Technical Name Smart Power-saving Display Pixel Array Technology with Low Latency Applicable for AR/VR Wearable Devices
Project Operator Department of Photonics, National Yang Ming Chiao Tung University
Project Host 劉柏村
A power-saving memory-in-pixel (MIP) display technology was proposed, in which an innovative CBRAM memory was embedded in a display pixel to provide the image signal to the pixel, especially in a static display period, instead of repeatedly feeding it from the peripheral drivers. In addition to the power-saving, the MIP integrated with the TFT array can increase the pixel aperture ratio compared with SRAM-embedded architecture,decrease the layout area of peripheral drivers. Furthermore, the high-conductivity copper wiring as electrodesinterconnects was integrated into the TFT backplane array, which can enhance the speed of signal transmissionreduce the image delay, beneficial for high-resolution VR/AR device applications.
Scientific Breakthrough
Compared with the traditional SRAM-embedded pixel circuit composed of 6 TFT elements, the present technology proposes a single non-volatile copper conductive bridge memory (CBRAM) embedded in the TFT display pixel array to provide static image informationeffectively reduce both the frame ratethe power consumption of display peripheral driving circuits. Besides, the copper interconnection is integrated into the innovative pixel architecture to achieve low latencyhigh reliability, beneficial for the development of wearable VR/AR devices with high-qualityhigh-resolution image displays.
Industrial Applicability
With the advent of the Metaverse-related industry with market size of 800 billion US dollars in 2024, the development of non-volatile CBRAM memory-embedded pixel arrays with high-conductivity copper interconnection can effectively reduce the power consumption of display electronicsaccelerate the signal transmission rate. The technical results cover innovative Ga-free InWZnO semiconductor with low material cost, novel electronic devices,pixel array architecture, creating the functional diversity of advanced display products. The proposed technology is indispensable for the realization of smart, energy-saving,high-speed VR/AR displays, which can achieve the sustainable development goals (SDGs) of the display industry.
Keyword Metaverse Virtual reality (VR)/ Augment Reality (AR) Wearable display electronics Memory-in-pixel array technology Low signal latency Integration of active and passive device Power-saving system on panel Enhancement of the pixel aperture ratio technol Ultra-high resolution Gallium-free and low-cost transparent amorphou
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  • Chih-Chieh Hsu
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