CN112864333A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN112864333A CN112864333A CN202110104060.8A CN202110104060A CN112864333A CN 112864333 A CN112864333 A CN 112864333A CN 202110104060 A CN202110104060 A CN 202110104060A CN 112864333 A CN112864333 A CN 112864333A
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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
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
- H10K50/125—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light
- H10K50/13—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light comprising stacked EL layers within one EL unit
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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
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
Abstract
The embodiment of the invention discloses a display panel and a display device, wherein the display panel comprises a substrate, a driving circuit layer, a light emitting layer and an encapsulation layer, wherein the driving circuit layer is arranged on one side of the substrate; the light-emitting layer comprises a first light-emitting layer and a second light-emitting layer, the first light-emitting layer is arranged on one side, away from the substrate, of the driving circuit layer, and the driving circuit layer is used for driving the first light-emitting layer to emit light; the second light-emitting layer is arranged on one side, far away from the substrate, of the first light-emitting layer, the projection part of the second light-emitting layer is overlapped with the projection part of the first light-emitting layer along the direction perpendicular to the substrate, the second light-emitting layer is excited by light emitted by the first light-emitting layer to emit light, the light-emitting color of the second light-emitting layer is different from that of the first light-emitting layer, and the packaging layer covers the light-emitting layer. According to the technical scheme provided by the embodiment of the invention, the first light-emitting layer and the second light-emitting layer can be manufactured in a layered mode by adopting a patterning technology, FMM materials are saved, the yield of manufacturing the light-emitting layers is improved, the cost is saved, and the problem of color cast of the display panel is well solved.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a display panel and a display device.
Background
With the development of display technology and the improvement of living standard of people, Organic Light-Emitting Diode (OLED) display devices are widely used, the conventional method for manufacturing pixel units of display panels generally adopts a Fine Metal Shadow Mask (FMM) process to dispose OLEDs with different Light-Emitting colors on the same layer, the FMM technology for manufacturing display panels has the problems of high cost and low yield, and the display panels manufactured by disposing the OLEDs with different Light-Emitting colors on the same layer have the problem of color cast.
Disclosure of Invention
The embodiment of the invention provides a display panel and a display device, and aims to solve the problem that the existing display panel is high in cost during preparation.
In order to realize the technical problem, the invention adopts the following technical scheme:
in a first aspect, an embodiment of the present invention provides a display panel, including:
a substrate;
a driving circuit layer disposed on one side of the substrate;
the light-emitting layer comprises a first light-emitting layer and a second light-emitting layer, the first light-emitting layer is arranged on one side, away from the substrate, of the driving circuit layer, and the driving circuit layer is used for driving the first light-emitting layer to emit light;
the second light-emitting layer is arranged on one side, far away from the substrate, of the first light-emitting layer, the projection part of the second light-emitting layer is overlapped with the projection part of the first light-emitting layer along the direction perpendicular to the substrate, the second light-emitting layer is excited by light emitted by the first light-emitting layer to emit light, and the light-emitting color of the second light-emitting layer is different from that of the first light-emitting layer;
and the packaging layer covers the light-emitting layer.
Furthermore, the display panel is divided into a pixel space area and a plurality of pixel areas arranged at intervals, and the pixel areas comprise a first pixel area and a second pixel area;
the first light-emitting layer is positioned in the pixel spacing area and the pixel area, and the orthographic projection of the second light-emitting layer and the orthographic projection of the first light-emitting layer on the substrate are overlapped in the second pixel area.
Further, the second light emitting layer is disposed in the encapsulation layer.
Further, the packaging layer comprises at least two inorganic layers and at least one organic layer which are arranged in a stacked mode; at least one organic layer disposed between at least two inorganic layers;
the second light-emitting layer is arranged in the organic layer; or the second light emitting layer is arranged between any two film layers of the packaging layer.
Further, the second light emitting layer includes a first sub light emitting layer and a second sub light emitting layer which emit light of different colors;
the first sub-emitting layer and the second sub-emitting layer are disposed in the same layer,
or the first sub-light-emitting layer is arranged on one side of the second sub-light-emitting layer close to the first light-emitting layer;
preferably, the first light emitting layer is a blue light emitting layer, the first sub-light emitting layer is a green light emitting layer, and the second sub-light emitting layer is a red light emitting layer.
Further, the material of the light-emitting layer is an organic light-emitting material.
In a second aspect, an embodiment of the present invention provides a method for manufacturing a display panel, including:
forming a driving circuit layer on one side of the substrate;
forming a first light-emitting layer on one side of the driving circuit layer, which is far away from the substrate, wherein the first light-emitting layer is electrically connected with the driving circuit layer;
manufacturing a second light-emitting layer on one side of the first light-emitting layer, which is far away from the substrate; the light-emitting color of the second light-emitting layer is different from that of the first light-emitting layer, and the projection part of the second light-emitting layer is overlapped with that of the first light-emitting layer along the direction vertical to the substrate;
and forming an encapsulation layer which covers the first light-emitting layer and the second light-emitting layer.
Further, the manufacturing of the second light-emitting layer on the side of the first light-emitting layer away from the substrate includes:
and manufacturing a second light-emitting layer on the side of the first light-emitting layer far away from the substrate by photoetching or printing.
Further, the second light emitting layer includes a first sub light emitting layer and a second sub light emitting layer which emit light of different colors;
projections of the first sub light emitting layer and the second sub light emitting layer do not overlap in a direction perpendicular to the substrate.
In a third aspect, an embodiment of the present invention provides a display device, including any display panel of the first aspect.
In the display panel provided by the embodiment, the first light emitting layer is arranged on one side of the driving circuit layer, which is far away from the substrate, and the second light emitting layer is arranged on one side of the first light emitting layer, which is far away from the substrate, along the direction perpendicular to the substrate, the projection part of the second light emitting layer is overlapped with the projection part of the first light emitting layer, the first light emitting layer is driven by the driving circuit layer to emit light, and the second light emitting layer is excited by the light emitted by the first light emitting layer to emit light, so that the first light emitting layer and the second light emitting layer can be manufactured by adopting a patterning technology, FMM materials are saved, the cost is saved, the yield of manufacturing the first light emitting layer and the second light emitting layer is improved, and the; in addition, the second light emitting layer is arranged on the side, far away from the substrate, of the first light emitting layer, so that the distance from the first light emitting layer with the slower attenuation speed to the light emitting side of the display panel is longer, the distance from the second light emitting layer with the faster attenuation speed to the light emitting side of the display panel is shorter, the problem of color cast of the display panel is well solved, and the display effect of the display panel is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 2 is a top view of a display panel according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 9 is a flowchart of a method for manufacturing a display panel according to an embodiment of the invention;
FIG. 10 is a flowchart illustrating a method for fabricating a display panel according to another embodiment of the present invention;
fig. 11 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
As mentioned in the background art, the conventional method for manufacturing the pixel unit of the display panel generally adopts an FMM process, the conventional display panel is generally full-color, the process for manufacturing the display panel by using the FMM technology has a high cost, and the yield of the display panel is affected.
Based on the above technical problem, the present embodiment proposes the following solutions:
fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention. Referring to fig. 1, the display panel provided by the embodiment of the invention includes a substrate 1, a driving circuit layer 2, a light emitting layer 3 and an encapsulation layer 4, wherein the driving circuit layer 2 is disposed on one side of the substrate 1; the light-emitting layer 3 comprises a first light-emitting layer 31 and a second light-emitting layer 32, the first light-emitting layer 31 is arranged on one side of the driving circuit layer 2, which is far away from the substrate 1, and the driving circuit layer 2 is used for driving the first light-emitting layer 31 to emit light; the second light-emitting layer 32 is disposed on a side of the first light-emitting layer 31 away from the substrate 1, a projection portion of the second light-emitting layer 32 and the first light-emitting layer 31 overlaps in a direction perpendicular to the substrate 1, the second light-emitting layer 32 is excited by light emitted from the first light-emitting layer 31 to emit light, a light-emitting color of the second light-emitting layer 32 is different from a light-emitting color of the first light-emitting layer 31, and the encapsulation layer 4 covers the light-emitting layer 3.
Specifically, the second light-emitting layer 32 is disposed on the side of the first light-emitting layer 31 away from the substrate 1, the second light-emitting layer 32 is excited by light emitted from the first light-emitting layer 31 to emit light, the light-emitting color of the second light-emitting layer 32 is different from the light-emitting color of the first light-emitting layer 31, the light-emitting layer 3 with the fast light-emitting luminance decay speed can be disposed as the second light-emitting layer 32, the light-emitting layer 3 with the slow light-emitting luminance decay speed is disposed as the first light-emitting layer 31, the distance from the first light-emitting layer 31 with the slow light-emitting luminance decay speed to the light-emitting side of the display panel is further, the distance from the second light-emitting layer 32 with the fast light-emitting luminance decay speed to the light-emitting side of the display panel is closer, the.
