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CN-122018188-A - Light-adjusting laminated glass and vehicle

CN122018188ACN 122018188 ACN122018188 ACN 122018188ACN-122018188-A

Abstract

The application provides a light-adjusting laminated glass and a vehicle, wherein the light-adjusting laminated glass comprises an outer glass layer, an outer bonding layer, an optical element layer, an inner bonding layer and an inner glass layer which are sequentially laminated. The optical element layer comprises a dimming function layer, a first composite film layer and a second single-layer flexible substrate layer, wherein the first composite film layer and the second single-layer flexible substrate layer are respectively laminated on two sides, the second single-layer flexible substrate layer is arranged towards the glass concave surface of the side where the inner glass layer is located, the first composite film layer comprises a functional adhesive layer and a first flexible substrate layer which are laminated, and the thickness of the second single-layer flexible substrate layer is larger than that of the first flexible substrate and larger than or equal to that of the functional adhesive layer. The thickness configuration of the second single-layer flexible substrate layer is optimized, so that the optical performance and mechanical stability of the laminated glass can be effectively improved, the technical problems that the existing light-adjusting laminated glass is easy to generate stress concentration and optical defects in bending application are solved, and the light-adjusting laminated glass is suitable for application scenes such as vehicles and the like which need light-adjusting functions.

Inventors

  • WANG YU
  • LIN SHOU
  • ZHENG GUOXIN
  • FENG TAO

Assignees

  • 福耀玻璃工业集团股份有限公司

Dates

Publication Date
20260512
Application Date
20260214

Claims (11)

  1. 1. The light-adjusting laminated glass comprises an outer glass layer, an outer bonding layer, an optical element layer, an inner bonding layer and an inner glass layer which are sequentially laminated, wherein the optical element layer comprises a light-adjusting function layer, a first composite film layer and a second single-layer flexible substrate layer which are respectively laminated on two sides, The second single-layer flexible substrate layer is configured to be arranged towards the concave glass surface of the side where the inner glass layer is located; The first composite film layer comprises a functional adhesive layer and a first flexible substrate layer which are arranged in a laminated mode; The thickness of the second single-layer flexible substrate layer is larger than that of the first flexible substrate and larger than or equal to that of the functional adhesive layer.
  2. 2. The dimmed laminated glass according to claim 1, wherein the first composite film layer has a haze of less than or equal to 5% in the visible light region, and the second single-layer flexible substrate layer has a visible light transmittance of greater than or equal to the visible light transmittance of the first composite film layer.
  3. 3. The light-adjusting laminated glass according to claim 1, wherein the first composite film layer, the light-adjusting functional layer and the second single-layer flexible substrate layer form a light-adjusting area together, and the maximum arc depth per meter in the X/Y direction of the light-adjusting area is smaller than or equal to 30mm/m.
  4. 4. The light-adjusting laminated glass according to claim 1, wherein the thickness of the functional laminated layer is less than or equal to 0.3 mm, and the functional laminated layer is a polarizer or a polymer film.
  5. 5. The dimmed laminated glass according to claim 1, wherein when the first flexible substrate layer and the second single flexible substrate layer are the same material, the thickness of the second single flexible substrate layer is determined by the following formula: ; In the above formula, T 1 is the thickness of the functional patch layer, T 2 is the thickness of the first flexible substrate layer, T 3 is the thickness of the second single flexible substrate layer, k=e 1 / E 3 ,E 1 is the average elastic modulus of the functional patch layer, E 3 is the elastic modulus of the second single flexible substrate layer, and 0 < k is less than or equal to 1.
  6. 6. The dimmed laminated glass according to claim 5, wherein the first flexible substrate layer and the second single flexible substrate layer are each a polyethylene terephthalate layer, a cellulose triacetate layer, or a polyimide layer.
  7. 7. The light-adjusting laminated glass according to claim 1, wherein the functional paste layer has a thickness of 0.05mm to 0.25mm.
  8. 8. The dimming laminated glass as claimed in claim 1, wherein the dimming functional layer is a liquid crystal dimming layer, a light valve layer, a polymer dispersed liquid crystal layer, or an electrochromic layer.
  9. 9. A light-adjusting laminated glass according to any one of claims 1 to 8, wherein the first composite film layer comprises a plurality of sub-functional layers arranged in sequence in a lamination direction, and adjacent ones of the sub-functional layers are bonded by an adhesive layer.
  10. 10. The light-adjusting laminated glass according to claim 9, wherein the total number of the plurality of sub-functional layers is not less than 2 and not more than 10.
  11. 11. A vehicle, characterized in that it is equipped with at least one sheet of the dimmed laminated glass as claimed in any one of claims 1 to 10.

