EDGE-LIT BACKLIGHT MODULE
First Claim
1. An edge-lit backlight module, comprising a back panel in a rectangular shape, a plurality of light emitting diodes (LEDs) and a front panel, wherein the LEDs are symmetrically arranged on two opposite sides of the back panel, and the front panel is covered on the back panel and the LEDs, and a light path of an emitted light of each LED and a normal form an included angle between 0°
- ˜
90°
which is divided sequentially into a first angular zone, a second angular zone and a third angular zone, such that lights emitted from the LEDs are projected directly and reflected from the back panel onto the front panel to provide a light extraction efficiency with a uniform luminous intensity, characterized in that the back panel has a first light portion, a second light portion and a third light portion sequentially arranged from a center position of the back panel towards two opposite sides of the back panel, and the first light portion, the second light portion and the third light portion are inclined planes or cambers for reflecting light in the first angular zone, light in the second angular zone and light in the third angular zone respectively.
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Accused Products
Abstract
Disclosed is an edge-lit backlight module having a rectangular back panel with a reflective microstructure, and a first light portion with an inclined plane or a camber is provided for reflecting lights emitted from a plurality of LEDs and with a relatively smaller normal included angle, and a second light portion is provided for reflecting a light with a slightly greater included angle, and a third light portion is provided for reflecting the light with the greatest included angle to guide lights of different intensities to different paths and project the lights to every position of a front panel, so as to achieve a light extraction efficiency with a uniform distribution of luminous intensity of an LED light source.
15 Citations
14 Claims
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1. An edge-lit backlight module, comprising a back panel in a rectangular shape, a plurality of light emitting diodes (LEDs) and a front panel, wherein the LEDs are symmetrically arranged on two opposite sides of the back panel, and the front panel is covered on the back panel and the LEDs, and a light path of an emitted light of each LED and a normal form an included angle between 0°
- ˜
90°
which is divided sequentially into a first angular zone, a second angular zone and a third angular zone, such that lights emitted from the LEDs are projected directly and reflected from the back panel onto the front panel to provide a light extraction efficiency with a uniform luminous intensity, characterized in that the back panel has a first light portion, a second light portion and a third light portion sequentially arranged from a center position of the back panel towards two opposite sides of the back panel, and the first light portion, the second light portion and the third light portion are inclined planes or cambers for reflecting light in the first angular zone, light in the second angular zone and light in the third angular zone respectively. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification