Light Control Panel Layout for Display Anti-Peeping Switching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional anti-peeping technologies, such as dual backlight systems and electronically controlled birefringent liquid crystal cells, are limited in effectiveness and energy efficiency, particularly for large-sized displays, and fail to adequately prevent light from being observed at wide viewing angles.
Innovation Solution
A display module comprising a display panel and a first light control panel with a specific alignment and polarization configuration of liquid crystals, electrodes, and polarizers, allowing for controlled light propagation to achieve anti-peeping and shared display modes by adjusting the angle of light emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional dual backlight system is used for anti-peeping, then viewing angle can be switched between wide and narrow, but energy consumption increases and it is not suitable for large-sized display
Solution Approach 1:
The invention divides the display system into two independent panels: a display panel and a light control panel. The light control panel is further segmented into multiple light control liquid crystal layers, each capable of independently controlling light propagation in different directions. This segmentation allows the system to achieve anti-peeping functionality without requiring a complex dual backlight system, thereby reducing energy consumption while maintaining viewing angle adaptability.
Solution Approach 2:
The invention introduces a new dimensional approach by adding a dedicated light control panel with multiple liquid crystal layers that control light propagation in different spatial directions. Instead of switching backlight modes, the system uses the third dimension (depth) with multiple liquid crystal layers to redirect light at different angles, enabling wide viewing angle and anti-peeping modes simultaneously without increasing energy consumption.
2Adaptability or versatility
If electronically controlled birefringent liquid crystal cell is used, then viewing angle control is attempted, but anti-peeping effect is insufficient due to restriction of liquid crystal deflection range
Solution Approach 1:
The light control panel is divided into multiple independent light control liquid crystal layers, each with its own liquid crystal molecules that can be independently controlled. This segmentation allows each layer to contribute to light deflection in a specific direction, collectively achieving a broader deflection range and more effective anti-peeping capability compared to a single liquid crystal cell.
Solution Approach 2:
The invention uses composite liquid crystal structures with different alignment configurations across multiple layers. Each layer has liquid crystal molecules aligned in specific directions (different pretilt angles and azimuth angles), creating a composite structure that collectively provides enhanced light deflection capability and superior anti-peeping effect.
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 solution provides effective anti-peeping capabilities with reduced power consumption and improved display brightness, enabling flexible switching between modes while enhancing the anti-peeping effect compared to conventional methods.
Implementation Method 1
electronically controlled birefringent liquid crystal cell
Implementation Method 2
first electrode and a second electrode arranged opposite to each other and a first light control liquid crystal layer arranged between the first base and the second base
Implementation Method 3
A polarization axis direction of the first polarizer is perpendicular to a polarization axis direction of the second polarizer
Implementation Method 4
An alignment direction of the first alignment layer is parallel to an alignment direction of the second alignment layer, an angle between the alignment direction of the first alignment layer and the polarization axis direction of the first polarizer is α
Data Source
AI summary
A display module and a display apparatus. The display module includes a display panel and a first light control panel. The first light control panel includes a first base and a second base arranged opposite to each other and a first light control liquid crystal layer arranged between the first base and the second base. The first base includes a first substrate, a first electrode, a first alignment layer, and a first polarizer. The second base includes a second substrate, a second electrode, a second alignment layer, and a second polarizer. A polarization axis of the first polarizer is perpendicular to a polarization axis of the second polarizer. An alignment direction of the first alignment layer is parallel to an alignment direction of the second alignment layer. An angle between the alignment direction of the first alignment layer and the polarization axis of the first polarizer is α, 90°>α>0°.