TWM590702U - Sealant structure - Google Patents

Abstract

A sealant structure disposed between a first substrate and a second substrate is provided. The sealant structure includes a sealant body and a retaining wall structure. The sealant body has at least one gap, and surrounds at least three sides of a glue coating area. The retaining wall structure is disposed at one side of the gap of the sealant body and extends along at least one side of the glue coating area. A guiding groove is defined between the sealant body and the retaining wall structure.

Description

Frame structure

This creation is about a frame glue structure, and especially a frame glue structure used in the display panel bonding process.

In modern life, the application of display panels is becoming more and more widespread, from common TVs, computers, and mobile phones to outdoor billboards, Augmented Reality (AR)/Virtual Reality (VR) devices, from flat panel displays to Curved display, display panel applications are everywhere.

In the prior art, Liquid Optically Clear Adhesive (LOCA, also known as water glue) has been widely used in laminating panels of various sizes. You can use liquid optical adhesive (LOCA) between the touch panel and the display panel, or between the cover glass and the touch panel, so that the two are evenly bonded to ensure the quality of the appearance.

Reference is also made to FIGS. 1A and 1B. FIG. 1A is a top view of a conventional display panel during a bonding process and FIG. 1B is a schematic cross-sectional view along line A’-A’’ of FIG. 1A. At present, the cover glass (CG) of the display and the display panel are glued with water by using frame glue 106 to fix the cover glass (CG) 104 and the liquid crystal display module (Liquid Crystal Module, LCM) 102, and then pouring liquid optical glue (LOCA) 108, the re-curing bonding method can overcome the difficulty of bonding caused by irregular bonding surfaces, but when the sealing glue 112 is used at the exhaust port, bubbles 110, overflow glue 108a and the pressure caused by the pouring glue are easy to appear The problem of uneven colloid between the cover glass (CG) 104 and the liquid crystal display module (LCM) 102 leads to poor appearance. In non-planar 3D lamination, this phenomenon is more obvious, and it can easily affect the viewing area.

In view of this, this creation provides a frame glue structure to solve the problems of bubbles, glue overflow and uneven glue caused by the pressure of glue filling in the existing lamination process.

In order to solve the above problems, the frame glue structure of the present creation includes: a frame glue, disposed between the first substrate and the second substrate, the frame glue surrounding at least three sides of the exhibition area, wherein the frame glue has at least one gap; The wall structure is arranged on one side of the notch and extends along at least one side of the rubber spreading area, wherein a diversion groove is defined between the wall structure and the frame glue.

In an embodiment of the present creation, the notch is provided on the center line of the rubber exhibition area.

In an embodiment of the present invention, the retaining wall structure is disposed outside the colloidal body.

In an embodiment of the present invention, the plastic frame includes a pair of notches, which are correspondingly disposed on opposite sides of the plastic exhibition area.

In an embodiment of the present creation, the foregoing retaining wall structure includes a pair of strip-shaped retaining walls corresponding to the outside of the notch of the colloidal body.

In an embodiment of the invention, the retaining wall structure is disposed inside the frame colloid.

In an embodiment of the present invention, the retaining wall structure includes a strip-shaped retaining wall disposed inside the notch of the colloidal body.

In an embodiment of the present invention, the retaining wall structure extends along three sides of the rubber spreading area, and the diversion grooves are defined on opposite sides of the rubber spreading area and the retaining wall structure.

In an embodiment of the present invention, the deflector defines at least an exhaust port away from the gap, and the exhaust port is adjacent to a corner of the first substrate.

In an embodiment of the present invention, at least one of the first substrate and the second substrate is curved.

In an embodiment of the present creation, the first substrate and the second substrate are a liquid crystal display module (LCM) and a cover glass (CG), respectively.

In an embodiment of the present invention, the first substrate and the second substrate are a display panel and a touch panel, respectively.

In an embodiment of the present creation, the width of the aforementioned notch is approximately between 2 mm and 10 mm.

In an embodiment of the present invention, the width of the aforementioned diversion groove is approximately between 1 mm and 5 mm.

In an embodiment of the present invention, it further includes a liquid optical glue (LOCA), which is disposed in the aforementioned frame glue structure.

In an embodiment of the present invention, the foregoing further includes a sealant, which is disposed in the diversion groove.

The creative embodiment provides the diversion groove in the frame glue structure, which not only extends the exhaust passage, but also prevents the glue from overflowing. In addition, after standing, the colloid leveling can avoid the problem of uneven colloid caused by pouring. At the same time, the diversion groove can exclude the end of the bubble filling into the diversion groove, and the diversion groove is located under the ink area, which will not affect the viewing area. This design is more significant in the 3D surface.

