Edge-light backlight unit using optically patterned film with plural light-emitting diodes placed on side as light source

被引：8

作者：

Fujisawa, Katsuya

Onishi, Ikuo

Fujiwara, Yasufumi

机构：

[1] Kuraray Co Ltd, Tsukuba, Ibaraki 3050841, Japan

[2] Osaka Univ, Grad Sch Engn, Div Mat & Mfg Sci, Course Mat Sci & Engn, Osaka 5659871, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 2007年 / 46卷 / 36-40期

关键词：

backlight; edge-light backlight unit; liquid crystal display; optical pattern; optically patterned film; light-emitting diode;

D O I：

10.1143/JJAP.46.L933

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In an edge-light backlight unit using an optically patterned film (OPF backlight unit) with plural light-emitting diodes (LEDs) placed on the side as a light source, dark areas are easily generated between LEDs, because the OPF backlight unit mainly uses the total reflection induced by optical patterns formed on the OPF Such dark areas were eliminated by narrowing the interval between optical patterns between LEDs and widening it near LEDs. By adjusting the interval between optical patterns across the entire area additionally, a luminance distribution in a radiation plane suitable for liquid crystal displays (LCDs) was realized. Moreover, viewing-angle-dependent luminance distribution can be narrowed by adjusting the shape of the lens-shaped optical pattern. Thus, the OPF backlight unit using plural LEDs was shown to be suitable for small-area LCDs.

引用

页码：L933 / L935

页数：3

共 9 条

[1] Edge-light backlight unit using optically patterned film [J].

Fujisawa, Katsuya ;

Onishi, Ikuo ;

Fujiwara, Yasufumi .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 2007, 46 (01) :194-199

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