TWI607802B - Microencapsulated liquid crystal and its microcapsule liquid crystal display device - Google Patents

Description

Microcapsule liquid crystal and microcapsule liquid crystal display device thereof

The present invention relates to the field of display technologies, and in particular, to a microcapsule liquid crystal and a microcapsule liquid crystal display device including the conductive material to realize black and white or color display.

Whether it is a CRT that is on the verge of disappearing, or a mainstream LCD today, it is essentially a traditional rigid display. Compared with ordinary rigid displays, flexible displays have many advantages: impact resistance, stronger shock resistance; light weight, small size, and more convenient carrying; using a tape-and-reel process similar to the newspaper printing process, the cost is lower. At present, the main flexible display materials can be roughly divided into three types: electronic paper (or flexible electrophoretic display), flexible OLED and flexible liquid crystal, among which electronic paper is the most widely used.

Flexible display expected mass market applications include alternative papers in newspapers, books and magazines, point-of-sale (POS) terminals, indoor and outdoor signage, smart cards, and retail shelf labels. This technology has a particularly strong potential in the automotive market, involving windshields, dashboards, bumper tags, interior trim, GPS and other infotainment features. As wearable electronic devices become more and more sought after, the demand for flexible display screens will further expand, and the commercialization of flexible display screens will move forward step by step.

The flexible display provides a versatile form factor and design, while the thin, shock-resistant features are suitable for portable products such as mobile phones, PDAs or notebook computers. In addition, another important factor in the development of flexible displays is that the process may be converted from Sheet-fed Batch Processing to Roll-to-Roll Manufacturing, meaning that the manufacturing cost of the display can be significantly reduced. Combining the similarities in paper properties with mechanical properties and the ability to update information on digital electronic media, coupled with manufacturing cost advantages, flexible displays are highly likely to replace current flat-panel displays and to capture business opportunities in emerging markets.

Flexible displays based on bistable electronic paper technology are more practical and feasible development directions. Bistability is a stable "memory effect" that allows images (data) to remain in the absence of an applied voltage. Conventional displays, whether or not they use a backlight, require a power supply to update the picture and stabilize the picture, so the power consumed is too large. The electronic paper with bistable characteristics, when an image is written into the electronic paper, does not need to input additional power, the image will be retained all the time, only need to input additional power when the image is switched, so it can save power Energy saving. Moreover, electronic paper uses external light for display, which is more energy efficient than an active light emitting display or an LCD using a backlight.

One of the reasons why flexible displays are not yet fully available is that the specialized components that make up the flexible system are not yet fully available. The development of flexible displays involves topics such as material development, process improvement, process equipment modification, new display mode development, and yield control. The bistable electronic paper technology involves topics such as bistable material development and process improvement.

For example, in the patent CN85104765A applied for in 1985, it was first proposed. The liquid crystal emulsion rapid microcapsule method is mainly characterized in that two kinds of wall materials are used to encapsulate the liquid crystal in two layers; in the process of production, the inner and outer wall materials, alcohol and water of the liquid crystal core material capsule are mutually dissolved and insoluble at a certain ratio. The mixture is emulsified while the emulsification process is carried out by a warm curing method. The use of the present invention for producing liquid crystal microcapsules provides advantageous conditions for the color-changing liquid crystal having significant temperature and optical properties to further expand the range of application thereof.

The bistable electronic paper technology mainly includes two types of particle moving electronic paper technology and bistable liquid crystal display technology. The mainstream of particle-moving electronic paper technology is microcapsule electrophoretic display technology, but the moving speed of particles in microcapsules is slow, which affects the page turning speed of electronic paper based on microcapsule electrophoresis display technology. The liquid crystal molecules are smaller than the particles in the microcapsules and can rotate rapidly under the action of an electric field. Therefore, the development of bistable liquid crystal microcapsules is an important direction for the development of bistable electronic paper technology.

In view of the above problems, the present invention provides a microcapsule liquid crystal and a microcapsule liquid crystal display device thereof. When a low frequency voltage is applied by adding a conductive material to the liquid crystal layer of the capsule, the arrangement of the liquid crystal is disturbed, and the liquid crystal is lowered. Orderly, this low order can be maintained after power is removed. The smectic microcapsule display element is displayed in a near-transparent state after being applied in a fog state after being applied with a voltage and locally heated.

