A precise control of LCD cell gap containing liquid crystal is critical to achieving the best display performance. Spherical particles used to control the thickness of the liquid crystal layer must meet stringent requirements such as precise particle size, tight particle size distribution, suitable hardness, and excellent resistance against heat, cold and chemicals.

Nano-Micro provides a wide selection of both plastic and silica spacer. Silica spacer is widely used for frame gap control, as well as cell gap control for special applications.
● Uniform sphere and smooth surface
● Accurate particle size control
● Narrow particle size distribution
● Excellent resistance against heat, cold and chemicals
● Good dispersity and no aggregation
● Excellent mechanical strength and superior crush resistance
● Free from contaminations

Typical characteristics of NM SILICA Spacer：

Precise Particle Size Control of NM SILICA SPACER：

Impurity Control of NM SILICA SPACER：
The amounts of ions in silica spacer are critical and tightly controlled in the entire manufacture processing. The amount of Fe, Ca, K, Na is detected by ICP spectrometer and Cl by ion chromatography.

NM SILICA SPACER Meets RoHS Requirements：

NM SILICA SPACER do not contain any chemicals prohibited by RoHS. NM SILICA SPACER is inspected yearly by an internationally certified agent to meet all RoHS requirements. The RoHS certification of NM SILICA SPACER is current and valid, a copy of which can be sent upon request.

Type and Size of NM SILICA SPACER:
Nano-Micro provides two series (Si and SiS) of high quality SILICA spacers to meet various demanding application requirements for different customers. NM Si series silica spacer is widely used as side spacer, while NM SiS series spacer is applied in cell for special applications.
NM SILICA SPACER provides a broadest size selection from 2 µm to 20 µm. Our state-of-the-art manufacture facilities, advanced analytical instruments and reliable quality control system guarantee the quality and reproducibility of NM SILICA SPACER products.

General rules： NM Si XXX；NM SiS XXX；NM - Nanomicro XXX - diameter, for example: 065 – 6.5 µm, 100 - 10.0 µm

l Standard products are: 2.0-5.0 µm in 0.25 µm increments; 5.0-10.7 µm in 0.10 µm increments; above 11.0 µm in 1.0 µm increment.
l Spacer of special size, below 2.0 µm or above 20.0 µm, is available upon request.
l Mean diameter of spacer is consistent from lot-to-lot according to Beckman Coulter Counter Multisizer 3.
Recommended Spraying Methods of NM SILICA SPACER：
When NM Si SILICA SPAER is used as side spacer, mix it directly with other ingredients. In case of cell gap applications, NM SiS SILICA SPACER can be either dry or wet sprayed.
Dry Spray ： For best results, it is recommended to vacuum dry NM SILICA SPACER at 80 °C for 8 hrs (caps off) before dry spraying, which ensures SPACER disperse smoothly and freely.
Wet Spray: Disperse NM SILICA SPACER in organic solvent such as isopropanol or ethanol, ultrasonicate a while before adding proper amount of water. This usually works better than dispersing SPACER directly in aqueous solution containing of organic solvent.
Recommended spraying density:

Spraying density and applied pressure should be adjusted according to SPACER size etc.. Service technicians from Nanomicro Technology Company are professionally trained to help our customers to achieve best results.

Packaging and Storage of NM SILICA SPACER

NM SILICA SPACER is packaged in 10 g or 20 g glass vials with plastic caps and inserts to keep moisture away from the contents. The label on the vial includes product name, lot number, expiration date, weight, RoHS, inspection passing stamp, etc.
NM SILICA SPACER vials should be stored in dehumidifying cabinets with controlled temperature and humidity. The cabinet should be set at room temperature and kept under 25% humidity. It is recommended to use up the entire product in a vial once it is opened.