TW201414691A - Manufacturing method of sealing structure body and member for liquid crystal display panel - Google Patents

Abstract

The present invention relates to a sealing structure body, which is used in manufacturing a member for a liquid crystal display panel and comprises: a first laminate body which contains a first glass substrate with its board thickness below 0.3 mm and a first support structure body detachably adhered to the above-mentioned first glass substrate; a second laminate body which contains a second glass substrate with its board thickness below 0.3 mm and a second support structure body detachably adhered to the above-mentioned second glass substrate; a sealing part, which is disposed by way of forming a formation area by surrounding the liquid crystal display panel in between the above-mentioned first and second laminate bodies; and an adhesion part which adheres the above-mentioned first and second laminate bodies by the way of arbitrary constitution; and the above-mentioned first and second glass substrates face oppositely to each other and satisfy the following correlations (1) and (2): {(X1×Y1)+(Z1×W1)}/(A1×B1)>1… correlation (1); {(X2×Y2)+(Z2×W2)}/(A2×B2)>1… correlation (2); in the correlation (1), X1 represents the peeling strength (N/mm) in between the above-mentioned sealing part and the first glass substrate, Y1 represents the total contact area (mm<2>) in between the above-mentioned sealing part and the first glass substrate, Z1 represents the peeling strength (N/mm) in between the above-mentioned adhesion part and the first glass substrate, W1 represents the total contact area (mm<2>) in between the above-mentioned adhesion part and the first glass substrate, A1 represents the peeling strength (N/mm) in between the above-mentioned first glass substrate and the first support structure body, and B1 represents the total contact area (mm<2>) in between the above-mentioned first glass substrate and the first support structure body; in the correlation (2), X2 represents the peeling strength (N/mm) in between the above-mentioned sealing part and the second glass substrate, Y2 represents the total contact area (mm<2>) in between the above-mentioned sealing part and the second glass substrate, Z2 represents the peeling strength (N/mm) in between the above-mentioned adhesion part and the second glass substrate, W2 represents the total contact area (mm<2>) in between the above-mentioned adhesion part and the second glass substrate, A2 represents the peeling strength (N/mm) in between the above-mentioned second glass substrate and the second support structure body, and B2 represents the total contact area (mm<2>) in between the above-mentioned second glass substrate and the second support structure body; moreover, in the absence of the above-mentioned adhesion part, (Z1xW1)=0 and (Z2xW2)=0.

Description

Sealing structure and method for manufacturing member for liquid crystal display panel

The present invention relates to a sealing structure, and more particularly to a sealing structure used in the manufacture of a member for a liquid crystal display panel. Moreover, the present invention also relates to a method of manufacturing a member for a liquid crystal display panel using the sealing structure.

In recent years, thinner and lighter electronic devices such as liquid crystal display panels have been developed, and the thinning of glass substrates used in these electronic devices has been continuously promoted. However, the thinning of the glass substrate causes the strength of the glass substrate to be lowered, so that the operability of the glass substrate in the manufacturing steps of the electronic device is lowered.

Therefore, a method has been previously employed in which a glass substrate is thinned by a chemical etching treatment after forming various elements and the like using a glass substrate thicker than the final thickness. However, according to such a method, for example, when the thickness of the glass substrate is reduced from 0.7 mm to 0.2 mm or 0.1 mm, it is necessary to remove most of the material of the original glass substrate by using an etching solution, in terms of productivity or use efficiency of raw materials. This is not necessarily preferable.

In the case where the glass substrate is thinned by chemical etching, when there is a fine scratch on the surface of the glass substrate, there is a case where a fine pit (corrosion pit) starting from a scratch is formed by the etching process. Thereby becoming an optical defect.

In order to cope with the above problems, there has been proposed a method in which a thin glass substrate having a final thickness is used, and a glass substrate is laminated on a support structure also called a reinforcing plate to form a laminate, and the laminate is formed. After forming various elements and the like on the glass substrate, the support structure is peeled off from the glass substrate (see, for example, Patent Document 1). Support structure The body comprises a support plate and an adhesive layer fixed on the support plate, and the glass substrate is detachably adhered by the adhesive layer. Finally, the support structure is peeled off from the glass substrate, and a new glass substrate is laminated on the peeled support structure and reused.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. Hei 8-86993

The manufacturing of the member for liquid crystal display panels using the above laminated body is performed, for example, as follows. First, a pair of laminated bodies are prepared, and a thin film transistor (TFT), a color filter (CF), or the like is formed as needed in one or two or more formation regions of the liquid crystal display panel of each of the glass substrates. Further, a sealing material is applied to a glass substrate so as to surround each of the formation regions of the liquid crystal display panel. Then, the sealing material is deposited by laminating the sealing material laminate 1 and the sealing material is cured to form a sealing portion. Then, the support structure is peeled off from each of the glass substrates of the self-sealing structure, and a member for liquid crystal display panels having one or two or more regions serving as liquid crystal display panels is produced.

However, in the case of the above-described method, when the support structure is peeled off from the self-sealing structure, the liquid crystal display panel member and the support structure are not necessarily peeled off, and the inside of the liquid crystal display panel member is specifically In other words, the glass substrate and the sealing portion are peeled off, and damage such as cracking may occur in the glass substrate. When the sealing member is peeled off or the glass substrate is damaged by the member for a liquid crystal display panel, the member for liquid crystal display panels cannot be used for manufacture of a liquid crystal display panel.

In order to solve the problem, the present invention has been made to provide a sealing structure for use in manufacturing a member for a liquid crystal display panel, which is capable of suppressing peeling of a sealing portion or damage of a glass substrate when the support structure is peeled off.

The present inventors have studied the problems of the prior art and found that the above problems can be solved by the following constitution, and the present invention has been completed.

In other words, in order to achieve the above object, a first aspect of the present invention is a sealing structure for manufacturing a member for a liquid crystal display panel, comprising: a first layered body having a thickness of 0.3 mm or less a glass substrate and a first support structure that is detachably bonded to the first glass substrate, and a second laminate having a second glass substrate having a thickness of 0.3 mm or less and being detachably attached to the second glass substrate a second supporting structure; the sealing portion is provided between the first laminated body and the second laminated body so as to surround the formation region of the liquid crystal display panel; and the connecting portion is followed by the first laminated layer in an arbitrary configuration And the second layered body; and the first glass substrate and the second glass substrate are opposed to each other, and satisfy the following relational expressions (1) and (2).

Formula (1) {(X1 × Y1) + (Z1 × W1)} / (A1 × B1) > 1

Equation (2) {(X2 × Y2) + (Z2 × W2)} / (A2 × B2) > 1

(In the formula (1), X1 represents the peeling strength (N/mm) between the sealing portion and the first glass substrate, Y1 represents the total contact area (mm ² ) between the sealing portion and the first glass substrate, and Z1 represents the bonding portion and Peel strength (N/mm) between the first glass substrates, W1 indicates the total contact area (mm ² ) between the second portion and the first glass substrate, and A1 indicates the peel strength between the first glass substrate and the first support structure. (N/mm), B1 represents the total contact area (mm ² ) between the first glass substrate and the first support structure, and in the formula (2), X2 represents the peel strength between the seal portion and the second glass substrate (N/). Mm), Y2 represents the total contact area (mm ² ) between the sealing portion and the second glass substrate, Z2 represents the peel strength (N/mm) between the bonding portion and the second glass substrate, and W2 represents the bonding portion and the second glass substrate. The total contact area (mm ² ), A2 indicates the peel strength (N/mm) between the second glass substrate and the second support structure, and B2 indicates the total contact area between the second glass substrate and the second support structure (mm). ² ); Furthermore, in the case where there is no follower, it is set to (Z1 × W1) = 0 and (Z2 × W2) = 0)

In the first aspect, it is preferable to include a plurality of sealing portions.

In the first aspect, it is preferable to include a follower portion, and the subsequent portion is linearly disposed along the sealing portion.

In the first aspect, it is preferable to include a follower portion, and the subsequent portion is provided to surround the entirety of the plurality of seal portions.

In the first aspect, it is preferable to include a follower portion, and the subsequent portion is provided to surround each of the plurality of seal portions.

In the first aspect, it is preferable that the first glass substrate and the second glass substrate have a size of 730 mm in length × 920 mm in width.

In the first aspect, preferably, the first glass substrate and/or the second glass substrate are made of alkali-free glass.

In the first aspect, it is preferred that the glass plate is composed of an alkali-free glass containing the following components in terms of mass percentage based on oxide.

SiO ₂ : 50~66%

Al ₂ O ₃ : 10.5~24%

B ₂ O ₃ : 0~12%

MgO: 0~8%

CaO: 0~14.5%

SrO: 0~24%

BaO: 0~13.5%

MgO+CaO+SrO+BaO: 9~29.5%

ZnO: 0~5%

In the first aspect, the glass plate is preferably composed of an alkali-free glass containing the following components in terms of a mass percentage based on an oxide.

SiO ₂ : 58~66%

Al ₂ O ₃ : 15~22%

B ₂ O ₃ : 5~12%

MgO: 0~8%

CaO: 0~9%

SrO: 3~12.5%

BaO: 0~2%

MgO+CaO+SrO+BaO: 9~18%

ZnO: 0~2%

According to a second aspect of the invention, there is provided a method for producing a member for a liquid crystal display panel, comprising the step of peeling off the first support structure and the second support structure from the first aspect.

In the second aspect, in the peeling step, the peeling of the first support structure and the second support structure from the sealing structure is preferably performed slowly at one end portion of the self-sealing structure.

According to the present invention, it is possible to provide a sealing structure for use in manufacturing a member for a liquid crystal display panel, which is capable of suppressing peeling of a sealing portion or damage of a glass substrate when the support structure is peeled off.

10, 200, 300, 400‧‧‧ Sealed structures

11‧‧‧1st layered body

12‧‧‧2nd layered body

13‧‧‧ Sealing Department

14‧‧‧Continue

20‧‧‧Components for LCD panels

111‧‧‧1st glass substrate

112‧‧‧1st support structure

113‧‧‧1st support plate

114‧‧‧1st adhesive layer

121‧‧‧2nd glass substrate

122‧‧‧2nd support structure

123‧‧‧2nd support plate

124‧‧‧2nd adhesive layer

L‧‧‧ peeling boundary line

Fig. 1 is a plan view showing a first embodiment of the sealing structure of the present invention.

Fig. 2 is a cross-sectional view taken along line A-A of the sealing structure shown in Fig. 1.

Fig. 3 is an explanatory view for explaining a peeling method of peeling off the first support structure from the seal structure shown in Fig. 1;

Fig. 4 is a plan view showing a second embodiment of the sealing structure of the present invention.

Fig. 5 is a cross-sectional view taken along line A-A of the sealing structure shown in Fig. 4;

Fig. 6 is an explanatory view for explaining a peeling method of peeling off the first support structure from the seal structure shown in Fig. 4;

Fig. 7 is a plan view showing a modification of the sealing structure.

Fig. 8 is a plan view showing another modification of the sealing structure.

Hereinafter, embodiments of the present invention will be described.

In addition, aspects which satisfy the relationship of the following formula (1) and formula (2) are listed as the characteristic points of this invention. Details of the formulas (1) and (2) will be described below.

<First embodiment>

Hereinafter, the first embodiment of the sealing structure will be specifically described with reference to the drawings.

Figs. 1 and 2 are a plan view and a cross-sectional view taken along line A-A showing an example of the first embodiment of the sealing structure.

The sealing structure 10 is used for manufacturing the liquid crystal display panel member 20, and as shown in FIG. 2, has a portion which is a member for the liquid crystal display panel 20. The sealed structure 10 includes the first layered body 11 , the second layered body 12 , and the sealing portion 13 . Furthermore, the sealing structure 10 does not include a follower.

The first layered body 11 and the second layered body 12 are arranged to face each other with a space therebetween. The sealing portion 13 is provided between the first layered body 11 and the second layered body 12, and is provided, for example, in a plurality of frame shapes so as to surround the formation region of the liquid crystal display panel. In the seal structure 10 shown in Fig. 1, six frame-shaped seal portions 13 are provided corresponding to the six formation regions.

The first layered body 11 includes a first glass substrate 111 and a first support structure 112 that is detachably bonded to the first glass substrate 111. The first support structure 112 further includes a first support plate 113 and a first adhesive layer 114 provided on one main surface of the first support plate 113. The first support structure 112 is detachably bonded to the first glass substrate 111 by the first adhesive layer 114 .

The second laminated body 12 includes a second glass substrate 121 and a second support structure 122 that is detachably bonded to the second glass substrate 121 . The second support structure 122 further includes a second support plate 123 and a second adhesive layer 124 provided on one main surface of the second support plate 123. The second support structure 122 is detachably bonded to the second glass substrate 121 by the second adhesive layer 124 .

In addition, the first glass substrate 111, the second glass substrate 121, and the portions other than the first support structure 112 and the second support structure 122 in the sealing structure 10 are disposed on the first glass substrate 111 and the second glass substrate 121. The sealing portion 13 between the two serves as the member 20 for the liquid crystal display panel.

The first layered body 11 and the second layered body 12 are disposed such that the first glass substrate 111 and the second glass substrate 121 face each other. The formation region of the liquid crystal display panel among the surfaces of the first glass substrate 111 and the second glass substrate 121 is not shown, but an insulating film, a transparent electrode film, and a thin film transistor are formed as needed according to the liquid crystal display method. Switching elements such as TFT) or thin film diode (TFD), color filter (CF), and the like.

The sealing portion 13 is provided between the first layered body 11 and the second layered body 12, and is formed in a frame shape so as to surround the formation region of the liquid crystal display panel, and then the first layered body 11 and the second layered body 12. The sealing portion 13 is formed according to the number of formation regions. When a plurality of formation regions are formed as shown in the figure, a plurality of the formation regions are formed, and when the formation region is only one, only one is formed.

The inside of the sealing portion 13 may or may not be filled with liquid crystal. In the case of manufacturing by the liquid crystal dropping and bonding method, the inside of the sealing portion 13 in the sealing structure 10 is filled with liquid crystal, and the shape of each sealing portion 13 is set to have no opening in order to hold the liquid crystal inside. The continuous frame of the department. On the other hand, in the case of manufacturing by the liquid crystal injection method, the inside of the sealing portion 13 in the sealing structure 10 is usually not filled with liquid crystal, and the shape of each sealing portion 13 is a frame shape having an opening. The opening portion serves as an injection port for injecting liquid crystal into the inside in a subsequent step.

The sealing structure 10 satisfies the following formulas (1-1) and (2-1). Further, since there is no follower in the sealed structure 10, (Z1 × W1) and (Z2 × W2) in the above formula (1) correspond to 0, respectively.

Formula (1-1) (X1×Y1)/(A1×B1)>1

Formula (2-1) (X2×Y2)/(A2×B2)>1

In the formula (1-1), X1 represents the peel strength (N/mm) between the sealing portion 13 and the first glass substrate 111. The method for measuring the peel strength is not particularly limited, and measurement can be carried out using a known measuring device such as SAICAS. As X1, as long as the above relationship is satisfied, its value is not special. However, it is preferably 0.10 N/mm or more, and more preferably 0.15 N/mm or more, from the viewpoint of further suppressing peeling of the sealing portion or damage of the glass substrate at the time of peeling of the support structure. The upper limit is not particularly limited.

Y1 represents the total contact area (mm ² ) between the sealing portion 13 and the first glass substrate 111. In the case of the sealing portion 13 shown in Figs. 1 and 2, it means the sum of the areas where the six frame-shaped sealing portions 13 are in contact with the first glass substrate 11. In other words, it corresponds to the total area occupied by the sealing portion 13 in Fig. 1.

A1 represents the peel strength (N/mm) between the first glass substrate 111 and the first support structure 112. As described above, the first glass substrate 111 and the first support structure 112 are detachably bonded to each other. The value of A1 is not particularly limited as long as the above-mentioned relationship is satisfied. However, it is preferable to further suppress the peeling of the sealing portion or the damage of the glass substrate when the support structure is peeled off, and it is preferably 0.015 N/mm or less. More preferably, it is 0.010 N/mm or less. The upper limit is not particularly limited, but it is preferably 0.001 N/mm or more in terms of further suppressing the positional shift of the first glass substrate 111.

B1 represents the total contact area (mm ² ) between the first glass substrate 111 and the first support structure 112. In the case of FIGS. 1 and 2, the first glass substrate 111 and the first support structure 112 are in contact with each other over the entire surface, and the total contact area of the first glass substrate 111 corresponds to the first glass substrate 111 (or the first support structure 112). The area.

When the sealing structure 10 satisfies the relationship of the formula (1-1), when the first supporting structure 112 is peeled off from the self-sealing structure 10, peeling of the sealing portion 13 or damage of the first glass substrate 111 can be suppressed.

When only the peeling strength between the sealing portion 13 and the first glass substrate 111 and the difference in peel strength between the first glass substrate 111 and the first supporting structure 112 are controlled, when the first supporting structure 112 is peeled off, The peeling of the sealing portion 13 or the damage of the first glass substrate 111 cannot be sufficiently suppressed. It is presumed that the reason is that the stress when the first support structure 112 is peeled off is not only spread to a part but also to the entire surface. Therefore, the inventors of the present invention have thought of the sealing portion. The total contact area with the first glass substrate 111 and the total contact area between the first glass substrate 111 and the first support structure 112 play an important role in expressing the desired effect, and it is found that the formula (1-1) must be satisfied. Relationship. In the formula (1-1), the peeling strength X1 between the sealing portion 13 and the first glass substrate 111 is multiplied by the contact area Y1, and the first glass substrate 111 and the first support structure 112 are The peeling strength A1 is multiplied by the value obtained by the contact area B1, and if the value exceeds a specific value, it means that the peeling of the sealing portion or the damage of the glass substrate can be suppressed. Further, the value obtained by multiplying the peel strength by the total contact area means the sum of the peeling energies between the two.

Further, in the formula (1-1), (X1 × Y1) / (A1 × B1) exceeds 1, but it is possible to further suppress the peeling of the sealing portion or the damage of the glass substrate, preferably 1.10. More preferably, it is 1.40 or more. Furthermore, the upper limit is not particularly limited, but there are many cases of 10 or less.

In addition, when the sealing structure 10 satisfies the relationship of the formula (2-1), when the second supporting structure 122 is peeled off from the self-sealing structure 10, the peeling of the sealing portion 13 or the damage of the second glass substrate 121 can be suppressed.

In the formula (2-1), X2 represents the peel strength (N/mm) between the sealing portion 13 and the second glass substrate 121. The method for measuring the peel strength is not particularly limited, and measurement can be carried out using a known measuring device such as SAICAS. The preferred aspect of X2 is the same as the preferred aspect of X1 above.

Y2 represents the total contact area (mm ² ) between the sealing portion 13 and the second glass substrate 121. In the case of the sealing portion 13 shown in Figs. 1 and 2, it means the sum of the areas where the six frame-shaped sealing portions 13 are in contact with the second glass substrate 121.

A2 represents the peel strength (N/mm) between the second glass substrate 121 and the second support structure 122. As described above, the second glass substrate 121 and the second support structure 122 are detachably bonded to each other. The preferred aspect of A2 is the same as the preferred aspect of A1 above.

B2 represents the total contact area (mm ² ) between the second glass substrate 121 and the second support structure 122. In the case of FIGS. 1 and 2, the second glass substrate 121 and the second support structure 122 are in contact with each other over the entire surface, and the total contact area of the two is equivalent to the first glass substrate 111 (or the first support structure 112). The area.

