CN109445625B - Composite substrate, manufacturing method thereof and display device - Google Patents
Composite substrate, manufacturing method thereof and display device Download PDFInfo
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- CN109445625B CN109445625B CN201811160799.5A CN201811160799A CN109445625B CN 109445625 B CN109445625 B CN 109445625B CN 201811160799 A CN201811160799 A CN 201811160799A CN 109445625 B CN109445625 B CN 109445625B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04102—Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
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Abstract
The invention discloses a composite substrate, a manufacturing method thereof and a display device with the composite substrate. The composite substrate includes: the first substrate unit comprises a first substrate and a frame body arranged on the bottom surface of the first substrate, and the inner edge of the frame body encloses an accommodating cavity at the bottom of the first substrate unit; a second substrate unit disposed opposite to the first substrate unit in a first direction; the pasting main body is arranged between the bottom surface of the first substrate unit and the top surface of the second substrate unit, and at least part of the pasting main body is filled in the accommodating cavity; the frame is characterized in that the inner edge of the frame extends in a wavy curve shape on a cross section perpendicular to the first direction. According to the invention, the shape of the inner edge is set to be a wave curve shape, so that the pasting main body can be easily and completely filled in the position of the section difference formed by the inner edge, bubbles are prevented from being generated, and the appearance and the yield of the composite substrate are ensured.
Description
Technical Field
The invention relates to a composite substrate, a manufacturing method thereof and a display device with the composite substrate, and belongs to the technical field of touch display.
Background
With the progress of science and technology, digital tools such as smart phones and tablet computers are widely used, wherein a display device is an indispensable interpersonal communication interface of the tools.
In the prior art, a display device often adopts an Optically Clear Adhesive (OCA) to adhere two substrates, however, when a segment difference exists on the adhered surface of any one of the substrates due to a three-dimensional structure design, the Optically Clear Adhesive is easily adhered to the substrate, and the Optically Clear Adhesive cannot be completely filled in the segment difference, so that a gap is formed at the segment difference to form bubbles, which affects the appearance and yield of the display device.
Taking the structure of a prior art display device 10 shown in fig. 1 as an example, the display device 10 includes a cover plate 11, a panel 13, and an optically transparent adhesive 12 for bonding the cover plate 11 and the panel 13. Wherein, the surface of the cover plate 11 is printed with ink 14, the cover plate 11 is roughly divided into a non-visible area 111 with the ink 14 and a visible area 112 without the ink 14; the optically clear adhesive 12 covers the visible region 112 and the non-visible region 111.
However, since the ink 14 has a certain thickness, a step may be formed at the edge of the ink 14, and when the optically transparent adhesive 12 is attached to the cover plate 11, the optically transparent adhesive 12 may not be completely filled in the step, so that the step is easily to generate a gap to form the bubble 15, which affects the yield of the display device 10.
Disclosure of Invention
In order to solve the problem of bubbles at the level difference in the prior art, the present invention aims to provide a composite substrate, a method for manufacturing the same, and a display device having the same.
To achieve one of the above objects, an embodiment of the present invention provides a composite substrate, including:
the first substrate unit comprises a first substrate and a frame body arranged on the bottom surface of the first substrate, and the inner edge of the frame body encloses an accommodating cavity at the bottom of the first substrate unit;
a second substrate unit disposed opposite to the first substrate unit in a first direction;
the pasting main body is arranged between the bottom surface of the first substrate unit and the top surface of the second substrate unit, and at least part of the pasting main body is filled in the accommodating cavity; on a cross section perpendicular to the first direction, an inner edge of the frame extends in a wavy curve.
As a further improvement of an embodiment of the present invention, the inner edge extends obliquely outward from the bottom surface of the first substrate toward the top surface of the second substrate unit.
As a further improvement of an embodiment of the present invention, in a cross section perpendicular to the first direction, an outer edge of the frame body is rectangular, and the inner edge includes a first edge, a second edge, a third edge, and a fourth edge that are sequentially connected;
wherein the wave direction line of the first edge and the wave direction line of the third edge are both straight lines and parallel to a group of opposite edges of the outer edge; the wave direction line of the second edge and the wave direction line of the fourth edge are both straight lines and parallel to the other pair of paired edges of the outer edge.
