JP5297097B2 - Counter substrate for display panel, display device, and method of manufacturing display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To stabilize an amount for drawing a sealing agent and improve yield and reliability. <P>SOLUTION: A counter substrate 10 for a display panel is provided with: a first substrate and a second substrate which are bonded together at a prescribed interval; a photo-curable sealing material 12 which is provided at a substrate periphery part between the first substrate and the second substrate; a light-shielding layer 13 which is formed, with a prescribed width, from the substrate end of the first substrate in the area in which the sealing material 12 is provided; and an aperture part 14 which is formed by removing the light-shielding layer 13 toward the center of the substrate from a position apart by a prescribed distance from the substrate end. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a display panel counter substrate, a display device, and a method for manufacturing a display device, and more particularly to a display panel counter substrate, a display device, and a method for manufacturing the display device in which a peripheral edge of the substrate is sealed with a resin.

  In recent years, a technique for polishing the surface of a glass substrate has been used to reduce the thickness of a liquid crystal panel. Usually, the glass substrate is polished by chemical polishing or mechanical polishing. In these polishing methods, liquid is used, and defects occur when entering between the substrates. In order to prevent this, for example, Patent Document 1 and Patent Document 2 propose a technique of sealing the peripheral edge of the substrate with an ultraviolet curable resin. Many liquid crystal panels are manufactured using a method of sealing the injection port after injecting liquid crystal from the injection port. Also in this case, the injection port at the peripheral edge of the substrate is similarly sealed with an ultraviolet curable resin.

  However, when the method of applying the ultraviolet curable resin of Patent Document 1 or Patent Document 2 to the peripheral edge of the substrate is used, the time from application of the ultraviolet curable resin to curing is different at the application start position and the application end position. The amount of UV curable resin drawn is different. In order to prevent insufficient pulling of the ultraviolet curable resin, a certain amount of time is required after the application of the ultraviolet curable resin. If a drawing time is secured after the application is completed so that the drawing is sufficiently performed at the application end position, excessive drawing may occur at the application start position.

  In order to solve such a problem, there is a method of selecting a high-viscosity type as an ultraviolet curable resin to be used in order to balance the drawing start position and the coating end position. However, in the case of a high-viscosity type ultraviolet curable resin, the pull-in time becomes long and the processing tact time becomes long. In addition, in the case of high-viscosity UV curable resin, the effect of the difference in the amount of pull-in at the coating start position and the coating end position is small, but the pull-in speed itself fluctuates due to the influence of the cell gap and temperature. In addition, it becomes very difficult to manage the pull-in time when a suitable amount of pull-in is completed.

  As described above, when a low-viscosity type ultraviolet curable resin is used, the amount of pull-in in the substrate varies. In addition, when a high-viscosity ultraviolet curable resin is used, the amount of pull-in between the substrates varies. For this reason, when the pull-in amount is insufficient, infiltration of the liquid used at the time of polishing occurs. In the case of excessive pulling, the resin wraps around to the cutting position and a cutting failure occurs. Ultimately, the yield decreases in either case.

  Also, when using a method in which the injection port is sealed with an ultraviolet curable resin, the ultraviolet curable resin is applied to a large number of cells, and after a certain amount of drawing time, curing is performed by sequentially applying ultraviolet rays. In this case, since it is difficult to manage the time from application to curing for each of a large number of cells, the pull-in amount similarly varies. When sealing the inlet, liquid crystal leakage occurs if the pull-in amount is insufficient. In the case of excessive drawing, the impurities of the resin diffuse into the liquid crystal and the liquid crystal changes in quality, resulting in a display defect. In this case, yield and reliability are lowered.

In order to prevent such a failure to draw in the ultraviolet curable resin that seals the injection port, Patent Document 3 describes a method of controlling the resin drawing position by providing a partial blocking material inside the injection port. Has been. However, such a blocking member has a practical problem such that it also hinders liquid crystal injection.
JP 2001-13489 A JP 2007-86670 A JP 2003-255368 A

  As described above, in the method of sealing the periphery of the substrate used in the conventional method for manufacturing a liquid crystal panel with an ultraviolet curable resin, a method for manufacturing a liquid crystal panel with a high yield or a liquid crystal panel with high reliability is manufactured. There was no suitable way to do it.

The counter substrate for a display panel according to one embodiment of the present invention includes at least one of a first substrate and a second substrate bonded to each other with a predetermined interval, and a substrate peripheral portion between the first substrate and the second substrate. A photo-curing sealing material provided in a portion, a first light-shielding layer formed with a predetermined width from a substrate end of the first substrate in a region where the sealing material is provided, and from the substrate end And a first opening from which the first light shielding layer is removed toward a center of the substrate from a position separated by a predetermined distance.
The first substrate is a switching device substrate mother substrate, the second substrate is a color filter substrate mother substrate, and the sealing material surrounds the entire periphery of the substrate peripheral portion. is there.
The counter substrate for a display panel according to one embodiment of the present invention includes at least one of a first substrate and a second substrate bonded to each other with a predetermined interval, and a substrate peripheral portion between the first substrate and the second substrate. A photo-curing sealing material provided in a portion, a first light-shielding layer formed with a predetermined width from a substrate end of the first substrate in a region where the sealing material is provided, and from the substrate end And a first opening from which the first light shielding layer is removed toward a center of the substrate from a position separated by a predetermined distance.
The first substrate and the second substrate are bonded to each other by a sealing material formed along the edge of each substrate having an open portion in a part corresponding to a region where the light shielding layer is formed. The stop material is provided in the region where the open portion is formed.
The first substrate is a mother substrate for a switching element substrate, and the second substrate is a mother substrate for a color filter substrate, and the entire periphery of the substrate peripheral portion is surrounded by the sealing material and the sealing material. It is what.

In the method for manufacturing a display device according to an aspect of the present invention, the first light-shielding layer having the first opening formed toward the center of the substrate from a position away from the substrate end of the first substrate by the predetermined distance, Forming a predetermined width from the substrate edge of the first substrate, bonding the first substrate and the second substrate with a predetermined space therebetween, and substrate peripheral edges of the first substrate and the second substrate A photo-curable sealing material is applied to at least a part of the portion, and the sealing material drawn between the first substrate and the second substrate is irradiated with ultraviolet rays through the first opening. And a step of sealing the peripheral edge of the substrate.
The first substrate is a switching element substrate mother substrate, and the second substrate is a color filter substrate mother substrate, and the sealing material is applied to the entire periphery of the substrate peripheral portion.
In the method for manufacturing a display device according to an aspect of the present invention, the first light-shielding layer having the first opening formed toward the center of the substrate from a position away from the substrate end of the first substrate by the predetermined distance, Forming a predetermined width from the substrate edge of the first substrate, bonding the first substrate and the second substrate with a predetermined space therebetween, and substrate peripheral edges of the first substrate and the second substrate A photo-curable sealing material is applied to at least a part of the portion, and the sealing material drawn between the first substrate and the second substrate is irradiated with ultraviolet rays through the first opening. And a step of sealing the peripheral edge of the substrate.
The first substrate and the second substrate are bonded to each other by a sealing material that is formed along each substrate edge and has an open portion in a part corresponding to the region where the light shielding layer is formed. Is provided in the region where the open portion is formed.
The first substrate is a mother substrate for a switching element substrate, and the second substrate is a mother substrate for a color filter substrate, and the entire periphery of the substrate peripheral portion is surrounded by the sealing material and the sealing material. ing.

