CN105785669A - Liquid crystal coating device - Google Patents
Liquid crystal coating device Download PDFInfo
- Publication number
- CN105785669A CN105785669A CN201610338736.9A CN201610338736A CN105785669A CN 105785669 A CN105785669 A CN 105785669A CN 201610338736 A CN201610338736 A CN 201610338736A CN 105785669 A CN105785669 A CN 105785669A
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- water dropper
- coating apparatus
- crystal water
- coating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 153
- 239000011248 coating agent Substances 0.000 title claims abstract description 51
- 238000000576 coating method Methods 0.000 title claims abstract description 51
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 53
- 239000000463 material Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000004904 shortening Methods 0.000 abstract description 5
- 239000000758 substrate Substances 0.000 description 19
- 239000007788 liquid Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000013078 crystal Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000012780 transparent material Substances 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1341—Filling or closing of cells
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1341—Filling or closing of cells
- G02F1/13415—Drop filling process
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
Abstract
The invention relates to a liquid crystal coating device. The liquid crystal coating device comprises a plurality of liquid crystal drippers which are densely arrayed, wherein the diameter of a flow guide pipe through which a liquid crystal flows in each liquid crystal dripper is increased on a liquid crystal flowing-out side; and each liquid crystal dripper is provided with a heating device for heating the flowing liquid crystal to control the temperature of the flowing liquid crystal. The liquid crystal coating device provided by the invention can realize a manner of coating the liquid crystal in a plane, and a Drop mura bad condition can be avoided; the dripping speed of a single liquid crystal is improved; and the liquid crystal coating device is very helpful for improving the yield of products, shortening the manufacturing time of the products and improving the competitiveness of the products.
Description
Technical field
The present invention relates to technical field of liquid crystal display, particularly relate to a kind of liquid crystal coating apparatus.
Background technology
The making of TFT (thin film transistor (TFT)) display device is extremely complex, need to make through array base palte, color membrane substrates makes, and on array base palte, instill liquid crystal, color membrane substrates is coated with frame glue, and the array base palte of above operation and color membrane substrates will be completed to group, through solid roasting, the operation such as cutting completes the whole making of TFT display part.Manufacturing process there is one procedure be: to instill the operation of liquid crystal on array base palte or color membrane substrates, be called for short: ODF (formula of dripping injection) operation or irrigation crystal operation.
Current industry substantially adopts ODF technology, namely with single liquid crystal water dropper, is drop by drop added dropwise on substrate by liquid crystal according to the arrangement of array base palte product.Being the schematic diagram that available liquid crystal apparatus for coating carries out ODF operation referring to Fig. 1 to Fig. 3, Fig. 1, Fig. 2 is the substrate through the coating of ODF operation, and Fig. 3 is the generalized section of the liquid crystal water dropper of available liquid crystal apparatus for coating.The guard shield 13 that available liquid crystal apparatus for coating mainly includes liquid crystal water dropper 12 and transparent material is made, the general components such as other such as liquid crystal containers does not repeat them here.Fig. 3 shows that the mozzle 121 within existing liquid crystal water dropper 12 is column type mozzle.Fig. 1 shows the situation that the substrate 11 on workbench 10 is coated by available liquid crystal apparatus for coating, and substrate 11 has the liquid crystal 15 dripped, and is the liquid crystal 14 dripped below liquid crystal water dropper 12.
When application available liquid crystal apparatus for coating carries out ODF operation, need liquid crystal water dropper just can complete the making of dripping of a substrate on substrate back and forth many times, Production Time is very long, even if being to increase liquid crystal water dropper quantity and improving liquid crystal water dropper translational speed, can not reduce the activity duration equally.And along with the increasing of substrate size, make especially to use up and join phase liquid crystal, drip and have the substrate of liquid crystal to be exposed in air before to group, because of liquid crystal molecule with the steam in PI (polyimides) molecule relative atmospheric and CO2The degree of absorption of gas is different, causes the threshold voltage of liquid crystal in liquid crystal display screen after group different, it is easy to produce drippage display uneven (Dropmura) phenomenon.The following is the threshold voltage V of LCDthFormula:
In formula: Φ0For twist angle；K11、K22、K333 kinds of deformation elastic constants for liquid crystal material；Δ ε is the dielectric anisotropy of liquid crystal material；ε0For permittivity of vacuum.
