CN1098202A

CN1098202A - Make the method for liquid crystal indicator

Info

Publication number: CN1098202A
Application number: CN94104694A
Authority: CN
Inventors: 井出明彦; 植木哲朗
Original assignee: Casio Computer Co Ltd
Current assignee: Casio Computer Co Ltd
Priority date: 1993-04-22
Filing date: 1994-04-22
Publication date: 1995-02-01

Abstract

The present invention aims to provide a kind of method of making liquid crystal indicator, its two relative glass plates of linking together with seal and can not break the part that glass plate needs into pieces of need not to overturn.In this method, at first with a blade up the upper surface of glass plate mark half cut line and siphon away unwanted part with a vacuum cups; Afterwards, cut the predetermined position of the below part that comes out of glass plate fully with this blade.Can automatically finish cutting process and can not break the part that needs into pieces with this method, so throughput rate and yield rate all can improve and cost reduces.

Description

Make the method for liquid crystal indicator

The present invention relates to a kind of method of making liquid crystal indicator.

In prior art, a kind of like this liquid crystal indicator is arranged, its structure is that two sheet glass substrates are linked together by insertion seal therebetween.On itself and another substrate facing surfaces, be formed with transparency electrode on this each substrate, in the space that liquid crystal promptly is filled between this two substrate and is surrounded by the sealing part.In a kind of method of making said apparatus, be ready to two glass substrates that are used to form a plurality of liquid crystal indicators earlier, this two sheet glass substrate is connected to each other after forming transparency electrode and forming the predetermined pre-service of seal having carried out.This glass substrate that connects is cut into a plurality of unit that are used for a plurality of liquid crystal indicators, and this cutting process can carry out inject liquid crystal in each unit before or after.

In above-mentioned manufacture method, cut a kind of mode of this two glass substrate below with reference to Fig. 8 explanation.

Shown in Fig. 8 A, at first, two

glass substrates

1 and 2 are linked together with a plurality of seals 3 that are inserted between base, and liquid crystal 4 is sealed between

substrate

1 and 2 and a plurality of spaces of surrounding by seal 3 in.Afterwards, in

glass substrate

1,2, mark score line 1a on one the outside surface of side with a cutting wheel (not shown) up.Then, shown in Fig. 8 B, this glass substrate that links together 1 and 2 is overturn by the artificially, and acts on a bump from this glass substrate 1 of last direction and 2 of upper substrate 2; With below produce a stress in the score line of glass plate 1, cut this glass plate 1 along score line 1a thus.Then, shown in Fig. 8 C, above this, mark score line 2a in the outside surface of glass plate 2, and this

glass plate

1 and 2 is manually overturn.Then, from this glass plate 1 of last direction of this top glass plate 1 and bump of 2 effects, with below produce a stress among the score line 2a of glass plate 2, cut this glass plate 2 along score line 2a thus, shown in Fig. 8 D.Then, shown in Fig. 8 E, glass plate 2 is removed to obtain a plurality of liquid crystal cells 6 corresponding to the part of the portion of terminal 5 of glass plate 1.

As mentioned above, in traditional glass sheet cutting method, need twice artificially to stir glass plate 1 and 2.Therefore, the artificial turning operation that this traditional method need bother, this will increase the manufacturing cost of LCD.In addition, since will be from the glass plate that is arranged in the top

direction glass plate

1 and 2 effects, one bump with below the score line of glass plate produce a stress, this part that is arranged in the non-score line of glass plate of below may be broken, the glass plate that perhaps is positioned at the top may be undesirably broken, makes yield rate reduce.

The present invention draws with above-mentioned background, an one purpose promptly is to provide a kind of method of making liquid crystal indicator, and it can be cut into two glass plates that link together that are used to constitute liquid crystal indicator a plurality of parts that are used for the unit of liquid crystal indicator and need not twice this glass plate that is connected of upset and can damaged this two glass plate do not wish to cut.

In order to achieve the above object, the invention provides a kind of method of making liquid crystal indicator, it comprises:

With two substrates toward each other, and with the seal that inserts therebetween this two substrate is coupled together;

In a space that between this two substrate and by the sealing part, surrounds, inject liquid crystal;

A plurality of predetermined positions at least one substrate form half cut line;

Cut this substrate along the half cut line in this at least one substrate, from this at least one substrate, be partitioned into part thus; And

Remove the each several part that this is partitioned into, and the part corresponding to these parts that are partitioned into of another substrate is come out.

Other purpose and advantage of the present invention will provide in the following description, and part will be found out from this description or see by putting into practice the present invention.The means that objects and advantages of the present invention can particularly point out from appended claims and the combination in understanding and reach.

The accompanying drawing of a book part has shown the present preferred embodiment of the present invention as an illustration, and it is used to explain principle of the present invention with above general introduction and the following detailed description to preferred embodiment.In the accompanying drawing:

Figure 1A is a plan view of two glass plates that link together.

