CN106298691A - Organic light-emitting display device and manufacture method thereof - Google Patents
Organic light-emitting display device and manufacture method thereof Download PDFInfo
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- CN106298691A CN106298691A CN201510285952.7A CN201510285952A CN106298691A CN 106298691 A CN106298691 A CN 106298691A CN 201510285952 A CN201510285952 A CN 201510285952A CN 106298691 A CN106298691 A CN 106298691A
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Abstract
The present invention provides a kind of organic light-emitting display device, including: first substrate；The second substrate being oppositely arranged with first substrate；The monochromatic array of organic light emitting pixels being arranged between first substrate and second substrate, is arranged between first substrate and second substrate and surrounds the frit seal structure of this array of organic light emitting pixels；Wherein, this frit seal structure, first substrate and second substrate limit the closed space of this array of organic light emitting pixels accommodating jointly；Arranging color conversion layer on this second substrate, this color conversion layer includes quanta point material.The invention still further relates to the manufacture method of a kind of organic light-emitting display device.
Description
Technical field
The present invention relates to a kind of organic light-emitting display device and manufacture method thereof.
Background technology
Organic light-emitting display device uses one layer of organic material as the luminescent device of luminescent layer, when manufacturing organic light-emitting display device, needs isolation and seals in case extraneous aqueous vapor, oxygen enter and damages luminescent device.Use at present is to use lower glass or metal to work as cover plate in a nitrogen environment, and inside is pasted with hygroscopic agent or drying material, carry out sealing, with epoxy resin, the invasion preventing aqueous vapor with oxygen again, but this way can not be entirely prevented from the invasion of extraneous aqueous vapor and oxygen.
Summary of the invention
In view of this, it is necessary to provide and seal preferably organic light-emitting display device and manufacture method thereof.
A kind of organic light-emitting display device, including:
First substrate；
The second substrate being oppositely arranged with first substrate；
The monochromatic array of organic light emitting pixels being arranged between first substrate and second substrate, is arranged between first substrate and second substrate and surrounds the frit seal structure of this array of organic light emitting pixels；
Wherein, this frit seal structure, first substrate and second substrate limit the closed space of this array of organic light emitting pixels accommodating jointly；Arranging color conversion layer on this second substrate, this color conversion layer includes quanta point material.
Preferably, this color conversion layer includes shielding layer and color conversion unit, and this color conversion unit is formed with quanta point material doping by implant.
Preferably, this color conversion unit includes the first color conversion unit, the second color conversion unit and the 3rd color conversion unit；This shielding layer is used for being spaced this first, second and third color conversion unit.
Preferably, the material of this implant is that epoxy resin, acrylic plastics or other transparent materials are for strengthening the intensity of this second substrate.
Preferably, this frit seal structure is formed by frit, and this frit is deposited on the edge of this second substrate by precuring (pre-cured) or presintering (pre-sintered)；After this first substrate is fitted with this second substrate para-position, use this frit of LASER HEATING, make this frit and this first substrate and this frit seal structure of the sufficiently sealed formation of this second substrate.
Preferably, this frit is the low temperature glass frit containing one or more absorption ions.
A kind of manufacture method of organic light-emitting display device, including:
Monochromatic array of organic light emitting pixels is formed on first substrate；
On second substrate, form the color conversion layer of doped quantum dot material and surround the frit seal structure of this color conversion layer；And
This first substrate is fitted with this second substrate para-position, and use laser irradiates this frit seal structure and makes this first substrate seal with this second substrate.
Preferably, this frit seal structure is to be formed by frit, utilizes wire mark or some glue coating method that frit is coated on the edge of this second substrate.
Preferably, this color conversion layer includes shielding layer and color conversion unit, and on this second substrate, interval forms this shielding layer and by nanometer transfer printing technology, implant is formed in the interval region of this shielding layer of this second substrate this color conversion unit the most afterwards with quanta point material mixing and doping.
Preferably, this color conversion layer includes shielding layer and chromatic filter layer, and on this second substrate, interval forms this shielding layer and by ink-jet printing technology, implant and quanta point material mixing and doping are formed this color conversion layer the most afterwards.
Compared to prior art, organic light-emitting display device of the present invention uses frit seal structure, and frit seal structure is mainly inorganic material, therefore can block extraneous aqueous vapor and oxygen completely without attaching hygroscopic agent in organic light-emitting display device.Further, the color conversion layer of the organic light-emitting display device of the present invention includes that quantum dot film, quantum dot have good stability, and the fluorescence lifetime of quantum dot is long, thus increases the service life of organic light-emitting display device.
