CN116249396B - Display panel and preparation method thereof - Google Patents
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- CN116249396B CN116249396B CN202310519798.XA CN202310519798A CN116249396B CN 116249396 B CN116249396 B CN 116249396B CN 202310519798 A CN202310519798 A CN 202310519798A CN 116249396 B CN116249396 B CN 116249396B
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- 238000002360 preparation method Methods 0.000 title abstract description 4
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- 239000000758 substrate Substances 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 12
- 238000004806 packaging method and process Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 7
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- 229910052709 silver Inorganic materials 0.000 description 4
- 239000004332 silver Substances 0.000 description 4
- 238000005530 etching Methods 0.000 description 3
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 3
- 238000004544 sputter deposition Methods 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 2
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000000231 atomic layer deposition Methods 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 229910000423 chromium oxide Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
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- 229910004205 SiNX Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
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Abstract
The application provides a display panel and a preparation method of the display panel, and relates to the technical field of display, wherein an anode layer of the display panel comprises a plurality of anode units which are arranged at intervals, a boundary conducting layer is arranged above a pixel definition layer arranged around each anode unit, the boundary conducting layer comprises a plurality of first conducting units, and a first eave structure is arranged above the first conducting units; the upper surface of at least part of the first eave structure is provided with a first light-emitting unit, a channel is arranged above the first eave structure corresponding to the first light-emitting unit, and the first light-emitting unit is contacted with the corresponding first conductive unit through the corresponding channel; the upper surface of the first light-emitting unit is covered with a metal unit; the light shielding layer comprises a plurality of light shielding units which are arranged at intervals, and each light shielding unit is positioned above the corresponding first light emitting unit; each first conductive unit forms peep-proof pixels with the corresponding first light-emitting units and metal units. The technical scheme provided by the application can realize the peep-proof function.
Description
Technical Field
The application relates to the technical field of display, in particular to a display panel and a preparation method of the display panel.
Background
Display panels based on light emitting devices such as organic light emitting diodes (Organic Light Emitting Diode, OLEDs) are increasingly being used in products such as computers and mobile phones because of their light weight, energy saving, wide viewing angle, wide color gamut, and high contrast.
Because of the large amount of personal information associated with mobile phones and computers, how to prevent peeping is a problem that needs to be solved by those skilled in the art once the leakage results are serious.
Disclosure of Invention
In view of the above, the present application provides a display panel and a method for manufacturing the display panel to realize the peep-proof function.
In order to achieve the above object, in a first aspect, an embodiment of the present application provides a display panel, including: the LED display device comprises a substrate base plate, a driving layer, an anode layer, a light-emitting layer, a cathode layer, a packaging layer and a shading layer which are arranged from bottom to top;
the anode layer comprises a plurality of anode units which are arranged at intervals, a boundary conducting layer is arranged above a pixel definition layer which is arranged around each anode unit, the boundary conducting layer comprises a plurality of first conducting units, and a first eave structure is arranged above the first conducting units;
the upper surface of at least part of the first eave structure is provided with a first light-emitting unit, a channel is arranged above the first eave structure corresponding to the first light-emitting unit, and the first light-emitting unit is contacted with the corresponding first conductive unit through the corresponding channel; the upper surface of the first light-emitting unit is covered with a metal unit;
the light shielding layer comprises a plurality of light shielding units which are arranged at intervals, the light shielding units correspond to the first light emitting units one by one, and each light shielding unit is positioned above the corresponding first light emitting unit;
each first conductive unit forms peep-proof pixels with the corresponding first light-emitting unit and metal unit.
As an optional implementation manner of the embodiment of the application, a second conductive unit is further arranged above each first eave structure provided with a channel, a second eave structure is arranged above each second conductive unit, and each metal unit is overlapped with the corresponding second conductive unit.
As an alternative implementation manner of the embodiment of the present application, the light emitting layer includes a plurality of second light emitting units, each of the second light emitting units forms a display pixel with the corresponding anode unit and cathode layer, and one or two of the first light emitting units is disposed above a pixel defining layer between at least some adjacent display pixels.
As an optional implementation manner of the embodiment of the present application, two first light emitting units are disposed above a pixel defining layer between adjacent display pixels;
and a second conductive unit is arranged above each first eave structure provided with a channel, one side of each second eave structure, which is far away from the nearest display pixel, is provided with a second eave structure above each second conductive unit, and each metal unit is overlapped with the corresponding second conductive unit.
