CN107731862B - Display panel, display device and manufacturing method of display panel - Google Patents
Display panel, display device and manufacturing method of display panel Download PDFInfo
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- CN107731862B CN107731862B CN201710817306.XA CN201710817306A CN107731862B CN 107731862 B CN107731862 B CN 107731862B CN 201710817306 A CN201710817306 A CN 201710817306A CN 107731862 B CN107731862 B CN 107731862B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 239000000758 substrate Substances 0.000 claims abstract description 51
- 238000005286 illumination Methods 0.000 claims abstract description 47
- 238000000034 method Methods 0.000 claims description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 13
- 238000010586 diagram Methods 0.000 description 6
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 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
- H10K59/80—Constructional details
- H10K59/88—Dummy elements, i.e. elements having non-functional features
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/15—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission
- H01L27/153—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission in a repetitive configuration, e.g. LED bars
- H01L27/156—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission in a repetitive configuration, e.g. LED bars two-dimensional arrays
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/005—Processes
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
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- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
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Abstract
The invention relates to the technical field of display, and discloses a display panel, a display device and a manufacturing method of the display panel, so as to improve the illumination effect of an OLED display device. The display panel comprises a substrate base plate and a plurality of lighting display units arranged on the substrate base plate, wherein each lighting display unit comprises a display unit and a micro light-emitting unit, and the micro light-emitting unit is used for lighting. The display panel can realize the display function and provide the illumination function, and the display function and the illumination function are not interfered with each other, so that the illumination effect of the display device is improved, and the power consumption of the display device is reduced.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel, a display device and a manufacturing method of the display panel.
Background
An OLED (Organic Light-Emitting Diode) display device has been classified as a next generation display technology with great development prospect due to its advantages of being thin, Light, wide in viewing angle, active in Light emission, continuously adjustable in Light color, low in cost, fast in response speed, low in energy consumption, low in driving voltage, wide in working temperature range, simple in production process, high in Light Emitting efficiency, capable of performing flexible display, and the like.
The display panel of the existing OLED display device mainly includes a substrate, and a buffer layer, a plurality of thin film transistors, a light emitting layer, and a thin film encapsulation layer sequentially disposed on the substrate.
The prior art has the defect that the OLED display device is mainly used for displaying and has poor illumination effect. For example, an advertisement light box or a show window for displaying an advertisement is also used for illumination at night, but the illumination brightness is low, which results in poor illumination effect, high power consumption of a display device, and it is also necessary to provide illumination lamps around to enhance the illumination brightness. Therefore, how to improve the illumination effect of the OLED display device is a technical problem to be solved urgently at present.
Disclosure of Invention
The embodiment of the invention provides a display panel, a display device and a manufacturing method of the display panel, and aims to improve the illumination effect of the display device.
The embodiment of the invention provides a display panel, which comprises a substrate base plate and a plurality of lighting display units arranged on the substrate base plate, wherein each lighting display unit comprises a display unit and a micro light-emitting unit, and the micro light-emitting unit is used for lighting.
Preferably, the micro light-emitting unit includes a first electrode, a micro light-emitting diode, and a second electrode sequentially disposed along a direction away from the substrate.
Optionally, the display unit is a sub-pixel unit or a pixel unit of the display panel.
Preferably, in each of the illumination display units, the number of the display units and the number of the micro light emitting units are the same.
Preferably, in each lighting display unit, at least two micro light-emitting units are arranged on the periphery of each display unit.
Preferably, the at least two micro light emitting devices are uniformly distributed.
Optionally, the first electrodes of the micro light emitting units of the plurality of lighting display units are electrically connected; and/or
The second electrodes of the micro light emitting units of the plurality of illumination display units are electrically connected.
Preferably, the display panel further includes a flat layer disposed on a side of the lighting display units away from the substrate base plate, the flat layer has via holes for avoiding the micro light-emitting units, and the second electrodes of the micro light-emitting units extend out of the via holes and reach a surface of the flat layer on a side away from the substrate base plate.
