JP2001264777A - Liquid crystal cell - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid crystal cell which realizes a lightweight small-size liquid crystal display device and which can maintain excellent display quality even in a high humidity environment. SOLUTION: A display region 106 separated by an inner sealing part 105 and a filler region 108 separated by an outer sealing part 107 outside of the display region 106 are formed between substrates 101 and 102. A liquid crystal layer 103 is sealed in the display region 106 and a filler 111 is sealed in the filler region 108 so that minute amount of water molecules permeating through the outer sealing part 107 are trapped by the filler 111 and intrusion of the water molecules into the inner sealing part 105 is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal cell having excellent moisture proof properties, and more particularly to a liquid crystal cell suitable for a guest-host type liquid crystal display device.

[0002]

2. Description of the Related Art In recent years, liquid crystal display devices have been widely used as display devices for portable information devices because of their features of light weight, thinness, and low power consumption. Particularly recently, in order to obtain a bright and clear image, T
An active matrix type liquid crystal display device in which an FT (thin film transistor) is arranged is becoming mainstream.

[0003] Among liquid crystal display devices, especially those which are intended to be used indoors, the moisture can be sufficiently shut off by a normal sealing member which covers the periphery of the liquid crystal cell. The voltage holding ratio does not decrease so much as to hinder driving. However, for devices mainly used outdoors, such as portable information devices, the surrounding environment surrounding the liquid crystal cell is much harsher than that indoors, so the structure using the conventional sealing member In such a case, the interception of moisture or the like becomes insufficient, which sometimes hinders the driving of the TFT.

[0004] In recent years, marine leisure has become popular, and especially in small vessels, liquid crystal display devices having a high degree of freedom in installation locations have been attracting attention.
It is often used as a display device for S and the like. The liquid crystal display device exposed to such a severe environment has a remarkable deterioration in display performance due to the above-mentioned reasons, and there has been a problem that the life is shortened. Conventionally, a countermeasure has been taken by attaching a waterproof frame outside the liquid crystal cell.

[0005]

However, the conventional waterproof frame has the problem that the external dimensions are large and heavy in order to enhance the waterproof function, and the display area is difficult to see because the ratio of the display area to the area of the outer frame is small. There was a point.
Further, the conventional waterproof frame can block water as a bulk in the outer frame, but has a small blocking effect on water molecules that behave as gas (humidity). In such a case, the display quality may be degraded due to the decrease in the resistance value of the liquid crystal and the resulting decrease in the voltage holding ratio. Such a problem becomes more prominent in the guest-host type liquid crystal display device described below.

A guest-host type (hereinafter referred to as GH type) liquid crystal in which a dye having a large dichroic ratio is dissolved in a liquid crystal has advantages such as a large viewing angle, and is one of the liquid crystal materials expected in the future. It is considered. In particular, in recent years, demand for color displays has been increasing, and GH type color liquid crystal display devices have been actively developed.

However, it has been very difficult to ensure the reliability of the GH type liquid crystal. because,
This is because the GH type liquid crystal lowers the voltage holding ratio due to factors such as decomposition of the dye molecules and mixing of ionic impurities. Moreover, since polar compounds such as dyes have the property of extracting inorganic ions from glass substrates and the like, if water is present here, the mobility of the dissolved inorganic ions will increase dramatically, and the electrical resistance value will increase. It drops sharply, and the voltage holding ratio also drops significantly. For this reason, in the GH type liquid crystal cell, the degree of decrease in the voltage holding ratio due to the entry of moisture is much larger than in other liquid crystal cells. Since there is no solution to this problem, the practical use of a TFT-driven liquid crystal display device using a GH type liquid crystal cell has been delayed.

An object of the present invention is to realize a liquid crystal display device which is light and small in size, and which can maintain excellent display quality even when exposed to a humid environment for a long time. It is to provide a liquid crystal cell.

[0009]

Means for Solving the Problems To achieve the above object, a first aspect of the present invention is a liquid crystal cell comprising a liquid crystal composition sandwiched between substrates disposed at predetermined intervals, wherein A first region partitioned by a first seal portion;
A second region partitioned by a second seal portion is formed outside the first region, a liquid crystal composition is sealed in the first region, and a filler is filled in the second region. Is enclosed.

