Photonic crystals in biology

Poster Session, Tuesday, June 15
Theme A1 - B702
Liquid Crystal Displays (LCD) Role in Different Aspects in Social Life
Sönmez Arslan 1,2* ,Ömer Polat, 3 S.Eren San 4 , Selahattin Sönmezsoy 5 , Ramazan Kaynak 6
1 Department of Materials Science Engineering, Nanotechnology Center,Gebze Institute of Technology, Kocaeli,41400, Turkey
2 Department of Chemistry, Batman University, Batman ,72100, Turkey
3 Department of Sience, Bahcesehir University, Istanbul, 34353, Turkey
4 Organic Electronics Group, Department of Physics, Gebze Institute of Technology, Kocaeli,41400, Turkey
5 Department of Sociology, Batman University, Batman ,72100, Turkey
6 Department of Management,Gebze Institute of Technology, Kocaeli,41400, Turkey
Abstract— Social, economical, and environmental effects of Liquid Crystal Displays(LCD) which have been using widely in
televisions, computers, mobile phones, cameras, video cameras, bill boards were discussed. The periods before and after
introducing of LCDs were compared in terms of Energy, Information Technology ,Communication Technology, Environment,
and Social Life. Advantages of LCDs were explained depending on development of Nanotechnology in displays. LCDs’latest
position was evaluated. ………………………………………………………………………………………………………….
In the begining of 1960s Liquid Crystal Displays (LCDs)
have entered to our life. When we go back to 1970s LCDs
have been observed in calculators and watches[1]. They had
only black and white displays at that time. LCDs helped so
much in daily life comparing with mechanical wristwatch and
abacus in those years depending on that technology. LCDs
important role in social life, starting to development beginning
from primitive technology to Nanotechnology, have been
increasing day by day. At present, LCDs are involved in
human life in different aspects such as communication,
information technologies, entertainment, cultural and artistic
activities.
a
b
Figure: a) Early wrist watch(1960s) b) Black-white LCD in watch
In view of energy and usage, TV screens made of LCDs
exhibit low energy consumption with respect to televisions
produced by Cathode Ray Tube(CRT). This situation makes
LCDs more advantages to televisions made of CRT. For
instance, televisions made in small size with LCDs can be
used with low voltage (around 10 Vs). So even a couple of
batteries are capable of usage of LCD TV.[2] This case
enables us to use TVs with LCDs in a wide range of places
(without electrical sources) which we can never have this
chance to use TVs with CRT.
In point of information technologies, mobility feature of
LCDs have shown in movable computers such as laptops.
Low energy consumption concept, decrease in size and
increase in mobility have made our life much easier by
computers produced with LCDs such as laptops as mentioned
above than desktop computers.[3] With the help of LCD
technology improving of laptops, today, access to information
and usage of laptops are possible in every single moment of
daily life.
Importance of LCDs in communication technology has
outcome with progressing of mobile phones[4]. Before
introducing mobile technology to our life, regular phones were
playing partially role. Entering with mobile communication to
our life, communication put into effect in every moment of
daily life. Improvement of LCDs technology has been playing
most important role in progressing of mobile phones.
In point of environmental aspects of LCDs we see that:LCD
does not emit that much of radiation compared to television
with CRT. When we compare them regarding emitting
radiation, radiation emitted with sight almost approaches to
zero in LCDs which leads to positive effect on environmental
pollution and human health. All displays with LCD like TV,
computer compared to displays with CRT has been helping us
in terms of environment and human health.[5]
When we consider LCDs in view of social aspect, we can
tell that they occupy important role. Starting from crowded
entertainment places and shopping centers and places where
offical services are served, on deck of ferries, at ports, on
public and private transportations etc., by serving LCDs is an
significant indicator of LCDs that they have played very
effective role in social life. Besides, nanotechnology has
brought a new perspective to advertising sector by introducing
giant size of LCDs resuls in activity and new dimention in
commercial life.
To sum up, replacing TVs with CRT with LCD technology
the world has started a new period considering energy saving,
economy, environment and social communication. It is not
difficult to say from now on that the role and impact of LCDs
in our rotuine life will be more effective as nanothechnology
develops and become a piece of our lives.
*Corresponding author: arslanso@gyte.edu.tr , arslanso@hotmail.com
[1] Castellano J. A. , Liquid Gold: The Story of Liquid Crystal Displays and
the Creation of an Industry, World Scientific Publishing, Singapore, 2005.
[2] M.T.Chena, C. C. Linb, Int. Jrn of Industrial Ergonomics, 34, 167–174 ,
(2004)
[3] A. Dhir, The Digital Consumer Technology Handbook, Newnes
Publications, U.S.A. (2004)lic
[4] D. Mentley, “Miniature display market and technology trends,” presented
at the Flat Information Displays Conf., Monterey, CA, Dec. (1998)
[5] M. L. Socolof , J.G. Overly, J.R. Geibig, Jrn. of Cleaner Production, 13,
1281-1294, (2005)
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