As an alternative implementation manner of the embodiment of the present application, the peep-proof pixel is a ring-shaped structure disposed around the display pixel.
As an optional implementation manner of the embodiment of the present application, an upper surface of each first eave structure is covered with a first light emitting unit.
As an optional implementation manner of the embodiment of the present application, each peep-proof pixel is turned on or turned off by a peep-proof driving signal;
for each peep-proof pixel, when the peep-proof pixel is turned on, the light emitting unit emits light; when the peep-proof pixel is closed, the light-emitting unit does not emit light.
As an optional implementation manner of the embodiment of the present application, the display panel includes a plurality of peep-proof pixel sets, and peep-proof pixels in the same peep-proof pixel set are connected in series.
As an optional implementation manner of the embodiment of the present application, a projection area of the light shielding unit on the substrate is larger than a projection area of the corresponding first light emitting unit on the substrate.
In a second aspect, an embodiment of the present application provides a method for preparing a display panel according to the first aspect or any one of the first aspects, where the method includes:
forming a driving layer on a substrate, and forming an anode layer on the driving layer, wherein the anode layer comprises a plurality of anode units which are arranged at intervals;
forming a pixel defining layer around each anode unit, forming a boundary conductive layer above the pixel defining layer, the boundary conductive layer comprising a plurality of first conductive units, forming a first eave structure above each first conductive unit;
forming a light emitting layer over the anode layer and the pixel defining layer, and forming a cathode layer over the light emitting layer;
forming a first light-emitting unit above the channel and the corresponding first eave structure, forming a metal unit above the first light-emitting unit, wherein the first light-emitting unit is contacted with the corresponding first conductive unit, and each first conductive unit forms an peep-proof pixel with the corresponding first light-emitting unit and the metal unit;
and forming a packaging layer above the cathode layer, the first eave structure and the metal units, and forming a light shielding layer above the packaging layer, wherein the light shielding layer comprises a plurality of light shielding units arranged at intervals, the light shielding units are in one-to-one correspondence with the first light emitting units, and each light shielding unit is positioned above the corresponding first light emitting unit.
The technical scheme provided by the embodiment of the application comprises a substrate, a driving layer, an anode layer, a luminescent layer, a cathode layer, a packaging layer and a shading layer which are arranged from bottom to top. The anode layer comprises a plurality of anode units arranged at intervals, a boundary conducting layer is arranged above a pixel definition layer arranged around each anode unit, the boundary conducting layer comprises a plurality of first conducting units (the cathode layers are lapped on the first conducting units, the first conducting units are used for outputting fixed voltage to the cathode layers and reducing the voltage drop of cathode wiring), and a first eave structure is arranged above the first conducting units. The upper surface of at least part first eave structure is provided with first light emitting unit, and the channel has been seted up to the top of first eave structure that first light emitting unit corresponds, and first light emitting unit contacts with corresponding first conductive unit through corresponding channel, and the upper surface of first light emitting unit covers has the metal element. The shading layer comprises a plurality of shading units which are arranged at intervals, the shading units are in one-to-one correspondence with the first light emitting units, and each shading unit is located above the corresponding first light emitting unit. Each first conductive unit forms a peep-proof pixel with the corresponding first light-emitting unit and metal unit, and the peep-proof pixel can form mixed light with the display pixel of the display panel, so that the display panel displays different colors and information reading is interfered, and the peep-proof function is realized; in addition, compared with the prior art that the anode and the cathode of the peep-proof pixel are needed to be newly prepared, the scheme provided by the application directly multiplexes the first conductive unit to serve as the anode (the anode can also be used as the cathode) of the peep-proof pixel, so that the space can be saved, and the photomask corresponding to the anode for preparing the peep-proof pixel can be reduced, thereby reducing the manufacturing cost.
Drawings
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the application;
fig. 2 is a schematic diagram of a positional relationship between peep-proof pixels and display pixels according to an embodiment of the present application;
FIG. 3 is a schematic diagram illustrating another positional relationship between a peep-proof pixel and a display pixel according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of another display panel according to an embodiment of the present application;
FIG. 5 is a partial top view of the display panel of FIG. 4;
fig. 6 is a schematic flow chart of a method for manufacturing a display panel according to an embodiment of the application.
