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Design and Fabrication of Fine-Pitch Pixelated-Addressed Micro-LED Arrays on Printed Circuit Board for Display and Communication Applications
- Source :
- IEEE Journal of the Electron Devices Society, Vol 5, Iss 1, Pp 90-94 (2017)
- Publication Year :
- 2017
- Publisher :
- IEEE, 2017.
-
Abstract
- In this paper, we report the design and fabrication of fine-pitch and pixelated-addressed micro-light emitting diode (LED) arrays with emission wavelengths of red (R), green (G), blue (B), and infrared (IR). The arrays have a resolution of $8\times 8$ with monochromatic LED chips directly bonded to custom-designed printed circuit boards to form pixelated matrix. R, G, B, and IR micro-LED arrays with a pixel pitch of 1 mm were demonstrated. Sequential row scanning and multiple columns programming is performed by two CMOS-based application specific integrated circuit chips providing constant-sinking current and forward voltage for each pixel of the micro-LED arrays. The uniformity of operating current and forward voltage of the micro-LED pixels was measured with 1.94% coefficient of variation. The micro-LED pixel has much shorter rising time and higher response frequency than those of regular packaged blue and white LEDs. The implemented R–G–B micro-LED arrays are the excellent candidate for high-definition fine-pitch LED displays and demonstrated its versatile functionalities such as visible light communications. The IR micro-LED arrays show great potential in health medical treatment, IR detection imaging and local positioning system.
- Subjects :
- Engineering
Micro-LED arrays
Visible light communication
02 engineering and technology
01 natural sciences
Dot pitch
law.invention
Printed circuit board
020210 optoelectronics & photonics
Optics
Application-specific integrated circuit
law
0103 physical sciences
0202 electrical engineering, electronic engineering, information engineering
Electrical and Electronic Engineering
Diode
010302 applied physics
Pixel
business.industry
display and communication
pixelated-addressed
Electronic, Optical and Magnetic Materials
CMOS
Optoelectronics
lcsh:Electrical engineering. Electronics. Nuclear engineering
business
lcsh:TK1-9971
Biotechnology
Light-emitting diode
Subjects
Details
- Language :
- English
- ISSN :
- 21686734
- Volume :
- 5
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- IEEE Journal of the Electron Devices Society
- Accession number :
- edsair.doi.dedup.....cb7a478754f5c30d4492e324cd5144cb