Description

Light-adjusting laminated glass and vehicle Technical Field The application relates to the technical field of laminated glass, in particular to light-adjusting laminated glass and a vehicle. Background Along with the rapid development of the automobile industry and the continuous improvement of the requirements of consumers on comfort, the light-adjusting laminated glass is widely focused in applications such as vehicle skylights and side windows as an intelligent glass product capable of adjusting light transmittance according to requirements. The light-adjusting laminated glass is generally composed of an outer glass layer, an inner glass layer and an optical element layer positioned between the outer glass layer and the inner glass layer, and the light transmittance adjusting function is realized through voltage control. The light-adjusting laminated glass mainly adopts the structure shown in fig. 1, and comprises an outer glass layer 1, an outer bonding layer 2, an optical element layer 3, an adhesive edge-repairing layer 4, an inner bonding layer 5 and an inner glass layer 6 which are laminated from top to bottom, wherein the optical element layer is a light-adjusting film layer of a flexible substrate and can be formed by combining 1 layer or 2 layers of films and more than one layer of film. The outer/inner adhesive layer (2/5) is as large as glass, and the adhesive repair layer (4) fills the region of the optical element layer (3) smaller than the composite glass product and has the same height as the optical element layer (3). The composition of the conventional optical element layers is shown in fig. 2, the outer PET layer 1, the liquid crystal dimming layer 2 and the inner PET layer 3 are sequentially stacked from top to bottom, the upper and lower sequences can be reversed, the composition of one type of optical element layers is shown in fig. 3, the outer adhesive layer 1, the adhesive layer 2, the outer PET layer 3, the liquid crystal dimming layer 4 and the inner PET layer 5 are sequentially stacked from top to bottom, the upper and lower sequences can be reversed, the outer adhesive layer can be a flexible substrate such as a polaroid or PET, and similar cases exist in the CN116540439A embodiment. When the dimming film of fig. 2 is adopted to compound the dimming glass, the dimming skylight with the maximum arc depth of each meter in the X/Y direction is less than or equal to 30mm/m is difficult to wrinkle, but when the dimming film of fig. 3 is adopted to compound the dimming glass, the thickness of the outer adhesive layer 1, the thickness of the bonding layer 2 and the thickness of the outer PET layer 3 are equal to the thickness of the outer PET layer 1 in fig. 2, and the dimming area X/Y direction is also wrinkled when the maximum arc depth of each meter is 25 mm/m. The generation of wrinkles causes various problems including firstly, obvious moire on the appearance, serious influence on the aesthetic property of the product, and uneven light transmittance due to the difference of optical properties, and even more serious, glare and possible structural problems such as delamination of the film material. These defects not only seriously affect the use experience of users, but also limit the wide application of the multi-layer flexible substrate dimming film in the large-arc deep dimming skylight, and become an important technical bottleneck for restricting the further development and popularization of the technology. Disclosure of Invention The application aims to provide light-adjusting laminated glass and a vehicle, which solve the problem of wrinkling of the existing light-adjusting laminated glass when the existing light-adjusting laminated glass is applied to a vehicle skylight with large curvature and realize the stability of a multi-layer flexible substrate light-adjusting film in large arc depth application. The dimming laminated glass comprises an outer glass layer, an outer bonding layer, an optical element layer, an inner bonding layer and an inner glass layer which are sequentially laminated, wherein the optical element layer comprises a dimming function layer, a first composite film layer and a second single-layer flexible substrate layer which are respectively laminated on two sides, the second single-layer flexible substrate layer is configured to be arranged towards a glass concave surface on the side where the inner glass layer is located, the first composite film layer comprises a functional adhesive layer and a first flexible substrate layer which are laminated, and the thickness of the second single-layer flexible substrate layer is larger than that of the first flexible substrate and larger than or equal to that of the functional adhesive layer. In some embodiments of the present application, the first composite film layer has a haze of less than or equal to 5% in the visible light region, and the second single-layer flexible substrate layer has a visible light trans