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43. Prospects and challenges of mini‐LEDand micro‐LEDdisplays

Author

Huang, Yuge, Tan, Guanjun, Gou, Fangwang, Li, Ming‐Chun, Lee, Seok‐Lyul, and Wu, Shin‐Tson

Abstract

We review the emerging mini/micro–light‐emitting diode (LED) displays featuring high dynamic range and good sunlight readability. For mini‐LED backlit liquid crystal displays (LCDs), we quantitatively evaluate how the device contrast ratio, local dimming zone number, and local light profile affect the image quality. For the emissive mini/micro‐LED displays, the challenges of ambient contrast ratio and size‐dependent power efficiency are analyzed. Two figure‐of‐merits are proposed for optimizing the optical and electrical performances of mini/micro‐LED displays. We review the emerging mini/micro‐LED displays featuring high‐dynamic range and good sunlight readability. For mini‐LED backlit LCDs, we quantitatively evaluate how the device contrast ratio, local dimming zone number, and local light profile affect the image quality. For the emissive mini/micro‐LED displays, we propose two figure‐of‐merits for optimizing ambient contrast ratio and power efficiency.

Published
2019
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44. 4‐2: Distinguished Student Paper:High Efficiency Color‐Converted Micro‐LED Displays

Author

Gou, Fangwang, Hsiang, En-Lin, Tan, Guanjun, Lan, Yi-Fen, Tsai, Cheng-Yeh, and Wu, Shin-Tson

Abstract

With funnel‐tube array, the optical efficiency of the color‐converted micro‐LED display is improved by ~3X, while the crosstalk is eliminated. After optimization of the taper angle, the ambient contrast ratio is also improved due to higher light intensity.

Published
2019
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47. 44‐1: Distinguished Student Paper:Motion‐blur‐free LCD for High Resolution Virtual Reality Displays

Author

Gou, Fangwang, Chen, Haiwei, Li, Ming-Chun, Lee, Seok-Lyul, and Wu, Shin-Tson

Abstract

A new liquid crystal display device with fast response time, high transmittance, and low voltage for virtual reality is reported. When driven at 90Hz with 17% duty ratio, the motion picture response time is 1.5 ms, similar to CRT, leading to indistinguishable motion blur. Moreover, this device enables high resolution density because only one thin‐film transistor per pixel is needed and it has a built‐in storage capacitor.

Published
2018
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48. Motion‐blur‐free LCDfor high‐resolution virtual reality displays

Author

Gou, Fangwang, Chen, Haiwei, Li, Ming‐Chun, Lee, Seok‐Lyul, and Wu, Shin‐Tson

Abstract

A new liquid crystal display device with fast response time, high transmittance, and low voltage for virtual reality is reported. When driven at 90 Hz with 17% duty ratio, the motion picture response time is 1.5 ms, which is comparable with cathode‐ray tube, leading to indistinguishable motion blur. Moreover, this device enables high‐resolution density because only one thin‐film transistor per pixel is needed and it has a built‐in storage capacitor. A new liquid crystal display device with fast response time, high transmittance, and low voltage for high‐resolution virtual reality is reported. When driven at 90 Hz with 17% duty ratio, the motion picture response time is 1.5 ms, which is comparable with CRT, leading to indistinguishable motion blur.

Published
2018
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