JP2001091956A - Liquid crystal device and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new panel structure which prevents a liquid crystal from invading into the gap between substrates outside a sealant in the case of the liquid crystal injection in the liquid crystal device comprising the two substrates which are stuck together through the sealant and a method for manufacturing the same. SOLUTION: A pair of side edge sealing parts 23d, 23e fills the distance between substrates 210, 220 as far as the outer peripheral sides so as to form no gap between the substrates along the outer peripheral sides. Consequently, even if the liquid crystal invades into the gap between the substrates outside the front side sealing part 23b by capillary phenomena in the case the liquid crystal is injected from the liquid crystal injection port 23a, the progress of the liquid crystal stops at the side edge sealing parts 23d, 23e because no gap between the substrates is formed outside the pair of the side edge sealing parts 23d, 23e.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal device and a method of manufacturing the same, and more particularly to a manufacturing technique suitable for application to a liquid crystal device using a flexible substrate such as a resin substrate.

[0002]

2. Description of the Related Art In general, in a liquid crystal device having a relatively small display area, a large-area mother substrate including a plurality of liquid crystal devices to be finally manufactured is used, and the surface of the mother substrate is placed on the large substrate. After forming a transparent electrode and a wiring layer connected to the transparent electrode (or integrated with the transparent electrode), a top coat film, an alignment film, and the like are formed thereon as necessary, and then a sealing material is formed. The two mother substrates are bonded to each other with a predetermined distance therebetween, and the liquid crystal is sealed inside the sealing material. Then, the mother substrates are separated into individual liquid crystal devices by breaking, cutting, or the like.

FIG. 8 schematically shows a plan view structure of an original panel 10 in which two mother substrates 11 and 12 are bonded together via a sealing material 13 in a manufacturing process of a conventional liquid crystal device. In the original panel 10, a plurality of liquid crystal enclosing areas A each having a rectangular shape in a plan view and individually surrounded by a sealing material 13 are arranged vertically and horizontally, and each of the liquid crystal enclosing areas A has a similar structure. On the inner surface of the mother substrate 11 (hereinafter, the substrate surface facing the other mother substrate is simply referred to as “inner surface”, and the substrate surface exposed to the outside opposite to the “inner surface” is simply referred to as “outer surface”). Has a plurality of striped transparent electrodes 11 made of ITO (indium tin oxide) or the like.
a are formed so as to extend mutually in the vertical direction in the figure, and are drawn out of the sealing material 13 as it is to form the external terminal 11b.
It has become. On the other hand, a plurality of similar transparent electrodes 12a are also formed on the inner surface of the mother substrate 12 in a stripe shape extending in the left-right direction in the drawing. The transparent electrode 12a extends on the inner surface of the mother substrate 12 to a position where the transparent electrode 12a comes into contact with the sealing material 13, and is conductively connected to the external terminal 11c via the vertical conductive portion 13f of the sealing material 13. The external terminal 11c is arranged in parallel with the external terminal 11b on the inner surface of the mother board 11, and forms an external terminal portion. Here, the sealing material 13 is a material in which conductive particles are mixed in a resin, and is conductive only in the gap direction between the substrates (the thickness direction of the substrate) in a state where the mother substrates 11 and 12 are bonded and pressed. It is configured so as to exhibit anisotropic conductivity.

A liquid crystal injection port 13a formed in the lower part of the figure is formed in the sealing material 13, and each liquid crystal injection area 13A includes this liquid crystal injection port 13a.
, A front-side seal portion 13b extending along one side, a rear-side seal portion 13c constituting one side of the front-side seal portion 13b, and a pair of the front-side seal portion 13b and the rear-side seal portion 13c. Side seal portions 13d and 13e are provided, and are formed in a rectangular frame shape as a whole.

The original panel 10 is cut along a separation line B (indicated by a dashed line) extending in the left-right direction in the figure, and as shown in FIG. It is separated into strip-shaped panels extending in the direction (hereinafter, simply referred to as “strip panels”). In this state, the inside of the seal of the strip panel is evacuated in the vacuum chamber, and the liquid crystal injection port 13a is put into the liquid crystal. Thereafter, when the strip panel is taken out of the vacuum chamber in this state and the surrounding air pressure is increased, the liquid crystal is injected into the liquid crystal enclosing area A due to the pressure difference between inside and outside. Then, the liquid crystal injection port 13a
Is closed by a sealing material 14, and the liquid crystal
Sealed inside. Finally, the mother substrates 11 and 12 are cut along the separation line C (indicated by a dashed line) to be separated into individual liquid crystal devices 100, and the separation line D (indicated by a two-dot chain line). The external terminal 11b and the external terminal 11c are exposed by cutting only the mother substrate 12 along the line (1).

