Nano-Micro has developed black microspheres based on a proprietary composite of silica and polymer.  These composite microspheres are intensely black and darker than other similar products on the market.  Employed as a spacer in liquid crystal displays (LCD), the black microspheres not only control the thickness of the liquid crystal layer but also prevent leakage of light through the microspheres to improve the contrast of the LCD panel.  When immersed or dispersed in a medium for the application, the dark color does not fade or leach out of the microspheres.  Current production of the black spacer centers around mainstream sizes of 4.0 and 6.0 µm.  When placing an order of the product of other particle sizes, a lead time should be considered. 

Characteristics

uUniform in size and shape, coefficient of variation (CV) ≤ 3.5%

uGood dispersity, no overlaps or aggregates

uHigh purity, no leachables, compliance with RoHS regulations

uGood mechanical strength

uExceptional stability toward chemicals and resistance to heat and cold l

Physical properties

 

Specific gravity，g / cm3	1.8
Decomposition temperature, °C air	> 300
Refractive index (Sodium D line)	2.42

 

Product	Type	Diameter	CV	K at 10% deformation*	Application
		µm		Kgf / mm2
BK	NM BK	2.0 –10.0	≤  3.5%	≥ 2000	HTN, STN, FSTN

* The K value at 10% deformation is defined by the following equation:

wherein F and S represent a load value (kgf) and a compression displacement (mm) at 10% compression deformation of the particle, respectively, and R represents a radius (mm) of the particle.

Nano-Micro Tech is devoted to developing a world-leading technology for making the highest quality and the largest selection of uniformly sized nano- and microparticles. The company is capable of supplying monodisperse particles of any size in the range from 5 nanometers to 1000 microns. Current products include high performance chromatographic media and columns, solid phase extraction (SPE) sorbents, metal scavenger resins, LCD spacer, particle size standards, enzyme support, drug carriers, ACF conductive particles, magnetic particles, fluorescent microspheres, light diffuser particles, cosmetic additive particles and various functional microparticles for other applications.

The company has a 3500 square meter manufacturing plant and 3000 square meter R&D lab in Suzhou Industrial Park. Microparticles from Nano-Micro Tech have already been broadly used worldwide in biopharmaceuticals, nano and microparticle calibration standards, LED, medical diagnosis, flat panel displays, enzyme catalysis, cosmetics, etc.

Nano-Micro Tech is a state certified New and High Technology Enterprise, and SGS ISO9001:2008 registered company.