Curved Pixel Electrode Layout for Higher Light-Emitting Element Density
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Solution Overview
Problem
Existing display devices face challenges in maximizing the area occupancy and number of light-emitting elements per pixel, limiting the light emission per unit area.
Innovation Solution
The display apparatus features electrodes with curved side surfaces facing each other, disposed around the peripheral portion of each pixel, increasing the ratio of electrode area per pixel and enhancing the number of light-emitting elements per unit area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If electrodes are arranged in conventional straight configurations, then the electrode structure is simple and easy to manufacture, but the area occupancy and number of light-emitting elements per pixel are limited
Solution Approach 1:
The patent applies curvature to the electrode side surfaces, transforming straight electrodes into curved electrodes with arc-shaped outer sides. This curvature allows electrodes to be disposed around the peripheral portion of each pixel, increasing the area occupancy ratio and enabling more light-emitting elements to be arranged within each pixel area, thereby resolving the contradiction between quantity of light-emitting elements and device complexity.
2Area of stationary object
If electrodes are disposed around the peripheral portion of each pixel with curved side surfaces, then the area occupancy ratio of electrodes per pixel increases, but the electrode design and manufacturing become more complex
Solution Approach 1:
The patent employs curved side surfaces on electrodes with arc-shaped outer sides that can be disposed around the peripheral portion of each pixel. This curvature design maximizes the electrode area occupancy ratio within each pixel while maintaining a systematic structure that can be manufactured using standard semiconductor fabrication processes, thus balancing manufacturing ease with area optimization.
3Illumination intensity
If conventional electrode arrangements are used, then the manufacturing process is simpler, but the light emission per unit area is limited
Solution Approach 1:
The patent utilizes curved electrodes with arc-shaped outer sides disposed around the peripheral portion of each pixel, which increases the area occupancy ratio of electrodes per pixel. This configuration enables a greater number of light-emitting elements to be arranged within each pixel, thereby enhancing the light emission per unit area while maintaining a structured and manufacturable design.
Data Source
AI summary
A display apparatus includes: a substrate including a plurality of pixels; an electrode unit in each of the pixels of the substrate and including: a first electrode having a first outer side having a center of curvature and a curved shape; and a second electrode having a second outer side having a curved shape corresponding to the first outer side and spaced apart from and facing the first electrode; and a plurality of light-emitting elements between the first electrode and the second electrode. The center of curvature of the first electrode is on a peripheral portion of the pixel, and the first outer side of the first electrode faces a center of the pixel.