CN106653807A - Surface mounting type OLED display unit device, display screen and manufacturing method thereof - Google Patents
Surface mounting type OLED display unit device, display screen and manufacturing method thereof Download PDFInfo
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- CN106653807A CN106653807A CN201611086288.4A CN201611086288A CN106653807A CN 106653807 A CN106653807 A CN 106653807A CN 201611086288 A CN201611086288 A CN 201611086288A CN 106653807 A CN106653807 A CN 106653807A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/805—Electrodes
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2102/00—Constructional details relating to the organic devices covered by this subclass
- H10K2102/301—Details of OLEDs
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
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Abstract
The invention discloses a surface mounting type OLED display unit device, a display screen and a manufacturing method thereof, and belongs to the field of OLED display. The surface mounting type OLED display unit device comprises a first electrode and a second electrode which are arranged in parallel. An insulating layer is arranged between the first electrode and the second electrode. The edge of the first electrode and the second electrode is provided with a first edge layer and a second edge layer which form a groove structure with the insulating layer respectively. The groove structure formed by the first edge layer and the insulating layer is provided with OLED light-emitting material connected with the upper surface of the first electrode. The upper surface of the OLED light-emitting material is provided with an electrode connecting layer which is connected with the second electrode through the surface of the insulating layer. Compared with the devices in the prior art, the device has the characteristics of being easy to drive, enhanced in yield rate, easy to restore, convenient to operate and reduced in use cost so as to prolong the service life of large-area OLED display.
Description
Technical field
The present invention relates to OLED display fields, particularly relate to a kind of SMD OLED display unit device, display screen and its
Preparation method.
Background technology
OLED display is using several light emitting pixels and drives the luminous driving plate of light emitting pixel to constitute, each pixel
For an OLED display device, wherein, OLED display device can be by three kinds of light emitting OLED materials of red, green, blue (three primary colors)
The full-color display part of composition is superimposed up and down, and the both sides up and down of three kinds of light emitting OLED materials are provided with and each illuminating OLED
The corresponding positive and negative electrode of material, in the positive and negative electrode of three kinds of light emitting OLED materials different voltages, the electric current difference of generation are applied
After flowing through three kinds of OLED luminescent materials, it becomes possible to make three kinds of light emitting OLED materials send ruddiness, green glow and the indigo plant of varying strength value
Light, so as to the Overlapping display for passing through three kinds of colors goes out the color of needs, as shown in Figure 1；OLED display device can also be by one
The monochrome display part that light emitting OLED materials are constituted is planted, the principle of luminosity of monochrome display part is identical with full-color display part.
Belong to current mode display device because OLED shows, the luminosity of display device is controlled by by the electric current of device
Density is determined, and in existing manufacture craft, needs the both sides up and down that positive and negative electrode is arranged on OLED material, and this requires to drive
Dynamic circuit is extremely complex, this will cause large area drive backboard yield reduce, also, EL make in process management also and its
Difficulty, is easily caused large scale and shows that making yield further reduces, or even cannot apply.Further, since technology stability,
Distinctive environmental sensitivity in OLED display device technique, and the distinctive life problems of OLED display device so that in OLED
In large-area displays, though can make that perfect display screen is obtained, but after a period of time use, dead point (not showing),
Dim spot and short dot or Jing often occur, due to existing manufacture craft in, be by several OLED display units and positive and negative electrode
Driving plate is directly made into integration, it is impossible to repairing to individual defects easily and effectively, can only more renew screen, price and its high
It is expensive.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of SMD OLED display unit device, display screen and its making
Method, the present invention have drive simple, yield to improve, repair it is simple, be easy to operate, reduce use cost, and the big face of prolongation
The characteristics of service life that product OLED shows.
To solve above-mentioned technical problem, it is as follows that the present invention provides technical scheme：
A kind of SMD OLED display unit device, including the first electrode and second electrode that are set up in parallel, described first
Be provided between electrode and second electrode insulating barrier, the first electrode and second electrode edge be respectively arranged with it is described absolutely
Edge layer constitutes the first edge layer and second edge layer of trench structure；
The upper table with the first electrode is provided with the trench structure that the first edge layer is constituted with the insulating barrier
The OLED luminescent materials of face connection, the upper surface of the OLED luminescent materials is provided with the surface of insulating layer with described the
The connection electrode layer of two electrodes connection.