A second aspect of the present invention is characterized in that, in the first aspect, the liquid crystal composition is sealed as the filler.

In a preferred embodiment, the filler and the injection hole for the liquid crystal composition are provided at the same position in the liquid crystal cell.

A third aspect of the present invention is characterized in that, in the first aspect, the filler is a medium having a water molecule capturing function.

According to a fourth aspect of the present invention, in the first or second aspect, the liquid crystal composition is a GH type liquid crystal.

According to a fifth aspect of the present invention, in the first aspect, the material of the first and second seal portions is a resin material containing at least a halogenated ethylene resin.

In a preferred embodiment, the resin material containing the halogenated ethylene resin is a trifluorinated ethylene resin, a trifluorinated ethylene resin, a difluorinated ethylene chloride resin,
A resin material containing a halogenated ethylene resin such as a monofluorinated ethylene trichloride resin and an ethylene tetrachloride resin is used.

According to the above configuration, when the liquid crystal cell is exposed to a humid environment, the second seal portion is exposed to water molecules which behave as a gas. Even if the water molecules pass through
Is trapped by the filler encapsulated in the area of
Does not pass through the seal portion, and the entry into the liquid crystal layer is blocked.

According to another aspect of the present invention, there is provided an electronic apparatus comprising:
According to the invention, in a liquid crystal cell having a liquid crystal composition sandwiched between substrates opposed to each other at a predetermined interval, the entire outside of the liquid crystal cell is covered with a halogenated ethylene resin in a bag shape.

According to a seventh aspect of the present invention, in the sixth aspect, the four sides of the liquid crystal cell are covered with a halogenated ethylene resin in a frame shape.

In a preferred embodiment, the halogenated ethylene resin includes a trifluorinated ethylene resin, a trifluorinated ethylene resin, a difluorinated ethylene chloride resin, a fluorinated ethylene trichloride resin, and a tetrachloride ethylene resin. Or a resin material containing one or more resins selected from this group.

According to the above structure, when the liquid crystal cell is exposed to a humid environment, the halogenated ethylene resin covering the entire outside of the cell is exposed to water molecules which behave as a gas. Since the ethylene fluoride resin has excellent moisture-proof properties, water molecules do not pass through the resin, and the entry into the liquid crystal layer is blocked.

[0021]

Embodiments of a liquid crystal cell according to the present invention will be described below with reference to the drawings. In this embodiment, electrodes, wirings, and other parts formed on the substrate are not shown.

[Embodiment 1] FIGS. 1A and 1B are schematic structural views of a liquid crystal cell 100 according to Embodiment 1, wherein FIG. 1A is a schematic plan view showing the structure of a seal portion, and FIG. It is an outline sectional view.

Array substrate 10 constituting liquid crystal cell 100
1 and the opposing substrate 102 are opposingly arranged at predetermined intervals,
A liquid crystal layer 103 is sandwiched between these substrates. On the main surfaces of the array substrate 101 and the counter substrate 102, an alignment film 104 is formed on a surface layer which is in contact with the liquid crystal layer 103, in addition to electrodes and wirings (not shown).

An inner space of the liquid crystal cell 100 has a display area 106 partitioned into a rectangular shape by an inner seal portion 105,
Outer seal portion 1 formed outside display area 106
07 and a filler region 108 divided in a corridor by the inner seal portion 105. The display area 106 is an area in which the GH type liquid crystal layer 103 is sealed, and the display area 106 serves as a display section of an image. The filler region 108 is a region in which a later-described filler 109 is sealed, and the filler region 108 serves as a trapping portion for water molecules entering from the outside. Injection holes 109 and 110 are provided at the same position in the display region 106 and the filler region 108.

Inner seal part 105 and outer seal part 10
7 is an array substrate 10 formed by, for example, screen printing.
1 or one of the opposing substrates 102. It is desirable that the resin material used for the seal portion has excellent moisture-proof properties. For example, ethylene trifluoride resin, ethylene trifluoride resin, ethylene dichloride resin, ethylene trichloride resin, ethylene tetrachloride resin, etc. It is desirable to use a resin material containing a halogenated ethylene resin.

