Organic Light Emitting Display Wiring Structure Aperture Ratio
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Solution Overview
Problem
The complexity of wiring line structures in organic light emitting displays leads to a reduced aperture ratio and increased manufacturing costs due to the need for multiple wiring lines, causing non-uniform displaying issues due to threshold voltage variations in driving transistors.
Innovation Solution
The proposed solution involves an organic light emitting display with a simplified wiring line structure where first power source lines are parallel to data lines, with at least two power sources supplied to sub-pixels using lines separated by the same distance, reducing the number of wiring lines and allowing for stable power distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple wiring lines (power source lines and initialization lines) are provided for each sub pixel, then the sub pixels can be properly powered and initialized, but the aperture ratio is reduced and manufacturing cost increases
Solution Approach 1:
The patent combines multiple power source lines into a single shared power source line that serves multiple sub pixels. Instead of providing separate power source lines for each sub pixel, the invention merges them into common lines that are shared across groups of sub pixels, thereby reducing the total number of wiring lines and increasing the aperture ratio while maintaining proper power supply to all sub pixels
Solution Approach 2:
The shared power source lines are designed to serve multiple functions and multiple sub pixels simultaneously. A single power source line acts as a universal conductor that provides power to multiple sub pixels, reducing redundancy in the wiring structure and improving the aperture ratio without compromising the reliability of sub pixel operation
2Reliability
If multiple wiring lines are provided for each sub pixel, then proper power distribution is achieved, but the number of wiring lines increases leading to increased manufacturing cost
Solution Approach 1:
The patent merges multiple individual power source lines into shared power source lines that are common to multiple sub pixels. This consolidation reduces the total number of wiring lines that need to be manufactured and assembled, thereby reducing manufacturing complexity and cost while maintaining stable power distribution through the shared lines
3Reliability
If multiple wiring lines are provided for each sub pixel, then proper initialization is achieved, but the wiring line structure becomes complex
Solution Approach 1:
The patent combines multiple initialization lines into shared initialization lines that serve multiple sub pixels. Instead of providing separate initialization lines for each sub pixel, the invention merges them into common lines that are shared across groups of sub pixels, thereby simplifying the wiring line structure and reducing complexity while maintaining proper initialization functionality
Data Source
AI summary
An organic light emitting display is capable of reducing or minimizing the number of wiring lines to improve an aperture ratio. The organic light emitting display includes scan lines and data lines that cross each other at crossing regions, sub pixels located at the crossing regions that display an image in accordance with an amount of current that flows from a first power source to respective organic light emitting diodes in the sub pixels, and first power source lines that are parallel to the data lines, each of the first power source lines corresponding to at least two of the data lines. The first power source lines include a first group of the first power source lines that receive the first power source and a second group of the first power source lines that receive a second power source.