ESD Device for LCD Panel with Concentration Structure
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Solution Overview
Problem
Current methods for preventing static electricity damage to liquid crystal display panels are limited to process control and do not provide effective electrostatic protection beyond the manufacturing environment, necessitating a design-based solution for enhanced protection.
Innovation Solution
An electrostatic discharge device is integrated into liquid crystal display panels, comprising an electrostatic concentration structure on the color film substrate and an electrostatic discharge structure on the array substrate, with a bidirectional protection diode circuit or thin film transistor for effective static electricity collection and discharge, providing strong anti-static protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If process control methods (ion blowing, anti-static bracelets, conductive accessories) are used to prevent static electricity damage, then electrostatic protection during manufacturing is improved, but protection cannot be extended beyond the factory environment and cannot be continued to the client
Solution Approach 1:
The display panel incorporates built-in electrostatic discharge structures (conductive layers, discharge electrodes) that automatically collect and discharge static electricity without requiring external process control measures. This self-service mechanism enables the panel to protect itself both during manufacturing and during client use, extending protection beyond the factory environment.
Solution Approach 2:
The patent integrates electrostatic discharge structures into the panel design during the manufacturing process, preparing the protection mechanism in advance. The conductive layers and discharge electrodes are pre-positioned to collect and discharge static electricity before it can cause damage, enabling continuous protection from design through client use.
2Reliability
If electrostatic discharge structures are integrated into the display panel design, then protection is extended beyond manufacturing to client use, but the device complexity increases
Solution Approach 1:
The conductive layers and electrodes integrated into the display panel serve multiple functions: they are part of the normal display operation and simultaneously function as electrostatic discharge structures. This multi-functionality reduces the need for separate dedicated electrostatic protection components, thereby limiting the increase in device complexity.
Solution Approach 2:
The patent merges the electrostatic discharge structures with existing panel components. The conductive layers are integrated into the pixel electrode structures, and discharge electrodes are combined with existing conductive elements, rather than adding completely separate protection systems. This merging approach minimizes structural complexity while achieving electrostatic protection.
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 electrostatic discharge device effectively reduces static electricity damage to the display panel, offering both internal and external electrostatic protection, thereby enhancing the panel's anti-static capabilities.
Implementation Method 1
an electrostatic concentration structure, protruded on a color film substrate of the liquid crystal display panel
Implementation Method 2
an electrostatic discharge structure, disposed on an array substrate of the liquid crystal display panel and positionally corresponding to the electrostatic concentration structure
Data Source
AI summary
An electrostatic discharge (ESD) device applied to a liquid crystal display (LCD) panel includes: an electrostatic concentration structure, protruded on a color film substrate of the LCD panel; and an electrostatic discharge structure, being disposed on an array substrate of the LCD panel, positionally corresponding to the electrostatic concentration structure and having an interval relative to the electrostatic concentration structure satisfying a preset interval. Or, the ESD device includes an electrostatic discharge structure disposed on an array substrate of the LCD panel and having an interval relative to a color film substrate of the LCD panel satisfying a preset interval. Therefore, the ESD device can effectively reduce damage caused by static electricity to the LCD panel, and carry out electrostatic protection on the side of color film substrate as well as on the surroundings of the display panel, so that a strong anti-static protection ability is achieved.