CN111048566A - Organic light-emitting display panel and display device - Google Patents
Organic light-emitting display panel and display device Download PDFInfo
- Publication number
- CN111048566A CN111048566A CN201911329636.XA CN201911329636A CN111048566A CN 111048566 A CN111048566 A CN 111048566A CN 201911329636 A CN201911329636 A CN 201911329636A CN 111048566 A CN111048566 A CN 111048566A
- Authority
- CN
- China
- Prior art keywords
- display panel
- organic light
- emitting display
- thickness
- bending
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005452 bending Methods 0.000 claims abstract description 91
- 239000002184 metal Substances 0.000 claims abstract description 54
- 239000000758 substrate Substances 0.000 claims abstract description 34
- 239000010410 layer Substances 0.000 claims description 173
- 239000011241 protective layer Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000010408 film Substances 0.000 description 13
- 239000011229 interlayer Substances 0.000 description 7
- 230000001681 protective effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 239000012790 adhesive layer Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000012044 organic layer Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
-
- 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
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
- H10K77/10—Substrates, e.g. flexible substrates
- H10K77/111—Flexible substrates
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention discloses an organic light-emitting display panel and a display device, in the extending direction of a bending shaft along a bending area, the organic insulating layer between a second metal layer and a substrate is set to have at least two different thicknesses, and routing lines are arranged on the organic insulating layers with different thicknesses, that is, the metal trace along the extending direction of the bending axis will form a wavy shape, and when bending along the bending axis, the stress along the extending direction of the bending axis will be generated, the propagation medium of the stress is rugged, the rugged propagation medium can act as a stress relief path, therefore, the organic insulating layers with different thicknesses can release the stress generated during bending, so that the lead region and the part of the binding region close to the bending region have no concentrated stress, therefore, the problem that the metal wire on the lead area and the part of the binding area close to the bending area is broken is avoided.
Description
Technical Field
The invention relates to the technical field of display, in particular to an organic light-emitting display panel and a display device.
Background
Organic Light Emitting Diode (OLED) Display devices are becoming the first choice of screens, and have many advantages of self-luminescence, high Light Emitting efficiency, short response time, high definition and contrast, and the like, and meanwhile, the screens can be ensured to have certain flexibility and adaptability. With the development of flexible display screens, people have an increasing desire for foldable display products.
A schematic cross-sectional structure of a conventional flexible display device is shown in fig. 1, in which a display panel 01 and a touch panel 02 are attached together through an adhesive layer (not shown) in a display area AA, and a protective cover plate (not shown) is further disposed on a side of the touch panel 02 opposite to the display panel 01; the display panel 01 may have a structure in which a bent portion of the display panel 01 is bent to a back surface of the display panel 01, the back surface of the display panel 01 includes a protective Film 03, a first support layer 04, an adhesive layer 05, and a second support layer 06 for supporting the bent portion, and may further include a Chip On Film (COF)07 electrically connected to the display panel 01, a flexible circuit board 08, and the like. Specifically, the flexible display device has a lead region BB, a Bending region CC, and a bonding region DD in a non-display region, the Bending region CC generally including an organic layer and a metal Line layer (bonding Line) on a flexible substrate. When the display panel 01 is bent in the bending region CC, the lead region BB (large dotted circle portion) and the portion (small dotted circle portion) of the bonding region DD close to the bending region CC become main stress concentration points, and the metal traces at the two stress concentration points are easily broken. Therefore, how to prevent the metal traces at the two stress concentration points from breaking is a technical problem that needs to be solved urgently by those skilled in the art.
Disclosure of Invention
The embodiment of the invention provides an organic light-emitting display panel and a display device, which are used for solving the problems in the background art.
Therefore, an embodiment of the present invention provides an organic light emitting display panel, including a display region, and a lead region, a bending region, and a binding region that are sequentially and continuously arranged on one side of the display region, where the lead region is located between the display region and the bending region; the lead region and the binding region comprise a first metal layer and an inorganic insulating layer which are stacked on a substrate, and the bending region comprises an organic insulating layer and a second metal layer which are stacked on the substrate; the second metal layer is electrically connected with the first metal layer through a via hole penetrating through the inorganic insulating layer;
the second metal layer comprises a plurality of routing wires which extend along a first direction and are arranged along a second direction, the second direction is the extending direction of the bending shaft of the bending area, and the first direction is perpendicular to the second direction;
and in the second direction, the organic insulating layer has at least two different thicknesses, and the organic insulating layers with different thicknesses are provided with the routing lines.
Optionally, in a specific implementation manner, in the organic light emitting display panel provided in the embodiment of the present invention, the thickness of the organic insulating layer includes a plurality of first thicknesses and second thicknesses that are alternately distributed, where the first thicknesses are greater than the second thicknesses;
and at least one wire is correspondingly arranged on each organic insulating layer with the first thickness and each organic insulating layer with the second thickness.
