Laminating method and laminating device
阅读说明:本技术 一种贴合方法及贴合装置 (Laminating method and laminating device ) 是由 强华 刘荣交 石林 吕黎 饶振华 于 2019-10-08 设计创作,主要内容包括:本发明属于显示技术领域,公开了一种贴合方法及贴合装置。本发明提供的贴合方法和贴合装置,使得在真空环境下被贴合的显示组件的两部件中的一个之上设置的液态光学胶能够在与另外一个部件接触后向四周流动蔓延,以逐渐填充两部件的结合区域,并彻底地排出两部件贴合面之间的气体,避免液态光学胶在流动时留存气泡,从而省去了常规显示组件进行贴合作业后还需要进行的脱泡程序,直接达到显示组件的使用要求,大大降低了贴合作业的成本、提高贴合作业的效率。(The invention belongs to the technical field of display and discloses a laminating method and a laminating device. According to the attaching method and the attaching device provided by the invention, the liquid optical cement arranged on one of the two parts of the attached display assembly in the vacuum environment can flow and spread around after contacting the other part, so that the bonding area of the two parts is gradually filled, the gas between the attaching surfaces of the two parts is thoroughly exhausted, and the liquid optical cement is prevented from remaining bubbles during flowing, so that a defoaming program required after the attaching operation of a conventional display assembly is omitted, the use requirement of the display assembly is directly met, the cost of the attaching operation is greatly reduced, and the efficiency of the attaching operation is improved.)
1. A bonding method for bonding a first substrate (10) and a second substrate (20) of a display module (100), wherein a bonding surface of the first substrate (10) includes a first region, and a bonding surface of the second substrate (20) includes a second region, a projection of the second region on the first substrate (10) is located within the first region, the bonding method comprising:
arranging dam rubber (1) on the periphery of the first area, wherein the dam rubber (1) is provided with a notch (11);
arranging a liquid optical cement (2) in the second area;
and enabling the first area and the second area to be opposite, attaching the first substrate (10) and the second substrate (20) in a vacuum environment, and enabling the liquid optical cement (2) to flow and fill the first area and then flow out of the gap (11).
2. The bonding method according to claim 1, wherein the liquid optical adhesive (2) disposed in the second region is a predetermined shape, and the predetermined shape has a cross-sectional area that gradually decreases from an end of the predetermined shape that is connected to the second substrate (20) to an end of the predetermined shape that is away from the bonding surface of the second substrate (20).
3. The bonding method according to claim 2, wherein the predetermined shape is a symmetrical shape having a symmetry plane perpendicular to the bonding surface of the second substrate (20), and an end of the predetermined shape facing away from the bonding surface of the second substrate (20) is in a dot shape or a line shape.
4. The bonding method according to claim 1, wherein the liquid optical glue (2) is disposed in a central region of the second region.
5. The attaching method according to claim 2, further comprising: calculating the volume of the preset shape according to the design thickness of the liquid optical cement (2) required to be arranged between the first substrate (10) and the second substrate (20), wherein the volume of the preset shape is larger than the product of the design thickness of the liquid optical cement (2) required to be arranged between the first substrate (10) and the second substrate (20) and the area of the first region.
6. The bonding method according to claim 1, wherein the dam paste (1) has a height greater than a designed thickness of a liquid optical paste (2) to be disposed between the first substrate (10) and the second substrate (20).
7. The attaching method according to claim 1, characterized in that: dam is glued (1) and is the rectangle frame, the four corners of rectangle frame have seted up breach (11) and/or the mid point department on each side of rectangle frame has seted up breach (11).
8. The bonding method according to claim 1, wherein the first substrate (10) is a display screen and the second substrate (20) is a touch screen or tempered glass.
9. A bonding apparatus for bonding a first substrate (10) and a second substrate (20) of a display module (100), wherein a bonding surface of the first substrate (10) includes a first region, a bonding surface of the second substrate (20) includes a second region, and a projection of the second region onto the first substrate (10) is located within the first region, the bonding apparatus comprising:
the first coating mechanism is used for arranging dam glue (1) on the periphery of a first area of the first substrate (10), and the dam glue (1) is provided with a notch (11);
a second coating mechanism for disposing a liquid optical cement (2) in a second region of the second substrate (20);
and the vacuum attaching mechanism is used for aligning the first area of the first substrate (10) and the second area of the second substrate (20) and attaching the first area and the second area under a vacuum environment so that the liquid optical cement (2) flows out of the gap (11) after filling the first area in a flowing manner.
10. The bonding apparatus according to claim 9, further comprising a curing mechanism for curing the liquid optical cement (2) between the first substrate (10) and the second substrate (20) after bonding.
Technical Field
The invention relates to the technical field of display, in particular to a laminating method and a laminating device.
Background
The display assembly generally includes a display screen, a touch screen, and a cover layer for protecting the display screen or the touch screen. In order to isolate dust and moisture between the display screen and the touch screen, between the touch screen and the covering layer and between the display screen and the covering layer (such as a display assembly without the touch screen), the components are required to be attached in a full-attaching mode.
Full lamination generally refers to filling a gap between two parts to be laminated with liquid optical cement. The conventional full-lamination method is to apply colloid on the lamination surface of the two laminated parts and then to compress the two parts. A large amount of bubbles are easy to remain between two attached parts in the attaching process by using the method, and the bubbles can be removed by a defoaming procedure subsequently, so that the use requirement of the display assembly is met, the attaching cost is greatly increased, and the attaching efficiency is reduced.
