TWI258038B - A direct type backlight module - Google Patents
A direct type backlight module Download PDFInfo
- Publication number
- TWI258038B TWI258038B TW93141646A TW93141646A TWI258038B TW I258038 B TWI258038 B TW I258038B TW 93141646 A TW93141646 A TW 93141646A TW 93141646 A TW93141646 A TW 93141646A TW I258038 B TWI258038 B TW I258038B
- Authority
- TW
- Taiwan
- Prior art keywords
- optical coupling
- light source
- coupling lens
- backlight module
- diffuser film
- Prior art date
Links
Abstract
A direct type backlight module used in liquid crystal display sequentially includes an optical coupling lens, diffuser film, a cathode ray light source, and a reflective bottom plate. The optical coupling lens, a cylindrical and Fresnel type, controls intensity distribution of light emitted from a cathode ray light source, the reflective bottom plate reflects light onto the diffuser film, the diffuser film in turn scatters the light and direct it onto the optical coupling lens, thereby providing a highly uniform and bright light source with a simple structure that can be manufactured with low cost.
Description
1258038 2 2. 照度(fl ux/mj1258038 2 2. Illumination (fl ux/mj
第吋頁 1258038Page 1258038
第5C圖 第λ頁 1258038Figure 5C Page λ 1258038
第5D圖5D picture
第5F圖 第A頁Figure 5F Page A
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW93141646A TWI258038B (en) | 2004-12-31 | 2004-12-31 | A direct type backlight module |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW93141646A TWI258038B (en) | 2004-12-31 | 2004-12-31 | A direct type backlight module |
Publications (2)
Publication Number | Publication Date |
---|---|
TW200622420A TW200622420A (en) | 2006-07-01 |
TWI258038B true TWI258038B (en) | 2006-07-11 |
Family
ID=37765147
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW93141646A TWI258038B (en) | 2004-12-31 | 2004-12-31 | A direct type backlight module |
Country Status (1)
Country | Link |
---|---|
TW (1) | TWI258038B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW200951566A (en) * | 2009-07-29 | 2009-12-16 | Global Lighting Technologies Taiwan Inc | Method of improving backlight module dark band |
-
2004
- 2004-12-31 TW TW93141646A patent/TWI258038B/en active
Also Published As
Publication number | Publication date |
---|---|
TW200622420A (en) | 2006-07-01 |
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