Capacitive Touch Screen Dermatoglyphics Scan Region Selection

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Current dermatoglyphics identification systems on touch screen panels require scanning and processing of large amounts of data across the entire display region, leading to increased time and power consumption, especially on larger screens, due to the integration of separate dermatoglyphics identification modules outside the display region.

Innovation Solution

A dermatoglyphics data acquisition device with a capacitive touch control circuit and a controller that selects a smaller dermatoglyphics scan region based on signal distribution, reducing the area to be scanned and processed, integrated within the in-cell touch screen panel, utilizing a capacitive touch control circuit and photosensitive touch control components to efficiently identify dermatoglyphics.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If the entire display region is scanned for dermatoglyphics identification, then identification accuracy is maintained, but time consumption and power consumption increase significantly

Engineering Contradiction:

Improveidentification accuracyVSAvoidtime consumption

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The patent divides the display region into multiple sub-regions and uses signal distribution to identify the touch region, then further segments the touch region into a scan region for dermatoglyphics identification. This segmentation approach reduces the scanning area from the entire display region to only the necessary touch region, significantly reducing time consumption while maintaining identification accuracy.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies different scanning strategies to different regions of the display. Instead of uniformly scanning the entire display, it identifies the local touch region through signal distribution analysis and concentrates scanning resources on this local region. This local quality approach ensures accurate identification while minimizing overall scanning time and power consumption.

Inventive Principle:

Principle #3Local quality

2Measurement precision

If the entire display region is scanned for dermatoglyphics identification, then identification accuracy is maintained, but power consumption increases significantly

Engineering Contradiction:

Improveidentification accuracyVSAvoidpower consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by stationary object

Solution Approach 1:

The patent segments the display region into multiple sub-regions and uses signal distribution to identify the touch region, then further segments the touch region into a scan region for dermatoglyphics identification. This segmentation approach reduces the scanning area from the entire display region to only the necessary touch region, significantly reducing time consumption while maintaining identification accuracy.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Inventive Principle:

Principle #3Local quality

3Adaptability or versatility

If a separate dermatoglyphics identification module is integrated outside the display region, then identification function is added, but device complexity increases

Engineering Contradiction:

Improveidentification functionVSAvoiddevice complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent merges the dermatoglyphics identification function with the existing touch screen display system. The identification module is integrated into the display region, sharing the same hardware resources and control mechanisms. This merging approach adds the identification function while minimizing additional complexity by utilizing existing system components.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent implements a multi-functional system where the touch screen display region serves both display purposes and dermatoglyphics identification purposes. The same hardware infrastructure supports multiple functions, reducing the need for separate dedicated components and thereby reducing overall device complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 significantly reduces the time and power consumption required for dermatoglyphics identification by limiting the scan area within the touch region, enhancing recognition efficiency while maintaining high accuracy.

Implementation Method 1

a capacitive touch control circuit, configured to detect a touch region of a dermatoglyphics on a touch device

Methodology Applied

Scientific EffectCapacitance: Capacitance

Data Source

PatentUS10977476B2Dermatoglyphics data acquisition device, acquisition method thereof and display device

Publication Date: 2021.04.13 BEIJING BOE OPTOELECTRONCIS TECH CO LTD

AI summary

A dermatoglyphics data acquisition device, an acquisition method thereof and a display device are disclosed. The acquisition method of dermatoglyphics data includes: detecting a touch region of a dermatoglyphics on a touch device by a capacitive touch control circuit; selecting a touch center region in the touch region and selecting a characteristic region in the touch center region by a controller, according to a signal amount distribution of a touch signal generated by dermatoglyphics contact in the touch region, and determining the characteristic region as a dermatoglyphics scan region by the controller; and scanning a dermatoglyphics in the dermatoglyphics scan region and generating the dermatoglyphics data by a dermatoglyphics identification circuit.