[0006]

However, in the above-mentioned conventional method for manufacturing a liquid crystal device, the mother substrate 11 and the mother substrate 12 are bonded together via the sealing material 13 with a very small gap of, for example, about 5 to 10 μm. When the liquid crystal injection port 13a of the strip panel shown in FIG. 9 is brought into contact with the liquid crystal, the liquid crystal enters the gap between the substrates outside the front-side seal portion 13b adjacent to the liquid crystal injection port 13a by capillary action. There is a problem that the liquid crystal finally penetrates into the substrate gap outside the rear side seal portion 13c via the substrate gap outside the side side seal portion 13d or the side side seal portion 13e. As described above, the liquid crystal permeates into the gap between the substrates outside the sealing material 13. In this case, the liquid crystal device must be carefully cleaned after separating the liquid crystal device in order to remove the liquid crystal that has entered, and it is very difficult to completely remove the liquid crystal that has entered the very narrow substrate gap. For this reason, there is a possibility that a product defect may occur due to the remaining liquid crystal, for example, electric corrosion may occur due to the liquid crystal attached to the external terminal. Further, in the liquid crystal injection step, the liquid crystal of the same amount as the amount injected into the liquid crystal sealing region A is wasted and used by infiltration into the gap between the substrates outside the sealing material 13, thereby increasing the manufacturing cost. Has also become.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and an object of the present invention is to provide a liquid crystal device in which two substrates are bonded to each other with a sealing material interposed therebetween. It is an object of the present invention to provide a novel panel structure in which liquid crystal does not penetrate into the panel and a method for manufacturing the same.

[0008]

In order to solve the above-mentioned problems, a liquid crystal device according to the present invention comprises two substrates bonded together via a sealing material that covers a liquid crystal sealing region. A liquid crystal injection port provided for injecting liquid crystal therein and a sealing portion for closing the liquid crystal injection port are formed, and an external terminal is drawn out of the sealing material from inside the liquid crystal sealing area. A liquid crystal device having an external connection portion, wherein at least between the liquid crystal injection port and the external connection portion when viewed in the extending direction of the seal material, the seal material extends between outermost ends of the two substrates. Characterized by having an outer edge portion filled with.

According to the present invention, the liquid crystal injection port is provided with an outer edge portion between the liquid crystal injection port and the external connection portion, the outer edge portion of the two substrates being filled with the sealing material. When the liquid crystal comes into contact with the vicinity, even if the liquid crystal infiltrates into the gap between the substrates outside the sealing material due to the capillary phenomenon, the liquid crystal is blocked by the outer edge portion and does not reach the external terminal portion. Can be.

In the present invention, the external connection portion is provided outside a one-side seal portion of the sealing material, and the liquid crystal injection port is disposed on the opposite side of the one-side seal portion with the liquid crystal sealing region interposed therebetween. A pair of side seals opposed to each other are provided on the other seal of the sealing material, and are formed so as to connect the one seal and the other seal. It is preferable that an outer edge portion in which the sealing material is filled up to a portion between outermost ends of the substrates is formed in the pair of side seal portions.

According to the present invention, the sealing material is constituted by the one-side sealing portion, the other-side sealing portion on the opposite side, and the pair of side-side sealing portions, and the one-side sealing portion is provided from the other-side sealing portion provided with the liquid crystal inlet. A side seal portion is disposed between the portions, and an outer edge portion in which the seal material is filled up to a portion between the outermost ends of the two substrates is formed in the side seal portion. Therefore, since the liquid crystal injection port and the external terminal portion are formed on the opposite sides of the liquid crystal sealing region, it is possible to prevent the liquid crystal from entering due to the capillary phenomenon, as well as other causes (such as handling during liquid crystal injection). ) Can further reduce the possibility of liquid crystal sticking to the external terminal portion.

[0012] In the present invention, it is preferable that the outer edge portion filled with the sealing material up to the space between the outermost ends of the two substrates is provided over the entire side seal portion.

According to the present invention, since the sealing material is filled up to the space between the outermost ends of the two substrates over the entire side sealing portion, the amount of liquid crystal penetrating into the space between the substrates due to the capillary phenomenon can be reduced. When manufacturing is performed using a mother board on which a plurality of liquid crystal sealing regions are arranged, similar side sealing portions for other liquid crystal sealing regions adjacent to the side sealing portions can be integrated. As a result, the arrangement density of the liquid crystal sealed region in the mother substrate can be increased, so that the manufacturing cost can be reduced. Further, since the side seal portion is formed between the outermost ends of the substrate, a large display area can be secured with respect to the outer shape of the liquid crystal device, and the frame of the liquid crystal device can be narrowed.

In the present invention, it is desirable that the other-side sealing portion except for the liquid crystal injection port is also filled with a sealing material entirely between the outermost ends of the two substrates.

According to the present invention, in addition to the pair of side seal portions, the other side seal portion is also entirely filled with the sealing material between the outermost ends of the substrate, thereby eliminating the external terminal portions. Since the space between the other liquid crystal enclosing regions adjacent to the bent portion can be reduced, the arrangement density of the liquid crystal enclosing regions on the mother substrate can be further increased, and the frame can be further narrowed.

