• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The multicolor display device comprises a transparent substrate 22, red and green fluorescent dyes 21 ink jet printed onto the substrate, a conductive layer 23 deposited throughout the red and green dyes, and an organic blue light emitting layer deposited throughout the conductive layer. 24, and electrical contacts deposited over the blue light emitting layer.
    公开号:KR20000062303A
    申请号:KR1019997005721
    申请日:1997-12-23
    公开日:2000-10-25
    发明作者:마크이. 톰슨；스티븐알. 포레스트
    申请人:엘렌 제이. 시니스갈리；더 트러스티즈 오브 프린스턴 유니버시티；데니스 에프. 다우어티；더 유니버시티 오브 서던 캘리포니아；
    IPC主号:
    专利说明:

    Multicolor Display Devices
    Display devices using fluorescent media capable of absorbing and emitting light at long wavelengths are known. For example, see US Pat. No. 5,294,870 entitled “Organic Electroluminescent Multicolor Image Display Apparatus” by the inventor of Tang et al., The entire details of which are hereby incorporated by reference. However, the fluorescence medium in such devices is deposited using patterning techniques such as photolithography, which is expensive to perform. Therefore, there is a need for a method in which a fluorescent medium can be accurately deposited at low cost on a substrate to make a multicolor display device.
    Summary of the invention
    The present invention relates to display devices each comprising a substrate and a fluorescent dye deposited on the substrate. The invention further includes methods of manufacturing such display devices using ink jet printing techniques. Such devices are advantageous in that fluorescent dyes can deposit very large areas or very narrow areas at high resolution at low cost. As a result, they can be used in practically any display device of present application.
    In an embodiment of the present invention, red, green and / or blue fluorescent dyes are ink jet printed onto a transparent substrate to produce an image according to a given configuration. The image thus produced is then exposed to ultraviolet or short wavelength radiation to make a luminescent color display and to activate the dye. Such displays are "passive" in that the image is fixed in the initial printed configuration.
    In another embodiment of the present invention, red, green and / or blue fluorescent dyes are ink jet printed again in a predetermined configuration on a transparent substrate. Thereafter, a transparent, conductive material is deposited on the dye. An organic, blue light emitting device (OBLED) layer is deposited over the transparent, conductive material layer, and the conductive layer is deposited over the OBLED layer. The potential application to the conductive layers radiates the OBLED layer to cause blue light emission, and blue light emission stimulates fluorescence emission in the dyes as long as the blue light energy is greater than the light emission energy of the dyes.
    In another embodiment of the present invention, the red, green and blue light emitting regions are ink jet printed in a predetermined configuration on a transparent substrate. Red and green light emitting regions are formed by ink jet printing red and green fluorescent dyes on the substrate. No ink is deposited in the blue light emitting regions. More precisely, blue light emitting areas are left empty when red and green dyes are printed. After the red and green dyes are printed, a transparent, conductive material layer is deposited across the red and green dyes and the void space left for the blue light emitting regions. An organic, blue light emitting device (OBLED) layer is then deposited over the layer of transparent, conductive material. Electrical contacts are then placed over the OBLED corresponding to the respective red, green and blue light emitting area points to facilitate voltage application to the OBLED. The OBLED emits blue light in the blue light emitting regions, and further stimulates the fluorescence emission in the red and green light emitting regions thereby creating a light emitting color display. The red and green dyes in this embodiment preferably have a strong absorption rate for blue, more preferably a high conversion efficiency of blue / red and blue / green.
    In another embodiment of the present invention, the red, green and blue light emitting regions are ink jet printed in the form of pixels on a transparent substrate. Each pixel is a unit element comprising each of red, green and blue light emitting regions. The fourth embodiment is made in a similar manner to the third embodiment, but the basic difference is that the light emitting regions of the third embodiment are arranged in a predetermined configuration, while the light emitting regions of the fourth embodiment are tri-color pixels. Is arranged in groups.
