CN101344686A - Method for controlling box thickness of LCD when filling liquid crystal - Google Patents
Method for controlling box thickness of LCD when filling liquid crystal Download PDFInfo
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- CN101344686A CN101344686A CNA2007100759750A CN200710075975A CN101344686A CN 101344686 A CN101344686 A CN 101344686A CN A2007100759750 A CNA2007100759750 A CN A2007100759750A CN 200710075975 A CN200710075975 A CN 200710075975A CN 101344686 A CN101344686 A CN 101344686A
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Abstract
A method used for controlling the case thickness of an LCD while filling liquid crystal includes the following steps: step 1, the liquid crystal is filled in a vacuum furnace and the vacuum condition inside the vacuum furnace is preserved; step 2, when the liquid crystal is fully filled into the LCD, air is guided into the vacuum furnace; step 3, after the liquid crystal is fully filled and the LCD is sealed. The step 3 includes the steps that: after the liquid crystal is fully filled into the LCD which is then moved out of the vacuum furnace for sealing in 25 minutes and better in 20 minutes. With the method, external pressure has no impact on the case thickness after the LCD is sealed, thus enhancing the defect-free rate of LCD manufacturing.
Description
Technical field
The present invention is about a kind of method of process, particularly a kind of controlling box thickness of LCD when filling liquid crystal of LCD manufacturing.
Background technology
System box technology is that LCD is made one of the most key technology, traditional LCD (Liquid Crystal Display, LCD) glass substrate that liquid crystal cell is 5～9 μ m by two gaps is formed, the transparency electrode that indium oxide layer or tin oxide are arranged on these glass substrate inside surfaces, just between two substrates, fill or negative permittivity to row to liquid crystal material or other various liquid crystal materials, by electrode surface is suitably handled, make liquid crystal molecular orientation become certain state.This kind structural requirement liquid crystal cell has uniform gap, will scatter thin glass fiber or spherical plastic gasket equably at substrate surface thus, and these liners provide necessary support for header board and back plate, make that several microns box is arranged between them is thick.While has an effect in order to prevent moisture and oxygen and liquid crystal, should carry out impermeability sealing-in (as: epoxy sealing glue) around the glass plate, therefore, sark is arranged also in the epoxy sealing glue.
(Liquid Crystal on Silicon LCOS) in little display technique, sees on the picture at projection screen at the liner in ken district to draw very easily, therefore, can not use the distributed mode sark usually at liquid crystal on silicon at liquid crystal on silicon.But still can use sark in epoxy sealing glue provides required box thick.And not having the separation of sark in the display, the thick place of box can become very unstable because of external pressure.If wherein one or two boards are subjected to the influence of external excessive pressure and inwardly subside, can make display cause cisco unity malfunction.
In addition, Liquiid crystal on silicon (lcos) display is irritated in the process of liquid crystal in vacuum, can incognizantly pressurize to display.Irritate liquid crystal and normally display is extracted into certain vacuum tightness, the filling mouth with display is put in the liquid crystal then.If this moment, the vacuum breaker reducing atmosphere was pressed, display can be oppressed because of the air pressure of outside.Under the thick situation that is designed to 4-5 μ m of box, because ambient pressure causes the thick variation of box may display performance not had too much influence, but thick little as compartmentalized box for holding assorted fruits and candies, such as 2-3 μ m, influence will be clearly.If the arrangement of liquid crystal molecule be belong to homeotropic alignment and have negative value to different electrically, the display at 0.7 inch diagonal angle at last so just, irritating liquid crystal also needs one section long time.During this period of time, if display just pours into sub-fraction or also do not fill and just get back to atmospheric pressure, the pressure that display bore is very big, and the thick variation of box also is maximized.And the birefraction of liquid crystal cell and liquid crystal material is determining delaying of demonstration and the performance of amplifying thus, the variation of the thick value of box will cause device to produce defective.
Summary of the invention
Therefore the object of the present invention is to provide a kind of method of controlling box thickness of LCD when filling liquid crystal, this method can make LCD when irritating liquid crystal, and it is thick to keep a well-proportioned box, thereby improves the yield of production of liquid crystal displays.
According to above-mentioned purpose of the present invention, a kind of method of controlling box thickness of LCD when filling liquid crystal is proposed, may further comprise the steps:
Step 1: in vacuum drying oven, pour into liquid crystal, and the vacuum condition of keeping in the vacuum drying oven is constant;
Step 2: when treating that liquid crystal essence is filled display, allow air enter in the vacuum drying oven;
Step 3: after liquid crystal is filled, LCD is sealed.
The method of controlling box thickness of LCD when filling liquid crystal of the present invention, it is thick to make LCD can not destroy the box of liquid crystal because of the pressure in the external world when irritating liquid crystal, has improved the yield that Liquiid crystal on silicon (lcos) display is produced.
Description of drawings
Below in conjunction with accompanying drawing,, will make technical scheme of the present invention and other beneficial effects apparent by the specific embodiment of the present invention is described in detail.
In the accompanying drawing,
Fig. 1 is the process flow diagram of the method for controlling box thickness of LCD when filling liquid crystal of the present invention.
