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Diamine, liquid crystal tropism agent, liquid crystal tropism film and liquid crystal display device

A technology of diamine and tetracarboxylic dianhydride, used in liquid crystal materials, chemical instruments and methods, instruments, etc., can solve problems such as narrow viewing angle, decreased brightness or contrast, and mid-tone brightness conversion.

Inactive Publication Date: 2008-02-06
JNC CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned liquid crystal display device has the following disadvantages: the viewing angle at which the image can be viewed properly is narrow; when viewing from an oblique direction, there is a decrease in brightness or contrast and a brightness conversion phenomenon of half-tone
[0013] However, in the above prior art, there is still room for research on the issues of voltage retention and residual DC

Method used

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  • Diamine, liquid crystal tropism agent, liquid crystal tropism film and liquid crystal display device
  • Diamine, liquid crystal tropism agent, liquid crystal tropism film and liquid crystal display device
  • Diamine, liquid crystal tropism agent, liquid crystal tropism film and liquid crystal display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0486] A mixture of 10g (38mmol) of 4-(4-pentylcyclohexyl)cyclohexanecarboxaldehyde, 12g (92mmol) of aniline hydrochloride and 11g (114mmol) of aniline synthesized according to the method described in JP 2002-121190 Stir at 160°C for 12 hours. After cooling, the reaction solution was poured into a 20% sodium hydroxide aqueous solution (300 ml), and extraction was performed with dichloromethane (300 ml). After the organic layer was washed twice with pure water (300 ml), anhydrous magnesium sulfate was added and dried. After the magnesium sulfate was filtered, the solvent was distilled off under reduced pressure. It was separated and purified by column chromatography (dichloromethane:methanol=20:1), and the obtained crude crystals were recrystallized from ethanol to obtain 1,1-bis(4-aminophenyl)-1-(4-(4) -Pentylcyclohexyl)cyclohexyl)methane (5HHDDM). The yield is 4.0 g, and the yield is 24%.

[0487] Melting point: 182.6-185.8°C

[0488] 1H-NM R: 0.81-1.29 (m, 21H), 1.63-1.66 (m, 9H...

Embodiment 2

[0490] Using 34 g (121 mmol) of 4-dodecylcyclohexanecarboxaldehyde synthesized according to the method described in JP 2002-121190, the reaction and post-treatment were carried out in the same manner as in Synthesis Example 1 above. It was separated and purified by column chromatography (dichloromethane:methanol=10:1), and the obtained crude crystals were recrystallized from ethanol twice to obtain 1,1-bis(4-aminophenyl)-1-(4- Dodecylcyclohexyl) methane (12HDDM). The yield is 7.8g, and the yield is 14%.

[0491] Melting point: 104.6-107.3°C

[0492] 1H-NM R: 0.86-1.26 (m, 27H), 1.58-1.66 (m, 7H), 1.92 (d, J=10.00, 1H), 2.22 (d, J=10.00, 1H), 3.60 (br.S , 4H), 6.50-6.66 (m, 4H), 7.11-7.23 (m, 4H)

Embodiment 3

[0494] Using 28 g (85 mmol) of 4-(n-hexadecyl)benzaldehyde synthesized according to the method described in JP 2002-121190 A, the reaction and post-treatment were performed in the same manner as in Synthesis Example 1 above. Separate and purify by column chromatography (toluene:methanol=10:1), and recrystallize the obtained crude crystals from ethanol twice to obtain bis(4-aminophenyl)-(4-(n-hexadecyl)benzene Base) methane (16PDDM). The yield is 17g, and the yield is 41%.

[0495] Melting point: 90.9-92.8°C

[0496] 1H-NM R; 0.88 (t, 3H, J = 6.95), 1.25-1.30 (m, 28H), 2.55 (t, 2H, J = 8.15), 3.56 (br.s, 4H), 5.30 (s, 1H) ), 6.60 (d, 4H, J = 8.30), 6.89 (d, 4H, J = 8.20), 6.94-7.26 (m, 4H)

[0497]

[0498] [Synthesis of polyamic acid]

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Abstract

The invention provides a LCD device which has a high voltage retention and an restrained residual DC. Also provided is an aligning layer for liquid crystal used for producing the LCD device, an aligning agent for liquid crystal used for producing the LCD device, a polymer included in the aligning agent for liquid crystal and a new compound used for synthesizing the polymer. The invention supposes: a diamine represented by the general formula (I), a combination including one, or two or more polymers. The combination is a polymer obtained by a reaction of the tetrahydric dianhydride and the diamine represent by the general formula (I). [in the formula (I), A1 and R1 are defined as the claim].

Description

Technical field [0001] The present invention relates to a diamine having a side chain structure, a liquid crystal aligning agent obtained by dissolving a polymer (polyamic acid or its derivative) of the diamine in a solvent, and a liquid crystal aligning film formed from the liquid crystal aligning agent的LCD device. Background technique [0002] Liquid crystal display devices are used in various liquid crystal display devices such as monitors of notebook computers or desktop computers, viewfinders of video cameras, and projection displays. Recently, liquid crystal display devices are also used in televisions. In addition, liquid crystal display devices are also used as optical printer heads, optical Fourier transform (optical fourier transform) devices, light valves, and other optoelectronic related devices. [0003] In the past, liquid crystal display devices used nematic liquid crystal display devices as the mainstream. The liquid crystal display devices that have been practica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C211/50
CPCC07C211/44C07C211/49C09K19/56G02F1/133723
Inventor 近藤史尚藤原武藤马大亮
Owner JNC CORP
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