CN114226302B - Cleaning method and fixing part of liquid crystal glass - Google Patents
Cleaning method and fixing part of liquid crystal glass Download PDFInfo
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- CN114226302B CN114226302B CN202111528562.XA CN202111528562A CN114226302B CN 114226302 B CN114226302 B CN 114226302B CN 202111528562 A CN202111528562 A CN 202111528562A CN 114226302 B CN114226302 B CN 114226302B
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- liquid crystal
- crystal glass
- cleaning
- organic solvent
- foam rubber
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 135
- 239000011521 glass Substances 0.000 title claims abstract description 120
- 238000004140 cleaning Methods 0.000 title claims abstract description 82
- 238000000034 method Methods 0.000 title claims abstract description 42
- 229920001821 foam rubber Polymers 0.000 claims abstract description 34
- 239000003960 organic solvent Substances 0.000 claims abstract description 21
- XMGQYMWWDOXHJM-JTQLQIEISA-N (+)-α-limonene Chemical compound CC(=C)[C@@H]1CCC(C)=CC1 XMGQYMWWDOXHJM-JTQLQIEISA-N 0.000 claims abstract description 16
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000006260 foam Substances 0.000 claims abstract description 12
- 239000002736 nonionic surfactant Substances 0.000 claims abstract description 8
- 239000001294 propane Substances 0.000 claims abstract description 8
- 238000002791 soaking Methods 0.000 claims abstract description 7
- 239000000244 polyoxyethylene sorbitan monooleate Substances 0.000 claims abstract description 6
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 claims abstract description 6
- 229920000053 polysorbate 80 Polymers 0.000 claims abstract description 6
- 238000007689 inspection Methods 0.000 claims description 8
- 239000000428 dust Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000002159 abnormal effect Effects 0.000 abstract description 4
- 229920001971 elastomer Polymers 0.000 description 7
- 239000003292 glue Substances 0.000 description 7
- 239000005060 rubber Substances 0.000 description 7
- 239000012530 fluid Substances 0.000 description 6
- GLDOVTGHNKAZLK-UHFFFAOYSA-N octadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCCCO GLDOVTGHNKAZLK-UHFFFAOYSA-N 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000004744 fabric Substances 0.000 description 5
- 229920005830 Polyurethane Foam Polymers 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000003995 emulsifying agent Substances 0.000 description 4
- 230000005571 horizontal transmission Effects 0.000 description 4
- 239000011496 polyurethane foam Substances 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 239000012459 cleaning agent Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- GOQYKNQRPGWPLP-UHFFFAOYSA-N n-heptadecyl alcohol Natural products CCCCCCCCCCCCCCCCCO GOQYKNQRPGWPLP-UHFFFAOYSA-N 0.000 description 3
- 238000006748 scratching Methods 0.000 description 3
- 230000002393 scratching effect Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 229920002799 BoPET Polymers 0.000 description 2
- 241000252254 Catostomidae Species 0.000 description 2
- 239000005062 Polybutadiene Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000013467 fragmentation Methods 0.000 description 2
- 238000006062 fragmentation reaction Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 229920002857 polybutadiene Polymers 0.000 description 2
- 229920001195 polyisoprene Polymers 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/14—Wipes; Absorbent members, e.g. swabs or sponges
- B08B1/143—Wipes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B11/00—Cleaning flexible or delicate articles by methods or apparatus specially adapted thereto
- B08B11/02—Devices for holding articles during cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Liquid Crystal (AREA)
Abstract
The invention relates to a cleaning method and a fixing part of liquid crystal glass, wherein the cleaning method comprises the following steps: removing foam rubber adsorbed on the surface of the liquid crystal glass; adding an organic solvent on the liquid crystal glass with the foam rubber left on the surface, and soaking for a preset period of time to enable the organic solvent to react with the foam rubber so as to dissolve the foam rubber; the organic solvent comprises d-limonene, propane, polyoxyethylene sorbitan monooleate and a nonionic surfactant; and removing the dissolved foam gum. The cleaning method is simple and easy to operate, high in speed and high in efficiency, and solves the problems that manual cleaning is difficult and liquid crystal glass is easy to damage, draw is abnormal and even broken in reworking of liquid crystal module production.
