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2007•Optics & Optoelectronic TechnologyRequires access

Design of LED Light Source Transfer to Line Light Source for LCD Backlight Module

YE Zhi-ting

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Abstract

By extending light guide plate of liquid crystal display backlight module for 5 mm forward,we designed a light expanding area.When LED light source passed this area,twice light expansion was obtained.So that the LED spot light source can be transfered to line light source of CCFL approximately. A 3-inched liquid crystal display panel was simulated.The result shows that the light output uniformity of the light guide plate is over 85%.

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What this paper is about

By extending light guide plate of liquid crystal display backlight module for 5 mm forward,we designed a light expanding area.When LED light source passed this area,twice light expansion was obtained.So that the LED spot light source can be transfered to line light source of CCFL approximately. A 3-inched liquid crystal display panel was simulated.The result shows that the light output uniformity of the light guide plate is over 85%.

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Available abstract

By extending light guide plate of liquid crystal display backlight module for 5 mm forward,we designed a light expanding area.When LED light source passed this area,twice light expansion was obtained.So that the LED spot light source can be transfered to line light source of CCFL approximately. A 3-inched liquid crystal display panel was simulated.The result shows that the light output uniformity of the light guide plate is over 85%.

Key concepts: Backlight, Light source, Liquid-crystal display, Light guide, Optics, Light-emitting diode, Line (geometry), Optoelectronics

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