CN108877515A - A kind of display panel, display module and electronic device - Google Patents
A kind of display panel, display module and electronic device Download PDFInfo
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- CN108877515A CN108877515A CN201810583018.7A CN201810583018A CN108877515A CN 108877515 A CN108877515 A CN 108877515A CN 201810583018 A CN201810583018 A CN 201810583018A CN 108877515 A CN108877515 A CN 108877515A
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- display panel
- recess portion
- bending part
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- flexible substrate
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The present invention provides a kind of display panel, display module and electronic device, the display panel：Flexible substrate, the flexible substrate include for the first part of pixel array, second part and the bending part between the first part and the second part to be arranged；Metal layer, including conducting wire, the conducting wire are located in the flexible substrate, and the conducting wire includes the part corresponding to the bending part；Wherein the bending part is provided with recess portion far from the side of the metal layer.Display panel, display module and electronic device of the invention can reduce the tensile stress of conducting wire receiving, it is prevented to be broken.
Description
【Technical field】
The present invention relates to field of display technology, more particularly to a kind of display panel, display module and electronic device.
【Background technique】
As shown in Figure 1, display panel generally includes display area and bending region 101 (pad bending), Flexible Displays
Mould group includes flexible substrate 11, interlayer insulating film 12, is provided with via hole on interlayer insulating film 12, and the via hole is filled with organic material
Expect 13, the metal layer 14 with a plurality of conducting wire, combination layer 15, combination layer 15 includes flatness layer, pixel defining layer and spacer.
But as shown in Fig. 2, providing the percentage of the stretch-proof stress of each layer of display panel, abscissa indicates stretch-proof
The percentage of stress, ordinate indicate each layer of display panel, flexible substrate, horizontal line 16-17 table are wherein indicated below horizontal line 16
Show organic layer, horizontal line 17-18 indicates metal layer, and horizontal line 18-19 indicates combination layer, and 102,103 respectively indicate not plus UV glue and add
There is the percentage of the tension stress of UV glue, it is seen that position neutral axis (in Fig. 1 shown in horizontal and vertical dotted line) of existing display panel
In in flexible substrate, causing to make during bending plain conductor to bear biggish tensile stress, it is made to be easy to happen fracture.
Therefore, it is necessary to a kind of display panel, display module and electronic device be provided, to solve present in the prior art
The problem of.
【Summary of the invention】
The purpose of the present invention is to provide a kind of display panel, display module and electronic devices, can reduce metal and lead
The tensile stress that line is born, prevents it to be broken.
In order to solve the above technical problems, the present invention provides a kind of display panel comprising：
Flexible substrate, the flexible substrate include for the first part of pixel array, second part to be arranged and is located at
Bending part between the first part and the second part；
Metal layer, including conducting wire, the conducting wire are located in the flexible substrate, and the conducting wire includes corresponding to the bending
Partial part；
Wherein the bending part is provided with recess portion far from the side of the metal layer.
In display panel of the invention, the thickness of the bending part is less than the first part or the second part
Thickness.
In display panel of the invention, the display panel further includes the flatness layer being located on the metal layer, pixel
At least one of definition layer and spacer；
The thickness of the bending part is less than or equal at least one in the flatness layer, pixel defining layer and spacer
The sum of a thickness.
In display panel of the invention, the depth of the recess portion meets following formula：
t≤1/3T；
Wherein t is the depth of the recess portion, and T is the thickness of the first part.
In display panel of the invention, the display panel further includes the interlayer insulating film on the metal layer,
It is provided with via hole on the interlayer insulating film, in the case where overlooking visual angle, the boundary of the via hole is located at the bending part and is equipped with
The overlapping margins in the region of the recess portion are equipped in the boundary in the region of the recess portion or with the bending part.
In display panel of the invention, the recess portion has multiple.
In display panel of the invention, setting is spaced between the recess portion, the spacing between the recess portion is equal, each
The opening in the section of the recess portion it is of same size.
In display panel of the invention, the densely distributed degree positioned at the recess portion at the edge of the bending part is less than position
In the densely distributed degree of the recess portion at the middle part of the bending part.
In display panel of the invention, the spacing between the recess portion at the edge of the bending part, which is greater than, is located at institute
State the spacing between the recess portion at the middle part of bending part.