Further, in the formula (2-1), (X2 × Y2) / (A2 × B2) is more than 1, but it is preferable to further suppress the peeling of the sealing portion or the damage of the glass substrate, and it is preferably 1.10 or more. More preferably, it is 1.40 or more. Furthermore, the upper limit is not particularly limited, but there are many cases of 10 or less.

Further, in the sealing structure 10, X1/A1 or X2/A2 is preferably 5 to 100, and more preferably 10 to 100, in terms of further suppressing peeling of the sealing portion or damage of the glass substrate.

Further, in the sealing structure 10, Y1/B1 or Y2/B2 is preferably 5 to 100, and more preferably 10 to 100, in terms of further suppressing peeling of the sealing portion or damage of the glass substrate.

As the first glass substrate 111 and the second glass substrate 121, a glass plate having a thickness of 0.3 mm or less is used. By setting the thickness to 0.3 mm or less, the liquid crystal display panel can be effectively made lighter. The size of the first glass substrate 111 and the second glass substrate 121 is not particularly limited. For example, it is preferably 100 mm or more in length × 100 mm or more in width, more preferably 500 mm in length or more than 500 mm in width. It is especially suitable for the length of 730 mm or more × 920 mm or more. By setting it to such a size, a plurality of liquid crystal display panels can be efficiently manufactured. As such a first glass substrate 111 and a second glass substrate 121, a known glass plate used for the production of a liquid crystal display panel is used.

The glass plate is obtained by melting a glass raw material and forming the molten glass into a plate shape. As such a molding method, a general method such as a floating method, a melting method, a flow down method, a rich method, a Luber method, or the like can be used. In particular, a glass plate having a thin plate thickness is preferably formed by a method in which a glass temporarily formed into a plate shape is heated to a moldable temperature and stretched by stretching or the like. It is thinner.

The type of the glass plate may not be limited, and is preferably an alkali-free borosilicate glass or boron bismuth. Acid glass, soda lime glass, sorghum glass, and other oxide-based glass containing cerium oxide as a main component. The oxide-based glass is preferably a glass having a content of cerium oxide of 40 to 90% by mass in terms of oxide.

Since the elution of the alkali metal component is likely to affect the liquid crystal, it is particularly preferable to use a glass (alkali-free glass) which does not substantially contain an alkali metal component. The alkali-free glass is represented by mass percentage based on oxide, and contains SiO ₂ : 50 to 66%, Al ₂ O ₃ : 10.5 to 24%, B ₂ O ₃ : 0 to 12%, and MgO: 0 to 8 %, CaO: 0 to 14.5%, SrO: 0 to 24%, BaO: 0 to 13.5%, MgO + CaO + SrO + BaO: 9 to 29.5%, and ZnO: 0 to 5%.

Regarding SiO ₂ , if the content is less than 50%, the strain point is not sufficiently increased, and the chemical durability is deteriorated, and the coefficient of thermal expansion is increased. When it exceeds 66%, the meltability is lowered and the devitrification temperature is increased. It is preferably 58 to 66 mol%.

Al ₂ O ₃ suppresses the phase separation of the glass, lowers the coefficient of thermal expansion, and increases the strain point. If the content is less than 10.5%, the effect is not exhibited, and if it exceeds 24%, the meltability of the glass is deteriorated. It is preferably 15 to 22%.

B ₂ O ₃ is not an essential component, but can improve the chemical durability of various chemicals used in the formation of a semiconductor, and can achieve a decrease in thermal expansion coefficient and density without increasing the viscosity at a high temperature. If the content exceeds 12%, the acid resistance is deteriorated and the strain point becomes low. It is preferably 5 to 12%.

MgO reduces the coefficient of thermal expansion in the alkaline earth metal oxide, and the strain point does not decrease, so it may not be an essential component but may be contained. When the content exceeds 8%, the chemical durability of various chemicals used in the formation of a semiconductor is lowered, and the phase separation of the glass is apt to occur.

CaO is not an essential component, but the solubility of glass can be improved by containing CaO. On the other hand, when it exceeds 14.5%, the thermal expansion coefficient will become large, and the devitrification temperature will also rise. It is preferably 0 to 9%.

SrO is not an essential component, but is a useful component because it suppresses the phase separation of the glass and improves the chemical durability of various chemicals used in the formation of a semiconductor. If the content exceeds 24%, the expansion coefficient increases. It is preferably 3 to 12.5%.

BaO is not an essential component, but is a useful component from the viewpoint of a small density and a small coefficient of thermal expansion. The content is 0 to 13.5%, preferably 0 to 2%.

If MgO+CaO+SrO+BaO is less than 9%, it is difficult to melt, and if it exceeds 29.5%, the density becomes large. MgO+CaO+SrO+BaO is preferably from 9 to 18%.

ZnO is not an essential component, but ZnO may be added in order to improve the meltability, clarity, and formability of the glass. The content is 0 to 5%, preferably 0 to 2%.

In the alkali-free glass, in addition to the above components, SO ₃ , F, and Cl may be added in a total amount of 5% or less in order to improve the meltability, clarity, and moldability of the glass.

The alkali-free glass preferably contains SiO ₂ : 58 to 66%, Al ₂ O ₃ : 15 to 22%, B ₂ O ₃ : 5 to 12%, and MgO: 0 by mass percentage based on oxide. ~8%, CaO: 0~9%, SrO: 3~12.5%, BaO: 0~2%, MgO+CaO+SrO+BaO: 9~18%, ZnO: 0~2%.

The strain point of the alkali-free glass is preferably 640 ° C or higher, more preferably 650 ° C or higher. The coefficient of thermal expansion is preferably less than 40 × 10 ^-7 / ° C, more preferably 30 × 10 ^-7 / ° C or more and less than 40 × 10 ^-7 / ° C. The density is preferably less than 2.60 g/cc, more preferably less than 2.55 g/cc, and even more preferably less than 2.50 g/cc.

The first support plate 113 and the second support plate 123 are not particularly limited as long as they can effectively support the first glass substrate 111 and the second glass substrate 121. Preferred examples thereof include a glass plate, a metal plate, and a resin plate. The difference in linear expansion coefficient between the first glass substrate 111 and the first support plate 113 is preferably 150 × 10 ^-7 / ° C or less, more preferably 100 × 10 ^-7 / ° C or less, and further preferably 50 × 10 ^-7 / °C below. Similarly, the difference in linear expansion coefficient between the second glass substrate 121 and the second support plate 123 is preferably 150 × 10 ^-7 / ° C or less, more preferably 100 × 10 ^-7 / ° C or less, and further preferably 50 × 10 ^-7 / °C or less.

As the glass plate, the same type as the user of the first glass substrate 111 or the second glass substrate 121 is used, and preferably an alkali-free borosilicate glass, a borosilicate glass, a soda lime glass, a sorghum glass, or the like is oxidized. Oxide-based glass as a main component. As the metal plate, stainless steel, copper, or the like can be exemplified.

As the resin sheet, polyethylene terephthalate resin, polycarbonate resin, polyimine resin, fluororesin, polyamide resin, polyarylamine resin, polyether oxime resin, polyether ketone can be exemplified Resin, polyetheretherketone resin, polyethylene naphthalate resin, polyacrylic resin, various liquid crystal polymer resins, polyoxyxylene resins, and the like.

The thickness of the first support plate 113 and the second support plate 123 is not particularly limited, and is preferably 0.1 to 1.1 mm in terms of effectively supporting the first glass substrate 111 and the second glass substrate 121. . The thickness of the first support plate 113 and the second support plate 123 is particularly preferably a plate thickness which can be applied to a production line of a conventional liquid crystal display panel. For example, the thickness of the glass substrate used in the production line of the current liquid crystal display panel is in the range of 0.5 to 1.2 mm, especially 0.7 mm. Therefore, it is preferable to consider the thickness of the first support plate 113 or the second support plate 123 in consideration of the thickness of the first glass substrate 111 or the second glass substrate 121 of 0.3 mm or less, for example, to make the first laminated body 11 Or the thickness of the second layered body 12 is 0.7 mm.

The first adhesive layer 114 can be bonded to the first glass substrate 111 in a peelable manner, and the peel strength between the first glass substrate 111 and the first adhesive layer 114 is lower than that of the first support plate 113 and the first adhesive layer 114. There are no special restrictions. The first adhesive layer 114 is mainly used to suppress the positional shift of the first glass substrate 111.

Further, since the second adhesive layer 124 is also substantially the same, only the first adhesive layer 114 will be described.

When the first support structure 112 is peeled off from the self-sealing structure 10, it is necessary to peel between the first glass substrate 111 and the first adhesive layer 114, and between the first support plate 113 and the first adhesive layer 114. Will be stripped. Therefore, it is preferable that the first adhesive layer 114 is not easily peeled off from the first support plate 113 and is easily peeled off from the first glass substrate 111.

The method of making the peeling strength of the first glass substrate 111 and the first adhesive layer 114 lower than the peeling strength of the first support plate 113 and the first adhesive layer 114 is, for example, a method in which a curable polyoxymethylene resin combination is used. As the first adhesive layer 114, the curable polyoxynoxy resin composition is applied onto the first support plate 113 and cured to form the first adhesive layer 114, and then bonded to the first adhesive layer 114. The first glass substrate 111.

In addition, even if the curable polyoxynoxy resin composition is brought into contact with both the first glass substrate 111 and the first support plate 113 and cured, the peeling strength with the first support plate 113 is higher than that of the first glass. In the case of the peeling strength of the substrate 111, the curable polyoxyxene resin composition may be brought into contact with both the first glass substrate 111 and the first support plate 113 to be cured. As such a method, for example, a method of subjecting the surface of the first support plate 113 to surface treatment for increasing the binding strength to increase the concentration of the stanol group can be mentioned.

