WO2023198185A1 - 一种光子膜片以及透明投影显示玻璃 - Google Patents

一种光子膜片以及透明投影显示玻璃 Download PDF

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Publication number
WO2023198185A1
WO2023198185A1 PCT/CN2023/088357 CN2023088357W WO2023198185A1 WO 2023198185 A1 WO2023198185 A1 WO 2023198185A1 CN 2023088357 W CN2023088357 W CN 2023088357W WO 2023198185 A1 WO2023198185 A1 WO 2023198185A1
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WIPO (PCT)
Prior art keywords
photonic
film
photonic film
projection display
diaphragm
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PCT/CN2023/088357
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English (en)
French (fr)
Inventor
张琦
张辉
张飞
陈立东
李炜军
关金亮
Original Assignee
福耀玻璃工业集团股份有限公司
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Publication of WO2023198185A1 publication Critical patent/WO2023198185A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/60—Projection screens characterised by the nature of the surface

Definitions

  • the present invention relates to the technical field of special glass products, in particular to the technical field of bonding photonic films and glass, and specifically to a photonic film and transparent projection display glass.
  • the existing technology there is a photonic diaphragm that can be used for projection display and allows light to propagate through it.
  • the principle is to use artificial microstructures formed by periodically arranging media with different refractive indexes. High reflection effect in the visible light band to improve display performance.
  • the ductility of existing photonic films is very poor and can only be used for glass products with relatively flat shapes. For larger glass products (spherical surface ratio ⁇ 35), when the entire projection photonic film is used for production, After the film is removed, the edge of the photonic film will be seriously wrinkled. This phenomenon will greatly affect the appearance and light transmittance of photonic film-related products, and thus affect the projection imaging effect.
  • the photonic diaphragm provided by the present invention can be better bonded with other diaphragms, and greatly weakens the wrinkle phenomenon caused by the large curvature profile of the photonic diaphragm; in addition,
  • the transparent projection display glass provided by the present invention by using the above-mentioned photonic film, can greatly reduce the edge defects caused by the poor ductility of the internal photonic film after the film is combined while ensuring the projection effect. Severe wrinkles.
  • the present invention provides the following technical solutions:
  • the present invention provides a photonic film, which is cut into at least two parts, and the spherical surface ratio of any part is not greater than a threshold value.
  • the distance between adjacent parts after cutting is a set distance.
  • connection points are provided between adjacent parts after cutting.
  • the length of the connection point is 5 mm to 10 mm.
  • connection point satisfies the following relationship: 0.1% ⁇ w ⁇ s/(Lw ⁇ n) ⁇ s ⁇ 5%;
  • w is the length of the connection point
  • n is the number of connection points
  • L is the length in the cutting direction
  • s is the spacing between adjacent parts.
  • the number of connection points is 4 to 5.
  • the distance between adjacent parts is no more than 2 mm.
  • the distance between adjacent parts is 50 ⁇ m to 1 mm.
  • the threshold range is 0.02 to 0.035.
  • the present invention also provides a transparent projection display glass made by using the above-mentioned photonic film.
  • the transparent projection display glass includes:
  • the first outer glass, the first adhesive layer, the above-mentioned photonic film, the second adhesive layer and the second outer glass are stacked in sequence.
  • the present invention also provides an automobile, including a clear projection display glass for installation on at least one of a sunroof, a side window, a front window and a rear window of the automobile.
  • embodiments of the present invention provide a photonic film and transparent projection display glass.
  • the corresponding photonic film is cut into at least two parts, and the spherical surface ratio of any part is not greater than a threshold value.
  • the corresponding transparent projection display glass includes: a first outer glass, a first adhesive layer, a photonic film, a second adhesive layer and a second outer glass stacked in sequence.
  • the photonic diaphragm provided by the present invention can fit well with other diaphragms, and greatly weakens the wrinkle phenomenon caused by the large curvature of the photonic diaphragm; in addition, the transparent projection display provided by the present invention Glass, by using the above-mentioned photonic film, can greatly reduce the serious wrinkles at the rear edge caused by the poor ductility of the internal photonic film while ensuring the projection effect.
