WO2025001610A1 - 显示面板及其制备方法、显示装置 - Google Patents
显示面板及其制备方法、显示装置 Download PDFInfo
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- WO2025001610A1 WO2025001610A1 PCT/CN2024/093654 CN2024093654W WO2025001610A1 WO 2025001610 A1 WO2025001610 A1 WO 2025001610A1 CN 2024093654 W CN2024093654 W CN 2024093654W WO 2025001610 A1 WO2025001610 A1 WO 2025001610A1
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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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- 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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- 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
- H10K59/1201—Manufacture or treatment
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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
- H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
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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
- H10K59/124—Insulating layers formed between TFT elements and OLED elements
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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
- H10K59/126—Shielding, e.g. light-blocking means over the TFTs
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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
- H10K59/1315—Interconnections, e.g. wiring lines or terminals comprising structures specially adapted for lowering the resistance
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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
- H10K59/80—Constructional details
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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
- H10K59/80—Constructional details
- H10K59/87—Passivation; Containers; Encapsulations
- H10K59/873—Encapsulations
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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
- H10K59/80—Constructional details
- H10K59/87—Passivation; Containers; Encapsulations
- H10K59/873—Encapsulations
- H10K59/8731—Encapsulations multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/60—Forming conductive regions or layers, e.g. electrodes
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/621—Providing a shape to conductive layers, e.g. patterning or selective deposition
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2102/00—Constructional details relating to the organic devices covered by this subclass
- H10K2102/301—Details of OLEDs
- H10K2102/351—Thickness
Definitions
- the present application relates to the field of display technology, and in particular to a display panel and a method for preparing the same, and a display device.
- OLED display panels have become the mainstream development direction in the field of display technology due to their advantages such as self-luminescence, high brightness, good image quality and low energy consumption.
- the present application provides a display panel and a method for manufacturing the same, and a display device, and the technical solution is as follows:
- a display panel comprising:
- a base substrate having a display area and a peripheral area surrounding the display area;
- a plurality of pixel units wherein the plurality of pixel units are located in the display area;
- a blocking structure the blocking structure surrounding the display area
- At least one power supply line is located on one side of the substrate, each of the power supply lines is used to receive a power supply signal and is connected to the plurality of pixel units;
- the first organic film layer is located on a side of the power line away from the base substrate, and the first organic film layer has at least one through-groove area, an orthographic projection of the through-groove area on the base substrate and an orthographic projection of the blocking structure on the base substrate are arranged adjacent to each other, and the through-groove area is used to expose a first target area of the power line;
- the power supply wiring at least comprises a first wiring layer, wherein the first wiring layer comprises a first material layer, a second material layer and a third material layer sequentially stacked in a direction away from the substrate.
- the orthographic projection of the third material layer of the first routing layer located in the first target area on the base substrate is located within the orthographic projection of the second material layer on the base substrate, and the orthographic projection of the second material layer of the first routing layer located in the first target area on the base substrate is located within the orthographic projection of the first material layer on the base substrate.
- the first material layer of the first routing layer located in the first target area has a first boundary extending along a first direction
- the second material layer of the first routing layer located in the first target area has a second boundary extending along the first direction
- the third material layer of the first routing layer located in the first target area has a third boundary extending along the first direction
- the distance between the first boundary and the third boundary in the second direction is greater than 3 micrometers, the second boundary is located between the first boundary and the third boundary, and the second direction is perpendicular to the first direction.
- the first organic film layer has a groove area, the thickness of the first organic film layer in the groove area is less than the thickness of other areas except the groove area, and the groove area is used to cover the second target area of the first wiring layer;
- the second target area and the first target area are adjacent to each other in the first direction.
- the groove area has a first groove boundary close to the first wiring layer and extending along a first direction, and the third material layer of the first wiring layer located in the first target area has a third boundary extending along the first direction;
- the orthographic projection of the first groove boundary on the substrate is collinear with the orthographic projection of the third boundary on the substrate.
- the groove region further has a second groove boundary away from the through groove region and extending along a second direction, and a third groove boundary adjacent to the through groove region and extending along the second direction; wherein the second direction is perpendicular to the first direction;
- a distance between the second groove boundary and the third groove boundary in the first direction is greater than 3 micrometers.
- the power routing includes a third routing layer, a second routing layer and the first routing layer stacked in sequence in a direction away from the base substrate;
- the display panel includes: a third organic film layer located between the third routing layer and the second routing layer, and a second organic film layer located between the second routing layer and the first routing layer, and the first organic film layer is located on a side of the first routing layer away from the base substrate;
- the third routing layer and the second routing layer are connected through openings in the third organic film layer, and the second routing layer and the first routing layer are connected through openings in the second organic film layer; the through groove area is used to expose the first target area of the first routing layer.
- the power wiring includes a second wiring layer and the first wiring layer stacked in sequence in a direction away from the base substrate;
- the display panel includes: a second organic film layer located between the second wiring layer and the first wiring layer, and the first organic film layer is located on a side of the first wiring layer away from the base substrate;
- the second wiring layer and the first wiring layer are connected via an opening in the second organic film layer; and the through groove area is used to expose a first target area of the first wiring layer.
- the at least one power supply line includes a first signal power supply line and a second signal power supply line spaced apart above the second direction
- the through-slot area includes a first sub-through-slot area for exposing the first signal power supply line and a second sub-through-slot area for exposing the second signal power supply line;
- the length of the first sub-through-groove region along the first direction is less than or equal to the length of the second sub-through-groove region along the first direction.
- the thickness of a portion of the second material layer located in the first target area is less than or equal to the thickness of a portion of the second material layer located in the other areas.
- the portion of the second material layer located in the first target area is less than the thickness of the portion of the second material layer located in the other areas, the portion of the second material layer located in the first target area is uneven away from the surface of the base substrate.
- the blocking structure comprises: a first blocking dam, a second blocking dam and a third blocking dam which are sequentially arranged away from the display area;
- the first organic film layer has two through-groove regions, one of which is located on a side of the third blocking dam away from the display region, and the other through-groove region is located between the second blocking dam and the third blocking dam.
- each barrier dam in the barrier structure includes at least one layer of the organic film layers in the display panel, and the organic film layers in the display panel include: a third organic film layer, a second organic film layer and the first organic film layer;
- one of the first organic film layer, the second organic film layer and the third organic film layer is located adjacent to any blocking dam in the blocking structure and the through groove area is not provided. The area of the domain.
- the sides of the third material layer, the second material layer and the first material layer are flat sides, and the flat sides are inclined relative to the supporting surface of the base substrate;
- the orthographic projection of the third material layer on the base substrate is located within the orthographic projection of the second material layer on the base substrate, and the orthographic projection of the second material layer on the base substrate is located within the orthographic projection of the first material layer on the base substrate.
- a method for preparing a display panel comprising:
- the base substrate having a display area and a peripheral area surrounding the display area;
- a plurality of pixel units, a blocking structure and at least one initial power supply line are formed on one side of the base substrate, the plurality of pixel units are located in the display area, the blocking structure surrounds the display area, each of the initial power supply lines is used to receive a power supply signal and is connected to the plurality of pixel units;
- the initial power supply line comprises at least a first initial wiring layer, the first initial wiring layer comprises a first material layer, a second material layer and a third material layer stacked in sequence in a direction away from the base substrate;
- An initial organic film layer is formed on a side of the initial power supply line away from the base substrate, the initial organic film layer has at least one through-groove area, the orthographic projection of the through-groove area on the base substrate and the orthographic projection of the blocking structure on the base substrate are arranged adjacent to each other, and the through-groove area is used to expose a first target area of the initial power supply line;
- An etching process is adopted to etch the third material layer of the first target area of the first initial routing layer of the at least one initial power routing and to etch the initial organic film layer to obtain a first routing layer and a first organic film layer of the at least one power routing, wherein the orthographic projection of the third material layer of the first routing layer located in the first target area on the base substrate is within the orthographic projection of the second material layer on the base substrate, and the orthographic projection of the second material layer of the power routing located in the first target area on the base substrate is within the orthographic projection of the first material layer on the base substrate.
- forming the plurality of pixel units comprises: sequentially forming an anode layer, a pixel defining layer, a light emitting layer and a cathode layer on a side of the initial organic film layer away from the base substrate;
- the etching process is used to etch the third material layer of the first initial wiring layer of the at least one initial power wiring located in the first target area and the initial organic film layer, including:
- the etching process is used The third material layer of the first initial wiring layer of the at least one initial power wiring located in the first target area is etched by a process and the initial organic film layer is etched.
- the first initial wiring layer is located in the first target region so that a first boundary of the first material layer, a second boundary of the second material layer and a third boundary of the third material layer are collinear;
- the orthographic projection of the second material layer of the first initial routing layer located in the first target area on the base substrate is located within the orthographic projection of the third material layer on the base substrate, and the first boundary of the first material layer of the first initial routing layer located in the first target area and the third boundary of the third material layer are collinear;
- the first boundary, the second boundary and the third boundary all extend along a first direction.
- forming the plurality of pixel units includes: sequentially forming an anode layer, a pixel defining layer, a light emitting layer and a cathode layer on a side of the first organic film layer away from the base substrate;
- the etching process is used to etch the third material layer of the first initial wiring layer of the at least one initial power wiring located in the first target area and the initial organic film layer, including:
- the etching process is used to etch the third material layer of the first initial wiring layer of the at least one initial power wiring located in the first target area and to etch the initial organic film layer.
