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light clean
lamp
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Along with photoelectron industry's
relentless development, clean craft is necessary in photoelectric
product, clean to product's affect more and more important in quality,
precision, appearance . At present extensive use clean method is ultraviolet
(UV) light clean,on one hand it can avoid pollution because of use
organic solvent , meanwhile can abbreviate clean process
ultraviolet light clean's principle of operation£º
light clean technology is take advantage of indamine light quick oxidization
reach wipe off organic material what adhere at material surface, through
light clean posterior material surface can reach" atom's clear
rate ".Much elaborate: UV lamp house shoot wavelength for 185nm
and 254nm light wave, possess very high energy, as photon's effects
go cover clean object surface, because most hydrocarbons to 185nm
wave ultraviolet light possess strong absorb ability, and at absorb
185nm waves ultraviolet light energy analyse become ion , dissociate
form's atom, incur stimulate molecule and neutron, this exactly call
light quick effect. Oxygen's molecule at absorb 185nm wave ultraviolet
light can bring forth ozone and atom oxygen in air. Ozone to 254nm
waves ultraviolet light possess strong absorb effect too, ozone analyse
for atom's oxygen and oxygen. In it atom's oxygen is pole vivid, under
its effect, object surface carbon and hydrocarbon's analyse thing
can melt synthesize evaporable gas, Carbon dioxide and vapor ease
come out surface, thus thorough clear adhere at object surface carbon
and organic pollutant. When cleaning, make base board wet upward.
Glass base board is as trolley style transmission, above device low-pressure
mercury lamp bring forth ultraviolet ray irradiation. Glass base board
cumulate ultra-violet energy more, its surface water contact more
little, become inverse relation. Ordinary in STN- LCD fabricate process,
require glass base board cumulate ultra-violet energy for 300nj/ cm2
(253.7nm) above. But in color STN- LCD and color sieve light piece
fabricate process, request glass base board cumulate ultra-violet
energy for 600nj/ cm2 (253.7nm) .At TFT- LCD fabricate process, besides
low-pressure mercury lamp bring forth ozone clean glass, at present
the trend is, use Excimer Lamp, its 172nm wavelength ultraviolet rays
high reaction nature to glass clean efficiency much good.
light clean feature£º
A kind of digs out style,in the air proceed and after clean unnecessarily
proceeding dryness.
Can thorough clear off object's superficial carbon and organic pollutant.
Have not solvent volatilize and disuse solvent dispose problem.
Ensure product high reliability and high yield.
Product's surface clean dispose equality degree unanimously.
Because light clean is by light quick, oxidizing reaction wipe off
object's superficial carbon and indamine, so easy take place oxidize
surface should not use light clean means, only fitting to surface
dirt washing, unwell to dirt quantity many, inorganic dirt washing.
light clean technology's range of application£º
Chief at liquid crystal display, semiconductor's silicon chip, integrated
circuit, high accuracy print circuit board, optics' apparatus, quartz
crystal, seal technology, bring oxidize metal material adopt light
clean means more fit in membranous production process. Chief material:
ITO glass, optical glass, chromium board, cover membrane board, polishing
quartz crystal, silicon chip and oxidize membranous metal proceed
accurate clean disposal. Can wipe off dirt: Organically dirt, human
body's skin, cosmetic's grease, colophony's additive and forgather
acyl inferior amine, olefin, rosin, lubricant oil, leftover light
carve glue. This UV lamp house at LCD craft possess UV change quality
feagure(ultraviolet light surface qualitative change), at present
in liquid crystal display STN production process , main use dispose
technically at membrane, towards ameliorate dense meet is more effective
between membrane, like ITO membrane and sensitization glue tunic,
TOP coat and PI coat and so on. Another it can be used for UV change
feature plastic material product at research department, be used for
Nano technology's research, product by UV light irradiate take place
chemical reaction, make product surface nature change. In STN- LCD,
color sieve light piece of and OLED fabricate process, some equipment
worthiness' echoing what others have said, difference consist in manufacturing
engineering's request. Along with line subtle melt and product color
than, LCD industry to manufacturing engineering request constantly
promotion too, but have" the labor wants the friendly its matter,
must first benefit its "requirement, so nothing but equipment
ability constantly essence enter, can enhance product quality and
efficiency. |
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