CN108169948B - An anti-peeping module, its manufacturing method and display device - Google Patents

Abstract

Translated fromChinese

本发明公开了一种防窥模组、其制作方法及显示装置，包括位于第一透明基材和第二透明基材之间的支撑基材，位于支撑基材内的多个反射腔；反射腔仅在侧壁具有向外部凸出的曲面形状的反射层，各反射腔面向第一透明基材一侧具有入光口，各反射腔面向第二透明基材一侧具有出光口；从入光口指向出光口的方向，反射腔的横截面面积逐渐变大。由于反射腔的形状类似碗状，相对于现有的单一角度的反射光栅结构，可以将各个方向的入射光均收敛到中央角度区域，不受观看方向变化的限制，可以实现全方位角度的防窥视效果。并且，碗状的反射腔能够将更多大角度的入射光修正到接近垂直方向出射，使出射光集中在一个相对小的角度范围内，提升中央角度区域的亮度。

The invention discloses an anti-peep module, a manufacturing method thereof and a display device, comprising a support base located between a first transparent base material and a second transparent base material, a plurality of reflective cavities located in the support base material; reflection The cavity only has a reflective layer in the shape of a curved surface that protrudes to the outside, each reflective cavity has a light entrance on the side facing the first transparent substrate, and each reflective cavity has a light exit on the side facing the second transparent substrate; The optical port points in the direction of the light exit port, and the cross-sectional area of the reflective cavity gradually increases. Since the shape of the reflective cavity is similar to a bowl, compared with the existing single-angle reflective grating structure, the incident light in all directions can be converged to the central angle area, which is not limited by the change of the viewing direction, and can realize the protection of all angles. Peep effect. In addition, the bowl-shaped reflective cavity can correct more large-angle incident light to exit in a nearly vertical direction, so that the exiting light is concentrated in a relatively small angle range, and the brightness of the central angle area is improved.

Description

Translated fromChinese

一种防窥模组、其制作方法及显示装置An anti-peeping module, its manufacturing method and display device

技术领域technical field

本发明涉及显示技术领域，尤其涉及一种防窥模组、其制作方法及显示装置。The present invention relates to the field of display technology, and in particular, to a privacy protection module, a manufacturing method thereof and a display device.

背景技术Background technique

随着平板显示技术的飞速发展，现有的平板显示器的出光角度都非常大，最大出光角度甚至达到了178°。如此大的视角在一些应用如电视产品给消费者带来了极好的用户体验，但在一些应用如个人移动产品或者特殊应用场合，会造成个人信息或隐私的泄漏。With the rapid development of flat-panel display technology, the light-emitting angle of the existing flat-panel displays is very large, and the maximum light-emitting angle even reaches 178°. Such a large viewing angle brings consumers an excellent user experience in some applications such as TV products, but in some applications such as personal mobile products or special applications, it may cause leakage of personal information or privacy.

针对这一问题，防窥视显示器件的技术开发被提上日程。现有的防窥技术主要是在显示面板上增加防窥视膜材来实现显示角度的收敛。防窥膜材以3M的防窥膜为主，由于是吸收型的防窥膜材，会导致亮度损失，因此反射型防窥膜材被提出来。如图1所示，现有的反射型膜材都是类似于百叶窗的光栅结构，光栅结构中将原来的吸收材料换成反射材料。这种防窥膜材只能对垂直于光栅的方向有防窥效果，对于平行于光栅的方向上没有防窥效果。而现有的移动产品尤其是手机和平板等，在使用时会改变手持方向，如此就会导致无法起到防窥视的作用。In response to this problem, the technical development of anti-peep display devices has been put on the agenda. The existing anti-peeping technology mainly adds anti-peeping film material on the display panel to realize the convergence of the display angle. The privacy protection film is mainly made of 3M privacy protection film. Since it is an absorption type privacy protection film material, it will cause a loss of brightness, so the reflection type privacy protection film material is proposed. As shown in Fig. 1, the existing reflective film materials are all grating structures similar to shutters, and the original absorbing material is replaced with a reflective material in the grating structure. This privacy film material can only have a privacy protection effect in the direction perpendicular to the grating, and has no privacy protection effect in the direction parallel to the grating. However, the existing mobile products, especially mobile phones and tablets, etc., will change the hand-held direction when they are used, which will lead to the inability to play an anti-peeping function.

发明内容SUMMARY OF THE INVENTION

有鉴于此，本发明实施例提供了一种防窥模组、其制作方法及显示装置，用以解决现有的防窥膜材只能实现单一方向防窥视效果的问题。In view of this, embodiments of the present invention provide an anti-peeping module, a method for manufacturing the same, and a display device, so as to solve the problem that the existing anti-peeping film can only achieve anti-peeping effect in one direction.

因此，本发明实施例提供了一种防窥模组，包括：相对而置的第一透明基材和第二透明基材，位于所述第一透明基材和所述第二透明基材之间的支撑基材，以及位于所述支撑基材内的多个反射腔；其中，Therefore, an embodiment of the present invention provides a privacy protection module, comprising: a first transparent base material and a second transparent base material opposite to each other, located between the first transparent base material and the second transparent base material A supporting substrate between, and a plurality of reflective cavities located in the supporting substrate; wherein,

各所述反射腔仅在侧壁具有反射层，各所述反射腔面向所述第一透明基材一侧具有入光口，各所述反射腔面向所述第二透明基材一侧具有出光口；Each of the reflective cavities only has a reflective layer on the sidewall, each of the reflective cavities has a light entrance on the side facing the first transparent substrate, and each of the reflective cavities has a light exit on the side facing the second transparent substrate mouth;

所述反射层为向所述反射腔外部凸出的曲面；the reflective layer is a curved surface protruding to the outside of the reflective cavity;

从所述入光口指向所述出光口的方向上，所述反射腔平行于所述第一透明基材的截面面积逐渐变大。From the light entrance port to the light exit port, the cross-sectional area of the reflective cavity parallel to the first transparent substrate gradually increases.

