Abstract:
The present invention relates to a compound for an organic optoelectronic device, an organic light emitting diode including the same, and a display including the organic light emitting diode. The present invention enables the manufacture of an organic light emitting diode having an improved lifespan due to improved electrochemical and thermal stability and provides high luminous efficiency at low driving voltage by providing a compound for an organic optoelectronic device represented by chemical formula 1.
Abstract:
PURPOSE: A liquid crystal alignment agent is provided to improve transmittance, response rate, liquid crystal orientation, and electro-optical characteristic. CONSTITUTION: A liquid crystal alignment agent comprises 1-25 wt% of a polymer selected from polyamic acids, polyimides, and combinations thereof; 0.01-10 wt% of a photopolymerization initator; and residual solvent. The photopolymerization initiator is selected from oxime, benzophenone, triazine, acetophenone, thioxanthone, benzoin, carbazole, diketone, sulfonium borate, diazo, and biimidazole-based compound, and combinations thereof.
Abstract:
액정 광배향제 및 이를 이용하여 제조된 액정 광배향막을 제공하며, 상기 액정 광배향제는 하기 화학식 1로 표시되는 에폭시 화합물; 및 폴리아믹산, 폴리이미드 및 이들의 조합으로 이루어진 군으로부터 선택되는 폴리머를 포함한다. [화학식 1]
상기 화학식 1에서, X 및 R 1 은 명세서에 정의된 바와 같다. 본 발명의 일 구현예에 따른 액정 광배향제는 기판에 대한 인쇄성이 우수하고, 신뢰성 및 전기 광학적 특성 면에서 우수한 액정 광배향막을 제조할 수 있다. 액정 광배향막, 액정 광배향제, 첨가제, 에폭시, 폴리아믹산, 폴리이미드, 광배향제, 잔상, 선경사각, 전압보전율, 도막 균일성, 인쇄성
Abstract:
PURPOSE: A liquid crystal alignment agent is provided to improve printability, liquid crystal alignment, and electrooptical characteristic, to control a pretilt angle, and to enable the production of a vertical alignment mode liquid crystal alignment film and a twisted nematic mode liquid crystal alignment film. CONSTITUTION: A liquid crystal alignment agent comprises a polymer selected from the group consisting of polyamic acids, polyimides, and combinations thereof. The polyamic acid comprises a repeating unit represented by chemical formula 1. The polyimide comprises a repeating unit represented by chemical formula 2. In chemical formulas 1 and 2, X1 and X2 are the same and different and represent tetravalent organic groups induced from cycloaliphatic acid dianhydrides or aromatic acid dianhydrides; and Y1 and Y2 are the same and different and represent divalent organic groups induced from diamines. The diamine includes functional diamines represented by represented by chemical formula 3.
Abstract:
PURPOSE: An epoxy compound for a liquid crystal alignment agent is provided to be manufactured using a simple process, to obtain excellent printability to a substrate, and to offer a liquid crystal alignment agent and a liquid crystal alignment film having superior reliability and electro-optical properties. CONSTITUTION: An epoxy compound for a liquid crystal alignment agent is marked as a chemical formula 1. In the chemical formula 1, R1 and R2 are selected from a group comprising a hydrogen atom or alkyl groups. In the chemical formula 1, R3, R4, and R5 are selected from the hydrogen atom, halogen, and an alkyl group. The epoxy compound includes polyamic acid, a polyimide polymer, or a mixed polymer.
Abstract:
PURPOSE: A liquid crystal alignment agent is provided to improve permeability and response speed, to have excellent electrical characteristics such as a voltage holding ratio and residual DC, and to easily control pretilt angle. CONSTITUTION: A liquid crystal alignment agent comprises 'polyamic acids with a repeating unit indicated as a chemical formula 1', 'polyimides with a repeating unit indicated as a chemical formula 2, and polymers selected from the group consisting of their combinations. In this, X^1 and X^2 are 'tetravalent organic radicals respectively and independently induced from alicyclic acid dianhydrides or aromatic acid dianhydrides', Y^1 and Y^2 are 'divalent organic radicals respectively and independently induced from diamines', and the diamines contains 'a diamine capable of cross-linking indicated as the chemical formula 3'.
Abstract:
PURPOSE: A liquid crystal alignment agent is provided to improve transmittance, response rate, liquid crystal alignment, and electro-optical performance and to facilitate the control of a pretilt angle. CONSTITUTION: A liquid crystal alignment agent comprises polyamic acid which includes a polymer which includes a structure unit represented by chemical formula 1, a polyimide represented by chemical formula 2, and a combination thereof. The weight average molecular weights of the polyamic acid and the polyimide are 10,000-500,000. The liquid crystal alignment agent comprises the polyamic acid and polyimide with a mixing ratio of 1:99-50:50. The liquid crystal alignment agent has a solid phase of 1-25 weight%. A liquid crystal film is manufactured by spreading the liquid crystal alignment agent on a substrate.
Abstract:
PURPOSE: A liquid crystal alignment agent is provided to improve response rate and transmittance, to improve electric performance and to easily control a pretilt angle. CONSTITUTION: A liquid crystal alignment agent comprises a polyamic acid which comprises a repeating unit represented by chemical formula 1, a polyimide which comprises a repeating unit indicated in chemical formula 2, and a polymer selected from combinations thereof. In chemical formula 1 and 2, each of X^1 and X^2 is independently quadrivalent organic groups derived from alicyclic dianhydride or aromatic dianhydride, and each of Y^1 and Y^2 is a divalent organic group derived from a diamine. The polyamic acid and polyimide has a weight average molecular weight of 10,000-300,000 g/mol.
Abstract:
PURPOSE: A liquid crystal aligning agent, liquid crystal aligning film manufactured by using the same, liquid crystal display device including the liquid crystal aligning film are provided to improve transmittance, response speed, liquid crystal alignment, and electro-optical characteristics. CONSTITUTION: A liquid crystal aligning agent comprises a first polymer and a second polymer. The first polymer comprises polyamic aid including recurring unit which is represented by chemical formula 1, polyimide including recurring unit which is represented by chemical formula 2, or a combination thereof. The second polymer comprises polyamic acid including recurring unit which is represented by chemical formula 4, polyimide including recurring unit which is represented by chemical formula 5, and a combination thereof. In the chemical formula 1 and 2, X1 and X2 are identical or different from each other and are respectively tetravalent organic groups which are driven from cycloaliphatic anhydride or aromatic acid dianhydride. Y1 and Y2 are identical or different from each other and respectively comprise divalent organic group which is driven from diamine represented by chemical formula 3. In the chemical formula 4 and 5, X3 and X4 are identical or different from each other and are respectively tetra organic groups which are driven from cycloaliphatic anhydride or aromatic acid dianhydride. Y3 and Y4 are identical or different from each other and divalent organic groups which are driven from diamine.