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1. WELCOME

2. VISVESVARAYA TECHNOLOGICAL UNIVERSITY BELAGAVI-590018 Under the guidance of MR.RAVINAIK R Asst . Professor Department of Electronics & Communication Engineering Government Engineering College Huvina hadagali -583219

3. TECHNICAL SEMINAR ON “OLED TECHNOLOGY”

4. CONTENTS: INTRODUCTION LITERATURE SURVEY IMPLEMENTATION APPLICATIONS ADVANTAGES AND DISADVANTAGES REFERENCE

5. INTRODUCTION : Uses organic light emitting diode(OLED). Emerging Technology for displays in devices. Main principle behind OLED technology is electroluminescence. Offers brighter, thinner, high contrast, flexible displays. .

6. LITERATURE SURVEY IN the Year 2013 , Sakib N Rabbani M,A review on fabrication process of organic light emitting diodes International conference on Information ,Electronics and vision Discuss the structure of OLED ,working principal and operation ,fabrication and receive advances. IN the year 2013 , karzayi Organic light emitting diodes :devices and application the material used in organic light emitting devices Patel, Prajapati, OLED A modern display technology ,international journal of scientist and research publication structural Aspects of OLED. Askari, OLED display technology ,American journal of optics and photonics .vol.2,NO.3, 2014, PP.32-36.Investigates the characteristics of OLED.

7. BLOCK DIAGRAM OF OLED TECHNOLOGY

8. WORKING PRINCIPAL A voltage is applied across the anode and cathode. Current flows from cathode to anode through the organic layers. Electrons flow to emissive layer from the cathode. Electrons are removed from conductive layer leaving holes. Holes jump into emissive layer . Electron and hole combine and light emitted.

9. ADVANTAGES Better Picture Quality: OLED displays provide deeper blacks and higher contrast ratios compared to traditional LCD displays, resulting in better overall picture quality. Thinner and Lighter: OLED panels are thinner and lighter than LCDs because they don't require a backlight. This makes them ideal for thin and sleek devices like smartphones and TVs. Faster Refresh Rates: OLED displays have faster response times compared to LCDs, making them suitable for fast-paced content like gaming and sports. Flexible and Curved Screens: OLED technology allows for flexible and even curved displays, enabling innovative designs for smartphones, TVs, and wearable devices. Energy Efficiency: OLED panels consume less power than LCDs since they only illuminate the pixels that are needed. This can lead to better battery life in devices like smartphones and laptops

10. DISADVANTAGES Limited Lifespan: OLED displays can suffer from burn-in, where static images cause permanent damage to the screen over time. Cost : OLED displays tend to be more expensive to manufacture than LCDs, which can result in higher prices for devices that use them. Brightness: While OLED displays can produce deep blacks, they may not be as bright as some high-end LCD displays, particularly in outdoor or brightly lit environments. Uniformity Issues: Some OLED displays may exhibit uniformity issues, such as color shifting or uneven brightness across the screen. This can be distracting, especially in large displays like TVs. unseceptibility to Water Damage: OLED displays can be more susceptible to water damage compared to

11. APPLICATIONS Major applications of OLED technology are OLED TV. Mobile phones with OLED screens. Rolltop

12. REFERENCE J . Kalinowski, Emission Mechanisms in Organic LightEmitting Diodes, Organic Electroluminescence, Taylor & Francis, Boca Raton, 2005 . J. Godlewski, M. Obarowska, Organic light emitting devices, Opto-Electronics 15/4 (2007) 179-183. M.J. Ma�achowski, J. �mija, Organic field effect transistors, Opto-Electronics Review. T. Urabe, The outstanding potential of OLED displays for TV applications, SID Society for Information Display 24/9 (2008) 14-17 . J.S. Yoo, N. Choi, Y.-Ch. Kim, I.-H. Kim, S.-Ch. Byun, S.-H. Jung, J.-M. Kim, S.-Y. Yoon, Ch.-D. Kim, I.-B. Kang, I.-J. Chung, Technological considerations for manufacturing flexible active-matrix OLED displays, Society Information Display 24/9 (2008) 26-31 M.J. Ma�achowski, J. �mija, Organic field effect transistors, Opto-Electronics Review

13. CONCLUSION Organic Light Emitting Diodes are evolving as the next generation displays. As OLED display technology matures, it will be better able to improve upon certain existing limitations of LCD including high power consumption limited viewing angles poor contrast ratios

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