TWI721688B - A liquid crystal double-frame adhesive device - Google Patents

Abstract

The invention relates to a liquid crystal double-frame adhesive device, which includes: a first substrate, a first frame adhesive, a second frame adhesive, and a second substrate. The first frame adhesive is disposed on the first substrate and surrounds the first substrate and provide a preset area . The preset area is provided with a liquid crystal layer. The second frame rubber is disposed outside of the first frame rubbers, and is discontinuously surrounded on an outer edge of the first substrate or the first frame. The second substrate is fixedly connected to the first frame adhesive and the second frame adhesive and is disposed on the first substrate. With the above structure, the uniformity and stability of the liquid crystal panel are improved, and reliability problems at the border of the liquid crystal panel are avoided.

Description

Liquid crystal double frame glue device

The present invention relates to a liquid crystal double-frame glue device, in particular to a liquid crystal device with double-layer glue on a substrate.

In the prior art, in the field of special-shaped panel cutting, after the sealant coating assembly, there are two general processes. One is that the laser cuts a target shape along the required frame, which has high precision, high quality, and fast speed. Compared with other cutting, the cost is higher. The second is to first cut with the cutter wheel along the fixed direction of the frame, and then use the grinding rod to process the arc-shaped frame to obtain a target shape, which is less costly than laser cutting. The special-shaped panel cutting program is based on the second process.

Generally speaking, in panels with different frame shapes and display area shapes, the uniformity of the liquid crystal panel needs to be considered. Please refer to Figure 1A, which is the first schematic diagram of the manufacturing process of the conventional technology. As shown in the figure, before cutting, it is still necessary to design a fixed width sealant 2 along a distance around a display area 3. However, a larger area of glass will be exposed at the arc-shaped cutting of a substrate 1. Grinding and cutting will change the stress of the glass at the place, which will affect the film surface and increase the risk of defects, especially if it is subjected to a reliability test, it will be more obviously degraded. Please refer to Figure 1B, which is the second schematic diagram of the manufacturing process of the prior art. As shown in the figure, part of the inner edge of the sealant 2 is far from the display area 3, but the liquid crystal panel formed by the substrate 1 has poor uniformity and stability, and the risk of peripheral mura is higher. Please refer to FIG. 1C. The width of the sealant 2 has a large difference, and the problem of resistance to stand deviation due to insufficient curing is likely to occur. The height of the sealant 2 is relatively easy to vary, which affects the uniformity and stability of the liquid crystal panel formed by the substrate 1.

In the cell manufacturing process of the liquid crystal panel, sealant printing has three purposes. One is to accurately fix the assembled Array and CF substrates. The second is to isolate the liquid crystal from the outside world to avoid environmental impact and liquid crystal pollution. Third, the stable display area and the liquid crystal panel around the display area to the frame are uniform. Therefore, in general, the area and width of the sealant coating design will be based on the aforementioned three considerations. The embodiment in Figure 1A and Figure 1B is to apply the sealant along a distance around the display area to enable bonding of Array and CF. The side glass does not shift, and makes the liquid crystal panel around the display area uniform and stable. The embodiment in Figure 1C is the width of the sealant. Under the premise of meeting the design, the inner edge of the sealant is advanced to a distance from the periphery of the display area. , The outer edge of the sealant is pushed to a distance from the panel frame. The width of each zone should avoid too large differences. If the difference is too large, insufficient curing will occur, which will cause the assembly of the Array and CF side to shift. If the sealant is too large, it will easily cause liquid crystal. The panel changes, causing the surrounding Mura.

Therefore, how to provide a liquid crystal double frame glue device that satisfies the uniformity and stability of the liquid crystal panel and can avoid the reliability problem at the large edge of the substrate is the research direction of the present invention.

One objective of the present invention is to provide a liquid crystal double frame glue device, which improves the uniformity and stability of the liquid crystal panel and avoids the reliability problem of the boundary of the liquid crystal panel.

