Tecnologia dei Display Touchscreen
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Tecnologia dei Display Touchscreen - 1

TOUGH BOOK TOUCHSCREEN DISPLAY TECHNOLOGY YOURIN-DEPTH GUIDE

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Tecnologia dei Display Touchscreen - 2

WHAT IS… A CAPACITIVE TOUCHSCREEN? A capacitive touchscreen panel is coated with a material that stores electrical charges. When the panel is touched, a small amount of charge is drawn to the point of contact. Circuits located at each corner of the panel measure the charge and send the information to the controller for processing. Image processing controller Linearity electrode pattern Capacitive touchscreen panels must be touched with a finger, unlike resistive and surface wave panels that can be operated by either fingers or stylus. Capacitive touchscreens aren’t affected by outside...

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WHAT IS… A RESISTIVE TOUCHSCREEN? A resistive touchscreen panel is coated with a thin, metallic, electrically conductive and resistive layer. This causes a change in the electrical current which is registered as a touch event and sent to the controller for processing. Resistive touchscreen panels are generally more affordable and work well with almost every stylus-like object. They aren’t affected by outside elements such as dust or water, can even be controlled by gloved hands and are therefore the ideal companion for rugged PCs. Touchscreen controller Resistive coated glass substrate PET...

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WHAT IS… A DIGITIZER TOUCHSCREEN? Digitizer touchscreens make use of electromagnetic induction technology, where the horizontal and vertical wires of the screen operate as both transmitting and receiving coils. The tablet generates an electromagnetic signal, which is received by the stylus. The wires in the tablet then change to a receiving mode and read the signal generated by the stylus. Modern arrangements also provide pressure sensitivity and one or more switches (similar to the buttons on a mouse), with the electronics for this information present in the stylus itself, not the tablet....

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WHAT IS… A ‘TRANSFLECTIVE PLUS’™ DISPLAY? A transflective display reflects and transmits light (transflective = transmissive + reflective). Under bright illumination, the display acts mainly as a reflective display with the contrast being constant with illuminance. Only in dim and dark ambient situations will an auxiliary transmissive backlight be provided. A transflective LCD can be read over a wide range of illuminance levels, when an illuminance sensor is added for control of the backlight. In portable electronic devices the transflective mode of operation helps to save battery life,...

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WHAT IS… DUAL TOUCH? Dual touch is the combination between resistive touchscreen and digitizer technology. It enables the operator to use the GUI with fingers, as well as with a digitizer pen. The key benefit of this combination is the intuitive handling via finger and the accuracy (signature capture, hand writing recognition) of the pen providing the flexibility to choose the right display input mode on demand. PET film Top circuit layer Spacer DOT ITO conductive coating Glass or acrylic backing panel Digitizer Shielding layer Computer motherboard Touch creates contact between resistive...

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Tecnologia dei Display Touchscreen - 7

WHAT IS… MULTI-TOUCH? Multi-touch is a method of input on a touchscreen that allows two or more fingers to be used on the screen at one time. Multi-touch allow pinching and stretching gestures on the screen to control zooming. A multi-touch display is pressure sensitive, as well as gesture sensitive, which are predefined motions that are commands to perform an action, such as rotate the object on the z-axis.

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Tecnologia dei Display Touchscreen - 8

WHAT IS… IPS? In IPS (In-Plane Switching) technology the liquid crystal runs horizontally, giving it a wide viewing angle, fast response speed and a simple pixel structure. IPS panels employ pairs of electrodes at the sides of each cell, running the electric field horizontally through the material. This approach keeps the liquid crystals parallel to the front of the panel, increasing the viewing angle. IPS PANEL DESIGN Front glass Back light CONVENTIONAL Loss of contrast and colours appear washed out. IPS Virtually no change in contrast and colour.

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WHAT IS… IPSα? Transmittance Point of image quality Front view of a pixel, (red, green, blue) Fine pitch ITO (Indium Tin Oxide) • High transmittance • High contrast ratio • Wide viewing angle • High resolution • High transmittance • High contrast ratio • Wide viewing angle Black space is smaller than IPS-Pro II

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Tecnologia dei Display Touchscreen - 10

WHAT IS… ‘CIRCULUMIN’™ TECHNOLOGY? Circular polarizer film passes only horizontally polarized light RETARDANT FILM • Retardant film converts horizontal polarization to right-handed circular polarization HORIZONTAL POLARIZATION FILM • Upon reflection, right-handed polarization changes into left-handed polarization Right handed polarized • Retardant film converts left-handed polarized light to vertically polarized light Horizontal polarized Reflected left handed polarized Vertically polarized • Polarizer film rejects vertically polarized light The main effect is that sunlight is adsorbed and...

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Tecnologia dei Display Touchscreen - 11

THE TOUGHBOOK RANGE AND TOUCHSCREEN CONFIGURATION Model Input device Resistive touch Resistive touch & digitizer Resistive touch Resistive touch Display brightness IPS IPSα Dual Touch Protection film Transflective plus™ Multi-touch Standard signatures High-res drawings and signatures

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Tecnologia dei Display Touchscreen - 12

THE TOUGHBOOK RANGE AND TOUCHSCREEN CONFIGURATION Model Input device Resistive touch Resistive touch Resistive touch Display brightness Protection film IPS IPSα Dual Touch CF-53 Transflective plus™ Direct bonding Multi-touch Standard signatures High-res drawings and signatures Digitizer pen

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Tecnologia dei Display Touchscreen - 13

THE TOUGHBOOK RANGE AND TOUCHSCREEN CONFIGURATION Model Input device Resistive touch Resistive touch & digitizer Resistive touch & digitizer Display brightness IPS IPSα Dual Touch Anti-glare Protection film Transflective plus™ High-res drawings and signatures Direct bonding Multi-touch Standard signatures

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