CN212322555U - Display assembly and display device - Google Patents
Display assembly and display device Download PDFInfo
- Publication number
- CN212322555U CN212322555U CN202021683659.9U CN202021683659U CN212322555U CN 212322555 U CN212322555 U CN 212322555U CN 202021683659 U CN202021683659 U CN 202021683659U CN 212322555 U CN212322555 U CN 212322555U
- Authority
- CN
- China
- Prior art keywords
- layer
- panel body
- display
- panel
- circuit board
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The utility model discloses a display module and display device relates to and shows technical field, invents for solving the problem that flexible display panel takes place to peel off with other retes after buckling easily. The display assembly includes: the flexible display panel comprises a panel body and a bent part, wherein the first end of the bent part along the extension direction of the bent part is connected with one side edge of the panel body; the circuit board is arranged on the back side of the panel body and is connected with the second end of the bending part; the diaphragm assembly is arranged on the display side of the panel body in a stacked mode, and the cover plate is arranged on one side, away from the panel body, of the diaphragm assembly in a stacked mode; the first supporting layer is arranged on the back side of the panel body in a laminated mode and is located between the panel body and the bending portion; the second supporting layer is arranged at the first end of the bending part and is positioned between the cover plate and the bending part. The utility model discloses can be used to in display device such as cell-phone.
Description
Technical Field
The utility model relates to a show technical field, especially relate to a display module and display device.
Background
With the development of display technology, the size requirement of the lower frame of a display device such as a mobile phone and the like in the industry is higher and higher, the smaller size of the lower frame enables the display device to have a larger screen occupation ratio, and a user can obtain better visual experience.
In order to obtain a smaller lower frame, a COP (chip on plastic) packaging technology is developed, in which a Driver IC is fabricated on a substrate of a flexible display panel, and then the portion of the flexible display panel on which the Driver IC is disposed is bent and bonded to a circuit board at a back side.
However, after bending, the bending area of the flexible display panel is easily peeled from other film layers under the action of bending stress, so that the firmness of fixing the flexible display panel is reduced, and the subsequent normal operation of the flexible display panel is not favorable.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a display module and display device for solve flexible display panel and take place the problem of peeling off with other retes after buckling easily.
In order to achieve the above object, in a first aspect, an embodiment of the present invention provides a display assembly, including a flexible display panel, a circuit board, a membrane assembly, a cover plate, a first supporting layer, and a second supporting layer, where the flexible display panel includes a panel body and a bending portion, and along an extending direction of the bending portion, a first end of the bending portion is connected to one side edge of the panel body, and a second end of the bending portion is located at a back side of the panel body; the circuit board is arranged on the back side of the panel body and is connected with the second end of the bending part; the membrane assembly is arranged on the display side of the panel body in a laminated mode and comprises at least one of a polaroid and a touch panel; the cover plate is arranged on one side, far away from the panel body, of the membrane assembly in a stacked mode; the first supporting layer is arranged on the back side of the panel body in a laminated mode and is located between the panel body and the bent portion; the second support layer is disposed at a first end of the bending portion and between the cover plate and the bending portion, and the second support layer is configured to support the bending portion.
In some embodiments, the second support layer is an elastic support layer or a rigid support layer, one side surface of the second support layer is bonded to the cover plate, and the other side surface of the second support layer abuts against the bent portion.
In some embodiments, the resilient support layer is a PET layer or a rubber layer; the rigid support layer is a first steel sheet layer.
In some embodiments, the display assembly further comprises a first back film and a second back film, the first back film is arranged on the back surface of the panel body in a lamination mode, and a part of the first back film is located between the first supporting layer and the panel body; the second back film is arranged between the first supporting layer and the bending part in a laminated mode; the first back membrane is close to the side edge of the arched section of the bending part and exceeds the second back membrane to the outside of the side edge of the arched section of the bending part.
In some embodiments, the first back film is close to the side edge of the arched section of the bending part, and the distance beyond the side edge of the second back film close to the arched section of the bending part is in a range of 30-90 μm.
In some embodiments, the bending portion includes a substrate connected between the panel body and the circuit board, and a cured adhesive layer covering an outer surface of the substrate; and along the extending direction of the bent part, one end of the solidified glue layer is bonded with the edge of the membrane component, and the other end of the solidified glue layer is positioned at the joint of the base body and the circuit board.
In some embodiments, the display assembly further comprises: and the second steel sheet layer is arranged on the back side of the panel body in a stacked mode, and a part of the second steel sheet layer is located between the panel body and the first supporting layer.
In some embodiments, the diaphragm assembly includes a touch panel disposed separately from the panel body; the display assembly further comprises a flexible circuit board, one end of the flexible circuit board is connected with one side edge of the touch panel, and the other end of the flexible circuit board is connected with the circuit board; along a first direction, the second supporting layer and the flexible circuit board are arranged in a staggered mode, and the first direction is perpendicular to the thickness direction of the panel body and the extending direction of the bending portion.
In some embodiments, the diaphragm assembly includes a first adhesive layer, a polarizer, a second adhesive layer, the touch panel, and a third adhesive layer, which are sequentially stacked, where the first adhesive layer is located between the polarizer and the panel body, and the third adhesive layer is located between the touch panel and the cover plate.
