TW201341179A - Switchable glass patch, switchable glass and the manufacturing method - Google Patents

Abstract

A switchable glass patch, includes a first glass film, a first transparent conductive film, a second glass film, and a liquid crystal layer. The first glass film and the second glass film have a thickness less than 0.3mm. The first transparent conductive film forms on the first glass film, and the second transparent conductive film form on the second glass film. The liquid crystal layer is deployed between the first transparent conductive and the second transparent conductive film to form a sandwich structure.

Description

Dimming glass patch, dimming glass and manufacturing method thereof

The present invention relates to a glass, and more particularly to a dimming glass patch, a dimming glass, and a method of manufacturing the same.

The PDLC film is a shorthand for a polymer-dispersed liquid crystal film, which is a composite film in which a liquid crystal droplet having an anisotropy is uniformly dispersed in a polymer, and the liquid crystal and the polymer can be controlled by an external electric field. The refractive index relationship causes light scattering and light penetration to the film to control the brightness function. Typical liquid crystals are positive dielectric anisotropy, and their molecular types mainly include Nematic, Smetic, ChCLC, Ferroelectric, Ferroelectric Smetic, and Guest-Host. When there is no applied voltage, the effective refractive index Neff of the liquid crystal and the refractive index Np of the polymer do not match, the incident light senses a lot of interfaces, the light is heavily scattered, and the film forms a scattering state (Off State). When an electric field is generated, the liquid crystal is aligned perpendicularly to the surface of the substrate. Since the refractive index No of the liquid crystal is the same as the refractive index Np of the polymer, the light incident perpendicularly to the surface of the light allows the light to pass through, and the film forms a transparent state (On State). This display mode is called Normal Mode PDLC, and vice versa is Reverse Mode PDLC.

There are many applications for PDLC, one of which is dimming glass. It uses the characteristics of light transmission and opacity of PDLC under different electric fields to control the light quantity, and thus achieves excellent energy saving and carbon saving effect.

The conventional light-adjusting glass structure is as shown in Figs. 1A and 1B, and corresponds to a state in which no power is supplied (Fig. 1A) and power is supplied (Fig. 1B). The structure of the dimming glass, starting from the glass end, comprises: glass 10, adhesive layer 62, second PET (polyethylene terephthalate) layer 22, second transparent conductive film 24, liquid crystal layer 26 (inside The PDLC is included, the first transparent conductive film 23, the first PET layer 21, the adhesive layer 61, and the thin glass layer 30.

In Fig. 1A, the dimming glass is in a non-energized state. At this time, the PDLC 25 therein exhibits a random direction, and therefore, the incident light is easily reflected, and thus the light transmittance is largely lowered. In Fig. 1B, the dimming glass is in a state of being energized, and at this time, the PDLC 25 therein exhibits a fixed direction controlled by voltage, and therefore, incident light is easily penetrated. Through different voltages, the rotation angle of the PDLC can be controlled to adjust the light transmittance.

The dimming glass made of the PET PDLC patch has the advantages of easy production, but has the shortcoming of short service life. The reason is that the PET material is hydrophilic, and the vapor pressure of the water molecules must be controlled during the production of the ITO film; after the PET dimming patch is pasted with the glass, another thin glass layer 30 is attached and the cost is increased. As shown in the structure of Figs. 1A and 1B. In addition, after the long-term direct sunlight, the PET material is prone to qualitative change, which causes color change, which causes the surface of the dimming glass to be spotted. In this way, it will affect the sales and promotion of dimming glass.

Therefore, how to design a dimming glass patch, which has better optical characteristics and no surface spotting, has become the focus of development of PDLC-based dimming glass technology.

In view of the above problems in the prior art, the present invention provides a dimming glass patch comprising: a first glass layer, a first transparent conductive film, a second glass layer, a second transparent conductive film, and a liquid crystal layer. Wherein, the first glass layer and the second glass layer are less than 0.3 mm thick and are flexible. The first transparent conductive film is formed on the first surface of the first glass layer; the second transparent conductive film is formed on the first surface of the second glass layer. The liquid crystal layer is disposed between the first transparent conductive film and the second transparent conductive film, and the first transparent conductive film and the second transparent conductive film face each other.

The invention further provides a dimming glass comprising: a first glass layer, a first transparent conductive film, a second glass layer, a second transparent conductive film, a liquid crystal layer, an adhesive layer and a main glass layer. Wherein, the first glass layer and the second glass layer are less than 0.3 mm thick and are flexible. The first transparent conductive film is formed on the first surface of the first glass layer; the second transparent conductive film is formed on the first surface of the second glass layer. The liquid crystal layer is disposed between the first transparent conductive film and the second transparent conductive film, and the first transparent conductive film and the second transparent conductive film face each other. The adhesive layer is bonded between the second side of the second glass layer and the main glass layer.

The invention further provides a dimming glass, comprising: a first glass layer, a first transparent conductive film, a second glass layer, a second transparent conductive film, a liquid crystal layer, a first adhesive layer, a soft material layer, and a second adhesive Layer and main glass layer. Wherein, the first glass layer and the second glass layer are less than 0.3 mm thick and are flexible. The first transparent conductive film is formed on the first surface of the first glass layer; the second transparent conductive film is formed on the first surface of the second glass layer. The liquid crystal layer is disposed between the first transparent conductive film and the second transparent conductive film, and the first transparent conductive film and the second transparent conductive film face each other. The first adhesive layer is bonded between the second side of the second glass layer and the soft material layer. The second adhesive layer is bonded between the other side of the soft material layer and the main glass layer.

The invention further provides a method for manufacturing a dimming glass patch roll, comprising: forming a polymer liquid crystal layer on a surface of a conductive layer of the first flexible conductive glass layer; and disposing a surface of the conductive layer of the second flexible conductive glass layer The other side of the polymer liquid crystal layer constitutes a flexible polymer liquid crystal glass; a flexible material substrate having a double-sided adhesive layer is adhered to the flexible polymer liquid crystal glass; and the flexible liquid crystal glass is rolled into a roll shape .

The detailed features and advantages of the present invention are set forth in the Detailed Description of the Detailed Description of the <RTIgt; </ RTI> <RTIgt; </ RTI> </ RTI> </ RTI> <RTIgt; The objects and advantages associated with the present invention can be readily understood by those skilled in the art.

The invention uses the ITO tape glass made of flexible glass to be made into a PDLC dimming glass patch and a dimming glass, which can achieve high light transmittance, long life, no spotting, no hydrophilicity and the like.

Please refer to FIGS. 2A and 2B , which are structural diagrams of a specific embodiment of the PDLC dimming glass patch of the present invention, which are respectively a schematic view of the structure before and after the glass is attached.

In FIG. 2A, the dimming glass patch comprises: a first glass layer 71, a first transparent conductive film 23, a second glass layer 72, a second transparent conductive film 24, a liquid crystal layer 26, an adhesive layer 62, and a soft material. Layer 80, adhesive layer 63, and release layer 90. The thickness of the first glass layer 71 and the second glass layer 72 is less than 0.3 mm and is flexible. The first transparent conductive film 23 is formed on the first surface of the first glass layer 71. The second transparent conductive film 24 is formed on the first surface of the second glass layer 72. The liquid crystal layer 26 is disposed between the first transparent conductive film 23 and the second transparent conductive film 24 such that the first transparent conductive film 23 and the second transparent conductive film 24 face each other. The adhesive layer 62 is bonded between the second side of the second glass layer and the soft material layer 80. The adhesive layer 63 is adhered between the soft material layer 80 and the release layer 90. Therefore, the soft material layer 80 is adhered to the adhesive layer 62 to face the second surface of the second glass layer 72, and the soft material layer 80 is adhered to the adhesive layer 63 to face the release layer 90. The release layer 90 is peelable such that the adhesive layer 63 can be bonded to other surfaces, such as glass.

