Viewing Angle Control Element With Segmented Electrodes
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Solution Overview
Problem
Existing viewing angle control technologies for display panels are limited in their ability to dynamically adjust the viewing angle, leading to suboptimal performance in terms of both wide and narrow viewing angles, and often result in moire patterns due to mismatched pixel and projection pitch.
Innovation Solution
A viewing angle control element comprising a first and second substrate with an electrochromic layer and transparent electrodes, where the electrodes are electrically independent and strategically positioned to control the deposition of silver ions, forming a light-shielding layer that adjusts the viewing angle by applying potentials, allowing for both wide and narrow viewing modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single transparent electrode is used to control electrochromic material deposition, then the device structure is simple, but the viewing angle control is limited and cannot be dynamically adjusted
Solution Approach 1:
The single transparent electrode is divided into multiple transparent electrodes (first transparent electrode and second transparent electrode) that are electrically independent of each other. Each electrode can be controlled separately to deposit electrochromic materials on different sides of the projection, enabling independent control of viewing angles in different directions and achieving adaptable viewing angle adjustment.
2Manufacturing precision
If the pitch of projections is fixed to match pixel pitch, then manufacturing is simplified, but moire patterns occur and display quality deteriorates
Solution Approach 1:
The projection structure is designed with different local characteristics: the projection has a first side surface and a second side surface with potentially different orientations and properties. By controlling electrochromic material deposition on different side surfaces independently through separate transparent electrodes, the system can locally adjust light shielding properties to eliminate moire patterns while maintaining overall structural integrity.
3Manufacturing precision
If electrochromic materials are deposited on all projection surfaces, then light shielding is maximized, but the viewing angle control precision is reduced and cannot accommodate different observer positions
Solution Approach 1:
The system enables dynamic control of electrochromic material deposition by applying potentials to different transparent electrodes independently. The first transparent electrode can control deposition on the first side surface of the projection, while the second transparent electrode controls deposition on the second side surface. This dynamic control allows precise adjustment of viewing angles according to different observer positions and requirements, rather than fixed uniform deposition.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables precise control of viewing angles, reducing moire patterns and improving display quality by allowing independent adjustment of viewing modes based on observer position, thereby enhancing the display's visibility and usability.
Implementation Method 1
an electrochromic layer provided between the first base and the second base
Implementation Method 2
controlling the deposition of silver ions, forming a light-shielding layer that adjusts the viewing angle by applying potentials
Data Source
AI summary
According to one embodiment, a viewing angle control element includes an electrochromic layer, a plurality of projections formed on a first base, a first area and a second area provided on each of the projections, a first transparent electrode provided on the first area, and a second transparent electrode provided on the second area, wherein the first transparent electrode and the second transparent electrode are electrically independent of each other.