Graphene transparent conductive film and method for manufacturing the same
AssigneeShenzhen China Star Optoelectronics Technology Co., Ltd.
InventorSong Lan
Life of this patent
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Abstract
A graphene transparent conductive film is disclosed. The graphene transparent conductive film includes graphene and a vertical alignment agent. A method for manufacturing the graphene transparent conductive film is further disclosed. In the method, graphene, a surfactant, and water are mixed to obtain a graphene solution; a vertical alignment agent is added to the graphene solution to obtain a graphene transparent conductive film liquid, and the film liquid is coated on a substrate and heated to obtain the graphene transparent conductive film. The vertical alignment agent can reduce a surface energy of liquid crystal molecules in a polymer matrix, increase a contact angle, so that the liquid crystal molecules can be aligned vertically.
Claims17
A graphene transparent conductive film, comprising graphene and a vertical alignment agent, wherein a general structural formula of the vertical alignment agent is R—SP-Qn,
- wherein Q is a sulfonic acid group, and n is an integer in a range from 1 to 3;
- wherein SP is a linking group, and a general structural formula thereof is —(CH2)m—, in which m is an integer in a range from 1 to 5, and one or more —CH2— group(s) can be optionally substituted by a group selected from phenylene, aromatic condensed ring base, cycloalkylene, —O—, —S—, —CO—, —COO—, —OCO—, —OCOO—, —OCH2—, —CH2O—, —CH═CH—, —CF═CF—, —C≡C—, —CH═CH—COO—, and —OCO—CH═CH—;
- and
- wherein R is selected from substituted or unsubstituted C3-20 linear or branched alkyl, in which one or more CH2 group(s) can be optionally substituted by a group selected from —O—, —CONH—, —COO—, —OCO—, —CO—, and —CH═CH—, and one or more H atom(s) can be optionally substituted by F atom(s) or Cl atom(s).
A method for manufacturing a graphene transparent conductive film, comprising steps of:
- S1, mixing graphene, a surfactant, and water so as to obtain a graphene solution;
- S2, adding a vertical alignment agent and PEDOT-PSS to the graphene solution so as to obtain a graphene transparent conductive film liquid;
- and
- S3, coating the graphene transparent conductive film liquid on a substrate, and removing water from the film liquid so as to obtain the graphene transparent conductive film.
A liquid crystal display device, comprising a first substrate, a second substrate, and a liquid crystal material arranged between the first substrate and the second substrate, wherein a graphene transparent conductive film is coated on the first substrate and the second substrate, and the graphene transparent conductive film comprises graphene and a vertical alignment agent,
- wherein a general structural formula of the vertical alignment agent is R—SP-Qn,
- wherein Q is a sulfonic acid group, and n is an integer in a range from 1 to 3;
- wherein Sp is a linking group, and a general structural formula thereof is —(CH2)m—, in which m is an integer in a range from 1 to 5, and one or more —CH2— group(s) can be optionally substituted by a group selected from phenylene, aromatic condensed ring base, cycloalkylene, —O—, —S—, —CO—, —COO—, —OCO—, —OCOO—, —OCH2—, —CH2O—, —CH═CH—, —CF═CF—, —C≡C—, —CH═CH—COO—, and —OCO—CH═CH—;
- and
- wherein R is selected from substituted or unsubstituted C3-20 linear or branched alkyl, in which one or more CH2 group(s) can be optionally substituted by a group selected from —O—, —CONH—, —COO—, —OCO—, —CO—, and —CH═CH—, and one or more H atom(s) can be optionally substituted by F atom(s) or Cl atom(s).
Dependencies are inferred from the claim text.