CN103208508A - Organic electroluminescent display screen, coating device special for organic electroluminescent display screen and manufacturing method for organic electroluminescent display screen - Google Patents
Organic electroluminescent display screen, coating device special for organic electroluminescent display screen and manufacturing method for organic electroluminescent display screen Download PDFInfo
- Publication number
- CN103208508A CN103208508A CN2013101508331A CN201310150833A CN103208508A CN 103208508 A CN103208508 A CN 103208508A CN 2013101508331 A CN2013101508331 A CN 2013101508331A CN 201310150833 A CN201310150833 A CN 201310150833A CN 103208508 A CN103208508 A CN 103208508A
- Authority
- CN
- China
- Prior art keywords
- slurry
- coating
- organic
- layer
- display panel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Electroluminescent Light Sources (AREA)
Abstract
The invention discloses an organic electroluminescent display screen, a coating device special for the organic electroluminescent display screen and a manufacturing method for the organic electroluminescent display screen. The organic electroluminescent display screen is manufactured by the following steps of: forming isolation barriers which are distributed in columns on an indium tin oxide (ITO) glass substrate, sequentially coating required organic slurry of a hole injection organic light emitting material, a hole transport organic light emitting material, an organic light emitting material in red, green and blue (RGB) base colors, electron transport, electron injection and the like in a linear coating way along each slurry coating groove, evaporating strip-type metal electrodes, and performing a packaging process. An ultra-thin large-area display screen can be manufactured, pixel quality is uniform, defective pixels are remarkably reduced, the production efficiency of the organic electroluminescent display screen is improved, the yield of the product is increased, materials and energy sources are saved, production cost is effectively lowered, and large-area display is facilitated.
Description
Technical field
The present invention relates to a kind of display screen and preparation method thereof, also relate in particular to a kind of preparation facilities, be applied to the manufacturing field of organic EL display panel.
Background technology
Organic EL display panel (Organic Light Emitting Device, OLED) because have that ultralight is thin, high brightness, response are fast, low-power consumption, efficient is high and make characteristics such as simple, be widely used in fields such as panel display screen, module backlight and illumination, its principle of luminosity is the extremely thin organic material of deposition between two electrodes, this luminous organic material is passed to direct current make it luminous.The practical characteristics one of organic EL display panel are that brightness is higher, are generally 100 ~ 500 cd/m
2Between, maximum brightness can reach 2,000 ~ 3,000 cd/m
2The 2nd, long-time steady illumination generally keeps continuous operations several even tens hours.Because the brightness of organic EL display panel spare and current density are approximated to proportional relation, if want to realize more high brightness, need higher current drives, so big electric current will produce a large amount of heat; Also produce a large amount of heat in the process that works long hours.These 2 all can cause the display panel plate temperature to rise, because the display screen heat radiation is inhomogeneous, make that display screen regional area caloric value is excessive, and the panel working life is lower or directly burn out and can not work.This situation has obviously reduced the practicability feasibility of display screen panel, therefore requires organic EL display panel must have good heat sinking function.
In the middle of the whole making flow process of organic EL display panel, especially ito glass substrate is made flow process and organic material evaporation flow process, inevitably has the influence of contaminant particles.And be applied to the organic electroluminescence device of organic EL display panel, and the organic material very thin thickness between two electrode, its gross thickness is below micron dimension.Therefore, tiny contaminant particles causes that very likely certain light-emitting zone is short-circuited in the display screen, and during display screen work, this zone electric current will sharply rise and discharge a large amount of heat, and then near the heat radiation of the light-emitting zone of influence, infringement monoblock panel.These contaminant particles have reduced the production yield of organic EL display panel, have increased its manufacturing cost.
The general manufacture method of organic EL display panel is at present: after the ito glass substrate cleaning, adopt the method for evaporation or spin coating to make organic function layer, last evaporation metal negative electrode.Adopt this method, on the one hand, be easy to cause the waste of material, especially for expensive luminous organic material, be unfavorable for reducing production costs.On the other hand, this method is unfavorable for realizing large tracts of land production.Two problems of above-mentioned existence have seriously restricted the product of organic EL display panel and have used, especially to large-area organic EL display panel, and production cost height not only, and also it is on the low side to produce yield.
Summary of the invention
In order to solve the prior art problem, the objective of the invention is to overcome the deficiency that prior art exists, a kind of organic EL display panel, its special-purpose apparatus for coating and preparation method thereof are provided, can realize the manufacturing of ultra-thin large tracts of land display screen, pixel quality homogeneous, bad point obviously reduces, and has improved production efficiency and the product yield of organic EL display panel, economical with materials and the energy effectively reduce production cost.
