CN107340652B - Packaging adhesive, backlight module and display device - Google Patents
Packaging adhesive, backlight module and display device Download PDFInfo
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- CN107340652B CN107340652B CN201710812694.2A CN201710812694A CN107340652B CN 107340652 B CN107340652 B CN 107340652B CN 201710812694 A CN201710812694 A CN 201710812694A CN 107340652 B CN107340652 B CN 107340652B
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- adhesive
- backlight module
- adhesive tape
- frame
- tape
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1339—Gaskets; Spacers; Sealing of cells
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133608—Direct backlight including particular frames or supporting means
Abstract
The invention discloses a packaging adhesive, a backlight module and a display device. This packaging adhesive includes: the adhesive tape comprises a first adhesive tape and a second adhesive tape which are stacked, wherein the first adhesive tape and the second adhesive tape are equal in thickness, the first adhesive tape comprises a first base material and two first adhesive surfaces distributed on two sides of the first base material, the second adhesive tape comprises a second base material and a second adhesive surface, and the first adhesive tape is arranged on one side, far away from the second adhesive surface, of the second adhesive tape. The packaging adhesive is used for connecting the backlight module and the display panel, so that the problems of wrinkling and light leakage of the backlight module can be solved, and the quality and the yield of the display are improved.
Description
Technical Field
The invention relates to the field of liquid crystal display, in particular to packaging adhesive, a backlight module and a display device.
Background
Liquid Crystal Displays (LCDs) have the characteristics of small size, low power consumption, no radiation, etc., have been rapidly developed in recent years, and have a dominant position in the current flat panel display market. Since the lcd is a non-emissive display device, the display function can be achieved only by the backlight module. The backlight module comprises a light source, a light guide plate, an optical film, a plastic frame and the like, and provides sufficient brightness and a light source with uniform distribution for the display panel, so that the display panel can normally display images. The frame pasting structure for connecting the backlight module and the display panel has an integral structure and a sectional structure, so that the connection of the backlight module and the display panel is realized, and the display function of the liquid crystal display is further realized.
However, the current packaging adhesive, backlight module and display device for forming the frame-mounted structure still need to be improved.
Disclosure of Invention
The present invention is based on the discovery and recognition by the inventors of the following facts and problems:
at present, the liquid crystal display has the problems of poor quality and low yield. The inventors of the present invention have conducted extensive studies and have found that this is mainly caused by the wrinkling of the backlight module and the light leakage. Specifically, the frame-attaching structure for connecting the backlight module and the display panel in the backlight module is generally of an integral structure or a sectional structure. The integral frame pasting structure can stick the film material (such as a diffusion sheet) below the integral frame pasting structure due to the structure of the glue layer, and the film material can be pulled when a reliability experiment is carried out, so that the film material is wrinkled. The sectional frame pasting structure does not limit the displacement of the film material below the sectional frame pasting structure because the sectional frame pasting structure carries out sectional processing on the frame pasting structure, but the backlight generated by the backlight source generates a high-brightness light leakage phenomenon at the notch. Therefore, the conventional integral and segmented frame-mounted structures all affect the connection between the backlight module and the display panel, and further affect the quality and yield of the liquid crystal display.
The present invention aims to alleviate or solve at least to some extent at least one of the above mentioned problems.
In one aspect of the invention, an encapsulant is provided. This packaging adhesive includes: the adhesive tape comprises a first adhesive tape and a second adhesive tape which are stacked, wherein the first adhesive tape and the second adhesive tape are equal in thickness, the first adhesive tape comprises a first base material and two first adhesive surfaces distributed on two sides of the first base material, the second adhesive tape comprises a second base material and a second adhesive surface, and the first adhesive tape is arranged on one side, far away from the second adhesive surface, of the second adhesive tape. The packaging adhesive is used for connecting the backlight module and the display panel, so that the problems of wrinkling and light leakage of the backlight module can be solved, and the quality and the yield of the display are improved.
According to an embodiment of the invention, the first substrate and the second substrate each independently comprise at least one of PET and fibers. Thus, the packaging adhesive can be formed from a wide variety of materials.
According to the embodiment of the invention, the first adhesive tape comprises a first adhesive layer, the first adhesive layer is arranged on two sides of the first base material, and the first adhesive surface is formed by the first adhesive layer. Thereby, the first tape can be constituted.
