Patent 8723164

Prior art

Earlier patents, publications, and products that may anticipate or render the claims unpatentable.

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Prior art

Earlier patents, publications, and products that may anticipate or render the claims unpatentable.

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I have analyzed the provided patent text for US8723164 to identify the most relevant prior art as indicated in its "Patent Citations" and "Non-Patent Citations" sections. The priority date for US8723164 is May 30, 2008. Any reference published or filed before this date can serve as prior art under 35 U.S.C. § 102.

The independent claims of US8723164 (Claims 1, 15, 16, and method claim 13) generally describe an electronic device with an organic functional layer containing at least a first, second, and third matrix material. These materials are characterized by specific Lowest Unoccupied Molecular Orbital (LUMO) and Highest Occupied Molecular Orbital (HOMO) energy level relationships designed to improve charge carrier transport and balance. Specifically, the third matrix material has a LUMO lower than the second and first, and the second matrix material has a HOMO higher than the first and third. Claim 1 specifies this organic functional layer as an emission layer doped with at least one emitter material.

Below is an analysis of the cited prior art, including full citation, publication/filing date, a brief description (based on the title), and a potential anticipation assessment. Please note that the anticipation assessment is potential as it is based solely on the titles and general subject matter, without access to the full text of each cited reference.

Prior Art Citations for US8723164

Patent Citations

  1. Full Citation: JP2002313583A - Semiconductor Energy Lab Co Ltd, "Light emitting device"

    • Publication/Filing Date: Publication: 2002-10-25; Priority: 2000-12-28
    • Brief Description: Concerns a general light-emitting device.
    • Potential Anticipation (35 U.S.C. § 102): The title is very broad ("Light emitting device") and does not specifically disclose the use of three matrix materials with the defined HOMO/LUMO relationships for an organic functional layer. It potentially anticipates the general concept of a light-emitting device (e.g., as covered by claim 11 or 12) but not the specific matrix material composition of claims 1, 15, or 16.

  2. Full Citation: TW543342B - Semiconductor Energy Lab, "Luminescent device having an organic luminescent element"

    • Publication/Filing Date: Publication: 2003-07-21; Priority: 2000-12-28
    • Brief Description: Describes a luminescent device incorporating an organic luminescent element.
    • Potential Anticipation (35 U.S.C. § 102): Similar to JP2002313583A, this title is broad and indicates a device with an organic luminescent element. It potentially anticipates generic aspects of organic light-emitting devices (claims 11, 12) but lacks specificity regarding multiple matrix materials and their energy levels as claimed in US8723164.

  3. Full Citation: JP2002260861A - Eastman Kodak Co, "Organic light emitting devices"

    • Publication/Filing Date: Publication: 2002-09-13; Priority: 2001-01-02
    • Brief Description: Concerns organic light-emitting devices.
    • Potential Anticipation (35 U.S.C. § 102): A generic title for organic light-emitting devices. It may anticipate the general field of the invention but not the specific structural features of the matrix materials as defined in claims 1, 15, or 16.

  4. Full Citation: US20020101154A1 - Satoshi Seo, "Organic light emitting element and display device using the element"

    • Publication/Filing Date: Publication: 2002-08-01; Priority: 2001-02-01
    • Brief Description: Describes an organic light-emitting element and its use in a display device.
    • Potential Anticipation (35 U.S.C. § 102): This reference describes a fundamental component (OLED element) and its application. It potentially anticipates the broad scope of an electronic device as an OLED (claim 12), but without more detail, it's unlikely to anticipate the specific multi-matrix layer composition of claims 1, 15, or 16.

  5. Full Citation: JP2002305085A - Semiconductor Energy Lab Co Ltd, "Organic light emitting device and display device using the same"

    • Publication/Filing Date: Publication: 2002-10-18; Priority: 2001-02-01
    • Brief Description: Pertains to an organic light-emitting device and a display device utilizing it.
    • Potential Anticipation (35 U.S.C. § 102): Similar to previous broad OLED patents, it potentially anticipates the general electronic device and OLED application (claim 12) but not the specific details of the matrix materials' energy levels.

  6. Full Citation: WO2002074015A2 - The Trustees Of Princeton University, "Materials and devices for blue phosphorescence based organic light emitting diodes"

    • Publication/Filing Date: Publication: 2002-09-19; Priority: 2001-03-14
    • Brief Description: Focuses on materials and devices for blue phosphorescent organic light-emitting diodes.
    • Potential Anticipation (35 U.S.C. § 102): This title is more specific, mentioning "materials" and "blue phosphorescence based OLEDs," which relates to the emitter material aspect of US8723164. While it might describe various host materials, it's unlikely to explicitly disclose the three-matrix system with the precise HOMO/LUMO requirements for charge balance as in claims 1, 15, or 16 without further information.

