JPH0545633A - Liquid crystal display element - Google Patents

Abstract

PURPOSE:To eliminate deterioration in liquid crystal display function even when the liquid crystal display element is bent or applied with external impact, to facilitate the assembly and to reduce the cost. CONSTITUTION:A seal agent 22 is printed at the periphery of substrates 20 and 21 to constitute a liquid crystal cell, and an injection hole 23 for injecting liquid crystal 25 into the cell is formed on the side of one substrate 20. A polarizing plate 28 is extended to the position of the injection hole part 30 and stuck on the substrate 21 on the opposite side from the substrate 20 where the injection hole 23 is formed to prevent the substrates 20 and 21 from deforming or breaking owing to the external force.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device,
In particular, it relates to a liquid crystal display device using a polymer film as a substrate.

[0002]

2. Description of the Related Art Conventionally, a liquid crystal display device (PF-LCD) using a polymer film as a substrate is characterized in that it is light and thin, has impact resistance and can be freely formed, as compared with a liquid crystal display device using a glass substrate. Therefore, it has been actively researched in recent years, and has been put into practical use as liquid crystal for some card calculators, protective glasses for welding, and liquid crystal for goggles.

In a conventional liquid crystal display device using a polymer film as a substrate, an injection port for injecting liquid crystal is roughly divided into two.
There are two types. For example, as shown in the plan view of the liquid crystal cell 1 of FIG. 12A, an injection port 2 for injecting liquid crystal into the cell is formed in the left end portion of the liquid crystal cell 1 by cutting out a part of the substrate 3. Substrate 3 around the liquid crystal cell 1 excluding this portion
A sealant 5 is disposed between the first and the second seals. Figure 12 (a)
A sectional view taken along the line A-A of FIG. 6B shows that a cell for injecting liquid crystal is formed.

FIGS. 13 (a) and 13 (b) are enlarged views of the injection port of this liquid crystal cell. After the liquid crystal is filled from the injection port 2, the injection port 2 is sealed with a sealant 6. The sealant 6 is shown in FIG.
As shown in (b), since it spreads around the injection port 2 and projects and solidifies, the polarizing plate 7 is formed by adhering to the substrate 3 with a room for the injection port portion 8. Also, FIG. 14 (a)
(B) is a diagram showing a liquid crystal cell 1 in which an injection port is punched out on one substrate. FIG. 3A is a plan view, and FIG.
FIG. 7A is a sectional view taken along line CC of FIG. As shown in FIG. 14 (b), after filling the liquid crystal cell 1 with the liquid crystal from the injection port 2, the injection port is sealed with a sealant in the same manner as described above, and a polarizing plate is attached thereon. wear.

This is shown in FIG. 15 which is a partial sectional view of the injection port.
As shown in (a), when the injection port 2 is sealed with the sealant 6, the sealant 6 projects from the surface of the substrate 3. For this reason, conventionally, as shown in FIG. 15B, it was necessary to scrape the protruding portion of the encapsulant 6 to the same height as the surface of the substrate 3 and then attach the polarizing plate 7, resulting in poor work efficiency. .. Therefore, in order to save the trouble of scraping off the protruding portion of the sealant 6, the injection port 2 is formed near the periphery of the liquid crystal cell 1 as shown in FIG. 16 (a), and the injection port portion 8 is formed as shown in FIG. 16 (b). The polarizing plate 7 has been attached only to the portion of the display area 9 that is not included.

FIG. 17 is a sectional view taken along line DD of FIG. 16 (b). As shown in FIG. 17, in the liquid crystal display element 10, the liquid crystal 12 is filled into the liquid crystal cell through the injection port 2 formed in the substrate 3 on one side, and then the liquid crystal cell is sealed with the sealant 6. An injection port portion 8 is formed to expose the substrates 3 and 4 which are not covered with an optical functional element such as a compensation plate.