An aspect of the present invention provides a microcapsule liquid crystal comprising a smectic liquid crystal and a capsule wall encapsulating the smectic liquid crystal, wherein the smectic liquid crystal is added Into the electrical conductor.

Further, the microencapsulated liquid crystal further includes an additive gel material.

Further, the gel material comprises a mixture of any one or any of UV glue, animal glue, vegetable glue, microbial glue, polyvinyl alcohol.

Further, the conductive material is an ionic conductive material.

Further, the conductive material is inorganic nanoparticles with conductive properties, carbon nanotubes, graphene, sodium carbonate, cetyltriethylammonium bromide, ethyltriphenylphosphonium iodide, (ferrocene) Methyl)trimethylammonium iodide, 1,2-dimethyl-3-butylimidazolium hexafluorophosphate, tetraethylamine p-toluenesulfonate, phenyltriethylammonium iodide, 1- Octyl-3-methylimidazolium hexafluorophosphate, bis(tetra-n-butylamine) bis(1,3-dithiacyclopentadiene-2-thione-4,5-dithiol) palladium (II ), tetra-n-butyl bis(1,3-dithiacyclopentadien-2-thione-4,5-dithiol) nickel (III), bis (tetra-n-butylammonium) double (1) , 3-dithiole-2-thione-4,5-dithiol) zinc, bis(tetra-n-butylammonium)-tetracyanodiphenol quinodimethane, tetrabutylammonium bromide, Cetyl ammonium perchlorate, cetyl tetraammonium bromide, 1-butyl-3-methylimidazolium tetrachloroferrate, methyltriphenylphosphonium iodide or tetraphenylphosphonium iodide Any one or a mixture of any ones.

Further, the conductive material accounts for 0.0001%-10% of the total weight of the microcapsule liquid crystal.

Further, the conductive material accounts for 0.001%-10% of the total weight of the microcapsule liquid crystal.

According to still another aspect of the present invention, a microcapsule liquid crystal display device includes: an upper substrate; a first electrode formed on the upper substrate; a lower substrate; a second electrode on the lower substrate; and a microcapsule liquid crystal according to any one of claims 1 to 6 coated between the first electrode and the second electrode; a reflective sheet disposed under the The substrate side is for reflecting light transmitted through the microcapsule liquid crystal layer; and the heating sheet is disposed outside the lower substrate for heating the display device.

Another aspect of the present invention provides a microcapsule liquid crystal display device comprising: an upper substrate; a first electrode formed on the upper substrate; a lower substrate; a second electrode formed on the lower substrate; a microcapsule liquid crystal according to any one of claims 1 to 6 between the first electrode and the second electrode; and a reflection sheet disposed on the lower substrate side for light transmitted through the liquid crystal layer of the microcapsule A reflection heating sheet is disposed on the outer side of the lower substrate for heating the display device.

Further, the reflective sheet is disposed between the heating sheet and the lower substrate or the reflective sheet is disposed between the lower substrate and the second electrode or the reflective sheet is disposed on the second electrode The microcapsules are between liquid crystals.

Further, the reflective sheet may replace the lower substrate, and the second electrode is disposed between the reflective sheet and the microcapsule liquid crystal layer.

Further, the plurality of heater chips are distributed in a matrix, and the size of the heater chip corresponds to the size of a display primitive.

Further, the microcapsule liquid crystal display device is powered to display a fog state, and after the voltage is removed, the fog state can be maintained.

Further, the microcapsule liquid crystal display device is heated to display a transparent state, After stopping heating, keep it close to the transparent state.

Further, when the microcapsule liquid crystal display device is in operation, it is first charged to a fog state, and the display device is heated to be transparent by the electric heating sheet or the heating device, and is in a nearly transparent state after stopping heating.

Further, the upper substrate, the lower substrate, and the reflective sheet are made of a flexible material substrate.

Further, the color of the reflective sheet may be selected from black or other colors.

Compared with the prior art, the present invention has an advantage in that bistable characteristics during electric driving can be maintained by adding a conductive material to the liquid crystal layer of the capsule. The smectic microcapsule display element is displayed in a haze state after being applied with a voltage and locally heated, and is displayed in a nearly transparent state in black and white or color. The display device of the capsule liquid crystal of the present invention has a good bistable effect and is preferably applicable. For flexible display devices.

