Privacy Filter Display Panel with Tilted Polymer Networks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional anti-spy display technologies are incomplete in terms of adjustable viewing angle range and cannot automatically switch between anti-spy and normal display modes without affecting display quality.
Innovation Solution
A display panel comprising a panel body, a first polarizer, a dimming liquid crystal layer with polymer networks and liquid crystal molecules arranged in a specific direction, and a second polarizer, which can switch between two modes by controlling the orientation of liquid crystal molecules to selectively transmit light at different viewing angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a special patterned design is performed on an electrode layer to achieve anti-spy function, then anti-spy capability is improved, but display effects are affected leading to decreased contrast, color cast, and poor resolution
Solution Approach 1:
The patent changes the physical state and orientation parameters of liquid crystal molecules to achieve anti-spy functionality. By controlling the tilt angle and orientation direction of liquid crystal molecules in the polymer network, the display achieves selective light transmission at specific viewing angles without modifying the electrode layer pattern, thus maintaining display quality while improving anti-spy capability
Solution Approach 2:
The patent uses a composite structure combining polymer networks with liquid crystal molecules. This composite material approach allows the integration of anti-spy functionality into the liquid crystal layer itself, rather than modifying the electrode layer. The polymer network provides structural support while the liquid crystal molecules provide the switching functionality, achieving both anti-spy capability and good display quality
2Reliability
If anti-spy protection film is used, then information privacy protection is improved, but automatic switching between anti-spy and normal display cannot be performed
Solution Approach 1:
The patent implements dynamic switching capability by using voltage-controlled liquid crystal molecules. The liquid crystal layer can transition between different states (tilted and aligned) in response to applied voltage, enabling automatic switching between anti-spy mode and normal display mode. This dynamic behavior allows the system to adapt to different operational requirements without manual intervention
Solution Approach 2:
The liquid crystal layer performs the switching function autonomously based on voltage input. The polymer network structure and liquid crystal molecule orientation naturally respond to electrical signals, enabling the system to automatically transition between modes without requiring external mechanical or manual switching mechanisms
3Reliability
If conventional anti-spy technologies are used, then anti-spy function is achieved, but adjustable viewing angle range is incomplete
Solution Approach 1:
The patent achieves adjustable viewing angle range by controlling the tilt angle parameter of liquid crystal molecules in the polymer network. By adjusting the tilt angle between 0° and 90°, the system can dynamically control the viewing angle range, enabling the display to switch between narrow viewing angle (anti-spy mode) and wide viewing angle (normal display mode) as needed
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
The display panel can selectively transmit light at different viewing angles, providing effective anti-spy functionality at specific angles while allowing for a general display mode, thus improving applicability and display quality.
Implementation Method 1
a dimming liquid crystal layer, disposed on one side of the first polarizer away from the panel body and including a plurality of polymer networks and a plurality of liquid crystal molecules distributed in the polymer networks, wherein the plurality of polymer networks are arranged in a first direction, and the first direction tilts relative to a normal direction of the first polarizer
Implementation Method 2
a first polarizer, disposed on one side of the panel body; and a second polarizer, disposed on one side of the dimming liquid crystal layer away from the first polarizer, an optical axis direction of the first polarizer being parallel to an optical axis direction of the second polarizer
Data Source
AI summary
A privacy filter, a display panel, and a display device are provided. The display panel includes a panel body, and a first polarizer, a dimming liquid crystal layer, and a second polarizer that are sequentially disposed on one side of the panel body. The dimming liquid crystal layer includes a plurality of polymer networks and a plurality of liquid crystal molecules distributed in the polymer networks, wherein the plurality of polymer networks are arranged in a first direction, the first direction tilts relative to a normal direction of the first polarizer, and an optical axis direction of the first polarizer is parallel to an optical axis direction of the second polarizer.