CN1272615C - Contamination detecting method for LCD cell panel and sampling tool therefor - Google Patents
Contamination detecting method for LCD cell panel and sampling tool therefor Download PDFInfo
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- CN1272615C CN1272615C CN 03148928 CN03148928A CN1272615C CN 1272615 C CN1272615 C CN 1272615C CN 03148928 CN03148928 CN 03148928 CN 03148928 A CN03148928 A CN 03148928A CN 1272615 C CN1272615 C CN 1272615C
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- liquid crystal
- same parents
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Abstract
The present invention relates to a liquid crystal cell panel pollution detection method which comprises the following steps: (a) a liquid crystal cell panel is provided; (b) a liquid crystal sample is obtained from the surface of the liquid crystal cell panel by using a sampling tool; (c) the liquid crystal sample is washed away from the sampling tool through a solvent; (d) components of the liquid crystal sample is analyzed; (e) the strengths of the components are determined so as to judge whether the liquid crystal cell panel is polluted.
Description
Technical field
The present invention relates to a kind of liquid crystal pollution detection method and sampling instrument thereof, particularly relate to a kind of method of utilizing sampling instrument to carry out the liquid crystal sampling.
Background technology
Lcd technology is used in the general electronic product widely at present, such as counter, electronic watch, mobile phone screen, the employed instrument of hospital or the screen above the digital camera or the like, LCD is to be basic module with the liquid crystal material, since liquid crystal be between solid-state and liquid between, it but has the material of liquid and crystallization both sides character in a certain temperature range, also because its unique state, just its called after " Liquid Crystal ", be exactly the meaning of liquid crystals material afterwards.Therefore, liquid crystal not only has the solid crystals optical characteristics, has the liquid flow dynamic characteristic again, and liquid crystal molecule can be subjected to the influence of voltage, changes the ordered state of its molecule, and can allow the light of injecting produce the phenomenon of deflection.
LCD is frivolous with it, flicker free, numerous advantages such as radiationless are attracting everybody's sight always, mainly be to show with liquid crystal panel (LCD panel), general comparatively common LCD can divide into stable twisted nematic LCD (TN-LCD), STN Super TN type LCD (STN-LCD) and Thin Film Transistor-LCD three major types such as (TFT-LCD), wherein the TFT-LCD panel is the existing market main flow, the processing procedure of TFT-LCD panel mainly can be divided into three phases: at first be referred to as thin-film transistor component multiple substrate processing procedure (Array or Panel processing procedure), its process is for forming thin film transistor (TFT) (TFT) array on glass substrate; Secondly be liquid crystal born of the same parents panel assembling (Cell processing procedure), its process is fitted for going up lower-glass (array panel and colored filter), and pours into liquid crystal in it; Be referred to as liquid crystal panel module assembling (Module or LCM processing procedure) at last, its process is panel and the parts combinations such as backlight module, driving and control circuit board after will fitting, in detail, finish the assembling of outside line (for example drive IC and signal circuit road plate) at the module leading portion of LCD processing procedure after, again liquid crystal panel is cut, it is become after the suitable size, send into backlight module assembling zone, assemble with the backlight module that is constituted by blooming piece, light guide plate, fluorescent tube etc.But, in carrying out the process of liquid crystal panel assembling, one of the problem that overcomes least easily is that pollutant comprises scolding tin etc. because of the environment of liquid crystal panel and liquid crystal panel itself foreign matter because of generations such as liquid crystal born of the same parents engineerings.In addition, liquid crystal panel also may make the foreign matter in its easier absorption environment because of friction produces electrostatic problem when cutting or conveying.These are attached to the foreign matter on the liquid crystal panel if do not remove, and bring the assembling district into along with liquid crystal panel, then may cause the assembly failure rate of liquid crystal indicator to increase, and then cause operating personnel's output efficiency to reduce, and cause the flaw of product optics.Moreover, when pollutant enters liquid crystal in via former material or encapsulation process, be that liquid crystal is present in the final state among the liquid crystal born of the same parents at this moment, therefore, must accurately measure the concentration of these pollutants.
