CN109659451A - OLED display panel and preparation method thereof - Google Patents
OLED display panel and preparation method thereof Download PDFInfo
- Publication number
- CN109659451A CN109659451A CN201910087914.9A CN201910087914A CN109659451A CN 109659451 A CN109659451 A CN 109659451A CN 201910087914 A CN201910087914 A CN 201910087914A CN 109659451 A CN109659451 A CN 109659451A
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- display panel
- oled display
- organic solvent
- layer
- common transport
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- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000003960 organic solvent Substances 0.000 claims abstract description 41
- 230000005540 biological transmission Effects 0.000 claims abstract description 39
- 230000027756 respiratory electron transport chain Effects 0.000 claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 7
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 18
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 12
- 238000007641 inkjet printing Methods 0.000 claims description 8
- CHLICZRVGGXEOD-UHFFFAOYSA-N 1-Methoxy-4-methylbenzene Chemical compound COC1=CC=C(C)C=C1 CHLICZRVGGXEOD-UHFFFAOYSA-N 0.000 claims description 6
- HHNHBFLGXIUXCM-GFCCVEGCSA-N cyclohexylbenzene Chemical compound [CH]1CCCC[C@@H]1C1=CC=CC=C1 HHNHBFLGXIUXCM-GFCCVEGCSA-N 0.000 claims description 6
- XLSZMDLNRCVEIJ-UHFFFAOYSA-N methylimidazole Natural products CC1=CNC=N1 XLSZMDLNRCVEIJ-UHFFFAOYSA-N 0.000 claims description 6
- -1 methylimidazole ketone compounds Chemical class 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 5
- WGGCPEPBIIPVCN-UHFFFAOYSA-N benzene butyl formate Chemical compound C(=O)OCCCC.C1=CC=CC=C1 WGGCPEPBIIPVCN-UHFFFAOYSA-N 0.000 claims 2
- 238000007639 printing Methods 0.000 description 10
- XSIFPSYPOVKYCO-UHFFFAOYSA-N butyl benzoate Chemical compound CCCCOC(=O)C1=CC=CC=C1 XSIFPSYPOVKYCO-UHFFFAOYSA-N 0.000 description 8
- 238000004090 dissolution Methods 0.000 description 8
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 238000004020 luminiscence type Methods 0.000 description 5
- 238000007740 vapor deposition Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005401 electroluminescence Methods 0.000 description 4
- 230000005525 hole transport Effects 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 3
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 150000004982 aromatic amines Chemical class 0.000 description 1
- 150000001716 carbazoles Chemical class 0.000 description 1
- 235000015111 chews Nutrition 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 150000007857 hydrazones Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 229920000548 poly(silane) polymer Polymers 0.000 description 1
- 229920000123 polythiophene Polymers 0.000 description 1
- 150000003219 pyrazolines Chemical class 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 125000005259 triarylamine group Chemical group 0.000 description 1
- AAAQKTZKLRYKHR-UHFFFAOYSA-N triphenylmethane Chemical compound C1=CC=CC=C1C(C=1C=CC=CC=1)C1=CC=CC=C1 AAAQKTZKLRYKHR-UHFFFAOYSA-N 0.000 description 1
- 238000003079 width control Methods 0.000 description 1
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
This application discloses a kind of OLED display panels and preparation method thereof, preparation method includes: production pixel defining layer, and each pixel region defined in pixel defining layer makes OLED luminescent device, wherein production OLED luminescent device includes: that each pixel region defined on the step of pixel defining layer and in the pixel defining layer covers the common transport that a flood is used for each OLED luminescent device, and common transport is electron transfer layer or hole transmission layer；And organic solvent is formed in the common transport of step, organic solvent dissolves the common transport and the common transport between adjacent pixel regions is disconnected.According to the preparation method of the OLED display panel of the embodiment of the present application, is dissolved by organic solvent and disconnect common transport, cross-interference issue existing for high-resolution OLED display panel can be solved, mention high display quality, and method is simple, cost is relatively low.
Description
Technical field
The present disclosure relates generally to display technology fields, and in particular to OLED display panel and preparation method thereof.
Background technique
Organic Light Emitting Diode (Organic Light Emitting Diodes, OLED) display has self-luminous, drives
It is dynamic that voltage is low, luminous efficiency is high, the response time is short, clarity and contrast height, wide viewing angle, use temperature range extensively, it can be achieved that
It many advantages, such as Flexible Displays and large area total colouring, is known as being the display device for most having development potentiality by industry.
The working principle of OLED display panel is between the anode and cathode under the action of electric field, and hole passes through hole transport
Layer is transferred to luminescent layer, and electronics is transferred to luminescent layer by electron transfer layer, hole and electronics within luminescent layer it is compound in turn
It shines.OLED display panel is usually by the trichromatic display effect mixed to realize different color of RGB, therefore each OLED
Light emitting pixel includes tri- luminescence units of RGB, and each luminescence unit can be transferred through driving circuit and individually control.
With the raising of display panel resolution ratio, the number of luminescence unit is being continuously increased in unit area, luminescence unit
Between spacing distance constantly reduce；In addition, being used for transmission hole transmission layer and the transmission in hole to improve display resolution
The excellent transmission material of many transmission performances is introduced in the electron transfer layer of electronics.Reduce and hole biography in luminescence unit spacing
Transverse current in the case that the transmission performance of defeated layer or electron transfer layer is constantly promoted, in same layer between different colours pixel
Increase, lead to them while lighting generation crosstalk, especially obvious under low-light level, it reduce the aobvious of OLED display panel
Show quality.
Summary of the invention
Brief summary of the present invention is given below, in order to provide the basic reason about certain aspects of the invention
Solution.It should be appreciated that this summary is not an exhaustive overview of the invention.It is not intended to determine key of the invention
Or pith, nor is it intended to limit the scope of the present invention.Its purpose only provides certain concepts in simplified form, with
This is as the preamble in greater detail discussed later.
In view of the above problems, the application proposes a kind of preparation method of OLED display panel, the method in first aspect
The following steps are included: production pixel defining layer, and each pixel region defined in pixel defining layer make OLED photophore
Part, wherein production OLED luminescent device on the step of pixel defining layer and in the pixel defining layer the following steps are included: define
Each pixel region out covers the common transport that a flood is used for each OLED luminescent device, and the common transport is electronics biography
Defeated layer or hole transmission layer；And organic solvent is formed in the common transport of the step, the organic solvent is molten
Solving the common transport disconnects the common transport between adjacent pixel regions.
According to the preparation method of the OLED display panel of the embodiment of the present application, is dissolved by organic solvent and disconnect common transmission
Layer, can solve cross-interference issue existing for high-resolution OLED display panel, mention high display quality, and method is simple, cost is relatively low.
According to the specific embodiment of the application, the organic solvent is printed to by the step using inkjet printing mode
On, the trace of the organic solvent is around each pixel region.
According to the specific embodiment of the application, the organic solvent is printed to and forms thread on step, thread
Trace is around each pixel region.
According to the specific embodiment of the application, the width of the thread is 0.5-3um.
According to the specific embodiment of the application, the organic solvent is selected from one of following substance: toluene, dimethylbenzene,
P-methyl anisole, butyl benzoate, cyclohexyl benzene, methylimidazole ketone compounds.
The application second aspect also provides a kind of OLED display panel, and the OLED display panel includes: pixel defining layer；
And OLED luminescent device；The OLED luminescent device includes the common transport of electron transfer layer or hole transmission layer；In addition to
It is described other than the breaking part that organic solvent by can dissolve the common transport is formed on the step of the pixel defining layer
Each pixel region that the step is completely covered in common transport and the pixel defining layer defines.
It is aobvious can to solve high-resolution OLED by disconnecting common transport according to the OLED display panel of the embodiment of the present application
Show cross-interference issue existing for panel, mentions high display quality.
According to the specific embodiment of the application, in above-mentioned oled panel, the breaking part is around each pixel region.
According to the specific embodiment of the application, in above-mentioned oled panel, the breaking part is at threadiness.
According to the specific embodiment of the application, in above-mentioned oled panel, the linear width of the breaking part is 0.5-
3um。
According to the specific embodiment of the application, in above-mentioned oled panel, the organic solvent in following substance one
Kind: toluene, dimethylbenzene, p-methyl anisole, butyl benzoate, cyclohexyl benzene, methylimidazole ketone compounds.
Detailed description of the invention
Below with reference to the accompanying drawings illustrate embodiments of the invention, the invention will be more easily understood it is above and its
Its objects, features and advantages.Component in attached drawing is intended merely to show the principle of the present invention.In the accompanying drawings, identical or similar
Technical characteristic or component will be indicated using same or similar appended drawing reference.