From above formula it can be seen that Liquid Crystal Elastic Constants is subject to the steam air and CO2The impact of gas and change.Thus affecting the threshold voltage V of LCDth。
Current solution is strict management and control ODF processing procedure humiture, and arrives the product time of staying to the group stage under liquid crystal drop.But product production is had large effect by the method, and can not stop the bad generation of Dropmura completely.
Summary of the invention
Therefore, it is an object of the invention to provide a kind of liquid crystal coating apparatus, stop the bad generation of Dropmura, and improve the speed that single chip liquid crystal drips.
For achieving the above object, the present invention provides a kind of liquid crystal coating apparatus, liquid crystal water dropper including multiple dense arrangement, the internal mozzle bore flowed through for liquid crystal of described liquid crystal water dropper becomes big in liquid crystal outflow side, and described liquid crystal water dropper has for heating the heater flowing through liquid crystal to control to flow out the temperature of liquid crystal.
Wherein, described mozzle is T-shaped mozzle.
Wherein, described heater is located in the sidewall of liquid crystal water dropper.
Wherein, described liquid crystal water dropper is set to the liquid crystal that planarization coating is flowed out.
Wherein, described liquid crystal water dropper is that single file is spaced.
Wherein, the temperature that liquid crystal is heated by described heater sets according to liquid crystal material.
Wherein, the temperature of described outflow liquid crystal controls is 40～70 degrees Celsius.
Wherein, the spacing of described liquid crystal water dropper arrangement is set to 1 micron～1 millimeter.
Wherein, described liquid crystal water dropper is provided externally with guard shield.
Wherein, described guard shield is made of clear material.
To sum up, the liquid crystal coating apparatus of the present invention can realize the mode of plane coating of liquid crystalline, it is possible to stops the bad generation of Dropmura, and improve the speed that single chip liquid crystal drips, to improving product yield, shortening the production time, improving product competitiveness has very great help.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, by the specific embodiment of the present invention is described in detail, technical scheme and other beneficial effects will be made apparent.
In accompanying drawing,
Fig. 1 is the schematic diagram that available liquid crystal apparatus for coating carries out ODF operation；
Fig. 2 is the substrate through the coating of ODF operation；
Fig. 3 is the generalized section of the liquid crystal water dropper of available liquid crystal apparatus for coating；
Fig. 4 is the schematic diagram that liquid crystal coating apparatus one of the present invention preferred embodiment carries out ODF operation；
Fig. 5 is the substrate through the coating of ODF operation；
Fig. 6 is the generalized section of the liquid crystal water dropper of liquid crystal coating apparatus one of the present invention preferred embodiment.
Detailed description of the invention
Being the schematic diagram that liquid crystal coating apparatus one of the present invention preferred embodiment carries out ODF operation referring to Fig. 4 to Fig. 6, Fig. 4, Fig. 5 is the substrate through the coating of ODF operation, and Fig. 6 is the generalized section of liquid crystal water dropper.The general components such as this liquid crystal coating apparatus preferred embodiment includes the liquid crystal water dropper 22 of multiple dense arrangement and the guard shield 23 that transparent material is made, other such as liquid crystal containers can adopt conventional configuration, does not repeat them here；Internal mozzle 221 bore flowed through for liquid crystal of described liquid crystal water dropper 22 becomes big in liquid crystal outflow side, and described liquid crystal water dropper 22 has for heating the heater 222 flowing through liquid crystal to control to flow out the temperature of liquid crystal.Fig. 4 shows the situation that the substrate 21 on workbench 20 is coated by this liquid crystal coating apparatus preferred embodiment, and substrate 21 has the liquid crystal 25 dripped, and is the liquid crystal 24 dripped below liquid crystal water dropper 22.Fig. 6 shows that the mozzle 221 within liquid crystal water dropper 22 is T-shaped mozzle, and heater 222 is located in the sidewall of liquid crystal water dropper 22.Referring to the form of the liquid crystal 25 dripped, in this preferred embodiment, liquid crystal water dropper 22 is set to the liquid crystal that planarization coating is flowed out.Liquid crystal water dropper 22 is spaced in single file.Guard shield 23 provides the protection to liquid crystal water dropper 22 and is easy to observe.The present invention is by the T-shaped liquid crystal water dropper with heating function, it is achieved the mode of plane coating of liquid crystalline, it is possible to stop the bad generation of Dropmura, and improve the speed that single chip liquid crystal drips, to improving product yield, shortening the production time, improving product competitiveness has very great help.
