Insulating Layer Shields Peripheral Circuit from Electrostatic Breakdown
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Solution Overview
Problem
Static electricity-induced corrosion in the peripheral circuit of array substrates in LCD devices leads to defective products and increased scrap rates due to electrostatic breakdown between the common electrode and signal lines on the color filter substrate and array substrate.
Innovation Solution
A protective layer made of insulation materials, such as non-conductive materials with a permittivity greater than 1, is provided between the common electrode and the peripheral circuit on the color filter substrate and array substrate to prevent electrostatic breakdown, effectively shielding the signal lines from static electricity-induced corrosion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protective layer is added between the common electrode and peripheral circuit to prevent static electricity-induced corrosion, then reliability of the peripheral circuit is improved, but device complexity increases
Solution Approach 1:
An insulating layer is introduced as an intermediary between the common electrode and the peripheral circuit. This insulating layer acts as a mediator that prevents direct electrostatic interaction while maintaining the functional relationship between the electrode and circuit, thereby resolving the contradiction by adding a protective element without fundamentally changing the device architecture.
Solution Approach 2:
The insulating layer is applied specifically in the region where the peripheral circuit is located, rather than uniformly across the entire substrate. This localized application provides protection exactly where needed (at the peripheral circuit) while minimizing the overall impact on device complexity and material usage.
2Manufacturing precision
If the protective layer is made of insulation materials with permittivity greater than 1 to shield signal lines, then manufacturing precision is improved, but loss of energy increases
Solution Approach 1:
The patent specifies that the insulating layer should have a permittivity greater than 1, which is a parameter change that enhances its shielding capability. By carefully selecting materials with appropriate permittivity values, the layer provides effective electrostatic protection while managing energy characteristics, thus resolving the contradiction between protection precision and energy loss.
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 protective layer significantly reduces the occurrence of static electricity-induced corrosion, enhancing image quality and reducing costs associated with defective products by preventing electrostatic breakdown and maintaining the structural integrity of the LCD device.
Implementation Method 1
A protective layer made of insulation materials, such as non-conductive materials with a permittivity greater than 1, is provided between the common electrode and the peripheral circuit on the color filter substrate and array substrate to prevent electrostatic breakdown
Implementation Method 2
the protective layer is formed of insulation materials
Data Source
AI summary
The invention provides a color filter substrate, an array substrate, a display panel and a display device. By providing a protective layer used for protecting a peripheral circuit on the array substrate from static electricity-induced corrosion, occurrence of static electricity-induced corrosion in the peripheral circuit on the array substrate can be prevented to improve image quality of LCD device and reduce cost loss caused by a great many of defective products.