Led backlight for flat panel display

Details Led backlight for flat panel display Led backlight for flat panel display

G - Physics

02

B

G02B 6/00 (2006.01)

Patent

CA 2621124

The backlight for a flat panel display preferably includes a light guide having a shape complementary to a visible surface of a flat panel display positioned beneath the display. The light guide has a first side edge and has an array of light emitting diodes (LEDs) arranged on a flexible printed circuit board and positioned in registry against the side edge of the light guide. A second array of LEDs may be arranged along a second side edge of the light guide to enhance the visibility and uniformity of illumination to the flat panel display.

Cette invention concerne un dispositif de rétro-éclairage destiné à un écran plat comprenant de préférence un guide lumineux, doté d~une forme complémentaire à une surface visible d~un écran plat, placé au-dessous de l~écran. Le guide lumineux possède un premier bord latéral et une rangée de diodes électroluminescentes (LED) disposée sur une carte de circuit imprimé souple et placée de manière à coïncider avec le bord latéral du guide lumineux. Une seconde rangée de LED peut être disposée le long d~un second bord latéral du guide lumineux pour améliorer la visibilité et l~uniformité d~éclairage de l~écran plat.

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