Conductive Ink Pattern Dissipates Static Charge on Display Panel Holes
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Solution Overview
Problem
Portable electronic devices face visibility defects due to induced charges generated by friction on the window surface, causing bright spots at the border of holes in the display panel and input sensor.
Innovation Solution
An electronic device design that includes an electro-optical module, a display panel with a panel hole, a window with a covering member and a print pattern, and an ink pattern covering the inner surface of the panel hole. The print pattern has a base part and a blocking pattern with a stepped lower surface, and the ink pattern includes conductive ink to remove electric fields.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a hole is provided in the display panel and input sensor to expose the electro-optical module, then the electro-optical module can be exposed to outside, but a bright spot occurs at the border of the hole due to induced charges from friction on the window surface
Solution Approach 1:
A conductive layer is introduced as an intermediary element between the window surface and the panel hole border. This conductive layer acts as a mediator that intercepts and dissipates induced charges before they can accumulate at the hole border and create visible bright spots, thus resolving the contradiction between module exposure and visual quality
Solution Approach 2:
The patent converts the harmful effect of friction-induced charges into a beneficial outcome by using the conductive layer to deliberately manage and dissipate these charges. The same friction that causes the problem also serves to activate the conductive layer's charge dissipation function, transforming the harmful static charge accumulation into a controlled electrical discharge process
2Reliability
If a conductive ink pattern is applied to cover the inner surface of the panel hole, then electric fields are removed and bright spots are prevented, but the manufacturing process becomes more complex
Solution Approach 1:
The conductive layer is merged with the existing print pattern structure of the display panel. By combining the conductive functionality with the existing pattern formation process, the patent integrates charge dissipation into the standard manufacturing workflow, reducing the incremental complexity of adding this new functional element
Solution Approach 2:
The patent utilizes changes in material properties - specifically the electrical conductivity parameter - to achieve the desired functionality. By selecting materials with appropriate conductivity characteristics and controlling their deposition parameters, the system achieves reliable charge dissipation while maintaining compatibility with existing manufacturing processes
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
Prevents visibility defects by removing electric fields caused by induced charges, thereby preventing bright spots and improving the reliability and aesthetics of the electronic device.
Implementation Method 1
the ink pattern includes conductive ink to remove electric fields
Data Source
AI summary
An electronic device includes an electro-optical module which outputs or receives a signal from, an electronic panel including an inner surface defining a panel hole which corresponds to the electro-optical module and has a center, a window on the electronic panel and including a covering member extended across the panel hole, and a flow-blocking layer between the covering member and the electronic panel and overlapping the inner surface of the electronic panel, the flow-blocking layer defining a base part extended from the covering member and toward the electronic panel and defining a first lower surface, and a flow-blocking pattern between the center and the inner surface, the flow-blocking pattern defining a second lower surface forming a step with the first lower surface, and an electrical charge-discharging pattern overlapping the flow-blocking pattern and extending along the inner surface of the electronic panel.