CN104238203A - Display panel bubble removal method and display panel bubble removal device - Google Patents
Display panel bubble removal method and display panel bubble removal device Download PDFInfo
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- CN104238203A CN104238203A CN201410461393.6A CN201410461393A CN104238203A CN 104238203 A CN104238203 A CN 104238203A CN 201410461393 A CN201410461393 A CN 201410461393A CN 104238203 A CN104238203 A CN 104238203A
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Abstract
The invention provides a display panel bubble removal method and a display panel bubble removal device, which belong to the technical field of liquid crystal filling in display panels and can solve the problem that bubbles existing in conventional display panels cannot be removed. A display panel to which the display panel bubble removal method is applicable is filled with Liquid crystal, and is provided with openings communicating with the inside; the display panel bubble removal method includes the following specific steps: the display panel is rotated around an axis located outside the display panel, the gas in the display panel moves to the openings under the centrifugal effect, the openings of the display panel face the axis in the process of rotation, and the side which is opposite from the openings is far from the axis.
Description
Technical field
The invention belongs to display panel irrigation crystal technical field, be specifically related to a kind of display panel
Degasification method and device.
Background technology
The display panel of liquid crystal indicator forms primarily of mutual two substrates (as array base palte and color membrane substrates) to box, between two substrates, be filled with liquid crystal.The method adding liquid crystal in display panel has multiple, and one of them is vacuum irrigation crystal method (VIF).
As shown in Figure 1 to Figure 3, the basic process of vacuum irrigation crystal method is as follows:
S01, heating display panel 1 (as heated 1 hour at 110 DEG C), to remove the steam etc. of its inside.Wherein, as shown in Figure 1, display panel 1 is formed box by two pieces of substrates, and two substrates is linked together by the sealed plastic box being positioned at its edge part, thus the inside surface of two substrates and sealed plastic box surrounds the inner space of display panel 1, this inner space is namely for holding liquid crystal; Display panel 1 side is also provided with one or more opening 11 (also claiming " irrigation crystal mouth ") be communicated with inner space.
S02, add liquid crystal 9 in chamber (not shown) liquid crystal groove 8; As needs also can vacuumize chamber (as be evacuated to 0.5Pa and keep 5 ~ 10 minutes), to make liquid crystal 9 deaeration.
S03, display panel 1 is sent into chamber, and chamber is vacuumized (as being evacuated to 0.5Pa), thus make display panel 1 inside become vacuum state.
S04, as shown in Figure 2, inserts in the liquid crystal 9 in liquid crystal groove 8 downwards by the opening 11 of display panel 1, due to capillary action, liquid crystal 9 by opening 11 gradually by " suctions " display panel 1 inside; Wherein, for raising the efficiency, polylith display panel 1 can be formed a line, their opening 11 being inserted in liquid crystal groove 8 simultaneously.
S05, in chamber, be filled with nitrogen (as being charged to an atmospheric pressure), now display panel 1 inside does not have the part of liquid crystal 9 to be still vacuum, and due to pressure differential, its inner space can be filled up by " press-in " display panel 1 further by liquid crystal 9.
S06, display panel 1 to be taken out in chamber, block opening 11 with ultraviolet cured adhesive 111 (UV solidifies glue), and solidify to be closed by opening 11 by UV-irradiation to make ultraviolet cured adhesive 111, obtained the display panel 1 of irrigation crystal.
But, as shown in Figure 3, in vacuum irrigation crystal process, the factors such as vacuum tightness is not up to standard because liquid crystal 9 deaeration is insufficient, in chamber, the pumpdown time is too short, liquid crystal 9 quantity not sufficient in liquid crystal groove 8, sealed plastic box coating are bad, bubble 18 (or vacuum bubbles) may be there is in display panel 1 inside completing irrigation crystal; These bubbles 18 cannot remove, therefore have the display panel 1 of bubble 18 to scrap, and cause waste and cost.