  • Figure 1 is a schematic diagram of the working principle of a transparent projection film product in an embodiment of the present invention
  • Figure 2 is a schematic diagram of wrinkle defects in an embodiment of the present invention.
  • Figure 3 is a schematic structural diagram of a photonic diaphragm in an embodiment of the present invention.
  • Figure 4 is a schematic diagram of the spherical surface ratio in the vertical direction in an embodiment of the present invention.
  • Figure 5 is a schematic diagram of the horizontal spherical surface ratio in an embodiment of the present invention.
  • Figure 6 is a schematic diagram of the photonic film before cutting (horizontal spherical surface ratio) in an embodiment of the present invention
  • Figure 7 is a schematic diagram of the photonic film after cutting in an embodiment of the present invention (horizontal spherical surface ratio);
  • Figure 8 is a schematic diagram of the location of the connection points in the embodiment of the present invention (not completely cut);
  • Figure 9 is a schematic structural diagram of a connection point in an embodiment of the present invention.
  • Figure 10 is a schematic structural diagram of transparent projection display glass in an embodiment of the present invention.
  • Figure 11 is a second structural schematic diagram of transparent projection display glass in an embodiment of the present invention.
  • the working principle of the diaphragm in the existing technology that has both a transparent function and a projection display function (using artificial microstructures formed by periodically arranging media with different refractive indexes to achieve a high reflection effect on the visible light band to improve display performance)
  • a transparent function and a projection display function
  • users can not only observe the impact projected by the projector 1 through the transparent projection film 2, but also observe the external image 3 through it. It is increasingly used in various major scenes and can provide audiences with They have excellent visual experience and shock effect.
  • an embodiment of the present invention provides a photonic diaphragm, which is divided into at least two parts, and the spherical surface ratio of any part is not greater than a threshold.
  • the gap between adjacent parts of the separated photonic diaphragm can function as an "air channel” to reduce and weaken the phenomenon of serious wrinkles on the edges of the photonic diaphragm after the photonic diaphragm is combined.
  • the gap width here needs to be reasonably determined by those skilled in the art through experiments.
  • the spherical ratio here refers to the ratio of the height of the section to the distance between both ends of the section when the photonic film is cut in one direction (dimensionless).
  • the spherical surface ratio in different directions of the same photonic film may also be different.
  • Figure 5 shows the photonic film being cut along the horizontal direction.
  • the spherical surface ratio of different parts of the photonic diaphragm may be different.
  • precision cutting equipment can be used to cut the outline of the photonic diaphragm, and a number of connection points are selected at intervals. This can reduce or even avoid wrinkle defects after the photonic diaphragm is combined, and it can also ensure that the diaphragm is The gap is smaller.
  • the spherical ratio of any part of it must be smaller than the spherical surface of the photonic film before cutting. Take advantage of this property (and control the distance between adjacent parts of the photonic film after cutting). distance,) can better fit the photonic diaphragm to other diaphragms.
  • the spherical surface ratio in the straight direction does not change, that is, when the photonic diaphragm is cut in the vertical direction, its spherical surface ratio in the horizontal direction becomes smaller.
  • the photonic diaphragm is cut in the horizontal direction, its spherical surface ratio in the vertical direction becomes smaller. Small). It can be seen that the spherical ratio in the horizontal direction after cutting has become significantly smaller (from 0.0305 to 0.0144).
  • the spherical ratio in the horizontal direction at this time has fully met the process requirements for stacking the photonic diaphragm and its adjacent diaphragm. And greatly weaken the wrinkle phenomenon caused by the large curvature of the photonic diaphragm.
  • the distance between adjacent parts after cutting is a set distance. It is understandable that the setting distance should not be too large. The purpose is to make it difficult for the naked eye to identify the visual defects caused by the gaps at the joints of the cut photonic films, so as to ensure the projection imaging effect.
  • connection points are provided between adjacent parts after cutting.
  • the cutting methods of the photonic film provided by the embodiment of the present invention include two types: complete cutting and incomplete cutting.
