CN108052233B - Display panel and display device - Google Patents

Display panel and display device Download PDF

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Publication number
CN108052233B
CN108052233B CN201810004750.4A CN201810004750A CN108052233B CN 108052233 B CN108052233 B CN 108052233B CN 201810004750 A CN201810004750 A CN 201810004750A CN 108052233 B CN108052233 B CN 108052233B
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China
Prior art keywords
bendable
layer
display
area
touch
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Active
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CN201810004750.4A
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CN108052233A (en
Inventor
于泉鹏
刘雪宁
曾洋
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Shanghai Tianma Microelectronics Co Ltd
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Shanghai Tianma Microelectronics Co Ltd
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Priority to CN201810004750.4A priority Critical patent/CN108052233B/en
Publication of CN108052233A publication Critical patent/CN108052233A/en
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    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412Digitisers structurally integrated in a display
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04102Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper

Abstract

The embodiment of the invention discloses a display panel and a display device. The display panel comprises a touch functional layer and a first flexible circuit board electrically connected with the touch functional layer; the touch functional layer comprises a first bendable part, the first bendable part is located in the special-shaped area, the first bendable part is formed by extending the display area from the fourth edge to the non-display area, the first flexible circuit board is bound on the first bendable part, and the first flexible circuit board is bent to one side, back to the light emitting surface, of the display panel from the special-shaped area through the first bendable part. The embodiment of the invention solves the problems that the frame is further narrowed and limited and the wires on the bendable part have short circuit and open circuit risks, and further improves the screen occupation ratio and the working reliability of the display panel.

Description

Display panel and display device
Technical Field
The present invention relates to display technologies, and in particular, to a display panel and a display device.
Background
As the display screen is more widely used, the wide screen technology becomes an important technical item, and meanwhile, the technology of the narrow frame of the display panel is more and more important. Advanced electronic products, especially portable electronic products, are increasingly moving towards narrow bezel designs.
In order to increase the screen occupation ratio of electronic products, the non-display area on the display panel is compressed to be smaller and smaller. For example, in order to compress a non-display area as much as possible in a display screen of a mobile phone, there has been a technology in which a notch (irregular area) is provided at an upper end of a display area, and a device such as a front camera and a headphone of the mobile phone is provided in the notch. For another example, the frame of the display panel is designed to be narrower by bending the portions of the functional layers (such as the display functional layer, the touch functional layer, and the pressure functional layer) in the display panel, which are located in the non-display area, to the side of the display panel opposite to the light emitting surface of the display panel.
However, the bent portions of the functional layers are usually bent from the same frame (lower frame) of the display panel, so that the bent portions are stacked on the side of the display panel, and the stacked thickness is at least the sum of the thicknesses of the bent portions, which limits the narrowing design of the frame; moreover, the parts of the bending parts on the side surfaces of the display panel are in mutual contact, so that not only can short circuits of the wires on different bending parts be caused, but also the open circuits of the wires on the bending parts can be caused due to the friction among the contacted bending parts, and the display effect, the touch effect and the like of the display panel are further influenced.
Disclosure of Invention
The invention provides a display panel and a display device, which aim to solve the problems that the frame is further narrowed and limited, and wires on a bent part have short circuit and open circuit risks, and further improve the screen occupation ratio and the working reliability of the display panel.
In a first aspect, an embodiment of the present invention provides a display panel, including a display area and a non-display area surrounding the display area, where the display area has a first edge and a second edge that are arranged oppositely, the first edge extends along a first direction, the display area has a notch in the extending direction of the second edge, and at least a part of the notch extends towards the display area to form an irregular area;
in a second direction, the length of the part of the display area corresponding to the special-shaped area is smaller than the length of the rest part of the display area, wherein the second direction is vertical to the first direction;
the special-shaped area is provided with three edges adjacent to the display area, namely a third edge, a fourth edge and a fifth edge, wherein the third edge and the fifth edge are arranged oppositely;
the display panel further comprises a touch functional layer and a first flexible circuit board electrically connected with the touch functional layer;
the touch functional layer comprises a first bendable part, the first bendable part is located in the special-shaped area, the first bendable part is formed by extending the display area from the fourth edge to the non-display area, the first flexible circuit board is bound on the first bendable part, and the first flexible circuit board is bent to one side, back to the light emitting surface, of the display panel from the special-shaped area through the first bendable part.
In a second aspect, an embodiment of the present invention further provides a display device, including the display panel according to the first aspect.
