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EMI Shielding

BSI > Capabilities > EMI Shielding

OUR CAPABILITIES

Silver Coating / ITO Coating / Metal Mesh

Bi-Search International provides customized EMI shielding solutions to protect displays from electromagnetic and radio-frequency interference. Our EMI shielding solutions are designed to balance electromagnetic protection with optical clarity and display performance, based on the specific requirements of each application.

In-house precision fabrication process for high reliability and consistency

In-house precision fabrication process for high reliability and consistency

Capability to apply Silver Coating, ITO Coating, and Metal Mesh

Capability to apply Silver Coating, ITO Coating, and Metal Mesh

Support for broad frequency performance from kHz up to GHz with high optical clarity

Support for broad frequency performance from kHz up to GHz with high optical clarity

Class 1,000 / Class 10,000 Clean Room

Class 1,000 / Class 10,000 Clean Room

MultipleMultiple coating and surface treatment configurations tailored to shielding and environmental requirements

Multiple coating and surface treatment configurations tailored to shielding and environmental requirements

Dedicated in-house equipment and testing for shielding effectiveness and strict quality control

Dedicated in-house equipment and testing for shielding effectiveness and strict quality control

What is EMI Shielding?

Electromagnetic interference (EMI) can disrupt the operation of electronic devices and affect the performance of surrounding equipment. EMI shielding helps reduce electromagnetic emissions by limiting electromagnetic energy entering or escaping from a display, while also protecting internal electronic circuits from external interference.

For display applications, EMI shielding incorporates conductive materials into or onto the cover lens structure while maintaining transparency and visual performance. These conductive layers help block or attenuate electromagnetic energy, reducing EMI transmission through the display.

Silver Coating

Silver coating provides high electrical conductivity and effective electromagnetic shielding performance for EMI shielding glass. BSI’s upgraded silver coating technology enhances surface oxidation resistance while maintaining high transmittance and excellent viewing angles.

Transmittance: ≥ 85%

Shielding Effectiveness: -26.5dB

Frequency Range: 300 MHz – 1.5 GHz

Silver Conductive Coating Film Layer Structure
ITO Film Layer Structure Diagram ITO Film and Sputtering Target

ITO (Indium Tin Oxide) Coating

ITO coating is a widely used EMI shielding method, applying a thin, lightweight, and electrically conductive coating to glass or film substrates. It offers high optical transparency and visibility while providing effective EMI shielding. ITO-coated glass and film can also be customized through cutting, punching, and adhesive tape applications for specific EMI shielding and display requirements.

Transmittance: 76%

Shielding Effectiveness: Up to 30 dB

Frequency Range: 100 MHz to several GHz

ITO Sputtering Targets (Raw Materials): High-purity (99.9%∼99.99%) oxide ceramic source materials used for depositing transparent conductive films.

Diameter Spec: Min. 0.5" to Max. 18"

Metal Mesh

Metal mesh uses a highly conductive copper grid with low sheet resistance to provide effective EMI shielding performance across a broad frequency range. The ultra-fine copper mesh is treated to enhance oxidation resistance while maintaining high optical transparency.

Transmittance: ≥ 75%

Shielding Effectiveness: Up to 100+ dB (9400 Film ), Up to 63 dB (MT85)

Frequency Range: 10 MHz to 4 GHz

Metal Mesh Film Layer Structure Diagram

Benefits of
EMI Shielding

EMI/RFI shielding reduces electromagnetic emissions from displays while protecting internal electronic circuits from external electromagnetic interference. This helps minimize interference between the display and surrounding electronic equipment.

EMI shielding protects sensitive display components, sensors, and electronic circuits from electromagnetic interference that can cause signal disruption, operational errors, or malfunctions.

EMI shielding glass is designed to provide effective electromagnetic shielding while maintaining high transmittance, optical clarity, and display visibility, making it well suited for display applications

EMI shielding glass can be customized with different shielding materials, structures, sizes, and processing options to meet the specific requirements of various display applications.
1

Incoming Inspection

2

Disassemble LCD Module & Remove LCD Panel

3

Cleaning LCD Panel and Cover Glass or Touch Panel

4

Optical Bonding (LCD Panel to Glass Bonding)

5

Curing Bonding Material

6

Reassemble Bonded Panel to Module

7

Outgoing Inspection

8

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