Mesh N Electrode Display Panel for Uniform Light Emission
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Solution Overview
Problem
Existing display panel technologies have high production costs and low efficiency due to complex transfer processes and poor display quality caused by opaque auxiliary metal electrodes, which reduce the light-emitting area and lead to uneven light emission.
Innovation Solution
A display panel with a substrate featuring an N-type semiconductor layer with protrusions, island-shaped light-emitting diodes, and a mesh structured N electrode, eliminating the need for a transfer process and opaque auxiliary electrodes, and allowing for improved light emission and production efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If opaque auxiliary metal electrodes are used to support the light-emitting diodes, then the structural stability is improved, but the light-emitting area is reduced and display quality deteriorates
Solution Approach 1:
The patent removes the opaque auxiliary metal electrodes from the structure entirely. Instead, the light-emitting diodes are directly mounted on the substrate using transparent conductive materials or refractive index matching materials, which do not block light and maintain full light-emitting area while providing necessary structural support and electrical connection.
Solution Approach 2:
The patent employs materials with transparent optical properties (transparent conductive oxides or refractive index matching materials) instead of opaque metal electrodes. These materials allow light to pass through uniformly, eliminating the light blocking effect while maintaining electrical conductivity and mechanical support functions.
2Manufacturing precision
If complex transfer processes are used to assemble the light-emitting diodes, then the manufacturing precision is improved, but the production cost increases and productivity decreases
Solution Approach 1:
The patent pre-processes the substrate surface with transparent conductive materials or refractive index matching materials before mounting the light-emitting diodes. This preliminary preparation creates optimal mounting conditions that simplify subsequent assembly steps, eliminate complex transfer processes, and enable direct mounting while maintaining high precision and productivity.
Solution Approach 2:
The patent combines multiple functions (structural support, electrical connection, and optical transparency) into a single integrated substrate structure with transparent conductive layers. This merging eliminates the need for separate auxiliary electrodes and complex assembly processes, reducing production steps while maintaining assembly precision.
3Reliability
If opaque auxiliary metal electrodes are used, then the electrical connection is improved, but the light emission uniformity deteriorates
Solution Approach 1:
The patent replaces opaque metal electrodes with transparent conductive materials or refractive index matching materials that are optically transparent. These materials maintain electrical conductivity for reliable electrical connection while allowing uniform light emission through the substrate, eliminating the light blocking and non-uniformity caused by opaque metals.
Solution Approach 2:
The patent uses composite material structures combining transparent conductive oxides or refractive index matching materials with the substrate. These composite materials simultaneously provide electrical conductivity for reliable connections and optical transparency for uniform light emission, resolving the contradiction between electrical reliability and light uniformity.
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 solution reduces production costs, increases light-emitting area, and enhances display quality by integrating the substrate and electrodes, resulting in uniform light emission and improved production efficiency.
Implementation Method 1
containing an N-type semiconductor layer including a plurality of protrusions and a plurality of light-emitting diodes. Each light-emitting diode includes an island-shaped structure. The island-shaped structure includes a protrusion of the plurality of protrusions of the N-type semiconductor layer, a light-emitting layer over the protrusion, and a P-type semiconductor layer over the light-emitting layer
Data Source
AI summary
A display panel is provided. The display panel includes a display region and a non-display region. The display region includes a first substrate, containing an N-type semiconductor layer including a plurality of protrusions and a plurality of light-emitting diodes. Each light-emitting diode includes an island-shaped structure. The island-shaped structure includes a protrusion, a light-emitting layer, and a P-type semiconductor layer. The display region also includes an N electrode and a plurality of P electrodes. The N electrode has a mesh structure, and the island-shaped structure is disposed in a mesh opening of the mesh structure. The N electrode is electrically connected to the N-type semiconductor layer. The plurality of P electrodes are disposed, in a one-to-one correspondence with the plurality of light-emitting diodes, on a side opposite to the N-type semiconductor layer. Each P electrode is electrically connected to the P-type semiconductor layer.