Optionally, in a specific implementation, in the organic light emitting display panel provided in the embodiment of the present invention, one routing line is correspondingly disposed on each of the organic insulating layers with the first thickness and each of the organic insulating layers with the second thickness.
Optionally, in a specific implementation, in the organic light emitting display panel provided in the embodiment of the present invention, the first thickness is greater than or equal to 1 μm and less than or equal to 2 μm, and the second thickness is greater than or equal to 0.5 μm and less than or equal to 1.5 μm.
Optionally, in practical implementation, in the organic light emitting display panel provided in the embodiment of the present invention, the first thickness is 1.5 μm, and the second thickness is 0.7 μm.
Optionally, in a specific implementation, in the organic light emitting display panel provided in the embodiment of the present invention, at a portion of the bending region close to the lead region, the organic insulating layer with the first thickness further has grooves located at two sides of the corresponding trace.
Optionally, in a specific implementation, in the organic light emitting display panel provided in the embodiment of the present invention, at a portion of the bending region close to the bonding region, the organic insulating layer with the first thickness further has grooves located at two sides of the corresponding trace.
Optionally, in a specific implementation manner, in the organic light emitting display panel provided in the embodiment of the present invention, a depth of the groove is a difference between the first thickness and the second thickness.
Optionally, in a specific implementation, in the organic light emitting display panel provided in the embodiment of the present invention, along the first direction, a width of the groove is greater than or equal to 2 μm and less than or equal to 4 μm; the width of the groove is greater than or equal to 4 μm and less than or equal to 6 μm along the second direction.
Optionally, in a specific implementation manner, in the organic light emitting display panel provided in the embodiment of the present invention, along the first direction, a width of the groove is 3 μm; the width of the groove along the second direction is 5 μm.
Optionally, in a specific implementation manner, in the organic light emitting display panel provided in the embodiment of the present invention, a surface of the inorganic insulating layer facing the second metal layer and a surface of the organic insulating layer facing the second metal layer are flush with each other.
Optionally, in a specific implementation, in the organic light emitting display panel provided in the embodiment of the present invention, the lead region and the bonding region further include a buffer layer located between the substrate and the first metal layer, and the organic insulating layer in the bending region is in direct contact with the substrate.
Optionally, in specific implementation, in the organic light emitting display panel provided in the embodiment of the present invention, the organic light emitting display panel further includes a planarization layer located on a side of the second metal layer away from the substrate, a pixel defining layer located on a side of the planarization layer away from the substrate, and a protection layer located on a side of the pixel defining layer away from the substrate.
Accordingly, based on the same inventive concept, embodiments of the present invention further provide a display device, including the organic light emitting display panel according to any one of the above aspects of the present invention.
The embodiment of the invention has the following beneficial effects:
in the extending direction along the bending axis of the bending region, the organic insulating layer between the second metal layer and the substrate is set to have at least two different thicknesses, and the organic insulating layers with different thicknesses are all provided with the routing, namely the metal routing along the extending direction of the bending axis can form a high-low wavy shape, when the organic insulating layer is bent along the bending axis, the stress along the extending direction of the bending axis can be generated, the stress propagation medium is high-low wavy, the high-low wavy propagation medium can be used as a stress releasing path, namely the stress is propagated in the propagation media with different thicknesses, and the stress is gradually weakened in the propagation process, so that the stress generated in bending can be released by the organic insulating layers with different thicknesses, and the concentrated stress does not exist in the lead region and the part close to the bending region in the binding region, therefore, the problem that the metal wire on the lead area and the part of the binding area close to the bending area is broken is avoided.
Drawings
Fig. 1 is a schematic cross-sectional view illustrating an organic light emitting display device according to a related art;
fig. 2 is a schematic cross-sectional view of a portion of a film layer of an organic light emitting display panel according to an embodiment of the invention;
fig. 3 is a second schematic diagram illustrating a cross-sectional structure of a portion of a film layer of an organic light emitting display panel according to an embodiment of the invention;
fig. 4 is a schematic top view of a portion of a film layer of an organic light emitting display panel according to an embodiment of the present invention;
fig. 5 is a third schematic cross-sectional view illustrating a partial film layer of an organic light emitting display panel according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a stress releasing path when the organic light emitting display panel provided by the embodiment of the invention is bent;
FIG. 7 is a fourth schematic cross-sectional view illustrating a partial film layer of an OLED panel according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, specific embodiments of an organic light emitting display panel and a display device according to embodiments of the present invention are described in detail below with reference to the accompanying drawings.
The thicknesses and shapes of the respective layers in the drawings do not reflect the true proportions of the organic light emitting display panel, and are only intended to schematically illustrate the present invention.
An embodiment of the present invention provides an organic light emitting display panel, as shown in fig. 2 to 4, including a display area AA, and a lead area BB, a bending area CC, and a bonding area DD that are sequentially and continuously arranged on one side of the display area AA, where the lead area BB is located between the display area AA and the bending area CC, and only a part of the lead area BB near the bending area CC and a part of the bonding area DD near the bending area CC are shown in fig. 2 and 3; the lead region BB and the binding region DD comprise a first metal layer 2 and an inorganic insulating layer 3 which are arranged on the substrate base plate 1 in a stacked mode, and the bending region CC comprises an organic insulating layer 4 and a second metal layer 5 which are arranged on the substrate base plate 1 in a stacked mode; the second metal layer 5 is electrically connected with the first metal layer 2 through a via hole penetrating the inorganic insulating layer 3;
specifically, as shown in fig. 4, the second metal layer 5 includes a plurality of traces (51 and 51') extending along a first direction X and arranged along a second direction Y, the second direction Y is an extending direction of the bending axis L of the bending region CC, and the first direction X is perpendicular to the second direction Y; specifically, the first metal layer 2 of the lead area BB has a plurality of leads (not shown in the figure) electrically connected to the signal lines in the display area AA, the leads being used to electrically connect the signal lines in the display area AA to the pads of the bonding area DD through the traces (51 and 51') of the second metal layer 5;
in the second direction Y, the organic insulating layer 4 has at least two different thicknesses, and the organic insulating layers 4 with different thicknesses are all provided with traces (51 or 51 '), specifically, fig. 2 and fig. 3 are schematic cross-sectional views of designing organic insulating layers 4 with different thicknesses, respectively, the thickness of the organic insulating layer 4 in fig. 2 is greater than the thickness of the organic insulating layer 4 in fig. 3, the thicknesses of the organic insulating layers 4 under the traces 51 and 51 ' in fig. 4 are different, where the thickness of the organic insulating layer 4 under the traces 51 is greater than the thickness of the organic insulating layer 4 under the traces 51 ', for example.
In the organic light emitting display panel provided by the embodiment of the present invention, in the extending direction along the bending axis L of the bending region BB, the organic insulating layer 4 located between the second metal layer 5 and the substrate base plate 1 is set to have at least two different thicknesses, and the routing lines (51 or 51 ') are respectively disposed on the organic insulating layers 4 with different thicknesses, that is, the metal routing lines (51 and 51') in the extending direction along the bending axis L will form a rugged shape, when bending is performed along the bending axis L, a stress in the extending direction along the bending axis L will be generated, a propagation medium of the stress will be rugged, the rugged propagation medium can be used as a stress releasing path, that is, the stress propagates in the propagation medium with different thicknesses, and the stress will be gradually weakened during the propagation, so the organic insulating layers 4 with different thicknesses are designed to release the stress generated during bending, the parts of the lead area BB and the binding area DD, which are close to the bending area CC, have no concentrated stress, so that the problem that metal wires on the parts of the lead area BB and the binding area DD, which are close to the bending area CC, are broken is solved.
Further, in a specific implementation, in the above-mentioned organic light emitting display panel provided by the embodiment of the present invention, as shown in fig. 5, the substrate 1 may include a first flexible substrate 11, a first buffer layer 12, and a second flexible substrate 13, which are stacked, and the inorganic insulating layer 3 may include a gate insulating layer 31, a first interlayer insulating layer 32, and a second interlayer insulating layer 33, which are stacked; as shown in fig. 2, 3 and 5, the lead region BB and the bonding region DD of the organic light emitting display panel may further include: a buffer layer 6 positioned between the substrate base plate 1 and the inorganic insulating layer 3, a planarization layer 7 positioned at one side of the second metal layer 5 far away from the substrate base plate 1, and a pixel defining layer 8 positioned at one side of the planarization layer 7 far away from the substrate base plate 1; as shown in fig. 5, the organic light emitting display panel may further include a third interlayer insulating layer 9 between the planarization layer 7 and the second metal layer 5 and a support protective film 10 on a side of the substrate base plate 1 opposite to the buffer layer 6, and optionally, a portion of the organic insulating layer 4 pointing to the direction of the lead region BB along the bending axis L in a direction perpendicular to the plane of the substrate base plate 1 covers at least a boundary aa of the support protective film 10 on a side close to the bending axis L; the organic insulation layer 4 along the bending axis L pointing to the direction of the bonding region DD covers at least the boundary bb of the support protective film 10 on the side close to the bending axis L. Specifically, in fig. 2, 3, and 5, since the inorganic layer is brittle and easily broken, the inorganic layer (the buffer layer 6, the gate insulating layer 31, the first interlayer insulating layer 32, and the second interlayer insulating layer 33) between the base substrate 1 and the second metal layer 5 lining the bending region BB is etched away, the etched inorganic layer portion is filled with the organic insulating layer 4, and the organic insulating layer 4 of the bending region CC is in direct contact with the substrate 1, so that there is no inorganic layer between the second metal layer 5 and the substrate 1, and thus the problem of film breakage does not occur in the bending region CC during bending. Specifically, as shown in fig. 5, fig. 5 is a partial cross-sectional view of the display panel, and the organic insulating layer 4 has at least two different thicknesses along the extending direction of the bending axis L.
Further, in a specific implementation, in the organic light emitting display panel provided in the embodiment of the present invention, as shown in fig. 2, fig. 3 and fig. 4, a thickness of the organic insulating layer 4 includes a plurality of first thicknesses H1 and second thicknesses H2 that are alternately distributed, the first thickness H1 is greater than the second thickness H2, fig. 2 is a schematic cross-sectional structure of the organic light emitting display panel when the thickness of the organic insulating layer 4 is the first thickness H1, fig. 3 is a schematic cross-sectional structure of the organic light emitting display panel when the thickness of the organic insulating layer 4 is the second thickness H2, the first thickness H1 shown in fig. 4 indicates that the thickness of the organic insulating layer 4 under the wire 51 is the first thickness H1, and the second thickness H2 shown in fig. 4 indicates that the thickness of the wire 4 under the wire 51' is the second thickness H2;
at least one trace 51 and at least one trace 51' are correspondingly disposed on each organic insulating layer 4 with the first thickness H1 and each organic insulating layer 4 with the second thickness H2. Therefore, the routing lines 51 and the routing lines 51' in the extending direction of the bending axis L form an alternate high and low shape, and the propagation medium of the stress is in an alternate high and low shape, so that the stress can be more effectively released by the alternate high and low propagation medium, and the problem that the metal routing lines on the parts, close to the bending region CC, in the lead region BB and the binding region DD are broken is effectively avoided.
Further, in a specific implementation, in the organic light emitting display panel provided in the embodiment of the present invention, as shown in fig. 4, one trace 51 and one trace 51' are correspondingly disposed on each of the organic insulating layers 4 with the first thickness H1 and each of the organic insulating layers 4 with the second thickness H2. When bending is performed along the bending axis L, as shown in fig. 6, fig. 6 is a schematic diagram of a stress propagation path on the trace 51 and the trace 51' with various undulations along the extending direction of the bending axis L, it can be seen that when a stress propagates (indicated by an arrow), the stress alternately passes through the propagation medium with the first thickness H1 and the propagation medium with the second thickness H2, that is, the stress propagates in the propagation mediums with different thicknesses, and the stress is gradually weakened in the propagation process, that is, the alternating propagation mediums with various undulations can release the stress more effectively, and are not concentrated at the stress concentration position, so as to further effectively avoid the problem that the metal traces on the lead region BB and the portion of the bonding region DD close to the bending region CC are broken.
Further, in the organic light emitting display panel provided by the embodiment of the invention, as shown in fig. 2, the first thickness H1 is generally greater than or equal to 1 μm and less than or equal to 2 μm, and as shown in fig. 3, the second thickness H2 is generally greater than or equal to 0.5 μm and less than or equal to 1.5 μm, and at this time, the effect of releasing the stress is better.
Further, in practical implementation, in the organic light emitting display panel provided by the embodiment of the present invention, as shown in fig. 2, the first thickness is preferably 1.5 μm, and as shown in fig. 3, the second thickness is preferably 0.7 μm, where the effect of releasing the stress is the best.
Further, in practical implementation, since the portion near the bending region in the display region is a main stress concentration point, although the above-described embodiment that designs the organic insulating layer to have a rugged thickness can effectively release the stress, the stress cannot be completely released, and there is still a risk of wire breakage in the portion near the bending region in the display region, so in order to enable complete stress release, in the above-described organic light emitting display panel provided in the embodiment of the present invention, as shown in fig. 4, in the portion near the lead region BB in the bending region CC, the organic insulating layer 4 with the first thickness H1 further has grooves (first grooves 001) located at both sides of the corresponding trace 51. Since the first groove 001 is located closest to the display area AA, which is equivalent to further forming a more densely and alternately distributed rugged stress propagation medium layer along the arrangement direction of the first groove 001 (extending direction of the bending axis L), the stress can be completely released without risk of wire breakage.
Further, in practical implementation, since the portion near the bending region in the bonding region is a main stress concentration point, although the above-described embodiment that designs the organic insulating layer to have a rugged thickness can effectively release the stress, the stress cannot be completely released, and the portion near the bending region in the bonding region still has a risk of wire breakage, so in order to enable complete stress release, in the above-described organic light emitting display panel provided in the embodiment of the present invention, as shown in fig. 4, the portion near the bonding region DD in the bending region CC, the organic insulating layer 4 with the first thickness H1 further has grooves (second grooves 002) located at two sides of the corresponding trace 51. Since the second groove 002 is located closest to the bonding region DD, which is equivalent to further forming a dense and alternately distributed high and low wavy stress propagation medium layer along the arrangement direction (extending direction of the bending axis L) of the second groove 002, the stress can be further completely released, and the risk of wire breakage is completely avoided.
Further, in practical implementation, in the organic light emitting display panel provided by the embodiment of the invention, as shown in fig. 4, the depth of the groove (the first groove 001 and the second groove 002) may be a difference between the first thickness H1 and the second thickness H2, so that the manufacturing is convenient. Of course, in practical implementation, the depth of the groove (the first groove 001 and the second groove 002) may be other values as long as the undulated stress propagation stop can be formed.
Further, in practical implementation, in the organic light emitting display panel provided in the embodiment of the present invention, as shown in fig. 4, along the first direction X, the width of the groove (the first groove 001 and the second groove 002) may be greater than or equal to 2 μm and less than or equal to 4 μm; the width of the grooves (the first grooves 001 and the second grooves 002) may be 4 μm or more and 6 μm or less in the second direction Y.
Further, in practical implementation, in the above-described organic light emitting display panel provided by the embodiment of the present invention, as shown in fig. 4, along the first direction X, the width of the groove (the first groove 001 and the second groove 002) may be 3 μm; the width of the grooves (the first grooves 001 and the second grooves 002) may be 5 μm in the second direction Y.
Further, in practical implementation, in order to avoid a risk of wire breakage of the second metal layer during manufacturing, as shown in fig. 2 and fig. 3, in the organic light emitting display panel provided in the embodiment of the present invention, a surface of the inorganic insulating layer 3 facing the second metal layer 5 and a surface of the organic insulating layer 4 facing the second metal layer 5 are flush with each other.
Further, in a specific implementation, as shown in fig. 5, the organic light emitting display panel provided in the embodiment of the present invention further includes a protective layer (not shown) located on a side of the pixel defining layer 8 away from the substrate base plate 1, where the protective layer is made of a UV glue, and the protective layer is disposed to enable the traces 51 and 51 'in the bending region CC to be located at a neutral layer position during bending, so as to avoid a risk of wire breakage of the traces 51 and 51' during bending.
The embodiment of fig. 2 to 5 provided by the present invention only schematically illustrates the lead region BB, the bending region CC and the bonding region DD, and the organic insulating layer 4 of the bending region CC is designed as a film layer with alternating thickness along the extending direction of the bending axis L to release the stress generated during bending. Alternatively, as shown in fig. 7, a display area AA of the organic light emitting display panel provided by the embodiment of the present invention includes: the organic light emitting diode display device comprises a buffer layer 6, an active layer 41, a gate insulating layer 31, a gate electrode 42, a first interlayer insulating layer 32, a second interlayer insulating layer 33, a second metal layer 5 (a source drain electrode layer, the source drain electrode is electrically connected with the active layer 41), a planarization layer 7, an anode 20 (electrically connected with the drain electrode of the second metal layer 5), a pixel defining layer 8, an organic light emitting layer 21, a cathode 22 and an encapsulation layer 23, which are sequentially stacked on a substrate base plate 1, wherein the first metal layer 2 and the second metal layer 5 further comprise signal lines (grid lines, data lines and the like). The active layer 41, the gate electrode 42 and the source and drain electrodes located on the second metal layer 5 form a thin film transistor, an anode voltage is input to the anode 20 through the thin film transistor, a cathode voltage is input to the cathode 22, that is, under the driving of an external voltage, electrons injected from the cathode 22 and holes injected from the anode 20 are combined in the organic light emitting layer 21 to form electron-hole pairs or excitons at a bound energy level, and the excitons radiate and de-excite to emit photons, thereby generating visible light. The color of the OLED light emission depends on the type of organic molecules of the organic light emitting layer, and several organic thin films are arranged on the same OLED to form a color display. The brightness or intensity of the light depends on the properties of the light-emitting material and the magnitude of the applied current, the greater the current, the higher the brightness of the light for the same OLED.
In practical implementation, the organic light emitting display panel provided in the embodiments of the present invention further includes other functional film layers known to those skilled in the art, which are not listed here.
Based on the same inventive concept, the embodiment of the invention further provides a display device, which comprises the organic light emitting display panel provided by the embodiment of the invention. The implementation of the display device can be referred to the above embodiments of the organic light emitting display panel, and repeated descriptions are omitted.
In practical implementation, the display device provided in the embodiment of the present invention may be a mobile phone as shown in fig. 8. Of course, the display device provided in the embodiment of the present invention may also be any product or component having a display function, such as a tablet computer, a television, a display, a notebook computer, a digital photo frame, and a navigator. Other essential components of the display device are understood by those skilled in the art, and are not described herein or should not be construed as limiting the invention.
In the extending direction along the bending axis of the bending region, the organic insulating layer between the second metal layer and the substrate is set to have at least two different thicknesses, and the organic insulating layers with different thicknesses are all provided with the routing, namely the metal routing along the extending direction of the bending axis can form a high-low wavy shape, when the organic insulating layer is bent along the bending axis, the stress along the extending direction of the bending axis can be generated, the stress propagation medium is high-low wavy, the high-low wavy propagation medium can be used as a stress releasing path, namely the stress is propagated in the propagation media with different thicknesses, and the stress is gradually weakened in the propagation process, so that the stress generated in bending can be released by the organic insulating layers with different thicknesses, and the concentrated stress does not exist in the lead region and the part close to the bending region in the binding region, therefore, the problem that the metal wire on the lead area and the part of the binding area close to the bending area is broken is avoided.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (14)
1. An organic light-emitting display panel is characterized by comprising a display area, and a lead area, a bending area and a binding area which are sequentially and continuously arranged on one side of the display area, wherein the lead area is positioned between the display area and the bending area; the lead region and the binding region comprise a first metal layer and an inorganic insulating layer which are stacked on a substrate, and the bending region comprises an organic insulating layer and a second metal layer which are stacked on the substrate; the second metal layer is electrically connected with the first metal layer through a via hole penetrating through the inorganic insulating layer;
the second metal layer comprises a plurality of routing wires which extend along a first direction and are arranged along a second direction, the second direction is the extending direction of the bending shaft of the bending area, and the first direction is perpendicular to the second direction;
and in the second direction, the organic insulating layer has at least two different thicknesses, and the organic insulating layers with different thicknesses are provided with the routing lines.
2. The organic light emitting display panel according to claim 1, wherein the thickness of the organic insulating layer includes a plurality of first thicknesses and second thicknesses alternately distributed, the first thicknesses being greater than the second thicknesses;
and at least one wire is correspondingly arranged on each organic insulating layer with the first thickness and each organic insulating layer with the second thickness.
3. The organic light emitting display panel according to claim 2, wherein one of the traces is disposed on each of the organic insulating layers with the first thickness and each of the organic insulating layers with the second thickness.
4. The organic light-emitting display panel according to claim 2, wherein the first thickness is 1 μm or more and 2 μm or less, and the second thickness is 0.5 μm or more and 1.5 μm or less.
5. The organic light emitting display panel of claim 4, wherein the first thickness is 1.5 μm and the second thickness is 0.7 μm.
6. The organic light emitting display panel according to claim 3, wherein in a portion of the bending region near the lead region, the organic insulating layer of the first thickness further has grooves at two sides of the corresponding trace.
7. The organic light emitting display panel according to claim 3, wherein in a portion of the bending region near the bonding region, the organic insulating layer of the first thickness further has grooves at two sides of the corresponding trace.
8. The organic light emitting display panel according to claim 6 or 7, wherein a depth of the groove is a difference between the first thickness and the second thickness.
9. The organic light-emitting display panel according to claim 6 or 7, wherein a width of the groove is 2 μm or more and 4 μm or less in the first direction; the width of the groove is greater than or equal to 4 μm and less than or equal to 6 μm along the second direction.
10. The organic light emitting display panel according to claim 9, wherein a width of the groove is 3 μm in the first direction; the width of the groove along the second direction is 5 μm.
11. The organic light emitting display panel according to claim 1, wherein a surface of the inorganic insulating layer facing the second metal layer and a surface of the organic insulating layer facing the second metal layer are disposed flush.
12. The organic light emitting display panel of claim 1, wherein the lead region and the bonding region further comprise a buffer layer between the substrate base plate and the first metal layer, and the organic insulating layer of the bending region is in direct contact with the substrate base plate.
13. The organic light-emitting display panel according to claim 1, further comprising a planarization layer on a side of the second metal layer away from the substrate base plate, a pixel defining layer on a side of the planarization layer away from the substrate base plate, and a protective layer on a side of the pixel defining layer away from the substrate base plate.
