CN1199079C - Manufacturing method of liquid crystal display device - Google Patents
Manufacturing method of liquid crystal display device Download PDFInfo
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- CN1199079C CN1199079C CN 03113216 CN03113216A CN1199079C CN 1199079 C CN1199079 C CN 1199079C CN 03113216 CN03113216 CN 03113216 CN 03113216 A CN03113216 A CN 03113216A CN 1199079 C CN1199079 C CN 1199079C
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- liquid crystal
- crystal display
- substrate
- alignment layers
- resin
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Abstract
The present invention relates to a manufacturing method of a liquid crystal display device. The method comprises the following steps: a liquid crystal display element is manufactured, and a terminal part of the liquid crystal display element is connected with an external driving circuit. The present invention is characterized in that in the technical processes that the liquid crystal display element is manufactured and the external driving circuit is connected, when the area of a base plate reaches more than 1.5m#+[2], the whole area of the base plate is coated with a PI direction matching layer; a method of plasma electric discharge and local cutting is adopted, and the part of the direction matching layer which is accumulated on the circumference of liquid crystal and needs to be coated with adhesive, and the part of the direction matching layer which is accumulated on the terminal part of an electrode connected with the external driving circuit are removed in a selective mode. The present invention adopts the base plate of more than 1.5m#+[2] to manufacture a liquid crystal display device with high reliability coefficient, and the production efficiency is greatly improved.
Description
Technical field
The present invention relates to a kind of manufacture method of liquid crystal indicator, particularly a kind of at 1.5m
2Efficiently, correctly form the method for required alignment film mould case on the above large-area substrates.
Background technology
Since lcd technology begins to use, should make both alignment layers (Alignment Layer) orientation very equably in the liquid crystal display scope of liquid crystal display cells, make external power source end that drives used for liquid crystal display element and the part that is electrically connected not scribble the both alignment layers of insulating property (properties) again, be the technical barrier that this area need solve always.So-called both alignment layers is one deck alignment film that is coated on the substrate (Substrate), the method that in the past formed alignment film has two kinds, a kind of is to adopt the material of stable on heating glass Ya Mite (Polyimide) (code name is PI) resin as both alignment layers, general formation method is earlier this solubility PI material to be dissolved in the solvent (Solvent) of a few percent, form the solution material and be coated on then on the glass substrate, after evaporating, form both alignment layers again.Another kind is with combination reaction thing (Reactant) the glass Ya Mite acid of four-carboxylic attitude acid two anhydrides (Tetra-carboxylic acid 2 anhydride) with Ji Amin (Di-amin), be coated on the glass substrate, form the both alignment layers of PI resin then through the sintering process dehydrating condensation.For the portion of terminal at liquid crystal display cells is effectively carried external drive circuit, must remove the both alignment layers of insulating property (properties) at corresponding site, and the method for removing above-mentioned formation resin alignment film can use the method for the strong strong ammonia solvent liquid long period of soaking of dissolubility to solve.But removing the insulation both alignment layers in this etch of industrial application, because the time is long, efficient is too low, obviously is unpractical.Therefore, all be to form needed mould case at present by printing process, promptly use the PI printing machine to form desired mould case.Desired mould case is the pears ground shape plate (Pear like skin) that adopts photoresist (Photosensitive resin) plate to make, with the transfer printing of PI liquid on substrate.Facts have proved, at 730 * 920mm in the past
2The substrate of following specification, making is feasible in this way.Along with the development of liquid crystal indicator, in order further to enhance productivity and output, require the family status template area in the manufacturing process to do greatly as far as possible, still, at 1200 * 1300mm
2Substrate, during fabrication owing to many reasons such as unbalance stress, the formed alignment film thickness in cylinder two ends (Layer thickness) inequality produces distortion, can't correctly form mould case (Pattern), makes yields descend.For 1500 * 1800mm
2Substrate, the result can't obtain certified products completely at all.When the area of template reaches 1.5m
2When above, former desired model can't correctly form alignment film with printing process on substrate.Therefore, proposed how could to form required this problem of mould case.
The present invention seeks to propose a kind of method that on large-area substrates, efficiently, correctly forms required mould case, make new method, overcome above-mentioned deficiency with this thereby create a kind of liquid crystal indicator.
Summary of the invention
For achieving the above object, the technical solution used in the present invention is:
A kind of manufacture method of liquid crystal indicator is characterized in that comprising following manufacturing step:
(1), at area greater than 1.5m
2Substrate on, earlier to substrate gross area coating PI resin material, then through form PI resin both alignment layers around the connection dehydrating condensation;
(2), adopt the method for plasma (Plasma) discharge partial cut, remove the PI resin both alignment layers part that is deposited on the mucous membrane pattern position;
(3), to the substrate orientation that rubs;
(4), on the above-mentioned mucous membrane pattern position that has been removed PI resin both alignment layers part, retouch and be coated with araldite;
(5), with liquid crystal configurations in the medial region of mucous membrane pattern, two substrates are fitted relatively becomes to have the large-scale liquid crystal display of some pictures again;
(6), each liquid crystal region cut apart cut-out after, stick Polarizer (Polarizer), make liquid crystal display cells;
(7), on the portion of terminal of each liquid crystal display cells, use in above-mentioned (2) step same method to remove and be deposited in this locational both alignment layers part respectively;
(8), again on this portion of terminal, carry and stick external drive circuit, and the configuration backlight is assembled into liquid crystal indicator.
The related content of technique scheme is explained as follows:
1, principle of work of the present invention is: at the existing a kind of new method of innovating by the deficiency that forms the both alignment layers method of required mould case after printing, this method is after forming the both alignment layers of gross area on the substrate, adopt the method for plasma (Plasma) discharge partial cut to remove unnecessary particular, make the precision of thickness improve, the minimizing of owing to count, thereby the manufacture method of a kind of liquid crystal indicator that provides.
2, in the such scheme, arrange several same liquid crystal display cells picture on the described substrate simultaneously, each picture is arranged by matrix-style, after monoblock substrate gross area coating PI resin both alignment layers, removes earlier and is deposited in the PI resin both alignment layers part on the mucous membrane pattern position between each picture.Certainly arrange on a substrate that a liquid crystal display cells picture also is fine.
3, in the such scheme, above-mentioned on substrate gross area form the method for PI both alignment layers (glass Ya Mite resin), can adopt revolution to be coated with seal, cylinder and press and be coated with seal and otch is coated with impression method, and not necessarily will need only the alignment film that rolls on certain thickness at substrate surface with print process in the past.
4,, utilize atmospheric pressure state that continuous plasma takes place, with removing above-mentioned desired portion on nozzle or the slit irradiated substrate as a kind of method of optionally removing.The principle of removing alignment film is: by to only organism (Organicmaterial) the combination reaction thing cut-out by spike that is activated and alignment film through plasma irradiation back, resolve into gas.
Because the technique scheme utilization, the present invention compared with prior art has following advantage and effect:
1, the present invention adopts 1.5m
2The liquid crystal indicator that above substrate is made high reliability becomes possibility, can significantly enhance productivity like this.
2, to be made into liquid crystal indicator be that periphery with two substrates bonds with epoxy resin (Epoxy) glue and acrylic acid (Acryl) glue to liquid crystal display cells of the present invention.If in adhesive segment the PI both alignment layers is arranged, its bond effect is just poor, and two substrates just separate than being easier to.Add the moisture-penetrability (Permeability) because of the PI both alignment layers, the reliability of making liquid crystal display cells descends.Utilize method of the present invention, remove the PI both alignment layers of binding part, can make the liquid crystal indicator of high reliability.
3, on the portion of terminal of liquid crystal display cells of the present invention because the PI both alignment layers arranged, its insulativity makes that be electrically connected can't conducting.Utilize the present invention, remove the PI both alignment layers of this part after, make the possibility that is connected to become in itself and external electrical loop, can make good liquid crystal display picture.
