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Micro light emitting diode display device and manufacturing method thereof

A technology for light-emitting diodes and display devices, applied in semiconductor devices, electrical components, circuits, etc., can solve problems such as affecting the display effect, and achieve the effect of reducing time

Pending Publication Date: 2020-08-25
WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the technical problem that the display area of ​​the driving substrate in the existing display device is affected by the alignment marks for transferring the micro-LEDs, the present disclosure provides a method for manufacturing a micro-LED display device

Method used

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  • Micro light emitting diode display device and manufacturing method thereof
  • Micro light emitting diode display device and manufacturing method thereof
  • Micro light emitting diode display device and manufacturing method thereof

Examples

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Embodiment Construction

[0030] The disclosure provides a method for manufacturing a micro-LED display device, which includes the following steps.

[0031] Step 1: See figure 1 and figure 2 , providing a driving substrate 10 . The driving substrate 10 includes a plurality of first display regions 11 arranged in an array. The driving substrate 10 structurally includes a first substrate 12 and a driving circuit layer 13 disposed on the first substrate 12 . The driving circuit layer 13 in each first display region 11 includes a plurality of first electrodes 14 and a plurality of second electrodes 15 .

[0032] Specifically, providing the driving substrate 10 in step 1 includes step 11 and step 12 .

[0033] Step 11: providing the first substrate 12 . The first substrate 12 can be a rigid substrate made of a glass, such as quartz glass, high-silica glass, borosilicate glass, soda-lime glass and Aluminosilicate glass (aluminosilicate glass). The first substrate 12 can also be a flexible substrate m...

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PUM

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Abstract

The invention discloses a manufacturing method of a micro light emitting diode display device, the method comprises the following steps: providing a driving substrate which comprises a first substrateand a driving circuit layer arranged on the first substrate, wherein the driving circuit layer is provided with a first electrode and a second electrode; providing a transfer substrate which comprises a second substrate, and alignment marks and micro light-emitting diodes which are respectively arranged on two opposite surfaces of the second substrate, wherein the micro light-emitting diodes comprise P electrodes and N electrodes; attaching the driving substrate and the transfer substrate through the alignment marks to enable the first electrode and the second electrode to be electrically connected with the P electrode and the N electrode respectively; removing the alignment mark; and thinning the second substrate. The invention further discloses a display device manufactured through themethod.

Description

technical field [0001] The disclosure relates to the field of display technology, in particular to a micro light-emitting diode display device and a manufacturing method thereof. Background technique [0002] The existing manufacturing method of micro light-emitting diode (micro LED) display device is mainly to transfer the micro LED directly from the growth substrate to the driving substrate, so it is necessary to wait for the driving circuit layer of the driving substrate After forming, transfer the micro light emitting diodes to the driving circuit layer. With the development of technology, the size of micro LEDs is getting smaller and smaller, so that the spacing of micro LEDs on the driving substrate can be smaller and the density can be higher and higher. This enables the pixel density (pixels per inch, PPI) of the micro LED display device to become larger and larger. As far as a 5-inch mobile phone screen with 500PPI is concerned, it contains about 8 million microLE...

Claims

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Application Information

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IPC IPC(8): H01L27/15H01L33/00H01L33/62
CPCH01L27/156H01L33/62H01L33/0095
Inventor 尹伟红
Owner WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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