  • Complete cutting means cutting through the adjacent photonic membrane parts completely, so that any adjacent part is completely separated.
  • connection points there are connection points (connections) between adjacent photonic diaphragm parts. It should be noted that the incomplete cutting here is not cutting less than the thickness of the diaphragm, but leaving connection points along the cutting direction. .
  • connection point length s is 5mm to 10mm.
  • the length, width that is, the distance between adjacent photonic film parts after cutting
  • quantity, and the length in the cutting direction of the connection points need to satisfy the following formula: 0.1% ⁇ w ⁇ s/(Lw ⁇ n) ⁇ s ⁇ 5%;
  • w is the length of the connection point
  • n is the number of connection points
  • L is the length in the cutting direction
  • s is the spacing between adjacent parts.
  • the number of connection points is 4 to 5.
  • the distance between adjacent parts of the cut photonic diaphragm is not greater than 2mm. After many experiments, the applicant believes that the distance is not greater than 1mm as a better value. In this case, it is not easy to identify the diaphragm with the naked eye. The visual defects caused by the gap at the joint can ensure the projection imaging effect of the photonic film.
  • the spacing between adjacent parts is 50 ⁇ m to 1 mm;
  • the applicant believes that the above threshold range (the spherical ratio of any part of the photonic film after being cut is not greater than the threshold) is more suitable when it is 0.02 to 0.035.
  • the photonic film after cutting The optimal value is when the spherical surface ratio of any part of the film is not greater than 0.02. At this time, it can not only meet the process requirements of stacking the photonic diaphragm and its adjacent diaphragms, but also weaken the problems caused by the large curvature of the photonic diaphragm. causing wrinkles.
  • embodiments of the present invention provide a photonic film that is cut into at least two parts, and the spherical ratio of any part is not greater than a threshold.
  • the present invention divides the entire photonic film into two parts by cutting off the photonic film and then splicing it together, thereby reducing the spherical surface ratio in the horizontal or vertical direction to less than 0.02, and combined with the restriction that the distance between adjacent parts is ⁇ 1 mm. , making it difficult for the naked eye to identify visual defects caused by the gaps at the junction of the photonic diaphragms, and ensuring the projection imaging effect.
  • the photonic diaphragm provided by the present invention can be better bonded to other diaphragms, and greatly weakens the wrinkle phenomenon caused by the large curvature profile of the photonic diaphragm.
  • an embodiment of the present invention also provides a transparent projection display glass, including: a first outer glass 4, a first adhesive layer 5, a photonic film 6, and a second outer glass 4 stacked in sequence. Adhesive layer 7 and second outer glass 8 .
  • the first adhesive layer 5 and the second adhesive layer 7 are made of PVB interlayer film. It can be understood that the first adhesive layer 5 and the second adhesive layer 7 can also be made of other materials, such as EVA, etc. This application is not limited to this.
  • the photonic film in the transparent projection display glass may include multiple parts (a first part of the photonic film 6-1 and a second part of the photonic film 6-2), and the multiple parts After each part is cut, it can be bonded with the PVB interlayer film. It is understandable that the difficulty of the bonding process of the photonic film designed using this process will be greatly reduced, and on the premise of ensuring the projection effect, it will greatly improve the performance of the film. The weakening is due to the poor ductility of the internal photonic diaphragm, which causes serious wrinkles at the rear edge of the film.
  • the present invention also provides a car, which includes the above-mentioned transparent projection display glass for installation on at least one of the sunroof, side window, front window and rear window of the car.
  • the transparent projection display glass installed in the car provided by the above embodiment can bring news and entertainment videos to the passengers in the car without affecting the line of sight between the passengers and the outside of the car, that is, without affecting its function as the car window itself. , information reading and necessary information prompts, and certain advertisements can also be placed (similar to screen advertisements in elevators).
  • transparent projection display glass can also be used in application scenarios such as the glass on subway windows, the glass on train windows, the glass on bus windows, the glass on indoor windows on ships, and the window glass on both sides of the aircraft interior.