Reference numerals illustrate:
10-a substrate base; 20-a driving layer;
30-an anode layer; 40-a light emitting layer;
50-a cathode layer; 60-packaging layers;
70-a pixel definition layer; 80-a boundary conductive layer;
90-a first eave structure; 100-a first light emitting unit;
110-metal units; 120-a light shielding layer;
130-a second conductive element; 140-a second eave structure;
31-an anode unit;
41-a second light emitting unit;
81-a first conductive element;
91-channel;
121-shading units.
Detailed Description
Embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. The terminology used in the description of the embodiments of the application is for the purpose of describing particular embodiments of the application only and is not intended to be limiting of the application. The following embodiments may be combined with each other, and some embodiments may not be repeated for the same or similar concepts or processes.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present application, as shown in fig. 1, the display panel provided in this embodiment may include: the light emitting device includes a substrate base plate 10, a driving layer 20, an anode layer 30, a light emitting layer 40, a cathode layer 50, and an encapsulation layer 60.
The substrate 10 may be a rigid substrate or a flexible substrate, the material of the rigid substrate may be glass, and the material of the flexible substrate may be a polymer material such as polyimide.
The driving layer 20 is disposed above the substrate 10 and may include a plurality of thin film transistors (Thin Film Transistor, TFT) for driving the light emitting layer 40 to emit light.
The anode layer 30 is located above the driving layer 20, and the material of the anode layer 30 may be conductive metal oxide, such as Indium Tin Oxide (ITO), or the like, and the material of the anode layer 30 may also be metal, such as Al (aluminum), au (gold), ag (silver), or the like.
The anode layer 30 may include a plurality of anode units 31 disposed at intervals, and the pixel defining layer 70 is disposed around each anode unit 31. The material of the pixel defining layer 70 may be organic polyimide, or may be inorganic SiNx, siOx, siOxNx, or the like.
The light emitting layer 40 covers the anode layer 30 and the pixel defining layer 70, and the light emitting layer 40 may include a plurality of second light emitting cells 41, each second light emitting cell 41 forming one display pixel with the corresponding anode cell 31 and cathode layer 50, and the light emitting layer 40 may include light emitting materials of a plurality of colors such as red light, green light, blue light, and the like.
The cathode layer 50 is coated on the light emitting layer 40, and the material of the cathode layer 50 may be a metal material such as Al (aluminum), au (gold), ag (silver), mg (magnesium) -Ag alloy, etc., and the material of the cathode layer 50 may also be a transparent conductive metal oxide, etc.
The boundary conductive layer 80 is disposed above the pixel defining layer 70, the boundary conductive layer 80 may include a plurality of first conductive units 81, the cathode layer 50 is lapped on the first conductive units 81, the first conductive units 81 are used for outputting a fixed voltage to the cathode layer 50 so as to reduce a voltage drop generated by cathode routing, and the material of the first conductive units 81 may be copper, silver or other metals.
The first eave structure 90 is disposed above the first conductive unit 81, and the first eave structure 90 is used for protecting the overlapping area of the cathode layer 50 and the first conductive unit 81 during maskless evaporation, so that the overlapping area of the cathode layer 50 and the first conductive unit 81 is not affected by etching liquid during photolithography patterning.
The upper surface of at least part of the first eave structure 90 is provided with a first light-emitting unit 100, a channel 91 is formed above the first eave structure 90 corresponding to the first light-emitting unit 100, and the first light-emitting unit 100 is contacted with the corresponding first conductive unit 81 through the corresponding channel 91.
The channel 91 may be formed in the middle of the first eave structure 90, or may be formed in another position above the first eave structure 90, which is not limited in this embodiment.
The first light emitting unit 100 may include light emitting materials of various colors of red, green, blue, yellow, white, and the like.
The upper surface of the first light emitting unit 100 is covered with a metal unit 110. Each first conductive unit 81 forms a peep-proof pixel with the corresponding first light emitting unit 100 and metal unit 110. The first conductive unit 81 may be an anode of the peep-proof pixel, and the corresponding metal unit 110 is a cathode of the peep-proof pixel; the first conductive unit 81 may also be a cathode of the peep-proof pixel, and the corresponding metal unit 110 is an anode of the peep-proof pixel. In the present embodiment, the first conductive unit 81 is taken as an anode of the peep-proof pixel, and the metal unit 110 is taken as a cathode of the peep-proof pixel for illustration.
