BdDisplays LLC

Orlando, FL, United States

BdDisplays LLC

Orlando, FL, United States

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Cho J.-H.,University of Central Florida | Cho J.-H.,BdDisplays LLC | Bass M.,University of Central Florida | Bass M.,BdDisplays LLC | And 6 more authors.
IEEE/OSA Journal of Display Technology | Year: 2011

Up converters combined with GaAs based semiconductor light sources are described as having potential for emissive displays with very large color gamut and very high resolution. To enable such displays the efficiency and temporal response of the up converting materials were studied and are reported. High efficiency is shown to be possible by proper preparation and utilization of the up converters. Up conversion displays can operate with refresh rates as high as 240 Hz. Operation as either a visible or near infrared display is possible. © 2006 IEEE.


Hageman W.,Kansas State University | Cho J.-H.,University of Central Florida | Cho J.-H.,BdDisplays LLC | Bass M.,University of Central Florida | And 6 more authors.
IEEE/OSA Journal of Display Technology | Year: 2011

Optical fibers are described that emit visible light along their length when particulate up-converters in the cladding are excited by light from semiconductor light sources propagating in the core and leaking into the cladding. These eye-catching fibers can be made in almost any color. They can enhance the display of safety gear, enliven novelty clothing displays, make more spectacular theatrical costumes and find use in a wide range of specialty fabrics for other novel display applications. © 2010 IEEE.


Grant
Agency: National Science Foundation | Branch: | Program: SBIR | Phase: Phase I | Award Amount: 100.00K | Year: 2009

This Small Business Innovation Research (SBIR) Phase I project will develop a new type of red, green, and blue (RGB) backlight for liquid crystal displays (LCD) that can provide low cost, high efficiency, high image quality, and low voltage. While LCDs dominate computers, communication, and entertainment, they remain limited in their image quality and efficiency by the lack of a low cost, high quality RGB backlight. This lack of RGB backlighting is due to the market barrier of the high cost associated with the available technologies. The proposed project investigates a transformative approach to LCD backlighting using laser up-conversion that can reach very low cost by incorporating new materials, photonic device structures, and integration techniques at the backlight subsystem level. In addition, the Phase I project enables a dramatic improvement in the LCD system level performance through color and 2D modulation with increased resolution, color and image contrast, and elimination of the need for expensive LCD color filters. If successful one of the key benefits of this outcome is that the increased performance will reduce the cost displays systems. The LCD has become the dominant technology for information display in education, science, health care, government, security, and entertainment. Few other technologies have had as broad an impact on the U.S. and world societies. The LCD impact comes from its multibillion-dollar world market and in its diverse range of applications. This SBIR effort has as its goal furtherance of LCD displays by developing low cost RGB backlighting. It combines an important opportunity for technology advancement in a market sector important to the U.S. economy with a collaborative effort in basic science and new materials with university researchers to achieve this goal. The new technology offers the opportunity for rapid development and commercialization of new university developed concepts. In addition, the technology may find new applications in automotive lighting, indicator lamps, and other display technologies. The research effort targets integration of new materials and devices at the subsystem level, with a clear technology path to innovation for LCDs in each of the leading market sectors.

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