Disclosure of Invention
The invention aims to provide a bonding method and a bonding device, which aim to solve the problem that bubbles are easy to remain between two bonded parts in the full bonding process of the conventional display assembly.
To achieve the purpose, the invention provides the following technical scheme:
in one aspect, the present invention provides a bonding method for bonding a first substrate and a second substrate of a display module, where a bonding surface of the first substrate includes a first region, a bonding surface of the second substrate includes a second region, and a projection of the second region on the first substrate is located within the first region, the bonding method including:
arranging dam glue on the periphery of the first area, wherein the dam glue is provided with a notch;
arranging liquid optical cement in the second area;
and enabling the first area and the second area to be opposite, attaching the first substrate and the second substrate in a vacuum environment, and enabling the liquid optical cement to flow out of the notch after filling the first area.
Preferably, the liquid optical cement in the second region is a preset shape, and the sectional area of the preset shape decreases gradually from the end of the preset shape connected with the second substrate to the end of the preset shape departing from the bonding surface of the second substrate.
Preferably, the preset shape is a symmetrical shape with a symmetrical plane perpendicular to the bonding surface of the second substrate, and one end of the preset shape departing from the bonding surface of the second substrate is in a point shape or a linear shape.
Preferably, the liquid optical cement is disposed in a central region of the second region.
Preferably, the attaching method further includes: and calculating the volume of the preset body according to the design thickness of the liquid optical cement required to be arranged between the first substrate and the second substrate, wherein the volume of the preset body is larger than the product of the design thickness of the liquid optical cement required to be arranged between the first substrate and the second substrate and the area of the first region.
Preferably, the height of the dam paste is greater than the designed thickness of the liquid optical paste to be disposed between the first substrate and the second substrate.
Preferably, the dam adhesive is a rectangular frame, the notches are formed in the four corners of the rectangular frame and/or the notches are formed in the middle points of the sides of the rectangular frame.
Preferably, the first substrate is a display screen, and the second substrate is a touch screen or tempered glass.
On the other hand, the invention also provides the following technical scheme:
a laminating device is used for laminating a first substrate and a second substrate of a display assembly, wherein the laminating surface of the first substrate comprises a first area, the laminating surface of the second substrate comprises a second area, the projection of the second area on the first substrate is positioned in the first area, and the laminating device comprises:
the first coating mechanism is used for arranging dam glue on the periphery of the first area of the first substrate, and the dam glue is provided with a notch;
the second coating mechanism is used for arranging liquid optical cement in a second area of the second substrate;
and the vacuum laminating mechanism is used for aligning the first area of the first substrate with the second area of the second substrate and laminating the first area and the second area of the second substrate in a vacuum environment so as to enable the liquid optical cement to flow and fill the first area and then flow out of the notch.
Preferably, the bonding device further includes a curing mechanism, and the curing mechanism is configured to cure the liquid optical cement between the first substrate and the second substrate after bonding.
The invention has the beneficial effects that:
according to the attaching method and the attaching device provided by the invention, the liquid optical cement arranged on one of the two parts of the attached display assembly can flow and spread around after contacting the other part, so that the bonding area of the two parts is gradually filled, the gas between the attaching surfaces of the two parts is thoroughly exhausted, and the liquid optical cement is prevented from remaining bubbles during flowing, so that a defoaming program required after the attaching operation of a conventional display assembly is omitted, the use requirement of the display assembly is directly met, the cost of the attaching operation is greatly reduced, and the efficiency of the attaching operation is improved.
Drawings
FIG. 1 is a schematic diagram of a display module according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a bonding method according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a bonding method step S1 according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a bonding method step S2 according to an embodiment of the present invention;
FIG. 5 is a diagram illustrating a step S3 of a bonding method according to an embodiment of the present invention;
fig. 6 is a schematic diagram illustrating a flow state of the liquid optical cement in the bonding process in step S3 of the bonding method according to the embodiment of the invention.
In the figure:
100. a display component;
10. a first substrate; 20. a second substrate;
1. dam glue; 11. a notch; 2. and (3) liquid optical cement.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
The embodiment provides a laminating method and a laminating device aiming at the problem that bubbles are easily left between two attached parts in the full attaching process of a display assembly in the prior art, so that the bubbles are prevented from being left between the two attached parts after attaching.
A first aspect of the present embodiment is to provide a bonding method for bonding the
step S1: referring to fig. 3, a dam adhesive 1 is disposed on a periphery of a first area of a
Step S2: referring to fig. 4, a liquid
Step S3: referring to fig. 5, the
Specifically, the bonding process of the
first, the bonding surfaces of the
Subsequently, the
Then, as the
Finally, when the
By using the above bonding method, the gas can be exhausted completely during the bonding process of the
Experiments show that in the preparation step, the liquid
It is understood that the attaching method may further include calculating the volume of the predetermined shape according to the designed thickness of the liquid
Further, in the step of "disposing the dam paste 1 at the periphery of the first area of the
In a preferred embodiment, the dam adhesive 1 is a rectangular frame, and a gap 11 may be provided at the intersection of the sides of the first region of the dam adhesive 1, so that the gas at the corner of the bonding space surrounded by the
On the other hand, the invention further provides a bonding apparatus of a
The first coating mechanism is used for arranging dam glue 1 on the periphery of a first area of a
In a preferred embodiment, the bonding apparatus may further include a glue removing mechanism and a curing mechanism, wherein the glue removing mechanism is configured to remove the liquid
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
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