Display device including a connection board and a method for testing pad connection thereof
US11386819B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 5, 2020 |
| Grant date | Jul 12, 2022 |
| Priority date | — |
| Expiry date | Jun 5, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display device includes a display panel including first and second panel pads electrically connected to each other, a connection board including first and second connection board pads connected to the first and second panel pads, respectively, an output pad, and a driving circuit. The driving circuit includes a pull-up resistor connected between a first voltage terminal and a first node, and a comparator configured to compare a voltage at the first node with a reference voltage and to output a contact test signal corresponding to a comparison result to the output pad. The first connection board pad is electrically connected to the first node, and the second connection board pad is connected to a second voltage terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.