Integrated Conductive Layer for High-Definition Display Layout
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Solution Overview
Problem
Existing display technologies face challenges in achieving high-definition displays with reduced constituent elements and layout area, while maintaining efficient power usage and performance.
Innovation Solution
The proposed display apparatus incorporates a top-surface-emitting type organic EL display with an active matrix drive, featuring a conductive layer opposed to a pixel electrode to form a capacitance unit, which reduces the number of semiconductor layers and wiring lines, thereby minimizing the layout area and enhancing definition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a conventional active matrix display structure is used with separate semiconductor layers and wiring lines, then the display can achieve basic functionality, but the number of constituent elements increases and the layout area expands
Solution Approach 1:
The patent merges the semiconductor layer and wiring line functions into a single integrated conductive layer. This conductive layer simultaneously serves as both the semiconductor active region and the wiring structure, eliminating the need for separate semiconductor layers and wiring lines. The merging reduces the total number of constituent elements and minimizes the layout area required for the display device.
Solution Approach 2:
The conductive layer is designed to perform multiple functions: it acts as the semiconductor layer for pixel operation, serves as wiring lines for signal transmission, and forms capacitance units with pixel electrodes. This multi-functional design eliminates the need for separate dedicated structures for each function, thereby reducing device complexity and layout area.
2Reliability
If multiple separate wiring lines are used for video signals and initialization signals, then signal transmission is reliable, but the number of wiring lines increases and layout area expands
Solution Approach 1:
The patent combines multiple signal transmission functions into a single wiring line structure. The conductive layer serves as a shared wiring line that can transmit both video signals and initialization signals at different time periods, eliminating the need for separate dedicated wiring lines for each signal type. This reduces the number of wiring lines while maintaining signal transmission reliability through temporal multiplexing.
3Manufacturing precision
If traditional display structures with multiple layers are used, then functional requirements are met, but the layout area increases and definition is reduced
Solution Approach 1:
The patent merges multiple functional layers into a single conductive layer that performs both semiconductor and wiring functions. This integration reduces the overall layout area available for pixel elements, allowing more pixels to be packed into a given area, thereby improving display definition. The reduced layout area per pixel enables higher pixel density while maintaining all necessary functions.
Solution Approach 2:
The patent utilizes the capacitance unit formed between the conductive layer and pixel electrode to store signal information, transitioning from a purely planar wiring approach to a three-dimensional capacitance-based signal storage mechanism. This allows signal holding functionality to be achieved without occupying additional planar layout area, thus improving definition by enabling higher pixel density.
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 enables a high-definition display with improved space utilization and reduced power consumption, while maintaining high image quality and performance.
Implementation Method 1
a first conductive layer and a second conductive layer, which are opposed to each other to form a capacitance unit
Data Source
AI summary
According to one embodiment, a display apparatus includes a plurality of semiconductor layers, a first insulation film, a first conductive layer, a second insulation film and a display element includes a second conductive layer. The first conductive layer and the second conductive layer are opposed to each other to form a capacitance unit.