CN109103345A - A kind of display panel and display device - Google Patents
A kind of display panel and display device Download PDFInfo
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- CN109103345A CN109103345A CN201810938826.0A CN201810938826A CN109103345A CN 109103345 A CN109103345 A CN 109103345A CN 201810938826 A CN201810938826 A CN 201810938826A CN 109103345 A CN109103345 A CN 109103345A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/844—Encapsulations
Abstract
The present invention provides a kind of display panel and display device.This kind of display panel includes the buffer layer being set on substrate, and buffer layer includes organic material；It is set to metal layer of the buffer layer far from substrate side, metal layer includes a plurality of metal lead wire；Display panel includes bent area, and in bent area, buffer layer includes multiple grooves, and metal lead wire is set in groove.Display device including above-mentioned display panel can alleviate the material stress that the metal lead wire of bending deformation is subject to.
Description
[technical field]
The present invention relates to field of display technology more particularly to a kind of display panel and display devices.
[background technique]
Currently, display technology has penetrated into the various aspects of people's daily life, and correspondingly, more and more materials and skill
Art is used for display screen.Now, the display screen of mainstream mainly has liquid crystal display and Organic Light Emitting Diode (OLED) display
Screen.Wherein, due to the self-luminosity energy of OLED display screen, the backlight module most to consume energy is eliminated compared to liquid crystal display, because
This has the advantages that more energy efficient；In addition, OLED display screen also has the characteristics that flexible bendable, by using flexible base board,
The multiple conductive layers sequentially formed on flexible base board, including thin film transistor (TFT) drive array layer, anode layer, organic luminous layer, yin
Pole layer and thin-film encapsulation layer, so that OLED display screen has excellent bent performance.
It is aobvious to flexibility as user is more and more vigorous to the flexible bendable of display terminal product or the demand of folding property
The requirement of the stability and number resistant to bending of showing product is higher and higher.But the metal lead wire of display panel is when repeating to bend
It is easy to be broken, causes display performance bad.
[summary of the invention]
In view of this, the present invention provides the preparation method of a kind of display panel, display device and display panel, to solve
The above problem of the prior art.
On the one hand, the present invention provides a kind of display panel, and the display panel includes substrate, and the display panel also wraps
It includes:
The buffer layer being set on the substrate, the buffer layer include organic material；
It is set to metal layer of the buffer layer far from the substrate side, the metal layer includes a plurality of metal lead wire；
The display panel includes bent area, and in the bent area, the buffer layer includes multiple grooves, and the metal
Lead is set in the groove.
Optionally, the display panel further includes bending front；The metal lead wire include flat shape the first bottom edge,
Second bottom edge；The length on first bottom edge is greater than the length on second bottom edge；First bottom edge is approximately parallel to described
Second bottom edge；Between first bottom edge and the positive spacing of bending are positive less than second bottom edge and the bending
Away from.
Optionally, the metal lead wire further includes the first bevel edge and the second bevel edge of flat shape；First bevel edge, institute
It states the second bevel edge and connects first bottom edge and second bottom edge；First bottom edge, second bottom edge, described first are tiltedly
Side, second bevel edge constitute trapezium structure；First bottom edge and first bevel edge constitute the first angle, first bottom
Side and second bevel edge constitute the second angle；First angle, second angle are 20 degree to 80 degree.
Optionally, the length of first bevel edge is approximately equal to the length of second bevel edge；First angle is approximate
Equal to second angle.
Optionally, the length of first bevel edge is less than the length of second bevel edge；First angle is than described
Two angles are 10 degree to 60 degree big.
Optionally, the metal lead wire further includes the first bevel edge and the second bevel edge of circular shape；First bevel edge, institute
State the approximate radian having the same of the second bevel edge and radius of curvature；First bevel edge, second bevel edge connection described first
Bottom edge and second bottom edge；First bottom edge, second bottom edge, first bevel edge, second bevel edge composition pair
The quadrilateral structure of title.
Optionally, the metal lead wire include the first bottom edge of flat shape, the second bottom edge, the first bevel edge, the second bevel edge,
Third bevel edge, the 4th bevel edge；First bottom edge is parallel to second bottom edge, and it is oblique that first bevel edge is parallel to the third
Side, second bevel edge are parallel to the 4th bevel edge；First bevel edge connects the 4th bevel edge, and second bevel edge connects
Connect the third bevel edge, first bevel edge, second bevel edge all connect first bottom edge, the third bevel edge, described
4th bevel edge all connects second bottom edge；First bottom edge, second bottom edge, first bevel edge, described second are tiltedly
Side, the third bevel edge, the 4th bevel edge constitute hexagonal structure；The angle of first bottom edge and first bevel edge,
The angle of first bottom edge and second bevel edge, the angle on second bottom edge and the third bevel edge, second bottom
The angle of side and the 4th bevel edge is all obtuse angle.
