CN109161843A - Mask plate, the preparation method of display base plate, display base plate and display device - Google Patents
Mask plate, the preparation method of display base plate, display base plate and display device Download PDFInfo
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- CN109161843A CN109161843A CN201811073847.7A CN201811073847A CN109161843A CN 109161843 A CN109161843 A CN 109161843A CN 201811073847 A CN201811073847 A CN 201811073847A CN 109161843 A CN109161843 A CN 109161843A
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- viewing area
- base plate
- display base
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/04—Coating on selected surface areas, e.g. using masks
- C23C14/042—Coating on selected surface areas, e.g. using masks using masks
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/24—Vacuum evaporation
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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
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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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- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The present invention provides a kind of mask plate, the preparation method of display base plate, display base plate and display device, belongs to field of display technology.Mask plate of the invention, including mask regions, the viewing area to corresponding display base plate；The viewing area of the display base plate includes main viewing area and the edge viewing area around main viewing area；The outer profile at least partly position of the edge viewing area is arc；The mask regions include: open region and the blocked area around the open region；Wherein, main viewing area of the open region to the correspondence display base plate, edge viewing area of the blocked area to the correspondence display base plate.
Description
Technical field
The invention belongs to field of display technology, and in particular to a kind of mask plate, the preparation method of display base plate, display base plate
And display device.
Background technique
It is also more and more diversified to the appearance requirement of display product with the promotion of display technology, such as fillet mobile phone, circle
The irregular display product in the edges such as wrist-watch, bracelet shows the part side of product since pixel unit is generally arranged in matrix form
Edge region can not place complete pixel, cause to show that the sense of product edge sawtooth is obvious, influence display effect.
The obvious problem of sawtooth sense is shown for above-mentioned edge, proposes gradually decrease close to fringe region in the prior art
N row (or N column) pixel grayscale, to reduce the luminance difference of the not light emitting region of viewing area and its periphery, to alleviate aobvious
Show that product edge shows the obvious problem of sawtooth sense.
And in the prior art, display product generally includes LCD and shows that product and OLED show product.Wherein, LCD product is
Brightness is controlled by backlight, light-emitting area can be controlled by black matrix to realize the gradual control of edge grayscale；And OLED
Product is current drive-type device, and light emission luminance is determined by current density, if vapor deposition area reduces, current density can be higher,
Grayscale can be higher, therefore the adjusting of grayscale can not be realized by adjusting the vapor deposition area of pixel unit.And in the prior art
There is no other methods that can be effectively improved above-mentioned edge and shows the obvious problem of sawtooth sense.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art, display base can be improved by providing one kind
Edges of boards edge shows sawtooth sense, improves the mask plate of user's viewing experience.
Solving technical solution used by present invention problem is a kind of mask plate, including mask regions, to corresponding aobvious
Show the viewing area of substrate；The viewing area of the display base plate includes main viewing area and the edge viewing area around main viewing area；Institute
Stating mask regions includes: open region and the blocked area around the open region；
Wherein, main viewing area of the open region to the correspondence display base plate, the blocked area is to described in correspondence
The edge viewing area of display base plate.
Preferably, the outer profile at least partly position of the edge viewing area is arc.
Preferably, the shape of the open region is identical as the shape of the outer profile of the mask regions.
It is further preferred that the shape of the open region includes round or ellipse.
Preferably, the material of the blocked area includes metal.
Solve the preparation method that technical solution used by present invention problem is a kind of display base plate, the display base
The viewing area of plate includes main viewing area and the edge viewing area around main viewing area；
The preparation method of the display base plate includes:
Using mask plate, auxiliary light emission structure is formed in the main viewing area of substrate by patterning processes；Wherein, the exposure mask
Plate is any one of the above mask plate.
Preferably, described to utilize mask plate, auxiliary light emission structure is formed in the main viewing area of substrate by patterning processes
Step includes:
Mask plate and substrate are aligned, wherein the open region of the mask plate is corresponding with the main viewing area of substrate；
Auxiliary light emission structure is formed in the main viewing area of substrate by evaporation process.
Preferably, the outer profile at least partly position of the edge viewing area is arc.
Preferably, the display base plate is oled substrate；The auxiliary light emission structure be OLED device hole injection layer,
At least one of hole transmission layer, electron transfer layer, electron injecting layer.
Preferably, the auxiliary light emission structure is the hole transmission layer of OLED device.
Solving technical solution used by present invention problem is a kind of display base plate, the viewing area of the display base plate
It is divided into main viewing area and the edge viewing area around main viewing area；
The main viewing area is provided with auxiliary light emission structure, and the edge viewing area is without the auxiliary light emission structure.
