Blue Phase LCD Protrusion Patterns Reduce Driving Voltage
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Solution Overview
Problem
Conventional liquid crystal displays (LCDs) using blue phase liquid crystals require high driving voltages, which is a disadvantage.
Innovation Solution
The design includes protrusion patterns on insulating substrates with pixel electrodes and metal patterns that overlap the protrusion patterns, reducing the driving voltage needed to control the blue phase liquid crystals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If blue phase liquid crystals are used in LCDs, then viewing angle and response speed are improved, but driving voltage becomes too high
Solution Approach 1:
The patent introduces protrusion patterns with specific geometric characteristics (height, width, spacing) that create local variations in the liquid crystal layer. These local structural modifications generate additional electric fields that assist in orienting the blue phase liquid crystal molecules, thereby reducing the overall driving voltage required while maintaining the high response speed and wide viewing angle characteristics of blue phase liquid crystals.
Solution Approach 2:
The patent adds a vertical dimension by introducing protrusion patterns that extend from the substrate surface into the liquid crystal layer. This three-dimensional structure creates new electric field distribution patterns that complement the traditional planar electrode configuration, enabling more efficient control of liquid crystal orientation at lower voltages.
2Adaptability or versatility
If blue phase liquid crystals are used in LCDs, then viewing angle is improved, but driving voltage becomes too high
Solution Approach 1:
The protrusion patterns create localized regions with different electric field strengths and orientations. These local variations enhance the angular dependence of the liquid crystal response, allowing the display to maintain wide viewing angles while the overall structure reduces the voltage required through distributed field enhancement across the liquid crystal layer.
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 allows for the effective reduction of driving voltage, enhancing the performance of LCDs by improving their viewing angle and response speed.
Implementation Method 1
When a voltage is applied to the electrodes, an electric field is generated between the electrodes of the two panels to control the transmittance of light passing through the liquid crystal layer by rearranging liquid crystal molecules
Implementation Method 2
an LCD is composed of two display panels having a plurality of electrodes thereon and a liquid crystal layer interposed therebetween. When a voltage is applied to the electrodes, an electric field is generated between the electrodes of the two panels to control the transmittance of light passing through the liquid crystal layer by rearranging liquid crystal molecules
Data Source
AI summary
A liquid crystal display (“LCD”) and a method of fabricating the same are provided. The LCD includes a first insulating substrate, protrusion patterns spaced apart from each other on the first insulating substrate, pixel electrodes disposed on the protrusion patterns and having a cutout between the protrusion patterns, metal patterns disposed on the protrusion patterns and overlapping top surfaces of the protrusion patterns, a second insulating substrate facing the first insulating substrate, and a liquid crystal layer interposed between the first insulating substrate and the second insulating substrate.