Fig. 1 is the flow chart according to the preparation method of the OLED display panel of the application one embodiment；
Fig. 2-3 be shown respectively according to Fig. 1 embodiment preparation OLED display panel 1 make hole transmission layer progress it is molten
Solve preceding and dissolved schematic diagram；
Fig. 3 embodiment is shown respectively before having made electron transfer layer and having been dissolved and dissolved schematic diagram in Fig. 4-5；
Fig. 6 is the dissolved top view of embodiment illustrated in fig. 5.
Specific embodiment
Embodiments of the present invention will be described below with reference to the accompanying drawings.It is retouched in an attached drawing of the invention or a kind of embodiment
The elements and features stated can be combined with elements and features shown in one or more other attached drawings or embodiment.It answers
When note that for purposes of clarity, being omitted known to unrelated to the invention, those of ordinary skill in the art in attached drawing and explanation
Component and processing expression and description.
Fig. 1 is the flow chart according to the preparation method of the OLED display panel of the application one embodiment.This method includes
Following steps:
S100: pixel defining layer is made on substrate；
S200: OLED luminescent device is made in each pixel region that pixel defining layer defines；
Wherein, wherein production OLED luminescent device S200 the following steps are included:
S210: each pixel region defined on the step of pixel defining layer and in the pixel defining layer covers a flood
For the common transport of each OLED luminescent device, common transport is hole transmission layer and/or electron transfer layer；And
S220: forming organic solvent in the common transport of step, and organic solvent dissolution common transport makes adjacent
Common transport between pixel region disconnects.
According to the preparation method of the above-mentioned OLED display panel of above-described embodiment, public biography is disconnected by organic solvent dissolution
Defeated layer can solve cross-interference issue existing for high-resolution OLED display panel, propose high display quality, and inkjet printing methods letter
Single, cost is relatively low.
After having made pixel defining layer, a kind of detailed step for making OLED luminescent device is as follows: in pixel defining layer
Vapor deposition successively makes hole injection layer and hole transmission layer using solution coating method, wherein in the step of pixel defining layer
Each pixel region that is upper and defining in the pixel defining layer covers the hole transmission layer that a flood is used for each OLED luminescent device.
Then organic solvent is printed on the hole transmission layer of step, the hole transmission layer between the adjacent pixel regions on step is molten
Solution disconnects.In a particular embodiment, the electrical connection for only disconnecting hole transmission layer, can meet making an uproar for OLED luminescent device
Sound requirement.In a particular embodiment, hole transmission layer and hole injection layer can also all be dissolved disconnection, further to subtract
Small crosstalk noise.Then the region vapor deposition or inkjet printing electroluminescence layer between pixel defining layer step.
In a particular embodiment, above-mentioned printing dissolution operation can be carried out again after having made electroluminescence layer.It connects
, electron transfer layer, electron injection and cathode layer are deposited on hole transmission layer and electroluminescence layer, prepares complete OLED
Device
The detailed step of another kind production OLED luminescent device is as follows: after having made pixel defining layer, in pixel defining layer
Upper vapor deposition successively makes hole injection layer and hole transmission layer, vapor deposition or printing and making electroluminescent using solution coating method
Layer, then vapor deposition makes electron transfer layer.Wherein, when making hole transmission layer and electron transfer layer, in the platform of pixel defining layer
Each pixel region defined on rank and in the pixel defining layer covers the hole transport that a flood is used for each OLED luminescent device
Layer and electron transfer layer.Then print organic solvent on the electron transfer layer of step, by the adjacent pixel regions on step it
Between hole transmission layer and electron transfer layer all dissolve disconnection.
According to specific embodiment, can be printed in aforesaid operations dissolve electron transfer layer, hole transmission layer and
Hole injection layer blocks the transverse current between different pixels region to further decrease crosstalk noise.
