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학술대회 High-resolution Spatial Light Modulator on Glass for Digital Holographic Display
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양종헌, 최지훈, 피재은, 황치영, 김기현, 이원재, 김희옥, 최경희, 김용해, 황치선
SPIE OPTO 2019 (SPIE 10943), pp.1-7
18MF1200, 디지털 홀로그래픽 테이블탑형 단말 기술 개발, 김진웅
A spatial light modulator (SLM) is the key component for a digital holographic display system. It requires both ultrahigh- resolution fine pixel integration and large-area panel to get a wide viewing angle and large realistic 3D images. Because these requirements collide with each other, it is very difficult to develop the digital holography system satisfying the standard of the general public. Unlike conventional SLMs, which are based on small size semiconductor ICs, we have developed larger size, highresolution SLM on glass (SLMoG) using both semiconductor and display fabrication technologies. 1-μm channel length oxide TFTs are integrated for pixel switching and the liquid crystal (LC) of high refractive index anisotropy was used to modulate the phase of incident light. Multiple high-speed interface boards and large channel driver ICs are used to drive large size holographic image data. 2.16-inch 16K SLMoG panel with 3-μm horizontal pixel pitch was successfully developed for the first time. Without the aid of additional instruments, it was possible to observe a simple 3D objects with the naked eye. For even wider viewing angle and larger size SLMoG, the proof of concept SLMoG panel for still image hologram with smaller pixel pitches was developed to evaluate cross-talk between adjacent LC pixels.
KSP 제안 키워드
3D Image, 3D object, Channel Length, Cross Talk, Display System, High-resolution, Holography system, Image data, Key Components, Liquid crystal, Naked eye