ITO Coated Glass | ITO Glass Substrates

Indium tin oxide conductive glass, also known as ITO coated glass, is made by coating a layer of indium tin oxide on a soda-lime-based or silicon-boron-based substrate glass at about 300°C using magnetron sputtering. The indium tin oxide layer on the glass substrate is thin and uniform, giving it good conductivity and high transmittance. ITO glass is an N-type semiconductor material, and the chemical formula of the oxide layer on the glass surface is Sn:In2O3.

ITO Glass Classifications

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) according to resistance.

ITO conductive glass can be divided into 14”x14”, 14”x16”, 20”x24” and other specifications according to size. Also, it can be divided into 2.0mm, 1.1mm, 0.7mm, 0.55mm, 0.4mm, 0.3mm and other specifications according to thickness. Thickness below 0.5mm is mainly used for STN liquid crystal display products.

What’s more ,ITO conductive glass is divided into polished glass and ordinary glass according to flatness.

ITO Glass Size, Thick and Resistance

Size: 10 x10mm, 20 x20mm, 25 x25mm, 1” x1”inch, 50 x50mm, 25 x75mm,1” x3”inch,100x100mm, 300x300mm

Thickness : 0.2、 0.3、 0.4、0.5、0.55、0.7、0.8、0.9、1.0、1.1、1.2、1.5、1.8、2.0 、3.0mm etc.

Resistance : 3－4ohm/sq, 4－6ohm/sq, 5－7ohm/sq , 7－10ohm/sq, 10－15ohm/sq, 15－20ohm/sq, 20－30ohm/sq, 30－40ohm/sq, 40-60ohm/sq, 70-120ohm/sq or others

Applications ITO Coated Glass

ITO conductive glass is widely used in the production and research and development of electrochromic devices (such as electrochromic displays, electrochromic labels, electrochromic glass, electrochromic rearview mirrors, etc.), liquid crystal displays (including computer monitors, LCD flat-panel TVs, mobile phone monitors, household appliance monitors, etc.), OLEDs, organic solar cells (OPV), low-temperature perovskite solar cells, electrochemistry, bioelectric experiments, touch screens, electrostatic protection, electronic anti-interference, transparent circuit boards, and other fields.

Advantages of ITO Glass

·   Support Customized ITO sheet resistivity

·   Conductive and optically transparent coatings

·   Low specific resistance,Low electrical resistance

·   High environmental and temperature stability

·   Excellent conductivity and optical transparency

·   Coating uniformity

·   Thermally and chemically stable

·   Ability to shield electromagnetic fields

·   The specified surface resistivity of the ITO coated glass sheet is in the range of 10 ohms/sq. to 100 ohms per square. 

·   The transmittance of the Indium Tin Oxide (ITO) glass coverslips at 550nm are greater than 85%. 

·   The ITO film or layer thickness is between 50nm and 200nm (i.e. 500Å – 2000Å).

Storage and Precautions for ITO glass

ITO Glass Storage Conditions:

·   When taking and placing, only touch the four sides, not the surface of the conductive glass ITO;

·   Handle with care, and do not collide with other fixtures and machines; 

·   If you want to store it for a long time, you must pay attention to moisture-proof to avoid affecting the resistance and transmittance of the glass;

·   For large-area and long-strip glass, the float direction of the glass substrate should be considered when designing and layout.

Precautions for use :

·   .ITO conductive glass should be stored at room temperature and kept dry with humidity below 65%. Of course, if you need to store ITO glass for a long time, it is recommended to keep it below 20 degrees Celsius.

·   When storing, the glass should be placed vertically (except for regulations, it is generally required to be placed vertically.

·   When placed flat, try to keep the ITO side facing down; glass with a thickness of less than 0.55mm can only be placed vertically).

·   Stacking is not allowed at any time

Clean ITO Coated Glass

Our tibbo-glass is very careful in packaging ITO glass to ensure that customers receive it clean and tidy without any damage, and customers can use it directly. However, some customers prefer to clean the glass after it arrives before using it. In order to achieve these cleaning purposes, we make the following suggestions: 

1. The uncoated side can be cleaned as normal glass;

2. The coated side is first wet (ethanol. acetone) ultrasonic cleaning, infrared drying, and then dry cleaning (ultraviolet ozone light cleaning) to improve the work function of the ITO surface.

Test ITO Glass Substrates Standards

Size:

A. Test method: Use a ruler and a vernier caliper to measure the length, width and thickness of the original glass to be tested.

B. Judgment standard: The measurement results are qualified if they are within the parameter range provided by the supplier.

Surface Resistance:

A. Test method: Take the entire area of the glass to be tested as the test area, and then divide the test area into nine equal parts and use a four-probe tester to test the surface resistance of each area.

B. Judgment standard: Calculate the average resistance value and the dispersion value of the resistance data based on the test results. The result is qualified if it is within the required range.

ITO Layer Temperature Performance

A. Test method: Heat the original glass to be tested in 3000C air for 30 minutes, and test the surface resistance value of the same point before and after heating. 

B. Judgment standard: The ITO conductive film block resistance value should not be greater than 300% of the original block resistance to be qualified.

ITO Etching Performance:

A. Test method: Put the original glass to be tested into the etching solution used in the production line to test its complete etching time.

B. Judgment standard: The complete etching time value is less than half of the time set by the production process to be qualified.