Backlight Module Conductive Tip ESD Protection
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Solution Overview
Problem
The existing backlight modules face issues with electro-static discharge (ESD) due to exposed cut test lines on array substrates, which can lead to static electricity entering the internal circuit and causing damage, especially as the space for test lines becomes constrained in thinner display panels.
Innovation Solution
A conductive tip structure is disposed inside the module frame, exposed to attract and discharge static electricity, utilizing a point discharge principle to prevent ESD by attracting charges released by an electro-static gun, and optionally connected to a lead or capacitor for enhanced antistatic performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the test line is cut during the cutting process to create array substrates, then the array substrate can be produced, but the cut test line creates an exposed fracture that allows static electricity to enter the internal circuit
Solution Approach 1:
The patent introduces a conductive tip structure as an intermediary element between the external environment and the internal circuit. This tip structure serves as a mediator that intercepts static electricity before it can reach the vulnerable internal circuit through the cut test line, thus protecting the circuit while allowing the cutting process to proceed
Solution Approach 2:
The conductive tip structure is positioned in advance to counteract the harmful effect of static electricity before it can damage the internal circuit. By having the protective element in place before ESD occurs, the system preemptively neutralizes the threat rather than reacting after damage happens
2Length of moving object
If the display panel is made thinner to reduce size, then the portability and aesthetics are improved, but the space for test lines becomes constrained making ESD protection more difficult
Solution Approach 1:
The patent extracts the ESD protection function from the traditional test line structure and implements it through a separate conductive tip structure. This separation allows the test line to be minimized or removed while maintaining protection functionality, enabling thinner display panel design without sacrificing ESD protection
Solution Approach 2:
The conductive tip structure extends outward from the display panel surface into the surrounding space, utilizing the third dimension (vertical space) rather than consuming lateral space on the panel. This dimensional approach allows ESD protection without increasing the panel's footprint or compromising thinness
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 conductive tip structure effectively prevents static electricity from entering the internal circuit, providing a novel antistatic solution that protects the array substrate and liquid crystal cell from electro-static discharge, ensuring reliable display performance.
Implementation Method 1
According to the principle of point discharge, the backlight module disposes a conductive tip structure inside a module frame, and disposes the conductive tip of the conductive tip structure in an exposed state which is exposed out from the module frame; such that the conductive tip structure can preferentially perform discharging on static electricity
Data Source
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AI summary
Disclosed are a backlight module, a display panel, and a display device. The backlight module (100) includes a module frame (110) and at least one first conductive tip structure (120) disposed inside the module frame (110); the first conductive tip structure (120) includes a first conductive tip (125), the first conductive tip (125) being in an exposed state of being exposed out from the module frame (110). The backlight module, according to a point discharge principle, preferentially performs discharging on static electricity through the conductive tip structure (120), to provide a novel antistatic backlight module.