Semiconductor Light Emitting Display Device with Conductive Adhesive
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Solution Overview
Problem
Current display devices, such as LCDs and AMOLEDs, face issues like mediocre response time, short lifespan, low yield, and limited flexibility, which are not adequately addressed by existing technologies.
Innovation Solution
A display device utilizing a flip chip type semiconductor light emitting device with a new structure, featuring a wiring substrate with conductive electrodes and a conductive adhesive layer, allowing for fine pitch arrangement and flexibility, enabling a rollable display with reduced via holes per pixel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If semiconductor light emitting devices are arranged with fine pitch to achieve high resolution, then display resolution is improved, but manufacturing complexity increases
Solution Approach 1:
The invention divides the display device into multiple independent sub-pixel portions, each containing multiple light emitting devices of different colors (red, green, blue). This segmentation allows each sub-pixel to be manufactured and controlled independently, enabling fine pitch arrangements to achieve high resolution without proportionally increasing overall manufacturing complexity.
Solution Approach 2:
The invention creates a universal sub-pixel structure that can accommodate multiple light emitting devices with different characteristics (different colors, different pitches). This multi-functional design allows the same basic structure to be used across the entire display, simplifying manufacturing processes while maintaining the ability to achieve high resolution through fine pitch arrangements.
2Adaptability or versatility
If conventional display structures are used to achieve flexibility, then adaptability is improved, but response time worsens
Solution Approach 1:
The invention changes the fundamental parameters of the display structure by using semiconductor light emitting devices with specific structural characteristics (thin-film transistor backplanes, specific electrode configurations) that enable both flexibility and fast response times. This parameter optimization allows the display to achieve millisecond-level response times while maintaining bendable and foldable form factors.
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 enables a flexible, high-resolution display with improved response time and lifespan by allowing for fine pitch semiconductor light emitting devices with reduced manufacturing complexity and increased flexibility.
Implementation Method 1
light emitting diodes (LEDs) are well known light emitting devices for converting an electrical current to light
Implementation Method 2
a conductive adhesive layer configured to cover the wiring substrate
Data Source
Figure 1~2
Figure 3a~5a
Figure 5b~5c
AI summary
Discussed is a display device including a wiring substrate having a first electrode and a second electrode formed on different surfaces, a conductive adhesive layer configured to cover the wiring substrate, and a sub-pixel portion coupled to the conductive adhesive layer to have a plurality of light emitting portions that emit different color lights, wherein the sub-pixel portion has a plurality of first conductive electrodes corresponding to the plurality of light emitting portions, and a second conductive electrode as a common electrode for the plurality of light emitting portions, and wherein an electrode hole is formed on the wiring substrate to electrically connect the second electrode to the second conductive electrode.