Shielding Member for Display Driving Circuit EMI Noise
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Solution Overview
Problem
As portable electronic devices adopt larger touch displays, the proximity of display driving circuits to surrounding components leads to electromagnetic interference (EMI) noise, causing performance deterioration in components like antennas.
Innovation Solution
A shielding member is disposed on a Flexible Printed Circuit Board (FPCB) to cover at least part of the display driving circuit, electrically coupled with a ground contact area, effectively shielding noise and preventing performance degradation of surrounding electronic components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a large-screen display is adopted to enhance visibility and manipulation convenience, then the display area increases, but electromagnetic interference noise from the driving circuit causes performance deterioration of surrounding electronic components
Solution Approach 1:
A shielding member is introduced as an intermediary component between the display driving circuit and surrounding electronic components (such as antennas). This shielding member blocks electromagnetic interference noise generated by the driving circuit, preventing it from affecting nearby components while allowing the large-screen display to maintain its full display area without performance degradation of surrounding elements.
2Device complexity
If the display driving circuit is disposed close to surrounding electronic components to accommodate large-screen design, then device integration improves, but noise from the driving circuit deteriorates the performance of surrounding components
Solution Approach 1:
The shielding member serves as a protective intermediary that enables close integration of the display driving circuit with surrounding electronic components without compromising their performance. By placing the shielding member between these components, the design achieves high device integration while maintaining reliability of surrounding components through noise isolation.
3Ease of operation
If the display is made larger to occupy most of the front face for manipulation convenience, then visibility and ease of operation improve, but the proximity of the driving circuit to surrounding components causes electromagnetic interference
Solution Approach 1:
The shielding member acts as a protective barrier that allows the display to be made larger for improved manipulation convenience and visibility. By blocking electromagnetic interference generated by the driving circuit, the shielding member enables large-screen designs without the harmful effects that would otherwise limit display size due to interference with surrounding components.
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 shielding member effectively reduces noise interference from the display driving circuit, maintaining the performance of surrounding components such as antennas, while allowing for the adoption of large-screen displays without compromising electronic device performance.
Implementation Method 1
a shielding member disposed to cover at least part of a display driving circuit
Data Source
AI summary
According to various embodiments, an electronic device may include a housing, and a display disposed to at least part of the housing. The display may include a display panel including at least one pixel, and a substrate layer disposed below the display panel. The substrate layer may include a bendable connecting area extending to the outside of the display panel. The display may further include a display driving circuit disposed to one face of the connecting area, a Flexible Printed Circuit Board (FPCB) electrically coupled with at least part of the connecting area and including a contact area to which a conductor electrically coupled with a ground portion of the electronic device is exposed, and a shielding member electrically coupled with the contact area. The shielding member may be disposed on the FPCB and one face of the connecting area to cover at least part of the display driving circuit. Various other embodiments may also be possible.