OLED Subpixel Isolation via Segmented Insulating Protrusions
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Solution Overview
Problem
Current OLED display devices face challenges in achieving ultra-high definition due to limitations in subpixel design and light emission characteristics, leading to issues with current leakage, waveguide phenomena, and color mixing.
Innovation Solution
A light-emitting display device is designed with a substrate featuring an insulating layer having depressions and protrusions, where light-emitting diodes with a pixel electrode layer, emission layer, and common electrode layer are positioned on the protrusions, and a black matrix layer is placed in the depressions to isolate emission regions and prevent light leakage, thereby reducing current leakage and waveguide effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If light-emitting diodes are positioned closely together to increase display resolution, then display definition is improved, but current leakage between subpixels increases
Solution Approach 1:
The insulating layer is segmented into multiple protrusions, each corresponding to a light-emitting diode position. These protrusions physically separate adjacent subpixels, creating isolated regions that prevent current leakage while maintaining high display definition through close positioning of LEDs.
Solution Approach 2:
The insulating layer with protrusions acts as an intermediary structure between adjacent light-emitting diodes. This intermediary provides electrical isolation and physical separation, preventing harmful current leakage while allowing the LEDs to be positioned closely for high definition display.
2Measurement precision
If light-emitting diodes are positioned closely together to increase display resolution, then display definition is improved, but waveguide phenomena increase
Solution Approach 1:
The insulating layer is segmented into multiple protrusions, each corresponding to a light-emitting diode position. These protrusions physically separate adjacent subpixels, creating isolated regions that prevent current leakage while maintaining high display definition through close positioning of LEDs.
Solution Approach 2:
The insulating layer with protrusions acts as an intermediary structure between adjacent light-emitting diodes. This intermediary provides electrical isolation and physical separation, preventing harmful current leakage while allowing the LEDs to be positioned closely for high definition display.
3Measurement precision
If light-emitting diodes are positioned closely together to increase display resolution, then display definition is improved, but color mixing between subpixels increases
Solution Approach 1:
The insulating layer is segmented into multiple protrusions, each corresponding to a light-emitting diode position. These protrusions physically separate adjacent subpixels, creating isolated regions that prevent current leakage while maintaining high display definition through close positioning of LEDs.
Solution Approach 2:
The insulating layer with protrusions acts as an intermediary structure between adjacent light-emitting diodes. This intermediary provides electrical isolation and physical separation, preventing harmful current leakage while allowing the LEDs to be positioned closely for high definition display.
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 design effectively reduces current leakage between subpixels, minimizes waveguide phenomena, and prevents color mixing, enhancing the display's definition and overall performance.
Implementation Method 1
a plurality of light-emitting diodes on the protrusions, the light-emitting diodes including: a pixel electrode layer, an emission layer, and a common electrode layer
Data Source
AI summary
A light-emitting display device and method of manufacturing the same are provided. A light-emitting display device includes: a first substrate, an insulating layer on the first substrate, the insulating layer including depressions and protrusions, a plurality of light-emitting diodes on the protrusions, the light-emitting diodes including: a pixel electrode layer, an emission layer, and a common electrode layer, and a black matrix layer in the depressions.