Description
Technical Field
The invention relates to the technical field of display, in particular to a cleaning method of liquid crystal glass and a fixing part.
Background
The liquid crystal display module consists of a liquid crystal panel and a backlight module, and is mainly divided into a direct type liquid crystal module and a side-entering type liquid crystal module according to the position of a light source, and along with the increasing requirements of consumers on the appearance, the product cancels a face frame with a traditional structure, liquid crystal glass is fixed by adopting colloid and the module, and double-sided foam glue is commonly used. In actual production, when the module is bad, the liquid crystal glass needs to be disassembled for reworking, and the liquid crystal glass and the middle frame are generally segmented by adopting a specific jig, and as the polyurethane foam is softer, the polyurethane foam can be segmented, one part of the polyurethane foam remains on the middle frame, and the other part of the polyurethane foam remains on the liquid crystal glass. In order to ensure that the quality of the assembled liquid crystal glass in the module is maintained at a good level, the module parts must be thoroughly cleaned, and the middle frame and the liquid crystal glass are ensured to be free of residual glue and foreign matters.
CN205393140U discloses a LCD liquid crystal glass surface cleaning device, which comprises a horizontal transmission mechanism, wherein the horizontal transmission mechanism is connected with a lifting mechanism, a scraper is arranged on the lifting mechanism, a spraying component for spraying a cleaning agent on the surface of an object is arranged above the scraper, the spraying component comprises a cleaning agent storage, a nozzle and a control valve for controlling the opening and closing of the outlet of the cleaning agent storage, and the horizontal transmission mechanism and the lifting mechanism jointly control the scraper to move according to a preset route and clean the object. The cleaning device disclosed by the utility model cleans the liquid crystal glass under the combined action of the scraper and the spraying component, so that the cleaning efficiency is high; the force of the scraper can be adjusted through the lifting mechanism, so that the scraper is applicable to different cleaning requirements, and the movement of the scraper is controlled through the lifting mechanism and the horizontal transmission mechanism; the waste materials scraped by the scraper are collected by the waste material collector, and are uniformly treated, so that dust in the waste materials is prevented from polluting the environment, and the dangers caused by scattering glass scraps are avoided.
CN210754247U discloses a liquid crystal glass cleaning device, which comprises a chassis, wherein a water pump component and an air pump component are arranged in the chassis; the chassis is connected with a roller conveying frame, and the roller conveying frame is sequentially provided with a brush cleaning assembly, a two-fluid cleaning assembly, a water shower cleaning assembly and an air knife cleaning assembly along the conveying direction; the brush cleaning assembly comprises a motor, and an upper roller brush and a lower roller brush which are connected with the motor; the two-fluid cleaning assembly is connected with the water pump assembly and the air pump assembly, the water shower cleaning assembly is connected with the water pump assembly, and the air knife cleaning assembly is connected with the air pump assembly. The liquid crystal glass cleaning device disclosed by the utility model is used for pre-cleaning before water cleaning, so that dirt is effectively removed, and the surface cleaning yield is ensured.
CN107159681a discloses a method for recovering liquid crystal from TFT-LCD liquid crystal display, which comprises the following steps: disassembling the TFT-LCD liquid crystal display, separating a liquid crystal box, cutting off edge glass of the periphery of the liquid crystal box, which is adhered with frame sealing glue, placing a liquid crystal glass substrate in a closed extractor, and introducing an extractant into the extractor to enable the extractant to fully contact with the liquid crystal glass substrate; the extractant reaches the temperature and pressure required by the supercritical fluid state, and the liquid crystal on the glass substrate is fully dissolved by the supercritical extractant fluid; the supercritical fluid dissolved with the liquid crystal enters a closed separator by reducing the pressure, so that the extractant in the supercritical fluid is converted into gas, the liquid crystal is converted into liquid, and the gaseous extractant and the liquid crystal are respectively collected; the collected liquid crystal is put into a hot dryer for drying treatment, and the TFT liquid crystal after the drying treatment is stored at low temperature under the following conditions: the temperature is-50-0 ℃ and the time is 24 hours.
