Ink composition, organic light-emitting device using the same, and method for manufacturing the same
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- LG CHEM LTD
- Filing Date
- 2023-09-22
- Publication Date
- 2026-06-09
AI Technical Summary
【0010】 本発明に係るインク組成物は、化学式1で表されるアントラセン系化合物、化学式2で表されるベンゾエート系第1溶媒、および化学式3で表されるビフェニル系第2溶媒を含むことにより、薄膜形成時に平坦な膜を得ることができる。また、本発明に係るインク組成物を素子に適用する場合、素子の効率および寿命が向上する利点がある。
Smart Images
Figure 0007872069000253 
Figure 0007872069000001 
Figure 0007872069000002
Abstract
Claims
1. The following chemical formula: 【Chemistry 1】 An ink composition comprising: a compound selected from compounds represented by; a first solvent; a second solvent; and an additional compound represented by the following chemical formulas A, B-1, or B-2, The first solvent is ethyl 4-methylbenzoate, The second solvent is one or more selected from the group consisting of diisopropyl-1,1'-biphenyl, 3-ethylbiphenyl, triisopropyl-1,1'-biphenyl, 4-isopropylbiphenyl, and 4-butylbiphenyl. The aforementioned chemical formula A is: 【Chemistry 2】 It is a compound represented by the following: The aforementioned chemical formulas B-1 and B-2 are: 【Transformation 3】 An ink composition, which is a compound represented by [formula].
2. The ink composition according to claim 1, wherein the compound represented by chemical formula 1 is substituted with at least one deuterium.
3. The ink composition according to claim 1, wherein the boiling point of the first solvent is 180°C to 270°C.
4. The ink composition according to claim 1, wherein the boiling point of the second solvent is 240°C to 350°C.
5. The ink composition according to claim 1, wherein the second solvent comprises two or more types.
6. The ink composition according to claim 1, wherein the first solvent and the second solvent are contained in a weight ratio of 95:5 to 50:
50.
7. The ink composition according to claim 1, wherein the compound represented by chemical formula 1 and the additional compound are contained in an amount of 0.1 to 10 parts by weight based on 100 parts by weight of the ink composition.
8. It includes a first electrode; a second electrode; and one or more organic layers provided between the first electrode and the second electrode. An organic light-emitting element in which at least one of the one or more organic layers comprises the ink composition or a cured product thereof according to any one of claims 1 to 7.
9. Steps to prepare the first electrode; The step of forming one or more organic layers on the first electrode; and The step of forming a second electrode on the one or more organic layers. Includes, A method for manufacturing an organic light-emitting element, wherein the step of forming one or more organic layers includes the step of forming the organic layers using the ink composition described in any one of claims 1 to 7.