In the embodiment of the invention, the existing special-shaped area on the display panel is utilized, the touch control functional layer is arranged into the first bendable part from the display area to the part of the special-shaped area extending from the fourth edge of the special-shaped area to the non-display area, and the first flexible circuit board is bound on the first bendable part, so that the first flexible circuit board is electrically connected with the touch control functional layer and is bent from the special-shaped area to the side of the display panel opposite to the light emitting surface of the display panel through the first bendable part. According to the technical scheme, the first bendable part of the touch control functional layer in the plurality of bendable parts of the lower frame (the non-display area adjacent to the first edge of the display area) is arranged in the special-shaped area, so that the number of the bendable parts of the lower frame is reduced, the thickness of the bendable parts stacked along the second direction (the width direction of the lower frame) is reduced, the width of the lower frame can be further compressed, and the screen occupation ratio is improved; in addition, the first bendable part of the touch functional layer, provided with the wiring, is arranged in the special-shaped area, so that the breakage of the wiring on the first bendable part or the short circuit with other wirings can be avoided, the normal touch function of the display panel is ensured, and the working reliability of the display panel is improved.
Drawings
Fig. 1 is a schematic plan view of a conventional display panel;
FIG. 2 is a schematic sectional view taken along the line A1-A2 in FIG. 1;
fig. 3 is a schematic plan view illustrating a display panel according to an embodiment of the present invention;
FIG. 4 is a schematic sectional view taken along line B1-B2 in FIG. 3;
fig. 5 is a schematic plan structure diagram of a touch functional layer according to an embodiment of the present invention;
fig. 6 is a schematic cross-sectional structure diagram of a touch functional layer provided in an embodiment of the present invention when the touch functional layer is not bent;
FIG. 7 is a schematic view of a further cross-sectional view taken along line B1-B2 in FIG. 3;
fig. 8 is a schematic cross-sectional structure diagram of a touch functional layer and a display functional layer according to an embodiment of the present invention;
fig. 9 is a graph illustrating a relationship between the elastic modulus of the optical adhesive layer and the stress of the touch functional layer and the stress of the display functional layer according to the embodiment of the present invention;
fig. 10 is a schematic cross-sectional structure view of another touch functional layer and a display functional layer according to an embodiment of the present invention;
fig. 11 is a schematic plan structure view of another touch functional layer according to an embodiment of the present invention;
FIG. 12 is a schematic view of another cross-sectional structure taken along the direction B1-B2 in FIG. 3.
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.
Fig. 1 is a schematic plan view of a conventional display panel; FIG. 2 is a schematic sectional view taken along the line A1-A2 in FIG. 1. Referring to fig. 1 and 2, a conventional shaped screen includes a display area 100, a non-display area 200 surrounding the display area 100, and a shaped area 300 formed at a gap at an upper edge of the display area 100, and the non-display area 200 includes a lower frame 400 opposite to the shaped area 300. The display screen generally has basic functions such as a display function and a touch function, and correspondingly, the special-shaped screen further comprises a touch functional layer 10 and a display functional layer 20. In order to realize the driving of touch and display, generally, a touch flexible circuit board 501 is bound to a binding area of a touch functional layer 10, a display flexible circuit board 502 is bound to a binding area of a display functional layer 20, a touch driving chip electrically connected to the touch functional layer 10 and a display driving chip electrically connected to the display functional layer 20 are respectively disposed on the touch flexible circuit board 501 and the display flexible circuit board 502, and the touch driving chip and the display driving chip are respectively bent from a lower frame 400 to a side of the special-shaped screen opposite to a light emitting surface thereof through the touch flexible circuit board 501 and the display flexible circuit board 502. However, the width of the binding region and the thicknesses of the touch flexible circuit board 501 and the display flexible circuit board 502 bent to the side of the special-shaped screen jointly determine the width of the lower frame 400, so that the width of the lower frame 400 is greater than 3 mm. Therefore, the existing design limits the realization of a display screen with a narrower frame, and is not beneficial to realizing a full-screen. In view of the foregoing problems, embodiments of the present invention provide a display panel and a display device, and specific embodiments are as follows.
Fig. 3 is a schematic plan view illustrating a display panel according to an embodiment of the present invention; FIG. 4 is a schematic sectional view taken along line B1-B2 in FIG. 3; fig. 5 is a schematic plan structure view of a touch functional layer according to an embodiment of the present invention. Referring to fig. 3, the display panel provided in this embodiment includes a display area 100 and a non-display area 200 surrounding the display area 100, the display area 100 has a first side 101 and a second side 102 that are opposite to each other, the first side 101 extends along a first direction x, the display area 100 has a gap in the extending direction of the second side 102, and at least a portion of the gap extends towards the display area 100 to form an irregular area 300;
the length a of the portion of the display area 100 corresponding to the shaped area 300 is smaller than the length b of the remaining portion of the display area 100 in a second direction y, wherein the second direction y is perpendicular to the first direction x;
the special-shaped area 300 has three sides adjacent to the display area 100, namely a third side 103, a fourth side 104 and a fifth side 105, wherein the third side 103 and the fifth side 105 are arranged oppositely;
referring to fig. 4, the display panel further includes a touch functional layer 10 and a first flexible circuit board 30 electrically connected to the touch functional layer 10;
referring to fig. 4 and 5, the touch functional layer 10 includes a first bendable portion 11, the first bendable portion 11 is located in the special-shaped area 300, and the first bendable portion 11 is formed by extending the touch functional layer 10 from the display area 100 to the non-display area 200 through the fourth edge 104, the first flexible circuit board 30 is bound to the first bendable portion 11, and the first flexible circuit board 30 is bent from the special-shaped area 300 to a side of the display panel opposite to the light emitting surface through the first bendable portion 11. In this embodiment, the first bendable portion 11 is bent with a dotted line 106 in fig. 5 as a bending line, and the dotted line 106 is overlapped with the fourth edge 104. It can be understood that, in the display panel, each film layer located on one side of the touch functional layer close to the display functional layer is provided with a notch, and the notch is arranged corresponding to the special-shaped area, so that the bendable portion of the touch functional layer can be bent from the special-shaped area to the side of the display panel opposite to the light emitting surface of the display panel. One side of the touch functional layer, which is far away from the display functional layer, can be provided with a transparent cover plate for protecting the display panel, and the cover plate can not comprise a notch, so that components in the special-shaped area are protected from being influenced by the external environment.
In the present embodiment, the existing special-shaped area 300 on the display panel is utilized, the touch-control functional layer 10 is configured to be the first bendable portion 11 by extending the display area 100 from the fourth edge 104 of the special-shaped area 300 to the non-display area 200 and locating at the part of the special-shaped area 300, and the first flexible circuit board 30 is bound to the first bendable portion 11, so that the first flexible circuit board 30 is electrically connected to the touch-control functional layer 10, and the first flexible circuit board 30 is bent from the special-shaped area 300 to the side of the display panel opposite to the light-emitting surface thereof through the first bendable portion 11. When the touch functional layer is prepared, the first bendable part of the touch functional layer is arranged in the special-shaped area, so that the number of the bendable parts positioned on the lower frame can be reduced, the thickness of the bendable parts stacked along the second direction can be reduced, the width of the lower frame can be further compressed, and the screen occupation ratio can be improved; meanwhile, the first bendable part of the touch functional layer, provided with the wiring, is arranged in the special-shaped area, so that the breakage of the wiring on the first bendable part or the short circuit with other wirings can be avoided, the normal touch function of the display panel is ensured, and the working reliability of the display panel is improved. In addition, the first bendable part is a part extending out of the touch functional layer, and the first flexible circuit board is bound on the first bendable part and is bent to the back of the display panel through the first bendable part, so that on one hand, the situation that a binding area is arranged on the part, located in the display area, of the touch functional layer is avoided, and the effective display area of the display panel is not influenced; on the other hand, in the prior art, the first flexible circuit board is bound on the side, away from the display function layer, of the touch function layer, when the first flexible circuit board is bent, the first flexible circuit board is easily separated from the touch function layer, so that the electrical connection fails, and the touch effect is influenced; in a third aspect, the first bendable portion is located in the special-shaped area, so that the width of the frame of the display panel is not additionally increased, and the frame of the display panel is further reduced.
For example, referring to fig. 4, the display panel of this embodiment may further include a display function layer, where the display function layer includes a flexible substrate 21 and a display layer 22 located on the flexible substrate 21, and the touch function layer 10 is attached to a side of the display function layer away from the flexible substrate 21; referring to fig. 3, the non-display area 200 includes a lower border 400 adjacent to the first side 101 of the display area 100. The flexible substrate 21 includes a binding region, the binding region is located in the lower frame 400, the binding region is bound with the display flexible circuit board 502, and the display flexible circuit board 502 is bent from the lower frame 400 to a side of the display panel opposite to the light emitting surface thereof.