    The displays of the present invention can be used in a wide range of products, including telecommunications devices, televisions, computers, including telephones, automobiles, billboards or billboards, or screens such as large area walls, theaters or stadium screens. In addition, since the display devices of the present invention can be made using sufficiently flat substrates, it is expected that the devices can be used with a xerography method without the need to focus on the press bar.
    Brief description of the drawings
    1 is a cross-sectional view of a multi-color display device according to a first embodiment of the present invention.
    2 is a cross-sectional view of a multi-color display device according to a second embodiment of the present invention.
    The present invention relates to display devices, and more particularly to multicolor display devices using fluorescent dyes deposited by ink jet printing.
    The present invention relates to the construction of high resolution, full color displays using printing techniques (hereinafter referred to as " ink jet printing ") which deliver a small amount of liquid ink to a substrate in a particular pattern.
    The liquid inks of the present invention preferably comprise a host matrix in selected fluorescent dyes and a liquid carrier medium. The liquid carrier medium is preferably alcohol, water, or mixtures of the same, such as methanol, ethanol, or isopropanol. Special carrier media are typically selected based on their ability to disperse fluorescent dyes in the molecular state and compatibility with the particular materials to which they are contacted.
    The amount of host matrix is typically selected to be a viscosity suitable for ink jet printing processes and is preferably in the range of 2-7 wt%. The amount of dye should be chosen to be sufficient to be a good color intensity, but it is chosen so that the color intensity is too high to cause dye molecules to agglomerate and reduce the luminescence intensity. Preferred amounts of dyes range from 0.1-6 wt% of the matrix.
    Typically, the liquid inks of the present invention comprise one or more dyes that emit light in red, green or blue, which dyes are used to make light emitting areas of appropriate color tone. The color of the emission region is determined by the relative ratio of the fluorescent energy of the dye and the dye. The dyes are preferably selected to optimize saturation (e.g., narrow lines of 460, 520 and 650 nm respectively for blue, green and red) to allow the devices produced to represent a wide color range.
    Preferred dyes mainly contained in blue luminescence: 8-anilino-1-naphthalenesulfonic acid, 1,3-diphenyl-1,3-butadiene, diphenylhexatriene, Hoescht 33324, thioflavin T, diami Dio-2-phenylindole * 2HCL, Comarin 152, Comarin 20, Comarin 2, Comarin 339, Comarin 1, Comarin 138, Comarin 102, Comarin 314 and Comarin 30.
    Preferred dyes mainly contained in green luminescence: acridine orange, acridine yellow, acriflavin, dichlorofluorescein, 3,6-diaminoacridine, fluorescein isothiocyanate, lucifer yellow, quinacrine Rhodamine 123, Coinacridone, Dimethylcuinacridone, Fluorense, Rhodamine 110, Rhodamine 6G and Comarin 6.
    Preferred dyes mainly contained in red luminescence: xylenol orange, lumogen red, cresyl violet, diethylthiacarbosian, ethidium bromide, oxazine 170, nile blue, oxazine 1, 1,3- Bis [4- (dimethylamino) phenyl] -2,4-dihydroxycyclobutenediyllium, and 1,3-bis [4- (dimethylamino) -2-hydroxyphenyl] -2,4-dihydro Roxycyclobutenedilium.
    In an embodiment, the liquid inks of the present invention are located in the wells of an ink jet printer, and the individual dots on the substrate in an appropriate proportion to represent the colors of the desired image at the printer's resolution (typically 300-600 dpi). Are mixed in. The green, blue and red groups are alternately deposited side by side as individual pixels of total natural color. The thickness of the deposited dye layer will be adjusted to optimize the luminescence intensity.
    The currently selected ink jet printing apparatus is an Epson Stylus Color 500. It can be used as a printer, but the embodiment selected in the present invention encompasses the use of a stylus within the plotter range. Although more expensive, the plotter improves accuracy, reduces the difficulty of indexing (e.g., deposits multiple layers at that event), and nonlinear characteristics (e.g., interconnects). To improve operation.