Summary of the invention
Technical matters to be solved by this invention comprises, the problem that the bubble for existing display panel inside existence cannot remove, and provides a kind of the display panel degasification method and the device that remove the bubble of display panel inside.
The technical scheme that solution the technology of the present invention problem adopts is a kind of display panel degasification method, and its display panel inside be suitable for is filled with liquid crystal, and has the opening be communicated with inside; Described display panel degasification method comprises:
Step 1, the axis making described display panel edge be positioned at its outside rotate, and make the gas motion of display panel inside to opening part by centrifugation; In described rotary course, the opening of display panel is towards described axis, and the side relative with opening is away from described axis.
Preferably, described step 1 also comprises: vacuumize the environment at described display panel place.
Further preferably, the environment at described display panel place is vacuumized and comprises: when the gas motion in display panel inside to opening part or afterwards, start to vacuumize the environment at described display panel place.
Further preferably, the environment at described display panel place is vacuumized and comprises: after the gas motion in display panel inside to opening part, keep the vacuum environment 5 ~ 20 minutes vacuumizing gained.
Further preferably, vacuumize in the process of the vacuum environment of gained in maintenance, make described display panel continue to rotate.
Preferably, after described step 1, also comprise: step 2, described display panel is stopped the rotation, the opening part to described display panel drips liquid crystal, makes described liquid crystal enter display panel inside by opening.
Further preferably, the axis in described step 1 is vertically arranged; In described step 2, also comprised before dripping liquid crystal to the opening part of described display panel: rotate described display panel, make the opening up of described display panel.
Further preferably, in described step 2, also comprise after dripping liquid crystal to the opening part of described display panel: display panel is left standstill 2 ~ 3 hours.
Preferably, in described step 1, described rotational speed is between 400 ~ 2000 revs/min; Rotational time before the gas motion of described display panel inside to opening part was at 5 ~ 30 minutes; Distance between the opening of described display panel and described axis is more than or equal to 15 centimetres.
The technical scheme that solution the technology of the present invention problem adopts is a kind of display panel depassing unit, and it comprises:
For the centrifugal unit rotated along axis, described centrifugal unit comprises supporting mechanism, and supporting mechanism is used for supporting display panel towards described axis, the side relative with opening away from the mode of described axis with opening.
Preferably, described display panel depassing unit also comprises: chamber, and described centrifugal unit is located in described chamber; Vacuum unit, for vacuumizing described chamber.
Preferably, described display panel depassing unit also comprises: drip unit, drips liquid crystal for the opening part to described display panel.
Further preferably, the axis of described centrifugal unit is vertically arranged; Described centrifugal unit also comprises rotating mechanism, for display panel is turned to opening up state.
In display panel degasification method of the present invention and device, make bubble motion in display panel to opening part by centrifugation, and discharged by opening, thus make originally to need the display panel scrapped to become specification product, reduce costs and reduce waste; Meanwhile, for the display panel of leaving no air bubbles inside, the present invention also can discharge minimum gas wherein (as the gas be dissolved in liquid crystal, because its amount is less therefore do not form bubble) further, thus improves display quality.
Accompanying drawing explanation
Fig. 1 is the perspective view of vacuum irrigation crystal method;
Fig. 2 is the cross-sectional view of vacuum irrigation crystal method;
Fig. 3 is the plan structure schematic diagram of the alveolate display panel of tool after irrigation crystal completes;
Fig. 4 is the structural representation of a kind of display panel depassing unit of embodiment of the present invention when rotating;
Fig. 5 is the principle schematic of display panel degasification method by centrifugation degasification of the embodiment of the present invention;
Structural representation when Fig. 6 is a kind of display panel depassing unit dropping liquid crystal of the embodiment of the present invention;
Fig. 7 is the plan structure schematic diagram of the bubble-free display panel after the display panel degasification method degasification of the embodiment of the present invention;
Wherein, Reference numeral is: 1, display panel; 11, opening; 111, ultraviolet cured adhesive; 18, bubble; 31, cylindrical body; 32, support; 33, rot; 5, axis; 61, head is dripped; 62, guide rail; 63, runner; 7, chamber; 71, bleeding point; 72, inflation inlet; 8, liquid crystal groove; 9, liquid crystal.
