Liquid Crystal Display Panel Anti-Peeping via Pixel Electrode Segmentation
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Solution Overview
Problem
Conventional liquid crystal display panels face challenges in providing effective anti-peeping functionality without compromising display quality, optical properties, thickness, or increasing cost and process complexity.
Innovation Solution
A liquid crystal display panel design featuring a first and second substrate with a liquid crystal layer, and pixel electrodes with distinct patterns in different regions, allowing for adjustable luminous flux distribution to switch between wide and narrow viewing modes without additional components or manufacturing changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If additional anti-peeping film is added to the substrate surface, then anti-peeping effect is improved, but display quality and optical properties deteriorate
Solution Approach 1:
The display panel is divided into multiple viewing angle regions (first viewing angle region, second viewing angle region, etc.) with different liquid crystal molecule tilt angles. Each region independently controls light emission in specific directions, achieving anti-peeping effect without adding external films that would compromise display quality.
Solution Approach 2:
Different regions of the display panel are assigned different optical properties through varied liquid crystal alignment. The first viewing angle region has liquid crystal molecules tilted at a first angle, while the second viewing angle region has molecules tilted at a second angle, creating localized viewing characteristics that provide anti-peeping protection without affecting overall display quality.
2Adaptability or versatility
If backlight source control with diffusion sheet is used, then viewing angle control is improved, but anti-peeping effect is insufficient
Solution Approach 1:
The liquid crystal molecules dynamically adjust their light modulation based on viewing angle. By controlling the tilt angles in different regions, the display dynamically adapts to provide wide viewing angles for authorized users while automatically restricting visibility for unauthorized viewers, achieving both viewing angle control and effective anti-peeping.
3Object-affected harmful factors
If viewing angle control module is added, then anti-peeping effect is improved, but device complexity and cost increase
Solution Approach 1:
The anti-peeping functionality is merged with the existing display structure by integrating multiple viewing angle regions directly into the liquid crystal display panel. This eliminates the need for separate anti-peeping modules or additional control systems, achieving anti-peeping effect while maintaining simple device architecture and low cost.
Solution Approach 2:
The liquid crystal display panel serves multiple functions simultaneously: it displays information, provides wide viewing angles for authorized users, and prevents unauthorized viewing. The multi-region liquid crystal alignment structure accomplishes both display and security functions within a single integrated system, avoiding additional components.
4Object-affected harmful factors
If viewing angle control module is added, then anti-peeping effect is improved, but thickness and weight increase
Solution Approach 1:
The anti-peeping functionality is merged with the existing display structure by integrating multiple viewing angle regions directly into the liquid crystal display panel. This eliminates the need for separate anti-peeping modules or additional control systems, achieving anti-peeping effect while maintaining simple device architecture and low cost.
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 design achieves an excellent anti-peeping effect by modifying pixel electrode patterns, maintaining display quality and optical properties while avoiding increased costs and complexity, ensuring effective anti-peeping functionality.
Implementation Method 1
a liquid crystal layer 16, a plurality of first regions 1, a plurality of second regions 2, a plurality of first pixel electrodes 32 and a plurality of second pixel electrodes 34. The second substrate 14 is disposed oppositely to the first substrate 13. The liquid crystal layer 16 is disposed between the first substrate 13 and the second substrate 14
Implementation Method 2
Each of the first pixel electrodes 32 is disposed in each of the first regions 1, respectively; each of the second pixel electrodes 34 is disposed in each of the second regions 2, respectively
Implementation Method 3
The first pixel electrode and the second pixel electrode have different electrode patterns, each of the first pixel electrodes 32 comprises a first main pixel electrode 321 and a first sub pixel electrode 322, each of the second pixel electrodes 34 comprises a second main pixel electrode 341 and a second sub pixel electrode 342
Data Source
AI summary
A liquid crystal display panel includes a first substrate, a second substrate, a liquid crystal layer, a plurality of first regions and a plurality of second regions. The first regions and the second regions are formed on the first substrate and the second substrate. In a narrow viewing mode, the luminous flux of the first regions along a first viewing direction is different from that of the first regions along a second viewing direction opposite to the first viewing direction, and the luminous flux of the second regions along the first viewing direction is substantially different from that of the first regions along the first viewing direction.