Rotatable Capacitive Touch Sensor Frame Design for Printing Devices
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Solution Overview
Problem
Printing devices with large, rotatable capacitive touch panels face usability issues due to increased weight and static electricity generation, leading to potential malfunctions and space constraints, which existing combinations of techniques fail to adequately address.
Innovation Solution
A printing device design featuring a capacitive touch sensor with a laminated position detection sensor and cover glass, a panel circuit board, and a panel housing, where the touch sensor is rotatably attached with specific angle configurations and frame area sizes to mitigate static electricity interference and enhance usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a large-screen capacitive touch panel is rotatably incorporated into the printing device, then the user interface becomes more versatile and usable from different angles, but the weight increases and requires a stronger support structure, making the device larger
Solution Approach 1:
The touch panel is rotatably attached to the printing unit, allowing it to dynamically change orientation between horizontal and vertical positions. This dynamic capability enables the panel to adapt to different user needs while maintaining a compact overall device structure, avoiding the need for excessive support strength that would increase weight.
2Adaptability or versatility
If a large-screen capacitive touch panel is incorporated into the printing device, then the user interface becomes more versatile, but the space required for installing the printing device increases
Solution Approach 1:
The rotatable attachment allows the touch panel to be positioned in different orientations (horizontal or vertical), enabling versatile user interaction without requiring additional installation space. The panel can be rotated to fit different mounting configurations within the same footprint.
3Adaptability or versatility
If a capacitive touch panel is used in the printing device that generates static electricity, then the user interface becomes more advanced, but the capacitive touch panel may malfunction due to static electricity interference
Solution Approach 1:
A frame area is introduced as an intermediary zone between the operation area and the external environment. This frame area acts as a buffer that can dissipate or shield against static electricity interference, protecting the capacitive touch sensor while maintaining the advanced user interface capabilities.
Solution Approach 2:
The frame area is designed with specific dimensions (width and length) that are optimized to provide local protection against static electricity. By concentrating the protective function in this specific region, the overall reliability of the touch panel is improved without compromising the operation area.
4Area of moving object
If the frame area of the capacitive touch sensor is made smaller to maximize operation area, then the operation area increases, but the protection against static electricity interference decreases
Solution Approach 1:
The frame area dimensions (width and length) are optimized to achieve a balance between operation area and protection capability. By carefully selecting these parameters, the design maximizes the operation area while maintaining sufficient frame area to provide protection against static electricity interference.
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 design reduces the likelihood of malfunction due to static electricity and optimizes space usage, ensuring stable operation and improved usability even with large touch panels, effectively addressing the limitations of existing technologies.
Implementation Method 1
a capacitive touch sensor in which a position detection sensor and a cover glass are laminated
Implementation Method 2
a large amount of static electricity is generated due to the transport of a medium and is discharged via a housing of the printing device
Data Source
AI summary
A printing device includes a panel unit including: a display panel; a capacitive touch sensor in which a position detection sensor and a cover glass are laminated and which includes a first side and a second side located facing each other; and a panel circuit board, the capacitive touch sensor in the second attachment state is disposed so that the first side is lower than the second side, and a size of a first frame area located along the first side in a frame area that does not receive an input of operation information of the capacitive touch sensor in a direction from the first side to the second side is larger than a size of a second frame area located along the second side in the frame area in the direction from the first side to the second side.