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A

Seminar report

on

TOUCH SCREEN TECHNOLOGY

Submitted

in partial fulfillment

for the award of the degree of

Bachelor of Technology

In department of Electronics and Communication Engineering

Submitted To: Submitted By:

Department of Electronics Prudhvi Bade

Roll No: 8EC-66

JNU-JPR 2009/00704

Department of Electronics and Communication Engineering

School of Engineering and Technology

Jaipur National University, Jaipur

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May 2013

CERTIFICATE

This is to certify that the work which is being presented in the report entitled TOUCH

SCREEN TECHNOLOGY by Prudhvi Bade in partial fulfillment of requirements

for the awards of the degree of B.Tech (4th year Elect. & Comm.) Submitted to the

department of Electronics & Communication at JAIPUR NATIONAL UNIVERSITY,

JAIPURin an authentic record of his own work carried out during the period from FEB

4,2013 to FEB 26,2013.

Signature of the student

Prudhvi Bade

The B.tech (4th year Electronics & comm.) seminar presentation of Prudhvi Bade has

been held on 26 of February and accepted.

Internal Examiner 1 External Examiner

Internal Examiner 2

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ACKNOWLEDGEMENT

We are grateful to have opportunity to work with Asst.Prof. Ms. Shally Goyal,

Department of Electronics & Communication Engineering, who had kept us on our

toe and guided us at each step. Working under him was wonderful experience. We

learned not only the technical aspects but also the practical qualities of working as a

team. We are highly inspired by his dedication to work, as he made continuous effort to

make this project successful.

We are grateful to Mr. R.L Dua H.O.D of Electronics and Communication

department, for giving us this opportunity to work on this topic in this esteemed

organization.

We also thank Ms. Sakshi Verma, for their for their concern for our well being from

time to time, for their constructive technical advice, constant guidance and

encouragement. We would like to express our gratitude towards our parents whose

blessings are always with us. Their life time support and encouragement has provided the

basic foundation of any success, we will ever achieve.

PRUDHVI BADE

8EC-66

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ABSTRACT

First computers became more visual, then they took a step further to understand vocal

commands and now they have gone a step further and became TOUCHY, that is skin to

screen. A Touch Screen is an easy to use input device that allows users to control PC

software and DVD video by touching the display screen. A touch system consists of a

touch Sensor that receives the touch input, a Controller, and a Driver. The most

commonly used touch technologies are the Capacitive & Resistive systems. The other

technologies used in this field are Infrared technology, Near Field Imaging & SAW

(surface acoustic wave technology). These technologies are latest in this field but are verymuch expensive. The uses of touch systems as Graphical User Interface (GUI) devices

for computers continues to grow popularity. Touch systems are used for many

applications such as ATMs, point-ofsale systems, industrial controls, casinos & public

kiosks etc. Touch system is basically an alternative for a mouse or keyboard The market

for touch system is going to be around $2.5 billion by 2004. Various companies involved

in development of touch systems mainly are Philips, Samsung etc. Even touch screen

mobile phones have been developed by Philips.

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LIST OF CONTENTS

1. INTRODUCTION.... 1

1.1. WORKING OF A TOUCH SCREEN.,1

2. TOUCH TECHNOLOGIES.. ..4

2.1. 4 WIRE RESISTIVE TOUCH SCREEN.....5

2.2. 5 WIRE RESISTIVE TOUCH SCREEN ....6

2.3. CAPACITIVE TOUCH SCREEN...7

2.4. SURFACE WAVE TOUCH SCREEN....8

2.5. NEAR FIELD IMAGING TOUCH SCREEN....9

2.6. INFRARED TOUCH SCREEN...9

3. PROS AND CONS OF TOUCH SCREEN... 10

4. USES OF TOUCH SCREEN .....11

5. USES OF TOUCH SCREEN IN REGULAR LIFE....12

5.1 APPLICATIONS.........14

5.2ADVANTAGES OVER OTHER POINTING DEVICES ..15

6. LIMITATIONS... 15

CONCLUSION.. 16

REFERENCE...,,,...... 17

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LIST OF FIGURES

FIGURE 1.1:Touch Screen Components.2

FIGURE 2.1: Resistive wire Touch Screen.4

FIGURE 2.2: Resistive 5 wire Touch Screen .5

FIGURE 2.3:Capacitive Touch Screen ...7

FIGURE 2.4:Surface Wave Touch Screen. .8

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