Optionally, the bent area includes the first bent area and the second bent area, the maximum bending of first bent area
Curvature is greater than the maximum bending curvature of second bent area；The metal lead wire includes positioned at the first of first bent area
Metal lead wire and the second metal lead wire positioned at second bent area；First angle of first metal lead wire or institute
Stating the second angle is first angle；First angle or second angle of second metal lead wire are second angle；
The first angle is less than the second angle.
Optionally, the bent area includes the first conductive layer and the second conductive layer, first conductive layer and the bending
Positive spacing is greater than second conductive layer and the positive spacing of bending；The metal lead wire includes being located at described first
The third metal lead wire of conductive layer and the 4th metal lead wire positioned at second conductive layer；The third metal lead wire it is described
First angle or second angle are third angle；First angle or second angle of 4th metal lead wire
For fourth angle；The third angle is less than the fourth angle.
Optionally, the metal lead wire includes fifth metal lead and the 6th metal lead wire, the fifth metal lead
Cross-sectional area is greater than the cross-sectional area of the 6th metal lead wire；First angle of the fifth metal lead or institute
Stating the second angle is the 5th angle；First angle or second angle of 6th metal lead wire are hexagonal degree；
5th angle is less than the hexagonal degree.
Optionally, the substrate uses polyimide material.
On the other hand, the present invention provides a kind of display device, and the display device includes the display panel.
Above-mentioned technical proposal has the following beneficial effects: that, when display panel bending, the organic material of buffer layer generates total
Cushion effect acts on metal lead wire.If groove setting suitably causes total buffer power approximately equal with the size of material stress, square
To approximately opposed, then total buffer power can offset material stress.The material that this metal lead wire for just alleviating bending deformation is subject to
Stress avoids material stress that metal lead wire is caused to be broken.
[Detailed description of the invention]
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this field
For those of ordinary skill, without creative efforts, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1 and Fig. 2 is a kind of cross-sectional view of the display panel 100 of one embodiment of the invention when not bending；
Fig. 3 is a kind of cross-sectional view of the display panel 100 of one embodiment of the invention in bending；
Fig. 4 is a kind of floor map of display panel 100 of one embodiment of the invention；
Fig. 5 is a kind of cross-sectional view of the display panel 500 of another embodiment of the present invention in its bent area；
Fig. 6 is a kind of cross-sectional view of the display panel 600 of another embodiment of the present invention in its bent area；
Fig. 7 is a kind of cross-sectional view of the display panel 700 of another embodiment of the present invention in its bent area；
Fig. 8 is a kind of cross-sectional view of the display panel 800 of another embodiment of the present invention in its bent area；
Fig. 9 is a kind of cross-sectional view of the display panel 900 of another embodiment of the present invention in its bent area；
Figure 10 is a kind of cross-sectional view of the display panel 1000 of another embodiment of the present invention in its bent area；
Figure 11 is a kind of schematic diagram of display device 1150 of another embodiment of the present invention；
Figure 12 A and 12B are a kind of schematic diagrames of display panel preparation method of another embodiment of the present invention.
[specific embodiment]
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
The term used in embodiments of the present invention is only to be not intended to be limiting merely for for the purpose of describing particular embodiments
The present invention.In the embodiment of the present invention and the "an" of singular used in the attached claims, " described " and "the"
It is also intended to including most forms, unless the context clearly indicates other meaning.
It should be appreciated that term "and/or" used herein is only a kind of incidence relation for describing affiliated partner, indicate
There may be three kinds of relationships, for example, A and/or B, can indicate: individualism A, exist simultaneously A and B, individualism B these three
Situation.In addition, character "/" herein, typicallys represent the relationship that forward-backward correlation object is a kind of "or".
Fig. 1 and Fig. 2 is a kind of cross-sectional view of the display panel 100 of one embodiment of the invention when not bending.Fig. 3 is
A kind of cross-sectional view of the display panel 100 of one embodiment of the invention in bending.Fig. 4 is that one embodiment of the invention one kind is aobvious
Show the floor map of panel 100.As shown in Figures 1 to 4, display panel 100 includes substrate 10.Display panel 100 further include:
The buffer layer 120 being set on substrate 10, buffer layer 120 include organic material 121；It is set on buffer layer 120 far from substrate
The metal layer of 10 sides, metal layer include a plurality of metal lead wire 110；Display panel includes bent area, in bent area, buffer layer
120 include multiple grooves 123, and metal lead wire 110 is set in groove 123.
