Floating Electrode Liquid Crystal Display Transmittance
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Solution Overview
Problem
Conventional IPS display electrode designs for blue phase liquid crystal displays suffer from poor transmittance, which fails to meet the growing consumer demand for higher display quality in terms of response time and optical performance.
Innovation Solution
A liquid crystal display design featuring a floating electrode structure, where a plurality of floating electrodes are disposed on a second substrate above spaces between first and second electrodes on a first substrate, enhancing the electric field and improving transmittance without significantly increasing driving voltage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional IPS display electrode design is used to drive blue phase liquid crystal molecules, then the display can function as a light valve, but the transmittance is poor
Solution Approach 1:
The electrode structure is segmented into multiple components: first electrode on the first substrate, second electrode on the second substrate, and floating electrodes disposed between them. This segmentation allows each electrode to contribute independently to the electric field, enhancing overall transmittance while maintaining functional simplicity
Solution Approach 2:
The floating electrodes are positioned in the space between the first and second substrates, adding a dimensional element to the electrode configuration. This three-dimensional arrangement optimizes the electric field distribution and improves transmittance without significantly increasing driving voltage
2Illumination intensity
If higher driving voltage is applied to improve transmittance, then light valve function is enhanced, but energy consumption increases
Solution Approach 1:
The floating electrodes are strategically positioned in specific regions between the first and second electrodes, creating localized electric field enhancements. This allows for improved transmittance in critical areas without requiring a uniform increase in driving voltage across the entire display, thereby reducing overall energy consumption
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 floating electrode design enhances the electric field and significantly improves transmittance and display brightness, achieving up to 90.42% transmittance at a reduced driving voltage compared to conventional designs.
Implementation Method 1
the liquid crystal layer is optically isotropic when the first electrode and the second electrode have no voltage difference; and the liquid crystal layer is optically anisotropic when the first electrode and the second electrode have a voltage difference therebetween
Implementation Method 2
generally a transverse electric field is required such that the blue phase liquid crystal material can function as a light valve
Data Source
AI summary
A liquid crystal display is provided, which includes a first substrate, a plurality of pixels, a second substrate, a plurality of floating electrodes, and a liquid crystal layer. The pixels are arranged in an array on the first substrate, and each of the pixels includes a first electrode and a second electrode, wherein a space is maintained between the first electrode and the second electrode. The floating electrodes are disposed on the second substrate and above the spaces. The liquid crystal layer is located between the first substrate and the second substrate, wherein the liquid crystal layer is optically isotropic when the first electrode and the second electrode have no voltage difference; and the liquid crystal layer is optically anisotropic when the first electrode and the second electrode have a voltage difference therebetween.