KR20240020434A - Electrochromic device - Google Patents

Abstract

Examples include electrochromic portion; and an optoelectron capping unit that absorbs photoelectrons generated when external light is incident on the electrochromic unit.

Description

Electrochromic device {Electrochromic device}

The embodiment relates to an electrochromic device.

Electrochromic film is a film whose color changes due to coloring and decolorization due to oxidation-reduction reactions at each anode and cathode due to an applied potential. It is a film that allows the user to artificially control visible light and infrared light, and is available in a variety of types. Inorganic oxides are used as electrode materials.

Various electrochromic films as described above have been developed and applied for patents. Looking at the contents of the patent applications, Korea Patent Publication No. 2001-0087586 discloses a film in which a conductive indium-tin oxide thin film is deposited on a glass film. MoO3, a reduced color oxide, is deposited on one of the two ITO films (1A, 1B), and WO3, a reduced color oxide, is deposited on the other, and then a lithium-based solid electrolyte, an alkali metal, is deposited on it. Polyaniline, a conductive polymer, is put between the two sheets and passed through a high-frequency compression roller to produce a film that changes from transparent to blue when voltage is applied. In Domestic Registered Utility Model Publication No. 0184841, indium-tinoxide is deposited on a glass film with a thickness of 005 mm. After that, the electrical energy is characterized in that it is combined with a high-frequency roller on both sides of the transition metal oxide film on which WO ₃ , a reduced coloring material, and IrO ₂ , an oxidized coloring material, are deposited with α-PEO copolymer, a polymer solid electrolyte, in between. A discoloring film is known.

The embodiment seeks to provide an electrochromic device with improved durability.

An electrochromic device according to an embodiment includes an electrochromic portion; and an optoelectronic capping unit that absorbs photoelectrons generated when external light is incident on the electrochromic unit.

In one embodiment, the electrochromic unit includes a first substrate; a first transparent electrode disposed on the first substrate; a first reduction discoloration layer disposed on the first transparent electrode; an electrolyte layer disposed on the first reduced discoloration layer; a first oxidation discoloration layer disposed on the first electrolyte layer; a second transparent electrode disposed on the first oxidation discoloration layer; and a second substrate disposed on the second transparent electrode, wherein the photoelectrons may be generated in the first oxidation discoloration layer.

In one embodiment, the optoelectronic capping unit may be electrically connected to the first transparent electrode and the second transparent electrode.

In one embodiment, the optoelectronic capping unit includes a third transparent electrode electrically connected to the first transparent electrode; a second oxidized discoloration layer disposed on the third transparent electrode; a second electrolyte layer disposed on the second oxidation discoloration layer; a second reduced discoloration layer disposed on the second electrolyte layer; and a fourth transparent electrode disposed on the second reduction discoloration layer and electrically connected to the second transparent electrode.

In one embodiment, the first transparent electrode and the third transparent electrode may be integrally formed, and the second transparent electrode and the fourth transparent electrode may be integrally formed.

In one embodiment, the optoelectronic capping unit includes first optoelectronic capping units 12 extending parallel to each other; and a second optoelectronic capping part 13, wherein the electrochromic part may be disposed between the first optoelectronic capping part 12 and the second optoelectronic capping part 13.

In one embodiment, the optoelectronic capping unit may be disposed between the first substrate and the second substrate.

In one embodiment, the first reduced discoloration layer is tungsten oxide, niobium pentaoxide, vanadium pentaoxide, titanium oxide, molybdenum oxide, viologen, or poly(3,4-ethylenedioxythiophene (Poly( 3,4-ethylenedioxythiophene); PEDOT), wherein the second reduction discoloration layer includes tungsten oxide, niobium pentoxide, vanadium pentoxide, titanium oxide, molybdenum oxide, and viologen. or poly(3,4-ethylenedioxythiophene); PEDOT), wherein the first oxidation discoloration layer includes Prussian blue, lithium nickel oxide, and iridium. It may include at least one from the group consisting of oxide, and the second oxidation discoloration layer may include at least one from the group consisting of Prussian blue, lithium nickel oxide, and iridium oxide.

In one embodiment, the first reduction discoloration layer receives cations contained in the first electrolyte layer by a driving voltage applied to the first transparent electrode and the second transparent electrode, and the second reduction discoloration layer When the external light is incident on the electrochromic unit, it can accommodate positive ions included in the second electrolyte layer.

In one embodiment, the first oxidation discoloration layer releases positive ions to the first electrolyte layer by a driving voltage applied to the first transparent electrode and the second transparent electrode, and the second oxidation discoloration layer When external light is incident on the electrochromic unit, positive ions may be emitted into the second electrolyte layer.

An electrochromic device according to an embodiment includes a first substrate; a first transparent electrode disposed on the first substrate; a third transparent electrode disposed on the first substrate and formed integrally with the first transparent electrode; a first reduced discoloration layer disposed on the first transparent electrode; a second oxidation discoloration layer disposed on the third transparent electrode; an electrolyte layer covering the first reduction discoloration layer and the second oxidation discoloration layer; a first oxidized discoloration layer disposed on the electrolyte layer; a second reduction discoloration layer disposed on the electrolyte layer; a second transparent electrode disposed on the first oxidation discoloration layer; a fourth transparent electrode disposed on the second reduction discoloration layer and formed integrally with the second transparent electrode; and a second substrate disposed on the second transparent electrode and the fourth transparent electrode.

A window device according to an embodiment includes a frame; a window mounted on the frame; And it may include the electrochromic element disposed in the window.

An electrochromic device according to an embodiment includes an optoelectronic capping unit. When external light is incident on the electrochromic unit, photoelectrons may be generated. The photoelectrons may be accommodated in the photoelectron capping unit.

Accordingly, the electrochromic device according to the embodiment can suppress the side reaction caused by the photoelectrons and prevent a decrease in durability of the electrochromic portion due to the side reaction.

In particular, the optoelectronic capping part is disposed between the first substrate and the second substrate. Additionally, the first transparent electrode and the third transparent electrode may be integrally formed, and the second transparent electrode and the fourth transparent electrode may be integrally formed.

Accordingly, photoelectrons generated from the electrochromic unit can be easily transferred to the photoelectron capping unit through the first transparent electrode, the second transparent electrode, the third transparent electrode, and the fourth transparent electrode. there is.

Therefore, the electrochromic device according to the embodiment has a simple structure and can easily collect the photoelectrons.

In particular, the optoelectronic capping unit may be inserted into the first substrate and the second substrate. Accordingly, the electrochromic device according to the embodiment can have a simple structure and improved durability.

1 is a plan view showing an electrochromic device according to an embodiment.
FIG. 2 is a cross-sectional view taken along line A-A' in FIG. 1.
Figures 3 to 6 are cross-sectional views showing the process of manufacturing an electrochromic device according to an embodiment.
Figure 7 is a diagram illustrating a window device according to an embodiment.

In the description of the embodiment, when each part, surface, layer, or substrate is described as being formed “on” or “under” each part, surface, layer, or substrate, “On” and “under” include those formed “directly” or “indirectly” through other elements. In addition, the standards for the top or bottom of each component are explained based on the drawings. The size of each component in the drawings may be exaggerated for explanation and does not indicate the actual size.

1 is a plan view showing an electrochromic device according to an embodiment. FIG. 2 is a cross-sectional view taken along line A-A' in FIG. 1.

1 and 2, the electrochromic device 10 according to the embodiment includes an electrochromic portion 11 and an optoelectronic capping portion 12 and 13.

The electrochromic portion 11 is disposed in the central portion. The electrochromic portion 11 may occupy most of the planar area of the electrochromic device according to the embodiment. The electrochromic portion 11 may occupy about 1% to about 10% of the planar area of the electrochromic device according to the embodiment, based on the total planar area.

The electrochromic unit 11 can adjust the light transmittance of the electrochromic device according to the embodiment by using an external driving voltage.

The optoelectronic capping unit is disposed on one outer side. The optoelectronic capping part is disposed on one side of the electrochromic part 11. The optoelectronic capping unit is disposed on the outside of the electrochromic device according to the embodiment.

The optoelectronic capping part may have a shape extending in one direction. The electrochromic device according to the embodiment may extend in the longitudinal direction. The optoelectronic capping part may have a shape extending in the longitudinal direction. At this time, the width of the optoelectronic capping portion may be about 1% to about 10% based on the total width of the electrochromic device according to the embodiment.

The optoelectronic capping unit may include a first optoelectronic capping unit 12 and a second optoelectronic capping unit 13.

The first optoelectronic capping part 12 and the second optoelectronic capping part 13 may have a shape extending parallel to each other. The electrochromic part 11 may be disposed between the first optoelectronic capping part 12 and the second optoelectronic capping part 13.

