Transparent Storage Capacitor for Rear Optical Elements in Displays
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Solution Overview
Problem
Display devices face challenges in integrating optical elements without increasing the bezel area or reducing the active display area, which affects the performance and functionality of the device.
Innovation Solution
The implementation of a display device with a substrate having distinct areas for first and second subpixels, where the second subpixels have a higher transparency storage capacitor, allowing an optical element to be positioned on the rear surface without compromising the active display area, by using different semiconductor materials for the capacitor electrodes and optimizing the structure of the subpixels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an optical device is disposed in the display device, then diverse functions are provided, but the bezel area increases or the active area decreases
Solution Approach 1:
The patent merges the optical device with the display panel structure by integrating it into the rear surface of the substrate. The optical device is combined with the substrate, encapsulation layers, and buffer layers to form a unified structure, allowing both display and optical functions to coexist within the same area without increasing bezel size or reducing active display area.
Solution Approach 2:
The patent positions the optical device on the rear surface of the substrate, utilizing the z-dimension (depth) rather than consuming lateral space. By placing the optical device in the third dimension behind the display panel, the design accommodates additional functionality without affecting the two-dimensional active display area or bezel dimensions.
2Adaptability or versatility
If an optical device is disposed in the display device, then diverse functions are provided, but the bezel area increases
Solution Approach 1:
The optical device is merged with the display panel's structural components, including the substrate, encapsulation layers, and buffer layers. This integration allows the optical device to share the same physical space and structural framework as the display panel, eliminating the need for additional bezel area.
Solution Approach 2:
The optical device is positioned on the rear surface of the substrate, utilizing the depth dimension rather than lateral space. This three-dimensional integration allows the optical device to be accommodated within the existing panel footprint without expanding the bezel area.
3Ease of manufacture
If a storage capacitor with lower transparency is used, then manufacturing is simplified, but light transmission is reduced
Solution Approach 1:
The patent applies different transparency characteristics to different regions of the display panel. The second area, where the optical device is positioned, uses a storage capacitor with higher transparency to allow light transmission to the optical device. The first area uses a storage capacitor with lower transparency, optimizing each region for its specific function.
Solution Approach 2:
The patent changes the transparency parameter of the storage capacitor based on the functional requirements of different areas. By adjusting the transparency parameter of the storage capacitor in the second area, the design optimizes light transmission for the optical device while maintaining manufacturing feasibility.
Data Source
AI summary
Embodiments of the disclosure relate to a display device. Since the capacitor disposed in the subpixel in the area overlapping the optical element positioned on the rear surface of the substrate of the display panel is disposed using a semiconductor material, the transparency of the area may be enhanced, and the performance of the optical function performed by the optical element forward of the surface where the display panel displays images from the rear surface of the display panel may be enhanced.