By arranging the first light emitting layer 31 on the side of the driving circuit layer 2 away from the substrate 1 and arranging the second light emitting layer 32 on the side of the first light emitting layer 31 away from the substrate 1, the first light emitting layer 31 can be arranged in a whole layer, so that the manufacturing difficulty of the first light emitting layer 31 is low, the second light emitting layer 32 and the first light emitting layer 31 are arranged on different layers, and the second light emitting layer 32 can be manufactured by a patterning technology, so that an FMM process is omitted. The first light emitting layer 31 is driven by the driving circuit layer 2 to emit light, the second light emitting layer 32 absorbs energy of light emitted by the first light emitting layer 31 to be excited, energy is released in a form of light emission to return to a ground state, the second light emitting layer 32 is excited by light emitted by the first light emitting layer 31 to emit light, the first light emitting layer 31 and the second light emitting layer 32 jointly form a pixel unit, and white light display or color screen display can be achieved. The encapsulation layer 4 can be arranged on one side of the second light emitting layer 32 far away from the first light emitting layer 31, or the second light emitting layer 32 can be arranged in the encapsulation layer 4, so that the encapsulation effect of the first light emitting layer 31 and the second light emitting layer 32 is better, the water and oxygen blocking capability of the display panel is improved, the encapsulation effect of the light emitting layer 3 is better by arranging the encapsulation layer 4 to cover the light emitting layer 3, the water and oxygen blocking capability of the encapsulation layer 4 is strong, and the display effect of the display panel is further improved; on the other hand, cover luminescent layer 3 through setting up encapsulating layer 4, because encapsulating layer 4 has better cushioning effect, the stress that produces when the balanced display panel that can be better buckles is favorable to promoting display panel's anti bending performance. Fig. 1 exemplarily shows a case where the encapsulation layer 4 is provided on a side of the second light-emitting layer 32 away from the first light-emitting layer 31.
In the display panel provided by the embodiment, the first light emitting layer is arranged on one side of the driving circuit layer, which is far away from the substrate, and the second light emitting layer is arranged on one side of the first light emitting layer, which is far away from the substrate, along the direction perpendicular to the substrate, the projection part of the second light emitting layer is overlapped with the projection part of the first light emitting layer, the first light emitting layer is driven by the driving circuit layer to emit light, and the second light emitting layer is excited by the light emitted by the first light emitting layer to emit light, so that the first light emitting layer and the second light emitting layer can be manufactured by adopting a patterning technology, FMM materials are saved, the cost is saved, the yield of manufacturing the first light emitting layer and the second light emitting layer is improved, and the; in addition, the second light emitting layer is arranged on the side, far away from the substrate, of the first light emitting layer, so that the distance from the first light emitting layer with the slower attenuation speed to the light emitting side of the display panel is longer, the distance from the second light emitting layer with the faster attenuation speed to the light emitting side of the display panel is shorter, the problem of color cast of the display panel is well solved, and the display effect of the display panel is improved.
Optionally, fig. 2 is a top view of a display panel provided in an embodiment of the present invention. Fig. 3 is a schematic structural diagram of another display panel according to an embodiment of the present invention. On the basis of the above embodiments, with reference to fig. 2 and 3, the display panel 100 is divided into a pixel spacing area 10 and a plurality of pixel areas 20 arranged at intervals, and the pixel areas 20 include a first pixel area 30 and a second pixel area 40; the first light emitting layer 31 is located between the pixel spacing region 10 and the pixel region 20, and the orthographic projection of the second light emitting layer 32 and the first light emitting layer 31 on the substrate 1 overlaps the second pixel region 40.
Specifically, the first light emitting layer 31 is disposed in the pixel interval region 10 and the pixel region 20, so that the first light emitting layer 31 can be entirely fabricated without a pixel limiting structure in the process of fabricating the first light emitting layer 31, and thus, a patterning technology with a simple process can be adopted for fabrication, an FMM process is omitted, the fabrication yield of the first light emitting layer 31 is improved, and the fabrication cost of the display panel is saved.
Optionally, with reference to fig. 2 and fig. 3, in a process of preparing the second light emitting layer 32, a pixel defining structure may be prepared in the pixel spacing area 10, for example, a black matrix may be prepared, the pixel defining structure may be disposed in the same layer as the second light emitting layer 32, a pixel opening may be formed in the pixel area 20, the pixel opening and the second light emitting layer 32 are disposed in the same layer, orthogonal projections of the second light emitting layer 32 and the first light emitting layer 31 on the substrate 1 are overlapped on the second pixel area 40, the first light emitting layer 31 emits light through the pixel opening of the first pixel area 30, and the second light emitting layer 32 emits light through the pixel opening of the second pixel area 40, so that white light display or color image display may be implemented, color mixing of different colors of light emitted by the first light emitting layer 31 and the second light emitting layer 32 of the display panel is avoided, and a display effect of the display panel is improved.
