Coretronic Corporation

Cheng-Yi Tseng

Tzeng-Ke Shiau

Chung-Yang Fang

Ping-Yen Chen

Yi-Cheng Lin

Ying-Hsiang Chen

Wei-Chun Yang

Shih-Wei Liu

Chia-Liang Kang

A backlight module includes a light guide element including first optical microstructures and second optical microstructures. An angle value of an angle of the first optical microstructures is V1. When the second optical microstructures are respectively recessed into or protrude from a bottom surface, a projection of each sub-optical microstructure on a reference plane has a peak point closest or to farthest from a light emitting surface and a first valley point and a second valley point farthest from or closest to the light emitting surface, a height difference between the peak point and the first valley point or the second valley point is ΔH, a length difference between the peak point and the first valley point or the second valley point is ΔL, and tan(ΔH/ΔL) is V2, where V2>0 and V2≤0.5·V1.

Light guide element and backlight module

A light source module includes a light guide plate, a light-emitting element, and first and second prism sheets. One of the light-emitting surface and the bottom surface of the light guide plate has strip-shaped microstructures. The bottom surface has bottom microstructures, and the angle between the first surface of each bottom microstructure and the bottom surface is 1° to 17°. The first prism sheet is disposed on the light-emitting surface and between the light-emitting surface and the second prism sheet and includes first prism rods. The second prism sheet includes second prism rods. The aspect ratio of the strip-shaped microstructure is greater than 0.2. The angle between the maximum luminance direction of the light from the light-emitting surface and the normal direction of the light-emitting surface is less than 70°. The light-emitting angle range is less than 40°. A display device including the light source module is also provided.

Light source module and display device

Growing community of inventors

Hsin-Chu, Taiwan

Cheng-Yi Tseng