In the present invention, the substrate is preferably a flexible substrate such as a resin substrate.

According to the present invention, since the substrate is a flexible substrate (plastic or film substrate), when the portion where the sealing material is disposed is cut, it can be cut together with the sealing material by shearing. A structure in which the sealing material is filled up to the space between the outermost ends of the substrate can be easily manufactured. As a method other than shearing, cutting with a cutter or the like is also possible.

Next, according to the method of manufacturing a liquid crystal device of the present invention, two mother substrates are attached to each other through a sealing material provided with a liquid crystal filling port while covering each of a plurality of liquid crystal sealing regions. A method of manufacturing a liquid crystal device for injecting liquid crystal into the liquid crystal filling region from an inlet and then sealing the liquid crystal filling hole, wherein a plurality of the liquid crystal filling regions are arranged in tandem on the mother substrate, Wiring is drawn out from inside the liquid crystal sealing area on one side of the column, an external connection portion is provided, the liquid crystal injection port is provided on the other side of the row of the liquid crystal sealing area, and the sealing material has Along the one side and the other side of the row, the one-side seal portion arranged along the external terminal portion and the other-side seal portion provided with the liquid crystal injection port are formed to extend, and the space between the adjacent liquid crystal sealing regions is formed. Separate the other side seal part An integral partition seal portion connected to the one-side seal portion is formed, and then, the two mother substrates are bonded to each other, and the liquid crystal is sealed in the liquid crystal fill region. A plurality of liquid crystal devices are separated by cutting a portion where the partition seal portion is formed in an extending direction so that a material remains.

Further, each of the plurality of liquid crystal enclosing regions is covered with a sealing material provided with a liquid crystal injection port.
A method of manufacturing a liquid crystal device, comprising: bonding a plurality of mother substrates, injecting liquid crystal into the liquid crystal filling region from the liquid crystal injection port, and sealing the liquid crystal injection port, wherein a plurality of the liquid crystals are provided on the mother substrate. A plurality of columns formed by arranging the sealing regions in a row are arranged in parallel, and an external connection portion is provided on one side of the column of the liquid crystal sealing region by drawing out wiring from the inside of the liquid crystal sealing region. The liquid crystal injection port is provided on the side, and the sealing material includes a one-side seal portion and the liquid crystal injection port arranged along the external terminal portion along one side and the other side of the row of the liquid crystal sealing region. The other seal portion provided is formed to be extended, and after bonding the two mother substrates via the seal material, the formation site of the other seal portion is extended so that the seal material remains on both sides. Cut in one direction to form With separate into strips including said is opened the liquid crystal injection port to the outside, then, it is characterized by filling liquid crystal into the liquid crystal filling area.

Further, two mother substrates are attached to each other through a sealing material provided with a liquid crystal filling port while covering each of the plurality of liquid crystal filling areas, and liquid crystal is injected into the liquid crystal filling area from the liquid crystal filling port. Then, a method of manufacturing a liquid crystal device for sealing the liquid crystal injection port, wherein a plurality of rows of a plurality of the liquid crystal encapsulation regions arranged in tandem on the mother substrate are arranged in parallel, On one side, a wiring is drawn out from the inside of the liquid crystal sealing area to provide an external connection portion, the liquid crystal filling port is provided on the other side of the row of the liquid crystal sealing area, and the sealing material has The one-side seal portion arranged along the external terminal portion along the one side and the other side and the other-side seal portion provided with the liquid crystal injection port are formed to be extended, and an integral partition between the adjacent liquid crystal sealing regions is formed. Forming a partition seal part Then, by cutting the formation portion of the other-side seal portion in the extension direction so that the seal material remains on both sides, and thereby separating into a strip including the liquid crystal enclosing region in a row, the liquid crystal injection port is After the liquid crystal is sealed in the liquid crystal sealing area, a portion where the partition seal portion is formed is cut in the extension direction so that the sealing material remains on both sides, and then separated into a plurality. Is formed.

In the present invention, the mother substrate is preferably a flexible substrate.

According to the present invention, since the substrate is a flexible substrate (plastic or film substrate), when the portion where the sealing material is disposed is cut, the portion can be cut together with the sealing material by shearing or the like. In addition, it is possible to easily manufacture a structure in which the sealing material is filled between the outermost ends of the substrate.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a liquid crystal device and a method for manufacturing the same according to the present invention will be described in detail with reference to the accompanying drawings.

[First Embodiment] FIG. 1 is a schematic plan view showing a planar structure of a liquid crystal device 200 (liquid crystal panel) according to a first embodiment of the present invention. In the liquid crystal device 200, two substrates 210 and 220 formed by cutting the motherboard 21 and the motherboard 22 are attached to each other with a sealant 23 interposed therebetween. It is enclosed. The substrate 210 and the substrate 220 are flexible substrates made of plastic and have, for example, a structure in which a plurality of resin layers are stacked.