[0007]

As described above, in the liquid crystal display device using the conventional polymer film as the substrate, as shown in FIG. 15 (a), the injection port 2 is sealed with the sealant 6. Since the sealant 6 projects onto the substrate 3, the sealant 6
If you stick with a part of the polarizing plate on it without scraping it, a gap will be formed between the polarizing plate and the substrate, moisture and air will enter, and the polarization degree of the polarizing plate will be reduced, It may come off easily.

Further, when the sticking agent 6 is attached in a state where the protruding sealing agent 6 exists under the polarizing plate 7, a slight deformation of the polarizing plate 7 is transmitted to the display area, and the substrate formed of the polymer film follows it. Deform. As a result, the cell gap is changed, and there is a problem that a defective appearance is generated as a color change. Therefore, the conventional liquid crystal display device is shown in FIG.
As shown in (b), the polarizing plate 7 is affixed to the display area 9 excluding the injection port portion 8 while avoiding the sealant at the injection port, and as shown in FIG. Since the size is vertically symmetrical, the number of parts is reduced in the process, and the number of man-hours for changing the jigs and tools of the polarizing plate sticking device can be reduced,
The same thing is used for the upper and lower polarizing plates.

However, in the case of the liquid crystal display device constructed as shown in FIG. 17, since the substrates 3 and 4 are exposed at the injection port portion 8, when external force such as bending or impact is applied to this portion, the liquid crystal display device shown in FIG. As shown in FIG. 3, cracks 13 are generated in the substrate of the injection port portion 8 and bubbles are generated in the liquid crystal 12, which causes deterioration of image quality and poor appearance. The present invention has been made in view of the above conventional problems, by reinforcing the mechanical strength in the exposed portion of the substrate formed using a polymer film, an external force such as bending or impact is applied to the liquid crystal display element. Even if the liquid crystal display function is not deteriorated, it is an object to provide a liquid crystal display element which can be easily assembled and can be manufactured at low cost.

[0010]

The invention according to claim 1 is
A liquid crystal display element having an optical function element disposed in a display area of a liquid crystal cell using a polymer film as an upper and lower substrate and having a liquid crystal display function, has an injection port for injecting liquid crystal into the liquid crystal cell, A reinforcing member for protecting the substrate is provided at an injection port portion where the substrate around the injection port is exposed, and the invention according to claim 2 is characterized in that the reinforcing member is a sealant for sealing the injection port. A notch is provided at a coating position, and the invention according to claim 3 is a liquid crystal display element in which the injection port is formed through one side of a substrate,
5. The invention according to claim 4, wherein the reinforcing member is formed by adhering the optical function element on the entire surface of the substrate opposite to the substrate on which the injection port is formed except the electrode lead-out portion. A liquid crystal display device having an injection port formed through one side of the substrate, wherein the reinforcing member is attached to the entire surface of the substrate on the injection port side except the coating position of the sealant of the injection port. According to a fifth aspect of the present invention, the optical functional element and the reinforcing member are separately attached to the substrate, and the substrate is reinforced from the inside between the upper and lower substrates along the boundary thereof. The invention according to claim 6 is characterized in that an internal reinforcing member is provided, and an optical functional element having a slit formed along the internal reinforcing member is attached to the entire surface of the substrate provided with the injection port. The invention according to claim 7, characterized in that , The reinforcing member is characterized in that also serves as a socket sealing over the sealing agent of the inlet.

[0011]

Therefore, according to the first aspect of the invention, since the reinforcing member is provided at the injection port portion where the substrate of the liquid crystal cell is exposed, even if an external force such as bending or impact is applied to the liquid crystal cell,
Deformation and damage are less likely to occur, and good image quality and appearance are maintained. According to the invention of claim 2, since the reinforcing member is formed so as to avoid the sealant at the injection port, the reinforcing member is prevented from being deformed, and the deterioration of the characteristics of the liquid crystal cell and the adverse effect on the sealing member are eliminated. Excellent image quality and appearance are maintained.

