Bidirectional Display Speaker With Shared Piezoelectric Enclosure
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Solution Overview
Problem
Conventional bidirectional display devices output sounds in only one direction, making it difficult to provide corresponding sound matching for images displayed in different directions.
Innovation Solution
A bidirectional display device with a speaker unit comprising two piezoelectric modules sharing an enclosure, allowing sound output in the same direction as the respective images displayed on two facing display panels, enabling mono and stereo modes with varied tones.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single speaker is used for bidirectional display, then device complexity is reduced, but sound matching capability for different image directions deteriorates
Solution Approach 1:
The speaker system is segmented into two independent piezoelectric modules (first and second piezoelectric modules), each capable of operating independently to provide sound in different directions. This segmentation allows each module to be optimized for specific directional sound output while maintaining overall system functionality.
Solution Approach 2:
Two piezoelectric modules sharing a common enclosure are merged into a single integrated speaker unit. This merging achieves bidirectional sound output capability while avoiding the complexity of completely separate speaker systems, as both modules share the same enclosure structure.
2Adaptability or versatility
If two separate speaker units are used for bidirectional sound output, then sound matching capability is improved, but device complexity increases
Solution Approach 1:
Two piezoelectric modules are merged into a single speaker unit by sharing a common enclosure. This integration reduces device complexity compared to using two completely separate speaker units, while still achieving bidirectional sound output capability through the coordinated operation of both modules.
Solution Approach 2:
The shared enclosure serves multiple functions: it acts as the housing for both piezoelectric modules and simultaneously functions as a woofer for bass output. This multi-functionality reduces the need for additional components and simplifies the overall device structure.
3Adaptability or versatility
If piezoelectric modules without shared enclosure are used, then sound output flexibility is improved, but device complexity and space utilization worsen
Solution Approach 1:
The shared enclosure is designed to serve dual purposes: it houses both piezoelectric modules for directional sound output and simultaneously acts as a woofer for bass reproduction. This multi-functionality enables varied sound output modes (mono, stereo, bass-enhanced) without requiring additional enclosure structures.
Solution Approach 2:
The enclosure structure is merged with the speaker unit, eliminating the need for separate housings for each piezoelectric module. This integration reduces space requirements and simplifies the overall device structure while maintaining the ability to output sound in multiple modes.
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
Enables synchronized sound output for bidirectionally displayed images, providing users with corresponding sound for each image direction and utilizing the enclosure as a woofer for varied tones.
Implementation Method 1
the piezoelectric element may vibrate according to voltage applied to the upper electrode and the lower electrode and produce a plurality of sounds
Implementation Method 2
Upon applying voltage to the electrodes, liquid crystal molecules of the liquid crystal layer are rearranged, thereby adjusting an amount of transmitted light
Implementation Method 3
a backlight unit interposed between the first display panel and the second display panel
Data Source
AI summary
A display device includes: a first display panel and a second display panel disposed to face each other; a backlight unit interposed between the first display panel and the second display panel; and a speaker unit including a first piezoelectric module and a second piezoelectric module sharing an enclosure and disposed to face each other, a first output unit configured to output sound produced from the first piezoelectric module, and a second output unit configured to output sound produced from the second piezoelectric module.