The filler 111 filled in the filler region 108 is preferably a medium having a water molecule capturing function. In the first embodiment, the same GH type liquid crystal as the liquid crystal layer 103 is used.

In the liquid crystal cell 100 of the first embodiment, since the injection holes 109 and 110 are formed at the same location,
When the same liquid crystal composition as the liquid crystal layer 103 is filled as the filler 111, the display region 106 and the filler region 108
GH type liquid crystal can be filled by the same injection step. Therefore, the display region 106 and the filler region 108
As compared with the case where different contents are filled, the number of work steps is reduced, and the cost can be reduced by using the same material.

According to the liquid crystal cell 100 of the first embodiment, when the liquid crystal cell is exposed to a humid environment, the outer seal portion 107 is exposed to water molecules that behave as a gas. Even after passing through the outer seal 107, the trace water molecules are trapped in the filler region 108 by the dye molecules having a large polarity dissolved in the GH type liquid crystal. Absent. Therefore, even when the liquid crystal cell is exposed to a humid environment for a long time, the resistance of the liquid crystal layer 103 does not decrease and the deterioration of the display quality due to the decrease in the voltage holding ratio can be prevented.

By the way, in the conventional waterproof frame formed of a single seal portion, water as a bulk can be blocked by the outer frame, but the blocking effect is small for water molecules acting as gas. Therefore, if the cell is exposed to humid conditions for a long time, water molecules pass through the seal portion and enter the liquid crystal layer, causing a decrease in the resistance value of the liquid crystal.

Even if the seal portion has only a double structure, a small amount of water molecules passing through the outer seal portion 107 are cooled before reaching the inner seal portion 105 and liquefied into water as bulk. The inner seal portion 105 is not exposed to water molecules as gas, and the liquid crystal layer 103 is not exposed.
Water molecules can be blocked. However, if water accumulated between the seals of the double structure evaporates,
Since there is a possibility of entering the liquid crystal layer 103 through the inner seal portion 105, it is conceivable that the entry of water molecules cannot be blocked, especially in a high-temperature and high-humidity environment. On the other hand, as in the first embodiment, the filler 11
In the case where 1 is sealed, a small amount of water molecules that have passed through the outer sealing portion 107 are captured by the GH type liquid crystal as the filler 111, so that they do not evaporate inside, and even in a hot and humid environment. The entry of molecules into the liquid crystal layer 103 can be effectively blocked.

[Embodiment 2] FIG. 2 is a schematic plan view of a liquid crystal cell 200 according to Embodiment 2, and corresponds to FIG. 1A of Embodiment 1.

In the liquid crystal cell 200 of the second embodiment, the injection hole 209 in the display region 206 and the injection hole 210 in the filler region 208 are provided at different positions. When the same medium is sealed in the display region 106 and the filler region 108 as in the first embodiment, it is preferable to provide the injection hole at the same position in terms of work efficiency. Injection holes are provided at different positions in order to prevent the medium from being mixed in the vicinity of the injection holes in order to enclose different media in the material regions 208.

The filler 211 to be filled in the filler region 208
For example, it is preferable to use a water-absorbing substance such as silica gel fine particles, or a liquid in which the water-absorbing substance is dispersed on an appropriate medium.

Also in the liquid crystal cell 200 of the second embodiment, since a small amount of water molecules passing through the outer seal portion 207 are captured by the filler 211 in the filler region 208, the water molecules cannot pass through the inner seal portion 205. Absent. Therefore, even when the liquid crystal cell is exposed to a humid environment for a long time, the resistance of the liquid crystal layer 203 does not decrease, and the display quality does not deteriorate due to the decrease in the voltage holding ratio.

In the first or second embodiment, the position and the number of the injection holes are not limited to those shown in the figures, but can be changed as appropriate.