The present invention is in completing to carry out on array base palte to make under liquid crystal drop, use intensive liquid crystal water dropper, spacing can be between 1um～1mm, and liquid crystal water dropper is connected upper heater, use heater that liquid crystal water dropper is heated, heating-up temperature is different and set difference depending on liquid crystal material, general liquid crystal material clearing point temperature between 70～100 degrees Celsius, the heating-up temperature that liquid crystal water dropper sets can but be not limited to 40～70 degrees Celsius.Because liquid crystal material viscosity under heating state can reduce, it is possible to flow out from tiny liquid crystal water dropper, and the liquid crystal that adjacent lcd water dropper flows out can connect.Liquid crystal water dropper internal pipeline adopts T-shaped design, reduces the distance between liquid crystal water dropper, and on the tube wall of liquid crystal water dropper, design has heating rod simultaneously, and the liquid crystal of process is heated.By arranging interval between liquid crystal water dropper and heating-up temperature etc., when the liquid crystal flowed out touches the crystal liquid substrate needing coating, it is possible to carry out planarization coating.Thus reducing phenomenon under single liquid crystal drop, to the crystal liquid substrate mobile liquid crystal water dropper needing coating, complete liquid crystal coating operations.Because being that disposable coating completes, thus reducing liquid crystal water dropper sweeping action.
Liquid crystal bottled greatly is generally heated operation in order that liquid crystal composition is more uniform by current industry, but liquid crystal has been restored to room temperature (about 20 DEG C) when producing, the present invention is by the liquid crystal water dropper with heating function, realize the mode of plane coating of liquid crystalline, so both can dispense the operation in advance to the big bottle heating of liquid crystal, the speed that single chip liquid crystal drips can have been improved again, to improving product yield, shortening the production time, improving product competitiveness has very great help.
Liquid crystal water dropper is designed as T-shaped water dropper by the present invention, shortens the distance between liquid crystal water dropper, thus reducing phenomenon under single liquid crystal drop, it is achieved the mode of plane coating of liquid crystalline, it is possible to stop the bad generation of Dropmura.
To sum up, the liquid crystal coating apparatus of the present invention can realize the mode of plane coating of liquid crystalline, it is possible to stops the bad generation of Dropmura, and improve the speed that single chip liquid crystal drips, to improving product yield, shortening the production time, improving product competitiveness has very great help.
The above, for the person of ordinary skill of the art, it is possible to conceive according to technical scheme and technology and make other various corresponding changes and deformation, and all these change and deform the protection domain that all should belong to appended claims of the present invention.
Claims (10)
1. a liquid crystal coating apparatus, it is characterized in that, including the liquid crystal water dropper of multiple dense arrangement, the internal mozzle bore flowed through for liquid crystal of described liquid crystal water dropper becomes big in liquid crystal outflow side, and described liquid crystal water dropper has for heating the heater flowing through liquid crystal to control to flow out the temperature of liquid crystal.
2. liquid crystal coating apparatus as claimed in claim 1, it is characterised in that described mozzle is T-shaped mozzle.
3. liquid crystal coating apparatus as claimed in claim 1, it is characterised in that described heater is located in the sidewall of liquid crystal water dropper.
4. liquid crystal coating apparatus as claimed in claim 1, it is characterised in that described liquid crystal water dropper is set to the liquid crystal that planarization coating is flowed out.