Description of drawings
Accompanying drawing 1 is an orientation film removing apparatus plan structure synoptic diagram of the present invention.
In the above accompanying drawing: 1, head; 2, camera; 3, plasma generation nozzle; 4, conveyance platform; 5, laser type viameter; 6, alignment film forms substrate comprehensively.
Embodiment
Below in conjunction with drawings and Examples the present invention is further described:
Embodiment: a kind of manufacture method of liquid crystal indicator, form by six 30 inches pictures and to be of a size of 1500 * 1800mm
2The TFT substrate, this substrate relatively to be another colour film substrate, the liquid crystal layer resin column that this substrate has formed certain thickness from the teeth outwards is of a size of 1500 * 1800mm
2Behind these two substrate cleanings, with the be coated with seal of soluble glass Ya Mite (PI) resin material by duplicating and roll printing method gross area.Then behind 100 ℃ temperature drying, carried out sintering in 30 minutes through 190 ℃ again, make solubility PI solution evaporation, form the PI alignment film of 700A.
The orientation film removing apparatus as shown in Figure 1.Are equipped with on the head 1 and are used for reading the camera 2 that identifier is used on the substrate, and three diameters are nozzle 3a, 3b, the 3c that produces atmos plasma having of φ 1mm, the above-mentioned substrate 6 that has formed the PI alignment film by vacuum suction on carrying platform 4.Atmos plasma produces on nozzle 3a, 3b, the 3c laser type viameter 5a, 5b, 5c respectively is housed, and is used to guarantee the distance of atmos plasma generation nozzle in short transverse, and this distance is controlled in the definite accuracy.At first, camera 2 camera lenses read the identifier on the conveyance platform 4, and the coordinate axis of the X-direction on the conveyance platform 4, Y direction and θ sense of rotation is carried out revisal, to determine the action initial point of conveyance platform 4.Atmos plasma generation nozzle 3 is positioned in the top of corresponding perimeter bond agent (being referred to as the mucous membrane material) position.Adjustment is radiated on the mucous membrane material position plasma, and the X-axis of mobile conveyance platform 4 and Y-axis can be removed PI alignment film part on the desired mucous membrane pattern of removing with the speed of 100mm/sec.
Then, this substrate more further on the above-mentioned part that is removed alignment film, is retouched with spreader (Dispenser) and to be coated araldite after the friction orientation, and employing liquid crystal drip-injection method is with the inboard of liquid crystal configurations at the mucous membrane pattern.To relatively be fitted by two substrates forms again, and after each liquid crystal display cells that has a large-scale liquid crystal display of six 30 inches pictures is cut apart cut-out, sticks Polarizer, makes liquid crystal display cells.
The liquid crystal display cells that enforcement this programme is made has very high cohesive strength.The result who peels off test with the cutter thing is, also do not have at the interface of cementing agent (Adhesive) layer and substrate when separated, and substrate sheet material itself is fragmentation but.In addition, through 1000 hours, in 80 ℃ 90% the high temperature and humidity test, do not find mucous membrane material portion around unfavorable condition is arranged, therefore can make the liquid crystal display cells of high reliability.
With above-mentioned liquid crystal display cells, be placed on and be equipped with on the orientation film removing apparatus of single atmos plasma generation capitiform formula that diameter is φ 5mm.Dispenser nozzles on the portion of terminal of this liquid crystal display cells, Yi Bian taking place the isoionic while, thus drive the alignment film that conveyance platform 4 is removed on the portion of terminal.On this portion of terminal, carry again and stick the TAB glued membrane that the IC driving circuit is housed, make liquid crystal display cells carry and gone up external drive circuit.Further again, configuration is assembled into the liquid crystal indicator that has backlight, and when removing the alignment film of portion of terminal, plasma also makes the cleanliness of portion of terminal be improved, make that the then degree of itself and TAB glued membrane is better, the electric conductivity on electric has obtained tremendous raising.