Preferably, the outer profile at least partly position of the edge viewing area is arc.
It is further preferred that the shape of the outer profile of the edge viewing area includes round or ellipse.
It is further preferred that the shape of the outer profile of the shape of the outer profile of the main viewing area and the edge viewing area
It is identical.
Preferably, the display base plate is oled display substrate；
The auxiliary light emission structure is the hole transmission layer of OLED device.
Solving technical solution used by present invention problem is a kind of display device, including any one of the above is shown
Substrate.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the mask plate of the embodiment of the present invention；
Fig. 2 is the flow chart of the preparation method of the display base plate of the embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the display base plate of the embodiment of the present invention；
Wherein appended drawing reference are as follows: 1, mask plate；11, open region；12, blocked area；21, main viewing area；22, edge is shown
Area；3, pixel unit.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, with reference to the accompanying drawing and specific embodiment party
Present invention is further described in detail for formula.
Including main viewing area and around main viewing area in the viewing area of the display base plate provided by the embodiment of the present invention
Edge viewing area.The present embodiment especially suitable for the outer profile of edge viewing area at least partly position be arc display base
Plate, but it is not limited to such case；Wherein, viewing area, which refers to, is used to form pixel unit 3 (such as: red, green, blue sub-pix)
Region；The outer profile of edge viewing area namely the overall profile of viewing area.
And the global shape (chamfered shape) of display base plate does not do any restrictions in the present embodiment, can be and viewing area
The identical shape of profile, be also possible to the shape different from the profile of viewing area.
The chamfered shape of viewing area in this present embodiment specifically can be, with the rectangle of circular arc chamfering, sector, ellipse
Circle, circle etc..And understand for convenience in following specific embodiments, therefore using display area as the aobvious of circular display area
Show and be illustrated for substrate, but does not constitute the limitation to the embodiment of the present invention.
Wherein, due to display device gradually narrow frame, therefore preferably the profile of display base plate is designed as and viewing area
The identical shape of profile be therefore the wheel with the profile of display base plate and display area in following specific embodiments
Be illustrated for exterior feature is identical namely display base plate and the profile of viewing area are circle, but are not constituted to of the invention real
Apply the limitation of example.
Embodiment 1:
As shown in Figure 1 to Figure 3, the present embodiment provides a kind of mask plate 1, it can be used for the preparation of display base plate.Wherein, it shows
The shape of substrate can be circle, and viewing area is also round.Mask plate in the present embodiment includes mask regions, and mask regions are being shown
It is corresponding with the viewing area of display base plate in the preparation process of substrate, and shape, size are identical as the shape of viewing area, size.Tool
Body, mask regions include: open region 11 and the blocked area 12 around open region 11；Wherein, open region 11 shows base to corresponding
The main viewing area 21 of plate, edge viewing area 22 of the blocked area 12 to corresponding display base plate.
Mask plate 1 provided in this embodiment can be used for preparing layer structure (the auxiliary hair of the raising luminous efficiency of display base plate
Photo structure), such as the structures such as hole injection layer, hole transmission layer, electron transfer layer, electron injecting layer of oled substrate.
When preparing display base plate using mask plate 1 provided in this embodiment, using open region 11 only in display base plate
Auxiliary light emission structure is formed in main viewing area 21, and so that the edge viewing area 22 of display base plate is not will form this using blocked area 12
Auxiliary light emission structure.To finally make the luminous efficiency of the edge viewing area 22 of display base plate be lower than the luminous effect of main viewing area 21
Rate, namely when display base plate is shown, the brightness of the main viewing area 21 of display base plate is greater than the brightness of edge viewing area 22,
To reduce the luminance difference of edge viewing area 22 Yu non-display area, and then realize oled display substrate by viewing area to non-display area
Luminance transition, improve display base plate in due to pixel unit 3 can not arrange completely caused by edge sawtooth show phenomenon.
In the present embodiment, the shape of the open region 11 of mask plate 1 can limit out by the Internal periphery of blocked area 12.Due to
Mask plate 1 in the prior art does not usually include the blocked area 12 of corresponding edge viewing area 22 in the present embodiment, but open region
11 directly correspond to display base plate entirety viewing area, therefore the mask plate 1 in the present embodiment can pass through mask plate 1 in the prior art
On the basis of, increase blocked area 12 to realize, without preparing new mask plate 1, and then saves the preparation cost of display base plate.