The curable polyoxyxene resin composition preferably contains an additive such as a linear organic alkenyl polysiloxane, a linear organic hydrogen polyoxyalkylene, and a catalyst, and is hardened by heating to form an addition reaction type hardening. Polyoxygenated resin composition. The addition reaction type curable polyanthracene resin composition is easier to carry out the curing reaction than the other curable polyoxynoxy resin composition, and the curing shrinkage is also low, and the peeling of the cured product is easy. The form of the addition reaction type curable polyanthracene resin composition may, for example, be a solvent type, an emulsion type or a solventless type, and may be in any form. The addition reaction type curable polyoxyxene resin composition is preferably disclosed, for example, in International Publication No. 2011/024775.

Further, in the first embodiment, the first adhesive layer 114 and the second adhesive layer 124 are used, but between the first glass substrate 111 and the first support plate 113, and the second glass substrate 121 and the second support plate. When the 123 layers can be peelably laminated in a desired relationship, the first adhesive layer 114 and the second adhesive layer 124 may not be used.

The sealing portion 13 is not particularly limited as long as the first glass substrate 111 and the second glass substrate 121 can be used, and a sealing material such as an epoxy resin can be cured by using a member generally used for the production of the member for a liquid crystal display panel. Adult.

The width of the sealing portion 13 is preferably 0.08 mm or more. By setting the width to 0.08 mm or more, the first glass substrate 111 and the second glass substrate 121 can be effectively adhered to by the sealing portion 13, and the peeling of the sealing portion 13 and the first glass substrate 111 and the second can be effectively suppressed. The glass substrate 121 is damaged. The width is more preferably 0.1 mm or more, and further preferably 0.5 mm or more. The width of the first glass substrate 111 and the second glass substrate 121 can be sufficiently increased as long as the width is about 0.1 mm. However, from the viewpoint of productivity and the like, it is preferably 5 mm or less, and more preferably 3 mm or less.

Further, in the case where the sealing portion 13 is provided, it is preferable that the distance between the sealing portion 13 located at the outermost peripheral portion and the edge of the laminated body is set within a range of 10 mm. By shortening the distance from the edge of the laminate, the peeling of the sealing portion 13 and the breakage of the first glass substrate 111 and the second glass substrate 121 can be effectively suppressed. The distance between the sealing portion 13 located at the outermost periphery and the end of the laminated body is preferably in the range of 5 mm, and more preferably in the range of 3 mm.

(Manufacturing method of sealing structure)

The method for producing the sealed structure 10 is not particularly limited, and it can be produced by a known method. For example, after the first layered body 11 and the second layered body 12 are produced, the first glass substrate 111 of the first layered body 11 or the second glass substrate 121 of the second layered body 12 is coated. The cloth becomes a sealing material for the sealing portion 13. Thereafter, when a liquid crystal dropping and bonding method is employed, liquid crystal is dropped on the formation region, and the first laminate 11 and the second laminate 12 are laminated with a sealing material and a liquid crystal. Moreover, in the case of using the liquid crystal injection method, the first layered body 11 and the second layered body 12 are laminated via a sealing material.

Further, the coating method of the sealing material is not particularly limited, and it may be drawn using a dispenser or an inkjet device, or may be printed by screen printing. In addition, the sealing material is not limited to an epoxy resin, and may be, for example, an ultraviolet curable epoxy-modified acrylic resin.

After the first layered body 11 and the second layered body 12 are laminated, the sealing material is cured. The hardening of the sealing material may be performed by an optimum hardening method depending on the hardening method of the sealing material, for example, curing by heating in the case of using an epoxy resin or the like as a sealing material, and using ultraviolet curing epoxy-modified acrylic acid. When a resin or the like is used as the sealing material, it is cured by irradiation with ultraviolet rays.

In addition, the first layered body 11 is produced by, for example, attaching the first glass substrate 111 to the first support structure 112 in a peelable manner. The first support structure 112 is produced by, for example, applying a curable polyoxynoxy resin composition as the first adhesive layer 114 to the first support plate 113 and curing the curable polyoxynoxy resin composition. The first layered body 11 is produced by, for example, bonding the first glass substrate 111 to the first adhesive layer 114 of the first support structure 112 manufactured in this manner. Examples of the bonding method include a non-contact pressure bonding method using a pressurizing chamber, and a contact pressure bonding method using a roll or a press. The second laminated body 12 can also be manufactured in substantially the same manner.

In each of the first glass substrate 111 of the first layered product 11 and the second glass substrate 121 of the second layered body 12, an insulating film, a transparent electrode film, and a thin film transistor are formed as needed according to a liquid crystal display method. A switching element such as (TFT) or a thin film diode (TFD), a color filter (CF), or the like (patterning step). Further, an alignment film such as a polyimide film is printed so that liquid crystal molecules can be aligned, and a groove for alignment is formed (friction step).

(Member for liquid crystal display panel)

The first support structure 112 and the second support structure 122 are peeled off from the self-sealing structure 10 to manufacture the liquid crystal display panel member 20.

The peeling of the first support structure 112 from the sealing structure 10 can be performed by, for example, inserting a sharp portion at the end of one of the liquid crystal display panel member 20 and the first support structure 112, particularly the corner portion. In the blade shape, after the separator is given, a mixed fluid of water and compressed air is blown to the insertion portion. It is preferable that the peeling is performed from the end portion of the liquid crystal display panel member 20 and the first support structure 112, in particular, the corner portion toward the opposite corner portion, as shown in FIG.

Preferably, both sides of the sealing structure 10 are vacuum-adsorbed by a plurality of vacuum suction pads, and in this state, the interface between the liquid crystal display panel member 20 and one end portion of the first support structure 112, particularly the corner portion, is sharply inserted. In the blade shape, the first support structure 112 is gradually peeled off from the insertion portion, and the vacuum adsorption pad to which the first support structure 112 is adsorbed is lifted and moved.

The peeling of the second support structure 122 from the self-sealing structure 10 (the member for liquid crystal display panel 20) can also be performed in substantially the same manner.

In the case where the liquid crystal dropping and bonding method is employed, the liquid crystal display panel sealing portion 13 of each of the manufactured liquid crystal display panel members 20 is filled with liquid crystal. Therefore, for example, in the case where a plurality of sealing portions 13 are formed, the liquid crystal display panel can be manufactured by being divided into the respective sealing portions 13.

Further, in the case of the liquid crystal injection method, the sealing portion 13 which is a liquid crystal display panel of each of the liquid crystal display panel members 20 to be manufactured is not filled with liquid crystal. Therefore, liquid crystal is injected into the sealing portion 13 to form a liquid crystal display panel. Specifically, for example, liquid crystal is injected in the state of the liquid crystal display panel member 20, and thereafter, it is cut into individual sealing portions 13 to form a liquid crystal display panel. Further, for example, after the liquid crystal display panel member 20 is divided into the respective sealing portions 13, the liquid crystal display panel may be formed by injecting liquid crystal into each of the sealing portions 13, or the liquid crystal display panel member 20 may be divided into After a certain size of the plurality of sealing portions 13, a liquid crystal is injected into each of the sealing portions 13, and further divided into individual sealing portions 13 to form a liquid crystal display panel.

A liquid crystal display panel manufactured in this manner can be used as a display portion of various electronic machines. Examples of the electronic device include a portable computer such as a portable telephone or a notebook computer, a portable information device such as a PDA (Personal Digital Assistants), a workstation, a digital still camera, a digital video camera, and a vehicle. Monitors, LCD TVs, car navigation devices, electronic notebooks, calculators, POS (point-of-sale) terminals, etc.

Furthermore, the liquid crystal display panel can be made into a liquid crystal display panel of a transmissive type, a reflective type, or a semi-transmissive type, and a single color or a color. Further, various liquid crystal display panels of a passive matrix type and an active matrix type can be manufactured.

<Second embodiment>

Hereinafter, the second embodiment of the sealing structure will be specifically described with reference to the drawings.

4 and 5 are a plan view and a cross-sectional view taken along line A-A showing an example of the second embodiment of the seal structure.

The sealing structure 200 is used to manufacture the liquid crystal display panel member 20, and has a portion which becomes the liquid crystal display panel member 20 in a part as shown in FIGS. 4 and 5 . The sealing structure 200 includes a first layered body 11 , a second layered body 12 , a sealing portion 13 , and a rear portion 14 .

In the form of the sealing structure 200, it is possible to further suppress damage to the portion of the liquid crystal display panel member when the pair of support structures are peeled off from the self-sealing structure.

Specifically, when the support structure is peeled off from each of the glass substrates of the self-sealing structure, a contact portion is provided in the vicinity of the seal portion different from the seal portion, whereby the stress locally applied to the seal portion can be reduced, thereby suppressing Peeling of the sealing portion, that is, peeling of the glass substrate and the sealing portion. Moreover, by providing the adhesion portion different from the sealing portion in the vicinity of the sealing portion, the stress locally applied to the glass substrate can be reduced, and the damage of the glass substrate can be suppressed.

The sealing structure 200 shown in FIGS. 4 and 5 has the same configuration as that of the sealing structure 10 shown in FIG. 1 except for the connection portion 14. Therefore, the same components are denoted by the same reference numerals, and the description thereof is omitted. The main portion 14 will be mainly described.

The rear portion 14 is formed into a shape and arrangement in which the first laminated body 11 and the second laminated body 12 are attached to the outer side of the sealing portion 13 , and the first supporting structure 112 or the second supporting structure 122 is peeled off from the self-sealing structure 10 . In this case, damage to the portion of the liquid crystal display panel member 20, specifically, peeling of the sealing portion 13 and damage of the first glass substrate 111 and the second glass substrate 121 can be suppressed. In other words, the liquid crystal display panel member 20 is provided as long as it can suppress peeling. The shape, arrangement, and the like of the subsequent portion 14 are not particularly limited.

The following portion 14 is not particularly limited as long as it can follow the first glass substrate 111 and the second glass substrate 121, and is formed by curing an adhesive material such as an epoxy resin.