11‧‧‧Upper substrate

12‧‧‧ Lower substrate

13‧‧‧Upper electrode

14‧‧‧ lower electrode

15‧‧‧microcapsule wall

16‧‧‧microcapsule wall

17‧‧‧ liquid crystal molecules

18‧‧‧ Conductor

21‧‧‧Upper substrate

22‧‧‧Upper electrode

23‧‧‧Encapsulated smectic liquid crystal layer

24‧‧‧ lower electrode

25‧‧‧lower substrate

26‧‧‧reflector

27‧‧‧ heating film

31‧‧‧Upper substrate

32‧‧‧Upper electrode

33‧‧‧Encapsulated smectic liquid crystal layer

34‧‧‧ lower electrode

35‧‧‧lower substrate

37‧‧‧ heating film

38‧‧‧ heating film

41‧‧‧Upper substrate

42‧‧‧Upper electrode

43‧‧‧Encapsulated smectic liquid crystal layer

44‧‧‧ lower electrode

45‧‧‧lower substrate

46‧‧‧reflector

47‧‧‧ heating film

48‧‧‧ heating film

51‧‧‧Upper substrate

52‧‧‧Upper electrode

53‧‧‧Encapsulated smectic liquid crystal layer

54‧‧‧ lower electrode

55‧‧‧lower substrate

56‧‧‧reflector

57‧‧‧ heating film

1A is a schematic view showing the distribution state of the microcapsule liquid crystal after pressurization of the microcapsule liquid crystal display device of the present invention; FIG. 1B is a schematic view showing the distribution state of the microcapsule liquid crystal after heating of the microcapsule liquid crystal display device of the present invention; 1 is a cross-sectional view of a microcapsule liquid crystal display device according to a first embodiment of the present invention; and FIG. 4 is a cross-sectional view of a microcapsule liquid crystal display device according to a second embodiment of the present invention; Figure 5 is a cross-sectional view showing a microcapsule liquid crystal display device of a third embodiment of the present invention.

The above and other objects, features and advantages of the present invention will become more <RTIgt;

In the following description, numerous specific details are set forth However, it will be apparent that the invention can be embodied without these specific details. In other instances, known structures and devices are shown in block diagram form in order to avoid unnecessary misunderstanding of the present invention.

The present invention provides a microcapsule liquid crystal, in particular, a smectic phase microcapsule liquid crystal for bistable display, comprising a smectic liquid crystal and a capsule wall encapsulating the smectic liquid crystal, wherein the smectic liquid crystal A conductive substance is added to it. The encapsulated smectic liquid crystal material is uniformly mixed with a small amount of conductive material in a common smectic liquid crystal, and the capsule material is preferably a polyurea film, and then becomes a coating by a polymer dispersion method or a polymer polymerization method. The conductive material may be an ammonium salt ion, and the polymer polymerization method may be an emulsion polymerization method or a suspension polymerization method. Wherein, the microencapsulated liquid crystal further comprises adding a gel material. Preferably, the gel material comprises a mixture of UV glue, animal glue, vegetable glue, microbial glue, polyvinyl alcohol or any combination thereof.

The conductive material is inorganic nano particles with conductive properties, carbon nanotubes, graphene, sodium carbonate, cetyltriethylammonium bromide, ethyltriphenylphosphonium iodide, (ferrocenylmethyl) three Ammonium methyl iodide, 1,2-dimethyl-3-butylimidazolium hexafluorophosphate, tetraethylamine p-toluenesulfonate, phenyltriethylammonium iodide, 1-octyl-3- Methylimidazolium hexafluorophosphate, bis(tetra-n-butylamine) bis(1,3-dithiacyclopentadiene-2-thione-4,5-dithiol) palladium (II), tetra-n-butyl Bis(1,3-dithiacyclopentadienyl-2-thione-4,5-dithiol) nickel (III), bis(tetra-n-butylammonium) bis(1,3-disulfide) Heterocyclic pentene-2-thione-4,5-dithiol) zinc, bis(tetra-n-butylammonium)tetracyanodiphenol quinodimethane, tetrabutylammonium bromide, hexadecyl high Any one or any of ammonium chlorate, cetyl tetraammonium bromide, 1-butyl-3-methylimidazolium tetrachloroferrate, methyltriphenylphosphonium iodide or tetraphenylphosphonium iodide A mixture of several.

