LCD Panel Storage Line Hole Overlap for Response Speed
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Solution Overview
Problem
Conventional liquid crystal display (LCD) panels with a patterned vertical alignment (PVA) mode face a challenge in maintaining an optimal opening ratio due to the slow response speed of liquid crystal molecules in the middle area between sub-electrodes and holes, which reduces image quality and pixel efficiency.
Innovation Solution
The LCD panel design includes a first and second substrate with a storage line and pixel electrode that divides each unit pixel into multiple domains, with a hole in the common electrode layer overlapping the storage line to enhance electric flux intensity and improve response speed, while maintaining the opening ratio by adjusting the diameter of the hole and the area of the storage line.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the hole diameter is reduced to reduce the middle area width, then the response speed of liquid crystal molecules is improved, but the opening ratio of each pixel is reduced
Solution Approach 1:
The invention merges the storage line with the hole structure by positioning the hole to overlap with the storage line. This combination allows the hole to serve dual purposes: maintaining the electric field for fast response while the storage line compensates for light blocking, thus preserving the opening ratio even with optimized hole dimensions.
Solution Approach 2:
The invention applies local quality by creating different functional zones within the pixel: the hole area provides strong electric field for fast response, while the storage line area compensates for light transmission. This localized functional differentiation allows optimization of response speed in critical areas without sacrificing overall opening ratio.
2Speed
If the hole diameter is increased to improve response speed in middle area, then the response speed of liquid crystal molecules is improved, but the opening ratio is reduced
Solution Approach 1:
The storage line is merged with the hole structure through overlapping positioning. This allows the hole to be enlarged for improved response speed while the storage line's transparent characteristics and electrical function compensate for the light blocking effect, maintaining the opening ratio.
3Speed
If the middle area width is reduced by reducing hole diameter, then the response speed is improved, but the pixel efficiency is reduced due to lower opening ratio
Solution Approach 1:
The invention combines the storage line function with the hole structure, creating a hybrid element that simultaneously improves response speed and maintains pixel efficiency. The storage line's electrical capacitance and transparent properties compensate for the light blocking of the hole.
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 design improves the response speed of liquid crystal molecules and enhances the opening ratio of each pixel, leading to better image quality and efficiency by increasing the intensity of electric flux lines without reducing the pixel's opening ratio.
Implementation Method 1
a hole is formed at the common electrode layer corresponding to a central portion of each domain, so that the sub-electrode and electric flux lines are formed
Implementation Method 2
The LCD panel applies an electric field to the liquid crystal layer to display images by controlling transmissivity of light
Data Source
AI summary
A liquid crystal display (LCD) panel includes first and second substrates, and a liquid crystal layer interposed between the first and second substrates. The first substrate includes gate lines, data lines, a storage line and a pixel electrode. The gate lines extend along a first direction. The data lines extend along a second direction crossing the first direction, and the gate and data lines define a unit pixel. The storage line includes a first line portion extending along the second direction in the unit pixel. The pixel electrode divides the unit pixel into first and second domains. A second substrate faces the first substrate and includes a common electrode having a first hole formed on the common electrode, and the first hole is overlapped with the storage line. The first hole and the storage line are overlapped with each other, so that an opening ratio may be enhanced.