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Proceedings Paper

Fabrication of LED full-color display matrix with small pixel
Author(s): Jing Li; Bin Xue; Hua Yang; Lili Liu; Haizhong Xie; Yanrong Pei; Pengzhi Lu; Guohong Wang; Junxi Wang; Jinmin Li
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Paper Abstract

With the development in material growth, device fabrication and packaging of LEDs, emission spectral of LED is able to cover the visible spectrum. In addition to the well-known lighting applications of LED, display is also one of the important applications of LED. In contrast with LCD, LEDs display has better contrast ratio, higher response rate, etc., which makes LEDs along with other self-illumination technologies an ideal candidate in making display panel. With the popularization of HD and Ultra HD standard, display panel with better image quality is needed. The number of pixels of the panel needs to be increased and the size of each pixel needs to be minimized. In this paper, we prepared a LED full-color display panel based on a 32×32 LED matrix with typical pixel size of 0.5mm. LED full-color display array with small pixel was obtained by mounting red LEDs, green LEDs and blue LEDs directly onto an isolating substrate such as sapphire . In addition, the substrate has metalized pads and connection before the matrix was connected to control unit. The control line and the column data line are prepared on the substrate, and there is an effective electrical insulation layers between them. The isolation layers consists of a SiO2 layer of 1000nm and polyimide layer of 3000nm. Polyimide as an important electrical insulating layer, we study some properties of it, such as :PI amination rate as a function of the curing temperature, PI resistivity as a function of the curing temperature and the punction electric field intensity of PI as a function of the film thickness of PI.

Paper Details

Date Published: 17 September 2015
PDF: 6 pages
Proc. SPIE 9571, Fourteenth International Conference on Solid State Lighting and LED-based Illumination Systems, 95710Y (17 September 2015); doi: 10.1117/12.2187643
Show Author Affiliations
Jing Li, Institute of Semiconductors (China)
Bin Xue, Institute of Semiconductors (China)
Hua Yang, Institute of Semiconductors (China)
Lili Liu, Institute of Semiconductors (China)
Haizhong Xie, Institute of Semiconductors (China)
Yanrong Pei, Institute of Semiconductors (China)
Pengzhi Lu, Institute of Semiconductors (China)
Guohong Wang, Institute of Semiconductors (China)
Junxi Wang, Institute of Semiconductors (China)
Jinmin Li, Institute of Semiconductors (China)

Published in SPIE Proceedings Vol. 9571:
Fourteenth International Conference on Solid State Lighting and LED-based Illumination Systems
Matthew H. Kane; Jianzhong Jiao; Nikolaus Dietz; Jian-Jang Huang, Editor(s)

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