Liquid crystal display with built-in touch screen having particles for pressure concentration
US7675580B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 7, 2007 |
| Grant date | Mar 9, 2010 |
| Priority date | — |
| Expiry date | Oct 14, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13394
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a liquid crystal display (LCD) panel with a built-in touch screen capable of maintaining touch sensitivity at a certain level regardless of touch circumstances, and an LCD having the LCD panel with a built-in touch screen. According to the present invention, there are provided an LCD panel with a built-in touch screen, comprising a first substrate; a second substrate positioned opposite to first substrate; a liquid crystal layer injected between first and second substrates; a sensing unit including a conductive column spacer and a conductive pad spaced apart from conductive column spacer by a predetermined interval to sense a touch point; and a plurality of pressure particles with certain hardness positioned on an outer surface of first substrate. Further, there is provided an LCD having the LCD panel with a built-in touch screen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.