2014年4月28日星期一

this LCD module achieves its white light by mixing light generated

The global provider of enterprise and consumer biometric fingerprint solutions. UPEK authentication hardware and software are integrated into laptops from the world's top five largest PC makers, as well as USB flash drives, external hard disk drives, and mobile phones from leading manufacturers. UPEK's ecosystem of over 100 hardware and software partners enables strong authentication solutions for market verticals including healthcare, banking, education, and government.last week announced the development of a new amorphous-silicon color thin-film-transistor (TFT) liquid crystal led high bay light module that achieves an ultra-wide color gamut for 100 percent of the Adobe? RGB color range by incorporating a newly developed LED light-source unit into the backlight system and a newly developed color filter.

The white LED that serves as the light source for the backlight unit in this LCD module achieves its white light by mixing light generated through the irradiation of red, green, and blue phosphors with light from a near-ultraviolet LED chip (excitation), making it superior to traditional white LEDs in terms of color-rendering properties. Combining these newly developed white LEDs with newly developed color filters, optimized for this application, makes it possible to reproduce a wider range of colors covering 100 percent of the Adobe? RGB color range, which is generally beyond the reach of conventional standard white LEDs.

In recent years, there has been an increase in customer demand for LCD displays using white LEDs as light sources in backlight units due to the many benefits achieved with LED backlight systems versus cold-cathode-fluorescent-(CCFLs)-based backlights. Such benefits include smaller module dimensions, lighter-weight designs, and reduced power consumption. The LEDs are also mercury free and do not require the use of high-voltage circuitry, allaying concerns related to safety and the generation of harmonic currents and high-frequency noise. The LEDs offer superior vibration and shock resistance as well as superior characteristics with respect to low-temperature startup and a wider dimming range.

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