Double Shielding Layer for Display Device Static Protection
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Solution Overview
Problem
Display devices face reliability issues due to exposure to static electricity, which can damage driving elements, affecting the overall performance and longevity of the devices.
Innovation Solution
A double shielding layer structure is implemented, comprising a first shielding layer on the driving element and a second shielding layer overlapping the first layer, with specific thickness and coverage configurations to protect the driving element from static electricity, enhancing the reliability of the display device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single shielding layer is used on the driving element, then the structure is simple and easy to manufacture, but the protection against static electricity is insufficient
Solution Approach 1:
The shielding structure is divided into two separate shielding layers (first shielding layer and second shielding layer) instead of using a single layer. The first shielding layer is disposed on the driving element while the second shielding layer is disposed on the connecting circuit board, creating a segmented protection system that provides enhanced static electricity protection through multiple layers of defense.
Solution Approach 2:
The first shielding layer and second shielding layer are positioned in an overlapping configuration where they nest together to form a comprehensive shielding structure. The first shielding layer is disposed on the driving element and the second shielding layer overlaps with it, creating a nested arrangement that maximizes protection while maintaining structural integration.
2Reliability
If the shielding layer covers only the driving element, then the material usage is minimized, but the protection coverage is insufficient
Solution Approach 1:
The shielding protection is extended from a single-plane coverage to a multi-dimensional overlapping structure. The first shielding layer covers the driving element while the second shielding layer is disposed on the connecting circuit board in an overlapping manner, creating protection that extends across multiple spatial dimensions and provides comprehensive coverage without excessive material usage.
Data Source
AI summary
The display device includes a display panel, a connecting circuit board physically connected to the display panel; a driving circuit board physically connected to the connecting circuit board; a driving element disposed on the connecting circuit board and comprising a first surface, and a second surface facing the connecting circuit board and which is opposite to the first surface; a first shielding layer disposed on a first surface of the driving element which is exposed outside the display device; and a second shielding layer overlapping an entirety of the first shielding layer and disposed on the connecting circuit board.