In display panel of the invention, the width positioned at the opening in the section of the recess portion at the edge of the bending part is big
In the width of the opening in the section of the recess portion at the middle part for being located at the bending part.
In display panel of the invention, the cross sectional shape of the recess portion include triangle, trapezoidal, rectangle, it is semicircle with
And at least one of half elliptic.
In display panel of the invention, packing material, the Young's modulus of the packing material are filled in the recess portion
Less than the Young's modulus of the flexible substrate.
The present invention provides a kind of display module, including any one of the above display panel.
The present invention provides a kind of electronic device, including above-mentioned display module.
Display panel, display module and electronic device of the invention makes since multiple recess portions being arranged on flexible substrates
Neutral axis is obtained close to metal layer, to reduce the tensile stress of conducting wire receiving, it is prevented to be broken.
【Detailed description of the invention】
Fig. 1 is the structural schematic diagram of existing display panel；
Fig. 2 is the percentage schematic diagram of the stretch-proof stress of each layer in existing display panel；
Fig. 3 is the first structural schematic diagram of the display panel of the embodiment of the present invention one；
Fig. 4 is that the invention shows the percentage schematic diagrames of the stretch-proof stress of layer each in panel；
Fig. 5 is second of structural schematic diagram of the display panel of the embodiment of the present invention one；
Fig. 6 is the structural schematic diagram of the display panel of the embodiment of the present invention two；
Fig. 7 is the first structural schematic diagram of the flexible substrate of the embodiment of the present invention two；
Fig. 8 is second of structural schematic diagram of the flexible substrate of the embodiment of the present invention two；
Fig. 9 is the third structural schematic diagram of the flexible substrate of the embodiment of the present invention two；
Figure 10 is the 4th kind of structural schematic diagram of the flexible substrate of the embodiment of the present invention two；
Figure 11 is the 5th kind of structural schematic diagram of the flexible substrate of the embodiment of the present invention two；
Figure 12 is the 6th kind of structural schematic diagram of the flexible substrate of the embodiment of the present invention two；
Figure 13 is the structural schematic diagram of the corresponding display module of display panel after bending of the embodiment of the present invention two.
【Specific embodiment】
The explanation of following embodiment is to can be used to the particular implementation of implementation to illustrate the present invention with reference to additional schema
Example.The direction term that the present invention is previously mentioned, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outside", " side "
Deng being only the direction with reference to annexed drawings.Therefore, the direction term used be to illustrate and understand the present invention, rather than to
The limitation present invention.The similar unit of structure is to be given the same reference numerals in the figure.
Referring to figure 3. to the structural schematic diagram for the display panel that 5, Fig. 3 is the embodiment of the present invention one.
As shown in figure 3, the display panel of the present embodiment includes flexible substrate 21, interlayer insulating film 12, metal layer 14, combination
Layer 15, wherein interlayer insulating film 12, metal layer 14, combination layer 15 are sequentially located in flexible substrate 21, and combination layer 15 includes flat
At least one of layer, pixel defining layer and spacer.
Via hole 121 is provided on the interlayer insulating film 12, the via hole 121 is filled with organic material 13.
Metal layer 14 includes a plurality of conducting wire, and the conducting wire includes data line, scan line etc..The conducting wire is located at the flexibility
On substrate, the conducting wire includes the part corresponding to the bending part.
Structure after the display panel bending of the present embodiment is similar to Figure 13, in conjunction with Figure 13, wherein the display panel packet
Include bending region 101 and display area 102 (such as region on the left of bending region) and (such as the buckled zone of welding region 103
Region on the right side of domain), bending region 101 refers to and can may be at flat state or bending state with curved region.It is described soft
Property substrate 21 include first part 211, second part 212 and bending part 213, the first part 211 and the display
The position in region 102 is corresponding, and pixel array is arranged thereon.Second part 212 is corresponding with the position of the welding region 103.
For connecting flexible circuit board.The bending part 213 between the first part 211 and the second part 212,
During specific processing procedure, the bending part 213 of display panel is bent, by welding region 103 and the display panel back side
Driving chip connection.
The recess portion 201 namely the bending part that the bending part 213 is provided with far from the side of the metal layer 14
213 sides far from the interlayer insulating film 12 are provided with downward recess portion 201, are adjusted with the neutral axis to display panel
It is whole, so that the close metal layer of neutral axis (place that the percentage of stretch-proof stress is 0 is the position where neutral axis), to subtract
The tensile stress that small conducting wire is born, prevents it to be broken.
The cross sectional shape of the recess portion 201 include in triangle, trapezoidal, rectangle, semicircle and half elliptic at least
It is a kind of.
Since bending part 213 is provided with recess portion 201, so that the thickness of the bending part 213 is respectively smaller than first
Divide the thickness of 211 and the second part 212, wherein the thickness of the thickness and second part 212 of first part 211 is equal.?
That is, the bending corresponding flexible substrate 21 in region 101 is thinning, to be bent part 213.
In one embodiment, in the case where overlooking visual angle, the boundary m1 of the via hole 121 is located on the bending part 213
The side in the region of the recess portion 201 is equipped in the boundary m2 in the region equipped with the recess portion 201 or with the bending part 213
Boundary m2 is overlapped.The boundary m2 of the recess portion 201 is greater than or equal to the boundary m1 of the via hole 121.The position of the via hole 121 with
The position of welding region is corresponding, so that the range in bending region 101 is greater than the range of welding region, and then preferably
The plain conductor of welding region is prevented to be broken.When recess portion is one entire, the bending part 213 is equipped with the recess portion
201 region is the region where recess portion 201, and the boundary in the region is the boundary of recess portion 201.
In one embodiment, the depth of the recess portion 201 is specially：
t≤1/3T；
Wherein t is the depth of the recess portion 201, and T is the thickness of the second part 212 or the first part 211.
When the thinning thickness of flexible substrate is located at the range, enable to neutral axis closer to metal layer 14.
In one embodiment, the thickness of the bending part 213 be less than or equal to the flatness layer, pixel defining layer with
And the sum of thickness of at least one of spacer.For example, when the display panel metal layer 14 on be provided with flatness layer, as
When plain definition layer and spacer, it is fixed that the thickness of the bending part 213 is less than or equal to the thickness of the flatness layer, the pixel
The height summation of the thickness of adopted layer and the spacer.Namely the thickness of the flexible substrate 21 of thinned section is less than or equal to combination
The thickness of layer 15.
In one embodiment, during processing procedure, display panel is usually made on the glass substrate, is terminated in processing procedure
When, it is irradiated by default laser, to remove flexible substrate 21 and glass substrate；The recess portion 201 is by first
Laser pair flexible substrate 21 corresponding with the bending position in region 101 carries out radium-shine formation, the energy of the first laser
Amount is greater than the energy of default laser or the irradiation duration of the first laser is greater than the irradiation duration of the default laser.?
It increases the even laser energy of radium-shine equipment corresponding with bending region 101 or extends radium-shine action time, region will be bent
101 flexible substrate 21 is thinned, to form recess portion 201.It will of course be understood that, the generation type of the recess portion of this implementation is not
It is limited to the above method, can also be by etching mode, either setting is raised or using the side such as mechanically cutting on the glass substrate
Formula forms recess portion.
But arrow direction indicates the bending direction of display panel in Fig. 3, the bending radius of display panel is 0.5 millimeter,
As shown in figure 4, providing the percentage of the tension stress of each layer in display panel, abscissa indicates the percentage of stretch-proof stress,
Ordinate indicates each layer of display panel, and flexible substrate is wherein indicated below horizontal line 32, and horizontal line 32-33 indicates organic layer, horizontal line
33-34 indicates that metal layer, horizontal line 34-35 indicate combination layer, and 301,302 do not respectively indicate not plus UV glue and the stretch-proof added with UV glue
The percentage of stress, the place that the percentage of stretch-proof stress is 0 are the position where neutral axis, it is seen that display surface of the invention
The neutral axis (in Fig. 3 shown in horizontal and vertical dotted line) of plate is located in metal layer, so that plain conductor is born during bending
More lesser tensile stress, thus be less likely to occur to be broken.
In conjunction with Fig. 3, as shown in figure 5, being filled with packing material 31, the Young of the packing material 31 in the recess portion 201
Modulus is less than the Young's modulus of flexible substrate 21.The packing material 31 can be organic material, high molecular material etc.；Filling
Material 31 can be preferably be bonded with flexible substrate 21, has certain high viscous force；The packing material 31 not only keeps flexible substrate
21 planarization；The film layer or device of 21 top of flexible substrate 21 and flexible substrate can also be protected.Due to using low modulus
Material, be bent region 101 be bent when, moreover it is possible to play the role of adjust neutral axis, make it closer to metal layer.
Please refer to the structural schematic diagram for the display panel that Fig. 6 to 13, Fig. 6 is the embodiment of the present invention two.
The present embodiment and the difference of a upper embodiment are：Bending part 213 is arranged far from the side of the metal layer 14
There are at least two recess portions 202, so that the shape on surface of the bending part 213 far from the metal layer 14 is concavo-convex.
In order to simplify making technology, production cost, in one embodiment, uniform intervals between the recess portion 202 are reduced
It is arranged, the interval S 2 between the recess portion 202 is equal.The width S 1 of the opening in the section of each recess portion 202 is identical.One
S1 is equal to S2 in embodiment.
In one embodiment, the densely distributed degree positioned at the recess portion 202 at the edge of the bending part 213 is less than position
In the densely distributed degree of the recess portion 202 at the middle part of the bending part 213.In conjunction with Figure 13, due to the middle part of bending part 213
Recess portion 202 density it is higher, to not only act as supporting role, can also preferably release in the display panel bending process
Tensile stress is put, to preferably protect plain conductor.
As shown in fig. 7, the width S 1 of the opening in the section of each recess portion 202 is identical；Between between the recess portion 202
Away from differing, the spacing between the recess portion at the edge of the bending part 213, which is greater than, to be located in the bending part 213
Spacing between the recess portion in portion.For example the spacing from the centre of flexible substrate 21 to two sides is gradually increased.In another embodiment
In, as shown in figure 8, the width of the opening in the section of each recess portion 202 is unequal；Spacing between the recess portion 202
S2 is equal, is greater than positioned at the width of the opening in the section of the recess portion 202 at the edge of the bending part 213 and is located at the bending section
Divide the width of the opening in the section of the recess portion 202 at 213 middle part.For example the width among flexible substrate 21 to two sides gradually increases
Greatly.It should be understood that the set-up mode of the recess portion is not limited to above several, there can also be other deformations.
In the case where overlooking visual angle, the boundary of the via hole 121 is located at the bending part 213 equipped with the recess portion 202
The overlapping margins in the region of the recess portion 202 are equipped in the boundary in region or with the bending part 213.
It should be understood that the region that the bending part 213 is equipped with the recess portion 202 refers to when recess portion is multiple
Region equipped with multiple recess portions 202, what the boundary in the region can be collectively formed by the boundary in outermost recess portion.It is described
The boundary in region of the bending part 213 equipped with the recess portion 202 is such as that the boundary of first and the 6th recess portion in Fig. 6 is total
With formation.
As shown in Fig. 6 to 12, the cross sectional shape of the recess portion 202 includes triangle, trapezoidal, rectangle, semicircle and half
At least one of ellipse.
Also it can be filled with packing material in the recess portion 202 of the present embodiment, the Young's modulus of the packing material is less than described
The Young's modulus of flexible substrate 21.
As shown in figure 13, display panel has bending region 101, display area 102 and welding region 103, the display
The corresponding display module of panel further includes backboard 40, and the inside up and down of curved display panel is arranged in the backboard 40, described
One end of backboard 40 is flushed with the end of display area 102, welding region 103 respectively, and the other end of backboard 40 is beyond default
The length for being bent region is L, and the range of L is 0.05mm~0.5mm, and during actual flexion, actual flexion region 101 is less than
Default bending region, therefore backboard 40 can preferably support display panel beyond default bending region above range.Upper and lower sides
Backboard 40 between be additionally provided with supporting element 41.
Since multiple recess portions are arranged in bending part, the neutral axis of display panel can be adjusted, so that neutral axis leans on
Nearly metal layer prevents it to be broken to reduce the tensile stress of conducting wire receiving.
The present invention also provides a kind of display modules comprising any one of the above display panel.
The present invention also provides a kind of electronic devices comprising above-mentioned display module.