The peep-proof pixel can emit red light, green light, blue light, yellow light, white light and other light with any high brightness and strong interference, so that mixed light is formed with the display pixel of the display panel, the display panel displays different colors, information reading is interfered, and the peep-proof function is realized.
In order to further improve the peep-proof effect, the upper surface of each first eave structure 90 may be covered with the first light emitting unit 100, so that each display pixel is surrounded by the peep-proof pixel, and light emitted by each display pixel can form mixed light with adjacent peep-proof pixels, so that the overall light mixing effect is improved.
Since one or two conductive units may be present between adjacent display pixels, at most two light emitting units are present between adjacent display pixels, i.e. at most two peep-preventing pixels are present between adjacent display pixels.
Fig. 2 is a schematic diagram of a positional relationship between peep-proof pixels and display pixels according to an embodiment of the present application, where, as shown in fig. 2, the peep-proof pixels may be arranged around the display pixels or may be arranged in some directions of the display pixels. So that one or two peep-proof pixels exist between at least part of adjacent display pixels, thereby realizing the peep-proof effect.
Fig. 3 is a schematic diagram of another positional relationship between a peep-proof pixel and a display pixel according to an embodiment of the present application, where, as shown in fig. 3, the peep-proof pixel may form a ring structure around the display pixel. The number of the display pixels surrounded by the peep-proof pixels may be 1 or more, and the number of the display pixels surrounded by each annular peep-proof pixel may be the same or may be partially the same or all different.
The peep-proof pixel can be opened or closed through the peep-proof driving signal, so that when a user is in normal use, the peep-proof function can be selected to be closed, and when a password or other operations related to personal information are input, the peep-proof function can be selected to be opened, and the user experience can be greatly improved.
For each peep-proof pixel, when the peep-proof pixel is started, the corresponding light-emitting unit emits light and forms mixed light with the adjacent display pixels, so that the peep-proof function is realized; when the peep-proof pixel is closed, the corresponding light-emitting unit does not emit light, and the display panel displays normally.
Each peep-proof pixel can be connected in series, so that all peep-proof pixels can be turned on or off only by one switch, wiring can be greatly reduced, and cost is reduced. The peep-proof pixels in different areas can also form a peep-proof pixel set, the peep-proof pixels in the same peep-proof pixel set are connected in series, and the peep-proof pixels in the same peep-proof pixel set are controlled by a switch, so that the partition peep-proof of the display panel is realized.
The encapsulation layer 60 is positioned over the cathode layer 50, the first eave structure 90, and the metal unit 110, and the material of the encapsulation layer 60 may include silicon nitride, silicon oxynitride, or a combination thereof, or the like.
The light shielding layer 120 is disposed above the encapsulation layer 60, and the light shielding layer 120 may include a plurality of light shielding units 121 disposed at intervals, where the light shielding units 121 are in one-to-one correspondence with the first light emitting units 100, and each light shielding unit 121 is disposed above the corresponding first light emitting unit 100. The material of the light shielding unit 121 may be chromium, chromium oxide, black resin, or the like.
The projection area of the light shielding unit 121 on the substrate 10 may be equal to the projection area of the corresponding first light emitting unit 100 on the substrate 10. The projection area of the light shielding unit 121 on the substrate 10 may be larger than the projection area of the first light emitting unit 100 on the substrate 10, so that when the peep-proof pixel is turned on, the light mixing angle can be reduced in the direction perpendicular to the substrate 10, that is, the normal display angle is increased, so that even if the viewing angle of the user is not perpendicular to the display panel, the display panel can normally display only within the normal display angle of the display panel, and thus the user experience can be improved.
Fig. 4 is a schematic structural diagram of another display panel according to an embodiment of the present application, as shown in fig. 4, a second conductive unit 130 may be further disposed above each first eave structure 90 with a channel 91,
a second eave structure 140 is disposed above the second conductive units 130, and each metal unit 110 may overlap with the corresponding second conductive unit 130. The second conductive unit 130 may output a fixed voltage to the metal unit 110 to reduce a voltage drop generated by the wiring of the metal unit 110, and the material of the second conductive unit 130 may be copper, silver, or other metals.