    The host matrix for the fluorescent dyes of the present invention may include small molecules that readily form polymeric materials or stable glassy thin films. Examples included in polymer matrix materials: polymethylmethacrylate, polyvinylcarbazole, polybutadiene, and polyester. Examples of small molecules are N, N'-diphenyl-N, N'bis (3-methylphenyl) -1,1'-biphenyl-4,4'-diamine. This is a high quality glass forming material that can be used as a hole transporter in OLEDs and has its maximum absorption in the UV portion of the spectrum. The choice of matrix materials among others is based on the stability of the other materials under printing conditions, the light generated by the dyes as well as their ability to pass the ultraviolet light used to cause the dyes to fluoresce, and the dye agglomeration. It will depend on their ability to stabilize the dyes and inhibit phase separation.
    The emission wavelength used to cause the dyes to emit fluorescence should be maximized in order to reduce the fluorescence energy (which indicates a tendency for the display to deteriorate), but must have greater energy than the light generated by the dyes. do. For this reason, the emission wavelength is usually blue in the near ultraviolet region.
    Substrates affecting the application should be sized to be flexible enough to adjust its use in an ink jet printing apparatus and must effectively transmit ultraviolet radiation, visible radiation, or both. . The substrate is desirable to filter out higher energy ultraviolet radiation, while transmitting visible and near ultraviolet radiation. The materials of choice are glass films (Pyrex ™ ) which are more preferred glass due to the flexible polyester and its low oxygen permeability.
    A first embodiment of the invention is shown in FIG. In this embodiment, the luminescent color display 10 is made by ink jet printing regions of the fluorescent dye 11 on the front surface of the substrate 12. The front surface of the substrate 12 is then exposed to blue or UV radiation which stimulates the fluorescence emission of the dye 11. The color of the exposed dye region can be controlled by varying the relative amounts of red, green and blue dyes in that region. The substrate 12 must transmit the color produced by the excited dye 11, while it is desirable to filter out large energy UV radiation.
    In a substrate that separates the dye and the radiation source, the dye may also be emitted from the radiation source on the rear surface of the substrate. In this case, the substrate must transmit blue and / or ultraviolet wavelengths that excite the dye, while high energy UV radiation is preferably filtered off.
    Optionally, additional layers may be provided surrounding the dye. In this case, one layer separates the viewer from the dye and the other layer separates the radiation source from the dye. The materials described above are preferred for use in both layers. The dye may be deposited in one of these layers.
    Blue / ultraviolet radiation sources are not so important. For example, it can be a routine light source such as a fluorescent tube (eg black light). As another example, the light source may be a simple device such as a flat OBLED layer located between two flat conductive layers, one of which transmits illumination radiation. More elaborate forms of such devices (devices comprising individual electrical connections for each dye region) are discussed in detail below. The ultimate wavelength of the radiation emitted by the light source should be shorter than the shortest wavelength of light emitted by the dye.
    The display of FIG. 1 is passive in that it is limited by the printed configuration, and individual printed areas of the fluorescent dye are not individually radiated. One advantage of this device is that no separate electrical connections are required in each area.
    Further embodiments of the device structure of the invention are based on the arrangements shown in FIG. In such embodiments, the red and green fluorescent dyes 21 are ink jet printed onto a transparent substrate 22 such as glass, the transparent, conductive layer 23 is deposited throughout the red and green dyes, and the organic blue light emission Device (OBLED) layer 24 is deposited over the OBLED layer, and electrical contacts 25 are deposited over the OBLED layer.
    A preferred material for the transparent, conductive layer 23 is indium-tin oxide (ITO). One desirable property of ITO is that it is destructive and its ability to filter out large amounts of ultraviolet radiation, while transmitting visible and near ultraviolet radiation.
    Layer 23 may be formed by typical sputtering methods or electron beam vapor deposition methods, and typically has a thickness range of 1000-4000 mm 3. Below a certain thickness, the problem of increasing the layer's resistance begins, and when above a certain thickness, the marginal utility is ignored. The deposition of layer 23 is preferably processed under vacuum.