The rear portion 14 is linearly disposed along the sealing portion 13 as shown in FIG. 4, for example. For example, when the sealing structure 200 has a rectangular shape, it is disposed between the long side of the sealing structure 200 and the sealing portion 13 adjacent to the long side so as to extend in the longitudinal direction of the sealing structure 200, and The seal portions 13 in the short-side direction of the seal structure 200 are disposed to extend in the longitudinal direction of the seal structure 200.

In the case where the linear connecting portion 14 is provided, it is preferably provided in the same length as the region in which the sealing portion 13 is provided in the longitudinal direction of the sealing structure 200, or is provided in the same length. Long area. Specifically, as shown in FIG. 4, when three sealing portions 13 are provided in the longitudinal direction of the sealing structure 200, it is preferably the same as the region in which the three sealing portions 13 are provided. The area is set with the same length or longer. By providing such a region and length, for example, when the second support structure 122 is peeled off from one corner as shown in FIG. 6, the peeling boundary line L is located on the sealing portion 13, and is also located on the rear portion 14. It is possible to suppress the partial stress applied to only one portion of the sealing portion 13, and it is possible to suppress the peeling of the sealing portion 13 and the damage of the first glass substrate 111 and the second glass substrate 121.

Further, in the case where the sealing portion 13 or the rear portion 14 is provided, it is preferable to set the distance between the sealing portion 13 or the rear portion 14 located at the outermost peripheral portion to the end edge of the laminated body within a range of 10 mm. . By shortening the distance from the edge of the laminate, the peeling of the sealing portion 13 and the breakage of the first glass substrate 111 and the second glass substrate 121 can be effectively suppressed. The sealing portion 13 or the adjoining portion 14 located at the outermost peripheral portion is preferably spaced apart from the end of the laminated body by a distance of 5 mm, and more preferably in the range of 3 mm.

Further, when the linear connecting portion 14 is provided, the connecting portion 14 provided between the long side of the sealing structure 200 and the sealing portion 13 adjacent to the long side is preferably the sealing portion 13 The distance between them is set within 10 mm. By shortening the distance between the sealing portion 13 and the adhesion portion 14, the peeling of the sealing portion 13 and the damage of the first glass substrate 111 and the second glass substrate 121 can be effectively suppressed. The distance from the sealing portion 13 is preferably in the range of 5 mm, and more preferably in the range of 3 mm. Further, the distance from the sealing portion 13 does not need to be fixed, and may be different in the longitudinal direction of the linear connecting portion 14, but preferably it is within the above range as a whole. Further, the closer the distance between the sealing portion 13 and the rear portion 14 is, the better the contact portion 14 may be provided in contact with the sealing portion 13. Here, the distance from the seal portion 13 to the rear portion 14 is a distance between the side surface portion of the seal portion 13 and the side surface portion of the joint portion 14.

In the case where the linear connecting portion 14 is provided, it is preferably provided at least between the long side of the sealing structure 200 and the sealing portion 13 adjacent to the long side, but it is preferably provided also in the sealing structure 200. The sealing portions 13 in the short side direction are located between each other. Further, in the case where three or more sealing portions 13 are provided in the short-side direction of the sealing structure 200, it is preferably provided between all the sealing portions 13. The connection portion 14 provided between the sealing portions 13 provided in the short-side direction of the sealing structure 200 is preferably provided so as to equalize the stress on the sealing portions 13 located on both sides of the sealing portion 14. In the central portion of the sealing portion 13 from each other.

The width of the linear end portion 14 is preferably 0.08 mm or more. By setting the width to 0.08 mm or more, the first glass substrate 111 and the second glass substrate 121 can be efficiently adhered by the bonding portion 14, and peeling of the sealing portion and breakage of the glass substrate can be effectively suppressed. The width is more preferably 0.1 mm or more, and further preferably 0.5 mm or more. The width of the first glass substrate 111 and the second glass substrate 121 can be sufficiently increased as long as the width is about 0.1 mm. From the viewpoint of productivity and the like, it is preferably 5 mm or less, more preferably 3 mm or less.

The sealing structure 200 satisfies the following formulas (1) and (2).

Equation (1) {(X1×Y1)+(Z1×W1)}/(A1×B1)>1

Equation (2) {(X2×Y2)+(Z2×W2)}/(A2×B2)>1

In the formula (1), X1, Y1, A1 and B1 are as defined above.

In the formula (1), Z1 represents the peel strength (N/mm) between the adhesion portion 14 and the first glass substrate 111. The method for measuring the peel strength is not particularly limited, and measurement can be carried out using a known measuring device such as SAICAS. Z1 is not particularly limited as long as the above-mentioned relationship is satisfied, and it is preferable to further suppress the peeling of the sealing portion or the damage of the glass substrate at the time of peeling of the support structure, and it is preferably 0.10 N/mm or more. Good is 0.15 N/mm or more. The upper limit is not particularly limited.

W1 represents the total contact area (mm ² ) between the adhesion portion 14 and the first glass substrate 111. In the case of the contact portion 14 shown in FIGS. 4 and 5, it means the sum of the areas where the three linear end portions 14 are in contact with the first glass substrate 11. In other words, it corresponds to the total area occupied by the lands 14 in FIG.

When the sealing structure 200 satisfies the relationship of the formula (1), when the first supporting structure 112 is peeled off from the self-sealing structure 200, peeling of the sealing portion 13 or damage of the first glass substrate 111 can be suppressed.

Only the peeling strength between the sealing portion 13 and the first glass substrate 111, the peeling strength between the bonding portion 14 and the first glass substrate 111, and the peeling between the first glass substrate 111 and the first supporting structure 112 are controlled. When the first support structure 112 is peeled off, the peeling of the sealing portion 13 or the damage of the first glass substrate 111 cannot be sufficiently suppressed. It is presumed that the reason is that the stress when the first support structure 112 is peeled off affects not only the local portion but also the entire surface. The inventors of the present invention thought of the total contact area of the sealing portion 13 and the first glass substrate 111, the total contact area between the bonding portion 14 and the first glass substrate 121, and the total contact between the first glass substrate 111 and the first supporting structure 112. The area plays an important role in the performance desired, and it is found that it is important to satisfy the relationship of formula (1). That is, in the formula (1), the peeling strength X1 between the sealing portion 13 and the first glass substrate 111 is multiplied by the contact area Y1, and the peeling strength Z1 between the bonding portion 14 and the first glass substrate 121 is obtained. The sum of the values obtained by multiplying the contact area W1 is compared with the value obtained by multiplying the peeling strength A1 between the first glass substrate 111 and the first support structure 112 by the contact area B1, and if the value exceeds a specific value, it means It is possible to suppress peeling of the sealing portion or damage of the glass substrate.

Further, in the formula (1), although {(X1 × Y1) + (Z1 × W1)} / (A1 × B1) exceeds 1, the peeling of the sealing portion or the damage of the glass substrate can be further suppressed. In other words, it is preferably 1.1 or more, and more preferably 1.4 or more. Furthermore, the upper limit is not particularly limited, but there are many cases of 10 or less.

In addition, when the sealing structure 200 satisfies the relationship of the formula (2), when the second supporting structure 122 is peeled off from the self-sealing structure 200, the peeling of the sealing portion 13 or the damage of the second glass substrate 121 can be suppressed.

In the formula (2), X2, Y2, A2 and B2 are as defined above.

In the formula (2), Z2 represents the peel strength (N/mm) between the adhesion portion 14 and the second glass substrate 121. The method for measuring the peel strength is not particularly limited, and measurement can be carried out using a known measuring device such as SAICAS. The preferred aspect of Z2 is synonymous with the preferred aspect of Z1.

W2 represents the total contact area (mm ² ) between the adhesion portion 14 and the first glass substrate 121. In the case of the contact portion 14 shown in FIGS. 4 and 5, it means the sum of the areas where the three linear end portions 14 are in contact with the second glass substrate 121.

Further, in the formula (2), although {(X2 × Y2) + (Z2 × W2)} / (A2 × B2) exceeds 1, the aspect of peeling of the sealing portion or damage of the glass substrate can be further suppressed. Preferably, it is 1.1 or more, More preferably, it is 1.4 or more. Furthermore, the upper limit is not particularly limited, but there are many cases of 10 or less.

Further, in the sealing structure 200, X1/A1 or X2/A2 is preferably 5 to 100, and more preferably 10 to 100, in terms of further suppressing peeling of the sealing portion or damage of the glass substrate.

Further, in the sealing structure 200, Z1/A1 or Z2/A2 is preferably 5 to 100, and more preferably 10 to 100, in terms of further suppressing peeling of the sealing portion or damage of the glass substrate.

Further, in the sealing structure 200, peeling of the sealing portion or glass can be further suppressed. In terms of damage of the substrate, Y1/B1 or Y2/B2 is preferably 5 to 100, more preferably 10 to 100.

Further, in the sealing structure 200, in terms of further preventing the peeling of the sealing portion or the damage of the glass substrate, W1/B1 or W2/B2 is preferably 5 to 100, more preferably 10 to 100.

(Manufacturing method of sealing structure)

The method for producing the sealed structure 200 is not particularly limited, and it can be produced by a known method. For example, after the first layered body 11 and the second layered body 12 are produced, the first glass substrate 111 of the first layered body 11 or the second glass substrate 121 of the second layered body 12 is coated. The cloth serves as a sealing material for the sealing portion 13, and is formed into a specific shape in which the adhesive material of the bonding portion 14 is applied to the outside thereof. Then, in the case where the liquid crystal dropping and bonding method is employed, after the liquid crystal is dropped in the formation region, the first laminate 11 and the second laminate 12 are laminated via the sealing material and the liquid crystal. Moreover, in the case of using the liquid crystal injection method, the first layered body 11 and the second layered body 12 are laminated with a sealing material and a bonding material.