  • embodiments of the present invention provide a transparent projection display glass, including: a first outer glass, a first adhesive layer, a photonic film, a second adhesive layer and a second outer glass stacked in sequence.
  • the transparent projection display glass provided by the present invention by using the above-mentioned photonic film, can greatly reduce the serious wrinkles at the rear edge caused by the poor ductility of the internal photonic film while ensuring the projection effect. The phenomenon.
  • connection should be understood in a broad sense.
  • connection or integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Joining Of Glass To Other Materials (AREA)

Abstract

一种光子膜片（6）以及透明投影显示玻璃，其中的光子膜片（6）被切割为至少两部分，其中任一部分的球面比不大于一阈值。透明投影显示玻璃包括：依次堆叠的第一外片玻璃（4），第一粘结层（5），光子膜片（6），第二粘结层（7）以及第二外片玻璃（8）。光子膜片（6）可以较好地与其他膜片进行贴合，且大大弱化由于光子膜片（6）因大曲率型面的问题而导致的褶皱现象；透明投影显示玻璃，通过采用光子膜片（6），可以在保证投影效果的前提下，极大地减轻由于其内部的光子膜片（6）由于其延展性差所引起的合片后边部褶皱严重的现象。

Description

一种光子膜片以及透明投影显示玻璃 技术领域
本发明涉及特种玻璃产品技术领域，特别是涉及光子膜片与玻璃贴合的技术领域，具体涉及一种光子膜片以及透明投影显示玻璃。
背景技术
在现有技术中，存在一种既可用于投影显示、又可以允许光线穿过其进行传播的光子膜片，其原理是利用不同折射率的介质周期性排列形成的人工微结构，利用其对可见光波段的高反射效应以提高显示性能。然而现有光子膜片的延展性很差，仅仅可用于型面较平的玻璃产品，对于较大的型面玻璃产品(球面比≥35)，使用整张投影光子膜进行生产时，在合片后会导致光子膜片边部褶皱严重，这种现象极大地影响光子膜片相关产品的美观以及透光性，进而影响投影成像效果。
发明内容
针对现有技术中的问题，本发明所提供的光子膜片可以较好地与其他膜片进行贴合，且大大弱化由于光子膜片因大曲率型面的问题而导致的褶皱现象；另外，本发明所提供的透明投影显示玻璃，通过采用上述的光子膜片，可以在保证投影效果的前提下，极大地减轻由于其内部的光子膜片由于其延展性差所引起的合片后，边部褶皱严重的现象。
为解决上述技术问题，本发明提供以下技术方案：
本发明提供一种光子膜片，该光子膜片被切割为至少两部分，其中任一部分的球面比不大于一阈值。
一实施例中，切割之后的相邻部分之间的间距为一设定距离。
一实施例中，切割之后的相邻部分之间设置有连接点。
一实施例中，所述连接点长度为5mm至10mm。
一实施例中，所述连接点满足以下关系式：
0.1％≤w×s/(L-w×n)×s≤5％；
其中：w为连接点长度，n为连接点数量，L为切割方向长度，s为所述相邻部分之间的间距。
一实施例中，所述连接点数量为4至5个。
一实施例中，所述相邻部分之间的间距不大于2mm。
一实施例中，所述相邻部分之间的间距为50μm至1mm。
一实施例中，所述阈值范围为0.02至0.035。