- an orthographic projection of a second material layer of a first initial routing layer located in the first target area on the base substrate is located within an orthographic projection of a third material layer on the base substrate, and a first boundary of a first material layer of the first initial routing layer located in the first target area and a third boundary of the third material layer are collinear;
- part of the material of the pixel definition layer is located in a retracted area, and the retracted area is an area where the first initial wiring layer has the first material layer and the third material layer, and does not have the second material layer;
- the etching of the third material layer of the first initial wiring layer of the at least one initial power wiring located in the first target area and the etching of the initial organic film layer by using an etching process includes:
- the mask has a plurality of mask openings, and an orthographic projection of each mask opening on the substrate partially overlaps with the through-slot region and partially overlaps with the first target region of the initial power routing;
- the mask opening has a first mask boundary extending along a first direction, the first mask boundary is used to form a third boundary of the third material layer after etching, and the orthographic projection of the first mask boundary on the substrate is located within the orthographic projection of the first material layer on the substrate, the distance between the first mask boundary and the third boundary in the second direction is greater than 3 microns, and the second direction is perpendicular to the first direction.
- the first mask boundary is also used to form a first groove boundary of a groove region of the first organic film layer after etching, and the first groove boundary is close to the power line and extends along the first direction;
- the thickness of the first organic film layer in the groove area is less than the thickness of other areas except the groove area.
- the groove area is used to cover the second target area of the power line. The second target area and the first target area are adjacent to each other in the first direction.
- the mask opening further has a second mask boundary extending along the second direction, the through-groove region is located on one side of the second mask boundary, and the second mask boundary is used to form a second groove boundary of a groove region of the first organic film layer away from the through-groove region and extending along the second direction; the groove region further has a third groove boundary adjacent to the through-groove region and extending along the second direction;
- the distance between the second groove boundary and the third groove boundary in the first direction is greater than 3 micrometers.
- forming the power wiring includes: forming a first wiring layer on one side of the substrate;
- forming the power supply wiring includes: sequentially forming a second wiring layer, a second organic film layer and a first wiring layer on one side of the base substrate, wherein the first wiring layer and the second wiring layer are connected by the The opening in the second organic film layer is connected;
- forming the power wiring includes: sequentially forming a third wiring layer, a third organic film layer, a second wiring layer, a second organic film layer and a first wiring layer on one side of the base substrate, the first wiring layer and the second wiring layer are connected through an opening in the second organic film layer, and the second wiring layer and the third wiring layer are connected through an opening in the third organic film layer;
- the through-groove area is used to expose a first target area of the first wiring layer.
- a display device comprising a power supply component and the display panel as described in the above aspect;
- the power supply component is used to supply power to the display panel.
- FIG1 is a schematic diagram of the structure of a display panel provided in an embodiment of the present application.
- FIG2 is a partial schematic diagram of the display panel shown in FIG1 ;
- FIG3 is a schematic diagram of a substrate provided in an embodiment of the present application.
- FIG4 is a schematic diagram of a stacking of power supply lines provided in an embodiment of the present application.
- FIG5 is a schematic diagram of a power line with side carving provided by an embodiment of the present application.
- FIG6 is a schematic diagram of a power supply routing provided in an embodiment of the present application.
- FIG7 is a partial schematic diagram of FIG2
- FIG8 is a cross-sectional view of FIG7 along the AA direction
- FIG9 is a cross-sectional view of FIG7 along the BB direction
- FIG10 is a cross-sectional view taken along the CC direction of FIG7;
- FIG11 is a cross-sectional view of FIG7 along the DD direction
- FIG12 is a cross-sectional view of FIG7 along the EE direction
- FIG13 is a flow chart of a method for preparing a display panel provided in an embodiment of the present application.
- FIG. 14 is a flow chart of another method for preparing a display panel provided in an embodiment of the present application.
- FIG15 is a schematic diagram of a process for etching a third material layer provided in an embodiment of the present application.
- FIG. 16 is a flow chart of another method for preparing a display panel provided in an embodiment of the present application.
- FIG17 is a schematic diagram of forming an active thin film according to an embodiment of the present application.
- FIG18 is a schematic diagram of a patterning process for an active thin film provided in an embodiment of the present application.
- FIG19 is a schematic diagram of forming a first insulating layer provided in an embodiment of the present application.
- FIG20 is a schematic diagram of forming a first gate film according to an embodiment of the present application.
- FIG21 is a schematic diagram of patterning a first gate film according to an embodiment of the present application.
- FIG22 is a schematic diagram of forming a second insulating layer provided in an embodiment of the present application.
- FIG23 is a schematic diagram of forming a second gate film according to an embodiment of the present application.
- FIG24 is a schematic diagram of patterning a second gate film according to an embodiment of the present application.
- FIG25 is a schematic diagram of forming an interlayer dielectric layer provided by an embodiment of the present application.
- FIG26 is a schematic diagram of forming a first source-drain film provided in an embodiment of the present application.
- FIG. 27 is a schematic diagram of coating a photoresist on a side of a first source/drain film away from a substrate provided by an embodiment of the present application;
- FIG28 is a schematic diagram of exposing and developing a photoresist provided in an embodiment of the present application.
- FIG29 is a schematic diagram of etching a first source/drain film provided in an embodiment of the present application.
- FIG30 is a schematic diagram of removing photoresist provided in an embodiment of the present application.
- FIG31 is a schematic diagram of forming a first flat film provided by an embodiment of the present application.
- FIG32 is a schematic diagram of patterning a first flat film according to an embodiment of the present application.
- FIG33 is a schematic diagram of forming an anode film provided in an embodiment of the present application.
- FIG34 is a schematic diagram of a patterning process for an anode film provided in an embodiment of the present application.
- FIG35 is a schematic diagram of forming a pixel defining film according to an embodiment of the present application.
- FIG36 is a schematic diagram of a method of patterning a pixel defining film according to an embodiment of the present application.
- FIG37 is a schematic diagram of coating a photoresist after the anode layer is prepared, provided in an embodiment of the present application.
- FIG38 is a schematic diagram of exposure and development of a photoresist provided in an embodiment of the present application.
- FIG39 is a schematic diagram of etching a third material layer provided in an embodiment of the present application.
- FIG40 is a schematic diagram of removing photoresist provided in an embodiment of the present application.
- FIG41 is a schematic diagram of coating a photoresist after a pixel definition layer is prepared, provided in an embodiment of the present application;
- FIG42 is a schematic diagram of exposure and development of a photoresist provided in an embodiment of the present application.
- FIG43 is a schematic diagram of etching a third material layer provided in an embodiment of the present application.
- FIG44 is a schematic diagram of removing photoresist provided in an embodiment of the present application.
- FIG45 is a flow chart of another method for preparing a display panel provided in an embodiment of the present application.
- FIG46 is a flow chart of another method for preparing a display panel provided in an embodiment of the present application.
- FIG47 is a flow chart of another method for preparing a display panel provided in an embodiment of the present application.
- FIG48 is a flow chart of another method for preparing a display panel provided in an embodiment of the present application.
- FIG49 is an electron microscope schematic diagram of an I-shaped structure in which a region of the first wiring layer not covered by the organic film layer is provided in an embodiment of the present application;
- FIG50 is an electron microscope schematic diagram of a region of a first wiring layer covered by an organic film layer provided in an embodiment of the present application.
- FIG51 is an electron microscope diagram of a residual pixel defining material in an I-shaped structure provided by an embodiment of the present application.
- FIG52 is a schematic diagram of an electron microscope for etching a third material layer provided in an embodiment of the present application.
- FIG53 is another electron microscope schematic diagram of etching the third material layer provided in an embodiment of the present application.
- FIG54 is a partial enlarged schematic diagram of the electron microscope schematic diagram shown in FIG53;
- Figure 55 is a schematic diagram of the structure of a display device provided in an embodiment of the present application.
- the display panel has a display area and a peripheral area surrounding the display area.
- the display panel includes a blocking structure located in the peripheral area and surrounding the display area, which is used to block the overflow of organic materials in the display area.
- the organic film layer located in the area next to the blocking structure needs to be removed.
- the display panel includes a power supply line, which needs to pass through the blocking structure from the peripheral area and connect to the relevant structure of the pixel unit in the display area, thereby providing a power supply signal to the relevant structure of the pixel unit.
- the power line is exposed at the position where the organic film layer is removed.
- the exposed part of the power line may be side-etched, thereby affecting the yield of the display panel and causing poor display effect of the display panel.
- FIG1 is a schematic diagram of the structure of a display panel 10 provided in an embodiment of the present application.
- FIG2 is a partial schematic diagram of the display panel 10 shown in FIG1.
- the display panel 10 includes: a base substrate 101, a plurality of pixel units 102, a blocking structure 103, at least one power supply line 104, and a first organic film layer 105.
- FIG3 is a schematic diagram of a substrate provided by an embodiment of the present application.
- the substrate 101 has a display area 101a and a peripheral area 101b surrounding the display area 101a.
- a plurality of pixel units 102 are located in the display area 101a
- a blocking structure 103 is located in the peripheral area 101b and surrounds the display area 101a, for preventing the organic material in the display area 101a from overflowing.
- At least one power line 104 is located on one side of the substrate 101, and each power line 104 is used to receive a power signal and is connected to the pixel unit 102. Thus, each power line 104 can be used to transmit a power signal to the pixel unit 102, thereby driving the pixel unit 102 to emit light.
- the first organic film layer 105 is located on a side of the power supply line 104 away from the base substrate 101, and the first organic film layer 105 has at least one through-groove area 105a.
- the orthographic projection of the through-groove area 105a on the base substrate 101 and the orthographic projection of the blocking structure 103 on the base substrate 101 are arranged adjacent to each other, and the through-groove area 105a is used to expose the first target area m of the power supply line 104.
- the material of the first organic film layer 105 is an organic material, water and oxygen from the outside may invade the display area 101a along the first organic film layer 105, causing the pixel unit 102 in the display area 101a to fail. Therefore, in order to avoid the failure of the pixel unit 102, the first organic film layer 105 located at the adjacent position of the blocking structure 103 can be removed, that is, the through groove area 105a designed in the first organic film layer 105 is arranged adjacent to the blocking structure 103.
- the first target area m in the power wiring 104 where the first organic film layer 105 is removed will be exposed to the outside, that is, the through groove area 105a of the first organic film layer 105 exposes the first target area m of the power wiring 104.
- the power supply wiring 104 at least comprises a first wiring layer.
- the first wiring layer comprises a first material layer a1, a second material layer a2 and a third material layer a3 which are sequentially stacked in a direction away from the base substrate 101.
- the material of the first material layer a1 is the same as the material of the third material layer a3, for example, the material of the first material layer a1 and the third material layer a3 is titanium (Ti), while the material of the second material layer a2 is different from the material of the first material layer a1 and the third material layer a3, for example, the material of the second material layer a2 is aluminum (Al).
- the display panel 10 also includes other film layers located on the side of the power wiring 104 away from the base substrate 101.
- the first wiring layer of the power wiring 104 is located in the first target area m and is exposed to the outside, the first wiring layer of the power wiring 104 is located in the first target area m.
- the part is easily affected by the process.
- the material of the second material layer a2 is easier to be etched than the material of the first material layer a1 (third material layer a3), referring to Figure 5, the first wiring layer is easily side-etched, and the first wiring layer has an I-shaped (undercut) structure.
- the display panel 10 further includes a packaging film layer (not shown in the figure) for packaging the display area 101a, and the inorganic material layer included in the packaging film layer is prone to cracks at the I-shaped position of the power supply line 104.
- the existence of the crack provides an invasion channel for the invasion of water and oxygen, and the water and oxygen will diffuse toward the display area 101a along the invasion channel, thereby causing the pixel unit 102 of the display area 101a to fail, resulting in the problem of black spots in the display area 101a.
- the main reason for the failure of the pixel unit 102 in the display area 101a is that the second material layer a2 of the first routing layer of the power routing 104 located in the first target area m (the first target area m is not protected by the first organic film layer 105) is etched, resulting in an I-shaped structure of the first routing layer.
- an inorganic film layer for example, a passivation layer (PVX)
- PVX passivation layer
- the solution of forming an inorganic film layer will lead to an increase in the process, such as adding inorganic film layer deposition, exposure and development processes, thereby affecting the production capacity of the display panel.
- the display panel includes multiple source and drain layers (for example, including a first source and drain layer SD1, a second source and drain layer SD2 and a third source and drain layer SD3)
- the inorganic film layer can only be designed between SD1 and SD2, that is, only SD1 can be used to route the power line (the power line is a single-layer line), which is not conducive to reducing the power consumption of the display panel, and the flexibility of the wiring of the power line is poor.
- the orthographic projection of the third material layer a3 of the first routing layer of the power routing 104 located in the first target area m on the base substrate 101 is located within the orthographic projection of the second material layer a2 on the base substrate 101.
- the orthographic projection of the second material layer a2 of the first routing layer of the power routing 104 located in the first target area m on the base substrate 101 is located within the orthographic projection of the first material layer a1 on the base substrate 101.
- the orthographic projection of the second material layer a2 of the first wiring layer of the power line 104 located in the first target area m on the base substrate 101 can be located within the orthographic projection of the first material layer a1 on the base substrate 101.
- the third material layer a3 of the first wiring layer of the power line 104 located in the first target area m can be etched by an etching process, so that the orthographic projection of the third material layer a3 of the power line 104 located in the first target area m on the base substrate 101 is located within the orthographic projection of the second material layer a2 on the base substrate 101, thereby avoiding the I-shaped structure of the portion of the first wiring layer of the power line 104 located in the first target area m.
- the inorganic material layer in the encapsulation film layer included in the display panel 10 can be gradually increased in the first target area m, thereby preventing cracks in the inorganic material layer and further preventing water and oxygen from invading.
- the luminous effect of the pixel unit 102 in the display area 101a can be guaranteed, and black spots in the display area 101a can be avoided.
- an embodiment of the present application provides a display panel, in which a first routing layer of a power routing line has a first target area exposed by a through groove area of a first organic film layer, and an orthographic projection of a third material layer of the first routing layer located in the first target area on the substrate is located within an orthographic projection of the second material layer on the substrate.
- An orthographic projection of a second material layer of the first routing layer located in the first target area on the substrate is located within an orthographic projection of the first material layer on the substrate.
- FIG. 7 is a partial schematic diagram of FIG. 2.
- FIG. 8 is a cross-sectional view of FIG. 7 along the AA direction.
- FIG. 9 to FIG. 7 are cross-sectional views along the BB direction.
- FIG. 10 is a cross-sectional view of FIG. 7 along the CC direction.
- FIG. 11 is a cross-sectional view of FIG. 7 along the DD direction, and
- FIG. 12 is a cross-sectional view of FIG. 7 along the EE direction.
- the first wiring layer of the power wiring 104 is located in the first target region m.
- the first material layer a1 has a first direction X extending along the first direction X.
- the first boundary a11, the first boundary a11 can be the midline of the side of the first material layer a1 in its thickness.
- the second material layer a2 of the first routing layer of the power routing 104 located in the first target area m has a second boundary a21 along the first direction X, and the second boundary a21 can be the midline of the side of the second material layer a2 in its thickness.
- the third material layer a3 of the first routing layer of the power routing 104 located in the first target area m has a third boundary a31 extending along the first direction X, and the third boundary a31 can be the midline of the side of the third material layer a3 in its thickness.
- the inorganic film layer in Figures 8 to 12 refers to a film layer whose material is an inorganic material and is located on the side of the power routing 104 close to the base substrate.
- the organic film layer in Figures 8 to 12 refers to a film layer whose material is an organic material, for example, the organic film layer includes a first organic film layer 105 located on the side of the first routing layer of the power routing 104 away from the base substrate 101.
- the size of the second material layer a2 that is engraved in the subsequent film preparation process is usually less than 3 micrometers ( ⁇ m). Therefore, in order to ensure that the orthographic projection of the third material layer a3 on the base substrate 101 is located within the orthographic projection of the second material layer a2 on the base substrate 101, the distance between the first boundary a11 and the third boundary a31 in the second direction Y can be greater than 3 ⁇ m.
- the second boundary a21 is located between the first boundary a11 and the third boundary a31, thereby making the first material layer a1, the second material layer a2 and the third material layer a3 present a step structure that increases layer by layer.
- the second direction Y is perpendicular to the first direction X.
- the first direction X is the pixel column direction of the display panel 10
- the second direction Y is the pixel row direction of the display panel 10.
- the second boundary a21 being located between the first boundary a11 and the third boundary a31 may mean that the orthographic projection of the second boundary a21 on the base substrate 101 is located between the orthographic projection of the first boundary a11 on the base substrate 101 and the orthographic projection of the third boundary a31 on the base substrate 101 .
- the first organic film layer 105 has a groove region 105b, and the thickness h1 of the first organic film layer 105 in the groove region 105b is less than the thickness h2 of other regions except the groove region 105b.
- the groove region 105b is used to cover the second target region n of the power supply line 104.
- the second target region n and the first target region m are adjacent in the first direction X.
- the same etching process may be used to etch the third material layer a3 of the first wiring layer of the power wiring 104 located in the first target area m, and to etch the groove area 105b of the first organic film layer 105.
- the same mask opening in the mask plate may be used to form the etched third material layer a3 and the groove area 105b.
- the length w1 of the etched area along the first direction X may be slightly larger than the length of the first target area m along the first direction X, and the length w2 along the second direction Y may be determined based on the product, and it is only necessary to ensure that the third boundary a31 of the first wiring layer is relatively
- the second boundary a21 may be far away from the first boundary a11.
- the groove region 105b has a first groove boundary 105b1 which is close to the first wiring layer of the power wiring 104 and extends along the first direction X. Since the groove region 105b and the third material layer a3 are formed by the same etching process, assuming that the mask opening in the mask is a rectangular opening, the orthographic projection of the first groove boundary 105b1 on the base substrate 101 is collinear with the orthographic projection of the third boundary a31 on the base substrate 101.
- the groove area 105b covering the second target area n and the through-groove area 105a exposing the first target area m in the first organic film layer 105 are adjacent in the first direction X.
- the groove area 105b also has a second groove boundary 105b2 away from the through-groove area 105a and extending along the second direction Y, and a third groove boundary 105b3 adjacent to the through-groove area 105a and extending along the second direction Y.
- the distance b between the second groove boundary 105b2 and the third groove boundary 105b3 in the first direction X is greater than 3 ⁇ m. In this way, the etching of the third material layer a3 located in the first target area m of the power wiring 104 can be ensured, and the power wiring 104 is prevented from having an I-shaped structure due to a small etching range.
- a portion of the second material layer a2 of the first routing layer located in the first target area m may also be etched away, and of course the second material layer a2 of the first routing layer located in the first target area m may not be etched away.
- the thickness of the portion of the second material layer a2 located in the first target area m is less than the thickness of the portion of the second material layer a2 located in other areas.
- the surface of the portion of the second material layer a2 located in the first target area (m) away from the base substrate 101 is uneven.
- the surface of the portion of the second material layer a2 located in the first target area (m) away from the base substrate 101 can also be made flat.
- the thickness of the second material layer a2 located in the first target area m may be equal to the thickness of the second material layer a2 located in other areas.