In order to make the above purpose, features and advantages of this creation more obvious and understandable, a few embodiments are given below, and in conjunction with the attached drawings, detailed descriptions are as follows.

The following provides various embodiments or examples. If the first component is formed on the second component in the description, it may include an embodiment in which the first and second components are in direct contact, or may include additional component formation. An embodiment between the first and second parts so that the first and second parts are not in direct contact. In addition, the authoring embodiment may use repeated element symbols in many examples. These repetitions are for simplicity and clarity purposes only, and do not represent a specific relationship between the various embodiments and/or configurations discussed.

Furthermore, spatially related terms, such as "above", "below", "above", "below", and in addition to the directions shown in the drawings, also include use or operation Different orientations of the device. When the device is turned to another orientation (rotated 90 degrees or other orientation), the relative description of the space used here can also be interpreted according to the rotated orientation.

Here, the terms “about”, “approximately” and “approximately” generally mean within 20% of a given value or range, preferably within 10%, and more preferably within 5%, or 3 Within %, or within 2%, or within 1%, or within 0.5%. It should be noted that the quantity provided in the description is an approximate quantity, that is, if there is no specific description of "about", "approximate", "approximately", "about", "approximate", "" The meaning of "approximately".

This creative embodiment provides a frame glue structure with a diversion groove to solve the problem of unevenness of the colloid caused by bubbles, glue overflow, etc., which is caused by the original sealing, which leads to poor appearance. This frame glue structure is particularly suitable for non-planar 3D lamination.

First, as shown in FIG. 2, in order to provide the sealant structure 220 in the bonding process, the first substrate 202 and the second substrate 204 are adhered and fixed, and liquid optical adhesive (LOCA) to prevent subsequent infusion (not shown) ) Spillover. The first substrate 202 and the second substrate 204 can be made of glass, plastic, metal, etc. For display devices, they can be cover glass (CG), touch panel, liquid crystal display, liquid crystal display module (LCM), etc. Wait, depending on the situation. For example, in one embodiment, the first substrate 202 is a display panel and the second substrate 204 is a touch panel. In another embodiment, the first substrate 202 is a liquid crystal display module (LCM) and the second substrate 204 is a cover glass (CG).

Continuing to refer to FIG. 2, the first substrate 202 includes a spreading area 210 and a sealant structure 220, wherein the spreading area 210 serves as a liquid optical glue (LOCA) (not shown) infusion and flow area and the sealant structure 220 serves as Prevent the area where liquid optical glue (LOCA) overflows. The aforementioned sealant structure 220 is disposed around the inner edge of the first substrate 202. In an embodiment, the spreading area of the sealant structure 220 should be larger than the functional area of the first substrate 202 to reduce the effect of the structural glue on the function of the first substrate 202. In one embodiment, the spreading area in the sealant structure 220 accounts for at least 80% of the area of the first substrate 202 to increase the bonding area of the first substrate 202 and the second substrate 204.

Figures 3A and 3B illustrate the sealant structure of the first embodiment of the present invention. FIG. 3A is a top view of the sealant structure 220 on the first substrate 202. The sealant structure 220 surrounds the edge of the first substrate 202 and the glue spreading area 210. The frame glue structure 220 may include a frame glue 222 and a retaining wall structure 224. In the first embodiment of the present creation, the colloidal body 222 only surrounds three sides of the glue spreading area 210, and thus has a notch 222a toward the fourth side. The barrier wall structure 224 is composed of three strip barrier walls 2241, one of the barrier barrier walls 2241 is located outside the gap 222a in the frame colloid 222, and the other two barrier barrier walls 2241 are respectively connected to the barrier bars The two ends of the retaining wall 2241 are arranged parallel to the outer side of the frame colloid 222, and a diversion groove 226 is defined between the frame colloid 222 and the frame colloid 222. As shown in the figure, the frame colloid 222 and the retaining wall structure 224 do not intersect. In addition, the gap d between the two ends of the frame colloid 222 and the baffle wall structure 224 is approximately between 2 mm and 10 mm, and the gap in this interval is sufficient to allow the excess optical liquid glue to flow out and a diversion groove with a buffer function can be defined 226.

Continuing to refer to FIG. 3A, two diversion grooves 226 are defined between the frame colloid 222 and the baffle wall structure 224, which are located on opposite sides of the rubber spreading area 210, which can extend the exhaust passage and also serve as a buffer for overflowing glue. Moreover, in this embodiment, the deflector 226 defines an exhaust port 226a away from the notch 222a, and the exhaust port 226a is adjacent to the corner of the first substrate 202, which facilitates the discharge of air bubbles.

Referring to FIG. 3B, FIG. 3B is a schematic cross-sectional view taken along line A'-A'' of FIG. 3A. A frame colloid 222 and a retaining wall structure 224 are disposed on the first substrate 202, wherein the first substrate 202 is flat, and the height of the frame colloid 222 and the retaining wall structure 224 are approximately the same. A deflector 226 is defined between the frame colloid 222 and the baffle wall structure 224. The aforementioned deflector 226 can not only prevent the liquid optical adhesive (LOCA) (not shown) from overflowing, but also prevent the accumulation of glue bubbles in the spreading area 210 Inside.

FIGS. 4A and 4B illustrate the sealant structure of the second embodiment of the present invention. FIG. 4A is a top view of the sealant structure 220 on the first substrate 202. The sealant structure 220 surrounds the edge of the first substrate 202 and the glue spreading area 210. The frame glue structure 220 may include a frame glue 222 and a retaining wall structure 224. In this creative embodiment, the frame colloid 222 surrounds the four sides of the glue spreading area 210 and has a gap 222a. The retaining wall structure 224 is a strip-shaped retaining wall 2241, which is located inside the notch 222a in the aforementioned frame colloid 222, and the frame colloid 222 and the retaining wall structure 224 do not intersect. In one embodiment, the aforementioned notch 222a is disposed on the centerline (not shown) of the spreading area 210. The gap d between the two ends of the strip-shaped barrier wall and the frame colloid 222 in the barrier wall structure 224 is approximately between 2 mm and 10 mm. The gap in this interval is sufficient to allow excess optical liquid glue to flow out and can be defined as having a buffer function的导流槽226.

Please refer to FIG. 4A and FIG. 4B at the same time. FIG. 4B is a schematic cross-sectional view taken along line A’-A’’ of FIG. 4A. A guiding groove 226 is defined between the frame colloid 222 and the retaining wall structure 224, which is located inside the frame colloid 222, which can extend the exhaust passage and also serve as a buffer for overflowing glue. Moreover, in this embodiment, the aforementioned notch 222a also serves as an exhaust port 226a. The exhaust port 226a is located at the highest point on the frame structure 220, which facilitates the discharge of air bubbles. Since the first substrate 202 is convex in this embodiment, the aforementioned exhaust port 226a is located at the midpoint and at the highest point when the first substrate 202 is placed flat.

Figures 5A and 5B illustrate the sealant structure of the second embodiment of the present invention. FIG. 5A is a top view of the sealant structure 220 on the first substrate 202. The sealant structure 220 surrounds the edge of the first substrate 202 and the glue spreading area 210. The frame glue structure 220 may include a frame glue 222 and a retaining wall structure 224. In this creative embodiment, the frame colloid 222 surrounds the four sides of the spreading area 210 and has a pair of notches 222a. The retaining wall structure 224 is a pair of strip-shaped retaining walls 2241, which are located outside of the notch 222a in the frame colloid 222 and are arranged in parallel. As shown in the figure, the frame colloid 222 and the retaining wall structure 224 do not intersect. The aforementioned notch 222a is disposed on the center line (not shown) of the rubber spreading area 210, and is correspondingly disposed on opposite sides of the rubber spreading area 210. In addition, the width d of the aforementioned notch 222a is approximately between 2 mm and 10 mm. The notch 222a in this width range is sufficient to allow excess optical liquid glue (not shown) to flow out and define the diversion groove 226 with a buffer function.

Continuing to refer to FIG. 5A, FIG. 5B is a schematic cross-sectional view taken along line A'-A'' of FIG. 5A. Two guiding grooves 226 are defined between the frame colloid 222 and the retaining wall structure 224, which are located outside the frame colloid 222, which can extend the exhaust passage and also serve as a buffer for overflowing glue. Moreover, in this embodiment, an exhaust port 226a is defined at the diversion groove 226 away from the notch 222a, and the exhaust port 226a is located at the highest point on the frame structure 220, which helps to expel air bubbles. Since in this embodiment, the first substrate 202 may be concave, the aforementioned exhaust port 226 a is adjacent to the corner of the first substrate 202.

