Display Panel Overlap Ratio Adjustment for Under-Display Camera
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Solution Overview
Problem
Display panels face challenges in achieving optimal display quality due to varying application conditions, which require adjustments in pixel design and overlap ratios to balance storage capacitance and driving ability.
Innovation Solution
The implementation of a display panel with a normal area and a functional area, where the functional area has a reduced second overlap ratio for its pixels compared to the normal area, reducing storage capacitance and enhancing pixel driving ability, and incorporating an optical sensing module for improved display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the overlap ratio of pixels is increased to improve storage capacitance, then the storage capacitance increases, but the pixel driving ability deteriorates
Solution Approach 1:
The patent applies local quality by differentiating the overlap ratios in different display areas. The normal display area uses a first overlap ratio that provides sufficient storage capacitance for standard pixels, while the under-display camera area uses a second overlap ratio that is smaller than the first, specifically optimized to reduce interference with optical sensing. This localized differentiation resolves the contradiction by allowing each area to have the appropriate capacitance level for its specific function.
Solution Approach 2:
The display panel is segmented into at least two distinct areas: a normal display area and an under-display camera area. Each area is assigned different overlap ratio parameters (first overlap ratio for normal area, second overlap ratio for camera area). This segmentation allows the system to optimize storage capacitance in the normal area while minimizing optical interference in the camera area, thereby resolving the contradiction between capacitance requirements and optical sensing performance.
2Quantity of substance
If the overlap ratio of pixels in the functional area is increased to match the normal area, then the storage capacitance increases, but the optical sensing performance deteriorates
Solution Approach 1:
The patent implements local quality by assigning different overlap ratios to different functional regions. The under-display camera area (functional area) uses a second overlap ratio that is smaller than the first overlap ratio used in the normal display area. This localized adjustment reduces the capacitance in the camera area specifically, minimizing optical interference while preserving sufficient capacitance in the normal area for proper display operation.
Solution Approach 2:
The patent changes the overlap ratio parameter specifically in the under-display camera area by setting the second overlap ratio to be smaller than the first overlap ratio. This parameter modification directly addresses the optical sensing interference issue by reducing the capacitance-related optical interference in the camera area, while maintaining adequate capacitance in the normal display area through the first overlap ratio.
3Ease of manufacture
If a uniform overlap ratio is used across the entire display panel, then the manufacturing process is simplified, but the display quality and optical sensing performance cannot be optimized simultaneously
Solution Approach 1:
The patent applies local quality by defining different overlap ratio requirements for different areas of the display panel. The normal display area uses a first overlap ratio optimized for display performance, while the under-display camera area uses a second overlap ratio optimized for optical sensing. This localized differentiation allows the system to achieve both high display quality and optimal optical sensing performance, overcoming the limitations of a uniform overlap ratio approach.
Solution Approach 2:
The display panel is segmented into multiple areas with different overlap ratio specifications. This segmentation enables independent optimization of each area's performance characteristics while maintaining a relatively simple manufacturing process by using standard fabrication techniques with area-specific parameter adjustments. The segmented approach resolves the contradiction by allowing performance optimization without proportionally increasing manufacturing complexity.
Data Source
AI summary
The disclosure provides a display panel, including a normal area and a functional area. The normal area includes a plurality of normal pixels, and each normal pixel has a normal pixel electrode and a normal common electrode. The normal pixel electrode and the normal common electrode are configured in a manner that each normal pixel has a first overlap ratio. The functional area includes a plurality of functional pixels, and each functional pixel has a functional pixel electrode and a functional common electrode. The functional pixel electrode and the functional common electrode are configured in a manner that each functional electrode has a second overlap ratio. The second overlap ratio of at least a part of the functional pixels is less than or equal to the first overlap ratio of at least a part of the normal pixels.