CN211928940U - Display device - Google Patents
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- CN211928940U CN211928940U CN202020342474.5U CN202020342474U CN211928940U CN 211928940 U CN211928940 U CN 211928940U CN 202020342474 U CN202020342474 U CN 202020342474U CN 211928940 U CN211928940 U CN 211928940U
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Abstract
The embodiment of the utility model discloses display device. The display device comprises a flexible display panel and a film-shaped integration adhesive; the flexible display panel comprises a display area, a bending area positioned on one side of the display area, and a binding area positioned on one side of the bending area far away from the display area; the bonding region comprises a plurality of bonding pads; the film-shaped integration glue comprises a first attaching portion and a second attaching portion, the first attaching portion covers the bending area, the second attaching portion at least partially covers the binding area, and the bonding pad is located in the binding area covered by the second attaching portion; wherein a plurality of conductive particles are arranged in the second bonding part. The first attaching portion covering the bending area and the second attaching portion covering at least part of the binding area are arranged to form integrally-formed film-shaped integrated glue, and the film-shaped integrated glue is fixed on the corresponding area of the display panel in an attaching mode, so that the effects of simplifying the manufacturing process of the attaching glue layer and improving the attaching precision are achieved.
Description
Technical Field
The embodiment of the utility model provides a relate to and show technical field, especially relate to a display device.
Background
With the increasing development of flexible display technology, flexible display panels are getting more and more attention. Flexible displays, which have wider viewing angles, higher refresh rates, and thinner dimensions, have been successfully used in high-end smart phones and some wearable smart electronic products.
In order to achieve a high display area screen ratio, the width of the border of the flexible display panel needs to be reduced as much as possible when the flexible display panel is manufactured, and the flexible display panel is usually required to be bent. In an actual bending process, the circuit in the bending area is usually designed by an organic structure, and the organic structure is easy to break when being subjected to an external force, so that abnormal display is caused. In the prior art, organic glue is generally coated on the organic structure for protection, and the problems of high coating process difficulty, complicated process and the like can be caused by adopting an organic glue coating mode; in addition, due to the fact that the coating thickness and the coating precision are not controllable, the problem that the bent organic glue is easy to peel off due to the fact that the organic glue is coated too thickly or the subsequent attaching process cannot be carried out due to the fact that the coating precision is not controllable is solved.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a display device to realize simplifying attached glue film processing procedure technology, reducing the glue film and peeling off the effect that probability and improvement laminating precision.
The embodiment of the utility model provides a display device, this display device includes flexible display panel and membranous integrated glue;
the flexible display panel comprises a display area, a bending area positioned on one side of the display area, and a binding area positioned on one side of the bending area far away from the display area; the bonding region comprises a plurality of bonding pads;
the film-shaped integration glue comprises a first attaching portion and a second attaching portion, the first attaching portion covers the bending area, the second attaching portion covers at least part of the binding area, and the bonding pad is located in the binding area covered by the second attaching portion;
wherein a plurality of conductive particles are arranged in the second bonding part.
Optionally, the bonding region includes a pad region, and the plurality of pads are disposed in the pad region; the second attaching portion covers the pad region.
Optionally, the thickness of the first fitting portion is greater than that of the second fitting portion.
Optionally, the flexible display panel includes a flexible display substrate and a plurality of functional film layers disposed on one side of the flexible display substrate close to the film-shaped integration glue;
the elastic modulus of the first bonding portion is the same as the elastic modulus of the flexible substrate.
Optionally, the film-shaped integration glue includes a glue layer and a plurality of the conductive particles, and the glue layer is made of a thermosetting resin material.
Optionally, the film-shaped integration adhesive further includes a protection film and a release film respectively disposed on opposite sides of the adhesive layer in the light emitting direction of the flexible display panel.
Optionally, the device further comprises a supporting layer; the support layer includes a first sub-support and a second sub-support,
the first sub-supporting part is arranged on one side, deviating from the light emergent surface of the flexible display panel, of the display area, and the second sub-supporting part is arranged on one side, deviating from the light emergent surface of the flexible display panel, of the binding area.
Optionally, the bonding pad further comprises a flexible printed circuit board, wherein the flexible printed circuit board is bound on the binding region and is electrically connected with the plurality of bonding pads through the second attaching portion.
Optionally, the flexible display panel includes a polarizer, and the polarizer is disposed on one side of the flexible display panel close to the light emitting surface of the flexible display panel; the thickness of the film-shaped integration adhesive is equal to that of the polarizer.
Optionally, the first attaching portion includes conductive particles.
The embodiment of the utility model provides a display device includes flexible display panel and membranous integrated glue; the flexible display panel comprises a display area, a bending area positioned on one side of the display area, and a binding area positioned on one side of the bending area far away from the display area; the bonding region comprises a plurality of bonding pads; the film-shaped integration glue comprises a first attaching portion and a second attaching portion, the first attaching portion covers the bending area, the second attaching portion covers the binding area, and the bonding pad is located in the binding area covered by the second attaching portion; wherein a plurality of conductive particles are arranged in the second bonding part. The first attaching portion covering the bending area and the second attaching portion covering at least part of the binding area form integrally-formed film-shaped integrated glue, the film-shaped integrated glue is fixed on the corresponding area of the display panel in an attaching mode, the problems that in the prior art, the coating process is complicated, the coating precision and the thickness are not controllable and the like caused by the fact that the bending area of the flexible display panel is coated in an organic glue coating mode are solved, and the effects of simplifying the process of attaching glue layers and improving the attaching precision are achieved.
Drawings
Fig. 1 is a schematic top view of a display device according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view taken along the dashed line AB of FIG. 1;
fig. 3 is a schematic top view of a display device according to a second embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view taken along the dashed line AB in FIG. 3;
fig. 5 is a schematic structural diagram of a film-shaped integration adhesive according to a second embodiment of the present invention;
fig. 6 is a schematic structural diagram of another film-shaped integration adhesive according to the second embodiment of the present invention.
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.
Example one
Fig. 1 is a schematic top view of a display device according to a first embodiment of the present invention, and fig. 2 is a schematic cross-sectional view along a dotted line AB in fig. 1, as shown in fig. 1 and fig. 2, the display device includes a flexible display panel 10 and a film-shaped integration adhesive 20; the flexible display panel 10 comprises a display area 11, a bending area 12 located on one side of the display area 11, and a binding area 13 located on one side of the bending area 12 far away from the display area; the bonding region 13 includes a plurality of pads 130; the film-shaped integration glue 20 comprises a first attaching portion 21 and a second attaching portion 22, the first attaching portion 21 covers the bending region 12, the second attaching portion 22 at least partially covers the binding region 13, and the bonding pad 130 is located in the binding region 13 covered by the second attaching portion 22; a plurality of conductive particles a are provided in the second bonded portion 22.
For example, the second attaching portion 22 may select Anisotropic Conductive Film (ACF), the ACF has functions of unidirectional conduction and gluing fixation, and can realize electrical connection between the flexible printed circuit board and the array external wiring line of the bending region 12, and the second attaching portion 22 may also have a suitable thickness according to the requirement of the display device. The first attaching portion 21 may adopt a film-shaped curing adhesive instead of a liquid curing adhesive, for example, the first attaching portion 21 may select a film-shaped ultraviolet curing adhesive, and then the film-shaped ultraviolet curing adhesive is integrated with the second attaching portion 22, and the integrated film-shaped integrated adhesive 20 covers the bending region 12 and the binding region 13 of the flexible display panel 10. The first attaching portion 21 may also be an ACF glue not including conductive particles, and the ACF glue not including conductive particles is integrated with the ACF glue of the second attaching portion 22, and then integrally attached to the bending region 12 and the bonding region 13 of the flexible display panel 10.
In the process of manufacturing the flexible display panel, the bending region 12 of the flexible display panel is usually provided with an external array wiring circuit connected with the internal signal line of the flexible display panel, and then the flexible printed circuit is bound with the external array wiring circuit through the conductive adhesive layer. In order to prevent external water and oxygen from corroding the array external wiring circuit of the bending area 12 and finish the binding process, the display device in the technical scheme comprises a flexible display panel 10 and film-shaped integration glue 20, wherein the film-shaped integration glue 20 is integrally attached to the bending area 12 and the binding area 13 of the flexible display panel 10. The first attaching part 21 of the film-shaped integrating adhesive 20 is attached to the bending area 12 of the flexible display panel 10, so that the protection of the external array wiring circuit connected with the signal lines inside the flexible display panel 10 is completed; the second bonding portion 22 of the film-shaped integration adhesive 20 is bonded to the bonding region 13 of the flexible display panel 10, and a plurality of conductive particles a are disposed in the second bonding portion 22, so that the flexible printed circuit and the external array wiring line can be bonded. The problems that in the prior art, the coating process is complicated due to the fact that a waterproof and anticorrosion protective adhesive layer is directly coated in the bending area 12 to protect the array external wiring of the bending area 12, the coating precision and the thickness are uncontrollable, the peeling probability of the protective adhesive layer is high, the subsequent attaching process cannot be carried out and the like are solved, and the effects of simplifying the manufacturing process of the attaching adhesive layer, reducing the peeling probability of the adhesive layer and improving the attaching precision are achieved.
Example two
On the basis of the first embodiment, further optimized, fig. 3 is a schematic top view structure diagram of a display device provided by the second embodiment of the present invention, fig. 4 is a schematic cross-sectional structure diagram along a dotted line AB in fig. 3, as shown in fig. 3, the bonding region 13 includes a pad region 131, and the plurality of pads 130 are disposed in the pad region 131; the second attaching portion 22 covers the pad region 131.
