CIKITUSI JOURNAL FOR MULTIDISCIPLINARY RESEARCH ISSN NO: 0975-6876
SMART DUAL DISPLAY DEVICE Mr. V.Anurag Rao, Dept. of Information technology
Dr. C.V. Raman University, Bilaspur
Abstract The smart dual display device, comprising a transparent OLED display unit installed in the device for displaying and reading of information in visual form, an electronic ink display unit mounted underneath the transparent OLED display unit that requires less power as compared to the transparent OLED display unit, a touch screen mounted upon the transparent OLED display unit that is used for interfacing between a user and the display units, a processing unit attached to the touch screen and display units that controls the display units according to instructions given by the user, and a switch associated with the device that switches between the display units. .
Keywords: organic light emitting diode, switches, display unit, touch screen.
1. Introduction
Various types of display units are continuously being introduced in the market like cathode ray tube, liquid crystal display, electronic readers etc. Electronic reader is generally a digital content device, such as electronic books, electronic newspaper, and electronic document display. The original electronic reader is basically designed to read out electronic documents by downloading applications on computers and smart phones, such as smart photons having big display units are capable of reading and communicate document anytime, anywhere. Conventionally, Liquid crystal display was only used in conjunction with the user interfaces as no other technology was developed. With the evolvement of technology, LED (Light emitting diode) came into picture that used low power consumption as compared to the liquid crystal displays and provided high pixel quality as well. Further development lead to the introduction of organic light emitting diode, LCD with LED backlight and many more. However, these type of display unit still consumed a lot of battery power.
2. Experiment
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The smart dual display device that consists of dual display units, that is an electronic ink and a transparent OLED display unit that minimizes the power consumption and simultaneously provides choice between colorful and paper like display.The TOLED display unit is installed in the device that presents the information in tactile form[1]. The TOLED display unit used herein is a transparent organic light emitting diode display unit (TOLED). The TOLED display units are basically made up of millions of pixels that each emits their own individual light. They only have transparent components, such as substrate, cathode and anode[1]. When OLED displays are turned on, they allows passage of light rays in both the directions. On other hand when they are turned off, then they appears 85 % transparent as their substrate. The transparent OLED display unit is preferably an upper display unit [2]-[3]. The electronic ink display unit is mounted below the TOLED display unit (i.e. transparent OLED) that allows user to view text and pictures clearly from any angle, wherein the electronic ink display unit consumes less power in comparison to the TOLED display unit[4]. The electronic ink display unit requires extremely low power consumption, and provides high resolution and no glare visibility[5]. The electronic ink display units are basically made up of tiny microcapsules that are suspended in a liquid placed within a film layer. The microcapsules are having same width as human hair[6]. They includes positively charged white particles and negatively charged black particles. The electronic ink display unit is preferably a lower display unit[7]. The touchscreen is mounted above the transparent OLED display unit that is used to interface the user with both the display units. The touch screen is two-dimensional sensing device made up of two sheets of material separated by spacers. There are generally four types of the touchscreens that are available, such as resistive, capacitive, surface acoustical wave (SAW), and infrared (IR). The resistive is generally composed of a flexible top layed made up of polythene and rigid bottom layer made up of glass separated by insulating dots, and further attached to touch screen controller. The capacitive touch screen panel is coated with a material that reserves electrical charges. They are basically designed to transfer 90% of light from the monitor. They are futher divided into two parts, such as a surface capacitive and projected capacitive technology. The infrared touch screen an array of X and Y axis is fitted with pairs of an infrared light emitting diode and photo detectors. The surface acoustical wave touch screen includes two transducers placed along X and Y axis of the monitors glass plate along with few
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reflectors. They are designed to reflect all the electrical signals which are sent from one transducer to another one. The processing unit is inter connected to the display units and touch screen that manages the real time functioning of the transparent organic light emitting diode and the electronic ink display units with the touch screen. The data storage unit is installed in the device that stores the information. The switch is associated in the device that switches between any of the display units, such as transparent light emitting diode and electronic ink display units according to the commands given by the processing unit. The battery is used for providing electrical power for the operation of the display units and touch screen with other components. The battery includes three components, such as two terminals which are made up of different chemicals (i.e. anode and cathode) and an electrolyte that separates the two terminals. The electrolyte is basically the chemical medium that allows the passage of the electric charge between the anode and cathode. The display connector is used to connect the display units and touch screen together.
3. Result and Conclusion The device is designed to help the user to use the dual display units without flipping the device while shifting from one display unit to another one. As the device includes
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both the display units on the front portion of the device which make them easy to use. The display units of the device is generally made up of two different material, such as transparent organic light emitting diode (TOLED) and electronic ink (E-ink) display units. The TOLED display units having high transparency and flexible in nature, and are lighter and thinner in weight. The electronic ink display units are having paper like readability and requires less amount of power for the operation.
Reference [1] Y. Cui, X. Xie, M. Wang, and H. Jiang, “Design of a control system for a fresh air conditioner,” in Proceedings of the 2015 27th Chinese Control and Decision Conference, CCDC 2015, 2015. [2] J. D. Amor, C. James, and V. Ahanathapillai, “Enhancing Independent Living with Wearable Devices: The Wrist Wearable Unit in the USEFIL Project,” Int. J. Integr. Care, 2013. [3] M. A. Karimi and A. Shamim, “A wearable 3D motion sensing system integrated with a Bluetooth smart phone application: A system level overview,” in Proceedings of IEEE Sensors, 2017. [4] V. Milanovic, A. Kasturi, and V. Hachtel, “High brightness MEMS mirror based head- up display (HUD) modules with wireless data streaming capability,” in MOEMS and Miniaturized Systems XIV, 2015. [5] M. T. Chen and C. M. Lin, “Development of a smart home energy saving system combining multiple smart devices,” in 2016 IEEE International Conference on Consumer Electronics-Taiwan, ICCE-TW 2016, 2016. [6] H. J.Y. et al., “Effects of smart-phone display exposure on human circadian rhythms,” Eur. Neuropsychopharmacol., 2014. [7] M. Kerndl and P. Steffan, “Intelligent radiant floor heating regulation system with wireless sensors,” in 2017 40th International Conference on Telecommunications and Signal Processing, TSP 2017, 2017.
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