  ADVANTAGE OF THE INVENTION According to this invention, the drawing amount of a sealing material can be stabilized and the manufacturing method of the counter substrate for display panels which can improve a yield and reliability, a display apparatus, and a display apparatus can be provided. .

  Embodiments to which the present invention can be applied will be described below. The following description is to describe the embodiment of the present invention, and the present invention is not limited to the following embodiment. For clarity of explanation, the following description and drawings are omitted and simplified as appropriate.

  Embodiments to which the present invention can be applied will be described below. The following description is to describe the embodiment of the present invention, and the present invention is not limited to the following embodiment. For clarity of explanation, the following description and drawings are omitted and simplified as appropriate.

Embodiment 1 FIG.
A counter substrate for a display panel according to Embodiment 1 of the present invention will be described with reference to FIG. Here, the counter substrate 10 for a liquid crystal panel for manufacturing a liquid crystal display device will be described. FIG. 1 is a diagram showing a configuration of a counter substrate 10 for a liquid crystal panel according to the present embodiment. The counter substrate 10 for liquid crystal panel is formed in the middle of manufacturing the liquid crystal panel 11. In the present embodiment, a large number of liquid crystal panels 11 can be taken out from a glass substrate which is a pair of bonded transparent substrates. In the first embodiment, an example in which the present invention is applied to the sealing process of the peripheral edge of the substrate when the glass substrate surface is polished and thinned will be described.

  As shown in FIG. 1, a sealing material (not shown) is formed on the counter substrate 10 for a liquid crystal panel so as to correspond to the formation regions of the plurality of liquid crystal panels 11. The sealing material is formed for each liquid crystal panel 11 so as to surround a region where the liquid crystal is filled. A pair of glass substrates are bonded together by this sealing material.

  A light shielding layer 13 having a predetermined width from the substrate edge is formed on the peripheral edge of one of the substrates 10 for the liquid crystal panel. The light shielding layer 13 is provided with an opening 14 from which the light shielding layer 13 is removed with a predetermined width from a position away from the substrate edge by a predetermined distance toward the center of the substrate. That is, the light shielding layer 13 is provided with a slit having a predetermined width formed along the peripheral edge of the substrate. That is, the light shielding layer 13 includes a first light shielding layer 13 a formed with a predetermined width from the substrate end and a second light shielding layer 13 b formed inside the opening 14. Note that in this embodiment mode, the light-shielding layer is not formed on the peripheral edge portion of the other substrate bonded to the substrate on which the light-shielding layer is formed, so that light or the like can be transmitted.

  As the light shielding layer 13, a material used for a black matrix formed on a color filter substrate of a normal liquid crystal panel, such as a resin in which a metal film or a black pigment is dispersed, can be used. When the light shielding layer 13 is provided on the color filter substrate side, the black matrix is diverted to the light shielding layer 13 by, for example, forming a black matrix up to the substrate edge and forming a slit along the substrate edge to provide an opening 14. Or can be formed simultaneously. Moreover, when providing in the switching element board | substrate side, you may form simultaneously using the same material as the wiring material etc. which are formed in a switching element board | substrate. As described above, since the light shielding layer and the wiring forming process in the normal liquid crystal panel can be formed at the same time, the light shielding layer 13 can be formed without increasing the number of manufacturing steps.

  Next, a sealing process for the peripheral edge of the substrate when the glass substrate surface is polished and thinned against the liquid crystal panel counter substrate will be described with reference to FIG. FIG. 2 is a diagram for explaining a sealing process of the peripheral edge portion of the counter substrate 10 for a liquid crystal panel according to the present embodiment. In the sealing process of the peripheral edge of the substrate, the sealing material 12 made of an ultraviolet curable resin is applied to the peripheral edge of the substrate, that is, the side surfaces of the paired substrates. The applied sealing material 12 is drawn into the gap between the pair of glass substrates bonded together. By irradiating the sealing material 12 drawn into the gap with ultraviolet rays, the sealing material 12 is cured and the periphery of the substrate is sealed.

  The counter substrate 10 for liquid crystal panel is conveyed in a state of being held by a holding mechanism such as a stage (not shown). As shown in FIG. 2, a coating nozzle 20, a temporary curing ultraviolet irradiation device 21, and a main curing ultraviolet irradiation device 22 are arranged around the liquid crystal panel counter substrate 10. The application nozzle 20 applies the sealing material 12 made of an ultraviolet curable resin from the upstream side with respect to the substrate transport direction. The application nozzle 20 is disposed at a position where the resin is applied to the end face of the counter substrate 10 for the liquid crystal panel. The temporary curing ultraviolet irradiation device 21 irradiates the sealing material 12 with ultraviolet rays to temporarily cure. The temporary curing ultraviolet irradiation device 21 is disposed at a position where ultraviolet light can be irradiated along the opening 14 on the substrate side where the light shielding layer 13 of the counter substrate 10 for the liquid crystal panel is formed.

  The main curing ultraviolet irradiation device 22 performs main curing by irradiating the sealing material 12 with ultraviolet rays. The main curing ultraviolet irradiation device 22 is disposed at a position where the substrate peripheral portion of the substrate on the side where the light shielding layer 13 of the counter substrate 10 for liquid crystal panel is not formed can be irradiated with ultraviolet rays. In FIG. 2, the configuration in which the liquid crystal panel counter substrate 10 is transported and the respective processes are sequentially performed is used, but the present invention is not limited to this. With the liquid crystal panel counter substrate 10 fixed, the coating nozzle 20, the pre-curing ultraviolet irradiation device 21, and the main curing ultraviolet irradiation device 22 may be scanned to sequentially perform the respective processes.

  Next, with reference to FIG. 3, the process of applying, drawing, temporary curing, and main curing of the sealing material 12 will be described. FIG. 3 is a cross-sectional view illustrating a configuration of a part of the peripheral edge of the counter substrate 10 for a liquid crystal panel for explaining each process. FIG. 3A is a diagram for explaining a coating process of the sealing material 12, FIG. 3B is a diagram for explaining a temporary curing process of the sealing material 12, and FIG. 3C is a main curing process. FIG.