As shown in figure 4, the metal layer of display panel 100 includes a plurality of metal lead wire 110, the trend of metal lead wire 110 is flat
Row in display panel 100 long side 140 and perpendicular to the short side of display panel 100 130.Display panel 100 can surround curved
Axis 150 is rolled over to bend.Bending axis 150 is parallel to short side 130 and perpendicular to long side 140.Metal lead wire 110 is perpendicular to bending axis
150。
When display panel 100 is bent around bending axis 150, metal lead wire 110 generates material stress 107 and acts on certainly
Body, material stress 107 are directed toward substrate 10.Metal lead wire 110 is susceptible to material stress 107 and is broken.If material stress 107
It is enough that metal lead wire 110 is caused to be broken, then this show that display panel 100 can not normally.
The display panel 100 of the embodiment of the present invention includes metal lead wire 110, buffer layer 120, and buffer layer 120 includes multiple
Groove 123, and metal lead wire 110 is set in groove 123.Buffer layer 120 can alleviate the material that metal lead wire 110 is subject to and answer
Power.When display panel 100 is bent around bending axis 150, the organic material 121 of buffer layer 120 generates total buffer power 109 and acts on
In metal lead wire 110.If groove setting suitably causes, total buffer power 109 is approximately equal with the size of material stress 107, direction
It is approximately opposed, then total buffer power 109 can offset material stress 107.This just alleviate bending deformation metal lead wire 110 by
Material stress 107, avoid material stress 107 cause metal lead wire 110 be broken.
As shown in Figure 1, display panel 100 further includes bending front 101；Metal lead wire 110 includes the first of flat shape
Bottom edge 111, the second bottom edge 112；The length on the first bottom edge 111 is greater than the length on the second bottom edge 112；First bottom edge 111 is approximate flat
Row is in the second bottom edge 112；The spacing on the first bottom edge 111 and bending front 101 less than the second bottom edge 112 and bends front 101
Spacing.For display panel 100 in bending towards one of surface, this surface is exactly bending front 101.Bending front
101 are located at the side on display panel 100 far from substrate 10.The length on the first bottom edge 111, the length on the second bottom edge 112 refer to
The size that first bottom edge 111, the second bottom edge 112 extend in the cross section of metal lead wire 110.
The first bottom edge 111 and the second bottom edge 112 of metal lead wire 110 make buffer layer 120 to the total slow of metal lead wire 110
Impulse force 109 is directed toward bending front 101.When display panel 100 is towards when bending positive 101 sides bending, metal lead wire 110 is generated
Material stress 107 acts on itself, and material stress 107 is directed toward substrate 10.Meanwhile the organic material 121 of buffer layer 120 is in two sides
Generate the first cushion effect, the second cushion effect acts on metal lead wire 110.Because the length on the first bottom edge 111 is greater than the second bottom edge
112 length, so the total buffer power 109 that the first cushion effect is synthesized with the second cushion effect can be directed toward bending front 101.Here
Material stress 107 be directed toward substrate 10, total buffer power 109 can be directed toward bending front 101, the direction of the two is approximately opposed.Such as
Fruit total buffer power 109 is approximately equal with the size of material stress 107, then total buffer power 109 can offset material stress 107.
The material stress 107 that this metal lead wire 110 for just alleviating bending deformation is subject to, avoids material stress 107 from leading to metal lead wire 110
Fracture.
As shown in Figure 1, metal lead wire 110 further includes the first bevel edge 113 and the second bevel edge 114 of flat shape；First tiltedly
Side 113, the second bevel edge 114 connect the first bottom edge 111 and the second bottom edge 112；First bottom edge 111, the second bottom edge 112, first are tiltedly
Side 113, the second bevel edge 114 constitute trapezium structure；First bottom edge 111 and the first bevel edge 113 constitute the first angle 115, the first bottom
Side 111 and the second bevel edge 113 constitute the second angle 116；First angle 115, the second angle 116 are 20 degree to 80 degree.
Buffer layer 120 to the size of the total buffer power 109 of metal lead wire 110 can with trapezium structure the first angle 115,
The change of second angle 116 and adjust.When display panel 100 is towards when bending positive 101 sides bending, metal lead wire 110 is produced
Green material stress 107 acts on itself, and material stress 107 is directed toward substrate 10.Meanwhile the organic material 121 of buffer layer 120 is two
Side generates the first cushion effect, the second cushion effect acts on the first bevel edge 113, the second bevel edge 114, the first cushion effect and the second buffering
The total buffer power 109 of power synthesis is directed toward bending front 101.Wherein, total buffer power 109 and the first angle 115, the second angle 116
It is related.The angle of first angle 115, the angle of the second angle 116 determine the size of total buffer power 109.If the first angle 115
Angle, the angle of the second angle 116 it is appropriate, then total buffer power 109 it is approximate with material stress 107 offset.This just alleviates curved
Sell off the material stress 107 that the metal lead wire 110 of shape is subject to.
