Display Panel Viewing Angle Adjustment Dimming Liquid Crystal Cell
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional display devices with peep-proof functions lack the ability to switch between peep-proof and non-peep-proof modes effectively, and when they do, the brightness at wide viewing angles is compromised, resulting in a suboptimal display effect.
Innovation Solution
A display panel with a viewing angle adjustment liquid crystal cell and a dimming liquid crystal cell, where the dimming liquid crystal cell scatters incident light in the second mode to enhance side-view brightness, improving the display effect under wide viewing angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a liquid crystal dimming box is added under the display panel to enable switching between peep-proof and non-peep-proof modes, then the ability to switch privacy modes is improved, but the brightness of the side viewing angle becomes relatively low in wide viewing angle mode
Solution Approach 1:
The display panel is divided into two independent liquid crystal cells: a viewing angle adjustment liquid crystal cell for controlling privacy mode switching, and a dimming liquid crystal cell for adjusting brightness. This segmentation allows each cell to be optimized for its specific function, enabling mode switching while maintaining side viewing angle brightness through the dedicated dimming cell with light scattering particles.
Solution Approach 2:
The dimming liquid crystal cell incorporates light scattering particles (TiO2, SiO2, or ZrO2) with specific refractive indices to create localized light scattering properties. This local quality enhancement ensures that light is scattered appropriately in the wide viewing angle mode to maintain brightness, while the viewing angle adjustment cell handles the privacy switching function independently.
2Adaptability or versatility
If a liquid crystal dimming box is added to enable mode switching, then privacy mode switching is achieved, but the display effect under wide viewing angle deteriorates
Solution Approach 1:
By separating the display panel into two specialized liquid crystal cells, the viewing angle adjustment cell can focus on privacy mode switching while the dimming cell with light scattering particles ensures optimal display quality in wide viewing angle mode, preventing deterioration of display effects.
Solution Approach 2:
The dimming liquid crystal cell uses light scattering particles with specific refractive indices (TiO2: 2.6-2.9, SiO2: 1.46, ZrO2: 2.4-2.6) to control light scattering parameters. This parameter optimization ensures that the display maintains high quality and visibility in wide viewing angle mode while enabling mode switching capability.
3Area of moving object
If the viewing angle is widened in non-peep-proof mode, then viewing angle is improved, but side-view brightness decreases
Solution Approach 1:
The dimming liquid crystal cell contains light scattering particles (TiO2, SiO2, or ZrO2) with specific refractive indices that create localized light scattering effects. This local quality enhancement ensures that when the viewing angle is widened, light is scattered appropriately to maintain brightness levels across the expanded viewing area.
Solution Approach 2:
The dimming liquid crystal cell uses composite materials consisting of liquid crystal molecules combined with light scattering particles (TiO2, SiO2, or ZrO2). This composite structure enables the cell to scatter light effectively across wide viewing angles while maintaining brightness, resolving the contradiction between viewing angle expansion and brightness maintenance.
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 allows for a wider viewing angle in the non-peep-proof mode while maintaining a narrower angle in the peep-proof mode, significantly improving the display effect by increasing side-view brightness and maintaining the desired privacy settings.
Implementation Method 1
the dimming liquid crystal cell is configured to scatter incident light in the second mode
Implementation Method 2
the viewing angle adjustment liquid crystal cell includes a first liquid crystal layer including a polymer network and first liquid crystal molecules distributed in the polymer network; the dimming liquid crystal cell includes a second liquid crystal layer including a polymer and second liquid crystal molecules distributed in the polymer
Implementation Method 3
a first liquid crystal layer including a polymer network and first liquid crystal molecules distributed in the polymer network; a second liquid crystal layer including a polymer and second liquid crystal molecules distributed in the polymer
Data Source
AI summary
The present application embodiment discloses a display panel and a display device. The display panel includes a first mode and a second mode. The viewing angle of the display panel in the first mode is smaller than the viewing angle of the display panel in the second mode; the dimming liquid crystal cell is overlapped with the viewing angle adjustment liquid crystal cell; in the second mode, the dimming liquid crystal cell is used to scatter the incoming light; the panel body is arranged on a light-emitting side of the viewing angle adjustment liquid crystal cell and the dimming liquid crystal cell.