在一种可能的实现方式中，在本发明实施例提供的上述防窥模组中，所述反射腔平行于所述第一透明基材的截面为圆形，所述反射腔的侧壁形状为椭圆球被平行于短轴方向的两个平面截取的部分。In a possible implementation manner, in the above privacy protection module provided by the embodiment of the present invention, the cross section of the reflection cavity parallel to the first transparent substrate is circular, and the shape of the sidewall of the reflection cavity is circular. is the part of the ellipsoid that is intercepted by two planes parallel to the minor axis direction.

在一种可能的实现方式中，在本发明实施例提供的上述防窥模组中，各所述反射腔之间紧密排列，且相邻两行或相邻两列的所述反射腔之间错开排布。In a possible implementation manner, in the above privacy protection module provided by the embodiment of the present invention, the reflection cavities are closely arranged, and between the reflection cavities in two adjacent rows or two adjacent columns Stagger the arrangement.

在一种可能的实现方式中，在本发明实施例提供的上述防窥模组中，所述支撑基材为遮光材料；或，所述支撑基材与所述第一透明基材之间具有遮光层，所述遮光层在各所述反射腔的入光口处具有镂空结构。In a possible implementation manner, in the above privacy protection module provided by the embodiment of the present invention, the supporting substrate is a light-shielding material; or, there is a space between the supporting substrate and the first transparent substrate. The light shielding layer has a hollow structure at the light entrance of each reflection cavity.

在一种可能的实现方式中，在本发明实施例提供的上述防窥模组中，还包括：位于各所述反射腔内的第三透明基材。In a possible implementation manner, the privacy protection module provided by the embodiment of the present invention further includes: a third transparent substrate located in each of the reflection cavities.

在一种可能的实现方式中，在本发明实施例提供的上述防窥模组中，所述第三透明基材为聚合物分散液晶；In a possible implementation manner, in the above privacy protection module provided by the embodiment of the present invention, the third transparent substrate is a polymer dispersed liquid crystal;

所述防窥模组，还包括：位于所述第一透明基材面向所述反射腔一侧的第一透明电极层，以及位于所述第二透明基材面向所述反射腔一侧的第二透明电极层；其中，The privacy protection module further includes: a first transparent electrode layer located on the side of the first transparent substrate facing the reflective cavity, and a first transparent electrode layer located on the side of the second transparent substrate facing the reflective cavity. Two transparent electrode layers; wherein,

所述反射层与所述第一透明电极层相互绝缘，和/或，所述反射层与所述第二透明电极层相互绝缘；the reflective layer and the first transparent electrode layer are insulated from each other, and/or the reflective layer and the second transparent electrode layer are insulated from each other;

在普通模式下，所述聚合物分散液晶的液晶轴随机排列；在防窥模式下，所述聚合物分散液晶的液晶轴沿着所述第一透明电极层与所述第二透明电极层之间形成的电场排列。In the normal mode, the liquid crystal axis of the polymer dispersed liquid crystal is randomly arranged; in the privacy mode, the liquid crystal axis of the polymer dispersed liquid crystal is along the distance between the first transparent electrode layer and the second transparent electrode layer. The electric field arrangement formed between them.

在一种可能的实现方式中，在本发明实施例提供的上述防窥模组中，还包括：位于所述反射腔的入光口与所述第一透明电极层之间的第四透明基材。In a possible implementation manner, the privacy protection module provided in the embodiment of the present invention further includes: a fourth transparent base located between the light entrance of the reflective cavity and the first transparent electrode layer material.

另一方面，本发明实施例还提供了一种上述防窥模组的制作方法，包括：On the other hand, an embodiment of the present invention also provides a method for making the above privacy protection module, comprising:

在第一透明基材上形成支撑多个反射腔的支撑基材；forming a supporting substrate supporting a plurality of reflective cavities on the first transparent substrate;

在各所述反射腔的侧壁形成反射层；forming a reflective layer on the sidewall of each of the reflective cavities;

在所述反射腔上贴合第二透明基材。A second transparent substrate is attached on the reflective cavity.

在一种可能的实现方式中，在本发明实施例提供的上述制作方法中，所述在第一透明基材上形成支撑多个反射腔的支撑基材之前，还包括：In a possible implementation manner, in the above-mentioned manufacturing method provided by the embodiment of the present invention, before forming the supporting substrate supporting the plurality of reflective cavities on the first transparent substrate, the method further includes:

在所述第一透明基材上形成第一透明电极；forming a first transparent electrode on the first transparent substrate;

所述在所述反射腔上贴合第二透明基材之前，还包括：Before laminating the second transparent substrate on the reflective cavity, the method further includes:

在所述反射腔内填充聚合物分散液晶；Filling the reflective cavity with polymer dispersed liquid crystal;

在所述第二透明基材上形成第二透明电极；forming a second transparent electrode on the second transparent substrate;

所述在所述反射腔上贴合第二透明基材，具体包括：The laminating the second transparent substrate on the reflective cavity specifically includes:

将所述第二透明基材形成有所述第二透明电极的一侧与所述反射腔进行贴合。A side of the second transparent substrate on which the second transparent electrode is formed is attached to the reflective cavity.

另一方面，本发明实施例还提供了一种显示装置，包括显示面板，以及位于所述显示面板的出光面的本发明实施例提供的上述防窥模组。On the other hand, an embodiment of the present invention further provides a display device, including a display panel, and the above privacy protection module provided by the embodiment of the present invention located on a light emitting surface of the display panel.

