Display Substrate Layout With Slitted Electrodes for Lower Coupling
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Solution Overview
Problem
Existing 3D display technologies face challenges in reducing coupling capacitance between common electrode strips and signal lines, leading to increased manufacturing costs and limitations in producing large-size display products due to the use of thick organic films, which also result in reduced aperture ratios and light efficiency.
Innovation Solution
The display substrate design includes common electrode strips arranged in blocks with slits and bent signal lines, reducing vertical overlap and coupling capacitance without organic films, and incorporating shade strips and pixel electrodes with slits to minimize dark spots and improve light efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If thick organic films are used to reduce coupling capacitance between common electrode strips and signal lines, then coupling capacitance is reduced, but manufacturing cost increases and large-size display production is limited
Solution Approach 1:
The common electrode strip is segmented into multiple common electrode blocks with slits between them. This segmentation reduces the overlapping area with signal lines, thereby reducing coupling capacitance without requiring thick organic films, enabling cost-effective large-size display production
Solution Approach 2:
The signal line is designed with a bent shape instead of a straight line, changing its spatial arrangement to reduce vertical overlap with common electrode strips. This dimensional rearrangement reduces coupling capacitance while maintaining electrical functionality and enabling standard manufacturing processes
2Reliability
If common electrode strips are designed to reduce coupling capacitance, then coupling capacitance is reduced, but aperture ratio and light efficiency decrease
Solution Approach 1:
Slits are selectively positioned in the common electrode strip at locations where signal lines bend and overlap occurs. This localized modification reduces coupling capacitance only where needed, while maintaining the integrity and light-transmitting properties of the majority of the common electrode structure
Solution Approach 2:
The signal line is designed with a bent shape that follows the contour of the common electrode blocks, allowing it to navigate around the slits while maintaining optimal electrical connection and minimizing impact on aperture ratio and light efficiency
Data Source
AI summary
A display substrate, a display panel and a display apparatus are provided. The display substrate includes: a base substrate; signal lines disposed at a side of the base substrate and arranged in a first direction, and an orthographic projection of each signal line on the base substrate is in a shape of a bent line; and a plurality of common electrode strips, where the plurality of common electrode strips and the signal lines are disposed at the same side of the base substrate and are insulated from each other. Each common electrode strip includes a plurality of common electrode blocks arranged in sequence in the first direction, a first slit is provided between adjacent common electrode blocks, and orthographic projections of at least part of the signal lines on the base substrate are located within orthographic projections of the first slits on the base substrate.