The liquid crystal cell according to the first or second embodiment described above does not cause a decrease in the resistance value of the liquid crystal layer even when exposed to a humid environment for a long time, and the display quality due to the decrease in the voltage holding ratio is reduced. Deterioration can be prevented. Therefore, particularly in a TFT driven liquid crystal display device using GH type liquid crystal, excellent display quality can be maintained, and a highly reliable liquid crystal cell can be provided.

Further, such a liquid crystal cell is suitable for a liquid crystal display device exposed to a severe environment such as marine leisure. For example, in the case of a marine GPS display, conventionally, the outer dimensions were large as shown in FIG. 3 and a heavy waterproof frame 220 was required. However, according to the present invention, as shown in FIG. Since a heavy waterproof frame is not required, the ratio of the display area 222 to the area of the outer frame 221 can be increased, and the display can be more easily viewed in addition to the reduction in size and weight.

Third Embodiment FIGS. 5A and 5B are schematic structural views of a liquid crystal cell 300 according to a third embodiment. FIG. 5A is a schematic plan view, and FIG.

In the liquid crystal cell 300 of the third embodiment, the entire outside of the cell is covered with a protective film 310 made of a halogenated ethylene resin in a bag shape. Although not shown in FIG. 5, a normal seal portion is formed between the substrates, and a liquid crystal layer 303 is filled in a display region 304 partitioned by the seal portion. The liquid crystal is injected from an injection hole (not shown), and the protective film 310 is covered after sealing the injection hole. The protective film 310 penetrates not only between the substrate surface but also between the array substrate 301 and the counter substrate 302, and is covered with no gap between the substrates so as to have a substantially convex cross section.

In the case of a liquid crystal cell in which a polarizing plate is attached, the protective film 3 is attached after the polarizing plate is attached to the outside of the substrate.
Cover 10

As the halogenated ethylene resin, for example, trifluorinated ethylene resin, trifluorinated ethylene resin,
Fluorinated ethylene chloride resin, fluorinated ethylene chloride resin,
It is desirable to use one or more resins selected from a group containing tetrachloride ethylene resin, or a resin material containing one or more resins selected from this group.

According to the liquid crystal cell 300 of the third embodiment, when the liquid crystal cell is exposed to a humid environment, the protective film 310 is exposed to water molecules that behave as a gas. Certain halogenated ethylene resins have excellent moisture proof properties, so that water molecules do not reach the display area 304 through the protective film 310. Therefore,
Even if the liquid crystal cell is exposed for a long time in a humid environment,
The display quality can be prevented from deteriorating due to a reduction in the voltage holding ratio without causing a decrease in the resistance value of the liquid crystal layer 303. In addition, as for the liquid crystal cell 300, as shown in FIG. 4, the size and weight of the liquid crystal display device can be reduced, and the display can be more easily viewed.

Since the protective film 310 covering the entire outside of the cell is colorless and transparent, it does not affect the image display. However, even if the protective film 310 is removed only in the portion corresponding to the display area 304, the moisture proof is obtained. Does not affect gender.

When such a liquid crystal cell 300 is applied to, for example, a portable liquid crystal display device driven by a solar cell,
It is also possible to use the liquid crystal cell in a state where it is completely covered. However, in a driving method using an external power supply, it is desirable that only the conductive portion be formed of conductive resin. Further, even in the case of a solar cell drive system, it is desirable to partially provide a conductive portion as a measure against static electricity.

[Fourth Embodiment] FIGS. 6A and 6B are schematic structural views of a liquid crystal cell 400 according to a fourth embodiment. FIG. 6A is a schematic plan view, and FIG.

In the liquid crystal cell 400 according to the fourth embodiment, four sides of the cell are covered with a protective film 410 made of a halogenated ethylene resin in a frame shape. This liquid crystal cell 4
Also in 00, a normal seal portion (not shown) is formed between the substrates, and a liquid crystal layer 403 is filled in a display region 404 partitioned by the seal portion. The liquid crystal is injected from an injection hole (not shown), and the protective film 410 is covered after sealing the injection hole. The protective film 410 penetrates not only between the ends of the substrates but also between the array substrate 401 and the opposing substrate 402, and is covered with no gap between the substrates so as to have a substantially convex cross section.