In order to achieve the above objective, the present invention discloses a liquid crystal double frame glue device, which comprises: a first substrate: a first frame glue, which is arranged on the first substrate and surrounds a predetermined area. A liquid crystal layer is arranged in the area; a second sealant is arranged on the outside of one of the first sealants, and is discontinuously arranged around an outer edge of the first substrate or one of the first sealants Edge; and a second substrate, which is fixedly connected to the first sealant and the second sealant and is set on the first substrate; wherein, a first seal is provided between the first sealant and the second sealant With the above-mentioned structure, the pitch improves the uniformity and stability of the liquid crystal panel, and avoids reliability problems at the boundary of the liquid crystal panel.

In an embodiment of the present invention, it is also disclosed that the first pitch is greater than 200 μm.

In an embodiment of the present invention, it is also disclosed that a second distance is provided between the first sealant and an outer edge of the predetermined area.

In an embodiment of the present invention, it is also disclosed that the second pitch is 250-530 μm.

In an embodiment of the present invention, it is also disclosed that a third distance is provided between the second sealant and an outer edge of the predetermined area.

In an embodiment of the present invention, it is also disclosed that the third pitch is 400-800 μm.

In an embodiment of the present invention, it is also disclosed that the second substrate is a color filter.

In an embodiment of the present invention, it is also disclosed that a wiring area is provided on one side of the first substrate.

In an embodiment of the present invention, it is also disclosed that a functional area is further provided on the first substrate, and the functional area is located on one side of the predetermined area or in the predetermined area.

In an embodiment of the present invention, it is also disclosed that the first sealant and the second sealant are acrylic resin, epoxy resin, acrylic resin, aromatic epoxy resin, or bisphenol epoxy resin.

In order to enable your reviewer to have a further understanding and understanding of the features of the present invention and the effects achieved, the examples and detailed explanations are provided here. The explanations are as follows:

The present invention is a liquid crystal double frame glue device, which solves the problem of designing a fixed width frame glue along a distance around the display area in the prior art, but a larger area of glass is exposed at the arc-shaped cut, which is likely to cause grinding and cutting. Changes in glass stress affect the risk of film surface defects, and when the inner edge of the sealant is far from the display area, the uniformity and stability of the LCD panel is poor, the risk of peripheral mura increases, and the width of the sealant is increased. When the difference increases, the resistance deviation caused by insufficient curing and the height of the sealant may be easily changed.

Please refer to FIG. 2 and FIG. 3, which are a structural diagram of an embodiment of the liquid crystal double-frame glue device of the present invention and a side cross-sectional view of an embodiment of the liquid crystal double-frame glue device of the present invention. As shown in the figure, the liquid crystal double frame glue device includes a first substrate 10, a first frame glue 20, a second frame glue 30, and a second substrate 40. The first frame glue 20 is disposed on the first substrate. 10, and surround a predetermined area 12, the predetermined area 12 is provided with a liquid crystal layer 22, the second sealant 30 is set on the outside of one of the first sealant 20, and is discontinuously surrounding the An outer edge of the first substrate 10 or an outer edge of the first sealant 20 is surrounded, and the second substrate 40 is fixedly connected to the first sealant 20 and the second sealant 30 and is disposed on the first substrate 10 on.

Continuing the above, please refer to Fig. 2D and Fig. 2E together, which are partial enlarged views of the liquid crystal double frame glue device of the present invention. As shown in the figure, a first distance H is set between the first sealant 20 and the second sealant 30, wherein the first substrate 10 is a glass substrate, but not limited to this. The second substrate 40 is a color filter. In the prior art, the color filter is a key component of a color liquid crystal display (LCD) from gray to color. The backlight module provides a light source, and is matched with a driver IC and liquid crystal control to form a grayscale display, and the light source passes through the photoresist color layer of the color filter to form a color display screen. Both the first seal 20 and the second seal 30 are acrylic resin, epoxy resin, acrylic resin, aromatic epoxy resin or bisphenol epoxy resin. The preset area 12 is a display area for displaying images, numbers, pointers, etc., but is not limited to this. With the above-mentioned double frame glue structure, the first frame glue 20 and the second frame glue 30 are respectively arranged on the outer side of the predetermined area 12. The liquid crystal double frame glue device of the present invention improves the uniformity and stability of the liquid crystal panel. Avoid the problem of reliability on the edge.