Referring to FIG. 2, the electrochromic unit 11 includes a first substrate 100, a second substrate 200, a first transparent electrode 300, a second transparent electrode 400, and a first reduced color change layer ( 500), a first oxidation discoloration layer 600, and a first electrolyte layer 700.

The first substrate 100, together with the second substrate 200, includes the first transparent electrode 300, the first reduction discoloration layer 500, the first oxidation discoloration layer 600, and the second Supports the transparent electrode 400 and the first electrolyte layer 700.

In addition, the first substrate 100, together with the second substrate 200, includes the first transparent electrode 300, the first reduction discoloration layer 500, the first oxidation discoloration layer 600, and the first transparent electrode 300. 2 The transparent electrode 400 and the first electrolyte layer 700 are sandwiched. The first substrate 100, together with the second substrate 200, includes the first transparent electrode 300, the first reduction discoloration layer 500, the first oxidation discoloration layer 600, and the second transparent electrode 300. The electrode 400 and the first electrolyte layer 700 can be protected from external physical and chemical shock.

The first substrate 100 may include polymer resin. The first substrate 100 may include at least one from the group consisting of polyester-based resin, polyimide-based resin, cyclic olefin polymer resin, polyethersulfone, polycarbonate, or polyolefin-based resin.

The first substrate 100 may include polyester resin as a main component. The first substrate 100 may include polyethylene terephthalate. The first substrate 100 may contain polyethylene terephthalate in an amount of about 90 wt% or more based on the total composition. The first substrate 100 may contain polyethylene terephthalate in an amount of about 95 wt% or more based on the total composition. The first substrate 100 may contain polyethylene terephthalate in an amount of about 97 wt% or more based on the total composition. The first substrate 100 may contain polyethylene terephthalate in an amount of about 98 wt% or more based on the total composition.

The first substrate 100 may include a uniaxially or biaxially stretched polyethylene terephthalate film. The first substrate 100 may include a polyethylene terephthalate film stretched about 2 to about 5 times in the longitudinal direction and/or the width direction.

The first substrate 100 may have high mechanical properties to reinforce the glass when applied to the windows of a building or vehicle.

The first substrate 100 may have a tensile strength of about 7 kgf/mm2 to about 40 kgf/mm2 in the longitudinal direction. The first substrate 100 may have a tensile strength of about 8 kgf/mm2 to about 35 kgf/mm2 in the longitudinal direction.

The first substrate 100 may have a tensile strength of about 7 kgf/mm2 to about 40 kgf/mm2 in the width direction. The first substrate 100 may have a tensile strength of about 8 kgf/mm2 to about 35 kgf/mm2 in the width direction.

The first substrate 100 may have a modulus of about 200 kgf/mm2 to about 400 kgf/mm2 in the longitudinal direction. The first substrate 100 may have a modulus of about 250 kgf/mm2 to about 350 kgf/mm2 in the longitudinal direction. The first substrate 100 may have a modulus of about 250 kgf/mm2 to about 270 kgf/mm2 in the longitudinal direction.

The first substrate 100 may have a modulus of about 200 kgf/mm2 to about 400 kgf/mm2 in the width direction. The first substrate 100 may have a modulus of about 250 kgf/mm2 to about 350 kgf/mm2 in the width direction. The first substrate 100 may have a modulus of about 250 kgf/mm2 to about 270 kgf/mm2 in the width direction.

The first substrate 100 may have an elongation at break of about 30% to about 150% in the longitudinal direction. The first substrate 100 may have an elongation at break of about 30% to about 130% in the longitudinal direction. The first substrate 100 may have an elongation at break of about 40% to about 120% in the longitudinal direction.

The first substrate 100 may have an elongation at break of about 30% to about 150% in the longitudinal direction. The first substrate 100 may have an elongation at break of about 30% to about 130% in the longitudinal direction. The first substrate 100 may have an elongation at break of about 40% to about 120% in the longitudinal direction.

The first substrate 100 may have an elongation at break of about 30% to about 150% in the width direction. The first substrate 100 may have an elongation at break of about 30% to about 130% in the width direction. The first substrate 100 may have an elongation at break of about 40% to about 120% in the width direction.

The modulus, the elongation at break and the tensile strength can be measured according to KS B 5521.

Additionally, the modulus, tensile strength, and elongation at break can be measured by ASTM D882.

Because the first substrate 100 has the improved mechanical strength as described above, the first transparent electrode 300, the second transparent electrode 400, the first reduced discoloration layer 500, and the first oxidized The discoloration layer 600 and the first electrolyte layer 700 can be efficiently protected. Additionally, because the first substrate 100 has improved mechanical strength as described above, it can efficiently reinforce the mechanical strength of the glass to which it is to be attached.

Additionally, the first substrate 100 may have high chemical resistance. Accordingly, even if the electrolyte contained in the electrolyte leaks to the first substrate 100, damage to the surface of the first substrate 100 can be minimized.

The first substrate 100 may have improved optical properties. The total light transmittance of the first substrate 100 may be about 55% or more. The total light transmittance of the first substrate 100 may be about 70% or more. The total light transmittance of the first substrate 100 may be about 75% to about 99%. The total light transmittance of the first substrate 100 may be about 80% to about 99%.

The haze of the first substrate 100 may be about 20% or less. It may be from about 0.1% to about 20%. The haze of the first substrate 100 may be about 0.1% to about 10%. The haze of the first substrate 100 may be about 0.1% to about 7%.

The total light transmittance and the haze can be measured by ASTM D 1003, etc.

Since the first substrate 100 has appropriate total light transmittance and haze, the electrochromic device according to the embodiment can have improved optical properties. That is, because the first substrate 100 has appropriate transmittance and haze, the electrochromic device according to the embodiment is applied to the window, appropriately adjusting the transmittance, minimizing distortion of the image from the outside, and improving appearance. You can have

Additionally, the first substrate 100 may have an in-plane retardation of about 100 nm to about 4000 nm. The first substrate 100 may have an in-plane retardation of about 200 nm to about 3500 nm. The first substrate 100 may have an in-plane retardation of about 200 nm to about 3000 nm.

The first substrate 100 may have an in-plane retardation of about 7000 nm or more. The first substrate 100 may have an in-plane retardation of about 7000 nm to about 50000 nm. The first substrate 100 may have an in-plane retardation of about 8000 nm to about 20000 nm.

The in-plane phase difference can be derived from the refractive index and thickness depending on the direction of the first substrate 100.

Since the first substrate 100 has the above-mentioned in-plane retardation, the electrochromic device according to the embodiment may have an improved appearance.

The thickness of the first substrate 100 may be about 10 μm to about 200 μm. The thickness of the first substrate 100 may be about 23㎛ to about 150㎛. The thickness of the first substrate 100 may be about 30 μm to about 120 μm.

The first substrate 100 may include organic or inorganic filler. The organic or inorganic filler may function as an anti-blocking agent.

The average particle diameter of the filler may be about 0.1 μm to about 5 μm. The average particle diameter of the filler may be about 0.1 μm to about 3 μm. The average particle diameter of the filler may be about 0.1 μm to about 1 μm.

The filler may be selected from at least one group consisting of silica particles, barium sulfate particles, alumina particles, or titania particles.

Additionally, the filler may be included in the first substrate 100 in an amount of about 0.01 wt% to about 3 wt% based on the entire first substrate 100. The filler may be included in the first substrate 100 in an amount of about 0.05 wt% to about 2 wt% based on the entire first substrate 100.

The first substrate 100 may have a single-layer structure. For example, the first substrate 100 may be a single-layer polyester film.

The first substrate 100 may have a multilayer structure. For example, the first substrate 100 may be a multilayer co-extruded film. The multilayer coextruded structure may include a center layer, a first surface layer, and a second surface layer. The filler may be included in the first surface layer and the second surface layer.

The second substrate 200 faces the first substrate 100. The second substrate 200 is disposed on the first substrate 100. One end of the second substrate 200 may be arranged to be offset from one end of the first substrate 100 . The other end of the second substrate 200 may be arranged to be offset from the other end of the first substrate 100.

The second substrate 200, together with the first substrate 100, includes the first transparent electrode 300, the first reduction discoloration layer 500, the first oxidation discoloration layer 600, and the second Supports the transparent electrode 400 and the first electrolyte layer 700.

In addition, the second substrate 200 includes the first transparent electrode 300, the first reduction discoloration layer 500, the first oxidation discoloration layer 600, and the first transparent electrode 300 together with the first substrate 100. 2 The transparent electrode 400 and the first electrolyte layer 700 are sandwiched. The second substrate 200, together with the first substrate 100, includes the first transparent electrode 300, the first reduction discoloration layer 500, the first oxidation discoloration layer 600, and the second transparent electrode 300. The electrode 400 and the first electrolyte layer 700 can be protected from external physical and chemical shock.

The second substrate 200 may include polymer resin. The second substrate 200 may include at least one from the group consisting of polyester-based resin, polyimide-based resin, cyclic olefin polymer resin, polyethersulfone, polycarbonate, or polyolefin-based resin.

