Pixel Electrode Wiring Layout for High-Aperture VR Displays
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display devices for virtual reality (VR) or augmented reality (AR) face issues with low resolution, high power consumption, and low luminance, which affect the sense of reality and immersion, and require high aperture ratios for improved display quality.
Innovation Solution
A display device design incorporating a first wiring, a second wiring, and a third wiring, where the first and second wirings supply source and gate signals, respectively, and the third wiring overlaps with the pixel electrode to block electrical noise, allowing for increased pixel electrode area and aperture ratio, thereby enhancing resolution, luminance, and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the pixel electrode area is increased to improve aperture ratio and luminance, then the display quality and luminance are improved, but the electrical noise from wirings increases and interferes with pixel operation
Solution Approach 1:
A third wiring supplied with constant potential is introduced as an intermediary between the first wiring (source signal) and the pixel electrode. This intermediary wiring blocks electrical noise from the source signal wiring from reaching the pixel electrode, while allowing the pixel electrode area to be maximized for high aperture ratio and luminance.
Solution Approach 2:
The wiring structure is segmented into multiple independent wirings: first wiring for source signal, second wiring for gate signal, and third wiring for constant potential. This segmentation allows each wiring to have specific functions and positions, with the third wiring strategically placed to shield the pixel electrode from noise while maintaining large electrode area.
2Measurement precision
If the resolution is increased for high-quality display, then the display quality is improved, but the pixel electrode area decreases leading to lower aperture ratio and luminance
Solution Approach 1:
The third wiring is positioned in the vertical dimension between the first wiring and the pixel electrode, creating a three-layer structure. This dimensional arrangement allows the pixel electrode to extend closer to the first wiring without direct contact, maximizing the electrode area and aperture ratio while maintaining high resolution through the shielding effect of the intermediate wiring.
3Illumination intensity
If the aperture ratio is increased to improve luminance, then the luminance and display quality are improved, but the wiring layout complexity increases
Solution Approach 1:
The third wiring supplied with constant potential serves multiple functions: it acts as a shield to block electrical noise from the source signal, provides a reference potential for the pixel electrode, and enables the pixel electrode to be positioned optimally for maximum area. This multi-functionality reduces the need for additional dedicated shielding structures, simplifying the overall wiring layout while achieving high aperture ratio.
Data Source
AI summary
A display device with high resolution is provided. A display device with low power consumption is provided. A display device with high luminance is provided. A display device with a high aperture ratio is provided. The display device includes a first wiring, a second wiring, a third wiring, and a pixel electrode. The first wiring extends in a first direction and is supplied with a source signal. The second wiring extends in a second direction intersecting the first direction and is supplied with a gate signal. The third wiring is supplied with a constant potential. The first wiring and the pixel electrode overlap with each other with the third wiring therebetween.