Comparing fig. 2 and fig. 4, it is obvious that the width of the lower frame 400 of the present embodiment is substantially equal to the sum of the width of the bonding area on the flexible substrate 21 and the thickness of the display flexible circuit board 502 bent to the side of the display panel, and compared with fig. 2, the width of the lower frame of the present embodiment is reduced by the thickness of one touch flexible circuit board 501, and the lower frame 400 is obviously narrowed. Moreover, the first bendable part 11 of the touch functional layer 10 is located in the special-shaped area, which does not increase the area of the non-display area nor decrease the effective display area of the display panel.
Optionally, referring to fig. 6 and fig. 7, the touch functional layer includes a touch substrate 12 and a touch electrode layer 13 located on the touch substrate 12, the touch electrode layer 13 includes a plurality of touch traces 131, and the touch traces 131 extend to the first bendable portion 11;
the touch functional layer 10 is attached to a side of the display functional layer away from the flexible substrate 21, the touch electrode layer 13 is located between the touch substrate 12 and the display functional layer (display layer 22), and the first flexible circuit board 30 is bound to a side of the touch functional layer 10 close to the display functional layer.
Therefore, the touch functional layer 10 is reversely attached to the display functional layer, that is, the touch electrode layer 13 is directly attached to the display functional layer, and compared to the structure in which the touch substrate 12 is directly attached to the display functional layer, when the first bendable part 11 is bent, the touch electrode layer 13 is located on the inner side, and the touch substrate 12 is located on the outer side, the structure of the embodiment can reduce the bending tension of the touch trace 131 located on the first bendable part 11, thereby reducing the risk of breakage of the touch trace 131.
Optionally, as shown in fig. 8, the flexible substrate 21 includes a second bendable portion 211, the second bendable portion 211 is located in the irregular area, the second bendable portion 211 is formed by extending the flexible substrate 21 from the display area to the non-display area through a fourth edge, and the second bendable portion 211 and the first bendable portion 11 are stacked.
The touch functional layer is attached to the display functional layer through the optical adhesive layer 50, and the first bendable portion 11 is attached to the second bendable portion 211 through the optical adhesive layer 50.
The flexible substrate 21 extends to the special-shaped area to form a second bendable portion 211, and the optical adhesive layer 50 is disposed between the second bendable portion 211 and the first bendable portion 11, so that the first bendable portion 11 and the second bendable portion 211 form a whole, and the touch electrode layer 13 is located between the touch substrate 12 and the second bendable portion 211, when the first bendable portion is bent, the touch trace located in the special-shaped area can be closer to a neutral surface, which is a mechanical neutral surface representing a surface where each point with a zero normal stress value is located. Therefore, the closer the touch trace is to the neutral plane, the less the touch trace is stressed and the less the touch trace is prone to break when the first bendable portion 11 is bent.
For example, in the present embodiment, when the elastic modulus of the optical adhesive layer 50 is different, the tensile conditions of the first bendable part 11 and the second bendable part 211 are simulated, wherein the thickness of the optical adhesive layer 50 is 5 μm, the thickness of the first bendable part is 10 μm, and the thickness of the second bendable part is 15 μm. As can be seen from fig. 9 and table 1, when the elastic modulus of the optical adhesive layer 50 is 33MPa, the touch traces are relatively close to the neutral plane, and at this time, the touch traces are not easily broken.
TABLE 1
In the above embodiments, the thickness of the optical adhesive layer 50 in the irregular area portion may be greater than, less than or equal to the thickness of the optical adhesive layer 50 in the display area portion. For example, during the manufacturing process, the thickness of the optical adhesive layer 50 is uniform, which facilitates the manufacturing; in some cases, in order to fill up the step formed by the film layer in the display area and form a flat plane, the thickness of the optical adhesive layer 50 in the display area may be larger; if the step to be filled in the irregular area is larger, the thickness of the optical adhesive layer 50 at the irregular area may be larger. In addition, the optical adhesive layer can also be used for adjusting a neutral plane of a structure formed by the first bendable part and the second bendable part.
