A Touch Sensor Controller IC Adopting Differential Measurement for Projected Capacitive Touch Panel Systems

2012 ◽  
Author(s):  
Siwei Zhan ◽  
Tingcun Wei ◽  
Bo Li ◽  
Wei Liu ◽  
Qimeng Chen
Keyword(s):  
Differential Measurement ◽  
Touch Panel ◽  
Touch Sensor

scholarly journals Contamination Improvement of Touch Panel and Color Filter Production Processes of Lean Six Sigma

2019 ◽  
Vol 9 (9) ◽  
pp. 1893 ◽  
Author(s):  
Chia-Nan Wang ◽  
Po-Chih Chiu ◽  
I-Fang Cheng ◽  
Ying-Fang Huang
Keyword(s):  
Six Sigma ◽  
Lean Six Sigma ◽  
Color Filter ◽  
Improvement Rate ◽  
Touch Panel ◽  
Touch Sensor ◽  
Average Defect ◽  
Component Manufacturing ◽  
One Year ◽  
Touch Panels

Color filter (CF) and touch panel (or touch sensor (TS)) are important components for optoelectronic materials and component manufacturing. Due to the cut-throat world of market in the manufacturing, the processes of color filters are similar to touch sensors. The case invested in the production of touch panels in 2009. After a long period of quality improvement, the problem of contamination pollution still accounts for ~30% of the total variation. In addition to the external problem, there is also the fail of communication caused by dirt or peeling. Therefore, the case was established to improve the dirt defect by setting up Lean Six Sigma project, and the project goal was to reduce the proportion to 0.18%. After three months of improvement and three months of continuous observation, the abnormal proportion of pollution decreased from 0.35% of the overall average defect loss to 0.13% (the improvement rate reached 63%). It is estimated that the entire product can generate 3 million (USD) of performance for the case in one year. It is also possible to increase the customer’s satisfaction and the company’s technical competitiveness by improving yield and achieving the continuous improvement of objectives.

Voice-supported Active Touch Panel Using Micro Touch Sensor with PZT Thin Film

2003 ◽  
Vol 15 (4) ◽  
pp. 384-390
Author(s):  
Gui Ryong Kwon ◽  
◽  
Fumihito Arai ◽  
Toshio Fukuda ◽  
Koichi Itoigawa ◽  
...  
Keyword(s):  
Thin Film ◽  
Active Touch ◽  
Online Information ◽  
Navigation Systems ◽  
Touch Panel ◽  
Thin Film Sensors ◽  
Touch Sensor ◽  
Pzt Thin Film ◽  
The Many ◽  
The Voice

Today's automobiles serve not only as vehicles but also as mobile offices combining communication tools such as cellphones and car navigation systems providing online information services. The many switches are conventionally distributed on the dashboard. A move is under way, however, to combine them into a multifunctional touch panel. We propose a voice-supported active touch panel. Since information feedback to the operator is important in ensuring correct function selection, the panel we designed combines a vibrator and voice explanation. Touch sensors use PZT thin film sensors. The voice explanation uses a quick response system. This paper reports the features and configuration of the voice-supported active touch panel.

scholarly journals Virtual Touch Sensor Using a Depth Camera

Sensors ◽  
2019 ◽  
Vol 19 (4) ◽  
pp. 885 ◽  
Author(s):  
Dong-seok Lee ◽  
Soon-kak Kwon
Keyword(s):  
Depth Camera ◽  
Touch Panel ◽  
Touch Sensor ◽  
Weight Parameter ◽  
Touch Point ◽  
Point Detection ◽  
Touch Interfaces

In this paper, a virtual touch sensor using a depth camera is proposed. Touch regions are detected by finding each region that consists of pixels within a certain distance from a touch surface. Touch points are detected by finding a pixel in each touch region whose neighboring pixels are closest to surfaces. A touch path error due to noise in the depth picture is corrected through a filter that introduces a weight parameter in order to respond quickly even with sudden changes. The virtual touch sensor is implemented by using the proposed methods for the touch point detection and the touch path correction. In the virtual touch sensor, a touch surface and pixels of a depth picture can be regarded as a virtual touch panel and virtual touch units, respectively. The virtual touch sensor can be applied to wide fields of touch interfaces. Results of simulations show the implementation of the touch-pen interface using the virtual touch sensor.

The Radio Probe™: A New Measurement Tool for High Speed Integrated Circuits

2005 ◽  
Author(s):  
Mark Kimball
Keyword(s):  
Integrated Circuits ◽  
Integrated Circuit ◽  
High Speed ◽  
Attenuation Factor ◽  
Cost Effective ◽  
Frequency Measurement ◽  
Single Frequency ◽  
Measurement Tool ◽  
Probe Design ◽  
Differential Measurement

Abstract This article presents a novel tool designed to allow circuit node measurements in a radio frequency (RF) integrated circuit. The discussion covers RF circuit problems; provides details on the Radio Probe design, which achieves an input impedance of 50Kohms and an overall attenuation factor of 0 dB; and describes signal to noise issues in the output signal, along with their improvement techniques. This cost-effective solution incorporates features that make it well suited to the task of differential measurement of circuit nodes within an RF IC. The Radio Probe concept offers a number of advantages compared to active probes. It is a single frequency measurement tool, so it complements, rather than replaces, active probes.

Investigation of a Capacitor Array of a Composite Capacitive Touch Panel

2018 ◽  
Vol 47 (5) ◽  
pp. 22-29
Author(s):  
T. Terent’ev ◽  
◽  
V. Shakhnov ◽  
A. Vlasov ◽  
A. Krivoshein ◽  
...  
Keyword(s):  
Touch Panel ◽  
Capacitor Array

Evaluation of the Integrated In-cell Electromagnetic Resonance Sensor and Capacitive Touch Sensor

2019 ◽  
pp. 1644
Author(s):  
Yuji Suzuki ◽  
Satoshi Uchino ◽  
Kohei Azumi ◽  
Tadayoshi Katsuta ◽  
Daichi Suzuki ◽  
...  
Keyword(s):  
Touch Sensor ◽  
Electromagnetic Resonance ◽  
Resonance Sensor

scholarly journals Multi-Touch Interaction Generation Device by Spatiotemporally Switching Electrodes

Electronics ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 1475
Author(s):  
Masahiro Okamoto ◽  
Kazuya Murao
Keyword(s):  
High Speed ◽  
High Accuracy ◽  
Conductive Ink ◽  
Control Board ◽  
Touch Panel ◽  
Electrode Size ◽  
Touch Input ◽  
Touch Interaction ◽  
Multiple Electrodes ◽  
Touch Panels

With the spread of devices equipped with touch panels, such as smartphones, tablets, and laptops, the opportunity for users to perform touch interaction has increased. In this paper, we constructed a device that generates multi-touch interactions to realize high-speed, continuous, or hands-free touch input on a touch panel. The proposed device consists of an electrode sheet printed with multiple electrodes using conductive ink and a voltage control board, and generates eight multi-touch interactions: tap, double-tap, long-press, press-and-tap, swipe, pinch-in, pinch-out, and rotation, by changing the capacitance of the touch panel in time and space. In preliminary experiments, we investigated the appropriate electrode size and spacing for generating multi-touch interactions, and then implemented the device. From the evaluation experiments, it was confirmed that the proposed device can generate multi-touch interactions with high accuracy. As a result, tap, press-and-tap, swipe, pinch-in, pinch-out, and rotation can be generated with a success rate of 100%. It was confirmed that all the multi-touch interactions evaluated by the proposed device could be generated with high accuracy and acceptable speed.

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