- the display panel 10 includes: an active layer (poly), a first insulating layer, a first gate layer (gate1), a second insulating layer, a second gate layer (gate2), a third insulating layer, an oxide layer (IGZO), a fourth insulating layer, a third gate layer (gate3), an interlayer dielectric layer (inter level
- the display panel 10 includes a first source-drain layer (SD1), a first planarization layer (PLN), a second source-drain layer (SD2), a second planarization layer (PLN2), a third source-drain layer (SD3) and a third planarization layer (PLN3). That is, the display panel 10 has three source-drain layers.
- the organic film layers in FIGS. 8 to 12 include a first planarization layer, a second planarization layer, and a third planarization layer
- the inorganic film layers in FIGS. 8 to 12 include a first insulating layer, a second insulating layer, a third insulating layer, a fourth insulating layer and an interlayer dielectric layer.
- the power supply line 104 can be wired using one, two or three layers of the first source-drain layer (SD1), the second source-drain layer (SD2) and the third source-drain layer (SD3). That is, the power supply line 104 can include one layer of wiring, two layers of wiring or three layers of wiring. If the power supply line 104 is a multi-layer wiring scheme, it is necessary to ensure that the wiring on the upper layer covers the wiring on the lower layer to avoid the wiring on the lower layer being exposed to the outside and affecting the wiring on the lower layer during the subsequent film preparation.
- the power supply wiring 104 includes a third wiring layer, a second wiring layer and a first wiring layer stacked in sequence in a direction away from the base substrate 101.
- the third wiring layer is located at the first source and drain layer (SD1) of the display panel 10
- the second wiring layer is located at the second source and drain layer (SD2)
- the first wiring layer is located at the third source and drain layer (SD3).
- the first flat layer (third organic film layer) between the first source and drain layer and the second source and drain layer has an opening, and the third layer wiring and the second layer wiring are connected through the opening in the first flat layer.
- the second flat layer (second organic film layer) between the second source and drain layer and the third source and drain layer has an opening, and the second layer wiring and the first layer wiring are connected through the opening in the first flat layer.
- the first organic film layer 105 has a through groove area 105a, and the second organic film layer and the third organic film layer also have through groove areas 105a. That is, the area where the first organic film layer 105 is removed next to the blocking structure 103, and the second organic film layer and the third organic film layer are also removed. That is, the through groove area 105a refers to the area where all the film layers composed of organic materials included in the display panel 10 are removed. Since the first layer of wiring covers the second layer of wiring and the third layer of wiring, the design of the through groove area 105a can expose the first target area m of the first wiring layer without exposing the second wiring layer and the third wiring layer.
- the etching process can be used to etch the third layer wiring located in the first target area m in the first layer wiring to avoid the first layer wiring being in an I-shaped structure.
- the power wiring 105 shown in Figures 7 to 12 can be the first layer wiring included in the power wiring 105, and Figures 7 to 12 do not show the second layer wiring and the third layer wiring.
- the display panel 10 when the display panel 10 has three source and drain layers, the display panel 10 It may be an oxide (low temperature polycrystalline oxide, LTPO) display panel, and the oxide display panel includes an oxide thin film transistor.
- oxide low temperature polycrystalline oxide, LTPO
- the display panel 10 includes: an active layer (poly), a first insulating layer, a first gate layer (gate1), a second insulating layer, a second gate layer (gate2), an interlayer dielectric layer (ILD), a first source and drain layer (SD1), a first planar layer (PLN1), a second source and drain layer (SD2) and a second planar layer (PLN2). That is, the display panel 10 has two source and drain layers.
- the power supply line 104 may be arranged in one or two layers of the first source-drain layer and the second source-drain layer. That is, the power supply line 104 may include one layer of lines or two layers of lines. If the power supply line 104 is arranged in two layers, it is necessary to ensure that the lines in the upper layer cover the lines in the lower layer to avoid the lines in the lower layer being exposed to the outside and affecting the lines in the lower layer during the subsequent film preparation.
- the power supply wiring 104 includes a second wiring layer and a first wiring layer stacked in sequence in a direction away from the base substrate 101.
- the second wiring layer is located at the first source and drain layer (SD1) of the display panel 10, and the first wiring layer is located at the second source and drain layer (SD2).
- the first flat layer (second organic film layer) between the first source and drain layer and the second source and drain layer has an opening, and the second layer wiring and the first layer wiring are connected through the opening in the first flat layer.
- the first organic film layer 105 has a through-groove region 105a
- the second organic film layer also has a through-groove region 105a. That is, the region where the first organic film layer 105 is removed next to the blocking structure 103 also removes the second organic film layer. That is, the through-groove region 105a refers to the region where all the film layers composed of organic materials included in the display panel 10 are removed. Since the first layer of wiring covers the second layer of wiring, the design of the through-groove region 105a can expose the first target region m of the first wiring layer without exposing the second wiring layer.
- the etching process can be used to etch the third layer wiring located in the first target area m in the first layer wiring to avoid the first layer wiring being in an I-shaped structure.
- the power wiring 105 shown in Figures 7 to 12 can be the first layer wiring included in the power wiring 105, and Figures 7 to 12 do not show the second layer wiring.
- the display panel 10 when the display panel 10 has two source and drain layers, the display panel 10 may be a low temperature poly-silicon (LTPS) display panel, and the LTPS display panel includes LTPS thin film transistors.
- LTPS low temperature poly-silicon
- the display panel 10 includes: an active layer (poly), a first insulating layer, a first gate layer (gate1), a second insulating layer, a second gate layer (gate2), an interlayer dielectric layer (ILD), a first source and drain layer (SD1) and a first planar layer (PLN1). That is, the display panel 10 has a source and drain layer.
- the power supply line 104 can be wired using the first source and drain layer. That is, the power supply line 104 can include a layer of lines.
- the power supply line 104 includes a first line layer, and the first flat layer on the first line layer can be the first organic film layer 105 described in the above embodiment.
- the power supply line 105 shown in Figures 7 to 12 can be the first layer of lines included in the power supply line 105.
- the display panel 10 when the display panel 10 has a source-drain electrode layer, the display panel 10 may be a low-temperature polycrystalline silicon (LTPS) display panel, and the LTPS display panel includes LTPS thin film transistors.
- LTPS low-temperature polycrystalline silicon
- At least one power supply line 104 includes a first signal power supply line 104a and a second signal power supply line 104b spaced apart in the second direction Y.
- the first signal power supply line 104a can provide a first signal for the pixel unit 102, and the first signal power supply line 104a can be a negative power supply line (referred to as a VSS line).
- the second signal power supply line 104b can provide a second signal for the pixel unit 102, and the second signal power supply line 104b can be a positive power supply line (referred to as a VDD line).
- the through-slot area 105a has a first sub-through-slot area 105a1 for exposing the first signal power line 104a and a second sub-through-slot area 105a2 for exposing the second signal power line 104b.
- the length k1 of the first sub-through-slot area 105a1 along the first direction X is less than or equal to the length k2 of the second sub-through-slot area 105a2 along the first direction X.
- the first sub-through-slot area 105a1 of the area where the VSS line is set can be designed to be smaller, so that the area has an organic film layer to insulate the double-layered wiring of other signal lines.
- the orthographic projection of the power supply line 104 on the base substrate 101 partially overlaps with the orthographic projection of the blocking structure 103 on the base substrate 101.
- a portion of the power supply line 104 is located on a side of the blocking structure 103 close to the display area 101a to connect with the pixel unit 102, and another portion of the power supply line 104 is located on a side of the blocking structure 103 away from the display area 101a to receive a power signal.
- the orthographic projection of the blocking structure 103 on the substrate 101 may be a ring structure.
- a portion of the power supply line 104 located on the side of the blocking structure 103 close to the display area 101a is located on the side of the blocking structure 103 close to the display area 101a.
- the power line 104 is located within the area surrounded by the blocking structure 103.
- the other part of the power line 104 located on the side of the blocking structure 103 away from the display area 101a is located outside the area surrounded by the blocking structure 103.
- the power line 104 can pass through the blocking structure 103 and enter the area surrounded by the blocking structure 103.
- the part of the blocking structure 103 through which the power line 104 passes can also be called a port.
- the barrier structure 103 may include a first barrier dam 1031, a second barrier dam 1032, and a third barrier dam 1033.
- the first barrier dam 1031, the second barrier dam 1032, and the third barrier dam 1033 are sequentially arranged in a direction away from the display area 101a.
- the through-slot region 105a may be located on the side of the third barrier dam 1033 away from the display region 101a, and may also be located between adjacent barrier dams.
- two through-slot regions 105a are designed, one of which is located on the side of the third barrier dam 1033 away from the display region 101a, and the other through-slot region 105a is located between the second barrier dam 1032 and the third barrier dam 1033.
- no through-slot region 105a is designed between the first barrier dam 1031 and the second barrier dam 1032, and the through-slot region 105a between the second barrier dam 1032 and the third barrier dam 1033 is only located in the area where the first power signal routing is located, and not in the area where the second power signal routing is located.
- This design method allows the cathode layer and the barrier dam to overlap, thereby facilitating the realization of a narrow frame of the display panel.
- a through groove region 105 a may be designed between the first barrier dam 1031 and the second barrier dam 1032 , and between the second barrier dam 1032 and the third barrier dam 1033 .
- each barrier dam in the barrier structure 103 includes at least one layer of the organic film layer in the display panel.
- the organic film layer in the display panel 10 includes: a third organic film layer, a second organic film layer and a first organic film layer.
- the organic film layer in the display panel 10 also includes: a pixel defining layer and a supporting layer.
- one of the first organic film layer, the second organic film layer and the third organic film layer is located in an area adjacent to any barrier dam in the barrier structure 103 and where no through groove area 105a is provided. That is, if the through groove area 105a is provided between adjacent barrier dams or beside the barrier dams, or an organic film layer is provided.