Accompanying drawing explanation
Fig. 1 is the structural representation of organic light-emitting display device the first embodiment of the present invention.
Fig. 2-Fig. 5 is manufacture method the first embodiment structural representation of organic light-emitting display device of the present invention.
Fig. 6 is manufacture method the first embodiment flow chart of organic light-emitting display device of the present invention.
Fig. 7 is the structural representation of organic light-emitting display device the second embodiment of the present invention.
Fig. 8-Figure 11 is manufacture method the second embodiment structural representation of organic light-emitting display device of the present invention.
Figure 12 is manufacture method the second embodiment flow chart of organic light-emitting display device of the present invention.
Main element symbol description
| Organic light-emitting display device | 10、20 |
| First substrate | 110、210 |
| Second substrate | 120、220 |
| Array of organic light emitting pixels | 130、230 |
| Frit seal structure | 140、240 |
| Closed space | 150、250 |
| Color conversion layer | 122、222 |
| Quanta point material | 160、260 |
| Upper electrode | 132、232 |
| Bottom electrode | 134、234 |
| Organic light emitting medium | 136、236 |
| Shielding layer | 124、224 |
| Color conversion unit | 126、226 |
| First color conversion unit | 1262、2262 |
| Second color conversion unit | 1264、2264 |
| 3rd color conversion unit | 1266、2266 |
| Frit | 142、242 |
| Implant | 1260、2260 |
| Step | S201~S207、S401~S407 |
Following detailed description of the invention will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Detailed description of the invention
Seeing also Fig. 1, Fig. 1 is organic light-emitting display device one embodiment structural representation of the present invention.Organic light-emitting display device (Organic Light Emitting Display, OLED) 10 includes first substrate 110, the second substrate 120 being oppositely arranged with this first substrate 110.The array of organic light emitting pixels 130 being arranged between first substrate 110 and second substrate 120.In the present embodiment, this array of organic light emitting pixels 130 is arranged on this first substrate 110.This organic light-emitting display device 10 also includes the frit seal structure (Frit being arranged between first substrate 110 and second substrate 120 and surrounding this array of organic light emitting pixels 130
sealing)140；Wherein, this frit seal structure 140, first substrate 110 and second substrate 120 limit the closed space 150 of this array of organic light emitting pixels accommodating jointly；On this second substrate 120, color conversion layer 122 is set, this color conversion layer 122 doped quantum dot material 160.
This array of organic light emitting pixels 130 includes electrode 132, bottom electrode 134 and is folded on this between electrode 132 and this bottom electrode 134 for sending monochromatic organic light emitting medium 136, apply voltage on this between electrode 132 and this bottom electrode 134, then this organic light emitting medium 136 is luminous.This first substrate 110 is used for controlling the luminous intensity of this array of organic light emitting pixels 130 for thin-film transistor array base-plate.In the present embodiment, this organic light emitting medium 136 sends monochromatic light blue light.Changing ground, this array of organic light emitting pixels 130 can farther include the universal architecture of the organic light-emitting structure such as electron emission layer, electron transfer layer, electricity hole transmission layer and electricity hole transport layer, therefore no longer this repeats.
This color conversion layer 140 receives the blue light that this organic light emitting medium 136 sends, and will inject after the blue light conversion of this color conversion layer 140 the original color component injection with colour display.This color conversion layer 122 includes shielding layer 124 and color conversion unit 126.This chromatic filter layer 126 includes the first color conversion unit the 1262, second color conversion unit 1264 and the 3rd color conversion unit 1266.This shielding layer 124 is used for being spaced this first, second and third color conversion unit 1262,1264 and 1266.This color conversion unit 126 is formed with quanta point material 160 doping by implant 1260.In the present embodiment, the material of this implant 1260 is epoxy resin, acrylic plastics or other transparent materials.
In the present embodiment, this shielding layer 124 is black matrix, this the first color conversion unit 1262 is red red quantum point doped with emission spectrum, this the second color conversion unit 1264 is green green quantum dot doped with emission spectrum, and the 3rd color conversion unit 1266 is blue green quantum dot doped with emission spectrum.Changing ground, the 3rd color conversion unit also can undope any quantum dot.