    After the conductive layer 23 is deposited, the OBLED layer 24 is preferably deposited to a thickness of usually 400-1000 kPa by thermal evaporation methods. The final thickness will depend on the OBLED. It would be desirable to make this thickness as thin as possible to lower the voltage of the device without seriously compromising quantum efficiency. The deposition of layer 24 is preferably processed under vacuum. The device is preferably not exposed to moisture, oxygen or other contaminants between layer 23 and layer 24 deposition.
    The OBLED layer 24 is made from suitable blue luminescent organic compounds such as, for example, metal bidentate ligand complexes, aromatics and heterocyclic polymers described below.
    Looking at PCT WO 96/19792, entitled “Multicolor Organic Light Emitting Devices,” details of the invention are incorporated by reference, and metal bidentate composites that can be used in layer 24 are disclosed. Are of the formula MDL 4 2 . Where M is selected from trivalent metals and lanthanides of groups 3-13 of the periodic table.
    Preferred metal ions are Al +3 , Ga +3 , In +3 and Sc +3 . D is 2-picoryl ketones, 2-quine andyl ketones and 2- (O-pinoxy) pyridine ketone. Preferred groups for L 4 include acetylacetonate, compounds of the formula OR 3 R. Wherein R 3 is selected from Si and C, and R is hydrogen and unsubstituted alkyl, aryl and heterocyclic groups; 3,5-di (t-bu) phenol; 2,6-di (t-bu) phenol; 2,6-di (t-bu) cresol; And H 2 BPz 2 . As an example, the wavelength of the photoluminescence measurement in the solid state of aluminum (picorimethylketone) bis [2,6-di (t-bu) phenoxide] is 420 nm. Cresol derivatives of this compound are also measured at 420 nm. Aluminum (picorylmethylketone) bis (OsiPh 3 ) and scandium (4-methoxy-picorylmethylketone) bis (acetylacetonate) are each measured at 433 nm. Whereas aluminum [2- (O-pinoxy) pyridine] bis [2,6-di (t-bu) phenoxide] is measured at 450 nm. Polymers of aromatic and heterocyclic compounds having fluorescent properties in the solid state can be used as the layer 24. Examples of such polymers include poly (phenylene), and poly (N-vinylcarbazole).
    Additional OLED materials are described in, for example, US Pat. No. 5,294,870 entitled “Organic Electroluminescent Multicolor Image Display Device” by the inventor of Tang et al .; Hosokawa et al., “Highly efficient blue electroluminescence from a distyrylarylene emitting layer with a new dopant, "Applied physics letter, 67 (26), PP. 3853-3855, December 25, 1995; Adachi et al.," Blue light-emitting organic electroluminescent devices, "Applied physics letter, 56 ( 9), PP. 799-801, February 26, 1990; Burrows et al., "Color-Tunable Organic Light Emitting Devices," Applied Physics Letter, Vol. 69, PP. 2959-2961, November 1996 11 I) Known in the art. This is the entirety of these references.
    Distyrylarylene derivatives by Hosokawa et al., Mentioned above, are a class of preferred compounds. Other preferred OLEDs are described in co-pending applications, discussed below.
    Deposition of electrical contacts 25 may be performed by vapor deposition or other suitable metal deposition techniques. Preferred methods of depositing such contacts are performed by ink jet printing as described, for example, in US Pat. Nos. 4,668,533, 5,132,248 and 5,266,098, the descriptions of which are hereby incorporated by reference in their entirety. These electrical contacts can be made from indium, platinum, gold, silver or compounds such as Ti / Pt / Au, Cr / Au or Mg / Ag. Mg / Ag contacts are preferred.
