Detection method for display panel and detection device for display panel
US12175902B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 1, 2023 |
| Grant date | Dec 24, 2024 |
| Priority date | — |
| Expiry date | Dec 1, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A detection method and a detection device for a display panel are provided. The detection method includes: performing a detection operation on pixel-driving circuits. The detection operation includes applying a gate voltage and a source voltage to a gate and a source of each driving transistor, to turn on a driving transistor; and sampling voltages at the sources. The detection operation is repeated n times, where in each repetition, the gate voltage is the sum of the gate voltage in the initial detection operation and an accumulative addition of a difference between the gate voltage and the sampled voltage in the previous detection operation, with n being a positive integer. Based on the sampled voltage of the driving transistor of each pixel-driving circuit obtained in the n-th repetition of the detection operation, it is determined whether the threshold voltage of the driving transistor in the pixel-driving circuit is abnormal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.