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CN-122003636-A - Single-side electrode intelligent PDLC dimming film

CN122003636ACN 122003636 ACN122003636 ACN 122003636ACN-122003636-A

Abstract

The invention discloses an intelligent film (10) comprising a first conductive layer (1), a second conductive layer (2) and a cured polymer dispersed liquid crystal material layer (3) arranged between the conductive layers (1, 2). The first portion (11) of the first conductive layer comprises a width (W), the second portion (12) of the first conductive layer (1) comprises the same length as the first portion (11) of the first conductive layer (1), and a width less than one fifth of the width of the first portion (11) of the first conductive layer (1). An electrode (6) is arranged on the second part of each dimming part (5). The second portion (22) of the second conductive layer (2) has the same width as the first portion (21) of the second conductive layer (2) and has a first sub-portion (23) and a second sub-portion (24) having an irregular length. The smart film further comprises a bus bar (7) mounted on the second subsection, the bus bar covering an area of the second subsection having a length less than the length of the first subsection.

Inventors

  • M. Mescata Mamalek

Assignees

  • 向往玻璃有限公司

Dates

Publication Date
20260508
Application Date
20250407
Priority Date
20240408

Claims (8)

  1. 1. An intelligent film (10) comprises a first conductive layer (1), a second conductive layer (2) and a cured polymer dispersed liquid crystal material layer (3), wherein, The first conductive layer (1) comprises a first portion (11) and a second portion (12); the second conductive layer (2) comprises a first portion (21) and a second portion (22); The cured layer of polymer dispersed liquid crystal material (3) is disposed between the first portion (11) of the first conductive layer and the first portion (21) of the second conductive layer; Wherein, the The first conductive layer (1) comprises etching lines (4), each etching line (4) extending in both a first portion (11) and a second portion (12) of the first conductive layer (1), wherein the etching lines (4) divide the first conductive layer into a plurality of dimming portions (5), wherein each dimming portion (5) has a first portion and a second portion, the first portion being a portion located in the first portion (11) of the first conductive layer (2), the second portion being a portion located in the second portion (12) of the first conductive layer (1); -the first portion (11) of the first conductive layer comprises a width (W) measured along a first direction (d 1) and a length (L) measured along a second direction (d 2) perpendicular to the first direction; The second portion (12) of the first conductive layer (1) comprises the same length as the first portion (11) of the first conductive layer (1) and a width less than one fifth of the width of the first portion (11) of the first conductive layer (1); the smart film (10) further comprises an electrode (6), the electrode (6) being arranged directly or through the intervention of a conductive element on a second portion of each dimming portion (5); -the first portion (21) of the second conductive layer (2) has the same width and the same length as the first portion (11) of the first conductive layer (1); -the second portion (22) of the second conductive layer (2) has the same width as the first portion (21) of the second conductive layer (2) and has a first sub-portion (23) and a second sub-portion (24); The length of the second sub-portion (24) is not constant, but varies between a maximum value, which is less than one tenth of the length of the first portion of the second conductive layer, and a minimum value, which is greater than zero and less than 75% of the maximum value; The smart film further comprises a bus bar (7) mounted on the second subsection, the bus bar (7) covering an area of the second subsection having a length less than the length of the first subsection.
  2. 2. The smart film (10) of claim 1, further comprising a polymer element deposited on the bus bar, the polymer element covering edges of the bus bar that are at least 2 millimeters on both sides in the second direction (d 2).
  3. 3. The smart film (10) of any one of the preceding claims, wherein the smart film (10) further comprises a conductive paste element (9) deposited on the second portion of each dimming portion (5), the conductive paste element (9) being interposed between each second portion and the respective electrode (6).
  4. 4. The smart film (10) of any of the preceding claims, wherein the first sub-portion (23) of the second portion (22) of the second conductive layer (2) has a surface area that is greater than the second sub-portion (24) of the second portion (22) of the second conductive layer (2).
  5. 5. The smart film (10) of any of the preceding claims, wherein the second sub-portion (24) of the second portion of the second conductive layer comprises a plurality of notches (8), wherein each notch cuts into depth up to 50% of the length of the second sub-portion of the second conductive layer.
  6. 6. The smart film (10) of any preceding claim, wherein the second sub-portion of the second conductive layer comprises a plurality of serrations.
  7. 7. The smart film (10) of any preceding claim, wherein the conductive paste element comprises silver paste.
  8. 8. Intelligent film (10) according to any of the previous claims, wherein the etched line (4) is parallel to the first direction (d 1).