In the prior art, cleaning of liquid crystal glass is mainly focused on surface cleaning, or the liquid crystal glass is disassembled by manual operation, so that the efficiency is low and the liquid crystal glass is easy to damage.
Therefore, it is important to develop a cleaning method that is simple and easy to operate and does not damage the liquid crystal glass.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a cleaning method and a fixing part of liquid crystal glass, wherein the cleaning method is simple and easy to operate, has high speed and high efficiency, and solves the problems of high manual cleaning difficulty, easy damage to the liquid crystal glass, abnormal painting and even fragmentation in the production and reworking of liquid crystal modules.
To achieve the purpose, the invention adopts the following technical scheme:
the invention provides a cleaning method of liquid crystal glass, which comprises the following steps:
removing foam rubber adsorbed on the surface of the liquid crystal glass;
adding an organic solvent on the liquid crystal glass with the foam rubber left on the surface, and soaking for a preset period of time to enable the organic solvent to react with the foam rubber so as to dissolve the foam rubber; the organic solvent comprises d-limonene, propane, polyoxyethylene sorbitan monooleate and a nonionic surfactant;
and removing the dissolved foam gum.
According to the cleaning method, the organic solvent is soaked on the liquid crystal glass according to the condition that the foam rubber remains on the surface of the liquid crystal glass, and the foam rubber on the surface is removed, so that the foam rubber on the surface of the reworked liquid crystal glass is removed with high efficiency and low damage.
Preferably, the d-limonene is present in a mass ratio ranging from 70% to 90%, such as 72%, 74%, 76%, 78%, 80%, 82%, 84%, 86%, 88%, etc., based on 100% of the total mass of the organic solvent.
Preferably, the mass fraction of propane is in the range of 10% -19%, e.g. 12%, 14%, 16%, 18%, etc., based on 100% of the total mass of the organic solvent.
Preferably, the polyoxyethylene sorbitan monooleate is present in a mass ratio ranging from 1% to 7%, for example 2%, 3%, 4%, 5%, 6% and the like, based on 100% of the total mass of the organic solvent. Polyoxyethylene sorbitan monooleate is abbreviated as emulsifier T-80, and CAS number is 9005-65-6.
Preferably, the nonionic surfactant is present in a mass ratio of < 5%, e.g. 4%, 3%, 2%, 1% etc., based on 100% of the total mass of the organic solvent.
Preferably, a flexible circuit board is arranged at the edge of the liquid crystal glass, and the two opposite sides of the flexible circuit board are respectively connected with the liquid crystal glass and the source printed circuit board;
before the foam rubber adsorbed on the surface of the liquid crystal glass is removed, the method further comprises the following steps:
fixing the flexible circuit board by a fixing member, wherein the fixing member includes:
the sucking disc component is adsorbed on the liquid crystal glass; the sucker assembly comprises a first sucker and a second sucker;
one end of the support rod is fixed on one side of the liquid crystal glass through the first sucker, and the other end of the support rod is fixed on the other side of the liquid crystal glass through the second sucker;
the support plate is provided with the support rod at one end and a containing nozzle at the other end, and the source printed circuit board is clamped through the containing nozzle structure;
the holding mouth is arranged in the supporting plate and is structurally divided into a supporting part and a biting part which are connected in a rotating way.