In some embodiments, the flexible display panel is a flexible display panel integrated with a touch layer; the diaphragm assembly comprises a fourth bonding layer, the polaroid and a fifth bonding layer which are sequentially stacked, wherein the fourth bonding layer is positioned between the polaroid and the panel body, and the fifth bonding layer is positioned between the polaroid and the cover plate; along a first direction, the size of the second supporting layer is adapted to the size of the bent portion, and the first direction is perpendicular to the thickness direction of the panel body and the extending direction of the bent portion.
In a second aspect, an embodiment of the present invention provides a display device, including a housing and the display module of the first aspect, the display module is disposed on the housing.
The embodiment of the utility model provides a display module and display device, through setting up the second supporting layer between apron and kink, in this way the in-process that the kink after will buckling was pressed to first supporting layer at the pressure head, the second supporting layer just can provide the support to the kink, in order to prevent that the arch section of kink from taking place great bending deformation under the effect of the pressure of pressure head, just so can avoid the arch section of kink to take place to bounce-back in order to cause kink and first supporting layer to take place to peel off when the pressure head removes pressure, thereby the fastness that kink and first supporting layer bonded has been guaranteed, and then this flexible display panel's normal work has been guaranteed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a display module in a related art before a flexible display panel is bent;
FIG. 2 is a schematic diagram of the display module shown in FIG. 1 after the flexible display panel is bent;
fig. 3 is a schematic structural diagram of a display device according to some embodiments of the present invention;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
FIG. 5 is a cross-sectional view B-B of FIG. 3;
FIG. 6 is a right side view of the display assembly of FIG. 5;
fig. 7 is a schematic cross-sectional view of a display device according to further embodiments of the present invention;
FIG. 8 is a right side view of the display assembly of FIG. 7;
FIG. 9 is a diagram illustrating an assembly process of the display assembly shown in FIG. 5;
FIG. 10 is a diagram illustrating an assembly process of the display assembly shown in FIG. 7;
fig. 11 is a flow chart illustrating an assembly method of a display module according to some embodiments of the present invention.
Detailed Description
The technical solutions in some embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments, but not all embodiments, of the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by a person of ordinary skill in the art all belong to the protection scope of the present invention.
Unless the context requires otherwise, throughout the description and the claims, the term "comprise" and its other forms, such as the third person's singular form "comprising" and the present participle form "comprising" are to be interpreted in an open, inclusive sense, i.e. as "including, but not limited to". In the description of the present application, the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" and the like are intended to indicate that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. The schematic representations of the above terms are not necessarily referring to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be included in any suitable manner in any one or more embodiments or examples.
In the following, the terms "first", "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless otherwise specified.
In describing some embodiments, the expression "connected" and its derivatives may be used. For example, the term "connected" may be used in describing some embodiments to indicate that two or more elements are in direct physical or electrical contact with each other. The embodiments disclosed herein are not necessarily limited to the contents herein.
"at least one of A, B and C" has the same meaning as "A, B or at least one of C," each including the following combination of A, B and C: a alone, B alone, C alone, a and B in combination, a and C in combination, B and C in combination, and A, B and C in combination.
"A and/or B" includes the following three combinations: a alone, B alone, and a combination of A and B.
The use of "adapted to" or "configured to" herein is meant to be an open and inclusive language that does not exclude devices adapted to or configured to perform additional tasks or steps.
Additionally, the use of "based on" means open and inclusive, as a process, step, calculation, or other action that is "based on" one or more stated conditions or values may in practice be based on additional conditions or values beyond those stated.
As used herein, "about" or "approximately" includes the stated values as well as average values within an acceptable deviation range for the particular value, as determined by one of ordinary skill in the art in view of the measurement in question and the error associated with the measurement of the particular quantity (i.e., the limitations of the measurement system).
Example embodiments are described herein with reference to cross-sectional and/or plan views as idealized example figures. In the drawings, the thickness of layers and regions are exaggerated for clarity. Variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, are to be expected. Thus, the exemplary embodiments should not be construed as limited to the shapes of regions illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. Thus, the regions illustrated in the figures are schematic in nature and their shapes are not intended to illustrate the actual shape of a region of a device and are not intended to limit the scope of the exemplary embodiments.
As shown in fig. 1, fig. 1 is a schematic diagram of a display module in the related art before a flexible display panel 01 is bent. The display component comprises a flexible display panel 01, wherein the flexible display panel 01 comprises a panel body 011, a bending part 012 connected with one side of the panel body 011, a first back film 021 covering the back surface (upper surface in the figure) of the panel body 011, and a second back film 022 covering the bending part 012;
the display side surface (lower side surface in the figure) of the panel body 011 is sequentially stacked with a first adhesive layer 03, a touch panel 04, a polarizer 05, a second adhesive layer 06 and a cover plate 07, and the side of the first back film 021 far away from the panel body 011 is stacked with a first supporting layer 08. The cover plate 07 is placed on the panel carrier 091, and one end of the bent portion 012 is placed on the circuit board carrier 092.