Embodiment
Consult Fig. 1, it is the process flow diagram of the method for controlling box thickness of LCD when filling liquid crystal of the present invention.This method may further comprise the steps:
Step 1: in vacuum drying oven, pour into liquid crystal, and the vacuum condition of keeping in the vacuum drying oven is constant;
It is to irritate display with waiting and liquid crystal is put into vacuum drying oven that liquid crystal injects manufacturing process, will wait that then the filling mouth of irritating display puts into liquid crystal, utilizes capillarity to inject liquid crystal.The speed of injecting is very slow, particularly the LCD of vertical orientation arrangement.
Step 2: when treating that liquid crystal essence is filled display, allow air enter in the vacuum drying oven;
In a few hours of irritating liquid crystal, keep vacuum tightness in the vacuum drying oven up to liquid crystal when filling display or filling display fully, vacuum breaker, allow air slowly enter and irritate in the liquid crystal stove, in this step, allow air enter in the vacuum drying oven after, visible liquid crystal is filled degree, continue to irritate liquid crystal, until filling.
Step 3: after liquid crystal is filled, LCD is sealed.
After treating that liquid crystal is filled display fully, display is moved on to vacuum drying oven seal outward.Display after filling, the influence of extraneous pressure just become not obvious.The effect of sealing is not allow the liquid crystal outflow, does not also allow air enter in the display simultaneously.Seal in time more, it is thick to make display keep a well-proportioned box more, and the sealing process that experiment showed, display moves on to display that to finish effect in 25 minutes outside the vacuum drying oven preferable after liquid crystal is filled, especially 20 minutes Nei Gengjia.
It is thick to make LCD can not destroy the box of liquid crystal because of the pressure in the external world when irritating liquid crystal by said method, has improved the yield that Liquiid crystal on silicon (lcos) display is produced.
The above for the person of ordinary skill of the art, can make other various corresponding changes and distortion according to technical scheme of the present invention and technical conceive, and all these changes and distortion all should belong to the scope that the present invention protects.
Claims (5)
1, a kind of method of controlling box thickness of LCD when filling liquid crystal is characterized in that, may further comprise the steps:
Step 1: in vacuum drying oven, pour into liquid crystal, and the vacuum condition of keeping in the vacuum drying oven is constant;
Step 2: when treating that liquid crystal essence is filled display, allow air enter in the vacuum drying oven;
Step 3: after liquid crystal is filled, LCD is sealed.
2, the method for controlling box thickness of LCD when filling liquid crystal as claimed in claim 1, it is characterized in that, step 1 comprises: will wait to irritate display and liquid crystal is put into vacuum drying oven, will wait that then the filling mouth of irritating display puts into liquid crystal, and utilize capillarity to inject liquid crystal.
3, the method for controlling box thickness of LCD when filling liquid crystal as claimed in claim 1, it is characterized in that, step 2 comprises: keep vacuum tightness in the vacuum drying oven up to liquid crystal when filling display or filling display fully, vacuum breaker allows air slowly enter and irritates in the liquid crystal stove.
4, the method for controlling box thickness of LCD when filling liquid crystal as claimed in claim 3 is characterized in that, step 2 also comprises: after allowing air enter in the vacuum drying oven, look liquid crystal and fill degree, continue to irritate liquid crystal, until filling.
5, the method for controlling box thickness of LCD when filling liquid crystal as claimed in claim 1 is characterized in that, step 3 comprises: after treating that liquid crystal is filled display fully, display is moved on to vacuum drying oven seal in outer 25 minutes, within preferred 20 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100759750A CN101344686A (en) | 2007-07-12 | 2007-07-12 | Method for controlling box thickness of LCD when filling liquid crystal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100759750A CN101344686A (en) | 2007-07-12 | 2007-07-12 | Method for controlling box thickness of LCD when filling liquid crystal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101344686A true CN101344686A (en) | 2009-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100759750A Pending CN101344686A (en) | 2007-07-12 | 2007-07-12 | Method for controlling box thickness of LCD when filling liquid crystal |
Country Status (1)
| Country | Link |
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| CN (1) | CN101344686A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105005164A (en) * | 2015-07-23 | 2015-10-28 | 哈尔滨工业大学 | Preparation method and holographic storage method of real-time nematic liquid crystal cell based on semiconductor and high-molecular photoconduction composite oriented layer |
| CN112639596A (en) * | 2018-08-29 | 2021-04-09 | 默克专利股份有限公司 | Method and device for filling a liquid crystal cell with a medium containing at least one liquid crystal material |
-
2007
- 2007-07-12 CN CNA2007100759750A patent/CN101344686A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105005164A (en) * | 2015-07-23 | 2015-10-28 | 哈尔滨工业大学 | Preparation method and holographic storage method of real-time nematic liquid crystal cell based on semiconductor and high-molecular photoconduction composite oriented layer |
| CN112639596A (en) * | 2018-08-29 | 2021-04-09 | 默克专利股份有限公司 | Method and device for filling a liquid crystal cell with a medium containing at least one liquid crystal material |
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Open date: 20090114 |