The following is a detailed description of the first embodiment of the present invention. Please continue to refer to FIG. 3 and FIG. 2A to FIG. 2G together, which are schematic diagrams of the manufacturing process of the first embodiment of the liquid crystal double frame glue device of the present invention. A fourth schematic diagram of the manufacturing process and a partial enlarged view of an embodiment. As shown in the figure, first, a circular area of the first substrate 10 is selected on an original substrate 4. The circular area is the actual cutting area. After the cutting is completed, the liquid crystal double frame glue device can be obtained. . Secondly, the first sealant 20 is provided on the first substrate 10. The structure of the first sealant 20 can be changed according to specific conditions. In this embodiment, the first sealant 20 is square, and the first sealant 20 is used. A sealant 20 surrounds the preset area 12, and a liquid crystal layer 22 is disposed in the preset area 12. The preset area 12 is generally a display area, and the first sealant 20 can protect the preset area 12 When the panel is cut, the overall stress is even, avoiding problems of uniformity and stability. Then, the second sealant 30 is disposed on an outer side of the first sealant 20, and is discontinuously arranged around an outer edge of the first substrate 10 or an outer edge of the first sealant 20, in this case In an embodiment, the second sealant 30 is discontinuously arranged around an outer edge of the first substrate 10. Wherein, the first spacing H is set between the first sealant 20 and the second sealant 30, and the first spacing H is greater than 200μm; at an outer edge of the first sealant 20 and the predetermined area 12 Set the second spacing L, the second spacing L is 250~530μm; and set a third spacing I at the outer edge of one of the second sealant 30 and the preset area 12, the third spacing I is 400~ 800μm. Then, the second substrate 40 is fixed to the first sealant 20 and the second sealant 30 and arranged on the first substrate 10. The fixing method can be selected from visible light curing, ultraviolet curing, heat curing, and contact. Medium hardening, etc. Finally, the original substrate 4 is cut to obtain the liquid crystal double frame glue device. The above structure avoids the problem of designing a fixed-width sealant along a distance around the display area in the prior art, which is likely to cause the glass stress to change during grinding and cutting, which affects the risk of film surface defects, and solves the problem that the inner edge of the sealant is away from the display area When it is far away, the uniformity and stability of the LCD panel is poor, and the risk of surrounding mura is increased. In addition, it overcomes the problem of increased frame width difference, insufficient curing, and resistance deviation, and the height of the frame is easy to vary. Improve the process efficiency.

Please continue to refer to FIG. 3 and FIG. 4A to FIG. 4D together, which are schematic diagrams 1 to 4 of the manufacturing process of the second embodiment of the liquid crystal double-frame glue device of the present invention. As shown in the figure, firstly, a special-shaped area of the first substrate 10 is selected on the original substrate 4, and the special-shaped area is an irregular pattern. Secondly, set the first sealant 20 on the first substrate 10, the first sealant 20 is circular, and the first sealant 20 is used to surround the preset area 12, and in the preset area 12 A liquid crystal layer 22 is arranged inside, and the preset area 12 is generally a display area that needs to be used. Then, the second sealant 30 is disposed on an outer side of the first sealant 20, and is discontinuously arranged around an outer edge of the first substrate 10. The first spacing H is set between the first sealant 20 and the second sealant 30, the first spacing H is greater than 200μm, the length of the second sealant 30 is set according to the special-shaped area, and the second sealant The width of 30 can be adjusted according to the first distance H; the first seal 20 and an outer edge of the preset area 12 are set at the second distance (not shown in the figure), and the second distance is 250 ~530μm; a third distance (not shown in the figure) is set between the second sealant 30 and an outer edge of the preset area 12, and the third distance is 400~800μm. Then, the second substrate 40 is fixed to the first sealant 20 and the second sealant 30 and set on the first substrate 10. Finally, the original substrate 4 is cut to obtain the special-shaped liquid crystal double frame glue device. The above structure avoids the problem of designing a fixed-width sealant along a distance around the display area in the prior art, which easily causes the glass stress to change during grinding and cutting, which affects the risk of film surface defects, and solves the problem that the inner edge of the sealant is away from the display area. When it is far away, the uniformity and stability of the LCD panel is poor, and the risk of surrounding mura is increased. In addition, it overcomes the problem of increased frame width difference, insufficient curing, and resistance deviation, and the height of the frame is easy to vary. Improve the process efficiency.