The second substrate 200 may include polyester resin as a main component. The second substrate 200 may include polyethylene terephthalate. The second substrate 200 may contain polyethylene terephthalate in an amount of about 90 wt% or more based on the total composition. The second substrate 200 may contain polyethylene terephthalate in an amount of about 95 wt% or more based on the total composition. The second substrate 200 may contain polyethylene terephthalate in an amount of about 97 wt% or more based on the total composition. The second substrate 200 may contain polyethylene terephthalate in an amount of about 98 wt% or more based on the total composition.

The second substrate 200 may include a uniaxially or biaxially stretched polyethylene terephthalate film. The second substrate 200 may include a polyethylene terephthalate film stretched about 2 to about 5 times in the longitudinal direction and/or the width direction.

The second substrate 200 may have high mechanical properties to reinforce the glass when applied to the windows of a building or vehicle.

The second substrate 200 may have a tensile strength of about 7 kgf/mm2 to about 40 kgf/mm2 in the longitudinal direction. The second substrate 200 may have a tensile strength of about 8 kgf/mm2 to about 35 kgf/mm2 in the longitudinal direction.

The second substrate 200 may have a tensile strength of about 7 kgf/mm2 to about 40 kgf/mm2 in the width direction. The second substrate 200 may have a tensile strength of about 8 kgf/mm2 to about 35 kgf/mm2 in the width direction.

The second substrate 200 may have a modulus of about 200 kgf/mm2 to about 400 kgf/mm2 in the longitudinal direction. The second substrate 200 may have a modulus of about 250 kgf/mm2 to about 350 kgf/mm2 in the longitudinal direction. The second substrate 200 may have a modulus of about 250 kgf/mm2 to about 270 kgf/mm2 in the longitudinal direction.

The second substrate 200 may have a modulus of about 200 kgf/mm2 to about 400 kgf/mm2 in the width direction. The second substrate 200 may have a modulus of about 250 kgf/mm2 to about 350 kgf/mm2 in the width direction. The second substrate 200 may have a modulus of about 250 kgf/mm2 to about 270 kgf/mm2 in the width direction.

The second substrate 200 may have an elongation at break of about 30% to about 150% in the longitudinal direction. The second substrate 200 may have an elongation at break of about 30% to about 130% in the longitudinal direction. The second substrate 200 may have an elongation at break of about 40% to about 120% in the longitudinal direction.

The second substrate 200 may have an elongation at break of about 30% to about 150% in the longitudinal direction. The second substrate 200 may have an elongation at break of about 30% to about 130% in the longitudinal direction. The second substrate 200 may have an elongation at break of about 40% to about 120% in the longitudinal direction.

The second substrate 200 may have an elongation at break of about 30% to about 150% in the width direction. The second substrate 200 may have an elongation at break of about 30% to about 130% in the width direction. The second substrate 200 may have an elongation at break of about 40% to about 120% in the width direction.

Because the second substrate 200 has the improved mechanical strength as described above, the first transparent electrode 300, the second transparent electrode 400, the first reduced discoloration layer 500, and the first oxidized The discoloration layer 600 and the first electrolyte layer 700 can be efficiently protected. Additionally, because the second substrate 200 has improved mechanical strength as described above, it can efficiently reinforce the mechanical strength of the glass to which it is to be attached.

Additionally, the second substrate 200 may have high chemical resistance. Accordingly, even if the electrolyte contained in the electrolyte leaks to the second substrate 200, damage to the surface of the second substrate 200 can be minimized.

The second substrate 200 may have improved optical properties. The total light transmittance of the second substrate 200 may be about 55% or more. The total light transmittance of the second substrate 200 may be about 70% or more. The total light transmittance of the second substrate 200 may be about 75% to about 99%. The total light transmittance of the second substrate 200 may be about 80% to about 99%.

The haze of the second substrate 200 may be about 20% or less. It may be from about 0.1% to about 20%. The haze of the second substrate 200 may be about 0.1% to about 10%. The haze of the second substrate 200 may be about 0.1% to about 7%.

Since the second substrate 200 has appropriate total light transmittance and haze, the electrochromic device according to the embodiment can have improved optical properties. That is, because the second substrate 200 has appropriate transmittance and haze, the electrochromic device according to the embodiment is applied to the window, appropriately adjusting the transmittance, minimizing distortion of the image from the outside, and improving appearance. You can have

Additionally, the second substrate 200 may have an in-plane retardation of about 100 nm to about 4000 nm. The second substrate 200 may have an in-plane retardation of about 200 nm to about 3500 nm. The second substrate 200 may have an in-plane retardation of about 200 nm to about 3000 nm.

The second substrate 200 may have an in-plane retardation of about 7000 nm or more. The second substrate 200 may have an in-plane retardation of about 7000 nm to about 50000 nm. The second substrate 200 may have an in-plane retardation of about 8000 nm to about 20000 nm.

The in-plane retardation may be derived from the refractive index and thickness of the second substrate 200 according to its direction.

Since the second substrate 200 has the above-described in-plane retardation, the electrochromic device according to the embodiment may have an improved appearance.

The thickness of the second substrate 200 may be about 10 μm to about 200 μm. The thickness of the first substrate 100 may be about 23㎛ to about 150㎛. The thickness of the first substrate 100 may be about 30 μm to about 120 μm.

The second substrate 200 may include organic or inorganic filler. The organic or inorganic filler may function as an anti-blocking agent.

The average particle diameter of the filler may be about 0.1 μm to about 5 μm. The average particle diameter of the filler may be about 0.1 μm to about 3 μm. The average particle diameter of the filler may be about 0.1 μm to about 1 μm.

The filler may be selected from at least one group consisting of silica particles, barium sulfate particles, alumina particles, or titania particles.

Additionally, the filler may be included in the second substrate 200 in an amount of about 0.01 wt% to about 3 wt% based on the entire second substrate 200. The filler may be included in the second substrate 200 in an amount of about 0.05 wt% to about 2 wt% based on the entire second substrate 200.

The second substrate 200 may have a single-layer structure. For example, the second substrate 200 may be a single-layer polyester film.

The second substrate 200 may have a multilayer structure. For example, the second substrate 200 may be a multilayer co-extruded film.

The first substrate 100 and the second substrate 200 may be flexible. Accordingly, the electrochromic device according to the embodiment may be flexible as a whole.

The first transparent electrode 300 is disposed on the first substrate 100. The first transparent electrode 300 may be formed by depositing on the first substrate 100. Additionally, a hard coating layer may be further included between the first transparent electrode 300 and the first substrate 100.

The first transparent electrode 300 is made of tin oxide, zinc oxide, silver (Ag), chromium (Cr), indium tin oxide (ITO), fluorine doped tin oxide (FTO), and aluminum. Aluminum doped Zinc Oxide (AZO), Gallium doped Zinc Oxide (GZO), Antimony doped Tin Oxide (ATO), Indium zinc oxide (IZO), It may include at least one from the group consisting of Niobium doped Titanium Oxide (NTO) or Cadmium Tin Oxide (CTO).

Additionally, the first transparent electrode 300 may include graphene, silver nanowire, and/or metal mesh.

The first transparent electrode 300 may have a total light transmittance of about 80% or more. The first transparent electrode 300 may have a total light transmittance of about 85% or more. The first transparent electrode 300 may have a total light transmittance of about 88% or more.

The first transparent electrode 300 may have a haze of about 10% or less. The first transparent electrode 300 may have a haze of about 7% or less. The first transparent electrode 300 may have a haze of about 5% or less.

The sheet resistance of the first transparent electrode 300 may be about 1Ω/sq to 60Ω/sq. The sheet resistance of the first transparent electrode 300 may be about 1Ω/sq to 40Ω/sq. The sheet resistance of the first transparent electrode 300 may be about 1Ω/sq to 30Ω/sq.

The thickness of the first transparent electrode 300 may be about 50 nm to about 50 μm. The thickness of the first transparent electrode 300 may be about 100 nm to about 10 μm. The thickness of the first transparent electrode 300 may be about 150 nm to about 5 μm.

The first transparent electrode 300 is electrically connected to the first reduced discoloration layer 500. Additionally, the first transparent electrode 300 is electrically connected to the first electrolyte layer 700 through the first reduction discoloration layer 500.

The second transparent electrode 400 is disposed below the second substrate 200. The second transparent electrode 400 may be formed by depositing on the second substrate 200. Additionally, a hard coating layer may be further included between the second transparent electrode 400 and the second substrate 200.

The second transparent electrode 400 is made of tin oxide, zinc oxide, silver (Ag), chromium (Cr), indium tin oxide (ITO), fluorine doped tin oxide (FTO), and aluminum. Aluminum doped Zinc Oxide (AZO), Gallium doped Zinc Oxide (GZO), Antimony doped Tin Oxide (ATO), Indium zinc oxide (IZO), It may include at least one from the group consisting of Niobium doped Titanium Oxide (NTO) or Cadmium Tin Oxide (CTO).

Additionally, the second transparent electrode 400 may include graphene, silver nanowire, and/or metal mesh.

The second transparent electrode 400 may have a total light transmittance of about 80% or more. The second transparent electrode 400 may have a total light transmittance of about 85% or more. The second transparent electrode 400 may have a total light transmittance of about 88% or more.

The second transparent electrode 400 may have a haze of about 10% or less. The second transparent electrode 400 may have a haze of about 7% or less. The second transparent electrode 400 may have a haze of about 5% or less.

The sheet resistance of the second transparent electrode 400 may be about 1Ω/sq to 60Ω/sq. The sheet resistance of the second transparent electrode 400 may be about 1Ω/sq to 40Ω/sq. The sheet resistance of the second transparent electrode 400 may be about 1Ω/sq to 30Ω/sq.

The thickness of the second transparent electrode 400 may be about 50 nm to about 50 μm. The thickness of the second transparent electrode 400 may be about 100 nm to about 10 μm. The thickness of the second transparent electrode 400 may be about 150 nm to about 5 μm.

The second transparent electrode 400 is electrically connected to the first oxidation discoloration layer 600. Additionally, the second transparent electrode 400 is electrically connected to the first electrolyte layer 700 through the first oxidation discoloration layer 600.

The first reduction discoloration layer 500 is disposed on the first transparent electrode 300. The first reduction discoloration layer 500 may be directly disposed on the upper surface of the first transparent electrode 300. The first reduced discoloration layer 500 may be directly electrically connected to the first transparent electrode 300.

The first reduced discoloration layer 500 is electrically connected to the first transparent electrode 300. The first reduced discoloration layer 500 may be directly connected to the first transparent electrode 300. Additionally, the first reduced discoloration layer 500 is electrically connected to the first electrolyte layer 700. The first reduced discoloration layer 500 may be electrically connected to the first electrolyte layer 700.

The first reduction discoloration layer 500 may be discolored by receiving electrons. The first reduction color change layer 500 may include a first electrochromic material that changes color by receiving electrons. The first electrochromic material is tungsten oxide, niobium pentaoxide, vanadium pentaoxide, titanium oxide, molybdenum oxide, vilogen, or poly(3,4-ethylenedioxythiophene). ;PEDOT) may include at least one from the group.

The first reduction color change layer 500 may include the first electrochromic material in particle form. The tungsten oxide, niobium pentaoxide, vanadium pentaoxide, titanium oxide, and molybdenum oxide may be particles having a particle size of about 1 nm to about 200 nm.

Additionally, the first reduced discoloration layer 500 may further include a binder. The binder may be an inorganic binder. The binder may include silica gel. The binder may be formed of silica sol containing tetramethoxysilane or methyltrimethoxysilane.

The first oxidation discoloration layer 600 is disposed below the second transparent electrode 400. The first oxidation discoloration layer 600 may be directly disposed on the lower surface of the second transparent electrode 400. The first oxidation discoloration layer 600 may be directly electrically connected to the second transparent electrode 400.

The first oxidation discoloration layer 600 is electrically connected to the second transparent electrode 400. The first oxidation discoloration layer 600 may be directly connected to the second transparent electrode 400. Additionally, the first oxidation discoloration layer 600 is electrically connected to the first electrolyte layer 700. The first oxidation discoloration layer 600 may be electrically connected to the first electrolyte layer 700.

The first oxidation discoloration layer 600 may change color as it loses electrons. The first oxidation discoloration layer 600 may include a second electrochromic material that is oxidized and discolors as it loses electrons. The first oxidized discoloration layer 600 may include at least one from the group consisting of Prussian blue, nickel oxide, and iridium oxide.

The first oxidation discoloration layer 600 may include the second electrochromic material in particle form. The Prussian blue, nickel oxide, and iridium oxide may be particles having a particle size of about 1 nm to about 200 nm.

Additionally, the first oxidation discoloration layer 600 may further include the binder.

The first electrolyte layer 700 is disposed on the first reduced discoloration layer 500. Additionally, the first electrolyte layer 700 is disposed below the first oxidation discoloration layer 600. The first electrolyte layer 700 is disposed between the first reduction discoloration layer 500 and the first oxidation discoloration layer 600.

The first electrolyte layer 700 may include a solid polymer electrolyte containing metal ions or an inorganic hydrate. The first electrolyte layer 700 may include lithium ions (Li+), sodium ions (Na+), potassium ions (K+), etc.

Specifically, Poly-AMPS, PEO/LiCF ₃ SO ₃ , etc. can be used as the solid polymer electrolyte, and Sb ₂ O ₅ .4H ₂ O, etc. can be used as the inorganic hydrate.

Additionally, the first electrolyte layer 700 is configured to provide electrolyte ions involved in electrochromic reaction. The electrolyte ion may be, for example, a monovalent cation such as H+, Li+, Na+, K+, Rb+, or Cs+.

The first electrolyte layer 700 may include an electrolyte. As examples of the electrolyte, liquid electrolyte, gel polymer electrolyte, or inorganic solid electrolyte can be used without limitation. Additionally, the electrolyte may be used in the form of a single layer or film so that it can be stacked together with the electrode or substrate.

The type of electrolyte salt used in the first electrolyte layer 700 is not particularly limited as long as it can contain a compound capable of providing monovalent cations, that is, H+, Li+, Na+, K+, Rb+, or Cs+. For example, the first electrolyte layer 700 is LiClO ₄ , LiBF ₄ , LiAsF ₆ , LiPF ₆ , LiCl, LiBr, LiI, LiB ₁₀ Cl ₁₀ , LiCF ₃ SO ₃ , LiCF ₃ CO ₂ , LiAsF ₆ , LiSbF ₆ , LiAlCl ₄ , CH ₃ SO ₃ Li, CF ₃ SO ₃ Li or (CF ₃ SO ₂ ) ₂ NLi; Alternatively, it may include a sodium salt compound such as NaClO ₄ .

In one example, the first electrolyte layer 700 may include a Cl or F element-containing compound as an electrolyte salt. Specifically, the first electrolyte layer 700 is LiClO ₄ , LiBF ₄ , LiAsF ₆ , LiPF ₆ , LiCl, LiB ₁₀ Cl ₁₀ , LiCF ₃ SO ₃ , LiCF ₃ CO ₂ , LiAsF ₆ , LiSbF ₆ , LiAlCl ₄ , It may include one or more electrolyte salts selected from CF ₃ SO ₃ Li, (CF ₃ SO ₂ ) ₂ NLi, and NaClO ₄ .

The electrolyte may further include a carbonate compound as a solvent. Since carbonate-based compounds have a high dielectric constant, ionic conductivity can be increased. As a non-limiting example, a solvent such as propylene carbonate (PC), ethylene carbonate (EC), dimethyl carbonate (DMC), diethyl carbonate (DEC), or ethylmethyl carbonate (EMC) may be used as a carbonate-based compound.

In another example, when the first electrolyte layer 700 includes a gel polymer electrolyte, the first electrolyte layer 700 is poly-vinyl sulfonic acid, poly-styrene sulfonic acid, -styrene sulfonic acid, poly-ethylene sulfonic acid, poly-2-acrylamido-2methyl-propane sulfonic acid, poly-perfluoro sulfonic acid ( Poly-perfluoro sulfonic acid, Poly-toluene sulfonic acid, Poly-vinyl alcohol, Poly-ethylene imine, Poly-vinyl pyrrolidone pyrrolidone), poly-ethylene oxide (PEO), poly-propylene oxide (PPO), poly-(ethylene oxide, siloxane) (PEOS) ), poly-(ethylene glycol, siloxane), poly-(propylene oxide, siloxane), poly-(ethylene oxide, methyl methacrylate )(poly-(ethylene oxide, methyl methacrylate) (PEO-PMMA)), poly-(ethylene oxide, acrylic acid) (PEO PAA)), poly-(propylene glycol, methyl methacrylate) It may contain polymers such as acrylate (poly-(propylene glycol, methyl methacrylate) (PPG PMMA)), poly-ethylene succinate, or poly-ethylene adipate. . In one example, a mixture of two or more or a copolymer of two or more of the polymers listed above may be used as the polymer electrolyte.

Additionally, the first electrolyte layer 700 may include a curable resin that can be hardened by ultraviolet ray irradiation or heat. The curable resin may be at least one selected from the group consisting of acrylate-based oligomers, polyethylene glycol-based oligomers, urethane-based oligomers, polyester-based oligomers, polyethylene glycol dimethyl, or polyethylene glycol diacrylate. Additionally, the first electrolyte layer 700 may include a photocuring initiator and/or a thermal curing initiator.

