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A dimming device comprising a guest-host liquid crystal composition

A technology of liquid crystal composition and liquid crystal compound, which is applied in liquid crystal materials, instruments, optics, etc., can solve problems such as energy consumption, and achieve the effect of solving energy consumption and reducing costs

Active Publication Date: 2021-03-16
JIANGSU HECHENG DISPLAY TECHCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The guest-host liquid crystal composition is used for dimming, the use of polarizers is abandoned, and no electric drive is required, which fundamentally solves the problem of energy consumption

Method used

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  • A dimming device comprising a guest-host liquid crystal composition
  • A dimming device comprising a guest-host liquid crystal composition
  • A dimming device comprising a guest-host liquid crystal composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0118] The parent liquid crystal 1 of Example 1 was formulated in accordance with the respective compounds and weight percentages listed in Table 3, which filled between the two substrates of the liquid crystal display, and the test data as shown in the table:

[0119] Table 3 Composition and ratio of parent liquid crystal

[0120]

[0121] To the parent liquid crystal 1, a 0.35% dye 13 + 0.15% dye 7 + 1% dye 25 formed a guest liquid crystal composition A1, and 0.7% dye 13 + 0.3% dye 7 + 2% dye 25 formed a guest primary liquid crystal composition B1, The host liquid crystal composition is filled with the dimming device of the present invention, which has a bright and dark change by regulating the ambient temperature of the device, and the transmission rate change is shown in Table 4:

[0122] Table 4

[0123] Transmission rate changes (Ming → dark) Binary LCD Composition A1 65％→40％ Binary LCD Composition B1 38％→18％

[0124] As can be seen from Table 4...

Embodiment 2

[0126] The parent liquid crystal 2 of Example 2 is formulated in accordance with the various compounds and weight percentages listed in Table 5, which filled between the liquid crystal display two substrates, and the test data is shown in the following table:

[0127] Table 5 Master Liquid Crystal Composition and Ratio

[0128]

[0129] To the parent liquid crystal 2, a 0.35% dye 13 + 0.15% dye 7 + 1% dye 25 formed a guest liquid crystal composition A2, and 0.7% dye 13 + 0.3% dye 7 + 2% dye 25 formed a guest primary liquid crystal composition B2, Its transmittance change is shown in Table 6:

[0130] Table 6

[0131] Transmission rate changes (Ming → dark) Binary LCD composition A2 59％→38％ Bential LCD composition B2 39％→18％

[0132] As can be seen from Table 6, the dimming device of the present invention is in a bright state when the ambient temperature is less than 25 ° C; when the device ambient temperature is higher than 25 ° C, the device is in a ...

Embodiment 3

[0134] The parent liquid crystal 3 of Example 3 is formulated in accordance with the respective compounds and weight percentages listed in Table 7, which filled between the two substrates of the liquid crystal display, and the test data is shown in the table below:

[0135] Table 7 Composition and ratio of maternal liquid crystal

[0136]

[0137] To the parent liquid crystal 3, a 0.35% dye 13 + 0.15% dye 7 + 1% dye 25 forms a guest primary liquid crystal composition A3, and the transmittance change is shown in Table 8:

[0138] Table 8

[0139] Transmission rate changes (Ming → dark) Binary LCD composition A3 41％→16％

[0140] As can be seen from Table 8, the dimming device according to the present invention is in a bright state when the ambient temperature is below 50 ° C; when the device ambient temperature is higher than 50 ° C, the device is in a dark state, and is in a darkness. The band is all absorbed.

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Abstract

The present invention provides a dimming device comprising a guest-host liquid crystal composition. The dimming device comprises: an upper substrate, a lower substrate, an upper alignment layer, a lower alignment direction, and a guest-host liquid crystal composition interposed between the upper alignment layer and the lower alignment layer, wherein the guest-host liquid crystal composition comprises a dichroic dye and a matrix liquid crystal. Using the guest-host liquid crystal composition to carry out a dimming operation without using polarizers and requiring no electrodes would resolve, fundamentally, the issue of energy consumption. Also, since no polarizer is used and no electrode is required, the cost can also be greatly reduced.

Description

Technical field [0001] The present invention relates to a dimming device, in particular, to a dimming device comprising a guest liquid crystal composition. Background technique [0002] In the prior art, the dimming glass market is hot, and there are more and more types of dimming glass, widely used in automotive glass, architectural decoration, outdoor wall and other fields. [0003] The dimming glass is an electrochromic dimming glass that controls the state of the functional material in the polyester film or the laminated function by safe low voltage, and thereby achieving discoloration dimming purposes. The color of this electrochromic dimming glass can be controlled by changing the current, thereby adjusting the strength of the sun in the chamber. When a voltage is applied to the electrochromic dimming glass, the electrochromic material is colored, and when the voltage is removed, the dimming glass returns to the mist-shaped prototyping state, that is, the dimming glass is m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1334C09K19/44C09K19/46C09K19/42
CPCC09K19/3001C09K19/44C09K19/46G02F1/1334
Inventor 王莉杨亚非丁文全韩文明贺笛
Owner JIANGSU HECHENG DISPLAY TECHCO
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