Further, the upper surface of the connection electrode layer, first edge layer and second edge layer is provided with for encapsulating
Encapsulating material, the encapsulating material is inorganic encapsulated material or organic packaging materials.
Further, the inorganic encapsulated material is the layer of the SiO2 or SiNx formation that thickness is 10-3000nm,
Or the layer that SiO2 and SiNx build up；
The organic packaging materials are the structural membranes that the epoxy resin or acryl resin that thickness is 10-3000nm is formed
Layer, or the layer that the copolymer or mixture of epoxy resin and acryl resin is formed.
Further, the first electrode includes that the first silver electrode is transparent with first be deposited in first silver electrode
Conductive material, the second electrode includes the second silver electrode and the second electrically conducting transparent material being deposited in second silver electrode
Material, the thickness of first silver electrode and the second silver electrode is 1-500nm, first transparent conductive material and second transparent
The thickness of conductive material is 1-500nm；
The connection electrode layer is transparent conductive material.
Further, the insulating barrier, first edge layer and second edge layer are inorganic passivation layer or are organic blunt
Change layer, wherein：The layer that the inorganic passivation layer is formed for SiO2 or SiNx, or the structural membrane that SiO2 and SiNx build up
Layer；
The organic passivation layer is the layer formed using resin.
A kind of display screen, including backboard and some above-mentioned SMD OLED display unit devices are driven, the driving back of the body
Backboard anode and backboard negative electrode are provided with plate, the first electrode and second electrode of the SMD OLED display unit device is equal
The backboard anode and backboard negative electrode are connected respectively by conducting resinl.
Further, the backboard anode and backboard negative electrode are correspondingly arranged at respectively the first electrode and second electrode
Lower section；
Or, the backboard anode include being disposed on first electrode two ends lower section and with the first electrode
The first anode and second plate of two ends connection, the backboard negative electrode is arranged on the lower section of the second electrode.
A kind of preparation method of above-mentioned SMD OLED display unit device, it is characterised in that include：
Step 1：The first electrode and second electrode being set up in parallel is formed on substrate；
Step 2：Deposition covers the first electrode and the pixel of second electrode defines layer on substrate；
Step 3：Peel off first electrode and the corresponding pixel in second electrode top and define layer, expose first electrode and second electric
Pole, makes pixel define layer and formed and is arranged on the insulating barrier between the first electrode and second electrode and to be arranged on described first electric
The first edge layer and second edge layer at the edge of pole and second electrode, the insulating barrier with first edge layer and second edge
Layer forms trench structure respectively with the first electrode and second electrode as bottom；
Step 4：Formed in the trench structure that the first edge layer is constituted with the insulating barrier and the first electrode
Upper surface connection OLED luminescent materials；
Step 5：The upper surface for defining layer and second electrode in the OLED luminescent materials, pixel deposits described for connecting
The connection electrode layer that the negative electrode of OLED luminescent materials is connected with second electrode；
Step 6：The surface for defining layer in the connection electrode layer and pixel arranges encapsulating material；
Step 7：Cutting forms some settings SMD OLED display unit device on the substrate.
Further, the step 1 is further：Using wet on the substrate constituted using alkali-free glass or flexible substrate
Method is etched or the wet method processing procedure of mode of printing forms the first electrode and second electrode being set up in parallel；
The step 2 is further：
On substrate the inorganic passivation layer of the first electrode and second electrode is covered as described using CVD process deposits
Pixel defines layer；
Or, having for the first electrode and second electrode is covered using inkjet printing or coating process deposition on substrate
Machine passivation layer defines layer as the pixel；
In the step 3, the stripping first electrode and the corresponding pixel in second electrode top define layer, expose first
Electrode and second electrode are further：
First electrode is peeled off using dry etching or direct exposure imaging and the corresponding pixel in second electrode top defines layer,
Expose first electrode and second electrode.
The step 4 is further：
In the trench structure that the first edge layer is constituted with the insulating barrier, using evaporation mode or solution process side
Formula forms the OLED luminescent materials being connected with the upper surface of the first electrode.
The display screen that a kind of preparation method using above-mentioned SMD OLED display unit device is further realized makes
Method, after the step 7, including：
Step 8：The first electrode and second electrode of the SMD OLED display unit device are passed through respectively conducting resinl
It is connected with the backboard anode and backboard negative electrode of the driving backboard.
