WO2023092770A1

WO2023092770A1 - Surface polarizer and smart lcd sunglasses

Info

Publication number: WO2023092770A1
Application number: PCT/CN2021/139630
Authority: WO
Inventors: 杨晓东; 吴仕坤
Original assignee: 江门亿都半导体有限公司
Priority date: 2021-11-25
Filing date: 2021-12-20
Publication date: 2023-06-01
Also published as: CN216956554U

Abstract

A surface polarizer (10) and smart LCD sunglasses. The surface polarizer (10) comprises: a super retardation film (120), which is used for converting incident light into elliptically polarized light, the super retardation film (120) having a front surface and a back surface; a protective film (110), which is connected to the front surface of the super retardation film (120); a linear polarization light conversion layer (130), which is connected to the back surface of the super retardation film (120) and is used for converting the elliptically polarized light into linearly polarized light; and a release film (140) connected to the linear polarization light conversion layer (130). The super retardation film (120) is additionally provided in front of the linear polarization light conversion layer (130), and by means of the bidirectional conversion property of the super retardation film (120), elliptically polarized light reflected by a mirror can enter the linear polarization light conversion layer (130) still in the form of elliptically polarized light after passing through the super retardation film (120), so that when a user wears smart LCD sunglasses equipped with the surface polarizer (10) and looks in the mirror, the user can feel appearance transition between a bright state and a dark state of the lenses, thereby improving user experience.

Description

A face polarizer and smart LCD sunglasses

technical field

The utility model relates to the technical field of sunglasses, in particular to a face polarizer and intelligent LCD sunglasses.

Background technique

At present, for the smart LCD sunglasses that have been born, this kind of sunglasses uses liquid crystal LCD technology to achieve the function of rapid color change, and can automatically switch between the dark state and the bright state according to the intensity of the ambient light, and because of the use of The polarizer of this material with a 1/4 wave plate can make the smart LCD sunglasses watch the display at any angle without the problem of not being able to see the displayed content.

However, there is a problem in this kind of smart LCD sunglasses, that is, whether the glasses are in a bright state or in a dark state, when wearing such glasses and looking in the mirror, they will appear in a black state in the mirror, causing the wearer to experience this kind of sunscreen. When wearing glasses, you cannot feel the automatic switching effect of the glasses from the bright state to the dark state, which affects the user experience.

Utility model content

The purpose of the utility model is to provide a face polarizer and intelligent LCD sunglasses, aiming at solving the problem in the prior art that the LCD sunglasses cannot feel the appearance transition between the bright state and the dark state of the lens when looking in the mirror.

In order to achieve the above object, the technical scheme of the present invention has:

The utility model proposes a surface polarizer, which is applied to sunglasses, comprising: a super-complex deflection polyester film, which is used to convert incident light into elliptically polarized light; the super-complex deflection polyester film has a front surface and a reverse surface; A protective film, which is connected to the front side of the super birefringent polyester film; a linearly polarized light conversion layer, which is connected to the reverse side of the super birefringent polyester film, for converting elliptically polarized light into linearly polarized light; type film, which is connected with the linearly polarized light conversion layer.

Compared with the prior art, the utility model adds a super-complex deflection polyester film before the linear polarized light is converted into a layer, and utilizes the two-way conversion of the super-complex deflection polyester film, so that the elliptically polarized light reflected by the mirror can pass through the super complex After deflecting the polyester film, the elliptically polarized light is still incident into the linearly polarized light conversion layer, so that the user can feel the bright state and dark state of the lens when wearing smart LCD sunglasses equipped with the polarizer and looking in the mirror. Appearance transformation to improve user experience.

In a preferred embodiment, the linearly polarized light conversion layer includes: a PVA film; a front protective film, which is arranged between the PVA film and the super birefringent polyester film; a rear protective film, which is connected to the The release film is connected by an adhesive.

The utility model also proposes a kind of intelligent LCD sun glasses, comprising a liquid crystal lens and a picture frame; A bottom polarizer is provided on the reverse side of the lens, and the second absorption axis of the bottom polarizer is perpendicular to the first absorption axis of the surface polarizer.

In a preferred embodiment, the liquid crystal lens further includes a surface substrate glass, a bottom substrate glass, and a liquid crystal cell, and the liquid crystal cell is arranged between the surface substrate glass and the bottom substrate glass; the surface polarizer It is connected with the front surface of the surface substrate glass by an adhesive.

In a preferred embodiment, the picture frame is provided with a photosensitive module, which is used to output voltage signals of different sizes according to the light intensity; the picture frame is also provided with a control module, which is electrically connected with the photosensitive module, It is used to generate an adjustment signal according to the voltage signal; the control module is also electrically connected to the liquid crystal cell, and is used to adjust its light transmittance according to the received adjustment signal.

