CN102478729A - Method for manufacturing liquid crystal boxes - Google Patents
Method for manufacturing liquid crystal boxes Download PDFInfo
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- CN102478729A CN102478729A CN201010574987XA CN201010574987A CN102478729A CN 102478729 A CN102478729 A CN 102478729A CN 201010574987X A CN201010574987X A CN 201010574987XA CN 201010574987 A CN201010574987 A CN 201010574987A CN 102478729 A CN102478729 A CN 102478729A
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Abstract
The invention discloses a method for manufacturing liquid crystal boxes. The method comprises the following steps: carrying out silk printing and procuring on a color film substrate, so as to obtain an upper plate of a liquid crystal box; carrying out silk printing and procuring on ITO (indium tin oxide glass) and spraying a lining material on the ITO, so as to obtain a lower plate of the liquid crystal box; aligning and fitting the upper plate and the lower plate to combine the liquid crystal box, and prepressing the liquid crystal box; and simultaneously hot-pressing multiple liquid crystal boxes at high temperature, wherein the hot-pressing comprises a first hot-pressing stage and a second hot-pressing stage; the temperature range of the first hot-pressing stage is 180-220 DEG C, and the heating time is 15-40 minutes; and the temperature range of the second hot-pressing is 155-195 DEG C, and the heating time is 30-60 minutes. According to the method for manufacturing the liquid crystal boxes provided by the invention, the hot-pressing time is shortened, the adsorption force between the lining material and the ITO substrate is enhanced, thus improving the stability of the thickness of the liquid crystal boxes.
Description
Technical field
The present invention relates to a kind of manufacturing process of LCD, especially relate to a kind of manufacturing approach of liquid crystal cell.
Background technology
System box technology is LCD (Liquid Crystal Display, LCD) one of the most key technology.The liquid crystal cell of LCD is to be made up of two sheet glass substrates, and the gap (being that box is thick) between wherein is generally 5～9um.In order to keep the homogeneity of thickness of liquid crystal box, filled wadding between two substrates.For the encapsulated liquid crystals box, have seal, sealing materials that liquid crystal cell is sealed around the glass substrate simultaneously, SI ball that adds in the seal, sealing materials (silicon ball) and AU ball (gold goal) also play the thick effect of liner box.
The hot pressing temperature curve that uses in traditional heat pressing process is as shown in Figure 5, and wherein I ' representes the phase one temperature curve, and the temperature of phase one is set to 80 ℃, 60 minutes; II ' expression subordinate phase temperature curve, temperature is set to 175 ℃, 135 minutes.As can be seen from Figure 5, product temperature reaches 150 ℃ in the time of about 140 minutes, and temperature will remain on more than 150 ℃ about about 55 minutes this moment.
Summary of the invention
The present invention is based on the discovery of inventor to the following fact: the liquid crystal cell of LCD is in hot pressing the time; The processing material on the wadding a ' surface in the liquid crystal cell can melt because of HTHP and is a sucker c ' that ability fixed-bearing material level is put, and is as shown in Figure 6.After product was by the overlong time of hot pressing, melted on wadding a ' surface and the sucker c ' that forms can continue to melt to flow, thereby the absorption affinity between wadding a ' and the glass substrate b ' is weakened.Therefore; In the manufacturing process of LCD module (LCM-Liquid Crystal Module); Especially integrated circuit overlays (COG-chipon glass), flexible PCB and overlays in (FOG-Flexible printed circuits board On Glass), paster (PolarizerAssembly) and the final assembling process; Actions such as LCD can receive all that equipment and artificial squeezes, suction and pressure, wadding moves with respect to glass substrate easily, causes the thick change of wadding habitat box big thus; And thick the diminishing of ground square box that wadding reduces; Thereby make script thick the changing of box of liquid crystal cell uniformly, the stability that box is thick will be affected, and then influence the performance of LCD.
For this reason, one object of the present invention is to propose a kind of manufacturing approach of liquid crystal cell of the thick stability of box that improves liquid crystal cell.
