Pixel Electrode Overlap Layout for Higher-Resolution Displays
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The number of thin film transistors and wirings in display devices reduces display quality and resolution, as they are necessary for accurate light emission control but can interfere with the display's performance.
Innovation Solution
A display apparatus design that includes multiple thin film transistors and pixel electrodes with specific overlapping regions and insulating layers to optimize light emission, with a larger pixel electrode region overlapping with the thin film transistors to enhance display quality and resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a large number of thin film transistors and wirings are used to accurately control light emission, then light emission control accuracy is improved, but display quality and resolution deteriorate
Solution Approach 1:
The patent merges the pixel electrode structure with the thin film transistor components by extending the pixel electrode to overlap with the source and drain regions. This integration reduces the need for separate control structures and minimizes the number of discrete elements, thereby improving display quality while maintaining control accuracy.
Solution Approach 2:
The patent utilizes the vertical stacking dimension by disposing the pixel electrode in overlapping regions with the thin film transistor components at different vertical levels. This three-dimensional arrangement allows for accurate electrical control while minimizing the horizontal footprint, thus preserving display resolution and quality.
2Device complexity
If pixel electrode regions are extended to overlap with thin film transistor regions, then display quality is improved, but manufacturing complexity increases
Solution Approach 1:
The pixel electrode is segmented into multiple regions: a first region for light emission and a second region extending to overlap with the thin film transistor. This segmentation allows the electrode to serve dual functions (light emission and electrical control) while maintaining a relatively simple manufacturing process by using standard electrode formation techniques.
Solution Approach 2:
The extended pixel electrode region serves multiple functions: it acts as both the light-emitting electrode and the control electrode for the thin film transistor. This multi-functionality reduces the need for additional separate electrodes or control structures, simplifying the overall manufacturing process while improving display quality.
Data Source
AI summary
A display apparatus is provided by the present invention, the display apparatus includes a first thin film transistor (TFT) disposed in a first pixel region and including a first semiconductor layer and a first gate electrode, where the semiconductor layer includes first source and drain regions; a second TFT disposed in a second pixel region adjacent the first pixel region and including a second semiconductor layer and a second gate electrode, where the second semiconductor layer includes a second source and drain regions; a first pixel electrode disposed in the first pixel region and including a first region where a first light-emitting layer is disposed and a second region extending from the first region and disposed on a first via hole; and a second pixel electrode disposed in the second pixel region and including a third region where a second light-emitting layer is disposed and a fourth region extending from the third region and disposed on a second via hole.