- the heights of the first barrier dam 1031, the second barrier dam 1032, and the third barrier dam 1033 may increase in sequence in the direction away from the display area 101a. That is, the height of the first barrier dam 1031 is less than the height of the second barrier dam 1032, and the height of the second barrier dam 1032 is less than the height of the third barrier dam 1033.
- the heights of the first barrier dam 1031, the second barrier dam 1032, and the third barrier dam 1033 are This embodiment of the present application does not limit this.
- the display panel 10 further includes an encapsulation film layer (not shown) for encapsulating the display area 101a.
- the encapsulation film layer may include: a first film layer, a second film layer and a third film layer stacked in a direction away from the base substrate 101.
- the first film layer and the third film layer may be made of an inorganic material, and the second film layer may be made of an organic material.
- the first film layer and the third film layer may be made of one or more inorganic oxides such as SiNx (silicon nitride), SiOx (silicon oxide) and SiOxNy (silicon oxynitride).
- the second film layer may be made of a resin material.
- the resin may be a thermoplastic resin or a thermoplastic resin, the thermoplastic resin may include an acrylic (PMMA) resin, and the thermosetting resin may include an epoxy resin.
- the second film layer can be located in the area surrounded by the blocking structure 103, and the first film layer and the third film layer can cover the area surrounded by the blocking structure 103 and cover the blocking structure 103. That is, the orthographic projections of the first film layer and the third film layer on the base substrate 101 can be located on the side of the blocking structure 103 away from the display area 101a, that is, can be located in the first target area m of the power line 104.
- the power line 104 is prevented from being in an I-shape, thereby preventing the first film layer and the third film layer of the packaging film layer from cracking in the first target area m.
- the second film layer can be manufactured by ink jet printing (IJP) method.
- the first film layer and the third film layer can be manufactured by chemical vapor deposition (CVD) method.
- the side edges of the third material layer a3, the second material layer a2 and the first material layer a1 are flat side edges, and the flat side edges are inclined relative to the supporting surface of the base substrate 101.
- the orthographic projection of the third material layer a3 on the base substrate 101 is located within the orthographic projection of the second material layer a2 on the base substrate 101
- the orthographic projection of the second material layer a2 on the base substrate 101 is located within the orthographic projection of the first material layer a1 on the base substrate 101.
- the embodiment of the present application provides a display panel, in which the first routing layer of the power routing has a first target area exposed by the through-groove area of the first organic film layer, and the orthographic projection of the third material layer of the first routing layer located in the first target area on the base substrate is located within the orthographic projection of the second material layer on the base substrate.
- the orthographic projection of the second material layer of the first routing layer located in the first target area on the base substrate is located within the orthographic projection of the first material layer on the base substrate.
- the subsequent encapsulation film layer of the board generates cracks in the first target area, thereby preventing water and oxygen from invading the display area along the intrusion channels generated by the cracks.
- the solution of the embodiment of the present application can ensure the luminous effect of the pixel unit in the display area, avoid the occurrence of black spots in the display area, and the yield of the display panel is high, and the display effect of the display panel is better.
- FIG13 is a flow chart of a method for preparing a display panel provided in an embodiment of the present application. Referring to FIG13 , the method includes:
- Step S101 provide a base substrate.
- the base substrate 101 has a display region 101 a and a peripheral region 101 b surrounding the display region 101 a .
- Step S102 forming a plurality of pixel units, a blocking structure and at least one initial power supply line on one side of the substrate.
- a plurality of pixel units 102 are located in the display area 101a, the blocking structure 103 surrounds the display area 101a, and each initial power supply line is used to receive a power supply signal and is connected to the plurality of pixel units 102 to provide a power supply signal to the plurality of pixel units 102.
- the initial power supply line at least includes a first initial wiring layer, and the first initial wiring layer includes a first material layer a1, a second material layer a2, and a third material layer a3 stacked in sequence in a direction away from the base substrate 101.
- the material of the first material layer a1 is the same as the material of the third material layer a3, and the material of the second material layer a2 is different from the materials of the first material layer a1 and the third material layer a3.
- Step S103 forming an initial organic film layer on a side of the initial power supply line away from the base substrate.
- the initial organic film layer has at least one through-groove region 105a, the orthographic projection of the through-groove region 105a on the base substrate 101 and the orthographic projection of the blocking structure 103 on the base substrate 101 are arranged adjacent to each other.
- the through-groove region 105a is used to expose the first target region m of the initial power supply wiring.
- Step S104 etching the third material layer of the first initial routing layer of at least one initial power routing line located in the first target area and etching the initial organic film layer by an etching process to obtain a first routing layer and a first organic film layer of at least one initial power routing line.
- the first routing layer of the power routing 104 is located in the first target area m, and the orthographic projection of the third material layer a3 on the base substrate 101 is located within the orthographic projection of the second material layer a2 on the base substrate 101, and the first routing layer of the power routing 104 is located in the first target area m, and the orthographic projection of the second material layer a2 on the base substrate 101 is located within the orthographic projection of the first material layer a1 on the base substrate 101.
- the present invention provides a method for preparing a display panel.
- the first routing layer of the power routing in the display panel has a first target area exposed by the through groove area of the first organic film layer, and the orthographic projection of the third material layer of the first routing layer located in the first target area on the base substrate is located within the orthographic projection of the second material layer on the base substrate.
- the orthographic projection of the second material layer of the first routing layer located in the first target area on the base substrate is located within the orthographic projection of the first material layer on the base substrate.
- FIG14 is a flow chart of another method for manufacturing a display panel provided in an embodiment of the present application. Taking the case where the power wiring 104 includes a first wiring layer as an example, referring to FIG14, the method includes:
- Step S201 forming an active layer, a first insulating layer, a first gate layer, a second insulating layer, a second gate layer and an interlayer dielectric layer in sequence on one side of a substrate.
- the active layer includes a plurality of active patterns, each of which can be used to constitute a thin film transistor in a pixel circuit included in the pixel unit 102.
- the first insulating layer is used to insulate the active layer from the first gate layer.
- the first gate layer includes a plurality of first gate patterns, and the orthographic projection of each first gate pattern on the substrate 101 partially overlaps with the orthographic projection of an active pattern on the substrate 101, and the overlapping area can be a channel of the thin film transistor.
- the second insulating layer is used to insulate the first gate layer from the second gate layer.
- the second gate layer includes a plurality of second gate patterns, each of which can be used to constitute a plate of a storage capacitor in a pixel circuit.
- the interlayer dielectric layer is used to insulate the second gate layer from the first source and drain layer formed subsequently.
- Step S202 forming a first source-drain electrode layer and an initial planarization layer on a side of the interlayer dielectric layer away from the substrate.
- the first source and drain electrode layer at least includes a first wiring layer of the power wiring 104.
- the first wiring layer includes a first material layer a1, a second material layer a2 and a third material layer a3 stacked in sequence in a direction away from the base substrate 101.
- the materials of the first material layer a1 and the third material layer a3 may both be titanium (Ti), and the material of the second material layer a2 may be aluminum (Al). That is, the first wiring layer may be a triple-layer structure of Ti/Al/Ti.
- the initial flat layer (initial organic film layer) has at least one through-groove region 105a, and the through-groove region 105a is used to expose the first target region m of the first layer wiring.
- the initial planar layer further includes a pattern for forming the barrier structure 103 in the display panel 10 .
- the initial planar layer includes at least one annular pattern surrounding the display area 101 a , and the annular pattern is used to form a barrier dam in the barrier structure 103 .
- the through-groove region 105 a and the annular pattern used to form a blocking dam in the blocking structure 103 are disposed adjacent to each other, that is, the through-groove region 105 a and the blocking structure 103 are disposed adjacent to each other.
- Step S203 forming an anode layer of a plurality of pixel units on a side of the initial planar layer away from the base substrate.
- the process of forming the anode layer includes: forming an anode film on the side of the initial flat layer away from the base substrate 101, and processing the anode film using a patterning process to form the anode layer of multiple pixel units 102.
- the patterning process includes: photoresist coating, exposure, development, etching, and removal of the photoresist.
- the developer used in the development process of preparing the anode layer will affect the first target area m of the first wiring layer, and will have a greater impact on the second material layer a2 of the first wiring layer.
- the first boundary a11 of the first material layer a1 of the first routing layer located in the first target area m, the second boundary a21 of the second material layer a2, and the third boundary a31 of the third material layer a3 are collinear.
- the developer used to prepare the anode layer will perform side engraving on the second material layer a2.
- the orthographic projection of the second material layer a2 of the first routing layer located in the first target area m on the base substrate 101 is located within the orthographic projection of the third material layer a3 on the base substrate 101, and the first boundary a11 of the first material layer a1 of the first routing layer located in the first target area m and the third boundary a31 of the third material layer a3 are collinear. That is, after forming the anode layer, the first routing layer has an I-shaped structure. Among them, the first boundary a11, the second boundary a21, and the third boundary a31 all extend along the first direction X.
- the layer before etching is referred to as the first initial routing layer, and the layer after etching is referred to as the first routing layer.
- Step S204 etching the third material layer of the first initial wiring layer located in the first target area and etching the initial planar layer using an etching process to obtain a first wiring layer and a first planar layer.
- the orthographic projection of the third material layer a3 of the first target area m on the base substrate 101 is located at the second material layer a2 of the first target area m.
- the I-shaped structure of the first initial wiring layer can be eliminated, so that the final first layer wiring has a step structure.
- the etching process includes: coating photoresist on the side of the initial organic film layer and the first target area m of the first initial wiring layer away from the substrate substrate; exposing the photoresist using a mask; developing the photoresist using a developer to remove the exposed portion of the photoresist; using an etching process to remove the third material layer of the first initial wiring layer located in the first target area and the portion of the initial organic film layer not protected by the photoresist; and removing the remaining photoresist.
