Display Panel Pixel Layout for Uniform Light Emission Efficiency
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Solution Overview
Problem
Existing display panels exhibit significant variations in light emission efficiency based on the color of output light, leading to inefficiencies and potential display defects.
Innovation Solution
The display panel design includes specific arrangements of pixel circuits and light emitting elements, with capacitors and transistors positioned to minimize overlap and maximize efficiency, utilizing transistors and capacitors to stabilize pixel circuit operation and reduce the impact of light emitting element characteristics on pixel performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If light emitting elements are arranged to overlap capacitors to increase pixel density, then device integration is improved, but light emission efficiency deteriorates due to interference from capacitor structures
Solution Approach 1:
The patent applies dimensional separation by arranging light emitting elements and capacitors in different spatial zones within the pixel structure. Specifically, light emitting elements are positioned in a first region while capacitors are placed in a second region, with the regions separated by a predetermined distance. This spatial dimensionality change eliminates overlap interference while maintaining high pixel density through optimized layout configuration.
2Adaptability or versatility
If different colored light emitting elements have varying light emission efficiencies, then color diversity is achieved, but overall efficiency deteriorates due to significant performance variations
Solution Approach 1:
The patent implements local quality optimization by providing different pixel circuit configurations tailored to specific light emitting element types. First pixel circuits are designed for first colored light emitting elements with specific capacitor arrangements, while second pixel circuits are designed for second colored light emitting elements with optimized capacitor positioning. This localized circuit design compensates for inherent efficiency differences between color types, achieving uniform overall performance while maintaining color diversity.
Data Source
AI summary
A display panel includes: first and second pixel circuits each including a transistor and a capacitor, and first and second light emitting elements electrically connected to the first and second pixel circuits, respectively. The first light emitting element is spaced apart from the capacitors of the first and second pixel circuits in a plan view, and the second light emitting device overlaps the capacitors of the first and second pixel circuits in the plan view.