  7. Full Citation: JP2004526284A - The Trustees Of Princeton University, "Materials and devices for blue phosphorescence based on organic light emitting diodes"

    • Publication/Filing Date: Publication: 2004-08-26; Priority: 2001-03-14
    • Brief Description: Japanese counterpart to WO2002074015A2, concerning materials and devices for blue phosphorescent organic light-emitting diodes.
    • Potential Anticipation (35 U.S.C. § 102): Same assessment as WO2002074015A2.

  8. Full Citation: JP2005514754A - The Trustees Of Princeton University, "White light emitting OLED derived from monomer and aggregate composite light emission"

    • Publication/Filing Date: Publication: 2005-05-19; Priority: 2001-12-28
    • Brief Description: Describes white light-emitting OLEDs using a composite light emission from monomers and aggregates.
    • Potential Anticipation (35 U.S.C. § 102): This reference is specific to white OLEDs and the emission mechanism. It may detail host materials. It potentially anticipates devices with multiple emitter types (as briefly mentioned in US8723164's description) but the title does not indicate the specific three-matrix host system with defined energy levels for charge transport as claimed.

  9. Full Citation: JP2005108726A - Sanyo Electric Co Ltd, "Organic electroluminescent device and organic compound for organic electroluminescent device"

    • Publication/Filing Date: Publication: 2005-04-21; Priority: 2003-09-30
    • Brief Description: Relates to an organic electroluminescent device and specific organic compounds for use therein.
    • Potential Anticipation (35 U.S.C. § 102): This suggests new organic compounds for OLEDs. It might disclose various host materials or charge transport materials. If it describes a combination of materials performing roles similar to the three matrix materials with the specified energy level alignment, it could potentially anticipate claims 1, 15, or 16. However, the title alone is insufficient to confirm this.

  10. Full Citation: JP2005108727A - Sanyo Electric Co Ltd, "Organic electroluminescent device"

    • Publication/Filing Date: Publication: 2005-04-21; Priority: 2003-09-30
    • Brief Description: Concerns an organic electroluminescent device.
    • Potential Anticipation (35 U.S.C. § 102): A generic OLED patent, similar to earlier broad citations.

  11. Full Citation: JP2006128636A - Fuji Photo Film Co Ltd, "Organic electroluminescence device"

    • Publication/Filing Date: Publication: 2006-05-18; Priority: 2004-09-29
    • Brief Description: Refers to an organic electroluminescence device.
    • Potential Anticipation (35 U.S.C. § 102): Another generic OLED patent.

  12. Full Citation: US20060068223A1 - Fuji Photo Film Co., Ltd., "Organic electroluminescent element"

    • Publication/Filing Date: Publication: 2006-03-30; Priority: 2004-09-29
    • Brief Description: Describes an organic electroluminescent element.
    • Potential Anticipation (35 U.S.C. § 102): Generic OLED element.

  13. Full Citation: WO2006038020A1 - Cambridge Display Technology Limited, "Light emitting device"

    • Publication/Filing Date: Publication: 2006-04-13; Priority: 2004-10-08
    • Brief Description: Concerns a general light-emitting device.
    • Potential Anticipation (35 U.S.C. § 102): Generic light-emitting device.

  14. Full Citation: JP2006165525A - Au Optronics Corp, "Phosphorescent organic light emitting device, homogeneous structure, and method for improving operation efficiency of phosphorescent organic light emitting device"

    • Publication/Filing Date: Publication: 2006-06-22; Priority: 2004-12-09
    • Brief Description: Focuses on phosphorescent OLEDs, including homogeneous structures and methods for improving efficiency.
    • Potential Anticipation (35 U.S.C. § 102): This reference is more relevant due to its focus on "improving operation efficiency" in phosphorescent OLEDs, which is a goal of US8723164 through charge carrier balance. It may disclose mixed host systems. If it teaches a host composition with three materials having similar energy level relationships for improved efficiency, it could potentially anticipate claims 1, 15, 16, and possibly 13 (method of improving efficiency).

  15. Full Citation: JP2006228936A - Fuji Photo Film Co Ltd, "Organic electroluminescence device"

    • Publication/Filing Date: Publication: 2006-08-31; Priority: 2005-02-17
    • Brief Description: Relates to an organic electroluminescence device.
    • Potential Anticipation (35 U.S.C. § 102): Generic OLED patent.