Optionally, fig. 4 is a schematic structural diagram of another display panel provided in the embodiment of the present invention. On the basis of the above embodiment, referring to fig. 4, the second light emitting layer 32 may be disposed within the encapsulation layer 4.
Specifically, the second light emitting layer 32 may be disposed in the encapsulation layer 4, so that the encapsulation effect of the second light emitting layer 32 is better, the water and oxygen blocking capability of the display panel is further improved, and the display effect of the display panel is improved. The planarization of the encapsulation layer 4 is good, so that the second light emitting layer 32 can be conveniently manufactured in the encapsulation layer 4 through a patterning technology, and exemplarily, the second light emitting layer 32 can be manufactured in the encapsulation layer 4 through photoetching or printing, so that the manufacturing yield of the second light emitting layer 32 is further improved, and the manufacturing cost of the display panel is saved.
In addition, the second light emitting layer 32 is manufactured in the encapsulation layer 4 through a patterning technology, so that the process difficulty is low, and the manufacturing requirement of a large-size display panel with high manufacturing precision requirement is met conveniently. And because the packaging layer 4 has a better buffering effect, the stress generated when the display panel is bent can be better balanced by arranging the packaging layer 4 to cover the light-emitting layer, and the bending resistance of the display panel is favorably improved.
Optionally, fig. 5 is a schematic structural diagram of another display panel provided in the embodiment of the present invention. On the basis of the above embodiment, referring to fig. 5, the encapsulation layer 4 includes at least two inorganic layers 41 and at least one organic layer 42, which are stacked; at least one organic layer 42 is disposed between at least two inorganic layers 41; the second light emitting layer 32 is disposed in the organic layer 42; alternatively, the second light emitting layer 32 is disposed between any two film layers of the encapsulation layer 4.
Specifically, the at least two inorganic layers 41 have a good water and oxygen blocking effect, the organic layer 42 has a planarization effect, and the at least one organic layer 42 is disposed between the at least two inorganic layers 41, so that the packaging effect of the packaging layer 4 can be improved, and the water and oxygen blocking capability of the display panel can be improved. Fig. 5 exemplarily shows a case that the encapsulation layer 4 includes two inorganic layers 41 and one organic layer 42, the second light emitting layer 32 is disposed between the inorganic layer 41 and the organic layer 42 of the encapsulation layer 4 adjacent to the first light emitting layer 31, the second light emitting layer 32 is disposed between any two film layers of the encapsulation layer 4, the process is simple, the layer-by-layer manufacturing is convenient, the encapsulation effect of the second light emitting layer 32 can be improved, so that the second light emitting layer 32 has a better light emitting effect, when the second light emitting layer 32 is disposed between any two film layers of the encapsulation layer 4 in combination with fig. 2 and 5, the pixel defining structure 5 can be prepared at the pixel 10, the pixel defining structure 5 and the second light emitting layer 32 can be disposed at the same layer, the pixel opening can be disposed at the pixel spacing area 20, the pixel opening and the second light emitting layer 32 can be disposed at the same layer, the material of the pixel defining structure 5 can be different from the material of the encapsulation, for example, the material of the pixel defining structure 5 may be a black matrix, and this arrangement makes it difficult for the light of different colors emitted by the first light emitting layer 31 and the second light emitting layer 32 of the display panel to mix colors, thereby further improving the display effect of the display panel.
Fig. 6 is a schematic structural diagram of another display panel according to an embodiment of the present invention. Referring to fig. 6, the second light emitting layer 32 may be disposed in the organic layer 42, and with reference to fig. 2 and fig. 6, since the material of the second light emitting layer 32 is an organic light emitting material, the second light emitting layer 32 is disposed in the organic layer 42, and may form a better adhesive force with the organic layer 42, which is beneficial to improving the bending resistance of the flexible screen body, and since the material of the organic layer 42 has a better buffering effect, the stress of the panel during bending may be better balanced. It should be noted that, when the encapsulation layer 4 includes at least two inorganic layers 41 and two organic layers 42 stacked in layers, and the second light emitting layer 32 is disposed between two adjacent organic layers 42, a pixel defining structure such as a black matrix may be prepared in the pixel spacer 10 in the same layer as the second light emitting layer 32, or a film structure of the same material as the organic layer 42 may be provided in the pixel spacer 10 in the same layer as the second light emitting layer 32, which is not limited herein.