The conductive material accounts for 0.1%-10% of the total weight of the encapsulated smectic liquid crystal layer.

A display device using the above-described micro-gel liquid crystal is as shown in Figs. 1A and 1B. In FIG. 1A, the upper substrate 11 and the lower substrate 12 are made of a flexible and flexible plastic film as the upper and lower substrates, and the upper electrode 13 and the lower electrode 14 are made of an organic conductive material or an inorganic conductive material. The upper electrode 13 and the lower electrode 14 are placed on the upper substrate 11 and the lower substrate 12, respectively, by plating, sputtering, coating, or spin coating. The encapsulated smectic liquid crystal coating is applied between the lower electrode 14 and the upper electrode 13 by a coating method. The coating method is a roll-to-roll method to form an encapsulated smectic liquid crystal layer.

As shown in FIG. 1A, after a voltage V is applied between the lower electrode 14 and the upper electrode 13, under the action of the conductive material 18, the liquid crystal molecules 17 enclosed in the microcapsule wall 16 are distributed in a disordered state, and the display device exhibits It is foggy. The mist display effect can be maintained after the voltage V is removed.

As shown in FIG. 1B, on the side of the upper substrate 11 or the side of the lower substrate 12 or A heat source is placed on both sides of the upper substrate 11 and the lower substrate 12, for example, by heating the printing device to raise the temperature of the encapsulated smectic liquid crystal. Under the action of the conductive material 18, the directors of the liquid crystal molecules 17 enclosed in the microcapsule wall 15 are uniform and parallel to the direction of the upper and lower substrates, and the display device exhibits a transparent state. After the heating is stopped, the director of the liquid crystal molecules 17 remains Parallel to the upper and lower substrates, the directors of each liquid crystal molecule 17 are not completely identical, but due to the high order of the smectic liquid crystal molecules, the heating is stopped to be in a nearly transparent state, and the external light can directly pass through the display device. If a reflection sheet is placed under the lower substrate of the display device, external light directly passing through the display device is reflected by the reflection sheet, and then emitted from the display device to display the color of the reflection sheet. The transparent display effect of the display device can remain close to a transparent state after the heating is stopped. Wherein, the heating device can selectively adopt a heating method such as laser, infrared, electric heating wire, heating probe, etc., and the accuracy of the heating device defines the size of the display device.

The encapsulated smectic phase liquid crystal provided by the invention adds the ionic conductor, and realizes the bistable display after power-on and heating. Moreover, the addition of ammonium salt ions to the liquid crystal formulation simplifies the refreshing process, and the bistable display can be directly realized without the process of heating and cooling.

Fig. 2 is a cross-sectional view showing a microcapsule liquid crystal display device according to a first embodiment of the present invention. By using the microcapsule liquid crystal capsule provided by the above invention, the present invention provides a microcapsule liquid crystal display device which can realize a flexible bi-stable display device. As shown in FIG. 2, the present invention provides a microcapsule liquid crystal display device. The upper substrate 21 and the lower substrate 25 are flexible transparent substrates, preferably plastics such as PET and PT. Substrate. On the upper and lower sides of the encapsulated smectic liquid crystal layer 23 (the third embodiment of the encapsulated smectic liquid crystal layer 33, the fourth image of the encapsulated smectic liquid crystal layer 43 and the fifth image of the encapsulated smectic liquid crystal layer 53) They are transparent conductive films: upper electrode 22 and lower electrode 24, respectively. A reflection sheet 26 is attached to the lower surface of the lower substrate 25, and preferably, the reflection sheet 26 and the lower substrate are cemented by an optical adhesive OCA (Optically Clear Adhesive). Preferably, the reflective sheet is an ultra-thin flexible material. The heater chip 27 is disposed on the lower side of the reflection sheet 26. The plurality of heater chips are distributed in a matrix, and the size of the heater chip corresponds to the size of a display element, that is, the size of the heater chip defines the size of the display device.

