Patent Number: 8,814,411

Title: Flat illumination device

Abstract: A flat illumination device is provided, and includes a frame, a light guide plate, and at least one light source. The frame includes an inner wall, wherein the inner wall has a reflective surface. The light guide plate is disposed in the frame, and has a first surface, a second surface opposite to the first surface, and at least one light incident surface adjoining the first and second surfaces. The first surface faces the reflective surface, and there is a distance between the first surface and the reflective surface. At least one pattern formed from mesh points or microstructures is disposed on at least one of the first surface and the second surface. The light source is disposed in the frame, and is adjacent to the light incident surface for providing light to the light guide plate.

Inventors: Chung; Yuan-Chen (Kaohsiung, TW), Chen; Wei-Hsuan (Kaohsiung, TW), Wang; Li-Fei (Kaohsiung, TW)

Assignee: Radiant Opto-Electronics Corporation

International Classification: F21V 7/04 (20060101)

Expiration Date: 8/26/12018