CN100573278C - Liquid crystal drip-injection method - Google Patents
Liquid crystal drip-injection method Download PDFInfo
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- CN100573278C CN100573278C CNB2005101122651A CN200510112265A CN100573278C CN 100573278 C CN100573278 C CN 100573278C CN B2005101122651 A CNB2005101122651 A CN B2005101122651A CN 200510112265 A CN200510112265 A CN 200510112265A CN 100573278 C CN100573278 C CN 100573278C
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Abstract
The invention discloses a kind of liquid crystal drip-injection method, determine the instillation position of liquid crystal according to an instillation array, this instillation array is I-shaped.Among the present invention, liquid crystal drip the back before the vacuum abutted atmosphere opening during this period of time in, basically all liquid crystal drops all have been connected in together, formed the liquid crystal layer of homogeneous in the central authorities of screen, when atmosphere opening, atmospheric pressure is added on the liquid crystal layer uniformly like this, and cancels out each other with the impulsive force of the suffered all around liquid crystal diffusion of the contacted spherical bedding and padding of liquid crystal layer, so just suppress moving of spherical bedding and padding, thereby also just suppressed the generation of box thickness ununiformity.
Description
Technical field
The present invention relates to the liquid crystal drip-injection method in a kind of display panels manufacturing.
Background technology
Low at traditional liquid crystal injection technology liquid crystal injection cycle length, liquid crystal utilization rate, equipment imports shortcomings such as cost height, has adopted ODF (injecting under the liquid crystal drop) technology at present in the production engineering of large size panel mostly.This technology is that certain amount of liquid crystal is dropped in earlier on TFT (thin film transistor (TFT)) substrate, forms the technology of liquid crystal display again by the heat curing of envelope frame glue with fitting after TFT substrate and the smart contraposition of CF (color film) substrate in a vacuum then.This technology can shorten time that liquid crystal injects and the utilization rate that has improved liquid crystal greatly, and the box of control liquid crystal display that can be strict by accurate control amount of liquid crystal is thick.But under liquid crystal drop, get ready owing to liquid crystal in the technology, can form box thickness ununiformity on every side what liquid crystal was got ready.
It is that impartial method is got figure ready that the present liquid crystal that adopts is got figure ready, ratio is counted in horizontal and vertical getting ready when promptly recently roughly determining that liquid crystal is got ready by the length and width of calculating envelope frame glue earlier, get number ready than after determining, the amount of liquid crystal that uses according to reality and the situation of capacity of equipment determine each row and column maximum get number ready.Get number ready and select too much can influence the productive capacity of equipment, it is very few to get the number selection ready, may have influence on the even diffusion of liquid crystal.Determine line space Y-P1 and column pitch X-P1 again after the getting number ready and determine of each row and column.To be the point of getting the figure most peripheral ready equate apart from the distance of envelope frame glue the implication of impartial method, and the calculating of carrying out line space and column pitch for the basis as shown in Figure 1 in proper order.
Adopt this figure of getting ready, liquid crystal dots is relative with the spacing of point excessive, when the bedding and padding that play certain supporting role in the liquid crystal display adopt spherical bedding and padding, in vacuum abutted atmosphere opening moment, atmospheric pressure is added on the upper and lower base plate simultaneously, because between substrate is vacuum state, the liquid crystal between substrate outwards spreads rapidly owing to be subjected to atmospheric effect.Because this moment, liquid crystal contacted with spherical bedding and padding on the CF, therefore liquid crystal can produce certain impulsive force to spherical bedding and padding in the diffusion process rapidly, and this impulsive force makes the more weak spherical bedding and padding of pull-out capacity to move along with the mobile direction of liquid crystal.Because the existence of BM on the CF substrate (black matrix) section difference, spherical bedding and padding will be deposited near the BM or below the BM in the process that moves, because the bulk deposition of spherical bedding and padding, the thick spherical bedding and padding of just being piled up of box are herein propped up and can't be reached the thick value of normal box, thereby formed box thickness ununiformity, as shown in Figure 2.
Summary of the invention
The objective of the invention is by improving liquid crystal drip-injection method to solve the problem of box thickness ununiformity.
The objective of the invention is to be achieved through the following technical solutions:
A kind of liquid crystal drip-injection method is determined the instillation position of liquid crystal according to an instillation array, and this instillation array is I-shaped.
Wherein, be provided with angled transition between the two ends of this instillation array and the center section.Described instillation array is positioned at the liquid crystal display medium position.
Determine the spacing of each point in this instillation array by the following method: on a goods TFT substrate according to working condition a few dropping liquid crystalline substances that drip, note the needed time of the every variation of radius 1mm of liquid crystal drop, the size of the diameter of liquid crystal drop is made curve map over time, finish the required time of accurate contraposition according to the required value of production line productive temp and vacuum forming apparatus and estimate the time interval before the vacuum abutted atmosphere opening of back under the liquid crystal drop substantially, it is much finding out at the diameter of back liquid crystal drop during this period of time according to the value in this time interval, this value is set at liquid crystal gets in the figure between points interval ready.
Positive progressive effect of the present invention is: liquid crystal drip the back before the vacuum abutted atmosphere opening during this period of time in, basically all liquid crystal drops all have been connected in together, formed the liquid crystal layer of homogeneous in the central authorities of screen, like this when atmosphere opening, atmospheric pressure is added on the liquid crystal layer uniformly, and cancel out each other with the impulsive force of the suffered all around liquid crystal diffusion of the contacted spherical bedding and padding of liquid crystal layer, so just suppress the mobile of spherical bedding and padding, thereby also just suppressed the generation of box thickness ununiformity.