本发明实施例的有益效果包括：The beneficial effects of the embodiments of the present invention include:

本发明实施例提供的一种防窥模组、其制作方法及显示装置，包括位于相对而置的第一透明基材和第二透明基材之间的支撑基材，以及位于支撑基材内的多个反射腔；其中，各反射腔仅在侧壁具有反射层，各反射腔面向第一透明基材一侧具有入光口，各反射腔面向第二透明基材一侧具有出光口；反射层为向反射腔外部凸出的曲面；从入光口指向出光口的方向上，反射腔平行于第一透明基材的截面面积逐渐变大。由于反射层具有向反射腔外部凸出的曲面结构，使反射腔的形状类似于碗状，相对于现有的单一角度的反射光栅结构，可以将各个方向的入射光即方位角0～360°的入射光均收敛到中央角度区域，不受显示面板的观看方向变化的限制，可以实现全方位角度的防窥视效果。并且，类似于碗状的反射腔能够将更多大角度的入射光修正到接近垂直方向出射，使出射光集中在一个相对小的角度范围内，因此可以在保证防窥视的同时，提升中央角度区域的亮度。An embodiment of the present invention provides an anti-peep module, a method for manufacturing the same, and a display device, including a support base located between a first transparent base material and a second transparent base material that are opposite to each other, and a support base material located in the support base material a plurality of reflective cavities; wherein, each reflective cavity only has a reflective layer on the side wall, each reflective cavity has a light entrance on the side facing the first transparent substrate, and each reflective cavity has a light outlet on the side facing the second transparent substrate; The reflection layer is a curved surface that protrudes to the outside of the reflection cavity; in the direction from the light entrance to the light exit, the cross-sectional area of the reflection cavity parallel to the first transparent substrate gradually increases. Because the reflective layer has a curved surface structure that protrudes to the outside of the reflective cavity, the shape of the reflective cavity is similar to a bowl shape. Compared with the existing single-angle reflective grating structure, the incident light in all directions, that is, the azimuth angle of 0 to 360°, can be The incident light is converged to the central angle area, which is not limited by the change of the viewing direction of the display panel, and can achieve anti-peeping effect from all angles. In addition, the bowl-shaped reflective cavity can correct more large-angle incident light to be emitted in a near-vertical direction, so that the outgoing light is concentrated in a relatively small angle range, so the central angle can be improved while ensuring anti-peeping. Brightness of the area.

附图说明Description of drawings

图1为现有的防窥膜材的结构示意图；1 is a schematic structural diagram of an existing privacy protection film;

图2a至图2d分别为本发明实施例提供的防窥模组的结构示意图；2a to 2d are respectively schematic structural diagrams of a privacy protection module provided by an embodiment of the present invention;

图3a和图3b分别为本发明实施例提供的防窥模组的俯视示意图；3a and 3b are respectively schematic top views of the privacy protection module provided by the embodiment of the present invention;

图4为本发明实施例提供的防窥模组的仰视示意图；4 is a schematic bottom view of a privacy protection module provided by an embodiment of the present invention;

图5a为本发明实施例提供的防窥模组的反射腔的模型示意图；5a is a schematic diagram of a model of a reflection cavity of a privacy protection module provided by an embodiment of the present invention;

图5b为本发明实施例提供的反射腔模型模拟后的出射光强与视角之间的关系曲线示意图；FIG. 5b is a schematic diagram of a relationship curve between outgoing light intensity and viewing angle after simulation of a reflective cavity model provided by an embodiment of the present invention;

图6和图7分别为本发明实施例提供的防窥模组的制作方法的流程图；FIG. 6 and FIG. 7 are respectively flowcharts of a method for manufacturing a privacy protection module provided by an embodiment of the present invention;

图8为本发明实施例提供的显示装置的结构示意图。FIG. 8 is a schematic structural diagram of a display device according to an embodiment of the present invention.

具体实施方式Detailed ways

为了使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明作进一步地详细描述，显然，所描述的实施例仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，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它实施例，都属于本发明保护的范围。In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

附图中各部件的形状和大小不反映真实比例，目的只是示意说明本发明内容。The shapes and sizes of the components in the drawings do not reflect the actual scale, and are only intended to illustrate the content of the present invention.

本发明实施例提供的一种防窥模组，如图2a至图2d所示，包括：相对而置的第一透明基材10和第二透明基材20，位于第一透明基材10和第二透明基材20之间的支撑基材30，以及位于支撑基材30内的多个反射腔40；其中，An anti-peep module provided by an embodiment of the present invention, as shown in FIG. 2a to FIG. 2d, includes: a firsttransparent substrate 10 and a secondtransparent substrate 20 that are opposite to each other, located between the firsttransparent substrate 10 and the secondtransparent substrate 20. The supportingsubstrates 30 between the secondtransparent substrates 20, and the plurality ofreflective cavities 40 located in the supportingsubstrates 30; wherein,

各反射腔40仅在侧壁具有反射层41，各反射腔40面向第一透明基材10一侧具有入光口42，各反射腔40面向第二透明基材20一侧具有出光口43；Eachreflective cavity 40 only has areflective layer 41 on the side wall, eachreflective cavity 40 has alight entrance 42 on the side facing the firsttransparent substrate 10 , and eachreflective cavity 40 has alight exit 43 on the side facing the secondtransparent substrate 20 ;

反射层41为向反射腔40外部凸出的曲面；Thereflective layer 41 is a curved surface protruding to the outside of thereflective cavity 40;

从入光口42指向出光口43的方向上，反射腔40平行于第一透明基材10的截面S面积逐渐变大。In the direction from thelight entrance 42 to thelight exit 43 , the area of the cross section S of thereflection cavity 40 parallel to the firsttransparent substrate 10 gradually increases.

具体地，在本发明实施例提供的上述防窥模组中，由于反射层41具有向反射腔40外部凸出的曲面结构，使反射腔40的形状类似于碗状，相对于现有的单一角度的反射光栅结构，可以将各个方向的入射光即方位角0～360°的入射光均收敛到中央角度区域，不受显示面板的观看方向变化的限制，可以实现全方位角度的防窥视效果。并且，类似于碗状的反射腔40能够将更多大角度的入射光修正到接近垂直方向出射，使出射光集中在一个相对小的角度范围内，因此可以在保证防窥视的同时，提升中央角度区域的亮度。Specifically, in the above-mentioned anti-peep module provided by the embodiment of the present invention, since thereflection layer 41 has a curved surface structure that protrudes to the outside of thereflection cavity 40, the shape of thereflection cavity 40 is similar to a bowl shape, which is different from the existing single The angular reflection grating structure can converge the incident light in all directions, that is, the incident light with an azimuth angle of 0 to 360°, to the central angle area, which is not limited by the change of the viewing direction of the display panel, and can achieve anti-peeping effect in all directions. . In addition, the bowl-shapedreflective cavity 40 can correct more incident light from a large angle to exit in a nearly vertical direction, so that the outgoing light is concentrated in a relatively small angle range, so it can ensure anti-peeping while improving the center. Brightness of the angular area.