The thickness of the first electrolyte layer 700 may be about 10 ㎛ to about 200 ㎛. The thickness of the first electrolyte layer 700 may be about 50 μm to about 150 μm.

The first electrolyte layer 700 may have a transmittance in the range of 60% to 95%. Specifically, the first electrolyte layer 700 may have a transmittance of 60% to 95% for visible light in the wavelength range of 380 nm to 780 nm, more specifically, 400 nm wavelength or 550 nm wavelength. The transmittance can be measured using a known haze meter (HM).

The first optoelectronic capping part 12 is disposed on one side of the electrochromic part 11. The first optoelectronic capping part 12 is disposed between the first substrate 100 and the second substrate 200.

The first optoelectronic capping unit 12 includes a third transparent electrode 310, a second oxidation discoloration layer 610, a second electrolyte layer 710, a second reduction discoloration layer 510, and a fourth transparent electrode. Includes.

The third transparent electrode 310 is disposed on the first substrate 100. The third transparent electrode 310 is disposed next to the first transparent electrode 300. The third transparent electrode 310 may be disposed on the top surface of the first substrate 100. The third transparent electrode 310 may be disposed on the same plane as the first transparent electrode 300.

The third transparent electrode 310 is electrically connected to the first transparent electrode 300. The third transparent electrode 310 may be directly physically connected to the first transparent electrode 300. The third transparent electrode 310 may be formed integrally with the first transparent electrode 300. That is, the third transparent electrode 310 may be formed of the same material as the first transparent electrode 300 when the first transparent electrode 300 is formed.

The second oxidized discoloration layer 610 is disposed on the third transparent electrode 310. The second oxidation discoloration layer 610 may be disposed next to the first reduction discoloration layer 500. The second oxidation discoloration layer 610 may be disposed on the same plane as the first reduction discoloration layer 500. Although not shown in the drawing, the second oxidation discoloration layer 610 may be spaced apart from the first reduction discoloration layer 500 at a predetermined distance.

The second oxidation discoloration layer 610 may be disposed on the upper surface of the third transparent electrode 310. The second oxidation discoloration layer 610 may be directly disposed on the upper surface of the third transparent electrode 310. The second oxidized discoloration layer 610 may be in direct contact with the upper surface of the third transparent electrode 310.

The second oxidized discoloration layer 610 may be electrically connected to the third transparent electrode 310. The second oxidized discoloration layer 610 may be electrically connected to the third transparent electrode layer 310 by direct contact.

The second oxidation discoloration layer 610 may change color as it loses electrons. The second oxidation discoloration layer 610 may include a second electrochromic material that is oxidized and discolors as it loses electrons. The second oxidation discoloration layer 610 may include at least one from the group consisting of Prussian blue, nickel oxide, and iridium oxide.

The second oxidation discoloration layer 610 may include the second electrochromic material in particle form. The Prussian blue, nickel oxide, and iridium oxide may be particles having a particle size of about 1 nm to about 200 nm.

Additionally, the second oxidation discoloration layer 610 may further include a binder. The binder may be an inorganic binder. The binder may include silica gel. The binder may be formed of silica sol containing tetramethoxysilane or methyltrimethoxysilane.

The second electrolyte layer 710 is disposed on the second oxidation discoloration layer 610. The second electrolyte layer 710 is disposed on the upper surface of the second oxidation discoloration layer 610. The second oxidation discoloration layer 610 may be disposed next to the first electrolyte layer 700.

Additionally, the second electrolyte layer 710 may be electrochemically connected to the second oxidation discoloration layer 610. That is, ions move between the second electrolyte layer 710 and the second oxidation discoloration layer 610, so that charges are transferred between the second electrolyte layer 710 and the second oxidation discoloration layer 610. can move from one to another.

The description of the components included in the second electrolyte layer 710 may be substantially the same as the description of the components included in the first electrolyte layer 700.

Additionally, the thickness of the second electrolyte layer 710 may be substantially the same as the thickness of the first electrolyte layer 700.

The second electrolyte layer 710 may be formed of substantially the same components as the first electrolyte layer 700.

The second electrolyte layer 710 may be formed integrally with the first electrolyte layer 700.

Alternatively, although not shown in the drawing, the second electrolyte layer 710 may be spaced apart from the first electrolyte layer 700. A separation groove is formed between the second electrolyte layer 710 and the first electrolyte layer 700, and the second electrolyte layer 710 and the first electrolyte layer 700 can be spaced apart at a predetermined interval. there is.

The second reduction discoloration layer 510 is disposed on the second electrolyte layer 710. The second reduction discoloration layer 510 is disposed on the upper surface of the second electrolyte layer 710. The second reduction discoloration layer 510 may be disposed directly on the upper surface of the second electrolyte layer 710.

The second reduction discoloration layer 510 is disposed next to the first oxidation discoloration layer 600. The second reduction discoloration layer 510 may be disposed on the same plane as the first oxidation discoloration layer 600.

The second reduction discoloration layer 510 may be spaced apart from the first oxidation discoloration layer 600 at a predetermined distance.

It is electrochemically connected to the second reduction discoloration layer 510 and the second electrolyte layer 710. That is, ions move to each other between the second electrolyte layer 710 and the second reduction discoloration layer 510, so that charges are transferred between the second electrolyte layer 710 and the second reduction discoloration layer 510. can move from one to another.

The second reduced discoloration layer 510 may be electrically connected to the fourth transparent electrode 410. The second reduction discoloration layer 510 may be electrically connected to the fourth transparent electrode layer 410 by direct contact.

The second reduction color change layer 510 may include a first electrochromic material that changes color by receiving electrons. The first electrochromic material is tungsten oxide, niobium pentaoxide, vanadium pentaoxide, titanium oxide, molybdenum oxide, vilogen, or poly(3,4-ethylenedioxythiophene). ;PEDOT) may include at least one from the group.

The second reduction discoloration layer 510 may include the first electrochromic material in particle form. The tungsten oxide, niobium pentaoxide, vanadium pentaoxide, titanium oxide, and molybdenum oxide may be particles having a particle size of about 1 nm to about 200 nm.

Additionally, the second reduced discoloration layer 510 may further include a binder. The binder may be an inorganic binder. The binder may include silica gel. The binder may be formed of silica sol containing tetramethoxysilane or methyltrimethoxysilane.

The fourth transparent electrode 410 is disposed on the second reduced discoloration layer 510. The fourth transparent electrode 410 is disposed next to the second transparent electrode 400. Additionally, the fourth transparent electrode 410 is disposed on the lower surface of the second substrate 200.

The fourth transparent electrode 410 is electrically connected to the second transparent electrode 400. The fourth transparent electrode 410 is connected to the second transparent electrode 400. The fourth transparent electrode 410 may be formed integrally with the second transparent electrode 400.

The second optoelectronic capping unit 13 includes a fifth transparent electrode 320, a third oxidation discoloration layer 620, a third electrolyte layer 720, a third reduction discoloration layer 520, and a sixth transparent electrode ( 420).

The fifth transparent electrode 320 is disposed on the first substrate 100. The fifth transparent electrode 320 is disposed next to the first transparent electrode 300. The fifth transparent electrode 320 may be disposed on the top surface of the first substrate 100. The fifth transparent electrode 320 may be disposed on the same plane as the first transparent electrode 300.

The fifth transparent electrode 320 is electrically connected to the first transparent electrode 300. The fifth transparent electrode 320 may be directly physically connected to the first transparent electrode 300. The fifth transparent electrode 320 may be formed integrally with the first transparent electrode 300. That is, the fifth transparent electrode 320 may be formed of the same material as the first transparent electrode 300 when the first transparent electrode 300 is formed.

The third oxidized discoloration layer 620 is disposed on the fifth transparent electrode 320. The third oxidation discoloration layer 620 may be disposed next to the first reduction discoloration layer 500. The third oxidation discoloration layer 620 may be disposed on the same plane as the first reduction discoloration layer 500. Although not shown in the drawing, the third oxidation discoloration layer 620 may be spaced apart from the first reduction discoloration layer 500 at a predetermined distance.

The third oxidized discoloration layer 620 may be disposed on the upper surface of the fifth transparent electrode 320. The third oxidation discoloration layer 620 may be directly disposed on the upper surface of the fifth transparent electrode 320. The third oxidized discoloration layer 620 may be in direct contact with the upper surface of the fifth transparent electrode 320.

The third oxidized discoloration layer 620 may be electrically connected to the fifth transparent electrode 320. The third oxidized discoloration layer 620 may be electrically connected to the fifth transparent electrode layer 320 by direct contact.

The third oxidation discoloration layer 620 may change color as it loses electrons. The third oxidation discoloration layer 620 may include a second electrochromic material that is oxidized and discolored while losing electrons. The third oxidation discoloration layer 620 may include at least one from the group consisting of Prussian blue, nickel oxide, and iridium oxide.