  As shown in FIG. 3A, the sealing material 12 is applied to the end portion of the counter substrate 10 for the liquid crystal panel from the coating nozzle 20 while irradiating the opening portion 14 with ultraviolet rays for temporary curing. The applied sealing material 12 is drawn into the gap between the substrates by capillary action as shown in FIG. In a region that is shielded by the light shielding layer 13 provided on one substrate of the counter substrate 10 for the liquid crystal panel and is not irradiated with ultraviolet rays for pre-curing, the sealing material 12 drawn into the gap between the substrates is almost the same as when applied. The viscosity does not change and the retraction proceeds without hindrance.

  When the encapsulating material 12 is further drawn and reaches the opening 14 provided in one of the substrates 10 for the liquid crystal panel, the encapsulating material 12 is irradiated with ultraviolet rays for temporary curing. In the present embodiment, the condition of the ultraviolet light for temporary curing is such that the viscosity of the irradiated sealing material 12 is increased at least several times so that the pull-in speed is sufficiently slow. As described above, the sealing material 12 that has reached the opening 14 is irradiated with ultraviolet rays to increase its viscosity, and the progress of drawing inward from the opening 14 almost stops.

  Then, as shown in FIG. 3C, the sealing material 12 into which the ultraviolet ray for main curing is drawn is irradiated from the substrate side where the light shielding layer 13 is not formed. As a result, the resin that has not been irradiated with the pre-curing ultraviolet ray is shielded, the resin whose viscosity has been increased by the pre-curing ultraviolet irradiation but has not been completely cured, and the like are completely cured. As for the pre-curing ultraviolet irradiation device 21 and the main curing ultraviolet irradiation device 22, it is desirable to use a material having a higher intensity of irradiation for the main curing, but the conditions such as the processing time using the same material are preferable. May be changed.

  As described above, by applying the sealing material 12 to the curing process over the entire circumference of the counter substrate 10 for the liquid crystal panel, as shown in FIG. 4, at an appropriate position inside the opening 14. The counter substrate 10 for a liquid crystal panel in which the pull-in amount is controlled so that the tip of the sealing material 12 stops can be obtained. The pulling amount of the sealing material 12 can be arbitrarily controlled by determining the arrangement of the openings 14 so that the width of the light shielding layer 13a formed from the peripheral edge of the substrate becomes a predetermined width. An appropriate pull-in amount can be selected depending on the resistance of the sealing material 12 to the processing liquid during the thinning process of the glass substrate.

  In addition, although the example which sealed the board | substrate peripheral part of the opposing board | substrate 10 for liquid crystal panels only with the sealing material 12 was demonstrated here, it is not limited to this. For example, a configuration may be adopted in which a seal that is partially opened is formed in advance on the peripheral edge of the counter substrate 10 for the liquid crystal panel, and the peripheral edge of the substrate is sealed with both the seal and the sealing material 12. . In this case, the formation of the light shielding layer 13 and the opening 14 and the formation of the sealing material 12 may be performed only on the open portion of the seal, and only the open portion of the seal may be sealed.

  In the present embodiment, a case has been described in which a slit is formed as the opening 14 from which the light shielding layer 13 has been removed with a position at a certain distance from the substrate edge as a boundary. However, if the opening 14 from which the light shielding layer 13 is removed is provided at a position at a certain distance from the substrate edge, the ultraviolet curable resin is drawn and provided by a predetermined distance where the light shielding layer 13 is provided. The sealing material 12 is irradiated with ultraviolet rays from the opening 14. Therefore, the opening 14 can be stably pulled into a predetermined distance even if it is not a slit. However, by using a slit having a predetermined width as the opening 14, the light shielding layer 13 b is provided on the inner side of the substrate from the opening 14, and the opening 14 capable of controlling the pull-in position is secured at the same time. It is possible to prevent problems caused by unnecessarily irradiating the region with ultraviolet rays.

  In the present embodiment, the light shielding layer 13 is formed inside the bonded substrate. However, the light shielding layer 13 and the opening 14 cannot be disposed inside the counter substrate 10 for the liquid crystal panel (opposing surface side). In this case, a similar process can be performed by preparing a mask using a glass substrate with a light shielding layer 13 or a metal plate with slits and attaching it to the outside of the substrate only during this process.

  In this embodiment, the temporary curing ultraviolet irradiation device 21 and the main curing ultraviolet irradiation device 22 that can locally irradiate ultraviolet rays are used to sequentially scan the sealing material 12 after application. Then, temporary curing and main curing treatment were performed. However, since the region irradiated with ultraviolet rays at the time of temporary curing is determined by the light shielding layer 13 and the opening 14 formed in the counter substrate 10 for the liquid crystal panel, it is not particularly limited to such a mode.

  For example, as shown in FIG. 5, the process of drawing from the application of the sealing material 12 may be performed while irradiating the entire surface of the counter substrate 10 for liquid crystal panel with ultraviolet rays for temporary curing. Also, in the main curing, when the encapsulating material 12 is drawn into the opening 14 over the entire circumference of the substrate by temporary curing, ultraviolet light for main curing is irradiated from the substrate side without the light shielding layer 13 to the entire surface of the substrate. May be. In the case where irradiation of ultraviolet rays onto the entire surface of the substrate adversely affects elements, organic films, color filters, and the like in the display area, as shown in FIG. 5, the color material 15, black matrix 16, sealant A mask 23 covering the portion of the liquid crystal panel 10 on which 17 or the like is formed may be disposed so that only the substrate peripheral portion of the liquid crystal panel counter substrate 10 is irradiated with ultraviolet rays.

  Further, in the present embodiment, since the counter substrate 10 for a liquid crystal panel having a stable pull-in amount can be obtained even when the pull-in speed is high, the low-viscosity type UV curing with a high pull-in speed as the sealing material 12 is achieved. Resin can also be used. The use of a low-viscosity type ultraviolet curable resin is more preferable because the time required for pull-in can be shortened and the processing tact can be shortened.

Embodiment 2. FIG.
The configuration of the counter substrate for a liquid crystal panel according to Embodiment 2 of the present invention will be described with reference to FIG. FIG. 6 is a diagram showing a configuration of a liquid crystal cell 30 which is a counter substrate for a liquid crystal panel according to the present embodiment. In the present embodiment, a case will be described in which the method of the present invention is used for the sealing step of the inlet portion of the liquid crystal cell 30 into which liquid crystal is injected from the inlet. In FIG. 6, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted as appropriate.