For achieving the above object, the present invention adopts following technical proposals:
A kind of organic EL display panel, its structure comprises ito glass substrate successively, functional layer, evaporation is metallic cathode and cap on functional layer, functional layer is between ito glass substrate and metallic cathode, functional layer comprises hole injection layer successively, hole transmission layer, the luminous organic material layer, electron transfer layer and electron injecting layer, it is hole injection layer on ito glass substrate, it is metallic cathode on electron injecting layer, topmost be cap at metallic cathode, the luminous organic material layer is by R, G, the luminous organic material of B three primary colors forms, become column distribution that a series of isolation barriers are set at ito glass substrate, form the slurry coating pan by the gap between the adjacent isolation barrier, make the slurry coating pan also become column distribution, functional layer is formed by the pulp preparation that is coated in the slurry coating pan, in per three adjacent slurry coating pans, scribble R respectively, G, B three primary colors luminous organic material, this pixel groups of primordial, each base pixel group forms a three-color light-emitting unit, form R along slurry coating pan vertical line formula coating organic ink, G, B three-color light-emitting point, be that the three-color light-emitting unit is cross direction profiles, the resolution of the quantity of slurry coating pan and the organic EL display panel of manufacturing adapts, and the number of every plasma discharge material coating pan is 3 times of the horizontal pixel number purposes of the organic EL display panel of manufacturing on ito glass substrate.
Technical scheme as the present invention's optimization, isolate the section configuration of barrier for trapezoidal, the section configuration of slurry coating pan is trapezoidal, the opening size that is the slurry coating pan is little with respect to the bottom land size of slurry coating pan, the container unit of luminous organic material is taken in formation, isolate the transverse width of barrier and the organic EL display panel size of horizontal spacing and manufacturing and adapt, isolate barrier and be all equidistant distribution.
As the technical scheme that the present invention optimizes, the material of isolating barrier is photoresist.
Special-purpose apparatus for coating as organic EL display panel of the present invention, comprise dispense tip, the slurry bucket, spraying nozzle and pressure injector, a series of spraying nozzles are distributed on the coating working face of dispense tip, the inner chamber of dispense tip is connected with the slurry barrel cavity, air pressure in the pressure injector control slurry barrel cavity, thereby extraction and the extrusion of control slurry, in the inner chamber of dispense tip, also be provided with slurry dispenser, at different slurry bucket correspondences different types of slurry of packing into, slurry dispenser control successively is connected dispense tip with required corresponding slurry bucket successively, make the slurry in the inner chamber that arrives dispense tip be applied to target location by spraying nozzle, dispense tip formula along the line is carried out coating sizing-agent, spraying nozzle on the coating working face of dispense tip in a row distributes, and different spraying nozzle correspondences is sprayed the corresponding slurry of injection in the slurry coating pan that becomes column distribution at ito glass substrate.
Technical scheme as apparatus for coating optimization of the present invention, each slurry bucket correspondence respectively is equipped with hole injection layer functional material slurry, hole transmission layer functional material slurry, red luminous organic material slurry, green luminous organic material slurry, the blue organic luminous material slurry, electron transfer layer functional material slurry and electron injecting layer functional material slurry, wherein load red luminous organic material slurry, three slurry buckets of green luminous organic material slurry and blue organic luminous material slurry are realized R, G, the supply of B three primary colors luminous organic material, on the dispense tip adapt with the resolution of the organic EL display panel of the quantity of spraying nozzle and manufacturing, the number of spraying nozzle is 3 times of the horizontal pixel number purposes of the organic EL display panel of manufacturing, slurry dispenser will arrive the R in the inner chamber of dispense tip, G, the slurry of B three primary colors luminous organic material is delivered to different spraying nozzles respectively, driver guiding dispense tip, along the slurry coating pan on ito glass substrate, the vertical line formula is at the slurry of hole transmission layer coating different colours, every 3 adjacent spraying nozzles form one group of slurry coater unit, a R of the organic EL display panel of one group of spraying nozzle unit corresponding spraying preparation manufacturing, G, the luminous organic material layer of B three-color light-emitting point, make a series of R, G, the base pixel group that the B three primary colors constitute, thus preparation forms a series of R, G, B three-color light-emitting point.
Preferably regulate air pressure size in the slurry barrel cavity by above-mentioned pressure injector, and then the application rate of control slurry, thereby the coating thickness of control slurry.
Above-mentioned pressure injector preferably adopts needle cylinder device.
Preparation method as organic EL display panel of the present invention is characterized in that, comprises the steps:
A. select the big or small ito glass substrate that meets the requirements, clean; On clean ito glass substrate, preferably utilize the inorganic material film of the mask plate deposition effective thickness of regular pattern;
B. be prepared into the isolation barrier of column distribution at ito glass substrate, be formed into the slurry coating pan of column distribution; Preferably utilize etching technics to realize isolating the barrier moulding;
The dispense tip of apparatus for coating successively is connected with the slurry bucket that hole injection layer functional material slurry and hole transmission layer functional material slurry are housed successively, each slurry coating pan on the ito glass substrate, adopt the mode of line formula coating, successively successively to coating pan in the corresponding slurry of coating, thereby successively prepare hole function of injecting layer and hole transport functional layer in all coating pans on ito glass substrate successively; According to the thickness that hole injection layer and hole transmission layer are arranged of technological design organic EL display panel, preferably by the control apparatus for coating, and then control application rate and coating thickness;
D. make the dispense tip while and red luminous organic material slurry of apparatus for coating, three slurry buckets of green luminous organic material slurry and blue organic luminous material slurry are connected, each slurry coating pan on the ito glass substrate, adopt the mode of line formula coating, corresponding to all R, G, corresponding slurry is sprayed in the base pixel group position that the B three primary colors constitute, in per three adjacent slurry coating pans, spray R respectively, G, B three primary colors luminous organic material, this pixel groups of primordial, each base pixel group forms a three-color light-emitting unit, form R along slurry coating pan vertical line formula coating organic ink, G, B three-color light-emitting point, namely the hole transport functional layer in all slurry coating pans forms organic luminous material layer; According to the phase thickness of the luminous organic material layer of technological design organic EL display panel, preferably by the control apparatus for coating, and then control application rate and coating thickness;
The dispense tip of apparatus for coating successively is connected with the slurry bucket that electric transmission functional material slurry and electron injecting layer functional material slurry are housed successively, each slurry coating pan on the ito glass substrate, adopt the mode of line formula coating, successively in coating pan, be coated with corresponding slurry successively, thereby successively prepare electron transfer layer and electron injecting layer more successively on the luminous organic material layer in all coating pans on ito glass substrate; According to the electron transfer layer of technological design organic EL display panel and the thickness of electron injecting layer, preferably by the control apparatus for coating, and then control application rate and coating thickness;
F. evaporation metal negative electrode on the electron injecting layer in all slurry coating pans;
G. form the organic EL display panel that the three-color light-emitting unit by cross direction profiles constitutes through packaging technology.
The present invention has following apparent outstanding substantive distinguishing features and remarkable advantage compared with prior art:
1. the present invention adopts the mode of line formula coating, and the functional material of all pixel groups is coated with simultaneously, the homogeneity of each functional layer manufacture craft of all pixels on the screen of assurance, and then guaranteed to finish after the preparation uniformity that full screen shows;
2. the mode of line formula coating is conducive to realize the making of large tracts of land display screen, and the assurance of front homogeneity has been arranged, and by the length of increase slurry coating pan and the spacing of barrier, can realize the large scale making;
3. by adjusting the number of isolating barrier, can realize the requirement of different resolution easily;
4. the luminescence unit cross direction profiles of three primary colors is compared the structure of vertical stack, is conducive to realize that flatscreen makes, and can effectively reduce driving voltage, also helps heat radiation, and can not influence each other between luminescence unit of all kinds;
5. adopt the mode of coating, throughput rate is fast;
6. the hole reserved of spraying nozzle is very little, accurately controls application rate, once realizes the full frame coating of functional material of the same race, can cause the waste of material hardly.
Description of drawings
Fig. 1 is the overall structure schematic diagram of the embodiment of the invention one organic EL display panel.
Fig. 2 isolates barrier ito glass substrate structural representation for having of the embodiment of the invention one.
Fig. 3 is the embodiment of the invention one special-purpose apparatus for coating structural representation.
Embodiment
Details are as follows for the preferred embodiments of the present invention:
Embodiment one:
In the present embodiment, referring to Fig. 1 and Fig. 2, a kind of organic EL display panel, its structure comprises ito glass substrate 1 successively, functional layer, evaporation is metallic cathode 4 and cap 5 on functional layer, functional layer is between ito glass substrate 1 and metallic cathode 4, functional layer comprises hole injection layer successively, hole transmission layer, the luminous organic material layer, electron transfer layer and electron injecting layer, it is hole injection layer on ito glass substrate 1, it is metallic cathode 4 on electron injecting layer, be cap 5 topmost at metallic cathode 4, the luminous organic material layer is by R, G, the luminous organic material of B three primary colors forms, at 1 one-tenth column distribution of ito glass substrate a series of isolation barriers 2 are set, form slurry coating pan 3 by the gap between the adjacent isolation barrier 2, make slurry coating pan 3 also become column distribution, functional layer is formed by the pulp preparation that is coated in the slurry coating pan 3, in per three adjacent slurry coating pans 3, scribble R respectively, G, B three primary colors luminous organic material, this pixel groups of primordial, each base pixel group forms a three-color light-emitting unit, form R along slurry coating pan 3 vertical line formulas coating organic ink, G, B three-color light-emitting point, be that the three-color light-emitting unit is cross direction profiles, the resolution of the quantity of slurry coating pan 3 and the organic EL display panel of manufacturing adapts, and the number of every plasma discharge material coating pan 3 is 3 times of the horizontal pixel number purposes of the organic EL display panel of manufacturing on ito glass substrate 1.In the present embodiment, the number of isolating barrier 2 is relevant with the resolution that organic EL display panel needs, and resolution is more high, and isolation barrier 2 is more many, and then pixel is more many.