Please continue to refer to FIG. 3 and FIG. 5A to FIG. 5D together, which are schematic diagrams 1 to 4 of the manufacturing process of the third embodiment of the liquid crystal double-frame glue device of the present invention. As shown in the figure, firstly, a triangular area of the first substrate 10 is selected on the original substrate 4, and the triangular area is the actual cutting area. Secondly, set the first sealant 20 on the first substrate 10, the first sealant 20 is circular, and the first sealant 20 is used to surround the preset area 12, and in the preset area 12 A liquid crystal layer 22 is arranged inside, and the preset area 12 is generally a display area that needs to be used. Then, the second sealant 30 is disposed on an outer side of the first sealant 20, and is discontinuously arranged around an outer edge of the first substrate 10. The first spacing H is set between the first sealant 20 and the second sealant 30, and the first spacing H is greater than 200μm; the first sealant 20 and one of the outer edges of the preset area 12 are set to the second Distance (not shown in the drawing), the second distance is 250~530μm; the second seal 30 and an outer edge of the preset area 12 are provided with a third distance (not shown in the drawing), the third distance The pitch is 400~800μm. Then, the second substrate 40 is fixed to the first sealant 20 and the second sealant 30 and set on the first substrate 10. Finally, the original substrate 4 is cut to obtain the triangular liquid crystal double frame glue device. The above structure avoids the problem of designing a fixed-width sealant along a distance around the display area in the prior art, which easily causes the glass stress to change during grinding and cutting, which affects the risk of film surface defects, and solves the problem that the inner edge of the sealant is away from the display area. When it is far away, the uniformity and stability of the LCD panel is poor, and the risk of peripheral mura is increased. In addition, it overcomes the increase in the width of the frame rubber, which is likely to occur due to insufficient curing, resulting in resistance offset, and the height of the frame rubber is easy to vary. Improved process efficiency.

Please refer to FIG. 6A and FIG. 6B, which are a schematic diagram of a fourth embodiment and a schematic diagram of a fifth embodiment of the liquid crystal double-frame glue device of the present invention. As shown in the figure, the difference between this embodiment and the third embodiment is that in this embodiment, a functional area 50 is further provided on the first substrate 10, and the functional area 50 is located in the preset area 12 or One side of the preset area 12, wherein the functional area 50 can be provided with keys, or the functional area 50 can be set as a touch control area, and the functional area 50 is electrically connected to the preset area 12 to realize the use of this function The area 50 controls the preset area 12, for example, the function area 50 is used to adjust the preset area 12 to display a stopwatch, weather or news information, etc. The other structure of this embodiment is basically the same as that of the third embodiment, so it will not be repeated here.

Please refer to FIG. 7, which is a schematic diagram of a sixth embodiment of the liquid crystal double frame glue device of the present invention. As shown in the figure, the difference between this embodiment and the third embodiment is that in this embodiment, a hole 122 is provided on the predetermined area 12 of the first substrate 10, and the hole 122 can be provided with a pointer, but The size of the hole 122 is not limited, for example, another display area is provided at the hole 122 or the hole 122 is set as a hollow structure to realize the display of multiple functions. The other structure of this embodiment is basically the same as that of the third embodiment, so it will not be repeated here.

