Flexible Display Sliding Position Sensing With Conductive Roller
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Solution Overview
Problem
Conventional electronic devices with flexible displays face inaccuracies in determining their extended state due to motor-based tracking or magnet-Hall sensor systems, leading to potential errors in state estimation.
Innovation Solution
An electronic device with a sliding mechanism using sensing pads and a conductive roller to accurately determine its state by sensing contact between these components, compensating for discrepancies in expected and actual contact times to enhance precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If motor-based tracking or magnet-Hall sensor systems are used to determine the extended state, then the device can track its state, but accuracy decreases and errors occur
Solution Approach 1:
The patent replaces motor-based tracking and magnet-Hall sensor systems with a contact-based sensing system using sensing pads and a conductive roller. This mechanical contact system directly detects the extended state through physical contact, eliminating the inaccuracies of electromagnetic sensing methods and providing reliable state determination.
Solution Approach 2:
The conductive roller acts as an intermediary between the moving housing and the sensing pads. It transfers the mechanical motion of the housing to the sensing pads through controlled contact, enabling accurate state detection while isolating the sensing system from direct mechanical stress.
2Measurement precision
If the conductive roller makes contact with sensing pads to detect state, then measurement precision improves, but device complexity increases
Solution Approach 1:
The sensing system is segmented into discrete sensing pads positioned at specific locations corresponding to different extended states. Each pad independently detects a specific state, allowing the system to determine the overall state through simple contact detection at multiple points rather than requiring a complex continuous sensing mechanism.
Solution Approach 2:
The sensing pads are positioned to correspond with specific extended states of the device. By creating a simplified contact model that mirrors the physical states, the system can accurately determine device state through simple contact detection rather than complex measurements.
3Adaptability or versatility
If the exposed region of the flexible display is varied in size through sliding, then adaptability improves, but difficulty in detecting and measuring the state increases
Solution Approach 1:
The sensing pads are pre-positioned at locations that correspond to expected extended states of the device. This preliminary arrangement ensures that as the housing slides to different positions, the conductive roller will naturally contact the appropriate sensing pad, making state detection straightforward without requiring complex real-time measurements.
Solution Approach 2:
The system uses contact state changes (analogous to color changes in visual systems) to indicate different extended states. When the conductive roller contacts a specific sensing pad, it creates a detectable electrical signal that clearly indicates the current state, making measurement simple and unambiguous.
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 solution provides accurate determination of the electronic device's state by precisely tracking the sliding motion, improving reliability and reducing errors in state estimation.
Implementation Method 1
The conductive roller is configured to make contact with a part of the plurality of sensing pads as the second housing slides relative to the first housing
Data Source
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AI summary
An electronic apparatus according to an embodiment may comprise: a first housing; a second housing coupled to the first housing so as to be able to slide in a first direction and a second direction opposite the first direction; a flexible display in which the size of an exposed area exposed to the front surface of the electronic apparatus changes in response to the sliding of the second housing; a sensing board located in the first housing; and a conductive roller rotatably located in the second housing. A plurality of sensing pads may be arranged on one surface of the sensing board. The conductive roller may be configured to come into contact with some of the plurality of sensing pads as the second housing slides relative to the first housing. The plurality of sensing pads may include one or more position pads which are configured to come into contact with the conductive roller in a state in which the exposed area of the flexible display is formed in one or more designated sizes.