After the sealant structure 220 is set on the first substrate 202, the second substrate 204 can be paired, and then the liquid optical adhesive (LOCA) (not shown) is injected from the vent 226a, so that the sealant structure is filled Liquid optical adhesive (LOCA), and then the first substrate 202 and the second substrate 204 are bonded together, and finally a sealing adhesive (not shown) is selected and disposed in the diversion groove 226 according to the type of injected liquid optical adhesive (LOCA). For example, if the injected liquid optical adhesive (LOCA) has high fluidity, frame glue is used as the sealant; if the injected liquid optical adhesive (LOCA) has low fluidity, liquid optical glue (LOCA) is used as the sealant.

For example, referring to FIG. 6A, using the sealant structure 222 on the first substrate 202 in the second embodiment (as shown in FIG. 4), after the first substrate 202 and the second substrate 204 are paired, from the notch Liquid optical glue (LOCA) 240 is poured on the opposite side of 222a. In this embodiment, the liquid optical adhesive (LOCA) 240 gradually fills the spreading area 210 from the distal end of the notch 222a until excessive liquid optical adhesive (LOCA) 240 is introduced into the diversion groove 226 toward the notch 222a, as shown in the first As shown in Figure 6B.

In addition, referring back to FIGS. 3A to 5A, the width w of the diversion groove 226 in the frame structure 220 is approximately between 1 mm and 5 mm, and less than 1 mm will reduce the buffering effect of the diversion groove, which is easy to frame An overflow occurs outside the glue structure, and greater than 5 mm will make the spreading area 210 too small, so that the joint area decreases.

In some embodiments, an ink layer (not shown) may be further disposed on the second substrate 204 so that the ink layer is between the sealant structure 220 and the second substrate 204. The above ink layer can prevent the frame glue structure 220 from being exposed, and does not affect the visible area.

As shown in FIGS. 7A and 7B, in the second embodiment (as shown in FIG. 4), after the first substrate 202 is provided with the sealant structure 220 and the second substrate 204 is provided with the ink layer 230, the first substrate 202 and the second substrate 204 are paired so that the sealant structure 220 and the ink layer 230 are interposed between the first substrate 202 and the second substrate 204. FIG. 7A is a top view of the second substrate 204. Since FIG. 7A is based on FIG. 4A and further includes an ink layer 230, the same parts as FIG. 4A are not described here.

Referring to FIG. 7A, through a partial perspective view below the ink layer 230, the sealant structure 220 under the ink area 230 can be seen, as shown in FIG. 4A. The ink layer 230 above the sealant structure 220 can completely cover the sealant structure 220, but does not affect the visible area. The liquid optical adhesive (LOCA) 240 located in the adhesive spreading area 210 bonds the first substrate 202 and the second substrate 204. Since in this embodiment, the first substrate 202 and the second substrate 204 are a liquid crystal display module (LCM) and a cover glass (CG), respectively, the configuration under the second substrate 204 can still be seen in the top view.

Referring to FIG. 7B, FIG. 7B is a schematic cross-sectional view taken along line A'-A'' of FIG. 7A. In this embodiment, both the first substrate 202 and the second substrate 204 are convex, and the height of the sealant 222 and the ink layer 230 are about the same, but it is not limited thereto. In addition, the purpose of the ink layer 230 is to shield the frame glue structure 220 underneath. The boundary of the ink layer 230 may be exactly the same as the frame glue structure 220, or it may extend toward the glue spreading area 210, on the premise of not affecting the visible area. In addition, since the sealant structure is based on Figures 4A and 4B, the process of injecting liquid optical adhesive (LOCA) 240 is the same as that shown in Figures 6A and 6B, and will not be repeated here.

The frame glue structure in this creative embodiment includes a frame glue body with a gap and a retaining wall structure on one side of the gap, and a guide groove can be defined between the frame glue body and the wall structure to extend the exhaust passage, and As a buffer for overflowing glue, its effect is more obvious in the 3D device, and it can improve the bonding yield.

The above summarizes the components of several embodiments, so that those with ordinary knowledge in the technical field to which this creation belongs can better understand the viewpoints of this creation embodiment. Those with ordinary knowledge in the technical field to which this creation belongs should understand that they can easily design or modify other processes and structures based on this creative embodiment to achieve the same purposes and/or advantages as the embodiments described herein . Those with ordinary knowledge in the technical field to which this creation belongs should also understand that such equivalent structures do not deviate from the spirit and scope of this creation, and they can do all kinds of things without violating the spirit and scope of this creation. Such changes, substitutions and replacements. Therefore, the scope of protection of this creation shall be defined as the scope of the attached patent application.

