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Making microLEDs on 200 mm silicon
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COMPOUND SEMICONDUCTOR
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2018-11-29
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IT소재부품, 해외동향, 전자정보디바이스, LED, IT부품정보, IT부품정보 네트워크, 부품, GreenIT,
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FLAWS hamper the two incumbent display technologies, which are based on liquid crystals and organic LEDs. Those that feature liquid crystals are compromised by the complex architecture: each individual sub-pixel consists of a backlight, polarizers, a matrix of liquid crystal, and colour filters. This leads to a low efficiency. With OLEDs, efficiency is addressed, but at the expense of lifetime and reliability.
A far more promising option for making a display is an array of microLEDs. Each of its pixels is formed with an LED with dimensions of less than 30 μm that has the strengths of its bigger brother. Those merits include a high brightness and contrast ratio, a low power consumption, a fast response time, a long lifetime, a wide range of operating temperature and a wide viewing angle.