OLED Anode Common Voltage Line Integration
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Solution Overview
Problem
Existing OLED displays face challenges in reducing the width of the dead space and achieving slimness due to the presence of a common voltage line in the peripheral area, which increases power consumption and makes it difficult to minimize the display panel size while maintaining appropriate power consumption.
Innovation Solution
The solution involves removing the common voltage line from the peripheral area and utilizing the anode in both the pixel and peripheral areas as the common voltage line, formed from the same material, to reduce the dead space and enhance the slimness of the display device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a common voltage line is formed in the peripheral area, then power consumption is maintained, but the dead space width increases and device thickness increases
Solution Approach 1:
The patent merges the common voltage line function with the anode structure by forming the anode in both the pixel area and peripheral area using the same material and process. This integration eliminates the need for a separate common voltage line in the peripheral area, thereby reducing dead space width while maintaining proper voltage supply for power consumption requirements.
Solution Approach 2:
The anode structure is designed to serve multiple functions: it acts as both the pixel electrode in the pixel area and the common voltage line in the peripheral area. This multi-functional design allows a single structure to fulfill both display function and power supply function, reducing overall device complexity and space occupation.
2Power
If a common voltage line is formed in the peripheral area, then power supply is maintained, but device thickness increases
Solution Approach 1:
The patent combines the common voltage line function with the anode layer by forming both structures simultaneously in the same pixel and peripheral areas using identical materials and deposition processes. This merging eliminates the need for additional separate common voltage line layers in the peripheral area, thereby reducing overall device thickness while maintaining proper power supply to the OLED structure.
3Area of stationary object
If the anode is formed in both pixel and peripheral areas, then dead space is reduced, but manufacturing complexity increases
Solution Approach 1:
The anode structure is designed to serve dual purposes: functioning as the pixel electrode in the pixel area and as the common voltage line in the peripheral area. By using the same material, formation process, and structural configuration for both regions, the patent simplifies manufacturing procedures while effectively reducing dead space width.
Solution Approach 2:
The patent applies the same anode material and structure uniformly across both pixel and peripheral areas, allowing the structure to adapt to different functional requirements locally while maintaining manufacturing simplicity through standardized processes and materials throughout.
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 approach reduces the width of the dead space, thereby decreasing power consumption and enabling the manufacture of thinner display devices by eliminating the need for a separate common voltage line in the peripheral area.
Implementation Method 1
generates excitons by combining electrons injected from a cathode which is one of the two electrodes with holes injected from an anode on the organic emission layer and emits light by allowing the excitons to emit energy
Data Source
AI summary
An organic light-emitting diode display is disclosed. In one aspect, the display includes a substrate including a pixel area and a peripheral area surrounding the pixel area and an organic light-emitting element formed in the pixel area and including a first electrode, an organic emission layer, and a second electrode. The display also includes a common voltage line formed in the peripheral area and configured to provide a common voltage to the second electrode, wherein the common voltage line and the first electrode are formed of the same material.