Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Design Example: Resistive Touchscreen01:14

Design Example: Resistive Touchscreen

650
A device engineer plays a crucial role in designing user interfaces for mobile devices. One such interface is the resistive touchscreen, which fundamentally consists of two metallic layers: a flexible upper layer and a rigid lower layer, separated by a narrow gap. The high resistance between these two layers is a key characteristic of this design.
When a user touches the screen, the two layers make contact at a specific point known as the touchpoint. This contact reduces the resistance between...
650
PD Controller: Design01:26

PD Controller: Design

550
In automotive engineering, car suspension systems often employ Proportional Derivative (PD) controllers to enhance performance. PD controllers are utilized to adjust the damping force in response to road conditions. A controller, acting as an amplifier with a constant gain, demonstrates proportional control, with output directly mirroring input.
Designing a continuous-data controller requires selecting and linking components like adders and integrators, which are fundamental in Proportional,...
550
Design Example01:23

Design Example

487
The innovation of touch-tone telephony revolutionized the telecommunications industry by replacing the traditional rotary dial with a dual-tone multi-frequency (DTMF) signaling system. This system uses a matrix-style keypad with buttons arranged in four rows and three columns, creating 12 distinct signals each assigned to a pair of frequencies. Each button press results in a simultaneous generation of two sinusoidal tones – one from a low-frequency group (697 to 941 Hz) and one from a...
487
PI Controller: Design01:24

PI Controller: Design

1.1K
Proportional Integral (PI) controllers are a fundamental component in modern control systems, widely used to enhance performance and mitigate steady-state errors. They are particularly effective in applications such as automatic brightness adjustment on smartphones, where they excel at mitigating steady-state errors for step-function inputs. Unlike PD controllers, which require time-varying errors to function optimally, PI controllers leverage their integral component to address residual...
1.1K
Potentiometer01:30

Potentiometer

1.7K
Voltage and current measurements using a standard voltmeter and ammeter alter the circuit being measured either by drawing or resisting the current flow, which introduces uncertainties in the measurements. Null measurements balance the voltages so that no current flows through the measuring device and, therefore, no alterations occur in the measured circuit.
Suppose the emf of a battery needs to be measured. If the battery is directly connected to a standard voltmeter, the measured quantity is...
1.7K
Tactile and Chemical Senses01:27

Tactile and Chemical Senses

629
Tactile senses encompass touch, temperature, and pain, each mediated by specific receptors. Touch receptors detect mechanical energy or pressure against the skin. Sensory fibers from these receptors enter the spinal cord and relay information to the brain stem. Here, most fibers cross over to the opposite side of the brain. The touch information then moves to the thalamus, which projects a map of the body's surface onto the somatosensory areas of the parietal lobes in the cerebral cortex.
629

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Comprehensive Comparison of Front- and Back-Illuminated Single-Photon Avalanche Diodes in 110 nm Standard CMOS Image Sensor Technology.

Sensors (Basel, Switzerland)·2026
Same author

A new genetic architecture for PHS resistance in rice: deciphering the epistatic interactions of three major QTL.

Frontiers in plant science·2026
Same author

Integrative genomic and transcriptomic dissection of salt tolerance for <i>Japonica</i> rice improvement.

Frontiers in plant science·2026
Same author

A scalable neural network emulator with MRAM-based mixed-signal circuits.

Frontiers in neuroscience·2025
Same author

Intermolecular Interactions between Cysteine and Aromatic Amino Acids with a Phenyl Moiety in the DNA-Binding Domain of Heat Shock Factor 1 Regulate Thermal Stress-Induced Trimerization.

Biochemistry·2024
Same author

pH Dependence of HSF1 trimerization is shaped by intramolecular interactions.

Biochemical and biophysical research communications·2024

Related Experiment Video

Updated: Dec 29, 2025

Author Spotlight: Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing
05:57

Author Spotlight: Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing

Published on: March 17, 2023

3.8K

Fully Differential Touch Screen Controller with Wide Input Dynamic Range for Thin Displays.

Chang-Ju Lee1,2, Jong Kang Park1, Han-Eol Seo2

  • 1College of Information and Communication Engineering, Sungkyunkwan University, Suwon 16419, Korea.

Sensors (Basel, Switzerland)
|February 9, 2020
PubMed
Summary

Smartphone touchscreens suffer from display noise due to increased capacitance. A novel charge amplifier circuit effectively mitigates this noise, improving touch performance in thin displays.

Keywords:
display noisefully differential charge amplifierthin displaytouch screen panelwide input dynamic range

More Related Videos

Stimulation Location Determination using a 3D Digitizer with High-Definition Transcranial Direct Current Stimulation
07:20

Stimulation Location Determination using a 3D Digitizer with High-Definition Transcranial Direct Current Stimulation

Published on: December 20, 2019

7.3K
The Effect of Anodization Parameters on the Aluminum Oxide Dielectric Layer of Thin-Film Transistors
12:32

The Effect of Anodization Parameters on the Aluminum Oxide Dielectric Layer of Thin-Film Transistors

Published on: May 24, 2020

9.1K

Related Experiment Videos

Last Updated: Dec 29, 2025

Author Spotlight: Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing
05:57

Author Spotlight: Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing

Published on: March 17, 2023

3.8K
Stimulation Location Determination using a 3D Digitizer with High-Definition Transcranial Direct Current Stimulation
07:20

Stimulation Location Determination using a 3D Digitizer with High-Definition Transcranial Direct Current Stimulation

Published on: December 20, 2019

7.3K
The Effect of Anodization Parameters on the Aluminum Oxide Dielectric Layer of Thin-Film Transistors
12:32

The Effect of Anodization Parameters on the Aluminum Oxide Dielectric Layer of Thin-Film Transistors

Published on: May 24, 2020

9.1K

Area of Science:

  • Electrical Engineering
  • Materials Science
  • Human-Computer Interaction

Background:

  • Increasing capacitance between display and touch screen panel (TSP) electrodes in thinner smartphones degrades touch performance.
  • Time-varying display signals coupled into the TSP are a primary cause of touch interference.

Purpose of the Study:

  • To analyze and quantify display noise in modern smartphone designs.
  • To develop and validate a circuit-level solution for mitigating display noise in TSPs.

Main Methods:

  • Analysis of smartphone display structure and operation to determine peak display noise.
  • Design and fabrication of a fully differential charge amplifier circuit.
  • Testing the circuit's performance using a fabricated CMOS chip under simulated display noise conditions.

Main Results:

  • Demonstrated that maximum peak display noise can reach approximately 30% of the display grayscale's maximum voltage difference.
  • Achieved a signal-to-noise ratio (SNR) of 41 dB with the proposed charge amplifier.
  • Successfully mitigated display noise from 5-V swing, 100 kHz display pulses.

Conclusions:

  • The proposed fully differential charge amplifier effectively reduces display noise interference in TSPs.
  • The solution offers a viable method for maintaining high touch performance in increasingly thin smartphone displays.
  • This work contributes to the advancement of reliable touch sensing technology in mobile devices.