Further, the method of applying the sealing material and the bonding material is not particularly limited, and it may be drawn using a dispenser or an inkjet device, or may be printed by screen printing. In addition, the sealing material and the bonding material are not limited to the epoxy resin, and may be, for example, an ultraviolet curing epoxy-modified acrylic resin.

The sealing portion 13 and the sealing portion 14 may be formed of the same material or may be formed of different materials.

After the first laminate 11 and the second laminate 12 are laminated, the sealing material and the subsequent material are cured. The hardening of the sealing material and the bonding material can be carried out according to the curing method of the sealing material and the bonding material, for example, by using an epoxy resin or the like as a sealing material and a bonding material, and hardening by heating. When an ultraviolet curable epoxy-modified acrylic resin or the like is used as a sealing material and a bonding material, it is cured by irradiation with ultraviolet rays. When the sealing material is different from the hardening method in the subsequent material, It can be divided into two or more steps for hardening.

The formation of the succeeding portion 14 is preferably performed simultaneously with the formation of the sealing portion 13. Specifically, it is preferable to apply the bonding material to be the bonding portion 14 simultaneously with the application of the sealing material to be the sealing portion 13, and to laminate the first laminated body 11 with the coating material interposing the sealing material and the bonding material. The second layered body 12 is cured by heating or the like. It is particularly preferable that the sealing material for forming the sealing portion 13 and the bonding material for forming the bonding portion 14 be made of the same material, and the sealing material and the subsequent material may be applied in the same step using the same apparatus. By using such a method, the adhesion portion 14 can be formed efficiently.

Further, the sealing material and the bonding material may be formed by applying one of the first glass substrate 111 of the first laminated body 11 or the second glass substrate 121 of the second laminated body 12 to each other, or may be mutually It is formed by coating independently. For example, a sealing material may be applied to the first glass substrate 111 of the first layered body 11, and the second glass substrate 121 of the second layered body 12 may be coated with a bonding material, or may be in an opposite state.

The first support structure 112 and the second support structure 122 are peeled off from the self-sealing structure 200 to manufacture the liquid crystal display panel member 20. The method of peeling can be carried out in the same manner as in the first embodiment.

More specifically, for example, as shown in FIG. 6 , the first support structure 112 is peeled off from one end side. Specifically, one corner portion of the self-sealing structure 200 is gradually peeled off in the direction of the opposite corner portion. At this time, by providing the adhesion portion 14 in the vicinity of the sealing portion 13, the peeling boundary line L which is easy to apply stress on the boundary line between the peeled portion and the portion to be peeled off is located on the sealing portion 13, and is also located nearby. On the 14th. Thereby, it is possible to suppress the stress from being locally applied to only one portion of the sealing portion 13, and it is possible to suppress the peeling of the sealing portion 13, and specifically, the peeling of the first glass substrate 111 from the sealing portion 13 and the second glass substrate 121 can be suppressed. Peeling of the sealing portion 13. Similarly, the stress can be locally applied to the first glass substrate 111 and the second glass substrate 121, and the first glass substrate 111 and the second glass substrate 121 can be prevented from being damaged. Furthermore, in the case of peeling off the second support structure 122, it is also possible to base This is done in the same way, and the same effect can be obtained.

Further, in general, the end portion 14 is an unnecessary portion, and is cut off from the sealing portion 13 and discarded.

FIG. 7 is a plan view showing a modification of the sealing structure 10, and in particular, a plan view showing a modification of the sealing portion 14.

In the seal structure 300, the configuration of the first laminate body 11, the second laminate body 12, and the seal portion 13 other than the joint portion 14 is the same as that of the seal structure body 200 shown in Figs. The sealing structure 300 is different in that the rear portion 14 is provided along the peripheral edge portions of the first layered body 11 and the second layered body 12 so as to surround the entirety of the plurality of sealing portions 13 .

By providing the frame-shaped connecting portion 14 so as to surround the entirety of the plurality of sealing portions 13, the peeling boundary line L as shown in FIG. 6 is also located on the sealing portion 13 and also on the connecting portion 14, thereby suppressing stress. Only partial application to the sealing portion 13 can suppress peeling of the sealing portion 13 . Specifically, peeling of the first glass substrate 111 from the sealing portion 13 and peeling of the second glass substrate 121 from the sealing portion 13 can be suppressed. Similarly, the stress can be locally applied to the first glass substrate 111 and the second glass substrate 121, and the first glass substrate 111 and the second glass substrate 121 can be prevented from being damaged.

In the case where the frame-shaped connecting portion 14 is provided, the connecting portion 14 provided between the long side of the sealing structure 10 and the sealing portion 13 adjacent to the long side is preferably spaced apart from the sealing portion 13 by Within 10 mm. By shortening the distance between the sealing portion 13 and the adhesion portion 14, the peeling of the sealing portion 13 and the damage of the first glass substrate 111 and the second glass substrate 121 can be effectively suppressed. The distance from the sealing portion 13 is preferably in the range of 5 mm, and more preferably in the range of 3 mm. Further, the distance from the sealing portion 13 does not necessarily need to be fixed, and may be different in the longitudinal direction of the connecting portion 14, but preferably it is within the above range as a whole.

Moreover, in the case where the frame-shaped rear portion 14 is provided, it is preferably located at the outermost periphery. The distance between the rear portion 14 and the end of the laminate is set to be within 10 mm. By shortening the distance from the edge of the laminate, the peeling of the sealing portion 13 and the breakage of the first glass substrate 111 and the second glass substrate 121 can be effectively suppressed. The frame-like rear portion 14 is spaced apart from the end of the laminate body by a distance of preferably 5 mm, and more preferably in the range of 3 mm.

Moreover, it is preferable that the contact portion 14 provided between the short side of the sealing structure 10 and the sealing portion 13 adjacent to the short side is disposed within a range of 10 mm from the sealing portion 13. By shortening the distance between the sealing portion 13 and the adhesion portion 14, the peeling of the sealing portion 13 and the damage of the first glass substrate 111 and the second glass substrate 121 can be effectively suppressed. The distance from the sealing portion 13 is preferably in the range of 5 mm, and more preferably in the range of 3 mm. Further, the distance from the sealing portion 13 does not necessarily need to be fixed, and may be different in the longitudinal direction of the connecting portion 14, but preferably it is within the above range as a whole.

The width of the frame-like joint portion 14 is preferably 0.08 mm or more. By setting the width to 0.08 mm or more, the first glass substrate 111 and the second glass substrate 121 can be efficiently adhered by the bonding portion 14, and the peeling of the sealing portion 13 and the first glass substrate 111 and the second can be effectively suppressed. The glass substrate 121 is damaged. The width is more preferably 0.1 mm or more, and further preferably 0.5 mm or more. The width of the first glass substrate 111 and the second glass substrate 121 can be sufficiently increased as long as the width is about 0.1 mm. From the viewpoint of productivity and the like, it is preferably 5 mm or less, more preferably 3 mm or less.

FIG. 8 is a plan view showing another modification of the sealing structure 10, and particularly shows a plan view showing a modification of the attachment portion 14.

In the seal structure 400, the configuration of the first laminate body 11, the second laminate body 12, and the seal portion 13 other than the joint portion 14 is also the same as that of the seal structure 100 shown in Figs. The seal structure 400 is different in that the joint portion 14 is provided to surround each of the plurality of seal portions 13.

By providing the frame-shaped connecting portion 14 so as to surround each of the plurality of sealing portions 13, the peeling boundary line L as shown in FIG. 3 is also located on the sealing portion 13 while being located next to In the portion 14 , the stress can be suppressed from being partially applied to only one portion of the sealing portion 13 , and the peeling of the sealing portion 13 can be suppressed. Specifically, the peeling of the first glass substrate 111 and the sealing portion 13 and the second glass substrate 121 can be suppressed. Peeling from the sealing portion 13. Similarly, the stress can be locally applied to the first glass substrate 111 and the second glass substrate 121, and the first glass substrate 111 and the second glass substrate 121 can be prevented from being damaged. In particular, by providing the frame-shaped connecting portion 14 so as to surround each of the plurality of sealing portions 13, the peeling of the sealing portion 13 and the first glass can be effectively suppressed as compared with the case where the other shape of the connecting portion 14 is provided. The substrate 111 and the second glass substrate 121 are damaged.

In the case where the frame-shaped joint portion 14 as described above is provided, the distance between the rear portion 14 and the sealing portion 13 is preferably set within a range of 10 mm. By shortening the distance between the sealing portion 13 and the adhesion portion 14, the peeling of the sealing portion 13 and the damage of the first glass substrate 111 and the second glass substrate 121 can be effectively suppressed. The distance from the sealing portion 13 is preferably in the range of 5 mm, and more preferably in the range of 3 mm. Further, the distance from the sealing portion 13 does not necessarily need to be fixed, and may be different in the longitudinal direction (circumferential direction) of the connecting portion 14, but preferably it is within the above range as a whole.

Further, in the case where the frame-shaped connecting portion 14 is provided as described above, it is preferable that the distance between the end portion 14 located at the outermost peripheral portion and the edge of the laminated body is set within a range of 10 mm. By shortening the distance from the edge of the laminate, the peeling of the sealing portion 13 and the breakage of the first glass substrate 111 and the second glass substrate 121 can be effectively suppressed. The frame-like connecting portion 14 as described above is preferably spaced apart from the end of the laminated body by a distance of 5 mm, and more preferably in the range of 3 mm.

The width of the frame-like joint portion 14 is preferably 0.08 mm or more. By setting the width to 0.08 mm or more, the first glass substrate 111 and the second glass substrate 121 can be efficiently adhered by the bonding portion 14, and the peeling of the sealing portion 13 and the first glass substrate 111 and the second can be effectively suppressed. The glass substrate 121 is damaged. The width is more preferably 0.1 mm or more, and further preferably 0.5 mm or more. The width is usually about 0.1 mm, and the first glass substrate 111 and the first 2 The glass substrate 121 is preferably 5 mm or less, and more preferably 3 mm or less from the viewpoint of productivity.