另一方面，本发明还提供一种利用上述光子膜片而制作的透明投影显示玻璃，该透明投影显示玻璃包括：
依次堆叠的第一外片玻璃，第一粘结层，上述的光子膜片，第二粘结层以及第二外片玻璃。
第三方面，本发明还提供一种汽车，包括明投影显示玻璃，用于安装在汽车的天窗、侧窗、前档窗以及后档窗中的至少之一上。
从上述描述可知，本发明实施例提供一种光子膜片以及透明投影显示玻璃。对应的光子膜片被切割为至少两部分，其中任一部分的球面比不大于一阈值。对应的透明投影显示玻璃包括：依次堆叠的第一外片玻璃，第一粘结层，光子膜片，第二粘结层以及第二外片玻璃。本发明所提供的光子膜片可以较好地与其他膜片进行贴合，且大大弱化由于光子膜片因大曲率型面的问题而导致的褶皱现象；另外，本发明所提供的透明投影显示玻璃，通过采用上述的光子膜片，可以在保证投影效果的前提下，极大地减轻由于其内部的光子膜片由于其延展性差所引起的合片后边部褶皱严重的现象。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明的实施例中透明投影薄膜产品的工作原理的示意图；
图2为本发明的实施例中褶皱缺陷的示意图；
图3为本发明的实施例中光子膜片的结构示意图；
图4为本发明的实施例中竖直方向球面比的示意图；
图5为本发明的实施例中水平方向球面比的示意图；
图6为本发明的实施例中光子膜片切割前的示意图(水平方向球面比)；
图7为本发明的实施例中光子膜片切割后的示意图(水平方向球面比)；
图8为本发明的实施例中连接点位置的示意图(未完全切割)；
图9为本发明的实施例中连接点的结构示意图；
图10为本发明的实施例中透明投影显示玻璃的结构示意图一；
图11为本发明的实施例中透明投影显示玻璃的结构示意图二。
附图标号：
1：投影仪；
2：透明投影薄膜；
3：外部图像；
4：第一外片玻璃；
5：第一粘结层；
6：光子膜片；
6-1：光子膜片第一部分；
6-2：光子膜片第二部分；
7：第二粘结层；
8：第二外片玻璃。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚明白，下面结合附图对本发明实施例做进一步详细说明。在此，本发明的示意性实施例及其说明用于解释本发明，但并不作为对本发明的限定。显然，所描述的实施例仅仅是本申请一部分的实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都应当属于本申请保护的范围。
现有技术中的既具有透明功能，又具有投影显示供的膜片的工作原理(利用不同折射率的介质周期性排列形成的人工微结构，从而对可见光波段的高反射效应以提高显示性能)如图1所示，用户既可以通过透明投影薄膜2观察到投影仪1所投射的影响，又可以通过其观察到外部图像3，其越来越多的应用于各大场景中，可以提供观众们极佳的视觉体验以及震感的影响效果。
然而上述产品在制作的过程中，由于其内部的核心膜片-光子膜片的延展性较差，其在与其他膜片进行贴合时，合片之后往往会在边部产生严重的褶皱现象(参见图2)。极大的影响产品美观性以及透光效果。
基于上述技术痛点，参见图3，首先，本发明实施例提供一种光子膜片，该光子膜片被分隔为至少两部分，其中任一部分的球面比不大于一阈值。
可以理解的是分隔之后的光子膜片的相邻部分之间的间隙可以起到“空气通道”的作用，以此减轻、弱化光子膜片合片之后在边部产生严重的褶皱的现象，但间隙如果过大，虽然有利于解决“褶皱”问题，但是合片之后人眼观察到的投影图像中间有暗线，不利于美观并且影响投影效果；另一方面，间隙如果过小，虽然有利于美观(即合片之后的投影图像人眼不会观察到暗线)，但是不利于空气导通，极容易造成“褶皱”现象，故这里的间隙宽度需要本领域技术人员通过实验的方式合理确定。
参见图4，这里的球面比是指将光子膜片沿一方向剖开，剖面高度与剖面两端距离的比值(无量纲)，举例来说，对于图中的球面比为125.2mm/1698.3mm＝0.0737；需要说明的是，对于同一光子膜片不同方向的球面比也可能不同。具体地，参见图4以及图5，图4是沿光子膜片竖直方向进行切割，其球面比为V1＝125.2mm/1698.3mm＝0.0737；图5是沿光子膜片水平方向进行切割，其球面比为H1＝44.35mm/1453.5mm＝0.0305。另外，即使同一方向上光子膜片的不同部位的球面比也可能不同，参见图6，其端部的球面比为44.35mm/1453.5mm＝0.035，而其中部的球面比为42.407mm/1367.299mm＝0.031。