  The liquid crystal cell 30 includes a color filter substrate 31, a switching element substrate 32, a sealing material 33, a liquid crystal 34, and the like. The color filter substrate 31 and the switching element substrate 32 are bonded together by a sealing material 33 in which an injection port 35 is formed. A terminal 36 and the like are disposed at the end of the switching element substrate 32 where the injection port 35 is not formed. A liquid crystal 34 is injected into a region formed by the color filter substrate 31, the switching element substrate 32, and the sealing material 33.

  On the side where the injection port 35 of the color filter substrate 31, which is one substrate constituting the liquid crystal cell 30, is formed, a light shielding layer 13 having a certain width from the substrate end is formed. The light shielding layer 13 is formed with an opening 14 having a certain width removed, with a position at a certain distance from the substrate edge as a boundary. That is, the light shielding layer 13 is formed with a slit having a certain width substantially parallel to the side where the injection port 35 of the color filter substrate 31 is formed. That is, the light shielding layer 13 includes a first light shielding layer 13 a formed with a predetermined width from the substrate end and a second light shielding layer 13 b formed inside the opening 14. In the present embodiment, the second light shielding layer 13 b is integrally formed of a black matrix of a color filter formed on the color filter substrate 31. Here, the light shielding layer 13 and the opening 14 having a certain width are formed only in a portion corresponding to one side where the injection port 35 is disposed. In the second embodiment, the switching element substrate 32 is not formed with a light shielding layer and is in a state where light or the like can be transmitted.

  Subsequently, the sealing process of the injection port 35 performed for the liquid crystal cell 30 will be described. As shown in FIG. 6, in the sealing process of the injection port 35, the sealing material 12 made of an ultraviolet curable resin is applied to the injection port 35 arranged on the peripheral edge of the substrate of the liquid crystal cell 30. Then, the sealing material 12 is drawn into the gap between the color filter substrate 31 and the switching element substrate 32 that are bonded together. Thereafter, the sealing material 12 drawn into the gap is cured by being irradiated with ultraviolet rays, and the injection port 35 is sealed.

  FIG. 7 is an enlarged view of the vicinity of the injection port 35 for explaining the sealing of the injection port 35. FIG. 7A shows the situation when the sealing material 12 is applied, and FIG. 7B shows a state where the main curing is completed. Since the process of applying, drawing, provisional curing, and main curing of the sealing material 12 is substantially the same as that of the first embodiment, it will be briefly described with reference to the cross-sectional view of FIG.

  As in the first embodiment, as shown in FIG. 3A, the sealing material 12 is applied to the end of the substrate from the application nozzle 20 while irradiating the opening 14 with ultraviolet rays for temporary curing. As shown in FIG. 3B, the applied sealing material 12 is drawn between a pair of substrates. Then, the sealing material 12 that has reached the opening 14 substantially stops its progress upon being irradiated with ultraviolet rays. In the present embodiment, unlike the first embodiment, the portion to be sealed with resin is a local process of only the injection port 35, and thus the scanning process is performed as in the first embodiment. There is no need.

  Thereafter, as shown in FIG. 3C, the resin encapsulated with ultraviolet light for main curing is irradiated from the switching element substrate 32 side where the light shielding layer 13 is not formed, and the applied sealing material 12 is completely cured. To do. In this way, as shown in FIG. 7B, the pull-in amount of the sealing material 12 for sealing the inlet 35 is controlled to an appropriate position inside the opening 14 provided in the inlet 35. Cell 30 can be obtained. Thereby, the liquid crystal cell 30 with a stable pull-in amount can be manufactured without hindering the injection of the liquid crystal 34. For this reason, it is possible to prevent liquid crystal leakage when the pulling is insufficient, deterioration of the liquid crystal when the pulling is excessive, and the yield and reliability can be improved.

Embodiment 3 FIG.
Several modifications of the counter substrate for liquid crystal panels of the first and second embodiments will be described with reference to FIGS. 8 to 11 are diagrams for explaining the configuration of the counter substrate for liquid crystal panel according to the third embodiment and the manufacturing method thereof. 8 to 11, the same components as those in the first embodiment and the second embodiment are denoted by the same reference numerals, and description thereof will be omitted as appropriate.

  In the first modification shown in FIG. 8, a plurality of openings 14 are formed in the light shielding layer 13 formed on the peripheral edge of the substrate. In this example, two openings 14 are formed. The first opening 14a is formed so as to extend substantially parallel to the substrate end. The second opening 14b is formed on the substrate center side with respect to the first opening 14a so as to extend substantially parallel to the first opening 14a. That is, the light shielding layer 13 is provided with two slits formed substantially parallel to the substrate end. In this example, two openings 14 are provided. However, a plurality of openings 14 may be provided for each of temporary curing and main curing.

  The first opening 14a formed on the substrate end side is provided for irradiating the ultraviolet light for temporary curing. The second opening 14b provided on the center side of the substrate with respect to the first opening 14a is provided for irradiating ultraviolet rays for main curing. Further, the second opening 14b for main curing is formed thicker than the first opening 14a for temporary curing. The light shielding layer 13 in which the openings 14a and 14b are formed is formed on one first substrate 10a of a pair of substrates bonded to face each other.

  Unlike Embodiment 1 and Embodiment 2, a light shielding layer 18 is formed on the peripheral edge of the other second substrate 10b. The light shielding layer 18 is formed with a predetermined width over the peripheral edge of the substrate, and the opening 14 is not provided. For this reason, the sealing material 12 cannot be irradiated with ultraviolet rays from the second substrate 10b side on which the light shielding layer 18 is formed. Therefore, in this example, ultraviolet rays are irradiated from the first substrate 10a side where the light shielding layer 13 is formed.

  A temporary curing ultraviolet irradiation device 21 is arranged at a position corresponding to the first opening 14a. The pre-curing ultraviolet ray is irradiated from the pre-curing ultraviolet irradiation device 21 through the first opening 14a. Further, a main curing ultraviolet irradiation device 22 is arranged at a position corresponding to the second opening 14b. The main curing ultraviolet ray is irradiated from the main curing ultraviolet ray irradiation device 22 through the second opening 14b. The irradiation intensity of the main curing ultraviolet irradiation device 22 is higher than the irradiation intensity of the temporary curing ultraviolet irradiation device 21.

  In the counter substrate for a liquid crystal panel formed as described above, the sealing material 12 drawn into the gap between the substrates is temporarily cured in the first opening 14a, as in the first and second embodiments. When the ultraviolet rays are irradiated, the viscosity becomes high, and the progress of the drawing from the first opening 14a to the inner side becomes slow. Here, the width of the first opening 14a for temporary curing is relatively narrow, and the irradiation intensity of the ultraviolet curing device 21 for temporary curing is relatively weak. For this reason, although the progress of the drawing of the sealing material 12 is delayed, the progress continues and reaches the second opening 14b for main curing.