Fig. 3 is a view showing the operation of the microcapsule liquid crystal display device of the first embodiment of the present invention. By using the microcapsule liquid crystal capsule provided by the above invention, the present invention provides a microcapsule liquid crystal display device which can realize a flexible bi-stable display device. In FIG. 3, a voltage V is applied between the upper electrode 32 of the upper substrate 31 and the lower electrode 34 of the lower substrate 35, and the encapsulated smectic liquid crystal exhibits a fog state as shown in FIG. 2, and the mist is removed after the voltage is removed. The state continues to be maintained. Then, the heating sheet 38 heats the upper encapsulated smectic liquid crystal to make the upper encapsulated smectic liquid crystal appear transparent, and after stopping the heating, it remains in a nearly transparent state. At the same time, the heating sheet 37 which is not subjected to heat treatment maintains the mist state of the encapsulated smectic liquid crystal directly above. The liquid crystal that maintains the fog state directly reflects the external light, and the surface of the display device exhibits the display effect of the area A as shown in FIG. The liquid crystal is kept close to the transparent state, and the external light passes through the liquid crystal layer, is reflected by the reflective sheet, and then passes through the liquid crystal layer to emit the display device, and the surface of the display device exhibits the display effect of the region B in FIG. Area B display The color of the reflective sheet. Preferably, the reflection sheet has a black color. In actual use, the reflective sheet can be selected from other colors. After the applied voltage V is removed and the heating is stopped, the display effect shown in Fig. 3 is maintained. Based on the above working principle, the smectic phase microcapsule display device can be reused by powering up and heating.

Figure 4 is a cross-sectional view showing a microcapsule liquid crystal display device of a second embodiment of the present invention. By using the microcapsule liquid crystal capsule provided by the above invention, the present invention provides a microcapsule liquid crystal display device which can realize a flexible bi-stable display device. In Fig. 4, the upper substrate 41 and the lower substrate 45 are flexible transparent substrates, preferably plastic substrates such as PET and PT. A transparent upper electrode 42 is disposed on the lower side of the upper substrate 41. A reflection sheet 46 is disposed on the upper surface of the lower substrate 45, and the reflection sheet can be formed by a process such as sputtering, vapor deposition, printing, or the like. A transparent lower electrode 44 is disposed above the reflection sheet 46. A heater chip 47 is disposed on the lower side of the lower substrate 45. The plurality of heater chips are distributed in a matrix, and the size of the heater chip corresponds to the size of a display element, that is, the size of the heater chip defines the size of the display device.

In FIG. 4, a voltage V is applied between the upper electrode 42 of the upper substrate 41 and the lower electrode 44 of the lower substrate 45, and the encapsulated smectic liquid crystal exhibits a fog state as shown in FIG. 2, and the voltage is removed after the voltage is removed. The state continues to be maintained. Then, the heating sheet 48 heats the upper encapsulated smectic liquid crystal to make the upper encapsulated smectic liquid crystal appear transparent, and after stopping the heating, it remains in a nearly transparent state. At the same time, the heating sheet 47 which is not subjected to the heat treatment is maintained, and the encapsulated smectic phase liquid crystal directly above maintains the mist state. The liquid crystal that keeps the fog state directly reflects the external light; keeps close to the transparent state The liquid crystal, after the external light passes through the liquid crystal layer and is reflected by the reflective sheet, passes through the liquid crystal layer to emit the display device, and displays the color of the reflective sheet. The color of the reflective sheet is independent of the display color of the liquid crystalline liquid. Thereby two patterns of different brightness or different colors are formed on the surface of the flexible bistable display device. After the applied voltage V is removed and the heating is stopped, the display effect shown in Fig. 4 is maintained. Based on the above described working principle, the smectic phase microcapsule display device can be reused by powering up and heating.

Figure 5 is a cross-sectional view showing a microcapsule liquid crystal display device of a third embodiment of the present invention. By using the microcapsule liquid crystal capsule provided by the above invention, the present invention provides a microcapsule liquid crystal display device which can realize a flexible bi-stable display device. In FIG. 5, the upper substrate 51 and the lower substrate 55 are flexible transparent substrates, preferably plastic substrates such as PET and PT. A transparent upper electrode 52 is disposed on the lower side of the upper substrate 51. A transparent lower electrode 54 is disposed on the upper surface of the lower substrate 55. A reflection sheet 56 is disposed above the lower electrode 54, and the reflection sheet can be formed by a process such as sputtering, vapor deposition, printing, or the like. A heater chip 57 is disposed on the lower side of the lower substrate 55. The plurality of heater chips are distributed in a matrix, and the size of the heater chip corresponds to the size of a display element, that is, the size of the heater chip defines the size of the display device.

