Transflective LCD Panel with Protrusions for Voltage Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing transflective blue-phase liquid crystal display panels require high driving voltage and face difficulties in balancing phase retardation between transmissive and reflective regions, leading to uneven electric field distribution and image quality issues.
Innovation Solution
A transflective liquid crystal display panel design featuring a color-filter substrate, an array substrate with blue-phase liquid crystal, transparent protrusions, and reflective portions on the array substrate, which create a vertical electric field and balance phase retardation by redirecting light in both regions, reducing the driving voltage and enhancing image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If lateral electric field mode is used in transflective blue-phase liquid crystal display panel, then image display function is achieved, but high driving voltage of about 20-30V is required
Solution Approach 1:
The patent inverts the conventional lateral electric field generation approach by placing transparent protrusions and reflective portions on the array substrate to generate vertical electric field components, thereby reducing the required driving voltage from 20-30V to lower levels while maintaining display functionality
Solution Approach 2:
The patent changes the electric field direction parameter from lateral to vertical by introducing transparent protrusions and reflective portions, which fundamentally alters the field distribution pattern and reduces the voltage threshold needed for blue-phase liquid crystal switching
2Manufacturing precision
If lateral electric field electrodes are provided on array substrate, then electric field is generated for image display, but uneven electric field distribution occurs with stronger intensity near array substrate and weaker intensity near color-filter substrate
Solution Approach 1:
The patent applies local quality by creating different structures (transparent protrusions with reflective portions) at specific locations on the array substrate to locally enhance and redistribute the electric field intensity, achieving more uniform overall distribution across the liquid crystal layer
Solution Approach 2:
The patent introduces vertical dimension elements (transparent protrusions extending upward) to the conventional planar electrode structure, creating three-dimensional electric field distribution that improves uniformity between the array substrate and color-filter substrate interfaces
3Manufacturing precision
If step is provided between light transmissive region and light reflective region to balance phase retardation, then phase retardation balancing is attempted, but implementation is difficult
Solution Approach 1:
The patent replaces the mechanical/structural step structure with an optical solution using transparent protrusions and reflective portions that achieve phase retardation balancing through light redirection and path modification, significantly simplifying the manufacturing process
Solution Approach 2:
The patent introduces transparent protrusions as intermediary structures that mediate between the transmissive and reflective regions, enabling phase retardation balancing through optical path management rather than direct structural modification
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 reduces the driving voltage and power consumption while achieving balanced phase retardation and improved image quality by using transparent protrusions and reflective portions to manage light direction and polarization in both transmissive and reflective regions.
Implementation Method 1
reflective portions, formed on the transparent protrusions respectively... in the transmissive region, light from a backlight is reflected by the second reflective surface of the reflective portion of one transparent protrusion to change a direction of the light
Implementation Method 2
Blue-phase liquid crystal can change its isotropic refractive index into an anisotropic refractive index, based on the magnitude of the voltage applied thereto
Implementation Method 3
blue-phase liquid crystal... in virtue of rapid response speed of the components... blue-phase liquid crystal realizes a faster response speed
Implementation Method 4
a common electrode, formed on the color-filter substrate... a vertical electric field is generated between the color-filter substrate and the array substrate
Data Source
AI summary
A transflective liquid crystal display panel is disclosed and comprises a color-filter substrate, an array substrate, and blue-phase liquid crystal filled between the color-filter substrate and the array substrate, and the transflective liquid crystal display panel further comprises: a common electrode, formed on the color-filter substrate; transparent protrusions, formed in a transmissive region and a reflective region of each pixel unit of the array substrate; reflective portions, formed on the transparent protrusions respectively.