可选地，本发明实施例提供的上述防窥模组可以采用防窥膜材的方式实现，也可以采用防窥器件的方式实现，在此不做限定。具体地，在采用防窥膜材的方式实现时，第一透明基材10和第二透明基材20可以采用诸如PET或PMMA等树脂材料制作，此时，第一透明基材10和第二透明基材20也可以分别称为第一保护层和第二保护层。具体地，在采用防窥器件的方式实现时，第一透明基材10和第二透明基材20可以采用诸如石英玻璃等刚性材料制作，此时，第一透明基材10和第二透明基材20也可以分别称为第一衬底基板和第二衬底基板。Optionally, the above-mentioned anti-peeping module provided in the embodiment of the present invention may be implemented in the form of anti-peeping film material, and may also be implemented in the form of anti-peeping device, which is not limited herein. Specifically, when a privacy film is used, the firsttransparent substrate 10 and the secondtransparent substrate 20 can be made of resin materials such as PET or PMMA. In this case, the firsttransparent substrate 10 and the secondtransparent substrate 20 Thetransparent substrate 20 may also be referred to as a first protective layer and a second protective layer, respectively. Specifically, when implemented by means of anti-peep devices, the firsttransparent substrate 10 and the secondtransparent substrate 20 can be made of rigid materials such as quartz glass. In this case, the firsttransparent substrate 10 and the secondtransparent substrate 20 Thematerial 20 may also be referred to as a first base substrate and a second base substrate, respectively.

可选地，在本发明实施例提供的上述防窥模组中，为了保证将各个方向的入射光均收敛到中央角度区域，如图3a所示的俯视图和图4所示的仰视图，反射腔40平行于第一透明基材10的截面即横截面一般为圆形，当然也可以是椭圆形或近似于圆形的形状等；如图5a所示，反射腔40的侧壁形状可以为椭圆球被平行于短轴方向的两个平面截取的部分。当然，在具体实施时，反射腔40的侧壁形状也可以选择圆球被两平面截取的部分，或者其他封闭曲面图形被截取的部分，在此不做限定。Optionally, in the above-mentioned privacy protection module provided by the embodiment of the present invention, in order to ensure that the incident light in all directions is converged to the central angle area, as shown in the top view shown in FIG. 3a and the bottom view shown in FIG. The cross section of thecavity 40 is parallel to the firsttransparent substrate 10, that is, the cross section is generally circular, of course, it can also be an ellipse or a shape similar to a circle; as shown in FIG. 5a, the shape of the side wall of thereflective cavity 40 can be The portion of an ellipsoid that is intercepted by two planes parallel to the minor axis direction. Of course, in specific implementation, the shape of the sidewall of thereflective cavity 40 can also be selected from the part of the sphere that is intercepted by two planes, or the part of other closed curved shapes, which is not limited here.

具体地，如图5a所示为一椭圆球的示意图，反射腔40的侧壁可以选取被两个虚线所示的圆形截取的部分。其中以上面的圆形虚线表示反射腔40的上开口即出光口43，其半径为R；以下面的圆形虚线表示反射腔40的下开口即入光口42，其半径为r；反射腔40的高度为h。Specifically, as shown in FIG. 5a , which is a schematic diagram of an ellipsoid, the side wall of thereflective cavity 40 can be selected from the part intercepted by the circles shown by the two dotted lines. The upper circular dotted line represents the upper opening of thereflective cavity 40, that is, thelight outlet 43, and its radius is R; the lower circular dashed line represents the lower opening of thereflective cavity 40, that is, thelight inlet 42, and its radius is r; the reflective cavity The height of 40 is h.

例如需要将入射的30°以外的光线收敛，即30°以外的入射光会都入射到椭圆曲面内即反射腔40内。则定义图5中的θ＝30°，则tan30°＝(R+r)÷h。例如选取h的数值为11μm，则可得到R+r＝6.35μm。For example, the incident light beyond 30° needs to be converged, that is, the incident light beyond 30° will all be incident into the elliptical curved surface, that is, thereflection cavity 40 . Then define θ=30° in FIG. 5 , then tan30°=(R+r)÷h. For example, if the value of h is selected as 11 μm, R+r=6.35 μm can be obtained.

同时根据椭圆曲线公式：x²/a²+y²/b²＝1，(a＜b)可知，同时由椭圆曲线公式可知：R²/a²＝1，R＝a，当选择R＝a＝5μm，则r＝1.35μm，则b＝11.4μm。即建立模型对应的椭圆公式为：x²/5²+y²/11.4²＝1。并且可以确定上述模型的参数定义如下：焦距：20.49，半长轴：11.4，半短轴：5，曲面系数：-0.80763，曲率0.456，偏心率0.89868。At the same time, according to the elliptic curve formula: x² /a² +y² /b² =1, (a<b), it can be known from the elliptic curve formula: R² /a² =1, R = a, when R = a=5 μm, then r=1.35 μm, then b=11.4 μm. That is, the ellipse formula corresponding to the established model is: x² /5² +y² /11.4² =1. And it can be determined that the parameters of the above model are defined as follows: focal length: 20.49, semi-major axis: 11.4, semi-minor axis: 5, surface coefficient: -0.80763, curvature 0.456, eccentricity 0.89868.