The above structure allows the dimming glass patch to be easily applied and adhered to the main glass surface by the adhesive layer 63.

Wherein, the material of the soft material layer 80 is selected from: PET (polyethylene terephthalate), PC (polycarbonate), PI (polyimine film), PMMA (polymethyl methacrylate) or TAC (triallyl cyanurate).

Figure 2B is a schematic view of the dimming glass patch attached to the main glass. It can be seen that the release layer 90 is replaced by the glass 10.

Please refer to FIGS. 3A-3B , which are structural diagrams of another embodiment of the PDLC dimming glass patch of the present invention, which are respectively a schematic view of the structure before and after the glass is attached.

In FIG. 3A, the dimming glass patch comprises: a first glass layer 71, a first transparent conductive film 23, a second glass layer 72, a second transparent conductive film 24, a liquid crystal layer 26, an adhesive layer 63, and a release form. Layer 90. The thickness of the first glass layer 71 and the second glass layer 72 is less than 0.3 mm and is flexible. The first transparent conductive film 23 is formed on the first surface of the first glass layer 71. The second transparent conductive film 24 is formed on the first surface of the second glass layer 72. The liquid crystal layer 26 is disposed between the first transparent conductive film 23 and the second transparent conductive film 24 such that the first transparent conductive film 23 and the second transparent conductive film 24 face each other. The adhesive layer 63 is adhered between the second glass layer 72 and the release layer 90. Therefore, the second glass layer 72 is adhered to the adhesive layer 63 to face the release layer 90. The release layer 90 is peelable such that the adhesive layer 63 can be bonded to other surfaces, such as glass.

The above structure allows the dimming glass patch to be easily applied and adhered to the main glass surface by the adhesive layer 63.

Figure 3B is a schematic view of the dimming glass patch attached to the main glass. It can be seen that the release layer 90 is replaced by the glass 10.

Please refer to FIG. 4, which is a schematic diagram of the PDLC dimming glass patch of the present invention rolled into a tape form, which is a schematic view of the embodiment of FIG. 2A. The dimming glass patch roll comprises a flexible polymer liquid crystal glass 70, a soft material layer 80 and a release layer 90, wherein portions of the adhesive layer are not depicted. After the structure is fabricated, since the portion of the dimming glass layer is made of flexible glass and has a thickness of less than 0.3 mm, the dimming glass patch of the present invention can be wound into a roll shape, which facilitates processing of the process. And handling after the system.

Next, please refer to FIG. 5 , which is a flowchart of a method for fabricating a PDLC dimming glass patch according to the present invention, which includes the following steps:

Step 102: Form a polymer liquid crystal layer on a surface of the conductive layer of the first flexible conductive glass layer.

Step 104: Configuring a surface of the conductive layer of the second flexible conductive glass layer on the other side of the polymer liquid crystal layer to form a flexible polymer liquid crystal glass.

Step 106: Bonding a flexible material substrate having a double-sided adhesive layer to the flexible polymer liquid crystal glass.

Step 108: Winding the flexible liquid crystal glass into a roll shape.

While the preferred embodiment of the invention has been described above, it is not intended to limit the invention, and it is obvious to those skilled in the art that the invention may be modified and modified without departing from the spirit and scope of the invention. The patent protection scope of the invention is subject to the definition of the scope of the patent application attached to the specification.

10. . . glass

twenty one. . . First PET layer

twenty two. . . Second PET layer

twenty three. . . First transparent conductive film

twenty four. . . Second transparent conductive film

25. . . liquid crystal

26. . . Liquid crystal layer

30. . . Thin glass layer

40. . . power supply

50. . . switch

61. . . Adhesive layer

62. . . Adhesive layer

63. . . Adhesive layer

70. . . Liquid crystal glass

71. . . First glass layer

72. . . Second glass layer

80. . . Soft material layer

90. . . Release layer

1A~1B is a schematic diagram of the structure of a PDLC dimming plastic patch of the prior art and before and after energization;