As shown in fig. 2, fig. 2 is a schematic view of the display module shown in fig. 1 after the flexible display panel 01 is bent. The bent portion 012 of the flexible display panel 01 is bent so that the second back film 022 faces the first support layer 08, and then the pressing head 093 presses the bent portion 012 downward to bond the second back film 022 to the first support layer 08.
Because the below of kink 012 lacks the support, and the membrane material itself of kink 012 has certain elasticity, so when pressure head 093 pressfitting kink 012, the arch section of kink 012 can the downwarping take place to warp, after pressure head 093 removed the pressure, the arch section of kink 012 upwards takes place the bounce-back under the effect of self elastic force, the phenomenon (as shown in fig. 2) that second notacoria 022 and first supporting layer 08 laminating can not live can appear, thereby lead to appearing peeling off between second notacoria 022 and the first supporting layer 08, make fixed fastness reduce between flexible display panel 01 and the first supporting layer 08 like this, thereby be unfavorable for the normal work to flexible display panel 01.
The embodiment of the utility model provides a through set up the second supporting layer between apron and flexible display panel's kink to support the kink, thereby avoid the kink to appear peeling off between second notacoria and the first supporting layer because of the bounce-back causes after the pressure head removes pressure.
The embodiment of the utility model provides an in the display device who provides, can be cell-phone, panel computer, TV etc. have flexible display panel's display device, do not specifically limit here.
The structure of the display device will be described below by taking a mobile phone as an example, and other types of display devices can be specifically set with reference to the structure in the embodiment of the mobile phone.
As shown in fig. 3, fig. 3 illustrates a front view of a display device (mobile phone) in some embodiments of the present invention, the display device includes a housing 200 and a display assembly 100 disposed on the housing 200, wherein a display area of the display device is denoted by reference numeral b.
As shown in fig. 4 and 5, fig. 4 is a sectional view taken along a-a of fig. 3, and fig. 5 is a sectional view taken along B-B of fig. 3. The housing 200 comprises a front shell 210 and a rear shell 220, the front shell 210 comprises a front shell bottom wall 211 and a front shell side wall 212 positioned at the periphery of the front shell bottom wall 211, and a flange 213 extending to the outer side of the front shell 210 is arranged on the front shell side wall 212;
the rear housing 220 includes a rear housing bottom wall 221 and a rear housing side wall 222 located at a periphery of the rear housing bottom wall 221, the rear housing side wall 222 is clamped outside the front housing side wall 212 and abuts against the flange 213, so that the front housing 210 and the rear housing 220 are fastened together, and a setting space 230 is formed between the front housing bottom wall 211 and the rear housing bottom wall 221. By providing the housing 200 as the front case 210 and the rear case 220 that are snapped together, it is possible to facilitate the replacement of the components in the installation space 230.
As shown in fig. 5, the display assembly 100 includes a flexible display panel 1, a circuit board 2, a membrane assembly 3, a cover plate 4, a first back film 13, a second back film 14, a first support layer 5, and a second support layer 6;
the flexible display panel 1 is a flexible display panel integrated with a touch layer, the flexible display panel 1 includes a panel body 11 and a bending portion 12, along an extending direction of the bending portion 12, a first end (end a shown in fig. 5) of the bending portion 12 is connected to one side edge of the panel body 11, and a second end (end b shown in fig. 5) is located on a back side (i.e., a side opposite to the display side, a lower side shown in fig. 5) of the panel body 11.
The first back film 13 is stacked on the back surface of the panel body 11, and the second back film 14 is stacked on the inner side surface of the bent portion 12 (i.e., the side surface of the bent portion 12 away from the front case 210).
The flexible display panel 1 may be an OLED (Organic Light-Emitting Diode) panel, or may be other flexible panels, which is not limited herein.
The cover plate 4 and the diaphragm assembly 3 are sequentially stacked on the display side of the panel body 11, the cover plate 4 covers the opening of the front shell 210, the diaphragm assembly 3 comprises a fourth adhesive layer 31, a polarizer 32 and a fifth adhesive layer 33 which are sequentially stacked, the fourth adhesive layer 31 is located between the polarizer 32 and the panel body 11, and the fifth adhesive layer 33 is located between the polarizer 32 and the cover plate 4.
The fourth Adhesive layer 31 and the fifth Adhesive layer 33 may be both OCA (optical Clear Adhesive) layers, but are not limited thereto, and may be other Adhesive layers capable of achieving adhesion.
The first support layer 5 is disposed on the back side of the panel body 11 in a stacked manner and located between the panel body 11 and the bending portion 12, and specifically, the first support layer 5 is disposed near the bending portion 12 and located between the first back film 13 and the second back film 14.
The first support layer 5 may be a Foam adhesive layer (i.e., a Foam layer), and may also be a PET (Polyethylene terephthalate) tape, which is not limited herein.
The circuit board 2 is disposed on the back side of the panel body 11, and one end of the circuit board is connected to the second end of the bending portion 12, and the other end of the circuit board is electrically connected to the main board 300 located in the disposing space 230 through a connector 400 (e.g., a board-to-board connector). The circuit board 2 may be a flexible circuit board, but is not limited thereto, and a non-flexible circuit board may be used.
The second supporting layer 6 is disposed at a first end (end a shown in fig. 5) of the bent portion 12 and between the cover plate 4 and the bent portion 12, and the second supporting layer 6 is configured to support the bent portion 12. Through setting up second supporting layer 6 between apron 4 and kink 12, kink 12 after will buckling at the pressure head presses to the in-process of first supporting layer 5 like this, second supporting layer 6 just can provide the support to kink 12, in order to prevent that the arch section of kink 12 from taking place great bending deformation under the effect of the pressure of pressure head, so just can avoid the arch section of kink 12 to take place to bounce-back so as to cause kink 12 and first supporting layer 5 to take place to peel off when the pressure head removes pressure, thereby the fastness that kink 12 and first supporting layer 5 bonded has been guaranteed, and then this flexible display panel 1's normal work has been guaranteed.
In some embodiments, in order to make the second supporting layer 6 better support the bent portion 12, as shown in fig. 6, fig. 6 is a right side view of the display assembly in fig. 5. Along the first direction X, the dimension m of the second support layer 61Dimension m of the bent portion 122Suitably, the first direction X is parallel to the planeThe thickness direction of the plate body 11 and the extending direction of the bent portion 12 are perpendicular to each other. By "adapted" is meant that the dimensions of the second support layer 6 are equal or similar to the dimensions of the bend 12. By adjusting the dimension m of the second support layer 61Dimension m set to be equal to the bent portion 122Correspondingly, the second supporting layer 6 can integrally support the bent portion 12 in the first direction X, so that the bent portion 12 is kept balanced by the supporting force of the second supporting layer 6 in the first direction X, and the bent portion 12 is prevented from inclining in the first direction X, thereby being beneficial to improving the supporting effect of the second supporting layer 6 on the bent portion 12.
The type of the second support layer 6 is not exclusive, and in some embodiments, as shown in fig. 5, the second support layer 6 is a resilient support layer, one side surface of which is bonded to the cover plate 4 (e.g., may be bonded to the cover plate by an adhesive layer c), and the other side surface of which abuts against the bent portion 12. Through setting up second supporting layer 6 as the elastic support layer, the in-process of the kink 12 of pressure head after will buckling to first supporting layer 5 like this, the elastic support layer can provide certain compressive capacity to play the effect of buffering protection to kink 12.
In this embodiment, the elastic support layer may be a PET layer, which has excellent mechanical properties and a good tensile strength to impact strength ratio, so that the bent portion 12 can be better supported. Besides the PET layer, the elastic support layer may also be a rubber layer, which has good elasticity and hardness, and can provide a certain amount of compression to play a role in buffering and protecting the bent portion 12, and also has a certain hardness to play a good role in supporting the bent portion 12.
In other embodiments, the second support layer 6 is a rigid support layer, one side surface of which is bonded to the cover plate 4 and the other side surface of which abuts against the bent portion 12. The second supporting layer 6 is set as a rigid supporting layer, so that in the process that the bent part 12 is pressed to the first supporting layer 5 by the pressing head, the rigid supporting layer can provide stronger support for the bent part 12, so that the bent part 12 can bear the pressure of a larger pressing head.
In this embodiment, the rigid support layer may be a first steel sheet layer (e.g., may be a stainless steel sheet layer). Compared with other metal layers, the steel sheet layer has the advantages of high strength, good plasticity and toughness and the like, and can provide better support for the bending part 12.
In some embodiments, in order to reduce the stress level at the junction of the bending portion 12 and the second back membrane 14, as shown in fig. 5, the side edge e of the arched section of the first back membrane 13 near the bending portion 12 exceeds the side edge f of the arched section of the second back membrane 14 near the bending portion 12. Through the design, the transition from the arch section to the first straight section (namely, the part of the bending section 12 below the second back membrane 14) of the bending section 12 can be more gradual, and the excessive stress at the joint of the bending section 12 and the second back membrane 14 caused by the undersize steering angle between the two is avoided, so that the risk of the metal routing (such as the SD routing) on the bending section 12 being broken is greatly reduced. Meanwhile, the arch of the arch section of the bending part 12 can be moved towards the direction far away from the side wall 212 of the front shell by the design, so that the risk of collision between the arch section of the bending part 12 and the side wall of the front shell in the assembling process of the display assembly and the front shell is greatly reduced.
As shown in fig. 5, the distance d that the side edge e of the arched section of the first backsheet 13 close to the bending portion 12 exceeds the side edge f of the arched section of the second backsheet 14 close to the bending portion 12 is not too large or too small, and if d is too large, the turning angle between the arched section of the bending portion 12 and the second straight section (i.e. the part of the bending portion 12 above the first backsheet 13) is reduced, so that the stress at the joint of the bending portion 12 and the first backsheet 13 is increased; if d is too small, it is not favorable to significantly reduce the stress level at the junction of the bending portion 12 and the second back film 14. Research shows that when the range of d is 30-90 μm, the stress at the joint of the bending part 12 and the second back film 14 can be significantly reduced, and the excessive stress at the joint of the bending part 12 and the first back film 13 can be avoided.
In some embodiments, as shown in fig. 5, the bending portion 12 includes a substrate 121 connected between the panel body 11 and the circuit board 2, and a cured adhesive layer 122 covering an outer surface of the substrate 121. Through set up solidification glue film 122 on the outside surface at base member 121, can finalize the design and harden the kink 12 like this after solidification of solidification glue film 122, when kink 12 receives the effect of external force, prevent that kink 12 self (especially arch department) from taking place great deformation to can guarantee the uniformity of the shape of kink 12 after buckling in batch production.
The covering position of the cured adhesive layer 122 on the bent portion 12 is not unique, and in some implementations, the cured adhesive layer 122 may completely cover the substrate 121 in the extending direction of the bent portion 12, as shown in fig. 5, along the extending direction of the bent portion 12, one end of the cured adhesive layer 122 is adhered to the edge of the membrane assembly 3, and the other end is located at the joint of the substrate 121 and the circuit board 2. In other embodiments, the cured adhesive layer 122 may also cover the arch section of the bending portion 12. Compared with the embodiment in which the cured adhesive layer 122 covers the arch section of the bending portion 12, in the embodiment shown in fig. 5, since the cured adhesive layer 122 can completely cover the substrate 121 in the extending direction of the bending portion 12, after the cured adhesive layer 122 is cured, the overall shape of the substrate 121 is more favorably realized; meanwhile, one end of the cured adhesive layer 122 is bonded with the edge of the membrane assembly 3, so that the bonding of the joint of the bending part 12 and the membrane assembly 3 is firmer, and the risk of peeling at the joint of the substrate 121 and the membrane assembly 3 in the bending process is greatly reduced.
In some embodiments, as shown in fig. 5, the display assembly further comprises: and the second steel sheet layer 7 is stacked on the back side of the panel body 11, and a part of the second steel sheet layer 7 is positioned between the panel body 11 and the first support layer 5. Because second steel sheet layer 7 has certain intensity, second steel sheet layer 7 can support panel body 11 like this for panel body 11 can keep certain shape, avoids panel body 11 to take place great deformation. The second steel sheet layer 7 has certain toughness, so that the panel body 11 can still be folded, curled and the like according to actual needs; in addition, the second steel sheet layer 7 has a relatively high heat conduction rate, and can also play a role in dissipating heat of the panel body 11.
Wherein, the second steel sheet layer 7 can be a stainless steel sheet layer.
Fig. 7 is a schematic cross-sectional view of a display device according to another embodiment of the present invention. The structure shown in fig. 7 is different from the structure shown in fig. 5 in that: the touch panel 36 in fig. 7 is provided separately from the panel body 11.
As shown in fig. 7, the film assembly 3 includes a first adhesive layer 34, a polarizer 32, a second adhesive layer 35, a touch panel 36 and a third adhesive layer 37, which are sequentially stacked, the first adhesive layer 34 is located between the polarizer 32 and the panel body 11, and the third adhesive layer 37 is located between the touch panel 36 and the cover plate 4; the display module further includes a flexible printed circuit 8, one end of the flexible printed circuit 8 is connected to one edge of the touch panel 36, and the other end is connected to the circuit board 2. In this embodiment, since the touch panel 36 is closer to the cover 4, the touch panel 36 can better sense the touch of the user's finger, which is beneficial to improving the sensitivity of the touch panel 36.
The first adhesive layer 34, the second adhesive layer 35, and the third adhesive layer 37 may be OCA layers, but are not limited thereto, and may be other adhesive layers capable of achieving adhesion.
Of course, in addition to the structure of the film assembly 3 shown in fig. 7, the polarizer 32 may be disposed on the side of the touch panel 36 close to the cover 4. The polarizer 32 may be disposed separately from the touch panel 36, or may be integrated with the touch panel 36, which may be determined according to actual situations.
As shown in fig. 8, fig. 8 is a right side view of the display assembly of fig. 7. Along the first direction X, the second supporting layer 6 is arranged to be staggered with respect to the flexible wiring board 8. Through staggering the second supporting layer 6 and the flexible circuit board 8, the interference between the flexible circuit board 8 and the second supporting layer 6 is avoided, and the flexible circuit board 8 is smoothly connected with the circuit board 2.
In some embodiments, in order to avoid the flexible circuit board 8 interfering with the driving chip 123 on the bending portion 12, as shown in fig. 8, the flexible circuit board 8 includes two sub-circuit boards 81, and the two sub-circuit boards 81 are arranged along the first direction X at intervals and are respectively located at two sides of the driving chip 123. Thus, not only is position interference between the flexible circuit board 8 and the driving chip 123 avoided, but also the arrangement between the flexible circuit board 8 and the bending part 12 is more compact, and the space between the display assembly and the front shell side wall 212 (i.e. the space of the lower frame) is fully utilized, thereby being beneficial to reducing the size of the lower frame of the display device.
As shown in fig. 8, the first supporting layer 5 includes a first sub-supporting layer 61, a second sub-supporting layer 62, and a third sub-supporting layer 63, and along the first direction X, the first sub-supporting layer 61 and the second sub-supporting layer 62 are respectively located at two sides of one of the sub-circuit boards 81, and the second sub-supporting layer 62 and the third sub-supporting layer 63 are respectively located at two sides of the other sub-circuit board 81. By designing the first supporting layer 5 into three sections, the two sub circuit boards 81 can be well avoided, and therefore structural interference between the first supporting layer 5 and the two sub circuit boards 81 does not occur.
