Backlight module and light guide plate thereof
US9983346B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Jul 22, 2016 |
| Grant date | May 29, 2018 |
| Priority date | — |
| Expiry date | Jul 26, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0202
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A backlight module includes a light source unit for providing light, a light guide plate including a plate body having a light entrance surface and extending along an X-Y plane and at least one opening in the plate body and extending along a Z axis, and an optical layer on one side of the light guide plate. The light enters the light guide plate from the light entrance surface and travels substantially along the X-Y plane. A cross section of the opening on the X-Y plane is a taper shape with a base region and a cone shape region extending from one side of the base region near the light source unit. The optical layer has a through hole aligned and communicating with the base region. A projection of the cone shape region along the Z axis on the optical layer is at least partially outside the through hole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.