Display Panel Sensor Reset Timing for Efficient User Input Detection
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Solution Overview
Problem
Existing display devices face challenges in efficiently detecting user inputs while minimizing power consumption and reducing stress on sensors, particularly when user input is not imminent.
Innovation Solution
A display device with a sensor controller and driving controller that determines the timing for activating and deactivating reset control signals for sensors based on user input attempts and actual input, optimizing sensor operation and reducing unnecessary power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If reset control signals are continuously activated for sensors, then user input detection reliability is improved, but power consumption increases and sensor stress increases
Solution Approach 1:
The reset control signal is activated periodically based on detected user input events rather than continuously. The controller detects when a user interacts with the display and triggers reset signals only at those specific moments, converting continuous operation into periodic operation to reduce power consumption while maintaining detection reliability.
Solution Approach 2:
The system performs preliminary detection of user input attempts before activating the reset control signal. By monitoring for user interaction first and then conditionally triggering the reset signal based on this preliminary detection, the system avoids unnecessary signal activation and associated power consumption.
2Reliability
If reset control signals are continuously activated for sensors, then user input detection reliability is improved, but sensor stress increases
Solution Approach 1:
The reset control signal is activated periodically based on detected user input events rather than continuously. This periodic activation pattern reduces the cumulative stress on sensors by limiting reset signal occurrences to only when user input is actually detected, while still maintaining reliable detection capability.
Solution Approach 2:
The system performs preliminary detection of user input attempts before activating the reset control signal. This preliminary action serves as a filter, ensuring that reset signals are only sent when genuinely needed, thereby protecting sensors from unnecessary stress while preserving detection reliability.
3Measurement precision
If sensors are reset frequently, then detection accuracy is improved, but power consumption increases
Solution Approach 1:
Sensor reset operations are performed periodically based on user input detection events rather than at fixed intervals or continuously. This event-driven periodic reset strategy maintains detection accuracy by resetting sensors when needed while avoiding unnecessary resets that would waste power.
Solution Approach 2:
The controller performs preliminary detection of user input before triggering sensor reset. This preliminary action ensures that reset operations are only initiated when user interaction is detected, optimizing the balance between maintaining detection accuracy and minimizing power consumption from unnecessary reset operations.
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 approach enhances the efficiency of user input detection by minimizing unnecessary sensor resets, reducing power consumption, and improving overall performance and reliability of the display device.
Implementation Method 1
Each of the sensors includes a light detector to detect user information
Data Source
AI summary
A display device includes a display panel, a sensor controller, and a driving controller. The display panel includes a plurality of pixels, each of which includes a light emitter to emit light to display an image and a plurality of sensors. Each of the sensors includes a light detector to detect user information. The sensor controller is electrically connected with the sensors and is configured to provide a reset control signal to the plurality of sensors. The driving controller determines a first time point initiating when a user is able to attempt to input the user information, determines a second time point when the user information is actually input, and provides the sensor controller with an enable signal to activate the reset control signal after the first time point and deactivate the reset control signal after the second time point.