The description of other structures in the display device shown in fig. 7 and 8 may specifically refer to the description in the display device shown in fig. 5 and 6, and will not be repeated here.
The embodiment of the present invention further provides an assembling method of a display module, as shown in fig. 9 and 11, fig. 9 is a schematic diagram of an assembling process of the display module shown in fig. 5, and fig. 11 is a flowchart of an assembling method of the display module, the assembling method includes:
s1, as shown in (1) in fig. 9, providing a flexible display panel 1;
wherein, the back surface of the flexible display panel 1 is covered with a back film 15, and the display side surface of the flexible display panel 1 is covered with an upper back film 16; the notacoria 15 and go up notacoria 16 can play the effect of protection to flexible display panel 1 to avoid damage such as surperficial fish tail to appear in flexible display panel 1, simultaneously, at the in-process of equipment, notacoria 15 also can play the effect of support to flexible display panel 1, in order to make things convenient for follow-up and other rete equipment. In the figure, the part of the flexible display panel 1 on the left side of the dotted line is a panel body 11, and the part on the right side of the dotted line is a bent part 12.
S2, as shown in (2) of fig. 9, binding the circuit board 2 at one end of the bending portion 12 of the flexible display panel 1 away from the panel body 11;
the upper back film 16 needs to be removed before the circuit board 2 is bound, the upper back film 16 may be removed by laser irradiation, or the upper back film 16 may be removed by chemical means, for example, the upper back film 16 is removed by using a dissolving solution.
When the circuit board 2 is bound, the binding pins on the circuit board 2 and the binding pins on the end of the bending part 12 far away from the panel body 11 can be connected through the conductive adhesive, so that the circuit board 2 is bound.
S3, as shown in (3) in fig. 9, disposing the membrane module 3 and the cover plate 4 in this order on the display-side surface of the panel body 11, and disposing the second support layer 6 between the cover plate 4 and the bent portion 12;
wherein, set gradually diaphragm assembly 3 and apron 4 on the demonstration side surface of panel body 11 and specifically include: a fourth adhesive layer 31, a polarizer 32, a fifth adhesive layer 33, and a cover plate 4 are sequentially provided on the display-side surface of the panel body 11.
The second supporting layer 6 is disposed between the cover plate 4 and the bent portion 12, specifically, the second supporting layer 6 can be adhered to the surface of the cover plate 4 corresponding to the bent portion 12, and when the cover plate 4 is adhered to the fifth adhesive layer 33, the second supporting layer 6 is also disposed between the cover plate 4 and the bent portion 12. This facilitates the provision of the second support layer 6, simplifies the assembly steps of the display module, and thus is advantageous in improving the assembly efficiency.
Of course, in addition to this, the second support layer 6 may also be disposed between the cover plate 4 and the bent portion 12 after the cover plate 4 is completely bonded to the fifth adhesive layer 33.
While the membrane module 3 is disposed on the display side surface of the panel body 11, the curing adhesive layer 122 may be coated, so that the curing adhesive layer 122 covers the substrate 121 of the bending portion 12.
S4, as shown in (4) in fig. 9, removing the back film 15 on the region to be bent of the bending portion 12 (i.e. the region for forming the arch-shaped segment of the bending portion 12) to divide the back film 15 into a first back film 13 covering the panel body 11 and a second back film 14 covering the bending portion 12;
the method for removing the back film 15 on the region to be bent is similar to the method for removing the upper back film 16, and the removal may be performed by using a laser or a chemical method, which is not limited in this respect.
S5, as shown in (5) in fig. 9, providing a first support layer 5 on a side of the first back film 13 facing away from the panel body 11;
the first supporting layer 5 may be directly bonded to the back surface of the panel body 11, or may be bonded to the second steel sheet layer 7 located on the back side of the panel body 11, which is not limited herein.
S6, as shown in fig. 9 (6), folding the folded portion 12 so that the second back film 14 faces the first support layer 5;
the second back film 14 and the first support layer 5 are opposite, specifically, an orthographic projection of the second back film 14 on the flexible display panel 1 overlaps with an orthographic projection of the first support layer 5 on the flexible display panel 1.
Before the bending portion 12 is bent, the display module shown in (5) in fig. 9 needs to be turned upside down, that is, the cover plate 4 is disposed on the panel carrier, the second end of the bending portion 12 is disposed on the circuit board carrier, and then the circuit board carrier is turned over relative to the panel carrier, so as to bend the bending portion 12.
S7, as shown in fig. 9 (7), the folded portion 12 is pressed against the first support layer 5, and the second back film 14 is bonded to the first support layer 5.
After the second back film 14 and the first support layer 5 are aligned, the bending part 12 is vertically pressed to the first support layer 5 by a pressing head, and the second back film 14 and the first support layer 5 are bonded under the pressure of the pressing head.
In some embodiments, as shown in (6) in fig. 9, S6 includes: the bending part 12 is bent so that the second back film 14 is opposite to the first support layer 5, and the side edge of the arch section of the first back film 13 close to the bending part 12 exceeds the side edge of the arch section of the second back film 14 close to the bending part 12, that is, the bending part 12 is pulled to the left side by a distance, so that the side edge of the arch section of the second back film 14 close to the bending part 12 is staggered with the side edge of the bending section of the first back film 13 close to the bending part 12. Therefore, the transition from the arch-shaped section to the first straight section (the part of the bent section 12 above the second back film 14 in the figure) of the bent section 12 is more gradual, the stress at the joint of the bent section 12 and the second back film 14 is improved, and the risk of breaking the metal wire on the bent section 12 is greatly reduced; at the same time, the risk of collision of the arched section of the bending part 12 with the front case sidewall 212 during the assembly of the display module 200 with the front case 210 can be greatly reduced.
As shown in fig. 10 and 11, fig. 10 is a schematic view illustrating an assembly process of the display module shown in fig. 7, and the assembly method includes:
s1, as shown in (1) in fig. 10, providing a flexible display panel 1;
among them, the back side surface of the flexible display panel 1 is covered with a back film 15, and the display side surface of the flexible display panel 1 is covered with an upper back film 16.
S2, as shown in (2) of fig. 10, binding the circuit board 2 at one end of the bending portion 12 of the flexible display panel 1 away from the panel body 11;
s3, as shown in (3) in fig. 10, disposing the membrane module 3 and the cover plate 4 in this order on the display-side surface of the panel body 11, and disposing the second support layer 6 between the cover plate 4 and the bent portion 12;
wherein, set gradually diaphragm assembly 3 and apron 4 on the demonstration side surface of panel body 11 and specifically include: a first adhesive layer 34, a polarizer 32, a second adhesive layer 35, a touch panel 36, a third adhesive layer 37, and a cover plate 4 are sequentially provided on the display-side surface of the panel body 11.
After the touch panel 36 is bonded to the second adhesive layer 35, one end of the flexible printed circuit 8 is bonded to one edge of the touch panel 36 close to the bending portion 12, and the other end is bonded to the circuit board 2.
As shown in fig. 8, when the second support layer 6 is disposed, the second support layer 6 needs to be disposed in the first direction X in a staggered manner with respect to the flexible printed circuit 8, so as to avoid structural interference between the second support layer 6 and the flexible printed circuit 8.
S4, as shown in (4) in fig. 10, removing the back film 15 on the region to be bent of the bending portion 12 to divide the back film into a first back film 13 covering the panel body 11 and a second back film 14 covering the bending portion 12;
s5, as shown in (5) in fig. 10, providing a first support layer 5 on a side of the first back film 13 facing away from the panel body 11;
s6, as shown in fig. 10 (6), folding the folded portion 12 so that the second back film 14 faces the first support layer 5;
s7, as shown in fig. 10 (7), the folded portion 12 is pressed against the first support layer 5, and the second back film 14 is bonded to the first support layer 5.
The same steps in the assembly method shown in fig. 10 as those in the assembly method shown in fig. 9 may specifically refer to the description in the assembly method shown in fig. 9, and are not described again here.
The same or similar features in the embodiment of the assembly method of the display device as those in the embodiment of the product of the display device may be referred to the description of the embodiment of the product of the display device, and are not repeated herein.
In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can think of the changes or substitutions within the technical scope of the present invention, and all shall be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (11)
1. A display assembly, comprising:
the flexible display panel comprises a panel body and a bending part, wherein along the extension direction of the bending part, the first end of the bending part is connected with one side edge of the panel body, and the second end of the bending part is positioned at the back side of the panel body;
the circuit board is arranged on the back side of the panel body and is connected with the second end of the bending part;
the membrane assembly is arranged on the display side of the panel body in a laminated mode and comprises at least one of a polaroid and a touch panel;
the cover plate is arranged on one side, far away from the panel body, of the membrane assembly in a stacked mode;
the first supporting layer is arranged on the back side of the panel body in a laminated mode and is positioned between the panel body and the bent portion;
the second support layer is arranged at the first end of the bent part and is positioned between the cover plate and the bent part, and the second support layer is configured to support the bent part.
2. The display assembly of claim 1,
the second supporting layer is an elastic supporting layer or a rigid supporting layer, one side surface of the second supporting layer is adhered to the cover plate, and the other side surface of the second supporting layer is abutted to the bending part.
3. The display assembly of claim 2, wherein the resilient support layer is a PET layer or a rubber layer; the rigid support layer is a first steel sheet layer.
4. A display assembly according to any of claims 1 to 3, further comprising:
the first back film is arranged on the back surface of the panel body in a laminated mode, and a part of the first back film is located between the first supporting layer and the panel body;
the second back film is arranged between the first supporting layer and the bending part in a laminated mode;
the first back membrane is close to the side edge of the arched section of the bending part and exceeds the second back membrane to the outside of the side edge of the arched section of the bending part.
5. The display assembly according to claim 4, wherein the first back film is close to the side edge of the arched section of the bending portion, and the distance beyond the second back film is in a range of 30-90 μm.
6. The display module according to any one of claims 1 to 3, wherein the bending portion comprises a substrate connected between the panel body and the circuit board, and a cured adhesive layer covering an outer surface of the substrate;
and along the extending direction of the bent part, one end of the solidified glue layer is bonded with the edge of the membrane component, and the other end of the solidified glue layer is positioned at the joint of the base body and the circuit board.
7. The display assembly of any of claims 1-3, further comprising: and the second steel sheet layer is arranged on the back side of the panel body in a stacked mode, and a part of the second steel sheet layer is located between the panel body and the first supporting layer.
8. A display assembly according to any of claims 1 to 3,
the diaphragm assembly comprises a touch panel, and the touch panel and the panel body are arranged in a split manner;
the display assembly further comprises a flexible circuit board, one end of the flexible circuit board is connected with one side edge of the touch panel, and the other end of the flexible circuit board is connected with the circuit board;
along a first direction, the second supporting layer and the flexible circuit board are arranged in a staggered mode, and the first direction is perpendicular to the thickness direction of the panel body and the extending direction of the bending portion.
9. The display module according to claim 8, wherein the film assembly comprises a first adhesive layer, a polarizer, a second adhesive layer, the touch panel and a third adhesive layer, which are sequentially stacked, the first adhesive layer is located between the polarizer and the panel body, and the third adhesive layer is located between the touch panel and the cover plate.
10. A display assembly according to any of claims 1 to 3,
the flexible display panel is a flexible display panel integrated with a touch layer;
the diaphragm assembly comprises a fourth bonding layer, the polaroid and a fifth bonding layer which are sequentially stacked, wherein the fourth bonding layer is positioned between the polaroid and the panel body, and the fifth bonding layer is positioned between the polaroid and the cover plate;
along a first direction, the size of the second supporting layer is adapted to the size of the bent portion, and the first direction is perpendicular to the thickness direction of the panel body and the extending direction of the bent portion.
11. A display device comprising a housing and the display module of any one of claims 1 to 10, wherein the display module is disposed on the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021683659.9U CN212322555U (en) | 2020-08-13 | 2020-08-13 | Display assembly and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021683659.9U CN212322555U (en) | 2020-08-13 | 2020-08-13 | Display assembly and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212322555U true CN212322555U (en) | 2021-01-08 |
Family
ID=74035735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021683659.9U Active CN212322555U (en) | 2020-08-13 | 2020-08-13 | Display assembly and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212322555U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112786807A (en) * | 2021-01-12 | 2021-05-11 | 武汉华星光电半导体显示技术有限公司 | Flexible display device and preparation method thereof |
| CN113707030A (en) * | 2021-09-09 | 2021-11-26 | 武汉华星光电半导体显示技术有限公司 | Flexible display module and display terminal |
| WO2022188418A1 (en) * | 2021-03-12 | 2022-09-15 | 京东方科技集团股份有限公司 | Display panel and display device |
-
2020
- 2020-08-13 CN CN202021683659.9U patent/CN212322555U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112786807A (en) * | 2021-01-12 | 2021-05-11 | 武汉华星光电半导体显示技术有限公司 | Flexible display device and preparation method thereof |
| WO2022188418A1 (en) * | 2021-03-12 | 2022-09-15 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN113707030A (en) * | 2021-09-09 | 2021-11-26 | 武汉华星光电半导体显示技术有限公司 | Flexible display module and display terminal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111816082A (en) | Display assembly, assembling method thereof and display device | |
| CN214476074U (en) | Flexible display module | |
| WO2021233001A1 (en) | Display assembly, manufacturing method therefor, and display device | |
| CN212322555U (en) | Display assembly and display device | |
| CN111063262B (en) | Flexible display module and manufacturing method thereof | |
| CN109215521B (en) | Display module, electronic equipment and manufacturing method of display module | |
| EP2946643B1 (en) | Method and apparatus for coupling an active display portion and substrate | |
| EP3346676B1 (en) | Display screen assembly, method for assembling display screen assembly and electronic device | |
| CN106165147B (en) | Mobile device | |
| WO2009104461A1 (en) | Touch panel and method for manufacturing the same | |
| CN113436530B (en) | Display module, manufacturing method thereof and display device | |
| EP3346357B1 (en) | Display screen assembly, method for assembling display screen assembly and electronic device | |
| CN112351125A (en) | Electronic equipment, display unit, display screen assembly and attaching method thereof | |
| CN114093274A (en) | Display device and display terminal | |
| CN209859953U (en) | Display screen and display device | |
| CN108966485A (en) | Circuit board assemblies, electronic equipment, display screen device and its assembly method | |
| JP5248788B2 (en) | Touch panel, manufacturing method thereof, and electronic device | |
| CN114181641B (en) | Composite adhesive tape and display device | |
| CN109061962B (en) | Display panel, manufacturing method thereof and display device | |
| JP2016061977A (en) | Display device and portable terminal apparatus | |
| CN113471258B (en) | Display device | |
| CN114267254A (en) | Display module, manufacturing method thereof and display device | |
| JP2023548618A (en) | Electronics | |
| CN113539093A (en) | Display panel and display device | |
| CN108957840B (en) | Display module, display device, polarizer and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |