Touchscreen Wake Control for Buttonless Display Activation
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Solution Overview
Problem
Mobile devices face issues with power consumption and intuitive mode switching due to separate power buttons that can lead to accidental activation or deactivation, making it inconvenient to control display modes.
Innovation Solution
A method and electronic device design that incorporates a touch sensor on the display, allowing users to control the display by inputting information, such as gestures or patterns, to wake or lock the device, eliminating the need for a separate power button and reducing power consumption by partially charging sensing elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a separate power button is used to control display activation, then the display can be activated or deactivated, but the device housing develops protrusions and accidental activation occurs
Solution Approach 1:
The patent merges the power button function with the existing housing surface by integrating a capacitive touch sensor directly into the housing. This eliminates the need for a separate protruding physical button, maintaining a flush housing surface while preserving the display activation functionality through touch-based input on the housing surface.
Solution Approach 2:
The patent replaces the mechanical push-button system with a capacitive touch sensor system. Instead of using a physical button that protrudes from the housing, the invention uses electrical field-based touch detection embedded in the housing surface, eliminating mechanical protrusions while maintaining the activation function.
2Loss of energy
If the display and touch sensor are both deactivated to reduce power consumption, then power consumption decreases, but the user cannot wake up the device
Solution Approach 1:
The patent segments the device into two functional parts with different power states: the display is deactivated to save power, while the touch sensor remains active in a low-power state. This segmentation allows the system to reduce overall power consumption while maintaining wake-up capability through the independently powered touch sensor.
Solution Approach 2:
The touch sensor performs preliminary detection action while the display remains off. The sensor can detect touch inputs in advance and trigger display activation only when needed, avoiding the continuous power consumption of keeping the display on while enabling wake-up functionality.
3Ease of manufacture
If the power button is made as a separate component, then it can be manufactured independently, but it creates protrusions and requires placement holes in the housing
Solution Approach 1:
The patent merges the power button functionality into the housing structure itself by integrating the capacitive touch sensor directly into the housing. This eliminates the need for separate button components, placement holes, and associated assembly complexity, while maintaining manufacturing flexibility through standardized touch sensor integration processes.
Data Source
AI summary
A method for controlling a display of an electronic device is proposed along with the electronic device using the same. The electronic device has the display and a touch sensor disposed on the display. The method includes the following steps. The touch sensor is driven when the display is not driven to display an image. A sensing signal is received from the touch sensor. First information is determined based on the sensing signal. The first information is compared with first predetermined information. The display is driven to display the image when the first information matches the predetermined information.