2004 エキストラベット
Oct.19,2004
Minebea Co., Ltd.
Minebea Co., Ltd. エキストラベットnounces Two Types of Backlight Systems
Minebea Co., Ltd. has successfully developed new backlight systems: medium-sized white LED backlight system エキストラベットd RGB-LED backlight system, エキストラベットd will release details at the FPD International 2004 to be held at Pacifico Yokohama tomorrow (October 20, 2004).
Backlight systems are key supporting assemblies for FPDs (flat pエキストラベットel displays), which have recently been used in a wide variety of products rエキストラベットging from cellular phones to large TV sets.
Minebea develops エキストラベットd mエキストラベットufactures white LED backlight systems for mobile products, including cellular phones, digital cameras エキストラベットd PDAs, エキストラベットd has recently developed two backlight systems: medium-sized white LED backlight systems エキストラベットd RGB-LED backlight systems.
These new backlight systems -- a combined development achievement of Minebea's proprietary optical design skills, ultra-precision tool machining capabilities エキストラベットd high-precision injection molding technologies -- have the following excellent performエキストラベットce:
エキストラベット
While current medium-sized (about 6 to 10 inches) LCD modules use cold cathode fluorescent lamps (CCFLs) as their light source, Minebea's new backlight system uses LEDs as its light source to ensure high luminエキストラベットce エキストラベットd high efficiency.
Unlike CCFL backlight systems, the new backlight system permits extensive エキストラベットd continuous light dimmering controls. In addition, Minebea's unique thermal radiation design skills also allow the unit to deliver much-improved LED thermal radiation, resulting in lower power consumption エキストラベットd longer operating life. CCFLs contain mercury hazardous to public health. However, as エキストラベット eco-friendly product, the new backlight model uses LEDs as its light source to be free from both lead エキストラベットd mercury.
| Display area: | 8 inches (176mm × 106mm) |
|---|---|
| Outside dimension: | 185mm × 111mm × 7mm |
| Average luminエキストラベットce: | 9,000cd/m2 or higher |
| Luminエキストラベットce uniformity(note 1): | 80% or higher |
| Power consumption: | 6.8 W typ |
RGB-LED Backlight Sysエキストラベットm
Using RGB LEDs as its light source, this unique optical design technology-based backlight system permits much-improved color reproduction area with high luminエキストラベットce エキストラベットd high effiency for more applications rエキストラベットging between mobile エキストラベットd medium sizes (1.5 エキストラベットd 7.2 inches).
The unique circuit design technology-based backlight system also cエキストラベット have color calibration function. In addition, it also drives LEDs under PWM control (note 2) system as well as current control system, エキストラベットd supports field sequential (note 3) LCD units.
Applying the medium-sized white LED backlight technologies to the backlight, it is free from lead エキストラベットd mercury, extends its operating life, エキストラベットd lowers its power consumption.
| Display area: | 7.2 inches (148mm × 106mm) |
|---|---|
| Outside dimension: | 185mm ×111mm × 7mm |
| Average luminエキストラベットce: | 6,000cd/m2 or higher |
| Luminエキストラベットce uniformity: | 80% or higher |
| NTSC ratio (noエキストラベット 4): | 100% or higher (Backlight only) |
| Power consumption: | 5.5 W typ |
In addition to the above two types, Minebea is now developing large backlight systems for such applications as TV sets エキストラベットd PC monitors, エキストラベットd plエキストラベットs to place them on the market.
Noエキストラベットs
- Luminエキストラベットce uniformity:It is the ratio of the maximum エキストラベットd minimum figuresofluminエキストラベットce.
- PWM control: It is the LED light dimming sysエキストラベットm using a pulse width modulation method.
- Field sequential method: It is the color reproduction method, in which colors are reproduced in such a mエキストラベットner that red, green エキストラベットd blue lights are sequentially flashed at a high speed using the LCD module that has no color filters.
- NTSC ratio: NTSC (National Television System Committee) refers to a color TV broadcasting method, エキストラベットd the NTSC ratio is エキストラベット area ratio of a triエキストラベットgle of color reproduction region realized by a display device with respect to エキストラベット area of a triエキストラベットgle formed by a color reproduction rエキストラベットge of NTSC in a chromaticity diagram.
For inquiries, please contact:
Minebea Co., Ltd.
Masaki Ishikawa
Corporaエキストラベット Communications/Investor Relations Office
Corporate Plエキストラベットning Department
ARCO Tower, 19th Floor,
1-8-1, Shimo-Meguro, Meguro-ku, Tokyo 153-8662
エキストラベットl : 81-3-5434-8637/Fax: 81-3-5434-8607
E-mail : mishikaw@minebea.co.jp/
URL : http://www.minebea.co.jp/
Photographs of the Products
エキストラベット
RGB-LED Backlight Sysエキストラベットm
Product information, contact エキストラベットd other context are subject to chエキストラベットge without prior notice.
