Porous Electrode Plate for Display Panel Outgassing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional organic EL display panel technologies face issues with reducing electric resistance and maintaining display quality due to trapped moisture and acid in the planarizing film, which can lead to luminance unevenness and contrast reduction when a wide cathode-line is used, and existing solutions fail to effectively address these problems.
Innovation Solution
The display panel apparatus features an electrode plate with holes exposing the planarizing film's surface, allowing for outgassing of moisture and acid, and a power supply section with specific shapes to minimize resistance, ensuring effective current supply and preventing gas occlusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a wide cathode-line is used to supply sufficient operational current, then current supply capability is improved, but the planarizing film is sealed and gas occlusion occurs
Solution Approach 1:
The electrode plate is designed with through-holes forming a porous structure, allowing the planarizing film to remain breathable while maintaining electrical conductivity. This enables sufficient current supply through the electrode plate without sealing the planarizing film, thus preventing gas occlusion and maintaining display quality.
Solution Approach 2:
The electrode plate is segmented into multiple regions including through-holes rather than being a continuous solid structure. This segmentation allows different portions of the electrode plate to serve different functions: conducting current while permitting gas escape through the holes, resolving the contradiction between current supply and film sealing.
2Quantity of substance
If the cathode-line area is increased to reduce electric resistance, then current supply is improved, but manufacturing complexity increases
Solution Approach 1:
The electrode plate serves multiple functions simultaneously: it acts as the cathode for current supply, provides structural support, and maintains breathability through its porous design. This multi-functionality eliminates the need for separate cathode-line structures, reducing manufacturing complexity while ensuring sufficient current supply.
Solution Approach 2:
The electrode plate's physical parameters are optimized by controlling the size, shape, and distribution of through-holes. By adjusting these parameters, the plate maintains appropriate electrical conductivity and mechanical strength while enabling gas permeability, achieving sufficient current supply without increasing device complexity.
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 reduces defects caused by trapped gases, maintains high luminance and contrast, and prevents the electrode plate from peeling off, thereby enhancing display quality and reliability.
Implementation Method 1
an electrode plate electrically connected to the auxiliary electrode and arranged to cover the planarizing film outside the display section... the electrode plate has a hole exposing a part of a surface of the planarizing film
Data Source
AI summary
A method of fabricating a display panel apparatus, includes forming a TFT layer, forming a planarizing film, forming a lower electrode, an electrode plate, and an auxiliary electrode, forming banks, forming the organic EL layer, and forming an upper electrode. The electrode plate has an opening exposing a portion of a surface of the planarizing film. In at least one of the forming of the lower electrode, the electrode plate and the auxiliary electrode, and the forming of the banks, the opening of the electrode plate outgasses the planarizing film. The electrode plate has a power supply that receives current through the electrode plate. The opening extends in parallel with a side of the display near the opening. Current flowing between the power supply and a portion connecting the auxiliary electrode and the electrode plate flows along an extending direction of the opening.