Description of drawings

The drawings described here are used to provide a further understanding of the utility model and constitute a part of the application. The schematic embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute improper limitations to the utility model. In the attached picture:

Figure 1 is a schematic diagram of smart LCD sunglasses;

2 is a schematic diagram of a liquid crystal lens;

Fig. 3 is the schematic diagram of planar polarizer;

Fig. 4 is the schematic diagram that the ellipse reflected light of mirror is injected into super-complex polyester film;

Figure 5 is a schematic diagram of the incident light passing through the liquid crystal lens to the mirror

Fig. 6 is a schematic diagram of the elliptical reflected light of the mirror entering the 1/4 wave plate in the prior art.

Explanation of reference signs:

10—plane polarizer, 110—protective film, 120—super birefringent polyester film, 130—linear polarization conversion layer, 131—front protective film, 132—PVA film, 133—rear protective film, 140—release film , 20-surface substrate glass, 30-liquid crystal cell, 40-bottom substrate glass, 50-bottom polarizer, 60-photosensitive module, 9-mirror, 91-1/4 wave plate.

Detailed ways

In order to better illustrate the utility model, the utility model will be described in further detail below with reference to the accompanying drawings.

It should be clear that the described embodiments are only some of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the embodiments of the present application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the embodiments of the present application.

The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the embodiments of the present application. The singular forms "a", "said" and "the" used in the embodiments of this application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present application as recited in the appended claims. In the description of the present application, it should be understood that the terms "first", "second", "third", etc. are only used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence, nor can they be Read as indicating or implying relative importance. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.

In addition, in the description of the present application, unless otherwise specified, "plurality" means two or more. "And/or" describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B may indicate: A exists alone, A and B exist simultaneously, and B exists independently. The character "/" generally indicates that the contextual objects are an "or" relationship.

As shown in Figures 5 and 6, in the prior art, smart LCD sunglasses equipped with a 1/4 wave plate use the optical rotation of the 1/4 wave plate 91 to convert the linearly polarized light of the display screen into elliptically polarized light , so that when viewing the display at any angle, there will be no inability to see the displayed content. However, there is a problem with this kind of smart LCD sunglasses, because the 1/4 wave plate 91 only has one-way conversion, that is, no matter whether the smart LCD sunglasses are in the bright state or in the dark state, when wearing such glasses and looking in the mirror, no matter the smart The glasses are in the dark state and the bright state, and they all appear black in the mirror, so that the user cannot see the appearance of the LCD sunglasses in the bright state when looking in the mirror, which affects the user experience.

For this reason, the utility model proposes a surface polarizer 10, which is applied to sunglasses, so that the elliptically polarized light reflected by the mirror can still enter the linearly polarized light in the form of elliptically polarized light after passing through the super birefringent polyester film 120. In the light conversion layer 130 , the smart LCD sunglasses equipped with the polarizer 10 can feel the appearance conversion between the bright state and the dark state of the lens when looking in the mirror.

Specifically, as shown in FIGS. 1 to 4 , the surface polarizer 10 includes: a super-birefringent polyester film 120 for converting incident light into elliptically polarized light; the super-birefringent polyester film 120 has a front surface and the reverse side; protective film 110, which is connected to the front side of the super birefringent polyester film 120; linearly polarized light conversion layer 130, which is connected to the reverse side of the super birefringent polyester film 120, for elliptically polarized light converted into linearly polarized light; the release film 140 is connected with the linearly polarized light converting layer 130 .

Compared with the prior art, the utility model adds a super-complex refraction polyester film 120 (that is, SRF film) before the linear polarized light is converted into a layer, and utilizes the two-way conversion of the super-complex refraction polyester film 120 to make the ellipse reflected by the mirror Polarized light can enter the linearly polarized light conversion layer 130 in the form of elliptically polarized light after passing through the super-birefringent polyester film 120, so that when the user wears smart LCD sunglasses equipped with the polarizer 10 and looks in the mirror, he can Feel the appearance transition between the bright state and dark state of the lens, and clearly see the appearance of the LCD sunglasses when you are wearing the bright state, which improves the user experience.

The working principle of the present utility model is that, as shown in Figure 4, the elliptically polarized light reflected by the mirror is still incident in the linearly polarized light conversion layer in the form of elliptically polarized light after passing through the super-complex refraction polyester film, and is converted into linearly polarized light. Instead of the elliptically polarized light reflected by the mirror in the prior art, it disappears after passing through the 1/4 wave plate.

In one embodiment, the linearly polarized light conversion layer 130 includes: a PVA film 132; a front protective film 131 disposed between the PVA film 132 and the super birefringent polyester film 120; a rear protective film 133, which is connected with the release film 140 through an adhesive. The utility model prevents the PVA film 132 from occurring by compounding a front protective film 131 and a rear protective film 133 with high light transmittance, good water resistance and certain mechanical strength on both sides of the PVA film 132. Moisture absorption and deterioration. Wherein, the front protective film and the rear protective film are made of TAC triacetyl cellulose.

It should be noted that the PVA film is made of polyvinyl alcohol.

The utility model also proposes a kind of intelligent LCD sun glasses, comprising a liquid crystal lens, a picture frame and the above-mentioned surface polarizer 10, the surface polarizer 10 is arranged on the front side of the liquid crystal lens, and the reverse side of the liquid crystal lens is provided with a bottom The polarizer 50 , the second absorption axis of the bottom polarizer 50 is set at a certain angle (0°-90°) relative to the first absorption axis of the surface polarizer 10 . Wherein, the first absorption axis is arranged parallel to the horizontal central axis of the liquid crystal cell 30 .

Specifically, since the liquid crystal cell 30 of the liquid crystal lens has optical activity, the second absorption axis passing through the bottom polarizer 50 is set at an angle (0°-90°) relative to the first absorption axis of the surface polarizer 10, In order to allow the light emitted by the liquid crystal cell 30 to enter human eyes.

In one embodiment, the liquid crystal lens further includes a surface substrate glass 20 , a bottom substrate glass 40 and a liquid crystal cell 30 , and the liquid crystal cell 30 is arranged between the surface substrate glass 20 and the bottom substrate glass 40 ; The surface polarizer 10 is connected to the front surface of the surface substrate glass 20 through an adhesive. In the present invention, after the release film 140 is torn off, the surface polarizer 10 is bonded to the front of the surface substrate glass 20 by using the adhesive of the surface polarizer 10 to realize the assembly of the surface polarizer 10 on the liquid crystal lens.

In one embodiment, the picture frame is provided with a photosensitive module 60, which is used to output voltage signals of different magnitudes according to the light intensity; the picture frame is also provided with a control module, which is electrically connected with the photosensitive module 60 , used to generate an adjustment signal according to the voltage signal; the control module is also electrically connected to the liquid crystal cell 30, and used to adjust its light transmittance according to the received adjustment signal.

Wherein, the adjustment signal is a low-frequency AC voltage signal, and the smart LCD sunglasses output voltage signals of different sizes through the photosensitive module 60 according to the light intensity, and the control module generates low-frequency AC voltages of different voltage sizes according to the voltage of the voltage signal signal, the liquid crystal lens changes its light transmittance according to the voltage of the low-frequency AC voltage signal, so as to realize the gradual change of the light transmittance of the sunglasses, so that the user can better watch the content on the display. It should be noted that the present invention does not limit the collection and processing methods of the voltage signal and the adjustment signal, and other known processing methods in the art may also be used.

In describing the present invention, it should be understood that the terms "vertical", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top" , "bottom", "inner", "outer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying The device or element referred to must have a specific orientation, be constructed and operated for a specific orientation, and thus cannot be construed as limiting the protection content of the present utility model.

If words such as "first" and "second" are used herein to define components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of describing the utility model and simplifying Description, unless otherwise stated, the above words have no special meaning.

The utility model is not limited to the above-mentioned embodiment, if the various modifications or deformations of the utility model do not depart from the spirit and scope of the utility model, if these changes and deformations belong to the claims of the utility model and within the equivalent technical scope, Then the utility model is also intended to include these modifications and variations.

Claims

A surface polarizer, which is applied to sunglasses, is characterized in that it comprises:

The super-birefringent polyester film is used to convert incident light into elliptically polarized light; the super-birefringent polyester film has a front side and a back side;

Protective film, it is connected with the front side of described super birefringence polyester film;

A linearly polarized light conversion layer, which is connected to the reverse side of the super-birefringent polyester film, is used to convert elliptically polarized light into linearly polarized light;

A release film, which is connected with the linearly polarized light conversion layer.
The planar polarizer according to claim 1, wherein the linearly polarized light conversion layer comprises:

PVA film;

a front protective film disposed between the PVA film and the super birefringent polyester film;

The rear protective film is connected with the release film through an adhesive.
A kind of intelligent LCD sunglasses, comprising liquid crystal lens and picture frame, it is characterized in that, the front side of described liquid crystal lens is provided with the surface polarizer as described in any one of claim 1-2, and the reverse side of described liquid crystal lens is provided with bottom polarizer sheet, the second absorption axis of the bottom polarizer is perpendicular to the first absorption axis of the surface polarizer.
The intelligent LCD sunglasses according to claim 3, characterized in that:

The liquid crystal lens also includes a surface substrate glass, a bottom substrate glass, and a liquid crystal cell, and the liquid crystal cell is arranged between the surface substrate glass and the bottom substrate glass;

The surface polarizer is connected to the front surface of the surface substrate glass through an adhesive.
The intelligent LCD sunglasses according to claim 3, characterized in that:

The frame is provided with a photosensitive module, which is used to output voltage signals of different sizes according to the light intensity;

The mirror frame is also provided with a control module, which is electrically connected to the photosensitive module to generate an adjustment signal according to the voltage signal; the control module is also electrically connected to the liquid crystal cell to The adjustment signal adjusts its light transmittance.