This frit seal structure 140 is formed by frit 142 (see Fig. 4).This frit 142 is deposited on the edge of this second substrate 120 by precuring (pre-cured) or presintering (pre-sintered).After this first substrate 110 is fitted with this second substrate 120 para-position, use this frit 142 of LASER HEATING, make this frit 142 and this first substrate 110 and this frit seal structure 140 of the sufficiently sealed formation of this second substrate 120.In the present embodiment, this frit 142 is the low temperature glass frit absorbing ion containing one or more, and this absorption ion can be the combination of one or more in the metal ions such as ferrum, copper, barium and neodymium.In the present embodiment, by adjusting the gap between this color conversion layer 122 of Altitude control of this frit seal structure 140 and this organic light emission picture element array 130, it is preferable that gapless between this color conversion layer 122 and this organic light emission picture element array 130.
Seeing also Fig. 2-Fig. 7, wherein Fig. 2-Fig. 6 is the first enforcement manufacture method structural representation of organic light-emitting display device 10 of the present invention, and Fig. 7 is the manufacture method flow chart of organic light-emitting display device of the present invention.
Step S201, refers to Fig. 2, forms this array of organic light emitting pixels 130 on first substrate 110.This array of organic light emitting pixels 130 is used for sending monochromatic light.
Step S203, refers to Fig. 3, forms color conversion layer 122 on this second substrate 120.Specifically, form this shielding layer 124 prior to interval on this second substrate 120 and implant 1260 is formed this color conversion unit 126 by nanometer transfer printing technology (Micro-contact Printing) the most afterwards with quanta point material 160 mixing and doping in the interval region of this shielding layer 124 of this second substrate 120.
Step S205, refers to Fig. 4, by frit 142 along the marginal deposit of this second substrate 120.As frit 142 is placed in the position away from about 1 millimeter of this second substrate 120 edge.In the present embodiment, this frit 142 comprises one or more low temperature glass frit absorbing ion, and this absorption ion can be ferrum, copper, barium and neodymium etc..In the present embodiment, utilize wire mark or Dispenser coating method that frit is coated on the edge of this second substrate 120.
Step S207, referring to Fig. 4, is deposited on this frit 142 edge of this second substrate 120, and arranges around this shielding layer 124 by precuring (pre-cured) or presintering (pre-sintered).
Step S209, refers to Fig. 5, and para-position is fitted this first substrate 110 and this second substrate 120, and uses this frit 142 of lf to form this frit seal structure 140.In other embodiments, infrared radiation source such as grade can be used to melt this frit 142.
Organic light-emitting display device 10 of the present invention uses frit seal structure 140, and frit seal structure 140 is mainly inorganic material, therefore can block extraneous aqueous vapor and oxygen completely without attaching hygroscopic agent in organic light-emitting display device.Further, the color conversion layer of the organic light-emitting display device of the present invention includes that quanta point material, quantum dot have good stability, and the fluorescence lifetime of quantum dot is long.The emission spectrum being controlled quantum dot by the size changing quantum dot can obtain color quantum point, and quantum dot has wide excitation spectrum and narrow emission spectra, and same excitaton source achieves that the quantum dot to different-grain diameter excites.Thus, this case uses the color conversion layer with quantum dot to change the light of reception and to penetrate with the primary colors color component of colour display, and it makes this organic light-emitting display device have preferably color saturation.Further, in the present invention, owing to using the color conversion layer of quantum dot and the polychrome organic luminous layer of traditional R, G, the B of non-usage obtains primary colors color component, make the structure for obtaining primary colors color component can be arranged at second substrate, and when utilizing laser frit seal method to seal, owing to there is this second substrate of color conversion layer also simultaneously as base plate for packaging, this color conversion layer is made to can also function as fender, ensure the mechanical strength when laser frit seal so that encapsulate the most reliable.
Referring to Fig. 7, Fig. 7 is organic light-emitting display device of the present invention second embodiment structural representation.Organic light-emitting display device (Organic Light Emitting Display, OLED) 20 includes first substrate 210, the second substrate 220 being oppositely arranged with this first substrate 210.The array of organic light emitting pixels 230 being arranged between first substrate 210 and second substrate 220, this array of organic light emitting pixels 230 is arranged on this first substrate 210.This organic light-emitting display device 20 also includes the frit seal structure (Frit being arranged between first substrate 210 and second substrate 220 and surrounding this array of organic light emitting pixels 230
sealing)240；Wherein, this frit seal structure 240, first substrate 210 and second substrate 220 limit the closed space 250 of this array of organic light emitting pixels accommodating jointly；On this second substrate 220, color conversion layer 222 is set, this color conversion layer 222 doped quantum dot material 260.