As shown in Figure 1, the length of the first bevel edge 113 of metal lead wire 110 is approximately equal to the length of the second bevel edge 114；Gold
The first angle 115 for belonging to lead 110 is approximately equal to the second angle 116.First bottom edge 411, the second bottom edge 112, the first bevel edge
113, the second bevel edge 114 constitutes isosceles trapezoidal structure, wherein the first bottom edge 111, the second bottom edge 112 constitute isosceles trapezoidal structure
Two bottoms, the first bevel edge 113, the second bevel edge 114 constitute isosceles trapezoidal structure two waists.The length of first bevel edge 113
It spends, the length of the second bevel edge 114 refers to that the first bevel edge 113, the second bevel edge 114 extend in the cross section of metal lead wire 110
Size.
Isosceles trapezoidal structure can make buffer layer 120 to metal lead wire 110 the first bevel edge 113, the second bevel edge 114 first
Cushion effect, the second cushion effect near symmetrical, this, which can be helped, keeps 110 stress balance of metal lead wire.When display panel 100 is towards curved
When rolling over positive 101 sides bending, metal lead wire 110 generates material stress 107 and acts on itself, and material stress 107 is directed toward substrate
10.Meanwhile the organic material 121 of buffer layer 120 acts on the first bevel edge in the first cushion effect of two sides generation, the second cushion effect
113, the second bevel edge 114, the total buffer power 109 that the first cushion effect is synthesized with the second cushion effect are directed toward bending front 101.Wherein,
First cushion effect, the second cushion effect, total buffer power 109 and the first bevel edge 113, the second bevel edge 114, the first angle 115, second folder
Angle 116 is related.It is total that the first bevel edge 113 and the second bevel edge 114 of equal length cause the first cushion effect, the second cushion effect to synthesize
Cushion effect 109, which is directed toward, bends front 101 and the approximate counteracting on the direction perpendicular to bending front 101.If the first angle
115 angle, the angle of the second angle 116 are appropriate, offset then total buffer power 109 is approximate with material stress 107.This just alleviates
The material stress 107 that the metal lead wire 110 of bending deformation is subject to.
Fig. 5 is a kind of cross-sectional view of the display panel 500 of another embodiment of the present invention in its bent area.Display panel
500 include metal lead wire 510.Metal lead wire 510 includes the first bevel edge 513, the second bevel edge 514, the first angle 515, second folder
Angle 516.Length of the length of first bevel edge 513 less than the second bevel edge 514；First angle 515 to the second angle 516 big 10 degree extremely
60 degree.Metal lead wire 510 in display panel 500 further includes the first bottom edge 511 and the second bottom edge 512.First bottom edge 511,
Two bottom edges 512, the first bevel edge 513, the second bevel edge 514 constitute non-isosceles trapezoidal structure, wherein the first bottom edge 511, the second bottom edge
512 constitute two bottoms of non-isosceles trapezoidal structure, and the first bevel edge 513, the second bevel edge 514 constitute the two of non-isosceles trapezoidal structure
A waist.First bottom edge 511 and the first bevel edge 513 constitute the first angle 515, the first bottom edge 511 and the second bevel edge 514 composition the
Two angles 516, the first angle 515 are all acute angles from the second angle 516 and have different angles.The angle of first angle 515
Degree, the second angle 516 angle can be 20 degree to 80 degree, the angle of the first angle 515 can be than the angle of the second angle 516
It is 10 degree to 60 degree big.Second bottom edge 512 and the first bevel edge 513 constitute third angle 517, the second bottom edge 512 and the second bevel edge 514
The 4th angle 518 is constituted, third angle 517 is all obtuse angle from the 4th angle 518 and has different angles.First bevel edge
513, the second bevel edge 514 is in close contact organic material 521.The non-isosceles trapezoidal structure of metal lead wire 510 can alleviate bending and become
The material stress that the metal lead wire 510 of shape is subject to.The length of first bevel edge 513, the length of the second bevel edge 514 refer to the first bevel edge
513, the size that the second bevel edge 514 extends in the cross section of metal lead wire 510.