On the inner surface of the substrate 210, a large number of stripe-shaped transparent electrodes 21a are formed in parallel.
Are drawn out of the display area E, respectively, are passed just below the sealing material 23 as a wiring layer, and are further drawn out to the end of the substrate 210, and the leading end is an external terminal 21b. On the surface of the transparent electrode 21a, a known insulating film (top coat film) for preventing vertical conduction, an alignment film for aligning liquid crystal, and the like are formed. Also, the external terminal 21
b, a plurality of external terminals 21c
Are arranged, and these external terminals 21 c
0 to a position overlapping with the formation site of the sealing material 23.

On the other hand, on the inner surface of the substrate 220, a number of stripe-shaped transparent electrodes 22a extending in a direction perpendicular to the transparent electrodes 21a are formed. The transparent electrode 22a is drawn out from the display area E to become a wiring layer, and is further drawn out to a portion where the sealing material 23 is formed. In the present embodiment, the sealing material 23 is made of resin (for example, thermosetting resin or photocurable resin) and conductive particles (for example, resin particles whose outer surfaces are covered with a conductive film (Ni plating film, Au plating film, or the like)). When the mother substrate 21 and the mother substrate 22 are bonded together via a sealing material 23 and pressurized, electrical conduction is provided in a substrate gap direction (substrate thickness direction), but in a planar direction (substrate surface direction). Has an anisotropic conductivity without electrical conduction. And the transparent electrode 2
The position where the second electrode 2a extends and overlaps the sealing material 23 and the position where the external terminal 21c extends and overlaps the sealing material 23 overlap each other on a plane.
The portion of the sealing material 23 sandwiched between the extension of the terminal a and the extension of the external terminal 21c is a vertical conducting portion 23f due to the above-described anisotropic conductivity.

The above-mentioned external terminal 21b and external terminal 21c
Indicates that the substrate 210 extends beyond the substrate 220
Are formed in an array at the exposed end. The external terminals 21b and 21c are conductively connected to a wiring connection member (not shown) such as a heat seal or a flexible wiring board.

The sealing material 23 is formed in a rectangular frame-like planar shape, and has a front-side sealing portion 2 having a liquid crystal injection port 23a.
3b, a rear side seal portion 23c formed on the opposite side of the front side seal portion 23b, and a pair of side side seal portions 23d and 23e connecting the front side seal portion 23b and the rear side seal portion 23c.
And four sides. The above-mentioned external terminal 21b
The external terminals 21c are arranged along the outside of the rear side seal portion 23c. That is, the liquid crystal injection port 23a, the external terminal 21b, and the external terminal 21c are disposed outside the sealant 23 and at positions opposite to each other with the liquid crystal sealing area A interposed therebetween.

In this embodiment, unlike the conventional liquid crystal device 100, the pair of side seal portions 23d and 23e
10 and the substrate 220 is filled up to the outer edge of the substrate,
No substrate gap is formed at the outer edge of the substrate. Therefore,
When injecting the liquid crystal from the liquid crystal injection port 23a, even if the liquid crystal infiltrates into the gap between the substrates outside the front side seal portion 23b due to the capillary phenomenon, the pair of side side seal portions 23d and 23d.
Since no substrate gap is formed outside e, the liquid crystal stops moving at the side seal portions 23d and 23e. As a result, the liquid crystal is unlikely to adhere to the outer surfaces of the side seal portions 23d and 23e and the external terminal 21b and the external terminal 21c formed on the opposite side of the liquid crystal injection port 23a with the liquid crystal enclosing area A interposed therebetween. The cleaning operation after sealing the liquid crystal is facilitated, and the amount of the remaining liquid crystal adhered is reduced. Therefore, the liquid crystal device 2 may be electrically eroded by the external terminals 21b and 21c.
In addition to reducing the number of defects in the liquid crystal, the amount of liquid crystal used is also reduced, so that the manufacturing cost can be reduced.

In this embodiment, the side seal portions 23d and 23e of the sealing material 23 are formed without leaving a substrate gap at the outer edges of the substrates 210 and 220. When viewed as a reference, the area of the display region E can be relatively large. Therefore, it is possible to cope with the recent miniaturization of the device mounted with the liquid crystal device 200, and it is possible to secure a large display area (narrow the frame) despite the miniaturization of the device.

[Second Embodiment] Next, a second embodiment of the present invention as an embodiment of a method of manufacturing the liquid crystal device 200 of the first embodiment will be described in detail. In this embodiment, as shown in FIG. 2, two large mother substrates 21 and 22 made of resin are prepared, and the transparent electrodes 21a and 22a and the external terminals 21b and 21c are formed on their inner surfaces. Then, the uncured sealing material 23 is arranged in a rectangular frame shape for each liquid crystal enclosing area A on one mother substrate by a dispenser or the like. Then, the other mother substrates are superimposed on each other, a predetermined pressure is applied thereto, and the substrates are bonded together via the sealing member 23 to form the original panel 20. At this time, a liquid crystal injection port 23a is formed in the seal member 23 on the opposite side of the liquid crystal sealing area A with respect to a place (external terminal portion) where the external terminals 21b and 21c are formed.