The pad region 131 is a partial bonding region that can include a plurality of pads 130 and has a minimum area. In addition, the second attaching part 22 covers the pad region 131, that is, the second attaching part 22 covers the pad region 131 and a part of the bonding region of the pad region 131 close to the bending region 12, as shown in fig. 3.
It should be noted that, such an arrangement mode realizes reduction of the area of the second attaching portion 22, and the process of the bonding process is relatively simple because the second attaching portions 22 do not need to be respectively arranged corresponding to the pads 130.
Alternatively, referring to fig. 4, the thickness of the first fitting portion 21 is greater than that of the second fitting portion 22.
In the actual process, the thickness of the first attaching portion 21 is greater than that of the second attaching portion 22, so that a flexible printed circuit board is subsequently arranged on the second attaching portion 22, the flexible printed circuit board and the first attaching portion 21 of the bending region 12 are ensured to be in the same plane, the flexible printed circuit board and the second attaching portion 21 are attached without gaps, and elements in the display device are prevented from being corroded by the external environment.
Optionally, referring to fig. 4, the flexible display panel 10 includes a flexible display substrate 100 and a plurality of functional film layers 110 disposed on one side of the flexible display substrate 100 close to the film-shaped integration glue 20; the elastic modulus of the first bonded portion 21 is the same as the elastic modulus of the flexible substrate 110.
In order to achieve a high display area ratio, the flexible display panel 10 is usually required to be bent in the bending region 12, and in order to prevent the external array wiring lines from being broken when an external force is applied to the external array wiring lines during bending, the elastic modulus of the first bonding portion 21 is the same as that of the flexible substrate 110, so that the external array wiring lines can be protected, and the function failure of the flexible display device can be prevented.
For example, the plurality of functional film layers 110 may include a pixel defining layer, an anode layer, a cathode layer, a planarization layer, and the like, and the embodiment is not particularly limited.
Optionally, fig. 5 is a schematic structural diagram of a film-shaped integration adhesive provided by the second embodiment of the present invention, as shown in fig. 5, the film-shaped integration adhesive 20 includes an adhesive layer and a plurality of conductive particles a, and the adhesive layer is made of a thermosetting resin material.
The film-shaped integration glue 20 includes a plurality of conductive particles a and a glue layer, and the glue layer may be made of a thermosetting resin material, for example, an epoxy resin material, which has high temperature stability, low absorption, and high reliability. The conductive particles generally have a particle diameter of 3 to 10 μm, and the uniformity of the plurality of conductive particles is good to ensure the conductivity of the second bonding portion 22 of the film-like integration adhesive 20.
Optionally, referring to fig. 5, the film-shaped integration adhesive 20 further includes a protection film 23 and a release film 24 respectively disposed on opposite sides of the adhesive layer in the light emitting direction of the flexible display panel 10.
The protective film 23 and the release film 24 on the opposite side of the glue layer of the film-shaped integrated glue 20 can serve to isolate and protect the glue layer of the film-shaped integrated glue 20 from adhering to other external substances. Generally, before the film-shaped integrated adhesive 20 is attached to the bending region 12 and the binding region 13 of the flexible display panel 10, the protective film 23 on one side of the middle adhesive layer of the film-shaped integrated adhesive 20 and the release film 24 on the other side of the middle adhesive layer of the film-shaped integrated adhesive 20 are torn off. After the protective film 23 is torn off, the adhesive layer of the film-shaped integration adhesive 20 close to the upper surface of the flexible circuit board has very low standing viscosity, so that the adhesive layer of the film-shaped integration adhesive 20 close to the upper surface of the flexible circuit board can be adhered to other substances; after the release film 24 is torn off, the lower surface of the glue layer of the film-like integrated adhesive 20 close to the plurality of pads 130 has strong standing adhesion, and the film-like integrated adhesive 20 is prevented from peeling off from the wiring due to low adhesion of the lower surface of the glue layer of the film-like integrated adhesive 20.
Optionally, referring to fig. 4, a support layer is further included; the support layer includes a first sub-support 31 and a second sub-support 32,
the first sub-supporting portion 31 is disposed on a side of the display area 11 departing from the light emitting surface of the flexible display panel 10, and the second sub-supporting portion 32 is disposed on a side of the binding area 13 departing from the light emitting surface of the flexible display panel 10.
When the flexible display panel 10 is bent at the bending region 12, the support layer protects the display panel, and the bending region 12 hollowed in the middle of the first sub-support portion 31 and the second sub-support portion 32 in the support layer 30 can relieve the compressive stress at the bending region 12 of the display panel, thereby reducing the problems of abnormal display of the flexible display panel 10 caused by bending damage.