This array of organic light emitting pixels 230 includes electrode 232, bottom electrode 234 and the organic light emitting medium 236 being folded on this between electrode 232 and this bottom electrode, applies voltage on this between electrode 232 and this bottom electrode 234, then this organic light emitting medium 236 is luminous.This first substrate 210 is used for controlling the luminous intensity of this array of organic light emitting pixels 230 for thin-film transistor array base-plate.In the present embodiment, this organic light emitting medium 236 sends monochromatic light blue light.Changing ground, this array of organic light emitting pixels 130 can farther include the universal architecture of the organic light-emitting structure such as electron emission layer, electron transfer layer, electricity hole transmission layer and electricity hole transport layer, therefore no longer this repeats.
This color conversion layer 222 receives the blue light that this organic light emitting medium 236 sends, and will inject after the blue light conversion of this color conversion layer 222 the original color component injection with colour display.This color conversion layer 222 includes shielding layer 224 and color conversion unit 226.This chromatic filter layer 226 includes the first color conversion unit the 2262, second color conversion unit 2264 and the 3rd color conversion unit 2266.This shielding layer 224 is used for being spaced this first, second and third color conversion unit 2262,2264 and 2266.This color conversion unit 226 is formed with quanta point material 260 doping by implant 2260.
In the present embodiment, this shielding layer 224 is sept (spacer), this the first color conversion unit 2262 is red red quantum point doped with emission spectrum, this the second color conversion unit 2264 is green green quantum dot doped with emission spectrum, and the 3rd color conversion unit 2266 undopes any quantum dot.Changing ground, the 3rd color conversion unit 2266 emission spectrum that also can adulterate is blue quantum dot.
This frit seal structure 240 is formed by frit 242.This frit 22 is deposited on the edge of this second substrate 220 by precuring (pre-cured) or presintering (pre-sintered).After this first substrate 210 is fitted with this second substrate 220 para-position, use this frit 242 of LASER HEATING, make this frit 242 and this first substrate 210 and this frit seal structure 240 of the sufficiently sealed formation of this second substrate 220.In the present embodiment, this frit 242 is the low temperature glass frit absorbing ion containing one or more, and this absorption ion can be the combination of one or more in the metal ions such as ferrum, copper, barium and neodymium.In the present embodiment, by adjusting the gap between this color conversion layer 222 of Altitude control of this frit seal structure 240 and this organic light emission picture element array 230, it is preferable that gapless between this color conversion layer 222 and this organic light emission picture element array 230.
Seeing also Fig. 8-Figure 12, wherein Fig. 8-Figure 11 is the second embodiment manufacture method structural representation of organic light-emitting display device 20 of the present invention, and Figure 12 is the manufacture method flow chart of organic light-emitting display device of the present invention.
Step S401, refers to Fig. 8, forms this array of organic light emitting pixels 230 on first substrate 210.This array of organic light emitting pixels 130 is used for sending monochromatic light.
Step S403, referring to Fig. 9, on this second substrate 220, interval forms this shielding layer 224 and forms this color conversion layer 226 by ink jet printing (Ink-jetting Printer) technology in this shielding layer 224 interval region of this second substrate 220.In the present embodiment, first implant 2260 and quanta point material 260 mixing and doping are formed this color conversion layer 226 by ink-jet printing technology the most afterwards.In other embodiments, silk screen printing (Screen can be combined by ink jet printing
Printer) technology forms this shielding layer 224 and this color conversion layer 226.
Step S405, refers to Figure 10, by frit 242 along the marginal deposit of this second substrate 220.As frit 242 is placed in the position away from about 1 millimeter of this second substrate 220 edge.In the present embodiment, this frit 242 comprises one or more low temperature glass frit absorbing ion, and this absorption ion can be ferrum, copper, barium and neodymium etc..In the present embodiment, utilize wire mark or some glue (Dispenser) coating method that frit is coated on the edge of this second substrate 220.
Step S407, refers to Figure 10, and this frit 242 is deposited on the edge of this second substrate 220 by precuring (pre-cured) or presintering (pre-sintered).
Step S409, refers to Figure 11, and para-position is fitted this first substrate 210 and this second substrate 220, and uses this frit 242 of lf to form this frit seal structure 240.In other embodiments, infrared radiation source such as grade can be used to melt this frit.