2A-2B is a structural diagram of a specific embodiment of the PDLC dimming glass patch of the present invention, which is a schematic structural view of the front and the glass after being attached to the glass;

3A-3B are structural diagrams of another specific embodiment of the PDLC dimming glass patch of the present invention, which are respectively a schematic view of the structure before and after the glass is attached;

Figure 4 is a schematic view showing the PDLC dimming glass patch of the present invention rolled into a tape form; and

Figure 5 is a flow chart of the method for fabricating the PDLC dimming glass patch of the present invention.

twenty three. . . First transparent conductive film

twenty four. . . First transparent conductive film

25. . . PDLC

26. . . Liquid crystal layer

40. . . power supply

50. . . switch

62. . . Adhesive layer

63. . . Adhesive layer

71. . . First glass layer

72. . . Second glass layer

80. . . Soft material layer

90. . . Release layer

Claims (9)

A dimming glass patch comprising: a first glass layer having a thickness of less than 0.3 mm and being flexible; a first transparent conductive film formed on a first side of the first glass layer; and a second glass layer The second transparent conductive film is formed on the first surface of the second glass layer; and a liquid crystal layer is disposed on the first transparent conductive film and the second transparent conductive film. The first transparent conductive film and the second transparent conductive film face each other. The dimming glass patch of claim 1, further comprising: an adhesive layer bonded to the second surface of the second glass layer; and a release layer bonded to the adhesive layer and the second The second side of the glass layer faces, the release layer being peelable to adhere the adhesive layer to other surfaces. The dimming glass patch of claim 1, further comprising: a first adhesive layer bonded to the second surface of the second glass layer; and a soft material layer bonded to the first adhesive layer Facing the second side of the second glass layer. The dimming glass patch of claim 3, wherein the material of the soft material layer is selected from the group consisting of PET (polyethylene terephthalate), PC (polycarbonate), and PI (polyimine film). ), PMMA (polymethyl methacrylate) or TAC (triallyl cyanurate). The dimming glass patch of claim 3, further comprising: a second adhesive layer adhered to the other side of the soft material layer; and a release layer bonded to the second adhesive layer The other side of the layer of soft material faces, the release layer being peelable to adhere the second adhesive layer to other surfaces. A dimming glass comprising: a first glass layer having a thickness of less than 0.3 mm and being flexible; a first transparent conductive film formed on a first side of the first glass layer; and a second glass layer having a thickness a second transparent conductive film is formed on the first surface of the second glass layer; a liquid crystal layer is disposed between the first transparent conductive film and the second transparent conductive film, and The first transparent conductive film and the second transparent conductive film face each other; a main glass layer; and an adhesive layer bonded between the second surface of the second glass layer and the main glass layer. A dimming glass comprising: a first glass layer having a thickness of less than 0.3 mm and being flexible; a first transparent conductive film formed on a first side of the first glass layer; and a second glass layer having a thickness a second transparent conductive film is formed on the first surface of the second glass layer; a liquid crystal layer is disposed between the first transparent conductive film and the second transparent conductive film, and The first transparent conductive film and the second transparent conductive film face each other; a soft material layer; a main glass layer; a first adhesive layer bonded to the second surface of the second glass layer and the soft material Between the layers; and a second adhesive layer bonded between the other side of the layer of soft material and the main glass layer. The dimming glass according to claim 7, wherein the material of the soft material layer is selected from the group consisting of PET (polyethylene terephthalate), PC (polycarbonate), PI (polyimine film), PMMA (polymethyl methacrylate) or TAC (triallyl cyanurate). A method for manufacturing a dimming glass patch roll, comprising: forming a polymer liquid crystal layer on a surface of a conductive layer of a first flexible conductive glass layer; and disposing a surface of a conductive layer of a second flexible conductive glass layer The other side of the polymer liquid crystal layer constitutes a flexible polymer liquid crystal glass; a plastic substrate having a double-sided adhesive layer is adhered to the flexible polymer liquid crystal glass; and the flexible liquid crystal glass is wound into a roll Cylindrical.