  The second opening portion 14b has a relatively wide slit width, and the irradiation intensity of the main curing ultraviolet irradiation device 22 is relatively strong. For this reason, the sealing material 12 is completely cured at the position of the second opening 14b, and the progress stops. As described above, in the modification shown in FIG. 8, the light shielding layer is formed on both of the pair of substrates bonded to each other, and the substrate side on which the light shielding layer is not formed as in the above-described embodiment. From the above, even when the main curing ultraviolet ray cannot be irradiated, the amount of the sealing material 12 drawn in can be controlled stably. In the modification shown in FIG. 8, the width of the first opening 14a for temporary curing and the second opening 14b for main curing, and the irradiation of the ultraviolet curing device 21 for temporary curing and the ultraviolet irradiation device 22 for main curing. Although both strengths are different, only one of them may be different.

  Next, a second modification shown in FIG. 9 will be described. In the modification shown in FIG. 9, the light shielding layer 13 is formed on the peripheral edge of the first substrate 10a among the pair of substrates bonded to face each other. The light shielding layer 13 is formed with an opening 14 extending substantially in parallel along the substrate end of the first substrate 10a. A light shielding layer 18 is formed on the peripheral edge of the other second substrate 10b. The light shielding layer 18 is formed with an opening 19 extending substantially in parallel along the substrate end of the second substrate 10b. The opening 19 is formed at a position facing the opening 14. That is, a light shielding layer having an opening at substantially the same position is formed on both substrate peripheral portions of the pair of bonded substrates.

  Further, an ultraviolet irradiation device 24 is arranged corresponding to each of the openings 14 and 19 of both substrates. In such a configuration, when the sealing material 12 drawn into the gap between the substrates reaches the opening 14 and the opening 19, ultraviolet rays are irradiated from both the first substrate 10 a side and the second substrate 10 b side. Is done. Especially when the distance between the first substrate 10a and the second substrate 10b is large, in the ultraviolet irradiation from one side, in the portion far from the irradiated side, the curing of the sealing material 12 is difficult to proceed, and the pull-in speed by temporary curing is increased. Control and the main curing process may not function sufficiently. In this modification, since the ultraviolet rays can be irradiated from both sides of the first substrate 10a and the second substrate 10b, the sealing material 12 can be sufficiently cured. In addition, by changing the widths of the openings of both substrates and the ultraviolet irradiation intensity of the respective ultraviolet irradiation devices 24, the roles of provisional curing and main curing can be provided as in the first modification. Is possible.

  Next, a third modification shown in FIG. 10 will be described. In the modification shown in FIG. 10, the light shielding layer 13 having the opening 14 is formed on the first substrate 10a as in the first modification. On the other hand, a light shielding layer 18 having no opening is formed on the second substrate 10b. In this modification, a resin in which a black pigment is dispersed is used as the light shielding layer 18. With such a configuration, it is possible to reduce the reflection diffusion of the ultraviolet light irradiated through the opening 14 by the light shielding layer 18 as compared with the case where a metal film or the like is used as the light shielding layer 18.

  When the ultraviolet ray irradiated from the opening 14 is reflected and diffused by the light shielding layer 18, the ultraviolet ray is irradiated to the sealing material 12 before reaching the opening 14. For this reason, a phenomenon occurs in which the pull-in speed is reduced before reaching the opening 14 or, in the worst case, the pull-in stops before reaching the opening 14. In such a case, since a predetermined pull-in amount cannot be obtained, the sealing reliability is deteriorated. According to this modification, as the light shielding layer 18 formed on the second substrate 10b side where the opening portion 14 is not provided, a resin in which a black pigment is dispersed is used, so that the ultraviolet light applied to the light shielding layer 18 is emitted. Absorbed to prevent unnecessary scattering. For this reason, it is possible to make it difficult to cause problems such as deterioration of the reliability of sealing as described above.

  Next, a fourth modification will be described with reference to FIG. The modification shown in FIG. 11 is an example in which the ultraviolet irradiation for temporary curing for controlling the pull-in position is omitted. In the present modification, as in the first modification, a light shielding layer 13 having an opening 14 is formed on the first substrate 10a. On the other hand, a light shielding layer 18 having no opening is formed on the second substrate 10b. In the opening 14, the sealing material 12 can be cured to some extent even by ambient light such as room light and natural light without particularly irradiating ultraviolet rays, and the effect of slowing the pull-in speed can be exhibited.

  That is, in the structure according to the present invention, it is possible to improve the pull-in controllability by performing the sealing using the sealing material 12 that is cured by ultraviolet rays or light without providing a provisional curing process. Can do. Furthermore, the entrapment stop effect of the sealing material 12 can be improved by using a photo-curing resin material that is cured by visible light or the like as the sealing material 12. A light shielding layer 18 in which no opening is formed is formed on the second substrate 10b side. As a result, the effect of controlling the pulling-in of the sealing material 12 by curing is further exhibited by the incidence of light from the opening 14.

  Even in the case where a light shielding layer is also formed on the opposite substrate side as in Modifications 1 to 4 described above, the ultraviolet light for main curing is irradiated from the opening 14 to seal the opening 14. The stopper 12 is completely cured, and the entrainment of the sealant 12 can be completely stopped. Further, since the completely cured sealing material 12 is formed over the width of the opening 14 in the extending direction, a certain degree of sealing reliability can be obtained. You can complete it. Furthermore, when used for applications that require sealing reliability, UV light for main curing is separately applied from the vertical direction from the substrate edge to the end face of the portion that is not irradiated by the light shielding layer provided on both substrates. All of the resin applied by irradiation may be cured, which can further improve the reliability of sealing.

Embodiment 4 FIG.
The configuration of the liquid crystal panel according to Embodiment 4 of the present invention will be described with reference to FIG. FIG. 12 is a diagram showing a configuration of the liquid crystal display device 200 according to the present embodiment. Here, a TFT (Thin Film Transistor) type liquid crystal panel will be described as an example. As shown in FIG. 12, the liquid crystal display device 200 includes a liquid crystal panel 240 including a switching element substrate 210, a color filter substrate 220, a liquid crystal 230, and the like.

  A sealing material 233 is disposed between the switching element substrate 210 and the color filter substrate 220, and both substrates are bonded together by the sealing material 233. A space between the switching element substrate 210 and the color filter substrate 220 is maintained by a spacer (not shown). The sealing material 233 is provided with an injection port 235, and the liquid crystal 230 is filled between the switching element substrate 210 and the color filter substrate 220 through the injection port. The injection port 235 is sealed with a sealing material 234 made of an ultraviolet curable resin.

