TWI258038B - A direct type backlight module - Google Patents

A direct type backlight module Download PDF

Info

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
Application number
TW93141646A
Other languages
Chinese (zh)
Other versions
TW200622420A (en
Inventor
Shuang-Chao Chung
Ji-Bin Horng
Hoang-Yan Lin
Chun-Chuan Lin
Chung-Jen Ou
Original Assignee
Ind Tech Res Inst
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ind Tech Res Inst filed Critical Ind Tech Res Inst
Priority to TW93141646A priority Critical patent/TWI258038B/en
Publication of TW200622420A publication Critical patent/TW200622420A/en
Application granted granted Critical
Publication of TWI258038B publication Critical patent/TWI258038B/en

Links

Landscapes

  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)

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

TW93141646A 2004-12-31 2004-12-31 A direct type backlight module TWI258038B (en)

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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
TW200622420A (en) 2006-07-01

Similar Documents

Publication Publication Date Title
TW539889B (en) Backlight unit of bi-directional irradiation for liquid crystal display device
US9864122B2 (en) Diffusing of direct backlight for a display panel
TWI404893B (en) An illuminating device without a light guide board
US7540648B2 (en) Diffusion plate assembly
US20150253491A1 (en) Lcd backlight display
CN105579764A (en) Illumination device and display device
TW556028B (en) Modular LED backlight assembly
US7226200B2 (en) Light guiding device with two opposite light emitting surfaces and backlight module using the same
US20080068864A1 (en) Backlight module
KR20070040012A (en) Direct type backlight device
US20080144335A1 (en) Light guide plate and backlight module including the same
US7708445B2 (en) Light guide device and backlight module using the same
TWI258038B (en) A direct type backlight module
JP2009163016A (en) Thin type external illumination signboard
CN100507675C (en) Backlight component
TWI296063B (en) Backlight unit and housing thereof
US20070002552A1 (en) Light guide polygonal cones in direct type backlight module
JP4334270B2 (en) LCD panel backlight device
KR101705356B1 (en) Backlight unit and liquid crystal display device using the same
KR101104259B1 (en) Prism Sheet Used for Backlight Device
JP3160338U (en) Illuminated picture frame
CN204573756U (en) Backlight module and display unit
KR20060127609A (en) Prism Sheet Used for Backlight Device
TWI282463B (en) The diffusing plate and the back light source device
KR200244860Y1 (en) Lighting equipment

Legal Events

Date Code Title Description
MK4A Expiration of patent term of an invention patent