A second eave structure 140 may be further disposed above the second conductive unit 130, where the second eave structure 140 is used to protect a region where the metal unit 110 overlaps the corresponding second conductive unit 130 during maskless evaporation, so that the region where the metal unit 110 overlaps the corresponding second conductive unit 130 is not affected by the etching solution during the photolithography of the pattern.
The second eave structure 140 is used for disconnecting the metal unit 110 from the encapsulation layer 60 above the second eave structure 140, so that the encapsulation layer 60 can well protect the metal unit 110, and the metal unit 110 is not affected by etching liquid during pattern lithography.
When two first light emitting units 100 are disposed above the pixel defining layer 70 between adjacent display pixels (i.e., two peep-proof pixels are disposed between adjacent display pixels), the second conductive unit 130 above the first eave structure may be disposed on a side far away from the nearest display pixel, so that the influence on the light emitted by the nearest display pixel may be reduced, and the display effect may be improved.
Fig. 5 is a partial plan view of the display panel of fig. 4, in which, as shown in fig. 5, a cathode signal and an anode signal of a display pixel are respectively transmitted through a signal line 1 and a signal line 2, and a cathode signal and an anode signal of a peep-proof pixel are transmitted through a signal line 3 (a signal line 4) and a signal line 1. Because the light-emitting layers of the display pixels are separated by the conductive units, the crosstalk phenomenon caused by the starting voltage difference among the light-emitting units with different colors can not occur during low-gray-scale display of the screen.
Fig. 6 is a schematic flow chart of a method for manufacturing a display panel according to an embodiment of the present application, and as shown in fig. 6, the method for manufacturing a display panel according to an embodiment of the present application may include the following steps:
s110, forming a driving layer on the substrate base plate, and forming an anode layer on the driving layer.
Specifically, the driving layer 20 may be formed on the base substrate 10 first, and then the anode layer 30 may be formed on the driving layer 20 through a sputtering process, and the anode layer 30 may include a plurality of anode units 31 disposed at intervals.
S120, forming a pixel definition layer around each anode unit, forming a boundary conducting layer above the pixel definition layer, and forming a first eave structure above the boundary conducting layer.
Specifically, the pixel defining layer 70 may be formed around each anode unit 31 using a plasma enhanced chemical vapor deposition, sputtering, atomic layer deposition, or the like, and then the boundary conductive layer 80 is formed over the pixel defining layer 70, the boundary conductive layer 80 including a plurality of first conductive units 81, and then the first eave structure 90 may be formed over each first conductive unit 81.
And S130, forming a light-emitting layer above the anode layer and the pixel definition layer, and forming a cathode layer above the light-emitting layer.
Specifically, the light emitting layer 40 and the cathode layer 50 may be sequentially formed at the areas where the anode layer 30 and the pixel defining layer 70 are not covered using an evaporation process.
S140, forming a channel above at least part of the first eave structure, forming a first light-emitting unit above the channel and the corresponding first eave structure, and forming a metal unit above the first light-emitting unit.
Specifically, at least a portion of the first eave structure 90 may be etched to form a channel 91 over the first eave structure 90, and then the first light emitting unit 100 and the metal unit 110 may be sequentially formed over the channel 91 and the corresponding first eave structure 90 using an evaporation process. The first light emitting units 100 are in contact with the corresponding first conductive units 81, and each first conductive unit 81 forms a peep-proof pixel with the corresponding first light emitting unit 100 and metal unit 110.
S150, forming a second conductive unit above each first eave structure provided with the channel, and forming a second eave structure on the second conductive unit.
Specifically, the second conductive units 130 may be formed over each of the first eave structures 90 having the channels 91 formed therein such that each of the metal units 110 overlaps with the corresponding second conductive unit 130, and then the second eave structures 140 are formed on the respective second conductive units 130.
S160, forming a packaging layer above the cathode layer, the first eave structure, the metal unit and the second eave structure, and forming a light shielding layer above the packaging layer.