The detection method of known LCD is the array method for circuit inspection, is divided into three kinds of methods, and they are respectively optical means, electrical method or electric optical activity method.Optical means for and contiguous pattern between make comparisons so that the mode that the bad zone of pattern in the repeat patterns part is extracted out.Electrical method then is to utilize the same quadrat method of semiconductor memory component test on LCD array circuit, on the array circuit, form capacitor (condenser), and actual LCD and same TFT passed to electric current (lotus) and produce the electronic signal that writes and read, so that check out its unusual defective products.The method of electrooptics then is a kind of detection mode of boundary between above-mentioned two kinds of methods, capacitor that electric charge writes and idiostatic tin indium oxide (Indium Tin Oxide, ITO) electrode potential passes to electro-optic assemblies and the conversion that produces optical image, to check out defective products.Above-mentioned three kinds of methods all can be tried to achieve information such as the place of bad position and bad shape kind, and bad kind can be classified by the relation of various poor prognostic causes and electric characteristics.Yet, can't know the composition or the concentration of the pollution source of learning liquid crystal.Particularly, because the difficulty of sampling, there is no suitable measuring method each light lattice (Cell) in order to quantitative test TFT at present, the problem that desire of the present invention solves is that pollutant is done more detailed quantitative test, and needs a kind of measurement pollution method and sampling instrument.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of pollution sampling instrument of liquid crystal born of the same parents panel, accurate extraction contains the liquid crystal of pollution on panel, analyzes its concentration and composition, and can be by the accuracy of its sampling pollution of the edge effect of panel.
Another object of the present invention is to provide a kind of contamination detection method of liquid crystal born of the same parents panel, be different from known electrical measuring method fully, but the concentration of the pollutant in areal sampling liquid crystal and the measurement liquid crystal, the concentration of more accurate quantitative test pollutant.
For achieving the above object, the contamination detection method that the invention provides a kind of liquid crystal born of the same parents panel may further comprise the steps: the liquid crystal born of the same parents (a) are provided panel; (b) utilize sampling instrument to obtain the liquid crystal sample from liquid crystal born of the same parents panel surface; (c) use solvent that the liquid crystal sample is washed by the sampling instrument upper punch; (d) composition of analysis liquid crystal sample; And the concentration of (e) obtaining composition, whether contaminated to judge liquid crystal born of the same parents panel.
In a preferred embodiment, the contamination detection method of liquid crystal born of the same parents panel further comprises, the step of standard value is provided, and when concentration value of being above standard of composition, liquid crystal born of the same parents panel promptly is judged to be contaminated;
Acetone solvent;
Sampling instrument has first surface and second surface, and first, second surface all has a plurality of particles, and liquid crystal is adsorbed on first, second surface easily;
Sampling instrument is made by Teflon.
The present invention provides a kind of contamination detection method of liquid crystal born of the same parents panel in addition, may further comprise the steps: the liquid crystal born of the same parents (a) are provided panel; (b) utilize sampling instrument to obtain a plurality of liquid crystal samples from not existing together of plurality of blocks surface; (c) use solvent that plural liquid crystal sample is washed by the sampling instrument upper punch; (d) composition of the plural liquid crystal sample of analysis; And the concentration of (e) obtaining plural composition, whether contaminated to judge liquid crystal born of the same parents panel.
In a preferred embodiment, the contamination detection method of liquid crystal born of the same parents panel further comprises, liquid crystal born of the same parents panel is divided into the step of plurality of blocks, and wherein step (b) is for getting a liquid crystal sample in each block;
Liquid crystal born of the same parents panel is divided into nine blocks;
Plurality of blocks is lined up array;
Array is 3 * 3.
In a preferred embodiment, the contamination detection method of liquid crystal born of the same parents panel further comprises, the step of standard value is provided, and when concentration value of being above standard of plural composition, liquid crystal born of the same parents panel promptly is judged to be contaminated;
Acetone solvent;
Sampling instrument has first surface and second surface, and first, second surface all has a plurality of particles, and liquid crystal is adsorbed on first, second surface easily;
Sampling instrument is made by Teflon.
