Display unit
US5757054A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 16, 1996 |
| Grant date | May 26, 1998 |
| Priority date | — |
| Expiry date | Sep 16, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13454
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention solves problems as follows: a problem that, since light for displaying enters into a semiconductor substrate, carrier induced by light occurs in the semiconductor substrate, potential of the substrate fluctuates, and hence display characteristics become worse; a problem that, in the semiconductor substrate, voltages are applied to the peripheral driving circuits so as to operate the peripheral driving circuits formed in a single-crystal area, which makes display characteristics worse by the voltages being conducted to the display area through the substrate; and a problem that, in case potentials of adjacent pixels greatly differ, the difference locally changes. For this purpose, in a display unit including an active matrix substrate having an image display portion being provided with a plurality of switches and a driving circuit for supplying driving signals to the switches around the image display portion, an opposing substrate opposing the active matrix substrate and having a transparent electrode, and a liquid crystal material between both of the active matrix substrate and the opposing substrate, heavily doped impurity regions having impurity density heavi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.