Backlight module and method for manufacturing the same, and display device
US10769983B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2019 |
| Grant date | Sep 8, 2020 |
| Priority date | — |
| Expiry date | Jan 27, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G3/3426
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present disclosure relates to a backlight module, a method for manufacturing the backlight module, and a display device. The backlight module includes a substrate, a plurality of LED chips, and a first film having a plurality of channels. Each channel is filled with a channel filling portion. A refractive index n1 of the first film is smaller than a refractive index of the channel filling portion is n2. The first film has a first region and second region. Channels in the first region are astigmatism holes for diverging the light having a high intensity and channels in the second region are light-converging holes for converging the light having a low intensity, thereby alleviating or eliminating the starry phenomenon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.