Optionally, as shown in fig. 10, the display layer 22 includes at least one organic film layer, and a neutral plane adjustment layer 60 is further included between the second bendable portion 211 and the optical adhesive layer 50 in the irregular area;
the neutral surface adjusting layer 60 includes at least one film layer, and one of the film layers of the neutral surface adjusting layer 60 is made of the same material as at least one of the organic film layers, that is, the one of the film layers of the neutral surface adjusting layer 60 and at least one of the organic film layers are prepared by the same process. Alternatively, the neutral plane adjustment layer 60 is formed of all the organic film layers in the display layer 22.
The neutral plane adjusting layer 60 is arranged between the second bendable portion 211 and the optical adhesive layer 50, the neutral plane adjusting requirement can be met, the thickness of the neutral plane adjusting layer 60 and the number of film layers forming the neutral plane adjusting layer 60 are adjusted through testing, the touch wiring can be closer to the neutral plane, and the reliability of the touch function is further improved.
Optionally, the organic film layer includes a pixel defining layer and a planarizing layer;
the display area comprises a plurality of pixels, and the pixel definition layer is used for limiting light emitting areas of the pixels;
the display layer comprises a thin film transistor array layer and a light-emitting layer, the light-emitting layer comprises a plurality of light-emitting elements, the planarization layer is positioned between the thin film transistor array layer and the light-emitting layer, and the planarization layer is used for planarizing the surface of the film layer;
one of the film layers of the neutral plane adjusting layer is the same material as the pixel defining layer, and/or one of the film layers of the neutral plane adjusting layer is the same material as the planarizing layer. That is, one of the film layers of the neutral plane adjustment layer and the pixel defining layer may be prepared by the same process, and/or one of the film layers of the neutral plane adjustment layer and the planarization layer may be prepared by the same process. Therefore, the process flow can be saved, and the production efficiency can be improved.
Alternatively, referring to fig. 8 and 10, in the second direction y, the length c of the first bendable portion 11 is greater than the length d of the second bendable portion 211;
the first bendable portion 11 has a first area 110, the first area 110 is located on a side of the first bendable portion 11 away from the fourth side, and the first area 110 and the second bendable portion 211 are not overlapped;
the first flexible circuit board 30 is bound to the first region 110 of the first bendable part 11.
Therefore, on one hand, there may be enough area (the first area 110) to bind the first flexible circuit board 30, and the first flexible circuit board is located on the side of the display panel opposite to the light emitting surface thereof through bending of the first bending part, that is, the first flexible circuit board is located on the back surface of the display panel; on the other hand, when bending, the overlapped portion of the first bendable portion 11 and the second bendable portion 211 can play a role of buffering tension, so as to prevent the touch trace from being broken.
Alternatively, as shown in fig. 11, the first bendable portion 11 coincides with the shaped area. At this time, the entire rectangular touch functional layer 10 may be prepared, and then cut to the position of the dotted line 106 along the third edge and the fifth edge of the touch functional layer 10 corresponding to the special-shaped area, so as to directly form the first bendable portion 11, and it is not necessary to etch a part of the touch functional layer 10 located in the special-shaped area.
Optionally, as shown in fig. 3 and 12, the non-display area 200 includes a bending area (located on the lower frame 400) adjacent to the first edge 101 of the display area 100, and the flexible substrate 21 further includes a third bendable portion 212 extending to the bending area;
the display panel further includes a second flexible circuit board 40, the second flexible circuit board 40 is bound to the third bendable portion 212, and the second flexible circuit board 40 is bent from the bending region to a side of the display panel opposite to the light emitting surface thereof along a bending axis parallel to the first direction through the third bendable portion 212.
Therefore, on one hand, the third bendable part 212 is a part from which the flexible substrate 21 directly extends, the second flexible circuit board 40 is bound to the third bendable part 212, and by bending the third bendable part 212, the second flexible circuit board is located on the side of the display panel opposite to the light emitting surface thereof, and the binding part binding the second flexible circuit board is located on the back surface of the display panel, so that the influence of the binding part on the size of the non-display area of the display panel (the size of the lower frame of the display panel) is avoided, and the width of the lower frame 400 is further reduced; on the other hand, in the prior art, set up the binding area in one side that flexible substrate 21 is close to the touch-control functional layer, bind second flexible circuit board 40 in this binding area, when buckling second flexible circuit board 40, make second flexible circuit board 40 separate from flexible substrate 21 easily, lead to the electric connection inefficacy, influence the display effect, compare in prior art, directly buckle the extension of flexible substrate 21 for have good electric connection characteristic between second flexible circuit board and the flexible substrate.