    The embodiments discussed above in connection with FIG. 2 have substantially the same device structure. The basic difference is that the light emitting regions of the embodiment are arranged in pixels and are therefore useful for making flat screen monitors and such active displays. In contrast, the light emitting regions of another embodiment are arranged in a predetermined configuration. Thus, this embodiment uses the red, green and blue areas described above, or mixes the appropriate amounts of red, green and blue in a given area to obtain a special color corresponding to each part of the display. Suitable for writing numbers, segmental displays.
    In view of the above, the display devices of the present invention have a wide range of applications including telephones, televisions, large area wall screens, telecommunication devices such as theater screens and stadium screens, billboards and billboards, and computer monitors. It will be appreciated that it is suitable for application groups.
    The invention described herein relates to co-pending applications ("High Reliability, High Efficiency, Integratable Organic Light Emitting Devices and Methods of Producing Same," Patent Attorney No. 10020/1; "Novel Materials for Multicolor LED's," Patent Attorney No. 10020/2; "Electron Transporting and Light Emitting Layers Based on Organic Free Radicals," Patent Attorney No. 10020/3; "Red-Emitting Organic Light Emitting Devices (LED's)," Patent Attorney No. 10020/5; "High Efficiency Organic Light Emitting Device Structures, "Patent Attorney No. 10020/7). Each pending application was filed on the same date as the present invention, whereby each pending application was incorporated by reference in its entirety. The invention described herein may also be used with co-pending applications (US Patent Application Nos. 08 / 354,674; 08 / 613,207; 08 / 632,316; 08 / 693,359; 60 / 010,013; and 60 / 024,001). As such, each pending application is also incorporated by reference in its entirety.
    The following examples are merely illustrative of the present invention and are not intended to limit the scope of the present invention.
    Example 1: Passive image radiated from the backside using UV.
    In order to print a fluorescent image or pixel array using an ink jet printer or other ink delivery system, the ink is first prepared to match the optimum viscosity and other solution characteristics of the selected printer. These inks consist of a carrier solvent, approximately 1-10 wt% matrix material and 0.001-0.05 wt% fluorescent dye. The dyes are chosen to achieve the desired color tone (typically red, green and blue), and the matrix material is chosen for stable film formation that retains the dye and prevents agglomeration of the dye. The three wells of the printer are filled with red, green and blue inks. Images are printed directly on polymer or glass substrates. If it is necessary to obtain a suitable color, the inks are mixed by an ink jet printer at each pixel. Each pixel brightness is adjusted by varying the total amount of ink deposited on each pixel. If the amount of ink is small, most of the emitted light passes through the film, resulting in less visible light. If the amount of the deposited ink is large, the absorbance of the emitted light is large and a relatively large amount of visible light is generated from the fluorescent dye. The color of each pixel is precisely determined by the ratios of the individual red, green and blue inks.
    Example 2: Making a Passive Image Radiated from the Backside Using OLED.
    In order to print a fluorescent image or pixel array using an ink jet printer or other ink delivery system, the inks are first prepared to match the optimum viscosity and other solution characteristics of the selected printer. These inks consist of a carrier solvent, approximately 1-10 wt% matrix material and 0.001-0.05 wt% fluorescent dye. The dye is chosen to obtain the desired color tone (typically red, green or blue), and the matrix material is chosen to form a stable film that holds the dyes and prevents agglomeration of the dyes. The three wells of the printer are filled with red, green and blue inks. The image is printed directly onto the polymer or glass substrate. If it is necessary to obtain an appropriate color, the inks are mixed by an ink jet printer at each pixel. The color of each pixel is accurately determined by the ratio of the individual red, green and blue inks. The thickness of the fluorescent film is chosen to be less than or equal to 10% transparency at the intended emission wavelength. The transparent conductive material layer is then applied throughout the printed substrate. This conductive material is an indium-tin oxide film (deposited by sputtering) or a conductive polymer (applied by spray or other large area technology) or any other transparent conductive material that can be used as an anode in an OLED. Multi-layers are then deposited throughout the substrate to create an active multi-layer OLED structure. The composition and structure of these organic multilayers are chosen such that the output of the OLED and the selected red, green and blue dyes match the absorption spectra and are well known to those skilled in the art of manufacturing organic light emitting devices. A mask is then applied and a film of a low work function is deposited over each pixel defined by the ink jet printer. Applying a bias between the conductive film and the metal electrode stimulates the dye regions emitting red, green and blue light to emit light. Each pixel brightness is controlled by specifying a current level in the OLED. The color of a given pixel is controlled by the ratio of the red / green / blue fluorescent dyes film.