Optionally, the display panel further includes a light emitting layer disposed on a side of the planarization layer away from the substrate, and the light emitting layer includes a lower electrode, a light emitting device, and an upper electrode sequentially disposed along a direction away from the substrate.
Optionally, the lower electrode and the second electrode of the micro light-emitting unit are manufactured in the same layer.
Preferably, the display panel further includes a reflective layer disposed between the planarization layer and the lower electrode.
Optionally, the reflective layer comprises a silver reflective layer.
According to the display panel provided by the embodiment of the invention, the illumination display unit comprises the display unit for displaying pictures and the miniature light-emitting unit for illumination, the display panel can realize both a display function and an illumination function, and the display function and the illumination function are not interfered with each other, so that the illumination effect of the display device is improved, and the power consumption of the display device is further reduced.
The embodiment of the invention also provides a display device which comprises the display panel in any one of the technical schemes.
According to the display device provided by the embodiment of the invention, the display panel comprises the display unit for displaying the picture and the miniature light-emitting unit for lighting, the display device can realize the display function and provide the lighting function, and the display function and the lighting function are not interfered with each other, so that the lighting effect of the display device is improved, and the power consumption of the display device is further reduced.
The embodiment of the present invention further provides a method for manufacturing a display panel according to any one of the foregoing technical solutions, including:
sequentially forming a first electrode layer and a micro light-emitting diode pattern layer on a substrate;
forming a flat layer on one side of the micro light-emitting diode pattern layer, which is far away from the substrate;
and forming a second electrode layer on one side of the flat layer far away from the substrate base plate.
Preferably, the manufacturing method further includes forming a light emitting layer on a side of the flat layer away from the substrate, where the light emitting layer includes a lower electrode layer, a light emitting device pattern layer, and an upper electrode layer, which are sequentially disposed along a direction away from the substrate, and the lower electrode layer and the second electrode layer are manufactured in the same layer.
Compared with the prior art, the display panel can realize the display function and provide the illumination function, and the display function and the illumination function are not interfered with each other, so that the illumination effect of the display device is improved, and the power consumption of the display device is reduced.
Drawings
FIG. 1 is a top view of a display panel according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an illumination display unit according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of an illumination display unit according to another embodiment of the present invention;
FIG. 5 is a schematic structural diagram of an illumination display unit according to another embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a display panel according to another embodiment of the present invention;
FIG. 7 is a schematic view of a display device according to an embodiment of the present invention;
FIG. 8 is a schematic flow chart illustrating a method for fabricating a display panel according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of a display panel manufacturing process according to an embodiment of the invention.
Reference numerals:
1-a substrate base plate; 2-illuminating the display unit; 3-a display unit; 4-a micro-lighting unit;
5-a first electrode; 6-micro light emitting diode; 7-a second electrode; 8-a planarization layer;
9-a via hole; 10-a light emitting layer; 11-a lower electrode; 12-a light emitting device; 13-an upper electrode;
14-a pixel defining layer; 15-a reflective layer; 16-a first electrode layer;
17-micro light emitting diode pattern layer; 18-a second electrode layer;
19-a lower electrode layer; 20-a light emitting device pattern layer; 21-upper electrode layer;
22-a display device; 23-display panel.
Detailed Description
In order to improve the illumination effect of the display device, embodiments of the present invention provide a display panel, a display device, and a method for manufacturing the display panel. In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail by referring to the following examples.
As shown in fig. 1, an embodiment of the present invention provides a display panel, which includes a substrate 1, and a plurality of lighting display units 2 disposed on the substrate 1, each lighting display unit 2 including a display unit 3 and a micro light-emitting unit 4, the micro light-emitting unit 4 being used for lighting.
