LCD Panel Insulating Layer Corrosion Protection
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Solution Overview
Problem
Flat panel display devices, particularly LCD panels, face corrosion issues in the peripheral regions after the removal of the fringe circuit, leading to signal transmission failures due to exposed conductive layers.
Innovation Solution
Incorporating an insulating layer between conductive layers in the peripheral regions of the LCD panel to protect the sidewalls of the conductive layers from corrosion, ensuring electrical connectivity and preventing corrosion extension.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the fringe circuit region is removed by cutting through the insulating layer, then the display panel can be manufactured with proper signal reception and ESD protection during testing, but the exposed sidewall of the conductive layer becomes susceptible to corrosion
Solution Approach 1:
The patent applies preliminary action by forming the insulating layer covering the sidewall of the conductive layer before the cutting process. This pre-established protective barrier prevents corrosion from affecting the conductive layer after the fringe circuit region is removed, thus maintaining reliability while enabling ease of manufacture.
2Ease of operation
If the conductive layer sidewall is exposed after cutting, then access to the conductive layer is achieved for electrical connection, but the exposed sidewall is corroded leading to signal transmission failure
Solution Approach 1:
The insulating layer serves as an intermediary element that selectively protects the conductive layer sidewall. It allows the cutting process to expose the conductive layer for electrical connection while simultaneously acting as a barrier against corrosion, thus resolving the contradiction between ease of operation and resistance to harmful factors.
3Reliability
If the insulating layer covers the conductive layer sidewall, then corrosion protection is provided, but the structure complexity increases
Solution Approach 1:
The insulating layer performs multiple functions: it provides electrical isolation between conductive layers, protects the conductive layer sidewall from corrosion, and serves as a structural support element. By combining multiple functions into a single layer, the patent minimizes the increase in device complexity while achieving reliable corrosion protection.
Data Source
AI summary
The invention discloses a display panel. A substrate comprising a chip bonding region and a cut cross-section is provided. A first conductive layer is disposed on the chip bonding region. An insulating layer is disposed on the substrate between the first conductive layer and the cut cross-section, covering a sidewall of the first conductive layer. A second conductive layer is disposed on the insulating layer extending until the cut cross-section and electrically connected to the first conductive layer.