Cover Window Lattice Pattern for Display Panel Vibration Control
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Solution Overview
Problem
Existing display devices experience unwanted sound output from the side of the display panel due to vibrations from sound generators, which can distract users and reduce audio clarity.
Innovation Solution
A display device design that incorporates a cover window with a lattice pattern area surrounding the sound generator, where the lattice patterns are defined by holes filled with resin, minimizing vibration transmission to areas outside the defined vibration area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If a sound generator vibrates the display panel to output sound, then sound output function is achieved, but sound leaks to the side of the display panel causing distraction and reduced audio clarity
Solution Approach 1:
The cover window is segmented into multiple functional areas: a first lattice pattern area surrounding the sound generator to control vibration, a second lattice pattern area for additional vibration control, and a non-lattice area for normal light transmission. This segmentation allows different regions to perform different functions, containing sound vibrations while maintaining display quality
Solution Approach 2:
Lattice patterns are applied locally around the sound generator rather than across the entire cover window. The lattice patterns in the first and second lattice pattern areas have specific properties (hole size, spacing, depth) that differ from the non-lattice area, creating localized vibration control zones that contain sound leakage without affecting overall display performance
2Reliability
If lattice patterns are added to the cover window to reduce side sound output, then audio clarity is improved, but device complexity increases
Solution Approach 1:
The cover window is designed as a thin film structure with integrated lattice patterns formed by removing material or creating recesses. This thin-film approach allows complex vibration control functionality to be incorporated without significantly increasing thickness or structural complexity, maintaining ease of integration into the display device
Solution Approach 2:
The cover window combines different material properties in different areas: lattice pattern areas with specific acoustic damping characteristics and non-lattice areas with optimal light transmission properties. This composite structure achieves multiple functions (sound control and light transmission) within a single integrated component
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 lattice pattern design effectively reduces sound output from the side of the display panel, enhancing audio clarity and user experience by minimizing unwanted vibrations.
Implementation Method 1
a first sound generator which is disposed on a second surface opposite the first surface of the display panel and outputs sound by vibrating the display panel
Implementation Method 2
the lattice patterns are defined by holes filled with resin, minimizing vibration transmission to areas outside the defined vibration area
Data Source
AI summary
A display device includes a display panel which displays an image, a cover window which is disposed on a first surface of the display panel, and a first sound generator which is disposed on a second surface opposite the first surface of the display panel and outputs sound by vibrating the display panel. The cover window includes a first lattice pattern area including lattice patterns surrounding the first sound generator in a plan view.