Specifically, the encapsulation layer 60 may be formed on the surfaces of the cathode layer 50, the first eave structure 90 and the metal unit 110 using a plasma enhanced chemical vapor deposition, sputtering, atomic layer deposition, etc., and then the light shielding layer 120 may be formed on the encapsulation layer 60 using a plasma enhanced chemical vapor deposition, and the material of the light shielding layer 120 may be chromium, chromium oxide, black resin, etc. The light shielding layer 120 may include a plurality of light shielding units 121 disposed at intervals, the light shielding units 121 are in one-to-one correspondence with the first light emitting units 100, and each light shielding unit 121 is located above the corresponding first light emitting unit 100.
The technical scheme provided by the embodiment of the application comprises a substrate, a driving layer, an anode layer, a luminescent layer, a cathode layer, a packaging layer and a shading layer which are arranged from bottom to top. The anode layer comprises a plurality of anode units arranged at intervals, a boundary conducting layer is arranged above a pixel definition layer arranged around each anode unit, the boundary conducting layer comprises a plurality of first conducting units (the cathode layers are lapped on the first conducting units, the first conducting units are used for outputting fixed voltage to the cathode layers and reducing the voltage drop of cathode wiring), and a first eave structure is arranged above the first conducting units. The upper surface of at least part first eave structure is provided with first light emitting unit, and the channel has been seted up to the top of first eave structure that first light emitting unit corresponds, and first light emitting unit contacts with corresponding first conductive unit through corresponding channel, and the upper surface of first light emitting unit covers has the metal element. The shading layer comprises a plurality of shading units which are arranged at intervals, the shading units are in one-to-one correspondence with the first light emitting units, and each shading unit is located above the corresponding first light emitting unit. Each first conductive unit forms a peep-proof pixel with the corresponding first light-emitting unit and metal unit, and the peep-proof pixel can form mixed light with the display pixel of the display panel, so that the display panel displays different colors and information reading is interfered, and the peep-proof function is realized; in addition, compared with the prior art that the anode and the cathode of the peep-proof pixel are needed to be newly prepared, the scheme provided by the application directly multiplexes the first conductive unit to serve as the anode (the anode can also be used as the cathode) of the peep-proof pixel, so that the space can be saved, and the photomask corresponding to the anode for preparing the peep-proof pixel can be reduced, thereby reducing the manufacturing cost.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.
In addition, the dimensional relationships between the components in the drawings are merely illustrative, and do not reflect actual dimensional relationships between the components.
In the description of the present application, the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus are not to be construed as limiting the present application.
In the description of the present application, it should be noted that, 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; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art in a specific case.
It should be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
In the description of the present application, unless otherwise indicated, "/" means that the objects associated in tandem are in a "or" relationship, e.g., A/B may represent A or B; the "and/or" in the present application is merely an association relationship describing the association object, and indicates that three relationships may exist, for example, a and/or B may indicate: there are three cases, a alone, a and B together, and B alone, wherein a, B may be singular or plural.
Also, in the description of the present application, unless otherwise indicated, "a plurality" means two or more than two. "at least one of the following" or similar expressions thereof, means any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or plural.
Furthermore, in the description of the present specification and the appended claims, the terms "first," "second," "third," and the like are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments described herein may be implemented in other sequences than those illustrated or otherwise described herein.
Reference in the specification to "one embodiment" or "some embodiments" or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments" unless expressly specified otherwise.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.
Claims (9)
1. A display panel, comprising: the LED display device comprises a substrate base plate, a driving layer, an anode layer, a light-emitting layer, a cathode layer, a packaging layer and a shading layer which are arranged from bottom to top;
the anode layer comprises a plurality of anode units which are arranged at intervals, a boundary conducting layer is arranged above a pixel definition layer which is arranged around each anode unit, the boundary conducting layer comprises a plurality of first conducting units, and a first eave structure is arranged above the first conducting units;
the upper surface of at least part of the first eave structure is provided with a first light-emitting unit, a channel is arranged above the first eave structure corresponding to the first light-emitting unit, and the first light-emitting unit is contacted with the corresponding first conductive unit through the corresponding channel; the upper surface of the first light-emitting unit is covered with a metal unit;
a second conductive unit is arranged above each first eave structure provided with a channel, a second eave structure is arranged above each second conductive unit, and each metal unit is overlapped with the corresponding second conductive unit;
the light shielding layer comprises a plurality of light shielding units which are arranged at intervals, the light shielding units correspond to the first light emitting units one by one, and each light shielding unit is positioned above the corresponding first light emitting unit;
each first conductive unit forms peep-proof pixels with the corresponding first light-emitting unit and metal unit.