The sampling instrument that the present invention further provides a kind of pollution detection of liquid crystal born of the same parents panel comprises main body and a plurality of particle, wherein, main body comprises top, pars intermedia and bottom again, pars intermedia connects top and bottom, pars intermedia then comprises first surface and second surface, and first surface and second surface are opposing face, and the bottom comprises the 3rd surface, wherein the 3rd surface is connected with first surface, and a plurality of particle is arranged on first surface, second surface and the 3rd surface;
Sampling instrument is made by Teflon;
Sampling instrument is that flexible material is made;
Sampling instrument further comprises the leader, and is arranged on the top of main body.
For above and other objects of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and in conjunction with appended diagram, be described in detail as follows:
Description of drawings
Fig. 1 is a liquid crystal born of the same parents panel pollution detection sampling instrument front schematic view of the present invention.
Fig. 2 a is a liquid crystal born of the same parents panel pollution detection sampling instrument side schematic view of the present invention.
Fig. 2 b is the side schematic view of the case of bending of liquid crystal born of the same parents panel pollution detection sampling instrument of the present invention.
Fig. 3 is the contamination detection method process flow diagram of liquid crystal born of the same parents panel of the present invention.
Fig. 4 is a liquid crystal born of the same parents panel subregion synoptic diagram of the present invention.
Fig. 5 is the size synoptic diagram of a block TFT-1 in the liquid crystal born of the same parents panel of the present invention.
Fig. 6 is the concentration synoptic diagram of each block of liquid crystal born of the same parents panel of the present invention.
Symbol description
10 sampling instruments
11 tops
12 pars intermedias
13 bottoms
14 particles
22 liquid crystal
100 main bodys
121 first surfaces
122 second surfaces
131 the 3rd surfaces
200 liquid crystal born of the same parents panels
201 edges
TFT-1, TFT-2, TFT-3, TFT-4, TFT-5, TFT-6, TFT-7, TFT-8 and TFT-9 block
L～length
W～width
H～highly
Embodiment
For the pollutant in the liquid crystal is done more detailed quantitative test, the invention provides a kind of liquid crystal born of the same parents panel measuring contamination method and sampling instrument.Shown in Fig. 1,2a and 2b, the present invention extracts the liquid crystal 22 that contains pollutant via sampling instrument 10 on panel 200, by liquid crystal born of the same parents panel measuring contamination method of the present invention, measure the concentration and the composition of the pollutant in the liquid crystal 22, and can be by the accuracy of its sampling pollution of the edge effect of panel 200, especially the closer to the liquid crystal 22 of face plate edge, its pollution concentration is just high more.Usually the pollutant of liquid crystal comprises metallic ion, for example Na
+, therefore must take a sample and know Na
+Concentration, below describe sampling instrument of the present invention in detail.
Shown in Fig. 2 a, the sampling instrument 10 of the pollution detection of liquid crystal born of the same parents panel 200 comprises main body 100 and a plurality of particle 14, wherein, main body 100 comprises top 11, pars intermedia 12 and bottom 13, pars intermedia 12 connects top 11 and bottom 13,12 of pars intermedias comprise first surface 121 and second surface 122, first surface 121 is an opposing face with second surface 122, and bottom 13 comprises the 3rd surface 131, wherein the 3rd surface 131 is connected with first surface 121, and above-mentioned particle 14 is for being arranged on first surface 121, second surface 122 and the 3rd surface 131.The material of the sampling instrument 10 of this embodiment is mainly based on the material of not stripping pollutant, for example Teflon itself has stable properties, be difficult for producing chemical change with pollutant, therefore, sampling instrument is normally made by Teflon, in addition, material must have pliability, and can make sampling instrument 10 bendings, shown in 2b figure, to scrape when getting liquid crystal sample 22, the absorption affinity of Teflon own is not strong, so the lip-deep plural particle 14 at sampling instrument causes capillarity, make liquid crystal 22 easily attached on the particle 14.Though do not show on the figure that sampling instrument can further comprise the leader, and is arranged on the top 11 of main body 100.