In this embodiment, when the sealing material 23 is disposed on one mother substrate, the portions to be the side sealing portions 23d and 23e of the adjacent liquid crystal sealing region A are formed as an integral partitioning sealing portion 23g. I do. The partition seal portion 23g facilitates a cutting operation along a separation line C described later, and reduces sealing failure of the liquid crystal device 200 (for this purpose, the seal portion is preferably wide). At the same time, the ratio of the area (display area) of the display region E to the outer shape of the liquid crystal device 200 is increased (the frame is narrowed) (the sealing portion is preferably narrower for this purpose). It is preferable that the front seal portion 23b and the rear seal portion 23c are formed to be slightly wider than the front seal portion 23b and the rear seal portion 23c.

Next, in the above structure, the separation line B shown in the figure is used.
Are cut along the front and back two mother substrates 21 and 22. At this time, since the mother substrates 21 and 22 are flexible substrates, the mother substrates 21 and 22 are cut by performing shearing with a cutter having a cutting edge along the separation line B. By cutting along the separation line B, the original panel 20 becomes a strip panel having the shape shown in FIG. Next, the strip panel is introduced into the chamber, and in a state where the pressure in the chamber is reduced, a liquid crystal is brought into contact with the liquid crystal injection port 23a of the strip panel.
It is assumed that a is closed by the liquid crystal. In the present embodiment, the lower end of the strip panel in which the liquid crystal injection port 23a is formed is immersed in the liquid crystal. The liquid crystal may be dropped near the liquid crystal injection port 23a. In this state, the pressure in the chamber is increased, and the liquid crystal is injected into the liquid crystal sealing region A by the pressure difference between the inside and the outside. When all the liquid crystal is injected into the liquid crystal sealing area A,
The liquid crystal injection port 23a is closed by the sealing material 24. Lastly, only the motherboard 22 is cut along the separation line D to expose the external terminals 21b and 21c. Further, the motherboards 21 and 22 are cut along the separation line C by shearing to separate the individual liquid crystal devices 200. To separate.

In this embodiment, since the separation line C extends along the center in the width direction of the partition seal portion 23g, when the mother substrates 21 and 22 are cut along the separation line C, the sealing material 2
3 are left in two adjacent liquid crystal devices 200, respectively.
These remaining portions become the side seal portions 23d and 23e in the respective liquid crystal devices 200. In the present embodiment, even if the liquid crystal is injected in the state shown in FIG. 3, the side seal portions 23d and 23e of the adjacent liquid crystal devices 200 are formed.
Since the portion to be formed is formed as an integral partition seal portion 23g, the liquid crystal does not flow from the front side seal portion 23b, and the liquid crystal does not adhere to the rear side seal portion 23c. Therefore, the cleaning operation for removing the liquid crystal is facilitated, and product defects due to the adhesion of the liquid crystal can be reduced. In addition, the integral partition seal portion 2
The formation of 3 g makes it possible to secure a large display area with respect to the size of the original panel 20, so that the amount of expensive flexible substrates used can be reduced, and Since the peripheral portion that does not contribute to the display of each liquid crystal device 200 (so-called outside portion of the partition) can be narrowed (narrowed frame), it is possible to achieve both an increase in the display area of the liquid crystal device 200 and a reduction in size.

[Third Embodiment] Next, the structure of a liquid crystal device 300 according to a third embodiment of the present invention will be described with reference to FIG. The liquid crystal device 300 is a liquid crystal device having a different detailed structure from the liquid crystal device 200 shown in FIG. 1, but includes substrates 310 and 320, transparent electrodes 31a and 32a, and external terminals 3.
1b, 31c, and the sealing material 34 are the same as those described in the first embodiment.

In the present embodiment, a non-conductive material is used as the sealing material 33, and is made of, for example, a simple insulating resin (a thermosetting resin or a photo-setting resin). Further, on the outer side of the seal member 33, the upper and lower conductive members 35, 3 made of the same material as the seal member 23 of the first embodiment.
6 is formed so as to connect between the substrate 310 and the substrate 320. The transparent electrode 32 a formed on the inner surface of the substrate 320 is drawn out of the display area E, extends as a wiring layer, and further passes under the sealing material 33, and the upper and lower conductive materials 35,
It extends to a position overlapping 36. On the other hand, the external terminals 31c formed on the inner surface of the substrate 310 also
It extends to the position overlapping 5,36. In this way, the transparent electrode 3 is passed through the vertical conductive material 35 and the vertical conductive material 36.
2a and the external terminal 31c are conductively connected.

The flexible wiring board 37 is connected to the external terminals 31b and the external terminals 3 via an anisotropic conductive film (not shown).
1c has a wiring pattern conductively connected thereto, and is conductively connected to a liquid crystal driving circuit (IC) (not shown) or the like. A liquid crystal driving circuit or the like may be formed instead of the flexible wiring substrate 37, or a wiring substrate (for example, a TAB substrate) on which a liquid crystal driving IC is mounted may be connected.