根据建立的模型模拟出光结果得到的出射光强度与视角的关系曲线如图5b所示，可以看出，采用上述参数建立的模型模拟出的结果(图中实曲线)中可以将原本(图中虚曲线)较宽泛的出射角度分布收敛近30°，且提升了中央角度区域内的亮度。The relationship curve between the output light intensity and the viewing angle obtained by simulating the light output results according to the established model is shown in Figure 5b. It can be seen that the simulation results (solid curves in the figure) of the model established by using the above parameters can The dashed curve) has a wider exit angle distribution that converges to nearly 30°, and improves the brightness in the central angle area.

值得注意的是，上述模型参数仅是举例说明，具体可以根据所需收敛的角度和其他工艺参数确定反射腔的参数，在此不做限定。It is worth noting that the above model parameters are only examples, and the parameters of the reflective cavity may be determined according to the required convergence angle and other process parameters, which are not limited here.

可选地，在本发明实施例提供的上述防窥模组中，如图3b所示的另一俯视图，各反射腔40之间可以紧密排列，且相邻两行或相邻两列的反射腔40之间错开排布。图3b以相邻两行的反射腔40之间错开排布为例进行说明。Optionally, in the above-mentioned anti-peep module provided by the embodiment of the present invention, as shown in another top view in FIG. 3b , thereflection cavities 40 may be closely arranged, and the reflections of two adjacent rows or two adjacent columns may be reflected. Thecavities 40 are staggered. FIG. 3b takes the staggered arrangement of thereflection cavities 40 in two adjacent rows as an example for illustration.

具体地，如图3b所示，各反射腔40之间紧密排列，指的是各反射腔的出光口43之间排列紧密，且行相邻和列相邻的两个出光口43之间相互接触。如图3b所示，将相邻两行的反射腔40之间错开排布，可以减小行相邻和列相邻的四个反射腔40之间的支撑基材30的体积。比较图3a和图3b可以看出，图3a中各反射腔40的出光口在行方向和列方向均对齐排列，图3b中各反射腔40的出光口43在列方向错开排列，可以降低四个相邻的出光口43之间的空隙，该空隙内填充支撑基材30。这样可以提高入射到各反射腔40的入射光比例，降低入射光损失，有利于提高防窥模组的出光亮度和防窥效果。Specifically, as shown in FIG. 3b , thereflective cavities 40 are closely arranged, which means that thelight outlets 43 of the reflective cavities are closely arranged, and the twolight outlets 43 adjacent to each other in the row and column are in contact with each other. . As shown in FIG. 3 b , the staggered arrangement of thereflection cavities 40 in two adjacent rows can reduce the volume of thesupport substrate 30 between the fourreflection cavities 40 in adjacent rows and columns. Comparing Fig. 3a and Fig. 3b, it can be seen that in Fig. 3a, the light exits of eachreflection cavity 40 are aligned in the row direction and the column direction. The space between the adjacentlight exit ports 43 is filled with thesupport substrate 30 . In this way, the proportion of incident light incident on eachreflection cavity 40 can be increased, the loss of incident light can be reduced, and the light output brightness and the anti-peeping effect of the anti-peeping module can be improved.

具体地，在本发明实施例提供的上述防窥模组中，支撑基材30可以选用透明树脂材料。但由于反射腔40的入光口42面积小于出光口43面积，因此会在第一透明基材10侧存在各入光口42之间的间隙；此外，为了保证在各个方位角均能达到相近的防窥视效果，反射腔40的横截面设置为圆形时，也会在第二透明基材20侧存在各出光口43之间的间隙。这样，就会存在入射光经过各入光口42之间的间隙，从各出光口43之间通过支撑基材30出射的光线，这部分光线的出射角度不可控，因此会影响防窥视效果。Specifically, in the above-mentioned anti-peep module provided by the embodiment of the present invention, the supportingsubstrate 30 may be selected from a transparent resin material. However, since the area of thelight entrance 42 of thereflective cavity 40 is smaller than the area of thelight exit 43, there will be gaps between the light entrances 42 on the side of the firsttransparent substrate 10; To improve the anti-peeping effect, when the cross section of thereflection cavity 40 is set to be circular, there will also be gaps between thelight exit ports 43 on the side of the secondtransparent substrate 20 . In this way, the incident light passes through the gaps between thelight entrances 42 and the light exits from the light exits 43 through thesupport substrate 30 . The exit angle of this part of the light is not controllable, thus affecting the anti-peeping effect.

基于此，在本发明实施例提供的上述防窥模组中，如图2a所示，支撑基材30可以为遮光材料，以起到遮挡入射到各入光口42之间的间隙的光线的作用。或者，如图2b所示，支撑基材30与第一透明基材10之间具有遮光层31，遮光层31在各反射腔40的入光口42处具有镂空结构即无图案，以起到遮挡入射到各入光口42之间的间隙的光线的作用，同时镂空结构可以保证入射光可以通过入光口42，并且，此时支撑基材30可以选用树脂材料，在此不做限定。具体地，该遮光材料和遮光层31可以选用具有吸光功能的材料，也可以选用具有反射功能的材料，即为反射材料。Based on this, in the above-mentioned anti-peep module provided by the embodiment of the present invention, as shown in FIG. 2 a , the supportingsubstrate 30 may be a light-shielding material, so as to shield the light entering the gaps between the light entrances 42 . effect. Alternatively, as shown in FIG. 2 b , alight shielding layer 31 is provided between thesupport substrate 30 and the firsttransparent substrate 10 , and thelight shielding layer 31 has a hollow structure at thelight entrance 42 of eachreflection cavity 40 , ie, no pattern, so as to achieve The function of blocking light entering the gaps between the light entrances 42, and the hollow structure can ensure that the incident light can pass through the light entrances 42, and the supportingsubstrate 30 can be made of resin material, which is not limited here. Specifically, the light-shielding material and the light-shielding layer 31 can be selected from materials with a light-absorbing function, or can be selected from materials with a reflective function, that is, reflective materials.

可选地，在本发明实施例提供的上述防窥模组中，为了起到平坦化的作用，如图2b至图2d所示，还可以包括：位于各反射腔40内的第三透明基材50。第三透明基材50可以起到平坦反射腔40的出光口43与第二透明基材20之间空隙的作用，并使入射至反射腔40的光线在第三透明基材50中传输，经过反射层41的反射后从出光口43出射。Optionally, in the above-mentioned anti-peep module provided by the embodiment of the present invention, in order to play a role of planarization, as shown in FIG. 2b to FIG. 2d, it may further include:Material 50. The thirdtransparent substrate 50 can play the role of a gap between thelight outlet 43 of the flatreflective cavity 40 and the secondtransparent substrate 20, so that the light incident on thereflective cavity 40 is transmitted in the thirdtransparent substrate 50, and passes through the thirdtransparent substrate 50. After reflection by thereflective layer 41 , the light is emitted from thelight outlet 43 .

具体地，在本发明实施例提供的上述防窥模组中，第三透明基材50可以选用树脂材料，也可以选用其他透光材料。并且，为了实现在防窥和普通显示模式之间的可切换功能，以满足不同使用环境的需求，第三透明基材50还可以选用聚合物分散液晶材料。Specifically, in the above-mentioned anti-peeping module provided by the embodiment of the present invention, the thirdtransparent substrate 50 can be selected from a resin material, or can be selected from other light-transmitting materials. In addition, in order to realize the switchable function between privacy protection and normal display mode to meet the requirements of different use environments, the thirdtransparent substrate 50 can also be selected from a polymer dispersed liquid crystal material.

可选地，在本发明实施例提供的上述防窥模组中，如图2c和图2d所示，第三透明基材50为聚合物分散液晶51(PDLC)时；防窥模组，还可以包括：位于第一透明基材10面向反射腔40一侧的第一透明电极层11，以及位于第二透明基材20面向反射腔40一侧的第二透明电极层21；其中，Optionally, in the above privacy protection module provided by the embodiment of the present invention, as shown in FIG. 2c and FIG. 2d , when the thirdtransparent substrate 50 is a polymer dispersed liquid crystal 51 (PDLC); the privacy protection module, further It may include: a first transparent electrode layer 11 located on the side of the firsttransparent substrate 10 facing thereflective cavity 40, and a second transparent electrode layer 21 located on the side of the secondtransparent substrate 20 facing thereflective cavity 40; wherein,

反射层41与第一透明电极层11相互绝缘，和/或，反射层41与第二透明电极层21相互绝缘；以避免第二透明电极层21通过反射层41与第一透明电极层11之间导通；Thereflective layer 41 and the first transparent electrode layer 11 are insulated from each other, and/or thereflective layer 41 and the second transparent electrode layer 21 are insulated from each other; conduction between;

如图2c所示，在普通模式下，聚合物分散液晶51的液晶轴随机排列对入射光的方向起到散射作用，此时第一透明电极层11与第二透明电极层21一般不加电压，当然也可以加载相同的电压而不产生电场，在此不做限定；如图2d所示，在防窥模式下，聚合物分散液晶51的液晶轴沿着第一透明电极层11与第二透明电极层21之间形成的电场排列，对入射光线的方向几乎不起作用，此时可以对第一透明电极层11或第二透明电极层21加载一定的电压，另一电极层处于接地状态。As shown in FIG. 2c , in the normal mode, the random arrangement of the liquid crystal axes of the polymer dispersedliquid crystal 51 scatters the direction of the incident light. At this time, the first transparent electrode layer 11 and the second transparent electrode layer 21 are generally not applied with voltage. , of course, the same voltage can also be applied without generating an electric field, which is not limited here; as shown in FIG. 2d, in the privacy protection mode, the liquid crystal axis of the polymer dispersedliquid crystal 51 is along the first transparent electrode layer 11 and the second The electric field arrangement formed between the transparent electrode layers 21 has little effect on the direction of incident light. At this time, a certain voltage can be applied to the first transparent electrode layer 11 or the second transparent electrode layer 21, and the other electrode layer is in a grounded state. .

具体地，通过第一透明电极层11和第二透明电极层21产生的电场，以及聚合物分散液晶51相互配合，可以实现防窥模式和普通模式的切换，以满足不同使用环境的需求。Specifically, the electric field generated by the first transparent electrode layer 11 and the second transparent electrode layer 21 and the polymer dispersedliquid crystal 51 cooperate with each other to switch between the privacy mode and the normal mode to meet the needs of different use environments.

值得注意的是，在本发明实施例提供的上述防窥模组中，如图2c和图2d所示，当在第一透明基材10一侧同时存在第一透明电极层11和遮光层31时，并不限定两者的层级位置关系，可以如图2c和图2d所示的，将第一透明电极层11设置于第一透明基材10与遮光层31之间，也可以将遮光层31设置于第一透明基材10与第一透明电极层11之间，在此不做限定。It is worth noting that, in the above-mentioned privacy protection module provided by the embodiment of the present invention, as shown in FIG. 2c and FIG. 2d , when the first transparent electrode layer 11 and thelight shielding layer 31 exist on the side of the firsttransparent substrate 10 at the same time 2c and 2d, the first transparent electrode layer 11 may be disposed between the firsttransparent substrate 10 and thelight shielding layer 31, or the light shielding layer may be 31 is disposed between the firsttransparent substrate 10 and the first transparent electrode layer 11, which is not limited herein.

可选地，在本发明实施例提供的上述防窥模组中，为了保证反射层41与第一透明电极层11相互绝缘，如图2c和图2d所示，还可以包括：位于反射腔40的入光口42与第一透明电极层11之间的第四透明基材60。这样，通过第四透明基材60的绝缘作用可以使反射层41与第一透明电极层11相互绝缘。Optionally, in the above-mentioned privacy protection module provided in the embodiment of the present invention, in order to ensure that thereflective layer 41 and the first transparent electrode layer 11 are insulated from each other, as shown in FIG. 2c and FIG. 2d , it may further include: The fourthtransparent substrate 60 between thelight entrance 42 and the first transparent electrode layer 11 . In this way, thereflective layer 41 and the first transparent electrode layer 11 can be insulated from each other by the insulating effect of the fourthtransparent substrate 60 .

具体地，在支撑基材30为透明基材时，如图2c和图2d所示，第四透明基材60与支撑基材30可以为一体结构，当然第四透明基材60与支撑基材30也可以为相互独立的结构，在此不做限定。Specifically, when the supportingsubstrate 30 is a transparent substrate, as shown in FIG. 2 c and FIG. 2 d , the fourthtransparent substrate 60 and the supportingsubstrate 30 may have an integral structure. Of course, the fourthtransparent substrate 60 and the supportingsubstrate 30 may also be mutually independent structures, which are not limited here.

可选地，在本发明实施例提供的上述防窥模组中，为了保证反射层41与第二透明电极层21相互绝缘，也可以在第二透明电极层21面向反射腔40的一侧设置透明绝缘层，在此不做赘述。Optionally, in the above-mentioned anti-peep module provided by the embodiment of the present invention, in order to ensure that thereflective layer 41 and the second transparent electrode layer 21 are insulated from each other, a side of the second transparent electrode layer 21 facing thereflective cavity 40 may also be provided. The transparent insulating layer is not described here.

基于同一发明构思，本发明实施例还提供了一种上述防窥模组的制作方法，由于该方法解决问题的原理与前述一种防窥模组相似，因此该方法的实施可以参见防窥模组的实施，重复之处不再赘述。Based on the same inventive concept, an embodiment of the present invention also provides a method for manufacturing the above-mentioned anti-peeping module. Since the principle of solving the problem of this method is similar to that of the aforementioned anti-peeping module, the implementation of this method can refer to the anti-peeping module The implementation of the group, the repetition will not be repeated.

本发明实施例提供的一种上述防窥模组的制作方法，包括以下步骤：An embodiment of the present invention provides a method for manufacturing the above-mentioned anti-peep module, comprising the following steps:

首先，在第一透明基材上形成支撑多个反射腔的支撑基材；First, forming a supporting substrate supporting a plurality of reflective cavities on the first transparent substrate;

之后，在各反射腔的侧壁形成反射层；then, forming a reflective layer on the sidewall of each reflective cavity;

最后，在反射腔上贴合第二透明基材。Finally, a second transparent substrate is attached on the reflective cavity.

例如，以图2a所示的结构为例，具体说明本发明实施例提供的上述制作方法，如图6所示，包括以下步骤：For example, taking the structure shown in FIG. 2 a as an example, the above-mentioned manufacturing method provided by the embodiment of the present invention is specifically described, as shown in FIG. 6 , including the following steps:

S601、在第一透明基材上压印出具有呈周期排列的多个半球形凹部的支撑基材；支撑材料和第一透明基材均可以采用树脂材料；半球形凹部作为反射腔；S601, embossing a supporting substrate having a plurality of hemispherical concave portions in a periodic arrangement on a first transparent substrate; both the supporting material and the first transparent substrate can be made of resin material; the hemispherical concave portions are used as reflective cavities;

S602、在反射腔的侧壁上蒸镀反射层；例如优选采用Al；S602, vapor-depositing a reflective layer on the sidewall of the reflective cavity; for example, Al is preferably used;

S603、在反射腔上贴合第二透明基材，也可以采用树脂材料。S603 , attaching a second transparent substrate on the reflective cavity, or a resin material may be used.

可选地，当需要防窥模组实现普通模式和防窥模式可切换时，例如图2c所示的结构时，在本发明实施例提供的上述制作方法中，如图7所示，在步骤S601在第一透明基材上形成支撑多个反射腔的支撑基材之前，还可以包括：Optionally, when the privacy protection module is required to realize the switch between the normal mode and the privacy protection mode, such as the structure shown in FIG. 2c, in the above-mentioned manufacturing method provided by the embodiment of the present invention, as shown in FIG. S601 may further include:

S600、在第一透明基材上形成第一透明电极；之后可以形成遮光层的图形；S600, forming a first transparent electrode on the first transparent substrate; then forming a pattern of the light-shielding layer;

并且，在步骤S603在反射腔上贴合第二透明基材之前，还可以包括：Furthermore, before attaching the second transparent substrate on the reflective cavity in step S603, it may further include:

S6021、在反射腔内填充聚合物分散液晶；S6021, filling the reflective cavity with polymer dispersed liquid crystal;

S6022、在第二透明基材上形成第二透明电极；S6022, forming a second transparent electrode on the second transparent substrate;

S603、在反射腔上贴合第二透明基材，具体包括：S603, attaching a second transparent substrate on the reflective cavity, which specifically includes:

S603’、将第二透明基材形成有第二透明电极的一侧与反射腔进行贴合。S603', laminating the side of the second transparent substrate on which the second transparent electrode is formed with the reflective cavity.

基于同一发明构思，本发明实施例还提供了一种显示装置，该显示装置可以为：手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。该显示装置的实施可以参见上述防窥模组的实施例，重复之处不再赘述。Based on the same inventive concept, an embodiment of the present invention also provides a display device, which can be any product or component with a display function, such as a mobile phone, a tablet computer, a TV, a monitor, a notebook computer, a digital photo frame, a navigator, etc. . For the implementation of the display device, reference may be made to the above-mentioned embodiments of the anti-peep module, and repeated descriptions will not be repeated here.

具体地，本发明实施例提供的显示装置，如图8所示，包括显示面板1，以及位于显示面板的出光面的本发明实施例提供的上述防窥模组2。Specifically, the display device provided by the embodiment of the present invention, as shown in FIG. 8 , includes a display panel 1 and the above-mentioned privacy protection module 2 provided by the embodiment of the present invention located on the light-emitting surface of the display panel.

可选地，在本发明实施例提供的上述显示装置中，显示面板1可以为液晶显示面板(LCD)，也可以为有机电致发光显示面板(OLED)，或者其他平面显示面板，在此不做限定。Optionally, in the above-mentioned display device provided in the embodiment of the present invention, the display panel 1 may be a liquid crystal display panel (LCD), an organic electroluminescence display panel (OLED), or other flat display panels, which are not described herein. Do limit.