When display panel 500 is towards when bending positive 501 sides bending, metal lead wire 510 generates material stress 507 and acts on
In itself, material stress 507 can be directed toward substrate 50 or be parallel to substrate 50.Meanwhile organic material 521 generates the first buffering
Power, the second cushion effect act on the first bevel edge 513, the second bevel edge 514, and the first cushion effect synthesizes total buffer power with the second cushion effect
509.Total buffer power 509 can be directed toward bending front 501 or be parallel to bending front 501.Wherein, the first cushion effect, second
Cushion effect, total buffer power 509 are related to the first bevel edge 513, the second bevel edge 514, the first angle 515, the second angle 516.If
First bevel edge 513, the second bevel edge 514, the first angle 515, the second angle 516 are appropriate, then total buffer power 509 is approximate to offset material
Expect stress 507.The material stress 507 that this metal lead wire 510 for just alleviating bending deformation is subject to.
Fig. 6 is a kind of cross-sectional view of the display panel 600 of another embodiment of the present invention in its bent area.Display panel
600 include metal lead wire 610.Metal lead wire 610 includes the first bevel edge 613 and the second bevel edge 614 of circular shape；First bevel edge
613, the approximate radian having the same of the second bevel edge 614 and radius of curvature；First bevel edge 613, the second bevel edge 614 connection metal draw
The first bottom edge 611 and the second bottom edge 612 of line 610；First bottom edge 611, the second bottom edge 612, the first bevel edge 613, the second bevel edge
614 constitute quadrilateral structure.Wherein, the first bottom edge 611, the second bottom edge 612 constitute quadrilateral structure two bottoms, first tiltedly
Side 613, the second bevel edge 614 constitute two sides of quadrilateral structure.First bottom edge 611 and the first bevel edge 613 constitute the first folder
Angle 615, the first bottom edge 611 and the second bevel edge 614 constitute the second angle 616, and the first angle 615 and the second angle 616 are all sharp
Angle and angle having the same.The angle of first angle 615, the angle of the second angle 616 can be 20 degree to 80 degree.Second
Bottom edge 612 and the first bevel edge 613 constitute third angle 617, and the second bottom edge 612 and the second bevel edge 614 constitute the 4th angle 618,
Third angle 617 and the 4th angle 618 are all obtuse angle and angle having the same.First bevel edge 613, the second bevel edge 614 are tight
Contiguity touching organic material 621.What the metal lead wire 610 that the quadrilateral structure of metal lead wire 610 can alleviate bending deformation was subject to
Material stress.
The direction of the arc-shaped edges stress of first bevel edge 613, the second bevel edge 614 disperses, the first bevel edge 613, the second bevel edge 614
First cushion effect, second cushion effect at place act on multiple directions, this can promote the effect for alleviating material stress 607.Work as display
Panel 600 is towards when bending positive 601 sides bending, and metal lead wire 610 generates material stress 607 and acts on itself, and material is answered
Power 607 is directed toward substrate 60.Meanwhile organic material 621 generates the first cushion effect, the second cushion effect and acts on the first bevel edge 613, the
Two bevel edges 614, the total buffer power 609 that the first cushion effect is synthesized with the second cushion effect are directed toward bending front 601.Wherein, first is slow
Impulse force, the second cushion effect, total buffer power 609 and the first bevel edge 613, the second bevel edge 614, the first angle 615, the second angle 616
It is related.If the first bevel edge 613, the second bevel edge 614, the first angle 615, the second angle 616 are appropriate, total buffer power 609
It is approximate with material stress 607 to offset.The material stress 607 that this metal lead wire 610 for just alleviating bending deformation is subject to.Wherein,
The direction of the arc-shaped edges stress of one bevel edge 613, the second bevel edge 614 disperses, and the first cushion effect, the second cushion effect act on multiple sides
To this keeps the effect for alleviating material stress 607 more preferable.
Fig. 7 is a kind of cross-sectional view of the display panel 700 of another embodiment of the present invention in its bent area.Display panel
700 include metal lead wire 710.Metal lead wire 710 includes the first bottom edge 711, the second bottom edge 712, the first bevel edge of flat shape
713, the second bevel edge 714, third bevel edge 715, the 4th bevel edge 716；First bottom edge 711 is parallel to the second bottom edge 712, the first bevel edge
713 are parallel to third bevel edge 715, and the second bevel edge 714 is parallel to the 4th bevel edge 716；First bevel edge 713 connects the 4th bevel edge 716,
Second bevel edge 714 connects third bevel edge 715, and the first bevel edge 713, the second bevel edge 714 all connect the first bottom edge 711, third bevel edge
715, the 4th bevel edge 716 all connects the second bottom edge 712；First bottom edge 711, the second bottom edge 712, the first bevel edge 713, the second bevel edge
714, third bevel edge 715, the 4th bevel edge 716 constitute hexagonal structure；The angle of first bottom edge 711 and the first bevel edge 713, first
The angle of bottom edge 711 and the second bevel edge 714, the second bottom edge 712 and the angle of third bevel edge 715, the second bottom edge 712 and the 4th are oblique
The angle on side 716 is all obtuse angle.Display panel 700 can be bent towards positive 701 sides are bent, can also be towards substrate 70 1
Lateral bending folding.The hexagonal structure of metal lead wire 710 can alleviate the material stress that the metal lead wire 710 of bending deformation is subject to.