According to the third aspect of the present invention, the optical functional element attached to the surface of the substrate opposite to the substrate on which the injection port is formed is extended to the injection port portion and attached to the entire surface of the substrate. The substrate can be easily reinforced regardless of the position of the sealant. According to the invention as set forth in claim 4, the optical functional element on the side of the substrate on which the injection port is formed is pasted on the entire surface except for the application position of the sealant, so that the labor of removing the sealant is saved. In addition to strengthening the liquid crystal cell, the liquid crystal cell can be further strengthened by combining with the third aspect.

According to the invention described in claim 5, even when the optical functional element and the reinforcing member are constituted by different members and there is a gap between them, the internal reinforcing member bends or bends the substrate in the gap. To prevent cracks and the like from occurring. According to the sixth aspect of the invention, since the optical functional element having the slits is attached at least on the substrate on the injection port side, the polarizing plate is applied to the protruding portion such as the sealant of the injection port portion. Even if the slits bend and absorb stress, the optical functional elements in the display area will not be adversely affected, and even if polarizing plates are attached to both sides of the substrate, the polarizing plates of the same outer shape will suffice, changing the number of parts and jigs and tools. The number of man-hours decreases.

According to the invention as set forth in claim 7, since the reinforcing member covers the sealant of the injection port and also serves as the socket sealing, the injection port sealing effect is improved together with the reinforcement of the injection port portion. ..

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. First, the configuration will be described. According to the invention of claim 1, a reinforcing member is provided in an injection port portion where a substrate in which an optical functional element is not disposed is exposed in a liquid crystal cell using a polymer film as upper and lower substrates, and a mechanical strength against an external force applied to the substrate. It is characterized by reinforcing the.

1A and 1B are views showing an embodiment of the liquid crystal display element according to the invention as defined in claim 2, wherein FIG. 1A is a perspective view and FIG. 1B is a line EE of FIG. FIG. FIG. 1 is an improvement of the conventional example in which the injection port shown in FIG. 13 is formed at the end. As shown in FIG. 1B, polymer films are used for the substrates 20 and 21 that are arranged in parallel to form a liquid crystal cell. A sealant 22 for a liquid crystal package is screen-printed around the substrate 21 on one side. At this time,
The substrate 20 has an inlet 23 for filling the liquid crystal in the liquid crystal cell.
Since it is provided at the end of 21, the sealant 22 is not printed on the part where the injection port 23 is formed, as shown in FIG. Then, a gap agent 24 that keeps a constant gap is sprayed between the substrates 20 and 21, and then the substrates 20 and 21 are bonded to each other via a sealant 22 and cured. Then, the liquid crystal 25 is injected from the injection port 23, and the injection port 23 is sealed with the sealant 26. In this embodiment, a polarizing plate (LL2-82-12 t = manufactured by Sanritsu Electric Co., Ltd.) is used as an optical functional element in the liquid crystal element thus formed.
120 μm) 27, 28 are used, and the polarizing plates 27, 28 are adhered on substantially the entire surface along the upper and lower substrates 20, 21. As shown in FIG. 1A, the polarization plates 27 and 28 are provided with notches 29 in the polarization plates 27 and 28, respectively, while avoiding the sealant that seals the injection port 23.

By the way, as shown in FIG. 1B, after the liquid crystal 25 is filled into the liquid crystal cell through the injection port 23, the injection port is filled with the sealant 26.
It can be seen that when the block 23 is closed, the sealant 26 spreads from the ends of the substrates 20 and 21 to the outer surface and is solidified. Therefore, the substrate 20,
When the polarizing plates 27 and 28 are attached to the entire outer surface of 21, the sealant
A polarizing plate rides on a part of 26, a gap is formed between the polarizing plate and the substrate, and moisture or air penetrates to cause a decrease in polarization degree or peeling of the polarizing plate.

However, in this embodiment, the polarizing plates 27 and 28 also serve as reinforcing members, and the polarizing plates 27 and 28 are cut so that they can be attached to the substrates 20 and 21 without sandwiching the sealant 26. Lack
29 are formed. Since the substrate other than the notch 29 is covered with the polarizing plate, the substrate is less likely to be deformed or cracked even when an external force is applied, and good image quality and appearance can be maintained.