Display panel, display module and electronic device of the invention, since multiple recess portions being arranged on flexible substrates, so that
Neutral axis, to reduce the tensile stress of conducting wire receiving, prevents it to be broken close to metal layer.
In conclusion although the present invention has been disclosed above in the preferred embodiment, but above preferred embodiment is not to limit
The system present invention, those skilled in the art can make various changes and profit without departing from the spirit and scope of the present invention
Decorations, therefore protection scope of the present invention subjects to the scope of the claims.
Claims (14)
1. a kind of display panel comprising：
Flexible substrate, the flexible substrate include for the first part of pixel array, second part to be arranged and is located at described
Bending part between first part and the second part；
Metal layer, including conducting wire, the conducting wire are located in the flexible substrate, and the conducting wire includes corresponding to the bending part
Part；
Wherein the bending part is provided with recess portion far from the side of the metal layer.
2. display panel according to claim 1, which is characterized in that
The thickness of the bending part is less than the thickness of the first part or the second part.
3. display panel according to claim 2, which is characterized in that
The display panel further includes at least one in flatness layer, pixel defining layer and spacer on the metal layer
It is a；
The thickness of the bending part is less than or equal at least one of the flatness layer, pixel defining layer and spacer
The sum of thickness.
4. display panel according to claim 2, which is characterized in that
The depth of the recess portion meets following formula：
t≤1/3T；
Wherein t is the depth of the recess portion, and T is the thickness of the first part.
5. display panel according to claim 1, which is characterized in that the display panel further includes being located at the metal layer
On interlayer insulating film, be provided with via hole on the interlayer insulating film, in the case where overlooking visual angle, the boundary of the via hole is located at described
Bending part is equipped in the boundary in the region of the recess portion or is equipped with the bending part side in the region of the recess portion
Boundary is overlapped.
6. display panel according to claim 1, which is characterized in that
The recess portion has multiple.
7. display panel according to claim 6, which is characterized in that
Setting is spaced between the recess portion, the spacing between the recess portion is equal, the width of the opening in the section of each recess portion
It spends identical.
8. display panel according to claim 6, which is characterized in that
Densely distributed degree positioned at the recess portion at the edge of the bending part is less than positioned at the recessed of the middle part of the bending part
The densely distributed degree in portion.
9. display panel according to claim 8, which is characterized in that
Spacing between the recess portion at the edge of the bending part be greater than positioned at the middle part of the bending part recess portion it
Between spacing.
10. display panel according to claim 8, which is characterized in that
Width positioned at the opening in the section of the recess portion at the edge of the bending part is greater than positioned at the middle part of the bending part
Recess portion section opening width.
11. display panel according to claim 1, which is characterized in that
The cross sectional shape of the recess portion includes at least one of triangle, trapezoidal, rectangle, semicircle and half elliptic.
12. display panel according to claim 1, which is characterized in that
Packing material is filled in the recess portion, the Young's modulus of the packing material is less than the Young mould of the flexible substrate
Amount.
13. a kind of display module, including the display panel as described in claim 1 to 12 is any.
14. a kind of electronic device, including display module as claimed in claim 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810583018.7A CN108877515A (en) | 2018-06-07 | 2018-06-07 | A kind of display panel, display module and electronic device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810583018.7A CN108877515A (en) | 2018-06-07 | 2018-06-07 | A kind of display panel, display module and electronic device |
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| CN201810583018.7A Pending CN108877515A (en) | 2018-06-07 | 2018-06-07 | A kind of display panel, display module and electronic device |
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| CN110992828B (en) * | 2019-11-28 | 2022-12-20 | 京东方科技集团股份有限公司 | Support substrate for flexible display device and flexible display device |
| CN112133198A (en) * | 2020-09-29 | 2020-12-25 | 厦门天马微电子有限公司 | Stretchable display panel and stretchable display device |
| CN112133198B (en) * | 2020-09-29 | 2022-04-22 | 厦门天马微电子有限公司 | Stretchable display panel and stretchable display device |
| CN112786621A (en) * | 2021-01-11 | 2021-05-11 | 武汉华星光电半导体显示技术有限公司 | Flexible substrate, display panel and display device |
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Application publication date: 20181123 |