Hon Hai Precision Industry Co., Ltd.

Tsinghua University

Qiao-Feng Tan

Guo-Fan Jin

Shou-Shan Fan

Jun Zhu

He Fang Zhang

Ying-Bai Yan

Xing-Peng Yang

Di Feng

A light guide plate includes a light discharge surface, a light diffusing surface, a light incident surface, and a plurality of scattering dots. The light diffusing surface is located opposite to the light discharge surface. The light diffusing surface has a first part and a second part. The first part is adjacent to a light source. The light incident surface intersects with the light discharge surface and the light diffusing surface. The scattering dots within the first part are arranged in the form of a plurality of concentric arcs, and the scattering dots within the second part are arranged in the form of a plurality of lines.

Light guide plates and backlight module

An exemplary light guide plate () includes: a light incident portion () for receiving a light; a light reflecting portion () for reflecting the light input through the light incident portion; and a light emitting portion () opposite to the light reflecting portion, for outputting the reflected light. The light incident portion includes a first diffractive optical element () located thereat. The first diffractive optical element includes a plurality of protrusions () each having a curved surface, with the protrusions being arranged symmetrically opposite to each other across a central axis of symmetry of the first diffractive optical element. The light emitting portion may include a second diffractive optical element () located thereat. The second diffractive optical element includes a plurality of elongate protrusions, with the protrusions being arranged symmetrically opposite to each other across a central axis of symmetry of the second diffractive optical element.

Light guide plate and surface light source using same

Growing community of inventors

Beijing, China

Qiao-Feng Tan