| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a technology for providing a uniform and high luminance image quality, in a liquid crystal display apparatus using an LED back light. <P>SOLUTION: This liquid crystal display apparatus has a liquid crystal display 3 and a plurality of light emitting diodes 7 as a directly underlaying type back light which is disposed on a rear surface of the liquid crystal display so as to irradiate lights upon the liquid crystal display, wherein a light guidance member 5 formed of a light transmissive member is provided at least corresponding to each one or more of light emitting diodes, and the light guidance member 5 is formed in a cylindrical configuration, and reflection surfaces are defined on each of outer wall surfaces 53 and inner wall surfaces 52 of the cylindrical light guidance member so as to reflect the lights from the light emitting diodes by these reflection surfaces, and thereby guiding them onto a side of the liquid crystal display. <P>COPYRIGHT: (C)2009,JPO&INPIT |