According to an embodiment of the invention, the second adhesive tape comprises a second adhesive layer, the second adhesive layer being arranged on the second substrate, the second adhesive side being constituted by the second adhesive layer. Thereby, the second tape can be constituted.
In another aspect of the present invention, a backlight module is provided. According to an embodiment of the present invention, the backlight module includes: a backlight module substrate; and the frame paste structure is arranged on the backlight module substrate and comprises the packaging adhesive. Therefore, the problems of wrinkling and light leakage of the backlight module can be solved.
According to the embodiment of the invention, in the frame pasting structure, one of any two adjacent edges is arranged on the backlight module substrate through the first adhesive tape, and the other edge is arranged on the backlight module substrate through the second adhesive tape. Therefore, the frame pasting structure capable of solving the problems of wrinkling and light leakage of the backlight module can be formed.
According to the embodiment of the invention, a gap is arranged between two adjacent edges of the frame and sticker structure, and at the gap, the edges of the frame and sticker structure have a step structure, and the step structure is formed by the first adhesive tape or the second adhesive tape which is exposed outside. A gap is reserved in the frame pasting structure, so that the backlight module can be prevented from wrinkling.
According to an embodiment of the present invention, the frame attachment structure further includes: the connecting parts are arranged on two adjacent two sides of the frame pasting structure on the step structures, and the connecting parts cover the gaps. Therefore, light leakage of the backlight module can be prevented.
According to an embodiment of the present invention, the connecting portion is constituted by at least one of a light blocking layer and the second tape. Therefore, light leakage of the backlight module can be further prevented.
In another aspect of the present invention, a display device is provided. According to an embodiment of the present invention, the display device includes the backlight module described above, so that the display device has all the features and advantages of the backlight module described above, and further description is omitted here. In general, the display device has higher quality and yield.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of a package adhesive according to an embodiment of the invention;
FIG. 2 is a schematic structural diagram of a backlight module according to an embodiment of the invention;
FIG. 3 is a schematic top view of a frame and paste structure of the prior art;
FIG. 4 shows a schematic top view of another prior art frame and tile construction;
FIG. 5 shows a schematic top view of a frame and tile structure according to one embodiment of the invention;
FIG. 6 is a schematic diagram of a package adhesive according to an embodiment of the invention;
FIG. 7 shows a schematic cross-sectional view of portion A of FIG. 5 in accordance with one embodiment of the present invention; and
fig. 8 shows a schematic cross-sectional view of portion a of fig. 5 in accordance with another embodiment of the present invention.
Description of reference numerals:
100: a first adhesive tape; 110: a first adhesive surface; 120: a first substrate; 200: a second tape; 210: a second adhesive surface; 220: a second substrate; 300: a connecting portion; 1000: a frame pasting structure; 1100: a first side; 1200: a second edge; 2000: a backlight module substrate.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In one aspect of the invention, an encapsulant is provided. According to an embodiment of the present invention, referring to fig. 1, the packaging adhesive includes: the first tape 100 and the second tape 200 have the same thickness, and the first tape 100 and the second tape 200 have the same thickness. The first tape 100 includes a first substrate 120 and two first adhesive surfaces 110, wherein the first adhesive surfaces 110 are disposed on two sides of the first substrate 120. The second adhesive tape 200 includes a second substrate 220 and a second adhesive surface 210, wherein the second adhesive surface 210 is disposed on one side of the second substrate 220. According to the embodiment of the present invention, the first tape 100 and the second tape 200 of the packaging adhesive are stacked, and the first tape 100 is disposed on the side of the second tape 200 away from the second adhesive surface 210. The packaging adhesive is used for connecting the backlight module and the display panel, so that the problems of wrinkling and light leakage of the backlight module can be solved, and the quality and the yield of the display are improved.
The following describes each structure of the packaging adhesive in detail according to a specific embodiment of the present invention:
the order of disposing the first adhesive tape and the second adhesive tape is not particularly limited as long as the first adhesive tape is disposed on the side of the second adhesive tape away from the second adhesive surface, and the skilled person can design the adhesive tape according to specific situations. For example, according to an embodiment of the present invention, referring to fig. 1, a first tape 100 is disposed over a second tape 200. Therefore, the upper surface and the lower surface of the packaging adhesive are both sticky surfaces, and the connection function can be realized.
