Display Panel Layout for High-Transmittance Component Areas
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Solution Overview
Problem
Display devices face challenges in expanding their display area while accommodating electronic components, as existing designs often compromise on image quality and light transmittance due to the integration of auxiliary pixels and storage capacitors.
Innovation Solution
A display panel design featuring a substrate with a main display area, a component area, and a peripheral area, where auxiliary sub-pixels and pixel circuits with larger storage capacitors are strategically placed to ensure high light transmittance and efficient signal transfer, using connecting lines with different materials and layers to optimize conductivity and transmittance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If auxiliary sub-pixels and pixel circuits are integrated into the component area to expand the display area, then the display area is expanded, but the light transmittance and image quality deteriorate
Solution Approach 1:
The display panel is divided into three distinct areas: main display area, component area, and peripheral area. Each area has dedicated sub-pixels and pixel circuits optimized for its specific function, allowing the component area to display images while maintaining high light transmittance through strategic placement of auxiliary sub-pixels with larger pixel circuits in the peripheral area.
Solution Approach 2:
Different regions of the display panel are assigned different qualities and functions. The component area uses auxiliary sub-pixels with larger pixel circuits and higher capacitance values optimized for light transmittance, while the main display area uses standard sub-pixels optimized for image quality. This local optimization resolves the contradiction between expanded display area and light transmittance.
2Illumination intensity
If auxiliary pixel circuits with larger storage capacitors are placed in the peripheral area, then the light transmittance in the component area is improved, but the device complexity increases
Solution Approach 1:
The auxiliary pixel circuits in the peripheral area are merged with the main pixel circuits through connecting lines that share common signal lines (scan lines, data lines, emission control lines). This merging approach reduces the number of independent circuits needed while still providing the necessary functionality for both main and auxiliary sub-pixels, thereby reducing overall device complexity.
Solution Approach 2:
The pixel circuits are designed with multi-functionality to handle both main sub-pixel and auxiliary sub-pixel control. The same pixel circuit can control multiple sub-pixels through shared connecting lines and common signal lines, reducing the total number of circuits needed and simplifying the overall device structure while maintaining high light transmittance.
3Reliability
If connecting lines with different materials are used to optimize conductivity and transmittance, then the signal transfer efficiency is improved, but the manufacturing complexity increases
Solution Approach 1:
The connecting lines use different material compositions (e.g., ITO, IZO, AZO) with different conductivity and transmittance parameters optimized for their specific locations. Lines in the component area use materials with higher transmittance, while lines in the peripheral area use materials with higher conductivity. This parameter optimization improves signal transfer efficiency while the materials are still compatible with standard display manufacturing processes.
Data Source
AI summary
A display panel includes: a substrate including a main display area, a component area, and a peripheral area; a main sub-pixel at the main display area on the substrate; a main pixel circuit connected to the main sub-pixel, and including a main storage capacitor; an auxiliary sub-pixel at the component area on the substrate; an auxiliary pixel circuit at the peripheral area on the substrate, and including an auxiliary storage capacitor; and a connecting line connecting the auxiliary sub-pixel to the auxiliary pixel circuit. A capacity of the auxiliary storage capacitor is greater than a capacity of the main storage capacitor.