for reducing chromaticity difference in white color and method for manufacturing the same
US7733445B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2006 |
| Grant date | Jun 8, 2010 |
| Priority date | — |
| Expiry date | Jun 9, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K71/611
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Chromaticity difference is decreased, which is caused by the difference of transmissivity when a light passes through a transparent conductive film to constitute pixels. Optical film thickness of each of transparent conductive films PXR, PXG, and PXB to constitute pixels (a product “nd” of refractive index “n” and film thickness “d”) is varied for each of color filters RF, GF, and BF for each pixel. The transparent conductive film is prepared by coating an ink (produced by dispersing fine particles of a transparent conductive film material such as ITO in a binder) via nozzle of an ink jet device, and then, by baking. Film thickness is controlled by the coating amount of the ink, and refractive index is controlled by volume ratio of the fine particles of conductive material to the binder contained in the transparent conductive film in consideration of those refractive indices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.