Embodiment
For making those skilled in the art understand technical scheme of the present invention better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Embodiment:
As shown in Figures 4 to 7, the present embodiment provides a kind of display panel degasification method and device.
Wherein, as the display panel of degasification object, its inside (space namely surrounded by two substrates and sealed plastic box inside surface) is filled with liquid crystal 9, and has the opening 11 be communicated with inside.
That is, the present invention is applicable to remove the excessive gas completed in the display panel 1 of irrigation crystal; But now, display panel 1 still has opening 11 that be communicated with inside, that be not yet closed as exhaust passage.
Wherein, display panel 1 is preferably past the display panel 1 of vacuum irrigation crystal, because the situation that there is bubble 18 in the display panel 1 of this method production is more.But obviously, if display panel 1 liquid crystal drips additive method irrigation crystals such as (ODF) in advance, also can carry out degasification with method and apparatus of the present invention, just will set up opening 11 in display panel 1.
Meanwhile, the present invention is preferred for the display panel 1 that there is bubble 18 inside, to eliminate bubble 18.But obviously, the present invention also can be used for the inner display panel 1 without obvious bubble 18, to be discharged further by a small amount of gas be dissolved in liquid crystal 9.
In addition, before degasification, also can first detect display panel 1, if it exists, sealed plastic box coating is bad waits gas leakage factor, then can first be repaired gas leakage factor by modes such as coating sealed plastic boxs, degasification more afterwards.
Concrete, introduce display panel degasification method below, the method can draw together following steps:
S101, display panel 1 is rotated along the axis 5 being positioned at its outside, make the gas motion of display panel 1 inside to opening 11 place by centrifugation, in rotary course, the opening 11 of display panel 1 is towards axis 5, and the side relative with opening 11 is then away from axis 5.
That is, as shown in Figure 4, make display panel 1 have the side of opening 11 near axis 5, and the side relative with opening 11 is away from axis 5, makes display panel 1 start to rotate (namely centrifugal) around axis 5 afterwards.Like this, in rotary course, as shown in Figure 5, because liquid crystal 9 is subject to centrifugal action, therefore can to the lateral movement of display panel 1 away from axis 5; Accordingly, bubble 18 is gas, and quality is light, and the centrifugal force be subject to is little, therefore the liquid crystal 9 of meeting passive movement squeezes, thus to the lateral movement near axis 5 (namely opening 11), and finally move to opening 11 place.
Visible, centrifugal by display panel 1, the gas motion of its inside can be made to opening 11 place and be discharged, thus achieve degasification, originally the display panel 1 having bubble 18 to scrap can be re-used, cut the waste and reduce costs, and the original gas be dissolved on a small quantity in liquid crystal 9 is discharged, improve display quality.
Obviously, for increasing centrifugal force, therefore display panel 1 is preferably arranged along the radial direction of this axis 5, namely points to the direction of side, opening 11 place perpendicular to axis 5 and through axis 5 by display panel 1 away from opening 11 side.
Wherein, for preventing gravity from having an impact to centrifugal, therefore axis 5 is preferably vertically arranged, thus the opening 11 of display panel 1 is towards horizontal direction.
Preferably, the speed of above-mentioned rotation is between 400 ~ 2000 revs/min; The gas motion of the display panel 1 inside rotational time to opening 11 place was at 5 ~ 30 minutes; Distance between the opening 11 of display panel 1 and axis 5 is more than or equal to 15 centimetres.
