Display panels with touch functions and fault detection method thereof
US9563313B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 5, 2015 |
| Grant date | Feb 7, 2017 |
| Priority date | — |
| Expiry date | May 24, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/12
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A display panel with touch function and a fault detection method are disclosed. The display panel includes a display component and a touch component sharing common electrodes. The common electrodes are divided into a plurality of areas arranged in a matrix. The common electrode within each area connects to a touch chip via detection circuits. The display panel further comprises at least two switch control circuits for controlling the detection circuits corresponding to a plurality of areas in a predetermined manner such that the common electrode within each area and the common electrode within an adjacent area are controlled by different switch control circuits. When the display component is in a display state, at least two switch control circuits are configured to set up a common voltage for the common electrode in the plurality of areas. The display states of the display component in the plurality of areas are detected to determine a malfunction of the detection circuit. In this way, the TP circuit detection may be performed in an easier and more efficient way.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.