102‧‧‧ LCD display module; 104‧‧‧ Cover glass; 106‧‧‧ frame glue; 108‧‧‧ liquid optical adhesive; 108a‧‧‧ overflow glue; 110‧‧‧ bubbles 112‧‧‧ sealing glue; 202‧‧‧ First substrate; 204‧‧‧Second substrate; 210‧‧‧ Exhibition area; 220‧‧‧frame glue structure; 222‧‧‧frame colloid; 222a‧‧‧ gap; 224‧‧‧ stall wall structure; 2241‧‧‧ Strip wall; 226‧‧‧Diversion channel; 226a‧‧‧ exhaust port; 230‧‧‧ ink layer; 240‧‧‧ liquid optical adhesive; d‧‧‧ gap (width); w‧‧‧ width

The content of the disclosed embodiments can be better understood through the following detailed description in conjunction with the accompanying drawings. It should be emphasized that, according to standard industry practice, many features are not drawn to scale. In fact, for clear discussion, the size of various components may be arbitrarily enlarged or reduced. FIGS. 1A and 1B are a top view and a schematic cross-sectional view of a conventional display panel during a bonding process. FIG. 2 is a perspective view of the sealant structure and the glue spreading area shown on the first substrate and the second substrate according to the authoring embodiment. FIGS. 3A and 3B are a top view and a schematic cross-sectional view of the sealant structure shown on the first substrate according to the first embodiment of the present creation. FIGS. 4A and 4B are a top view and a schematic cross-sectional view of the sealant structure shown on the first substrate according to the second embodiment of the present creation. FIGS. 5A and 5B are a top view and a schematic cross-sectional view of the sealant structure shown on the first substrate according to the third embodiment of the present creation. FIGS. 6A and 6B are schematic diagrams illustrating the process of pouring liquid optical adhesive (LOCA) according to FIG. 4A. FIG. 7A and FIG. 7B are a top view and a schematic cross-sectional view according to the embodiment of the present invention.

202‧‧‧The first substrate

210‧‧‧ Exhibition area

220‧‧‧Frame structure

222‧‧‧Frame colloid

222a‧‧‧Notch

224‧‧‧File wall structure

2241‧‧‧strip wall

226‧‧‧Diversion channel

226a‧‧‧Exhaust

d‧‧‧Gap (width)

w‧‧‧Width

Claims (16)

A frame glue structure, including: A frame colloid disposed between a first substrate and a second substrate, the frame colloid surrounding at least three sides of a spreading area, wherein the frame colloid has at least one gap; and A retaining wall structure is disposed on one side of the notch and extends along at least one side of the rubber spreading area, wherein a diversion groove is defined between the retaining wall structure and the frame colloid. The frame rubber structure as described in item 1 of the patent application scope, wherein the gap is provided on the center line of the rubber exhibition area. The frame glue structure as described in item 1 of the patent application scope, wherein the retaining wall structure is arranged on the outside of the frame glue body. The frame rubber structure as described in item 1 of the patent application scope, wherein the frame rubber body includes a pair of notches, which are correspondingly disposed on opposite sides of the rubber spreading area. The frame rubber structure as described in item 4 of the patent application scope, wherein the retaining wall structure includes a pair of strip-shaped retaining walls corresponding to the outside of the pair of notches of the frame colloid. The frame rubber structure as described in item 1 of the patent application scope, wherein the retaining wall structure is disposed inside the frame rubber body. The frame rubber structure as described in item 1 of the patent application scope, wherein the retaining wall structure includes a strip-shaped retaining wall disposed inside the gap of the frame rubber body. The frame rubber structure as described in item 1 of the patent application scope, wherein the retaining wall structure extends along three sides of the exhibition area, and the diversion is defined on the opposite sides of the exhibition area and the retaining wall structure groove. The sealant structure as described in item 1 of the patent application scope, wherein the deflector defines at least one exhaust port away from the gap, and the exhaust port is adjacent to a corner of the first substrate. The sealant structure as described in item 1 of the patent application scope, wherein at least one of the first substrate and the second substrate is curved. The sealant structure as described in item 1 of the patent application scope, wherein the first substrate and the second substrate are a liquid crystal display module and a cover glass, respectively. The sealant structure as described in item 1 of the patent application scope, wherein the first substrate and the second substrate are a display panel and a touch panel, respectively. The frame glue structure as described in item 1 of the patent application scope, wherein the width of the notch is approximately between 2 mm and 10 mm. The frame rubber structure as described in item 1 of the patent application scope, wherein the width of the diversion groove is approximately between 1 mm and 5 mm. The frame structure described in item 1 of the patent application scope further includes a liquid optically clear adhesive (LOCA), which is disposed in the frame structure. The frame glue structure as described in item 1 of the patent application scope further includes a sealing glue, which is arranged in the diversion groove.

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