As a further improvement of the embodiment of the present invention, any adjacent two of the first edge, the second edge, the third edge, and the fourth edge are smoothly connected by an arc.
As a further improvement of an embodiment of the invention, the first side and the third side have the same constant wavelength and/or the same constant wave height as each other, and the second side and the fourth side have the same constant wavelength and/or the same constant wave height as each other.
As a further improvement of an embodiment of the present invention, the first side and the third side are mirror-symmetrical or alternatively opposite to each other, and/or the second side and the fourth side are mirror-symmetrical or alternatively opposite to each other.
As a further improvement of an embodiment of the present invention, the first substrate unit and the second substrate unit may be both rigid structures or both flexible structures or one rigid structure and one flexible structure; the second substrate unit has a display function and/or a touch function; the frame body is provided with ink.
In order to achieve one of the above objectives, an embodiment of the present invention further provides a display device, which includes the composite substrate.
In order to achieve one of the above objects, an embodiment of the present invention further provides a method for manufacturing the composite substrate, where the method includes:
providing a first substrate unit;
attaching a first attaching surface of the film-shaped attaching body to a bottom surface of the first substrate unit by a bidirectional rolling manner, the bidirectional bonding including a second direction and a third direction perpendicular to each other and to the first direction;
the second substrate unit is bonded to the second bonding surface of the bonding main body.
As a further improvement of an embodiment of the present invention, in a cross section perpendicular to the first direction, the inner edge includes a first edge, a second edge, a third edge, and a fourth edge that are connected in sequence; wherein the wave direction line of the first side and the wave direction line of the third side are straight lines and parallel; the wave direction line of the second side and the wave direction line of the fourth side are straight lines and are perpendicular to the wave direction line of the first side;
one of the second direction and the third direction is parallel to the wave direction line of the first side, and the other of the second direction and the third direction is parallel to the wave direction line of the second side.
Compared with the prior art, the invention has the following beneficial effects: the shape of inward flange sets up to wave curve form, changes in it is in to paste the main part and fill completely the poor position department of section that the inward flange constitutes to avoid the production of the poor position department bubble of section, guarantee composite substrate's appearance quality promotes display device's yield.
Drawings
FIG. 1 is a schematic diagram of a prior art display device;
FIG. 2 is a schematic structural diagram of a composite substrate according to an embodiment of the invention;
FIG. 3 is a schematic cross-sectional view of a composite substrate according to an embodiment of the invention, the cross-sectional view being taken along line A-A of FIG. 2;
FIG. 4 is a schematic structural diagram of a first substrate according to an embodiment of the invention;
FIG. 5 is a schematic view of a method of fabricating a composite substrate according to an embodiment of the invention;
FIG. 6 is a flowchart illustrating an embodiment of a method for fabricating a composite substrate;
FIG. 7a is a schematic view of a step in the manufacturing method shown in FIG. 6;
FIG. 7b is a cross-sectional view of a structure formed at another step in the method of FIG. 6 in the thickness direction;
FIG. 8 is a flow chart of another embodiment of a method for fabricating a composite substrate according to the present invention;
FIG. 9 is a schematic view of a step in the manufacturing method shown in FIG. 8;
fig. 10 is a schematic cross-sectional view of a composite substrate according to another embodiment of the present invention.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments shown in the accompanying drawings. These embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to these embodiments are included in the scope of the present invention.
Example 1
Referring to a preferred embodiment of the present invention shown in fig. 2 to 4, the embodiment provides a composite substrate 100. The composite substrate 100 includes a first substrate unit 20, a second substrate unit 40, and a pasting body 30. The first substrate unit 20 and the second substrate unit 40 are disposed opposite to each other in the first direction.
For clarity of description of the positions and directions described in the present application, the first direction is defined as a thickness direction with reference to the relative positions of the first substrate unit 20 and the second substrate unit 40, wherein the direction from the first substrate unit 20 to the second substrate unit 40 (see the cutting head d in the figure) is defined as "down", whereas the direction from the second substrate unit 40 to the first substrate unit 20 (see the cutting head u in the figure) is defined as "up".