Optionally, fig. 7 is a schematic structural diagram of another display panel provided in the embodiment of the present invention. On the basis of the above-described embodiment, referring to fig. 7, the second light emitting layer 32 includes the first sub-light emitting layer 321 and the second sub-light emitting layer 322 which emit light of different colors; the first sub-emission layer 321 and the second sub-emission layer 322 are disposed on the same layer, or the first sub-emission layer 321 is disposed on the side of the second sub-emission layer 322 close to the first emission layer 31; preferably, the first light emitting layer 31 is a blue light emitting layer, the first sub-light emitting layer 321 is a green light emitting layer, and the second sub-light emitting layer 322 is a red light emitting layer.
Specifically, referring to fig. 7, the first sub-light emitting layer 321 and the second sub-light emitting layer 322 may be disposed on the same layer, so that the thickness of the display panel is thinner, which is beneficial to reducing the thickness of the display panel. Fig. 8 is a schematic structural diagram of another display panel according to an embodiment of the present invention. On the basis of the above embodiments, referring to fig. 8, the first sub-light emitting layer 321 may be disposed on one side of the second sub-light emitting layer 322 close to the first light emitting layer 31, so that the first sub-light emitting layer 321 and the second sub-light emitting layer 322 are conveniently prepared layer by layer through patterning, the process is simple, and the manufacturing cost of the display panel is saved. On the other hand, the first sub-light emitting layer 321 may be disposed on the side of the second sub-light emitting layer 322 close to the first light emitting layer 31, and the second sub-light emitting layer 322 may be disposed on the side of the organic layer 42 close to the first light emitting layer 31, so that both the first sub-light emitting layer 321 and the second sub-light emitting layer 322 have a better encapsulation effect, and the water and oxygen blocking capability is stronger, and by disposing the second sub-light emitting layer 322 on the side of the organic layer 42 close to the first light emitting layer 31, the first sub-light emitting layer 321 and the second sub-light emitting layer 322 are closer to the first light emitting layer 31, light emitted by the first light emitting layer 31 may strongly excite the first sub-light emitting layer 321 and the second sub-light emitting layer 322 to emit light.
Preferably, with continued reference to fig. 8, the first light-emitting layer 31 is a blue light-emitting layer, the first sub-light-emitting layer 321 is a green light-emitting layer, and the second sub-light-emitting layer 322 is a red light-emitting layer. Because the brightness attenuation speed of the blue light emitted by the blue light emitting layer is less than the brightness attenuation speed of the green light emitted by the first sub light emitting layer 321, and the brightness attenuation speed of the green light emitted by the first sub light emitting layer 321 is less than the brightness attenuation speed of the red light emitted by the second sub light emitting layer 322, the brightness attenuation speed of the blue light emitted by the blue light emitting layer, the brightness attenuation speed of the green light emitted by the first sub light emitting layer 321, and the brightness attenuation speed of the red light emitted by the second sub light emitting layer 322 tend to be the same, the color shift of the display panel is improved, and the display effect of the display panel is further improved.
Alternatively, the material of the light emitting layer may be an organic light emitting material.
Specifically, the material of the first light-emitting layer may include an aryl-substituted anthracene derivative AND, a pyrene derivative TOTP, MP1 or MP2, a fluorene derivative DPYDL01, or a homocyclic metal ligand FIrPic, FCNIr or ir (dfpyy)3And the like. The material of the first sub-emission layer may include a coumarin-based material C545T or C545TB or an iridium metal complex, such as ir (ppy)3(3 (2-phenylpyridyl-N, C2') iridium) or the like. The material of the second sub-light emitting layer may include hydrocarbon aromatic compound RD3, condensed ring aromatic hydrocarbon compound DPP or PAAA, platinum metal complex PtOEP or iridium metal complex Btp2Ir (acac), Ir (bppa)3, Ir (piq)3 or Ir (C8piq)3, and the like.
Optionally, fig. 9 is a flowchart of a manufacturing method of a display panel according to an embodiment of the present invention. On the basis of the above embodiment, referring to fig. 9, the method for manufacturing a display panel according to the embodiment of the present invention includes:
and S101, forming a driving circuit layer on one side of the substrate.
And S102, forming a first light-emitting layer on one side, far away from the substrate, of the driving circuit layer, wherein the first light-emitting layer is electrically connected with the driving circuit layer.
S103, manufacturing a second light-emitting layer on the side, far away from the substrate, of the first light-emitting layer; the light emitting color of the second light emitting layer is different from that of the first light emitting layer, and the projected portion of the second light emitting layer overlaps with that of the first light emitting layer in a direction perpendicular to the substrate.
And S104, forming an encapsulation layer, wherein the encapsulation layer covers the first light-emitting layer and the second light-emitting layer.
Specifically, the first light emitting layer can be manufactured in a whole layer, the manufacturing difficulty of the first light emitting layer is reduced, the second light emitting layer is manufactured on the side, far away from the substrate, of the first light emitting layer, the second light emitting layer can be manufactured through patterning methods such as photoetching, printing or exposure, the manufacturing yield of the first light emitting layer and the second light emitting layer is improved, the first light emitting layer is electrically connected with the driving circuit layer, the first light emitting layer can be driven by the driving circuit layer to emit light, the second light emitting layer is excited by the light emitted by the first light emitting layer to emit light, the first light emitting layer and the second light emitting layer jointly form a pixel unit, and a picture is displayed according to a driving signal of the driving circuit. And the packaging layer is manufactured on one side of the first light-emitting layer and the second light-emitting layer, which is far away from the substrate, so that the packaging layer covers the first light-emitting layer and the second light-emitting layer, the packaging effect of the first light-emitting layer and the second light-emitting layer is better, and the water and oxygen blocking capacity is improved.
Optionally, fig. 10 is a flowchart of another method for manufacturing a display panel according to an embodiment of the present invention. On the basis of the above embodiments, referring to fig. 10, the method for manufacturing a display panel according to an embodiment of the present invention includes:
and S201, forming a driving circuit layer on one side of the substrate.
And S202, forming a first light-emitting layer on one side, far away from the substrate, of the driving circuit layer, wherein the first light-emitting layer is electrically connected with the driving circuit layer.
And S203, manufacturing a second light-emitting layer on the side, far away from the substrate, of the first light-emitting layer by photoetching or printing.
Specifically, the second light emitting layer is manufactured on the side, far away from the substrate, of the first light emitting layer through photoetching or printing, due to the fact that photoetching or printing is low in process difficulty, the yield of manufacturing the second light emitting layer can be improved, an FMM process with high process difficulty is omitted, the second light emitting layer is manufactured through a patterning technology, the second light emitting layer is not limited by the process, and large-size display of the display panel is facilitated.
And S204, forming an encapsulation layer, wherein the encapsulation layer covers the first light-emitting layer and the second light-emitting layer.
Optionally, the second light emitting layer includes a first sub light emitting layer and a second sub light emitting layer which emit light of different colors; projections of the first sub light emitting layer and the second sub light emitting layer do not overlap in a direction perpendicular to the substrate.
Specifically, when the second light emitting layer is manufactured, materials of the light emitting layer may be mixed in advance, the light emitting layer is manufactured by a solution method, patterning of the first sub light emitting layer and the second sub light emitting layer may be realized by methods such as exposure, so that projections of the first sub light emitting layer and the second sub light emitting layer are not overlapped, and when the display panel displays, the first sub light emitting layer, the second sub light emitting layer and the first light emitting layer display a picture together.
According to the manufacturing method of the display panel, the second light emitting layer is manufactured on the side, far away from the substrate, of the first light emitting layer through photoetching or printing, the second light emitting layer is overlapped with the projection part of the first light emitting layer along the direction perpendicular to the substrate, the first light emitting layer is driven by the driving circuit layer to emit light, and the second light emitting layer is excited by the light emitted by the first light emitting layer to emit light, so that the first light emitting layer and the second light emitting layer can be manufactured by adopting a patterning technology, FMM materials are saved, the cost is saved, the yield of manufacturing the first light emitting layer and the second light emitting layer is improved, and the problems of high cost and low yield of the existing display panel in the manufacturing process are solved; in addition, the second light emitting layer is arranged on the side, far away from the substrate, of the first light emitting layer, so that the distance from the first light emitting layer with the slower attenuation speed to the light emitting side of the display panel is longer, the distance from the second light emitting layer with the faster attenuation speed to the light emitting side of the display panel is shorter, the problem of color cast of the display panel is well solved, and the display effect of the display panel is improved. By forming the packaging layer which covers the first light emitting layer and the second light emitting layer, the packaging effect of the light emitting layers is better, the packaging layer has strong capability of blocking water and oxygen, and the display effect of the display panel is further improved; in addition, the packaging layer has a good buffering effect, so that stress generated when the display panel is bent can be well balanced, and the bending resistance of the display panel can be improved.
