CN109346487A - The production method of display panel, display device and display panel - Google Patents
The production method of display panel, display device and display panel Download PDFInfo
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- CN109346487A CN109346487A CN201811437495.9A CN201811437495A CN109346487A CN 109346487 A CN109346487 A CN 109346487A CN 201811437495 A CN201811437495 A CN 201811437495A CN 109346487 A CN109346487 A CN 109346487A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
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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
- G09F9/33—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 being semiconductor devices, e.g. diodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
- H01L27/124—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs with a particular composition, shape or layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
- H01L27/1259—Multistep manufacturing methods
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/122—Pixel-defining structures or layers, e.g. banks
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/131—Interconnections, e.g. wiring lines or terminals
Abstract
The invention discloses the production methods of a kind of display panel, display device and display panel.The display panel includes: substrate, and the substrate includes viewing area and the bent area positioned at the viewing area at least side；The bent area includes being stacked in the first planarization layer of n-layer on the substrate, and the n-layer metal line layer being correspondingly arranged with first planarization layer of n-layer, each metal line layer include more wires；Each first planarization layer is identical as the corresponding metal line layer same layer setting and thickness；Metal wire described in adjacent two layers is not overlapped in the orthographic projection of the substrate, wherein n is the positive integer more than or equal to 1.The scheme of the embodiment of the present invention avoids bent area metal thread breakage, improves the display performance of display panel.
Description
Technical field
The present invention relates to display technology more particularly to the production methods of a kind of display panel, display device and display panel.
Background technique
With the universalness of display product, user also has higher requirement to appearance, the structure etc. of display product, so narrow
The display panel of frame or Rimless should be needed and be given birth to.Narrow frame or Rimless display panel are by by panel
It realizes at the back side that non-displaypart is folded into panel.But in bending process, the metal wire bent in region may be broken,
Influence the display performance of display panel.
Summary of the invention
The present invention provides the production method of a kind of display panel, display device and display panel, to avoid the gold of bent area
Belong to thread breakage, promotes the display performance of display panel.
In a first aspect, the embodiment of the invention provides a kind of display panel, which includes:
Substrate, the substrate include viewing area and the bent area positioned at the viewing area at least side；
The bent area include be stacked in the first planarization layer of n-layer on the substrate, and with the n-layer first
The n-layer metal line layer that planarization layer is correspondingly arranged, each metal line layer include more wires；
Each first planarization layer is identical as the corresponding metal line layer same layer setting and thickness；Adjacent two layers institute
The orthographic projection that metal wire is stated in the substrate does not overlap, wherein n is the positive integer more than or equal to 1.
It is arranged by every one first planarization layer of setting with corresponding metal line layer same layer and thickness is identical, due to metal wire
The thickness of layer is smaller, so that the thickness of the first planarization layer is smaller, so as to reduce the thickness of bent area, so that bent area
Bending neutral line is moved to side of the metal line layer far from substrate, i.e. metal line layer compression stress under compression after the bending of bent area, due to
The ability of metal line layer compression stress under compression is much larger than the ability of Tensile stress, therefore it is possible to prevente effectively from metal thread breakage, mentions
Rise the display performance of display panel.
Optionally, the bent area includes the first sub- planarization layer and the second sub- planarization layer being cascading,
In, the first sub- planarization layer is set to the side that the described second sub- planarization layer closes on the substrate；
The bent area further includes the first metal line layer and the second metal line layer, and first metal line layer includes more
One metal wire, second metal line layer include more second metal wires；
Wherein, first metal line layer is identical as the described first sub- planarization layer same layer setting and thickness, and described second
Metal line layer is identical as the described second sub- planarization layer same layer setting and thickness；
Along the direction for being parallel to the substrate, first metal wire and second metal wire are successively alternately arranged.
In this way, bent area is made to have lesser thickness, it is separate that the bending neutral line of bent area is located at metal line layer
The side of substrate, the first metal wire and the second metal wire compression stress under compression, effectively prevent the first metal wire and second when bending
Metal thread breakage improves the display performance of display panel.And when the first metal wire and the second metal wire are connected in parallel,
In a wires due to bending fracture when, another can work on, and guarantee the normal transmission of signal, improve display surface
The display performance of plate.
Optionally, the bent area includes the first sub- planarization layer being cascading, the second sub- planarization layer and
Three sub- planarization layers, the first sub- planarization layer are set to the side that the described second sub- planarization layer closes on the substrate；
The bent area further includes the first metal line layer, the second metal line layer and third metal line layer, first metal
Line layer includes more first metal wires, and second metal line layer includes more second metal wires, the third metal line layer packet
Include more third metal wires；
Along the direction for being parallel to the substrate, first metal wire, second metal wire and the third metal wire
Successively it is alternately arranged.
In this way, the bending neutral line of bent area is made to be located at side of the metal line layer far from substrate, and closer to gold
Belong to line layer, the compression stress for being subject to metal line layer reduces, and further avoids metal thread breakage, improves the aobvious of display panel
Show performance.And when the first metal wire, the second metal wire and third metal wire are connected in parallel, when wherein wires are due to curved
It fractures when splitting, in addition two metal wires in parallel can work on, and guarantee the normal transmission of signal, improve display panel
Display performance.
Optionally, first metal line layer is identical as the described second sub- planarization layer same layer setting and thickness, and described the
Two metal line layers are identical as the described first sub- planarization layer same layer setting and thickness, the third metal line layer and third
Planarization layer same layer is arranged and thickness is identical.
In this way, the bending neutral line of bent area is located at side of the metal line layer far from substrate and closer to metal wire
Layer, the compression stress for being subject to metal line layer further decrease, further avoid metal thread breakage, improve display panel
Display performance.
Optionally, the spacing between the direction for being parallel to the substrate, the adjacent metal wire is identical.
In this way, being uniformly distributed each metal wire in bent area, the stress that each metal wire is born in bending is more
Uniformly, the stress for avoiding the metal wire of certain positions from bearing is excessive and is easily broken off.
Optionally, the viewing area includes the second planarization layer being set on the substrate；
Along the direction perpendicular to the substrate, the overall thickness of first planarization layer of n-layer is less than second planarization
The thickness of layer.
In this way, ensure that the thickness of bent area is smaller, so that the bending neutral line of bent area is moved to metal line layer
Metal line layer compression stress under compression after the bending of side far from substrate, i.e. bent area, effectively avoids metal thread breakage, promotes display surface
The display performance of plate.
Optionally, the bent area further includes the pixel defining layer being cascading, support column layer and protective layer, described
Pixel defining layer setting closes on the side of the substrate with the support column layer；
The metal wire with a thickness of 0.6-0.8 microns, the pixel defining layer with a thickness of 1.5-1.7 microns, it is described
Support column layer with a thickness of 1.5-1.7 microns, the protective layer with a thickness of 88-92 microns.
Second aspect, the embodiment of the invention also provides a kind of display device, which includes that the present invention is any real
Apply display panel described in example.
The third aspect, the embodiment of the invention also provides a kind of production methods of display panel, this includes:
A substrate is provided, the substrate includes viewing area and the bent area positioned at the viewing area at least side；
The first planarization layer of n-layer is set on the substrate of the bent area, and corresponding with first planarization layer of n-layer
Setting n-layer metal line layer；
Wherein, each first planarization layer is identical as the corresponding metal line layer same layer setting and thickness；It is adjacent
Two layers of metal wire is not overlapped in the orthographic projection of the substrate, wherein n is just whole more than or equal to 1.
It include being stacked in the first planarization layer of n-layer on substrate by the way that bent area is arranged, and flat with n-layer first
Change the n-layer metal line layer that layer is correspondingly arranged, and every one first planarization layer is arranged with corresponding metal line layer same layer and thickness phase
Together, since the thickness of metal line layer is smaller, so that the thickness of the first planarization layer is smaller, so as to reduce the thickness of bent area
Degree, so that the bending neutral line of bent area is moved to side of the metal line layer far from substrate 10, i.e. metal wire after the bending of bent area
Layer compression stress under compression can be effective since the ability of metal line layer compression stress under compression is much larger than the ability of Tensile stress
Metal thread breakage is avoided, the display performance of display panel is promoted.
Optionally, the first planarization layer of n-layer is set on the substrate of the bent area, and flat with the n-layer first
Change the n-layer metal line layer of the corresponding setting of layer, comprising:
Patterned first planarization layer is made in the bent area；
Corresponding metal line layer is made in the patterned area of first planarization layer.
Detailed description of the invention
Fig. 1 is a kind of floor map of display panel provided in an embodiment of the present invention；
Fig. 2 is a kind of bending sketch map of display panel provided in an embodiment of the present invention；
Fig. 3 be in Fig. 1 display panel along the diagrammatic cross-section of hatching AA；
Fig. 4 is a kind of diagrammatic cross-section of bent area provided in an embodiment of the present invention；
Fig. 5 is the diagrammatic cross-section of another bent area provided in an embodiment of the present invention；
Fig. 6 is the diagrammatic cross-section of another bent area provided in an embodiment of the present invention；
Fig. 7 is also a kind of diagrammatic cross-section of bent area provided in an embodiment of the present invention；
Fig. 8 is a kind of schematic diagram of display device provided in an embodiment of the present invention；
Fig. 9 is a kind of flow chart of the production method of display panel provided in an embodiment of the present invention；
Figure 10 is a kind of schematic diagram of first planarization layer provided in an embodiment of the present invention；
Figure 11 is a kind of schematic diagram of metal line layer provided in an embodiment of the present invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
It as described in background, is in the prior art the narrow frame or Rimless of realizing display panel, right
The metal wire of bent area may be broken during display panel is bent, through inventor the study found that there is this
The reason of kind of problem, is: after the bending of bent area, film layer where metal wire be located at bending neutral line (neither Tensile stress nor
The film layer of compression stress under compression) top, i.e. metal wire Tensile stress, and the ability that metal wire bears tensile stress is poor, leads
Metal wire after bending is caused to be easily broken off.Based on this, the invention proposes following solution:
The present invention provides a kind of display panel, which includes:
Substrate, the substrate include viewing area and the bent area positioned at the viewing area at least side；
The bent area include be stacked in the first planarization layer of n-layer on the substrate, and with the n-layer first
The n-layer metal line layer that planarization layer is correspondingly arranged, each metal line layer include more wires；
Each first planarization layer is identical as the corresponding metal line layer same layer setting and thickness；Adjacent two layers institute
The orthographic projection that metal wire is stated in the substrate does not overlap, wherein n is the positive integer more than or equal to 1.
The present embodiment is arranged by every one first planarization layer of setting with corresponding metal line layer same layer and thickness is identical, by
It is smaller in the thickness of metal line layer, so that the thickness of the first planarization layer is smaller, so as to reduce the thickness of bent area, so that
The bending neutral line of bent area is moved to side of the metal line layer far from substrate, i.e., metal line layer is compressed after the bending of bent area answers
Power, since the ability of metal line layer compression stress under compression is much larger than the ability of Tensile stress, it is possible to prevente effectively from metal wire
Fracture, promotes the display performance of display panel.
Fig. 1 is a kind of floor map of display panel provided in an embodiment of the present invention, and Fig. 2 is that the embodiment of the present invention provides
A kind of display panel bending sketch map, Fig. 3 be in Fig. 1 display panel along hatching AA diagrammatic cross-section, with reference to Fig. 1-
Fig. 3, the display panel include:
Substrate 10, substrate 10 include viewing area 11 and the bent area 12 positioned at at least side of viewing area 11；
Bent area 12 includes being stacked in the first planarization layer of n-layer 20 on substrate 10, and planarize with n-layer first
The n-layer metal line layer that layer 20 is correspondingly arranged, each metal line layer includes more wires 30；
Every one first planarization layer 20 is arranged with corresponding metal line layer same layer and thickness is identical；Adjacent two layers metal wire 30
It is not overlapped in the orthographic projection of substrate 10, wherein n is the positive integer more than or equal to 1.