The first substrate unit 20 includes a first substrate 21 and a frame 22 located below the first substrate 21. Specifically, the frame 22 is disposed on the bottom surface of the first substrate 21, and the inner edge 221 of the frame encloses a receiving cavity at the bottom of the first substrate unit 20, that is, the frame 22 is at least partially higher than the bottom surface of the first substrate 21 in the thickness direction, in this embodiment, the bottom surface of the first substrate 21 is a flat surface, and the whole frame 22 is higher than the bottom surface of the first substrate 21. Of course, in other embodiments, the bottom surface of the first substrate 21 may also be configured as a non-flat three-dimensional structure (e.g., step-shaped), and only a portion of the frame 22 is higher than the bottom surface of the first substrate 21.
Referring to fig. 3, the first substrate 21 includes a first partition 211 on which the frame body 22 is disposed on a bottom surface thereof and a second partition 212 on which the frame body 22 is not disposed on a bottom surface thereof, and a bottom surface of the second partition 212 is exposed to the receiving cavity. The bottom surface of the first substrate unit 20 includes the bottom surface of the second partition 212 and the bottom surface of the frame 22, the bottom surface of the first substrate unit 20 is three-dimensional, and a step is formed at the inner edge 221.
The paste body 30 is disposed between the bottom surface of the first substrate unit 20 and the top surface of the second substrate unit 40, and the composite substrate 100 is configured to fix the first substrate unit 20 and the second substrate unit 40 together by the paste body 30.
The pasting body 30 may be provided with an optically transparent adhesive, which is at least partially filled in the accommodating cavity surrounded by the inner edge 221 of the frame 22. In the present embodiment, the pasting body 30 generally includes a first portion 31 filled in the accommodating cavity and a second portion 32 not filled in the accommodating cavity according to the positional relationship with the frame 22. Specifically, the frame 22 surrounds the first portion 31, and the two are arranged side by side to form a single-layer structure; the second portion 32 is located below the first portion 31 and the frame body 22, and is stacked with the single-layer structure in the thickness direction. Of course, in other embodiments, the pasting body 30 may eliminate the second portion 32 and leave only the first portion 31, i.e. the pasting body 30 is entirely located inside the containing cavity.
In the present application, referring to fig. 4, in a cross section perpendicular to the thickness direction, the inner edge 221 of the frame body 22 extends in a wavy curve, that is, the boundary between the frame body 22 and the first portion 31 extends in a wavy curve. In this way, by optimizing the shape of the inner edge 221 of the frame 22, the pasting body 30 is more easily and completely filled in the step position formed by the inner edge 221 during and after the manufacturing of the composite substrate 100, thereby avoiding the generation of bubbles at the step position, ensuring the appearance quality of the product, and improving the yield of the product.
Further, in a cross section perpendicular to the thickness direction, the shape defined by the wave line of the inner edge 221 substantially conforms to the shape of the outer edge of the frame body 22. For example, the outer edge of the frame 22 may be configured as a circle, an ellipse, a triangle, a quadrangle, other polygons, etc.; correspondingly, the shape defined by the wave lines of the inner edge 221 is also circular, elliptical, triangular, quadrilateral, other polygonal shapes, and the like. Therefore, the appearance of the composite substrate 100 is improved, and in the manufacturing process of the composite substrate 100, the general position angle of the inner edge 221 of the frame 22 can be known by observing the outer edge of the frame 22, so that the positioning and the operation are convenient, and the appearance quality and the yield of the manufactured composite substrate 100 are improved.
Referring to fig. 4, in the present embodiment, the outer edge of the frame body 22 is preferably rectangular, and correspondingly, the inner edge 221 is also substantially rectangular in shape defined by its wave lines.
Specifically, the inner edge 221 includes a first side 2211, a second side 2212, a third side 2213, and a fourth side 2214 connected in sequence. The wave direction line p1 of the first side 2211 and the wave direction line p3 of the third side 2213 are both straight lines and parallel to each other; similarly, the wave direction line p2 of the second side 2212 and the wave direction line p4 of the fourth side 2214 are all straight and parallel to each other. And, the wave direction line p1 of the first side 2211 is perpendicular to the wave direction line p2 of the second side 2212.
Preferably, the wave direction line p1 of the first side 2211 and the wave direction line p3 of the third side 2213 are parallel to a set of opposite sides of the outer edge of the frame 22; the wave direction line p2 of the second side 2212 and the wave direction line p4 of the fourth side 2214 are parallel to the other pair of edges of the outer edge of the frame 22, so that the aesthetic degree of the composite substrate 100 is improved, and the operation and positioning are convenient during the manufacturing process of the composite substrate 100, for example, when a manufacturing method described later is adopted, so that the operation is convenient and the appearance quality and the yield of the composite substrate 100 are ensured.
Further, first side 2211 and third side 2213 are disposed opposite to each other and preferably mirror symmetric, that is, the peak of first side 2211 is opposite to the peak of third side 2213, and the trough of first side 2211 is opposite to the trough of third side 2213; of course, in other embodiments, the first and third sides 2211 and 2213 can also be arranged with the peaks and troughs of each other staggered opposite, i.e., the peaks of the first side 2211 are opposite the troughs of the third side 2213, and the troughs of the first side 2211 are opposite the peaks of the third side 2213; alternatively, the two methods are not limited to the above two methods, and other relative arrangements may be adopted.
Similarly, the second side 2212 and the fourth side 2214 are disposed opposite and preferably mirror-symmetrical, i.e., the peak of the second side 2212 is opposite to the peak of the fourth side 2214, and the valley of the second side 2212 is opposite to the valley of the fourth side 2214; of course, in other embodiments, the second side 2212 and the fourth side 2214 may also be arranged with the peaks and troughs of each other staggered, i.e., the peaks of the second side 2212 are opposite to the troughs of the fourth side 2214, and the troughs of the second side 2212 are opposite to the peaks of the fourth side 2214; alternatively, the two methods are not limited to the above two methods, and other relative arrangements may be adopted.
Further, any adjacent two of the first side 2211, the second side 2212, the third side 2213 and the fourth side 2214 are smoothly connected through an arc line, so that the pasting main body 30 is easier to completely fill in the manufacturing process and the manufacturing completion of the composite substrate 100, bubbles are avoided, the appearance quality of the composite substrate 100 is ensured, and the yield of products is improved.
Further, in the present embodiment, the first side 2211 and the third side 2213 are set to have the same constant wavelength λ 1 as each other, and the second side 2212 and the fourth side 2214 are set to have the same constant wavelength λ 2 as each other. In this way, the manufacturing and molding of the frame 22 are facilitated, the molding equipment (such as a screen in the following exemplary manufacturing method) of the frame 22 is simplified, and the structure of the composite substrate 100 is more beautiful. Of course, without limitation, it is preferable that the first, third, second, and fourth sides 2211, 2213, 2212, 2214 all have the same constant wavelength, or that the first, third, second, and fourth sides 2211, 2213, 2212, 2214 have respective constant wavelengths but differ from each other, or that the first, third, second, and fourth sides 2211, 2213, 2212, 2214 do not have constant wavelengths, for example.
Further, in the present embodiment, the first side 2211 and the third side 2213 are set to have the same constant wave height H1 as each other, and the second side 2212 and the fourth side 2214 are set to have the same constant wave height H2 as each other. In this way, the manufacturing and molding of the frame 22 are facilitated, the molding equipment (such as a screen in the following exemplary manufacturing method) of the frame 22 is simplified, and the structure of the composite substrate 100 is more beautiful. Of course, without limitation, for example, it is preferable that the first side 2211, the third side 2213, the second side 2212, and the fourth side 2214 all have the same constant wave height, or that the first side 2211, the third side 2213, the second side 2212, and the fourth side 2214 have different respective constant wave heights but different wave heights from one another, or that the first side 2211, the third side 2213, the second side 2212, and the fourth side 2214 do not have constant wave heights.