  The switching element substrate 210 includes a glass substrate 211, an alignment film 212, a pixel electrode 213, a switching element 214, an insulating film 215, a terminal 216, and the like. On one surface of the glass substrate 211, a switching element 214 made of TFT and a wiring (not shown) for supplying a signal to the switching element 214 are formed. An insulating film 215 is formed on the switching element 214 and the wiring so as to cover them. A pixel electrode 213 is connected to the switching element 214. The voltage supplied to the pixel electrode 213 is controlled by the switching element 214. The pixel electrode 213 applies a voltage for driving the liquid crystal 230. A region where a plurality of pixel electrodes 213 are formed is a display region.

  An alignment film 212 for aligning the liquid crystal 230 is formed on the upper layer of the pixel electrode 213. A terminal 216 and a transfer electrode (not shown) are formed at the end of the glass substrate 211. The terminal 216 receives a signal supplied to the switching element 214 from the outside. The transfer electrode transmits a signal input from the terminal 216 to a common electrode formed on the color filter substrate 220 side. A polarizing plate 231 is provided on the other surface of the glass substrate 211.

  The color filter substrate 220 includes a glass substrate 221, an alignment film 222, a common electrode 223, a colored layer 224, a light shielding layer 225, and the like. A color filter including a colored layer 224 and a light shielding layer 225 is formed on the glass substrate 221. The light shielding layer 225 is provided between the colored layers 224 and in a peripheral region surrounding the display region. A common electrode 223 is formed on the coloring layer 224 and the light shielding layer 225. The common electrode 223 generates an electric field between the pixel electrode 213 formed on the switching element substrate 210 and drives the liquid crystal 230. An alignment film 222 for aligning the liquid crystal 230 is formed on the common electrode 223.

  In the liquid crystal display device 200 according to the present embodiment, the light shielding layer 225 is formed on the peripheral edge of the color filter substrate 220 with a predetermined width from the substrate edge. In addition, a slit 226 from which the light shielding layer 225 is removed is formed from a position away from the substrate edge by a predetermined distance toward the inside of the substrate. The slit 226 is provided in order to control the drawing position of the sealing material 234. A polarizing plate 232 is provided on the other surface of the glass substrate 221. As the polarizing plate 232, a polarizing plate made of the same material as the polarizing plate 231 is used.

  The transfer electrode and the common electrode 223 are electrically connected by a transfer material (not shown), and a signal input from the terminal 216 is transmitted to the common electrode 223. In addition, the liquid crystal display device 200 includes a control board 236, an FFC (Flexible Flat Cable) 237, and a back tight unit (not shown). The control board 236 generates a drive signal for the liquid crystal panel. The FFC 237 electrically connects the control board 236 to the terminal 216. Further, a backlight unit serving as a light source is provided on the non-viewing side of the liquid crystal panel 240.

  The liquid crystal display device 200 operates as follows. For example, when a drive signal is input from the control substrate 236, a drive voltage is applied to the pixel electrode 213 and the common electrode 223. The direction of the molecules of the liquid crystal 230 changes according to the applied drive voltage. The light emitted from the backlight is transmitted or blocked outside through the switching element substrate 210, the liquid crystal 230, and the color filter substrate 220, so that an image or the like is displayed on the liquid crystal display device 200.

  The liquid crystal display device 200 is an example and may have other configurations. The operation mode of the liquid crystal display device 200 may be a TN (Twisted Nematic) mode, an STN (Supper Twisted Nematic) mode, a ferroelectric liquid crystal mode, or the like. The driving method may be a simple matrix or an active matrix. Further, a common electrode 223 provided on the color filter substrate 220 may be installed on the switching element substrate 210 side, and a lateral electric field method in which an electric field is applied to the liquid crystal 230 in the lateral direction between the pixel electrode 213 may be used. .

  Next, a method for manufacturing the liquid crystal display device 200 according to the present embodiment will be described. Here, a case where a plurality of liquid crystal cells are formed on one mother substrate will be described, but individual liquid crystal cells can also be formed separately. The manufacturing method of the switching element substrate 210 and the color filter substrate 220, which are substrates for the liquid crystal display device, will be briefly described because a general method is used.

  The switching element substrate 210 forms a switching element 214, a pixel electrode 213, a terminal 216, and a transfer electrode on one surface of the glass substrate 211 by repeatedly using a pattern formation process such as film formation, patterning by photolithography, and etching. It is manufactured by doing. Similarly, the color filter substrate 220 is manufactured by forming a color filter having a common electrode 223 made of ITO, the colored layer 224, and the light shielding layer 225 on one surface of the glass substrate 221.

  The switching element substrate 210 and the color filter substrate 220 are each formed of a large number of liquid crystal panels 240 by a switching element substrate mother substrate from which a large number of switching element substrates 210 are extracted and a color filter substrate mother substrate from which a large number of color filter substrates 220 are extracted. Is done.

  Here, in the mother substrate for the color filter substrate, as described with reference to FIG. 1 of Embodiment 1, the light shielding layer 225 and the slit 226 are processed at the peripheral edge of the substrate, and the light shielding layer 225 formed between the pixels is processed. At the same time when forming. Further, with respect to the color filter substrate 220 of each liquid crystal panel formed in large numbers in the mother substrate for the color filter substrate, as described with reference to FIG. 225 and the slit 226 are formed at the same time when the light shielding layer 225 similarly formed between the pixels is processed.

  Next, an assembly process of the liquid crystal display device 200 according to the fourth embodiment will be described with reference to the flowchart shown in FIG. First, in the substrate cleaning step, the switching element substrate mother substrate from which a large number of switching element substrates 210 on which the pixel electrodes 213 are formed is taken out is cleaned (S1). Next, in the alignment film material application step, an organic film made of polyimide, which is a material of the alignment film 212, is applied to one surface of the mother substrate by, for example, a printing method, and is baked and dried by a hot plate or the like (S2). ). Thereafter, an alignment process is performed on the mother substrate coated with the alignment film material in an alignment process to form an alignment film 212 (S3). In addition, for the color filter substrate mother substrate from which a large number of color filter substrates 220 on which the common electrode 223 is formed are taken out, the alignment film is obtained by performing cleaning, coating of an organic film, and alignment treatment in the same manner as in S1 to S3. 222 is formed.

  Subsequently, in a seal coating process for forming a seal pattern, a seal 233 is coated on one surface of the switching element substrate mother substrate or the color filter substrate mother substrate using seal printing (S4). For the seal 233, for example, a thermosetting resin such as an epoxy adhesive or an ultraviolet curable resin is used.