本发明实施例提供的上述防窥模组、其制作方法及显示装置，包括位于相对而置的第一透明基材和第二透明基材之间的支撑基材，以及位于支撑基材内的多个反射腔；其中，各反射腔仅在侧壁具有反射层，各反射腔面向第一透明基材一侧具有入光口，各反射腔面向第二透明基材一侧具有出光口；反射层为向反射腔外部凸出的曲面；从入光口指向出光口的方向上，反射腔平行于第一透明基材的截面面积逐渐变大。由于反射层具有向反射腔外部凸出的曲面结构，使反射腔的形状类似于碗状，相对于现有的单一角度的反射光栅结构，可以将各个方向的入射光即方位角0～360°的入射光均收敛到中央角度区域，不受显示面板的观看方向变化的限制，可以实现全方位角度的防窥视效果。并且，类似于碗状的反射腔能够将更多大角度的入射光修正到接近垂直方向出射，使出射光集中在一个相对小的角度范围内，因此可以在保证防窥视的同时，提升中央角度区域的亮度。The above-mentioned anti-peep module, its manufacturing method, and display device provided by the embodiments of the present invention include a support base located between the first transparent base material and the second transparent base material opposite to each other, and a support base material located in the support base material. a plurality of reflective cavities; wherein, each reflective cavity only has a reflective layer on the side wall, each reflective cavity has a light entrance on the side facing the first transparent substrate, and each reflective cavity has a light outlet on the side facing the second transparent substrate; reflection The layer is a curved surface protruding to the outside of the reflection cavity; in the direction from the light entrance to the light exit, the cross-sectional area of the reflection cavity parallel to the first transparent substrate gradually increases. Because the reflective layer has a curved surface structure that protrudes to the outside of the reflective cavity, the shape of the reflective cavity is similar to a bowl shape. Compared with the existing single-angle reflective grating structure, the incident light in all directions, that is, the azimuth angle of 0 to 360°, can be The incident light is converged to the central angle area, which is not limited by the change of the viewing direction of the display panel, and can achieve anti-peeping effect from all angles. In addition, the bowl-shaped reflective cavity can correct more large-angle incident light to be emitted in a near-vertical direction, so that the outgoing light is concentrated in a relatively small angle range, so the central angle can be improved while ensuring anti-peeping. Brightness of the area.

显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention. Thus, provided that these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims (9)

1. A peep-proof module, comprising: the reflection type liquid crystal display comprises a first transparent substrate, a second transparent substrate, a supporting substrate and a plurality of reflection cavities, wherein the first transparent substrate and the second transparent substrate are oppositely arranged, the supporting substrate is positioned between the first transparent substrate and the second transparent substrate, and the plurality of reflection cavities are positioned in the supporting substrate; wherein,

each reflection cavity is only provided with a reflection layer on the side wall, one side, facing the first transparent substrate, of each reflection cavity is provided with a light inlet, and one side, facing the second transparent substrate, of each reflection cavity is provided with a light outlet;

the reflecting layer is a curved surface protruding towards the outside of the reflecting cavity;

in the direction from the light inlet to the light outlet, the area of the cross section of the reflection cavity parallel to the first transparent substrate is gradually increased;

the supporting base material is a shading material; or a light shielding layer is arranged between the supporting substrate and the first transparent substrate, and the light shielding layer is provided with a hollow structure at the light inlet of each reflection cavity.

2. The privacy module of claim 1, wherein the reflective cavity has a circular cross-section parallel to the first transparent substrate and the reflective cavity has a sidewall in the shape of an ellipsoid taken in two planes parallel to the minor axis.

3. The privacy module of claim 1, wherein the reflective cavities are closely spaced, and the reflective cavities in two adjacent rows or two adjacent columns are staggered.

4. The privacy module of any one of claims 1-3, further comprising: and the third transparent substrate is positioned in each reflecting cavity.

5. The privacy module of claim 4, wherein the third transparent substrate is a polymer dispersed liquid crystal;

the peep-proof module further comprises: the first transparent electrode layer is positioned on one side, facing the reflection cavity, of the first transparent substrate, and the second transparent electrode layer is positioned on one side, facing the reflection cavity, of the second transparent substrate; wherein,

the reflecting layer and the first transparent electrode layer are mutually insulated, and/or the reflecting layer and the second transparent electrode layer are mutually insulated;

in a normal mode, the liquid crystal axes of the polymer dispersed liquid crystal are randomly arranged; in the privacy mode, liquid crystal axes of the polymer dispersed liquid crystals are aligned along an electric field formed between the first transparent electrode layer and the second transparent electrode layer.

6. The privacy module of claim 5, further comprising: and the fourth transparent substrate is positioned between the light inlet of the reflection cavity and the first transparent electrode layer.

7. A method for manufacturing a privacy module as defined in any one of claims 1 to 6, comprising:

forming a supporting substrate supporting a plurality of reflective cavities on a first transparent substrate, the supporting substrate being a light-shielding material; or a light shielding layer is arranged between the support substrate and the first transparent substrate, and the light shielding layer is provided with a hollow structure at the light inlet of each reflection cavity;

forming a reflecting layer on the side wall of each reflecting cavity;

and attaching a second transparent substrate to the reflective cavity.

8. The method of claim 7, wherein prior to forming the support substrate on the first transparent substrate to support the plurality of reflective cavities, further comprising:

forming a first transparent electrode on the first transparent substrate;

before the second transparent substrate is attached to the reflection cavity, the method further comprises the following steps:

filling polymer dispersed liquid crystal in the reflecting cavity;

forming a second transparent electrode on the second transparent substrate;

the laminating second transparent substrate in reflection chamber specifically includes:

and attaching the side of the second transparent substrate on which the second transparent electrode is formed to the reflection cavity.

9. A display device, comprising a display panel, and the privacy module as claimed in any one of claims 1 to 8 located on a light-emitting surface of the display panel.

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