Find through research, when the distance when between the opening 11 and axis 5 of display panel 1 is more than or equal to 15 centimetres, larger centrifugal force can be kept; The rotational speed of above-mentioned 400 ~ 2000 revs/min can meet requirement of the present invention, thus within the time of above-mentioned 5 ~ 30 minutes, makes the gas motion of display panel 1 inside to opening 11 place.
S102, preferred, vacuumize the environment at display panel 1 place, it preferably can be: when the gas motion in display panel 1 inside to opening 11 place or afterwards, starts to vacuumize the environment at display panel 1 place.
Obviously, when the gas motion of display panel 1 inside is to opening 11 place, if its external environment condition is vacuum, be then more conducive to oozing out of dissolved gas in the discharge of gas and liquid crystal 9.Therefore, preferably can vacuumize the environment at display panel 1 place (chamber 7 as display panel 1 place), its vacuum tightness usually can at about 0.5 ~ 10Pa.
Wherein, when gas motion why in display panel 1 inside to opening 11 place or just start afterwards to vacuumize, if be because just vacuumized before opening 11 place at gas motion, then the pressure of display panel 1 internal gas can be larger than ambient pressure, thus the power " pushed away " to opening 11 place by liquid crystal 9 can be produced, be unfavorable for centrifugal.Certainly, if before gas motion to opening 11 place (as start rotate before) just start to vacuumize, be also feasible.
S103, preferred further, after the gas motion in display panel 1 inside to opening 11 place, keep vacuumizing the vacuum environment 5 ~ 20 minutes of gained.
That is, after gas motion to opening 11 place, above-mentioned vacuum environment is kept a period of time, thus the gas of display panel 1 inside can fully be discharged.
Preferred further, in this step, make display panel 1 continue to rotate.
That is, in above-mentioned keep-process, preferably make display panel 1 keep rotation status, thus it is inner to prevent gas from reentering display panel 1.
S104, preferred, stop the rotation, opening 11 place to display panel 1 drips liquid crystal 9, makes liquid crystal 9 enter display panel 1 by opening 11 inner.
Obviously, when the gas flow of discharging from display panel 1 is larger, then wherein remaining liquid crystal 9 amount will be not enough, so in time, needs to supplement liquid crystal 9 in display panel 1, namely drip liquid crystal 9 to its opening 11 place, concrete dripping quantity can set according to the gas flow of discharging, as long as several usually.Certainly, if when the gas flow of discharging from display panel 1 is very little, then it is also feasible for not carrying out this step.
Preferably, when above-mentioned axis 5 is vertically arranged, before dropping liquid crystal 9, also can comprise: as shown in Figure 6, rotate display panel 1, make the opening 11 of display panel 1 upward.
As previously mentioned, the opening 11 of display panel 1 preferably towards horizontal direction, so time to drip the process difficult operation of liquid crystal 9 to opening 11 place, therefore can first display panel 1 be rotated to opening 11 upward, then to drip.
S105, preferred further, display panel 1 is left standstill 2 ~ 3 hours.
That is, after dropping liquid crystal 9, display panel 1 can be left standstill 2 ~ 3 hours, thus it is inner to make liquid crystal 9 enter display panel 1 completely by capillary action, and the liquid crystal 9 of display panel 1 inside is more evenly distributed.
S106, optional, be filled with an atmospheric nitrogen to display panel 1 place environment, liquid crystal 9 is evenly distributed further.
That is, again improve the air pressure of display panel 1 place environment, further liquid crystal 9 is pressed into display panel 1 by pressure effect inner.Certainly, this step is optional, if Directly solution is except the vacuum (as being filled with air) of display panel 1 place environment, is also feasible.
S107, by ultraviolet cured adhesive 111 etc., the opening 11 of display panel 1 to be closed, as shown in Figure 7, obtain the display panel 1 that degasification completes.
That is, by any means known, opening 11 is closed, obtain display panel 1 product that can normally use.
Introduce display panel depassing unit below, this device can be used for performing above-mentioned display panel degasification method.Certainly, above-mentioned display panel degasification method is not limited to carry out in this device.