Further, in the present embodiment, referring to fig. 2, the inner edge 211 extends in the thickness direction from the bottom surface of the first substrate 21 toward the top surface of the second substrate unit 40, that is, the inner edge 211 is perpendicular to the bottom surface of the first substrate 21.
Further, in the embodiment, the first substrate 21 and the second substrate unit 40 are both configured to be flexible structures, accordingly, the composite substrate 100 is a flexible structure, at a certain time, the composite substrate 100 has a planar shape as shown in fig. 2 to 3, at another certain time, a part or all of the composite substrate 100 may be bent into a curved shape, and in practical implementation, the curved shape of the composite substrate 100 may be any curved surface according to design requirements of an actual product. Of course, the first substrate 21 and the second substrate unit 40 may be provided such that only one of them is provided as a flexible structure (i.e., one is a rigid structure and the other is a flexible structure), or both are rigid structures.
In addition, the present embodiment also provides a display device having the composite substrate 100, and similarly, the display device has excellent performance of the composite substrate 100. For example, by optimizing the shape of the inner edge 221 of the frame 22, the pasting body 30 can be more easily and completely filled in the step position formed by the inner edge 221 during or after the manufacturing of the composite substrate 100, thereby avoiding the generation of bubbles, improving the yield of the display device, and improving the appearance quality of the display device.
Further, the first substrate 21 may be provided as a glass cover plate, a top surface of which constitutes an outer surface of the display device, the top surface of which can be in contact with a user during use of the display device, and which can protect other components of the display device (e.g., the second substrate unit 40).
The frame 22 is made of ink and is formed near the peripheral edge of the glass cover plate to shield light. Correspondingly, the first sub-area 211 provided with the ink defines a light-shielding area (or non-visible area) of the display device, and the second sub-area 212 not provided with the ink defines a light-transmitting area (or visible area) of the display device.
The second substrate unit 40 is configured to have a display function and/or a touch function. In practical implementation, the second substrate unit 40 may be only one substrate with a display function and/or a touch function; alternatively, the second substrate unit 40 may include a double-layer substrate with a display function, for example, an array substrate and a color filter substrate; alternatively, the second substrate unit 40 may include a double-layer substrate (for example, including an array substrate and a color film substrate) having a display function and a touch layer embedded in or externally hung on the double-layer substrate, so that the second substrate unit 40 has both a touch function and a display function, and further description is omitted here for other cases.
Further, referring to fig. 5, an embodiment of the invention further provides a method for manufacturing the composite substrate 100, but the method for manufacturing the composite substrate 100 is not limited thereto. In this embodiment, the manufacturing method includes the steps of:
a step of providing a first substrate unit 20;
a step of attaching the first attaching surface 301 of the film-like attaching body 30 to the bottom surface of the first substrate unit 20 by a bi-directional rolling manner, the bi-direction including a second direction and a third direction perpendicular to each other and both perpendicular to the thickness direction;
the second substrate unit 40 is bonded to the second bonding surface 302 of the bonding body 30.
In this way, the bonding body 30 is rolled in two directions, so that the bonding body 30 flows rapidly along the inner edge 221 of the frame 22, and is more easily and completely filled in the step difference position formed by the inner edge 221, thereby avoiding the generation of bubbles and ensuring the appearance quality and yield of the composite substrate 100.
Wherein, preferably, one of the second direction h and the third direction z is parallel to the wave direction line p1 of the first side 2211, and the other of the second direction h and the third direction z is parallel to the wave direction line p2 of the second side 2212. This facilitates the rapid flow of the pasting body 30 along the inner edge 221 of the frame 22, and makes it easier for the pasting body 30 to completely fill the stepped portion formed by the inner edge 221.
It should be noted that, among the above three steps in the manufacturing method, the step of providing the first substrate unit 20 is completed prior to the step of attaching the pasting main body 30 and the first substrate unit 20, and besides, there is no specific order limitation between the three steps, that is, there are various specific implementation orders.
For example: first, a first substrate unit 20 is provided, a pasting body 30 and the first substrate unit 20 are attached, and a pasting body 30 and a second substrate unit 40 are attached; or, the second way, first providing the first substrate unit 20, then attaching the pasting body 30 and the second substrate unit 40, and finally attaching the pasting body 30 and the first substrate unit 20; or, third, the pasting body 30 and the second substrate unit 40 are firstly pasted, then the first substrate unit 20 is provided, and finally the pasting body 30 and the first substrate unit 20 are pasted; or, fourth, the step of attaching the pasting main body 30 and the second substrate unit 40, the step of providing the first substrate unit 20 are performed simultaneously, and finally the pasting main body 30 and the first substrate unit 20 are attached; of course, besides the above-listed four implementation sequences, there are other possible implementation sequences, which are not described herein again.
The method of fabricating the composite substrate 100 is described in further detail with reference to one embodiment shown in fig. 6-7 b.
Step of providing a first substrate unit 20, specifically exemplified by:
providing a glass cover plate as a first substrate 21; printing a plurality of layers of printing ink on the glass cover plate by adopting a screen printing plate, wherein the plurality of layers of printing ink form a frame body 22; thereby obtaining a first substrate unit 20;
the non-visual area is formed by an area printed with a plurality of layers of printing ink on the glass cover plate, and the visual area is formed by an area not printed with the printing ink on the glass cover plate; correspondingly, the screen printing plate comprises a middle closed area and a hollowed-out area located around the closed area, the closed area corresponds to the visual area, the hollowed-out area corresponds to the visual area, and fine through holes which are dense and hemp are arranged in the hollowed-out area. During printing, the ink is printed on the glass cover plate through the through hole;
the intersection of the hollowed-out area and the closed area is approximately wave-shaped, so that the inner edge 221 of the ink printed on the glass cover plate is correspondingly wave-shaped.
Attaching the first attaching surface 301 of the film-like attaching body 30 to the bottom surface of the first substrate unit 20 by a bidirectional rolling method, specifically exemplified by:
referring to fig. 7a, in the present embodiment, a side surface of the first substrate unit 20 where the ink is located defines a bottom surface of the first substrate unit 20; attaching a first pasting surface 301 of a film-like optically transparent adhesive (as a pasting body 30) on the bottom surface of the first substrate unit 20; the roller 200 is used to roll the optical transparent adhesive along the second direction h, and then the roller 200 is used to roll the optical transparent adhesive along the third direction z, so that the optical transparent adhesive flows rapidly along the inner edge 221 of the ink, and the first pasting surface 301 is pasted on the bottom surface of the first substrate unit 20, and the structure formed in this step is shown in fig. 7 b.
A step of attaching the second substrate unit 40 to the second attaching surface 302 of the attaching body 30, specifically exemplified by:
referring to fig. 7b, the second bonding surface 302 of the optically transparent adhesive is exposed to the outside, and the second substrate unit 40 is bonded to the second bonding surface 302, during the bonding process, the roller 200 may be used to roll the second substrate unit 40 to remove the air between the second substrate unit 40 and the optically transparent adhesive, so as to obtain the composite substrate 100. Of course, the composite substrate 100 may be further subjected to pressure deaeration and UV curing on the optical transparent adhesive, which will not be described in detail.
Compared with the prior art, the embodiment has the following beneficial effects: the shape of the inner edge 221 of the frame 22 is set to be a wave curve, and in the manufacturing process of the composite substrate 100, the pasting main body 30 and the first substrate unit 20 can be attached by adopting a bidirectional rolling manner, so that the pasting main body 30 is easier to be completely filled in the step position formed by the inner edge 221, bubbles at the step position are avoided, the appearance quality of the composite substrate 100 is ensured, and the yield of the display device is improved.
Example 2
Referring to the embodiments of fig. 8-9, which illustrate another embodiment of the method for manufacturing the composite substrate 100, it is noted that the present embodiment includes many features that are the same as or similar to those of embodiment 1. For the sake of brevity, detailed descriptions of many features that are the same or similar are omitted herein, and like reference numerals used in these illustrations and descriptions represent the same or similar components.
This example differs from example 1 in that: in the manufacturing process of the composite substrate 100, the step of attaching the pasting body 30 and the second substrate unit 40 precedes the step of attaching the pasting body 30 and the first substrate unit 20.
Specifically, the second pasting surface 302 of the film-shaped optical transparent adhesive is pasted on the second substrate unit 40, and during the pasting process, the roller 200 may be used to roll the second substrate unit 40 to drive off the air between the second substrate unit 40 and the optical transparent adhesive;
while the above attaching process is performed, the step of providing the first substrate unit 20 may be performed synchronously, for example, a plurality of layers of ink are printed on the glass cover plate by using a screen printing plate;
thereafter, the optically transparent adhesive attached to the second substrate unit 40 is attached to the bottom surface of the first substrate unit 20; referring to fig. 9, the roller 200 is used to roll the optically transparent adhesive along the second direction h, and then the roller 200 is used to roll the optically transparent adhesive along the third direction z, so that the optically transparent adhesive flows rapidly along the inner edge 221 of the ink, and the first adhesive surface 301 is attached to the bottom surface of the first substrate unit 20, thereby manufacturing the composite substrate 100.
Compared with the prior art, the embodiment also has the following beneficial effects: the shape of the inner edge 221 of the frame 22 is set to be a wave curve, and in the manufacturing process of the composite substrate 100, the pasting main body 30 and the first substrate unit 20 can be attached by adopting a bidirectional rolling manner, so that the pasting main body 30 is easier to be completely filled in the step position formed by the inner edge 221, bubbles at the step position are avoided, the appearance quality of the composite substrate 100 is ensured, and the yield of the display device is improved.
Example 3
Referring to the embodiment shown in fig. 10, which illustrates another specific structure of the composite substrate 100, it is noted that the present embodiment includes many features that are the same as or similar to those of embodiment 1. For the sake of brevity, detailed descriptions of many features that are the same or similar are omitted herein, and like reference numerals used in these illustrations and descriptions represent the same or similar components.
This example differs from example 1 in that: in a cross-sectional view in the thickness direction, the inner edge 221' of the frame 22 extends in the direction.
Specifically, the inner edge 221 'of the frame 22 extends obliquely outward from the bottom surface of the first substrate 21 toward the top surface of the second substrate unit 40, that is, the accommodating cavity surrounded by the inner edge 221' flares away from the bottom surface of the first substrate 21.
Compared with the prior art, the embodiment also has the following beneficial effects:
the shape of the inner edge 221 'of the frame 22 is set to be a wave curve, and in the manufacturing process of the composite substrate 100, the pasting main body 30 and the first substrate unit 20 can be attached by adopting a bidirectional rolling manner, so that the pasting main body 30 is easier to be completely filled in the step difference position formed by the inner edge 221', bubbles at the step difference position are avoided, the appearance quality of the composite substrate 100 is ensured, and the yield of the display device is improved;
compared with embodiment 1, the composite substrate 100 of the present embodiment has better filling effect at the level difference position formed by the inner edge 221' of the pasting main body 30 than that of embodiment 1, which is convenient for air to discharge and avoid air bubbles, and better transmittance of the composite substrate 100 and the display device.
It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.
Claims (9)
1. A composite substrate, the composite substrate comprising:
the first substrate unit comprises a first substrate and a frame body arranged on the bottom surface of the first substrate, and the inner edge of the frame body encloses an accommodating cavity at the bottom of the first substrate unit;
a second substrate unit disposed opposite to the first substrate unit in a first direction;
the pasting main body is arranged between the bottom surface of the first substrate unit and the top surface of the second substrate unit, and at least part of the pasting main body is filled in the accommodating cavity;
the frame is characterized in that on any cross section vertical to the first direction, the inner edge of the frame extends in a wave curve shape, and on any two cross sections vertical to the first direction, the inner edge of the frame is the same in shape and the wave crest of the wave curve is corresponding to that of the wave curve; and the inner edge extends obliquely outward from the bottom surface of the first substrate toward the top surface of the second substrate unit.
2. The composite substrate according to claim 1, wherein, in a cross section perpendicular to the first direction, an outer edge of the frame body is rectangular, and the inner edge includes a first edge, a second edge, a third edge, and a fourth edge connected in this order;
wherein the wave direction line of the first edge and the wave direction line of the third edge are both straight lines and parallel to a group of opposite edges of the outer edge; the wave direction line of the second edge and the wave direction line of the fourth edge are both straight lines and parallel to the other pair of paired edges of the outer edge.
3. The composite substrate of claim 2, wherein any adjacent two of the first edge, the second edge, the third edge, and the fourth edge are smoothly connected by an arc.
4. The composite substrate of claim 2, wherein the first edge and the third edge have the same constant wavelength and/or the same constant wave height as each other, and the second edge and the fourth edge have the same constant wavelength and/or the same constant wave height as each other.
5. The composite substrate of claim 2, wherein the first sides and the third sides are mirror symmetric or staggered relative to each other, and/or the second sides and the fourth sides are mirror symmetric or staggered relative to each other.
6. The composite substrate of claim 1, wherein the first substrate unit and the second substrate unit are both rigid structures or both flexible structures or one rigid structure and one flexible structure; the second substrate unit has a display function and/or a touch function; the frame body is provided with ink.
7. A display device comprising the composite substrate according to any one of claims 1 to 6.
8. A method of manufacturing a composite substrate according to any one of claims 1 to 6, comprising the steps of:
providing a first substrate unit;
attaching a first attaching surface of the film-shaped attaching body to the bottom surface of the first substrate unit by a bidirectional rolling manner, wherein the bidirectional attaching surface comprises a second direction and a third direction which are perpendicular to each other and perpendicular to the first direction;
the second substrate unit is bonded to the second bonding surface of the bonding main body.
9. The method according to claim 8, wherein the inner edge includes a first edge, a second edge, a third edge, and a fourth edge connected in this order in a cross section perpendicular to the first direction; wherein the wave direction line of the first side and the wave direction line of the third side are straight lines and parallel; the wave direction line of the second side and the wave direction line of the fourth side are straight lines and are perpendicular to the wave direction line of the first side;
one of the second direction and the third direction is parallel to the wave direction line of the first side, and the other of the second direction and the third direction is parallel to the wave direction line of the second side.
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| CN201811160799.5A CN109445625B (en) | 2018-09-30 | 2018-09-30 | Composite substrate, manufacturing method thereof and display device |
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| CN106406596A (en) * | 2015-07-29 | 2017-02-15 | 达鸿先进科技股份有限公司 | Touch panel |
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| JP5252431B2 (en) * | 2008-11-06 | 2013-07-31 | 株式会社ジャパンディスプレイウェスト | Touch panel device, electro-optical device, and electronic device |
| US20120161186A1 (en) * | 2009-10-29 | 2012-06-28 | Kyocera Corporation | Light-emitting device |
| CN103331986B (en) * | 2013-06-14 | 2015-09-09 | 业成光电（深圳）有限公司 | There is the electronic installation of protective layer |
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| CN106406596A (en) * | 2015-07-29 | 2017-02-15 | 达鸿先进科技股份有限公司 | Touch panel |
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Application publication date: 20190308 Assignee: YUNGU (GU'AN) TECHNOLOGY Co.,Ltd.|BAZHOU YUNGU ELECTRONIC TECHNOLOGY Co.,Ltd.|KUNSHAN NEW FLAT PANEL DISPLAY TECHNOLOGY CENTER Co.,Ltd. Assignor: KUNSHAN GO-VISIONOX OPTO-ELECTRONICS Co.,Ltd. Contract record no.: X2019990000156 Denomination of invention: Composite substrate, manufacturing method thereof and display device License type: Common License Record date: 20191030 |
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Effective date of registration: 20191209 Address after: No. 2 Xiangshan Avenue, Yongning Street, Zengcheng District, Guangzhou, Guangdong province (the core of Zengcheng economic and Technological Development Zone) Applicant after: Guangzhou Guoxian Technology Co.,Ltd. Address before: 215300, No. 1, Longteng Road, Kunshan Development Zone, Jiangsu, Suzhou, 4 Applicant before: KUNSHAN GO-VISIONOX OPTO-ELECTRONICS Co.,Ltd. |
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