When display panel 700 is towards when bending positive 701 sides bending, metal lead wire 710 generates material stress 707 and acts on
In itself, material stress 707 is directed toward substrate 70.Meanwhile organic material 721 generates the first cushion effect, the second cushion effect acts on
First bevel edge 713, the second bevel edge 714, the total buffer power 709 that the first cushion effect is synthesized with the second cushion effect are directed toward bending front
701.If the interior angle setting of hexagonal structure is appropriate, total buffer power 709 is approximate with material stress 707 to be offset.Work as display
When panel 700 is bent towards 70 side of substrate, metal lead wire 710 generates material stress 707 and acts on itself, material stress 707
It is directed toward bending front 701.Meanwhile organic material 721 generates the first cushion effect, the second cushion effect and acts on third bevel edge 715, the
Four bevel edges 716, the total buffer power 709 that the first cushion effect is synthesized with the second cushion effect are directed toward substrate 70.If hexagonal structure
Interior angle setting is appropriate, offsets then total buffer power 709 is approximate with material stress 707.This just alleviates the metal lead wire of bending deformation
710 material stresses 707 being subject to.
Fig. 8 is a kind of cross-sectional view of the display panel 800 of another embodiment of the present invention in its bent area.Display panel
800 include bent area 807.Bent area 807 includes the first bent area 808 and the second bent area 809, and the first bent area 808 is most
Big bending curvature is greater than the maximum bending curvature of the second bent area 808.Bent area 807 further includes multiple metal lead wires 810: being located at
First metal lead wire 830 of the first bent area 808 and the second metal lead wire 840 positioned at the second bent area 809.Multiple metals draw
Line 810 is set in buffer layer 820.First metal lead wire 830 has the first angle 831 or the second angle 832 of first angle,
Second metal lead wire 840 has the first angle 841 or the second angle 842 of second angle, and first angle therein is less than second
Angle.When display panel 800 is bent, the first metal lead wire 830 generates the first material stress and acts on itself, and the second metal draws
Line 840 generates the second material stress and acts on itself, and the first material stress is different from the second material stress.Meanwhile buffer layer 820
It generates the first total buffer power and acts on the first metal lead wire 830, and generate the second total buffer power and act on the second metal lead wire
840, the first total buffer power and the second total buffer power are also different.Different the first total buffer power, the second total buffer power can be distinguished
Offset the first different material stresses, the second material stress.
Fig. 9 is a kind of cross-sectional view of the display panel 900 of another embodiment of the present invention in its bent area.Display panel
900 include bent area 907.Bent area 907 includes the first film layer 908 and the second film layer 909, and the first film layer 908 and bending are positive
901 spacing is greater than the spacing of the second film layer 909 with bending front 901.Bent area 907 further includes multiple metal lead wires 910: position
Third metal lead wire 930 in the first film layer 908 and the 4th metal lead wire 940 positioned at the second film layer 909.Multiple metal lead wires
910 are set in buffer layer 920.Third metal lead wire 930 has the first angle 931 or the second angle 932 of third angle, the
Four metal lead wires 940 have the first angle 941 or the second angle 942 of fourth angle, and third angle therein is less than fourth angle
Degree.When display panel 900 is bent, third metal lead wire 930 generates third material stress and acts on itself, the 4th metal lead wire
940 the 4th material stresses of generation act on itself, and third material stress is different from the 4th material stress.Meanwhile buffer layer 920 produces
Raw third total buffer power acts on third metal lead wire 930, and generates the 4th total buffer power and act on the 4th metal lead wire
940, third total buffer power and the 4th total buffer power are also different.Different third total buffer power, the 4th total buffer power can be distinguished
Offset different third material stresses, the 4th material stress.
