Liquid crystal display device having electromagnetic type touch panel
US7755616B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 9, 2003 |
| Grant date | Jul 13, 2010 |
| Priority date | — |
| Expiry date | Aug 3, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0488
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An LCD device having an electromagnetic (EM) type touch panel is disclosed, which includes an electromagnetic sensor inside an LCD panel. The EM type touch panel has a thin profile and can be fabricated through a simplified manufacturing process. The LCD device includes an LCD panel having first and second substrates facing each other, and a liquid crystal layer between the first and second substrates; an EM sensor having X-axis and Y-axis transparent electrode coils formed in one body with any one of the first and second substrates in the LCD panel; a backlight unit below the LCD panel; and a controller below the backlight, the controller controlling the EM sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.