In the present embodiment, referring to Fig. 1 and Fig. 2, the section configuration of isolating barrier 2 is trapezoidal, the section configuration of slurry coating pan 3 is trapezoidal, the opening size that is slurry coating pan 3 is little with respect to the bottom land size of slurry coating pan 3, the container unit of luminous organic material is taken in formation, isolates the longitudinal length of barrier 2 and the organic EL display panel size of horizontal spacing and manufacturing and adapts, and isolates barrier 2 and is all equidistant distribution.In the present embodiment, the length of isolation barrier 2 and spacing can be according to the needs adjustment of producing, to satisfy the needs of different screen size.Isolating barrier 2 all is equidistantly to distribute, and screen is more big, and it is more big then to isolate barrier 2 spacings, and it is also more long to isolate barrier 2.
In the present embodiment, referring to Fig. 3, a kind of special-purpose apparatus for coating for preparing the organic EL display panel of this example, comprise dispense tip 6, slurry bucket 7, spraying nozzle 8 and pressure injector, a series of spraying nozzles 8 are distributed on the coating working face of dispense tip 6, the inner chamber of dispense tip 6 and slurry bucket 7 intracavity inter-connections, air pressure in pressure injector control slurry bucket 7 inner chambers, thereby extraction and the extrusion of control slurry, in the inner chamber of dispense tip 6, also be provided with slurry dispenser, at different slurry bucket 7 correspondences different types of slurry of packing into, slurry dispenser control successively is connected dispense tip 6 with required corresponding slurry bucket 7 successively, make the slurry in the inner chamber that arrives dispense tip 6 be applied to target location by spraying nozzle 8, dispense tip 6 formulas along the line are carried out the slurry coating, spraying nozzle 8 on the coating working face of dispense tip 6 in a row distributes, and different spraying nozzle 8 correspondences are injected corresponding slurry to spraying in the slurry coating pan 3 of 1 one-tenth column distribution of ito glass substrate.In the present embodiment, the hole that spraying nozzle 8 is reserved is very little, accurately controls application rate, once realizes the full frame coating of functional material of the same race, can cause the waste of material hardly.
In the present embodiment, referring to Fig. 3 and Fig. 2, each slurry bucket 7 correspondence respectively is equipped with hole injection layer functional material slurry, hole transmission layer functional material slurry, red luminous organic material slurry, green luminous organic material slurry, the blue organic luminous material slurry, electron transfer layer functional material slurry and electron injecting layer functional material slurry, above-mentioned slurry is that required organic functional material and luminescent material are used organic solvent dissolution respectively, be made into by finite concentration, wherein load red luminous organic material slurry, three slurry buckets 7 of green luminous organic material slurry and blue organic luminous material slurry are realized R, G, the supply of B three primary colors luminous organic material, on the dispense tip 6 adapt with the resolution of the organic EL display panel of the quantity of spraying nozzle 8 and manufacturing, the number of spraying nozzle 8 is 3 times of the horizontal pixel number purposes of the organic EL display panel of manufacturing, slurry dispenser will arrive the R in the inner chamber of dispense tip 6, G, the slurry of B three primary colors luminous organic material is delivered to different spraying nozzle 8 respectively, driver guiding dispense tip 6, along the slurry coating pan 3 on ito glass substrate 1, the vertical line formula is at the slurry of hole transmission layer coating different colours, every 3 adjacent spraying nozzles 8 form one group of slurry coater unit, a R of the organic EL display panel of the one group of corresponding spraying preparation of slurry coater unit manufacturing, G, the luminous organic material layer of B three-color light-emitting point, make a series of R, G, the base pixel group that the B three primary colors constitute, thus preparation forms a series of R, G, B three-color light-emitting point.
In the present embodiment, on the above-mentioned dispense tip 6 relevant with the resolution of display screen with the number of spraying nozzle 8,3 spraying nozzles are arranged on every group of dispense tip, the number of total spraying nozzle is three times of the horizontal number of pixels of screen.When the coating luminous material layer, dispense tip 6 links to each other with the slurry bucket 7 that R, G, three kinds of organic inks of B are housed respectively, give all pixel groups coating R, G, three kinds of organic inks of B respectively, when being coated with other organic function layers, then all be used for being coated with corresponding organic ink.
