Display Signal Line Load Matching Around Camera Openings
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Solution Overview
Problem
Modern display apparatuses face challenges in maintaining image quality due to structural limitations, such as the presence of non-display areas that can affect the performance of signal lines and lead to display quality degradation.
Innovation Solution
A display apparatus design that incorporates a substrate with a main display area and a load matching part in the non-display peripheral area, which provides electrical load to the signal lines through parasitic capacitance, ensuring consistent gate loading and minimizing brightness variations across the display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If non-display components (camera, sensor) are placed in the non-display area, then the display area can be maximized, but the signal line load distribution becomes uneven causing image quality degradation
Solution Approach 1:
A load matching part is introduced as an intermediary element in the non-display area to mediate the electrical load distribution. This load matching part includes a load matching electrode that forms a parasitic capacitance with the signal line, acting as a mediator to balance the load and compensate for the uneven distribution caused by non-display components, thereby maintaining uniform image quality across the display area
Solution Approach 2:
The electrical parameters (capacitance, resistance) of the signal line are modified by introducing the load matching part. The load matching electrode creates a controlled parasitic capacitance that changes the overall electrical characteristics of the signal line, allowing compensation for the load imbalance caused by non-display components and ensuring consistent signal transmission quality
2Adaptability or versatility
If signal lines pass through non-display areas, then routing flexibility is improved, but load imbalance occurs causing brightness variations
Solution Approach 1:
The load matching part is locally applied only in the non-display area where the signal line passes through. The load matching electrode is positioned specifically in this region to provide localized electrical load compensation, creating different electrical characteristics in different regions of the signal line to compensate for the brightness variations caused by the non-uniform load distribution
Solution Approach 2:
The load matching electrode serves as an intermediary element between the signal line and the non-display components. It provides a controlled electrical interface that balances the load on the signal line in the non-display area, preventing brightness variations while maintaining routing flexibility
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design enhances image display quality by compensating for gate loading deviations caused by non-display areas, resulting in improved brightness consistency and expanded display area utilization.
Implementation Method 1
The load matching part may include a load matching electrode disposed to overlap the signal line, and provides the load to the signal line by parasitic capacitance formed by the signal line and the load matching electrode.
Data Source
AI summary
A display apparatus may include a first plurality of pixels, a substrate, a first signal line, and a load matching device. The substrate may include a first opening, a first non-display area, and a main display area. The first non-displaying area may at least partially surround the first opening. The main display area may support the first plurality of pixels. The first signal line may be electrically connected to the first plurality of pixels, may overlap the main display area, and may overlap the first non-display area. The load matching device may overlap the first non-display area and may provide a first electrical load to the first signal line.