发明名称 |
ILLUMINATION DEVICE AND LIQUID CRYSTAL DISPLAY |
摘要 |
It is an object of the invention to provide a technique capable of suppressing variations in luminance in the vicinity of a light entrance surface of a light guide plate. An illumination device includes a point light source, and a light guide plate having a side surface serving as a light entrance surface opposed to the point light source, and a main surface serving as a light exit surface. The light entrance surface of the light guide plate is provided with unevenness formed by arraying at predetermined pitches a plurality of protrusions each projecting from the light entrance surface and extending in a direction perpendicular to the light exit surface. Each of the top surface and the bottom surface of the unevenness is provided with a plurality of micro protrusions each extending in the direction perpendicular to the light exit surface and having a height smaller than the above protrusion. |
申请公布号 |
US2012127400(A1) |
申请公布日期 |
2012.05.24 |
申请号 |
US201113297708 |
申请日期 |
2011.11.16 |
申请人 |
YUUKI AKIMASA;ITOGA KENJI;IWASAKI NAOKO;KOKUSHO TAKAFUMI;TSUCHIYAMA YUJI;SAKAI SEIJI;MITSUBISHI ELECTRIC CORPORATION |
发明人 |
YUUKI AKIMASA;ITOGA KENJI;IWASAKI NAOKO;KOKUSHO TAKAFUMI;TSUCHIYAMA YUJI;SAKAI SEIJI |
分类号 |
G02F1/1335;F21V8/00 |
主分类号 |
G02F1/1335 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|