5. liquid crystal coating apparatus as claimed in claim 1, it is characterised in that described liquid crystal water dropper is that single file is spaced.
6. liquid crystal coating apparatus as claimed in claim 1, it is characterised in that the temperature that liquid crystal is heated by described heater sets according to liquid crystal material.
7. liquid crystal coating apparatus as claimed in claim 1, it is characterised in that it is 40～70 degrees Celsius that the temperature of described outflow liquid crystal controls.
8. liquid crystal coating apparatus as claimed in claim 1, it is characterised in that the spacing of described liquid crystal water dropper arrangement is set to 1 micron～1 millimeter.
9. liquid crystal coating apparatus as claimed in claim 1, it is characterised in that described liquid crystal water dropper is provided externally with guard shield.
10. liquid crystal coating apparatus as claimed in claim 1, it is characterised in that described guard shield is made of clear material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610338736.9A CN105785669A (en) | 2016-05-19 | 2016-05-19 | Liquid crystal coating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610338736.9A CN105785669A (en) | 2016-05-19 | 2016-05-19 | Liquid crystal coating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105785669A true CN105785669A (en) | 2016-07-20 |
Family
ID=56379050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610338736.9A Pending CN105785669A (en) | 2016-05-19 | 2016-05-19 | Liquid crystal coating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105785669A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110007528A (en) * | 2019-04-03 | 2019-07-12 | 深圳市华星光电半导体显示技术有限公司 | Liquid crystal dripping device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1447171A (en) * | 2002-03-21 | 2003-10-08 | Lg.菲利浦Lcd株式会社 | Liquid crystal distributor |
| US20030214541A1 (en) * | 2002-05-16 | 2003-11-20 | Lg.Philips Lcd Co., Ltd. | Apparatus and method for fabricating a liquid crystal display panel |
| KR20070073478A (en) * | 2006-01-05 | 2007-07-10 | 삼성전자주식회사 | Liquid crystal dropping device |
| CN102207653A (en) * | 2011-06-02 | 2011-10-05 | 深圳市华星光电技术有限公司 | Liquid crystal dripping device with temperature control |
| CN103217837A (en) * | 2012-01-19 | 2013-07-24 | 塔工程有限公司 | Dispensing nozzle for liquid crystal |
| CN203658712U (en) * | 2013-12-26 | 2014-06-18 | 深圳市华星光电技术有限公司 | Liquid crystal dripping device |
| CN104765204A (en) * | 2015-04-07 | 2015-07-08 | 武汉华星光电技术有限公司 | Liquid crystal dropping device and liquid crystal dropping method |
-
2016
- 2016-05-19 CN CN201610338736.9A patent/CN105785669A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1447171A (en) * | 2002-03-21 | 2003-10-08 | Lg.菲利浦Lcd株式会社 | Liquid crystal distributor |
| US20030214541A1 (en) * | 2002-05-16 | 2003-11-20 | Lg.Philips Lcd Co., Ltd. | Apparatus and method for fabricating a liquid crystal display panel |
| KR20070073478A (en) * | 2006-01-05 | 2007-07-10 | 삼성전자주식회사 | Liquid crystal dropping device |
| CN102207653A (en) * | 2011-06-02 | 2011-10-05 | 深圳市华星光电技术有限公司 | Liquid crystal dripping device with temperature control |
| CN103217837A (en) * | 2012-01-19 | 2013-07-24 | 塔工程有限公司 | Dispensing nozzle for liquid crystal |
| CN203658712U (en) * | 2013-12-26 | 2014-06-18 | 深圳市华星光电技术有限公司 | Liquid crystal dripping device |
| CN104765204A (en) * | 2015-04-07 | 2015-07-08 | 武汉华星光电技术有限公司 | Liquid crystal dropping device and liquid crystal dropping method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110007528A (en) * | 2019-04-03 | 2019-07-12 | 深圳市华星光电半导体显示技术有限公司 | Liquid crystal dripping device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160720 |