Display backlight module including light guide plate having bottom surface with groove proximate LEDs
US11016236B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2019 |
| Grant date | May 25, 2021 |
| Priority date | — |
| Expiry date | Dec 19, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G3/3406
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A backlight module includes a housing including a bottom plate and side plates, forming a receiving cavity; a backlight source received in the receiving cavity, and including a plurality of LED lights each having a light-emitting center portion for projecting light in a first direction; and a light guide plate received in the receiving cavity, and including a light receiving edge surface facing the backlight source and extending in a second direction, a light-exiting top surface, and a bottom surface. First regions are included on a portion of the bottom surface of the light guide plate close to the light receiving edge surface in one-to-one correspondence to the light-emitting center portion of each LED light of the plurality of LED lights, each of the plurality of first regions having at least one first groove arranged in the first direction and extending in the second direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.