Cover Layer Openings to Diffuse Capacitor Noise in OLED Devices
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing multimedia electronic devices with organic light emitting display devices face challenges in reliability due to audible noise generated by capacitors, which can be distracting and affect user experience.
Innovation Solution
The electronic device incorporates a cover layer with metallic material and a design featuring openings that overlap the capacitor, diffusely reflecting and decomposing the audible noise, thereby reducing its transmission to the device's window.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a capacitor is disposed on the circuit board, then the electronic device can store and supply electrical energy, but audible noise is generated by the capacitor which affects reliability and user experience
Solution Approach 1:
The patent applies the principle of converting harm into benefit by using the metallic cover layer to diffract and redirect the audible noise generated by the capacitor. Instead of simply blocking or absorbing the noise, the metallic surface transforms the harmful sound waves into a different direction through diffraction, thereby reducing the noise perception at the window while maintaining the capacitor's electrical energy storage function.
Solution Approach 2:
The patent introduces a metallic cover layer as an intermediary element between the capacitor and the window. This cover layer acts as a mediator that intercepts the audible noise generated by the capacitor and redirects it through diffraction, preventing the noise from reaching the window directly. The cover layer serves as a protective intermediary that maintains both the electrical functionality and acoustic performance of the device.
2Object-generated harmful factors
If the cover layer is made of metallic material, then audible noise can be diffracted and redirected, but the device structure becomes more complex
Solution Approach 1:
The patent applies the principle of multi-functionality by designing the cover layer to serve multiple purposes: it provides structural protection for the internal components, acts as an electromagnetic shield, and functions as an acoustic diffraction surface. By integrating these multiple functions into a single metallic cover layer, the patent reduces overall device complexity while effectively addressing the audible noise issue generated by the capacitor.
3Object-generated harmful factors
If openings are provided in the cover layer to diffract noise, then noise transmission is reduced, but the cover layer strength may be compromised
Solution Approach 1:
The patent applies the principle of local quality by strategically positioning openings only in specific regions of the cover layer where they are most effective for noise diffraction, while maintaining the overall structural integrity of the cover. The openings are located to target the diffraction of capacitor-generated noise without compromising the fundamental strength and protective function of the cover layer.
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 or eliminates the perception of audible noise from the capacitor, enhancing the reliability and user experience of the electronic device by preventing noise transmission through the window.
Implementation Method 1
the cover layer includes a metallic material... Sound is generated by the capacitor, and the sound is diffusely reflected from the opening
Implementation Method 2
the sound is diffusely reflected from the opening
Data Source
AI summary
An electronic device including: a display layer; a cover layer disposed under the display layer; a circuit board connected to the display layer and disposed under the cover layer; and a capacitor disposed on the circuit board, wherein the cover layer includes a first area overlapping the capacitor and a second area adjacent to the first area when viewed on a plane, wherein an opening is provided in the first area.