14. A display device comprising the organic light-emitting display panel according to any one of claims 1 to 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911329636.XA CN111048566B (en) | 2019-12-20 | 2019-12-20 | Organic light-emitting display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911329636.XA CN111048566B (en) | 2019-12-20 | 2019-12-20 | Organic light-emitting display panel and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111048566A true CN111048566A (en) | 2020-04-21 |
| CN111048566B CN111048566B (en) | 2022-04-01 |
Family
ID=70238352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911329636.XA Active CN111048566B (en) | 2019-12-20 | 2019-12-20 | Organic light-emitting display panel and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111048566B (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111524941A (en) * | 2020-04-26 | 2020-08-11 | 武汉华星光电半导体显示技术有限公司 | Display panel |
| CN111613138A (en) * | 2020-05-19 | 2020-09-01 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
| CN111725249A (en) * | 2020-06-03 | 2020-09-29 | 錼创显示科技股份有限公司 | Flexible display panel with micro-assembly |
| CN112151556A (en) * | 2020-09-28 | 2020-12-29 | 合肥维信诺科技有限公司 | Display panel, display device and preparation method of display panel |
| CN112634759A (en) * | 2020-12-22 | 2021-04-09 | 昆山国显光电有限公司 | Display panel, display panel preparation method and display device |
| CN112652245A (en) * | 2020-12-22 | 2021-04-13 | 昆山国显光电有限公司 | Display panel and display device |
| CN113053971A (en) * | 2021-03-10 | 2021-06-29 | 武汉天马微电子有限公司 | Display module assembly and display device |
| CN113113457A (en) * | 2021-03-31 | 2021-07-13 | 武汉华星光电半导体显示技术有限公司 | Display panel |
| CN113223410A (en) * | 2021-04-27 | 2021-08-06 | 武汉华星光电半导体显示技术有限公司 | Display panel and electronic device |
| CN113470522A (en) * | 2021-06-24 | 2021-10-01 | 武汉华星光电技术有限公司 | Display module and mobile terminal |
| CN113823194A (en) * | 2021-10-29 | 2021-12-21 | 京东方科技集团股份有限公司 | Display module and display device |
| WO2022041022A1 (en) * | 2020-08-27 | 2022-03-03 | 京东方科技集团股份有限公司 | Display substrate and display device |
| CN114171567A (en) * | 2021-12-07 | 2022-03-11 | 深圳市华星光电半导体显示技术有限公司 | OLED display panel and electronic equipment |
| WO2022052715A1 (en) * | 2020-09-08 | 2022-03-17 | 京东方科技集团股份有限公司 | Touch structure, touch display substrate, and touch display device |
| US20220309963A1 (en) * | 2020-08-06 | 2022-09-29 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd | Flexible display panel and rollable display device |
| WO2023103030A1 (en) * | 2021-12-09 | 2023-06-15 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
| US12080686B2 (en) | 2020-06-03 | 2024-09-03 | PlayNitride Display Co., Ltd. | Flexible micro device display panel |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086236A (en) * | 2016-02-12 | 2017-08-22 | 三星显示有限公司 | Display device |
| CN107424520A (en) * | 2017-07-26 | 2017-12-01 | 京东方科技集团股份有限公司 | Substrate and preparation method thereof, display panel, display device |
| US20180138431A1 (en) * | 2016-11-11 | 2018-05-17 | Japan Display Inc. | Display device |
| CN108336099A (en) * | 2018-03-28 | 2018-07-27 | 京东方科技集团股份有限公司 | Display base plate and preparation method thereof, display device |
| US20190129227A1 (en) * | 2017-10-26 | 2019-05-02 | Japan Display Inc. | Display device |
| JP2019102299A (en) * | 2017-12-04 | 2019-06-24 | 凸版印刷株式会社 | Organic el element, organic el lighting device, organic el element light source and organic el display device |
-
2019
- 2019-12-20 CN CN201911329636.XA patent/CN111048566B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086236A (en) * | 2016-02-12 | 2017-08-22 | 三星显示有限公司 | Display device |
| US20180138431A1 (en) * | 2016-11-11 | 2018-05-17 | Japan Display Inc. | Display device |
| CN107424520A (en) * | 2017-07-26 | 2017-12-01 | 京东方科技集团股份有限公司 | Substrate and preparation method thereof, display panel, display device |
| US20190129227A1 (en) * | 2017-10-26 | 2019-05-02 | Japan Display Inc. | Display device |
| JP2019102299A (en) * | 2017-12-04 | 2019-06-24 | 凸版印刷株式会社 | Organic el element, organic el lighting device, organic el element light source and organic el display device |
| CN108336099A (en) * | 2018-03-28 | 2018-07-27 | 京东方科技集团股份有限公司 | Display base plate and preparation method thereof, display device |
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111524941A (en) * | 2020-04-26 | 2020-08-11 | 武汉华星光电半导体显示技术有限公司 | Display panel |
| CN111613138A (en) * | 2020-05-19 | 2020-09-01 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
| CN111725249A (en) * | 2020-06-03 | 2020-09-29 | 錼创显示科技股份有限公司 | Flexible display panel with micro-assembly |
| CN111725249B (en) * | 2020-06-03 | 2024-02-13 | 錼创显示科技股份有限公司 | Flexible micro-assembly display panel |
| US12080686B2 (en) | 2020-06-03 | 2024-09-03 | PlayNitride Display Co., Ltd. | Flexible micro device display panel |
| US11670198B2 (en) * | 2020-08-06 | 2023-06-06 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd | Flexible display panel and rollable display device |
| US20220309963A1 (en) * | 2020-08-06 | 2022-09-29 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd | Flexible display panel and rollable display device |
| WO2022041022A1 (en) * | 2020-08-27 | 2022-03-03 | 京东方科技集团股份有限公司 | Display substrate and display device |
| US11921963B2 (en) | 2020-09-08 | 2024-03-05 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Touch structure, touch display structure, and touch display device |
| WO2022052715A1 (en) * | 2020-09-08 | 2022-03-17 | 京东方科技集团股份有限公司 | Touch structure, touch display substrate, and touch display device |
| CN112151556A (en) * | 2020-09-28 | 2020-12-29 | 合肥维信诺科技有限公司 | Display panel, display device and preparation method of display panel |
| CN112151556B (en) * | 2020-09-28 | 2024-03-15 | 合肥维信诺科技有限公司 | Display panel, display device and preparation method of display panel |
| CN112652245A (en) * | 2020-12-22 | 2021-04-13 | 昆山国显光电有限公司 | Display panel and display device |
| CN112634759A (en) * | 2020-12-22 | 2021-04-09 | 昆山国显光电有限公司 | Display panel, display panel preparation method and display device |
| CN113053971A (en) * | 2021-03-10 | 2021-06-29 | 武汉天马微电子有限公司 | Display module assembly and display device |
| CN113113457B (en) * | 2021-03-31 | 2022-09-27 | 武汉华星光电半导体显示技术有限公司 | Display panel |
| CN113113457A (en) * | 2021-03-31 | 2021-07-13 | 武汉华星光电半导体显示技术有限公司 | Display panel |
| CN113223410A (en) * | 2021-04-27 | 2021-08-06 | 武汉华星光电半导体显示技术有限公司 | Display panel and electronic device |
| CN113470522B (en) * | 2021-06-24 | 2022-04-26 | 武汉华星光电技术有限公司 | Display module and mobile terminal |
| US12010803B2 (en) | 2021-06-24 | 2024-06-11 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Display module and mobile terminal |
| CN113470522A (en) * | 2021-06-24 | 2021-10-01 | 武汉华星光电技术有限公司 | Display module and mobile terminal |
| CN113823194A (en) * | 2021-10-29 | 2021-12-21 | 京东方科技集团股份有限公司 | Display module and display device |
| CN114171567A (en) * | 2021-12-07 | 2022-03-11 | 深圳市华星光电半导体显示技术有限公司 | OLED display panel and electronic equipment |
| WO2023103030A1 (en) * | 2021-12-09 | 2023-06-15 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111048566B (en) | 2022-04-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111048566B (en) | Organic light-emitting display panel and display device | |
| KR102124906B1 (en) | Organic electro luminescent device having touch screen and method of fabricationg the same | |
| CN113424323B (en) | Display substrate, display panel and splicing screen | |
| CN111009562B (en) | Stretchable display panel and device and manufacturing method of stretchable display device | |
| KR102295584B1 (en) | In-cell type touch panel integrated organic light emitting display apparatus | |
| CN104701352B (en) | A kind of array base palte, display panel and display device | |
| KR101960387B1 (en) | Flexible display device and manufacturing method of the same | |
| US11222939B2 (en) | Display panel, display device and method for manufacturing display panel | |
| CN105745607A (en) | Display apparatus using semiconductor light emitting device | |
| JP2014119705A (en) | Moisture-proof structure and display device | |
| CN110165071B (en) | Organic light-emitting display panel and organic light-emitting display device | |
| WO2018176742A1 (en) | Display panel, display device, and method for manufacturing display panel | |
| CN109599421B (en) | OLED display device and manufacturing method thereof | |
| KR20200099037A (en) | Display device using semiconductor light emitting diode and manufacturing method thereof | |
| KR20210111926A (en) | Display device | |
| CN112736096A (en) | Preparation method of display substrate, display substrate and display device | |
| CN109872637B (en) | Display panel, manufacturing method thereof and display device | |
| US7777219B2 (en) | Dual panel type organic electroluminescent display device | |
| JP6076270B2 (en) | Display device and panel unit | |
| JP2017173508A (en) | Display device | |
| CN113517262A (en) | Display panel, manufacturing method thereof and display device | |
| US11903298B2 (en) | Display panel and display device | |
| CN113826449B (en) | Display module and display device | |
| KR102150839B1 (en) | Display device | |
| KR100743940B1 (en) | Organic light emitting diode panel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |