CN112071211B - Flexible display panel, preparation method thereof and display device - Google Patents
Flexible display panel, preparation method thereof and display device Download PDFInfo
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- CN112071211B CN112071211B CN202010995152.5A CN202010995152A CN112071211B CN 112071211 B CN112071211 B CN 112071211B CN 202010995152 A CN202010995152 A CN 202010995152A CN 112071211 B CN112071211 B CN 112071211B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
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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
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention relates to the technical field of display, and discloses a flexible display panel, a preparation method thereof and a display device, wherein the flexible display panel comprises: a flexible display panel, comprising: a substrate divided into an effective display area and a peripheral wiring area around the effective display area; the plurality of conductive wires are positioned in the peripheral wiring area and comprise connecting sections positioned in the peripheral wiring area and used for connecting one side of the driving chip; a protective layer positioned on the connecting section and covering the connecting section; and an encapsulation layer covering the effective display area and the peripheral wiring area of the substrate. In the flexible display panel, the protective layer is arranged on the connecting section of the conductive wiring in the peripheral wiring area for protection, so that damage during preparation of a subsequent film layer is avoided, organic film residue can be effectively avoided, organic matters are prevented from penetrating into an effective display area, the packaging effect of the packaging layer can be improved, and failure is avoided, so that the problem that black spots appear in the effective display area of a display product is effectively improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a flexible display panel, a preparation method thereof and a display device.
Background
At present, the flexible organic light emitting diode as the front-edge technology gradually shows the advantages of the flexible organic light emitting diode in the display industry, along with the market demand, the organic light emitting diode technology is more and more accepted, meanwhile, the requirements of customers on products are also more and more high, and the reliability condition is more and more harsh, but the display effect of the organic light emitting diode display product is seriously affected by the fact that black spots, namely GDSX phenomena, are easy to appear in the display area due to the packaging problem, so that research on how to solve the GDSX problem of the organic light emitting diode display product is needed.
Disclosure of Invention
The invention discloses a flexible display panel, a preparation method thereof and a display device, wherein a protective layer is arranged on a connecting section of a conductive wiring in a peripheral wiring area for protection, so that damage during subsequent film preparation is avoided, organic film residue can be effectively avoided, organic matters are prevented from penetrating into an effective display area, the packaging effect of a packaging layer can be improved, and failure is avoided, thereby effectively improving the problem that black spots appear in the effective display area of a display product.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a flexible display panel, comprising:
a substrate divided into an effective display area and a peripheral wiring area around the effective display area;
a plurality of conductive traces located in the peripheral routing region, the conductive traces including a connection section located in the peripheral routing region for connecting one side of a driver chip;
a protective layer located on the connection section and covering the connection section;
and the packaging layer covers the effective display area and the peripheral wiring area of the substrate.
In the flexible display panel, the substrate is divided into the effective display area and the peripheral wiring area, the peripheral wiring area surrounds the effective display area and is positioned at the periphery side of the effective display area, a plurality of conductive wires are arranged in the peripheral wiring area, each conductive wire comprises a connecting section, each connecting section of each conductive wire is positioned at a part for connecting a driving chip in the peripheral wiring area, a protective layer is arranged on each connecting section and covers each connecting section, the connecting sections are protected, when etching preparation is carried out on part of film layers in the organic electroluminescent device layer in the effective display area, the edges of the connecting sections of the conductive wires are not damaged, pits are not formed at the edges, organic matter residues are not caused during subsequent organic film preparation, the organic matter is prevented from penetrating into the effective display area to cause foreign matter black spots, the packaging effect of the packaging layer is effectively improved, packaging failure is avoided, and the problem that black spots appear in the effective display area of formed display products is effectively improved.
Therefore, in the flexible display panel, the protective layer is arranged on the connecting section of the conductive wiring in the peripheral wiring area for protection, so that damage during preparation of a subsequent film layer is avoided, organic film residue can be effectively avoided, organic matters are prevented from penetrating into the effective display area, the packaging effect of the packaging layer can be improved, and failure is avoided, thereby effectively improving the problem that black spots appear in the effective display area of a display product.
Optionally, the flexible display panel further comprises an organic electroluminescent device layer located within the active display area;
the protective layer and the anode in the organic electroluminescent device layer are formed by the same layer.
