CN108181244A - A kind of method for measuring TFT-LCD liquid crystal substrate glass batch uniformities - Google Patents
A kind of method for measuring TFT-LCD liquid crystal substrate glass batch uniformities Download PDFInfo
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- CN108181244A CN108181244A CN201711242467.7A CN201711242467A CN108181244A CN 108181244 A CN108181244 A CN 108181244A CN 201711242467 A CN201711242467 A CN 201711242467A CN 108181244 A CN108181244 A CN 108181244A
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- liquid crystal
- crystal substrate
- substrate glass
- glass batch
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/3103—Atomic absorption analysis
Abstract
The invention discloses a kind of methods for measuring TFT LCD liquid crystal substrate glass batch uniformities, more parts of liquid crystal substrate glass batches are taken in same liquid crystal substrate glass batch batch can by sampling observation method, then it is diluted after being dissolved using dilute hydrochloric acid, after complete dilution, the uniformity of test Mg solution is carried out using the liquid crystal substrate glass batch after diluting as carrier using Atomic Absorption Spectrometer, utilize Mg solution dissolution characteristics, so that the test of TFT liquid crystal substrate glass batches is quick, simply, accuracy is high, the method of the present invention is simple, it is easy to operate, to ensureing the complete mixing of base plate glass batch, it is uniform to reach quality, a crucial step is played to control glass quality.
Description
Technical field
The present invention relates to a kind of analysis method of the glass batch uniformity, more particularly to a kind of measure TFT-LCD liquid crystal
The method of base plate glass batch uniformity.
Background technology
The uniformity of glass batch is to control the first step of glass quality key, and the previous common glass uniformity is practical
On be to be detected by measuring the content of soda ash in glass batch (sodium carbonate), common test method is volumetric method soda acid
The content of titration measuring and calculating sodium carbonate with the conductivity value of electrical conductivity method measuring and calculating batch, calculates the content of sodium carbonate, so as to obtain
Uniformity value, and display base plate glass is the silicon aluminum boron system glass of alkali-free (i.e. without potassium, sodium), cloud test, which cannot be used, to be held
Amount method and electrical conductivity method.
From the point of view of the raw material type of current TFT-LCD liquid crystal substrate glass batch composition, alkali-free glass belongs to RO-
SiO2-Al2O3And RO-SiO2-Al2O3-B2O3Series, and with RO-SiO2-Al2O3-B2O3Based on series, main composition is stone
Ying Fen, aluminium oxide, boric acid and alkaline-earth metal salt or oxide, wherein magnesian in batch content accounting 0.5-
3%, proportion is minimum in all batches, is least easily uniformly mixed, and the experience of generally use worker is matched at present
Mix, ununified standard determine whether liquid crystal substrate glass batch is uniformly mixed, and can not determine the equal of glass batch
Evenness.
Invention content
The purpose of the present invention is to provide it is a kind of measure TFT-LCD liquid crystal substrate glass batch uniformities method, with
Overcome the deficiencies in the prior art.
In order to achieve the above objectives, the present invention adopts the following technical scheme that：
A kind of method for measuring TFT-LCD liquid crystal substrate glass batch uniformities, includes the following steps：
Step 1), the liquid crystal substrate glass batch sample that phase homogenous quantities are extracted from same liquid crystal substrate glass batch
N parts；
Step 2), count by weight percentage adds in and crystal liquid substrate glass every part of liquid crystal substrate glass batch sample
Glass batch sample dilute hydrochloric acid solution identical in quality；
Step 3) dissolves by heating the liquid crystal substrate glass batch sample for adding in dilute hydrochloric acid solution, natural cooling
After filter；
Step 4), the N part liquid crystal substrate glass batch samples being utilized respectively after filtering are surveyed on Atomic Absorption Spectrometer
Try the absorbance a of the Mg solution of same concentrationsn；
The uniformity B of step 5), then liquid crystal substrate glass batch is：
In formula, amaxFor same concentrations are tested in N parts of liquid crystal substrate glass batch samples on Atomic Absorption Spectrometer
The maximum absorbance value of Mg solution；aminTo test phase on Atomic Absorption Spectrometer in N parts of liquid crystal substrate glass batch samples
With the minimum absorbance value of the Mg solution of concentration；apFor in N parts of liquid crystal substrate glass batch samples in Atomic Absorption Spectrometer
The maximum absorbance value of the Mg solution of upper test same concentrations.
