Liquid Crystal Display Light Transmittance via Slit Electrodes
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Solution Overview
Problem
Liquid crystal display devices face high energy consumption due to low light transmittance, requiring improved liquid crystal materials with higher light transmittance and luminance to reduce power consumption and extend device service life.
Innovation Solution
A liquid crystal display device with an array substrate featuring elongated slit electrodes and electrode gaps, and an opposite substrate with a bulk electrode, utilizing a liquid crystal composition comprising specific compounds that enhance light transmittance and luminance, achieved through optimized molecular structure and intermolecular interactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional liquid crystal materials are used, then the display device can operate normally, but the light transmittance is low resulting in high energy consumption
Solution Approach 1:
The patent changes the optical parameters of the liquid crystal material by introducing compounds with specific molecular structures (cyclic carbonate groups, fluorinated chains) that modify the refractive index and light absorption characteristics, thereby improving light transmittance and reducing the backlight intensity required for a given luminance level
Solution Approach 2:
The patent uses a composite liquid crystal composition containing multiple compounds with different functions: core liquid crystal compounds for phase stability, cyclic carbonate compounds for improving light transmittance, and fluorinated compounds for adjusting viscosity and response time. This composite approach achieves high transmittance while maintaining proper display performance
2Illumination intensity
If the backlight intensity is increased to improve luminance, then the display brightness is improved, but the energy consumption increases
Solution Approach 1:
The patent modifies the optical parameters of the liquid crystal phase by incorporating cyclic carbonate groups and fluorinated chains, which improve the material's light transmission properties and reduce light absorption, allowing higher luminance with lower backlight intensity
Solution Approach 2:
The patent converts the typically harmful light absorption and scattering effects into beneficial properties by carefully selecting molecular structures that minimize unwanted light interactions while maximizing desired light transmission, thereby improving luminance efficiency
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 results in higher light transmittance and luminance, allowing for reduced backlight intensity and lower power consumption, thereby achieving energy and power savings in liquid crystal display devices.
Implementation Method 1
a liquid crystal composition between the array substrate and the opposite substrate
Implementation Method 2
they not only need to have the stabilities as mentioned above, but also should have properties, such as a broader nematic phase temperature range, a suitable birefringence anisotropy
Data Source
AI summary
Disclosed is a liquid crystal display device comprising an array substrate and an opposite substrate arranged facing the array substrate, wherein the structure of said array substrate comprises elongated and evenly spaced slit electrodes and electrode gaps between the slit electrodes, and said opposite substrate comprises a bulk electrode; and further comprises a liquid crystal composition between said array substrate and the opposite substrate. The liquid crystal display device has a higher light transmittance, such that more backlight passes through the liquid crystal display device, resulting in the liquid crystal display device having a higher luminance.