Optionally, referring to fig. 4, the display device further includes a flexible printed circuit 40, and the flexible printed circuit 40 is bound on the binding region 13 and connected to the plurality of pad electrodes 130 through the second attaching portion 22.
The flexible printed circuit board 40 is electrically connected to the plurality of pads through the second attaching portion 22, and is connected to the external array wiring line of the bending region 12.
Optionally, as shown in fig. 4, the flexible display panel 10 further includes a polarizer 120, where the polarizer 120 is disposed on one side of the flexible display panel 10 close to the light emitting surface thereof; the film-shaped integration adhesive 20 has a thickness equal to that of the polarizer 120.
Wherein, the integrated film-shaped glue 20 is directly attached to the bending region 12 and the binding region 13 of the flexible display panel 10, and the precision of the film-shaped integrated glue 20 is adjustable. It should be noted that the accuracy means that the film-like integrated adhesive 20 can be selected to have an appropriate shape and size according to the area of the region where the film-like integrated adhesive 20 is attached. The film-shaped integration adhesive 20 with adjustable precision is selected, and the film-shaped integration adhesive 20 can be simultaneously attached to the polarizer on the display panel 10, so that the liquid curing adhesive is prevented from being coated on the polarizer 10 due to the liquidity of the liquid.
Moreover, the thickness of the film-shaped integration adhesive 20 is equal to the thickness of the polarizer 120, so that the flatness of the lamination between the film-shaped integration adhesive 20 and the polarizer on the display panel 10 is ensured, and the corrosion of the external environment to each element inside the display device is prevented.
Optionally, fig. 6 is a schematic structural diagram of another film-shaped integration adhesive provided in the second embodiment of the present invention, and as shown in fig. 6, the first attaching portion 21 includes conductive particles.
It can be understood that, this arrangement mode enables the second attaching portion 22 and the first attaching portion 21 of the bending region 12 to be made of the same material, and the film-shaped integration glue 20 does not need to be prepared in different areas, thereby achieving the beneficial effect of simplifying the preparation process of the film-shaped integration glue 20.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. A display device is characterized by comprising a flexible display panel and a film-shaped integration adhesive;
the flexible display panel comprises a display area, a bending area positioned on one side of the display area, and a binding area positioned on one side of the bending area far away from the display area; the bonding region comprises a plurality of bonding pads;
the film-shaped integration glue comprises a first attaching portion and a second attaching portion, the first attaching portion covers the bending area, the second attaching portion covers at least part of the binding area, and the bonding pad is located in the binding area covered by the second attaching portion;
wherein a plurality of conductive particles are arranged in the second bonding part.
2. The display device according to claim 1, wherein the bonding region includes a pad region, and a plurality of the pads are provided in the pad region; the second attaching portion covers the pad region.
3. The display device according to claim 1, wherein a thickness of the first attaching portion is larger than a thickness of the second attaching portion.
4. The display device according to claim 1, wherein the flexible display panel comprises a flexible display substrate and a plurality of functional film layers disposed on one side of the flexible display substrate close to the film-shaped integration adhesive;
the elastic modulus of the first bonding portion is the same as that of the flexible display substrate.
5. The display device according to claim 1, wherein the film-like integration paste comprises a paste layer and a plurality of the conductive particles, and a material of the paste layer is a thermosetting resin material.
6. The display device according to claim 5, wherein the film-like integration paste further comprises a protective film and a release film respectively disposed on opposite sides of the paste layer in a light exit direction of the flexible display panel.
7. The display device according to claim 1, further comprising a support layer; the support layer includes a first sub-support and a second sub-support,
the first sub-supporting part is arranged on one side, deviating from the light emergent surface of the flexible display panel, of the display area, and the second sub-supporting part is arranged on one side, deviating from the light emergent surface of the flexible display panel, of the binding area.
8. The display device according to claim 1, further comprising a flexible printed circuit board, wherein the flexible printed circuit board is bound on the binding region and electrically connected with the plurality of pads through the second attaching portion.
9. The display device according to claim 1, wherein the flexible display panel comprises a polarizer disposed on a side of the flexible display panel near a light emitting surface thereof; the thickness of the film-shaped integration adhesive is equal to that of the polarizer.
10. The display device according to claim 1, wherein the first attaching portion includes conductive particles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020342474.5U CN211928940U (en) | 2020-03-18 | 2020-03-18 | Display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020342474.5U CN211928940U (en) | 2020-03-18 | 2020-03-18 | Display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211928940U true CN211928940U (en) | 2020-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020342474.5U Active CN211928940U (en) | 2020-03-18 | 2020-03-18 | Display device |
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| Country | Link |
|---|---|
| CN (1) | CN211928940U (en) |
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2020
- 2020-03-18 CN CN202020342474.5U patent/CN211928940U/en active Active
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