Also in this embodiment, the liquid crystal injection port 33
a between the formation portion of a and the rear-side seal portion 33c in which the external terminals 31b and 31c are formed on the outer side, the side-side seal portions 33d and 3 in which the sealing material is filled at the substrate interval up to the outer edge of the substrate.
3e is provided. Therefore, at the time of liquid crystal injection, the liquid crystal hardly adheres to the side seal portions 33d and 33e, and the liquid crystal does not enter the gap between the substrates outside the rear seal portion 33c. In addition, the side seal portion 33d
In addition, since there is no substrate gap outside the side seal portion 33e, the display area E can be formed larger than the outer shape of the liquid crystal device 300. Therefore, the size of the liquid crystal device 300 can be reduced, or the display area can be reduced. Increase can be achieved.

[Fourth Embodiment] Next, a liquid crystal device 400 according to a fourth embodiment of the present invention will be described with reference to FIG. In this embodiment, the liquid crystal device 200 basically has substantially the same structure as that of the liquid crystal device 200 of the first embodiment, and a substantially similar substrate 4.
10, 420, transparent electrodes 41a, 42a, sealing material 43
It has. In this embodiment, the external terminals 41b and 41c that are conductively connected to (integrated with) the transparent electrode 41a and the transparent electrode 42a, respectively, are integrated with the liquid crystal driving integrated circuit 45.
Are formed in a pattern shape corresponding to the output terminal (not shown). Then, the external terminal 41b and the external terminal 41
The liquid crystal driving integrated circuit 45 is mounted on a protruding portion of the substrate 410 on which c is formed (a portion protruding outside the outer edge of the substrate 420 and exposing the inner surface). The input terminals (not shown) of the liquid crystal driving integrated circuit 45 are conductively connected to a plurality of terminal patterns 46 separately formed on the surface of the overhang portion, and these terminal patterns 46 are provided with flexible wiring. The substrate 47 is conductively connected as in the third embodiment.

In this embodiment, not only the side sealing portions 43d and 43e as in the above embodiment, but also the front sealing portion 43b of the sealing material 43 is almost completely filled with the sealing material up to the outer edge of the substrate. I have. Therefore, when injecting the liquid crystal into the liquid crystal sealing region A from the liquid crystal injection port 43a, the liquid crystal does not enter the gap between the substrates along the front-side seal portion 43b, and the useless use of the liquid crystal is reduced.
In addition, the cleaning operation is facilitated, and product defects due to liquid crystal adhesion are reduced.

[Fifth Embodiment] Next, a fifth embodiment of the method of manufacturing the liquid crystal device 400 will be described in detail with reference to FIGS. In this embodiment, as shown in FIG. 6, two mother substrates 41 and 42 in which a plurality of liquid crystal enclosing areas A are arranged are attached via a sealing material 43 formed so as to surround each liquid crystal enclosing area A. Combination, original panel 40
To form

At this time, the sealing material 43 is such that the portions to be the side sealing portions 43d and 43e between the adjacent liquid crystal sealing regions A are integral partitioning sealing portions 43g,
Similarly to the above, the separation line C is set so as to extend along the center in the width direction of the partition seal portion 43g. The partition seal portion 43g is cut along with the mother substrates 41 and 42 along the separation line C, and becomes the side seal portions 43d and 43e of the adjacent liquid crystal sealing region A as shown in FIG. in this case,
Similarly to the above, the partition seal portion 43g is preferably formed to be wider than other portions of the seal material 43, and particularly to be formed to have a width approximately twice as large as other portions of the seal material 43. desirable.

Also, in the present embodiment, the separation line B is set along the center in the width direction of the front side seal portion 43h to be the front side seal portion 43b, and the original panel 40 is cut along the separation line B. Then, the front seal portion 43h is also configured to be divided into two in the width direction. As a result, the front-side seal portion 43b is already filled up to the outer edge of the substrate in a state of a strip panel as shown in FIG. 7, and the front-side seal portion 43b is formed.
Is configured such that there is no substrate gap outside the substrate. In this case, similarly to the above, the front seal portion 43h is
It is preferable that the sealing member 43 be formed to have a width approximately twice as large as that of the other portion.

In the present embodiment, the original panel 40 shown in FIG. 6 is cut along the separation line B to obtain a strip panel shown in FIG. 7, and the liquid crystal is injected and the liquid crystal is sealed by the sealing material 44. Exposure of external terminals by separation line D, separation line C
The process of separating the liquid crystal device 400 by cutting along the line is the same as in the second embodiment.

In this embodiment, since the front sealing portion 43h is cut so as to be divided along the extension direction thereof, the front sealing portion 43b provided with the liquid crystal injection port 43a in the liquid crystal device is also connected to the outer edge of the substrate. Since the liquid crystal is formed between them, it is possible to almost completely prevent the liquid crystal from penetrating into the gap between the substrates, and the cleaning operation becomes easy. Also, the front side seal part 4
By forming 3b up to the outer edge of the substrate, the frame of the liquid crystal device can be further narrowed.