In the invention, the two sides of the flexible circuit board (COF) are connected with the liquid crystal glass and the source printed circuit board (main-PCB), if the liquid crystal glass and the source printed circuit board are not fixedly protected, the flexible circuit board and the source printed circuit board can rotate or move, so that the problems of fragmentation and the like of the liquid crystal glass are caused, and the yield of cleaning the liquid crystal glass is reduced. According to the invention, the flexible circuit board of the key part of the liquid crystal glass is fixed, when the flexible circuit board is fixed, the sucker component is adsorbed on the liquid crystal glass on one side and matched with the support rod, so that the liquid crystal glass is fixed, and the source printed circuit board is clamped on the other side through the containing mouth of the support plate, so that the flexible circuit board and the source printed circuit board are both fixed, and further the liquid crystal glass cannot be damaged due to bending.
Preferably, the foam rubber for removing the liquid crystal glass specifically comprises coarse cleaning and fine cleaning;
the rough cleaning specifically comprises: firstly, removing foam rubber attached to the liquid crystal glass by friction, and then cleaning the foam rubber adsorbed on the surface of the liquid crystal glass;
the fine cleaning includes dust removal.
Illustratively, the distance between the friction member and the liquid crystal glass during the rubbing process is adjusted to be 0.2-0.4mm, such as 0.2mm, 0.25mm, 0.3mm, 0.35mm, etc.
The invention controls the distance between the friction piece and the liquid crystal glass, so that the cleaning device contacts and rubs the foam rubber as much as possible, but does not contact the liquid crystal glass, the distance between the cleaning device and the surface of the liquid crystal glass is too small, the screen body is broken during friction, and the product yield is reduced.
Illustratively, the cleaning process is absorbed in a foam of a liquid crystal glass surface, and a block-shaped or strip-shaped rubber is provided on the cleaning device.
Preferably, the rubber surface is provided with dust-free cloth. The dust-free cloth prevents dust in the cleaning process from increasing the reworking procedure of the liquid crystal glass.
Preferably, the rubber comprises any one or a combination of at least two of polyisoprene, polybutadiene or butadiene-styrene copolymer.
Preferably, the rubber has a shore hardness of 35-45, such as 36, 37, 38, 39, 40, 41, 42, 43, 44, etc., more preferably 40.
Preferably, the operation of quality inspection is further included after the foam gel on the liquid crystal glass is removed.
Preferably, the step of removing the dissolved foam includes:
and friction is carried out to remove the foam rubber attached to the liquid crystal glass after soaking, and then the foam rubber is adsorbed on the surface of the liquid crystal glass through a silica gel sucker.
In a second aspect, the present invention provides a fixing member for fixing a flexible circuit board on liquid crystal glass in a process of cleaning a foam on the liquid crystal glass, the fixing member comprising:
the sucking disc component is adsorbed on the liquid crystal glass; the sucker assembly comprises a first sucker and a second sucker;
one end of the support rod is fixed on one side of the liquid crystal glass through the first sucker, and the other end of the support rod is fixed on the other side of the liquid crystal glass through the second sucker;
the support plate is provided with the support rod at one end and a containing nozzle at the other end, and the source printed circuit board is clamped by the containing nozzle;
the holding mouth is arranged in the supporting plate and is structurally divided into a supporting part and a biting part which are connected in a rotating way.
The fixing part comprises a sucker assembly, a supporting rod and a supporting plate, wherein the supporting plate is provided with a containing nozzle, the two sides of the supporting rod are provided with suckers for fixing liquid crystal glass, and the containing nozzle of the supporting plate clamps a source printed circuit board and fixes the source printed circuit board and the flexible printed circuit board. The concrete working mode is as follows: when the assembly is carried out, the containing mouth part is clamped with the S-PCB, after the position is confirmed, the suckers on the two sides are pressed with the glass substrate, and the fixing is completed by vacuum adsorption, so that the S-PCB and the COF part are prevented from moving or rotating.
Compared with the prior art, the invention has the following beneficial effects:
the cleaning method is simple and easy to operate, high in speed and high in efficiency, solves the problems that manual cleaning is difficult and liquid crystal glass is easy to damage, picture is abnormal and even broken in reworking of the production of the liquid crystal module, and takes less time within 520 seconds, and the product yield is over 90.2 percent.
