Vertical Light-Emitting Unit Layout for Higher Display Resolution
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Solution Overview
Problem
Conventional display apparatuses have low display resolution due to limitations in the number and arrangement of light-emitting units on the base substrate.
Innovation Solution
A display panel with a vertical structure of light-emitting units, where each unit consists of a first electrode, a first semiconductor layer, a light-emitting layer, a second semiconductor layer, and a second electrode stacked together, sharing a common first electrode. This configuration allows for a higher density of light-emitting units and improved display resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If light-emitting units are arranged in a conventional planar structure on the base substrate, then the structure is simple to manufacture, but the display resolution is low due to limited number and arrangement density of light-emitting units
Solution Approach 1:
The patent transitions from a conventional planar arrangement of light-emitting units to a vertical stacked structure where multiple light-emitting units are arranged in the thickness direction of the base substrate. This dimensional change allows significantly higher density of light-emitting units per unit area, thereby improving display resolution without proportionally increasing manufacturing complexity
Solution Approach 2:
Adjacent light-emitting units share common electrodes (first electrode and second electrode) that are positioned between them in the vertical stack. This merging of electrode functions reduces the total number of electrodes required and simplifies the manufacturing process while maintaining the high-density vertical arrangement
2Manufacturing precision
If multiple light-emitting units are placed closer together to increase density, then display resolution improves, but light crosstalk between adjacent units increases
Solution Approach 1:
The patent introduces isolation structures positioned between adjacent light-emitting units in the vertical stack. These isolation structures act as optical barriers that prevent light from one unit from reaching adjacent units, thereby eliminating crosstalk while allowing the units to be positioned closely together for high density and improved resolution
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The vertical structure of light-emitting units increases the number of units on the base substrate, thereby enhancing display resolution and simplifying the preparation process by allowing multiple units to share a common first electrode.
Implementation Method 1
the isolation structure includes a retro-reflective material
Implementation Method 2
a surface of the first electrode facing away from the base substrate is a roughened surface that forms the light extraction structure
Data Source
AI summary
The present disclosure provides a display apparatus, a display panel and a method of preparing the same. A display panel includes: a base substrate; and a plurality of light-emitting units provided on the base substrate, where each of the light-emitting units includes a first electrode, a first semiconductor layer, a light-emitting layer, a second semiconductor layer, and a second electrode which are stacked, the first electrode is provided on a side of the second electrode facing away from the base substrate, and the plurality of light-emitting units share a common first electrode. The present disclosure can improve display resolution.