Above-mentioned is explanation technical conceive of the present invention and characteristics, and purpose is to allow the personage who is familiar with this technology understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalences that spirit is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (4)
1, a kind of manufacture method of liquid crystal indicator is characterized in that comprising following manufacturing step:
(1), at area greater than 1.5m
2Substrate on, earlier, form PI resin both alignment layers through the sintering process dehydrating condensation then to substrate gross area coating PI resin material;
(2), adopt the method for plasma discharge partial cut, remove the PI resin both alignment layers part that is deposited on the mucous membrane pattern position;
(3), to the substrate orientation that rubs;
(4), on the above-mentioned mucous membrane pattern position that has been removed PI resin both alignment layers part, retouch and be coated with araldite;
(5), with liquid crystal configurations in the medial region of mucous membrane pattern, two substrates are fitted relatively becomes to have the large-scale liquid crystal display of some pictures again;
(6), each liquid crystal region cut apart cut-out after, stick Polarizer, make liquid crystal display cells;
(7), on the portion of terminal of each liquid crystal display cells, use in above-mentioned (2) step same method to remove and be deposited in this locational both alignment layers part respectively;
(8), again on this portion of terminal, carry and stick external drive circuit, and the configuration backlight is assembled into liquid crystal indicator.
2, according to the manufacture method of the described liquid crystal indicator of claim 1, it is characterized in that:, utilize atmospheric pressure state that continuous plasma takes place, with removing above-mentioned desired portion on nozzle or the slit irradiated substrate as a kind of method of optionally removing.
3, according to the manufacture method of the described liquid crystal indicator of claim 1, it is characterized in that: arrange several same liquid crystal display cells picture on the described substrate simultaneously, each picture is arranged by matrix-style, after monoblock substrate gross area coating PI resin both alignment layers, remove earlier and be deposited in the PI resin both alignment layers part on the mucous membrane pattern position between each picture.
4, according to the manufacture method of the described liquid crystal indicator of claim 1, it is characterized in that: describedly adopt revolution to be coated with seal, cylinder to substrate gross area coating PI resin both alignment layers to press to be coated with and print or otch is coated with the method for seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03113216 CN1199079C (en) | 2003-04-14 | 2003-04-14 | Manufacturing method of liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03113216 CN1199079C (en) | 2003-04-14 | 2003-04-14 | Manufacturing method of liquid crystal display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1442737A CN1442737A (en) | 2003-09-17 |
| CN1199079C true CN1199079C (en) | 2005-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03113216 Expired - Fee Related CN1199079C (en) | 2003-04-14 | 2003-04-14 | Manufacturing method of liquid crystal display device |
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| CN (1) | CN1199079C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102103291A (en) * | 2010-12-17 | 2011-06-22 | 深圳市华星光电技术有限公司 | Repair equipment of alignment film and repair method thereof |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012083542A1 (en) * | 2010-12-23 | 2012-06-28 | 深圳市华星光电技术有限公司 | Device for repairing alignment layer and method for repairing alignment layer |
| CN103499901A (en) * | 2013-10-16 | 2014-01-08 | 京东方科技集团股份有限公司 | Display panel manufacturing method, display panel and display device |
| CN105911735A (en) * | 2016-06-15 | 2016-08-31 | 苏州众显电子科技有限公司 | Manufacturing method of liquid crystal display device |
| CN108196402B (en) * | 2018-01-02 | 2020-12-01 | 京东方科技集团股份有限公司 | Method for coating alignment film |
| CN113467131B (en) * | 2021-06-28 | 2022-05-24 | 北海惠科光电技术有限公司 | Alignment film manufacturing method |
-
2003
- 2003-04-14 CN CN 03113216 patent/CN1199079C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102103291A (en) * | 2010-12-17 | 2011-06-22 | 深圳市华星光电技术有限公司 | Repair equipment of alignment film and repair method thereof |
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| Publication number | Publication date |
|---|---|
| CN1442737A (en) | 2003-09-17 |
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