In FIG. 5, a voltage V is applied between the upper electrode 52 of the upper substrate 51 and the lower electrode 54 of the lower substrate 55, and the encapsulated smectic liquid crystal exhibits a fog state as shown in FIG. 2, and the voltage is removed after the voltage is removed. The state continues to be maintained. Then, the heating sheet 58 heats the upper encapsulated smectic liquid crystal to make the upper encapsulated smectic liquid crystal appear transparent, and after stopping the heating, it remains in a nearly transparent state. Simultaneously, The heating sheet 57 which is not subjected to heat treatment maintains the mist state of the encapsulated smectic liquid crystal directly above. The liquid crystal that keeps the fog state directly reflects the external light; the liquid crystal is kept close to the transparent state, and the external light passes through the liquid crystal layer, is reflected by the reflective sheet, and then passes through the liquid crystal layer to emit the display device, showing the color of the reflective sheet. The color of the reflective sheet is independent of the display color of the liquid crystalline liquid. Thereby two patterns of different brightness or different colors are formed on the surface of the flexible bistable display device. After the applied voltage V is removed and the heating is stopped, the display effect shown in Fig. 5 is maintained. Based on the above described working principle, the smectic phase microcapsule display device can be reused by powering up and heating.

In the microcapsule liquid crystal display device provided by the above embodiments of the present invention, if the upper substrate and the lower substrate are made of a flexible substrate such as a metal foil, it is required between the upper electrode and the upper substrate, and between the lower electrode and the lower substrate. A transparent insulating layer such as SiO2, SiNx or the like is disposed.

In the microcapsule liquid crystal display device provided by the above embodiments of the present invention, if the reflective sheet is a conductive layer or a weak conductive layer, a transparent insulating layer such as SiO 2 , SiN x or the like needs to be disposed between the reflective sheet and the lower electrode.

In the microcapsule liquid crystal display device provided by the above embodiments of the present invention, a small amount of conductive substances (such as ammonium salt ions) are uniformly mixed in the smectic liquid crystal, and then the polymer dispersion method or the polymer polymerization method is used. For example, emulsion polymerization or suspension and legalization, a small amount of gel is added to the coating, and is applied between the upper electrode 22 and the lower electrode 24 to form an encapsulated smectic liquid crystal layer.

In the microcapsule liquid crystal display device provided by the above embodiments of the present invention, the upper electrode layer 22 may be formed on the encapsulated smectic liquid crystal layer, and then covered. The upper substrate 21 is formed to form a smectic phase microcapsule display element.

The encapsulated smectic liquid crystal display device provided by the above embodiments of the present invention can effectively avoid the light leakage phenomenon caused by distortion or light pressure, improve the softness of the smectic liquid crystal layer, and expand the application range of the smectic phase flexible screen. The encapsulated smectic liquid crystal provided by the present invention can also be applied to other flexible display technologies such as flexible electronic paper, curved display, and the like.

The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the specific details in the above embodiments, and various equivalent transformations may be made to the technical solutions of the present invention within the scope of the technical idea of the present invention. It belongs to the scope of protection of the present invention.

It should be further noted that the specific technical features described in the above specific embodiments may be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not be further described in various possible combinations.