    Example 3: Making an Array of Pixels Radiated from the Backside Using OBLED.
    In order to print a fluorescent image or pixel array using an ink jet printer or other ink delivery system, the inks are first prepared to match the optimum viscosity and other solution characteristics of the selected printer. These inks consist of a carrier solvent, approximately 1-10 wt% matrix material and 0.001-0.05 wt% fluorescent dye. The dye is selected to obtain the desired color tone (red and green), and the matrix material is selected to form a stable film that retains the dyes and prevents agglomeration of the dyes. The wells of the printer are filled with red and green inks. The image is printed directly onto the polymer or glass substrate. The printer is used to deposit individual red and green fluorescent elements onto the substrate. The thickness of the red and green fluorescent films is chosen to achieve a transparency of 10% or less at the intended emission wavelength. The transparent conductive material layer is then applied throughout the printed substrate. This conductive material may be an indium-tin oxide film (deposited by sputtering) or a conductive polymer (applied by spray or other large area technology) or any other transparent conductive material that can be used as an anode in an OLED. Multi-layers are then deposited throughout the substrate to create an active multi-layer OBLED structure. The composition and structure of these organic multilayers are chosen to match the output of the OBLED and the absorption spectra of the selected red and green dyes and are well known to those skilled in the art of manufacturing organic light emitting devices. A mask is then applied and a metal film with low work function is deposited over each pixel defined by the ink jet printer. Applying a bias between the conductive film and the metal electrode stimulates the red or green emitting dye regions to emit light, and the intensity of the emitted light is directly dependent on the intensity of the OBLED used to emit it. Each pixel brightness is controlled by specifying a current level in the OBLED. Areas of the substrate that are not covered with red or green fluorescent dye will be open and blue light will be transmitted from the OBLED. Color mixing is obtained by controlling the intensity of the individual red, green and blue pixels.
    权利要求:
    Claims (30)
    [1" claim-type="Currently amended] In the display,
    Transparent substrates;
    A fluorescent dye containing material in a dye layer deposited on the substrate by ink jet printing; And
    Radiation source for emitting the fluorescent dye
    Display comprising a.
    [2" claim-type="Currently amended] The method of claim 1,
    The substrate has a front side and a rear side, transmits ultraviolet radiation,
    The fluorescent dye-containing material is provided on the front surface of the substrate,
    And the radiation source is positioned to radiate the back side of the substrate.
    [3" claim-type="Currently amended] The method of claim 1, wherein the substrate transmits visible radiation, and the fluorescent dye-containing material is deposited on the substrate in a pattern forming a plurality of light emitting regions, and at least one portion of the light emitting regions is red fluorescent. A display comprising one or more fluorescent dyes selected from dyes, green fluorescent dyes and blue fluorescent dyes, the display comprising:
    A transparent, conductive layer covering the light emitting regions;
    An organic blue light emitting device (OBLED) covering the transparent, conductive layer; And
    Electrical contacts connected to the organic blue light emitting device
    The display further includes.
    [4" claim-type="Currently amended] The display of claim 3, wherein the light emitting areas comprise red, green and blue light emitting areas arranged in a predetermined configuration.
    [5" claim-type="Currently amended] The light emitting device of claim 4, wherein the red, green, and blue light emitting regions are arranged in pixels, and each pixel includes one red light emitting region, one green light emitting region, and one blue light emitting region. A display connected to the organic blue light emitting device in the red, green and blue light emitting regions.