FIG. 2A is a perspective view showing another embodiment according to claim 2, and FIG. 2B is a perspective view of FIG.
It is a -F line sectional view. In the case of FIG. 2A, a cutout is also formed in the substrate 20, and when the injection port 23 is sealed with a sealant, the spread and protrusion during application of the sealant are taken into consideration. , A notch 29 that is slightly larger than the notch of the substrate 20 is made, the polarizing plate 27 is attached to the substrate 20 before the liquid crystal is injected from the injection port 23, and the sealing agent 26 is poured after the liquid crystal is injected. The inlet 23 is sealed. In this way, the polarizing plate 27 having the notches 29 shown in FIG. 2B is first attached to the substrate 20,
After that, the injection port 23 is sealed with the sealant 26, and the sealant is held by the notches 29 so as not to project from the liquid crystal cell. Also in the case of this embodiment, since the polarizing plate 27 that also serves as a reinforcing member is attached to the substantially entire surface of the substrate 20, a liquid crystal display element that is strong against external force can be created, and the yield can be improved.

3A and 3B are views showing an embodiment of the liquid crystal display element according to the invention described in claim 3, wherein FIG. 3A is a perspective view and FIG. 3B is a line GG of FIG. FIG. In the liquid crystal display element shown in FIG. 3, a polymer film is used as the substrate, and the sealant 22 for the original liquid crystal package is screen-printed around the substrate 21 on one side. Furthermore, a hole of 1 mmφ for injecting liquid crystal is made in one of the substrates 20 and a gap agent 24
And then both substrates 20 and 21 are bonded and cured. After that, the liquid crystal 25 is injected, and the injection port 23 is closed with the sealant 26.
A polarizing plate similar to that of the above-mentioned embodiment is attached to the liquid crystal cell thus formed as an optical functional element. In this case, it seems that it is easy to use the polarizing plate as the reinforcing member, but if the polarizing plate 27 is attached to the entire surface of the injection port 30 containing the sealant 26 without removing the sealant 26, it is described above. As described above, moisture and air enter between the substrate 20 and the polarizing plate 27 and deteriorate the characteristics of the polarizing plate 27. Further, since the sealant 26 is under the polarizing plate, a delicate force is exerted on the display area 31. When added to the polarizing plate 27, the cell gap is changed to cause color unevenness.

Therefore, in this embodiment, the polarizing plate 28 is adhered to the entire surface including the injection port portion 30 of the substrate 21 on the opposite side where the injection port 23 is not formed, so that the sealing agent 26 is projected. It is possible to reinforce the substrate of the liquid crystal cell without being affected. 4A to 4C are views showing an embodiment of the liquid crystal display element according to the invention described in claim 4, (a)
Is a perspective view and (b) is a sectional view taken along line HH of (a). The characteristic structure of this embodiment is that the portion of the injection port portion 30 (see FIG. 3B) on the side of the substrate 20 where the injection port 23 is formed is also the portion of the injection port 23 to which the sealant 26 is applied. The removed polarizing plate 27 is laminated on the entire surface of the substrate 20. Therefore, it is not necessary to prepare a new reinforcing member simply by processing the polarizing plate 27 into an arbitrary shape, and the injection port portion can be reinforced by a slight increase in the number of steps. In addition, as shown in FIG. 3 above, the polarizing plate of the substrate 21 on the opposite side.
When used in combination with 28, the reinforcing effect can be further improved.

Other than this embodiment, when a polarizing plate is not used as the reinforcing member, another reinforcing plate from which the position where the sealing agent 26 is applied is removed after the sealing agent 26 of the injection port 23 is cured is used as a substrate. It may be formed by attaching to 20. Further, as shown in FIG. 5, a polarizing plate 27 having a hole slightly larger than the injection port 23 formed in the substrate 20 is attached to the substrate 20 before the liquid crystal is injected. Then, by inserting a sealant into the injection port 23 from above and curing it, the sealant does not protrude from the liquid crystal cell and the sealant 26 does not adversely affect the attachment of the substrate 20 and the polarizing plate 27. You can also