It should be noted that the liquid crystal device and the method of manufacturing the same according to the present invention are not limited to the above illustrated examples, and various changes can be made without departing from the scope of the present invention.

[0047]

As described above, according to the present invention,
By providing an outer edge portion between the liquid crystal inlet and the external connection portion, which is filled with a sealing material up to the outermost end of the two substrates, a seal is provided when the liquid crystal comes into contact with the vicinity of the liquid crystal inlet. Even if the liquid crystal penetrates into the gap between the substrates outside the material due to the capillary phenomenon, the liquid crystal is blocked by the outer edge portion and does not reach the external terminal portion, so that problems due to the adhesion of the liquid crystal can be reduced.

Further, when manufacturing is performed using a mother substrate in which a plurality of liquid crystal sealing regions are arranged, it is possible to integrate a similar side sealing portion with another liquid crystal sealing region adjacent to the side sealing portion. As a result, the arrangement density of the liquid crystal sealed region in the mother substrate can be increased, so that the manufacturing cost can be reduced. Further, since the side seal portion is formed between the outermost ends of the substrate, a large display area can be secured with respect to the outer shape of the liquid crystal device, and the frame of the liquid crystal device can be narrowed.

[Brief description of the drawings]

FIG. 1 is a plan perspective view schematically showing a planar structure of a first embodiment of a liquid crystal device according to the present invention.

FIG. 2 is a perspective plan view showing a schematic plan structure of an original panel showing a second embodiment of the method for manufacturing a liquid crystal device according to the present invention.

FIG. 3 is a perspective plan view showing a schematic planar structure of a strip panel according to a second embodiment of the method for manufacturing a liquid crystal device according to the present invention.

FIG. 4 is a perspective plan view schematically showing a planar structure of a liquid crystal device according to a third embodiment of the present invention.

FIG. 5 is a perspective plan view schematically illustrating a planar structure of a liquid crystal device according to a fourth embodiment of the invention.

FIG. 6 is a perspective plan view showing a schematic plan structure of an original panel showing a fifth embodiment of the method for manufacturing a liquid crystal device according to the present invention.

FIG. 7 is a perspective plan view illustrating a schematic planar structure of a strip panel according to a fifth embodiment of the method for manufacturing a liquid crystal device according to the present invention.

FIG. 8 is a perspective plan view showing a schematic plan structure of an original panel showing a conventional method for manufacturing a liquid crystal device.

FIG. 9 is a perspective plan view showing a schematic planar structure of a strip panel showing a conventional method for manufacturing a liquid crystal device.

[Explanation of Symbols] A: liquid crystal sealing area E: display area 20: original panel 21: mother board 21a: transparent electrode 21b ... external terminal 21c: external terminal 22: mother board 22a: transparent electrode 23: sealing material 23a: liquid crystal note Entrance 23b Front sealing part 23c Rear sealing part 23d Side sealing part 23e Side sealing part 23g Partition sealing part 31b External terminal 31c External terminal 32a Transparent electrode 33 Sealing material 33d Side Seal part 33e Side seal part 35 Vertical conductive material 36 Vertical conductive material 37 Flexible wiring board 40 Original panel 41 Mother board 41a Transparent electrode 41b External terminal 41c External terminal 42a Transparent electrode 43 Seal Material 43b: Front-side seal portion 43d: Side-side seal portion 43g: Partition seal portion 43h: Front-side seal portion 45: Liquid crystal drive integration circuit Road 46 ... Terminal pattern 200 ... Liquid crystal device 210 ... Substrate 220 ... Substrate 300 ... Liquid crystal device 310 ... Substrate 320 ... Substrate 400 ... Liquid crystal device 410 ... Substrate 420 ... Substrate

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroyuki Hosoya 3-3-5 Yamato, Suwa-shi, Nagano Seiko Epson Corporation (72) Inventor Shoji Hyuga 3-5-35 Yamato, Suwa-shi, Nagano Seiko -F term in Epson Corporation (reference) 2H088 FA04 FA06 FA07 FA10 FA28 FA29 HA01 MA16 MA20 2H089 KA01 KA10 LA41 PA13 PA15 QA12 TA01 TA03 TA06 2H090 JB03 JC13 JC15

Claims (10)

