Microphone Module Integration in OLED Display Bezel Reduction
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Solution Overview
Problem
Conventional organic light emitting display devices face challenges in reducing the bezel area while integrating microphone components, which limits design aesthetics and complicates the implementation of waterproof and dustproof functions due to the need for external holes for sound transmission.
Innovation Solution
The integration of a microphone module with a diaphragm, core, and coil beneath a support substrate with a hole in the display area, allowing sound transmission through the display panel and eliminating external holes for improved waterproofing and dustproofing, while reducing the bezel area by placing components within the display area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If microphone components are disposed in the bezel area, then the device structure is simple and easy to manufacture, but the bezel area cannot be reduced and the design aesthetics are limited
Solution Approach 1:
The patent moves the microphone module from the traditional bezel area (2D plane) to the display area by utilizing the space behind the display panel (3D depth dimension). This dimensional transition allows the microphone to be positioned at a different spatial layer, enabling bezel reduction while maintaining manufacturing simplicity.
Solution Approach 2:
The microphone module is nested within the display panel structure, specifically positioned behind the support substrate in the display area. This nesting approach integrates the microphone into the existing display architecture, allowing compact arrangement and bezel reduction without complicating the manufacturing process.
2Reliability
If a hole is formed in the display panel for sound transmission, then the microphone can function, but the waterproof and dustproof functions are compromised
Solution Approach 1:
The diaphragm acts as an intermediary element between the external environment and the microphone module. It transmits sound waves to the microphone while serving as a barrier that prevents water and dust from entering through the hole, thus mediating between sound transmission requirements and waterproofing needs.
Solution Approach 2:
The diaphragm is implemented as a flexible thin film that allows acoustic wave transmission while providing environmental protection. This thin film structure enables sound to pass through while maintaining the waterproof and dustproof integrity of the display panel.
3Area of stationary object
If the microphone module is disposed in the display area, then the bezel area is reduced, but the image quality may be affected
Solution Approach 1:
The microphone module is positioned in the depth dimension behind the support substrate, rather than occupying space in the 2D display area. This spatial arrangement allows the microphone to be integrated without blocking light or interfering with the display elements, thus maintaining image quality while reducing the bezel 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 solution effectively reduces the bezel area and enhances the device's waterproof and dustproof capabilities by transmitting sound through the display panel, maintaining image quality and design integrity.
Implementation Method 1
a diaphragm which is disposed to overlap at least a part of the hole
Implementation Method 2
a core which is disposed below the diaphragm and is formed of a magnet, and a coil which encloses around the core
Data Source
AI summary
Provided is an organic light emitting display device. The organic light emitting display device includes a display area including a plurality of pixels and a non-display area enclosing the display area, the organic light emitting display device comprises an organic light emitting display panel including a plastic base member, a back plate which is disposed below the organic light emitting display panel and includes a polymer material, a support substrate which is disposed below the back plate and includes a hole formed so as to correspond to a part of the display area, and a microphone module below the support substrate. The microphone module includes a diaphragm which is disposed to overlap at least a part of the hole, a core which is disposed below the diaphragm and is formed of a magnet, and a coil which encloses around the core.