In the above, the representative shape and the like of the adhesive portion 14 have been described. However, the shape of the adhesive portion 14 or the like is suppressed to be liquid crystal display when the first support structure 112 and the second support structure 122 are peeled off from the self-sealing structure 10 . The damage of the portion of the panel member 20, specifically, the peeling of the sealing portion 13 and the shape and arrangement of the damage of the first glass substrate 111 and the second glass substrate 121 are not particularly limited.

For example, the splicing portion 14 is not limited to the one that surrounds the plurality of sealing portions 13 as shown in FIG. 7 or the respective sealing portions 13 as shown in FIG. 8, and may only enclose the plurality of sealing portions 13 One of the adjacent partial sealing portions 13 may be arranged in a lattice shape between the plurality of sealing portions 13, and the respective shapes as described above may be combined according to the number or arrangement of the sealing portions 13 as needed. Further, the linear or frame-shaped connecting portion 14 does not necessarily need to be composed of a continuous linear portion, and may be formed of a discontinuous linear portion such as a broken line.

In the above, the method of manufacturing the member for a liquid crystal display panel of the embodiment has been described. However, the configuration may be appropriately changed as needed within the limits of the gist of the invention. For example, the sealing structure is not limited to the number of sealing portions as shown in the drawings, and may have a plurality of sealing portions. According to the one having a plurality of sealing portions, the liquid crystal display panel can be manufactured more efficiently. Moreover, when a plurality of sealing portions are provided, the size, arrangement, and the like of the respective sealing portions are not limited to those shown in the drawings, and may be appropriately changed. Further, the rear portion can be appropriately changed in size, arrangement, and the like in accordance with the size, arrangement, and the like of the sealing portion.

[Examples]

Hereinafter, the present invention will be specifically described by way of examples, but the invention is not limited to the examples.

In the following examples and comparative examples, a glass plate composed of alkali-free borosilicate glass (length 170 mm, width 125 mm, thickness 0.3 mm, linear expansion coefficient 38×10 ^-7 /° C) was used as the glass substrate. The brand name "AN100" manufactured by Asahi Glass Co., Ltd.). Further, as the support plate, a glass plate (length 170 mm, width 125 mm, plate thickness 0.4 mm, linear expansion coefficient 38×10 ^-7 /°C), which is also made of alkali-free borosilicate glass, is used as a product name manufactured by Asahi Glass Co., Ltd. "AN100").

<Example 1>

One of the main faces of the support plate is cleaned with pure water, and then subjected to UV (ultraviolet) cleaning to purify it.

Next, as a component (A), a linear vinyl methyl polyoxyalkylene ("VDT-127", viscosity at 25 ° C, 700-800 cP (centipoise): Azmax, organic polyoxyl 1 The mol% of the vinyl group in the mol: 0.325), and the linear methyl hydrogen polyoxyalkylene as the component (B) ("HMS-301", the viscosity at 25 ° C 25-35 cP (centipoise): Made by Azmax, the number of hydrogen atoms bonded to the deuterium atom in one molecule: 8) is mixed in such a manner that the molar ratio (hydrogen atom/vinyl group) of all the vinyl groups to all the hydrogen atoms bonded to the deuterium atom becomes 0.9. In addition, 1 part by mass of the oxime compound having an acetylene-based unsaturated group represented by the following formula (1) as the component (C) is mixed with 100 parts by weight of the oxirane mixture.

HC≡CC(CH ₃ ) ₂ -O-Si(CH ₃ ) ₃ (1)

Then, a platinum-based catalyst (manufactured by Shin-Etsu Silicone Co., Ltd., CAT) is added to the total amount of the component (A), the component (B), and the component (C) in a platinum-converted platinum metal concentration of 100 ppm. -PL-56) A mixture of organopolyoxane compositions was obtained.

The obtained mixed liquid was applied onto the first main surface of the previously purified support plate by a die coater (speed 5 mm/s, GAP (gap) 150 μm, coating pressure 95 kPa). Thereafter, the mixture (resin layer for forming a resin layer) applied on the support plate was allowed to stand at room temperature for 10 minutes, and then heat-hardened at 180 ° C for 60 minutes in the air to serve the entire support plate. A hardened polyoxymethylene resin layer having a thickness of 15 μm was formed on the surface to obtain a support structure A (first support structure).

Next, pure water cleaning is performed on one main surface of the glass substrate, followed by UV cleaning. Make it clean.

Thereafter, after the support structure A and the glass substrate are aligned, the peeling surface of the first main surface of the glass substrate and the cured polyoxyl resin layer of the support structure A is applied at room temperature using a vacuum pressurizing device. The laminate A (first laminate) is obtained by close contact.

Next, another laminate B (second laminate) is obtained by the same procedure as the above procedure.

Then, the sealing resin liquid is drawn into a frame shape by the dispensing method so as to have the same shape as the sealing portion 13 shown in FIG. 4 on the main surface side of the glass substrate A of the laminated body A.

Further, on the main surface side of the glass substrate A of the laminated body A, the resin liquid to be subsequently used is drawn in a straight line shape in the same shape as the bonding portion 14 shown in FIG. 4 by a dispensing method. Then, the laminated body A and the laminated body B are bonded together so that the glass substrate A of the laminated body A faces the glass substrate B of the laminated body B, and the sealing structure 1 is obtained by heat-hardening.

Further, the width of the sealing portion and the width of the succeeding portion were 0.08 mm and 0.08 mm, respectively.

In the sealing structure 1, the peeling strength between the sealing portion and a glass substrate A was measured by SAICAS (manufactured by DAIPLA WINTES Co., Ltd.), and it was 0.11 N/mm. Further, the total contact area of the sealing portion with a glass A was 960 mm ² .

In the sealing structure 1, the peeling strength between the adhesive portion and a glass substrate A was measured by SAICAS (manufactured by DAIPLA WINTES Co., Ltd.), and it was 0.11 N/mm. Further, the total contact area of the succeeding portion with a glass substrate A was 408 mm ² .

In the seal structure 1, the peel strength between a glass substrate A and the support structure A was measured by SAICAS (manufactured by DAIPLA WINTES Co., Ltd.), and it was 0.007 N/mm. Further, the total contact area of a glass substrate A and the support structure A was 21,250 mm ² .

Further, in the sealing structure 1, the peel strength and the total contact area between the sealing portion and a glass substrate B, the peel strength between the bonding portion and a glass substrate B, and the total contact surface The peeling strength and the total contact area between the glass substrate B and the support structure B and the peel strength and total contact area between the sealing portion and a glass substrate A, and the adhesion between the bonding portion and a glass substrate A, respectively. The peel strength and the total contact area between the glass substrate A and the support structure A are the same as the peel strength and the total contact area.

From the above numerical values, the values of {(X1 × Y1) + (Z1 × W1)} / (A1 × B1) and {(X2 × Y2) + (Z2 × W2)} / (A2 × B2) are 1.01.

After the laminated body B side of the obtained sealed structure 1 was vacuum-adsorbed to the platen, a stainless steel blade having a thickness of 0.1 mm was inserted into the interface between the glass substrate A and the cured polyoxynated resin layer at the corner portion of the sealing structure 1. The support structure A is separated from the self-sealing structure 1.

Then, the support structure B is separated from the seal structure separated by the support structure A in accordance with the same procedure, thereby obtaining a member for a liquid crystal display panel.

When the support structure A and the support structure B were separated, slight peeling was observed between the sealing portion and the glass substrate A or the glass substrate B, but there was no problem in practical use, and the glass substrate A and the glass substrate B were not produced. The destruction.

<Example 2>

The same procedure as in the first embodiment was carried out except that the total contact area of the sealing portion and the glass substrate A (and the other glass substrate B) was 1200 mm ² and the width of the sealing portion was changed to 0.1 mm. A member for a liquid crystal display panel is manufactured.

In the second embodiment, the value of {(X1 × Y1) + (Z1 × W1)} / (A1 × B1) and {(X2 × Y2) + (Z2 × W2)} / (A2 × B2) is 1.19.

Further, when the support structure A and the support structure B were separated, although slight peeling was observed between the sealing portion and the glass substrate A or B, there was no problem in practical use, and the glass substrates A and B were not produced. damage.

<Example 3>

The same procedure as in the first embodiment was carried out except that the width of the adhesive portion was changed to 0.1 mm so that the total contact area between the adhesive portion and the glass substrate A (and the other glass substrate B) was 510 mm ² . A member for a liquid crystal display panel is manufactured.

In the third embodiment, the value of {(X1 × Y1) + (Z1 × W1)} / (A1 × B1) and {(X2 × Y2) + (Z2 × W2)} / (A2 × B2) is 1.09.

Further, when the support structure A and the support structure B were separated, although slight peeling was observed between the sealing portion and the glass substrate A or B, there was no problem in practical use, and the glass substrates A and B were not produced. damage.

<Example 4>

The width of the sealing portion is changed to 0.5 mm so that the total contact area of the sealing portion with a glass substrate A (and the other glass substrate B) is 6000 mm ² so that the bonding portion and a glass substrate A (and A member for a liquid crystal display panel was produced in the same manner as in Example 1 except that the total contact area of the glass substrate B) was 2550 mm ² and the width of the adhesive portion was changed to 0.5 mm.

In the fourth embodiment, the value of {(X1 × Y1) + (Z1 × W1)} / (A1 × B1) and {(X2 × Y2) + (Z2 × W2)} / (A2 × B2) is 6.32.

Further, when the support structure A and the support structure B were separated, peeling of the sealing portion from the glass substrate A or B or destruction of the glass substrates A and B did not occur.

<Example 5>

The liquid crystal was produced in the same manner as in Example 1 except that the type of the resin liquid for sealing was changed, and the peeling strength between the sealing portion and the glass substrate A (and the other glass substrate B) was changed to 0.17 N/mm. Display panel components.

