Electro-optical display device
US5668567A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 17, 1995 |
| Grant date | Sep 16, 1997 |
| Priority date | — |
| Expiry date | Nov 17, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G3/3662
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electro-optical display device in accordance with the present invention has a plurality of picture elements arranged in a matrix form, and each of the picture elements is composed of an electro-optical material layer and a switching element which is electrically connected to the material layer in a series form. A data voltage is written on the electro-optical material layer via the switching element for a writing period. A reference voltage is applied to the other end of a connection to which the data voltage is applied, and the reference voltage is inverted alternately together with the data voltage for each predetermined period, by which the electro-optical material layer is ac driven. The value of the data voltage is controlled to coincide approximately with that of the reference voltage for the periods other than the writing period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.