Display device
US8174633B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2007 |
| Grant date | May 8, 2012 |
| Priority date | — |
| Expiry date | Aug 19, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D30/6729
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention is directed to reduction of a leak current of a TFT of a pixel caused by light from a backlight or external light to improve a display quality of a liquid crystal display device. The display device of the invention includes a plurality of pixels on a first substrate, where each of the pixels includes a gate line intersecting a semiconductor layer with a gate insulation film interposed therebetween, a drain line connected to a drain region through a first contact hole and covering an upper side of the semiconductor layer extending from an intersection, and a source electrode connected to a source region through a second contact hole and covering an upper side of the semiconductor layer extending from an intersection. The device further includes a light shield layer formed under the semiconductor layer with a buffer film interposed therebetween and shielding the semiconductor layer from light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.