Multi-Signal HVA Liquid Crystal Display Panel
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Solution Overview
Problem
Current liquid crystal display panels with high vertical alignment (HVA) mode are limited to transmitting only high voltage and ground signals, which fail to meet practical demands for alignment, leading to inaccurate and ineffective control of liquid crystal molecule rotation.
Innovation Solution
A liquid crystal display panel with a multi-signal HVA mode is achieved by using conductive structures made of voltage-decreasing materials to electrically couple common electrode layers with signal transmission portions, allowing for different voltage signals to be transmitted across the panel, enabling precise control of liquid crystal alignment without requiring new manufacturing processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional LOC technology is used with only high voltage and ground signals, then the manufacturing process is simple, but the alignment control precision is insufficient
Solution Approach 1:
The common electrode layer is segmented into multiple voltage signal areas (first voltage signal area, second voltage signal area, third voltage signal area) that can transmit different voltage signals (high voltage H, intermediate voltage M, ground L) simultaneously. This segmentation enables precise control of liquid crystal molecules in different regions, resolving the contradiction between alignment precision and signal complexity.
Solution Approach 2:
Different regions of the common electrode layer are assigned different voltage signal characteristics. The first voltage signal area transmits high voltage H, the second transmits intermediate voltage M, and the third transmits ground L. This local differentiation of signal quality allows precise alignment control in each region while maintaining a unified manufacturing process.
2Reliability
If multiple voltage signals are transmitted to meet alignment demands, then the alignment effectiveness is improved, but the manufacturing process becomes more complex
Solution Approach 1:
The seal layer is designed to serve multiple functions simultaneously: it provides electrical insulation between substrates, transmits specific voltage signals through conductive structures, and enables multi-signal HVA mode operation. By making the seal layer multi-functional, the patent achieves complex signal transmission without adding separate manufacturing processes, thus improving alignment effectiveness while maintaining ease of manufacture.
Solution Approach 2:
The conductive structures within the seal layer automatically perform signal transmission and voltage regulation functions without requiring external intervention or additional processing steps. The seal layer itself provides the necessary electrical pathways, allowing the system to self-configure for multi-signal operation using existing manufacturing capabilities.
3Productivity
If the common electrode is coated on the whole surface, then the manufacturing efficiency is high, but the signal transmission versatility is limited
Solution Approach 1:
The common electrode layer is pre-coated on the entire surface of the first substrate during the manufacturing process, maintaining high manufacturing efficiency. Subsequently, the LOC technology is used to define specific voltage signal areas within this continuous layer, and the seal layer is configured to transmit different voltage signals to these predefined areas. This preliminary coating approach preserves productivity while enabling signal transmission versatility through later configuration.
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 solution allows for accurate and effective multi-signal transmission, improving the alignment effect in the HVA manufacturing process while maintaining existing manufacturing devices and avoiding additional processing steps, thus overcoming the limitations of conventional LOC technology.
Implementation Method 1
the first conductive structure made of a conductive material of voltage decreasing, configured to electrically couple the first signal transmission portion to the first voltage signal area, and configured to change a voltage signal which is transmitted from the first voltage signal area to the first signal transmission portion
Implementation Method 2
The LOC (Laser Patterning on CF) technology refers to that the common electrode 111 coated on the whole surface of the color filter substrate 11 is insulated in the area-dividing manner by laser
Implementation Method 3
rotations of liquid crystal molecules in a liquid crystal layer are controlled by a vertical electric field formed by pixel electrodes on an array substrate and a common electrode on a color filter substrate
Data Source
AI summary
The present disclosure provides a liquid crystal display panel having a multi-signal high vertical alignment (HVA) mode. By changing conductive materials of conductive structures, voltage signals via signal transmission portions can be changed in a transmission process. Different signal transmission portions may have different conductive materials, so that the voltage signals can be changed with different degrees to implement the multi-signal transmission in the HVA manufacturing process. Furthermore, the HVA manufacturing process can be controlled accurately and effectively, and thus the effect of the alignment is better.