Touch Sensing Member Audio Output via Piezoelectric Vibration
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Solution Overview
Problem
Conventional display devices primarily serve the function of image display and lack an integrated audio output capability, necessitating the inclusion of a separate speaker for sound provision.
Innovation Solution
A display device incorporating a touch sensing member with both touch functionality and audio output capability, featuring a vibration area that generates vibrations in response to audio signals and a window that converts these vibrations into sound.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a separate speaker is added to provide audio output, then audio functionality is improved, but device complexity and size increase
Solution Approach 1:
The patent combines the speaker function with the existing touch sensing member by integrating a piezoelectric polymer layer into the touch sensing structure. The vibration area of the touch sensing member serves dual purposes: touch detection and audio output through piezoelectric vibration, eliminating the need for a separate speaker component
Solution Approach 2:
The touch sensing member is designed to perform multiple functions: touch sensing in the touch sensing area and audio output in the vibration area. This multi-functional design allows the same component to serve both original and new purposes, reducing overall device complexity
2Adaptability or versatility
If a separate speaker is added to provide audio output, then audio functionality is improved, but device size increases
Solution Approach 1:
The speaker function is merged into the existing touch sensing member structure. The piezoelectric polymer layer is integrated within the touch sensing member, allowing audio output without adding external speaker components that would increase device area
Solution Approach 2:
The touch sensing member serves dual functions: touch detection and audio output. By making the same component multi-functional, the device avoids the space requirements of a dedicated speaker, maintaining compact form factor
3Device complexity
If the touch sensing member is used for both touch sensing and audio output, then device complexity is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The touch sensing member is divided into different functional areas: a touch sensing area for touch detection and a vibration area for audio output. The piezoelectric polymer layer is specifically applied in the vibration area where it is needed for audio function, allowing differentiated properties in different regions
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 integration of touch sensing and audio output functions within the display device enhances its usability by eliminating the need for a separate speaker, while also reducing device size and complexity.
Implementation Method 1
a piezoelectric polymer layer generating vibrations in response to a first audio signal
Implementation Method 2
a window which is located on the touch sensing member and outputs sound in response to the vibrations generated in the vibration area
Data Source
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AI summary
A display device includes a display panel, a touch sensing member which is disposed on the display panel and comprises a touch sensing area and a vibration area disposed around the touch sensing area and generating vibrations in response to a first audio signal, and a window which is disposed on the touch sensing member and outputs sound in response to the vibrations generated in the vibration area.