Stacked Electrode LED Layout for Stable Micro-Display Connections
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Solution Overview
Problem
Current techniques for manufacturing subminiature light emitting diodes with inorganic crystal structures face challenges in efficiently arranging and connecting light emitting diodes between electrodes, leading to issues with electrical stability and light emission efficiency in display devices.
Innovation Solution
A light emitting device design featuring a substrate with first and second electrodes on different layers, separated by an insulating layer, with light emitting diodes electrically connected between them, and additional contact electrodes for stable connection, allowing for efficient alignment and integration of subminiature diodes in display devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If light emitting diodes are arranged between electrodes in conventional techniques, then light emission function is achieved, but electrical stability and light emission efficiency deteriorate due to improper arrangement and connection
Solution Approach 1:
The patent transitions from a conventional planar arrangement to a three-dimensional stacked configuration where first and second electrodes are disposed on different layers. The first electrode is on a first layer, the insulating layer is on a second layer covering the first electrode, and the second electrode is on a third layer overlapping the first electrode through the insulating layer. This vertical stacking resolves the technical contradiction by achieving proper electrical connection and stability without the complexity of precise planar alignment.
2Reliability
If light emitting diodes are connected between electrodes, then light emission is achieved, but short-circuiting occurs and efficiency decreases without proper insulation
Solution Approach 1:
The patent introduces an insulating layer as an intermediary component between the first electrode and the second electrode. This insulating layer is disposed on the second layer, covering the first electrode, with a thickness greater than zero. The insulating layer acts as a mediator that prevents direct electrical contact between the first and second electrodes, thereby preventing short-circuiting while maintaining proper electrical connection through the light emitting diode, thus resolving the contradiction between reliability and productivity.
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
This configuration enhances the electrical stability and light emission efficiency of subminiature light emitting diodes, preventing short-circuiting and improving the lifetime and distribution of light emitting diodes in display devices.
Implementation Method 1
a first insulating layer disposed between the at least one first electrode and the at least one second electrode
Data Source
AI summary
A light emitting device may include at least one first electrode and at least one second electrode disposed on different layers on a substrate; a first insulating layer disposed between the first electrode and the second electrode; and at least one light emitting diode electrically connected between the at least one first electrode and the second electrode.