CN117693232B - Display panel, preparation method of display panel and display device - Google Patents
Display panel, preparation method of display panel and display device Download PDFInfo
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- 238000002360 preparation method Methods 0.000 title abstract description 8
- 229910052751 metal Inorganic materials 0.000 claims abstract description 96
- 239000002184 metal Substances 0.000 claims abstract description 96
- 239000011368 organic material Substances 0.000 claims abstract description 39
- 239000000463 material Substances 0.000 claims abstract description 38
- 239000000758 substrate Substances 0.000 claims abstract description 23
- 229910044991 metal oxide Inorganic materials 0.000 claims description 19
- 150000004706 metal oxides Chemical class 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 17
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 7
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical group O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 230000003667 anti-reflective effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 11
- 230000015556 catabolic process Effects 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 18
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000006117 anti-reflective coating Substances 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 238000004380 ashing Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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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
- H10K59/122—Pixel-defining structures or layers, e.g. banks
-
- 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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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The application discloses a display panel, a preparation method of the display panel and a display device, and mainly relates to the technical field of display, wherein the display panel comprises a display area and a non-display area, the non-display area is arranged around the display area, the display panel further comprises a substrate, a driving layer, a first insulating layer, a metal layer and a pixel definition layer, the driving layer and the first insulating layer are arranged between the substrate and the metal layer, and the metal layer and the pixel definition layer are arranged on the first insulating layer; the material of the pixel definition layer corresponding to the non-display area is a transparent organic material; an anti-reflection layer is arranged on a layer, which is far away from the substrate, of the metal layer in the non-display area. Through the design, the light reflection of the metal layer is reduced, meanwhile, the breakdown condition between adjacent metal wires is prevented, and the display effect of the display panel is improved.
Description
Technical Field
The application relates to the technical field of display, in particular to a display panel, a preparation method of the display panel and a display device.
Background
The existing OLED display panel is provided with the polaroid, and the polaroid can prevent external light from entering the panel and then being reflected by the metal layer to enter human eyes to interfere normal picture display. But the lower transmissivity of the polaroid also causes larger loss on emergent light of the OLED display panel, reduces screen brightness and influences color expressive force, and on the other hand, the polaroid structure is unfavorable for bending, so that the polaroid has higher limit in the flexible display field.
Therefore, COE (color filter on encapsulation) display panel technology is derived on the basis, namely, color resistance and black matrix are integrated on the display panel, the function of a polaroid is replaced, and the screen brightness is greatly improved because the transmittance of emergent light is higher. However, the COE display panel cannot exhibit the same level effect as the polarizer in terms of shielding the external light reflected from the metal layer. The common practice is that carbon elements are added into the pixel definition layer to form a black pixel definition layer, so that the pixel definition layer is opaque, and in a non-display area, because wires of the metal layer are dense and current passing through the wires is large, breakdown risks exist between adjacent metal wires.
Disclosure of Invention
The application aims to provide a display panel, a preparation method of the display panel and a display device, which reduce light reflection of a metal layer, prevent breakdown between adjacent metal wires and improve display effect of the display panel.
The application discloses a display panel, which comprises a display area, a non-display area, a substrate, a driving layer, a first insulating layer, a metal layer and a pixel definition layer, wherein the non-display area is arranged around the display area; the material of the pixel definition layer corresponding to the non-display area is a transparent organic material; an anti-reflection layer is arranged on one side, away from the substrate, of the metal layer in the non-display area, and the pixel definition layer of the display area comprises a black organic material.
Optionally, the anti-reflection layer includes a metal oxide layer.
Optionally, the metal layer includes a first indium tin oxide, a silver and a second indium tin oxide, which are stacked in sequence, the metal oxide layer is alumina, and the alumina is disposed on a side of the second indium tin oxide away from the substrate.
Optionally, the pixel defining layer in the display area includes a first sub-pixel defining layer and a second sub-pixel defining layer stacked, where a material of the first sub-pixel defining layer is a black organic material, a material of the second sub-pixel defining layer is a transparent organic material, and the second sub-pixel defining layer is disposed on a side of the first sub-pixel defining layer away from the substrate.
Optionally, the first sub-pixel defining layer corresponds to a non-opening area of the display panel, the metal layer includes a plurality of anode units arranged at intervals, the anode units correspond to the opening area of the display panel, and the anode units are connected with the driving layer through via holes;
At least one channel is arranged on the first sub-pixel definition layer corresponding to the display area, and the channel completely penetrates through the first sub-pixel definition layer corresponding to the display area; the channel is filled with a luminescent material or a second sub-pixel defining layer.