The invention has the advantages that：
In present invention design, the negative pole of OLED luminescent materials is connected by connection electrode layer with second electrode, so that the
One electrode and second electrode are located at the homonymy of the OLED display unit device, so, to the OLED display unit device
During driving, it is only necessary to the bottom surface of the OLED display unit device is provided with one and connects with the first electrode and second electrode
The driving backboard for connecing, the type of drive of the present invention is simple, and be applicable not only to monochrome display part be also applied for it is full-color
Display device, it is to avoid positive and negative electrode is arranged on drive circuit caused by the both sides up and down of OLED luminescent materials in prior art
Extremely complex problem.
The present invention makes OLED display unit device deposit as an independent unit using unique electrode arrangements design
In, such design, the quality screening to OLED display unit device can not only be accomplished and be combined to realize difference
Display purpose, show yield issues in making so as to effectively avoid traditional large-area OLEDs, and can realize
OLED display unit device and the design for disassembly for driving backboard, such that it is able to the bad luminescence unit of replacing easily and effectively,
Not only repair simple but also be easy to operation, the present invention can repair capsule can greatly reduce use cost, extend large area
The service life that OLED shows.Further, since the architectural characteristic of the present invention, the process management in OLED display unit element manufacturing
Difficulty is greatly reduced, and further increases the yield that large-area OLEDs show.
To sum up, compared with prior art, the present invention have drive simple, yield to improve, repair it is simple, be easy to operate, drop
Low use cost, and extend large-area OLEDs show service life the characteristics of.
Description of the drawings
Fig. 1 is the structural representation of the OLED display device of prior art；
Fig. 2 is the structural representation of the SMD OLED display unit device of the present invention；
Fig. 3 is a kind of structural representation of embodiment of the display screen of the present invention；
Fig. 4 is the structural representation of another kind of embodiment of the display screen of the present invention；
Fig. 5 is the schematic flow sheet of the preparation method of the SMD OLED display unit device of the present invention；
The structural representation of the step of Fig. 6 is the preparation method of the SMD OLED display unit device of the present invention 1；
The structural representation of the step of Fig. 7 is the preparation method of the SMD OLED display unit device of the present invention 2；
The structural representation of the step of Fig. 8 is the preparation method of the SMD OLED display unit device of the present invention 3；
The structural representation of the step of Fig. 9 is the preparation method of the SMD OLED display unit device of the present invention 4；
The structural representation of the step of Figure 10 is the preparation method of the SMD OLED display unit device of the present invention 5；
The structural representation of the step of Figure 11 is the preparation method of the SMD OLED display unit device of the present invention 6；
The structural representation of the step of Figure 12 is the preparation method of the SMD OLED display unit device of the present invention 7；
Figure 13 be the SMD OLED display unit device of the present invention preparation method in carry out the structure of strippable substrate and show
It is intended to.
Specific embodiment
To make the technical problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and tool
Body embodiment is described in detail.
On the one hand, the present invention provides a kind of SMD OLED display unit device, as shown in Fig. 2 including being set up in parallel
First electrode 11 and second electrode 12, are provided with insulating barrier 13, the He of first electrode 11 between first electrode 11 and second electrode 12
The edge of second electrode 12 is respectively arranged with and constitutes the first edge layer 14 and second edge layer 15 of trench structure with insulating barrier 13；
It is provided with the trench structure that first edge layer 14 is constituted with insulating barrier 13 and is connected with the upper surface of first electrode 11
OLED luminescent materials 16, the upper surface of OLED luminescent materials 16 is provided with the surface of insulating barrier 13 and is connected with second electrode 12
Connection electrode layer 17.
In present invention design, the negative pole of OLED luminescent materials 16 is connected by connection electrode layer 17 with second electrode 12, from
And make first electrode 11 and second electrode 12 be located at the homonymy of OLED display unit device, so, to OLED display unit device
When part drives, it is only necessary to the bottom surface of OLED display unit device is provided with one and is connected with first electrode 11 and second electrode 12
Driving backboard 2, the type of drive of the present invention is simple, and be applicable not only to monochrome display part be also applied for it is full-color aobvious
Show device, it is to avoid positive and negative electrode is arranged on drive circuit caused by the both sides up and down of OLED luminescent materials in prior art non-
Normal complicated problem.