  Next, in the transfer material application process, the transfer material is applied to one surface of the switching element substrate mother substrate or the color filter substrate mother substrate (S5). In the spacer spraying step, spacers are sprayed on one surface of the switching element substrate mother substrate or the color filter substrate mother substrate (S6). This step is performed, for example, by dispersing the spacers by a wet method or a dry method. The spacer spraying step can be omitted by forming a protruding column spacer that determines the distance between the substrates in advance on one surface of the switching element substrate mother substrate or the color filter substrate mother substrate. It is.

  Thereafter, in the bonding step, the switching element substrate mother substrate and the color filter substrate mother substrate are bonded together (S7). Subsequently, in the seal curing step, the seal 233 is completely cured with the switching element substrate mother substrate and the color filter substrate mother substrate bonded together (S8). This step is performed, for example, by applying heat according to the material of the seal 233 or by irradiating ultraviolet rays. In this manner, a counter substrate for a liquid crystal panel in which the switching element substrate mother substrate and the color filter substrate mother substrate are bonded together is formed.

  Next, in order to reduce the thickness and weight of the liquid crystal panel, a thinning and polishing step is performed to scrape the switching element substrate mother substrate and the color filter substrate mother substrate constituting the counter substrate for the liquid crystal panel (S9). In this step, first, using the method of the first embodiment, a sealing step of the peripheral portion of the substrate with an ultraviolet curable resin is performed. Specifically, a sealing material made of an ultraviolet curable resin is applied to the peripheral edge portion of the counter substrate for a liquid crystal panel, that is, the side surfaces of a pair of bonded substrates. Then, after the sealing material is drawn into the gap between the substrates by capillary action, the temporary curing ultraviolet ray is irradiated from the opening. Then, the ultraviolet light for main curing is irradiated to the opening part from which the light shielding layer is not formed. Subsequently, for example, the surface of the glass substrate is cut by chemical polishing using a chemical solution or physical polishing using an abrasive.

  Next, in the cell dividing step, the liquid crystal panel counter substrate on which the switching element substrate mother substrate and the color filter substrate mother substrate are bonded is disassembled into individual cells (S10). In the liquid crystal injection step, liquid crystal as a display material is injected from the liquid crystal injection port (S11). This step is performed, for example, by filling the liquid crystal 230 by vacuum injection from the liquid crystal injection port. Further, in the sealing step, the liquid crystal inlet is sealed (S12). This step is performed using the method of the second embodiment. A liquid crystal cell is manufactured as described above.

  About the process from bonding of the above S7-S12 to liquid crystal sealing, the liquid crystal injection method from a normal liquid crystal injection port was demonstrated as an example. However, a so-called drop injection method may be used as another liquid crystal injection method. In the dropping injection method, for example, the seal 233 has a pattern shape without an injection port, and the liquid crystal 230 is dropped on the switching element substrate 210 or the color filter substrate 220 in a droplet state. Then, after the switching element substrate 210 and the color filter substrate 220 are bonded together so as to sandwich the dropped liquid crystal 230, the seal 233 is cured. Since the sealing of the peripheral portion of the substrate and the thinning process of the substrate in the counter substrate for a liquid crystal panel according to Embodiment 1 of the present invention are effective in the dropping injection method, the dropping injection method may be used.

  Finally, the polarizing plates 231 and 232 are attached to the liquid crystal cell in the polarizing plate attaching step (S13), and the control substrate 236 is mounted in the control substrate mounting step (S14), thereby completing the liquid crystal display device 200.

  In the liquid crystal display device in the fourth embodiment described above, the substrate peripheral portion sealing method described in the first embodiment is used in the thinning process of the counter substrate for the liquid crystal panel. Further, in the liquid crystal injection port sealing step, the sealing method of the second embodiment is used. As a result, the pull-in amount of the UV curable resin that seals the peripheral edge of the substrate can be stabilized, the pull-in time can be easily managed during manufacturing, and the yield and reliability of the manufactured liquid crystal panel can be improved. be able to.

  In the fourth embodiment, the substrate peripheral portion sealing method described in the first embodiment is used in the substrate thinning process, and the sealing of the second embodiment is performed in the liquid crystal inlet sealing step. The liquid crystal display device manufactured using the stopping method has been described. However, the methods of Embodiment 1 and Embodiment 2 are effective even when each is used alone, and therefore only one of them may be used. In addition, in place of the sealing method of the substrate peripheral portion of the first embodiment and the sealing method of the second embodiment, this method is also used in the case of using the sealing method described in some modified examples of the third embodiment. The same effects as in the fourth embodiment can be obtained.

2 is a diagram showing a configuration of a counter substrate for a liquid crystal panel according to Embodiment 1. FIG. FIG. 5 is a diagram for explaining a sealing process of the peripheral edge portion of the counter substrate for liquid crystal panel according to the first embodiment. 3 is a cross-sectional view showing a configuration of a part of the peripheral edge of the counter substrate for a liquid crystal panel according to Embodiment 1. FIG. FIG. 4 is a diagram showing a configuration after sealing processing of the peripheral edge portion of the counter substrate for liquid crystal panel according to the first embodiment. FIG. 10 is a diagram for explaining another example of the sealing process of the peripheral edge portion of the counter substrate for liquid crystal panel according to the first embodiment. 6 is a diagram illustrating a configuration of a counter substrate for a liquid crystal panel according to Embodiment 2. FIG. 6 is a diagram for explaining sealing of an injection port of a counter substrate for a liquid crystal panel according to Embodiment 2. FIG. 6 is a diagram illustrating a configuration example of a counter substrate for a liquid crystal panel according to Embodiment 3. FIG. 6 is a diagram illustrating a configuration example of a counter substrate for a liquid crystal panel according to Embodiment 3. FIG. 6 is a diagram illustrating a configuration example of a counter substrate for a liquid crystal panel according to Embodiment 3. FIG. 6 is a diagram illustrating a configuration example of a counter substrate for a liquid crystal panel according to Embodiment 3. FIG. FIG. 6 is a diagram illustrating a configuration of a liquid crystal display device according to a fourth embodiment. 10 is a flowchart for explaining a manufacturing method of the liquid crystal display device according to the fourth embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Liquid crystal panel counter substrate 10a 1st board | substrate 10b 2nd board | substrate 11 Liquid crystal panel 12 Sealing material 13 Light shielding layer 13a 1st light shielding layer 13b 2nd light shielding layer 14 Opening part 14a 1st opening part 14b 2nd opening part 15 Color material 16 Black Matrix 17 Sealing Material 18 Light-shielding Layer 19 Opening 20 Application Nozzle 21 Temporary Curing UV Irradiation Device 22 Full Curing UV Irradiation Device 23 Mask 24 UV Irradiation Device 30 Liquid Crystal Cell 31 Color Filter Substrate 32 Switching Element Substrate 33 Sealing Material 34 Liquid crystal 35 Inlet 36 Terminal 200 Liquid crystal panel 210 Switching element substrate 211 Glass substrate 212 Alignment film 213 Pixel electrode 214 Switching element 215 Insulating film 216 Terminal 220 Color filter substrate 221 Glass substrate 222 Alignment film 223 Common electrode 224 Color layer 225 light-shielding layer 226 slit 230 LCD 231 polarizer 232 polarizer 233 sealant 234 sealant 235 inlet 236 control board 237 FFC
240 LCD panel

