![]() ![]() Their main purpose is for cameras when they were first invented but now they are used in displays also. They were first developed in 1929 by Edwin H. They are very good at lining up light and giving smooth results. Polarizers are basically a very small grid that is used for cameras and displays. So only vertical light can go through vertical polarizers and vice versa for horizontal polarizers. Polarizers work by only allowing light that is moving the same way that it is made. You can find Liquid crystal in Liquid Crystal Displays or LCDs. Another reason it is used in displays is because it requires less power to run than a CRT. It is allowed to be thinner because instead of projecting light onto the screen it just organizes light that is already there. The reason that liquid crystal is used in displays is because it allows the monitor to be thinner compared to CRTs (those big bulky “old school” tvs). The first time liquid crystal was used in displays was in 1962. It was first discovered in 1888 by Friedrich Reinitzer. It is good for displays because in the liquid crystal state light gets organized from the liquid crystal and prints out a very crisp looking picture. It allows light to pass through when it needs to and when it doesn’t it blocks the light. ![]() Liquid crystal is a state of matter that has a crystal-like molecular structure. So it’s not really my life that they are directly affecting, it’s our world as a whole that is impacted by it. Everywhere you go now you can probably find a screen or monitor of some type. LCDs haven’t specifically changed how I live it’s more of a general usage of monitors/displays. I chose to do research on monitors (or well in this case LCDs) because in the modern world you can hardly find a building that doesn’t have a single display of some kind inside so I thought it would be interesting to find out how they work. ![]() The reason CRTs needed to be replaced was because they are those bulky tube tvs that take up an enormous amount of room. A LCD is a monitor that was made to replace the CRT (Cathode Ray Tube). Finally, process parameters are obtained for optimized performance of the thin film transistors.Well after starting the research for monitors I realized that I needed to focus on one single type of monitor and the one I chose was LCD monitors. The dielectric constant increases with increasing Si–H bond density for the HDR thin films, because the high plasma power density ( > 38.5 W ∕ cm 2 ) could break more Si–N bonds. The Si–N bond density and the Si and N dangling bonds enhance the dielectric constant, but the Si–H and N–H bond densities have different effects. The N radical density increases with increasing N–H and Si–N bond densities and decreasing Si–H bond density. The optical band gap ( E 04 ) could be tuned by the N radical density. The Si–H, N–H, and Si–N bond densities are important parameters affecting the physical/optical properties of low deposition rate thin film (the thin films in the proximity of a - Si N x : H ∕ a - Si interface) and high deposition rate (HDR) thin film (bottom gate insulator thin films). They find that the plasma power density and chamber pressure play minor roles compared to the gas flow rate of Si H 4, and the role of the electrode spacing is indistinctive. ![]() The Si–H and N–H bond densities are affected by the processing parameters. In this study the authors determine the structural properties of a - Si N x : H thin films with Fourier transform infrared measurement and relate these to both the processing parameters and their physical/optical properties. The hydrogenated amorphous silicon nitride ( a - Si N x : H ) thin films were produced in a radio-frequency plasma-enhanced chemical vapor deposition system using N H 3 ∕ Si H 4 ∕ N 2 mixture source gases at 330 ° C. ![]()
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