Shown in the structural drawing 4 of display panel depassing unit, Fig. 6, in Fig. 4, Fig. 6, be the structure of clear expression display panel depassing unit, therefore wherein part-structure has done transparent processing.
Concrete, display panel depassing unit comprises:
For the centrifugal unit rotated along axis 5, centrifugal unit comprises supporting mechanism, and supporting mechanism is used for supporting display panel 1 towards axis 5, the side relative with opening 11 away from the mode of axis 5 with opening 11.
Concrete, a rotation axis (not shown) can be set along above-mentioned axis 5, and a cylindrical body 31 is installed on the rotating shaft (central shaft of cylindrical body 31 overlaps with axis 5), and be provided with support 32 in cylindrical body 31 as supporting mechanism, and its supporting way meets above requirement.When rotation axis rotates, cylindrical body 31 rotates thereupon, and the display panel 1 in cylindrical body 31 can be driven to carry out centrifugal.
Certainly, for improving degassing efficiency, therefore multiple supporting mechanism can be provided with in a centrifugal unit, to carry out degasification to multiple display panel 1 simultaneously.
Preferably, this display panel depassing unit also can comprise:
Chamber 7, centrifugal unit is located in chamber 7;
Vacuum unit, for vacuumizing chamber 7.
That is, above-mentioned centrifugal unit can be located in chamber 7, and chamber 7 connects vacuum unit (as vacuum pump, not shown) by bleeding point 71, thus can realize the above-mentioned function vacuumized.
Preferably, this display panel depassing unit also comprises:
Drip unit, drip liquid crystal 9 for opening 11 place to display panel 1.
That is, can arrange at chamber 7 end face and drip 61 etc., to drip liquid crystal 9 to opening 11 place of display panel 1.
Preferably, drip unit and can comprise for driving the cephalomotor driving mechanism of dropping, thus dropping unit can be dripped the display panel 1 being positioned at diverse location.Concrete, driving mechanism can comprise the guide rail 62 being located at chamber 7 top, and drip 61 upper end and be rotationally connected with in runner 63 (not shown) that is located in guide rail 62, by the rotation of runner 63, can be with and logically drip 61 and move along guide rail 62.
Certainly, if do not have driving mechanism, dripping cell position and fix, but moved to by display panel 1 to realize dripping below dropping unit, is also feasible.
Preferably, when the axis 5 of centrifugal unit is vertically arranged, then centrifugal unit also can comprise rotating mechanism, for display panel 1 is turned to opening 11 state upward.
As previously mentioned, when rotating, the opening 11 of display panel 1 is preferably towards horizontal direction, and inconvenience drips like this.Therefore, can rotating mechanism be set, so that display panel 1 is turned to opening 11 state upward, to drip.Concrete, rotating mechanism can be rot 33, and rot 33 is connected on cylindrical body 31 inwall, support 32 1 jiaos of connection of rotating devices 33, thus by the rotation of rot 33, the opening 11 that can change display panel 1 towards.
Certainly, be to be understood that, centrifugal unit described above (supporting mechanism, rotating mechanism), drip a concrete form (as cylindrical body 31, support 32, rot 33, drip 61, guide rail 62, runner 63 etc.) of unit (driving mechanism) etc., be all exemplary example, instead of the restriction to concrete structure of the present invention.As long as the basic function of each parts can be realized, those skilled in the art also can select other known structure as the concrete form of each parts as required, such as, supporting mechanism also can be draw-in groove etc., rotating mechanism also can be the cylinder etc. being connected to support 31 bottom end, and driving mechanism also can be mechanical arm etc.
Meanwhile, also can comprising other conventional structure in display panel depassing unit, such as, chamber 7 also can being provided with inflation inlet 72, for being filled with nitrogen or air etc.