Claims (19)

A first substrate and a second substrate bonded together with a predetermined interval;
A photocurable sealing material provided on at least a part of the peripheral edge of the substrate between the first substrate and the second substrate;
A first light-shielding layer formed with a predetermined width from a substrate end of the first substrate in the region where the sealing material is provided;
A first opening from which the first light-shielding layer is removed toward a center of the substrate from a position away from the substrate edge by a predetermined distance;
Equipped with a,
The first substrate is a mother substrate for a switching element substrate;
The second substrate is a mother substrate for a color filter substrate;
The sealing material surrounds the entire periphery of the peripheral edge of the substrate.
Counter substrate for display panel. A first substrate and a second substrate bonded together with a predetermined interval;
A photocurable sealing material provided on at least a part of the peripheral edge of the substrate between the first substrate and the second substrate;
A first light-shielding layer formed with a predetermined width from a substrate end of the first substrate in the region where the sealing material is provided;
A first opening from which the first light-shielding layer is removed toward a center of the substrate from a position away from the substrate edge by a predetermined distance;
With
The first substrate and the second substrate are bonded together by a sealing material formed along each substrate end, having an open portion in a part corresponding to a region where the first light shielding layer is formed,
The sealing material is provided in a region where the opening is formed ,
The first substrate is a mother substrate for a switching element substrate;
The second substrate is a mother substrate for a color filter substrate;
The entire circumference of the peripheral edge of the substrate is surrounded by the sealing material and the sealing material.
Counter substrate for display panel. The first opening includes a display panel for a counter substrate according to claim 1 or 2 is a slit formed substantially parallel to the said substrate edge. 4. The display panel according to claim 3 , wherein the first opening includes a first slit formed substantially parallel to the substrate end and a second slit formed closer to the substrate center than the first slit. 5. Counter substrate. The counter substrate for a display panel according to claim 4 , wherein the second slit is wider than the first slit. Wherein the sealing material is provided area, the second display panel opposing substrate according to any one of claims 1 to 5 on the substrate wherein the light-shielding layer is not formed. A second light shielding layer formed with a predetermined width from the substrate end of the second substrate;
It is formed on the second light-shielding layer, according to any one of claims 1 to 5, further comprising a second opening formed in the first opening and substantially the same position, which is formed on the first light-shielding layer Counter panel for display panels. A second light-shielding layer formed with a predetermined width from the substrate end of the second substrate;
It said second light-shielding layer, a display panel for a counter substrate according to any one of claims 1 to 5 formed of resin containing a dispersed black pigment. Display device formed by processing the display panel opposing substrate according to any one of claims 1-8. Forming a first light-shielding layer having a first opening formed at a predetermined distance from the substrate end of the first substrate toward the substrate center side with a predetermined width from the substrate end of the first substrate; When,
Bonding the first substrate and the second substrate at a predetermined interval;
A photo-curing sealing material is applied to at least a part of the peripheral edge of the first substrate and the second substrate, and the sealing material drawn between the first substrate and the second substrate is applied to the sealing material. Irradiating ultraviolet rays through the first opening to seal the periphery of the substrate;
Only including,
The first substrate is a mother substrate for a switching element substrate;
The second substrate is a mother substrate for a color filter substrate;
Applying the sealing material to the entire periphery of the peripheral edge of the substrate;
Manufacturing method of the table shows the device. Forming a first light-shielding layer having a first opening formed at a predetermined distance from the substrate end of the first substrate toward the substrate center side with a predetermined width from the substrate end of the first substrate; When,
Bonding the first substrate and the second substrate at a predetermined interval;
A photo-curing sealing material is applied to at least a part of the peripheral edge of the first substrate and the second substrate, and the sealing material drawn between the first substrate and the second substrate is applied to the sealing material. Irradiating ultraviolet rays through the first opening to seal the periphery of the substrate;
Including
The first substrate and the second substrate are bonded to each other by a sealant formed along each substrate end, having an open portion in a part corresponding to the region where the first light shielding layer is formed,
The sealing material is provided in a region where the opening is formed,
The first substrate is a mother substrate for a switching element substrate;
The second substrate is a mother substrate for a color filter substrate;
The entire circumference of the peripheral edge of the substrate is surrounded by the sealing material and the sealing material.
Manufacturing method of the table shows the device. Wherein after sealing the peripheral portion of the substrate, a manufacturing method of a display device according to claim 10 or 11 further comprising the step of thinning by polishing the first substrate and the surface of the second substrate. The step of sealing the periphery of the substrate includes
A step of temporarily curing the sealing material by applying the sealing material while irradiating light;
A step of irradiating the sealing material with light to perform main curing;
Method of manufacturing a display device according to any one of claims 10 to 12, including a. As the first opening, a slit formed substantially in parallel with the substrate end is formed,
Along said slit, a method of manufacturing a display device according to any one of claims 10 to 13 for irradiating light to the sealing material. As the first opening, a first slit formed substantially parallel to the substrate end, and a second slit formed closer to the substrate center than the first slit,
Irradiating light for temporary curing of the sealing material through the first slit,
The method for manufacturing a display device according to claim 14 , wherein light for main curing of the sealing material is irradiated through the second slit. The method for manufacturing a display device according to claim 15 , wherein the second slit is wider than the first slit. In the region where the sealing material is provided, a light shielding layer is not formed on the second substrate,
Irradiating light for temporary curing of the sealing material from the first substrate side, from the second substrate side of any one of claims 10 to 14 for irradiating the light for the curing of the sealing material The manufacturing method of the display apparatus of description. Forming a second light-shielding layer having a second opening formed at substantially the same position as the first opening formed in the first light-shielding layer with a predetermined width from the substrate end of the second substrate; In addition,
The method for manufacturing a display device according to claim 10 , wherein the sealing material is irradiated with light through the first opening and the second opening. 17. The display device according to claim 10 , further comprising a step of forming a second light-shielding layer made of a resin in which a black pigment formed with a predetermined width from the substrate end of the second substrate is dispersed. Manufacturing method.

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