Touch screen technology or a touchscreen that is currently popular in the world of gadgets into an interesting issue for me to know further, because reportedly there are a variety of technologies such as resistive touchscreen touch screen, capacitive touchscreen, and others. Touchscreen has a double function, namely as an output / viewer user interface and a command input that will be executed. Touch that we give to the screen will be translated into X and Y coordinates, then the device will execute certain commands. So, the commands that do not because we are touching an existing picture or icon on the screen.Touchscreen Characteristics1. Resistive TouchscreenResistive, as the name suggests this technology utilizing the resistance value to determine the position coordinates of the touch. The display of this type use 2 layers of metal (conductive layer and resistive layer). Above these two layers there is a scratch-resistant coating place where we touch the screen. When the screen lights up, the electric current will flow between the two layers of metal, so there was a difference of resistance at the touch region. From there, the touch coordinates are determined.Pros:Accuracy is very high until the pixel to pixel, it is very useful when used for handwriting recognition (handwriting recognition), production costs are cheaper, can be touched with a nail, the stylus pen.DeficiencyThe quality of the screen is not good when in the outdoors, need to be pressed to get the maximum touch, do not allow for multitouch features.
2. Capacitive TouchscreenCapacitive, these technologies use electrical charges differences untu determine the touch position coordinates. Unlike the resistive touchscreen, the screen on this technology uses only one layer made from indium tinoxide placed at the glass screen. When the layer is touched, there is little electrical charges on the layer it will move on to finger penyentuh. Reduction of electric charge that is calculated to determine the coordinates of each touch. Each touch will result in a reduction of electrical charge that is different depending on the position of touch.
Pros:Screen quality is good enough when outside the room, enable multitouch features, quite responsive because with a little touch can only respond to commands.Disadvantages:The production cost is quite expensive, limited accuracy in a matter of a few pixels.
3. Surface Acoustic Wave TouchscreenWell, if that was me not so familiar. But according to the reference that he does read this technology uses a transducer to receive and transmit electrical signals. This technology also has a reflector to deflect waves sent by the transducer to the other transducer.
Have you ever heard of the TFT, AMOLED?
1.TFTThin Film Transistor, transistor pair to adjust each pixel LCD. These screens require a backlight so that usually looks thicker. TFT LCD type requires a lot of energy and the price is relatively more expensive. Also called normal TFT Active Matrix. TFT has the advantage in image quality and faster response.2.AMOLED
Active Matrix OLED, a display technology that is more energy efficient, thinner, more flexible, and also has sharp colors and contrast better than the TFT screen. This screen does not require a backlight due to the self iluminated pixels, so this type of screen is usually thinner than the TFT screen. The advantages of this AMOLED is lighting more evenly, and produces a whiter white light, also produces a more brilliant color than fluorescent backlight.
2. Capacitive TouchscreenCapacitive, these technologies use electrical charges differences untu determine the touch position coordinates. Unlike the resistive touchscreen, the screen on this technology uses only one layer made from indium tinoxide placed at the glass screen. When the layer is touched, there is little electrical charges on the layer it will move on to finger penyentuh. Reduction of electric charge that is calculated to determine the coordinates of each touch. Each touch will result in a reduction of electrical charge that is different depending on the position of touch.
Pros:Screen quality is good enough when outside the room, enable multitouch features, quite responsive because with a little touch can only respond to commands.Disadvantages:The production cost is quite expensive, limited accuracy in a matter of a few pixels.
3. Surface Acoustic Wave TouchscreenWell, if that was me not so familiar. But according to the reference that he does read this technology uses a transducer to receive and transmit electrical signals. This technology also has a reflector to deflect waves sent by the transducer to the other transducer.
Have you ever heard of the TFT, AMOLED?
1.TFTThin Film Transistor, transistor pair to adjust each pixel LCD. These screens require a backlight so that usually looks thicker. TFT LCD type requires a lot of energy and the price is relatively more expensive. Also called normal TFT Active Matrix. TFT has the advantage in image quality and faster response.2.AMOLED
Active Matrix OLED, a display technology that is more energy efficient, thinner, more flexible, and also has sharp colors and contrast better than the TFT screen. This screen does not require a backlight due to the self iluminated pixels, so this type of screen is usually thinner than the TFT screen. The advantages of this AMOLED is lighting more evenly, and produces a whiter white light, also produces a more brilliant color than fluorescent backlight.
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