Figure 1B is the cut-open view along B-B line among Figure 1A of this glass plate that links together;

Fig. 1 C is the cut-open view along C-C line among Figure 1B of this glass plate that links together;

Fig. 2 A is a plan view of the glass plate that links together among Figure 1A, wherein, a quilt above in this glass plate along most half cut line by hemisect;

Fig. 2 B is the cut-open view of this hemisect glass plate that links together along B-B line among Fig. 2 A;

Fig. 2 C is the cut-open view of this hemisect glass plate that links together along C-C line among Fig. 2 B;

Fig. 3 A is a plan view of this glass plate that links together, and wherein unwanted part is removed from the glass plate of top;

Fig. 3 B be this link together and the glass plate that is removed of part along the cut-open view of B-B line among Fig. 3 A;

Fig. 3 C be this link together and the glass plate that is removed of part along the cut-open view of the C-C line among Fig. 3 B;

Fig. 4 A is a plan view of this glass plate that links together, and wherein a below glass plate is cut along most lines of cut;

Fig. 4 B is the cut-open view of each unit that separates of this glass plate that links together along B-B line among Fig. 4 A;

Fig. 4 C is the cut-open view of each unit that separates of this glass plate that links together along C-C line among Fig. 4 B;

Fig. 5 is the cut-open view of a distortion of each separative element of this glass plate that links together, and wherein the bight of the cutting part of this below glass plate is repaiied and cut;

Fig. 6 A is a plan view of this glass plate that links together, and wherein has burr after unwanted part is removed;

Fig. 6 B be this link together and the glass plate that is removed of part along the cut-open view of B-B line among Fig. 6 A;

Fig. 6 C be this link together and the glass plate that is removed of part along the cut-open view of C-C line among Fig. 6 B;

Fig. 7 schematically shows the method for a removal burr;

Fig. 8 A-8E is the cut-open view of two glass plates that link together in a plurality of steps of manufacture method of a traditional liquid crystal indicator.

Fig. 1-4 has shown each step of cutting two glass plates according to an embodiment of the invention, and this cutting step is used for making the method for liquid crystal indicator.

At first with reference to figure 1A-1C, two

glass plates

11 and 12 that respectively have 0.3mm to 1.5mm thickness are set to toward each other, with a plurality of seals 13 that are inserted in therebetween it are connected to each other then.Then, by being formed on the liquid crystal injection portion 14 on the seal 13, in the space that liquid crystal 15 is injected between

glass plate

11 and 12 and is surrounded by seal 13, and should injection portion 14 by with another seal 16 sealings.

Then, shown in Fig. 2 A-2C, those of this top glass plate 11 are positioned at outside the space of having inserted liquid crystal and along the part that the horizontal expansion of sealing part 13 is partly extended and are rotated the upper surface hemisect of the blade 21 of plate-like from this top glass plate by one, make the part that is cut be left the thickness of 30 μ m-50 μ m, form half cut line 22 thus.When this blade 21 had the thickness of 2 inches diameter and 0.2mm, the rotational speed of this blade 21 was set to about 30000rpm(rev/min).When this blade 21 had the thickness of 4 inches diameter and 0.25mm, this speed was set to about 7500rpm.When cutting, pure water is injected into by the part of hemisect to cool off them.After having cut a half cut line 22a before close with it second half line of cut 22b of cutting, the part 11a of glass plate between

half cut line

22a and 22b might break and burst broken because of the rotation of blade 21.In order to prevent this situation, the thickness setting of each remainder 23 is 70 μ m-100 μ m when being preferably in cutting beginning and end.

Afterwards, shown in Fig. 3 A-3C, the part 11a that do not need of glass plate 11 is picked up with a vacuum cups 24 above between this half cut line 22a and the 22b this.Like this, this unwanted part 11a does not need the remainder 23 at part 11a two ends to be cut with being positioned at respectively.As a result, the unwanted part 11a of each of this top glass plate 11 is removed, and in other words, this top glass plate 11 is split into a plurality of parts.At this state, this below glass plate is exposed corresponding to the part that does not need part 11a that is removed.On the part that glass plate 12 is exposed below this, by ITO(Indium Tin Oxide) splicing ear made is formed.Then, shown in Fig. 4 A-4C, a precalculated position of each expose portion of this below glass plate 12 is cut fully, sprays pure water to this expose portion simultaneously, obtains a plurality of liquid crystal cells 25 thus.

In above-mentioned glass cutting method, this two glass sheets can be cut to form a plurality of liquid crystal cells 25 and need not to be reversed.Therefore, this

glass plate

11 and 12 can automatically be cut and be need not hand labor, has reduced the cost of making.In addition, because

glass plate

11 and 12 needing can avoid the fragmentation of part not by acting on a bump and being to utilize blade 21 cuttings, improve yield rate thus.

Fig. 5 has shown a distortion of the present invention.

Blade 21 tools one of use in this deformation program form the outer end 21a of cutting blade always, and oblique blade portion 21b, this each oblique blade portion 21b points on the direction at blade 21 centers gradually along stretching and respectively forming oblique blade face from two sides of this outer end 21a one.

