Capacitive glass touch screen technology is becoming more popular and growing in the commercial and industrial markets. Basically, capacitive technology is divided into two parts that are surface capacitive and projected capacitive respectively. Surface capacitive currently has limited demand and is mostly used for factory and ATM devices. Projected capacitive technology is developed mainly for smartphones, but the demand for capacitive touch screen displays are increasing daily.
Exploring the flexibility provided by capacitive touch glass
Projected capacitive technology is one of the best touch sensing methods that is used to provide human interfaces to machine controls. The process basically utilizes the flow of electric current that flows from finger to the targeted machine and activates capacitive coupling between finger and switch in the touch screen monitor or the touch screen desktop system. These capacitive sensors are considered as non-contact devices that have the capabilities to provide high-resolution measurements and to change any conductive target’s position.
What makes glass capacitive panels so useful in commercial applications?
Faytech North America uses a variety of front surface materials to create the complete control panel solutions. Tempered glass is one of the best example. Glass has various advantages or benefits and you can also print on its rear surface to get almost indestructible graphics. When combined together with capacitive sensors, a glass panel provides very attractive and well functional human interface device when placed in a capacitive display. The glass fronted glass panels that use to incorporate projected capacitors are not having any moving parts, are very easy to clean, chemical resistant etc.
- Industrial controls
- Medical consoles
- Gaming consoles
- Sale system points
- Handheld devices
This projected capacitive technology is one of the best touch sensing method available and used to serve effective human interface to machine controls. The features of capacitive glass incorporating projected capacitive sensors are as follows:
- No moving parts
- Easy to clean
- Tempering can be done to improve strength
- Excellent for outdoor uses
- Great to use with gloves or bare hands
- Easily usable with scratched and cracked glass
Faytech North America offers wide range of controlling technologies utilizing capacitive control sensors and solutions.
How does the capacitive glass solution work?
The base of the glass sheet has transparent conductive coating and another side of the glass is coated with glass protective coating. All the four corners of the glass have electrodes and an electric supply with similar voltage is applied to all these four corners. Due to this a uniform electric field is produced over the panel. Whenever any finger touches the panel, electric current from all the four corners starts flowing through the finger. The ratio of electric current flowing through all these four corners is measured so that touch point can be detected appropriately. The measured value of this electric current is inversely proportional to distance between the four corners and detected touch point.
- Suitable for large size monitors
- Respond to even light touches and their is no requirement of pressure force for detection
- High visibility as there is just one glass layer
- Structurally very tough
- Moist, dust and grease resistant
- Highly responsive and high resolutions
- Minimum parallax
- Detect touches only by fingers and don’t detect with gloves or bare fingers.
- Don’t support multi-touch
- Can be affected by noises, but recently noise tolerance is improved by using several methods including noise shielding.
Faytech North America is one of the leading manufacturers of capacitive and resistive technologies. Ranging from all-in-one industrial computer systems to high brightness monitors and sunlight readable displays, we offer the best display solutions in the industry. Contact us today to speak with one of our experts regarding the specific needs and requirements in your industry.