The present invention makes OLED display unit device deposit as an independent unit using unique electrode arrangements design
In, such design, the quality screening to OLED display unit device can not only be accomplished and be combined to realize difference
Display purpose, show yield issues in making so as to effectively avoid traditional large-area OLEDs, and can realize
OLED display unit device and the design for disassembly for driving backboard 2, such that it is able to the bad luminescence unit of replacing easily and effectively,
Not only repair simple but also be easy to operation, the present invention can repair capsule can greatly reduce use cost, extend large area
The service life that OLED shows.Further, since the architectural characteristic of the present invention, the process management in OLED display unit element manufacturing
Difficulty is greatly reduced, and further increases the yield that large-area OLEDs show.
To sum up, compared with prior art, the present invention have drive simple, yield to improve, repair it is simple, be easy to operate, drop
Low use cost, and extend large-area OLEDs show service life the characteristics of.
Because the film layer of the EL materials of OLED display unit device is very thin, and easily it is subject to the erosion of extraneous water oxygen to break
It is bad, so after the completion of element manufacturing, needs make packaging protection layer outside OLED display unit device, complete whole device
Make.Specifically, the upper surface of connection electrode layer 17, first edge layer 14 and second edge layer 15 is coated with the envelope for encapsulation
Package material 18, encapsulating material 18 is inorganic encapsulated material or organic packaging materials.
As a modification of the present invention, if what is covered is inorganic encapsulated material, thickness can be adopted for 10-
The layer that the SiO2 or SiNx of 3000nm is formed, or the layer that SiO2 and SiNx build up；If what is covered is have
Machine encapsulating material, then can adopt thickness for 10-3000nm epoxy resin or acryl resin formed layer, or
The layer that the copolymer or mixture of epoxy resin and acryl resin is formed.
Another kind of as the present invention is improved, and first electrode 11 includes the first metal electrode and is deposited on the first metal electrode
On the first transparent conductive material, second electrode 12 include the second metal electrode and be deposited on the second metal electrode it is second saturating
The thickness of bright conductive material, the first metal electrode and the second metal electrode is 1-500nm, the first transparent conductive material and second
The thickness of transparent conductive material is 1-500nm；
In the present invention, first electrode 11 can be selected with the material of second electrode 12 according to the demand of actual displayed, for example,
When needing OLED display unit device to show upwards, the high metal electrode of the selection reflectivity of first electrode 11, such as silver electrode,
Then the first transparent conductive material is further deposited in silver electrode as the first metal electrode, and for second electrode 12, it is excellent
Choosing, reflectivity can be chosen and reach more than 90% metal electrode as the second metal electrode, the such as conventional gold of aluminium, molybdenum or copper
Category, wherein it is optimal with ag material, the second transparent conductive material, the second transparent conductive material are then further deposited in silver electrode
Can be transparent conductive oxide material, the conductive transparent material such as silver nano material or Graphene, wherein with transparent conductive metal
Oxide is optimal.The metal electrode of the present invention and the thickness of transparent conductive material are pH effect needs, it is preferred that the first metal
The thickness of electrode and the second metal electrode can be 50-100nm, the first transparent conductive material and the second transparent conductive material
Thickness can be 50-100nm.
Connection electrode layer 17 is transparent conductive material, it is preferred that connection electrode layer 17 is inorganic conductive oxide material structure
Into transparent micro-cavity structure.
