Display Cover Structure for EMI and ESD Shielding
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Solution Overview
Problem
Display devices are vulnerable to electromagnetic interference (EMI) and electrostatic discharge (ESD), which can cause malfunction or damage to circuit elements such as driving integrated circuit chips and printed circuit boards.
Innovation Solution
A display device is designed with a cover that includes a body portion and wing portions to protect the driving integrated circuit chip, first printed circuit board, and second printed circuit board from EMI and ESD, where the wing portions extend from the front to the rear surface of the display panel to enhance adhesion and prevent lifting, and cuts are incorporated to manage air pockets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cover is used to protect circuit elements from EMI and ESD, then reliability is improved, but device complexity increases
Solution Approach 1:
The cover is divided into a body portion and multiple wing portions, where the body portion covers the main circuit elements and the wing portions extend to provide additional protection and adhesion. This segmentation allows the cover to protect against EMI and ESD effectively while maintaining a manageable structural complexity through modular design.
Solution Approach 2:
The wing portions are integrated with the body portion in a nested configuration, where the wing portions extend from the body and can be attached to the display panel. This nesting approach consolidates multiple protective functions into a single integrated cover structure, improving reliability without proportionally increasing device complexity.
2Stability of the object's composition
If adhesive force is increased to secure the cover, then stability is improved, but ease of repair deteriorates
Solution Approach 1:
The cover is segmented into a body portion and separable wing portions, where the wing portions can be detached independently or as a group. This segmentation provides stable attachment through multiple attachment points while enabling easier repair by allowing partial or complete removal of the wing portions without affecting the body portion's adhesion to the display panel.
3Reliability
If the cover extends from front to rear surface, then protection coverage is improved, but manufacturing precision requirements increase
Solution Approach 1:
The cover is divided into a body portion and multiple wing portions that can be manufactured and attached separately. The body portion provides core protection, while the wing portions extend to enhance coverage. This segmentation allows each component to be manufactured with standard precision tolerances and assembled through straightforward attachment processes, avoiding the need for high-precision manufacturing required for a single-piece cover spanning the entire display panel.
Data Source
AI summary
A display device includes: a display panel; a driving integrated circuit chip configured to drive the display panel; a first printed circuit board connected to the display panel; a second printed circuit board connected to the first printed circuit board; and a cover including a body portion covering the driving integrated circuit chip, the first printed circuit board, and the second printed circuit board, and a wing portion protruding from the body portion, wherein the wing portion extends from a front surface of the display panel to a rear surface of the display panel while surrounding a side surface of the display panel.