Description of drawings
Fig. 1 is existing instillation array synoptic diagram.
Fig. 2 a-2c is the production process synoptic diagram of box thickness ununiformity.
Fig. 3 is the instillation array synoptic diagram of one embodiment of the invention.
Fig. 4 a-4b is the effect synoptic diagram by the product of the method disclosed in the present manufacturing.
Embodiment
Provide preferred embodiment of the present invention below in conjunction with accompanying drawing, to describe technical scheme of the present invention in detail.
As shown in Figure 3, a kind of liquid crystal drip-injection method is determined the instillation position of liquid crystal according to an instillation array, and this instillation array is I-shaped.Wherein, be provided with angled transition between the two ends of this instillation array and the center section.
Found through experiments because liquid crystal is got the box thickness ununiformity that causes ready clearly screen interdependence and position interdependence have been arranged.The screen interdependence is meant that the screen of box thickness ununiformity is just concentrated in the liquid crystal display that occurs in certain several times and is not that the liquid crystal display of all faces all has box thickness ununiformity to take place; Though the position interdependence is meant box thickness ununiformity generation is arranged all in the liquid crystal display of certain several times, the position that box thickness ununiformity takes place or the zone of the generation position in screen is relatively-stationary.
Described instillation array is positioned at the liquid crystal display medium position, to avoid the multiple zone of box thickness ununiformity.The figure of getting ready of liquid crystal changes, and figure inside is adjusted the setting of row and column, but total number of getting ready does not become in screen, and it is the not change of the thick value of box of liquid crystal display that just total amount of liquid crystal not have to become.
Can determine the spacing of each point in this instillation array by the following method:
On a goods TFT substrate,, note the needed time of the every variation of radius 1mm of liquid crystal drop, the size of the diameter of liquid crystal drop is made curve map over time according to working condition a few dropping liquid crystalline substances that drip.Finish the required time of accurate contraposition according to the required value of production line productive temp and vacuum forming apparatus and estimate the time interval before the vacuum abutted atmosphere opening of back under the liquid crystal drop substantially, it is much finding out at the diameter of back liquid crystal drop during this period of time according to the value in this time interval, this value is set at the interval that liquid crystal gets ready in the figure between points gets final product.
By this design, liquid crystal drip the back before the vacuum abutted atmosphere opening during this period of time in, basically all liquid crystal drops all have been connected in together, formed the liquid crystal layer of homogeneous in the central authorities of screen, like this when atmosphere opening, atmospheric pressure is added on the liquid crystal layer uniformly, and cancel out each other with the impulsive force of the suffered all around liquid crystal diffusion of the contacted spherical bedding and padding of liquid crystal layer, so just suppressed moving of spherical bedding and padding, thereby also just suppressed the generation of box thickness ununiformity, shown in Fig. 4 a-4b.
Claims (2)
1, a kind of liquid crystal drip-injection method, it is characterized in that, this instillation array is I-shaped, and should be positioned at the liquid crystal display medium position by the instillation array, determine the spacing of each point in this instillation array by the following method: on a goods TFT substrate according to working condition a few dropping liquid crystalline substances that drip, note the needed time of the every variation of radius 1mm of liquid crystal drop, the size of the diameter of liquid crystal drop is made curve map over time, finish the required time of accurate contraposition according to the required value of production line productive temp and vacuum forming apparatus and estimate the time interval before the vacuum abutted atmosphere opening of back under the liquid crystal drop substantially, it is much finding out at the diameter of back liquid crystal drop during this period of time according to the value in this time interval, will be set at the spacing of each point in the liquid crystal drip-injection array in the value of diameter of back liquid crystal drop during this period of time.
2, liquid crystal drip-injection method according to claim 1 is characterized in that, is provided with angled transition between the two ends of this instillation array and the center section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101122651A CN100573278C (en) | 2005-12-28 | 2005-12-28 | Liquid crystal drip-injection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101122651A CN100573278C (en) | 2005-12-28 | 2005-12-28 | Liquid crystal drip-injection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1996131A CN1996131A (en) | 2007-07-11 |
| CN100573278C true CN100573278C (en) | 2009-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005101122651A Active CN100573278C (en) | 2005-12-28 | 2005-12-28 | Liquid crystal drip-injection method |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5244366B2 (en) * | 2007-10-30 | 2013-07-24 | 武蔵エンジニアリング株式会社 | Liquid material dripping method, program and apparatus |
| WO2011013421A1 (en) * | 2009-07-29 | 2011-02-03 | シャープ株式会社 | Liquid crystal dripping apparatus and method wherein jetting mode of liquid crystal is changed |
| CN105044998B (en) * | 2015-09-10 | 2018-03-27 | 深圳市华星光电技术有限公司 | Liquid crystal box preparation method |
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| CN1996131A (en) | 2007-07-11 |
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Owner name: SHANGHAI ZHONGHANG OPTOELECTRONICS CO., LTD. Free format text: FORMER OWNER: SHANGHAI SVA NEC LIQUID CRYSTAL DISPLAY CO., LTD. Effective date: 20100325 |
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Free format text: CORRECT: ADDRESS; FROM: 201108 NO.3388, HUANING ROAD, MINHANG DISTRICT, SHANGHAI CITY TO: 201108 NO.3388, HUANING ROAD, SHANGHAI CITY |
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Effective date of registration: 20100325 Address after: 201108 Shanghai City Huaning Road No. 3388 Patentee after: Shanghai AVIC Optoelectronics Co., Ltd. Address before: 201108 Shanghai city Minhang District Huaning Road No. 3388 Patentee before: Shanghai SVA-NEC Liquid Crystal Display Co. Ltd. |