As the halogenated ethylene resin, the same one as in the third embodiment can be used.

Also in the liquid crystal cell 400 of the fourth embodiment, since the halogenated ethylene resin as the protective film 410 has excellent moisture proof properties, water molecules do not reach the display area 404 through the protective film 410. . Therefore, even when the liquid crystal cell is exposed to a humid environment for a long time, the resistance of the liquid crystal layer 403 does not decrease, and the deterioration of the display quality due to the decrease in the voltage holding ratio can be prevented. Also, as for the liquid crystal cell 400, as shown in FIG. 4, the size and weight of the liquid crystal display device can be reduced, and the display can be more easily viewed.

[0049]

Next, examples of the first to fourth embodiments will be described.

First, test results when the liquid crystal cells shown in Embodiments 1 and 2 and the liquid crystal cell of Comparative Example 1 (conventional example) are left under the same environment will be described.

Example 1 A liquid crystal cell having a gap of 10 μm between substrates was manufactured according to the cell structure shown in FIG. The inside / outside seal part is made by Nippon Kayaku
-3701P was used. As a liquid crystal material, LIXON5052 manufactured by Chisso Petrochemical Co., Ltd. is used as a base material, and yellow dye D80 manufactured by BDH, magenta dye G-176 manufactured by Nippon Kogaku Dyeing Co., Ltd., cyan dye SI- manufactured by Mitsui Chemicals, Inc.
497 was dissolved to prepare black. The black GH liquid crystal is injected into the display area (106) and the filler area (109) in the cell, and the injection holes (106a, 109a) are formed.
Was sealed to obtain a GH type liquid crystal cell.

Example 2 A liquid crystal cell having a gap of 10 μm between substrates was manufactured with a cell structure as shown in FIG. The same material as in Example 1 was used for the inner / outer seal portion and the liquid crystal material, and the filler region (209) had a particle size of about 50 n.
A medium in which silica gel fine particles controlled to m were dispersed in silicone oil was injected as a filler (110) to obtain a GH type liquid crystal cell.

Example 3 The sealant of Example 1 was changed to 3
Example 1 was repeated except that a mixture of 20% by weight of fluorinated ethylene and BPO as a thermal polymerization initiator was used.
A GH-type liquid crystal cell was manufactured using the same structure and material as described above. The sealant used in the third embodiment has a higher moisture-proof property than the sealant of the first embodiment.

Comparative Example 1 As Comparative Example 1, a liquid crystal cell having a conventional structure was manufactured. As shown in FIG. 7, a display area 13 partitioned by a single seal portion 12 is formed on a substrate 11,
Here, black GH liquid crystal having exactly the same components as in Example 1 was injected, and the injection hole 14 was sealed to obtain a GH type liquid crystal cell.

Each of the liquid crystal cells of Examples 1 to 3 and Comparative Example 1 was prepared in two pieces (eight in total).
B was divided into two groups, and the voltage holding ratio (%) was measured before the test. At this time, the measured temperature of group A is 24 ° C.
(Room temperature), and the measurement temperature of Group B was 70 ° C.
The holding time of the voltage holding ratio is 16.7 ms (frame frequency 60 Hz) corresponding to one frame on the screen.
The applied voltage was 5 V in a rectangular wave. The liquid crystal cells of these two groups were allowed to stand for 500 hours in an environment of a humidity (weather and humidity resistance) of 80% and a temperature of 70 ° C., and the voltage holding ratio (%) was measured again at a holding time of 16.7 ms. At this time, the measured temperature of Group A was 24 ° C. (room temperature), and the measured temperature of Group B was 70 ° C. Table 1 shows the results.

[0056]

Table 1 Group A (24 ° C) Group B (70 ° C) Before test After test Before test After test Example 1 99.5 99.3 99.0 98.5 Example 2 99.5 99.0 99.0 0 97.5 Example 3 99.5 99.5 99.0 99.0 Comparative Example 1 99.5 93.0 99.0 17.5 Looking at the test results in Table 1 above, Examples 1 to 9 3
In the liquid crystal cell of the above, a high voltage holding ratio of 97% or more was obtained in both groups A and B. In particular, in Example 3, a higher voltage holding ratio than that of Example 1 could be obtained due to the high moisture resistance of the trifluorinated ethylene chloride resin. On the other hand, in Comparative Example 1, it was confirmed that the voltage holding ratio of both groups A and B was significantly reduced. In particular, in the liquid crystal cell of Group B, the voltage holding ratio was significantly reduced, and it was revealed that the reliability was extremely low in a high temperature and high humidity environment.

A liquid crystal cell exactly the same as that of Comparative Example 1 was prepared, a UV cut filter was attached to the surface of the liquid crystal cell, and after irradiating light of 340 mJ / M ² with a xenon lamp, the voltage holding ratio was measured. Has been confirmed to have decreased by only a few percent. From these results, the main cause of the decrease in the voltage holding ratio is the entry of moisture into the liquid crystal layer in the display region, and the single seal portion of the conventional structure as in Comparative Example 1 does not allow sufficient entry of water molecules. It became clear that it could not be shut off.

Next, test results when the liquid crystal cells shown in Embodiments 3 and 4 and the liquid crystal cell of Comparative Example 2 (conventional example) are left under the same environment will be described.

[Example 4] LIXON5052XX manufactured by Chisso Petrochemical Co., Ltd. was used as a liquid crystal material, and SI-497 (Cyan, 1.6 manufactured by Mitsui Chemicals, Inc.) was used as a dichroic dye.
wt%), D80 manufactured by BDH (yellow, 2.2 wt%)
%), G-176 (Magenta 1.7
wt%). 0.8 wt% of S811 manufactured by Merck was dissolved as a chiral agent. This GH liquid crystal was injected into a liquid crystal cell adjusted to have a gap between substrates of 10 μm, thereby producing a GH type liquid crystal cell. Further, the entire outside of the GH type liquid crystal cell was covered in a bag shape with a trifluorinated ethylene resin having an adhesive layer on one side to obtain a GH type liquid crystal cell having a cell structure as shown in FIG. . The adhesive layer,
This is for improving the adhesion of the protective film, and by performing heat treatment when coating the protective film, the protective film could be closely adhered between the substrates without any gap.

Example 5 The GH type liquid crystal of Example 4 was injected into a liquid crystal cell in which the gap between the substrates was adjusted to 10 μm.
A GH type liquid crystal cell was manufactured. Furthermore, four sides around the GH type liquid crystal cell were covered in a frame shape with a trifluorinated ethylene resin having an adhesive layer on one side to obtain a GH type liquid crystal cell as shown in FIG.

Comparative Example 2 In Comparative Example 2, the G
The H-type liquid crystal was injected into a liquid crystal cell in which the gap between the substrates was adjusted to 10 μm to obtain a GH type liquid crystal cell. In the liquid crystal cell of Comparative Example 2, the protective film was not covered.

The voltage holding ratio (%) of each of the liquid crystal cells of Examples 4 and 5 and Comparative Example 2 was measured before the test. The measurement temperature at this time was 24 ° C. (room temperature). The holding time of the voltage holding ratio was 500 ms, and the applied voltage was 5 V in a rectangular wave. Then, after leaving these liquid crystal cells in an environment of a humidity (weather and humidity resistance) of 80% and a temperature of 70 ° C. for 800 hours, a measurement temperature of 24 ° C. (room temperature) and a holding time of 500 ms
And the voltage holding ratio (%) was measured. Table 2 shows the results.

[0063]

[Table 2] Looking at the test results in Table 2, the liquid crystal cells of Examples 4 and 5 had a retention time of 500 times longer than that of the previous example.
Despite the strict condition of ms, a voltage holding ratio equal to that before the test was obtained. When a lighting inspection of the liquid crystal cell was performed after the test, no burn-in or a decrease in contrast was observed. On the other hand, Comparative Example 2
In this case, it was confirmed that the voltage holding ratio was remarkably reduced to 40%. When a lighting test was performed after the test, burn-in was observed in 40% of a plurality of liquid crystal cells of Comparative Example 2 manufactured at the same time. According to this test result, the reliability of the liquid crystal cell of Comparative Example 2 was extremely low under a high-temperature and high-humidity environment, and the single seal portion of the conventional structure cannot sufficiently block water molecules from entering. It became clear.