Another kind of as the present invention is improved, and insulating barrier 13, first edge layer 14 and second edge layer 15 are inorganic blunt
Change layer or be organic passivation layer, wherein：Inorganic passivation layer can be the layer that SiO2 or SiNx are formed, or SiO2 and
The layer that SiNx builds up, organic passivation layer can be the layer formed using resin；
It is that first deposition covers first electrode in first electrode 11 and second electrode 12 in manufacture craft in the present invention
11 and the pixel of second electrode 12 define layer, then first electrode is being peeled off using the technique such as dry etching or direct exposure imaging
11 and the corresponding pixel in the top of second electrode 12 define layer, expose first electrode 11 and second electrode 12.So that pixel is defined
Layer is formed and is arranged on insulating barrier 13 between first electrode 11 and second electrode 12, and to be arranged on first electrode 11 and second electric
The edge of pole 12 and with insulating barrier 13 constitute trench structure first edge layer 14 and second edge layer 15.Insulating barrier 13, the first side
Edge layer 14 and second edge layer 15 can be inorganic passivation layer or can be organic passivation layer, and thickness can be 100-300nm,
Wherein, the layer that inorganic passivation layer can be formed for SiO2 or SiNx, or the layer that SiO2 and SiNx build up；Have
Machine passivation material can be colourless, coloured or black-colored photosensitive resin, the knot formed using modes such as rotary coating or printings
Structure film layer, goes to be adapted to different thin film-forming methods by concentration adjustment, such as, using having JEM-549 resins, ink dilution is consolidated
Prepared in inorganic flexible PVX using ink jet printing or other coating processes after content 10%, film thickness monitoring is in 500- after drying
3000nm degree, it is preferred that thickness is 1000-2000nm after drying.
On the other hand, the present invention provides a kind of display screen, as shown in figure 3, including driving backboard 2 and some above-mentioned pasters
Formula OLED display unit device, to drive and be provided with backboard anode 21 and backboard negative electrode 22, SMD OLED display unit on backboard 2
The first electrode 11 and second electrode 12 of device connects respectively backboard anode 21 and backboard negative electrode 22 by conducting resinl 23.
The driving backboard 2 of the present invention can be flexible back plate, curved surface backboard or flat back plate.The SMD OLED of the present invention
Display unit device is simple with the fit structure for driving backboard 2, and glow color can be by the output current size of driving backboard 2 certainly
By regulating and controlling.And, the SMD OLED display unit device adopted in the present invention is for above-mentioned SMD OLED display unit device
Part, therefore, compared with prior art, the present invention is same have drive simple, yield to improve, repair it is simple, be easy to operate, reduce
Use cost, and extend large-area OLEDs show service life the characteristics of.
When display screen is one side show, backboard anode 21 and backboard negative electrode 22 are correspondingly arranged at respectively the He of first electrode 11
The lower section of second electrode 12, as shown in Figure 3.
When display screen is double-sided display, as shown in figure 4, backboard anode 21 includes being disposed on the two ends of first electrode 11
Lower section and the first anode 211 that is connected with the two ends of first electrode 11 and second plate 212, it is electric that backboard negative electrode 22 is arranged on second
The lower section of pole 12.In the design, can be provided between the first anode 211 and second plate 212 and be grown with OLED luminescent materials 16
The equal or close interval of degree, and then make backboard anode 21 that light obstruction is not produced to OLED luminescent materials 16, show OLED
The light that unit component sends directly can send from front and back, so as to realize double-sided display.In addition, the present invention is to conduction
The coating scope of glue 23 is carefully limited and is driven the design of substrate, it is also possible to realize double-sided display.
Another further aspect, the present invention also provides a kind of preparation method of above-mentioned SMD OLED display unit device, such as Fig. 5
It is shown, including：
Step 1：The first electrode 11 and second electrode 12 being set up in parallel is formed on substrate, as shown in Figure 6；
Step 2：Deposition covers the first electrode 11 and the pixel of second electrode 12 defines layer on substrate, such as Fig. 7 institutes
Show；
Step 3：Peel off first electrode 11 and the corresponding pixel in the top of second electrode 12 defines layer, expose the He of first electrode 11
Second electrode 12, makes pixel define layer and forms the insulating barrier 13 that is arranged between first electrode 11 and second electrode 12 and be arranged on
The first edge layer 14 and second edge layer 15 at the edge of first electrode 11 and second electrode 12, insulating barrier 13 is and first edge
Layer 14 and second edge layer 15 form trench structure respectively with first electrode 11 and second electrode 12 as bottom, as shown in Figure 8；
Step 4：The upper table with first electrode 11 is formed in the trench structure that first edge layer 14 and insulating barrier 13 are constituted
The OLED luminescent materials 16 of face connection, as shown in Figure 9；
Step 5：The upper surface for defining layer and second electrode 12 in OLED luminescent materials 16, pixel is deposited for connecting OLED
The connection electrode layer 17 that the negative electrode of luminescent material 16 is connected with second electrode 12, as shown in Figure 10；
Step 6：The surface for defining layer in connection electrode layer 17 and pixel arranges encapsulating material 18, as shown in figure 11；
Step 7：Cutting forms some SMD OLED display unit devices being arranged on substrate, as shown in figure 12.