Figure 10 is a kind of cross-sectional view of the display panel 1000 of another embodiment of the present invention in its bent area.Bent area
1007 include multiple metal lead wires 1010: fifth metal lead 1030 and the 6th metal lead wire 1040, fifth metal lead 1030
Cross-sectional area be greater than the 6th metal lead wire 1040 cross-sectional area.Multiple metal lead wires 1010 are set to buffer layer 1020
In.Fifth metal lead 1030 has the first angle 1031 or the second angle 1032 of the 5th angle, the 6th metal lead wire 1040
The first angle 1041 or the second angle 1042 with hexagonal degree, the 5th angle therein is less than hexagonal degree.Work as display surface
When plate 1000 is bent, fifth metal lead 1030 generates the 5th material stress and acts on itself, and the 6th metal lead wire 1040 generates
6th material stress acts on itself, and the 5th material stress is different from the 6th material stress.Meanwhile buffer layer 1020 generates the 5th
Total buffer power acts on fifth metal lead 1030, and generates the 6th total buffer power and act on the 6th metal lead wire 1040, the
Five total buffer power and the 6th total buffer power are also different.Different the 5th total buffer power, the 6th total buffer power can be offset respectively not
The 5th material stress together, the 6th material stress.
Figure 11 is a kind of schematic diagram of display device 1150 of another embodiment of the present invention.Display device 1150 includes display surface
Plate 1100.The specific structure of display panel 1100 is described in detail in the above-described embodiments, and details are not described herein again.
Figure 12 A and Figure 12 B are a kind of schematic diagrames of display panel preparation method of another embodiment of the present invention.Display panel
Preparation method includes: that (1) forms organic material buffer layer in the bent area of display panel；(2) pass through the patterning of buffer layer, shape
At groove in buffer layer；(3) metal lead wire is formed in groove.Wherein, as illustrated in fig. 12, the step of forming symmetrical grooves
It specifically includes: (1) forming buffer layer 1201 on substrate；(2) side on buffer layer 1201 far from substrate forms photoresist
Layer 1202；(3) photoresist layer 1202 is exposed using mask plate, developed, forming tool, there are two the openings of symmetrical bevel edge
1203, the light collimation of the time, exposure that adjust exposure can form straight bevel edge, the bevel edge of arc or various inclination angles
Bevel edge；(4) it etches buffer layer 1201 and removes remaining photoresist, forming tool, there are two the grooves 1204 of symmetrical bevel edge.
As shown in Figure 12 B, the step of forming asymmetric groove specifically includes: (1) buffer layer 1201 is formed on substrate；(2) it is buffering
Side on layer 1201 far from substrate forms the first photoresist layer 1202；(3) using mask plate to the first photoresist layer 1202 into
Row exposure, development, form the opening 1203 with the first bevel edge, the light collimation of the time, exposure that adjust exposure can be with shapes
The bevel edge of the bevel edge of straighe, the bevel edge of arc or various inclination angles；(4) it etches buffer layer 1201 and removes remaining photoetching
Glue forms the groove 1204 with the second bevel edge；(5) the second photoresist layer is formed on buffer layer 1201 and groove 1204
1205；(6) the second photoresist layer 1205 is exposed using mask plate, developed, form the opening 1206 with third bevel edge,
The light collimation of the time, exposure that adjust exposure can form the oblique of straight bevel edge, the bevel edge of arc or various inclination angles
Side；(7) it etches buffer layer 1201 and removes remaining photoresist, form the groove with the second bevel edge and the 4th bevel edge
1207, the second bevel edge and the 4th bevel edge are asymmetric.
Above-mentioned technical proposal has the following beneficial effects: that metal draws when display panel is towards when bending positive side bending
Line generates material stress and acts on itself, and material stress is directed toward the bending back side.Meanwhile buffer structure organic material generates first and delays
Impulse force, the second cushion effect act on the first bevel edge, the second bevel edge, and the first cushion effect synthesizes total buffer power with the second cushion effect.Its
In, the first cushion effect, the second cushion effect, total buffer power are related to the first bevel edge, the second bevel edge, the first angle, the second angle.Such as
The first bevel edge of fruit, the second bevel edge, the first angle, the second angle are appropriate, offset then total buffer power is approximate with material stress.This is just
Alleviate the material stress that the metal lead wire of bending deformation is subject to.When display panel bending, the organic material of buffer layer generates total
Cushion effect acts on metal lead wire.If groove setting suitably causes total buffer power approximately equal with the size of material stress, square
To approximately opposed, then total buffer power can offset material stress.The material that this metal lead wire for just alleviating bending deformation is subject to
Stress avoids material stress that metal lead wire is caused to be broken.The foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within the scope of protection of the invention.