When using this blade 21, at first, this outer end 21a is used to this top glass plate 11 of hemisect, then removes the unwanted part 11a of the cutting of this top glass plate 11 with vacuum cups 24, as above-mentioned situation.Then, as shown in Figure 5, the outer end 21a of this blade 21 is used to cut a predetermined position of each expose portion of this below glass plate 12, and the 21b of bevel blade portion of blade 21 is formed chamfered section 26 thus by the edge of the cutting part of this below glass plate 12 that is used to constantly splay.

Therefore, when the edge of the cutting part of glass plate must chamfering, above-mentioned blade 21 was very useful, because it can carry out simultaneously to the cutting of below glass plate 12 with to the chamfering at the edge of its cutting part.

Fig. 6 has shown at glass plate 11 is not needed part to be removed the situation that back burr 27 remains in the cutting part of glass plate 11 above this with vacuum cups 24 by blade 21 hemisects and its.

In this situation, as shown in Figure 7, by a nozzle 30, pure water 31 is by from a top and leave the position of this burr to the inside, at 50kg/cm ²-100kg/cm ²Pressure under (i.e. the aqueous jet of a high pressure) angular injection above remaining on the burr on the glass plate 11, this nozzle 30 is connected to a pump 28 via pipe 29.Its result, burr 27 is removed from top glass plate 11 at once.

As mentioned above, the burr that remains on the glass plate 11 of top can be removed easily and reliably with simple device.

Though glass plate 12 is to cut with blade 21 after glass plate 11 is cut up below in the foregoing description and distortion, the present invention is not limited to this.For example, the present invention can so revise, promptly when below mark score line on the lower surface of glass plate 12 after by from above glass plate 11 on bump of

glass plate

11,12 effects of linking together of direction and along this score line cutting plate 12, as mentioned above, this top glass plate is by with blade 21 hemisects.In this situation, the

glass plate

11 and 12 that only needs once inside out to link together.

To those skilled in the art, other advantage and distortion are expected easily.Therefore, the present invention is not limited to the above-mentioned specific detail and the illustrative examples of demonstration in broad aspect.Therefore, do not break away from by claims and total inventive concept and spirit or scope that equivalent limited, can make various distortion, they also all belong to category of the present invention.

Claims

1, a kind of method of making liquid crystal indicator may further comprise the steps:

Two plate bases are changed to toward each other, and connect this two substrate with the seal that is inserted in therebetween;

To between this two substrate and in the space that centers on by seal, injecting liquid crystal;

A plurality of predetermined positions at one of this substrate at least form half cut line;

Along this this at least one substrate of half cut line cutting that forms thereon, separate the part of this at least one substrate thus from it; And

Remove this separated part and expose the part corresponding of another substrate with this separated part.

2, method as claimed in claim 1, also be included in separated part from this at least one substrate after, when existing, from the get on step of burr removal of the cut surface of this at least one substrate as burr.

3, method as claimed in claim 2 also comprises the step of the predetermined position of each expose portion that cuts described another substrate.

4, method as claimed in claim 3 wherein, is cut in the step of another substrate at this, and the edge of the cut surface of this another substrate is by the while chamfering.

5, method as claimed in claim 4, wherein, in the part of described this at least one substrate of separation with expose in the step of this another substrate predetermined portions, the part of this at least one substrate is held and is removed with a suction nozzle.

6, method as claimed in claim 5, wherein, in that at least one substrate gets on the step of burr removal from this, current are injected on this burr.

7, method as claimed in claim 4, wherein, in that at least one substrate gets on the step of burr removal from this, current are injected on this burr.

8, method as claimed in claim 3, wherein, in the step of the part of described this at least one substrate of separation and the specific part that exposes this another substrate, the part of this at least one substrate is held and is removed with a suction nozzle.

9, method as claimed in claim 8, wherein, in that at least one substrate gets on the step of burr removal from this, current are injected on this burr.

10, method as claimed in claim 3, wherein, in that at least one substrate gets on the step of burr removal from this, current are injected on this burr.

11, method as claimed in claim 2, wherein, in the step of the part of described this at least one substrate of separation and the predetermined portions that exposes this another substrate, the part of this at least one substrate holds and removes with a suction nozzle.

12, as the method for claim 11, wherein, in that at least one substrate gets on the step of burr removal from this, current are injected on this burr.

13, method as claimed in claim 2, wherein, in that at least one substrate gets on the step of burr removal from this, current are injected on this burr.

14, method as claimed in claim 1, wherein, in the step of the part of described this at least one substrate of separation and the predetermined portions that exposes this another substrate, the part of this at least one substrate holds and removes with a suction nozzle.

15, method as claimed in claim 1 also comprises the step of a predetermined position of each expose portion that cuts described another substrate.

16, as the method for claim 15, wherein, cut in the step of another substrate at this, the edge of the cut surface of this another substrate is by the while chamfering.

17, as the method for claim 16, wherein, in the step of the part of described this at least one substrate of separation and the predetermined portions that exposes this another substrate, the part of this at least one substrate holds and removes with a suction nozzle.

18, as the method for claim 15, wherein, in the step of the part of described this at least one substrate of separation and the predetermined portions that exposes this another substrate, the part of this at least one substrate holds and removes with a suction nozzle.