发明名称 |
Fluorescent lamp providing uniform backlight illumination for displays |
摘要 |
A bent fluorescent lamp for backlighting a display providing uniform illumination. A fluorescent lamp is made from a tubular glass envelope having right angles formed therein. The right angles provide improved illumination of a plane surface for backlighting a liquid crystal display. The right angles eliminate dark regions in the illuminated surface. A right-angled bend is also formed at the ends of the fluorescent lamp. An electrode is positioned sufficiently far from a central portion of the lamp so that any dark spaces in the gas discharge of the fluorescent lamp, such as the Faraday dark space associated with a cathode of a lamp are not formed within the central portion. As a result, the central portion of the fluorescent lamp has a uniform brightness or intensity providing improved illumination for backlighting a liquid crystal display. The resulting more uniform illumination with less dark regions results in a more legible display and more accurate information being displayed. A method of forming a right-angled bend in a glass tube is also disclosed.
|
申请公布号 |
US6979101(B2) |
申请公布日期 |
2005.12.27 |
申请号 |
US20040886220 |
申请日期 |
2004.07.07 |
申请人 |
LCD LIGHTING, INC. |
发明人 |
SAUSKA CHRISTIAN;PIROVIC ARPAD |
分类号 |
H01J61/30;(IPC1-7):F21V9/16;F21K2/00;G01F1/133 |
主分类号 |
H01J61/30 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|