在具体施工时，可使用精密切割设备将光子膜片轮廓进行切割，中间间隔选取若干连接点，如此可以实现光子膜片合片后降低褶皱缺陷，甚至避免褶皱缺陷的目的，又可以保证膜片间隙较小。
可以理解的是，将光子膜片进行切割之后，其任一部分的球面比必然小于其未切割之前的光子膜片球面，利用这一性质(并控制好切割之后的相邻部分光子膜片之间的距离，)可以较好的将光子膜片与其他膜片进行贴合。
图7是图6中的光子膜沿图中切割线(点划线)进行切割之后的部分光子膜示意图；重新计算其水平方向的球面比H2＝10.5mm/727.7mm＝0.0144(此时竖直方向上的球面比不发生变化，即对光子膜片进行竖直方向切割，其水平方向的球面比变小，同样地，对光子膜片进行水平方向切割，其竖直方向的球面比变小)。可见切割之后的水平方向的球面比明显变小(由0.0305变为0.0144)，经实际贴合操作，此时的水平方向的球面比已经完全满足光子膜片与其相邻膜片堆叠的工艺要求，并大大弱化由于光子膜片因大曲率型面的问题而导致的褶皱现象。
一实施例中，切割之后的相邻部分之间的间距为一设定距离。可以理解的是，该设定距离不宜过大，目的是使肉眼不易识别切割后的光子膜片结合处缝隙带来的视觉缺陷，以保证投影成像效果。
一实施例中，参见图8，切割之后的相邻部分之间设置有连接点(图中黑点所示)。
本发明实施例提供的光子膜片的切割方式包括两种：完全切割以及不完全切割。完全切割，即将相邻的光子膜片部分完全切透，使任一相邻部分之间完全分割开来。
不完全分割，相邻的光子膜片部分之间设置有连接点(藕断丝连)，需要说明的是，这里的不完全切割不是进行小于膜片厚度的切割，而是沿切割方向上留有连接点。
一实施例中，参见图9，连接点长度s为5mm至10mm。
一实施例中，参见图9，连接点的长度、宽度(即切割后的相邻光子膜片部分之间的距离)、数量以及切割方向长度需要满足下式：
0.1％≤w×s/(L-w×n)×s≤5％；
其中：w为连接点长度，n为连接点数量，L为切割方向长度，s为相邻部分之间的间距。
优选地，连接点数量为4至5个。
一实施例，切割后的光子膜片的相邻部分之间的间距不大于2mm，申请人经过多次实验，认为其为不大于1mm时为更优值，此种情况下肉眼不易识别膜片结合处缝隙带来的视觉缺陷，可以保证光子膜片的投影成像效果。
优选地，相邻部分之间的间距为50μm至1mm；
一实施例中，申请人经过多次实验，认为上述阈值范围(光子膜片被切割之后的任一部分的球面比不大于该阈值)为0.02至0.035时较为合适，优选地，切割后的光子膜片的任一部分的球面比不大于0.02时为最优值，此时，既可以满足光子膜片与其相邻膜片堆叠的工艺要求，又可以弱化由于光子膜片因大曲率型面的问题而导致的褶皱现象。
进一步地，本发明实施例提供的光子膜片的其他参数如表1所述：
表1
从上述描述可知，本发明实施例提供一种光子膜片，该光子膜片被切割为至少两部分，其中任一部分的球面比不大于一阈值。本发明通过将光子膜片割断后拼接的方式将原本整面光子膜片分割为两部分，从而使水平或者竖直方向上的球面比降低至0.02以下，并且结合相邻部分间距≤1mm的限制，使肉眼不易识别光子膜片结合处缝隙带来的视觉缺陷，并可以保证投影成像效果。另一方面，本发明所提供的光子膜片可以较好地与其他膜片进行贴合，且大大弱化由于光子膜片因大曲率型面的问题而导致的褶皱现象。
参见图10，基于上述的光子膜片，本发明实施例还提供一种透明投影显示玻璃，包括：依次堆叠的第一外片玻璃4，第一粘结层5，光子膜片6，第二粘结层7以及第二外片玻璃8。
优选地，第一粘结层5以及第二粘结层7材质为PVB中间膜，可以理解的是，第一粘结层5以及第二粘结层7也可以选用其他材质，比如EVA等，本申请不以此为限。