Optionally, the protective layer comprises a laminated structure film layer of ITO/Ag/ITO.
Optionally, the plurality of conductive traces includes a plurality of power lines and a plurality of signal lines.
Optionally, the flexible display panel further includes a driving chip disposed at one side of the effective display area and electrically connected to the connection section of the conductive trace.
The invention also provides a display device which comprises any flexible display panel provided by the technical scheme.
The invention also provides a preparation method of any flexible display panel provided by the technical scheme, which comprises the following steps:
forming a conductive layer on a substrate, and performing patterning treatment on the conductive layer, wherein the pattern in the patterned conductive layer comprises a plurality of conductive wires positioned in a peripheral wiring area of the substrate, and the conductive wires comprise connecting sections positioned in the peripheral wiring area and used for connecting one side of a driving chip;
forming a protective layer on the connecting section, wherein the protective layer covers the connecting section;
and forming an encapsulation layer covering the effective display area and the peripheral wiring area of the substrate base plate on the connection section.
Optionally, the forming a protective layer on the connection section specifically includes:
forming an organic electroluminescent device layer in an effective display area of the substrate, wherein the anode formation in the organic electroluminescent device layer specifically comprises: and forming a transparent conductive layer on the conductive layer and patterning the transparent conductive layer, wherein the pattern in the patterned transparent conductive layer comprises the anode positioned in the effective display area and the protective layer positioned on the connecting section.
Drawings
Fig. 1 is a schematic view of a flexible display panel according to an embodiment of the present invention;
FIG. 2 is a schematic view of a partial structure of the area indicated by C in FIG. 1;
fig. 3 is a schematic cross-sectional view taken along the direction D-D in fig. 2.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, 2 and 3, an embodiment of the present invention provides a flexible display panel including: a substrate 1, the substrate 1 being divided into an effective display area a and a peripheral wiring area B located around the effective display area a; a plurality of conductive traces 2 located in the peripheral wiring region B, and the conductive traces 2 include a connection section 21 located in the peripheral wiring region B for connecting one side of the driving chip 5; a protective layer 3 on the connection section 21 and covering the connection section; and an encapsulation layer 4 covering the effective display area and the peripheral wiring area of the substrate base.
In the flexible display panel, the substrate is divided into the effective display area and the peripheral wiring area, the peripheral wiring area surrounds the effective display area and is positioned at the periphery side of the effective display area, a plurality of conductive wires are arranged in the peripheral wiring area, each conductive wire comprises a connecting section, each connecting section of each conductive wire is positioned at a part for connecting a driving chip in the peripheral wiring area, a protective layer is arranged on each connecting section and covers each connecting section, the connecting sections are protected, when etching preparation is carried out on part of film layers in the organic electroluminescent device layer in the effective display area, the edges of the connecting sections of the conductive wires are not damaged, pits are not formed at the edges, organic matter residues are not caused during subsequent organic film preparation, the organic matter is prevented from penetrating into the effective display area to cause foreign matter black spots, the packaging effect of the packaging layer is effectively improved, packaging failure is avoided, and the problem that black spots appear in the effective display area of formed display products is effectively improved.
Therefore, in the flexible display panel, the protective layer is arranged on the connecting section of the conductive wiring in the peripheral wiring area for protection, so that damage during preparation of a subsequent film layer is avoided, organic film residue can be effectively avoided, organic matters are prevented from penetrating into the effective display area, the packaging effect of the packaging layer can be improved, and failure is avoided, thereby effectively improving the problem that black spots appear in the effective display area of a display product.
Specifically, in the flexible display panel, the flexible display panel further includes an organic electroluminescent device layer located in the effective display area; the protective layer and the anode in the organic electroluminescent device layer are prepared and formed in the same layer. The protective layer can be prepared on the same layer as the anode in the organic electroluminescent device layer, namely, when the anode layer is patterned, part of patterns are reserved on the connecting section of the conductive wire in the peripheral wiring area to form the protective layer, so that the connecting section of the conductive wire can be effectively protected, an additional Mask is not added, and the preparation process is saved.
Specifically, the protective layer is set to be a laminated structure film of ITO/Ag/ITO, and the material of the anode is also a laminated structure film of ITO/Ag/ITO, and it should be noted that the protective layer may be a single-layer ITO layer, or a film of another material, which is not limited in this embodiment.
