OSRAM Opto Semiconductors has introduced the new TOPLED Compact 4520, making ultra-flat displays possible. This LED is one of the smallest screen backlights and the first LED in this class to use UX:3 chip technology, so it is the preferred source for pulse mode, can load very high currents, and contributes to extreme Realistic picture.
More and more flat displays require ultra-thin backlighting and high-quality light, which are unique features of the new TOPLED Compact 4520. With a brightness of 35lm (150mA) and an efficiency of 72lm/W, this miniature light source is suitable for applications where light is injected into the light guide (up to 2mm) from one or both sides and covers more than 100% of the RGB color gamut. Because of its excellent linearity between current and brightness, the UX:3 chip is brighter in all high current pulse modes than all LEDs using other chip technologies.
Winfried Schwedler, LED backlighting marketing manager at OSRAM Opto Semiconductors in Germany, said: "The TOPLED Compact 4520 is designed for ultra-flat displays. Its extreme brightness and high current pulse modes help to deliver high-definition, high-contrast images without A wiping effect is produced." By blackening or dimming individual segments of the image, the pulse mode provides a higher contrast for dark images and avoids the fast moving image to produce a wiping effect. To do this, simply turn off part of the backlight temporarily. Because the speed is so fast that the human eye cannot capture the dark phase, the entire picture presented is bright and consistent in color.
Like other members of the TOPLED family, the TOPLED Compact 4520 is also available in a flat package and does not require any lens, making it ideal for single-sided or double-side beaming of light guides. The proven TOPLED package measures 4.5x2.0x0.8mm and is highly reliable for high volume production.
Regardless of the size of the screen, the TOPLEDCompact4520 delivers crisp, high-contrast images.
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