| 摘要 |
<P>PROBLEM TO BE SOLVED: To develop a frontlight type reflective liquid crystal display device for preventing external light reflection on a lower surface of an optical waveguide and a surface of a liquid crystal panel without the necessity of a reflection preventing layer, being excellent in brightness uniformity on a surface light emitting, contrast and brightness, and performing easy-to-see display. <P>SOLUTION: The display device is constituted by adhering the optical waveguide on a visual side of a liquid crystal cell (3) with a reflecting layer (32) via an adhesive layer (2), wherein the waveguide has a light emitting means composed of a plurality of recessions or protrusions (A) with an optical path conversion slant surface (A1) for reflecting an incident light from an incident side surface downward and emitting it from its lower surface on an upper surface of a transparent plate (1) with an upper and a lower surfaces and the incident side surface composed of a side surface between the upper and the lower surfaces. The display device is constituted by having at least a polarization plate (37) and a transparent layer (38) positioned at a position closer to the adhesive layer (2) than the polarization plate (37) and has a refractive index lower than that of the transparent plate (1) between the adhesive layer (2) and a liquid crystal cell, and disposing a light source (4) on the incident side surface. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