According to the display panel provided by the embodiment of the invention, the illumination display unit 2 comprises the display unit 3 for displaying pictures and the micro light-emitting unit 4 for illuminating, the display panel can realize both a display function and an illumination function, and the display function and the illumination function are not interfered with each other, so that the illumination effect of the display device is improved, and the power consumption of the display device is further reduced.
As shown in fig. 2, the micro light-emitting unit 4 includes a first electrode 5, a micro light-emitting diode 6, and a second electrode 7 sequentially arranged along a direction away from the substrate 1, and after the first electrode 5 and the second electrode 7 are energized, the micro light-emitting diode 6 is driven to emit light, so that the display area of the display panel can realize an illumination function.
In the embodiment of the present invention, the display unit 3 is a sub-pixel unit or a pixel unit of a display panel. The sub-pixel unit is a minimum unit capable of displaying a picture and comprises a red sub-pixel, a green sub-pixel or a blue sub-pixel; the pixel unit is a unit capable of color mixing to realize a color picture, and for example, one pixel unit may include a red sub-pixel, a green sub-pixel, and a blue sub-pixel. In this embodiment, the specific arrangement of the sub-pixels in the display unit 3 is not limited, and may be, for example, a stripe arrangement, a dot arrangement, a triangle arrangement, a mosaic arrangement, or a pentile arrangement.
In the embodiment of the present invention, the specific position of the micro light-emitting unit 4 is not limited, and may be disposed in the peripheral area of the display unit 3, or may be disposed in the display unit 3. In an embodiment of the present invention, the display unit 3 is a sub-pixel unit of the display panel, and the micro light-emitting units 4 are disposed in a peripheral region of the sub-pixel unit; in another embodiment of the present invention, the display unit 3 is a pixel unit of a display panel, and the micro light-emitting unit 4 may be disposed in a peripheral region of the pixel unit, or the micro light-emitting unit 4 may be disposed between two adjacent sub-pixels in the pixel unit.
As shown in fig. 2, in the embodiment of the present invention, the display panel further includes a flat layer 8 disposed on a side of the plurality of lighting display units 2 away from the substrate 1, the flat layer 8 has vias 9 for avoiding the micro light emitting units 4, and the second electrodes 7 of the micro light emitting units 4 extend out of the vias 9 and reach a surface of the flat layer 8 on a side away from the substrate 1.
As shown in fig. 2, in the embodiment of the invention, the display panel further includes a light emitting layer 10 disposed on a side of the planarization layer 8 away from the substrate 1, where the light emitting layer 10 includes a lower electrode 11, a light emitting device 12 and an upper electrode 13 sequentially disposed along a direction away from the substrate 1; the display panel further includes a pixel defining layer 14 disposed between the lower electrode 11 and the upper electrode 13. In this embodiment, the lower electrode 11 of the light emitting layer 10 and the second electrode 7 of the micro light emitting unit 4 can be fabricated in the same layer, so that the fabrication steps and the fabrication cost of the display panel can be reduced. In the present embodiment, the second electrode 7 includes a transparent oxide electrode, such as indium tin oxide ITO or indium zinc oxide IZO.
In one embodiment of the present invention, the number of display units 3 and micro light-emitting units 4 is the same in each illuminated display unit 2. As shown in fig. 3, when the display unit 3 is a sub-pixel unit of a display panel, each sub-pixel unit is disposed corresponding to one micro light emitting unit 4; as shown in fig. 4, when the display unit 3 is a pixel unit of a display panel, each pixel unit is disposed corresponding to one of the micro light-emitting units 4, and each pixel unit includes at least two sub-pixels.
In another embodiment of the present invention, as shown in fig. 5, in each of the illuminated display units 2, at least two micro light emitting units 4 are disposed at the periphery of each of the display units 3. Preferably, the at least two micro light emitting devices 4 are uniformly distributed, and the illumination brightness of the display panel can be relatively uniform by adopting the structural design.
In the embodiment of the present invention, the first electrodes 5 of the micro light emitting units 4 of the plurality of lighting display units 2 are electrically connected; and/or the second electrodes 7 of the micro light-emitting units 4 of the plurality of lighting display units 2 are electrically connected. Thus, the micro light emitting units 4 of the plurality of illumination display units 2 can be synchronously controlled to illuminate.
As shown in fig. 6, the display panel further includes a reflective layer 15 disposed between the planarization layer 8 and the lower electrode 11. With this structural design, the reflective layer 15 can reflect the illumination light incident from the light-emitting layer 10 into the display panel, so that the illumination brightness is relatively uniform. In the present embodiment, the specific type of the reflective layer 15 is not limited, and may be, for example, a silver reflective layer.
As shown in fig. 7, an embodiment of the present invention further provides a display device 22, which includes the display panel 23 according to the foregoing embodiment.
In the display device 22 provided by the embodiment of the present invention, the display panel 23 includes a display unit for displaying a picture and a micro light-emitting unit for illumination, and compared with the prior art, the display device 22 can realize both a display function and an illumination function, and the display function and the illumination function are not interfered with each other, so that the illumination effect of the display device 22 is improved, and the power consumption of the display device 22 is reduced.
In the embodiment of the present invention, the specific type of the display device 22 is not limited, and may be, for example, a mobile phone, an electronic book, a public information bulletin board, an advertising light box, or a window of a building. When the display device 22 is in the illumination working state, the display panel 23 provides a surface light source, the illumination efficiency is high, and the light is natural and soft, so that the harm to human eyes is reduced.
As shown in fig. 8, an embodiment of the present invention further provides a method for manufacturing a display panel according to an embodiment, including:
Compared with the prior art, the display panel can realize the display function and provide the illumination function, and the display function and the illumination function are not interfered with each other, so that the illumination effect of the display device is improved, and the power consumption of the display device is reduced.
In step 101, as shown in fig. 9 (a), first forming a first electrode layer 16 on a substrate base plate 1, and then forming a micro light emitting diode pattern layer 17 on a side of the first electrode layer 16 away from the substrate base plate 1, wherein the micro light emitting diode pattern layer 17 can be made by a transfer process; in step 102, as shown in fig. 9 (b), a planarization layer 8 is formed on the side of the micro led pattern layer 17 away from the substrate 1, and a via hole 9 is opened from the side of the planarization layer 8 away from the substrate 1; in step 103, as shown in fig. 9 (c), a second electrode layer 18 is formed on the side of the planarization layer 8 away from the substrate board 1, and the second electrode layer 18 is connected to the micro light emitting diode pattern layer 17 through the via hole 9.
As shown in fig. 9 (c) to (e), in an embodiment of the present invention, the manufacturing method further includes forming a light emitting layer 10 on a side of the planarization layer 8 away from the substrate 1, where the light emitting layer 10 includes a lower electrode layer 19, a light emitting device pattern layer 20, and an upper electrode layer 21 sequentially disposed along a direction away from the substrate 1, and the lower electrode layer 19 and the second electrode layer 18 are manufactured in the same layer, so that the manufacturing process can be simplified and the production efficiency can be improved.
In the present embodiment, as shown in fig. 9 (c), a lower electrode layer 19 is formed on the side of the planarization layer 8 away from the substrate base plate 1, and the lower electrode layer 19 and the second electrode layer 18 can be fabricated in the same layer; as shown in fig. 9 (d), a light emitting device pattern layer 20 is formed on the side of the lower electrode layer 19 away from the base substrate 1, wherein the light emitting device pattern layer 20 includes the light emitting device 12 and the pixel defining layer 14; as shown in fig. 9 (e), an upper electrode layer 21 is formed on the side of the light emitting device pattern layer 20 away from the base substrate 1.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (12)
1. A display panel is characterized by comprising a substrate base plate and a plurality of lighting display units arranged on the substrate base plate, wherein each lighting display unit comprises a display unit and a micro light-emitting unit, the micro light-emitting units are used for lighting, and the projections of the display units and the micro light-emitting units on the substrate base plate are not overlapped;
the micro light-emitting unit comprises a first electrode, a micro light-emitting diode and a second electrode which are sequentially arranged along the direction far away from the substrate base plate;
the display panel further comprises a flat layer arranged on one side of the plurality of lighting display units far away from the substrate base plate;
the display unit comprises a light-emitting layer arranged on one side of the flat layer, which is far away from the substrate, and the light-emitting layer comprises a lower electrode, a light-emitting device and an upper electrode which are sequentially arranged along the direction far away from the substrate;
the flat layer is provided with a via hole for avoiding the micro light-emitting unit, and the second electrode of the micro light-emitting unit extends out of the via hole and reaches the surface of one side of the flat layer, which is far away from the substrate base plate.
2. The display panel of claim 1, wherein the display unit is a sub-pixel unit or a pixel unit of the display panel.
3. The display panel according to claim 1, wherein the number of the display units and the micro light-emitting units is the same in each of the illumination display units.
4. The display panel according to claim 1, wherein in each of the illumination display units, at least two of the micro light emitting units are disposed on a periphery of each of the display units.
5. The display panel of claim 4, wherein the at least two micro light emitting devices are uniformly distributed.
6. The display panel of claim 1, wherein the first electrodes of the micro light-emitting cells of the plurality of illuminated display cells are electrically connected; and/or
The second electrodes of the micro light emitting units of the plurality of illumination display units are electrically connected.
7. The display panel of claim 1, wherein the planarization layer has a via hole that clears the micro light-emitting unit, and the second electrode of the micro light-emitting unit extends out of the via hole to a side surface of the planarization layer away from the substrate base plate.
8. The display panel of claim 1, wherein the bottom electrode and the second electrode of the micro light-emitting unit are fabricated in the same layer.
9. The display panel of claim 1, further comprising a reflective layer disposed between the planarization layer and the lower electrode.
10. The display panel of claim 9, wherein the reflective layer comprises a silver reflective layer.
11. A display device comprising the display panel according to any one of claims 1 to 10.
12. A method for manufacturing a display panel according to claim 1, comprising:
sequentially forming a first electrode layer and a micro light-emitting diode pattern layer on a substrate;
forming a flat layer on one side of the micro light-emitting diode pattern layer, which is far away from the substrate;
forming a second electrode layer on one side of the flat layer far away from the substrate base plate;
the manufacturing method further comprises the step of forming a light emitting layer on one side, far away from the substrate, of the flat layer, wherein the light emitting layer comprises a lower electrode layer, a light emitting device pattern layer and an upper electrode layer which are sequentially arranged along the direction far away from the substrate, and the lower electrode layer and the second electrode layer are manufactured in the same layer.
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| CN109585506A (en) * | 2018-11-22 | 2019-04-05 | 武汉华星光电技术有限公司 | OLED with illumination functions shows equipment |
| CN109859644B (en) * | 2019-03-07 | 2020-11-24 | 深圳市华星光电半导体显示技术有限公司 | Display panel and display module |
| CN111863858B (en) * | 2020-06-30 | 2024-04-16 | 上海天马微电子有限公司 | Display panel, driving method thereof and display device |
| TWI794614B (en) | 2020-07-02 | 2023-03-01 | 友達光電股份有限公司 | Display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104952899A (en) * | 2015-06-16 | 2015-09-30 | 友达光电股份有限公司 | Light emitting diode display and method of manufacturing the same |
| CN106206651A (en) * | 2015-05-28 | 2016-12-07 | 美科米尚技术有限公司 | Light emitting display device and manufacture method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106206651A (en) * | 2015-05-28 | 2016-12-07 | 美科米尚技术有限公司 | Light emitting display device and manufacture method thereof |
| CN104952899A (en) * | 2015-06-16 | 2015-09-30 | 友达光电股份有限公司 | Light emitting diode display and method of manufacturing the same |
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