Touch-Sensitive Display Flicker Detection with Ambient Light Sensing
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Solution Overview
Problem
Existing technologies face challenges in detecting and mitigating display flicker in various devices, particularly in touch-sensitive devices, especially those using capacitive touch technology, which can be related to data communication with one or more external devices, such as an active stylus used with a touch-sensitive display, often requiring external calibration equipment.
Innovation Solution
The implementation of an ambient light sensor (ALS) beneath the touch-sensitive display to detect display flicker conditions, followed by applying flicker mitigation operations based on parameters like display size, proximity, and touch input position, which may include adjusting electrode voltages, using opposite phase signals, and controlling data transmission frequencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If external calibration equipment is used to detect and mitigate display flicker, then measurement precision is improved, but device complexity and ease of operation worsen
Solution Approach 1:
The display device uses its own ambient light sensor to detect flicker conditions, eliminating the need for external calibration equipment. The system self-diagnoses and self-corrects by applying mitigation operations based on detected flicker parameters, making the device self-sufficient for flicker mitigation
Solution Approach 2:
The ambient light sensor acts as an intermediary component within the display device that detects flicker conditions by measuring light output variations. This internal sensor serves as the mediator between the display output and the control system, enabling automatic detection without external equipment
2Manufacturing precision
If manual calibration is required to correct display flicker, then manufacturing precision is maintained, but ease of operation and productivity worsen
Solution Approach 1:
The system automatically detects flicker conditions and applies mitigation operations without requiring manual user intervention or calibration. The ambient light sensor continuously monitors display output and the controller automatically adjusts parameters to eliminate flicker, making the process transparent to users
Solution Approach 2:
The system proactively detects flicker conditions and applies mitigation operations before users notice or complain about the issue. By continuously monitoring and automatically correcting, the system prevents flicker from affecting user experience rather than requiring reactive manual calibration
3Device complexity
If display flicker is not mitigated, then device complexity remains low, but object-affected harmful factors increase
Solution Approach 1:
The ambient light sensor provides continuous feedback about display output conditions to the controller. When flicker is detected through light output variations, the controller receives this feedback and automatically applies appropriate mitigation operations to correct the issue, creating a closed-loop control system
Solution Approach 2:
The system applies flicker mitigation operations as a preventive measure to counteract harmful flicker effects before they significantly impact users. By detecting flicker conditions early and immediately applying corrections, the system prevents harmful effects from manifesting
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 method effectively reduces display flicker, enhancing user experience by eliminating unsightly flickering and eliminating the need for manual calibration, while improving human-computer interaction.
Implementation Method 1
at an ambient light sensor (ALS) of a touch-sensitive display device, detecting a display flicker condition affecting a touch-sensitive display
Data Source
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AI summary
A method for display flicker mitigation includes, at an ambient light sensor (ALS) (204) of a touch-sensitive display device (200), detecting a display flicker condition (110) affecting a touch-sensitive display (206) of the touch-sensitive display device (200). One or more flicker mitigation operations are applied to alleviate the display flicker condition (110) based at least in part on one or more flicker mitigation parameters (214).