In the present embodiment, a kind of preparation method of organic EL display panel of present embodiment comprises the steps:
A. select the big or small ito glass substrate 1 that meets the requirements, clean;
B. be prepared into the isolation barrier 2 of column distribution at ito glass substrate 1, be formed into the slurry coating pan 3 of column distribution;
The dispense tip 6 of apparatus for coating successively is connected with the slurry bucket 7 that hole injection layer functional material slurry and hole transmission layer functional material slurry are housed successively, each slurry coating pan 3 on the ito glass substrate 1, adopt the mode of line formula coating, successively successively to slurry coating pan 3 in the corresponding slurry of coating, thereby priority prepares hole function of injecting layer and hole transport functional layer successively all the slurry coating pans 3 on ito glass substrate 1 in; According to the hole function of injecting layer of technological design organic EL display panel and the thickness of hole transport functional layer, by the control apparatus for coating, and then control application rate and coating thickness;
D. make 6 whiles and red luminous organic material slurry of dispense tip of apparatus for coating, three slurry buckets 7 of green luminous organic material slurry and blue organic luminous material slurry are connected, each slurry coating pan 3 on the ito glass substrate 1, adopt the mode of line formula coating, corresponding to all R, G, corresponding slurry is sprayed in the base pixel group position that the B three primary colors constitute, in per three adjacent slurry coating pans 3, spray R respectively, G, B three primary colors luminous organic material, this pixel groups of primordial, each base pixel group forms a three-color light-emitting unit, form R along slurry coating pan 3 vertical line formulas coating organic ink, G, B three-color light-emitting point, namely the hole transport functional layer in all slurry coating pans 3 forms organic luminous material layer; According to the thickness of the luminous organic material layer of technological design organic EL display panel, by the control apparatus for coating, and then control application rate and coating thickness;
The dispense tip 6 of apparatus for coating successively is connected with the slurry bucket 7 that electric transmission functional material slurry and electron injecting layer functional material slurry are housed successively, each slurry coating pan 3 on the ito glass substrate 1, adopt the mode of line formula coating, successively in slurry coating pan 3, be coated with corresponding slurry successively, thereby successively prepare electron transfer layer and electron injecting layer more successively on the luminous organic material layer in all coating pans 3 on ito glass substrate 1; According to the electron transfer layer of technological design organic EL display panel and the thickness of electron injecting layer, by the control apparatus for coating, and then control application rate and coating thickness;
F. evaporation metal negative electrode 4 on the electron injecting layer in all slurry coating pans 3;
G. form the organic EL display panel that the three-color light-emitting unit by cross direction profiles constitutes through packaging technology.
9. the preparation method of organic EL display panel according to Claim 8, it is characterized in that: in above-mentioned steps c, steps d and step e, thickness according to the equivalent layer of each functional layer of technological design organic EL display panel, by the control apparatus for coating, and then control application rate and coating thickness.
In the present embodiment, be formed into the isolation barrier 2 of column distribution on the ito glass substrate 1, then along each slurry coating pan 3, adopt the mode of line formula coating, the corresponding organic ink of the luminous organic material layer of required hole injection layer, hole transmission layer, R, G, B three primary colors, electron transfer layer, electron injecting layer on being coated with successively, evaporation bullion electrode 4 is finally by crossing the organic EL display panel that packaging technology forms present embodiment.Use the present embodiment method to prepare organic EL display panel, the production efficiency height, waste of material is few, the screen display homogeneity is good, effectively reduce production costs, improve the product yield, and the line formula be coated be beneficial to realize large tracts of land show and reduce screen thickness, reduce that the requirement of driving voltage screen size and resolution can be easy pass through to adjust spacing and the number realization of isolating barrier.
Embodiment two:
Present embodiment and embodiment one are basic identical, and special feature is:
In the present embodiment, the material of isolating barrier 2 is photoresist, and photoresist forms insoluble material after illumination, forms to isolate barrier 2.
Embodiment three:
Present embodiment and previous embodiment are basic identical, and special feature is:
In the present embodiment, by the air pressure size in pressure injector adjusting slurry bucket 7 inner chambers, and then the application rate of control slurry, thereby the coating thickness of control slurry is easy to accurate control, the preparation efficiency height.
Embodiment four:
Present embodiment and previous embodiment are basic identical, and special feature is:
In the present embodiment, pressure injector is needle cylinder device, and is simple in structure, is easy to control.
Embodiment five:
Present embodiment and previous embodiment are basic identical, and special feature is:
In the present embodiment, a kind of preparation method of organic EL display panel comprises the steps:
A. identical with embodiment one;
B. utilize etching technics realize to isolate barrier 2 moulding, be prepared into the isolation barrier 2 of column distribution at ito glass substrate 1, be formed into the slurry coating pan 3 of column distribution;
C. identical with embodiment one;
D. identical with embodiment one;
E. identical with embodiment one;
F. identical with embodiment one;
G. identical with embodiment one.
In the present embodiment, utilize etching technics to realize isolating barrier 2 moulding, be convenient to isolating little processing and manufacturing of barrier 2.
