ITO coated glass

Touch panel and ITO-coated glass

Touch panel is no longer a new term. It can be used in many fields such as mobile phones, wearable devices, smart homes, and other electronic consumer products. When it comes to touch panels, we cannot fail to mention the material ITO conductive glass. Today we need to discuss the relationship between ITO coated glass and touch panels.


ITO coated glass


About ITO-coated glass

Chemically, ITO glass is the abbreviation of Indium Tin Oxide Glass, which is tin-doped indium oxide. ITO conductive glass is based on mid-aluminum and is coated with a thin film of indium tin oxide (commonly known as ITO) using magnetron sputtering technology.

The main component of the ITO film layer is indium tin oxide. Indium oxide has high light transmittance, and tin oxide has strong electrical conductivity. Because ITO coated glass has strong water absorption, it will absorb moisture and carbon dioxide in the air, causing chemical reactions to cause deterioration, commonly known as “mildew”.

Therefore, care must be taken when storing moisture proof. It is a transparent conductor commonly used in transparent electrodes for liquid crystal displays (LCD), plasma displays (PDP), electroluminescent displays (EL/OLED), and touch panels .

ITO coated glass

As the temperature increases, the resistance also increases. According to resistance, ITO conductive glass is divided into high-resistance glass (resistance between 150 and 500 ohms), ordinary glass (resistance between 60 and 150 ohms), and low-resistance glass (resistance less than 60 ohms). High-resistance glass is generally used for electrostatic protection and touch panel production; ordinary glass is generally used for TN LCDs and electronic anti-interference; low-resistance glass is generally used for STN LCDs and transparent circuit boards. The ITO conductive glass specially used for LCDs is also coated with a silicon dioxide barrier layer before coating the ITO layer to prevent sodium ions on the substrate glass from diffusing into the liquid crystal in the box. For ITO coated glass dedicated to high-end LCDs, the substrate glass must be polished before sputtering the ITO layer to obtain more uniform display control. The ITO coated glass substrate used in LCD displays is generally super float glass, and all coating surfaces are the floating tin surfaces of the glass.
Touchthin’s indium tin oxide glass is coated on medium alumina glass. The first layer is silicon dioxide, and the second layer is indium tin oxide film. It adopts double-sided coating and double-sided shadow elimination technology, which can meet the higher needs of customers.


About touch panel

A touch panel is an inductive LED display, LCD, flat screen, or electronic ink device that can receive input signals such as contact (including fingers or pen tips). ITO conductive glass is part of CTP. It is the top layer of glass on the mobile phone (usually 1 to 3 layers are pasted together). It is connected to the touch IC through FPC, and finally connected to the touch IC. It is connected to the motherboard through FPC.
When the graphic buttons on the screen are touched, the tactile feedback system on the screen can drive various link devices according to pre-programmed programs, which can replace the mechanical button panel and produce vivid audio and video effects through the display. touch panels have a wide range of applications, from common cash machines and PDAs to industrial touch computers. The touch panel generates a signal simply by touching it, without pressure. Touch panels will last longer because the components in a capacitive touch panel do not require any movement.


ITO coated glass

The connection between the touch panel and ITO conductive glass

ITO sensor: It is a component of the touch panel; indium tin oxide glass, a transparent conductive material; ITO is coated on glass or film according to a specific pattern, and then attached to a thick layer of protective glass to become an ITO sensor .
Existing touch panels and ITO designs that can support multi-point operations are all double-sided or double-layer ITO coated glass structures. More specifically, they need to support multi-point operations of two or more points. The existing technology needs to adopt double-sided single-layer or double-layer indium tin oxide glass. It is a single-sided double-layer ITO structure. Double-sided single layer means coating a layer of conductive material on the front and back sides of the glass or film; single-sided double layer means coating two layers of conductive material on one side of the glass or film, with insulation in the middle. Separated by objects, such an ITO TP has a complex structural design, complex process, and high cost.
If you need touch panel or ITO conductive glass, we will try our best to provide you with our best service and best products. You can contact us through  or send an email.

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