Optionally, fig. 11 is a schematic structural diagram of a display device according to an embodiment of the present invention. On the basis of the foregoing embodiments, referring to fig. 11, the display device 100 provided in the embodiment of the present invention includes the display panel 200 provided in any of the above embodiments, and has the beneficial effects of the display panel provided in the above embodiments, which are not described herein again. The display device may include mobile terminals such as mobile phones, tablet computers, and wearable devices.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A display panel, comprising:
a substrate;
the driving circuit layer is arranged on one side of the substrate;
the light-emitting layer comprises a first light-emitting layer and a second light-emitting layer, the first light-emitting layer is arranged on one side, away from the substrate, of the driving circuit layer, and the driving circuit layer is used for driving the first light-emitting layer to emit light;
the second light-emitting layer is arranged on one side, far away from the substrate, of the first light-emitting layer, and along a direction perpendicular to the substrate, the second light-emitting layer overlaps with a projection part of the first light-emitting layer, the second light-emitting layer is excited by light emitted by the first light-emitting layer to emit light, and the light-emitting color of the second light-emitting layer is different from that of the first light-emitting layer;
an encapsulation layer covering the light emitting layer.
2. The display panel according to claim 1, wherein the display panel is divided into a pixel space region and a plurality of pixel regions arranged at intervals, the pixel regions including a first pixel region and a second pixel region;
the first light-emitting layer is positioned in the pixel spacing area and the pixel area, and the orthographic projection of the second light-emitting layer and the orthographic projection of the first light-emitting layer on the substrate are overlapped with the second pixel area.
3. The display panel according to claim 1 or 2,
the second light emitting layer is arranged in the packaging layer.
4. The display panel according to claim 3,
the packaging layer comprises at least two inorganic layers and at least one organic layer which are arranged in a stacked mode; at least one of the organic layers is disposed between at least two of the inorganic layers;
the second light-emitting layer is arranged in the organic layer; or the second light-emitting layer is arranged between any two film layers of the packaging layer.
5. The display panel according to claim 4,
the second light emitting layer includes a first sub light emitting layer and a second sub light emitting layer having different emission colors;
the first sub-emitting layer and the second sub-emitting layer are disposed in the same layer,
or the first sub-light-emitting layer is arranged on one side of the second sub-light-emitting layer close to the first light-emitting layer;
preferably, the first light emitting layer is a blue light emitting layer, the first sub-light emitting layer is a green light emitting layer, and the second sub-light emitting layer is a red light emitting layer.
6. The display panel according to claim 1,
the material of the luminescent layer is an organic luminescent material.
7. A method for manufacturing a display panel is characterized by comprising the following steps:
forming a driving circuit layer on one side of the substrate;
forming a first light-emitting layer on one side of the driving circuit layer, which is far away from the substrate, wherein the first light-emitting layer is electrically connected with the driving circuit layer;
manufacturing a second light-emitting layer on one side of the first light-emitting layer far away from the substrate; the light emitting color of the second light emitting layer is different from that of the first light emitting layer, and the projection part of the second light emitting layer and the projection part of the first light emitting layer are overlapped along the direction vertical to the substrate;
forming an encapsulation layer covering the first light emitting layer and the second light emitting layer.
8. The method of claim 7, wherein forming a second light-emitting layer on a side of the first light-emitting layer away from the substrate comprises:
and manufacturing the second light-emitting layer on the side of the first light-emitting layer far away from the substrate by photoetching or printing.
9. The method for manufacturing a display panel according to claim 7,
the second light emitting layer includes a first sub light emitting layer and a second sub light emitting layer having different emission colors;
projections of the first sub light emitting layer and the second sub light emitting layer do not overlap in a direction perpendicular to the substrate.