2. The display panel of claim 1, wherein the light emitting layer comprises a plurality of second light emitting cells, each of the second light emitting cells forming one display pixel with a corresponding anode cell and cathode layer, one or both of the first light emitting cells being disposed over a pixel defining layer between at least some of the adjacent display pixels.
3. The display panel according to claim 2, wherein two of the first light emitting units are disposed above a pixel defining layer between adjacent display pixels;
and a second conductive unit is arranged above each first eave structure provided with a channel, one side of each second eave structure, which is far away from the nearest display pixel, is provided with a second eave structure above each second conductive unit, and each metal unit is overlapped with the corresponding second conductive unit.
4. The display panel of claim 2, wherein the privacy pixel is a ring-shaped structure disposed around the display pixel.
5. The display panel of claim 1, wherein an upper surface of each of the first eave structures is covered with a first light emitting unit.
6. The display panel of claim 1, wherein each of the peep-proof pixels is turned on or off by a peep-proof driving signal;
for each peep-proof pixel, when the peep-proof pixel is turned on, the light emitting unit emits light; when the peep-proof pixel is closed, the light-emitting unit does not emit light.
7. The display panel of claim 6, wherein the display panel comprises a plurality of sets of peep-proof pixels, the peep-proof pixels in the same set of peep-proof pixels being connected in series.
8. The display panel according to any one of claims 1-7, wherein a projected area of the light shielding unit on the substrate is larger than a projected area of the corresponding first light emitting unit on the substrate.
9. A method for manufacturing a display panel according to any one of claims 1 to 8, wherein the method comprises:
forming a driving layer on a substrate, and forming an anode layer on the driving layer, wherein the anode layer comprises a plurality of anode units which are arranged at intervals;
forming a pixel defining layer around each anode unit, forming a boundary conductive layer above the pixel defining layer, the boundary conductive layer comprising a plurality of first conductive units, forming a first eave structure above each first conductive unit;
forming a light emitting layer over the anode layer and the pixel defining layer, and forming a cathode layer over the light emitting layer;
forming a first light-emitting unit above the channel and the corresponding first eave structure, forming a metal unit above the first light-emitting unit, wherein the first light-emitting unit is contacted with the corresponding first conductive unit, and each first conductive unit forms an peep-proof pixel with the corresponding first light-emitting unit and the metal unit;
forming a second conductive unit above each first eave structure provided with a channel, forming a second eave structure above the second conductive units, and overlapping each metal unit with the corresponding second conductive unit;
and forming a packaging layer above the cathode layer, the first eave structure and the metal units, and forming a light shielding layer above the packaging layer, wherein the light shielding layer comprises a plurality of light shielding units arranged at intervals, the light shielding units are in one-to-one correspondence with the first light emitting units, and each light shielding unit is positioned above the corresponding first light emitting unit.
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| CN111863874A (en) * | 2019-04-26 | 2020-10-30 | 群创光电股份有限公司 | Display device |
| CN115172425A (en) * | 2022-07-12 | 2022-10-11 | 上海天马微电子有限公司 | Display panel, driving method thereof and display device |
| CN115884633A (en) * | 2023-03-03 | 2023-03-31 | 惠科股份有限公司 | Display panel and preparation method thereof |
| CN115942814A (en) * | 2022-12-30 | 2023-04-07 | 惠科股份有限公司 | display device |
| CN115988905A (en) * | 2023-03-21 | 2023-04-18 | 惠科股份有限公司 | Pixel structure and display panel |
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| JP2003316291A (en) * | 2002-02-25 | 2003-11-07 | Semiconductor Energy Lab Co Ltd | Emission device |
| CN111863874A (en) * | 2019-04-26 | 2020-10-30 | 群创光电股份有限公司 | Display device |
| CN115172425A (en) * | 2022-07-12 | 2022-10-11 | 上海天马微电子有限公司 | Display panel, driving method thereof and display device |
| CN115942814A (en) * | 2022-12-30 | 2023-04-07 | 惠科股份有限公司 | display device |
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