Piezoelectric Sound Module Over Display Opening Area
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Solution Overview
Problem
Electronic apparatuses with integrated sound modules face spatial limitations, restricting the arrangement and effectiveness of sound output and haptic effects due to the occupied space within the device.
Innovation Solution
Incorporating a sound module with piezoelectric elements overlapping an opening area between pixel units on the display panel, utilizing materials like PEDOT:PSS, graphene, and polyvinylidene fluoride, which are arranged along specific directions to enhance sound output and haptic effects while allowing for flexible placement within the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a sound module is mounted within the electronic apparatus, then sound output function is integrated, but spatial limitations restrict the arrangement and effectiveness of sound output and haptic effects
Solution Approach 1:
The piezoelectric elements are arranged in a planar configuration overlapping the opening area between pixel units, transitioning from traditional three-dimensional speaker mounting to a two-dimensional integrated layout. This allows the sound module to be embedded within the display panel plane, significantly improving spatial utilization and arrangement flexibility while maintaining effective sound and haptic output.
2Reliability
If piezoelectric elements are arranged along specific directions within the display area, then sound output and haptic effects are improved, but manufacturing complexity increases
Solution Approach 1:
The sound module is divided into multiple discrete piezoelectric elements arranged in specific directions (first and second directions crossing each other) within the opening area. Each piezoelectric element can be independently positioned and connected, allowing for modular manufacturing processes that reduce overall complexity while achieving directional sound and haptic control.
Solution Approach 2:
The piezoelectric elements serve dual functions: generating sound waves and producing haptic effects. This multi-functionality reduces the need for separate components, simplifying the overall manufacturing process while maintaining high reliability for both audio output and tactile feedback.
3Volume of stationary object
If piezoelectric elements overlap the opening area between pixel units, then spatial utilization is improved, but manufacturing precision requirements increase
Solution Approach 1:
The piezoelectric elements are specifically positioned to overlap only the opening areas between pixel units, utilizing the existing spatial structure of the display panel. This localized placement approach allows manufacturing processes to focus on specific target zones, reducing overall positioning requirements while maximizing spatial utilization of the display panel area.
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 configuration improves sound output and haptic effects by providing a more flexible arrangement of sound modules, enhancing user experience with improved spatial utilization and realistic auditory and tactile stimulation.
Implementation Method 1
a sound module including piezoelectric elements overlapping the opening area
Data Source
AI summary
An electronic apparatus includes a display panel including pixel units arranged in a display area and an opening area defined between the pixel units, and a sound module including piezoelectric elements overlapping the opening area in the display area, wherein each of the pixel units includes a transistor and a light emitting element electrically connected to each other, wherein the piezoelectric elements are arranged along a first direction and a second direction crossing the first direction within the display area.