6A and 6B are views showing an embodiment of the liquid crystal display element according to the invention described in claim 5, wherein FIG. 6A is a perspective view and FIG. 6B is a line I-I of FIG. FIG. The characteristic configuration of this embodiment is that the sealing agent 22 is printed around the substrates 20 and 21 except for the injection port portion as described above, but the polarizing plate 27 and the injection port portion attached to the display area are used. 30
When there is a gap (W) between the reinforcing plate 32 and the reinforcing plate 32, the liquid crystal injection path is left between the substrates 20 and 21 along the boundary between the polarizing plate 27 and the reinforcing plate 32. The sealant, which is the internal reinforcing member 33, is printed at the same time so as not to cover the display area side. The polarizing plate 27 has an internal reinforcing member 33 at its edge.
Pasting up to near or above the injection port 30 at t = 0.2
It is reinforced by a mm reinforcing plate 32. The reinforcing plate 32 may be any film tape, plastic plate, metal plate, or the like. Of course, a polarizing plate may be used. The liquid crystal display element in this case is particularly suitable for a liquid crystal display element in which a liquid crystal injection port is provided at an end, but the injection port is provided in one substrate and the injection port is sealed with a sealant. The type a) can also be implemented by removing the protrusions of the sealant with a cloth or the like before curing. Although not shown, if a soft tape is used as the reinforcing plate, it is not necessary to remove the protruding portion of the sealant. In this way, since the polarizing plate 27 attached to the display area side has no sealant and is attached to the substrate 20 side of the liquid crystal cell having good surface properties, the polarizing plate 27 and the substrate
It is possible to obtain a highly reliable liquid crystal display element because moisture and air do not enter between 20. Further, if the distance between the reinforcing plate 27 and the polarizing plate 32 is too large, cracks may occur during the interval (W), but even in that case, the internal reinforcing member between the substrates 20 and 21 as in the present embodiment. 33
However, if it is placed between the reinforcing plate 32 and the polarizing plate 27, the strength of the substrate is maintained. Therefore, even if an external force is applied, the substrate is unlikely to be deformed or cracked, and a highly reliable liquid crystal display element can be obtained.

FIG. 7 is a perspective view showing an embodiment of the liquid crystal display element according to the invention of claim 6. As shown in FIG. 7, the polarizing plate 27 on the injection port 30 side is not separated, and
A slit 34 is formed in the vicinity of the injection port 23 on the 33. By doing so, the slit 34 is formed even if the sealing agent (not shown) that seals the injection port 23 is under the polarizing plate 27 and the polarizing plate on the injection port 30 side is tilted by the projection of the sealing agent. The deflected polarizing plate 27 portion bends and absorbs this, so that the display area is not deformed and the cell gap in the display area is not disturbed, so that a highly reliable liquid crystal display element can be obtained.

Further, it is possible to use a polarizing plate having the same shape as the polarizing plate attached to the substrate on the opposite surface side, the number of parts is reduced, and the number of man-hours for changing the jig and tool of the polarizing plate laminating apparatus is reduced. The cost can be reduced.
FIG. 8 is a perspective view showing an embodiment of a liquid crystal display device in which an injection port is provided at the end of a liquid crystal cell, and FIGS.
FIG. 11 is a sectional view taken along the line J, and FIG. 11 is a view showing the shape of the reinforcing member in FIG. 10.

The liquid crystal display element shown in FIG.
Are provided at the ends of the liquid crystal cell. For this reason, when the injection port 23 is sealed with the sealant, the sealant spreads and remains at both end portions of the upper and lower substrates. However, as shown in FIG. 8, since the reinforcing plate 32 different from the display area 31 is attached separately, even if the reinforcing plate 32 is inclined due to the remaining sealing agent, the polarizing plate 27 on the display area 31 side does not. It has no effect.