Embodiment six:
Present embodiment and previous embodiment are basic identical, and special feature is:
In the present embodiment, a kind of preparation method of organic EL display panel of present embodiment comprises the steps:
A. select the big or small ito glass substrate 1 that meets the requirements, clean, on clean ito glass substrate, utilize the inorganic material film of the mask plate deposition effective thickness of regular pattern;
B. identical with embodiment one;
C. identical with embodiment one;
D. identical with embodiment one;
E. identical with embodiment one;
F. identical with embodiment one;
G. identical with embodiment one.
In the present embodiment, on clean ito glass substrate 1, utilize the inorganic material film of the mask plate deposition effective thickness of regular pattern, make figure exposure image on photoresists of printing opacity, be convenient to isolate barrier 2 in preparation in photo-mask process.
By reference to the accompanying drawings the embodiment of the invention is illustrated above; but the invention is not restricted to above-described embodiment; can also make multiple variation according to the purpose of innovation and creation of the present invention; all according to technical solution of the present invention spiritual essence and principle under make change, modification, substitute, combination, simplify; all should be the substitute mode of equivalence; as long as goal of the invention according to the invention; only otherwise deviate from know-why and the inventive concept of organic EL display panel of the present invention, its special-purpose apparatus for coating and preparation method thereof, all belong to protection scope of the present invention.
Claims (11)
1. organic EL display panel, its structure comprises ito glass substrate (1) successively, functional layer, evaporation is metallic cathode (4) and cap (5) on functional layer, described functional layer is positioned between described ito glass substrate (1) and the described metallic cathode (4), described functional layer comprises hole injection layer successively, hole transmission layer, the luminous organic material layer, electron transfer layer and electron injecting layer, on described ito glass substrate (1), it is hole injection layer, it is metallic cathode (4) on electron injecting layer, be described cap (5) topmost at described metallic cathode (4), the luminous organic material layer is by R, G, the luminous organic material of B three primary colors forms, it is characterized in that: become column distribution that a series of isolation barriers (2) are set at described ito glass substrate (1), form slurry coating pan (3) by the gap between the adjacent described isolation barrier (2), make described slurry coating pan (3) also become column distribution, described functional layer is formed by the pulp preparation that is coated in the described slurry coating pan (3), in per three adjacent described slurry coating pans (3), scribble R respectively, G, B three primary colors luminous organic material, this pixel groups of primordial, each base pixel group forms a three-color light-emitting unit, form R along described slurry coating pan (3) vertical line formula coating organic ink, G, B three-color light-emitting point, be that the three-color light-emitting unit is cross direction profiles, the resolution of the quantity of described slurry coating pan (3) and the organic EL display panel of manufacturing adapts, and the number of going up the described slurry coating pan of every row (3) at described ito glass substrate (1) is 3 times of the horizontal pixel number purposes of the organic EL display panel of manufacturing.
2. organic EL display panel according to claim 1, it is characterized in that: the section configuration of described isolation barrier (2) is for trapezoidal, the section configuration of described slurry coating pan (3) is trapezoidal, the opening size that is described slurry coating pan (3) is little with respect to the bottom land size of described slurry coating pan (3), the container unit of luminous organic material is taken in formation, the longitudinal length of described isolation barrier (2) and the organic EL display panel size of horizontal spacing and manufacturing adapt, and described isolation barrier (2) is all equidistant distribution.
3. organic EL display panel according to claim 1 and 2, it is characterized in that: the material of described isolation barrier (2) is photoresist.
4. special-purpose apparatus for coating for preparing the described organic EL display panel of claim 1, comprise dispense tip (6), slurry bucket (7), spraying nozzle (8) and pressure injector, a series of described spraying nozzles (8) are distributed on the coating working face of described dispense tip (6), the inner chamber of described dispense tip (6) and described slurry bucket (7) intracavity inter-connection, described pressure injector is controlled the air pressure in described slurry bucket (7) inner chamber, thereby extraction and the extrusion of control slurry, it is characterized in that: in the inner chamber of described dispense tip (6), also be provided with slurry dispenser, at different described slurry bucket (7) correspondences different types of slurry of packing into, the control of described slurry dispenser successively is connected described dispense tip (6) with required corresponding slurry bucket (7) successively, make the slurry in the inner chamber that arrives described dispense tip (6) be applied to target location by described spraying nozzle (8), described dispense tip (6) formula along the line is carried out coating sizing-agent, described spraying nozzle (8) on the coating working face of described dispense tip (6) in a row distributes, and different described spraying nozzles (8) is corresponding to spray the corresponding slurry of injection in the slurry coating pan (3) that becomes column distribution at described ito glass substrate (1).
