CN1127364A - Vacuum-pressing making method for LCD screen - Google Patents
Vacuum-pressing making method for LCD screen Download PDFInfo
- Publication number
- CN1127364A CN1127364A CN 95100234 CN95100234A CN1127364A CN 1127364 A CN1127364 A CN 1127364A CN 95100234 CN95100234 CN 95100234 CN 95100234 A CN95100234 A CN 95100234A CN 1127364 A CN1127364 A CN 1127364A
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- CN
- China
- Prior art keywords
- liquid crystal
- vacuum
- make
- crystal screen
- crystal display
- 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
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Abstract
The present invention discloses a method for vacuum pressing liquid crystal display screen. The technical scheme adopted by said invention includes such steps as using vacuum-pumping technique at the liquid crystal injection hole to make the interior of the liquid crystal screen form vacuum or make the interior of liquid crystal screen and local exterior of the liquid crystal screen form vacuum and make its external environmental atmospheric pressure produce pressure to the liquid crystal screen, and at the same time heating and hardening seal gum.
Description
The invention belongs to liquid crystal display device technology field.
In the liquid crystal display device manufacturing process, pressing screen to solidify fluid sealant technology is one of gordian technique wherein.At present curing technology adopts pressurized heat to solidify according to the type of fluid sealant and two kinds of pressurization photocurings, because the optic-solidified adhesive intensity difference, so the liquid crystal device manufacturing industry all adopts the pressurized heat curing technology, but the shortcoming that this technology exists is:
1. the gap between two blocks of substrate glass is 1.2～40 μ m, and two inside surfaces are all through friction groove mark and cleaning treatment.In the pressure process of heating, thinning agent in the fluid sealant and hardening agent are overflowed, can't in time discharge this this technology and to retain in the screen and volatile matter, make it to remain on the interior Liquid Crystal Molecules Alignment laminar surface of screen, cause secondary pollution, the back operation is injected and the arrangement of liquid crystal material characteristic and liquid crystal molecule causes adverse effect.
2. in the preliminary drying process, though the most of bubble in the fluid sealant be discharged from, but still residual fraction micro-bubble, these bubbles can't be discharged in this technology, the O-ring seal density after solidifying is exerted an influence, thereby influence life-span of liquid crystal device.
The method that the purpose of this invention is to provide a kind of vacuum pressing liquid crystal device, this method can overcome above-mentioned two kinds of shortcomings effectively.
The technical solution used in the present invention is with the technology of vacuumizing liquid crystal display to be pressurizeed.Because liquid crystal display is except that leaving the liquid crystal material inlet, all adopt fluid sealant to be coated with the seal sealing all around.Space between two ito glasses can be decided according to the design of liquid crystal parameter, generally is 1.5～40 μ m.Vacuumize to make in the liquid crystal display by liquid crystal injecting port and form negative pressure or make in the liquid crystal display and liquid crystal display local exterior forms negative pressure, make external environment condition air pressure form pressure to liquid crystal display, pressure limit is 0.01～1.0atm, and the size of its pressure is regulated by vacuum tightness, heating makes sealing glue solidifying simultaneously.
Advantage of the present invention is:
1. owing to be heating in vacuum, organic micronic dust of arrayed surface institute absorption in thinning agent, hardening agent and the liquid crystal display in the fluid sealant is easily gasified, discharge, purify the Liquid Crystal Molecules Alignment surface through the liquid crystal material inlet;
2. easily discharge the micro-bubble in the fluid sealant, make the O-ring seal after the curing fine and close more, help prolonging the life-span of liquid crystal device.
Below in conjunction with drawings and Examples the present invention is described in further detail.
Fig. 1 is a synoptic diagram of the present invention.
1-vacuum pump among the figure; 2-vacuum valve; 3-gas circuit; 4-rubber; 5-sheet metal; 6-fluid sealant; 7-liquid crystal display gap; 8-upward ito glasses; 9-following ito glass.
Embodiment: control vacuum tightness is 0.8atm, and two sheet glass gaps, 6.0 μ m heat 140 ℃, and the time is 1.5h, and sealant material is XN-2.1 (chemical strain is pressed in Mitsui east).
Claims (1)
1. a vacuum-pressing making method for LCD screen is characterized in that making the inside and outside formation negative pressure of liquid crystal display with the technology of vacuumizing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95100234 CN1127364A (en) | 1995-01-18 | 1995-01-18 | Vacuum-pressing making method for LCD screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95100234 CN1127364A (en) | 1995-01-18 | 1995-01-18 | Vacuum-pressing making method for LCD screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1127364A true CN1127364A (en) | 1996-07-24 |
Family
ID=5073335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95100234 Pending CN1127364A (en) | 1995-01-18 | 1995-01-18 | Vacuum-pressing making method for LCD screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1127364A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6844908B2 (en) | 2000-10-04 | 2005-01-18 | Samsung Electronics Co., Ltd. | Apparatus for injecting liquid crystal materials and methods for manufacturing liquid crystal panels by using the same |
| CN102107172A (en) * | 2010-11-01 | 2011-06-29 | 深圳市华星光电技术有限公司 | Frame sealant coating device and sealant supply method thereof |
| CN106405888A (en) * | 2016-07-01 | 2017-02-15 | 合肥研力电子科技有限公司 | Twice-compression equipment for screen |
-
1995
- 1995-01-18 CN CN 95100234 patent/CN1127364A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6844908B2 (en) | 2000-10-04 | 2005-01-18 | Samsung Electronics Co., Ltd. | Apparatus for injecting liquid crystal materials and methods for manufacturing liquid crystal panels by using the same |
| CN102107172A (en) * | 2010-11-01 | 2011-06-29 | 深圳市华星光电技术有限公司 | Frame sealant coating device and sealant supply method thereof |
| CN102107172B (en) * | 2010-11-01 | 2013-01-09 | 深圳市华星光电技术有限公司 | Frame sealant coating device and sealant supply method thereof |
| CN106405888A (en) * | 2016-07-01 | 2017-02-15 | 合肥研力电子科技有限公司 | Twice-compression equipment for screen |
| CN106405888B (en) * | 2016-07-01 | 2019-05-07 | 合肥研力电子科技有限公司 | Shield secondary press device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |