Transparent Display Panel Wiring Electrode Aperture Ratio
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Solution Overview
Problem
The aperture ratio of transparent display panels is limited by the presence of electrodes, which obstructs transmissivity and increases current consumption due to high electrical resistivity.
Innovation Solution
Employing transparent wiring electrodes made of low-resistivity materials like indium-gallium-zinc-oxide (IGZO) subjected to plasma treatment in the transmissive area, allowing for improved transmissivity and reduced current consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If transparent electrodes are used in the transmissive area, then transmissivity is improved, but electrical resistivity increases causing higher current consumption
Solution Approach 1:
The patent applies parameter changes by subjecting the transparent electrode material (IGZO) to plasma treatment, which modifies its electrical properties. The plasma treatment process changes the electrical resistivity parameter of the transparent electrode from a high value to a low value, enabling it to conduct electricity efficiently while maintaining transparency. This resolves the contradiction by transforming the material's parameters through plasma processing.
Solution Approach 2:
The patent uses composite materials by combining IGZO (indium gallium zinc oxide) with plasma treatment effects. The transparent electrode is formed as a composite structure where the base IGZO material provides transparency, and the plasma treatment layer or modified surface provides low electrical resistivity. This composite approach allows simultaneous achievement of high transmissivity and low current consumption.
2Ease of operation
If electrodes are disposed in the transmissive area, then driving circuits can be formed, but aperture ratio is reduced
Solution Approach 1:
The patent applies the color changes principle by using transparent electrodes instead of conventional opaque metal electrodes. The transparent electrode material allows light to pass through while still performing the electrical function of driving circuits. This effectively makes the electrode 'invisible' in the transmissive area, maintaining high aperture ratio while preserving driving circuit functionality.
Solution Approach 2:
The patent changes the optical parameter of the electrode material from opaque to transparent. By selecting transparent conductive materials like IGZO and optimizing their properties through plasma treatment, the electrodes become optically transparent while maintaining electrical functionality. This parameter change allows electrodes to exist in the transmissive area without reducing the aperture ratio.
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
Enhances the aperture ratio of the transmissive area while reducing power consumption and simplifying the manufacturing process by using transparent electrodes that maintain low electrical resistivity.
Implementation Method 1
transparent wiring electrodes made of low-resistivity materials like indium-gallium-zinc-oxide (IGZO) subjected to plasma treatment
Data Source
AI summary
A transparent display panel, and a method of manufacturing the transparent display panel are discussed. The transparent display panel according to one embodiment includes a substrate; a driving element formed in a display pixel area on the substrate; a wiring electrode formed in the display pixel area and connected to the driving element; and a transparent wiring electrode formed in a transmissive area on the substrate, the transparent wiring electrode being extended to connect to the wiring electrode in the display pixel area.