5. apparatus for coating according to claim 4, it is characterized in that: each described slurry bucket (7) correspondence respectively is equipped with hole injection layer functional material slurry, hole transmission layer functional material slurry, red luminous organic material slurry, green luminous organic material slurry, the blue organic luminous material slurry, electron transfer layer functional material slurry and electron injecting layer functional material slurry, wherein load red luminous organic material slurry, three described slurry buckets (7) of green luminous organic material slurry and blue organic luminous material slurry are realized R, G, the supply of B three primary colors luminous organic material, on the described dispense tip (6) adapt with the resolution of the organic EL display panel of the quantity of spraying nozzle (8) and manufacturing, the number of described spraying nozzle (8) is 3 times of the horizontal pixel number purposes of the organic EL display panel of manufacturing, described slurry dispenser will arrive the R in the inner chamber of described dispense tip (6), G, the slurry of B three primary colors luminous organic material is delivered to different described spraying nozzles (8) respectively, driver guides described dispense tip (6), along the described slurry coating pan (3) on ito glass substrate (1), the vertical line formula is at the slurry of hole transmission layer coating different colours, every adjacent 3 described spraying nozzles (8) form one group of slurry coater unit, a R of the organic EL display panel of one group of spraying nozzle unit corresponding spraying preparation manufacturing, G, the luminous organic material layer of B three-color light-emitting point, make a series of R, G, the base pixel group that the B three primary colors constitute, thus preparation forms a series of R, G, B three-color light-emitting point.
6. according to claim 4 or 5 described apparatus for coating, it is characterized in that: regulate air pressure size in described slurry bucket (7) inner chamber by described pressure injector, and then the application rate of control slurry, thereby the coating thickness of control slurry.
7. apparatus for coating according to claim 6, it is characterized in that: described pressure injector is needle cylinder device.
8. the preparation method of the described organic EL display panel of claim 1 is characterized in that, comprises the steps:
A. select the big or small ito glass substrate that meets the requirements, clean;
B. be prepared into the isolation barrier of column distribution at ito glass substrate, be formed into the slurry coating pan of column distribution;
The dispense tip of apparatus for coating successively is connected with the slurry bucket that hole injection layer functional material slurry and hole transmission layer functional material slurry are housed successively, each described slurry coating pan on the ito glass substrate, adopt the mode of line formula coating, successively successively to coating pan in the corresponding slurry of coating, thereby successively prepare hole function of injecting layer and hole transport functional layer in all coating pans on ito glass substrate successively;
D. make the dispense tip while and red luminous organic material slurry of apparatus for coating, three described slurry buckets of green luminous organic material slurry and blue organic luminous material slurry are connected, each described slurry coating pan on the ito glass substrate, adopt the mode of line formula coating, corresponding to all R, G, corresponding slurry is sprayed in the base pixel group position that the B three primary colors constitute, in per three adjacent described slurry coating pans, spray R respectively, G, B three primary colors luminous organic material, this pixel groups of primordial, each base pixel group forms a three-color light-emitting unit, form R along described slurry coating pan vertical line formula coating organic ink, G, B three-color light-emitting point, namely the hole transport functional layer in all slurry coating pans forms organic luminous material layer;
The dispense tip of apparatus for coating successively is connected with the slurry bucket that electric transmission functional material slurry and electron injecting layer functional material slurry are housed successively, each described slurry coating pan on the ito glass substrate, adopt the mode of line formula coating, successively in coating pan, be coated with corresponding slurry successively, thereby successively prepare electron transfer layer and electron injecting layer more successively on the luminous organic material layer in all coating pans on ito glass substrate;
F. evaporation metal negative electrode on the electron injecting layer in all slurry coating pans;
G. form the organic EL display panel that the three-color light-emitting unit by cross direction profiles constitutes through packaging technology.
9. the preparation method of organic EL display panel according to claim 8, it is characterized in that: in above-mentioned steps c, steps d and step e, thickness according to the equivalent layer of each functional layer of technological design organic EL display panel, by the control apparatus for coating, and then control application rate and coating thickness.
10. according to the preparation method of the described organic EL display panel of claim 8, it is characterized in that: in above-mentioned steps b, utilize etching technics to realize isolating the barrier moulding.