Please refer to FIG. 8, which is a schematic diagram of an embodiment of the liquid crystal double frame glue device of the present invention. As shown in the figure, in this embodiment or any of the foregoing embodiments, a wiring area 60 is provided on one side of the first substrate 10, and the preset area 12 is connected to a plurality of wiring lines (not shown in the drawings), The cables are arranged in the cable area 60 to provide power or signal transmission to the predetermined area 12. The other structure of this embodiment is basically the same as that of the third embodiment, so it will not be repeated here.

To sum up, in a liquid crystal double frame glue device of the present invention, the first frame glue is arranged on the first substrate and surrounds a predetermined area, the predetermined area is provided with a liquid crystal layer, and the second The sealant is disposed on the outer side of one of the first sealants, and is discontinuously surrounding an outer edge of the first substrate or an outer edge of the first sealant, and the second substrate is fixed to the first sealant And the second sealant are arranged on the first substrate, and a first gap is set between the first sealant and the second sealant, which improves the uniformity and stability of the liquid crystal panel and avoids the liquid crystal panel Reliability issues arise on the boundary.

Therefore, the present invention is really novel, progressive, and available for industrial use. It should meet the patent application requirements of my country's patent law. I file an invention patent application in accordance with the law. I pray that the Jun Bureau will grant the patent as soon as possible.

However, the above are only the preferred embodiments of the present invention, and are not used to limit the scope of implementation of the present invention. For example, the shapes, structures, features and spirits described in the scope of the patent application of the present invention are equally changed and modified. , Should be included in the scope of patent application of the present invention.

1: substrate 2: frame glue 3: display area 4: Original substrate 10: The first substrate 12: Preset area 122: Hole 20: The first frame glue 22: liquid crystal layer 30: second frame glue 40: second substrate 50: Ribbon 60: Wiring area H: first spacing L: second spacing I: third pitch

Figure 1A: It is the first schematic diagram of the manufacturing process of the conventional technology; Figure 1B: It is the second schematic diagram of the manufacturing process of the conventional technology; Figure 1C: It is the third schematic diagram of the manufacturing process of the conventional technology; Figure 2: It is a schematic structural diagram of an embodiment of the liquid crystal double frame glue device of the present invention; Fig. 2A: It is a schematic diagram 1 of the manufacturing process of the first embodiment of the liquid crystal double frame glue device of the present invention; Figure 2B: It is a schematic diagram 2 of the manufacturing process of the first embodiment of the liquid crystal double frame glue device of the present invention; Fig. 2C: It is a schematic diagram 3 of the manufacturing process of the first embodiment of the liquid crystal double frame glue device of the present invention; Figure 2D: It is the fourth schematic diagram of the manufacturing process of the first embodiment of the liquid crystal double frame glue device of the present invention; Figure 2E: It is a partial enlarged view of the liquid crystal double frame glue device of the present invention; Figure 2F: It is a partial enlarged view of the liquid crystal double frame glue device of the present invention; Figure 2G: It is a partial enlarged view of the liquid crystal double frame glue device of the present invention; Figure 3: It is a side cross-sectional view of an embodiment of the liquid crystal double frame glue device of the present invention; Fig. 4A: It is a schematic diagram 1 of the manufacturing process of a second embodiment of the liquid crystal double frame glue device of the present invention; Figure 4B: It is the second embodiment of the manufacturing process schematic diagram of the second embodiment of the liquid crystal double frame glue device of the present invention; Fig. 4C: It is a schematic diagram 3 of the manufacturing process of the second embodiment of the liquid crystal double frame glue device of the present invention; Figure 4D: It is the fourth schematic diagram of the manufacturing process of the second embodiment of the liquid crystal double frame glue device of the present invention; Fig. 5A: It is a schematic diagram 1 of the manufacturing process of the third embodiment of the liquid crystal double frame glue device of the present invention; Figure 5B: It is a schematic diagram 2 of the manufacturing process of the third embodiment of the liquid crystal double frame glue device of the present invention; Fig. 5C: It is a schematic diagram 3 of the manufacturing process of the third embodiment of the liquid crystal double frame glue device of the present invention; Fig. 5D: It is a schematic diagram 4 of the manufacturing process of the third embodiment of the liquid crystal double frame glue device of the present invention; Fig. 6A: It is a schematic diagram of a fourth embodiment of the liquid crystal double frame glue device of the present invention; Figure 6B: It is a schematic diagram of a fifth embodiment of the liquid crystal double frame glue device of the present invention; Figure 7: It is a schematic diagram of a sixth embodiment of the liquid crystal double frame glue device of the present invention; and Figure 8: It is a schematic diagram of an embodiment of the liquid crystal double frame glue device of the present invention.