- the mask has a plurality of mask openings, each of which has a first mask boundary extending along the first direction X.
- the first mask boundary is used to form a third boundary a31 of the third material layer a3 after etching, and the orthographic projection of the first mask boundary on the base substrate 101 is located within the orthographic projection of the first material layer a1 on the base substrate 101.
- the distance between the first mask boundary and the first boundary a11 in the second direction Y is greater than 3 ⁇ m.
- the distance between the third boundary a13 and the first boundary a11 in the second direction Y can be greater than 3 ⁇ m.
- the first mask boundary is also used to form a first groove boundary 105b1 of the groove region 105b of the first organic film layer 105 after etching.
- the first groove boundary 105b1 is close to the first wiring layer of the power wiring 104 and extends along the first direction X.
- the thickness of the first organic film layer 105 in the groove region 105b is less than the thickness of other regions outside the groove region 105b.
- the groove region is used to cover the second target region n of the first wiring layer of the power wiring 104.
- the second target region n and the first target region m are adjacent in the first direction X.
- the mask opening also has a second mask boundary extending along the second direction Y.
- the through-groove region 105a is located on one side of the second mask boundary, and the second mask boundary is used to form a second groove boundary 105b2 of the groove region 105b of the first organic film layer 105 away from the through-groove region 105a and extending along the second direction Y.
- the groove region 105b also has a third groove boundary 105b3 adjacent to the through-groove region 105a and extending along the second direction Y. The distance between the second groove boundary 105b2 and the third groove boundary 105b3 in the first direction X is greater than 3 ⁇ m.
- Step S205 sequentially forming a pixel defining layer on the side of the anode layer away from the base substrate, and a light emitting layer and cathode layer.
- the pixel defining layer may have a plurality of hollow regions, each of which may be used to expose an anode pattern in the anode layer.
- the preparation process of the pixel defining layer includes: forming a pixel defining film on a side of the anode layer away from the base substrate 101, and processing the pixel defining film using a patterning process to obtain the pixel defining layer.
- the pixel definition material will remain in the I-shaped structure.
- the pixel definition material is an organic material (such as polyimide PI), so the pixel definition material will absorb water and oxygen, which may cause some impact on the display of the display panel 10.
- the solution of the embodiment of the present application has eliminated the I-shaped structure of the first wiring layer through the above-mentioned step S204. Therefore, after the pixel definition layer is prepared, there will usually be no pixel definition material remaining at the position of the first wiring layer, and thus the display of the display panel 10 will not be affected.
- the light-emitting layer and the cathode layer can be prepared in sequence, and then the preparation of multiple pixel units 102 is completed to realize the display of the display panel 10.
- the cathode layer of multiple pixel units 102 can be a common film layer, and the cathode layer can be located in the peripheral area 101b in addition to the display area 101a.
- the boundary of the cathode layer in the peripheral area 101b is located on the side of the through groove area 105a close to the display area 101a, so as to avoid the cathode layer being directly connected to the power supply wiring 104 of different signals through the through groove area 105a, thereby preventing a short circuit.
- Step S206 forming a packaging film layer on a side of the cathode layer away from the base substrate.
- the packaging film layer may include: a first film layer, a second film layer and a third film layer stacked in a direction away from the base substrate 101 .
- the first film layer and the third film layer may be made of an inorganic material, and the second film layer may be made of an organic material.
- the first film layer and the third film layer may be made of one or more inorganic oxides such as SiNx (silicon nitride), SiOx (silicon oxide) and SiOxNy (silicon oxynitride).
- the second film layer may be made of a resin material.
- the resin may be a thermoplastic resin or a thermoplastic resin, the thermoplastic resin may include an acrylic (PMMA) resin, and the thermosetting resin may include an epoxy resin.
- the second film layer can be located in the area surrounded by the blocking structure 103, and the first film layer and the third film layer can cover the area surrounded by the blocking structure 103 and cover the blocking structure 103. That is, the orthographic projections of the first film layer and the third film layer on the base substrate 101 can be located on the side of the blocking structure 103 away from the display area 101a, that is, can be located in the first target area m of the first wiring layer.
- the first wiring layer finally formed is prevented from being in an I-shape, thereby preventing the first film layer and the third film layer of the packaging film layer from cracking in the first target area m.
- the second film layer may be manufactured by IJP method.
- the first film layer and the third film layer may be manufactured by CVD method.
- step S204 Since the above step S204 has removed the I-shaped structure of the first wiring layer, even if the first film layer and the third film layer of the packaging film layer cover the first target area m, they will not break due to the existence of the I-shaped structure, but can climb layer by layer on the step structure of the first target area m, thereby avoiding the formation of an invasion channel for water and oxygen, and avoiding the occurrence of black spots in the display area 101a.
- FIG16 is a flow chart of another method for manufacturing a display panel provided by an embodiment of the present application. Taking the case where the power wiring 104 includes a first wiring layer as an example, referring to FIG16 , the method includes:
- Step S301 forming an active layer, a first insulating layer, a first gate layer, a second insulating layer, a second gate layer and an interlayer dielectric layer in sequence on one side of a substrate.
- step S301 can refer to the relevant description in the above-mentioned step S201, and the embodiment of the present application will not be repeated here.
- Step S302 forming a first source and drain electrode layer and an initial planarization layer on a side of the interlayer dielectric layer away from the substrate.
- step S302 can refer to the relevant description in the above-mentioned step S202, and the embodiment of the present application will not be repeated here.
- Step S303 forming an anode layer of a plurality of pixel units on a side of the initial planar layer away from the base substrate.
- step S303 can refer to the relevant description in the above-mentioned step S203, and the embodiment of the present application will not be repeated here.
- Step S307 forming a packaging film layer on a side of the cathode layer away from the base substrate.
- step S401 can refer to the relevant description in the above-mentioned step S201, and the embodiment of the present application will not be repeated here.
- Step S402 forming a first source-drain electrode layer, a first initial planarization layer, a second source-drain electrode layer and a second initial planarization layer on a side of the interlayer dielectric layer away from the substrate.
- the first source-drain layer at least includes the second routing layer of the power routing 104.
- the second source-drain layer at least includes the first routing layer of the power routing 104.
- the orthographic projection of the first routing layer on the base substrate 101 covers the orthographic projection of the second routing layer on the base substrate 101.
- the first routing layer and the second routing layer both include a first material layer a1, a second material layer a2, and a third material layer a3 stacked in sequence in a direction away from the base substrate 101.
- Step S403 forming an anode layer of a plurality of pixel units on a side of the second initial planar layer away from the base substrate.
- the process of forming the anode layer includes: forming an anode film on the side of the second initial flat layer away from the base substrate 101, and processing the anode film using a patterning process to form the anode layer of multiple pixel units 102.
- the patterning process includes: photoresist coating, exposure, development, etching, and removing the photoresist.
- the first routing layer before etching is referred to as the first initial routing layer
- the first routing layer after etching is referred to as the first routing layer.
- the first flat layer and the second flat layer may also be etched.
- the first flat layer and the second flat layer before etching are collectively referred to as the initial flat layer
- the first flat layer and the second flat layer after etching are collectively referred to as the flat layer.
- Step S404 Etch the third material layer of the first initial wiring layer located in the first target area and etch the initial planar layer using an etching process to obtain a first wiring layer and a planar layer.
- the first initial wiring layer is located in the first target area m, the portion thereof is exposed.
- the first wiring layer is located outside and is in an I-shaped structure due to the influence of the developer of the anode layer in the above step S403. Therefore, the third material layer a3 of the first initial wiring layer located in the first target area m can be etched by an etching process to obtain the first wiring layer. This process can be called a TTE process.
- the orthographic projection of the third material layer a3 of the first target area m on the base substrate 101 is located within the orthographic projection of the second material layer a2 of the first target area m on the base substrate 101. That is, the I-shaped structure of the first initial wiring layer can be eliminated, so that the final first layer wiring has a step structure.
- a portion of the initial flat layer may also be etched to obtain a final flat layer.
- the formed flat layer has a groove area 105b, and the thickness of the portion of the flat layer located in the groove area 105b is less than the thickness of the portion located in other areas.
- Step S405 forming a pixel defining layer, a light emitting layer and a cathode layer in sequence on a side of the anode layer away from the base substrate.
- step S405 can refer to the relevant description in the above-mentioned step S205, and the embodiment of the present application will not be repeated here.
- Step S406 forming a packaging film layer on a side of the cathode layer away from the base substrate.
- step S406 can refer to the relevant description in the above-mentioned step S206, and the embodiment of the present application will not be repeated here.
- FIG46 is a flow chart of another method for manufacturing a display panel provided in an embodiment of the present application. Taking the case where the power supply wiring 104 includes a first layer wiring and a second layer wiring as an example, referring to FIG46 , the method includes:
- Step S501 forming an active layer, a first insulating layer, a first gate layer, a second insulating layer, a second gate layer and an interlayer dielectric layer in sequence on one side of a substrate.
- step S501 can refer to the relevant description in the above-mentioned step S201, and the embodiment of the present application will not be repeated here.
- Step S502 forming a first source-drain electrode layer, a first initial planarization layer, a second source-drain electrode layer and a second initial planarization layer on a side of the interlayer dielectric layer away from the substrate.
- step S502 can refer to the relevant description in the above-mentioned step S402, and the embodiment of the present application will not be repeated here.
- Step S503 forming a plurality of anodes of pixel units on a side of the second initial flat layer away from the substrate.
- Polar layer
- step S503 can refer to the relevant description in the above-mentioned step S403, and the embodiment of the present application will not be repeated here.