Preferably, the material of blocked area 12 may include metal.It is, of course, understood that mask plate 1 can also be directly prepare again and
At, at this point, the integral structure that blocked area 12 can preferably use same material to be formed with the main structure of mask plate 1.
Specifically, the shape of open region 11 can be designed according to actual needs, such as rectangular, the various shapes such as circle
Shape.Preferably, the shape of outer profile of shape and mask regions of open region 11 is identical, that is, the shape of the open region 11 of mask plate 1
Shape is identical as the shape of the viewing area of display base plate.As shown in figure 3, since the shape of open region 11 is circular, and show base
The pixel unit 3 of plate be usually array arrangement square structure, therefore in viewing area some pixel unit 3 partial region pair
Open region 11 is answered, partial region corresponds to blocked area 12.To, when preparing display base plate using the mask plate 1, can it is above-mentioned these
Forming auxiliary light emission structure in part in pixel unit 3 at corresponding opening area 11, (namely auxiliary light emission structure cannot cover completely
Pixel unit 3).
That is, being formed by display base plate using mask plate 1 provided in this embodiment, it is fully located at main display
Complete auxiliary light emission structure is formed in the pixel unit 3 in area 21, positioned at the boundary of main viewing area 21 and edge viewing area 22
It is formed with part auxiliary light emitting structure in the pixel unit 3 at place, is fully located at not auxiliary in the pixel unit 3 of edge viewing area 22
Help light emitting structure.To which when display base plate is shown, the brightness for being fully located at the pixel unit 3 of main viewing area 21 can be big
In the brightness for the pixel unit 3 for being fully located at edge viewing area 22, and at the boundary line of main viewing area 21 and edge viewing area 22
Pixel unit 3 be less than be fully located at main viewing area 21 pixel unit 3 brightness, and be greater than be fully located at edge viewing area
The brightness of 22 pixel unit 3 can make display base plate while the edge sawtooth for improving display base plate shows phenomenon in turn
Luminance difference transition it is gentler, the visual experience effect of user is more preferable.
Embodiment 2:
As shown in Fig. 2, the present embodiment provides a kind of preparation methods of display base plate, wherein with display base plate for OLED base
Plate, shape is circle, and its viewing area is also to be illustrated for circle.The viewing area of display base plate includes main viewing area 21
With the edge viewing area 22 around main viewing area 21.In the preparation method of display base plate provided in this embodiment, embodiment 1 is utilized
The mask plate 1 of offer prepares the auxiliary light emission device of oled substrate, such as hole injection layer, the hole transport of OLED device
At least one of layer, electron transfer layer, electron injecting layer.In order to be clearly demonstrated to the present embodiment, in following the description
It is illustrated for preparing hole transmission layer, but is not constituted to the embodiment of the present invention by the mask plate 1 provided using embodiment 1
Limitation.It is understood that the mask plate 1 that embodiment 1 provides can also be used for above-mentioned other auxiliary light emission devices.
The preparation method of the display base plate includes:
S1, the anode that OLED device is formed on the substrate.
Specifically, in this step anode can be formed by techniques such as sputterings.Specifically, greatly thickness can be 10nm- to sun
150nm, material can be Al, Mg, Ag, ITO, IZO etc..
S2, hole injection layer is formed on the substrate.
It prepares to form hole injection layer specifically, vacuum evaporation process can be used in step S2.The material of hole block characters implanted layer
Material can be the organic material or polymer for having phosphorescent dopants (P) to adulterate.
S3, using mask plate 1, form auxiliary light emission structure in the main viewing area 21 of substrate by patterning processes；Wherein, it covers
The mask plate 1 provided in 1 embodiment 1 of diaphragm plate.
Step S3 can include:
S31, mask plate 1 is aligned with substrate, mask plate 1 is made to be located at substrate side to be filmed, and mask plate 1 is opened
Mouth region 11 is corresponding with the main viewing area 21 of substrate；S32, hole transport is formed in the main viewing area 21 of substrate by evaporation process
Layer.The substrate for being placed with mask plate 1 can be specifically placed in vacuum evaporation chamber and be deposited, thus the corresponding opening in substrate
The position (main viewing area 21) in area 11 forms hole transmission layer.
S4, the organic function layer that the OLED device such as luminescent layer, electron transfer layer, electron injecting layer are sequentially formed in substrate
Structure.
Specifically, step S3 can also form above-mentioned organic functional laminar structure by techniques such as inkjet printing, vacuum evaporations.
Wherein, luminescent layer can form undoped fluorescence by the luminescent material with cavity transmission ability not less than electron transport ability
Luminous organic material is made, or using the organic material system for the doping fluorescent material being made of fluorescent dopants and host material
At, or the organic material for the doping phosphor material being made of phosphorescent dopants with host material is used to be made.Electron transfer layer
Material is the higher material of electron mobility, preferably 2- (4- xenyl) -5- phenyl oxadiazoles (PBD), (the 1- naphthalene of 2,5- bis-
Base) -1,3,5- oxadiazoles (BND), any one in 2,4,6- triple phenoxyl -1,3,5- triazine (TRZ).Electron injecting layer
Material is lithium fluoride, sodium fluoride, potassium fluoride, rubidium fluoride RbF, cesium fluoride, lithia, any one in lithium metaborate.
S5, cathode is formed in the substrate for be formed with electron injecting layer.
Specifically, in this step cathode can be formed by vacuum evaporation process.Wherein, cathode generallys use low work function gold
Belong to material, such as: the alloy of lithium, magnesium, calcium, strontium, aluminium, indium etc. or above-mentioned metal and copper, gold, silver is made；Or very using one layer
Thin buffer insulation layer (such as lithium fluoride LiF, cesium carbonate CsCO3) and above-mentioned metal or alloy are made.
In the preparation method of display base plate provided in this embodiment, made in substrate using the mask plate 1 that embodiment 1 provides
Standby auxiliary light emission structure, makes to form hole transmission layer in the main viewing area 21 of display base plate, and edge viewing area 22 not will form
Hole transmission layer.When to make display base plate work, luminous efficiency the shining lower than main viewing area 21 of edge viewing area 22
Efficiency, namely when display base plate is shown, the brightness of the main viewing area 21 of display base plate is greater than the bright of edge viewing area 22
Degree, reduces the luminance difference of edge viewing area 22 and non-display area, so realization oled display substrate by viewing area to non-display
The luminance transition in area is improved edge sawtooth caused by can not being arranged completely due to pixel unit 3 and shows phenomenon.
Embodiment 3:
As shown in figure 3, the present embodiment provides a kind of display base plate, it can be according to the preparation method preparation provided in embodiment 2
It is formed.The viewing area of the display base plate includes main viewing area 21 and the edge viewing area 22 around main viewing area 21；Wherein, main aobvious
Show and be provided with auxiliary light emission structure in area 21, and is not provided with the auxiliary light emission structure in edge viewing area 22.
Display base plate provided in this embodiment is especially suitable for oled substrate, specifically, auxiliary light emission structure can be OLED
At least one of the hole injection layer of device, hole transmission layer, electron transfer layer, electron injecting layer.Preferably, auxiliary light emission
Structure is hole transmission layer.
By taking auxiliary light emission structure is hole transmission layer as an example, hole transport is formed in the main viewing area 21 of display base plate
Layer, and edge viewing area 22 does not have hole transmission layer, causes the luminous efficiency of OLED device in edge viewing area 22 aobvious lower than main
Show the luminous efficiency of OLED device in area 21.To, when display base plate is shown, the main viewing area 21 of display base plate it is bright
Degree is greater than the brightness of edge viewing area 22, can reduce the luminance difference of edge viewing area 22 Yu non-display area, Jin Ershi in this way
Existing display base plate by viewing area to non-display area luminance transition, improve oled substrate since pixel unit 3 can not arrange
Edge sawtooth shows phenomenon caused by complete.
Preferably, the shape of main viewing area 21 is identical as the shape of the viewing area of display base plate.It is i.e. as shown in figure 3, main aobvious
Show that the shape in area 21 is also circular, and pixel unit 3 is usually the square structure of array arrangement, therefore have one in display base plate
3 half of pixel unit is divided to be located at main viewing area 21, half is located at edge viewing area 22, and master is only located in these pixel units 3
The part of viewing area 21 is formed with hole transmission layer.
That is, being fully located in the pixel unit 3 of main viewing area 21 and being formed in the display base plate of the present embodiment
Whole hole transmission layer is formed with part sky in the pixel unit 3 of main viewing area 21 and the intersection of edge viewing area 22
Cave transport layer, being fully located in the pixel unit 3 of edge viewing area 22 does not have hole transmission layer, thus in display, complete position
The brightness for being fully located at the pixel unit 3 of edge viewing area 22 can be greater than in the brightness of the pixel unit 3 of main viewing area 21, and led
Viewing area 21 is with the pixel unit 3 at the boundary line of edge viewing area 22 less than the pixel unit for being fully located at main viewing area 21
3 brightness, and it is greater than the brightness for being fully located at the pixel unit 3 of edge viewing area 22, to be shown now improving edge sawtooth
As while, keep the luminance difference transition of display base plate gentler, the visual experience effect of user is more preferable.