10: The first substrate

12: Preset area

20: The first frame glue

30: second frame glue

Claims (7)

A liquid crystal double frame glue device, comprising: a first substrate: a first frame glue, which is arranged on the first substrate and surrounds a predetermined area in which a liquid crystal layer is arranged; Two frame glues, which are arranged on the outside of one of the first frame glues, and are discontinuously arranged around an outer edge of the first substrate or an outer edge of the first frame glue; and a second substrate, which is fixed The first sealant and the second sealant are connected and arranged on the first substrate; wherein, a first distance is set between the first sealant and the second sealant, and the first distance is greater than 200 μm. A liquid crystal double frame glue device, comprising: a first substrate: a first frame glue, which is arranged on the first substrate and surrounds a predetermined area in which a liquid crystal layer is arranged; Two frame glues, which are arranged on the outside of one of the first frame glues, and are discontinuously arranged around an outer edge of the first substrate or an outer edge of the first frame glue; and a second substrate, which is fixed Connect the first sealant and the second sealant and set on the first substrate; wherein, a first distance is set between the first sealant and the second sealant, and the first sealant and the pre-seal It is assumed that a second distance is set on the outer edge of one of the regions, and the second distance is 250-530 μm. A liquid crystal double frame glue device, which comprises: A first substrate: a first sealant, which is arranged on the first substrate, and surrounds a predetermined area in which a liquid crystal layer is arranged; a second sealant is arranged on the first One outer side of the sealant and discontinuously surrounding an outer edge of the first substrate or an outer edge of the first sealant; and a second substrate fixedly connected to the first sealant and the second sealant The sealant is arranged on the first substrate; wherein, a first distance is set between the first sealant and the second sealant, and a third distance is set between the second sealant and an outer edge of the predetermined area. The distance, the third distance is 400~800μm. According to the liquid crystal double frame glue device described in item 1 of the scope of patent application, the second substrate is a color filter. A liquid crystal double frame glue device, comprising: a first substrate: a first frame glue, which is arranged on the first substrate and surrounds a predetermined area in which a liquid crystal layer is arranged; Two frame glues, which are arranged on the outside of one of the first frame glues, and are discontinuously arranged around an outer edge of the first substrate or an outer edge of the first frame glue; and a second substrate, which is fixed Connect the first sealant and the second sealant and set on the first substrate; wherein, a first gap is set between the first sealant and the second sealant, and one side of the first substrate is set A row of lines area. A liquid crystal double frame glue device, which comprises: a first substrate: A first sealant is arranged on the first substrate and surrounds a predetermined area in which a liquid crystal layer is arranged; a second sealant is arranged outside one of the first sealants , And discontinuously surrounding an outer edge of the first substrate or an outer edge of the first seal; and a second substrate fixedly connected to the first seal and the second seal and arranged on On the first substrate; wherein, a first distance is set between the first sealant and the second sealant, and a functional area is further provided on the first substrate, and the functional area is located on one side of the preset area or Located in the preset area. The liquid crystal double frame glue device described in the first item of the scope of patent application, wherein the first frame glue and the second frame glue are acrylic resin, epoxy resin, acrylic resin, aromatic epoxy resin or bisphenol type ring Oxy resin.

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