In addition, the embodiment of the invention also provides a display device, and the display device comprises the display panel provided by any embodiment of the invention. The display device may be a mobile phone, a computer, an intelligent wearable device, and the like, which is not particularly limited in this embodiment of the present invention.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. 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 modifications, rearrangements, combinations 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 by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (10)

1. A display panel is characterized by comprising a display area and a non-display area surrounding the display area, wherein the display area is provided with a first edge and a second edge which are arranged oppositely, the first edge extends along a first direction, the display area is provided with a notch in the extending direction of the second edge, and at least part of the notch extends towards the display area to form an irregular area;
in a second direction, the length of the portion of the display area corresponding to the shaped area is less than the length of the remainder of the display area, wherein the second direction is perpendicular to the first direction;
the special-shaped area is provided with three sides adjacent to the display area, namely a third side, a fourth side and a fifth side, wherein the third side and the fifth side are arranged oppositely;
the display panel further comprises a touch functional layer and a first flexible circuit board electrically connected with the touch functional layer;
the touch control functional layer comprises a first bendable part, the first bendable part is located in the special-shaped area, the first bendable part is formed by extending the display area to the fourth side of the non-display area, the first bendable part is provided with touch control wiring, the first flexible circuit board is bound to the first bendable part, the first flexible circuit board is electrically connected with the first bendable part, and the first flexible circuit board passes through the first bendable part, so that the special-shaped area is bent to one side of the display panel, which is opposite to the light emitting surface.
2. The display panel according to claim 1, further comprising a display function layer including a flexible substrate and a display layer on the flexible substrate;
the touch functional layer comprises a touch substrate and a touch electrode layer positioned on the touch substrate, the touch electrode layer comprises a plurality of touch wires, and the touch wires extend to the first bendable part;
the touch control functional layer is attached to one side, far away from the flexible substrate, of the display functional layer, the touch control electrode layer is located between the touch control substrate and the display functional layer, and the first flexible circuit board is bound to one side, close to the display functional layer, of the touch control functional layer.
3. The display panel according to claim 2, wherein the flexible substrate includes a second bendable portion, the second bendable portion is located in the irregular area, and the second bendable portion is formed by extending the flexible substrate from the display area to the non-display area through the fourth edge, and the second bendable portion and the first bendable portion are stacked.
4. The display panel according to claim 3, wherein the touch functional layer is attached to the display functional layer through an optical adhesive layer, and the first bendable portion is attached to the second bendable portion through the optical adhesive layer.
5. The display panel according to claim 4, wherein the display layer comprises at least one organic film layer, and a neutral plane adjusting layer is further included between the second bendable portion and the optical adhesive layer in the irregular area;
the neutral surface adjusting layer comprises at least one film layer, and the material of one film layer of the neutral surface adjusting layer is the same as that of at least one film layer of the organic film layers.
6. The display panel according to claim 5, wherein the organic film layer includes a pixel defining layer and a planarizing layer;
the display region includes a plurality of pixels, and the pixel defining layer is used for defining light emitting regions of the pixels;
the display layer comprises a thin film transistor array layer and a light-emitting layer, the planarization layer is positioned between the thin film transistor array layer and the light-emitting layer, and the planarization layer is used for planarizing the surface of the film layer;
one of the film layers of the neutral plane adjusting layer is made of the same material as the pixel defining layer, and/or one of the film layers of the neutral plane adjusting layer is made of the same material as the planarization layer.
7. The display panel according to claim 4, wherein along the second direction, the length of the first bendable portion is greater than the length of the second bendable portion;
the first bendable part is provided with a first area, the first area is positioned on one side of the first bendable part far away from the fourth edge, and the first area is not overlapped with the second bendable part;
the first flexible circuit board is bound to a first area of the first bendable part.
8. The display panel according to claim 7, wherein the first bendable portion is overlapped with the irregular area.
9. The display panel according to claim 2, wherein the non-display region comprises a bending region adjacent to the first edge of the display region, and the flexible substrate further comprises a third bendable portion extending to the bending region;
the display panel further comprises a second flexible circuit board, the second flexible circuit board is bound to the third bendable part, and the second flexible circuit board is bent from the bending area to one side of the display panel, which is opposite to the light emitting surface of the display panel, along a bending axis parallel to the first direction through the third bendable part.
10. A display device characterized by comprising the display panel according to any one of claims 1 to 9.
CN201810004750.4A 2018-01-03 2018-01-03 Display panel and display device Active CN108052233B (en)

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