Also, as shown in FIG. 9, both substrates
Since the reinforcing plate 32 different from the display area is attached to 20 and 21, and the internal reinforcing member 33 is arranged at the boundary position, the reinforcing effect is great. In addition, the injection port 23 has a structure in which a conventional socket sealing (sealing using a sealing member) is used to protect the injection port 23 by covering the injection port with a reinforcing member. This socket sealing is provided after the liquid crystal is injected, and when the sealing agent is cured, it is provided so as to block the injection port of the reinforcing agent and is cured. This improves the reliability of the injection port 23.
As shown in 10, so that the reinforcing plate 32 also serves as this,
The cross-sectional shape is U-shaped as shown in Fig. 11 to protect it even when external force is applied to the injection port,
The sealing effect of 23 can be further enhanced.

In this embodiment, the case where the optical functional element is a polarizing plate has been described, but the optical functional element such as a phase compensating plate, a temperature compensating plate, an antireflection plate or the like is attached to the polymer film, The substrate can also be reinforced.

[0029]

As described above, according to the first aspect of the invention, a reinforcing member such as an optical functional element is provided at the injection port where the substrate of a liquid crystal display element using a polymer film, which is weak against external force, is exposed. Is provided to reinforce the portion, the influence of external force is reduced, and good image quality and appearance are maintained, so that high reliability can be obtained.

According to the second aspect of the invention, since the reinforcing member is provided avoiding the sealant, even if a relatively hard reinforcing member is attached after curing the sealant, the sealant is not adversely affected. When not applied or when the polarizing plate also serves as a reinforcing member, moisture, air, etc. do not enter between the polarizing plate and the substrate, so that the characteristics of the polarizing plate are not deteriorated. Further, the subtle deformation of the polarizing plate is not transmitted to the display area side, and there is an effect that a defective appearance or the like does not occur.

According to the third aspect of the present invention, in a liquid crystal display device having a hole on one side of the injection port, a polarizing plate on the side opposite to the injection port is pasted up to the injection port portion. The strength of the substrate can be easily increased only by changing the shape of the optical functional element of the component. According to the present invention as set forth in claim 4, since the polarizing plate on the side of the substrate on which the injection port is formed is attached to the entire surface in a shape excluding the application position of the sealant, the sealant is projected. The liquid crystal display element is not affected by the above, is strong against external force, and has a highly reliable liquid crystal display element by a good optical function element.

According to the fifth aspect of the present invention, the optical functional element and the reinforcing member are separately configured, and even if there is a gap between them, the internal reinforcing member in the liquid crystal cell is arranged in the gap. In addition, the liquid crystal display element having high reliability can be obtained by preventing the occurrence of cracks in the gap. According to the sixth aspect of the present invention, since the optical function element has a slit, the injection port section becomes flexible, and the projection of the sealant in the injection section deforms the optical function element up to the display area. In addition to preventing the above, the optical function element on the opposite side having the same outer shape can be used, so that the number of man-hours for changing the jigs and tools of the polarizing plate laminating apparatus can be reduced and the cost can be reduced.

According to the seventh aspect of the present invention, since the reinforcing member covers the injection port, it can also serve as a conventional socket sealing and protects the injection port from external force. It is possible to increase the effect of sealing the inlet.

[Brief description of drawings]

1A and 1B are diagrams showing an embodiment of a liquid crystal display element according to the invention of claim 2, wherein FIG. 1A is a perspective view and FIG. 1B is a sectional view taken along line EE of FIG. ..

FIG. 2 is a perspective view showing another embodiment according to claim 2, (a) is a perspective view, and (b) is an F- of FIG.
It is a F line sectional view.

3A and 3B are diagrams showing an embodiment of the liquid crystal display element according to the invention of claim 3, wherein FIG. 3A is a perspective view and FIG. 3B is a sectional view taken along line GG of FIG. ..

4A and 4B are views showing an embodiment of the liquid crystal display element according to the invention of claim 4, wherein FIG. 4A is a perspective view and FIG. 4B is a sectional view taken along line HH of FIG. 4A. ..

5 is a perspective view of an injection port portion of FIG. 4 (b).

6A and 6B are views showing an embodiment of the liquid crystal display element according to the invention of claim 5, wherein FIG. 6A is a perspective view and FIG. 6B is a sectional view taken along line I-I of FIG. 6A. ..

FIG. 7 is a perspective view showing an embodiment of the liquid crystal display element according to the invention of claim 6;

FIG. 8 is a perspective view showing an example of a liquid crystal display device having an injection port provided at an end of a liquid crystal cell.

9 is a sectional view taken along line JJ of FIG.

FIG. 10 is a perspective view showing an embodiment of the liquid crystal display element according to the invention of claim 7.

11 is a diagram showing the shape of the reinforcing member of FIG.

12A and 12B are views showing a conventional liquid crystal cell having an injection port at an end, FIG. 12A is a plan view, and FIG. 12B is a cross-sectional view taken along the line AA.

13 is an enlarged view of the injection port of FIG. 12, (a) is a perspective view, (b) is a sectional view taken along line BB of (a).

14A and 14B are diagrams showing a conventional liquid crystal cell in which an injection port is punched and formed on one side substrate, FIG. 14A is a plan view, and FIG. 14B is a sectional view taken along line CC of FIG. 14A.

15 is an enlarged cross-sectional view of the injection port of FIG. 14, (a) is a sealant application state diagram, and (b) is a polarizing plate attachment state diagram.

16A and 16B are perspective views of a conventional liquid crystal display element, in which FIG. 16A is a diagram before attaching the optical functional element, and FIG. 16B is a diagram after attaching the optical functional element.

17 is a cross-sectional view taken along the line DD of FIG. 16 (b).

FIG. 18 is a perspective view of a liquid crystal display element for explaining the problem of the conventional example.

[Explanation of symbols]

 20, 21 Substrate 22 Sealant 23 Injection port 25 Liquid crystal 26 Sealant 27, 28 Polarizer 29 Notch 30 Injection port 31 Display area 32 Reinforcing plate 33 Internal reinforcing member 34 Slit

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Sumio Kamoi 1-3-6 Nakamagome, Ota-ku, Tokyo Stock Company Ricoh (72) Inventor Hiroshi Ikeguchi 1-3-6 Nakamagome, Ota-ku, Tokyo Shares In Ricoh Company (72) Inventor Yumi Matsuki 1-3-6 Nakamagome, Ota-ku, Tokyo Stock Company Ricoh (72) Inventor Sanichi Sakurai 1-3-6 Nakamagome, Ota-ku, Tokyo Ricoh Company Within

Claims (7)

[Claims] 1. A liquid crystal display element having an optical function element disposed in a display area of a liquid crystal cell using a polymer film as upper and lower substrates, and having a liquid crystal display function. An injection port for injecting liquid crystal into the liquid crystal cell. And a reinforcing member for protecting the substrate is provided in the inlet portion where the substrate around the inlet is exposed. 2. The liquid crystal display element according to claim 1, wherein the reinforcing member is provided with a notch at a position where a sealant for sealing the inlet is applied. 3. A liquid crystal display device, wherein the injection port is formed through one side of a substrate, wherein the reinforcing member has an optical function element on an electrode extraction portion on a substrate opposite to the substrate having the injection port. The liquid crystal display device according to claim 1, wherein the liquid crystal display device is formed by pasting on the entire surface except for. 4. A liquid crystal display device, wherein the injection port is formed so as to penetrate through one side of a substrate, wherein the reinforcing member is provided on the substrate at the injection port side, and the optical functional element is provided at a position where the sealing agent is applied to the injection port. The liquid crystal display element according to claim 1 or 3, wherein the liquid crystal display element is formed by pasting on the entire surface except the above. 5. The optical functional element and the reinforcing member are separately attached to a substrate, and an internal reinforcing member for reinforcing the substrate from the inside is provided between the upper and lower substrates along the boundary thereof. The liquid crystal display device according to claim 1. 6. The liquid crystal display element according to claim 5, wherein an optical functional element having a slit formed along the internal reinforcing member is attached to the entire surface of the substrate provided with the injection port. .. 7. The liquid crystal display element according to claim 1, 5 or 6, wherein the reinforcing member covers the sealant of the injection port and doubles as a socket sealing.