阅读说明：本技术 一种可变色智能窗 (Color-changeable intelligent window ) 是由 胡小文 谢作平 周国富 于 2019-11-19 设计创作，主要内容包括：本发明公开了一种可变色智能窗,包括相对设置的两块基板,所述基板包括依次层叠设置的透光导电基板和平行取向层,两块所述基板的平行取向层相对设置,平行取向层之间为调节区,所述调节区内填充有液晶混合物,所述液晶混合物包括双频液晶、二色性染料、普通染料和离子化合物。通过调节二色性染料与普通染料的吸收比的不同,具有彩色到无色的转换,同时使用双频液晶、二色性染料、普通染料和离子化合物,使得制得的智能窗能够实现有色透明-无色透明-有色模糊三种状态相互转变,并且能够达到颜色变化与模糊态的转换分开控制的效果,在人们建筑玻璃、车窗玻璃、装饰玻璃等具有较好的应用前景。(The invention discloses a color-changeable intelligent window which comprises two substrates which are oppositely arranged, wherein the substrates comprise a light-transmitting conductive substrate and parallel orientation layers which are sequentially stacked, the parallel orientation layers of the two substrates are oppositely arranged, an adjusting area is arranged between the parallel orientation layers, a liquid crystal mixture is filled in the adjusting area, and the liquid crystal mixture comprises dual-frequency liquid crystal, dichroic dye, common dye and ionic compound. The prepared intelligent window can realize the mutual transformation of three states of colored transparent, colorless transparent and colored fuzzy by adjusting the difference of the absorption ratios of the dichroic dye and the common dye and simultaneously using the dual-frequency liquid crystal, the dichroic dye, the common dye and the ionic compound, can achieve the effect of separately controlling the color change and the conversion of the fuzzy state, and has better application prospect in building glass, window glass, decorative glass and the like of people.)

1. The color-changeable intelligent window is characterized by comprising two substrates which are oppositely arranged, wherein the substrates comprise a light-transmitting conductive substrate and parallel orientation layers which are sequentially stacked, the parallel orientation layers of the two substrates are oppositely arranged, an adjusting area is arranged between the parallel orientation layers, a liquid crystal mixture is filled in the adjusting area, and the liquid crystal mixture comprises dual-frequency liquid crystal, dichroic dye, common dye and ionic compound.

2. The variable color smart window according to claim 1, wherein the liquid crystal mixture comprises 99.39 to 99.924 parts by mass of the dual-frequency liquid crystal, 0.05 to 0.4 part by mass of the dichroic dye, 0.025 to 0.2 part by mass of the common dye, and 0.001 to 0.01 part by mass of the ionic compound.

3. A variable colour smart window according to claim 1 or 2, characterised in that the ionic compound is a zwitterionic compound.

4. A variable colour smart window according to claim 1 or 2, characterised in that the height of the adjustment zone is 5-50 μm.

5. A variable colour smart window according to claim 1 or 2, characterised in that a thickness control glue is provided between the two substrates, the thickness control glue comprising spacers and uv-curable glue.

6. The variable color smart window according to claim 5, wherein the thickness control glue comprises 1 to 5 parts by mass of the spacer and 95 to 99 parts by mass of the ultraviolet curing glue.

7. A variable color smart window according to claim 1 or 2, wherein the variable color smart window further comprises a power supply assembly, and the two substrates are electrically connected to the power supply assembly respectively.

8. The window of claim 1 or 2, wherein the wavelength band of visible light absorption of the dichroic dye and the wavelength band of visible light absorption of the common dye are superimposed to cover the entire visible wavelength band.

Technical Field

The invention relates to the field of life of building furniture, in particular to a color-changeable intelligent window.

Background

For the transmission and the reflection of realization light, most light control glass can adopt the mode at the glass surface coating film, adopts the membrane of different materials in order to realize different reflection of light and printing opacity demand, but coated glass in case form the back, its optical property just can not carry out the light and shade and adjust, is difficult to satisfy the demand to different light environment. In addition, most of the reflective materials adopted by the coated glass are based on metal and metal oxide doped ion crystals, the reflective materials forming the glass are easy to interfere navigation and communication systems, and the coated glass is difficult to be used in building houses and life and to be popularized and widely applied in the world due to the defect. At present, the common dye-doped polymer stable liquid crystal intelligent window can realize the adjustment of light, but generally can only achieve the conversion of transparent color and transparent fuzzy state, the change of the color and the change of the fuzzy state can only be adjusted at the same time, and the adjustment effect is not flexible enough.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide the color-changeable intelligent window which is flexible in light ray adjusting effect and can realize the effect of separately controlling color change and fuzzy state change.

The technical scheme adopted by the invention is as follows:

the invention provides a color-changeable intelligent window which comprises two substrates which are oppositely arranged, wherein the substrates comprise a light-transmitting conductive substrate and parallel orientation layers which are sequentially stacked, the parallel orientation layers of the two substrates are oppositely arranged, an adjusting area is arranged between the parallel layers, a liquid crystal mixture is filled in the adjusting area, and the liquid crystal mixture comprises dual-frequency liquid crystal, dichroic dye, common dye and ionic compound.

