Hon Hai Precision Industry Co., Ltd.

Ming-Hsuan Liu

Ga-Lane Chen

Charles Chengyea Leu

Tai-Cheng Yu

Mi-Chien Chen

Michael Lin

A surface light source unit () includes a light source (), a light guide plate (), a reflective plate () and a diffusing plate (). The light guide plate includes a light incidence surface () adjacent to the light source for receiving light beams, an emission surface () for emitting the light beams, a light reflection surface () opposite to the emission surface and a plurality of diffusion dots () formed on the light reflection surface. The diffusion dots contain a plurality of light scattering particles () having substantially global surfaces. The surface light source unit provides high uniform illumination for a liquid crystal display panel.

Light guide plate with diffusion dots having scattering particles and surface light source unit incorporating the light guide plate

A light guide plate () includes a transparent plate (), and a plurality of diffusing protrusions (). The transparent plate includes an emitting surface (), and a bottom surface () opposite to the emitting surface. The diffusing protrusions are distributed evenly on the emitting surface of the transparent plate, and are integrated with the transparent plate. The diffusing protrusions are hemispherical or sub-hemispherical, and a diameter of each diffusing protrusion is in the range from 10 &#x3bc;m&#x2dc;50 &#x3bc;m. The light guide plate provides high emitting brightness and uniformity. The diffusing protrusions can diffuse light beams emitting from the emitting surface of the transparent plate, in order to achieve a plane light source having even brightness. The present Invention also discloses a method for fabricating the light guide plate.

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Tu-Chen, Taiwan

Ming-Hsuan Liu