Further, in step 1), in same liquid crystal substrate glass batch batch can, the liquid crystal of N parts of different locations is taken
Base plate glass batch sample removes the solid glass in every part of sample.
Further, in step 2), quartering division is carried out to every part of liquid crystal substrate glass batch sample, is then chosen
Portion adds in and liquid crystal substrate glass batch sample dilute hydrochloric acid identical in quality in every part of liquid crystal substrate glass batch sample
Solution is dissolved by heating, and then carries out cooling dilution.
Further, in step 4), Mg solution concentrations are 1-8ppm.
Further, in step 4), each parameter of Atomic Absorption Spectrometer is：Mg wavelength is 285.2nm；Lamp current is 7mA；
Combustion gas is acetylene air fuel combination；Burner height is 7mm, flow 16.8L/min.
Further, the dilute hydrochloric acid concentration in step 2) is less than 5mol/L.
Compared with prior art, the present invention has technique effect beneficial below：
A kind of method for measuring TFT-LCD liquid crystal substrate glass batch uniformities of the present invention, by inspecting method by random samples same
More parts of liquid crystal substrate glass batches are taken in liquid crystal substrate glass batch batch can, it is dilute after then being dissolved using dilute hydrochloric acid
It releases, after complete dilution, is tested using Atomic Absorption Spectrometer using the liquid crystal substrate glass batch after diluting as carrier
The uniformity of Mg solution utilizes Mg solution dissolution characteristics so that the test of TFT liquid crystal substrate glass batches is quick, simple, accurate
Exactness is high, and the method for the present invention is simple, easy to operate, and to ensureing the complete mixing of base plate glass batch, it is uniform to reach quality, to control
Glass quality processed plays a crucial step.
Specific embodiment
The present invention is described in further detail below：
A kind of method for measuring TFT-LCD liquid crystal substrate glass batch uniformities, includes the following steps：
Step 1), the liquid crystal substrate glass batch sample that phase homogenous quantities are extracted from same liquid crystal substrate glass batch
N parts；
Step 2), count by weight percentage adds in and crystal liquid substrate glass every part of liquid crystal substrate glass batch sample
Glass batch sample dilute hydrochloric acid solution identical in quality；
Step 3) dissolves by heating the liquid crystal substrate glass batch sample for adding in dilute hydrochloric acid solution, natural cooling
After filter；
Step 4), the N part liquid crystal substrate glass batch samples being utilized respectively after filtering are surveyed on Atomic Absorption Spectrometer
Try the absorbance a of the Mg solution of same concentrationsn；
The uniformity B of step 5), then liquid crystal substrate glass batch is：
In formula, amaxFor same concentrations are tested in N parts of liquid crystal substrate glass batch samples on Atomic Absorption Spectrometer
The maximum absorbance value of Mg solution；aminTo test phase on Atomic Absorption Spectrometer in N parts of liquid crystal substrate glass batch samples
With the minimum absorbance value of the Mg solution of concentration；apFor in N parts of liquid crystal substrate glass batch samples in Atomic Absorption Spectrometer
The maximum absorbance value of the Mg solution of upper test same concentrations.
In step 1), in same liquid crystal substrate glass batch batch can, the liquid crystal substrate glass of N parts of different locations is taken to match
Material sample is closed, removes the solid glass in every part of sample；
In step 2), quartering division is carried out to every part of liquid crystal substrate glass batch sample, then chooses portion every
Part liquid crystal substrate glass batch sample adds in and liquid crystal substrate glass batch sample dilute hydrochloric acid solution identical in quality, progress
It dissolves by heating, then carries out cooling dilution；
In step 4), Mg solution concentrations are 1-8ppm；
In step 4), each parameter of Atomic Absorption Spectrometer is：Optical source wavelength is 285.2nm；Lamp current is 7mA；Combustion gas is
Acetylene air fuel combination；Burner height is 7mm, flow 16.8L/min.
