Integrating ESD Protection Units Within LCD Panel Structure
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Solution Overview
Problem
Existing liquid crystal display (LCD) devices require multiple electrostatic discharge (ESD) protection units on flexible printed circuit boards, complicating the layout and increasing the fabrication area due to the need for separate protection for each lighting unit.
Innovation Solution
Integrating ESD protection units within the LCD panel, with connections to the lighting module and ground, eliminating the need for additional protection units on the flexible printed circuit board, and using components like varistors, transient voltage suppressors, or filter circuits to protect the lighting module from ESD events.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple ESD protection units are disposed on the flexible printed circuit board for protecting each lighting unit, then the lighting module is protected from ESD events, but the layout complexity and fabrication area of the flexible printed circuit board increase
Solution Approach 1:
The patent merges the ESD protection function with the LCD panel structure by integrating ESD protection units into the LCD panel rather than keeping them separate on the flexible printed circuit board. This combining approach allows the ESD protection units to share the panel's structural support and grounding infrastructure, thereby protecting the lighting module while reducing the complexity and area requirements on the flexible printed circuit board layout
2Reliability
If multiple ESD protection units are disposed on the flexible printed circuit board for protecting each lighting unit, then the lighting module is protected from ESD events, but the fabrication area of the flexible printed circuit board increases
Solution Approach 1:
The patent merges the ESD protection function with the LCD panel structure by integrating ESD protection units into the LCD panel rather than keeping them separate on the flexible printed circuit board. This combining approach allows the ESD protection units to share the panel's structural support and grounding infrastructure, thereby protecting the lighting module while reducing the complexity and area requirements on the flexible printed circuit board layout
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
Simplifies the layout and reduces the fabrication area of the flexible printed circuit board by providing effective ESD protection for the lighting module within the LCD panel, enhancing the manufacturing efficiency and reducing the complexity of the circuit layout.
Implementation Method 1
a first electrostatic discharge protection unit, and a second electrostatic discharge protection unit. The first electrostatic discharge protection unit is coupled to a first end of the lighting module, and the second electrostatic discharge protection unit is coupled to a second end of the lighting module
Data Source
AI summary
A liquid crystal display (LCD) device having electrostatic discharge (ESD) protection functionality is disclosed. The LCD device includes a flexible printed circuit board, an LCD panel, a lighting module, a first ESD protection unit, and a second ESD protection unit. The lighting module is disposed on the flexible printed circuit board. The first ESD protection unit is disposed in the LCD panel and is coupled between the first end of the lighting module and the ground of the flexible printed circuit board. The second ESD protection unit is disposed in the LCD panel and is coupled between the second end of the lighting module and the ground of the flexible printed circuit board.