    [6" claim-type="Currently amended] The method of claim 4, wherein
    Each of the red light emitting regions comprises a red fluorescent dye region, and each of the green light emitting regions comprises a green fluorescent dye region; And
    Wherein said organic blue light emitting device directly emits blue light in respective blue light emitting regions, and wherein said organic blue light stimulates fluorescent dye in each red and green light emitting region.
    [7" claim-type="Currently amended] The display of claim 3, wherein the transparent, conductive layer comprises indium-tin oxide (ITO).
    [8" claim-type="Currently amended] The display of claim 1, wherein the fluorescent dye containing material comprises one or more fluorescent dyes and a matrix material.
    [9" claim-type="Currently amended] The display of claim 8, wherein the dye is present in an amount in the range of about 0.1-6 wt% relative to the matrix material.
    [10" claim-type="Currently amended] 9. The method of claim 8 wherein the matrix material is polymethylmethacrylate, polyvinylcarbazole, polybutadiene, polyester and N, N'-diphenyl-N, N'bis (3-methylphenyl) -1-1 ' Display selected from -biphenyl-4,4'-diamine.
    [11" claim-type="Currently amended] The display of claim 1, wherein the substrate is selected from glass and polyester.
    [12" claim-type="Currently amended] In the display manufacturing method,
    Providing a transparent substrate;
    Depositing an ink comprising fluorescent dye on the substrate by ink jet printing; And
    Providing an ultraviolet or blue light radiation source
    How to include.
    [13" claim-type="Currently amended] The method of claim 12,
    The substrate has a front side and a rear side, the substrate transmits ultraviolet radiation,
    The fluorescent dye is deposited on the front surface of the substrate,
    And the radiation source lies behind the substrate to expose the radiation.
    [14" claim-type="Currently amended] The method of claim 12, wherein the substrate transmits visible radiation, and the fluorescent dye is deposited on the substrate in a pattern forming a plurality of light emitting regions, wherein at least one portion of the light emitting regions is a red fluorescent dye, a green fluorescent dye, and Comprising one or more fluorescent dyes selected from blue fluorescent dyes,
    Forming a transparent, conductive layer covering the light emitting regions;
    Forming an organic blue light emitting device covering the transparent, conductive layer; And
    Forming an electrical contact connected to the organic blue light emitting device
    How to include more.
    [15" claim-type="Currently amended] 15. The method of claim 14, wherein the light emitting areas comprise red, green and blue light emitting areas arranged in a predetermined configuration.
    [16" claim-type="Currently amended] 16. The device of claim 15, wherein the red, green, and blue light emitting regions are arranged in pixels, each pixel comprising one red light emitting region, one green light emitting region, and one blue light emitting region, and wherein the electrical contact is And a display coupled to the organic blue light emitting device in the red, green and blue light emitting regions.
    [17" claim-type="Currently amended] 16. The light emitting device of claim 15, wherein each of the red light emitting regions comprises a red fluorescent dye region and each of the green light emitting regions comprises a green fluorescent dye region, wherein the organic blue light emitting device comprises blue light in each of the blue light emitting regions. Direct emission, and the organic blue light stimulates fluorescent dyes in the respective red and green light emitting regions.
    [18" claim-type="Currently amended] 13. The method of claim 12, wherein the ink comprises one or more fluorescent dyes, a matrix material and a liquid carrier medium.
    [19" claim-type="Currently amended] The method of claim 18, wherein the ink comprises about 2-7 wt% of matrix material.
    [20" claim-type="Currently amended] The method of claim 18, wherein said dye is present in an amount in the range of about 0.1-6 wt% relative to said matrix material.
    [21" claim-type="Currently amended] 19. The process of claim 18 wherein the matrix material is polymethylmethacrylate, polyvinylcarbazole, polybutadiene, polyester and N, N'-diphenyl-N, N'bis (3-methylphenyl) -1,1'- Biphenyl-4,4'-diamine.
    [22" claim-type="Currently amended] The method of claim 12, wherein the substrate is selected from glass and polyester.