10. A display device comprising the display panel according to any one of claims 1 to 6.
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Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008153453A (en) * | 2006-12-18 | 2008-07-03 | Fuji Electric Holdings Co Ltd | Organic el element and its manufacturing method |
| US20160254483A1 (en) * | 2014-07-02 | 2016-09-01 | Boe Technology Group Co., Ltd. | Active-matrix organic light-emitting diode (amoled) display panel, manufacturing method thereof and display device |
| CN106098954A (en) * | 2016-06-30 | 2016-11-09 | 京东方科技集团股份有限公司 | A kind of organic electroluminescence device and preparation method thereof, display device |
| CN107681040A (en) * | 2017-10-14 | 2018-02-09 | 施伟强 | Display panel and constructional device |
| KR20180027704A (en) * | 2016-09-06 | 2018-03-15 | 삼성디스플레이 주식회사 | Display apparatus |
| CN109148724A (en) * | 2018-08-30 | 2019-01-04 | 上海天马微电子有限公司 | Display device and organic light emitting display panel |
| CN208970563U (en) * | 2018-11-30 | 2019-06-11 | 昆山工研院新型平板显示技术中心有限公司 | A kind of display panel and display device |
| US20190228686A1 (en) * | 2016-09-28 | 2019-07-25 | Sharp Kabushiki Kaisha | Display apparatus and method for manufacturing same |
| CN110649076A (en) * | 2019-09-29 | 2020-01-03 | 上海天马微电子有限公司 | Organic light emitting display panel and display device |
| CN111162200A (en) * | 2020-01-03 | 2020-05-15 | 武汉天马微电子有限公司 | Display panel and display device |
| CN111162108A (en) * | 2020-01-02 | 2020-05-15 | 京东方科技集团股份有限公司 | Display panel, manufacturing method thereof and display device |
| CN111509025A (en) * | 2020-05-26 | 2020-08-07 | 京东方科技集团股份有限公司 | Display panel based on quantum dots, preparation method thereof and display device |
| CN111613647A (en) * | 2020-04-24 | 2020-09-01 | 合肥维信诺科技有限公司 | Display panel |
| CN111948890A (en) * | 2019-05-16 | 2020-11-17 | 台达电子工业股份有限公司 | Fluorescent color wheel and light source system using same |
| CN112164709A (en) * | 2020-09-24 | 2021-01-01 | 武汉华星光电半导体显示技术有限公司 | Organic light emitting diode display panel, preparation method thereof and display device |
-
2021
- 2021-01-26 CN CN202110104060.8A patent/CN112864333B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008153453A (en) * | 2006-12-18 | 2008-07-03 | Fuji Electric Holdings Co Ltd | Organic el element and its manufacturing method |
| US20160254483A1 (en) * | 2014-07-02 | 2016-09-01 | Boe Technology Group Co., Ltd. | Active-matrix organic light-emitting diode (amoled) display panel, manufacturing method thereof and display device |
| CN106098954A (en) * | 2016-06-30 | 2016-11-09 | 京东方科技集团股份有限公司 | A kind of organic electroluminescence device and preparation method thereof, display device |
| KR20180027704A (en) * | 2016-09-06 | 2018-03-15 | 삼성디스플레이 주식회사 | Display apparatus |
| US20190228686A1 (en) * | 2016-09-28 | 2019-07-25 | Sharp Kabushiki Kaisha | Display apparatus and method for manufacturing same |
| CN107681040A (en) * | 2017-10-14 | 2018-02-09 | 施伟强 | Display panel and constructional device |
| CN109148724A (en) * | 2018-08-30 | 2019-01-04 | 上海天马微电子有限公司 | Display device and organic light emitting display panel |
| CN208970563U (en) * | 2018-11-30 | 2019-06-11 | 昆山工研院新型平板显示技术中心有限公司 | A kind of display panel and display device |
| CN111948890A (en) * | 2019-05-16 | 2020-11-17 | 台达电子工业股份有限公司 | Fluorescent color wheel and light source system using same |
| CN110649076A (en) * | 2019-09-29 | 2020-01-03 | 上海天马微电子有限公司 | Organic light emitting display panel and display device |
| CN111162108A (en) * | 2020-01-02 | 2020-05-15 | 京东方科技集团股份有限公司 | Display panel, manufacturing method thereof and display device |
| CN111162200A (en) * | 2020-01-03 | 2020-05-15 | 武汉天马微电子有限公司 | Display panel and display device |
| CN111613647A (en) * | 2020-04-24 | 2020-09-01 | 合肥维信诺科技有限公司 | Display panel |
| CN111509025A (en) * | 2020-05-26 | 2020-08-07 | 京东方科技集团股份有限公司 | Display panel based on quantum dots, preparation method thereof and display device |
| CN112164709A (en) * | 2020-09-24 | 2021-01-01 | 武汉华星光电半导体显示技术有限公司 | Organic light emitting diode display panel, preparation method thereof and display device |
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| Publication number | Publication date |
|---|---|
| CN112864333B (en) | 2023-02-07 |
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