Integrated Touch and Light Sensing Unit for Display Devices
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Solution Overview
Problem
Current display devices lack the capability to simultaneously detect touch inputs and ambient light, which is essential for intuitive user interaction and environmental adaptability.
Innovation Solution
A display device incorporating a sensing unit with both a touch-detecting first sensing unit and a light-detecting second sensing unit, along with a sensing driver IC and controller to differentiate and process the respective signals, allowing for the generation of sensing voltages that distinguish between touch and light inputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a display device uses separate sensing units for touch detection and light detection, then the device can detect both touch and light, but the device complexity increases
Solution Approach 1:
The patent combines touch detection and light detection functions into a single integrated sensing unit. The sensing unit includes both a touch sensor for detecting touch inputs and a light sensor for detecting ambient light, allowing both functions to be performed by one unified structure rather than separate independent units, thus reducing overall device complexity while maintaining dual detection capability
Solution Approach 2:
The sensing unit is designed as a multi-functional component that performs both touch detection and light detection. By making the sensing unit universal and capable of handling multiple sensing tasks, the patent avoids the need for separate specialized units for each function, thereby reducing device complexity while improving adaptability
2Adaptability or versatility
If the sensing unit detects both touch and light simultaneously, then user interaction and environmental adaptability are enhanced, but the difficulty of detecting and measuring increases
Solution Approach 1:
The patent segments the sensing signals by creating distinct signal paths and processing channels for touch detection and light detection within the sensing unit. The touch sensor and light sensor generate separate sensing signals that are processed independently, allowing the system to differentiate between touch inputs and light conditions even though both are detected by the same integrated sensing unit
Solution Approach 2:
The patent introduces an intermediary processing mechanism that receives signals from both the touch sensor and light sensor and distinguishes between them. This intermediary layer processes the combined signals and separates the touch signal from the light signal, making it easier to detect and measure each type of input independently despite the simultaneous detection capability
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 the display device to effectively detect and differentiate between touch inputs and ambient light, enhancing user interaction and environmental adaptability by providing a unified sensing solution.
Implementation Method 1
a second sensing unit configured to detect light and output a second sensing signal
Data Source
AI summary
Provided are a display device and a sensing method thereof that include: a display panel comprising a plurality of pixels; a first sensing unit configured to detect a touch of the display panel and output a first sensing signal; a second sensing unit configured to detect light and output a second sensing signal; a sensing driver IC configured to output the first sensing signal and the second sensing signal received from the first sensing unit and the second sensing unit as sensing voltages; and a controller configured to divide the sensing voltages received from the sensing device IC into the first sensing signal and the second sensing signal.