CN116709868B - Display panel, preparation method thereof and display device - Google Patents

Display panel, preparation method thereof and display device Download PDF

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Publication number
CN116709868B
CN116709868B CN202310944318.4A CN202310944318A CN116709868B CN 116709868 B CN116709868 B CN 116709868B CN 202310944318 A CN202310944318 A CN 202310944318A CN 116709868 B CN116709868 B CN 116709868B
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China
Prior art keywords
light
array film
film layer
display panel
transparent
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CN202310944318.4A
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CN116709868A (en
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颜志敏
高思明
刘俊伟
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Beijing Visionox Technology Co Ltd
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Beijing Visionox Technology Co Ltd
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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
    • H10K59/805—Electrodes
    • H10K59/8051—Anodes
    • 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
    • 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
    • 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
    • H10K59/805—Electrodes
    • H10K59/8052—Cathodes

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

The application provides a display panel, a preparation method thereof and a display device, and relates to the technical field of display. The display panel comprises an array film layer and a plurality of light-emitting units which are arranged on the array film layer at intervals; the light-emitting unit comprises an anode structure, a light-emitting structure and a cathode structure, and the anode structure is arranged on the array film layer; the light-emitting structure comprises a light-emitting part and an extension part electrically connected with the light-emitting part, the light-emitting part covers the surface of the anode structure, which is away from the array film layer, and the extension part covers the array film layer; part of the cathode structure covers the surface of the light-emitting part, which is away from the anode structure, and the other part of the cathode structure covers the surface of the extending part, which is away from the array film layer; transparent wires are arranged between two adjacent light-emitting units and are arranged on the array film layer; the first end of the transparent wire is electrically connected to the cathode structure of one of the light emitting units, and the second end of the transparent wire is electrically connected to the cathode structure of the other light emitting unit. The application can improve the light transmittance of the wiring and improve the display effect of the display panel.

Description

Display panel, preparation method thereof and display device
Technical Field
The application relates to the field of display technology, in particular to a display panel, a preparation method thereof and a display device.
Background
An Organic Light-Emitting Diode (OLED) display panel has characteristics of self-luminescence, fast response speed, low power consumption, and the like, and is widely used in display devices.
The display panel comprises an array film layer and a plurality of light-emitting units arranged on the array film layer at intervals, wherein each light-emitting unit comprises an anode structure, a light-emitting structure and a cathode structure which are arranged in a stacked mode, the light-emitting side of each light-emitting structure faces to the cathode structure, light rays emitted by each light-emitting structure are transmitted outwards through the cathode structure, and the cathode structures of two adjacent light-emitting structures are electrically connected through a wiring; however, the transmittance of the trace is low, and the display effect of the display panel is poor.
Disclosure of Invention
The embodiment of the application provides a display panel, a preparation method thereof and a display device, which are used for solving the problems of low light transmittance of wiring and poor display effect of the display panel.
A first aspect of an embodiment of the present application provides a display panel, including an array film layer, and a plurality of light emitting units disposed at intervals on the array film layer;
the light-emitting unit comprises an anode structure, a light-emitting structure and a cathode structure, and the anode structure is arranged on the array film layer; the light-emitting structure comprises a light-emitting part and an extension part electrically connected with the light-emitting part, the light-emitting part covers the surface of the anode structure, which is away from the array film layer, and the extension part covers the array film layer; a part of the cathode structure covers the surface of the light emitting part, which faces away from the anode structure, and another part of the cathode structure covers the surface of the extending part, which faces away from the array film layer;
Transparent wires are arranged between two adjacent light-emitting units and are attached to the array film layer; between two adjacent light emitting units, a first end of the transparent wire is electrically connected to the cathode structure of one of the light emitting units, and a second end of the transparent wire is electrically connected to the cathode structure of the other light emitting unit.
By adopting the technical scheme, when the display panel is manufactured, the anode structure and the transparent wiring can be formed on the surface of the array film layer, then the light-emitting structure is formed on the surface of the array film layer, the light-emitting structure comprises the light-emitting part and the extending part electrically connected with the light-emitting part, the light-emitting part covers the surface of the anode structure, which is away from the array film layer, and the extending part covers the array film layer; then forming a cathode structure on the surface of the light-emitting structure, which is away from the array film layer, so that part of the cathode structure covers the surface of the light-emitting part, which is away from the anode structure; so that the anode structure, the light-emitting structure and the cathode structure form a light-emitting unit, and the cathode structure, the light-emitting part and the anode structure mutually cooperate to emit light;
the other part of the cathode structure covers the surface of the extending part, which is far away from the array film layer, the cathode structure is electrically connected with the transparent wiring, in the two adjacent light-emitting units, the first end of the transparent wiring is electrically connected with the cathode structure of one light-emitting unit, the second end of the transparent wiring is electrically connected with the cathode structure of the other light-emitting unit, so that the two adjacent light-emitting units are electrically connected through the transparent wiring, the light transmittance of the wiring is improved, and the display effect of the display panel is improved.
In some possible embodiments, the thickness of the transparent trace is greater than the thickness of the extension along the thickness direction of the display panel;
and between two adjacent light-emitting units, the first end of the transparent wire is connected with the extending part of one light-emitting unit, and the second end of the transparent wire is connected with the extending part of the other light-emitting unit.
In some possible embodiments, the anode structure and the transparent trace are arranged in the same layer, and the thickness of the transparent trace is equal to the thickness of the anode structure along the thickness direction of the display panel;
preferably, the anode structure and the transparent trace are configured to: and forming an anode structure foundation on the surface of the array film layer, removing part of the anode structure foundation, and forming the anode structure and the transparent wiring by the rest part of the anode structure foundation.
In some possible embodiments, the array film layer is provided with a plurality of conducting members, each conducting member is arranged in a one-to-one correspondence with each light emitting unit, and the conducting member is close to the transparent wire relative to the corresponding anode structure; the surface of the conducting piece, which faces away from the array film layer, is connected with the extension part;
The thickness of the conducting piece is larger than that of the extending part along the thickness direction of the display panel; in the direction from the anode structure to the transparent wire, a gap is formed between the conducting member and the transparent wire, the gap accommodates part of the extending portion and part of the cathode structure, a first end of the cathode structure in the gap is electrically connected with the transparent wire, and a second end of the cathode structure in the gap is electrically connected with the conducting member.
Preferably, the conducting member, the transparent wiring and the anode structure are all arranged on the same layer, and the thickness of the conducting member, the thickness of the transparent wiring and the thickness of the anode structure are all arranged in the same direction along the thickness of the display panel.
In some possible embodiments, the material of the transparent trace is provided as at least one of indium tin oxide and indium zinc oxide;
and/or, along the thickness direction of the display panel, the thickness of the transparent trace is greater than or equal to 100 nanometers and less than or equal to 300 nanometers.
In some possible embodiments, the light emitting unit further includes a pixel defining structure, and the pixel defining structure is connected to the anode structure in a plane of the array film layer;
The surface of the pixel definition structure facing the array film layer is attached to the array film layer, and the surface of the pixel definition structure facing away from the array film layer is connected with the surface of the extension part facing away from the cathode structure.
Preferably, the pixel defining structure is an annular pixel defining structure, the annular pixel defining structure is annularly arranged on the outer side of the anode structure, and part of the annular pixel defining structure covers the surface of the anode structure, which is away from the array film layer.
In some possible embodiments, the array film layer includes a mask layer, and an orthographic projection of the mask layer in a plane of the cathode structure along a thickness direction of the display panel covers the cathode structure;
preferably, the mask layer is further provided with an opening, and the opening is correspondingly arranged on the transparent wiring along the thickness direction of the display panel;
preferably, the display panel is configured to: and irradiating the display panel on one side of the mask layer, which is away from the cathode structure, by laser so as to ashe the display panel, wherein the propagation direction of the laser is parallel to the thickness direction of the display panel.
A second aspect of an embodiment of the present application provides a method for manufacturing a display panel, including:
providing an array film layer;
forming a plurality of light emitting units which are arranged on the array film layer at intervals; the light-emitting unit comprises an anode structure, a light-emitting structure and a cathode structure, and the anode structure is arranged on the array film layer; the light-emitting structure comprises a light-emitting part and an extension part electrically connected with the light-emitting part, the light-emitting part covers the surface of the anode structure, which is away from the array film layer, and the extension part covers the array film layer; a part of the cathode structure covers the surface of the light emitting part, which faces away from the anode structure, and another part of the cathode structure covers the surface of the extending part, which faces away from the array film layer;
forming transparent wiring; the transparent wire is attached to the array film layer, a first end of the transparent wire is electrically connected to the cathode structure of one of the light-emitting units between two adjacent light-emitting units, and a second end of the transparent wire is electrically connected to the cathode structure of the other light-emitting unit.
In some possible embodiments, forming the anode structure and the transparent trace includes:
Forming an anode structure foundation, wherein the anode structure foundation covers the array film layer;
removing part of the anode structure foundation, and forming the anode structure and the transparent wiring by the rest part of the anode structure foundation;
and/or forming the anode structure and the transparent trace, comprising:
forming an anode structure foundation, wherein the anode structure foundation covers the array film layer;
removing part of the anode structure foundation, and forming the anode structure, the transparent wiring and a plurality of conducting pieces by the rest part of the anode structure foundation; the conducting pieces are arranged in one-to-one correspondence with the light emitting units, and the conducting pieces are close to the transparent wiring relative to the corresponding anode structures; the surface of the conducting piece, which is away from the array film layer, is connected with the extension part.
A third aspect of the embodiments of the present application provides a display device, which includes the above display panel.
The embodiment of the present application provides a display device, which includes any one of the above display panels, so that the display device includes the advantages of any one of the above display panels, and the detailed description thereof will be omitted herein.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a display panel according to another embodiment of the present application.
Fig. 3 is a schematic structural diagram of a light emitting unit according to an embodiment of the present application.
Fig. 4 is a schematic structural diagram of a transparent trace according to an embodiment of the present application.
Fig. 5 is a schematic structural diagram of an anode structure foundation formed on the surface of an array film layer according to an embodiment of the present application.
Fig. 6 is a schematic structural diagram of forming a pixel definition structure on the surface of an array film according to an embodiment of the present application.
Fig. 7 is a schematic structural diagram of a light emitting structure formed on the surface of an array film according to an embodiment of the present application.
Fig. 8 is a schematic structural diagram of a cathode structure foundation formed on the surface of an array film layer according to an embodiment of the present application.
Fig. 9 is a schematic flow chart of a method for manufacturing a display panel according to an embodiment of the application.
Reference numerals illustrate:
100. an array film layer;
110. a mask layer; 111. an opening;
200. A light emitting unit;
210. an anode structure; 211. an anode structure foundation; 220. a light emitting structure; 221. a light emitting section; 222. an extension; 223. a light emitting structure foundation; 230. a cathode structure; 231. a cathode structure foundation; 240. a pixel definition structure;
300. transparent wiring;
400. a conductive member;
410. a gap.
Specific embodiments of the present application have been shown by way of the above drawings and will be described in more detail below. The drawings and the written description are not intended to limit the scope of the inventive concepts in any way, but rather to illustrate the inventive concepts to those skilled in the art by reference to the specific embodiments.
Detailed Description
As described in the background art, in the related art, the transmittance of the wiring is low, the display effect of the display panel is poor, and the applicant has found that the reason for this problem is that the display panel includes an array film layer, and a plurality of light emitting units disposed at intervals on the array film layer, the light emitting units include an anode structure, a light emitting structure and a cathode structure that are stacked, the light emitting side of the light emitting structure faces the cathode structure, and light emitted by the light emitting structure is transmitted outwards through the cathode structure. And a wiring is further arranged between two adjacent light emitting units, the wiring is arranged on the cathode structure in the same layer, the first end of the wiring is electrically connected with one cathode structure, and the second end of the wiring is electrically connected with the other cathode structure, so that the cathode structures of the two adjacent light emitting units are electrically connected through the wiring.
When the light-emitting structure forms a cathode structure and a wiring, a cathode structure foundation is usually required to be formed on the surface of the light-emitting structure, which is away from the array film layer, and then the cathode structure foundation is patterned by utilizing the mask layer of the array film layer so as to remove part of the cathode structure foundation; the mask layer is provided with an opening, the mask layer is correspondingly arranged on the cathode structure and the wiring, when partial cathode structure foundations corresponding to the opening of the mask plate are removed through laser, the mask layer can protect partial cathode structure foundations corresponding to the cathode structure and the wiring, so that partial cathode structure foundations form the cathode structure and the wiring, and the cathode structures of two adjacent light emitting units are electrically connected through the wiring.
However, since the portion of the mask layer is correspondingly disposed on the trace and the cathode structure are disposed on the same layer, a portion of the mask layer exists between two adjacent light emitting units, so that light emitted by the light emitting structure is blocked, and the trace and the cathode structure are formed synchronously, so that the light transmittance of the trace is low, and the display effect of the display panel is poor.
In order to solve the technical problems, the embodiment of the application provides a display panel, a preparation method thereof and a display device, when the display panel is prepared, an anode structure and a transparent wiring can be formed on the surface of an array film layer, then a light-emitting structure is formed on the surface of the array film layer, the light-emitting structure comprises a light-emitting part and an extending part electrically connected with the light-emitting part, the light-emitting part covers the surface of the anode structure, which is away from the array film layer, and the extending part covers the array film layer; then forming a cathode structure on the surface of the light-emitting structure, which is away from the array film layer, so that part of the cathode structure covers the surface of the light-emitting part, which is away from the anode structure; so that the anode structure, the light-emitting structure and the cathode structure form a light-emitting unit, and the cathode structure, the light-emitting part and the anode structure mutually cooperate to emit light;
The other part of the cathode structure covers the surface of the extending part, which is far away from the array film layer, the cathode structure is electrically connected with the transparent wiring, in the adjacent two light-emitting units, the first end of the transparent wiring is electrically connected with the cathode structure of one light-emitting unit, the second end of the transparent wiring is electrically connected with the cathode structure of the other light-emitting unit, so that the cathode structures of the adjacent two light-emitting units are electrically connected through the transparent wiring, a part of mask layer is not required to be arranged between the adjacent two light-emitting units, and the light transmittance of the wiring is improved by setting the wiring as the transparent wiring, and the display effect of the display panel is improved.
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the application. Rather, they are merely examples of apparatus and methods consistent with aspects of the application as detailed in the accompanying claims.
The following describes the technical scheme of the present application and how the technical scheme of the present application solves the above technical problems in detail with specific embodiments. The following embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments. Embodiments of the present application will be described below with reference to the accompanying drawings.
Referring to fig. 1 to 4, an embodiment of the present application provides a display panel, which includes an array film layer 100, and a plurality of light emitting units 200 disposed on the array film layer 100 at intervals; the light emitting unit 200 includes an anode structure 210, a light emitting structure 220, and a cathode structure 230, wherein the anode structure 210 is disposed on the array film 100; the light emitting structure 220 includes a light emitting portion 221 and an extension portion 222 electrically connected to the light emitting portion 221, the light emitting portion 221 covers a surface of the anode structure 210 facing away from the array film 100, and the extension portion 222 covers the array film 100; a portion of the cathode structure 230 covers a surface of the light emitting portion 221 facing away from the anode structure 210, a portion of the cathode structure 230 covering the light emitting portion 221, the light emitting portion 221 and the anode structure 210 emit light in cooperation with each other, and another portion of the cathode structure 230 covers a surface of the extension 222 facing away from the array film layer 100.
The transparent wires 300 are disposed between two adjacent light emitting units 200, and the transparent wires 300 are attached to the array film 100; between two adjacent light emitting units 200, a first end of the transparent trace 300 is electrically connected to the cathode structure 230 of one of the light emitting units 200, and a second end of the transparent trace 300 is electrically connected to the cathode structure 230 of the other light emitting unit 200, such that the cathode structures 230 of the two adjacent light emitting units 200 are electrically connected through the transparent trace 300.
In some possible embodiments, the light emitting unit 200 further includes a pixel defining structure 240 (Pixel Define Layer, abbreviated as PDL), in the plane of the light emitting unit 200, the pixel defining structure 240 is annular, the pixel defining structure 240 is disposed as an annular pixel defining structure 240, the anode structure 210 is disposed on the inner side of the annular pixel defining structure 240, the transparent trace 300 is disposed on the outer side of the annular pixel defining structure 240, and the pixel defining structure 240 is disposed at intervals from the transparent trace 300 along the direction from inside to outside of the pixel defining structure 240;
the first surface of the pixel defining structure 240 is disposed on the array film layer 100, and the second surface of the pixel defining structure 240 is connected to the surface of the extension 222 facing away from the cathode structure 230; illustratively, the cross section of the pixel defining structure 240 is arranged in a trapezoid with a plane parallel to the thickness direction of the display panel as a cross section, and the cross-sectional area of the pixel defining structure 240 gradually decreases in a direction away from the array film layer 100.
Illustratively, a portion of the pixel defining structure 240 covers a surface of the anode structure 210 facing away from the array membrane layer 100; after forming the plurality of anode structures 210 on the surface of the array film 100, a plurality of pixel defining structures 240 may be formed on the surface of the array film 100, where each pixel defining structure 240 is disposed in one-to-one correspondence with each anode structure 210, and the inner sides of the pixel defining structures 240 cover the corresponding anode structures 210, so that the plurality of anode structures 210 are disposed independently of each other through the plurality of pixel defining structures 240.
It is easy to understand that the anode structure 210 is electrically connected to the array film 100, so that the anode structure 210 is controlled by the array film 100, and the light emitting portion 221 of the light emitting structure 220 is correspondingly disposed inside the pixel defining structure 240 in the plane where the light emitting unit 200 is located, and when the display panel is in an operating state, the cathode structure 230, the light emitting portion 221 and the anode structure 210 located inside the pixel defining structure 240 mutually cooperate to emit light, so as to implement the light emitting process of the light emitting unit 200.
Referring to fig. 3 and 4, in some possible embodiments, in a thickness direction of the display panel, a thickness of the transparent wire 300 is greater than a thickness of the extension 222, and the thickness of the transparent wire 300 is less than a sum of the thickness of the extension 222 and the thickness of the light emitting structure 220 to increase a possibility that the transparent wire 300 is electrically connected with the cathode structure 230; between two adjacent light emitting units 200, a first end of the transparent trace 300 is connected to the extension 222 of one of the light emitting units 200, and a second end of the transparent trace 300 is connected to the extension 222 of the other light emitting unit 200.
Referring to fig. 5 to fig. 8, fig. 5 is a schematic structural diagram of an anode structure base 211 formed on a surface of an array film layer 100 according to an embodiment of the present application, where a portion indicated by a dotted line in the anode structure base 211 in fig. 5 is a portion of the anode structure base 211 where an anode structure 210 is not formed; fig. 6 is a schematic structural diagram of forming a pixel defining structure 240 on the surface of the array film 100 according to an embodiment of the present application; fig. 7 is a schematic structural diagram of a light emitting structure foundation 223 formed on the surface of an array film layer 210 according to an embodiment of the present application; fig. 8 is a schematic structural diagram of a cathode structure foundation 231 formed on the surface of the array film layer 100 according to an embodiment of the present application, and a portion indicated by a dotted line in the cathode structure foundation 231 in fig. 8 is a portion of the cathode structure foundation 231 where the cathode structure 230 is not formed.
For example, when preparing a display panel, a plurality of anode structures 210 may be formed on the surface of the array film layer 100, and transparent wirings 300 for connecting adjacent two anode structures 210; then forming a ring-shaped pixel defining structure 240 on the surface of the array film layer 100, such that the inner side of the pixel defining structure 240 covers the anode structure 210; then, a light emitting structure 220 is formed on the surface of the array film 100, where the light emitting structure 220 includes a light emitting portion 221 and an extension portion 222 electrically connected to the light emitting portion 221, the light emitting portion 221 covers the surface of the anode structure 210 facing away from the array film 100, a portion of the extension portion 222 covers the surface of the pixel defining structure 240 facing away from the array film 100, another portion of the extension portion 222 covers the array film 100, and one end of the extension portion 222 facing away from the light emitting portion 221 is connected to the transparent trace 300.
In the thickness direction of the display panel, the thickness of the extension portion 222 is smaller than that of the transparent trace 300, so that the surface of the transparent trace 300 facing away from the array film 100 is far away from the array film 100 relative to the surface of the light emitting portion 221.
Referring to fig. 7, a cathode structure 230 is then formed on the surface of the light emitting structure 220 facing away from the array film layer 100, such that a portion of the cathode structure 230 covers the surface of the light emitting portion 221 facing away from the anode structure 210, and a portion of the cathode structure 230 covers the surface of the extension 222 facing away from the array film layer 100, and in the direction of the light emitting units 200 from inside to outside, an outer edge of the cathode structure 230 covers the extension 222, and the outer edge of the cathode structure 230 is electrically connected to the transparent trace 300, so that the cathode structures 230 of two adjacent light emitting units 200 are electrically connected through the transparent trace 300.
It should be noted that when the light emitting structure 220 is formed on the array film 100, the light emitting structure base 223 is formed on the surface of the array film 100, and along the thickness direction of the display panel, the orthographic projection of the light emitting structure base 223 on the array film 100 is overlapped with the light emitting structure base 100, and the transparent trace 300 is formed on the surface of the array film 100, and the thickness of the transparent trace 300 is greater than that of the light emitting structure base 223, so that a part of the light emitting structure base 223 covered on the transparent trace 300 is separated from other parts of the light emitting structure base 223, and a part of the light emitting structure base 223 not covered on the transparent trace 300 forms the light emitting structure 220.
Referring to fig. 8, when forming the cathode structure 230 on the surface of the light emitting structure 220 facing away from the array film 100, a cathode structure foundation 231 is formed on the surface of the light emitting structure foundation 223 facing away from the array film 100, and along the thickness direction of the display panel, the cathode structure foundation 231 is overlapped and disposed on the array film 100 in the orthographic projection of the array film 100, and a part of the cathode structure foundation 231 overlapped and disposed on the transparent trace 300 and other parts of the cathode structure foundations 231 are formed with a break-make, and a part of the cathode structure foundation 231 not overlapped and disposed on the transparent trace 300 forms the cathode structure 230.
In some possible embodiments, the array film 100 includes a mask layer 110, where the mask layer 110 may be made of molybdenum (Mo) to block the laser light through the mask layer 110. In the thickness direction of the display panel, in the plane of the cathode structure 230, the orthographic projection of the mask layer 110 covers the cathode structure 230 to protect the cathode structure 230 through the mask layer 110; the mask layer 110 is further provided with an opening 111, and the opening 111 is correspondingly disposed on the transparent trace 300 along the thickness direction of the display panel.
Illustratively, after forming the cathode structure base 231 at a surface of the light emitting structure 220 facing away from the array film layer 100, the cathode structure base 231 may be patterned through the mask layer 110 positioned in the array film layer 100 to remove a portion of the cathode structure base 231; the mask layer 110 is correspondingly disposed on the cathode structure 230, and the partial opening 111 of the mask layer 110 is correspondingly disposed on the transparent trace 300.
For example, a part of the cathode structure foundation 231 may be removed by laser, and the mask layer 110 corresponding to the cathode structure 230 may protect the part of the cathode structure foundation 231, so that the laser may irradiate the part of the cathode structure foundation 231 overlapping the transparent trace 300 through the opening 111 of the mask layer 110, thereby removing the part of the cathode structure foundation 231 overlapping the transparent trace 300, and forming the cathode structure 230 by the rest of the cathode structure foundation 231.
And, the display surface may be further configured to: the display panel is irradiated on one side of the mask layer 110 away from the cathode structure 230 by laser to ash the display panel, and the propagation direction of the laser is parallel to the thickness direction of the display panel, so that the light transmittance of the display panel is improved and the display effect of the display panel is improved by the laser ashing of the display panel.
When the display panel is irradiated by the laser, the mask layer 110 is correspondingly disposed on the cathode structure 230, so as to protect the cathode structure 230 through the mask layer 110, and the opening 111 of the mask layer 110 is correspondingly disposed on the transparent trace 300, thereby reducing the possibility of damage of the cathode structure 230 during the ashing process of the display panel.
Referring to fig. 5, in some possible embodiments, the anode structure 210 and the transparent wire 300 are disposed in the same layer, and the thickness of the transparent wire 300 is equal to the thickness of the anode structure 210 in the thickness direction of the display panel; the anode structure 210 and transparent trace 300 are configured to: an anode structure foundation 221 is formed on the surface of the array film layer 100, and a part of the anode structure foundation 221 is removed, so that the anode structure 210 and the transparent wire 300 are formed by the rest of the anode structure foundation 221, so that the anode structure 210 and the transparent wire 300 are formed at one time, and the forming process of the anode structure 210 and the transparent wire 300 is more convenient.
Illustratively, when forming the plurality of anode structures 210 on the array film 100, an anode structure foundation 221 is formed on the surface of the array film 100, and then the anode structure foundation 221 is patterned through the mask layer 110 in the array film 100 to remove a portion of the anode structure foundation 221 on the surface of the array film 100, so that the remaining portion of the anode structure foundation 221 forms the anode structure 210 and the transparent trace 300.
It is to be readily understood that after forming the plurality of anode structures 210 on the surface of the array film 100, the transparent traces 300 may be formed on the surface of the array film 100; alternatively, after the transparent trace 300 is formed on the surface of the array film 100, a plurality of anode structures 210 may be formed on the surface of the array film 100, so that the transparent trace 300 and the anode structures 210 are arranged in the same layer.
Illustratively, the transparent trace 300 is made of at least one of Indium Tin Oxide (ITO) and Indium Zinc Oxide (IZO); and/or, in the thickness direction of the display panel, the thickness of the transparent wire 300 is greater than or equal to 100 nanometers and less than or equal to 300 nanometers, for example, the thickness of the transparent wire 300 may be set to one of 100 nanometers, 150 nanometers, 200 nanometers, 250 nanometers, and 300 nanometers.
When the anode structure base 221 is patterned so that the anode structure 210 and the transparent trace 300 are formed by the rest of the anode structure base 221, the transparent trace 300 is made of the same material as the anode structure 210; when the anode structure 210 and the transparent trace 300 are formed on the surface of the array film 100, the material of the transparent trace 300 may be the same as the material of the anode structure 210, or the material of the transparent trace 300 may be different from the material of the anode structure 210.
Referring to fig. 1 to fig. 4, in some possible embodiments, the array film layer 100 is provided with a plurality of conductive elements 400, each conductive element 400 is disposed on each light emitting unit 200 in a one-to-one correspondence, and the conductive element 400 is close to the transparent trace 300 relative to the corresponding light emitting portion 221; and the conductive member 400 faces away from the surface connection extension 222 of the array film 100.
The thickness of the conductive member 400 is greater than the thickness of the extension portion 222 along the thickness direction of the display panel, and the thickness of the conductive member 400 is less than the thickness of the cathode structure 230; in a direction from the anode structure 210 to the transparent wire 300, a gap 410 is formed between the conductive member 400 and the transparent wire 300, the gap 410 accommodates a portion of the extension portion 222 and a portion of the cathode structure 230, a first end of the cathode structure 230 located in the gap 410 is electrically connected to the transparent wire 300, and a second end of the cathode structure 230 located in the gap 410 is electrically connected to the conductive member 400, so that the cathode structure 230 is disposed in parallel to the conductive member 400, thereby reducing a resistance of the cathode structure 230.
As can be easily understood, referring to fig. 7 and 8, when forming the light emitting structure 220 and the cathode structure 230 on the surface of the array film 100, the light emitting structure foundation 223 is formed on the surface of the array film 100, the portion of the light emitting structure foundation 223 covers the surface of the conductive member 400 facing away from the array film 100, the portion of the light emitting structure foundation 223 is disposed in the gap 410, a step is formed between the portion of the light emitting structure foundation 223 covering the conductive member 400 and the portion of the light emitting structure foundation 223 disposed in the gap 410, and the portion of the light emitting structure foundation 223 covering the conductive member 400 and the portion of the light emitting structure foundation 223 disposed in the gap 410 form the extension portion 222.
When the cathode structure 230 is formed on the surface of the light-emitting structure 220 facing away from the array film 100, the cathode structure foundation 231 is formed on the surface of the light-emitting structure foundation 223 facing away from the array film 100, the orthographic projection of the cathode structure foundation 231 is overlapped with the conducting member 400, the cathode structure foundation 231 is partially disposed in the gap 410, and the cathode structure foundation 231 disposed in the gap 410 is electrically connected with the conducting member 400, so as to be connected with the conducting member in parallel, and reduce the resistance of the cathode structure foundation 231.
Illustratively, the conductive element 400, the transparent trace 300, and the anode structure 210 are all disposed in the same layer, and the conductive element 400 may be made of one of indium tin oxide and zinc oxide. Along the thickness direction of the display panel, the thickness of the conductive member 400, the thickness of the transparent trace 300 and the thickness of the anode structure 210 are all the same; the thickness of the via 400 is set to be greater than or equal to 100 nanometers and less than or equal to 300 nanometers, for example, the thickness of the via 400 may be set to one of 100 nanometers, 150 nanometers, 200 nanometers, 250 nanometers, and 300 nanometers.
Referring to fig. 5, the conductive member 400, the transparent trace 300, and the anode structure 210 are configured to: an anode structure foundation 221 is formed on the surface of the array film 100, and then the anode structure foundation 221 is patterned through the mask layer 110 in the array film 100 to remove a portion of the anode structure foundation 221 located on the surface of the array film 100, so that a via 400, an anode structure 210 and a transparent trace 300 are formed on the remaining portion of the anode structure foundation 221, and a gap 410 is formed between the via 400 and the transparent trace 300.
It is to be easily understood that after the plurality of anode structures 210 are formed on the surface of the array film 100, the transparent traces 300 and the vias 400 may be formed on the surface of the array film 100; alternatively, after the transparent trace 300 and the via 400 are formed on the surface of the array film 100, a plurality of anode structures 210 may be formed on the surface of the array film 100, so that the transparent trace 300, the via 400 and the anode structures 210 are arranged in the same layer.
In summary, in the embodiment of the present application, when the display panel is manufactured, the anode structure 210 and the transparent trace 300 may be formed on the surface of the array film 100, and then the light emitting structure 220 is formed on the surface of the array film 100, where the light emitting structure 220 includes the light emitting portion 221 and the extension portion 222 electrically connected to the light emitting portion 221, the light emitting portion 221 covers the surface of the anode structure 210 facing away from the array film 100, and the extension portion 222 covers the array film 100; subsequently, forming a cathode structure 230 on the surface of the light emitting structure 220 facing away from the array film layer 100, such that a portion of the cathode structure 230 covers the surface of the light emitting portion 221 facing away from the anode structure 210; so that the anode structure 210, the light emitting structure 220, and the cathode structure 230 form the light emitting unit 200, and the cathode structure 230, the light emitting part 221, and the anode structure 210 emit light in cooperation with each other;
In addition, another portion of the cathode structure 230 covers the surface of the extension 222 facing away from the array film 100, in the two adjacent light emitting units 200, the first end of the transparent trace 300 is electrically connected to the cathode structure 230 of one of the light emitting units 200, and the second end of the transparent trace 300 is electrically connected to the cathode structure 230 of the other light emitting unit 200, so that the cathode structures 230 of the two adjacent light emitting units 200 are electrically connected through the transparent trace 300, thereby eliminating the need for providing the mask layer 110 between the two adjacent light emitting units 200, and improving the transmittance of the trace and the display effect of the display panel by setting the trace as the transparent trace 300.
The embodiment of the application also provides a display device which comprises the display panel. For example, the display device may be configured as a mobile terminal such as a mobile phone, a tablet computer, or the like.
The embodiment of the present application provides a display device, and since the display device includes the display panel according to any of the foregoing embodiments, the display device includes the advantages of the display panel according to any of the foregoing embodiments, and the detailed description thereof will be omitted herein.
Referring to fig. 9, an embodiment of the present application further provides a method for manufacturing a display panel, including:
S101, providing an array film layer;
for example, the array film layer 100 may be used to form a structure of the light emitting unit 200, etc., and the transparency of the display panel may be improved by laser processing the array film layer 100 and the structure provided on the surface of the array film layer 100 to ash the display panel; illustratively, the array film 100 may further include a mask layer 110, where the mask layer 110 may be made of molybdenum, so as to provide a certain blocking effect to the laser light by the mask layer 110.
S102, forming a plurality of light-emitting units which are arranged on the array film layer at intervals;
in some possible embodiments, the light emitting unit 200 includes an anode structure 210, a light emitting structure 220, and a cathode structure 230, the anode structure 210 being disposed on the array film layer 100; the light emitting structure 220 includes a light emitting portion 221 and an extension portion 222 electrically connected to the light emitting portion 221, the light emitting portion 221 covers a surface of the anode structure 210 facing away from the array film 100, and the extension portion 222 covers the array film 100; a portion of the cathode structure 230 covers the surface of the light emitting portion 221 facing away from the anode structure 210, and another portion of the cathode structure 230 covers the surface of the extension 222 facing away from the array film layer 100;
the anode structure 210 is electrically connected to the array film 100 to control the anode structure 210 through the array film 100, and when the display panel is in an operating state, a portion of the cathode structure 230, the light emitting portion 221, and the anode structure 210 cooperate to emit light, thereby implementing a light emitting process of the light emitting unit 200.
S103, forming transparent wiring;
in some possible embodiments, the transparent trace 300 is attached to the array film 100, between two adjacent light emitting units 200, a first end of the transparent trace 300 is electrically connected to the cathode structure 230 of one of the light emitting units 200, and a second end of the transparent trace 300 is electrically connected to the cathode structure 230 of the other light emitting unit 200, so that the cathode structures 230 of the two adjacent light emitting units 200 are electrically connected through the transparent trace 300.
When the array film 100 forms a plurality of anode structures 210 and a plurality of transparent wires 300, the anode structure 210 foundation may be formed on the surface of the array film 100, and then the anode structure 210 foundation may be patterned by the mask layer 110 in the array film 100 to remove a portion of the anode structure 210 foundation on the surface of the array film 100, so that the remaining portion of the anode structure 210 foundation forms the anode structure 210 and the transparent wires 300, so that the anode structure 210 and the transparent wires 300 are formed at one time, and the forming process of the anode structure 210 and the transparent wires 300 is more convenient.
Alternatively, the array film layer 100 may further be provided with a plurality of conductive members 400, where the conductive members 400 are disposed in the light emitting units 200 in a one-to-one correspondence, and the conductive members 400 are close to the transparent wires 300 with respect to the corresponding light emitting portions 221; and the conductive member 400 faces away from the surface connection extension 222 of the array film 100.
When the array film 100 forms the plurality of anode structures 210 and the plurality of transparent wires 300, the anode structure 210 foundation may be formed on the surface of the array film 100, and then the anode structure 210 foundation may be patterned by the mask layer 110 in the array film 100 to remove a portion of the anode structure 210 foundation on the surface of the array film 100, so that the remaining portion of the anode structure 210 foundation forms the conductive element 400, the anode structure 210 and the transparent wires 300, and a gap 410 is formed between the conductive element 400 and the transparent wires 300, so that the anode structure 210 and the transparent wires 300 are formed at one time, and the forming process of the anode structure 210, the transparent wires 300 and the conductive element 400 is more convenient.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the terms "comprises" and "comprising," and any variations thereof, as used herein, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements that are expressly listed or inherent to such process, method, article, or apparatus.
Unless specifically stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can lead the connection between the two elements or the interaction relationship between the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims (12)

1. The display panel is characterized by comprising an array film layer and a plurality of light-emitting units which are arranged on the array film layer at intervals;
the light-emitting unit comprises an anode structure, a light-emitting structure and a cathode structure, and the anode structure is arranged on the array film layer; the light-emitting structure comprises a light-emitting part and an extension part electrically connected with the light-emitting part, the light-emitting part covers the surface of the anode structure, which is away from the array film layer, and the extension part covers the array film layer; a part of the cathode structure covers the surface of the light emitting part, which faces away from the anode structure, and another part of the cathode structure covers the surface of the extending part, which faces away from the array film layer;
Transparent wires are arranged between two adjacent light-emitting units and are attached to the array film layer; between two adjacent light emitting units, a first end of the transparent wire is electrically connected to the cathode structure of one of the light emitting units, and a second end of the transparent wire is electrically connected to the cathode structure of the other light emitting unit;
the array film layer is provided with a plurality of conducting pieces, the conducting pieces are arranged in one-to-one correspondence with the light emitting units, and the conducting pieces are close to the transparent wiring relative to the corresponding anode structures; the surface of the conducting piece, which faces away from the array film layer, is connected with the extension part;
the thickness of the conducting piece is larger than that of the extending part along the thickness direction of the display panel; in the direction from the anode structure to the transparent wire, a gap is formed between the conducting member and the transparent wire, the gap accommodates part of the extending portion and part of the cathode structure, a first end of the cathode structure in the gap is electrically connected with the transparent wire, and a second end of the cathode structure in the gap is electrically connected with the conducting member.
2. The display panel according to claim 1, wherein a thickness of the transparent wiring is greater than a thickness of the extension portion in a thickness direction of the display panel;
and between two adjacent light-emitting units, the first end of the transparent wire is connected with the extending part of one light-emitting unit, and the second end of the transparent wire is connected with the extending part of the other light-emitting unit.
3. The display panel according to claim 1, wherein the anode structure and the transparent wiring are provided in the same layer, and a thickness of the transparent wiring is equal to a thickness of the anode structure in a thickness direction of the display panel.
4. The display panel of claim 1, wherein the via, the transparent trace, and the anode structure are all arranged in the same layer, and the thickness of the via, the thickness of the transparent trace, and the thickness of the anode structure are all the same along the thickness direction of the display panel.
5. The display panel of claim 1, wherein the transparent trace material comprises at least one of indium tin oxide and indium zinc oxide;
and/or, along the thickness direction of the display panel, the thickness of the transparent trace is greater than or equal to 100 nanometers and less than or equal to 300 nanometers.
6. The display panel of any one of claims 1-5, wherein the light emitting unit further comprises a pixel defining structure, the pixel defining structure being connected to the anode structure in a plane of the array film layer;
the surface of the pixel definition structure facing the array film layer is attached to the array film layer, and the surface of the pixel definition structure facing away from the array film layer is connected with the surface of the extension part facing away from the cathode structure.
7. The display panel of claim 6, wherein the pixel defining structure is provided as an annular pixel defining structure which is disposed around the outside of the anode structure, and a portion of the annular pixel defining structure covers a surface of the anode structure facing away from the array film layer.
8. The display panel of any one of claims 1-5, wherein the array film layer comprises a mask layer, and wherein an orthographic projection of the mask layer in a plane of the cathode structure covers the cathode structure along a thickness direction of the display panel.
9. The display panel according to claim 8, wherein the mask layer is further provided with an opening, and the opening is correspondingly disposed on the transparent trace in a thickness direction of the display panel.
10. The display panel of claim 8, wherein the display panel is configured to: and irradiating the display panel on one side of the mask layer, which is away from the cathode structure, by laser so as to ashe the display panel, wherein the propagation direction of the laser is parallel to the thickness direction of the display panel.
11. A method for manufacturing a display panel, comprising:
providing an array film layer;
forming a plurality of light emitting units which are arranged on the array film layer at intervals; the light-emitting unit comprises an anode structure, a light-emitting structure and a cathode structure, and the anode structure is arranged on the array film layer; the light-emitting structure comprises a light-emitting part and an extension part electrically connected with the light-emitting part, the light-emitting part covers the surface of the anode structure, which is away from the array film layer, and the extension part covers the array film layer; a part of the cathode structure covers the surface of the light emitting part, which faces away from the anode structure, and another part of the cathode structure covers the surface of the extending part, which faces away from the array film layer;
forming transparent wiring; the transparent wire is attached to the array film layer, a first end of the transparent wire is electrically connected with the cathode structure of one of the light-emitting units between two adjacent light-emitting units, and a second end of the transparent wire is electrically connected with the cathode structure of the other light-emitting unit;
Wherein forming the anode structure and the transparent trace includes:
forming an anode structure foundation, wherein the anode structure foundation covers the array film layer;
removing part of the anode structure foundation, and forming the anode structure, the transparent wiring and a plurality of conducting pieces by the rest part of the anode structure foundation; the conducting pieces are arranged in one-to-one correspondence with the light emitting units, and the conducting pieces are close to the transparent wiring relative to the corresponding anode structures; the surface of the conducting piece, which faces away from the array film layer, is connected with the extension part; the thickness of the conducting piece is larger than that of the extending part along the thickness direction of the display panel; in the direction from the anode structure to the transparent wire, a gap is formed between the conducting member and the transparent wire, the gap accommodates part of the extending portion and part of the cathode structure, a first end of the cathode structure in the gap is electrically connected with the transparent wire, and a second end of the cathode structure in the gap is electrically connected with the conducting member.
12. A display device comprising a display panel according to any one of claims 1-10.
CN202310944318.4A 2023-07-31 2023-07-31 Display panel, preparation method thereof and display device Active CN116709868B (en)

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Citations (2)

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KR20080051220A (en) * 2006-12-05 2008-06-11 삼성전자주식회사 Display device
KR20160056487A (en) * 2014-11-11 2016-05-20 엘지디스플레이 주식회사 Large Area Transparent Organic Light Emitting Diode Display

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Publication number Priority date Publication date Assignee Title
US11816277B2 (en) * 2020-12-31 2023-11-14 Shanghai Tianma AM-OLED Co., Ltd. Touch display panel and touch display device

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Publication number Priority date Publication date Assignee Title
KR20080051220A (en) * 2006-12-05 2008-06-11 삼성전자주식회사 Display device
KR20160056487A (en) * 2014-11-11 2016-05-20 엘지디스플레이 주식회사 Large Area Transparent Organic Light Emitting Diode Display

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