  16. Full Citation: WO2007070257A1 - Eastman Kodak Company, "Electroluminescent host material"

    • Publication/Filing Date: Publication: 2007-06-21; Priority: 2005-12-14
    • Brief Description: Focuses on an electroluminescent host material.
    • Potential Anticipation (35 U.S.C. § 102): This is highly relevant as US8723164 explicitly deals with a matrix material (which acts as a host) with specific characteristics. If this reference discloses a host material composed of multiple components, especially three with the defined energy levels for charge transport, it could potentially anticipate claims 1, 15, or 16.

  17. Full Citation: TW200746898A - Eastman Kodak Co, "Electroluminescent devices including organic EIL layer"

    • Publication/Filing Date: Publication: 2007-12-16; Priority: 2006-04-27
    • Brief Description: Describes electroluminescent devices that include an organic Electron Injection Layer (EIL).
    • Potential Anticipation (35 U.S.C. § 102): This reference focuses on EILs, which are organic functional layers mentioned in US8723164's description. If the EIL itself is described as having three matrix materials with the specified energy level properties to optimize electron injection or transport, it could potentially anticipate claims related to such functional layers (e.g., claim 7, and potentially claim 1 if the EIL is also an emission layer or if the principle is generally applicable).

  18. Full Citation: WO2007127063A2 - Eastman Kodak Company, "Electroluminescent devices including organic eil layer"

    • Publication/Filing Date: Publication: 2007-11-08; Priority: 2006-04-27
    • Brief Description: International counterpart to TW200746898A, concerning electroluminescent devices with organic EIL layers.
    • Potential Anticipation (35 U.S.C. § 102): Same assessment as TW200746898A.

  19. Full Citation: WO2008010915A2 - Eastman Kodak Company, "Light emitting device containing phosphorescent complex"

    • Publication/Filing Date: Publication: 2008-01-24; Priority: 2006-07-18
    • Brief Description: Describes a light-emitting device that includes a phosphorescent complex.
    • Potential Anticipation (35 U.S.C. § 102): This is relevant as US8723164 discusses combining phosphorescent and fluorescent emitter materials. The patent likely describes host materials suitable for phosphorescent emitters. If a multi-component host system with the specific three matrix materials and their energy level alignment is disclosed to improve phosphorescent device efficiency, it could potentially anticipate claims 1, 15, or 16.

  20. Full Citation: US20080074038A1 - Hee-Kyung Kim, "Organic light emitting display (OLED) and its method of manufacture"

    • Publication/Filing Date: Publication: 2008-03-27; Priority: 2006-09-26
    • Brief Description: Concerns an OLED and a method for its manufacture.
    • Potential Anticipation (35 U.S.C. § 102): This reference covers both an OLED device and a manufacturing method, making it potentially relevant to claims 1-12 and 13-14. If its method of manufacture involves simultaneous application of three matrix materials with defined energy levels for charge balance, it could potentially anticipate method claims 13 and 14, as well as the device claims.

  21. Full Citation: JP2010510675A - クゥアルコム・インコーポレイテッド (Qualcomm Incorporated), "Associative memory"

    • Publication/Filing Date: Publication: 2010-04-02; Priority: 2006-11-17
    • Brief Description: Describes an associative memory device.
    • Potential Anticipation (35 U.S.C. § 102): This patent appears to be an outlier. Its subject matter ("Associative memory") is completely unrelated to organic light-emitting devices, solar cells, or transistors as described in US8723164. Therefore, it is highly unlikely to anticipate any claims of US8723164. This might be a citation error or for a very tangential, non-technical reason.

  22. Full Citation: US20080116536A1 - Forrest Stephen R, "Organic hybrid planar-nanocrystalline bulk heterojunctions"

    • Publication/Filing Date: Publication: 2008-05-22; Priority: 2006-11-20
    • Brief Description: Relates to organic hybrid planar-nanocrystalline bulk heterojunctions, potentially relevant to solar cells.
    • Potential Anticipation (35 U.S.C. § 102): This patent, with its focus on "bulk heterojunctions," is highly relevant to organic solar cells, which are listed as an embodiment of the electronic device in US8723164 (claim 12). If the heterojunction layer itself functions as an organic functional layer comprising three materials with the specified HOMO/LUMO relationships for charge transport, it could potentially anticipate claims 1, 7, 12, 15, or 16 in the context of solar cells. Its publication date (2008-05-22) is very close to the priority date of US8723164 (2008-05-30), making it very strong prior art if the content is similar.

