4-wire
Categories:Touch screen
product number: touch01
product name: 4-wire
4 Wire Touch Screen Working Principle:
Touch screen has two-layer structure, i.e. the top layer, ITO film and the bottom layer, ITO glass or film. They are use PET film and glass as substrate material respectively, and then the ITO (Indium Tin Oxide) is coated on the film and glass surface. The non-conductive surface of the film is treated with hard coating to prevent scratch. The ITO film and ITO glass are separated by printed very small transparent insulation spacers (<1/1000 inch). When operating, each conductive layer is given uniformly a voltage by controller: usually X direction is on the ITO film, Y direction on the ITO glass or film. When screen is touched, both conductive layers of the top film and bottom glass make an electrical contact. The controller will get the X and Y coordination by calculating the voltage of the touching point.  

Technical Specifications：
Item
Project
Specification
Input
 
Finger, Gloved Finger, Stylus
Material
ITO Glass Thickness
0.7; 1.1; 1.8; 2.0; 3.0mm
ITO Film Thickness
0.188mm
Operation and storage temperature
Operation Temperature
-20°C ~ 60°C
Storage Temperature
-20°C ~ 70°C
Electrical
Operating Voltage
5V
Linearity
< 1.5%
X, Y Resistance
Operation Current
5mA ~ 25mA
Insulation Impedance
>20MΩ (DC25V)
Resolution
4096*4096
Mechanical
Operating Force
15-70g
Surface Hardness
3H
Life Expectance
>1,000,000
Optical
Light Transmission
>80%

Standard Size:
Part Number
Size
Dimension (mm)
Viewable Area
Active Area
KTS-2.8 -4R
2.8"
70.000x55.000 mm / 2.76"x2.17"
59.600x46.100 mm /2.35"x1.81"
58.000x44.000 mm /2.28"x1.73"
KTS -3.8 -4R
3.8"
89.400x69.400 mm / 3.52"x2.73"
80.900x60.980 mm / 3.19"x2.40"
79.900x59.980 mm / 3.15"x2.36"
KTS -4.2 -4R
4.2"
94.800x69.600 mm / 3.73"x2.74"
88.800x61.600 mm / 3.50"x2.43"
86.800x59.600 mm / 3.42"x2.35"
KTS -4.7 -4R
4.7"
110.74x089.41 mm / 4.36"x3.52"
101.09x76.960 mm / 3.98"x3.03"
98.09x73.9600 mm / 3.86"x2.91"
KTS -5.8 -4R-1
5.8"
138.00x108.00 mm / 5.43"x4.25"
118.00x89.000 mm / 4.65"x3.50"
116.00x87.000 mm / 4.57"x3.43"
KTS -5.8 -4R-2
5.8"
138.00x108.00 mm / 5.43"x4.25"
118.00x89.000 mm / 4.65"x3.50"
116.00x87.000 mm / 4.57"x3.43"
KTS -5.8-4R-3
5.8"
141.00x104.70 mm / 5.56"x4.12"
122.00x93.850 mm / 4.80"x3.69"
115.17x86.370 mm / 4.53"x3.40"
KTS -6.5 -4R
6.5"
156.00x120.00 mm / 6.14"x4.72"
136.00x100.00 mm / 5.35"x3.94"
134.000x98.00 mm / 5.28"x3.86"
KTS -7.4 -4R
7.4"
171.90x127.40 mm / 6.77"x5.01"
148.90x112.40 mm / 5.86"x4.43"
145.90x109.40 mm / 5.74"x4.31"
KTS -8.4 -4R-1
8.4"
208.00x152.00 mm / 8.19"x5.98"
176.00x133.00 mm / 6.93"x5.24"
171.00x128.00 mm / 6.73"x5.04"
KTS -8.4 -4R-2
8.4"
188.98x141.73 mm / 7.44"x5.58"
173.98x131.32 mm / 6.85"x5.17"
172.21x129.54 mm / 6.78"x5.10"
KTS -9.4 -4R
9.4"
234.00x174.00 mm / 9.21"x6.85"
211.00x158.00 mm / 8.31"x6.22"
196.00x148.00 mm / 7.72"x5.83"
KTS -10.4 -4R
10.4"
237.00x180.00 mm / 9.33"x7.09"
216.20x163.40 mm / 8.51"x6.43"
212.00x159.40 mm / 8.35"x6.28"
KTS -12.1 -4R
12.1"
271.00x205.00 mm /10.67"x8.07"
253.00x191.00 mm / 9.96"x7.52"
248.00x186.00 mm / 9.76"x7.32"
KTS -15 -4R-1
15"
330.00x255.00 mm /13.00"x10.04"
310.00x235.00 mm / 12.20"x9.25"
303.00x227.00 mm / 11.93"x8.94"
KTS -15 -4R-2
15"
320.00x243.00 mm / 12.60"x9.57"
300.00x228.00 mm / 11.81"x8.98"
285.00x216.00 mm / 11.22"x8.50"
KTS -15 -4R-3
15"
311.00x254.00 mm /12.24"x10.00"
293.00x233.00 mm / 11.54"x9.17"
284.00x224.00 mm / 11.18"x8.82"
KTS -17 -4R-1
17"
362.00x278.00 mm /14.25"x10.94"
340.00x260.00 mm / 13.39"x10.24"
320.00x238.00 mm / 12.60"x9.37"
KTS -17 -4R-2
17"
366.00x294.50 mm /14.40"x11.60"
342.00x274.50 mm / 13.46"x10.81"
334.00x266.50 mm / 13.15"x10.49"
KTS -17-4R-3
17"
358.50x296.50 mm /14.11"x11.68"
341.90x274.40 mm / 13.46"x10.80"
337.92x270.34 mm / 13.30"x10.64"
KTS -17-4R-4
17"
360.50x290.00 mm /14.19"x11.41"
343.00x268.00 mm / 13.50"x10.55"
332.00x257.00 mm / 13.07"x10.12"
KTS -18.1- 4R
18.1"
388.00x313.00 mm /15.28"x12.32"
363.00x291.00 mm / 14.29"x11.46"
357.00x285.00 mm / 10.06"x11.22"
KTS -19- 4R
19"
395.00x300.00 mm /15.56"x11.81"
375.00x284.60 mm / 14.76"x11.20"
360.00x269.60 mm / 14.17"x10.61"
KTS -21- 4R
21"
438.00x331.00 mm /17.24"x13.03"
416.60x315.00 mm / 16.40"x12.40"
402.60x301.60 mm / 15.85"x11.87"