Specifically, the oled display substrate for having prepared hole injection layer and hole transmission layer is transferred to nitrogen environment
Under printer board on.Its controllable print volume is less than 1pL (p liter), by printing line width control in 0.5-3um, in pixel
The upper surface inkjet printing for defining the top stage of layer can dissolve the organic solvent of hole transmission layer, so that the trace of organic solvent
Around each pixel region, so ensure that the interface channel after subsequent dissolution operates between each pixel region disconnects.Complete spray
After ink printing, organic solvent gradually dissolves areas of disconnection out in the upper surface of hole transmission layer, to disconnect hole transmission layer
Electrical connecting passage between pixel can be such that hole transmission layer disconnects on the step of pixel defining layer.
Similarly, the printing that the oled display substrate for having prepared electron transfer layer can be transferred under nitrogen environment
On machine board, above-mentioned inkjet printing and the operation using organic solvent dissolution disconnection are then carried out.
Areas of disconnection can have various shapes.Preferably, above-mentioned organic solvent is printed as threadiness, this realization is convenient
Fast, and transverse current between different pixels can effectively be blocked.
The material of hole transmission layer mainly has poly-phenylene vinylene (ppv) class, polythiophene class, polysilanes, triphenylmethane, three
Arylamine class, pyrazolines, chews azole, carbazoles, butadiene type etc. at hydrazone class.Wherein, tri-arylamine group material has preferable to electricity
Sub- property, lower ionization potential, higher hole mobility, preferable dissolubility and amorphous film-forming, stronger fluorescence
Performance and photostability.Electron transport layer materials also select electronic transmission performance with higher, and good film-forming property has at room temperature
There is higher stability, preferable deliquescent material.Due to electron transfer layer and hole transmission layer all by polarity it is less strong
Organic compound material composition, so inkjet printing can choose the similar organic solvent of comparison.Select not strong organic of polarity
Solvent has preferable dissolubility to electron and hole transport layer.Optionally, printable organic solvent is in following solvent
A kind of or several combinations: toluene, dimethylbenzene, p-methyl anisole, butyl benzoate, cyclohexyl benzene, methylimidazole ketone
Close object.Diversified organic solvent increases the range of organic solvent selection, and can be according to organic solvent and hole transmission layer
Material selection realize that different dissolution disconnects effect.
Fig. 2-3 is shown respectively to carry out after having made hole transmission layer according to the OLED display panel 1 of Fig. 1 embodiment preparation
Printing dissolution is preceding and prints dissolved schematic diagram.The OLED display panel 1 includes: the pixel defining layer 3 on substrate 2, and
OLED luminescent device 4；OLED luminescent device 4 includes hole injection layer 40, hole transmission layer 41, electroluminescence layer 42.In Fig. 2,
Each pixel region that the step of pixel defining layer 3 is completely covered in hole transmission layer 41 and the pixel defining layer defines.Fig. 3
In, after printing organic solvent, what hole transmission layer 41 was formed on step with the organic solvent by dissolvable hole transmission layer
Breaking part 5.
Fig. 4-5 is shown respectively to carry out before printing dissolution and printing according to Fig. 3 embodiment electron transfer layer that continues to complete
Dissolved schematic diagram.Fig. 4, in 5 it can be seen that OLED luminescent device 4 further comprises electron hole transport layer 43.In Fig. 4,
Each pixel region that the step of pixel defining layer 3 is completely covered in electron transfer layer 43 and the pixel defining layer defines, Fig. 5
In, (through organic solvent injection device 7) after printing organic solvent, electron transfer layer 43 has by can dissolve having for electron transfer layer
The breaking part 6 that solvent is formed on step.
It can be solved according to the OLED display panel of the embodiment of the present application by disconnecting the electrical connecting passage of common transport
Cross-interference issue existing for high-resolution OLED display panel, mentions high display quality.
According to above-described embodiment of the application, in OLED display panel, the common transport is disconnected region into lines
Shape.
Fig. 6 shows the dissolved top view of part-structure of OLED display panel shown in Fig. 3.
According to above-described embodiment of the application, in OLED display panel, the line thickness is 0.5-3um.
According to above-described embodiment of the application, in OLED display panel, the areas of disconnection can dissolve by inkjet printing
The organic solvent of common transport is formed.
According to above-described embodiment of the application, in OLED display panel, the organic solvent in following substance one
Kind: toluene, dimethylbenzene, p-methyl anisole, butyl benzoate, cyclohexyl benzene, methylimidazole ketone compounds.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of preparation method of OLED display panel, which is characterized in that the method includes making pixel defining layer, Yi Ji
Each pixel region that pixel defining layer defines makes OLED luminescent device, wherein production OLED luminescent device includes following step
It is rapid:
Each pixel region defined on the step of pixel defining layer and in the pixel defining layer covers a flood for each
The common transport of OLED luminescent device, the common transport are electron transfer layer or hole transmission layer；And
Organic solvent is formed in the common transport of the step, the organic solvent, which dissolves the common transport, to be made
The common transport obtained between adjacent pixel regions disconnects.