This embodiment can have one to change example, makes sampling instrument 10 have coarse surface, and plural particle and rough surface all can make it produce capillarity, make pollutant be adsorbed on the sampling instrument easily.
Fig. 3 is the contamination detection method process flow diagram of liquid crystal born of the same parents panel of the present invention.As shown in Figures 3 and 4, at first, liquid crystal born of the same parents panel 200 (step S301) is provided, in order not influenced the accuracy that its sampling is polluted by the edge 201 of panel 200, liquid crystal born of the same parents panel 200 can be separated sampling, utilize sampling instrument 10 to obtain a plurality of liquid crystal samples (S302), after sampling instrument 10 is obtained sample, use solvent (using acetone usually) that plural liquid crystal sample is washed (S303) by sampling instrument 10 upper punches from not existing together of plurality of blocks surface; Repeat above-mentioned steps S302 and S303 up to the liquid crystal sample (S304) of obtaining each block, next, analyze the composition and the concentration (S305) of plural liquid crystal sample, and pollutant component and the concentration (S306) of obtaining each block, to judge liquid crystal born of the same parents panel 200 whether contaminated (S307).
The step that further comprises areal sampling among step S302 of the present invention～S304, as shown in Figure 4, liquid crystal born of the same parents panel 200 is divided into plurality of blocks: TFT-1, TFT-2, TFT-3, TFT-4 TFT-5, TFT-6, TFT-7, TFT-8 and TFT-9, in each block, get a liquid crystal sample, it is 3 * 3 that plurality of blocks is lined up array, in other words, liquid crystal born of the same parents panel 200 is separated into nine blocks, each block has fixed-area, each lattice is a preferred implementation apart from glass edge 201 about 1cm, on each block, utilize above-mentioned sampling instrument 10 to take out the liquid crystal that needs measurement, therefore can not touch the edge of panel.
The analysis and the account form of the pollutant levels of liquid crystal below are described, and the while is with reference to step S305～S309 of figure 3.Analyze the composition and the concentration of the liquid crystal sample of each block, the present invention utilizes the quantitative Analysis pollutant levels, above-mentioned sampling instrument 10 scraped the liquid crystal solution got collect, and the volume that is defined in the liquid crystal sample that each block obtains is V that the concentration of measuring the liquid crystal sample is C
0(S305), calculate the volume of the liquid crystal of each block again, for instance, when panel was divided into nine blocks, as shown in Figure 5, Fig. 5 was the wherein size synoptic diagram of a block TFT-1 of liquid crystal born of the same parents panel of the present invention, the liquid crystal volume (V of each block
0) be
V
0＝(L*W*H/2)/9
The length of L=liquid crystal block wherein;
The width of W=liquid crystal block;
1/2 of the height (H) of H/2=liquid crystal block;
Via each pollutant in the chemical analysis liquid crystal sample or constituent concentration (S305), obtain the test concentrations (C of each liquid crystal sample
0), by following formula: C=C
0* (V/V
0), and the real concentration C (step S306) of going back parent pollutant.
After the step S306, judge whether concentration is higher than standard value (S307), composition Na
+Standard value normally between 200-300ppb, as composition Na
+Concentration surpass this standard value, liquid crystal born of the same parents panel promptly is judged to be contaminated (S308), as shown in Figure 6, show an experimental data, being respectively 559ppb and 335ppb near the block TFT-1 of face plate edge 201 and the concentration of TFT-2, apparently higher than the higher limit 300ppb of standard value, is contaminated via this panel of measuring method decidable of the present invention therefore, if the concentration C of each block is less than standard value, promptly this liquid crystal born of the same parents panel is by test (S309).
But the contamination detection method areal sampling liquid crystal of above-described liquid crystal born of the same parents panel and measure the concentration of the pollutant in the liquid crystal, the further concentration of quantitative test pollutant accurately.
Though the present invention discloses as above with preferred embodiment; right its is not in order to qualification the present invention, for those of ordinary skills, and without departing from the spirit and scope of the present invention; change that Ying Kezuo is a little and retouching, so protection scope of the present invention is looked the claim person of defining and is as the criterion.