    [23" claim-type="Currently amended] A computer comprising the display of claim 1.
    [24" claim-type="Currently amended] A television comprising the display of claim 1.
    [25" claim-type="Currently amended] A large area wall, theater or stadium screen comprising the display of claim 1.
    [26" claim-type="Currently amended] Bulletin board or billboard including the display of claim 1.
    [27" claim-type="Currently amended] An automobile comprising the display of claim 1.
    [28" claim-type="Currently amended] A printer comprising the display of claim 1.
    [29" claim-type="Currently amended] Telecommunications device comprising the display in paragraph 1;
    [30" claim-type="Currently amended] A telephone comprising the display of claim 1.
    类似技术:
    公开号 | 公开日 | 专利标题
    US20200266366A1|2020-08-20|Transition metal complexes comprising carbene ligands serving as emitters for organic light-emitting diodes |
    JP5902212B2|2016-04-13|Color electroluminescence display device
    US20180342685A1|2018-11-29|Organic metal complex, and organic light emitting device and display apparatus using the same
    US9508940B2|2016-11-29|OLEDs doped with phosphorescent compounds
    US8614545B2|2013-12-24|Organic EL display device having a bank formed to fill spaces between pixel electrodes
    CN1226902C|2005-11-09|Cyclometallated metal complexes as phosphorescent dopants in organic LEDs
    US6656608B1|2003-12-02|Electroluminescent material, electroluminescent element and color conversion filter
    CN101203538B|2012-08-29|New luminescent compositions and their uses
    TW432893B|2001-05-01|Multi-color luminescent device
    US5874803A|1999-02-23|Light emitting device with stack of OLEDS and phosphor downconverter
    KR100886976B1|2009-03-04|Multicolor Light Emission Apparatus and Manufacturing Method Thereof
    CN100586242C|2010-01-27|Method for luminescent layer formation and organic electroluminescent device
    US7445825B2|2008-11-04|Donor sheet having a polymerizable, amorphous matrix with electrically active material disposed therein
    US7629062B2|2009-12-08|Organic light-emitting element and display device
    CN100439469C|2008-12-03|Organometallic complexes, organic EL devices, and organic EL displays
    TW441220B|2001-06-16|Organic electroluminescence display device
    US6091195A|2000-07-18|Displays having mesa pixel configuration
    EP0743809B1|2003-10-22|Organic electroluminescent device
    US6329085B1|2001-12-11|Red-emitting organic light emitting devices |
    JP3861400B2|2006-12-20|Electroluminescent device and manufacturing method thereof
    JP4655410B2|2011-03-23|Organic electroluminescence device
    JP4411851B2|2010-02-10|Organic electroluminescence device
    CN101971386B|2012-07-04|High efficiency electroluminescent devices and methods for producing the same
    TW514592B|2002-12-21|Method of manufacturing optical element
    JP4438042B2|2010-03-24|Metal coordination compound, electroluminescent element and display device
    同族专利:
    公开号 | 公开日
    CA2275631A1|1998-07-02|
    EP0958714A4|2000-07-26|
    EP0958714A1|1999-11-24|
    US6245393B1|2001-06-12|
    US6013982A|2000-01-11|
    TW419930B|2001-01-21|
    WO1998028946A1|1998-07-02|
    US20010009691A1|2001-07-26|
    JP2001507502A|2001-06-05|
    AU5712398A|1998-07-17|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    1996-12-23|Priority to US08/772,333
    1996-12-23|Priority to US8/772,333
    1997-12-23|Application filed by 엘렌 제이. 시니스갈리, 더 트러스티즈 오브 프린스턴 유니버시티, 데니스 에프. 다우어티, 더 유니버시티 오브 서던 캘리포니아
    2000-10-25|Publication of KR20000062303A
    优先权:
    申请号 | 申请日 | 专利标题
    US08/772,333|US6013982A|1996-12-23|1996-12-23|Multicolor display devices|
    US8/772,333|1996-12-23|
    [返回顶部]