Array Substrate Pad Shorting Structure for Rapid Static Discharge
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Solution Overview
Problem
Static electricity generated during the manufacturing of array substrates leads to reduced yield and potential electrostatic damage due to high impedance in existing semiconductor-based short-circuiting components, which fail to quickly disperse electrical charges.
Innovation Solution
Incorporating a patterned first metal structure as the short-circuiting component with a patterned semiconductor structure, connected via via holes and an insulating layer, to reduce impedance and facilitate rapid charge dispersion across the array substrate, and using a stable voltage source to eliminate charges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a semiconductor structure is used as the short-circuiting component, then the device can be manufactured with existing semiconductor processes, but the impedance is large resulting in slow charge dispersion
Solution Approach 1:
The patent changes the material parameter of the short-circuiting component from semiconductor to metal, which fundamentally alters the electrical conductivity parameter. This material substitution reduces impedance from high (semiconductor) to low (metal), enabling rapid charge dispersion while maintaining manufacturability through existing metal patterning processes in display panel fabrication.
Solution Approach 2:
The short-circuiting component is constructed as a composite structure combining a metal pattern layer and a semiconductor layer. The metal layer provides low-impedance pathways for rapid charge dissipation, while the semiconductor layer maintains compatibility with existing manufacturing processes and provides structural integration with the display panel architecture.
2Productivity
If static electricity is not dispersed quickly, then manufacturing yield reduces due to electrostatic damage, but using existing short-circuiting components results in slow charge conduction
Solution Approach 1:
By changing the material composition to include metal with high electrical conductivity, the impedance parameter is reduced significantly. This enables the short-circuiting component to rapidly conduct and disperse static charges, preventing electrostatic damage to sensitive display panel components and improving manufacturing yield.
Solution Approach 2:
The short-circuiting component is pre-configured in the array substrate before final assembly, establishing low-impedance discharge pathways in advance. This preliminary protective structure ensures that when static electricity generates during manufacturing, charges can be immediately conducted away through the metal-enhanced pathways, preventing damage before it occurs.
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 effectively reduces impedance, allowing for quicker dispersion of static electricity, thereby preventing electrostatic damage and product defects, and improving antistatic performance while maintaining manufacturing efficiency and cost-effectiveness.
Implementation Method 1
the short-circuiting component includes a patterned first metal structure... electrical charges accumulated on the array substrate cannot be quickly conducted and dispersed
Data Source
AI summary
The application discloses an array substrate and a mother-board for array substrates. The array substrate includes a display area and a non-display area on a periphery of the display area. The non-display area is provided with an interface area. The array substrate includes: multiple signal lines extending in the display area and leading to the non-display area; multiple pads located in the interface Area, and each of the multiple pads is connected to a corresponding one of the multiple signal lines; and a short-circuiting component located in the non-display area, wherein the short-circuiting component is connected with the multiple pads, the multiple signal lines connected with the pads are short-circuited, and the short-circuiting component includes a patterned first metal structure. The array substrate according to embodiments of the present application can avoid problems caused by static electricity, such as, electrostatic damage or product defects.