Force Sensor Placement in Display Bracket for Input Detection
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Solution Overview
Problem
Current display devices lack an efficient and intuitive method for user input, as traditional physical buttons are being replaced by touch panels, but there is a need for a more direct and responsive input mechanism that can easily detect force applications.
Innovation Solution
Incorporating force sensors into the display device, specifically designed to detect forces applied by the user, which can replace traditional buttons and provide additional input options, such as sensing regions for pressing and squeezing actions, integrated with a flexible circuit board and a bracket structure for optimal force transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If force sensors are integrated into the display device to replace traditional buttons, then input efficiency and intuitiveness are improved, but device complexity increases
Solution Approach 1:
The force sensor is integrated directly into the display panel structure, merging the sensing function with the display structure. The sensor is positioned between the display panel and the bracket, eliminating the need for separate button components while maintaining input functionality.
Solution Approach 2:
The force sensor serves multiple functions: it detects pressing actions, determines squeezing directions, and provides tactile feedback. This single component replaces multiple traditional input mechanisms, enabling versatile input methods while reducing overall device complexity.
2Adaptability or versatility
If force sensors are added to detect squeezing directions, then input versatility is improved, but manufacturing complexity increases
Solution Approach 1:
The force sensor is divided into multiple sensing regions, each capable of detecting force in specific directions. This segmentation allows the sensor to detect squeezing actions from different directions independently, providing versatile input capabilities while using standardized sensor components.
Solution Approach 2:
Different regions of the force sensor are optimized for detecting specific types of input actions. The sensor structure varies locally to enhance sensitivity to pressing versus squeezing actions, allowing versatile input detection without requiring completely different sensor designs for each function.
3Measurement precision
If the force sensor is positioned to overlap with the display panel, then force transmission accuracy is improved, but display area is reduced
Solution Approach 1:
The force sensor is positioned in the thickness direction of the display panel rather than occupying lateral display area. The sensor detects force through the vertical dimension by measuring stress in the flex circuit board, allowing accurate force detection without reducing the horizontal display area.
Solution Approach 2:
The flex circuit board serves as an intermediary element that transmits force from the display panel to the force sensor. When the display panel is pressed, the force is transmitted through the flex circuit board to the sensor, enabling accurate force detection while maintaining full display area visibility.
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
Enables easy and intuitive user input by detecting force applications, allowing for more versatile interactions with the device, such as screen adjustments and quick function execution, enhancing user experience and input efficiency.
Implementation Method 1
a first force sensor 100 adjacent to a first edge of the display panel 30
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A display device (1) includes a bracket (50), a display panel (30), a first force sensor (100), and a main circuit board (90). The display panel (30) is disposed on the bracket (50). The first force sensor (100) is disposed between the display panel (30) and the bracket (50), the first force sensor (100) being adjacent to a first edge of the display panel (30). The main circuit board (90) is disposed below the bracket (50) such that the bracket (50) is disposed between the display panel (30) and the main circuit board (90). The bracket includes a first hole (HOL1) exposing the main circuit board (90). The first force sensor (100) is connected to the main circuit board (90) through the first hole (HOL1).