In preparation method of the present invention, the negative pole of OLED luminescent materials 16 is connected by connection electrode layer 17 with second electrode 12
Connect, so that first electrode 11 and second electrode 12 are located at the homonymy of OLED display unit device, so, single is being shown to OLED
When components and parts drive, it is only necessary to be provided with one with first electrode 11 and second electrode 12 in the bottom surface of OLED display unit device
The driving backboard 2 of connection, the type of drive of the present invention is simple, and is applicable not only to monochrome display part and is also applied for entirely
Color display device, it is to avoid positive and negative electrode is arranged in prior art caused by the both sides up and down of OLED luminescent materials and drives electricity
The extremely complex problem in road.
The present invention makes OLED display unit device after cutting as one using unique electrode arrangements method for designing
Independent unit is present, such design, can accomplish to be used after the quality screening to OLED display unit device, it is ensured that aobvious
Show quality, and different display purposes are realized by any combination of device, so as to effectively avoid traditional large area
OLED shows the yield issues in making, and can realize OLED display unit device and drive the design for disassembly of backboard 2,
Such that it is able to the bad luminescence unit of replacing easily and effectively, not only repair simple but also be easy to operation, the present invention's repairs
It is designed to greatly reduce use cost, extends the service life that large-area OLEDs show.Further, since the structure of the present invention
Characteristic, the process management difficulty in OLED display unit element manufacturing is greatly reduced, and further increases large-area OLEDs and shows
The yield for showing.
To sum up, compared with prior art, the present invention have drive simple, yield to improve, repair it is simple, be easy to operate, drop
Low use cost, and extend large-area OLEDs show service life the characteristics of.
Used as a modification of the present invention, step 1 is further：In the substrate constituted using alkali-free glass or flexible substrate
The wet method processing procedure of upper employing wet etching or mode of printing forms the first electrode 11 and second electrode 12 being set up in parallel, wherein,
Wet etching can be a step wet etching, or distribution wet etching；
Step 2 is further：
On substrate the inorganic passivation layer of first electrode 11 and second electrode 12 is covered as described using CVD process deposits
Pixel defines layer；
Or, having for first electrode 11 and second electrode 12 is covered using inkjet printing or coating process deposition on substrate
Machine passivation layer defines layer as the pixel.
As a further improvement on the present invention, in step 3, peel off first electrode 11 and the top of second electrode 12 is corresponding
Pixel defines layer, exposes first electrode 11 and second electrode 12 is further：
First electrode 11 and corresponding pixel circle in the top of second electrode 12 are peeled off using dry etching or direct exposure imaging
Given layer, exposes first electrode 11 and second electrode 12.
In the present invention, step 4 is further：
In the trench structure that first edge layer 14 and insulating barrier 13 are constituted, using evaporation mode or solution process mode shape
Into the OLED luminescent materials 16 being connected with the upper surface of first electrode 11.
In the present invention, the evaporation mode of OLED luminescent materials 16 adopts mask mode, due to being made using slicing mode
OLED luminescent materials 16, as needed, production method can be full-color evaporation mode or monochromatic evaporation mode, mask required precision
It is not high, can be very good to improve yield.White light parts can be a cellular construction, it is also possible to take cascaded structure.Solution system
Journey mode then can be being completed using ink jet printing, Nozzle printings or the mode such as mask spray printing.
In steps of 5, connection electrode layer 17 is the micro-cavity structure of the semitransparent cathode that inorganic conductive oxide material is constituted.
Inorganic conductive oxide material can be ITO, IZO, and it can also be monochromatic that processing procedure mode can be full-color RGB illumination modes
WOLED modes.
Another further aspect, the present invention also provides a kind of preparation method using above-mentioned SMD OLED display unit device and enters
The display screen preparation method that one step is realized, after the step 7, including：
Step 8：The first electrode 11 and second electrode 12 of SMD OLED display unit device are passed through respectively conducting resinl
23 are connected with the backboard anode 21 and backboard negative electrode 22 that drive backboard 2, as shown in Figure 3.
