FIELD: physics.
SUBSTANCE: backlight unit (49) of a display device (69), having a liquid crystal display panel (59), has a base (41), a diffusing plate (43) which is supported by the base, and a point light source for irradiating the diffusing plate with light. The point light source has a light-emitting diode (22) mounted on a mounting substrate (21). A plurality of light-emitting diodes covered by divergent lenses (24) are provided. Optical axes (OA) of the divergent lenses are inclined relative the diffusing plate, and the divergent lenses, having different inclinations of optical axes, are placed randomly on the base. The divergent lenses, having optical axes that are inclined in opposite directions, are paired and the pairs are arranged in a matrix.
EFFECT: reduced non-uniformity of luminance and hue.
25 cl, 12 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| LIGHTING UNIT, DISPLAY DEVICE AND TV RECEIVER | 2010 |
|
RU2500951C2 |
| BACKLIGHT DEVICE, DISPLAY DEVICE AND TELEVISION RECEIVER | 2010 |
|
RU2503882C2 |
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RU2499183C2 |
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| LIGHTING DEVICE, DISPLAY DEVICE AND TELEVISION SET | 2010 |
|
RU2502916C2 |
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|
RU2511720C2 |
| CARRIER PIN, LIGHTING DEVICE, DISPLAY DEVICE AND TELEVISION RECEIVING DEVICE | 2010 |
|
RU2504713C2 |
| LIGHTING DEVICE, DISPLAY DEVICE AND TELEVISION RECEIVER | 2010 |
|
RU2497040C2 |
| LIGHTING DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE | 2009 |
|
RU2470215C2 |
| LIGHTING DEVICE, DISPLAY DEVICE AND TELEVISION SET | 2010 |
|
RU2502915C2 |
