Patents by Inventor Lifei Cai

Lifei Cai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10026901
    Abstract: An organic light-emitting material having the structure of formula (I) or (II) as described below and an organic light-emitting device (OLED) are disclosed. The OLED adopts the compound containing fluoranthene group as the electron transport material possessing good electron transport and injection ability. The material also enhances the luminous efficiency and lifetime of the device because of its excellent thermal stability and film-forming properties. At the same time, the high triplet energy and excellent electron transport capacity of the material containing fluoranthene group make it suitable to be used as the host for phosphorescent devices, increasing the number of electrons in the light-emitting layer and the efficiency of the device.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: July 17, 2018
    Assignees: GUANGDONG AGLAIA OPTOELECTRONICS MATERIALS CO., LTD, BEIJING AGLAIA TECHNOLOGY DEVELOPMENT CO., LTD
    Inventors: Jinhai Huang, Lei Dai, Jinxin Chen, Lifei Cai
  • Publication number: 20180171218
    Abstract: This invention relates to an OLED, comprising an anode, a cathode, and an organic layer, the organic layer at least contains one or more layers containing light emitting layer from the hole injection layer, hole transport layer, electron injection layer, electron transport layer, light emitting layer; the light emitting layer is composed of a single compound with the structure of formula (I). The OLED can emit blue light and has the advantages of high light emitting efficiency, excellent color purity and long lifetime.
    Type: Application
    Filed: September 1, 2015
    Publication date: June 21, 2018
    Applicants: GUANGDONG AGLAIA OPTOELECTRONIC MATERIALS CO., LTD ., BEIJING AGLAIA TECHNOLOGY DEVELOPMENT CO., LTD.
    Inventors: Kam-Hung LOW, Zhe LI, Jinxin CHEN, Lifei CAI
  • Patent number: 9905774
    Abstract: The present invention discloses an “organic electronic material”, belonging to the organic light-emitting device (OLED) display materials field. The organic electronic material in the present invention has a structural formula (I). The OLED made by this kind of organic light-emitting material has the advantages of excellent light-emitting efficiency, excellent color purity and long service lifetime.
    Type: Grant
    Filed: May 26, 2013
    Date of Patent: February 27, 2018
    Assignees: GUANGDONG AGLAIA OPTOELECTRONIC MATERIALS CO., LTD, BEIJING AGLAIA TECHNOLOGY DEVELOPMENT CO., LTD
    Inventors: Lei Dai, Jinhai Huang, Jinxin Chen, Lifei Cai
  • Publication number: 20180047909
    Abstract: The present invention discloses an “organic electronic material”, belonging to the organic light-emitting device (OLED) display materials field. The organic electronic material in the present invention has a structural formula (I), having good thermal stability, high luminous efficiency, high purity of light emission. The OLED made by this kind of organic light-emitting material has the advantages of excellent organic light-emitting efficiency, excellent color purity and long service life.
    Type: Application
    Filed: September 1, 2015
    Publication date: February 15, 2018
    Applicants: GUANGDONG AGLAIA OPTOELECTRONIC MATERIALS CO., LTD ., BEIJING AGLAIA TECHNOLOGY DEVELOPMENT CO.,LTD.
    Inventors: Kam-Hung LOW, Zhe LI, Jinxin CHEN, Lifei CAI
  • Publication number: 20180047910
    Abstract: This invention relates to an OLED, comprising an anode, a cathode, and an organic layer, the organic layer at least contains one or more layers containing light emitting layer from the hole injection layer, hole transport layer, electron injection layer, electron transport layer, light emitting layer; the light emitting layer is a host guest doping system composed of host materials and guest materials. The light-emitting zone of the light emitting layer is blue 440-490 nm, and the host material or guest material has a structure with the formula (I). The OLED has the advantages of excellent light emitting efficiency, excellent color purity and long lifetime.
    Type: Application
    Filed: September 1, 2015
    Publication date: February 15, 2018
    Applicants: GUANGDONG AGLAIA OPTOELECTRONIC MATERIALS CO., LTD ., BEIJING AGLAIA TECHNOLOGY DEVELOPMENT CO., LTD.
    Inventors: Kam-Hung LOW, Zhe LI, Jinxin CHEN, Lifei CAI
  • Patent number: 9871202
    Abstract: The present invention discloses an “organic light-emitting device (OLED)”, comprising an anode, a cathode, and one or more organic layers, wherein the said organic layer contains at least one compound having the formula (I), and the said OLED has the advantages of excellent light-emitting efficiency, excellent color purity and long lifetime.
    Type: Grant
    Filed: May 26, 2013
    Date of Patent: January 16, 2018
    Assignees: GUANGDONG AGLAIA OPTOELECTRONIC MATERIALS CO., LTD, BEIJING AGLAIA TECHNOLOGY DEVELOPMENT CO., LTD.
    Inventors: Lei Dai, Jinhai Huang, Jinxin Chen, Lifei Cai
  • Patent number: 9831449
    Abstract: The present invention relates to light-emitting materials for light-emitting diodes. The structure for the light-emitting materials is shown in Formula I. The platinum (II) complexes of the present invention show high emission quantum efficiency, good thermal stability and low quenching constant, thus can be used for producing red light OLED with high efficiency and low efficiency attenuation.
    Type: Grant
    Filed: March 16, 2015
    Date of Patent: November 28, 2017
    Assignee: GUANGDONG AGLAIA OPTOELECTRONIC MATERIALS CO., LTD.
    Inventors: Chiming Che, Lifei Cai
  • Patent number: 9745477
    Abstract: Provided is a method for uniform dispersion of single-wall carbon nanotubes, comprising: (1) dispersing single-wall carbon nanotube powder in a low-boiling point alcohol or water or DMF, then placing into a UV bench for ultraviolet irradiation and oxidation; (2) after cleaning the carbon nanotubes in the UV bench, using a strong acid to carry out an oxidation reaction, then washing by centrifugation; (3) after cleaning with strong acid, subjecting the single-wall carbon nanotubes to ethanol or water ultrasonic dispersion 2-3 times, washing by centrifugation, then dissolving in low-boiling point alcohol or water or DMF solution to obtain a single-wall carbon nanotube dispersion. By means of the present method, the entire surface of a carbon nanotube is grafted with a functionalized group, achieving solubility of single-wall carbon nanotubes; further, high-performance carbon nanotube composite flexible transparent electrode materials can be prepared, which have high transmittance and low sheet resistance.
    Type: Grant
    Filed: November 28, 2014
    Date of Patent: August 29, 2017
    Assignees: BEIJING AGLAIA TECHNOLOGY DEVELOPMENT CO., LTD., GUANGDONG AGLAIA OPTOELECTRONIC MATERIALS CO., LTD.
    Inventors: Haiyan Hao, Xiliang Cao, Lei Dai, Lifei Cai
  • Patent number: 9738795
    Abstract: Provided is a method for improving single-wall carbon nanotube dispersion, comprising the following steps: (1) using ultrasonic waves to disperse single-wall carbon nanotube powder in a lipid solvent, and allowing to stand for 2-3 days for swelling and centrifuging; (2) successively washing by centrifugation with low-boiling point alcohol solvent and water, then drying; (3) adding the dried single-wall carbon nanotubes to a strongly oxidative acid solution for oxidation, and centrifuging; (4) washing by centrifugation with water to a centrate of pH7, then dissolving the single-wall carbon nanotubes in water or alcohol solvent. Upon processing by the described method, recovery of single-wall carbon nanotubes is around 80% or higher, and the single-wall carbon nanotube solution is highly concentrated; the absorbance value of the carbon nanotube dispersion can be reduced to approximately 1600, and the invention can be used for preparation of flexible transparent electrode materials.
    Type: Grant
    Filed: November 28, 2014
    Date of Patent: August 22, 2017
    Assignees: BEIJING AGLAIA TECHNOLOGY DEVELOPMENT CO., LTD., GUANGDONG AGLAIA OPTOELECTRONIC MATERIALS CO., LTD.
    Inventors: Haiyan Hao, Xiliang Cao, Lei Dai, Lifei Cai
  • Patent number: 9738627
    Abstract: The present invention relates to “a method for synthesizing 2,6-bis[3?-(N-carbazolyl)phenyl]pyridine compound”, and belongs to the field of chemical synthesis. In the present invention, a pyridine ring is formed by cyclization, the intermediate product can be directly used in the next reaction without purification and thus the process is very easy; the final product I will precipitate from the mixed reaction solution after the completion of the reaction, and the product can be very conveniently extracted.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: August 22, 2017
    Assignees: BEIJING AGLAIA TECHNOLOGY DEVELOPMENT CO., LTD., GUANGDONG AGLAIA OPTOELECTRONIC MATERIALS CO., LTD.
    Inventors: Kam-hung Low, Lifei Cai
  • Publication number: 20170162803
    Abstract: The present invention relates to light-emitting materials for light-emitting diodes. The structure for the light-emitting materials is shown in Formula I. The platinum (II) complexes of the present invention show high emission quantum efficiency, good thermal stability and low quenching constant, thus can be used for producing red light OLED with high efficiency and low efficiency attenuation.
    Type: Application
    Filed: March 16, 2015
    Publication date: June 8, 2017
    Applicant: GUANGDONG AGLAIA OPTOELECTRONIC MATERIALS CO., LTD.
    Inventors: Chiming CHE, Lifei CAI
  • Patent number: 9647215
    Abstract: The present invention also relates to an organic electronic material with the structure of formula (I). It is a kind of hole transport and injection material with good thermal stability, high hole mobility and excellent solubility. The OLEDs prepared thereof have the advantages such as good light emitting efficiency, excellent color purity and long lifetime.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: May 9, 2017
    Assignees: GUANGDONG AGLAIA OPTOELECTRONIC MATERIALS CO., LTD., BEIJING AGLAIA TECHNOLOGY DEVELOPMENT CO., LTD.
    Inventors: Jinhai Huang, Lifei Cai, Lei Dai, Kam-Hung Low
  • Publication number: 20170029634
    Abstract: Provided is a method for uniform dispersion of single-wall carbon nanotubes, comprising: (1) dispersing single-wall carbon nanotube powder in a low-boiling point alcohol or water or DMF, then placing into a UV bench for ultraviolet irradiation and oxidation; (2) after cleaning the carbon nanotubes in the UV bench, using a strong acid to carry out an oxidation reaction, then washing by centrifugation; (3) after cleaning with strong acid, subjecting the single-wall carbon nanotubes to ethanol or water ultrasonic dispersion 2-3 times, washing by centrifugation, then dissolving in low-boiling point alcohol or water or DMF solution to obtain a single-wall carbon nanotube dispersion. By means of the present method, the entire surface of a carbon nanotube is grafted with a functionalized group, achieving solubility of single-wall carbon nanotubes; further, high-performance carbon nanotube composite flexible transparent electrode materials can be prepared, which have high transmittance and low sheet resistance.
    Type: Application
    Filed: November 28, 2014
    Publication date: February 2, 2017
    Applicants: BEIJING AGLAIA TECHNOLOGY DEVELOPMENT CO.,LTD., GUANGDONG AGLAIA OPTOELECTRONIC MATERIALS CO., LTD .
    Inventors: Haiyan HAO, Xiliang CAO, Lei DAI, Lifei CAI
  • Publication number: 20170029633
    Abstract: Provided is a method for improving single-wall carbon nanotube dispersion, comprising the following steps: (1) using ultrasonic waves to disperse single-wall carbon nanotube powder in a lipid solvent, and allowing to stand for 2-3 days for swelling and centrifuging; (2) successively washing by centrifugation with low-boiling point alcohol solvent and water, then drying; (3) adding the dried single-wall carbon nanotubes to a strongly oxidative acid solution for oxidation, and centrifuging; (4) washing by centrifugation with water to a centrate of pH7, then dissolving the single-wall carbon nanotubes in water or alcohol solvent. Upon processing by the described method, recovery of single-wall carbon nanotubes is around 80% or higher, and the single-wall carbon nanotube solution is highly concentrated; the absorbance value of the carbon nanotube dispersion can be reduced to approximately 1600, and the invention can be used for preparation of flexible transparent electrode materials.
    Type: Application
    Filed: November 28, 2014
    Publication date: February 2, 2017
    Applicants: BEIJING AGLAIA TECHNOLOGY DEVELOPMENT CO.,LTD., GUANGDONG AGLAIA OPTOELECTRONIC MATERIALS CO., LTD.
    Inventors: Haiyan HAO, Xiliang CAO, Lei DAI, Lifei CAI
  • Publication number: 20170029646
    Abstract: A high-dispersion carbon nanotube composite conductive ink, consisting of modified carbon nanotubes, conductive polymeric material, and solvent; said modified carbon nanotubes being obtained from conventional carbon nanotubes that have been irradiated on a UV bench and then oxidized by a strong acid. Carbon nanotubes obtained via this process do not require, when preparing conductive composite ink, the addition of a surfactant to increase the dispersibility of the ink, such that the conductive layer obtained therefrom has good conductive properties, optical transmittance within the visible light range, and flexibility. The conductive properties of this flexible carbon nanotube polymeric transparent conductive film are world class, and the invention has good prospects for application.
    Type: Application
    Filed: November 28, 2014
    Publication date: February 2, 2017
    Applicants: BEIJING AGLAIA TECHNOLOGY DEVELOPMENT CO.,LTD., GUANGDONG AGLAIA OPTOELECTRONIC MATERIALS CO., LTD.
    Inventors: Haiyan HAO, Xiliang CAO, Lei DAI, Lifei CAI
  • Publication number: 20160311799
    Abstract: The present invention relates to “a method for synthesizing 2,6-bis[3?-(N-carbazolyl)phenyl]pyridine compound”, and belongs to the field of chemical synthesis. In the present invention, a pyridine ring is formed by cyclization, the intermediate product can be directly used in the next reaction without purification and thus the process is very easy; the final product I will precipitate from the mixed reaction solution after the completion of the reaction, and the product can be very conveniently extracted.
    Type: Application
    Filed: December 16, 2014
    Publication date: October 27, 2016
    Applicants: BEIJING AGLAIA TECHNOLOGY DEVELOPMENT CO., LTD., GUANGDONG AGLAIA OPTOELECTRONIC MATERIALS CO., LTD.
    Inventors: Kam-hung LOW, Lifei CAI
  • Publication number: 20160280947
    Abstract: A transparent carbon nano-tube (CNT) polymer compound conductive inks and preparation methods thereof. The conductive ink includes modified CNT, conductive polymer, water-soluble polymer cosolvent, polymer modification additive, surfactant and deionized water. Preparation is performed to realize uniform dispersion of CNT and conductive polymer solution and the obtained ink has good stability and re-dispersibility. The CNT polymer compound conductive ink and methods can be used for preparing fine electrode patterns under room temperature by adopting such devices as spin coating and ink jet printing. Photoresist conductive ink can be prepared to realize one-off preparation of electrode patterns with fine structures. The ink can be applied for very transparent electrode materials in such devices as flexible OLED displays, solar cells, liquid crystal displays and panels of touch screens.
    Type: Application
    Filed: February 27, 2014
    Publication date: September 29, 2016
    Inventors: Haiyan Hao, Lei Dai, Lifei Cai
  • Publication number: 20160260907
    Abstract: An “organic electroluminescent material and organic electroluminescent device (OED)” with the structure as formula (I) is disclosed herein. The OED possesses high electronic transmission and injection capacity by using the compound having an acenaphtho[1,2-c]pyridine (ANP) group as electronic transport material. It also enhances luminous efficiency and lifetime of the device because of its excellent thermal stability and film-forming properties. At the same time, the OED possesses high triplet energy level and excellent electronic transport capacity by using the compound having the ANP group as the main body of phosphorescence material. It enhances the number of electrons in light-emitting layer and the efficiency of the device effectively.
    Type: Application
    Filed: November 3, 2014
    Publication date: September 8, 2016
    Applicants: BEIJING AGLAIA TECHNOLOGY DEVELOPMENT CO., LTD., GUANGDONG AGLAIA OPTOELECTRONIC MATERIALS CO., LTD .
    Inventors: Kam-hung Low, Lei Dai, Jinxin Chen, Lifei Cai
  • Publication number: 20160111652
    Abstract: The OLED in the present invention comprises an anode, a cathode, and one or multiple organic layers, and the organic layer at least contains one kind of material with the following chemical formula I. The OLEDs made by this organic light emitting material have advantages such as good light emitting efficiency, excellent color purity and long lifetime.
    Type: Application
    Filed: April 25, 2014
    Publication date: April 21, 2016
    Applicants: Guangdong Aglaia Optoelectronic Materials Co., Ltd, Beijing Aglaia Technology Development Co., Ltd.
    Inventors: Jinhai HUANG, Lifei CAI, Lei DAI, Kam-Hung LOW
  • Publication number: 20160087222
    Abstract: The present invention also relates to an organic electronic material with the structure of formula (I). It is a kind of hole transport and injection material with good thermal stability, high hole mobility and excellent solubility. The OLEDs prepared thereof have the advantages such as good light emitting efficiency, excellent color purity and long lifetime.
    Type: Application
    Filed: April 25, 2014
    Publication date: March 24, 2016
    Inventors: Jinhai HUANG, Lifei CAI, Lei DAI, Kam-Hung LOW