In the present invention, due to OLED display unit device using paster mode be arranged on driving backboard 2 on, monochrome show or
Full-color display can simple realization, wherein, full-color display can also realize monochromatic display using monochromatic power supply mode.Due to this
The OLED display unit device of invention has the characteristics of being conveniently replaceable, and compared with prior art, the present invention is in large-area OLEDs system
Do not limited by area in work, improved the powder injection molding for showing.
The present invention OLED display unit device size can be standard 0201,0402,0603,0805,1206 or
1210, after the completion of cutting on the substrate, it is possible to use chip mounter OLED display unit device note is attached on driving backboard 2,
Chip mounter is commercially available conventional type, and paster work is simple and reliable, and display mode can in any combination, when some luminescence units
Can accomplish that the area of the OLED display screen that replacing is processed, and the present invention makes is unrestricted when occurring asking in use, substrate is not received
Limit, show large area flexible and be achieved.
In the present invention, in substrate gold-tinted processing procedure or EL processing procedures, can the OLED display unit device that made be carried out propping up
Support thing is peeled off, i.e. strippable substrate, as shown in figure 13.Stripping process can OLED display unit device cutting before or cutting it is laggard
OK, the method for stripping can be peeled off using physics, it would however also be possible to employ the solution impregnation of short time is peeled off, and is finally given SMD
OLED display unit device.
The operation principle of the OLED display unit device of the present invention is the backboard anode 21 and backboard negative electrode for making driving backboard 2
22 applied voltages, then produce DC current in first electrode 11 and second electrode 12, and OLED luminescent materials 16 are because of the electricity for flowing through
Flow different and produce different luminosity, while the difference of OLED luminescent materials 16 can also send produces different luminous face
Color.
OLED luminescent materials have self luminous outstanding display quality, have active drive and passively show two kinds of application sides
Formula, but either which kind of display mode, and manufacture craft of the prior art is adopted on large substrates glass or plastic supporting base
OLED luminescence unit devices are formed with conventional semiconductor processing, due to distinctive environment in technology stability and OLED technique
Sensitiveness so that the yield and defect of display device cannot be avoided, have impact on making and cost that large scale shows product.Together
When, the distinctive life problems of OLED luminescent materials 16 even if can make that perfect display screen is obtained, but make through a period of time
With rear, the individual defects for occurring once in a while can only more renew screen because repairing, price and its costliness.
In order to overcome the making yield of large-area OLEDs display screen low, it is not easy to which what is be applied on large-area displays asks
Topic, the OLED display unit device that the present invention is completed by unique electrode structural designs, and be attached to using paster mode note
Drive on substrate and complete to show.Electrode cabling design in invention realizes first electrode 11 and is located at OLED with second electrode 12
The homonymy of display unit device, then OLED display unit device is realized by conducting resinl 23 or electrocondution slurry and the weldering of substrate is driven
Connect, not only simple and reliable process, and such mode of operation, effectively can must accomplish the quality to OLED display unit device
Screening, is combined to realize different display purposes, has avoided the yield issues during traditional large-area displays make, meanwhile,
Can be simply by melting welding, then the mode welded changes bad luminescence unit, operation is simply easy in reparation.Big face can be extended
The service life that product OLED shows.Especially suitable OLED advertisements and outdoor display application.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, on the premise of without departing from principle of the present invention, some improvements and modifications can also be made, these improvements and modifications
Should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of SMD OLED display unit device, it is characterised in that including the first electrode and second electrode that are set up in parallel,
The edge that insulating barrier, the first electrode and second electrode are provided between the first electrode and second electrode is respectively arranged with
With the first edge layer and second edge layer that the insulating barrier constitutes trench structure；
It is provided with the trench structure that the first edge layer is constituted with the insulating barrier and connects with the upper surface of the first electrode
The OLED luminescent materials for connecing, it is electric with described second that the upper surface of the OLED luminescent materials is provided with the surface of insulating layer
The connection electrode layer of pole connection.
2. SMD OLED display unit device according to claim 1, it is characterised in that the connection electrode layer,
The upper surface of one marginal layer and second edge layer is provided with the encapsulating material for encapsulation, and the encapsulating material is inorganic encapsulated material
Material or organic packaging materials.
3. SMD OLED display unit device according to claim 2, it is characterised in that the inorganic encapsulated material is
The layer that thickness is formed for the SiO2 or SiNx of 10-3000nm, or the layer that SiO2 and SiNx build up；
The organic packaging materials are the layers that the epoxy resin or acryl resin that thickness is 10-3000nm is formed, or
The layer that the copolymer or mixture of person's epoxy resin and acryl resin is formed.
