Display Panel Contact Layer Stacking for Pixel Density
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Solution Overview
Problem
Active matrix EL panels face challenges in achieving high definition due to the large area required for conductive layers with contact portions, which hinders effective pixel utilization and display performance.
Innovation Solution
The conductive layers with contact portions are positioned at the same location in the planar direction, reducing the area occupied by these layers and enhancing pixel efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If contact portions are disposed at spaced positions to prevent contact failure, then reliability is improved, but area of the conductive layer increases
Solution Approach 1:
The patent transitions from a two-dimensional planar arrangement of contact portions to a three-dimensional stacked arrangement. By positioning contact portions at the same planar position across multiple conductive layers, the invention utilizes the vertical dimension to achieve both compact area utilization and reliable contact connections without requiring lateral spacing.
Solution Approach 2:
The patent merges the contact portions of multiple conductive layers at the same planar position, creating a vertically stacked contact structure. This consolidation reduces the overall area required for contact connections while maintaining reliable electrical contact through the layered structure.
2Productivity
If conductive layer area is reduced to improve pixel utilization, then productivity is improved, but contact reliability may deteriorate
Solution Approach 1:
By moving contact portion arrangements into the vertical dimension through layer stacking, the patent enables reduced planar area per pixel while preserving contact reliability through the layered contact structure that maintains proper electrical connections without requiring large lateral spacing.
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 allows for a reduction in the area of conductive layers with contact portions, improving pixel utilization and enabling higher definition and better display performance without compromising luminance or power efficiency.
Implementation Method 1
utilizes a phenomenon that, if an electric field is applied to an organic thin film, then the organic thin film emits light
Data Source
AI summary
Disclosed herein is a display apparatus, including, a panel having a plurality of pixels disposed in a matrix and each including a self-luminous element for emitting light, the panel including first to third conductive layers laminated in order on a supporting substrate, a first contact portion between the first and second conductive layers and a second contact portion between the second and third conductive layers being disposed at the same position in a planar direction.