Wherein, bent area 12 is the region that bending deformation occurs for display panel, and bent area 12 is shown to far from display panel
The side in face is bent, and substrate 10 is located on the inside of the bending of bent area 12, and the film layer of 10 side of substrate is closed on positioned at bending neutral line
Compression stress under compression, positioned at bending film layer Tensile stress of the neutral line far from 10 side of substrate.The present embodiment is merely exemplary to be shown
The position of bent area 12 is gone out, not limitation of the invention.In addition, the present embodiment is illustratively shown along parallel substrate 10
The metal routing in direction, variant layer is successively alternately arranged, and avoids interfering with each other between each layer metal wire, not to of the invention
It limits.In other embodiments, it also can according to need and other arrangement modes be set.
By the way that the first planarization layer of n-layer 20 is arranged in bent area 12, and it is correspondingly arranged with the first planarization layer of n-layer 20
N-layer metal line layer, and every one first planarization layer 20 is arranged with corresponding metal line layer same layer and thickness is identical, due to metal wire
The thickness of layer is smaller, so that the thickness of the first planarization layer 20 is smaller, so as to reduce the thickness of bent area, so that bent area
Bending neutral line be moved to side of the metal line layer far from substrate 10, i.e., bent area 12 bend after metal line layer is compressed answers
Power, since the ability of 30 compression stress under compression of metal wire is much larger than the ability of Tensile stress, it is possible to prevente effectively from metal wire
30 fractures, promote the display performance of display panel.
It should be noted that merely exemplary in Fig. 2 show one layer of metal wire 30, not limitation of the invention.Separately
Outside, the present embodiment to the specific value of n and is not specifically limited, and can be determined according to the specific thickness of metal line layer, only be needed to protect
The overall thickness for demonstrate,proving the first planarization layer of n-layer is smaller, so that bent area has lesser thickness, so that the bending neutral line of bent area
It is moved to side of the metal line layer far from substrate.Illustratively, n=1,2 or 3 etc. can be set.
Optionally, with reference to Fig. 2, viewing area 11 includes the second planarization layer 70 being set on substrate 10；Along perpendicular to base
The direction of plate 10, the thickness of the overall thickness of the first planarization layer of n-layer less than the second planarization layer 70.In this way, ensure that curved
The thickness of folding area 12 is smaller, so that the bending neutral line of bent area 12 is moved to side of the metal line layer far from substrate 10, i.e., it is curved
Metal line layer compression stress under compression after folding area 12 is bent effectively avoids metal wire 30 from being broken, promotes the display performance of display panel.
Specifically, the second planarization layer 70 can use same material with the first planarization layer of n-layer, so as to make together
It is standby, illustratively, when preparing the first planarization layer, the smoothing material that a flood is covered with viewing area and non-display area can be coated with
Layer, is patterned the smoothing material layer of bent area 12, prepares metal line layer in patterned area, that is, completes one layer first
Then the preparation of planarization layer and one layer of metal line layer prepares next the first planarization layer of layer and next layer of gold according to above-mentioned steps
Belong to line layer, until completing the preparation of the first planarization layer of n-layer.Then smoothing material layer, the image conversion planarization material are coated
The bed of material removes the part of bent area 12, completes the preparation of the second planarization layer 70.
The specific structure of bent area is specifically described when taking different value to n below with reference to specific attached drawing:
Fig. 4 is a kind of diagrammatic cross-section of bent area provided in an embodiment of the present invention, and with reference to Fig. 4, bent area includes one layer
First planarization layer 20 and one layer of metal line layer, the metal line layer include more wires 30, first planarization layer 20 and gold
Belong to the setting of line layer same layer and thickness is equal.
Specifically, by one layer of first planarization layer 20 of setting and one layer of metal line layer, and the first planarization layer 20 and gold
Belong to line layer same layer and thickness is equal, the thickness of bent area is substantially reduced, so that the bending neutral line of bent area is located at metal wire
Side of the layer far from substrate 10,30 compression stress under compression of metal wire after the bending of bent area, effectively avoids metal wire 30 from being broken, and is promoted aobvious
Show the display performance of panel.
In addition, bent area further includes the pixel defining layer 40 being cascading, support column layer 50 and protection with reference to Fig. 4
Layer 60, pixel defining layer 40 is set to the side that support column layer 50 closes on substrate 10；Metal wire 30 it is micro- with a thickness of 0.6-0.8
Rice, pixel defining layer 40 with a thickness of 1.5-1.7 microns, support column layer 50 with a thickness of 1.5-1.7 microns, the thickness of protective layer 60
Degree be 88-92 microns, substrate 10 with a thickness of 18-19 microns.
Wherein, pixel defining layer 40, support column layer 50 and protective layer 60 are used to protect the metal line layer of bent area, in addition as
Plain definition layer 40 is used to limit multiple pixel regions in viewing area, and support column layer 50 is used to support the luminescent layer system of display panel
The mask plate used during standby.Pixel defining layer 40, support column layer 50 and protective layer 60 are all made of organic material, improve curved
The bending resistance of folding area.
Stress condition when inventor bends bent area using above-mentioned data is emulated, and is found by emulation, when
When bent area includes one layer of first planarization layer and one layer of metal line layer, the position of neutral line is located in protective layer 60, when bending
30 compression stress under compression of metal wire effectively prevents the fracture of metal wire 30, improves the display performance of display panel.
Fig. 5 is the diagrammatic cross-section of another bent area provided in an embodiment of the present invention, with reference to Fig. 5, bent area include according to
Secondary the first sub- planarization layer 21 and the second sub- planarization layer 22 being stacked, wherein the first sub- planarization layer 21 is set to
Two sub- planarization layers 22 close on the side of substrate 10；
Bent area further includes the first metal line layer and the second metal line layer, and the first metal line layer includes more first metal wires
31, the second metal line layer includes more second metal wires 32；
Wherein, the first metal line layer is identical as the first sub- 21 same layer of planarization layer setting and thickness, the second metal line layer with
Second sub- 22 same layer of planarization layer is arranged and thickness is identical；
Along the direction for being parallel to substrate, the first metal wire 31 and the second metal wire 32 are successively alternately arranged.
Specifically, by setting two layers of first planarization layers (the first sub- planarization layer 21 and the second sub- planarization layer 22) and
Double layer of metal line layer (the first metal line layer and the second metal line layer) makes bent area have lesser thickness, the bending of bent area
Neutral line is located at side of the metal line layer far from substrate, 32 compression stress under compression of the first metal wire 31 and the second metal wire when bending,
The first metal wire 31 and the fracture of the second metal wire 32 are effectively prevented, the display performance of display panel is improved.
In addition, the thickness of the first metal wire 31 and the second metal wire is 0.6-0.8 microns, the thickness of pixel defining layer 40
Be 1.5-1.7 microns, support column layer 50 with a thickness of 1.5-1.7 microns, protective layer 60 with a thickness of 88-92 microns, substrate 10
With a thickness of 18-19 microns when, inventor by emulation discovery, when using two layers of first planarization layers and double layer of metal line layer,
It is located at protective layer 60 and support column layer relative to using the bending neutral line of one layer of planarization layer and one layer of metal line layer, bent area
Between 50, closer to metal line layer, the compression stress for being subject to metal line layer reduces, and further avoids metal thread breakage, mentions
The display performance of display panel is risen.And it is successively alternately arranged, is made by the first metal wire 31 of setting and the second metal wire 32
Metal wire is uniformly arranged in corresponding metal line layer so that each metal wire stress is more uniform, avoid part metals line by
Power is excessive and is easily broken off.
In addition, the first metal wire 31 can be connected in parallel with the second metal wire 32 so that ought wherein a wires due to
When bending fracture, another can work on, and guarantee the normal transmission of signal, improve the display performance of display panel.Show
Example property, the radical of the first metal wire 31 can be equal to the root of the second metal wire 32 in the second metal line layer in the first metal line layer
Number, along the direction for being parallel to substrate 10, every two adjacent the first metal wires 31 and the second metal wire 32 are connected in parallel.
It should be noted that the present embodiment it is merely exemplary show the parallel connection of the first metal wire 31 and the second metal wire 32
Mode, not limitation of the invention can be set according to specific needs in other embodiments.
Fig. 6 is the diagrammatic cross-section of another bent area provided in an embodiment of the present invention, and Fig. 7 is that the embodiment of the present invention provides
Also a kind of diagrammatic cross-section of bent area, with reference to Fig. 6 and Fig. 7, bent area include be cascading first son planarization
The 21, second sub- planarization layer 22 of layer and the sub- planarization layer 23 of third, the first sub- planarization layer 21 are set to the second sub- planarization layer
22 close on the side of substrate 10；
Bent area further includes the first metal line layer, the second metal line layer and third metal line layer, and the first metal line layer includes
More first metal wires 31, the second metal line layer include more second metal wires 32, and third metal line layer includes more third gold
Belong to line 33；
Along the direction for being parallel to substrate, the first metal wire 31, the second metal wire 32 and third metal wire 33 are successively alternately arranged
Column.
Specifically, pass through three layer of first planarization layer of setting (the first sub- planarization layer 21, the second sub- planarization layer 22 and the
Three sub- planarization layers 23) and double layer of metal line layer (the first metal line layer, the second metal line layer and third metal line layer) make it is curved
Folding area has lesser thickness, and the bending neutral line of bent area is located at side of the metal line layer far from substrate 10, first when bending
32 compression stress under compression of metal wire 31 and the second metal wire effectively prevents the first metal wire 31 and the fracture of the second metal wire 32, mentions
The display performance of display panel is risen.And by the first metal wire 31 of setting, the second metal wire 32 and third metal wire 33 according to
It is secondary to be alternately arranged, so that metal wire is uniformly arranged in corresponding metal line layer, so that each metal wire stress is more uniform, avoid
Part metals line stress is excessive and is easily broken off.
In addition, the thickness of the first metal wire 31 and the second metal wire is 0.6-0.8 microns, the thickness of pixel defining layer 40
Be 1.5-1.7 microns, support column layer 50 with a thickness of 1.5-1.7 microns, protective layer 60 with a thickness of 88-92 microns, substrate 10
With a thickness of 18-19 microns when, inventor by emulation discovery, when using three layer of first planarization layer and three-layer metal line layer,
Relative to two layers of planarization layer and double layer of metal line layer is used, the bending neutral line of bent area makes metal closer to metal line layer
The compression stress that line layer is subject to reduces, and further avoids metal thread breakage, improves the display performance of display panel.
In addition, the first metal wire 31, the second metal wire 32 and third metal wire 33 can be connected in parallel, so that ought wherein one
When wires are due to bending fracture, in addition two metal wires in parallel can work on, and guarantee the normal transmission of signal, mention
The display performance of display panel is risen.Illustratively, the radical of the first metal wire 31, the second metal line layer in the first metal line layer
In the second metal wire 32 radical and third metal line layer in the radical of third metal wire can be equal, along being parallel to substrate
10 direction, every three the first adjacent metal wires 31, the second metal wire 32 and third metal wire 33 are connected in parallel.
It should be noted that the present embodiment is merely exemplary to the first metal wire 31, the second metal wire 32 and third metal
The parallel way of line 33 is illustrated, not limitation of the invention.In addition, the present embodiment is to three-layer metal line layer and three layers
The corresponding relationship of first planarization layer is simultaneously not specifically limited, and can need to set according to the position of neutral line.
Illustratively, with reference to Fig. 6, the first metal line layer is identical as the first sub- 21 same layer of planarization layer setting and thickness, the
Two metal line layers are identical as the second sub- 22 same layer of planarization layer setting and thickness, third metal line layer and third self-planarization layer 23
Same layer is arranged and thickness is identical.Inventor is located at support by emulation discovery, the bending neutral line position of setting bent area in this way
Column layer 50, the compression stress for being subject to metal line layer reduce, and further avoid metal thread breakage, improve the aobvious of display panel
Show performance.
Illustratively, with reference to Fig. 7, the first metal line layer is identical as the second sub- 22 same layer of planarization layer setting and thickness, the
Two metal line layers are identical as the first sub- 21 same layer of planarization layer setting and thickness, third metal line layer and the sub- planarization layer 23 of third
Same layer is arranged and thickness is identical.Inventor is located at support by emulation discovery, the bending neutral line position of setting bent area in this way
Between column layer 50 and pixel defining layer 40, positioned at side of the metal line layer far from substrate 10 and closer to metal line layer, make gold
Belong to the compression stress that line layer is subject to further decrease, further avoids metal thread breakage, improve the display of display panel
Energy.
Optionally, with reference to Fig. 7, along the direction for being parallel to substrate 10, it is d that the spacing between adjacent wires is identical.
It is identical by the spacing between setting adjacent wires, so that each metal wire is uniformly distributed in bent area, bending
When the stress that bears of each metal wire it is more uniform, the stress for avoiding the metal wire of certain positions from bearing is excessive and is easily broken off.And
And inventor, by emulation discovery, when the spacing being arranged between adjacent wires is identical relative to spacing difference, bending is neutral
Layer so that the compression stress that metal wire receives is smaller, further avoids metal thread breakage, improves aobvious closer to metal line layer
Show the display performance of panel.
In addition, it is necessary to explanation, the present embodiment for display panel concrete type and be not specifically limited, this implementation
The scheme of example can be applied to arbitrarily be related to the display panel of bent area, and illustrative display panel can be OLED display surface
Plate, light emitting diode with quantum dots QLED display panel, micro- light emitting diode microLED display panel stretch OLED display surface
Plate etc..
The present embodiment additionally provides a kind of display device, and Fig. 8 is a kind of showing for display device provided in an embodiment of the present invention
It is intended to, with reference to Fig. 8, which includes display panel 200 provided by any embodiment of the invention.Display device 100
Equipment can be shown for mobile phone, tablet computer etc..
The present embodiment additionally provides a kind of production method of display panel, and Fig. 9 is provided in an embodiment of the present invention a kind of aobvious
The flow chart for showing the production method of panel, with reference to Fig. 9, this method comprises:
Step 810 provides a substrate, and substrate includes viewing area and the bent area positioned at viewing area at least side；
The first planarization layer of n-layer is arranged in step 820 on the substrate of bent area, and corresponding with the first planarization layer of n-layer
Setting n-layer metal line layer；Wherein, every one first planarization layer is arranged with corresponding metal line layer same layer and thickness is identical；
Adjacent two layers metal wire is not overlapped in the orthographic projection of substrate, wherein n is just whole more than or equal to 1.
The present embodiment includes being stacked in the first planarization layer of n-layer on substrate, and and n-layer by setting bent area
The n-layer metal line layer that first planarization layer is correspondingly arranged, and every one first planarization layer is arranged with corresponding metal line layer same layer
And thickness is identical, since the thickness of metal line layer is smaller, so that the thickness of the first planarization layer is smaller, so as to reduce bending
The thickness in area, so that the bending neutral line of bent area is moved to side of the metal line layer far from substrate, i.e. gold after the bending of bent area
Belong to line layer compression stress under compression, it, can be with since the ability of metal line layer compression stress under compression is much larger than the ability of Tensile stress
Metal thread breakage effectively is avoided, promotes the display performance of display panel.
Figure 10 is a kind of schematic diagram of first planarization layer provided in an embodiment of the present invention, and Figure 11 is that the embodiment of the present invention mentions
It is flat that n-layer first is optionally arranged with reference to Figure 10-Figure 11 on the substrate of bent area for a kind of schematic diagram of the metal line layer supplied
Change layer, and the n-layer metal line layer of setting corresponding with the first planarization layer of n-layer, comprising:
With reference to Figure 10, patterned first planarization layer 20 is made in bent area, is specially coated with one layer on the substrate 10
Smoothing material layer is removed the smoothing material layer of partial region by techniques such as lithography and etchings, forms the of image conversion
One planarization layer 20.
With reference to Figure 11, corresponding metal line layer is made in the patterned area of the first planarization layer 20.Can specifically it pass through
Electroplating technology directly prepares metal wire 30 in image conversion region, forms metal line layer.
The preparation that one layer of first planarization layer and one layer of metal line layer are completed according to above-mentioned steps, repeats the above steps successively
Complete the preparation of n-layer the first planarization layer and n-layer metal line layer.
In addition, after the preparation of completion the first planarization layer of n-layer and n-layer metal line layer, it can be in the first planarization layer and gold
Belong to line layer surface and is sequentially prepared pixel defining layer, support column layer and protective layer.
The display panel that the production method of display panel provided in this embodiment is provided with any embodiment of that present invention belongs to
Identical inventive concept has corresponding beneficial effect, not in the detailed technical detail of the present embodiment, is detailed in of the invention any real
The display panel of example offer is provided.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts, be combined with each other and substitutes without departing from protection scope of the present invention.Therefore, although by above embodiments to this
Invention is described in further detail, but the present invention is not limited to the above embodiments only, is not departing from present inventive concept
In the case of, it can also include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (10)
1. a kind of display panel characterized by comprising
Substrate, the substrate include viewing area and the bent area positioned at the viewing area at least side；
The bent area includes being stacked in the first planarization layer of n-layer on the substrate, and flat with the n-layer first
Change the n-layer metal line layer that layer is correspondingly arranged, each metal line layer includes more wires；
Each first planarization layer is identical as the corresponding metal line layer same layer setting and thickness；Gold described in adjacent two layers
Belong to line not overlap in the orthographic projection of the substrate, wherein n is the positive integer more than or equal to 1.
2. display panel according to claim 1, it is characterised in that:
The bent area includes the first sub- planarization layer and the second sub- planarization layer being cascading, wherein described first
Sub- planarization layer is set to the side that the described second sub- planarization layer closes on the substrate；
The bent area further includes the first metal line layer and the second metal line layer, and first metal line layer includes more first gold medals
Belong to line, second metal line layer includes more second metal wires；
Wherein, first metal line layer is identical as the described first sub- planarization layer same layer setting and thickness, second metal
Line layer is identical as the described second sub- planarization layer same layer setting and thickness；
Along the direction for being parallel to the substrate, first metal wire and second metal wire are successively alternately arranged.
3. display panel according to claim 1, it is characterised in that:
The bent area includes the first sub- planarization layer, the second sub- planarization layer and third the planarization being cascading
Layer, the first sub- planarization layer are set to the side that the described second sub- planarization layer closes on the substrate；
The bent area further includes the first metal line layer, the second metal line layer and third metal line layer, first metal line layer
Including more first metal wires, second metal line layer includes more second metal wires, and the third metal line layer includes more
Root third metal wire；
Along the direction for being parallel to the substrate, first metal wire, second metal wire and the third metal wire are successively
It is alternately arranged.
4. display panel according to claim 3, it is characterised in that:
First metal line layer is identical as the described second sub- planarization layer same layer setting and thickness, second metal line layer with
The first sub- planarization layer same layer is arranged and thickness is identical, the third metal line layer and the sub- planarization layer same layer of the third
It is arranged and thickness is identical.
5. display panel according to claim 1, it is characterised in that:
Along the direction for being parallel to the substrate, the spacing between the adjacent metal wire is identical.
6. display panel according to claim 1, it is characterised in that:
The viewing area includes the second planarization layer being set on the substrate；
Along the direction perpendicular to the substrate, the overall thickness of first planarization layer of n-layer is less than second planarization layer
Thickness.
7. display panel according to claim 1, it is characterised in that:
The bent area further includes the pixel defining layer being cascading, support column layer and protective layer, the pixel defining layer
The side that the substrate is closed on the support column layer is set；
The metal wire with a thickness of 0.6-0.8 microns, the pixel defining layer with a thickness of 1.5-1.7 microns, the support
Column layer with a thickness of 1.5-1.7 microns, the protective layer with a thickness of 88-92 microns.
8. a kind of display device, which is characterized in that including the described in any item display panels of claim 1-7.
9. a kind of production method of display panel characterized by comprising
A substrate is provided, the substrate includes viewing area and the bent area positioned at the viewing area at least side；
The first planarization layer of n-layer is set on the substrate of the bent area, and corresponding with first planarization layer of n-layer is set
The n-layer metal line layer set；
Wherein, each first planarization layer is identical as the corresponding metal line layer same layer setting and thickness；Adjacent two layers
The metal wire is not overlapped in the orthographic projection of the substrate, wherein n is just whole more than or equal to 1.
10. according to the method described in claim 9, it is characterized in that, setting n-layer first is flat on the substrate of the bent area
Change layer, and the n-layer metal line layer of setting corresponding with first planarization layer of n-layer, comprising:
Patterned first planarization layer is made in the bent area；
Corresponding metal line layer is made in the patterned area of first planarization layer.
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