Stacked Sub-Pixel Electrodes for High-Resolution Naked-Eye 3D Displays
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Solution Overview
Problem
Existing naked eye 3D display technologies suffer from low resolution and inability to achieve high-definition display.
Innovation Solution
A display panel design with independently arranged first electrodes in a stacked manner, featuring a sloping surface structure and a light emitting crosstalk layer to enhance carrier mobility, combined with a specific material composition for the conductive layers to ensure continuous light emission and reduce moire effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional naked eye 3D display technology is used, then 3D display function is achieved, but resolution is low and high-definition display cannot be realized
Solution Approach 1:
Each sub-pixel unit is divided into multiple independently arranged first electrodes (at least two), which are further segmented into stacked conductive layers. This segmentation increases the number of controllable light emission regions, thereby improving display resolution and enabling high-definition 3D display.
Solution Approach 2:
The electrode structure transitions from a single-layer planar configuration to a multi-layer stacked configuration with three-dimensional spatial arrangement. The top conductive layer extends beyond the bottom conductive layer to form a sloping surface, utilizing vertical dimension to increase effective electrode area and improve light emission control for higher resolution.
2Measurement precision
If multiple independently arranged first electrodes are used in each sub-pixel unit, then display resolution is improved, but electrode structure complexity increases
Solution Approach 1:
Multiple conductive layers are merged into a stacked configuration where the top conductive layer and bottom conductive layer are combined to form an integrated electrode structure. This merging approach consolidates multiple functional layers into a unified structure, managing complexity while maintaining high resolution capabilities.
Solution Approach 2:
The stacked conductive layer structure serves multiple functions simultaneously: it provides electrical conduction, forms the sloping surface for light emission control, and enables independent arrangement of multiple first electrodes within each sub-pixel unit. This multi-functionality reduces the need for separate structures, managing overall device complexity.
3Stability of the object's composition
If the top conductive layer extends beyond the bottom conductive layer to form a sloping surface, then light emission continuity is improved, but manufacturing precision requirements increase
Solution Approach 1:
The bottom conductive layer is formed first as a base structure, followed by the deposition of the top conductive layer that extends beyond the bottom layer edges. This preliminary action sequence establishes the foundation for creating the sloping surface, ensuring proper alignment and continuity before final structure completion.
Solution Approach 2:
The conductive layers form a sloping surface with a controlled slope angle (smaller than 60°) at the edges, creating a gradual transition rather than a sharp discontinuity. This curved/angled configuration ensures continuous light emission by eliminating abrupt edges, while the controlled angle reduces manufacturing precision requirements compared to steeper configurations.
4Reliability
If a light emitting crosstalk layer with P-type doping is added, then carrier mobility is improved and moire effects are reduced, but device complexity increases
Solution Approach 1:
A light emitting crosstalk layer with P-type doping is introduced as an intermediary layer between the first electrodes and the light emitting layer. This intermediary layer facilitates carrier transport and reduces crosstalk between adjacent sub-pixels, improving reliability and reducing moire effects while maintaining manageable device complexity through its specific functional role.
Solution Approach 2:
The light emitting crosstalk layer employs P-type doping with a controlled doping concentration (smaller than or equal to 5%) to optimize carrier mobility. By adjusting this parameter, the layer achieves improved electrical properties and reduced moire effects without requiring complex structural modifications, balancing reliability improvement with device complexity management.
Data Source
AI summary
Disclosed in embodiments of the present disclosure are a display panel, a manufacturing method therefor, and a display apparatus. The display panel includes a substrate, the substrate has a plurality of sub-pixel units; each sub-pixel unit includes at least two first electrodes which are independently arranged in the same layer; each first electrode includes at least two conductive layers which are arranged in a stacked manner; an edge of a top conductive layer that is away from the substrate exceeds an edge of a bottom conductive layer; the orthographic projection of the bottom conductive layer on the substrate falls within the range of the orthographic projection of the top conductive layer on the substrate; and a portion of the edge of the top conductive layer exceeding the edge of the bottom conductive layer extends towards one side of the substrate to constitute a sloping surface.