Touch panel, touch control method thereof, and touch control apparatus
US11347093B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 15, 2017 |
| Grant date | May 31, 2022 |
| Priority date | — |
| Expiry date | Sep 25, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04106
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A touch panel includes a first substrate, a liquid crystal layer, a second substrate, a first optical detection layer, and a black matrix. The first optical detection layer is over a light-emitting surface of the liquid crystal layer and includes a plurality of first optical detection components, whose orthographic projections on the first substrate are within an orthographic projection of the black matrix. A touch control can be determined based on a change of a first electric signal converted by each first optical detection component based on an intensity of a light transmitting through the liquid crystal layer. The light can be an infrared light. A plurality of second optical detection components can be further disposed over a light-incident surface of the liquid crystal layer to pairingly correspond to, and utilized to determine a touch control along with, the plurality of first optical detection components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.