Liquid crystal display device with tablet
US5929834A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 1996 |
| Grant date | Jul 27, 1999 |
| Priority date | — |
| Expiry date | Apr 18, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G3/3611
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A liquid crystal display device with a tablet reduced in apparatus thickness and enhanced in display visibility. The liquid crystal display device mainly composed of a liquid crystal display upper glass plate, a liquid crystal, and a liquid crystal display lower glass plate is connected with a tablet on the upper glass plate, the tablet being mainly composed of a film having a first transparent electrode. A second transparent electrode arranged on the upper glass plate is made function as both an electrostatic capacity detecting electrode and a display electrode. Namely, display is made by the second transparent electrode and a third transparent electrode and a coordinate on the tablet is detected by the first transparent electrode and the second transparent electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.