The material for the base material constituting the sealing compound is not particularly limited, and can be selected by those skilled in the art according to the circumstances. For example, according to an embodiment of the present invention, the first substrate 120 and the second substrate 220 may be respectively and independently composed of at least one of PET and fiber. Thus, the packaging adhesive can be formed from a wide variety of materials.
According to an embodiment of the present invention, the adhesive surface of the packaging adhesive may be formed by an adhesive layer. In particular, the first adhesive surface 110 may be formed by a first layer of adhesive and the second adhesive surface 210 may be formed by a second layer of adhesive. The specific material for the subbing layer is not particularly limited, and may be selected by those skilled in the art according to the specific circumstances. For example, according to an embodiment of the present invention, the glue layer may be composed of an optical glue. Thus, according to an embodiment of the present invention, the first adhesive tape 100 may include a first adhesive layer disposed on both sides of the first substrate 120, and the second adhesive tape 200 may include a second adhesive layer disposed on one side of the second substrate 220. The first adhesive tape and the second adhesive tape are made of the materials with wide sources, so that the packaging adhesive is formed, and the packaging adhesive has low cost. Therefore, the adhesive step or the non-adhesive step can be manufactured at the tail end of the packaging adhesive by controlling the lengths of the first adhesive layer and the second adhesive layer. Therefore, when the frame pasting structure for the backlight module is used, the frame pasting structure can have a gap and a light blocking structure, and therefore the problems of wrinkling and light leakage of the backlight module are solved.
In another aspect of the present invention, a backlight module is provided. According to an embodiment of the present invention, referring to fig. 2, the backlight module includes: a backlight module substrate 2000 and a frame structure 1000. The frame paste structure 1000 is disposed on the backlight module substrate 2000, and the frame paste structure 1000 includes the aforementioned package adhesive. Therefore, the frame paste structure has all the features and advantages of the packaging adhesive described above, and will not be described herein again. Generally speaking, the frame pasting structure can solve the problems of wrinkling and light leakage of the backlight module, thereby improving the quality and yield of the display device.
For ease of understanding, the operation principle of the frame paste structure according to the embodiment of the present invention is first briefly described below:
as mentioned above, the frame attaching structure for connecting the backlight module and the display panel in the prior art is divided into an integral structure and a sectional structure. In the integral frame structure, referring to fig. 3, since the adhesive layers forming the integral frame structure are integrated, when a reliability test is performed, the adhesive layer of the frame structure pulls the film (e.g., the diffusion sheet) thereunder, so that the film wrinkles. In addition, the film material below the frame adhesive structure is pulled by the adhesive layer of the frame adhesive structure under the influence of temperature and humidity, and the film material wrinkles. The sectional frame pasting structure refers to fig. 4, and a gap is arranged at the intersection of two edges, so that the film below the adhesive layer is prevented from being pulled, and the film is prevented from wrinkling. However, due to the existence of the gap, light emitted from the backlight source is emitted from the gap, and light leaks from the backlight module, which affects the quality of the display device. According to an embodiment of the present invention, referring to fig. 5, the frame adhesive structure 1000 is formed by the packaging adhesive described above, and since the packaging adhesive includes the first adhesive tape and the second adhesive tape which are stacked, a step having adhesion and a step having no adhesion can be formed at both ends of the gap at a position such as a corner of the frame adhesive structure 1000 by using a double-layer structure of the packaging adhesive. Therefore, the light-tight material can be arranged between the two steps, so that the gap can be shielded to prevent light leakage, and the two ends of the light-tight material are not bonded on the steps formed by the packaging adhesive through the adhesive surfaces. That is, one end of the opaque material is fixedly adhered to the encapsulant, and the other end of the opaque material is not fixed to the encapsulant through the adhesive surface. Therefore, the frame structure 1000 has a gap (one side of the opaque material is movable) for preventing the film from wrinkling, and has a connecting portion for preventing light leakage of the backlight module. Specifically, at the intersection of two edges of the frame adhesive structure 1000 (as shown in the drawing, part a), a gap (as shown in the drawing, in a dotted line) may be formed between the lower layer tapes of the encapsulation adhesive to prevent the film from wrinkling, and a connection portion may be formed between the upper layer tapes of the encapsulation adhesive to prevent light leakage from the backlight module. Therefore, the problems of wrinkling and light leakage of the backlight module can be solved.
