A resistive touchscreen monitor system consists of a glass LCD monitor panel that is composed of several layers. The most important are two thin metallic electrically conductive and resistive layers separated by a thin space. When a object touches the touch screen LCD panel, the layers are connected at that exact point. The change in the electric field is noted and the coordinates of that point are calculated by the computer, much the same as a mouse driver translates a mouse click or drag.
A resistive LCD touch display is generally the most affordable technology but only offers about 70-75% clarity (vs. 90% for capacitive), and the outer layer can be damaged with sharp objects. Resistive touch screen monitors are not affected by outside elements such as dust or water; they are the most common type used today. They can be activated with a stylus, gloved finger, etc.
In a capacitivetouch LCD panel, the LCD monitor panel is coated with a layer of indium tin oxide, which conducts a continuous electrical charge across the surface. When a user's finger touches the surface, the charge on the capacitive layer decreases. This decrease is measured in circuits located at each corner of the monitor. The computer calculates exactly where the touch event took place and then relays that information to the touch screen driver software. Its primary advantage is that it transmits 90% of the light from the LCD monitor, whereas the resistive system only transmits about 75%. This gives the capacitive system a much clearer picture than resistive technology. However, a capacitive system only responds to finger contact and will not work with a gloved hand or pen stylus.
TRU-Vu Monitors also offer SAW and Infrared touch screen monitors. We also offer the new HID touchscreen monitors, eliminating the need for special drivers.
· 22" HD Surgical-Grade Display · 5-Wire Resistive Touch
· Conforms to UL 60601-1 · HD Resolution: 1680 x 1050 · Contrast Ratio: 1,000:1 · Brightness: 300 nits · Aspect Ratio: 16:9 · Video Inputs: VGA, DVI (others upon request)
· 22" HD 5-Wire Resistive Touch Screen Monitor · HD Resolution: 1680 x 1050 · Aspect Ratio: 16:10 · Contrast Ratio: 1,000:1 · Brightness: 300 nits · Viewing Angle: 170º (H) x
160º (V) · 12 VDC/90-240 VAC · Video Inputs: VGA, DVI, HDMI
VMTRH-22C
· 22" HD 5-Wire Resistive Touch Screen Monitor · HID Compliant · HD Resolution: 1680 x 1050 · Aspect Ratio: 16:10
· Contrast Ratio: 1000:1 · Brightness: 300 nits · Viewing Angle: 178º (H) x
178º (V) · 12 VDC/90-240 VAC · Video Inputs: VGA, DVI, DisplayPort
VMTC-26C
· 26" HD Capacitive Touch Screen Monitor · 720p HD Resolution: 1366 x 768 · RS-232 Interface · Aspect Ratio: 16:9
· Contrast Ratio: 3000:1 · Brightness: 450 nits · 24 VDC/90-240 VAC · Video Inputs: VGA, DVI
VMTC-27R
· 27" HD Capacitive Touch Screen Monitor · 1080p Full HD Resolution: 1920 x 1080 · USB Interface · Aspect Ratio: 16:9
· Contrast Ratio: 3,000:1 · Brightness: 300 nits · Viewing Angle: 178º (H) x 178º (V) · 12 VDC/90-240 VAC · Video Inputs: VGA, DVI & HDMI
VMTC-32C
· 32" HD Capacitive Touch Screen Monitor · 1080p Full HD Resolution: 1920 x 1080 · Aspect Ratio: 16:9 · Contrast Ratio: 3000:1 · Brightness: 450 nits · 24 VDC/100-250 VAC · Video Inputs: VGA, DVI
VMTIH-42C
· 42" HD IR Touch Screen Monitor · HID Compliant · 1080p Full HD Resolution: 1920 x 1080 · Aspect Ratio: 16:9 · Contrast Ratio: 5000:1 · Brightness: 500 nits · 90-240 VAC · Video Inputs: VGA, DVI (also available with HDMI)
