Object Sensing Display Blocks for Signal Coupling Artifacts
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Solution Overview
Problem
Display artifacts occur due to the deformation of data signals caused by coupling capacitance between sensing cells and pixels in display devices with object sensing functions.
Innovation Solution
An object sensing device and display device are designed with a plurality of first division blocks driven by a sensing driving device, which provides different driving signals to the blocks to minimize data signal deformation and improve display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a driving signal is provided to the sensing cell to implement object sensing function, then object sensing capability is improved, but data signal deformation occurs due to coupling capacitance causing display artifacts
Solution Approach 1:
The sensing cells are divided into multiple groups (first sensing cell group and second sensing cell group) that are driven alternately with different driving signals. This segmentation allows the system to maintain object sensing capability while reducing the impact of coupling capacitance on data signals by not all sensing cells being active simultaneously.
Solution Approach 2:
The sensing driving device alternately provides first driving signals to the first sensing cell group and second driving signals to the second sensing cell group in a periodic manner. This periodic activation pattern ensures that at any given time, only one group is actively sensing, thereby minimizing coupling capacitance interference with data signals while maintaining continuous object sensing coverage.
2Adaptability or versatility
If sensing cells are driven to detect object proximity or touch, then sensing function is enabled, but image quality deteriorates due to data signal deformation
Solution Approach 1:
By segmenting sensing cells into multiple groups that operate alternately, the system enables comprehensive sensing coverage across the display while ensuring that at any moment, only a portion of sensing cells are active. This reduces the overall coupling capacitance effect on data signals, thereby maintaining image quality while preserving sensing functionality.
Solution Approach 2:
The system changes the driving parameters of sensing cells by applying different driving signals (first driving signal vs. second driving signal) to different groups of sensing cells at different times. This parameter variation allows the system to optimize between sensing performance and display quality by controlling when and how sensing cells are activated.
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 effectively alleviates the change in data signals due to coupling capacitance, thereby reducing display artifacts and enhancing image quality.
Implementation Method 1
coupling capacitance is formed between the sensing cell and the pixel of the panel
Data Source
AI summary
The object sensing device can include a plurality of first division blocks divided along a first direction, and a sensing driving device that drives the plurality of first division blocks. The sensing driving device can provide a first driving signal to two or more first division blocks among the plurality of first division blocks and provide a second driving signal to the remaining first division blocks. The first driving signal and the second driving signal can be different.