Screen Term

I confused about screen term like resistive, capacitive, surface acoustic wave, TFT, Oled, Amoled, Super Amoled, and Retina Display. But the handphone producer seem not interested to explain about that term and leave me confused. So i search in internet and found out that actually simple and easy to explain. Okay lets me try explain it from what i find out in internet and it’s differentiate from touch screen and display. So, about touch screen is following:

First, Resistive is touch screen using resistant different to determine the coordinate of touch. This type is using 2 layer metal which is one layer is conductor of electricity and the other is resistor of electricity, so when we press two layer is become connected and change the resistance and then it reported as coordinate of touch. So, it is depend on pressure which is affected this type is accurate, resistance to dust and liquid but it is not resistance to sharp object, have transparency just 75% and not supported multi touch.

Second, Capacitive is touch screen using capacitance different to determine the coordinate of touch. This type is using 1 layer of electricity, so when we touch the layer is transferred the electricity and lose some electric charge, then it calculate in circuit in edge and reported as coordinate of touch. So, it is depend on electric charge which is affected this type is resistance to sharp object, have transparency 90%, and supported multi touch but it is not accurate and not resistance to dust and liquid.

Third, Surface Acoustic Wave is touch screen using disturbed wave signal to determine the coordinate of touch. This type is using two type of transducers which function transmitting and receiving wave, and reflector to diverting the wave from transmitting and receiving transducers, so when we touch the screen than wave absorbed, then the disturbed wave received in transducers reported as coordinate of touch. So, it is depend on wave signal which is affected this type have superior clarity, and resolution than two type before, also it’s supported multi touch but it is less resistance to dust and liquid with resistive but more resistance to dust and liquid with capacitive.

And then about display is following:
First, TFT is active matrix display technology using back light, which is have better picture quality and better response time but needed high energy.

Second, Oled is passive matrix display using self illuminate pixel, which is have less energy, more bright and contrast but worsen response time, ghosting effect, and performance will degraded overtime.

Third, Amoled is hybrid display technology using Active Matrix and OLED, which is improve response time from Oled and reduce ghosting effect.

Fourth, Super Amoled is version of Amoled display that integrated the capacitive with display, which is less power, less reflected light, and work better in outdoor than Amoled.

Fifth, Retina Display is version of TFT that integrated display and touch screen so eliminate the empty space, high density pixel, and high contrast ratio for phone, which is have super-sharp display than other display technology.

So, i hope you not confused again about screen term like me. Although source of this information can be found which one the first post and summarized from many source but i really thank you for people that try to explain about what this is about. Thank.

source: various source

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