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Color OLED micro display device based on laser thermal transfer printing and method for preparing same

A technology of laser thermal transfer and micro-display devices, which is applied in semiconductor/solid-state device manufacturing, semiconductor devices, electric solid-state devices, etc., can solve problems such as the inability to improve the brightness and efficiency of OLED devices, and the limitation of the performance improvement of OLED micro-display devices. , to achieve the effect of promoting efficiency improvement, preventing degradation and improving performance

Inactive Publication Date: 2018-06-01
ANHUI SEMICON INTEGRATED DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method also has certain defects: mainly reflected in the red, green and blue three-color OLED devices, except that the light-emitting layer is different, the hole injection and transport layers of the OLED, and the electron injection and transport layers are the same structure.
The method of this patent cannot improve the brightness and efficiency of OLED devices by adjusting the OLED transmission and injection layers, which limits the improvement of the performance of OLED microdisplay devices

Method used

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  • Color OLED micro display device based on laser thermal transfer printing and method for preparing same
  • Color OLED micro display device based on laser thermal transfer printing and method for preparing same
  • Color OLED micro display device based on laser thermal transfer printing and method for preparing same

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Embodiment 1

[0034] like Figure 1-2 As shown, this embodiment discloses a color OLED microdisplay device based on laser thermal transfer, which includes a CMOS circuit silicon substrate 100, a pixel anode, an OLED thermal transfer layer 200, a pixel cathode, and an extremely thin film encapsulation layer 300 from bottom to top. , and a cover glass 400.

[0035] like Figure 3-5 As shown, each group of OLED heat transfer layers 200 includes a red light OLED heat transfer layer 201, a green light OLED heat transfer layer 202 and a blue light OLED heat transfer layer 203, and several groups of OLED heat transfer layers 200 form a matrix distributed. Each monochromatic thermal transfer layer includes at least one hole injection layer HIL2001, one hole transport layer HTL2002, one monochromatic light emitting layer EML2003, one electron transport layer ETL2004 and one electron injection layer EIL2005. A hole injection layer HIL2001, a hole transport layer HTL2002, a monochromatic light-emit...

Embodiment 2

[0042] This embodiment discloses a method for preparing the above-mentioned color OLED microdisplay device based on laser thermal transfer printing, comprising the following steps:

[0043] S1. Fabricate pixel anodes on the CMOS circuit silicon substrate 100 by magnetron sputtering.

[0044] S2. Place the donor element of the red OLED thermal transfer layer on the anode of the pixel, and use the laser beam to pass through the mask plate and the objective lens to form a square beam, and the laser beam will prepare the red OLED thermal transfer layer on the donor element Correspondingly transferred to the anode of the pixel to form a red OLED heat transfer layer 201 .

[0045] S4. Place the donor element of the green OLED thermal transfer layer on the anode of the pixel, use the laser beam to pass through the mask plate and the objective lens to form a square beam, and the laser beam will prepare the green OLED thermal transfer layer on the donor element Correspondingly transfe...

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Abstract

The invention discloses a color OLED micro display device based on laser thermal transfer printing. The color OLED micro display device comprises a CMOS circuit silicon substrate, a pixel anode, an OLED thermal transfer printing layer, a pixel cathode, an extremely thin film encapsulation layer, and a glass cover sheet from bottom to top. Each monochrome thermal transfer printing layer includes atleast one hole injection layer HIL, one hole transport layer HTL, one monochromatic light emitting layer EML, one electron transport layer ETL, and one electron injection layer EIL which are successively vapor deposited on the pixel anode. The invention also discloses a method for preparing the color OLED micro display device based on laser thermal transfer printing. The color OLED micro displaydevice based on laser thermal transfer printing has the advantages of improving the efficiency and brightness of the OLED device and not using color photoresist.

Description

technical field [0001] The invention relates to the technical field of display devices, in particular to a laser thermal transfer-based color OLED microdisplay device and a manufacturing method thereof. Background technique [0002] Organic light-emitting diode (OLED) display is recognized by the industry as the third-generation display technology after liquid crystal display (LCD) due to its thinness, active light emission, fast response speed, wide viewing angle, rich colors, high and low temperature resistance and many other advantages. It can be widely used in terminal products such as VR / AR (virtual reality / augmented reality), smartphones, tablet computers, TVs, and military helmet displays. OLED microdisplay refers to an organic light-emitting device driven by silicon-based CMOS with a display size of less than 1 inch. The pixel size is as high as 800×600. Market prospects and military value. [0003] At present, the colorization of almost all OLED microdisplay devic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/32H01L51/56
CPCH10K71/18H10K59/12H10K59/1201H10K71/00
Inventor 王仕伟李文连任清江晋芳铭赵铮涛
Owner ANHUI SEMICON INTEGRATED DISPLAY TECH CO LTD