The third oxidation discoloration layer 620 may include the second electrochromic material in particle form. The Prussian blue, nickel oxide, and iridium oxide may be particles having a particle size of about 1 nm to about 200 nm.

Additionally, the third oxidized discoloration layer 620 may further include a binder. The binder may be an inorganic binder. The binder may include silica gel. The binder may be formed of silica sol containing tetramethoxysilane or methyltrimethoxysilane.

The third electrolyte layer 720 is disposed on the third oxidation discoloration layer 620. The third electrolyte layer 720 is disposed on the upper surface of the third oxidation discoloration layer 620. The third oxidation discoloration layer 620 may be disposed next to the first electrolyte layer 700.

Additionally, the third electrolyte layer 720 may be electrochemically connected to the third oxidation discoloration layer 620. That is, ions move to each other between the third electrolyte layer 720 and the third oxidation discoloration layer 620, so that charges are transferred between the third electrolyte layer 720 and the third oxidation discoloration layer 620. can move from one to another.

The description of the components included in the third electrolyte layer 720 may be substantially the same as the description of the components included in the first electrolyte layer 700.

Additionally, the thickness of the third electrolyte layer 720 may be substantially the same as the thickness of the first electrolyte layer 700.

The third electrolyte layer 720 may be formed of substantially the same components as the first electrolyte layer 700.

The third electrolyte layer 720 may be formed integrally with the first electrolyte layer 700.

Alternatively, although not shown in the drawing, the third electrolyte layer 720 may be spaced apart from the first electrolyte layer 700. A separation groove is formed between the third electrolyte layer 720 and the first electrolyte layer 700, and the third electrolyte layer 720 and the first electrolyte layer 700 can be spaced apart at a predetermined interval. there is.

The third reduction discoloration layer 520 is disposed on the third electrolyte layer 720. The third reduction discoloration layer 520 is disposed on the upper surface of the third electrolyte layer 720. The second reduced discoloration layer 510 may be directly disposed on the upper surface of the third electrolyte layer 720.

The third reduction discoloration layer 520 is disposed next to the first oxidation discoloration layer 600. The third reduction discoloration layer 520 may be disposed on the same plane as the first oxidation discoloration layer 600.

The third reduction discoloration layer 520 may be spaced apart from the first oxidation discoloration layer 600 at a predetermined distance.

It is electrochemically connected to the third reduction discoloration layer 520 and the third electrolyte layer 720. That is, ions move between the third electrolyte layer 720 and the third reduction and discoloration layer 520, thereby forming a charge between the third electrolyte layer 720 and the third reduction and discoloration layer 520. can move from one to another.

The third reduction discoloration layer 520 may be electrically connected to the sixth transparent electrode 420. The third reduction discoloration layer 520 may be electrically connected to the sixth transparent electrode layer 420 by direct contact.

The third reduction color change layer 520 may include a first electrochromic material that changes color by receiving electrons. The first electrochromic material is tungsten oxide, niobium pentaoxide, vanadium pentaoxide, titanium oxide, molybdenum oxide, vilogen, or poly(3,4-ethylenedioxythiophene). ;PEDOT) may include at least one from the group.

The third reduction color change layer 520 may include the first electrochromic material in particle form. The tungsten oxide, niobium pentaoxide, vanadium pentaoxide, titanium oxide, and molybdenum oxide may be particles having a particle size of about 1 nm to about 200 nm.

Additionally, the third reduced discoloration layer 520 may further include a binder. The binder may be an inorganic binder. The binder may include silica gel. The binder may be formed of silica sol containing tetramethoxysilane or methyltrimethoxysilane.

The sixth transparent electrode 420 is disposed on the third reduced discoloration layer 520. The sixth transparent electrode 420 is disposed next to the second transparent electrode 400. Additionally, the sixth transparent electrode 420 is disposed on the lower surface of the second substrate 200.

The sixth transparent electrode 420 is electrically connected to the second transparent electrode 400. The sixth transparent electrode 420 is connected to the second transparent electrode 400. The sixth transparent electrode 420 may be formed integrally with the second transparent electrode 400.

The electrochromic device according to the embodiment may further include a first bus bar (not shown) and a second bus bar (not shown).

The first bus bar is disposed on the first transparent electrode 300. The first bus bar is connected to the first transparent electrode 300. The first bus bar may be electrically connected to the first transparent electrode 300. The first bus bar may be in direct contact with the upper surface of the first transparent electrode 300. The first bus bar may be connected to the first transparent electrode 300 through solder.

The second bus bar is disposed below the second transparent electrode 400. The second bus bar is connected to the second transparent electrode 400.

The second bus bar may be electrically connected to the second transparent electrode 400. The second bus bar may be in direct contact with the lower surface of the second transparent electrode 400. The second bus bar may be connected to the second transparent electrode 400 through solder.

The first bus bar and/or the second bus bar may include metal. The first bus bar and/or the second bus bar may include a metal ribbon. The first bus bar and/or the second bus bar may include conductive paste. The first bus bar and/or the second bus bar may include a binder and a conductive filler.

The electrochromic device according to the embodiment can be manufactured by the following method. Figures 3 to 6 are cross-sectional views showing the process of manufacturing an electrochromic device according to an embodiment.

Referring to FIG. 3, a first transparent electrode 300 is formed on the first substrate 100. The first transparent electrode 300 may be formed through a vacuum deposition process. A metal oxide such as indium tin oxide may be deposited on the first substrate 100 through a sputtering process or the like to form the first transparent electrode 300.

The first transparent electrode 300 may be formed through a coating process. A nano metal wire may be coated with a binder on the first substrate 100 to form the first transparent electrode 300. A conductive polymer may be coated on the first substrate 100 to form the first transparent electrode 300.

Additionally, the first transparent electrode 300 may be formed through a patterning process. A metal layer may be formed on the first substrate 100 through a sputtering process, etc., and the metal layer may be patterned to form a first transparent electrode 300 including a metal mesh on the first substrate 100. .

Thereafter, a first reduction discoloration layer 500, a second oxidation discoloration layer 610, and a third oxidation discoloration layer 620 are formed on the first transparent electrode 300.

The first reduced discoloration layer 500 may be formed through a sol-gel coating process. A first sol solution containing a first electrochromic material, a binder, and a solvent may be coated on the first transparent electrode 300. A sol-gel reaction may occur in the coated first sol solution, and the first reduced discoloration layer 500 may be formed.

The first sol solution may include the first discoloring material in particle form in an amount of about 5 wt% to about 30 wt%. The first sol solution may include the binder in an amount of about 5 wt% to about 30 wt%. The first sol solution may include the solvent in an amount of about 60 wt% to about 90 wt%.

The first sol solution may further include a dispersant.

The solvent may be at least one selected from the group consisting of alcohols, ethers, ketones, esters, or aromatic hydrocarbons. The solvent is ethanol, propanol, butanol, hexanol, cyclohexanol, diacetone alcohol, ethylene glycol, diethylene glycol, glycerin, diethyl ether, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol modobutyl ether. , Diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, propylene glycol monomethyl ether, acetone, methyl ethyl ketone, acetylacetone, methyl isobutyl ketone, cyclohexanone, acetoacetate ester, methyl acetate, ethyl acetate, At least one or more may be selected from the group consisting of n-propyl acetate and i-butyl acetate.

As described above, the binder may be an inorganic binder.

Additionally, the second oxidation discoloration layer 610 and the third oxidation discoloration layer 620 (620) are formed on the first transparent electrode 300. The second oxidation discoloration layer 610 and the third oxidation discoloration layer 620 may be formed through a sol-gel coating process. A second sol solution containing a second electrochromic material, a binder, and a solvent may be coated on the first transparent electrode 300. A sol-gel reaction may occur in the coated second sol solution, and the second oxidation discoloration layer 610 (600) and the third oxidation discoloration layer 620 may be formed.

The second sol solution may include the second discoloring material in particle form in an amount of about 5 wt% to about 30 wt%. The second sol solution may include the binder in an amount of about 5 wt% to about 30 wt%. The second sol solution may include the solvent in an amount of about 60 wt% to about 90 wt%.

The second sol solution may further include a dispersant.

Referring to FIG. 4, an electrolyte composition for forming an electrolyte layer 700 is formed on the first reduction discoloration layer 500, the second oxidation discoloration layer 610, and the third oxidation discoloration layer 620. do.

The electrolyte composition may include a metal salt, an electrolyte, a photo-curing resin, and a photo-curing initiator. The photo-curable resin includes hexandiol diacrylate (HDDA), tripropylene glycol diacrylate (TPGDA), ethylene glycol diacrylate (EGDA), and trimethylolpropane triacrylate. TMPTA), trimethylolpropane ethoxylated triacrylate (TMPEOTA), glycerol propoxylated triacrylate (GPTA), pentaerythritol tetraacrylate (PETA), or Dipenta At least one may be selected from the group consisting of dipentaerythritol hexaacrylate (DPHA).