11. require the preparation method of 8 described organic EL display panels, it is characterized in that: in above-mentioned steps a, on clean ito glass substrate, utilize the inorganic material film of the mask plate deposition effective thickness of regular pattern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101508331A CN103208508A (en) | 2013-04-27 | 2013-04-27 | Organic electroluminescent display screen, coating device special for organic electroluminescent display screen and manufacturing method for organic electroluminescent display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101508331A CN103208508A (en) | 2013-04-27 | 2013-04-27 | Organic electroluminescent display screen, coating device special for organic electroluminescent display screen and manufacturing method for organic electroluminescent display screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103208508A true CN103208508A (en) | 2013-07-17 |
Family
ID=48755678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101508331A Pending CN103208508A (en) | 2013-04-27 | 2013-04-27 | Organic electroluminescent display screen, coating device special for organic electroluminescent display screen and manufacturing method for organic electroluminescent display screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103208508A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332450A (en) * | 2014-11-10 | 2015-02-04 | 京东方科技集团股份有限公司 | Mask plate for glass cement coating and coating method adopting same |
| CN107745581A (en) * | 2017-10-13 | 2018-03-02 | 纳晶科技股份有限公司 | Drain component and its application method and application |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060040133A1 (en) * | 2004-07-13 | 2006-02-23 | Wen-Jeng Lan | Electrode structure of organic electroluminescent display panel and method of manufacturing the same |
| CN101559669A (en) * | 2008-04-15 | 2009-10-21 | Icf科技有限公司 | Manufacturing method and device of thin film pattern layer |
| CN102324432A (en) * | 2002-11-06 | 2012-01-18 | 乐金显示有限公司 | Have the organic electroluminescence device of inclination dividing strip and apply manufacturing technology |
| CN102629671A (en) * | 2012-04-25 | 2012-08-08 | 上海大学 | Preparation method of organic electroluminescent device of silicon base micro display |
| CN102729628A (en) * | 2011-03-30 | 2012-10-17 | 精工爱普生株式会社 | Nozzle discharge quantity correction method and droplet discharging method |
-
2013
- 2013-04-27 CN CN2013101508331A patent/CN103208508A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324432A (en) * | 2002-11-06 | 2012-01-18 | 乐金显示有限公司 | Have the organic electroluminescence device of inclination dividing strip and apply manufacturing technology |
| US20060040133A1 (en) * | 2004-07-13 | 2006-02-23 | Wen-Jeng Lan | Electrode structure of organic electroluminescent display panel and method of manufacturing the same |
| CN101559669A (en) * | 2008-04-15 | 2009-10-21 | Icf科技有限公司 | Manufacturing method and device of thin film pattern layer |
| CN102729628A (en) * | 2011-03-30 | 2012-10-17 | 精工爱普生株式会社 | Nozzle discharge quantity correction method and droplet discharging method |
| CN102629671A (en) * | 2012-04-25 | 2012-08-08 | 上海大学 | Preparation method of organic electroluminescent device of silicon base micro display |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332450A (en) * | 2014-11-10 | 2015-02-04 | 京东方科技集团股份有限公司 | Mask plate for glass cement coating and coating method adopting same |
| US9673426B2 (en) | 2014-11-10 | 2017-06-06 | Boe Technology Group Co., Ltd. | Mask plate for coating glass cement and coating method using the same |
| CN107745581A (en) * | 2017-10-13 | 2018-03-02 | 纳晶科技股份有限公司 | Drain component and its application method and application |
| US11839886B2 (en) | 2017-10-13 | 2023-12-12 | Najing Technology Corporation Limited | Liquid guiding component and using method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103762224B (en) | Organic el display panel | |
| CN104465671B (en) | A kind of display base plate and preparation method thereof, display device | |
| CN104835832A (en) | Pixel arrangement structure, organic electroluminescent device, display device, and mask plate | |
| CN204614789U (en) | Pixel arrangement structure, organic electroluminescence device, display unit, mask plate | |
| US11903260B2 (en) | OLED display panel with same color sub-pixel groups | |
| TW201111047A (en) | Coating device and method for producing a coating layer using the same | |
| US9269752B2 (en) | Organic electroluminescence display | |
| CN103208508A (en) | Organic electroluminescent display screen, coating device special for organic electroluminescent display screen and manufacturing method for organic electroluminescent display screen | |
| CN111341807B (en) | Pixel defining structure and OLED display panel | |
| CN203787434U (en) | Organic light-emitting diode display panel | |
| US20170243930A1 (en) | Display panel | |
| CN105957879B (en) | Printed PM display panel and preparation method thereof | |
| CN111477618A (en) | Quantum dot full-color Micro/Mini-L ED display screen structure and manufacturing method thereof | |
| CN107732026A (en) | OLED substrate structure | |
| KR20160067544A (en) | Organic light emitting diode display device and method of manufacturing the same | |
| US11610951B2 (en) | Display panel and method for manufacturing same | |
| CN211858650U (en) | Quantum dot full-color Micro/Mini-LED display screen structure | |
| WO2023173511A1 (en) | Display panel | |
| CN105789254A (en) | AMOLED pixel structure and manufacturing method of AMOLED light-emitting layer | |
| CN111710696A (en) | Display panel and manufacturing method thereof | |
| KR100738106B1 (en) | Apparatus for fabricating color filter | |
| CN204257657U (en) | A kind of display base plate and display unit | |
| US20230106276A1 (en) | Organic light-emitting diode substrate and manufacturing method thereof | |
| KR20050083062A (en) | Display device, method of manufacturing thereof and device for drop filling an organic material | |
| CN112786669A (en) | OLED display panel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130717 |