Circuit board, display module, and display device
US12087191B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2022 |
| Grant date | Sep 10, 2024 |
| Priority date | — |
| Expiry date | May 7, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2201/10128
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A circuit board, a display module, and a display device are provided. The circuit board includes: a base substrate including a first surface and a second surface opposite to each other; bonding pads on the first surface; test pads electrically connected to the bonding pads and disposed on the second surface; a test auxiliary structure on the second surface; and a metal layer on the second surface. The test auxiliary structure overlaps with the test pads along a first direction which is a direction perpendicular to the first surface and the second surface of the base substrate; and the metal layer includes a metal structure for transmitting a first signal and the test auxiliary structure is insulated from the metal structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.