The metal salt, the electrolyte, and the photo curing initiator may be as described above.

A separation groove may be formed in the electrolyte layer 700 along the boundary between the first reduction discoloration layer 500 and the second oxidation discoloration layer 610. Additionally, a separation groove may be formed in the electrolyte layer along the boundary between the first reduction discoloration layer 500 and the third oxidation discoloration layer 620.

Referring to FIG. 5, a second transparent electrode 400 is formed on the second substrate 200.

The second transparent electrode 400 may be formed through a vacuum deposition process. A metal oxide such as indium tin oxide may be deposited on the second substrate 200 through a sputtering process or the like to form the second transparent electrode 400.

The second transparent electrode 400 may be formed through a coating process. A nano metal wire may be coated with a binder on the second substrate 200 to form the second transparent electrode 400. A conductive polymer may be coated on the second substrate 200 to form the second transparent electrode 400.

Additionally, the second transparent electrode 400 may be formed through a patterning process. A metal layer may be formed on the second substrate 200 through a sputtering process, etc., and the metal layer may be patterned to form a second transparent electrode 400 including a metal mesh on the second substrate 200. .

Thereafter, the first oxidation discoloration layer 600, the second reduction discoloration layer 510, and the third reduction discoloration layer 520 are formed on the second transparent electrode 400.

The first oxidation discoloration layer 600 may be formed through a sol-gel coating process. A second sol solution containing a second electrochromic material, a binder, and a solvent may be coated on the second transparent electrode 400. A sol-gel reaction may occur in the coated second sol solution, and the first oxidation discoloration layer 600 may be formed.

The second sol solution may include the second discoloring material in particle form in an amount of about 5 wt% to about 30 wt%. The second sol solution may include the binder in an amount of about 5 wt% to about 30 wt%. The second sol solution may include the solvent in an amount of about 60 wt% to about 90 wt%.

The second sol solution may further include a dispersant.

The second reduced discoloration layer 510 and the third reduced discoloration layer 520 may be formed through a sol-gel coating process. A first sol solution containing the first electrochromic material, the binder, and the solvent may be coated on the second transparent electrode 400. A sol-gel reaction may occur in the coated first sol solution, and the second reduced discoloration layer 510 and the third reduced discoloration layer 520 may be formed.

The first sol solution may include the first discoloring material in particle form in an amount of about 5 wt% to about 30 wt%. The first sol solution may include the binder in an amount of about 5 wt% to about 30 wt%. The first sol solution may include the solvent in an amount of about 60 wt% to about 90 wt%.

The first sol solution may further include a dispersant.

Referring to FIG. 6, the second substrate 200, the second transparent electrode 400, the first oxidation discoloration layer 600, the second reduction discoloration layer 510, and the third reduction discoloration layer ( 520) is laminated on the coated electrolyte composition. At this time, the first oxidation discoloration layer 600, the second reduction discoloration layer 510, and the third reduction discoloration layer 520 are in direct contact with the coated electrolyte composition.

Thereafter, the coated electrolyte composition is cured by light, and the first substrate 100, the first transparent electrode 300, the first reduction discoloration layer 500, and the second oxidation discoloration layer 610 and a first laminate including the third oxidation discoloration layer 620, the second substrate 200, the second transparent electrode 400, the first oxidation discoloration layer 600, and the second reduction discoloration layer. A second laminate including layer 510 and the third reductive discoloration layer 520 is laminated to each other. That is, the first laminate and the second laminate may be adhered to each other by the first electrolyte layer 700.

The first reduction discoloration layer 500 receives positive ions contained in the first electrolyte layer 700 by the driving voltage applied to the first transparent electrode 300 and the second transparent electrode 400. Accordingly, the electrochromic portion 11 is colored, and the electrochromic device according to the embodiment can reduce light transmittance.

At the same time, the first oxidation discoloration layer 600 releases positive ions to the first electrolyte layer 700 by the driving voltage applied to the first transparent electrode 300 and the second transparent electrode 400. You can. Accordingly, the electrochromic portion 11 is colored, and the electrochromic device according to the embodiment can reduce light transmittance.

Additionally, when light is incident on the electrochromic unit 11 from the outside, the electrochromic unit 11 may generate photoelectrons. At this time, the photoelectrons may be collected by the first photoelectron capping unit 12. When the first photoelectron capping unit 12 collects the photoelectrons, the second reduction discoloration layer 510 may accommodate positive ions included in the second electrolyte layer 710. Accordingly, the first photoelectron capping unit can efficiently cap the photoelectrons.

Likewise, when light is incident on the electrochromic unit 11 from the outside, the electrochromic unit 11 may generate photoelectrons. At this time, the photoelectrons may be collected by the second photoelectron capping unit 13. When the second photoelectron capping unit 13 collects the photoelectrons, the third reduction discoloration layer 520 may accommodate positive ions included in the third electrolyte layer 720. Accordingly, the second photoelectron capping unit can efficiently cap the photoelectrons.

Additionally, when light is incident on the electrochromic unit 11 from the outside, the electrochromic unit 11 may generate photoelectrons. At this time, the photoelectrons may be collected by the first photoelectron capping unit 12. When the first photoelectron capping unit 12 captures the photoelectrons, the second oxidation discoloration layer 610 may emit positive ions to the second electrolyte layer 710. Accordingly, the first photoelectron capping unit can efficiently cap the photoelectrons.

Likewise, when light is incident on the electrochromic unit 11 from the outside, the electrochromic unit 11 may generate photoelectrons. At this time, the photoelectrons may be collected by the second photoelectron capping unit 13. When the second photoelectron capping unit 13 collects the photoelectrons, the third oxidation discoloration layer 620 may emit positive ions to the third electrolyte layer 720. Accordingly, the second photoelectron capping unit can efficiently cap the photoelectrons.

The electrochromic device according to the embodiment includes optoelectronic capping portions 12 and 13. When external light is incident on the electrochromic portion 11, photoelectrons may be generated. The photoelectrons may be accommodated in the photoelectron capping unit.

Accordingly, the electrochromic device according to the embodiment can suppress the side reaction caused by the photoelectrons and prevent a decrease in durability of the electrochromic portion 11 due to the side reaction.

In particular, the optoelectronic capping parts 12 and 13 are disposed between the first substrate 100 and the second substrate 200. Additionally, the first transparent electrode 300 and the third transparent electrode 310 may be formed integrally, and the second transparent electrode 400 and the fourth transparent electrode 410 may be formed integrally. Additionally, the first transparent electrode 300 and the fifth transparent electrode 320 may be formed integrally, and the second transparent electrode 400 and the sixth transparent electrode 420 may be formed integrally.

Accordingly, photoelectrons generated from the electrochromic unit 11 are transmitted to the first transparent electrode 300, the second transparent electrode 400, the third transparent electrode 310, and the fourth transparent electrode 410. ) can be easily delivered to the first optoelectronic capping unit 12. Likewise, photoelectrons generated from the electrochromic portion 11 are transmitted through the first transparent electrode 300, the second transparent electrode 400, the fifth transparent electrode 320, and the sixth transparent electrode 420. It can be easily delivered to the second optoelectronic capping unit 13.

Therefore, the electrochromic device according to the embodiment has a simple structure and can easily collect the photoelectrons.

In particular, the optoelectronic capping parts 12 and 13 may be inserted into the first substrate 100 and the second substrate 200. Accordingly, the electrochromic device according to the embodiment can have a simple structure and improved durability.

FIG. 7 is a diagram illustrating a window device 1 according to an embodiment.

Referring to FIG. 7, the window device 1 according to the embodiment includes the electrochromic element 10, a frame 20, windows 31, 32, and 33, a plug-in component 40, and a power source 50. Includes.

The frame 20 may be composed of one or more pieces. For example, the frame 20 may be composed of one or more materials such as vinyl, PVC, aluminum (Al), steel, or fiberglass. The frame 20 fixes the windows 31, 32, and 33 and seals the space between the windows 31, 32, and 33. also,

The frame 20 may hold or include pieces of foam or other material. The frame 20 includes a spacer, and the spacer can be placed between adjacent windows 31, 32, and 33. Additionally, the spacer, together with the adhesive sealant, can airtightly seal the space between the windows 31, 32, and 33.

The windows 31, 32, 33 are fixed to the frame 20. The windows 31, 32, and 33 may be glass panes. The windows 31, 32, 33 are made of conventional silicon oxide (SOx) glass, such as soda lime glass or float glass, consisting of approximately 75% silica (SiO2) plus Na2O, CaO, and some minor additives. It may be a glass substrate of the system. However, any material with suitable optical, electrical, thermal, and mechanical properties may be used. The windows 31, 32, 33 can also be made of, for example, other glass materials, plastics and thermoplastics (e.g. poly(methyl methacrylate), polystyrene, polycarbonate, allyl diglycol carbonate, SAN (styrene acrylonitrile copolymer), poly(4-methyl-1-pentene), polyester, polyamide), or mirror materials. The windows 31, 32, and 33 may include tempered glass.