Claims (12)
1. a kind of display panel, including substrate, which is characterized in that the display panel further include:
The buffer layer being set on the substrate, the buffer layer include organic material；
It is set to metal layer of the buffer layer far from the substrate side, the metal layer includes a plurality of metal lead wire；
The display panel includes bent area, and in the bent area, the buffer layer includes multiple grooves, and the metal lead wire
It is set in the groove.
2. display panel according to claim 1, which is characterized in that the display panel further includes bending front；
The metal lead wire includes the first bottom edge of flat shape, the second bottom edge；
The length on first bottom edge is greater than the length on second bottom edge；
First bottom edge is approximately parallel to second bottom edge；
First bottom edge and the positive spacing of bending are less than second bottom edge and the positive spacing of bending.
3. display panel according to claim 2, which is characterized in that the metal lead wire further includes the first of flat shape
Bevel edge and the second bevel edge；
First bevel edge, second bevel edge connect first bottom edge and second bottom edge；
First bottom edge, second bottom edge, first bevel edge, second bevel edge constitute trapezium structure；
First bottom edge and first bevel edge constitute the first angle, and first bottom edge and second bevel edge constitute second
Angle；
First angle, second angle are 20 degree to 80 degree.
4. display panel according to claim 3, which is characterized in that the length of first bevel edge is approximately equal to described
The length of two bevel edges；
First angle is approximately equal to second angle.
5. display panel according to claim 3, which is characterized in that the length of first bevel edge is less than described second tiltedly
The length on side；
First angle is 10 degree to 60 degree bigger than second angle.
6. display panel according to claim 2, which is characterized in that the metal lead wire further includes the first of circular shape
Bevel edge and the second bevel edge；
The approximate radian having the same of first bevel edge, second bevel edge and radius of curvature；
First bevel edge, second bevel edge connect first bottom edge and second bottom edge；
First bottom edge, second bottom edge, first bevel edge, second bevel edge constitute quadrilateral structure.
7. display panel according to claim 1, which is characterized in that the metal lead wire includes the first bottom of flat shape
Side, the second bottom edge, the first bevel edge, the second bevel edge, third bevel edge, the 4th bevel edge；
First bottom edge is parallel to second bottom edge, and first bevel edge is parallel to the third bevel edge, and described second tiltedly
While being parallel to the 4th bevel edge；
First bevel edge connects the 4th bevel edge, and second bevel edge connects the third bevel edge, first bevel edge, institute
It states the second bevel edge and all connects first bottom edge, the third bevel edge, the 4th bevel edge all connect second bottom edge；
First bottom edge, second bottom edge, first bevel edge, second bevel edge, the third bevel edge, the described 4th
Bevel edge constitutes hexagonal structure；
The angle of first bottom edge and first bevel edge, the angle on first bottom edge and second bevel edge, described the
The angle of the angle of two bottom edges and the third bevel edge, second bottom edge and the 4th bevel edge is all obtuse angle.
8. display panel according to claim 4, which is characterized in that the bent area includes that the first bent area and second are curved
The maximum bending curvature of folding area, first bent area is greater than the maximum bending curvature of second bent area；
The metal lead wire includes the first metal lead wire positioned at first bent area and the positioned at second bent area
Two metal lead wires；
First angle or second angle of first metal lead wire are first angle；
First angle or second angle of second metal lead wire are second angle；
The first angle is less than the second angle.
9. display panel according to claim 4, which is characterized in that the bent area includes that the first conductive layer and second is led
Electric layer, first conductive layer and the positive spacing of the bending be greater than second conductive layer and the bending it is positive between
Away from；
The metal lead wire includes the third metal lead wire positioned at first conductive layer and the positioned at second conductive layer
Four metal lead wires；
First angle or second angle of the third metal lead wire are third angle；
First angle or second angle of 4th metal lead wire are fourth angle；
The third angle is less than the fourth angle.
10. display panel according to claim 4, which is characterized in that the metal lead wire include fifth metal lead and
6th metal lead wire, the cross-sectional area of the fifth metal lead are greater than the cross-sectional area of the 6th metal lead wire；
First angle or second angle of the fifth metal lead are the 5th angle；
First angle or second angle of 6th metal lead wire are hexagonal degree；
5th angle is less than the hexagonal degree.
11. display panel according to claim 1, which is characterized in that the substrate uses polyimide material.
12. a kind of display device, which is characterized in that the display device includes described in any one in claim 1 to 11
Display panel.
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| CN201810938826.0A CN109103345B (en) | 2018-08-17 | 2018-08-17 | Display panel and display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020177517A1 (en) * | 2019-03-07 | 2020-09-10 | 京东方科技集团股份有限公司 | Supporting structure and preparation method therefor, and display device |
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| CN109103345B (en) | 2021-03-05 |
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