Optionally, the metal layer includes bottom surface, side and the top surface of connection, the side is located the top surface with between the bottom surface, the bottom surface with first insulating layer butt, the metal oxide layer only covers the top surface of metal layer.
The application also discloses a preparation method of the display panel, the display panel comprises a display area and a non-display area, the non-display area is arranged around the display area, and the preparation method comprises the following steps:
Forming a metal layer on a substrate;
Forming an anti-reflection layer on the metal layer corresponding to the non-display region;
Forming a pixel defining layer on the metal layer;
The material of the pixel definition layer corresponding to the non-display area is a transparent organic material, and the pixel definition layer of the display area comprises a black organic material.
Optionally, the step of forming an anti-reflection layer on the metal layer corresponding to the non-display region includes:
forming a first sub-pixel defining layer on the metal layer;
removing the first sub-pixel definition layer corresponding to the non-display area, and exposing only the top surface of the metal layer corresponding to the non-display area;
An anti-reflection layer is arranged on the top surface of the metal layer corresponding to the non-display area;
The material of the first sub-pixel definition layer is a black organic material, and the anti-reflection layer is a metal oxide layer.
Optionally, the step of forming a pixel defining layer on the metal layer includes:
completely removing the first sub-pixel definition layer corresponding to the non-display area;
setting a channel on the first sub-pixel definition layer corresponding to the display area;
Forming a second sub-pixel definition layer on the metal layer corresponding to the non-display area and the first sub-pixel definition layer corresponding to the display area;
the material of the second sub-pixel definition layer is a transparent organic material, and the channel is filled with the transparent organic material.
The application also discloses a display device which comprises a driving circuit and a display panel, wherein the driving circuit is connected with the display panel.
Compared with the scheme that the black organic material of the carbon element is added in the pixel definition layer to enable the pixel definition layer to be black and used for shading, the pixel definition layer is provided with the anti-reflection layer on the metal layer, so that the pixel definition layer of the non-display area is not required to be prepared by adopting the black organic material, the light reflection phenomenon of the metal layer can be prevented, and because the material of the pixel definition layer in the non-display area is made of the transparent organic material, the breakdown risk of adjacent metal wires in the metal layer can be increased, and the display effect is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is evident that the figures in the following description are only some embodiments of the application, from which other figures can be obtained without inventive effort for a person skilled in the art. In the drawings:
FIG. 1 is a schematic diagram of a display device according to an embodiment of the application;
FIG. 2 is a schematic diagram of a display panel according to a first embodiment of the present application;
fig. 3 is a schematic plan view of a display panel according to a first embodiment of the present application;
FIG. 4 is a schematic diagram of a non-display area of a display panel according to a first embodiment of the present application;
FIG. 5 is a schematic view of a display panel according to a second embodiment of the present application;
Fig. 6 is a schematic diagram of a method for manufacturing a display panel according to a first embodiment of the present application;
FIG. 7 is a schematic diagram illustrating a process of a display panel according to a first embodiment of the application;
FIG. 8 is a schematic diagram of a method for preparing an anti-reflection layer according to a first embodiment of the present application;
FIG. 9 is a schematic diagram illustrating a process for fabricating an anti-reflective coating according to a first embodiment of the present application;
FIG. 10 is a schematic diagram of a method for fabricating a pixel defining layer according to a first embodiment of the present application;
FIG. 11 is a schematic diagram illustrating a process of forming a pixel definition layer according to a first embodiment of the present application;
FIG. 12 is a schematic diagram of a method for preparing an anti-reflection layer according to a second embodiment of the present application;
FIG. 13 is a schematic diagram illustrating a process of forming an anti-reflective coating according to a second embodiment of the present application.
10, A display device; 20. a driving circuit; 30. a display panel; 31. a display area; 32. a non-display area; 100. a substrate; 200. a driving layer, 210, an active switch, 211, a gate electrode, 212, a gate insulating layer, 213, and a semiconductor layer; 214. a source electrode; 215. a drain electrode; 300. a first insulating layer; 400. a metal layer; 410. an anode unit; 420. a bottom surface; 430. a side surface; 440. a top surface; 450. an anti-reflection layer; 500. a pixel definition layer; 510. a first subpixel defining layer; 511. a channel; 512. a pixel definition branch; 513. the first pixel defines a branch; 514. the second pixel defines a branch; 520. a second sub-pixel definition layer; 600. a light emitting layer; 700. and a cathode layer.