Manufacturing approach according to the liquid crystal cell of the embodiment of the invention may further comprise the steps:
(1) color membrane substrates is carried out silk-screen and precuring, process the upper plate of liquid crystal cell;
(2) ito glass is carried out silk-screen, precuring and sprays wadding, process the lower plate of liquid crystal cell;
(3) upper plate and lower plate being carried out contraposition through seal, sealing materials is sticked to form liquid crystal cell and carries out precompressed; With
(4) a plurality of liquid crystal cells are carried out hot pressing simultaneously so that seal, sealing materials solidifies and make the liquid crystal cell box thick evenly,
Said hot pressing comprises the first hot pressing stage and the second hot pressing stage, and wherein: the temperature range in the first hot pressing stage is 180 ℃-220 ℃, and be 15-40 minute heat time heating time; The temperature range in the second hot pressing stage is 155 ℃-195 ℃, and be 30-60 minute heat time heating time.
Manufacturing approach according to the liquid crystal cell of the embodiment of the invention; Shortened hot pressing time; Make that the sucker that forms between processing material and the ito glass substrate on wadding surface can be owing to ultra-long time continues thawing under HTHP; Thereby strengthened the absorption affinity between wadding and the ito glass substrate, wadding can not moved with respect to ito glass substrate, thereby improved the thick stability of box of liquid crystal cell.
Additional aspect of the present invention and advantage part in the following description provide, and part will become obviously from the following description, or recognize through practice of the present invention.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage obviously with are easily understood becoming the description of embodiment from combining figs, wherein:
Fig. 1 is the schematic flow sheet according to the manufacturing approach of the liquid crystal cell of the embodiment of the invention;
Fig. 2 is the hot pressing temperature curve according to the manufacturing approach of the liquid crystal cell of the embodiment of the invention;
Fig. 3 is the hot pressing synoptic diagram of execution according to the hot press of the manufacturing approach of the liquid crystal cell of the embodiment of the invention;
Fig. 4 is the liquid crystal cell sucker synoptic diagram that wadding melts in hot pressing that the manufacturing approach of liquid crystal cell is according to an embodiment of the invention made;
Fig. 5 is the hot pressing temperature curve in the traditional hot compression technology; And
Fig. 6 is the liquid crystal cell sucker synoptic diagram that wadding melts in hot pressing that the traditional hot compression technology is made.
Embodiment
Describe embodiments of the invention below in detail, the example of said embodiment is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions.Be exemplary through the embodiment that is described with reference to the drawings below, only be used to explain the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention; Term " interior ", " outward ", " on ", the orientation of indications such as D score, " top ", " end " or position relation be for based on orientation shown in the drawings or position relation; Only be for the ease of describing the present invention rather than requiring the present invention therefore can not be interpreted as limitation of the present invention with specific azimuth configuration and operation.
Following with reference to the manufacturing approach of figure 1-Fig. 4 description according to a kind of liquid crystal cell of the embodiment of the invention.
Manufacturing approach according to the liquid crystal cell of the embodiment of the invention may further comprise the steps:
(1) color membrane substrates is carried out silk-screen and precuring, process the upper plate of liquid crystal cell;
(2) ito glass is carried out silk-screen, precuring and sprays wadding, process the lower plate of liquid crystal cell;
(3) upper plate and lower plate being carried out contraposition through seal, sealing materials is sticked to form liquid crystal cell and carries out precompressed.With
(4) a plurality of liquid crystal cells are carried out hot pressing simultaneously so that seal, sealing materials solidifies and make the liquid crystal cell box thick evenly.
Wherein, the manufacturing process in above-mentioned step (1)-(3) all is well known to those skilled in the art, and in description of the invention, will no longer narrate.It should be noted that in an embodiment of the present invention wadding is set to make the thickness (promptly going up the summation of the spacer thickness between plate thickness, following plate thickness and the upper and lower plates) of each liquid crystal cell to be 1.0mm-1.1mm.
The technical scheme of step (4) below emphasis is described:
Hot pressing in the step (4) comprises the first hot pressing stage and the second hot pressing stage, and wherein: the temperature range in the first hot pressing stage is 180 ℃-220 ℃, and be 15-40 minute heat time heating time; The temperature range in the second hot pressing stage is 155 ℃-195 ℃, and be 30-60 minute heat time heating time.Thus; To no longer follow the requirement slow, the subordinate phase quick heating that heats up of phase one in the traditional hot compression technology according to hot pressing of the present invention; But the method that utilization is rapidly heated makes liquid crystal cell reach the for example solidification temperature of epoxy resin sealant (about 150 ℃) of its seal, sealing materials at short notice.The inventor obtains through the infrared microscopy assay in test: product is reaching more than 150 ℃ and was stopping 15 minutes, and epoxy resin sealant has promptly reached solidifying requirements.
Manufacturing approach according to the liquid crystal cell of the embodiment of the invention; Shortened hot pressing time; Make that the sucker c that forms between processing material and the ito glass substrate b on wadding a surface can be owing to ultra-long time continues thawing (as shown in Figure 4) under HTHP; Thereby strengthened the absorption affinity between wadding a and the ito glass substrate b, wadding a can not moved with respect to ito glass substrate b, and then improved the thick stability of box of liquid crystal cell.
In one embodiment of the invention, hot pressing can be provided with as follows: as shown in Figure 2, I representes the first hot pressing phase temperature curve, and the temperature in the first hot pressing stage is set to 200 ℃, and be 20 minutes heat time heating time; II is the second hot pressing phase temperature curve, and the temperature in the second hot pressing stage is set to 175 ℃, and be 40 minutes heat time heating time.Through this hot pressing temperature and heat time heating time are set, can make the absorption affinity between liquid crystal cell liner bedding and padding and the ito glass substrate relatively large, thereby make the thick stability of box of liquid crystal cell higher relatively.
In addition, the liquid crystal cell that at every turn carries out hot pressing in the traditional hot compression technology simultaneously is approximately about 33mm, and even the thickness of liquid crystal cell is 1.0-1.1mm, and the quantity of then carrying out the liquid crystal cell of hot pressing simultaneously is about 30.Like this; The temperature and pressure that each liquid crystal cell obtains in hot pressing is inhomogeneous; Promptly higher near the temperature of the liquid crystal cell in thermal pressure source, pressure is bigger; And lower away from the temperature of the liquid crystal cell in thermal pressure source, pressure is less, the box of the liquid crystal cell after same thus batch hot-forming is thick inconsistent, and quality is uneven.
Therefore, in another embodiment of the present invention, step further comprises in (4): the gross thickness of a plurality of liquid crystal cells is 9-15mm.That is to say, with the quantity of the liquid crystal cell that carries out hot pressing simultaneously compare with the quantity (about 30) in the traditional heat pressing process reduced about 2/3rds, and when the thickness of each liquid crystal cell be 1.0mm-1.During 1mm, the quantity of carrying out the liquid crystal cell of hot pressing simultaneously can be 9-15.
According to the manufacturing approach of the liquid crystal cell of the embodiment of the invention, the quantity of the liquid crystal cell through reducing hot pressing simultaneously can make the temperature and pressure of each liquid crystal cell in hot pressing more even, is more conducive to improve the thick stability of liquid crystal cell box.
In one of them example of the present invention, the gross thickness of a plurality of liquid crystal cells can be 10-11mm.
Particularly, above-mentioned heat pressing process is carried out through hot press.As shown in Figure 3, the synoptic diagram when showing hot press and carrying out hot pressing.This hot press comprises hot pressing anchor clamps 1 and the hot pressing air bag skin 3 that is used to add hot pressing, and wherein hot pressing anchor clamps 1 are double-deck anchor clamps, and a plurality of liquid crystal cells 2 bed hedgehoppings that 10-11mm is thick cause hot pressing insufficient to the height that is fit to hot pressing air bag skin 3 to remedy highly not enough.
Manufacturing approach according to the liquid crystal cell of the embodiment of the invention; The time of whole heat pressing process has been shortened to 45-100 minute from traditional 195 minutes; And reduced the thickness and the quantity of carrying out a plurality of liquid crystal cells of hot pressing simultaneously, improved the thick stability of box of the liquid crystal cell after the moulding greatly.
In the description of this instructions, the description of reference term " embodiment ", " some embodiment ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means the concrete characteristic, structure, material or the characteristics that combine this embodiment or example to describe and is contained at least one embodiment of the present invention or the example.In this manual, the schematic statement to above-mentioned term not necessarily refers to identical embodiment or example.And concrete characteristic, structure, material or the characteristics of description can combine with suitable manner in any one or more embodiment or example.
Although illustrated and described embodiments of the invention; Those having ordinary skill in the art will appreciate that: under the situation that does not break away from principle of the present invention and aim, can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is limited claim and equivalent thereof.