4. SMD OLED display unit device according to claim 1, it is characterised in that the first electrode includes the
One silver electrode and the first transparent conductive material being deposited in first silver electrode, the second electrode includes the second silver electrode
It is equal with the thickness of the second transparent conductive material being deposited in second silver electrode, first silver electrode and the second silver electrode
Thickness for 1-500nm, first transparent conductive material and the second transparent conductive material is 1-500nm；
The connection electrode layer is transparent conductive material.
5. SMD OLED display unit device according to claim 1, it is characterised in that the insulating barrier, the first side
Edge layer and second edge layer are inorganic passivation layer or are organic passivation layer, wherein：The inorganic passivation layer be SiO2 or
The layer that SiNx is formed, or the layer that SiO2 and SiNx build up；
The organic passivation layer is the layer formed using resin.
6. a kind of display screen, it is characterised in that arbitrary described SMD in backboard and some claims 1-5 including driving
OLED display unit device, is provided with backboard anode and backboard negative electrode on the driving backboard, the SMD OLED shows single
The first electrode and second electrode of components and parts connects respectively the backboard anode and backboard negative electrode by conducting resinl.
7. display screen according to claim 6, it is characterised in that the backboard anode and backboard negative electrode are correspondingly arranged respectively
In the first electrode and the lower section of second electrode；
Or, the backboard anode include being disposed on first electrode two ends lower section and with the first electrode two ends
The first anode and second plate of connection, the backboard negative electrode is arranged on the lower section of the second electrode.
8. in a kind of claim 1-5 arbitrary described SMD OLED display unit device preparation method, it is characterised in that
Including：
Step 1：The first electrode and second electrode being set up in parallel is formed on substrate；
Step 2：Deposition covers the first electrode and the pixel of second electrode defines layer on substrate；
Step 3：Peel off first electrode and the corresponding pixel in second electrode top define layer, expose first electrode and second electrode,
Make pixel define layer formation to be arranged on the insulating barrier between the first electrode and second electrode and be arranged on the first electrode
With the first edge layer and second edge layer at the edge of second electrode, the insulating barrier with first edge layer and second edge layer
Form trench structure respectively with the first electrode and second electrode as bottom；
Step 4：Form upper with the first electrode in the trench structure that the first edge layer is constituted with the insulating barrier
The OLED luminescent materials of surface connection；
Step 5：The upper surface for defining layer and second electrode in the OLED luminescent materials, pixel is deposited for connecting the OLED
The connection electrode layer that the negative electrode of luminescent material is connected with second electrode；
Step 6：The surface for defining layer in the connection electrode layer and pixel arranges encapsulating material；
Step 7：Cutting forms some settings SMD OLED display unit device on the substrate.
9. preparation method according to claim 8, it is characterised in that the step 1 is further：Using alkali-free glass
Or the first electrode being set up in parallel using the wet method processing procedure formation of wet etching or mode of printing on the substrate of flexible substrate composition
And second electrode；
The step 2 is further：
On substrate the inorganic passivation layer of the first electrode and second electrode is covered as the pixel using CVD process deposits
Define layer；
Or, the organic blunt of the first electrode and second electrode is covered using inkjet printing or coating process deposition on substrate
Change layer and define layer as the pixel；
In the step 3, the stripping first electrode and the corresponding pixel in second electrode top define layer, expose first electrode
It is further with second electrode：
First electrode is peeled off using dry etching or direct exposure imaging and the corresponding pixel in second electrode top defines layer, exposed
First electrode and second electrode.
The step 4 is further：
In the trench structure that the first edge layer is constituted with the insulating barrier, using evaporation mode or solution process mode shape
Into the OLED luminescent materials being connected with the upper surface of the first electrode.
10. what a kind of preparation method of the SMD OLED display unit device described in employing claim 8 was further realized is aobvious
Display screen preparation method, it is characterised in that after the step 7, including：
Step 8：By the first electrode and second electrode of the SMD OLED display unit device respectively by conducting resinl and institute
State the backboard anode and backboard negative electrode connection for driving backboard.
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| CN106653807B (en) | 2020-02-07 |
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