Display apparatus

Abstract

A display apparatus includes multiple pixels. The pixels can emit one or more colors of light. Light of the same color emitted by two or more of the pixels can have wavelengths that differ by no more than one percent. The pixels can include a stacked structure including two or more subpixels, with each subpixel emitting light of a different color than the other subpixels in the stacked structure.

1 . A display apparatus comprising:
 a plurality of pixels, each pixel having a stacked structure including a plurality of wells, wherein the plurality of wells of each pixel emit light of a plurality of different colors; and wherein one of the wells configured to emit light of a first color for a first pixel and a corresponding one of the wells configured to emit light of the first color for a second pixel emit light of the first color with peak wavelengths that differ by less than one percent.   
     
     
         2 . The display apparatus of  claim 1 , wherein the stacked structure is a heterostructure comprising three subpixels stacked in a vertical direction, wherein each of the three subpixels in the heterostructure includes one or more wells configured to emit light of the same color. 
     
     
         3 . The display apparatus of  claim 2 , wherein the one or more wells of each of the three subpixels emit light having a different color than the light emitted by the one or more wells of the other subpixels of the three subpixels. 
     
     
         4 . The display apparatus of  claim 3 , wherein the colors emitted by the three subpixels include: red, green, and blue. 
     
     
         5 . The display apparatus of  claim 2 , wherein each subpixel comprises a p-type semiconductor layer, an n-type semiconductor layer, and a well layer including the one or more wells. 
     
     
         6 . The display apparatus of  claim 5 , wherein at least one of the three subpixels further includes a substrate. 
     
     
         7 . The display apparatus of  claim 5 , wherein, for each of the plurality of pixels:
 a first subpixel includes an AlGaInP-based well layer;   a second subpixel includes an AlGaInN-based well layer; and   a third subpixel includes either an AlGaInP-based well layer or an AlGaInN-based well layer.   
     
     
         8 . The display apparatus of  claim 5 , wherein the three subpixels in the stacked structure are bonded to one another. 
     
     
         9 . The display apparatus of  claim 2 , wherein each pixel further includes three electrodes, wherein each of the three electrodes is electrically connected to a different one of the three sub pixels. 
     
     
         10 . The display apparatus of  claim 1 , further comprising a circuit board, wherein each of the plurality of pixels is mounted to the circuit board. 
     
     
         11 . The display apparatus of  claim 1 , wherein the display apparatus is configured to operate as one of an LED TV, a virtual reality (VR) display apparatus, a VR headset, or an augmented reality (AR) display apparatus. 
     
     
         12 . A display apparatus comprising:
 a first pixel including a first well configured to emit light having a first peak wavelength; and   a second pixel including a second well configured to emit light having a second peak wavelength, wherein the second peak wavelength is within one percent of the first peak wavelength.   
     
     
         13 . The display apparatus of  claim 12 , wherein the first pixel further includes a third well configured to emit light having a third peak wavelength, wherein the second pixel further includes a fourth well configured to emit light having a fourth peak wavelength, wherein the fourth peak wavelength is within one percent of the third peak wavelength, and wherein the third and fourth peak wavelengths are a different color from the color of the first and second peak wavelengths. 
     
     
         14 . The display apparatus of  claim 13 , wherein each of the first pixel and the second pixel includes a stacked structure including the corresponding wells. 
     
     
         15 . The display apparatus of  claim 14 , wherein each stacked structure is a heterostructure comprising at least two subpixels stacked in a vertical direction, wherein the at least two subpixels in the heterostructure are configured to emit light of different colors from each other. 
     
     
         16 . The display apparatus of  claim 15 , wherein each pixel further includes at least two electrodes, wherein each of the at least two electrodes is electrically connected to a different one of the at least two subpixels. 
     
     
         17 . The display apparatus of  claim 13 , wherein the first and second wells are one of AlGaInP-based well layers or AlGaInN-based well layers, and wherein the third and fourth wells are the other of AlGaInP-based well layers or AlGaInN-based well layers. 
     
     
         18 . A display apparatus comprising:
 a plurality of pixels, each pixel having a stacked structure including at least two subpixels, the at least two subpixels configured to emit light of different colors from each other, wherein a subpixel configured to emit light of a first color for a first pixel and a corresponding subpixel configured to emit light of the first color for a second pixel emit light of the first color with peak wavelengths that differ by less than one percent.   
     
     
         19 . The display apparatus of  claim 18 , wherein each of the at least two subpixels includes one or more wells configured to emit light of the same color, and wherein each pixel further includes at least two electrodes, wherein each of the at least two electrodes is electrically connected to a different one of the at least two subpixels. 
     
     
         20 . The display apparatus of  claim 18 , wherein each of the at least two subpixels comprises a p-type semiconductor layer, an n-type semiconductor layer, and a well layer including one or more wells configured to emit light, and wherein the at least two subpixels are bonded to one another.