Liquid Crystal Display Insulating Layer Thickness Variation
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Solution Overview
Problem
Current horizontal electric field display modes, such as fringe field switching, face challenges in improving light transmittance.
Innovation Solution
The proposed display device incorporates a liquid crystal display panel with a varying thickness of an insulating layer between the pixel and common electrodes, creating different horizontal electric field components across distinct display areas, thereby enhancing light transmittance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a horizontal electric field display mode such as fringe field switching is used, then large viewing angles are achieved, but light transmittance needs to be improved
Solution Approach 1:
The patent applies local quality by creating different insulating layer thicknesses in different display areas. The first display area has a greater insulating layer thickness to reduce horizontal electric field components and improve light transmittance, while the second display area maintains a smaller thickness to preserve horizontal electric field components for wide viewing angles. This localized differentiation resolves the contradiction between light transmittance and viewing angle performance.
Solution Approach 2:
The patent segments the display area into at least two distinct regions with different insulating layer thicknesses. This segmentation allows each region to be optimized for its specific function: one region for light transmittance and another for viewing angle, thereby resolving the overall contradiction at the system level.
2Illumination intensity
If the insulating layer thickness is increased in the first display area, then light transmittance is improved, but the horizontal electric field component is reduced
Solution Approach 1:
The patent applies local quality by creating different insulating layer thicknesses in different display areas. The first display area has a greater insulating layer thickness to reduce horizontal electric field components and improve light transmittance, while the second display area maintains a smaller thickness to preserve horizontal electric field components for wide viewing angles. This localized differentiation resolves the contradiction between light transmittance and viewing angle performance.
3Illumination intensity
If the insulating layer thickness is varied across display areas, then light transmittance is enhanced, but device complexity increases
Solution Approach 1:
The patent applies local quality by creating different insulating layer thicknesses in different display areas. The first display area has a greater insulating layer thickness to reduce horizontal electric field components and improve light transmittance, while the second display area maintains a smaller thickness to preserve horizontal electric field components for wide viewing angles. This localized differentiation resolves the contradiction between light transmittance and viewing angle performance.
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
This configuration results in increased light transmittance and overall brightness in the display device, while also reducing the required voltage for maximum brightness and balancing storage capacitance for proper charging rates.
Implementation Method 1
a common electrode electrically insulated from the pixel electrode and used for forming a driving electric field with the pixel electrode
Implementation Method 2
a horizontal electric field component of the driving electric field in the first display area is lower than a horizontal electric field component of the driving electric field in the second display area
Implementation Method 3
a liquid crystal layer disposed between the first substrate and the second substrate, wherein the liquid crystal layer comprises a plurality of liquid crystal molecules
Implementation Method 4
forming a driving electric field with the pixel electrode for driving a deflection of the plurality of the liquid crystal molecules
Implementation Method 5
a thickness of at least part of the insulating layer located in the first display area is greater than a thickness of at least part of the insulating layer located in the second display area
Data Source
AI summary
A display device is provided. A liquid crystal display panel has a first display area and a second display area. When the display device displays, a brightness of the first display area is lower than a brightness of the second display area. The liquid crystal display panel includes a pixel electrode, a common electrode, and an insulating layer disposed between the pixel electrode and the common electrode. A thickness of at least part of the insulating layer in the first display area is greater than a thickness of at least part of the insulating layer in the second display area.