Claims (6)
1. the manufacturing approach of a liquid crystal cell is characterized in that, may further comprise the steps:
(1) color membrane substrates is carried out silk-screen and precuring, process the upper plate of liquid crystal cell;
(2) ito glass is carried out silk-screen, precuring and sprays wadding, process the lower plate of liquid crystal cell;
(3) upper plate and lower plate being carried out contraposition through seal, sealing materials is sticked to form liquid crystal cell and carries out precompressed; With
(4) a plurality of liquid crystal cells are carried out hot pressing simultaneously so that seal, sealing materials solidifies and make the liquid crystal cell box thick evenly,
Said hot pressing comprises the first hot pressing stage and the second hot pressing stage, wherein:
The temperature range in the first hot pressing stage is 180 ℃-220 ℃, and be 15-40 minute heat time heating time;
The temperature range in the second hot pressing stage is 155 ℃-195 ℃, and be 30-60 minute heat time heating time.
2. the manufacturing approach of liquid crystal cell according to claim 1 is characterized in that,
The temperature in the said first hot pressing stage is 200 ℃, and be 20 minutes heat time heating time; With
The temperature in the said second hot pressing stage is 175 ℃, and be 40 minutes heat time heating time.
3. the manufacturing approach of liquid crystal cell according to claim 1 is characterized in that, step further comprises in (4):
The gross thickness of said a plurality of liquid crystal cells is 9-15mm.
4. the manufacturing approach of liquid crystal cell according to claim 3 is characterized in that, the gross thickness of said a plurality of liquid crystal cells is 10-11mm.
5. the manufacturing approach of liquid crystal cell according to claim 4 is characterized in that, it is 1.0mm-1.1mm that said wadding is set to make the thickness of each liquid crystal cell.
6. the manufacturing approach of liquid crystal cell according to claim 1 is characterized in that, said seal, sealing materials is an epoxy resin sealant.
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| CN201010574987.XA CN102478729B (en) | 2010-11-26 | 2010-11-26 | The manufacture method of liquid crystal cell |
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| CN201010574987.XA CN102478729B (en) | 2010-11-26 | 2010-11-26 | The manufacture method of liquid crystal cell |
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| CN102478729A true CN102478729A (en) | 2012-05-30 |
| CN102478729B CN102478729B (en) | 2016-03-09 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1797075A (en) * | 2004-12-21 | 2006-07-05 | 比亚迪股份有限公司 | Liquid crystal display capable of preventing short circuit of electric gold ball, and preparation method |
| CN101470292A (en) * | 2007-12-25 | 2009-07-01 | 比亚迪股份有限公司 | Control method for bad voltage of LCD |
| CN101592828A (en) * | 2008-05-28 | 2009-12-02 | 比亚迪股份有限公司 | The LCD manufacture method |
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2010
- 2010-11-26 CN CN201010574987.XA patent/CN102478729B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1797075A (en) * | 2004-12-21 | 2006-07-05 | 比亚迪股份有限公司 | Liquid crystal display capable of preventing short circuit of electric gold ball, and preparation method |
| CN101470292A (en) * | 2007-12-25 | 2009-07-01 | 比亚迪股份有限公司 | Control method for bad voltage of LCD |
| CN101592828A (en) * | 2008-05-28 | 2009-12-02 | 比亚迪股份有限公司 | The LCD manufacture method |
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| CN102478729B (en) | 2016-03-09 |
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Effective date of registration: 20150915 Address after: 518119 Guangdong province Shenzhen City Dapeng new Kwai town Yanan Road No. 1 building experimental Byd Co Applicant after: Shenzhen BYD Electronic Component Co., Ltd. Address before: BYD 518118 Shenzhen Road, Guangdong province Pingshan New District No. 3009 Applicant before: Biyadi Co., Ltd. |
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Address after: 518119 Guangdong province Shenzhen City Dapeng new Kwai town Yanan Road No. 1 building experimental Byd Co Patentee after: Shenzhen helitai photoelectric Co., Ltd Address before: 518119 Guangdong province Shenzhen City Dapeng new Kwai town Yanan Road No. 1 building experimental Byd Co Patentee before: SHENZHEN BYD ELECTRONIC COMPONENT Co.,Ltd. |