Claims (11)
1, a kind of contamination detection method of liquid crystal born of the same parents panel may further comprise the steps:
(a) provide the liquid crystal born of the same parents panel;
(b) utilize sampling instrument to obtain the liquid crystal sample from this liquid crystal born of the same parents panel surface;
(c) use solvent that this liquid crystal sample is washed by this sampling instrument upper punch;
(d) analyze the composition of this liquid crystal sample; And
(e) obtain the concentration of this composition, whether contaminated to judge this liquid crystal born of the same parents panel,
Wherein this sampling instrument has first surface and second surface, and this first, second surface all has a plurality of particles, and this liquid crystal is adsorbed on this first, second surface easily.
2, the contamination detection method of liquid crystal born of the same parents panel as claimed in claim 1 further comprises the step that standard value is provided in step (d) with (e), and when the concentration of this composition surpasses this standard value, this liquid crystal born of the same parents panel promptly is judged to be contaminated.
3, the contamination detection method of liquid crystal born of the same parents panel as claimed in claim 1, wherein this solvent is an acetone.
4, the contamination detection method of liquid crystal born of the same parents panel as claimed in claim 1, wherein this sampling instrument is made by Teflon.
5, a kind of contamination detection method of liquid crystal born of the same parents panel may further comprise the steps:
(a) provide the liquid crystal born of the same parents panel;
(b) this liquid crystal born of the same parents panel is divided into a plurality of blocks;
(c) utilize sampling instrument to obtain a plurality of liquid crystal samples from not existing together of these block surfaces;
(d) use solvent that these liquid crystal samples are washed by this sampling instrument upper punch;
(e) analyze the composition of these liquid crystal samples; And
(f) obtain the concentration of these compositions, whether contaminated to judge this liquid crystal born of the same parents panel,
Wherein this sampling instrument has first surface and second surface, and this first, second surface all has a plurality of particles, and this liquid crystal is adsorbed on this first, second surface easily.
6, the contamination detection method of liquid crystal born of the same parents panel as claimed in claim 5 wherein is divided into nine blocks with this liquid crystal born of the same parents panel.
7, the contamination detection method of liquid crystal born of the same parents panel as claimed in claim 5, wherein these blocks are lined up array.
8, the contamination detection method of liquid crystal born of the same parents panel as claimed in claim 7, wherein this array is 3 * 3.
9, the contamination detection method of liquid crystal born of the same parents panel as claimed in claim 5 further comprises the step that standard value is provided in step (e) with (f), and when the concentration of these compositions surpasses this standard value, this liquid crystal born of the same parents panel promptly is judged to be contaminated.
10, the contamination detection method of liquid crystal born of the same parents panel as claimed in claim 5, wherein this solvent is an acetone.
11, the contamination detection method of liquid crystal born of the same parents panel as claimed in claim 5, wherein this sampling instrument is made by Teflon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03148928 CN1272615C (en) | 2003-06-24 | 2003-06-24 | Contamination detecting method for LCD cell panel and sampling tool therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03148928 CN1272615C (en) | 2003-06-24 | 2003-06-24 | Contamination detecting method for LCD cell panel and sampling tool therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1566919A CN1566919A (en) | 2005-01-19 |
| CN1272615C true CN1272615C (en) | 2006-08-30 |
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ID=34472423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03148928 Expired - Fee Related CN1272615C (en) | 2003-06-24 | 2003-06-24 | Contamination detecting method for LCD cell panel and sampling tool therefor |
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|---|---|
| CN (1) | CN1272615C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105651542B (en) * | 2015-12-29 | 2020-04-17 | 芜湖东旭光电科技有限公司 | Glass substrate sampling device and method |
| CN108469407B (en) * | 2018-03-16 | 2021-01-12 | 中国石油大学(华东) | Device and method for detecting surface cleanliness |
| CN109782460A (en) * | 2019-01-22 | 2019-05-21 | 深圳市华星光电半导体显示技术有限公司 | The detection method of liquid crystal display panel |
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2003
- 2003-06-24 CN CN 03148928 patent/CN1272615C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1566919A (en) | 2005-01-19 |
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