Display apparatus and method of manufacturing the same

Abstract

A display apparatus and a method of manufacturing the display method are provided. The display apparatus includes a transfer substrate, and micro display elements spaced apart from each other in units of sub-pixels on the transfer substrate, wherein each of the micro display elements includes a micro light emitting unit and a drive unit, wherein the drive unit includes drive electrodes and drives the micro light emitting unit.

What is claimed is: 
     
         1 . A micro display element comprising:
 a micro light-emitting unit configured to emit light; and   a drive unit comprising a drive transistor and a drive electrode configured to drive the micro light-emitting unit,   wherein the micro light-emitting unit is monolithically coupled to the drive unit.   
     
     
         2 . The micro display element of  claim 1 , further comprising an insulating layer between the micro light-emitting unit and the drive unit. 
     
     
         3 . The micro display element of  claim 1 , further comprising a reflective layer between the micro light-emitting unit and the drive unit. 
     
     
         4 . The micro display element of  claim 1 , wherein the drive unit further comprises a plurality of drive electrodes provided at different distances from a center of the drive unit. 
     
     
         5 . The micro display element of  claim 1 , wherein the drive unit comprises at least two transistors and at least one capacitor. 
     
     
         6 . The micro display element of  claim 1 , having a horizontal electrode structure in which an electrode is disposed in one direction. 
     
     
         7 . The micro display element of  claim 1 , configured to emit blue light. 
     
     
         8 . A display apparatus comprising:
 a display substrate;   a plurality of display elements, each of the plurality of display elements comprising a micro light-emitting unit and a drive unit, the drive unit comprising a drive transistor and a drive electrode to drive the micro light-emitting unit, wherein the micro light-emitting unit and the drive unit are monolithically coupled to each other, and the plurality of display elements are spaced apart from each other in units of sub-pixels on the display substrate; and   a color conversion layer formed over the display element for each sub-pixel.   
     
     
         9 . The display apparatus of  claim 8 , further comprising an insulating layer between the micro light-emitting unit and the drive unit. 
     
     
         10 . The display apparatus of  claim 8 , further comprising a reflective layer between the micro light-emitting unit and the drive unit. 
     
     
         11 . The display apparatus of  claim 8 , wherein the drive unit further comprises a plurality of drive electrodes provided at different distances from a center of the drive unit. 
     
     
         12 . The display apparatus of  claim 8 , wherein the drive unit comprises at least two transistors and at least one capacitor. 
     
     
         13 . The display apparatus of  claim 8 , wherein the display element has a horizontal electrode structure in which an electrode is disposed in one direction. 
     
     
         14 . The display apparatus of  claim 8 , wherein the color conversion layer comprises quantum dots. 
     
     
         15 . The display apparatus of  claim 8 , wherein the display element emits blue light. 
     
     
         16 . The display apparatus of  claim 15 , wherein, when the display element emits blue light, the color conversion layer comprises only a red conversion layer and a green conversion layer. 
     
     
         17 . A method of manufacturing a display apparatus, the method comprising:
 forming a micro light-emitting unit on growth substrate;   forming a drive unit monolithically on the micro light-emitting unit, wherein the drive unit comprising a drive transistor and a drive electrode to drive the micro light-emitting unit;   etching the micro light-emitting unit and the drive unit to integrally form display elements;   removing the growth substrate to separate the display elements;   a first transfer operation of transferring the separated display elements to a transfer substrate in units of sub-pixels of the display apparatus;   a second transfer operation of transferring the display elements on the transfer substrate to a display substrate on which wiring corresponding to the drive unit is formed; and   forming a color conversion layer over the display elements to correspond to each of the display elements.   
     
     
         18 . The method of  claim 17 , wherein the display substrate is one of a rigid substrate and a flexible substrate. 
     
     
         19 . The method of  claim 17 , wherein, in the first transfer operation, the display elements are transferred by a fluid self-assembly method. 
     
     
         20 . The method of  claim 17 , wherein the color conversion layer comprises quantum dots. 
     
     
         21 . A method of manufacturing a display apparatus, the method comprising:
 forming a micro light-emitting unit on a growth substrate;   forming a drive unit monolithically over the micro light-emitting unit, the drive unit comprising a drive transistor and a drive electrode to drive the micro light-emitting unit;   etching the micro light-emitting unit and the drive unit to integrally form display elements;   removing the growth substrate to separate the display elements;   transferring the separated display elements to a display substrate in units of sub-pixels of the display apparatus;   forming wiring corresponding to the drive unit over the display elements; and   forming a color conversion layer over the drive unit.   
     
     
         22 . The method of  claim 21 , wherein the display substrate is one of a rigid substrate and a flexible substrate. 
     
     
         23 . The method of  claim 21 , wherein, in the transferring of the separated display elements, the display elements are transferred by a fluid self-assembly method. 
     
     
         24 . The method of  claim 21 , wherein the color conversion layer comprises quantum dots.