2. the preparation method of OLED display panel according to claim 1, which is characterized in that
The organic solvent is printed on the step using inkjet printing mode, the trace of the organic solvent is around each picture
Plain region.
3. the preparation method of OLED display panel according to claim 2, which is characterized in that print the organic solvent
Thread is formed on to step, the trace of thread is around each pixel region.
4. the preparation method of OLED display panel according to claim 3, which is characterized in that
The width of the thread is 0.5-3um.
5. the preparation method of OLED display panel described in any one of -4 according to claim 1, which is characterized in that
The organic solvent is selected from one of following substance or a variety of combinations: toluene, dimethylbenzene, p-methyl anisole, benzene
Butyl formate, cyclohexyl benzene, methylimidazole ketone compounds.
6. a kind of OLED display panel, which is characterized in that the OLED display panel includes:
Pixel defining layer；And
OLED luminescent device；
The OLED luminescent device includes the common transport of electron transfer layer or hole transmission layer；In addition to by can dissolve the public affairs
Other than the breaking part that the organic solvent of transport layer is formed on the step of the pixel defining layer altogether, the common transport is complete
Cover each pixel region that the step and the pixel defining layer define.
7. OLED display panel according to claim 6, which is characterized in that
The breaking part is around each pixel region.
8. OLED display panel according to claim 7, which is characterized in that the breaking part is at threadiness.
9. OLED display panel according to claim 8, which is characterized in that the linear width of the breaking part is 0.5-
3um。
10. the OLED display panel according to any one of claim 6-9, which is characterized in that
The organic solvent is selected from one of following substance or a variety of combinations: toluene, dimethylbenzene, p-methyl anisole, benzene
Butyl formate, cyclohexyl benzene, methylimidazole ketone compounds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910087914.9A CN109659451A (en) | 2019-01-29 | 2019-01-29 | OLED display panel and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910087914.9A CN109659451A (en) | 2019-01-29 | 2019-01-29 | OLED display panel and preparation method thereof |
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| CN109659451A true CN109659451A (en) | 2019-04-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114361373A (en) * | 2021-12-06 | 2022-04-15 | 合肥维信诺科技有限公司 | OLED display panel and manufacturing method thereof |
| CN116437742A (en) * | 2023-05-12 | 2023-07-14 | 南京国兆光电科技有限公司 | Pixel definition layer structure of OLED display device and preparation method thereof |
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| CN101202328A (en) * | 2006-12-13 | 2008-06-18 | 三星Sdi株式会社 | Electronic device and manufacturing method thereof |
| CN105895664A (en) * | 2016-05-31 | 2016-08-24 | 上海天马有机发光显示技术有限公司 | Display panel, manufacturing method and electronic equipment |
| US20170098687A1 (en) * | 2015-10-06 | 2017-04-06 | Samsung Display Co., Ltd. | Light emitting display device and method for fabricating the same |
-
2019
- 2019-01-29 CN CN201910087914.9A patent/CN109659451A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101202328A (en) * | 2006-12-13 | 2008-06-18 | 三星Sdi株式会社 | Electronic device and manufacturing method thereof |
| US20170098687A1 (en) * | 2015-10-06 | 2017-04-06 | Samsung Display Co., Ltd. | Light emitting display device and method for fabricating the same |
| CN105895664A (en) * | 2016-05-31 | 2016-08-24 | 上海天马有机发光显示技术有限公司 | Display panel, manufacturing method and electronic equipment |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114361373A (en) * | 2021-12-06 | 2022-04-15 | 合肥维信诺科技有限公司 | OLED display panel and manufacturing method thereof |
| CN116437742A (en) * | 2023-05-12 | 2023-07-14 | 南京国兆光电科技有限公司 | Pixel definition layer structure of OLED display device and preparation method thereof |
| CN116437742B (en) * | 2023-05-12 | 2024-02-06 | 南京国兆光电科技有限公司 | OLED display device structure and preparation method thereof |
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