- Step S504 forming a pixel defining layer on a side of the anode layer away from the base substrate.
- step S504 can refer to the relevant description in the above-mentioned step S304, and the embodiment of the present application will not be repeated here.
- Step S505 etching the third material layer of the first initial wiring layer located in the first target area and etching the initial planar layer using an etching process to obtain a first wiring layer and a planar layer.
- an etching process can be used to etch the third material layer a3 of the first initial wiring layer located in the first target area m, thereby obtaining the first wiring layer. This process can be called a TTE process.
- the orthographic projection of the third material layer a3 of the first target area m on the base substrate 101 is located within the orthographic projection of the second material layer a2 of the first target area m on the base substrate 101. That is, the I-shaped structure of the first initial wiring layer can be eliminated, so that the final first layer wiring has a step structure. In addition, the pixel defining material remaining in the I-shaped structure can be removed.
- a portion of the initial flat layer may also be etched to obtain a final flat layer.
- the formed flat layer has a groove area 105b, and the thickness of the portion of the flat layer located in the groove area 105b is less than the thickness of the portion located in other areas.
- Step S506 forming a light emitting layer and a cathode layer in sequence on a side of the pixel defining layer away from the base substrate.
- step S506 can refer to the relevant description in the above-mentioned step S306, and the embodiment of the present application will not be repeated here.
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Abstract
Description
Claims (24)
- 一种显示面板(10),其特征在于,所述显示面板(10)包括:衬底基板(101),所述衬底基板(101)具有显示区域(101a)以及围绕所述显示区域(101a)的周边区域(101b);多个像素单元(102),所述多个像素单元(102)位于所述显示区域(101a);阻挡结构(103),所述阻挡结构(103)围绕所述显示区域(101a);至少一条电源走线(104),位于所述衬底基板(101)的一侧,每条所述电源走线(104)用于接收电源信号,且与所述多个像素单元(102)连接;第一有机膜层(105),所述第一有机膜层(105)位于所述电源走线(104)远离所述衬底基板(101)的一侧,且所述第一有机膜层(105)具有至少一个通槽区域(105a),所述通槽区域(105a)在所述衬底基板(101)上的正投影和所述阻挡结构(103)在所述衬底基板(101)上的正投影相邻设置,且所述通槽区域(105a)用于露出所述电源走线(104)的第一目标区域(m);其中,所述电源走线(104)至少包括第一走线层,所述第一走线层包括沿远离所述衬底基板(101)的方向依次层叠的第一材料层(a1),第二材料层(a2)以及第三材料层(a3),所述第一走线层位于所述第一目标区域(m)的第三材料层(a3)在所述衬底基板(101)上的正投影位于所述第二材料层(a2)在所述衬底基板(101)上的正投影内,且所述第一走线层位于所述第一目标区域(m)的第二材料层(a2)在所述衬底基板(101)上的正投影位于所述第一材料层(a1)在所述衬底基板(101)上的正投影内。
- 根据权利要求1所述的显示面板,其特征在于,所述第一走线层位于所述第一目标区域(m)的第一材料层(a1)具有沿第一方向(X)延伸的第一边界(a11),所述第一走线层位于所述第一目标区域(m)的第二材料层(a2)具有沿第一方向(X)延伸的第二边界(a21),所述第一走线层位于所述第一目标区域(m)的第三材料层(a3)具有沿第一方向(X)延伸的第三边界(a31);其中,所述第一边界(a11)与所述第三边界(a31)在第二方向(Y)上的距离大于3微米,所述第二边界(a21)位于所述第一边界(a11)和所述第三边界(a31)之间,所述第二方向(Y)和所述第一方向(X)垂直。
- 根据权利要求1或2所述的显示面板,其特征在于,所述第一有机膜层(105)具有凹槽区域(105b),所述第一有机膜层(105)位于所述凹槽区域(105b)的厚度,小于除所述凹槽区域(105b)之外的其他区域的厚度,所述凹槽区域(105b)用于覆盖所述第一走线层的第二目标区域(n);其中,所述第二目标区域(n)和所述第一目标区域(m)在所述第一方向(X)上相邻。
- 根据权利要求3所述的显示面板,其特征在于,所述凹槽区域(105b)具有靠近所述第一走线层且沿第一方向(X)延伸的第一凹槽边界(105b1),所述第一走线层位于所述第一目标区域(m)的第三材料层(a3)具有沿所述第一方向(X)延伸的第三边界(a31);其中,所述第一凹槽边界(105b1)在所述衬底基板(101)上的正投影,与所述第三边界(a31)在所述衬底基板(101)上的正投影共线。
- 根据权利要求4所述的显示面板,其特征在于,所述凹槽区域(105b)还具有远离所述通槽区域(105a)且沿第二方向(Y)延伸的第二凹槽边界(105b2),以及和所述通槽区域(105a)相邻且沿所述第二方向(Y)延伸的第三凹槽边界(105b3);其中,所述第二方向(Y)和所述第一方向(X)垂直;所述第二凹槽边界(105b2)和所述第三凹槽边界(105b3)在所述第一方向(X)上的距离大于3微米。
- 根据权利要求1至5任一所述的显示面板,其特征在于,所述电源走线(104)包括沿远离所述衬底基板(101)的方向依次层叠的第三走线层,第二走线层以及所述第一走线层;所述显示面板(10)包括:位于所述第三走线层和所述第二走线层之间的第三有机膜层,以及位于所述第二走线层和所述第一走线层之间的第二有机膜层,所述第一有机膜层(105)位于所述第一走线层远离所述衬底基板(101)的一侧;其中,所述第三走线层和所述第二走线层通过所述第三有机膜层中的开口连接,所述第二走线层和所述第一走线层通过所述第二有机膜层中的开口连接; 所述通槽区域(105a)用于露出所述第一走线层的第一目标区域(m)。
- 根据权利要求1至5任一所述的显示面板,其特征在于,所述电源走线(104)包括沿远离所述衬底基板(101)的方向依次层叠的第二走线层以及所述第一走线层;所述显示面板(10)包括:位于所述第二走线层和所述第一走线层之间的第二有机膜层,所述第一有机膜层(105)位于所述第一走线层远离所述衬底基板(101)的一侧;其中,所述第二走线层和所述第一走线层通过所述第二有机膜层中的开口连接;所述通槽区域(105a)用于露出所述第一走线层的第一目标区域(m)。
- 根据权利要求1至7任一所述的显示面板,其特征在于,所述至少一条电源走线(104)包括在所述第二方向(Y)上方间隔设置的第一信号电源走线(104a)和第二信号电源走线(104b),所述通槽区域(105a)具有用于露出所述第一信号电源走线(104a)的第一子通槽区域(105a1)和用于露出所述第二信号电源走线(104b)的第二子通槽区域(105a2);其中,所述第一子通槽区域(105a1)沿所述第一方向(X)的长度,小于或等于所述第二子通槽区域(105a2)沿所述第一方向(X)的长度。
- 根据权利要求1至8任一所述的显示面板,其特征在于,所述第二材料层(a2)位于所述第一目标区域(m)的部分的厚度,小于或等于所述第二材料层(a2)位于所述其他区域的部分的厚度。
- 根据权利要求9所述的显示面板,其特征在于,在所述第二材料层(a2)位于所述第一目标区域(m)的部分的厚度小于所述第二材料层(a2)位于所述其他区域的部分的厚度的情况下,所述第二材料层(a2)位于所述第一目标区域(m)的部分远离所述衬底基板(101)的表面凹凸不平。
- 根据权利要求1至10任一所述的显示面板,其特征在于,所述阻挡结构(103)包括:沿远离所述显示区域(101a)依次设置的第一阻挡坝(1031),第二阻挡坝(1032)以及第三阻挡坝(1033);其中,所述第一有机膜层(105)具有两个所述通槽区域(105a),其中一个所述通槽区域(105a)位于所述第三阻挡坝(1033)远离所述显示区域(101a)的一侧,另外一个所述通槽区域(105a)位于所述第二阻挡坝(1032)和所述第三阻挡坝(1033)之间。
- 根据权利要求11所述的显示面板,其特征在于,所述阻挡结构(103)中的每个阻挡坝均包括所述显示面板(10)中的有机膜层中的至少一层,所述显示面板(10)中的有机膜层包括:第三有机膜层,第二有机膜层以及所述第一有机膜层;其中,所述第一有机膜层,所述第二有机膜层以及所述第三有机膜层中的其中一个有机膜层位于所述阻挡结构(103)中的任一阻挡坝相邻且未设置所述通槽区域(105a)的区域。
- 根据权利要求1至12任一所述的显示面板,其特征在于,所述电源走线(104)中被所述显示面板(10)中的有机膜层覆盖的区域中,所述第三材料层(a3),所述第二材料层(a2)以及所述第一材料层(a1)的侧边为平坦侧边,且所述平坦侧边相对于所述衬底基板(101)的承载面倾斜;其中,所述第三材料层(a3)在所述衬底基板(101)上的正投影位于所述第二材料层(a2)在所述衬底基板(101)上的正投影内,所述第二材料层(a2)在所述衬底基板(101)上的正投影位于所述第一材料层(a1)在所述衬底基板(101)上的正投影内。
- 一种显示面板的制备方法,其特征在于,所述方法包括:提供一衬底基板(101),所述衬底基板(101)具有显示区域(101a)以及围绕所述显示区域(101a)的周边区域(101b);在所述衬底基板(101)的一侧形成多个像素单元(102),阻挡结构(103)以及至少一条初始电源走线,所述多个像素单元(102)位于所述显示区域(101a),所述阻挡结构(103)围绕所述显示区域(101a),每条所述初始电源走线用于接收电源信号,且与所述多个像素单元(102)连接;所述初始电源走线至少包括第一初始走线层,所述第一初始走线层包括沿远离所述衬底基板 (101)的方向依次层叠的第一材料层(a1),第二材料层(a2)以及第三材料层(a3);在所述初始电源走线远离所述衬底基板(101)的一侧形成初始有机膜层,所述初始有机膜层具有至少一个通槽区域(105a),所述通槽区域(105a)在所述衬底基板(101)上的正投影和所述阻挡结构(103)在所述衬底基板(101)上的正投影相邻设置,且所述通槽区域(105a)用于露出所述初始电源走线的第一目标区域(m);采用刻蚀工艺刻蚀所述至少一条初始电源走线的所述第一初始走线层位于所述第一目标区域(m)的第三材料层(a3)以及刻蚀所述初始有机膜层,得到至少一条电源走线(104)的第一走线层和第一有机膜层(105),所述第一走线层位于所述第一目标区域(m)的第三材料层(a3)在所述衬底基板(101)上的正投影位于所述第二材料层(a2)在所述衬底基板(101)上的正投影内,且所述第一走线层位于所述第一目标区域(m)的第二材料层(a2)在所述衬底基板(101)上的正投影位于所述第一材料层(a1)在所述衬底基板(101)上的正投影内。
- 根据权利要求14所述的方法,其特征在于,形成多个像素单元(102)包括:在所述初始有机膜层远离所述衬底基板(101)的一侧依次形成阳极层,像素界定层,发光层以及阴极层;所述采用刻蚀工艺刻蚀所述至少一条初始电源走线的所述第一初始走线层位于所述第一目标区域(m)的第三材料层(a3)以及刻蚀所述初始有机膜层,包括:在形成所述阳极层之后,且在形成所述像素界定层之前,所述采用刻蚀工艺刻蚀所述至少一条初始电源走线的所述第一初始走线层位于所述第一目标区域(m)的第三材料层(a3)以及刻蚀所述初始有机膜层。
- 根据权利要求15所述的方法,其特征在于,形成所述阳极层之前,所述第一初始走线层位于所述第一目标区域(m)的第一材料层(a1)的第一边界(a11),第二材料层(a2)的第二边界(a21)以及第三材料层(a3)的第三边界(a31)共线;形成所述阳极层之后,所述第一初始走线层位于所述第一目标区域(m)的第二材料层(a2)在所述衬底基板(101)上的正投影位于所述第三材料层(a3)在所述衬底基板(101)上的正投影内,且所述第一初始走线层位于所述第一目标区域(m)的第一材料层(a1)的第一边界(a11)以及第三材料层(a3)的第三边界(a31)共线;其中,所述第一边界(a11),所述第二边界(a21)以及所述第三边界(a31)均沿第一方向(X)延伸。
- 根据权利要求16所述的方法,其特征在于,形成多个像素单元(102)包括:在所述第一有机膜层(105)远离所述衬底基板(101)的一侧依次形成阳极层,像素界定层,发光层以及阴极层;所述采用刻蚀工艺刻蚀所述至少一条初始电源走线的所述第一初始走线层位于所述第一目标区域(m)的第三材料层(a3)以及刻蚀所述初始有机膜层,包括:在形成所述像素界定层之后,且在形成所述发光层之前,所述采用刻蚀工艺刻蚀所述至少一条初始电源走线的所述第一初始走线层位于所述第一目标区域(m)的第三材料层(a3)以及刻蚀所述初始有机膜层。
- 根据权利要求17所述的方法,其特征在于,形成所述像素界定层之前,第一初始走线层位于所述第一目标区域(m)的第二材料层(a2)在所述衬底基板(101)上的正投影位于所述第三材料层(a3)在所述衬底基板(101)上的正投影内,且所述第一初始走线层位于所述第一目标区域(m)的第一材料层(a1)的第一边界(a11)以及第三材料层(a3)的第三边界(a31)共线;形成所述像素界定层之后,所述像素界定层的部分材料位于内缩区域,所述内缩区域为所述第一初始走线层具有第一材料层(a1)和第三材料层(a3),且不具有第二材料层(a2)的区域;在所述采用刻蚀工艺刻蚀所述至少一条初始电源走线的所述第一初始走线层位于所述第一目标区域(m)的第三材料层(a3)以及刻蚀所述初始有机膜层之后,所述像素界定层位于所述内缩区域的部分材料被去除。
- 根据权利要求14至18任一所述的方法,其特征在于,所述采用刻蚀工艺刻蚀所述至少一条初始电源走线的所述第一初始走线层位于所述第一目标区域(m)的第三材料层(a3)以及刻蚀所述初始有机膜层,包括:在所述第一初始走线层远离所述衬底基板(101)的一侧涂覆光刻胶;采用掩膜版对所述光刻胶进行曝光;采用显影液对所述光刻胶进行显影,以去除所述光刻胶中被曝光的部分;采用刻蚀工艺去除所述第一初始走线层位于所述第一目标区域(m)的第三材料层(a3)以及所述初始有机膜层未被光刻胶保护的部分;去除剩余的光刻胶。
- 根据权利要求19所述的方法,其特征在于,所述掩膜版具有多个掩膜开口,每个掩膜开口在所述衬底基板(101)上的正投影与所述通槽区域(105a)部分重叠,且和所述初始电源走线的第一目标区域(m)部分重叠;所述掩膜开口具有沿第一方向(X)延伸的第一掩膜边界,所述第一掩膜边界用于形成刻蚀后的所述第三材料层(a3)的第三边界(a31),且所述第一掩膜边界在所述衬底基板(101)上的正投影位于所述第一材料层(a1)在所述衬底基板(101)上的正投影内,所述第一掩膜边界与所述第一边界(a11)在第二方向(Y)上的距离大于3微米,所述第二方向(Y)和所述第一方向(X)垂直。
- 根据权利要求20所述的方法,其特征在于,所述第一掩膜边界还用于形成刻蚀后的所述第一有机膜层(105)的凹槽区域(105b)的第一凹槽边界(105b1),所述第一凹槽边界(105b1)靠近所述第一走线层且沿所述第一方向(X)延伸;所述第一有机膜层(105)位于所述凹槽区域(105b)的厚度,小于除所述凹槽区域(105b)之外的其他区域的厚度,所述凹槽区域(105b)用于覆盖所述电源走线(104)的第二目标区域(n),所述第二目标区域(n)和所述第一目标区域(m)在所述第一方向(X)上相邻。
- 根据权利要求20或21所述的方法,其特征在于,所述掩膜开口还具有 沿第二方向(Y)延伸的第二掩膜边界,所述通槽区域(105a)位于所述第二掩膜边界的一侧,所述第二掩膜边界用于形成所述第一有机膜层(105)的凹槽区域(105b)远离所述通槽区域(105a)且沿所述第二方向(Y)延伸的第二凹槽边界(105b2);所述凹槽区域(105b)还具有和所述通槽区域(105a)相邻且沿所述第二方向(Y)延伸的第三凹槽边界(105b3);其中,所述第二凹槽边界(105b2)和所述第三凹槽边界(105b3)在所述第一方向(X)上的距离大于3微米。
- 根据权利要求14至22任一所述的方法,其特征在于,形成所述电源走线(104)包括:在所述衬底基板(101)的一侧形成第一走线层;或者,形成所述电源走线(104)包括:在所述衬底基板(101)的一侧依次形成第二走线层,第二有机膜层以及所述第一走线层,所述第一走线层和所述第二走线层通过所述第二有机膜层中的开口连接;又或者,形成所述电源走线(104)包括:在所述衬底基板(101)的一侧依次形成第三走线层,第三有机膜层,第二走线层,第二有机膜层以及所述第一走线层,所述第一走线层和所述第二走线层通过所述第二有机膜层中的开口连接,所述第二走线层和所述第三走线层通过所述第三有机膜层中的开口连接;其中,所述通槽区域(105a)用于露出所述第一走线层的第一目标区域(m)。
- 一种显示装置,其特征在于,所述显示装置包括供电组件以及如权利要求1至13任一所述的显示面板(10);其中,所述供电组件用于为显示面板(10)供电。
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20080284331A1 (en) * | 2007-05-17 | 2008-11-20 | Seiko Epson Corporation | Electro-luminescence device and method of manufacturing electro-luminescence device |
| CN106783926A (zh) * | 2016-12-28 | 2017-05-31 | 上海天马有机发光显示技术有限公司 | 一种显示面板及其装置 |
| CN113838898A (zh) * | 2021-09-16 | 2021-12-24 | 昆山国显光电有限公司 | 显示面板以及显示装置 |
| CN114171551A (zh) * | 2020-09-10 | 2022-03-11 | 京东方科技集团股份有限公司 | 显示基板及显示装置 |
| CN114400292A (zh) * | 2022-01-14 | 2022-04-26 | 京东方科技集团股份有限公司 | 显示面板及其制备方法、显示装置 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080284331A1 (en) * | 2007-05-17 | 2008-11-20 | Seiko Epson Corporation | Electro-luminescence device and method of manufacturing electro-luminescence device |
| CN106783926A (zh) * | 2016-12-28 | 2017-05-31 | 上海天马有机发光显示技术有限公司 | 一种显示面板及其装置 |
| CN114171551A (zh) * | 2020-09-10 | 2022-03-11 | 京东方科技集团股份有限公司 | 显示基板及显示装置 |
| CN113838898A (zh) * | 2021-09-16 | 2021-12-24 | 昆山国显光电有限公司 | 显示面板以及显示装置 |
| CN114400292A (zh) * | 2022-01-14 | 2022-04-26 | 京东方科技集团股份有限公司 | 显示面板及其制备方法、显示装置 |
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