Eight Bit
Hardcore Member
I love pressure sensitivity
To keep things simple: Resistive touchscreens basically have two layers that will connect when you press on them. The position of this point can be determined by measuring the voltage drop between both layers, which varies with the position - both layers act as a variable voltage divider. Modern variants can even measure the pressure sensitivity and may involve some magic to recognize more than one point at the same time. The biggest advantage is that they are very precise and they'll work with everything, they just need some pressure. The required pressure varies among models, you might know some old devices that feel like you'd need a hammer to make them recognize a touch, but modern ones can be very sensitive - my Pandora's screen is so sensitive it is near impossible to touch it without causing the mouse cursor to move, even though there's still a screen protector in between.I know absolutely nothing about touchscreens
There's no such thing as an electrostatic field.I thought capacitive touchscreens were electrostatic, not electromagnetic?
If it will still work with stylus and fingers, well, I wouldn't be interested in changing. Even when multi-touch would be supported, there is a keyboard full of modifiers to hack substitutes.Let's imagine we have are pyras, a couple years pass, capacitative technology reaches new heights, while prices miraculously go lower. Hypothetically, will some willing users be able to replace the "stock" pyra resistive screen/panel with a capacitative one (saving the software-related trouble and calibration, for later)?
Said field is generated using AC, the field is constantly being charged and discharged. The finger that disturbs this system acts as some sort of capacitor, it can hold more energy that the touchscreen itself, which creates a measurable discharge current - so it's basically the other way round, your finger is being charged.OK, basically, as I understood it, it builds up a small charge in the surface of the screen, and when you touch it it discharges in the spot you touch.
It is not even a part of the screen but a separate layer glued on top of it.
Modern multi-touch capacitive touchscreens decoupled their driver and sensor layers, I'm well aware of that. Putting the driver layer behind the screen is not a technological requirement, though, more like an exploited possibility.There are screens where capacitive panel is totally integrated on screen, as backlight is for example [1]. The time where touch panel was an element and screen other is near gone in modern high smartphone devices. And that can be the normal situation in a time for near all theses devices.
The very reason for the resistive touchscreen is that a majority would not consider a capacitive screen an upgrade, it did not get a capacitive screen because people didn't want it.
Aren't you mixing this up with inductive technology?But today there are a lot of devices with capacitive screens and very high precision touch pen.
Resistive touch screen are always on top of the screen if I remember correctly.It is separated in Pyra and in old technology devices (Pyra in fact uses old-low tech, from CPU to display).
The point he was getting at is that having two layers with something isolating in between tends to not be very capable of letting light pass through undisturbed. There are little points in between them that keep the distance, they can be seen on some screens when looking closely at them.Resistive touch screen are always on top of the screen if I remember correctly.
today there are a lot of devices with capacitive screens and very high precision touch pen.
Capacitive digitizers simply cannot be as accurate as resistive with a passive stylus. Ever.
Fingers are far too blunt to be effective on a real/desktop OS/DE.
The Galaxy Note series uses an active stylus on a capacitive matrix. It is the, maybe pattented, exception.
I love pressure sensitivity
I can say for sure that those are inductive, not capacitive.That pens are not only on Galaxy Note
And you should look for inductive touchscreens. Seriously, it's an entirely different technology that is being integrated side-by-side, those active pens don't work on capacitive touchscreens.You should look for «computers with touch display and active pen» in Google to actualize your information about actual situation.