Apertured Array Substrate for LCD Charging Speed
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Solution Overview
Problem
The large overlapping area between the first and second electrodes in AD-SDS type array substrates increases storage capacitance, leading to longer charging and discharging times in liquid crystal display panels.
Innovation Solution
Incorporating apertures in the first electrode layer and corresponding apertures in the second electrode layer, with the insulating layer in between, reduces the overlapping area and forms a multi-dimensional electric field, thereby decreasing storage capacitance and improving the aperture ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the first electrode is designed as a planar structure without apertures, then the overlapping area between the first and second electrodes is large, but this leads to increased storage capacitance and longer charging/discharging time
Solution Approach 1:
The first electrode is segmented by introducing multiple apertures (through-holes) that divide the continuous electrode structure into isolated regions. This segmentation reduces the overlapping area between the first and second electrodes, thereby decreasing storage capacitance and charging/discharging time while maintaining the necessary electric field distribution for display quality
Solution Approach 2:
The first electrode is designed with a porous structure containing multiple apertures distributed throughout its area. This porous configuration allows the electrode to maintain structural integrity and electrical functionality while significantly reducing the effective overlapping area with the second electrode, thus lowering storage capacitance without compromising display performance
2Force
If the overlapping area between first and second electrodes is large, then the electric field distribution is improved, but the storage capacitance increases
Solution Approach 1:
Different regions of the first electrode are designed with different properties: areas with apertures have reduced overlapping and lower capacitance, while areas between apertures maintain sufficient electrode coverage for proper electric field distribution. This local differentiation allows optimization of both electric field quality and capacitance reduction in specific regions
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 reduces the charging and discharging time of the liquid crystal display panel and allows for smaller thin film transistors, enhancing the aperture ratio and overall display performance.
Implementation Method 1
an insulating layer provided between the first electrode layer and the second electrode layer
Implementation Method 2
the first electrode layer is provided with a plurality of first apertures therein... reduces the overlapping area between the second electrode and the first electrode, which leads to a decrease in the storage capacitance
Implementation Method 3
forming a multi-dimensional electric field with a transversal electric field generated from edges of common electrodes or pixel electrodes in the same plane and a longitudinal electric field generated between the pixel electrodes and the common electrodes, enables liquid crystal molecules in all orientations... to produce rotation switching
Data Source
AI summary
The disclosed technology discloses an array substrate and a liquid crystal display panel. The array substrate comprises: a base substrate; a gate line and a data line formed on the base substrate, the gate line and the data line defining a plurality of pixel regions; and a first electrode layer and a second electrode layer formed in each pixel region; and an insulating layer provided between the first electrode layer and the second electrode layer. The first electrode layer, the insulating layer and the second electrode layer are laminated on the base substrate in this order. The first electrode layer is provided with a plurality of first apertures therein, and the first electrode layer comprises a plurality of first electrode portions located between the plurality of first apertures.