接着，参见图11，本发明实施例提供的透明投影显示玻璃中的光子膜片可包括多个部分(光子膜片第一部分6-1以及光子膜片第二部分6-2)，且该多个部分被切割之后可再与PVB中间膜进行贴合，可以理解的是，采用此种工艺设计的光子膜片，其贴合工艺难度将大大降低，且在保证投影效果的前提下，极大的弱化由于其内部的光子膜片由于其延展性差所引起的合片后边部褶皱严重的现象。
一实施例中，本发明还提供一种汽车，该汽车包括上述透明投影显示玻璃，用于安装在汽车的天窗、侧窗、前档窗以及后档窗中的至少之一上。
上述实施例提供的安装在汽车上透明投影显示玻璃可以在不影响乘客与车外之间的视线，即不影响其作为车窗本身的功能的前提下，给汽车内乘客来带新闻、娱乐视频、资讯阅读以及必要的信息提示，还可以投放一定的广告(类似于电梯内的屏幕广告)。
可以理解的是，透明投影显示玻璃还可以用于地铁上车窗的玻璃、火车车窗上的玻璃、公交车车窗上的玻璃，轮船室内窗户的玻璃以及飞机室内两边的窗户玻璃等应用场景。
从上述描述可知，本发明实施例提供一种透明投影显示玻璃，包括：依次堆叠的第一外片玻璃，第一粘结层，光子膜片，第二粘结层以及第二外片玻璃。本发明所提供的透明投影显示玻璃，通过采用上述的光子膜片，可以在保证投影效果的前提下，极大地减轻由于其内部的光子膜片由于其延展性差所引起的合片后边部褶皱严重的现象。
在本说明书的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”等仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”等的特征可以明示或者隐含地包括一个或者更多个该特征。在本发明的描述中，除非另有说明，“多个”的含义是两个或两个以上。
参考术语“一个实施例”、“一个具体实施例”、“一些实施例”、“例如”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。各实施例中涉及的步骤顺序用于示意性说明本发明的实施，其中的步骤顺序不作限定，可根据需要作适当调整。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以通过具体情况理解上述术语在本发明中的具体含义。
以上所述的具体实施例，对本发明的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上所述仅为本发明的具体实施例而已，并不用于限定本发明的 保护范围，凡在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种光子膜片，其特征在于，所述光子膜片被切割为至少两部分，其中任一部分的球面比不大于一阈值；切割之后的相邻部分之间设置有连接点；所述球面比为所述光子膜片沿一方向剖开，剖面高度与剖面两端距离的比值。
  2. 根据权利要求1所述的光子膜片，其特征在于，切割之后的相邻部分之间的间距为一设定距离。
  3. 根据权利要求1所述的光子膜片，其特征在于，所述连接点的长度为5mm至10mm。
  4. 根据权利要求3所述的光子膜片，其特征在于，所述连接点满足以下关系式：
    0.1％≤w×s/(L-w×n)×s≤5％；
    其中：w为连接点长度，n为连接点数量，L为切割方向长度，s为所述相邻部分之间的间距。
  5. 根据权利要求1、3或4任一项所述的光子膜片，其特征在于，所述连接点数量为4至5个。
  6. 根据权利要求1或2所述的光子膜片，其特征在于，所述相邻部分之间的间距不大于2mm。
  7. 根据权利要求6所述的光子膜片，其特征在于，所述相邻部分之间的间距为50μm至1mm。
  8. 根据权利要求1所述的光子膜片，其特征在于，所述阈值范围为0.02至0.035。
  9. 一种透明投影显示玻璃，其特征在于，包括：依次堆叠的第一外片玻璃，第一粘结层，权利要求1至8中任一项的光子膜片，第二粘结层以及第二外片玻璃。
  10. 一种汽车，其特征在于，包括如权利要求9所述的透明投影显示玻璃，用于安装在汽车的天窗、侧窗、前档窗以及后档窗中的至少之一上。
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