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Light control film and laminated glass

A technology of light-adjusting film and laminated body, applied in the field of light-adjusting film, can solve the problems of reduced liquid crystal orientation, reduced transmittance, etc., and achieve the effects of avoiding the reduction of transmittance, fully stable driving, and avoiding the reduction of appearance quality.

Pending Publication Date: 2018-08-28
DAI NIPPON PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are problems in that the transmittance decreases, the orientation of the liquid crystal decreases, and the light diffracted by the spacers is seen.

Method used

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  • Light control film and laminated glass
  • Light control film and laminated glass
  • Light control film and laminated glass

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach 〕

[0036] 〔Laminated glass〕

[0037] figure 1 It is a sectional view showing the laminated glass according to the first embodiment of the present invention. This laminated glass 1 is, for example, a laminated glass applied to a window of a vehicle, and is configured by sandwiching a light-adjusting film 10 between plate glasses 2 and 3 via intermediate layers 4 and 5 , respectively. Here, various materials applicable to this type of laminated glass can be widely used for the plate glasses 2 and 3 . In addition, the interlayers 4 and 5 are structures that function as adhesive layers between the light-adjusting film 10 and the flat glasses 2 and 3, and various structures applicable to this type of laminated glass can be widely adopted. It functions as an infrared shielding material.

[0038] With regard to the laminated glass 1, after the interlayers 4, 5 are respectively provided in the flat glasses 2, 3, and laminated with the light-adjusting film 10, heating and pressure are ...

Embodiment 1

[0072] In Example 1, spacers 24 were arranged with a diameter of 9 μm and a height of 6 μm at a pitch of 110 μm, and the occupancy rate of the spacers was set to 0.5%. In Example 2, the spacers 24 were arranged with a diameter of 27 μm and a height of 6 μm at a pitch of 230 μm, and the occupancy rate of the spacers was set to 1%. In Example 3, the spacers 24 were arranged with a diameter of 28 μm and a height of 6 μm at a pitch of 110 μm, and the occupancy rate of the spacers was set to 5%. In Example 4, spacers 24 were arranged with a diameter of 35 μm and a height of 6 μm at a pitch of 110 μm, and the occupancy rate of the spacers was set to 8%. In Example 5, the spacers 24 were arranged with a diameter of 39 μm and a height of 6 μm at a pitch of 110 μm, and the occupancy rate of the spacers was set to 10%.

[0073] In these Examples 1 to 5, neither collapse of the spacer was observed nor a site where the tip of the spacer 24 penetrated into the opposing surface was found, ...

no. 2 Embodiment approach 〕

[0094] Figure 7 It is a cross-sectional view showing the light-adjusting film 100 of the second embodiment. The second embodiment differs from the first embodiment in that the liquid crystal layer 114 of the second embodiment is a guest-host liquid crystal layer 114 in which guest-host liquid crystal molecules 114A and dichroic dyes are mixed.

[0095] In the second embodiment, the linear polarizing plate can be omitted. The so-called guest-host mode refers to a method in which the dichroic dye 114B is mixed in the guest-host liquid crystal molecules 114A, and the dichroic dye 114B is moved along with the movement of the guest-host liquid crystal molecules 114A, thereby controlling the transmitted light of light. Way.

[0096] in addition, Figure 7 and figure 2 Compared to the same figure except that no linear polarizer is provided, the pair with figure 2 Same component callout as with figure 2 The same reference numerals are used, and explanations are omitted.

[...

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Abstract

The purpose of the present invention is to, for example, even when a light control film is used as an intermediate material of laminated glass, enable effective avoidance of a reduction in external appearance quality, and sufficiently stable driving, and prevent diffracted light from being discerned by effectively avoiding a reduction in transmittance and a deterioration in liquid crystal alignment. A light control film (1) is provided with: a first laminate (13) in which an alignment layer (23B) is provided; a second laminate (12) in which an alignment layer (23A) is provided; a liquid crystal layer (14) which is sandwiched between the first laminate (13) and the second laminate (12) and contains liquid crystal molecules; a spacer (24) which is disposed in the liquid crystal layer (14) tohold the thickness of the liquid crystal layer (14); and electrodes (22B, 22A) provided in the first laminate (13) and / or the second laminate (12), and controls transmitted light by controlling the alignment of the liquid crystal molecules by driving by the electrodes (22B, 22A), wherein the proportion of an area occupied by the spacer (2) per unit area when the light control film (1) is viewed from the front in a light controllable-region of the liquid crystal layer is 0.1-10% inclusive.

Description

technical field [0001] The present invention relates to, for example, a light-adjusting film that can be used for electronic blinds and the like that can be pasted on a window to control transmission of external light, and a laminated glass using the light-adjusting film. Background technique [0002] Conventionally, various methods related to light-adjusting films that can be used for, for example, electronic blinds that are pasted on windows to control transmission of external light have been proposed (Patent Documents 1 and 2). As one of such dimming films, there is a structure using liquid crystals. In this light-adjusting film using liquid crystals, a liquid crystal cell is produced by sandwiching a liquid crystal material between transparent plates for forming transparent electrodes, and the liquid crystal cell is produced by sandwiching the liquid crystal cell between linear polarizers. Therefore, in the light-adjustable film, by changing the electric field applied t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13G02F1/1339
CPCG02F1/13392G02F1/13394G02F1/13725G02F1/1337G02F1/1339G02F1/13398B60J1/001B60J3/04E06B3/6722E06B9/24E06B2009/2417E06B2009/2464
Inventor 三浦启介涂师勇辅萩原裕介
Owner DAI NIPPON PRINTING CO LTD
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