[0064]

As described above, in the liquid crystal cell according to the present invention, even if the cell is exposed to a humid environment for a long time, water molecules, which behave as gas, can effectively enter the liquid crystal layer. Since the cutoff can be performed, a decrease in the resistance value of the liquid crystal layer does not occur, and deterioration in display quality due to a decrease in the voltage holding ratio can be prevented. In addition, since the conventional large and heavy waterproof frame is not required, the ratio of the display area to the area of the outer frame can be increased, and the display can be more easily viewed in addition to the reduction in size and weight. It becomes possible.

Therefore, not only the size and weight of the liquid crystal display device can be reduced and the appearance of the display can be improved, but also the excellent display quality can be maintained even in a harsh environment such as marine leisure. A liquid crystal cell can be provided. In addition, since a TFT-driven liquid crystal display device using a GH type liquid crystal cell, which has been difficult in the past, can be put to practical use, a portable information device with clear color display and excellent reliability can be realized. Can be.

[Brief description of the drawings]

FIG. 1A is a schematic plan view of a liquid crystal cell according to a first embodiment, and FIG. 1B is a schematic cross-sectional view taken along line aa ′ of FIG.

FIG. 2 is a schematic plan view of a liquid crystal cell according to a second embodiment.

FIG. 3 is an external view of a conventional marine GPS display.

FIG. 4 is an external view of a marine GPS display to which the liquid crystal cell of the present invention is applied.

5A is a schematic plan view of a liquid crystal cell according to a third embodiment, and FIG. 5B is a schematic cross-sectional view taken along line bb ′ of FIG.

6A is a schematic plan view of a liquid crystal cell according to a fourth embodiment, and FIG. 6B is a schematic cross-sectional view taken along the line cc ′ of FIG. 6A.

FIG. 7 is a schematic plan view of a liquid crystal cell according to Comparative Example 1.

[Explanation of symbols]

 100, 200, 300, 400 Liquid crystal cells 101, 301, 401 Array substrate 102, 302, 402 Opposite substrates 103, 203, 303, 403 Liquid crystal layer 104 Alignment film 105, 205 Internal seal portions 106, 206 , 304, 404: display areas 107, 207: outer seal parts 108, 208: filler areas 109, 110, 209, 210: injection holes 111, 211: fillers 310, 410: protective film

Continued on the front page (72) Inventor Seizaburo Shimizu 1 Komukai Toshiba-cho, Saiwai-ku, Kawasaki-shi, Kanagawa F-term in the Toshiba R & D Center (reference) 2H089 HA40 KA15 LA41 LA42 MA04Y NA24 NA41 NA45 NA48 QA07 QA11 QA12 QA14 RA06 SA01 TA06 UA09

Claims (7)

[Claims] 1. A liquid crystal cell comprising a liquid crystal composition sandwiched between substrates opposed to each other at a predetermined interval, comprising: a first region partitioned by a first seal portion between the substrates; A second region partitioned by a second seal portion is formed outside the region, a liquid crystal composition is sealed in the first region, and a filler is sealed in the second region. A liquid crystal cell, characterized in that: 2. The liquid crystal cell according to claim 1, wherein the liquid crystal composition is sealed as the filler. 3. The liquid crystal cell according to claim 1, wherein the filler is a medium having a function of capturing water molecules. 4. The liquid crystal cell according to claim 1, wherein the liquid crystal composition is a guest-host type liquid crystal. 5. The liquid crystal cell according to claim 1, wherein the material of the first and second seal portions is a resin material containing at least a halogenated ethylene resin. 6. A liquid crystal cell comprising a liquid crystal composition sandwiched between substrates opposed to each other at a predetermined interval, wherein the entire outside of the liquid crystal cell is covered in a bag shape with a halogenated ethylene resin. cell. 7. The liquid crystal cell according to claim 6, wherein four sides of the liquid crystal cell are covered with a halogenated ethylene resin in a frame shape.