Drawings
FIG. 1 is a schematic view showing the structure of a liquid crystal glass before cleaning in example 1;
FIG. 2 is a schematic view of a rotary air gun in the cleaning method of example 1;
FIG. 3 is a schematic view showing the structure of a cleaning apparatus in the cleaning method of embodiment 1;
FIG. 4 is a schematic view showing the structure of a fixing member in the cleaning method of embodiment 1;
FIG. 5 is a schematic view showing the structure of a fixing member for protecting a liquid crystal glass in the cleaning method of example 1;
wherein, 1-liquid crystal glass; 2-a middle frame; 3-foam rubber; 4-PET film; 5-an adhesive layer; 6-sucking discs and 7-supporting rods; 8-supporting plates; 9-receiving the mouth; 10-a flexible circuit board; 11-source printed circuit board.
Detailed Description
To facilitate understanding of the present invention, examples are set forth below. It will be apparent to those skilled in the art that the examples are merely to aid in understanding the invention and are not to be construed as a specific limitation thereof.
Example 1
The schematic diagram of the liquid crystal glass before cleaning is shown in fig. 1, the liquid crystal glass before cleaning includes a liquid crystal glass 1, a glue layer 5, a foam glue 3, a PET film 4, a glue layer 5 and a middle frame 2 which are sequentially stacked, and the cleaning method includes the following steps:
(1) Inserting the liquid crystal glass and the module middle frame into foam rubber by using a separation sheet (PET) with the thickness of 0.3mm, scratching, separating and taking out the liquid crystal glass;
after the liquid crystal glass is taken out, a fixing part is arranged on the liquid crystal glass, wherein the structural schematic diagram of the fixing part is shown in fig. 4, the structural schematic diagram of the fixing part for protecting the liquid crystal glass is shown in fig. 5, and the fixing part specifically comprises: the two sides of the flexible circuit board 10 are connected with liquid crystal glass and a source printed circuit board 11, the fixing part comprises a supporting rod 7 and a supporting plate 8, the supporting plate is provided with a containing nozzle 9, the two sides of the supporting rod are provided with sucking discs 6 for fixing the liquid crystal glass, the containing nozzle (divided into a supporting part and a biting part) of the supporting plate clamps the source printed circuit board, and the liquid crystal glass with residual foam glue on the surface is obtained after the liquid crystal glass and the flexible circuit board are fixed;
(2) The liquid crystal glass of the step (1) is ventilated for 8s at a wind speed of 12m/s by a rotary air gun with a structure schematic diagram shown in figure 2, and then an organic solvent (80 wt% of d-limonene, 15wt% of propane, 15wt% of emulsifying agent T-804wt% of nonionic surfactant stearyl alcohol 1 wt%) is added at a concentration of 2L/m 2 Dripping the added amount of the mixture on liquid crystal glass, and soaking for 4min;
(3) A block rubber (polyisoprene, shore hardness 40) and dust-free cloth are sequentially arranged on the surface from inside to outside as a cleaning device, the distance between the cleaning device and liquid crystal glass is controlled to be 0.3mm, foam rubber on the liquid crystal glass is removed through friction, and a structural schematic diagram of the cleaning device is shown in figure 3;
(4) Ventilating the liquid crystal glass obtained in the step (3) for 8s at the air speed of 12m/s, dedusting by using a dust-binding roller, and then performing quality inspection to obtain qualified quality inspection, thereby completing the cleaning process.