Be understandable that, the illustrative embodiments that above embodiment is only used to principle of the present invention is described and adopts, but the present invention is not limited thereto.For those skilled in the art, without departing from the spirit and substance in the present invention, can make various modification and improvement, these modification and improvement are also considered as protection scope of the present invention.
Claims (13)
1. a display panel degasification method, described display panel inside is filled with liquid crystal, and has the opening be communicated with inside, it is characterized in that, described display panel degasification method comprises:
Step 1, the axis making described display panel edge be positioned at its outside rotate, and make the gas motion of display panel inside to opening part by centrifugation; In described rotary course, the opening of display panel is towards described axis, and the side relative with opening is away from described axis.
2. display panel degasification method according to claim 1, is characterized in that, described step 1 also comprises:
The environment at described display panel place is vacuumized.
3. display panel degasification method according to claim 2, is characterized in that, vacuumizes comprise the environment at described display panel place:
When gas motion in display panel inside to opening part or afterwards, start to vacuumize the environment at described display panel place.
4. display panel degasification method according to claim 2, is characterized in that, vacuumizes comprise the environment at described display panel place:
After gas motion in display panel inside to opening part, keep the vacuum environment 5 ~ 20 minutes vacuumizing gained.
5. display panel degasification method according to claim 4, is characterized in that,
Vacuumize in the process of the vacuum environment of gained in maintenance, make described display panel continue to rotate.
6. display panel degasification method according to claim 1, is characterized in that, after described step 1, also comprises:
Step 2, described display panel is stopped the rotation, the opening part to described display panel drips liquid crystal, makes described liquid crystal enter display panel inside by opening.
7. display panel degasification method according to claim 6, is characterized in that,
Axis in described step 1 is vertically arranged;
In described step 2, also comprised before dripping liquid crystal to the opening part of described display panel: rotate described display panel, make the opening up of described display panel.
8. display panel degasification method according to claim 6, is characterized in that, in described step 2, also comprises after dripping liquid crystal to the opening part of described display panel:
Display panel is left standstill 2 ~ 3 hours.
9. display panel degasification method as claimed in any of claims 1 to 8, is characterized in that, in described step 1,
Described rotational speed is between 400 ~ 2000 revs/min;
Rotational time before the gas motion of described display panel inside to opening part was at 5 ~ 30 minutes;
Distance between the opening of described display panel and described axis is more than or equal to 15 centimetres.
10. a display panel depassing unit, is characterized in that, comprising:
For the centrifugal unit rotated along axis, described centrifugal unit comprises supporting mechanism, and supporting mechanism is used for supporting display panel towards described axis, the side relative with opening away from the mode of described axis with opening.
11. display panel depassing units according to claim 10, is characterized in that, also comprise:
Chamber, described centrifugal unit is located in described chamber;
Vacuum unit, for vacuumizing described chamber.
12. display panel depassing units according to claim 10, is characterized in that, also comprise:
Drip unit, drip liquid crystal for the opening part to described display panel.
13. display panel depassing units according to claim 12, is characterized in that,
The axis of described centrifugal unit is vertically arranged;
Described centrifugal unit also comprises rotating mechanism, for display panel is turned to opening up state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410461393.6A CN104238203A (en) | 2014-09-11 | 2014-09-11 | Display panel bubble removal method and display panel bubble removal device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410461393.6A CN104238203A (en) | 2014-09-11 | 2014-09-11 | Display panel bubble removal method and display panel bubble removal device |
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| CN104238203A true CN104238203A (en) | 2014-12-24 |
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| CN201410461393.6A Pending CN104238203A (en) | 2014-09-11 | 2014-09-11 | Display panel bubble removal method and display panel bubble removal device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107329294A (en) * | 2017-08-24 | 2017-11-07 | 武汉华星光电半导体显示技术有限公司 | Defoaming device |
| CN108051958A (en) * | 2017-10-10 | 2018-05-18 | 深圳市国华光电科技有限公司 | A kind of crystal-pouring machine and its irrigation crystal method |
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