[Claims] 1. A liquid crystal display device comprising: two substrates bonded together via a sealing material that covers a liquid crystal sealing region;
A liquid crystal injection port provided for injecting liquid crystal therein and a sealing portion for closing the liquid crystal injection port are formed, and an external terminal is drawn out of the sealing material from inside the liquid crystal sealing area. A liquid crystal device having an external connection portion,
An outer edge portion filled with the sealant between at least the outermost ends of the two substrates between at least the liquid crystal inlet and the external connection portion when viewed in the extension direction of the sealant. Characteristic liquid crystal device. 2. The liquid crystal display device according to claim 1, wherein the external connection portion is provided outside a one-side seal portion of the sealing material, and the liquid crystal injection port is opposed to the one-side seal portion with the liquid crystal sealing region interposed therebetween. A pair of side seals facing each other are provided on the other seal of the seal material disposed on the side, and formed to connect the one seal and the other seal. A liquid crystal device, wherein outer peripheral portions of the two substrates that are filled with the sealing material up to the outermost ends are formed in the pair of side sealing portions. 3. The outer edge portion in which the sealing material is filled up to an interval between outermost ends of the two substrates according to claim 2,
A liquid crystal device, wherein the liquid crystal device is provided over the entire side seal portion. 4. The liquid crystal according to claim 3, wherein the other side seal portion except for the liquid crystal injection port is also entirely filled with a seal material between outermost ends of the two substrates. apparatus. 5. The method according to claim 1, wherein:
3. The liquid crystal device according to claim 1, wherein the substrate is a flexible substrate. 6. A liquid crystal is injected into the liquid crystal sealing area from the liquid crystal injection hole by bonding two mother substrates through a sealing material provided with a liquid crystal injection hole while covering each of the plurality of liquid crystal sealing areas. And then manufacturing a liquid crystal device for sealing the liquid crystal injection port, wherein a plurality of the liquid crystal enclosing regions are arranged in tandem on the mother substrate, and one side of a column of the liquid crystal enclosing region is provided in the liquid crystal enclosing region. An external connection portion is provided by drawing out a wiring from the liquid crystal filling region, the liquid crystal injection port is provided on the other side of the row of the liquid crystal sealing region, and the sealing material includes
The one-side seal portion disposed along the external terminal portion along one side and the other side of the row of the liquid crystal sealing region and the other-side seal portion provided with the liquid crystal injection port are formed to extend and are adjacent to each other. Forming an integral partition seal portion connected between the other-side seal portion and the one-side seal portion so as to partition between the liquid crystal enclosing regions, and thereafter, bonding the two mother substrates together to form the liquid crystal encapsulation. A liquid crystal device characterized in that a plurality of liquid crystal devices are separated by sealing a liquid crystal in a region, and then cutting a formation portion of the partition seal portion in an extending direction thereof so that the sealing material remains on both sides. Production method. 7. A plurality of mother substrates are bonded together via a sealing material provided with a liquid crystal filling port while covering each of the plurality of liquid crystal filling areas, and liquid crystal is injected from the liquid crystal filling port into the liquid crystal filling area. Then, a method for manufacturing a liquid crystal device for sealing the liquid crystal injection port, wherein a plurality of columns in which a plurality of the liquid crystal sealing regions are arranged in tandem on the mother substrate are arranged in parallel, On one side, a wiring is drawn out from the inside of the liquid crystal sealing area to provide an external connection portion, the liquid crystal filling port is provided on the other side of the row of the liquid crystal sealing area, and the sealing material has One side seal portion disposed along the external terminal portion along one side and the other side and the other side seal portion provided with the liquid crystal injection port are formed to be extended, and the two mother plates are provided via the seal material. After attaching the substrates, With separate into strips including the liquid crystal filling area of a row by cutting the portions of the barrier on the other side sealing part as wood remains in its extending direction, thereby opening the liquid crystal injection port to the outside,
Thereafter, a liquid crystal is sealed in the liquid crystal sealed region, the method for manufacturing a liquid crystal device. 8. A plurality of mother substrates are bonded together via a sealing material provided with a liquid crystal filling port while covering each of the plurality of liquid crystal filling areas, and liquid crystal is injected from the liquid crystal filling port into the liquid crystal filling area. Then, a method for manufacturing a liquid crystal device for sealing the liquid crystal injection port, wherein a plurality of columns in which a plurality of the liquid crystal sealing regions are arranged in tandem on the mother substrate are arranged in parallel, On one side, a wiring is drawn out from the inside of the liquid crystal sealing area to provide an external connection portion, the liquid crystal filling port is provided on the other side of the row of the liquid crystal sealing area, and the sealing material has The one-side seal portion arranged along the external terminal portion along the one side and the other side and the other-side seal portion provided with the liquid crystal injection port are formed to be extended, and an integral partition between the adjacent liquid crystal sealing regions is formed. To form a partition seal Thereafter, the formation site of the other-side seal portion is cut in the extension direction so that the seal material remains on both sides, thereby separating into a strip shape including the liquid crystal enclosing region in a row, and the liquid crystal injection port is connected to the outside. After that, the liquid crystal is sealed in the liquid crystal sealed area, and then the partition seal portion forming portion is cut in the extending direction so that the seal material remains on both sides, thereby separating the liquid crystal into a plurality of portions. A method for manufacturing a liquid crystal device, comprising forming a liquid crystal device. 9. Any one of claims 6 to 8
9. The method for manufacturing a liquid crystal device according to claim 1, wherein the mother substrate is a flexible substrate. 10. The method according to claim 9, wherein the cutting is performed by shearing.