Example 2
The embodiment provides a cleaning method of liquid crystal glass, which comprises the following steps:
(1) Inserting the liquid crystal glass and the module middle frame into the foam rubber by using a separation sheet (PMMA) with the thickness of 0.2mm, scratching and separating, and arranging a fixing part on the liquid crystal glass, wherein the liquid crystal glass with the foam rubber remained on the surface is obtained as in the embodiment 1;
(2) Ventilating the liquid crystal glass of step (1) at a speed of 10m/s for 15s, and further ventilating an organic solvent (d-limonene 70wt%, propane 19wt%, emulsifier T-80 wt%, nonionic surfactant stearyl alcohol 4 wt%) at a speed of 1L/m 2 Dripping the added amount of the mixture on liquid crystal glass, and soaking for 3min;
(3) The method comprises the steps of taking block-shaped rubber (butadiene-styrene copolymer, shore hardness is 40) and dust-free cloth which are sequentially arranged on the surface from inside to outside as cleaning devices, controlling the distance between the cleaning devices and liquid crystal glass to be 0.3mm, and removing foam rubber on the liquid crystal glass by friction;
(4) Ventilating the liquid crystal glass obtained in the step (3) for 5 seconds at a wind speed of 15m/s, dedusting by using a dust adhering roller, and then performing quality inspection;
(5) And (5) repeating the steps (2), (3) and (4) once, and finishing cleaning after quality inspection is qualified.
Example 3
The embodiment provides a cleaning method of liquid crystal glass, which comprises the following steps:
(1) Inserting the liquid crystal glass and the module middle frame into the foam rubber by using a separating sheet (PC) with the thickness of 0.25mm, scratching and separating, and arranging a fixing part on the liquid crystal glass, wherein the liquid crystal glass with the foam rubber remained on the surface is obtained as in the embodiment 1;
(2) Ventilating the liquid crystal glass of step (1) at a wind speed of 15m/s for 5s, and further ventilating an organic solvent (d-limonene 88wt%, propane 10wt%, emulsifier T-80 wt%, nonionic surfactant stearyl alcohol 1 wt%) at a wind speed of 3L/m 2 Dripping the added amount of the mixture on liquid crystal glass, and soaking for 5min;
(3) Sequentially setting strip-shaped rubber (polybutadiene with Shore hardness of 40) and dust-free cloth on the surface from inside to outside as a cleaning device, controlling the distance between the cleaning device and the liquid crystal glass to be 0.4mm, and removing foam rubber on the liquid crystal glass by friction;
(4) Ventilating the liquid crystal glass obtained in the step (3) for 10 seconds at a wind speed of 10m/s, dedusting by using a dust adhering roller, and then performing quality inspection;
(5) And (5) repeating the steps (2), (3) and (4) for three times, and finishing cleaning after quality inspection is qualified.
Comparative example 1
The present comparative example provides a cleaning method of liquid crystal glass, comprising the steps of:
and (3) manually cutting off foam rubber from the liquid crystal glass, rubbing, cleaning and finishing cleaning.
Performance testing
The cleaning tests described in examples 1-3 were subjected to the following statistics:
(1) Time consuming: the time taken after the cleaning process was completed was recorded.
(2) Product yield: the number of products meeting the requirements after cleaning was recorded.
The test results are summarized in table 1.
TABLE 1
| Time-consuming (second) | Yield (%) | |
| Example 1 | 368 | 99.5 |
| Example 2 | 310 | 90.2 |
| Example 3 | 520 | 93.4 |
As can be seen from analysis of the data in Table 1, the method of the invention takes less than 520 seconds, the product yield is more than 90.2%, the method of the invention is simple and easy to operate, the speed is high, the efficiency is high, and in the production and reworking of the liquid crystal module, the problems of high manual cleaning difficulty, easy damage to liquid crystal glass, abnormal painting and even fragment breakage are solved.
As can be seen from the analysis of comparative example 1 and example 1, the time consumption of comparative example 1 is much higher than 520s by adopting a manual method, and the product yield is related to the manual experience and has large fluctuation, so that the cleaning method is more beneficial to reworking and recycling of the liquid crystal glass compared with the manual method.
The applicant states that the detailed method of the present invention is illustrated by the above examples, but the present invention is not limited to the detailed method described above, i.e. it does not mean that the present invention must be practiced in dependence upon the detailed method described above. It should be apparent to those skilled in the art that any modification of the present invention, equivalent substitution of raw materials for the product of the present invention, addition of auxiliary components, selection of specific modes, etc., falls within the scope of the present invention and the scope of disclosure.
Claims (2)
1. The cleaning method of the liquid crystal glass is characterized in that a flexible circuit board is arranged at the edge of the liquid crystal glass, and the liquid crystal glass and a source printed circuit board are respectively connected to two sides of the flexible circuit board; fixing the flexible circuit board by a fixing member, wherein the fixing member includes:
the sucking disc component is adsorbed on the liquid crystal glass; the sucker assembly comprises a first sucker and a second sucker;
one end of the support rod is fixed on one side of the liquid crystal glass through the first sucker, and the other end of the support rod is fixed on the other side of the liquid crystal glass through the second sucker;
the support plate is provided with the support rod at one end and a containing nozzle at the other end, and the source printed circuit board is clamped by the containing nozzle;
the accommodating nozzle is arranged in the supporting plate, and the structure of the accommodating nozzle is divided into a supporting part and a biting part;
the cleaning method comprises the following steps:
(1) Separating the foam rubber on the surface of the liquid crystal glass to obtain the liquid crystal glass with foam rubber remained on the surface;
(2) Adding an organic solvent on the liquid crystal glass with the foam rubber left on the surface, and soaking for a preset period of time to enable the organic solvent to react with the foam rubber so as to dissolve the foam rubber; the organic solvent comprises d-limonene, propane, polyoxyethylene sorbitan monooleate and a nonionic surfactant;
the mass ratio of the d-limonene is 70% -90% based on 100% of the total mass of the organic solvent; the mass ratio of the propane is 10% -19% based on 100% of the total mass of the organic solvent; the mass ratio of the polyoxyethylene sorbitan monooleate is 1% -7% based on 100% of the total mass of the organic solvent; the mass ratio of the nonionic surfactant is less than 5% based on 100% of the total mass of the organic solvent;
(3) Removing the dissolved foam gum;
the step of removing the dissolved foam gum comprises coarse cleaning and fine cleaning; the rough cleaning includes: removing foam rubber on the liquid crystal glass by friction; the fine cleaning includes: dust is removed by a dust-sticking roller.
2. The method of claim 1, wherein the cleaning method further comprises a quality inspection operation after the dissolved foam is removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111528562.XA CN114226302B (en) | 2021-12-14 | 2021-12-14 | Cleaning method and fixing part of liquid crystal glass |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111528562.XA CN114226302B (en) | 2021-12-14 | 2021-12-14 | Cleaning method and fixing part of liquid crystal glass |
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| Publication Number | Publication Date |
|---|---|
| CN114226302A CN114226302A (en) | 2022-03-25 |
| CN114226302B true CN114226302B (en) | 2024-01-12 |
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|---|---|---|---|
| CN202111528562.XA Active CN114226302B (en) | 2021-12-14 | 2021-12-14 | Cleaning method and fixing part of liquid crystal glass |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103849496A (en) * | 2014-03-19 | 2014-06-11 | 广州麦饭石化工技术有限公司 | Adhesive residue detergent of adhesive sticker and production process of adhesive residue detergent |
| CN207645598U (en) * | 2017-12-26 | 2018-07-24 | 贵州汤姆逊电气有限公司 | A kind of Acetabula device for large scale liquid crystal glass substrate |
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2021
- 2021-12-14 CN CN202111528562.XA patent/CN114226302B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103849496A (en) * | 2014-03-19 | 2014-06-11 | 广州麦饭石化工技术有限公司 | Adhesive residue detergent of adhesive sticker and production process of adhesive residue detergent |
| CN207645598U (en) * | 2017-12-26 | 2018-07-24 | 贵州汤姆逊电气有限公司 | A kind of Acetabula device for large scale liquid crystal glass substrate |
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| CN114226302A (en) | 2022-03-25 |
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