Organic light-emitting display device 20 of the present invention uses frit seal structure 240, and frit seal structure 240 is mainly inorganic material, therefore can block extraneous aqueous vapor and oxygen completely without attaching hygroscopic agent in organic light-emitting display device.Further, the color conversion layer of the organic light-emitting display device of the present invention includes that quanta point material, quantum dot have good stability, and the fluorescence lifetime of quantum dot is long.The emission spectrum being controlled quantum dot by the size changing quantum dot can obtain color quantum point, and quantum dot has wide excitation spectrum and narrow emission spectra, and same excitaton source achieves that the quantum dot to different-grain diameter excites.Thus, this case uses the color conversion layer with quantum dot to change the light of reception and to penetrate with the primary colors color component of colour display, and it makes this organic light-emitting display device have preferably color saturation.Further, this shielding layer 240 adulterates implant to strengthen the intensity of this second substrate 220.Further, in the present invention, owing to using the color conversion layer of quantum dot and the polychrome organic luminous layer of traditional R, G, the B of non-usage obtains primary colors color component, make the structure for obtaining primary colors color component can be arranged at second substrate, and when utilizing laser frit seal method to seal, owing to there is this second substrate of color conversion layer also simultaneously as base plate for packaging, this color conversion layer is made to can also function as fender, ensure the mechanical strength when laser frit seal so that encapsulate the most reliable.
Although the present invention is disclosed above with embodiment; so it is not limited to the present invention; any art has usually intellectual; without departing from the spirit and scope of the invention; when can make a little change with retouching, therefore the protection domain of the present invention when depending on after attached the defined person of claim be as the criterion.
Claims (10)
1. an organic light-emitting display device, including:
First substrate；
The second substrate being oppositely arranged with first substrate；
The monochromatic luminous array of organic light emitting pixels being arranged between first substrate and second substrate, is arranged between first substrate and second substrate and surrounds the frit seal structure of this array of organic light emitting pixels；
Wherein, this frit seal structure, first substrate and second substrate limit the closed space of this array of organic light emitting pixels accommodating jointly；Arranging color conversion layer on this second substrate, this color conversion layer includes quanta point material.
2. organic light-emitting display device as claimed in claim 1, it is characterised in that this color conversion layer includes shielding layer and color conversion unit, this color conversion unit is formed with quanta point material doping by implant.
3. organic light-emitting display device as claimed in claim 2, it is characterised in that this color conversion unit includes the first color conversion unit, the second color conversion unit and the 3rd color conversion unit；This shielding layer is used for being spaced this first, second and third color conversion unit.
4. organic light-emitting display device as claimed in claim 2, it is characterised in that the material of this implant is that epoxy resin, acrylic plastics or other transparent materials are for strengthening the intensity of this second substrate.
5. organic light-emitting display device as claimed in claim 1, it is characterized in that, this frit seal structure is formed by frit, and this frit is deposited on the edge of this second substrate by precuring (pre-cured) or presintering (pre-sintered)；After this first substrate is fitted with this second substrate para-position, use this frit of LASER HEATING, make this frit and this first substrate and this frit seal structure of the sufficiently sealed formation of this second substrate.
6. organic light-emitting display device as claimed in claim 5, it is characterised in that this frit is the low temperature glass frit containing one or more absorption ions.
7. a manufacture method for organic light-emitting display device, including:
Monochromatic luminous array of organic light emitting pixels is formed on first substrate；
The color conversion layer of doped quantum dot material is formed on second substrate；
The frit seal structure of formation this color conversion layer of encirclement it is formed on the second substrate of color conversion layer in this；And
This first substrate is fitted with this second substrate para-position, and use laser irradiates this frit seal structure and makes this first substrate seal with this second substrate.
8. the manufacture method of organic light emitting apparatus as claimed in claim 7, it is characterised in that this frit seal structure is to be formed by frit, utilizes wire mark or some glue coating method that frit is coated on the edge of this second substrate.
9. the manufacture method of organic light emitting apparatus as claimed in claim 8, it is characterized in that, this color conversion layer includes shielding layer and color conversion unit, and on this second substrate, interval forms this shielding layer and by nanometer transfer printing technology, implant is formed in the interval region of this shielding layer of this second substrate this color conversion unit the most afterwards with quanta point material mixing and doping.
10. the manufacture method of organic light emitting apparatus as claimed in claim 8, it is characterized in that, this color conversion layer includes shielding layer and chromatic filter layer, and on this second substrate, interval forms this shielding layer and by ink-jet printing technology, implant and quanta point material mixing and doping are formed this color conversion layer the most afterwards.
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