Touch display device
US10890795B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2017 |
| Grant date | Jan 12, 2021 |
| Priority date | — |
| Expiry date | Mar 21, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/04146
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present disclosure provides a touch display device, including an upper substrate, a lower substrate, and a liquid crystal layer placed between the upper and lower substrates. The upper substrate includes a touch detection structure, and a plurality of pixel units arranged in a matrix. Each pixel unit includes a switch element and a pixel electrode. The lower substrate includes a common electrode and a reflection layer. The reflection layer is used for reflecting external light, and the external light refers to light from outside and sequentially emitting to the upper substrate and the liquid crystal layer, and then being incident to the reflection layer. In the touch display device, no whole or large area display electrode such as the common electrode is placed between the touch detection structure and the users. Thus, external touch signals will not be shielded, and the touch function can be better realized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.