Display Speaker Diaphragm Structure for Thin Profiles and Sound Output
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Solution Overview
Problem
Existing display apparatuses face challenges in reducing thickness while maintaining excellent sound performance due to the need for speaker space, which often increases the overall thickness and compromises sound quality.
Innovation Solution
A speaker design is implemented in the display apparatus where the diaphragm is divided into a central portion and an outer portion, with the central portion fixed and the outer portion vibrating, allowing for additional internal space and reduced thickness without compromising sound performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the speaker thickness is reduced to reduce overall display apparatus thickness, then the overall thickness is reduced, but the internal space for speaker operation is insufficient leading to decreased sound performance
Solution Approach 1:
The diaphragm is divided into a central portion and an outer portion, with the central portion fixed and the outer portion free to vibrate. This segmentation allows the speaker to maintain a compact thickness while preserving sufficient operational space for sound generation, resolving the contradiction between reduced thickness and maintained sound performance.
Solution Approach 2:
Different portions of the diaphragm are given different properties: the central portion is fixed in position while the outer portion is configured to vibrate. This local differentiation enables the speaker to achieve both compact dimensions and adequate vibration space for sound output.
2Length of stationary object
If the diaphragm is divided into central and outer portions with the central portion fixed, then additional internal space is secured and thickness is reduced, but the structural complexity increases
Solution Approach 1:
The diaphragm is segmented into a central portion and an outer portion, creating a simpler overall structure that achieves thickness reduction without requiring complex additional components. The segmentation itself is the solution, avoiding the need for separate vibration isolation mechanisms.
Solution Approach 2:
The central portion of the diaphragm is extracted from the vibration function and fixed in position, separating the vibration function to only the outer portion. This extraction simplifies the overall structure by eliminating the need for complex vibration isolation systems while achieving the desired thickness reduction.
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
This design secures additional internal space within the speaker, reducing the overall thickness of the display apparatus while maintaining excellent sound quality by fixing the central portion of the diaphragm and allowing only the outer portion to vibrate.
Implementation Method 1
a diaphragm exposed to outside the display apparatus through the opening of the rear cover, the diaphragm configured to vibrate
Implementation Method 2
a speaker for outputting sound information
Data Source
AI summary
A display apparatus according to an embodiment of the present disclosure includes a display panel having a front surface and a rear surface, a rear cover having a front side, a rear side, and an opening extending between the front side and the rear side, wherein the front side faces the rear surface of the display panel so that the rear cover covers the rear surface of the display panel, and a speaker between the rear surface of the display panel and the front side of the rear cover, the speaker including a diaphragm exposed to outside of the display apparatus through the opening of the rear cover, the diaphragm configured to vibrate and having a through-hole formed in the center of the diaphragm, and a fixing plate in the through-hole of the diaphragm and fixed in position so as not to vibrate together with the diaphragm.