In the fifth embodiment, the value of {(X1 × Y1) + (Z1 × W1)} / (A1 × B1) and {(X2 × Y2) + (Z2 × W2)} / (A2 × B2) is 1.40.

Further, when the support structure A and the support structure B were separated, peeling of the sealing portion from the glass substrate A or B or destruction of the glass substrates A and B did not occur.

<Example 6>

The change is followed by the type of resin liquid, and the bonding portion is combined with a glass substrate A (and another glass) A member for a liquid crystal display panel was produced in the same manner as in Example 1 except that the peeling strength between the glass substrates B) was changed to 0.17 N/mm.

In the sixth embodiment, the value of {(X1 × Y1) + (Z1 × W1)} / (A1 × B1) and {(X2 × Y2) + (Z2 × W2)} / (A2 × B2) is 1.18.

Further, when the support structure A and the support structure B were separated, although slight peeling was observed between the sealing portion and the glass substrate A or B, there was no problem in practical use, and the glass substrates A and B were not produced. damage.

<Comparative Example 1>

The same procedure as in the first embodiment was carried out except that the width of the sealing portion was changed to 0.05 mm so that the total contact area of the sealing portion with a glass substrate A (and the other glass substrate B) was 600 mm ² . A member for a liquid crystal display panel is manufactured.

In Comparative Example 1, the value of {(X1 × Y1) + (Z1 × W1)} / (A1 × B1) and {(X2 × Y2) + (Z2 × W2)} / (A2 × B2) was 0.75.

Further, when the support structure A and the support structure B are separated, peeling of the sealing portion from the glass substrate A or B or destruction of the glass substrate A or B occurs.

<Comparative Example 2>

The same procedure as in the first embodiment was carried out except that the width of the adhesive portion was changed to 0.05 mm so that the total contact area between the adhesive portion and the glass substrate A (and the other glass substrate B) was 255 mm ² . A member for a liquid crystal display panel is manufactured.

In Comparative Example 2, the value of {(X1 × Y1) + (Z1 × W1)} / (A1 × B1) and {(X2 × Y2) + (Z2 × W2)} / (A2 × B2) was 0.90.

Further, when the support structure A and the support structure B are separated, peeling of the sealing portion from the glass substrate A or B or destruction of the glass substrate A or B occurs.

<Comparative Example 3>

The type of the resin liquid for sealing was changed, and the peeling strength between the sealing portion and one glass substrate A (and the other glass substrate B) was changed to 0.08 N/mm, and the same was carried out. The member for the liquid crystal display panel was manufactured in the same procedure as in Example 1.

In Comparative Example 3, the value of {(X1 × Y1) + (Z1 × W1)} / (A1 × B1) and {(X2 × Y2) + (Z2 × W2)} / (A2 × B2) was 0.82.

Further, when the support structure A and the support structure B are separated, peeling of the sealing portion from the glass substrate A or B or destruction of the glass substrate A or B occurs.

<Comparative Example 4>

In the same manner as in Example 1, except that the peeling strength between the adhesive portion and the glass substrate A (and the other glass substrate B) was changed to 0.08 N/mm by the type of the resin liquid, the liquid crystal was produced in the same manner as in Example 1. Display panel components.

In Comparative Example 4, the value of {(X1 × Y1) + (Z1 × W1)} / (A1 × B1) and {(X2 × Y2) + (Z2 × W2)} / (A2 × B2) was 0.93.

Further, when the support structure A and the support structure B are separated, peeling of the sealing portion from the glass substrate A or B or destruction of the glass substrate A or B occurs.

The results of the above examples and comparative examples are summarized in Table 1.

In Table 1, the column of "peel strength X" indicates the peel strength (N/mm) between the sealing portion and the glass substrate A (or the glass substrate B), and the column "total contact area Y" indicates the sealing portion and the glass substrate A. (or glass substrate B) total contact area (mm ² ), and the "peel strength Z" column indicates the peel strength (N/mm) between the rear portion and the glass substrate A (or the glass substrate B), "total contact area The column "W" indicates the total contact area (mm ² ) between the sealing portion and the glass substrate A (or the glass substrate B), and the column of "peel strength A" indicates the glass substrate A (or the glass substrate B) and the support structure A (or The peel strength (N/mm) between the support structures B), and the column of "total contact area B" indicates the total contact area of the glass substrate A (or the glass substrate B) and the support structure A (or the support structure B). (mm ² ), the column of "Formula (1)" indicates the result of "(X1 × Y1) + (Z1 × W1)} / (A1 × B1)", and the column of "Formula (2)" indicates "(X2 ×) Y2)+(Z2×W2)}/(A2×B2)".

Moreover, the peeling result in Table 1 was obtained based on the following criteria. Practically, it must be "○" or "◎".

"◎": no peeling of the sealing portion from the glass substrate A or B, or destruction of the glass substrate A or B

"○": slight peeling was observed between the sealing portion and the glass substrate A or B, but there was no problem in practical use.

"X" causes peeling of the sealing portion with the glass substrate A or B or destruction of the glass substrate A or B.

In the sealing structure which satisfies the relationship of the formula (1) and the formula (2), it is confirmed that the peeling between the sealing portion and the glass substrate or the breakage of the glass substrate is suppressed. In particular, it has been confirmed that when the values of the formulae (1) and (2) are 1.40 or more, the peeling is further suppressed.

On the other hand, in Comparative Examples 1 to 4 which did not satisfy the relationship of the formula (1) or the formula (2), peeling between the sealing portion and the glass substrate or breakage of the glass substrate occurred.

Although an embodiment of the present invention has been described above, the present invention is not limited to the above embodiment. Various modifications and substitutions can be made to the above embodiments without departing from the scope of the invention.

The present application is based on Japanese Patent Application No. 2012-224448, filed on Jan.

10‧‧‧ Sealing structure

11‧‧‧1st layered body

13‧‧‧ Sealing Department

Claims (11)

A sealing structure for manufacturing a member for a liquid crystal display panel, comprising: a first laminate having a first glass substrate having a thickness of 0.3 mm or less and being detachably attached to the first glass substrate a first support structure; the second laminate having a second glass substrate having a thickness of 0.3 mm or less and a second support structure detachably bonded to the second glass substrate; and a sealing portion The first layered body and the second layered body are provided so as to surround the formation region of the liquid crystal display panel; and the second portion is connected to the first layered body and the second layered body in an arbitrary configuration; The first glass substrate and the second glass substrate face each other and satisfy the following relational expressions (1) and (2): Formula (1) {(X1 × Y1) + (Z1 × W1)} / (A1 × B1 >1 (2) {(X2 × Y2) + (Z2 × W2)} / (A2 × B2) > 1 (In the formula (1), X1 represents peeling between the sealing portion and the first glass substrate Strength (N/mm), Y1 represents the total contact area (mm ² ) between the sealing portion and the first glass substrate, and Z1 represents the peel strength (N/mm) between the bonding portion and the first glass substrate. W1 represents the total contact area (mm ² ) between the above-mentioned bonding portion and the first glass substrate, and A1 represents the peeling strength (N/mm) between the first glass substrate and the first supporting structure, and B1 represents the above-mentioned 1) a total contact area (mm ² ) between the glass substrate and the first support structure; and in the formula (2), X2 represents a peel strength (N/mm) between the seal portion and the second glass substrate, and Y2 represents the above. a total contact area (mm ² ) between the sealing portion and the second glass substrate, Z2 represents a peeling strength (N/mm) between the bonding portion and the second glass substrate, and W2 represents the bonding portion and the second glass substrate The total contact area (mm ² ), A2 indicates the peel strength (N/mm) between the second glass substrate and the second support structure, and B2 indicates the total of the second glass substrate and the second support structure. The contact area (mm ² ); further, in the case where the above-mentioned succeeding portion is not present, it is assumed that (Z1 × W1) = 0 and (Z2 × W2) = 0). A sealing structure according to claim 1, which comprises a plurality of said sealing portions. The sealing structure according to claim 2, comprising the above-mentioned splicing portion, wherein the splicing portion is linearly arranged along the sealing portion. A sealing structure according to claim 2, comprising the above-mentioned splicing portion, wherein the splicing portion is provided to surround the entirety of the plurality of sealing portions. The sealing structure according to claim 2, comprising the above-mentioned splicing portion, wherein the splicing portion is provided to surround each of the plurality of sealing portions. The sealing structure according to any one of claims 1 to 5, wherein the first glass substrate and the second glass substrate have a size of 730 mm in length × 920 mm in width. The sealing structure according to any one of claims 1 to 6, wherein the first glass substrate and/or the second glass substrate are made of alkali-free glass. The sealing structure according to claim 7, wherein the glass plate is composed of an alkali-free glass containing a composition based on an oxide percentage: SiO ₂ : 50 to 66% Al ₂ O ₃ : 10.5 to 24% B ₂ O ₃ : 0~12% MgO: 0~8% CaO: 0~14.5% SrO: 0~24% BaO: 0~13.5% MgO+CaO+SrO+BaO: 9~29.5% ZnO: 0~5%. The sealing structure according to claim 7, wherein the glass plate is composed of an alkali-free glass containing a composition based on an oxide-based mass percentage: SiO ₂ : 58 to 66% Al ₂ O ₃ : 15 to 22% B ₂ O ₃ : 5~12% MgO: 0~8% CaO: 0~9% SrO: 3~12.5% BaO: 0~2% MgO+CaO+SrO+BaO: 9~18% ZnO: 0~2%. A method for producing a member for a liquid crystal display panel, comprising a peeling step of peeling off the first support structure and the second support structure from the seal structure according to any one of claims 1 to 9. The method for producing a member for a liquid crystal display panel according to claim 10, wherein in the peeling step, the peeling of the first support structure and the second support structure from the seal structure is from one end of the seal structure Go slowly.