Display substrate motherboard and manufacturing method thereof, display substrate and display apparatus
US11791278B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 24, 2021 |
| Grant date | Oct 17, 2023 |
| Priority date | — |
| Expiry date | Sep 24, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2223/54486
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
Provided are a display substrate motherboard and manufacturing method thereof, a display substrate and a display apparatus. The display substrate motherboard includes a substrate, a display substrate area on the substrate, and a mark area on the periphery of the display substrate area. The display substrate motherboard also includes a thin film transistor disposed in the display substrate area, a mark structure disposed in the mark area and a planarization layer disposed on one side of the thin film transistor away from the substrate, and the planarization layer includes a groove which is disposed at the corresponding position of the mark structure and extends along a direction close to the substrate, and an orthographic projection of the groove on the substrate covers an orthographic projection of the mark structure on the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.