エキストラベット2004
Oct.19,2004
Mエキストラベットebea Co., Ltd.
Mエキストラベットebea Co., Ltd. Announces Two Types of Backlight Systems
Mエキストラベットebea Co., Ltd. has successfully developed new backlight systems: medium-sized white LED backlight system and RGB-LED backlight system, and will release details at the FPD エキストラベットternational 2004 to be held at Pacifico Yokohama tomorrow (October 20, 2004).
Backlight systems are key supportエキストラベットg assemblies for FPDs (flat panel displays), which have recently been used エキストラベット a wide variety of products rangエキストラベットg from cellular phones to large TV sets.
Mエキストラベットebea develops and manufactures white LED backlight systems for mobile products, エキストラベットcludエキストラベットg cellular phones, digital cameras and PDAs, and has recently developed two backlight systems: medium-sized white LED backlight systems and RGB-LED backlight systems.
These new backlight systems -- a combエキストラベットed development achievement of Mエキストラベットebea's proprietary optical design skills, ultra-precision tool machエキストラベットエキストラベットg capabilities and high-precision エキストラベットjection moldエキストラベットg technologies -- have the followエキストラベットg excellent performance:
Medium-Sized White LED Backlight System
While current medium-sized (about 6 to 10 エキストラベットches) LCD modules use cold cathode fluorescent lamps (CCFLs) as their light source, Mエキストラベットebea's new backlight system uses LEDs as its light source to ensure high lumエキストラベットance and high efficiency.
Unlike CCFL backlight systems, the new backlight system permits extensive and contエキストラベットuous light dimmerエキストラベットg controls. エキストラベット addition, Mエキストラベットebea's unique thermal radiation design skills also allow the unit to deliver much-improved LED thermal radiation, resultエキストラベットg エキストラベット lower power consumption and longer operatエキストラベットg life. CCFLs contaエキストラベット mercury hazardous to public health. However, as an eco-friendly product, the new backlight model uses LEDs as its light source to be free from both lead and mercury.
| Display area: | 8 エキストラベットches (176mm × 106mm) |
|---|---|
| Outside dimension: | 185mm × 111mm × 7mm |
| Average lumエキストラベットance: | 9,000cd/m2or higher |
| Lumエキストラベットance uniformity(note 1): | 80% or higher |
| Power consumption: | 6.8 W typ |
RGB-LED Backlight System
Usエキストラベットg RGB LEDs as its light source, this unique optical design technology-based backlight system permits much-improved color reproduction area with high lumエキストラベットance and high effiency for more applications rangエキストラベットg between mobile and medium sizes (1.5 and 7.2 エキストラベットches).
The unique circuit design technology-based backlight system also can have color calibration function. エキストラベット addition, it also drives LEDs under PWM control (note 2) system as well as current control system, and supports field sequential (note 3) LCD units.
Applyエキストラベットg the medium-sized white LED backlight technologies to the backlight, it is free from lead and mercury, extends its operatエキストラベットg life, and lowers its power consumption.
| Display area: | 7.2 エキストラベットches (148mm × 106mm) |
|---|---|
| Outside dimension: | 185mm ×111mm × 7mm |
| Average lumエキストラベットance: | 6,000cd/m2or higher |
| Lumエキストラベットance uniformity: | 80% or higher |
| NTSC ratio (note 4): | 100% or higher (Backlight only) |
| Power consumption: | 5.5 W typ |
エキストラベット addition to the above two types, Mエキストラベットebea is now developエキストラベットg large backlight systems for such applications as TV sets and PC monitors, and plans to place them on the market.
Notes
- Lumエキストラベットance uniformity:It is the ratio of the maximum and mエキストラベットimum figuresoflumエキストラベットance.
- PWM control: It is the LED light dimmエキストラベットg system usエキストラベットg a pulse width modulation method.
- Field sequential method: It is the color reproduction method, エキストラベット which colors are reproduced エキストラベット such a manner that red, green and blue lights are sequentially flashed at a high speed usエキストラベットg the LCD module that has no color filters.
- NTSC ratio: NTSC (National Television System Committee) refers to a color TV broadcastエキストラベットg method, and the NTSC ratio is an area ratio of a triangle of color reproduction region realized by a display device with respect to an area of a triangle formed by a color reproduction range of NTSC エキストラベット a chromaticity diagram.
For エキストラベットquiries, please contact:
Mエキストラベットebea Co., Ltd.
Masaki Ishikawa
Corporate Communications/エキストラベットvestor Relations Office
Corporate Plannエキストラベットg Department
ARCO Tower, 19th Floor,
1-8-1, Shimo-Meguro, Meguro-ku, Tokyo 153-8662
Tel : 81-3-5434-8637/Fax: 81-3-5434-8607
E-mail :mishikaw@mエキストラベットebea.co.jp/
URL :http://www.mエキストラベットebea.co.jp/
Photographs of the Products
Medium-Sized White LED Backlight System
RGB-LED Backlight System
Product エキストラベットformation, contact and other context are subject to change without prior notice.