Dilute hydrochloric acid concentration in step 2) is less than 5mol/L；
Embodiment 1
6 parts of extraction is the liquid crystal substrate glass batch sample of 100g from same liquid crystal substrate glass batch；It presses
Weight percent calculates, and to every part of liquid crystal substrate glass batch sample addition and 100g dilute hydrochloric acid solutions, is dissolved by heating
Lysate is formed, is filtered after natural cooling, then lysate after cooling is diluted, the Mg solution of 1ppm is taken, utilizes 6 parts
The absorbance that liquid crystal substrate glass batch sample tests 1ppmMg solution on Atomic Absorption Spectrometer is respectively：0.865、
0.863rd, 0.865,0.836,0.862,0.862, the uniformity for finally calculating liquid crystal substrate glass batch is 96.6.
Claims (6)
- A kind of 1. method for measuring TFT-LCD liquid crystal substrate glass batch uniformities, which is characterized in that include the following steps：Step 1), N parts of the liquid crystal substrate glass batch sample that phase homogenous quantities are extracted from same liquid crystal substrate glass batch；Step 2), count by weight percentage adds in every part of liquid crystal substrate glass batch sample and matches with liquid crystal substrate glass Close the identical dilute hydrochloric acid solution of material sample quality；Step 3) dissolves by heating the liquid crystal substrate glass batch sample for adding in dilute hydrochloric acid solution, mistake after natural cooling Filter；Step 4), the N part liquid crystal substrate glass batch samples being utilized respectively after filtering test phase on Atomic Absorption Spectrometer With the absorbance a of the Mg solution of concentrationn；The uniformity B of step 5), then liquid crystal substrate glass batch is：In formula, amaxMg to test same concentrations in N parts of liquid crystal substrate glass batch samples on Atomic Absorption Spectrometer is molten The maximum absorbance value of liquid；aminIt is identical dense to be tested on Atomic Absorption Spectrometer in N parts of liquid crystal substrate glass batch samples The minimum absorbance value of the Mg solution of degree；apTo be surveyed on Atomic Absorption Spectrometer in N parts of liquid crystal substrate glass batch samples Try the maximum absorbance value of the Mg solution of same concentrations.
- 2. a kind of method for measuring TFT-LCD liquid crystal substrate glass batch uniformities according to claim 1, feature It is, in step 1), in same liquid crystal substrate glass batch batch can, takes the liquid crystal substrate glass cooperation of N parts of different locations Expect sample, remove the solid glass in every part of sample.
- 3. a kind of method for measuring TFT-LCD liquid crystal substrate glass batch uniformities according to claim 1, feature It is, in step 2), quartering division is carried out to every part of liquid crystal substrate glass batch sample, then chooses portion in every part of liquid Brilliant base plate glass batch sample adds in and liquid crystal substrate glass batch sample dilute hydrochloric acid solution identical in quality, is heated Dissolving, then carries out cooling dilution.
- 4. a kind of method for measuring TFT-LCD liquid crystal substrate glass batch uniformities according to claim 1, feature It is, in step 4), Mg solution concentrations are 1-8ppm.
- 5. a kind of method for measuring TFT-LCD liquid crystal substrate glass batch uniformities according to claim 1, feature It is, in step 4), each parameter of Atomic Absorption Spectrometer is：Mg wavelength is 285.2nm；Lamp current is 7mA；Combustion gas is empty for acetylene Gas fuel combination；Burner height is 7mm, flow 16.8L/min.
- 6. a kind of method for measuring TFT-LCD liquid crystal substrate glass batch uniformities according to claim 1, feature It is, the dilute hydrochloric acid concentration in step 2) is less than 5mol/L.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111707514A (en) * | 2020-06-17 | 2020-09-25 | 河北视窗玻璃有限公司 | Method for evaluating uniformity of glass batch |
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