Description

Single-side electrode intelligent PDLC dimming film Technical Field The invention belongs to the technical field of intelligent films. More particularly, the present invention relates to a dimming film, and a method and apparatus for manufacturing the same. Background In some industrial fields, such as the automotive industry, there is a great need for panoramic sunroofs equipped with smart glass, in particular with a Polymer Dispersed Liquid Crystal (PDLC) layer. In particular, the type of dimming film to which the present invention relates includes a first conductive layer (e.g., indium tin oxide material deposited on a polyethylene terephthalate sheet, referred to as ITO PET), a second conductive layer (e.g., a second layer of ITO PET), and a cured PDLC material encapsulated between the two layers of ITO PET. The first layer of ITO PET is divided into segments by etching, while the second layer of ITO PET is the common electrode. The fact that these dimming films have two conductive layers generally means that access is required from both sides in order to provide power and control for these electrodes. This is sometimes undesirable because the installation of these components requires clean, slim connections. The present invention provides a solution to these problems by a smart dimming film that is capable of providing a connection for two electrodes from the same side. Disclosure of Invention Unless otherwise defined, all terms (including technical and scientific terms) used herein should be interpreted according to their ordinary meaning in the art. It will be further understood that terms, such as those used herein, should be interpreted according to their ordinary meaning in the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein. In this document, the terms "comprises" and its derivatives (e.g., "comprising" etc.) are not to be construed according to their exclusive meaning, i.e., they are not to be construed to exclude that the elements, steps, etc. described and defined may include additional elements. A first object of the present invention relates to a smart film comprising a first conductive layer, a second conductive layer and a cured polymer dispersed liquid crystal material layer, wherein The first conductive layer includes a first portion and a second portion; The second conductive layer includes a first portion and a second portion; a cured layer of polymer dispersed liquid crystal material is disposed between the first portion of the first conductive layer and the first portion of the second conductive layer; Wherein, the The first conductive layer includes etch lines, each extending in a first portion and a second portion of the first conductive layer, wherein the etch lines divide the first conductive layer into a plurality of dimming portions, each dimming portion having a first portion and a second portion, the first portion being a portion located in the first portion of the first conductive layer, the second portion being a portion located in the second portion of the first conductive layer; the first portion of the first conductive layer includes a width measured in a first direction and a length measured in a second direction perpendicular to the first direction; The second portion of the first conductive layer has the same length as the first portion of the first conductive layer and a width less than one fifth of the width of the first portion of the first conductive layer; The smart film further comprises an electrode arranged directly or through the intervention of a conductive element on the second portion of each dimming portion (5); The first portion of the second conductive layer has the same width and the same length as the first portion of the first conductive layer; the second portion of the second conductive layer has the same width as the first portion of the second conductive layer and has a first sub-portion and a second sub-portion; the length of the second sub-portion is not constant but varies between a maximum value that is less than one tenth of the length of the first portion of the second conductive layer and a minimum value that is greater than zero and less than 75% of the maximum value; the smart film further includes a bus bar mounted on the second sub-portion, the bus bar covering an area of the second sub-portion having a length less than a length of the first sub-portion. The invention provides an intelligent film with three main layers, namely a first conductive layer, a second conductive layer and a PDLC layer arranged between the first conductive layer and the second conductive layer. The first conductive layer has a first width and a first length, and the second conductive layer has a second width and a second length. The second length is greater than the first length and the second width is less than the first width. The additional width of the first conductive layer is due to the pr