11‧‧‧Upper substrate

12‧‧‧ Lower substrate

13‧‧‧Upper electrode

14‧‧‧ lower electrode

15‧‧‧microcapsule wall

16‧‧‧microcapsule wall

17‧‧‧ liquid crystal molecules

18‧‧‧ Conductor

Claims (17)

A microcapsule liquid crystal comprising: a smectic liquid crystal and a capsule wall encapsulating the smectic liquid crystal, wherein a conductive material is added to the smectic liquid crystal. The microcapsule liquid crystal according to claim 1, wherein the microencapsulated liquid crystal further comprises a gel material. The microcapsule liquid crystal according to claim 2, wherein the gel material comprises a mixture of UV glue, animal glue, vegetable glue, microbial glue, polyvinyl alcohol or any combination thereof. The microcapsule liquid crystal according to claim 1, wherein the conductive material is an ionic conductive material. The microcapsule liquid crystal according to claim 1, wherein the conductive material is inorganic nano particles with conductive properties, carbon nanotubes, graphene, sodium carbonate, cetyltriethylammonium bromide, and B. Triphenylphosphine iodide, (ferrocenylmethyl)trimethylammonium iodide, 1,2-dimethyl-3-butylimidazolium hexafluorophosphate, tetraethylamine p-toluenesulfonate , phenyltriethylammonium iodide, 1-octyl-3-methylimidazolium hexafluorophosphate, bis(tetra-n-butylamine) bis(1,3-dithiacyclopentadiene-2-thione) -4,5-dithiol) palladium (II), tetra-n-butyl bis(1,3-dithiacyclopentadien-2-thione-4,5-dithiol) nickel (III), Bis(tetra-n-butylammonium) bis(1,3-dithiol-2-thione-4,5-dithiol) zinc, bis(tetra-n-butylammonium)-tetracyano Phenolphthale methane, tetrabutylammonium bromide, cetyl ammonium perchlorate, cetyl tetraammonium bromide, 1-butyl-3-methylimidazolium tetrachloroferrate, methyltriphenyl Any one or a mixture of any of sulfonium iodide or tetraphenylphosphonium iodide. The microcapsule liquid crystal according to Item 4 or 5, wherein the conductive material accounts for 0.0001% to 10% of the total weight of the microcapsule liquid crystal. The microcapsule liquid crystal according to claim 6, wherein the conductive material accounts for 0.001% to 10% of the total weight of the microcapsule liquid crystal. A microcapsule liquid crystal display device comprising: an upper substrate, a first electrode formed on the upper substrate; a lower substrate, a second electrode formed on the lower substrate; and a microcapsule liquid crystal, such as a patent application The first item to the seventh item are applied between the first electrode and the second electrode; a reflective sheet is disposed on the lower substrate side for reflecting light transmitted through the liquid crystal layer of the microcapsule; A heating device is disposed on the outer side of the upper substrate and/or the lower substrate for heating a display device. A microcapsule liquid crystal display device comprising: an upper substrate, a first electrode formed on the upper substrate; a lower substrate, a second electrode formed on the lower substrate; and a microcapsule liquid crystal, such as the patent application scope The first item to the seventh item are applied between the first electrode and the second electrode; a reflective sheet is disposed on the lower substrate side for reflecting light transmitted through the liquid crystal layer of the microcapsule; and A heater chip is disposed on an outer side of the lower substrate for heating a display device. The microcapsule liquid crystal display device according to claim 8 or 9, wherein the reflective sheet is disposed between the heating sheet and the lower substrate or the reflective sheet is disposed on the lower substrate and the second electrode Between or the reflective sheet is disposed on the second electrode and the microcapsule liquid crystal between. The microcapsule liquid crystal display device according to claim 10, wherein the reflective sheet can replace the lower substrate. The microcapsule liquid crystal display device according to claim 9, wherein the plurality of heater chips are distributed in a matrix, and the size of the heater chip corresponds to a size of a display primitive. The microcapsule liquid crystal display device according to claim 8 or 9, wherein the microcapsule liquid crystal display device is powered to display a fog state, and after the voltage is removed, the fog state can be maintained. The microcapsule liquid crystal display device according to claim 8 or 9, wherein the microcapsule liquid crystal display device is heated to display a transparent state, and after the heating is stopped, the transparent state can be maintained. The microcapsule liquid crystal display device according to Item 8 or 9, wherein the microcapsule liquid crystal display device is first powered to a fog state, and the display is passed through the electric heating sheet or the heating device. The device is heated to a transparent state and is in a nearly transparent state after the heating is stopped. The microcapsule liquid crystal display device according to claim 8 or 9, wherein the upper substrate, the lower substrate, and the reflective sheet are made of a flexible material substrate. The microcapsule liquid crystal display device according to claim 8 or 9, wherein the color of the reflective sheet can be selected from black or other colors.