Preferably, the common dye is a monochromatic dye or a mixture of at least two-color dyes.

Preferably, the liquid crystal mixture includes 99.39 to 99.924 parts by mass of a dual-frequency liquid crystal, 0.05 to 0.4 part by mass of a dichroic dye, 0.025 to 0.2 part by mass of a common dye, and 0.001 to 0.01 part by mass of an ionic compound.

Preferably, the ionic compound is a zwitterionic compound. The positive and negative ions of the common ionic compound are not on one molecule, and the ions are easily combined with other substances such as liquid crystal or an alignment layer, so that the ions lose activity. The positive and negative ions of the zwitterionic compound are on one molecule, so that the positive and negative ions on the molecule are not easy to lose activity at the same time, and the stability of the device can be improved by using the zwitterion, and the long-term stability is better.

Preferably, the height of the regulating region is 5-50 μm.

Preferably, a thickness control glue is arranged between the two substrates, and the thickness control glue comprises a spacer and an ultraviolet curing glue.

Further, the thickness control glue comprises 1-5 parts by mass of a spacer and 95-99 parts by mass of ultraviolet curing glue.

Preferably, the color-changeable smart window further comprises a power supply assembly, and the two substrates are electrically connected with the power supply assembly respectively.

Preferably, the wavelength band obtained by superposing the visible light absorption wavelength band of the dichroic dye and the visible light absorption wavelength band of the common dye can cover the whole visible light wavelength band. The absorption peak value of the dichroic dye and the common dye to the visible light can be controlled and superposed on the whole visible light waveband through an experimental method, specifically, the common dye and the dichroic dye with certain concentrations are selected firstly, the absorption peak positions of the common dye and the dichroic dye are tested respectively, and then the absorption peak positions are manually selected to superpose the common dye and the dichroic dye which can cover the whole visible light waveband. The above experiments can respectively obtain the absorption of a certain concentration of the two dyes, adjust the concentrations of the two dyes, mix the two dyes together, make the absorption values of the mixture as consistent as possible, and achieve the purpose of reducing the color to colorless.

The invention has the beneficial effects that:

the embodiment of the invention provides a mixed dye of a dichroic dye and a common dye for a color-variable intelligent window, which is based on the principle of a color-reducing method, and can enable the absorption wavelength band of the mixed dye to be superposed on the whole visible light wavelength band and be reduced to be colorless. Based on the above principle, when no voltage is applied, under the action of the parallel orientation layer, the dual-frequency liquid crystal molecules are arranged in parallel to the light-transmitting conductive substrate, the arrangement directions of the dichroic dye molecules are consistent with those of the dual-frequency liquid crystal molecules, ions generated by the common dye and the ionic compound are randomly arranged, the light polarization direction is parallel to the long axis of the dichroic dye molecules, the dichroic dye shows strong absorption to light, the absorption ratio of the dichroic dye to the common dye is the maximum value, and the intelligent window is in a transparent colored state; when the alternating current with voltage lower than a certain frequency is connected, the dual-frequency liquid crystal is in positive anisotropy, the dual-frequency liquid crystal molecules drive the dye molecules to be vertically arranged on the light-transmitting conductive substrate, at the moment, the long axis of the dichroic dye molecules is vertical to the polarization direction of light, the dichroic dye shows weak absorption to the light, the absorption ratio of the dichroic dye to the common dye is the minimum value, the intelligent window is colorless, ions move parallel to the dual-frequency liquid crystal molecules and the dichroic dye molecules under the alternating current electric field, the influence of the ions on the arrangement of the dual-frequency liquid crystal molecules and the dichroic dye molecules is small, and the device is still in a transparent colorless state; when the alternating current with voltage and frequency higher than a certain frequency is switched in, the double-frequency liquid crystal molecules are negative anisotropy, under the action of an electric field, the double-frequency liquid crystal molecules are arranged in parallel with the light-transmitting conductive substrate again, the motion direction of ions is vertical to the long axes of the liquid crystal molecules and the dye molecules, the arrangement of the liquid crystal molecules and the dichroic dye molecules is seriously damaged, the double-frequency liquid crystal molecules are disordered and in a scattering state to incident light, and the device is in a fuzzy colored state. Compared with the traditional adjustment mode that the dye-doped liquid crystal intelligent window can only change from colored transparent to colored fuzzy, the color-changeable intelligent window provided by the embodiment of the invention has multiple working states, can realize the mutual change of three states of colored transparent, colorless transparent and colored fuzzy, can achieve the effect of separately controlling the change of color and the conversion of fuzzy state, can balance the requirements of indoor lighting, privacy protection and color change at the same time, and has better application prospects in building glass, window glass, decorative glass and the like.

Drawings

FIG. 1 is a schematic structural diagram of a color-changeable smart window according to embodiment 1;

FIG. 2 is a schematic diagram of the color-changeable smart window in embodiment 1 when no voltage is applied;

FIG. 3 is a schematic diagram of the color-changeable smart window of example 1 accessing 30V, 50Hz AC;

FIG. 4 is a schematic diagram of the variable color smart window in example 1 accessing 30V, 50kHz AC.

Detailed Description

The concept and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments to fully understand the objects, features and effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention.