Display Substrate Pixel Circuit Arrangement for Light Transmittance
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Solution Overview
Problem
Current display technologies face challenges in achieving high light transmittance while maintaining efficient pixel circuit arrangement and power supply configurations, particularly in Full Display With Camera (FDC) applications, where the integration of pixel circuits and power lines can hinder light transmission.
Innovation Solution
The display substrate incorporates a base substrate with a specific arrangement of data lines and power supply lines, where two first pixel circuits are positioned on opposite sides of a shared power supply line, allowing for improved light transmittance by minimizing overlap and mutual interference, and includes additional signal lines and transistors optimized for space-saving designs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If pixel circuits and power supply lines are integrated in conventional arrangements, then device functionality is achieved, but light transmittance is reduced due to overlap and interference
Solution Approach 1:
The pixel circuit group is divided into multiple independent pixel circuits (first pixel circuit and second pixel circuit) that are spatially separated and positioned on opposite sides of the power supply line. This segmentation allows each pixel circuit to be independently arranged without overlapping with power supply lines, thereby improving light transmittance while maintaining circuit functionality.
Solution Approach 2:
The patent transitions from a conventional two-dimensional planar arrangement where pixel circuits and power lines occupy the same space to a multi-dimensional layout where pixel circuits are positioned in different spatial zones relative to the power supply line. By extending the arrangement into the spatial dimension perpendicular to the power line, the design eliminates overlap and enhances light transmission through the display region.
2Area of stationary object
If pixel circuits are arranged to share power supply lines, then space is saved, but interference between data lines and power lines increases
Solution Approach 1:
The harmful interaction between data lines and power supply lines is extracted and eliminated by separating their spatial paths. Data lines are routed through first non-display regions while power supply lines extend through second non-display regions, ensuring that these conductive elements do not overlap or interfere with each other in the display region, thus removing the harmful electromagnetic interference while maintaining space efficiency.
Solution Approach 2:
Non-display regions serve as intermediary zones that mediate the routing of data lines and power supply lines. These regions act as buffer zones where lines can be positioned without affecting the display quality, allowing efficient space utilization in the display region while preventing interference through proper spatial separation in the non-display regions.
3Ease of manufacture
If data lines and power supply lines overlap in the display region, then routing is simplified, but light transmission is hindered
Solution Approach 1:
The display region is segmented into multiple sub-regions (first display region and second display region) with different functional assignments. The first pixel circuit group is positioned in the first display region with data lines routed through first non-display regions, while the second pixel circuit group is positioned in the second display region with power supply lines routed through second non-display regions. This segmentation allows simplified routing within each region while preventing overlap in the display areas, thus maintaining both manufacturing ease and light transmittance.
Data Source
AI summary
A display substrate, comprising: a substrate, at least one pixel circuit group, multiple data lines, and a first power line. The pixel circuit group comprises two first pixel circuits adjacent to each other in a first direction. The pixel circuit group is electrically connected to the first power line. One of the first pixel circuits in the pixel circuit group is electrically connected to a first data line, and the other one is electrically connected to a second data line. The first data line, the second data line, and the first power line all extend in a second direction. The first and second data lines are respectively on two opposite sides of the first power line in the first direction and are both adjacent to the first power line. The two first pixel circuits in the pixel circuit group are respectively on the two sides of the first power line.