The windows 31, 32, and 33 may include a first window 31, a second window 32, and a third window 33. The first window 31 and the third window 33 may be disposed on the outermost side, and the second window 32 may be disposed between the first window 31 and the third window 33. there is.

The electrochromic element 10 is disposed between the first window 31 and the second window 32. The electrochromic element 10 may be laminated to the first window 31 and the second window 32.

The electrochromic element 10 may be laminated to the first window 31 using a first polyvinyl butyral sheet. That is, the first polyvinyl butyral sheet may be disposed on the first window 31 and the electrochromic element 10 and laminated on the first window 31 and the electrochromic element 10. .

The electrochromic element 10 may be laminated to the second window 32 by a second polyvinyl butyral sheet. That is, the second polyvinyl butyral sheet may be disposed on the second window 32 and the electrochromic element 10 and laminated on the second window 32 and the electrochromic element 10. .

A space 60 may be formed between the second window 32 and the third window 33. The space may be filled with one or more gases such as argon (Ar), krypton (Kr), or xenon (Xn).

The windows 31, 32, 33 may be any glass pane size for residential or commercial window applications. The size of glass panes can vary widely depending on the specific needs of a home or commercial business. In some embodiments, the windows 31, 32, and 33 may be formed of architectural glass. Architectural glass is commonly used in commercial buildings, but may also be used in residential buildings and typically, although not necessarily, separates the indoor environment from the outdoor environment. In some embodiments, a suitable architectural glass substrate may be at least approximately 20 inches by approximately 20 inches, and may be much larger, for example, approximately 80 inches by approximately 120 inches, or larger. Architectural glass is typically at least about 2 millimeters (mm) thick and can be as thick as 6 mm or more.

In one embodiment, the windows 31, 32, and 33 may have a thickness ranging from approximately 1 mm to approximately 10 mm.

In some embodiments, the windows 31, 32, 33 may be very thin and flexible, such as Gorilla Glass® or Willow ^TM Glass, each of which is commercially available from Corning, Inc. of Corning, New York. And these glasses can be less than 0.3 mm or about 1 mm thick.

The plug-in component (40) may include a first electrical input (41), a second electrical input (42), a third electrical input (43), a fourth electrical input (44) and a fifth electrical input (45). You can.

Additionally, the power supply unit 50 includes a first power terminal 51 and a second power terminal 52.

The first electrical input 41 is electrically coupled to the first power terminal 51 through one or more wires or other electrical connections, components, or devices.

The first electrical input 41 may include a pin, socket, or other electrical connector or conductor. Additionally, the first electrical input 41 may be electrically connected to the electrochromic element 10 through a first bus bar (not shown). The first bus bar may be electrically connected to the second transparent electrode 400.

The second electrical input 42 is electrically coupled to the second power terminal 52 through one or more wires or other electrical connections, components, or devices.

The second electrical input 42 may include a pin, socket, or other electrical connector or conductor. Additionally, the second electrical input 42 may be electrically connected to the electrochromic element 10 through a second bus bar (not shown). The second bus bar may be electrically connected to the first transparent electrode 300.

The third electrical input 43 may be coupled to device, system, or building ground.

The fourth electrical input 44 and the fifth electrical input 45 can be used individually, for example, for communication between a controller or microcontroller controlling the window device 1 and a network controller.

The power supply unit 50 supplies power to the electrochromic element 10 through the plug-in component 40. In addition, the power supply unit 50 can be controlled by the external controller to supply power of a certain waveform to the electrochromic element 10.

Additionally, the features, structures, effects, etc. described in the embodiments above are included in at least one embodiment of the present invention and are not necessarily limited to only one embodiment. Furthermore, the features, structures, effects, etc. illustrated in each embodiment can be combined or modified and implemented in other embodiments by a person with ordinary knowledge in the field to which the embodiments belong. Therefore, contents related to such combinations and modifications should be construed as being included in the scope of the present invention.

Although the above description focuses on the examples, this is only an example and does not limit the present invention, and those skilled in the art will be able to You will see that various variations and applications are possible. For example, each component specifically shown in the examples can be modified and implemented. And these variations and differences in application should be construed as being included in the scope of the present invention as defined in the appended claims.

Electrochromic section (11)
First optoelectronic capping part (12)
Second optoelectronic capping part (13)
First substrate (100)
Second substrate (200)
First transparent electrode (300)
Second transparent electrode (400)
First reduction discoloration layer (500)
First oxidation discoloration layer (600)
First electrolyte layer (700)

Claims (12)

Electrochromic part; and
An electrochromic device comprising an optoelectron capping portion that absorbs photoelectrons generated when external light is incident on the electrochromic portion. According to claim 1,
The electrochromic part
first substrate;
a first transparent electrode disposed on the first substrate;
a first reduced discoloration layer disposed on the first transparent electrode;
an electrolyte layer disposed on the first reduced discoloration layer;
a first oxidation discoloration layer disposed on the first electrolyte layer;
a second transparent electrode disposed on the first oxidation discoloration layer; and
A second substrate disposed on the second transparent electrode,
An electrochromic device wherein the photoelectrons are generated in the first oxidation-chromic layer. The electrochromic device of claim 2, wherein the optoelectronic capping part is electrically connected to the first transparent electrode and the second transparent electrode. According to claim 3,
The optoelectronic capping unit
a third transparent electrode electrically connected to the first transparent electrode;
a second oxidation discoloration layer disposed on the third transparent electrode;
a second electrolyte layer disposed on the second oxidation discoloration layer;
a second reduced discoloration layer disposed on the second electrolyte layer; and
An electrochromic device comprising a fourth transparent electrode disposed on the second reduction color change layer and electrically connected to the second transparent electrode. The method of claim 4, wherein the first transparent electrode and the third transparent electrode are integrally formed,
The electrochromic device wherein the second transparent electrode and the fourth transparent electrode are integrally formed. The method of claim 1, wherein the optoelectronic capping portion includes: first optoelectronic capping portions (12) extending parallel to each other; and a second optoelectronic capping portion 13,
The electrochromic part is an electrochromic element disposed between the first optoelectronic capping part (12) and the second optoelectronic capping part (13). The electrochromic device of claim 2, wherein the optoelectronic capping part is disposed between the first substrate and the second substrate. According to claim 4,
The first reduced discoloration layer is tungsten oxide, niobium pentaoxide, vanadium pentaoxide, titanium oxide, molybdenum oxide, viologen, or poly(3,4-ethylenedioxythiophene). Contains at least one from the group consisting of ;PEDOT),
The second reduced discoloration layer is tungsten oxide, niobium pentaoxide, vanadium pentaoxide, titanium oxide, molybdenum oxide, viologen, or poly(3,4-ethylenedioxythiophene). Contains at least one from the group consisting of ;PEDOT),
The first oxidation discoloration layer includes at least one from the group consisting of Prussian blue, lithium nickel oxide, and iridium oxide,
The second oxidation discoloration layer is an electrochromic device comprising at least one from the group consisting of Prussian blue, lithium nickel oxide, and iridium oxide. The method of claim 4, wherein the first reduction discoloration layer receives cations contained in the first electrolyte layer by a driving voltage applied to the first transparent electrode and the second transparent electrode,
The second reduction-chromic layer is an electrochromic device that accommodates positive ions contained in the second electrolyte layer when the external light is incident on the electrochromic unit. The method of claim 4, wherein the first oxidation discoloration layer emits positive ions to the first electrolyte layer by a driving voltage applied to the first transparent electrode and the second transparent electrode,
The second oxidation-chromic layer is an electrochromic device that emits positive ions to the second electrolyte layer when the external light is incident on the electrochromic unit. first substrate;
a first transparent electrode disposed on the first substrate;
a third transparent electrode disposed on the first substrate and formed integrally with the first transparent electrode;
a first reduced discoloration layer disposed on the first transparent electrode;
a second oxidation discoloration layer disposed on the third transparent electrode;
an electrolyte layer covering the first reduction discoloration layer and the second oxidation discoloration layer;
a first oxidized discoloration layer disposed on the electrolyte layer;
a second reduction discoloration layer disposed on the electrolyte layer;
a second transparent electrode disposed on the first oxidation discoloration layer;
a fourth transparent electrode disposed on the second reduction discoloration layer and formed integrally with the second transparent electrode; and
An electrochromic device comprising a second substrate disposed on the second transparent electrode and the fourth transparent electrode. frame;
a window mounted on the frame; and
Comprising an electrochromic element disposed in the window,
The electrochromic device is
Electrochromic part; and
A window device comprising an optoelectronic capping unit that absorbs photoelectrons generated when external light is incident on the electrochromic unit.