LCD Module Manufacturers on Capacitive and Resistive Touch Screens

It’s hard to overstate the revolutionary nature of touchscreens. Not long ago, cellphone users had to press buttons endlessly to carry out commands. But these days, making a call, sending a text, pulling up email and even web browsing are all done with a simple tap of finger to screen.

LCD Module

Touchscreens are perhaps the pinnacle of user experience: if you need to access or activate something, simply touch it. This intuitiveness is perhaps the reason touchscreens are now ubiquitous. You find them not just on smartphones, but also on ATMs, car dashboards and even handheld consoles.

That said, not all touchscreens are created equal. When it comes to an LCD module, two major systems are used today: resistive and capacitive touchscreens.

Resistive Touchscreens

As its name suggests, a resistive touchscreen responds whenever you apply resistance to it. This type of screen has two layers separated by a small gap, with a special coating covering the inner sides of the layers. When you press on the screen, the two layers come close together and the special coating layers touch, creating an electric voltage. The screen interprets this voltage as an input and produces a corresponding response.

Capacitive Touchscreens

Capacitive touchscreens, on the other hand, operate on a radically different premise. If you remember high school biology, you probably know that the body produces minute amounts of electricity. A touch screen LCD display module using capacitive technology takes full advantage of this fact.

The screen is made with insulating layers (usually glass), coated with a conductive material. When your finger touches the screen, it creates changes in the screen’s electrical field. These changes are interpreted by the screen as inputs.

So, Which is Better?

Resistive touchscreens are most common, and they do pose certain advantages. You can use just about any tool aside from your finger to input commands on the screen; as long as you’re applying sufficient force, your input will register. However, there is a major downside. Since they use multiple screen layers, they tend to produce lower visual fidelity.

Capacitive screens, on the other hand, require only one layer, which is why they usually produce crisper images. Of course, you don’t need a stylus to make inputs. Your finger is the best stylus for these. Furthermore, such screens allow you to perform multi-finger gestures, such as pinching out to zoom into images.

Sources:
Resistive vs Capacitive Touchscreens, thetechgears.com
Resistive vs Capacitive Touchscreen, techexplainer.wordpress.com