Specifically, as shown in fig. 2 with reference to fig. 1, in the above flexible display panel, the plurality of conductive traces 2 include a plurality of power lines and a plurality of signal lines, the power lines may be divided into a first power line VDD and a second power line VSS, the first power line may be used to connect a high potential, provide a high potential signal, and the second power line may be used to connect a common electrode, or be grounded.
Specifically, in the flexible display panel, the flexible display panel further includes a driving chip disposed at one side of the effective display area and electrically connected to the connection section of the conductive trace, and the driving chip may be used for controlling the input of an electrical signal to the display unit of the effective display area.
Based on the same inventive concept, the invention also provides a display device, comprising any flexible display panel provided by the technical scheme.
The invention also provides a preparation method of any flexible display panel provided by the technical scheme, which comprises the following steps:
step S101, forming a conductive layer on a substrate, and patterning the conductive layer, wherein the pattern in the patterned conductive layer comprises a plurality of conductive wires positioned in a peripheral wiring area of the substrate, and the conductive wires comprise connecting sections positioned in the peripheral wiring area and used for connecting one side of a driving chip;
step S102, forming a protective layer on the connecting section, wherein the protective layer covers the connecting section;
step S103, forming an encapsulation layer covering the effective display area and the peripheral wiring area of the substrate base plate on the connection section.
Specifically, in step S102, the specific preparation of forming the protective layer on the connection section includes:
forming an organic electroluminescent device layer in an effective display area of a substrate, wherein the anode in the organic electroluminescent device layer specifically comprises: and forming a transparent conductive layer on the conductive layer and patterning the transparent conductive layer, wherein the pattern in the patterned transparent conductive layer comprises an anode positioned in the effective display area and a protective layer positioned on the connecting section.
It will be apparent to those skilled in the art that various modifications and variations can be made to the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (5)
1. A flexible display panel, comprising:
a substrate divided into an effective display area and a peripheral wiring area around the effective display area;
a plurality of conductive traces located in the peripheral wiring region, each of the conductive traces including a connection section located in the peripheral wiring region for connecting one side of a driving chip; the conductive wirings include a first power line VDD and a second power line VSS;
a protective layer which is positioned on the connecting section and covers the side edge of the connecting section, wherein the protective layer comprises an ITO/Ag/ITO laminated structure film layer;
a package layer covering the effective display area and the peripheral wiring area of the substrate base plate;
and the protective layer and the anode in the organic electroluminescent device layer are formed in the same layer.
2. The flexible display panel of claim 1, wherein the plurality of conductive traces comprises a plurality of signal lines.
3. The flexible display panel of claim 1, further comprising a driver chip disposed on a side of the active display area and electrically connected to the connection section of the conductive trace.
4. A display device comprising the flexible display panel according to any one of claims 1-3.
5. A method of manufacturing a flexible display panel according to any one of claims 1 to 3, comprising:
forming a conductive layer on a substrate, and performing patterning treatment on the conductive layer, wherein the pattern in the patterned conductive layer comprises a plurality of conductive wires positioned in a peripheral wiring area of the substrate, and each conductive wire comprises a connecting section positioned in the peripheral wiring area and used for connecting one side of a driving chip; the conductive wirings include a first power line VDD and a second power line VSS;
forming an organic electroluminescent device layer in an effective display area of the substrate, wherein the anode formation in the organic electroluminescent device layer specifically comprises: forming a transparent conductive layer on the conductive layer and patterning the transparent conductive layer, wherein the pattern in the patterned transparent conductive layer comprises the anode positioned in the effective display area and the protective layer covering the side edges of the connecting section; the protective layer comprises an ITO/Ag/ITO laminated structure film layer;
and forming an encapsulation layer covering the effective display area and the peripheral wiring area of the substrate base plate on the connection section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010995152.5A CN112071211B (en) | 2020-09-21 | 2020-09-21 | Flexible display panel, preparation method thereof and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010995152.5A CN112071211B (en) | 2020-09-21 | 2020-09-21 | Flexible display panel, preparation method thereof and display device |
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| CN112071211A CN112071211A (en) | 2020-12-11 |
| CN112071211B true CN112071211B (en) | 2023-09-26 |
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