Detailed Description
It is to be understood that the terminology used herein, the specific structural and functional details disclosed are merely representative for the purpose of describing particular embodiments, but that the application may be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.
In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or implicitly indicating the number of technical features indicated. Thus, unless otherwise indicated, features defining "first", "second" may include one or more such features either explicitly or implicitly; the meaning of "plurality" is two or more. The terms "comprises," "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that one or more other features, integers, steps, operations, elements, components, and/or groups thereof may be present or added.
In addition, terms of the azimuth or positional relationship indicated by "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are described based on the azimuth or relative positional relationship shown in the drawings, are merely for convenience of description of the present application, and do not indicate that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present application.
Furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
The application is described in detail below with reference to the attached drawings and alternative embodiments.
Fig. 1 is a schematic diagram of a display device according to an embodiment of the present application, as shown in fig. 1, a display device 10, where the display device 10 includes a driving circuit 20 and a display panel 30, and the driving circuit 20 is connected to the display panel 30, and drives the display panel 30 to display images.
The application discloses a display panel 30, the display panel 30 is used in the display device 10, the display panel 30 is an OLED display panel 30, and the application provides the following design for the display panel 30:
example 1:
Fig. 2 is a schematic view of a display panel according to a first embodiment of the present application, and as shown in fig. 2, the present embodiment discloses a display panel 30, the display panel 30 includes a display area 31 and a non-display area 32, the non-display area 32 is disposed around the display area 31, the display panel 30 further includes a substrate 100, a driving layer 200, a first insulating layer 300, a metal layer 400, and a pixel defining layer 500, the driving layer 200 and the first insulating layer 300 are disposed between the substrate 100 and the metal layer 400, and the metal layer 400 and the pixel defining layer 500 are both disposed on the first insulating layer 300; the material of the pixel defining layer 500 corresponding to the non-display region 32 is a transparent organic material; an anti-reflection layer 450 is disposed on a side of the metal layer 400 away from the substrate 100 corresponding to the non-display region 32, and the pixel definition layer 500 of the display region 31 includes a black organic material.
The metal layer 400 is mainly used for transmitting signals corresponding to the metal wiring in the non-display area 32, the anode unit 410 is arranged in the corresponding display area 31, the light emitting layer 600 and the cathode layer 700 are arranged above the metal layer 400 in the display area 31, the anode unit 410 and the cathode layer 700 are matched to drive the light emitting layer 600 to emit light, and the light emitting layer 600 can emit monochromatic light with different colors such as red, green and blue and can emit white light corresponding to different anode units 410. And the picture display is realized by matching with color resistances of different colors.
And an anti-reflection layer 450 may be disposed over the metal layer 400 in the display area 31, which is not limited herein.
Compared with the scheme that the pixel definition layer 500 is changed into black by adding the black organic material of the carbon element into the pixel definition layer 500 and is used for shading, the anti-reflection layer 450 is arranged on the metal layer 400 in the embodiment, so that the pixel definition layer 500 of the non-display area 32 does not need to be made of the black organic material, the light reflection phenomenon of the metal layer 400 can be prevented, and the breakdown risk of adjacent metal wires in the metal layer 400 can be caused due to the fact that the material of the pixel definition layer 500 in the non-display area 32 is made of the transparent organic material, so that the display effect is improved.
The anti-reflection layer 450 may be a black material with light absorption performance, and the preferred metal oxide layer in this embodiment increases the adhesion between the anti-reflection layer 450 and the metal layer 400, so as to avoid the problem of falling caused by too large difference of material performance.
The metal layer 400 includes a first indium tin oxide, a silver and a second indium tin oxide stacked in sequence, the metal oxide layer is aluminum oxide, and the aluminum oxide is disposed on a side of the second indium tin oxide away from the substrate 100. By utilizing the characteristic that the simple substance of aluminum is easy to oxidize, the rough and uneven appearance of aluminum is rapidly oxidized by a thermal process and O2 treatment, so that the reflectivity of the area is reduced, and the situation that partial simple substance of aluminum is not oxidized and the antireflection effect is poor is avoided; and the aluminum oxide is used as the anti-reflection layer 450 to prevent the problem that the accuracy of signal transmission is affected due to the increase of resistance.
And in order to prevent the metal oxide layer from spreading laterally, the metal oxide layer is disposed only directly above the metal layer 400, that is, the metal layer 400 includes a bottom surface 420, a side surface 430 and a top surface 440, the side surface 430 is located between the top surface 440 and the bottom surface 420, the bottom surface 420 abuts against the first insulating layer 300, and the metal oxide layer only covers the top surface 440 of the metal layer 400. So that the metal oxide layer is only located on the top surface 440 of the metal layer 400 facing away from the first insulating layer 300, preventing the problem of lateral spreading of the metal oxide layer.
The driving layer 200 includes an active switch 210, the active switch 210 includes a metal layer such as a source 214, a drain 215, and a gate 211, in order to prevent external light from entering the driving layer 200 through the pixel defining layer 500 in the display area 31, and irradiating the source 214, the drain 215, and the gate 211 to generate a light reflection phenomenon, in this embodiment, the pixel defining layer 500 in the corresponding display area 31 includes a first sub-pixel defining layer 510 and a second sub-pixel defining layer 520 stacked, where the material of the first sub-pixel defining layer 510 is a black organic material, the material of the second sub-pixel defining layer 520 is a transparent organic material, and the second sub-pixel defining layer 520 is disposed on a side of the first sub-pixel defining layer 510 away from the substrate 100.
In this way, light in the display area 31 cannot reach the underlying driving layer 200 through the metal layer 400 and the pixel defining layer 500, and most of the light reflected by the metal layer 400 is absorbed by the first sub-pixel defining layer 510, so that the phenomenon of light reflection is avoided.
And the second sub-pixel defining layer 520 entirely covers the exposed top surface 440 and side surface 430 of the first sub-pixel defining layer 510, so that the first sub-pixel defining layer 510 is prevented from contacting the light emitting layer 600 when the light emitting layer 600 is disposed, resulting in impurities being mixed in the light emitting layer 600, thereby preventing the light emitting effect of the light emitting layer 600 from being affected.
Further, fig. 3 is a schematic plan view of a display panel according to a first embodiment of the present application, as shown in fig. 3, since the material of the first sub-pixel defining layer 510 is a black organic material, that is, carbon is added to the transparent organic material, so that the first sub-pixel defining layer 510 may be turned on, in order to avoid the possibility that two adjacent anode units 410 are turned on by breakdown, at least one channel 511 is disposed on the first sub-pixel defining layer 510, so that two adjacent anode units 410 are not communicated by the first sub-pixel defining layer 510, which is as follows:
The first sub-pixel defining layer 510 corresponds to a non-opening area of the display panel 30, the metal layer 400 includes a plurality of anode units 410 disposed at intervals, the anode units 410 correspond to an opening area of the display panel 30, and the anode units 410 are connected to the driving layer 200 through vias.
A channel 511 is disposed on the first sub-pixel defining layer 510 corresponding to the display area 31, and the channel 511 completely penetrates the first sub-pixel defining layer 510 corresponding to the display area 31, so that two adjacent anode units 410 are not conductive; the channel 511 is filled with the same material as the second sub-pixel defining layer 520.
The first sub-pixel defining layer 510 may be regarded as being formed by a plurality of crisscrossed pixel defining branches 512, the plurality of crisscrossed pixel defining branches 512 form a plurality of open areas, the anode units 410 are located in the open areas, and the channels 511 space the pixel defining branches 512 into two unconnected first pixel defining branches 513 and second pixel defining branches 514 along the length direction, so that any two adjacent anode units 410 will not be turned on due to the first sub-pixel defining layer 510.
In addition, if the width of the channel 511 is large, the light shielding effect of the first sub-pixel defining layer 510 is greatly reduced, so that the width of the channel 511 can be reduced as much as possible, and by providing a plurality of spaced channels 511, the light shielding effect is not affected, and breakdown conduction of two adjacent anode units 410 due to the small width of the channel 511 is not generated.
FIG. 4 is a schematic diagram of a non-display area of a display panel according to a first embodiment of the present application, as shown in FIG. 4, the driving layer 200 includes a plurality of active switches 210, and a projection of the active switches 210 on the substrate 100 overlaps a projection of the pixel defining layer 500 on the substrate 100 to include a first metal layer 400; the active switch 210 includes a gate electrode 211, a gate insulating layer 212, a semiconductor layer 213, and a source/drain electrode layer sequentially stacked, where the source/drain electrode layer includes a source electrode 214 and a drain electrode 215.
Since the material of the pixel defining layer 500 of the non-display region 32 is a transparent organic material, the surfaces of the source electrode 214, the drain electrode 215 and the gate electrode 211 in the driving layer 200 corresponding to the non-display region 32 in this embodiment are all provided with metal oxide layers. Thus, light is prevented from being reflected by the surface of the metal layer 400 such as the source electrode 214, the drain electrode 215, and the gate electrode 211, which are irradiated onto the driving layer 200, through the pixel defining layer 500 in the non-display region 32.
Example 2:
fig. 5 is a schematic diagram of a display panel according to a second embodiment of the present application, as shown in fig. 5, unlike the first embodiment, in which a light emitting material is filled in a channel 511, a light emitting layer 600 and a cathode layer 700 are disposed over a metal layer 400 in a display area 31, the light emitting layer 600 is made of the light emitting material, and the light emitting layer 600 is prepared between a first sub-pixel defining layer 510 and a second sub-pixel defining layer 520, so that the light emitting material for preparing the light emitting layer 600 can be filled in the channel 511, specifically:
The first sub-pixel defining layer 510 corresponds to a non-opening area of the display panel 30, the metal layer 400 includes a plurality of anode units 410 disposed at intervals, the anode units 410 correspond to an opening area of the display panel 30, and the anode units 410 are connected with the driving layer 200 through vias; at least one channel 511 is disposed on the first sub-pixel defining layer 510 corresponding to the display area 31, and the channel 511 completely penetrates the first sub-pixel defining layer 510 corresponding to the display area 31, so that two adjacent anode units 410 are not conductive; the channel 511 is filled with a light emitting material.
Compared to the solution of the first embodiment, since the light emitting layer 600 is prepared entirely and sequentially from multiple layers of materials, the light emitting material can be well filled into the channel 511, the contact between the first pixel defining leg 513 and the second pixel defining leg 514 at two sides of the channel 511 is avoided, and even in the case that the light emitting material cannot completely fill the channel 511, the second sub-pixel defining layer 520 can be secondarily filled when the second sub-pixel defining layer 520 is provided.
The application also discloses a preparation method of the display panel 30, which is used for preparing the display panel 30 in the two embodiments, and the method is as follows.
Fig. 6 is a schematic diagram of a method for manufacturing a display panel according to a first embodiment of the present application, as shown in fig. 6 to 7, the method corresponds to the display panel 30 of the first embodiment, the display panel 30 includes a display area 31 and a non-display area 32, and the non-display area 32 is disposed around the display area 31, and includes the steps of:
S1: forming a metal layer on a substrate;
s2: forming an anti-reflection layer on the metal layer corresponding to the non-display region;
s3: forming a pixel defining layer on the metal layer;
s4: forming a light emitting layer on the pixel defining layer;
S5: a cathode layer is formed on the light emitting layer.
The material of the pixel defining layer 500 corresponding to the non-display area 32 is a transparent organic material, and the pixel defining layer 500 of the display area 31 includes a black organic material.
In this embodiment, by disposing the anti-reflection layer 450 on the metal layer 400, the pixel definition layer 500 of the non-display area 32 does not need to be made of a black organic material, and the light reflection phenomenon of the metal layer 400 can be prevented, and since the material of the pixel definition layer 500 in the non-display area 32 is made of a transparent organic material, the breakdown risk of adjacent metal wires in the metal layer 400 can be prevented, and the display effect can be improved.
Fig. 8 is a schematic diagram of a method for preparing an antireflection layer according to a first embodiment of the present application, as shown in fig. 8-9, the step S2: the step of forming an anti-reflection layer on the metal layer corresponding to the non-display region includes:
s21: forming a first sub-pixel defining layer on the metal layer;
s22: removing the first sub-pixel definition layer corresponding to the non-display area, and exposing only the top surface of the metal layer corresponding to the non-display area;
s23: and setting an anti-reflection layer on the metal layer corresponding to the non-display area.
Wherein the material of the first sub-pixel defining layer 510 is a black organic material, the anti-reflection layer 450 is a metal oxide layer, and only the top surface 440 of the metal layer 400 corresponding to the non-display region 32 is exposed after removing the first sub-pixel defining layer 510 corresponding to the non-display region 32, thereby avoiding the formation of a metal oxide layer on the side surface 430 of the metal layer 400 corresponding to the non-display region 32.
Moreover, the S23: the step of disposing an anti-reflection layer on the top surface of the metal layer corresponding to the non-display region includes:
s231: a simple substance aluminum layer is arranged on the top surface of the metal layer corresponding to the non-display area;
S232: through a thermal process and O 2 treatment, the simple substance aluminum layer is rapidly oxidized to form aluminum oxide;
s233: carrying out O 2 atmosphere annealing treatment and O 2 ashing treatment on the aluminum oxide;
thereby achieving control of the thickness of the alumina and avoiding abnormal protrusions on the surface of the alumina, and preventing the risk of puncturing the pixel defining layer 500.
Fig. 10 is a schematic diagram of a method for preparing a pixel defining layer according to a first embodiment of the present application, as shown in fig. 10-11, the step S3: the step of forming a pixel defining layer on the metal layer includes:
S31: completely removing the first sub-pixel definition layer corresponding to the non-display area;
s32: setting a channel on the first sub-pixel definition layer corresponding to the display area;
S33: and forming a second sub-pixel definition layer on the metal layer corresponding to the non-display area and the first sub-pixel definition layer corresponding to the display area.
The material of the second sub-pixel defining layer 520 is a transparent organic material, and the channel 511 is filled with the transparent organic material.
That is, a first sub-pixel defining layer 510 is disposed over a metal layer 400, then the first sub-pixel defining layer 510 corresponding to a non-display region 32 is partially removed, a top surface 440 of the metal layer 400 of the non-display region 32 is exposed, then a metal oxide layer is disposed on the top surface 440 of the metal layer 400 of the non-display region 32, then the first sub-pixel defining layer 510 corresponding to the non-display region 32 is completely removed, a channel 511 is disposed on the first sub-pixel defining layer 510 corresponding to the display region 31, and then a second sub-pixel defining layer 520 is prepared such that the channel 511 is filled with the second sub-pixel defining layer 520, and the second sub-pixel defining layer 520 completely covers the exposed top surface 440 and side surface 430 of the first sub-pixel defining layer 510.
Fig. 12 is a schematic diagram of a method for manufacturing an antireflection layer according to a second embodiment of the present application, as shown in fig. 12 to 13, which is different from the first embodiment in that: the trenches 511 are filled with a luminescent material, so that only in step
S32: setting a channel on the first sub-pixel definition layer corresponding to the display area;
S33: and forming a second sub-pixel definition layer on the metal layer corresponding to the non-display area and the first sub-pixel definition layer corresponding to the display area. The step of adding:
S321: forming a light emitting layer on the first sub-pixel defining layer;
compared to the solution of the first embodiment, since the light emitting layer 600 is prepared entirely and sequentially from multiple layers of materials, the light emitting material can be well filled into the channel 511, the contact between the first pixel defining leg 513 and the second pixel defining leg 514 at two sides of the channel 511 is avoided, and even in the case that the light emitting material cannot completely fill the channel 511, the second sub-pixel defining layer 520 can be secondarily filled when the second sub-pixel defining layer 520 is provided.
It should be noted that, the limitation of each step in the present solution is not to be considered as limiting the sequence of steps on the premise of not affecting the implementation of the specific solution, and the steps written in the previous step may be executed before, or executed after, or even executed simultaneously, so long as the implementation of the present solution is possible, all the steps should be considered as falling within the protection scope of the present application.
It should be noted that, the inventive concept of the present application can form a very large number of embodiments, but the application documents are limited in space and cannot be listed one by one, so that on the premise of no conflict, the above-described embodiments or technical features can be arbitrarily combined to form new embodiments, and after the embodiments or technical features are combined, the original technical effects will be enhanced.
The above description of the application in connection with specific alternative embodiments is further detailed and it is not intended that the application be limited to the specific embodiments disclosed. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the application, and these should be considered to be within the scope of the application.
Claims (10)
1. A display panel comprising a display region and a non-display region, the non-display region disposed around the display region, characterized in that the display panel further comprises a substrate, a driving layer, a first insulating layer, a metal layer, and a pixel definition layer, the driving layer and the first insulating layer being disposed between the substrate and the metal layer, the metal layer and the pixel definition layer being disposed on the first insulating layer; the material of the pixel definition layer corresponding to the non-display area is a transparent organic material; an anti-reflection layer is arranged on one side, away from the substrate, of the metal layer in the non-display area, and the pixel definition layer of the display area comprises a black organic material.
2. The display panel of claim 1, wherein the anti-reflective layer comprises a metal oxide layer.
3. The display panel of claim 2, wherein the metal layer comprises a first indium tin oxide, a silver and a second indium tin oxide stacked in sequence, the metal oxide layer is aluminum oxide, and the aluminum oxide is disposed on a side of the second indium tin oxide away from the substrate.
4. The display panel according to claim 2, wherein the pixel defining layer in the display area includes a first sub-pixel defining layer and a second sub-pixel defining layer stacked, the first sub-pixel defining layer being made of a black organic material, the second sub-pixel defining layer being made of a transparent organic material, the second sub-pixel defining layer being disposed on a side of the first sub-pixel defining layer away from the substrate.
5. The display panel of claim 4, wherein the first sub-pixel defining layer corresponds to a non-opening area of the display panel, the metal layer comprises a plurality of anode units arranged at intervals, the anode units correspond to an opening area of the display panel, and the anode units are connected with the driving layer through vias;
At least one channel is arranged on the first sub-pixel definition layer corresponding to the display area, and the channel completely penetrates through the first sub-pixel definition layer corresponding to the display area; the channel is filled with a luminescent material or a second sub-pixel defining layer.
6. The display panel of claim 2, wherein the metal layer comprises a bottom surface, a side surface and a top surface connected, the side surface being located between the top surface and the bottom surface, the bottom surface abutting the first insulating layer, the metal oxide layer covering only the top surface of the metal layer.
7. A method for manufacturing a display panel including a display area and a non-display area, the non-display area being disposed around the display area, comprising the steps of:
Forming a metal layer on a substrate;
Forming an anti-reflection layer on the metal layer corresponding to the non-display region;
Forming a pixel defining layer on the metal layer;
The material of the pixel definition layer corresponding to the non-display area is a transparent organic material, and the pixel definition layer of the display area comprises a black organic material.
8. The method of manufacturing a display panel according to claim 7, wherein the step of forming an anti-reflection layer on the metal layer corresponding to the non-display region comprises:
forming a first sub-pixel defining layer on the metal layer;
removing the first sub-pixel definition layer corresponding to the non-display area, and exposing only the top surface of the metal layer corresponding to the non-display area;
An anti-reflection layer is arranged on the top surface of the metal layer corresponding to the non-display area;
The material of the first sub-pixel definition layer is a black organic material, and the anti-reflection layer is a metal oxide layer.
9. The method of manufacturing a display panel according to claim 8, wherein the step of forming a pixel defining layer on the metal layer comprises:
completely removing the first sub-pixel definition layer corresponding to the non-display area;
setting a channel on the first sub-pixel definition layer corresponding to the display area;
Forming a second sub-pixel definition layer on the metal layer corresponding to the non-display area and the first sub-pixel definition layer corresponding to the display area;
the material of the second sub-pixel definition layer is a transparent organic material, and the channel is filled with the transparent organic material.
10. A display device comprising a driving circuit, wherein the display device further comprises the display panel manufactured by the manufacturing method of the display panel according to any one of claims 7 to 9, and the driving circuit is connected to the display panel.
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| CN108962964A (en) * | 2018-08-01 | 2018-12-07 | 京东方科技集团股份有限公司 | Display panel, manufacturing method thereof, and display device |
| CN109616497A (en) * | 2018-11-30 | 2019-04-12 | 武汉华星光电技术有限公司 | OLED display panel |
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| WO2013047622A1 (en) * | 2011-09-30 | 2013-04-04 | シャープ株式会社 | Display device and display device manufacturing method |
| KR102784977B1 (en) * | 2019-07-04 | 2025-03-20 | 엘지디스플레이 주식회사 | Anti-reflecting film and display device including the same |
| CN112164763B (en) * | 2020-09-29 | 2023-05-26 | 京东方科技集团股份有限公司 | Organic light emitting display panel, method of manufacturing the same, and display device |
| CN116828919B (en) * | 2023-06-30 | 2024-09-06 | 惠科股份有限公司 | Display panel, manufacturing method thereof and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108962964A (en) * | 2018-08-01 | 2018-12-07 | 京东方科技集团股份有限公司 | Display panel, manufacturing method thereof, and display device |
| CN109616497A (en) * | 2018-11-30 | 2019-04-12 | 武汉华星光电技术有限公司 | OLED display panel |
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