It should be noted that the frame-and-tile structure having a rectangular structure in fig. 5 is only exemplary and should not be construed as limiting the present invention. In the present invention, the specific shape of the frame paste structure is not particularly limited, and those skilled in the art can design the frame paste structure according to specific situations. For example, the shape may be rectangular, square, triangular, etc.
The following describes the structure of the backlight module according to the embodiment of the present invention:
it can be understood by those skilled in the art that the backlight module substrate 2000 may further include structures such as a backlight source, a light guide plate, a diffusion sheet, etc. in order to realize the use function of the backlight module. According to an embodiment of the present invention, the frame paste structure 1000 is used for connecting a backlight module and a display panel. Therefore, the display of the display panel can be realized by utilizing the backlight module.
As described above, the frame structure 1000 is made of the packaging adhesive described above, that is, the frame structure 1000 is made of the first adhesive tape and the second adhesive tape which are stacked. According to an embodiment of the present invention, in the frame paste structure 1000, one of any two adjacent sides may be disposed on the backlight module substrate 2000 by a first tape, the other may be disposed on the backlight module substrate 2000 by a second tape, and a gap is disposed between the two adjacent sides, where the sides of the frame paste structure 1000 have a step structure, and the step structure is formed by the first tape or the second tape exposed to the outside. According to an embodiment of the present invention, the frame paste structure 1000 may further include a connecting portion, the connecting portion is disposed on two step structures on two adjacent sides of the frame paste structure 1000, and the connecting portion covers a gap between the two sides. Therefore, the frame pasting structure can prevent the backlight module from wrinkling and light leakage.
The material of the connecting portion is not particularly limited as long as it blocks light transmission, and can be selected by those skilled in the art according to the circumstances. For example, according to an embodiment of the present invention, the connection portion may be constituted by at least one of the light blocking layer and the second tape. According to an embodiment of the present invention, the light blocking layer may be composed of PET that is opaque to light. Therefore, light leakage of the backlight module can be further prevented.
As described above, the specific shape of the frame paste structure is not particularly limited, and the frame paste structure according to the embodiment of the present invention is described in detail below by taking a frame paste structure of a rectangular structure as an example:
according to an embodiment of the present invention, any two adjacent sides of the frame pasting structure 1000 with a rectangular structure, for example, referring to fig. 5, adjacent first sides 1100 and second sides 1200, the first sides 1100 may be disposed on the backlight module substrate 2000 through a first adhesive tape, that is, the sides may adopt the package adhesive structure in fig. 6, and the second adhesive tape 200 is disposed above the first adhesive tape 100. The second side 1200 may be disposed on the backlight module substrate 2000 through the second adhesive tape, that is, the side may adopt the encapsulating adhesive structure in fig. 1, and the first adhesive tape 100 is disposed above the second adhesive tape 200. According to the embodiment of the present invention, two adjacent sides of the frame attachment structure 1000 are disposed with different tapes at the lower layer, so as to form a gap and a connection portion at the intersection of the two sides. Thus, the adjacent sides are formed of different encapsulating adhesive structures.
According to the embodiment of the present invention, a gap is disposed between two adjacent sides of the frame adhesive structure 1000, that is, a gap is disposed between the lower adhesive tapes constituting the frame adhesive structure 1000. Specifically, referring to fig. 7 and 8, a gap is formed between the first tape 100 disposed on the backlight module substrate and the second tape 200 disposed on the backlight module substrate, so that wrinkles of the film material can be prevented. Further, the inventors found that the light leakage problem is serious when the width of the slit is large, and the wrinkle problem is not solved when the width of the slit is small, and thus, it is necessary to design the width of the slit reasonably. According to an embodiment of the invention, the width of the slit may be 0.15-0.4 mm. According to a specific embodiment of the present invention, the width of the slit may be 0.3 mm.
According to an embodiment of the present invention, at the gap, the edge of the frame attachment structure 1000 has a step structure. Specifically, in the packaging adhesive, the lengths of the first adhesive tape 100 and the second adhesive tape 200 located above are smaller than the lengths of the second adhesive tape 200 and the first adhesive tape 100 located below and corresponding to the first adhesive tape 100, so that a step structure is formed. According to an embodiment of the present invention, referring to fig. 7 and 8, the first tape 100 disposed on the backlight module substrate and the second tape 200 disposed on the backlight module substrate have a step structure (shown as a dotted line portion). The upper surface of the step structure of the second tape 200 is a second substrate 220, and the upper surface of the step structure of the first tape 100 is a first adhesive surface 110. According to an embodiment of the present invention, the frame paste structure 1000 may further include a connection part 300, and the connection part 300 is disposed on the two step structures of the two sides and covers a gap between the two sides. Specifically, one side of the lower surface of the connecting portion 300 is in contact with the step structure of the first tape 100, and the other side is in contact with the step structure of the second tape 200. That is, one side of the lower surface of the connection part 300 is in contact with the first adhesive surface 110, and the other side is in contact with the second substrate 220. Thereby, the side of the connecting part contacting with the adhesive surface is fixed, and the movement of the connecting part can be prevented; the side of the connecting part contacting with the substrate is not fixed, so that the film material below can be prevented from being pulled due to the change of temperature and humidity, and the phenomenon of wrinkling can be prevented.
According to the embodiment of the invention, the thicknesses of the first adhesive tape and the second adhesive tape can be equal, so that the heights of the step structures of the first adhesive tape and the second adhesive tape can be equal, and further, the connecting part in the subsequent structure can be horizontally placed on the two step structures to play a good light shielding role. Therefore, the frame pasting structure with the smooth surface can be ensured to be obtained only by enabling the thickness of the connecting part to be equal to that of the first adhesive tape and the second adhesive tape. According to an embodiment of the present invention, the thickness of the first tape and the second tape may be 0.05-0.1 mm. According to an embodiment of the present invention, the thickness of the first adhesive tape may be 0.05mm, wherein the thickness of the first substrate may be 30 μm, and the thickness of the first adhesive layer may be 10 μm; the thickness of the second adhesive tape may be 0.05mm, wherein the thickness of the second substrate may be 40 μm, and the thickness of the second adhesive layer may be 10 μm. Thus, the adhesive tape can be used for connection, and the thickness of the display device is not too large.
The specific structure of the connecting portion is not particularly limited as long as the connecting portion can block light emitted from the backlight, and those skilled in the art can design the connecting portion according to specific situations. For example, according to an embodiment of the present invention, referring to fig. 7, the connection part 300 may be provided at a gap between the upper tapes after the encapsulation structure is provided. According to an embodiment of the present invention, the connection portion 300 may be formed of a light blocking layer, and particularly, may be formed of light-impermeable PET. According to the embodiment of the invention, one side of the lower surface of the light blocking layer is contacted with the adhesive surface so as to be fixed, and the other side of the lower surface of the light blocking layer is contacted with the substrate so as not to be fixed, so that the lower film material cannot be pulled due to the change of temperature and humidity, and the wrinkling phenomenon is avoided. Meanwhile, the light blocking layer is light-tight, so that light at the gap can be blocked. Since the light-blocking layer blocks light at the slit, the width of the light-blocking layer needs to be larger than the width of the slit. According to an embodiment of the present invention, the width of the light blocking layer may be 1mm wider than the width of the slit. According to a specific embodiment of the present invention, the width of the light blocking layer may be 1.3 mm.
According to an embodiment of the present invention, referring to fig. 8, the connection part may also be constituted by a second tape 200. According to the embodiment of the present invention, the second adhesive tape 200 located above in the sealing adhesive may extend on the step structure of the first adhesive tape 100 corresponding thereto and located below, and extend to the step structure of the second adhesive tape 200 located below in the adjacent sealing adhesive, so that the gap between the two sides may be covered by the second adhesive tape. According to the embodiment of the invention, one side of the lower surface of the extended second adhesive tape is in contact with the adhesive surface, and the other side of the lower surface of the extended second adhesive tape is in contact with the base material, so that when the temperature and the humidity change, the lower film material is not pulled, the wrinkling phenomenon can be avoided, and meanwhile, the light transmission at the gap can be shielded.
According to the embodiment of the invention, in the frame paste structure, when the intersection of any two adjacent edges adopts the connecting part to shield the gap, the light shielding layer and the second adhesive tape can be adopted. Therefore, the shading effect can be achieved.
In another aspect of the present invention, a display device is provided. According to an embodiment of the present invention, the display device includes the backlight module described above, so that the display device has all the features and advantages of the backlight module described above, and will not be described herein again. In general, the display device has higher quality and yield.
In the description of the present invention, the terms "upper", "lower", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention but do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description herein, references to the description of "one embodiment," "another embodiment," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction. In addition, it should be noted that the terms "first" and "second" in this specification are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (7)
1. A backlight module, comprising:
a backlight module substrate; and
the frame paste structure is arranged on the backlight module substrate and comprises packaging adhesive, the packaging adhesive comprises a first adhesive tape and a second adhesive tape which are arranged in a stacked mode, the thicknesses of the first adhesive tape and the second adhesive tape are equal, the first adhesive tape comprises a first base material and two first adhesive surfaces distributed on two sides of the first base material, the second adhesive tape comprises a second base material and a second adhesive surface, the first adhesive tape is arranged on one side, away from the second adhesive surface, of the second adhesive tape,
in the frame pasting structure, one of any two adjacent edges is arranged on the backlight module substrate through the first adhesive tape, the other edge is arranged on the backlight module substrate through the second adhesive tape,
and a gap is arranged between two adjacent edges in the frame pasting structure, the edge of the frame pasting structure is provided with a step structure at the gap, and the step structure is formed by the first adhesive tape or the second adhesive tape exposed outside.
2. The backlight module as claimed in claim 1, wherein the frame paste structure further comprises:
the connecting parts are arranged on two adjacent two sides of the frame pasting structure on the step structures, and the connecting parts cover the gaps.
3. A backlight module according to claim 2, wherein the connecting portion is formed by at least one of a light blocking layer and the second adhesive tape.
4. The backlight module as claimed in claim 1, wherein the first substrate and the second substrate each independently comprise at least one of PET and fiber.
5. The backlight module as claimed in claim 1, wherein the first adhesive tape comprises a first adhesive layer disposed on both sides of the first substrate, and the first adhesive surface is formed by the first adhesive layer.
6. The backlight module as claimed in claim 1, wherein the second adhesive tape comprises a second adhesive layer disposed on the second substrate, and the second adhesive surface is formed by the second adhesive layer.
7. A display device comprising the backlight module according to any one of claims 1 to 6.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710812694.2A CN107340652B (en) | 2017-09-11 | 2017-09-11 | Packaging adhesive, backlight module and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710812694.2A CN107340652B (en) | 2017-09-11 | 2017-09-11 | Packaging adhesive, backlight module and display device |
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| CN107340652A CN107340652A (en) | 2017-11-10 |
| CN107340652B true CN107340652B (en) | 2020-05-15 |
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| CN109036119B (en) * | 2018-08-13 | 2021-01-22 | 广州国显科技有限公司 | Optical cement structure, display panel and display device |
| CN110379299A (en) | 2019-07-19 | 2019-10-25 | 深圳市华星光电半导体显示技术有限公司 | The production method of frame glue structure and display panel |
| CN110379298B (en) * | 2019-07-19 | 2021-06-01 | 深圳市华星光电半导体显示技术有限公司 | Frame glue structure and manufacturing method of display panel |
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| CN101245226A (en) * | 2008-03-21 | 2008-08-20 | 苏州锦富科技有限公司 | Novel shading rubber belt |
| CN104570485B (en) * | 2015-02-03 | 2017-05-03 | 北京京东方茶谷电子有限公司 | Display device |
| CN105911759A (en) * | 2016-05-31 | 2016-08-31 | 翰博高新材料(合肥)股份有限公司 | Two-in-one adhesive tape for panel display backboard and preparation method thereof |
| CN106010336B (en) * | 2016-06-29 | 2022-09-09 | 京东方科技集团股份有限公司 | Shading adhesive tape, backlight module and display device |
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2017
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