Embodiment 4:
The present embodiment provides a kind of display devices, including the display base plate provided in embodiment 3.
Since the display device of the present embodiment includes the display base plate provided in embodiment 3, thus compared with the prior art in
OLED display, the edge viewing area of the display device of the present embodiment and the luminance difference of non-display area are smaller, integral edge
Sawtooth shows that phenomenon is less obvious, and the visual experience effect of user is more preferable.
Specifically, display device in the present embodiment can be with are as follows: mobile phone, tablet computer, television set, display, notebook
Any products or components having a display function such as computer, advertisement screen.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, however the present invention is not limited thereto.For those skilled in the art, essence of the invention is not being departed from
In the case where mind and essence, various changes and modifications can be made therein, these variations and modifications are also considered as protection scope of the present invention.
Claims (16)
1. a kind of mask plate, which is characterized in that
Viewing area including mask regions, to corresponding display base plate；The viewing area of the display base plate includes main viewing area and ring
Around the edge viewing area of main viewing area；The mask regions include: open region and the blocked area around the open region；
Wherein, main viewing area of the open region to the correspondence display base plate, the blocked area is to the correspondence display
The edge viewing area of substrate.
2. mask plate according to claim 1, which is characterized in that
The outer profile at least partly position of the edge viewing area is arc.
3. mask plate according to claim 1, which is characterized in that
The shape of the open region is identical as the shape of the outer profile of the mask regions.
4. mask plate according to claim 3, which is characterized in that
The shape of the open region includes round or ellipse.
5. mask plate according to claim 1, which is characterized in that
The material of the blocked area includes metal.
6. a kind of preparation method of display base plate, which is characterized in that
The viewing area of the display base plate includes main viewing area and the edge viewing area around main viewing area；
The preparation method of the display base plate includes:
Using mask plate, auxiliary light emission structure is formed in the main viewing area of substrate by patterning processes；Wherein, the mask plate is
Mask plate described in any one of Claims 1-4.
7. the preparation method of display base plate according to claim 6, which is characterized in that
It is described to utilize mask plate, include: the step of the main viewing area of substrate forms auxiliary light emission structure by patterning processes
Mask plate and substrate are aligned, wherein the open region of the mask plate is corresponding with the main viewing area of substrate；
Auxiliary light emission structure is formed in the main viewing area of substrate by evaporation process.
8. the preparation method of display base plate according to claim 6, which is characterized in that
The outer profile at least partly position of the edge viewing area is arc.
9. the preparation method of display base plate according to claim 8, which is characterized in that
The display base plate is oled substrate；
The auxiliary light emission structure is in the hole injection layer of OLED device, hole transmission layer, electron transfer layer, electron injecting layer
At least one.
10. the preparation method of display base plate according to claim 9, which is characterized in that
The auxiliary light emission structure is the hole transmission layer of OLED device.
11. a kind of display base plate, which is characterized in that
Main viewing area and the edge viewing area around main viewing area are divided into the display of the display base plate；
The main viewing area is provided with auxiliary light emission structure, and the edge viewing area is without the auxiliary light emission structure.
12. display base plate according to claim 11, which is characterized in that
The outer profile at least partly position of the edge viewing area is arc.
13. display base plate according to claim 12, which is characterized in that
The shape of the outer profile of the edge viewing area includes round or ellipse.
14. display base plate according to claim 12, which is characterized in that
The shape of the outer profile of the main viewing area is identical as the shape of outer profile of the edge viewing area.
15. display base plate according to claim 11, which is characterized in that
The display base plate is oled display substrate；
The auxiliary light emission structure is the hole transmission layer of OLED device.
16. a kind of display device, which is characterized in that
Including display base plate described in any one of claim 11 to 15.
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| CN201811073847.7A CN109161843B (en) | 2018-09-14 | 2018-09-14 | Mask plate, preparation method of display substrate, display substrate and display device |
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| CN201811073847.7A CN109161843B (en) | 2018-09-14 | 2018-09-14 | Mask plate, preparation method of display substrate, display substrate and display device |
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| CN111200072A (en) * | 2019-04-17 | 2020-05-26 | 友达光电股份有限公司 | Light emitting device |
| CN115679254A (en) * | 2022-09-08 | 2023-02-03 | 京东方科技集团股份有限公司 | Mask plate, display substrate and display device |
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