  23. Full Citation: WO2008065975A1 - Semiconductor Energy Laboratory Co., Ltd., "Light-emitting device"

    • Publication/Filing Date: Publication: 2008-06-05; Priority: 2006-11-30
    • Brief Description: Concerns a general light-emitting device.
    • Potential Anticipation (35 U.S.C. § 102): Generic light-emitting device. Its publication date is after the priority date of US8723164, but its priority date (2006-11-30) is earlier, making it valid prior art.

  24. Full Citation: US20090039294A1 - Osram Opto Semiconductors Gmbh, "Radiation emitting device"

    • Publication/Filing Date: Publication: 2009-02-12; Priority: 2007-08-07
    • Brief Description: Describes a radiation-emitting device.
    • Potential Anticipation (35 U.S.C. § 102): This patent is from the same original assignee as US8723164. Its publication date is after the priority date of US8723164, but its priority date (2007-08-07) is earlier, making it valid prior art. Given the shared assignee and similar subject matter ("Radiation emitting device"), it is highly likely to be very relevant. It could potentially anticipate claims 1, 11, or 12, and potentially the specific matrix material composition if it represents earlier work by the same entity on improving OLED efficiency.

  25. Full Citation: DE102007053396A1 - Osram Opto Semiconductors Gmbh, "Radiation-emitting device"

    • Publication/Filing Date: Publication: 2009-02-12; Priority: 2007-08-07
    • Brief Description: German counterpart to US20090039294A1, concerning a radiation-emitting device.
    • Potential Anticipation (35 U.S.C. § 102): Same assessment as US20090039294A1.

Non-Patent Citations

  1. Full Citation: Männing, Bert, "Organische p-I-n Solarzellen" (English translation of relevant pages), Dissertation; Dresden 2004.

    • Publication/Filing Date: Publication: 2004
    • Brief Description: Dissertation on organic p-i-n solar cells.
    • Potential Anticipation (35 U.S.C. § 102): Highly relevant to the solar cell embodiment (claim 12) of US8723164. If this dissertation describes intermediate layers or active layers within p-i-n solar cells that use a combination of three materials with the defined HOMO/LUMO properties to optimize charge transport, it could potentially anticipate claims 1, 7, 12, 15, or 16 in the context of solar cells.

  2. Full Citation: Miller, Allen et al., "Impurity Conduction at Low Concentrations", Physical Review, vol. 120, No. 3, Nov. 1, 1960, pp. 745-755.

    • Publication/Filing Date: Publication: 1960-11-01
    • Brief Description: A foundational physics paper on impurity conduction. US8723164 references Miller and Abraham's model for determining mobility.
    • Potential Anticipation (35 U.S.C. § 102): This reference is a fundamental scientific paper cited for its theoretical model (Miller and Abraham model for charge carrier mobility calculation). It does not anticipate any specific device claims (1, 15, 16) or method claims (13, 14) of US8723164, but rather provides underlying scientific principles used in the field.

  3. Full Citation: Schwartz, Gregor et al., "High efficiency white organic light emitting diodes combining fluorescent and phosphorescent emitter systems", Organic Optoelectronics and Photonics II, Proc. of SPIE, vol. 6192, No. 61920Q, 2006, pp. 1-6.

    • Publication/Filing Date: Publication: 2006
    • Brief Description: Research paper on high-efficiency white OLEDs combining different emitter systems.
    • Potential Anticipation (35 U.S.C. § 102): Highly relevant as US8723164 discusses multiple emission layers and combining phosphorescent and fluorescent emitters. This paper likely describes host matrices for such systems. If it discloses a host comprising three matrix materials with the specified HOMO/LUMO relationships to achieve high efficiency and charge balance, it could potentially anticipate claims 1, 15, or 16.

  4. Full Citation: Tsai, Yung-Cheng et al., "Long-lifetime, high-efficiency white organic light-emitting diodes with mixed host composing double emission layers", Applied Physics Letters, vol. 89, No. 243521, pp. 1-3.

    • Publication/Filing Date: Publication: 2006
    • Brief Description: Research paper on long-lifetime, high-efficiency white OLEDs utilizing mixed hosts in double emission layers.
    • Potential Anticipation (35 U.S.C. § 102): This reference is very relevant due to its focus on "mixed host" and "double emission layers" for achieving "long-lifetime, high-efficiency" in white OLEDs. US8723164 aims for improved charge carrier transport, balance, and efficiency, and discusses multiple emission layers. If this "mixed host" explicitly comprises three materials with the specific HOMO/LUMO energy levels and functions as described in US8723164, it could potentially anticipate claims 1, 15, or 16.

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