Display panel and manufacturing method thereof, and display device
US11835751B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 2020 |
| Grant date | Dec 5, 2023 |
| Priority date | — |
| Expiry date | Jan 25, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2201/50
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A display panel and a manufacturing method thereof, and a display device. The display panel includes a light guide plate, an array substrate, a liquid crystal layer between the light guide plate and the array substrate, a plurality of light-extracting gratings located on one side of a light exit surface of the light guide plate, and a transparent protection layer between a film layer where the light-extracting gratings are located and the light guide plate. The light guide plate includes a plurality of light-extracting port areas, and transparent areas besides the light-extracting port areas; each light-extracting port area is provided with one light-extracting grating; the protection layer is at least provided on the transparent areas, and the protection layer is configured to prevent the light guide plate in the transparent areas from being excessively etched to form a plurality of depressions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.