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Book Fabrication and Analysis of Resolution 1920 1080 with 5 CEBCm GaN based Micro Light Emitting Diodes for High Resolution Display Applications

Download or read book Fabrication and Analysis of Resolution 1920 1080 with 5 CEBCm GaN based Micro Light Emitting Diodes for High Resolution Display Applications written by 王柏翔 and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book GaN Micro LED Integration with Thin Film Transistors for Flexible Displays

Download or read book GaN Micro LED Integration with Thin Film Transistors for Flexible Displays written by Mohsen Asad and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The research presented provides a systematic attempt to address the major challenges for the development of flexible micro-light-emitting diode (LED) displays. The feasibility of driving GaN-based micro-LEDs with a-Si:H-based thin-film transistors by using a thin-film bonding and transfer process was initially proposed. This approach was implemented to create an inverted pixel structure where the cathode of the LED is connected directly to the drain contact of the drive TFT resulting in a pixel circuit having more than 2× higher brightness compared to a standard pixel design. This "paste-and-cut" technique was further demonstrated for the development of flexible displays, enabling the study of the effect of mechanical strain and self-heating of the devices on plastic. Through a finite-element analysis, it was determined that the applied stress-induced strain near the quantum wells of the micro-LEDs are negligible for devices with diameters smaller than 20 microns. Thermal simulation of the LEDs on plastic revealed that a copper bond layer thicker than 600 nm can be used to alleviate self-heating effects of the micro-LEDs. Using these design parameters, micro-LED arrays with 20 micron diameter were integrated onto flexible substrates to validate the theoretical predictions. Further scaling of the LED size revealed substrate bending also tilts the direction of the LED structure, allowing further extraction of light. This effect was demonstrated using nanowire LEDs with a 250 nm diameter transferred onto plastic, where the light output could be enhanced by 2× through substrate bending. Finally, through the removal of bulk defect and surface states, fabrication of highly efficient micro-LEDs having > 400% increase in light output (compared to conventional diodes) was achieved. This outcome was accomplished through the removal of the defective buffer region adjacent to the active layers of the LED and minimization of the non-radiative recombination at the sidewalls. The former was accomplished through the removal of the buffer layer after separation of the LED from the process wafer while the latter is accomplished using a surround cathode gate electrode to deplete free carriers from the sidewall of the forward-biased LED. The resulting performance enhancements provided a basis for high-brightness flexible micro-LED displays developed in this dissertation.

Book Study and Fabrication of GaN based Micro Light Emitting Diodes

Download or read book Study and Fabrication of GaN based Micro Light Emitting Diodes written by 陳建儒 and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Micro LEDs

    Micro LEDs

    Book Details:
  • Author :
  • Publisher : Academic Press
  • Release : 2021-06-04
  • ISBN : 0128230630
  • Pages : 412 pages

Download or read book Micro LEDs written by and published by Academic Press. This book was released on 2021-06-04 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: MicroLEDs', Volume 106 is currently recognized as the ultimate display technology and one of the fastest-growing technologies in the world as technology giants utilize it on a wide-ranging set of products. This volume combines contributions from MicroLED pioneers and world's leading experts in the field who focus on the MicroLED development, current cutting-edge technologies of pursuing for realizing MicroLED large flat panel displays and televisions, virtual reality and 3D displays, light source for LI-FI data communications, neural interface and optogenetics, and future MicroLED technology trends. - Contains contributions from original MicroLED inventors and pioneers - Provides the most comprehensive and updated status of MicroLED technological advancements and applications - Updates on future MicroLED technology trends

Book OLED Microdisplays

Download or read book OLED Microdisplays written by François Templier and published by John Wiley & Sons. This book was released on 2014-09-15 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microdisplays are displays requiring optical magnification and OLEDs (Organic Light-Emitting Diode) are self-emitting displays where each pixel includes a LED made of organic material, in general composed of small-molecule organic material. This title reviews in detail how OLED microdisplays are made as well as how they are used. All aspects from theory to application will be addressed: basic principles, display design, display fabrication, operation and performances, present and future applications. The book will be useful to anyone interested in this rapidly developing field, such as students or researchers, industry professionals (engineers, project leaders) in the field of display development/fabrication and display end-users.

Book Fabrication and Characterization of Gallium Nitride Based Micro cavity Light Emitting Diodes

Download or read book Fabrication and Characterization of Gallium Nitride Based Micro cavity Light Emitting Diodes written by Paul Morgan Pattison and published by . This book was released on 2006 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fabrication and characterization of novel gallium nitride based micro-cavity light emitting diodes is presented. A fabrication process was developed for creating a GaN light emitting diode within a micro-cavity of controllable thickness. The benefits of this structure can be enhanced light extraction efficiency, brightness, spectral purity, and directionality. The fabrication process involves flip chip processing, laser lift-off, and cavity thinning by inductively coupled plasma etching of the nitrogen faced GaN. Using these methods GaN based micro-cavity light emitting diodes were fabricated with cavity thicknesses as low as 350nm.

Book Fabrication and Characterization of GaN based Light Emitting Diodes

Download or read book Fabrication and Characterization of GaN based Light Emitting Diodes written by Ka-kuen Leung and published by . This book was released on 2010 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: