CN106646902B - Naked eye 3D display double-glued micro-cylindrical lens grating device and preparation method thereof - Google Patents

Abstract

Translated fromChinese

本发明涉及一种裸眼3D显示的双胶合微柱透镜光栅器件，其特征在于：包括基板、平凸透镜光栅阵列、凹凸透镜光栅阵列和填充层；所述平凸透镜光栅阵列设置在基板上表面，所述凹凸透镜光栅阵列的凹面与平凸透镜光栅阵列的凸面相互契合；所述填充层的内侧覆盖在凹凸透镜光栅阵列的凸面上，外侧保持平整；所述平凸透镜光栅阵列和凹凸透镜光栅阵列的折射率不同，且填充层的折射率小于平凸透镜光栅阵列与凹凸透镜光栅阵列的复合有效折射率；本发明还涉及一种制备方法。本发明起到了降低红绿蓝三色光弥散斑大小、减小离焦尺寸、增加中心光斑强度、降低串扰度以及提高横向和轴向分辨率的效果。

The invention relates to a double-glued micro-pillar lens grating device for naked-eye 3D display, which is characterized in that it includes a substrate, a plano-convex lens grating array, a concave-convex lens grating array, and a filling layer; the plano-convex lens grating array is arranged on the upper surface of the substrate, and the The concave surface of the concave-convex lens grating array fits with the convex surface of the plano-convex lens grating array; the inner side of the filling layer covers the convex surface of the concave-convex lens grating array, and the outer side remains flat; the refraction of the plano-convex lens grating array and the concave-convex lens grating array The ratios are different, and the refractive index of the filling layer is smaller than the composite effective refractive index of the plano-convex lens grating array and the concave-convex lens grating array; the invention also relates to a preparation method. The invention has the effects of reducing the size of the red, green and blue three-color light diffuse spots, reducing the defocus size, increasing the intensity of the central light spot, reducing the degree of crosstalk, and improving the horizontal and axial resolutions.

Description

Translated fromChinese

一种裸眼3D显示的双胶合微柱透镜光栅器件及其制备方法A double-glued microcylindrical lens grating device for naked-eye 3D display and its preparation method

技术领域technical field

本发明涉及一种裸眼3D显示的双胶合微柱透镜光栅器件及其制备方法。The invention relates to a double-glued micro-pillar lens grating device for naked-eye 3D display and a preparation method thereof.

背景技术Background technique

随着数字在图像处理技术和设备制造水平的进步，3D显示已经成为显示行业的一大流行趋势。柱透镜光栅液晶屏是裸眼3D显示屏的一种，但存在串扰度高，视点数少，清晰度有待提高等缺点，柱透镜光栅是由许多结构完全相同的微柱透镜平行排列而成微柱透镜阵列，其原理是利用柱透镜光栅单元的分光原理将焦平面上不同位置的两幅视差图像光折射到两个不同方向，使观看者左右眼分别看到两幅不同的图像，产生视差感，经视神经传导在大脑中融合产生立体图像。这类裸眼3D显示技术成本低，制作工艺简单，能够实现2D/3D切换，受到市场的欢迎。目前，普通的柱透镜单元当光线透过曲面透镜中时其发散方向会受到曲面透镜的调制，出射光线不能聚焦一点，而是形成一个较大椭圆立体弥散斑，造成单色光像差和红绿蓝三光色差，使垂直柱透镜柱体方向分辨率下降。With the advancement of digital image processing technology and equipment manufacturing level, 3D display has become a popular trend in the display industry. The lenticular lens grating LCD screen is a kind of naked-eye 3D display, but it has the disadvantages of high crosstalk, few viewpoints, and the definition needs to be improved. The principle of the lens array is to use the spectroscopic principle of the cylindrical lens grating unit to refract the light of two parallax images at different positions on the focal plane to two different directions, so that the left and right eyes of the viewer see two different images respectively, resulting in a sense of parallax , which are fused in the brain through optic nerve conduction to generate a stereoscopic image. This type of naked-eye 3D display technology has low cost, simple manufacturing process, and can realize 2D/3D switching, and is welcomed by the market. At present, the divergence direction of ordinary cylindrical lens units will be modulated by the curved surface lens when the light passes through the curved surface lens. The chromatic aberration of green and blue lights reduces the resolution in the direction of the vertical cylindrical lens cylinder.

发明内容Contents of the invention

有鉴于此，本发明的目的在于提供一种裸眼3D显示的双胶合微柱透镜光栅器件及其制备方法，起到了降低红绿蓝弥散斑大小、减小离焦尺寸、增加中心光斑强度、降低串扰度以及提高横向（即垂直柱透镜柱体方向）和轴向分辨率的效果。In view of this, the object of the present invention is to provide a double-glued micro-cylindrical lens grating device and a preparation method thereof for naked-eye 3D display, which can reduce the size of red, green and blue diffuse spots, reduce the defocus size, increase the central spot intensity, reduce The degree of crosstalk and the effect of improving the lateral (ie perpendicular to the cylinder of the lenticular lens) and axial resolution.

为实现上述目的，本发明采用如下技术方案：一种应用于裸眼3D显示的双胶合微柱透镜光栅器件，其特征在于：包括基板、平凸透镜光栅阵列、凹凸透镜光栅阵列和填充层；所述平凸透镜光栅阵列设置在基板上表面，所述凹凸透镜光栅阵列的凹面与平凸透镜光栅阵列的凸面相互契合；所述填充层的内侧覆盖在凹凸透镜光栅阵列的凸面上，外侧保持平整；所述平凸透镜光栅阵列和凹凸透镜光栅阵列的折射率不同，且填充层的折射率小于平凸透镜光栅阵列与凹凸透镜光栅阵列的复合有效折射率。In order to achieve the above object, the present invention adopts the following technical solution: a double-glued microcylindrical lens grating device applied to naked-eye 3D display, which is characterized in that it includes a substrate, a plano-convex lens grating array, a concave-convex lens grating array, and a filling layer; The plano-convex lens grating array is arranged on the upper surface of the substrate, and the concave surface of the meniscus lens grating array fits with the convex surface of the plano-convex lens grating array; the inner side of the filling layer covers the convex surface of the meniscus lens grating array, and the outer side remains flat; The refractive index of the plano-convex lens grating array and the concave-convex lens grating array are different, and the refractive index of the filling layer is smaller than the composite effective refractive index of the plano-convex lens grating array and the concave-convex lens grating array.

进一步的，所述平凸透镜光栅阵列为汇聚性质的正透镜。Further, the plano-convex lens grating array is a converging positive lens.

进一步的，所述凹凸透镜光栅阵列为发散性质的负透镜。Further, the meniscus lens grating array is a divergent negative lens.

进一步的，所述平凸透镜光栅阵列、凹凸透镜光栅阵列和填充层的材料为紫外线固化液态胶。Further, the material of the plano-convex lens grating array, the concave-convex lens grating array and the filling layer is ultraviolet curable liquid glue.

进一步的，所述紫外线固化液态胶包括有机硅橡胶、丙烯酸型树脂、不饱和聚酯、聚氨酯、环氧树脂。Further, the ultraviolet curable liquid glue includes silicone rubber, acrylic resin, unsaturated polyester, polyurethane, and epoxy resin.

一种裸眼3D显示的双胶合微柱透镜光栅器件的制备方法，其特征在于，包括以下步骤：A method for preparing a double-glued microcylindrical lens grating device for naked-eye 3D display, characterized in that it comprises the following steps:

步骤S1：在基板上涂覆第一层透明的紫外线固化液态胶，使用第一模具通过纳米压印技术将该紫外线固化液态胶刻蚀为平凸透镜光栅阵列并进行固化处理；Step S1: Coating the first layer of transparent UV-curable liquid adhesive on the substrate, using the first mold to etch the UV-curable liquid adhesive into a plano-convex lens grating array and performing curing treatment;

步骤S2：在所述平凸透镜光栅阵列上涂覆第二层透明的紫外线固化液态胶，使用第二模具通过纳米压印技术将该紫外线固化液态胶刻蚀为凹凸透镜光栅阵列并进行固化处理；Step S2: Coating a second layer of transparent UV-curable liquid glue on the plano-convex lens grating array, using a second mold to etch the UV-curable liquid glue into a concave-convex lens grating array and performing curing treatment;

步骤S3：在所述凹凸透镜光栅阵列上涂覆第三层透明的紫外线固化液态胶，使用第三模具通过纳米压印技术将该紫外线固化液态胶刻蚀为填充层并进行固化处理。Step S3: Coating a third layer of transparent UV-curable liquid glue on the concave-convex lens grating array, using the third mold to etch the UV-curable liquid glue into a filling layer by nanoimprint technology and performing curing treatment.

进一步的，所述固化处理为采用冷紫外光设备进行照射处理。Further, the curing treatment is irradiation treatment using cold ultraviolet light equipment.

进一步的，所述第一模具的压印面为与平凸透镜光栅阵列的凸面相契合的凹面。Further, the embossing surface of the first mold is a concave surface matching the convex surface of the plano-convex lens grating array.

进一步的，所述第二模具的压印面为与凹凸透镜光栅阵列的凸面相契合的凹面。Further, the embossing surface of the second mold is a concave surface matching the convex surface of the meniscus lens grating array.

进一步的，所述第三模具的压印面为平面。Further, the embossing surface of the third mold is plane.

本发明与现有技术相比具有以下有益效果：一方面，本发明采用的平凸透镜光栅阵列的折射率n1与凹凸透镜光栅阵列的折射率n2不同，曲率半径不同，能校正球差色差，形成较小的红绿蓝弥散斑，有效提高柱透镜在横向和轴向的分辨率；另一方面，本发明的平凸透镜光栅阵列和凹凸透镜光栅阵列的复合有效折射率大于填充层的折射率n3，形成了双胶合微柱透镜光栅器件的完整结构；最后，光栅的最外层透明薄膜填充材料，能有效防止双胶合微柱透镜光栅器件损坏。本发明同时制备标准模具、薄膜压制工艺，能生产大面积的双胶合微柱透镜光栅器件，能够节约生产成本，扩大产量；与现有普通微柱透镜光栅技术相比，本发明克服了普通微柱透镜光栅的固有缺陷、其平整度提高、生产效率集成、使用寿命长、光聚焦属性显著增强，3D显示综合效果提升。Compared with the prior art, the present invention has the following beneficial effects: on the one hand, the refractive index n1 of the plano-convex lens grating array used in the present invention is different from the refractive index n2 of the concave-convex lens grating array, and the radius of curvature is different, which can correct spherical aberration and chromatic aberration, forming Small red, green and blue diffuse spots can effectively improve the lateral and axial resolution of the cylindrical lens; on the other hand, the composite effective refractive index of the plano-convex lens grating array and the concave-convex lens grating array of the present invention is greater than the refractive index n3 of the filling layer , forming a complete structure of the double-glued micro-pillar lens grating device; finally, the outermost transparent film filling material of the grating can effectively prevent the damage of the double-glued micro-pillar lens grating device. The present invention prepares standard molds and film pressing processes at the same time, can produce large-area double-glued micro-pillar lens grating devices, can save production costs, and expand production; compared with the existing common micro-pillar lens grating technology, the present invention overcomes the common The inherent defects of the cylindrical lens grating, its flatness is improved, the production efficiency is integrated, the service life is long, the light focusing property is significantly enhanced, and the comprehensive effect of 3D display is improved.

附图说明Description of drawings

图1是本发明一实施例的结构示意图。Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

图2是本发明凹凸透镜光栅阵列的局部尺寸示意图。Fig. 2 is a schematic diagram of partial dimensions of the meniscus lens grating array of the present invention.

图3是普通光栅的光线调制示意图。Fig. 3 is a schematic diagram of light modulation of a common grating.

图4是本发明的光线调制示意图。Fig. 4 is a schematic diagram of light modulation in the present invention.

图5是本发明的制备流程示意图。Fig. 5 is a schematic diagram of the preparation process of the present invention.

图中：1-基板；2-平凸透镜光栅阵列；3-凹凸透镜光栅阵列；4-填充层；5-第一模具；6-第二模具；7-第三模具。In the figure: 1 - substrate; 2 - plano-convex lens grating array; 3 - concave-convex lens grating array; 4 - filling layer; 5 - first mold; 6 - second mold; 7 - third mold.

具体实施方式Detailed ways

下面结合附图及实施例对本发明做进一步说明。The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

请参照图1，本发明提供一种裸眼3D显示的双胶合微柱透镜光栅器件，其特征在于：包括基板1、平凸透镜光栅阵列2、凹凸透镜光栅阵列3和填充层4；所述平凸透镜光栅阵列设置在基板上表面，所述凹凸透镜光栅阵列的凹面与平凸透镜光栅阵列的凸面相互契合；所述填充层的内侧覆盖在凹凸透镜光栅阵列的凸面上，外侧保持平整；所述平凸透镜光栅阵列的折射率n1和凹凸透镜光栅阵列的折射率n2不同，且n1<n2；且填充层的折射率n3小于平凸透镜光栅阵列与凹凸透镜光栅阵列的复合有效折射率，保证了光栅的效果。Please refer to Fig. 1, the present invention provides a double-glued microcylindrical lens grating device for naked-eye 3D display, which is characterized in that: it includes asubstrate 1, a plano-convexlens grating array 2, a concave-convexlens grating array 3 and afilling layer 4; the plano-convex lens The grating array is arranged on the upper surface of the substrate, and the concave surface of the concave-convex lens grating array fits with the convex surface of the plano-convex lens grating array; the inner side of the filling layer covers the convex surface of the concave-convex lens grating array, and the outer side remains flat; the plano-convex lens The refractive index n1 of the grating array is different from the refractive index n2 of the concave-convex lens grating array, and n1<n2; and the refractive index n3 of the filling layer is smaller than the composite effective refractive index of the plano-convex lens grating array and the concave-convex lens grating array, which ensures the effect of the grating .

于本实施例中，所述平凸透镜光栅阵列为汇聚性质的正透镜；凹凸透镜光栅阵列为发散性质的负透镜。凹凸透镜光栅阵列的局部示意图请参照图2，中部的厚度h1小于边缘的厚度h2。In this embodiment, the plano-convex lens grating array is a converging positive lens; the concave-convex lens grating array is a diverging negative lens. Please refer to FIG. 2 for a partial schematic diagram of the meniscus grating array. The thickness h1 of the middle part is smaller than the thickness h2 of the edge.

于本实施例中，所述平凸透镜光栅阵列、凹凸透镜光栅阵列和填充层的材料为紫外线固化液态胶；包括有机硅橡胶、丙烯酸型树脂、不饱和聚酯、聚氨酯、环氧树脂。优选的，本实施例平凸透镜光栅阵列、凹凸透镜光栅阵列和填充层的材料采用聚甲基丙烯酸甲酯（PMMA）或聚对苯二甲酸乙二醇酯（PET）等透光材料。而基板采用玻璃、聚甲基丙烯酸甲酯（PMMA）或聚对苯二甲酸乙二醇酯（PET）等透光材料。In this embodiment, the material of the plano-convex lens grating array, the meniscus lens grating array and the filling layer is ultraviolet curable liquid glue; including silicone rubber, acrylic resin, unsaturated polyester, polyurethane, and epoxy resin. Preferably, the materials of the plano-convex lens grating array, the meniscus lens grating array and the filling layer in this embodiment are light-transmitting materials such as polymethyl methacrylate (PMMA) or polyethylene terephthalate (PET). The substrate is made of light-transmitting materials such as glass, polymethyl methacrylate (PMMA) or polyethylene terephthalate (PET).

图3为现有技术中普通光栅的光线调制示意图，普通光栅通过平凸透镜的调光，使得红光（R）的离焦（交点距离屏幕的距离）过大；而图4为本发明的光线调制示意图，通过平凸透镜和凹凸透镜的调制，将红光（R）、绿光（G）、蓝色（B）调制为绿光（G）、红光（R）、蓝色（B）的顺序；且实现红绿蓝三光在横向和纵向空间均具有相同焦距以消除光色散。Fig. 3 is a schematic diagram of light modulation of a common grating in the prior art. The light modulation of a common grating through a plano-convex lens makes the red light (R) defocus (the distance from the intersection point to the screen) too large; and Fig. 4 is the light of the present invention Schematic diagram of modulation, through the modulation of plano-convex lens and concave-convex lens, red light (R), green light (G), blue (B) is modulated into green light (G), red light (R), blue (B) order; and realize that the red, green, and blue lights have the same focal length in the horizontal and vertical spaces to eliminate light dispersion.

请参照图5，本实施例还提供一种裸眼3D显示的双胶合微柱透镜光栅器件的制备方法，包括以下步骤：Please refer to FIG. 5. This embodiment also provides a method for preparing a double-glued microcylindrical lens grating device for naked-eye 3D display, including the following steps:

步骤S1：在基板上涂覆第一层透明的紫外线固化液态胶，使用第一模具5通过纳米压印技术将该紫外线固化液态胶刻蚀为平凸透镜光栅阵列并进行固化处理；脱去第一模具，基板上形成一层透明薄膜即平凸透镜光栅阵列；所述第一模具的压印面为与平凸透镜光栅阵列的凸面相契合的凹面。此步骤中，紫外线固化液态胶固化后的折射率与基板材料基本一致。Step S1: Coating the first layer of transparent UV-curable liquid glue on the substrate, using thefirst mold 5 to etch the UV-curable liquid glue into a plano-convex lens grating array through nanoimprint technology and performing curing treatment; remove the first layer In the mould, a layer of transparent film, that is, a plano-convex lens grating array is formed on the substrate; the embossing surface of the first mold is a concave surface matching the convex surface of the plano-convex lens grating array. In this step, the refractive index of the cured UV-curable liquid adhesive is basically the same as that of the substrate material.

步骤S2：在所述平凸透镜光栅阵列上涂覆第二层透明的紫外线固化液态胶，使用第二模具6通过纳米压印技术将该紫外线固化液态胶刻蚀为凹凸透镜光栅阵列并进行固化处理；脱去第二模具，平凸透镜光栅阵列上形成一层透明薄膜即凹凸透镜光栅阵列；所述第二模具的压印面为与凹凸透镜光栅阵列的凸面相契合的凹面。此步骤中，紫外线固化液态胶固化后的折射率与平凸透镜光栅阵列不一致。Step S2: Coating a second layer of transparent UV-curable liquid glue on the plano-convex lens grating array, using thesecond mold 6 to etch the UV-curable liquid glue into a concave-convex lens grating array and curing Take off the second mold, and form a layer of transparent film on the plano-convex lens grating array, that is, the concave-convex lens grating array; the embossing surface of the second mold is a concave surface that matches the convex surface of the concave-convex lens grating array. In this step, the cured refractive index of the ultraviolet curable liquid glue is inconsistent with that of the plano-convex lens grating array.

步骤S3：在所述凹凸透镜光栅阵列上涂覆第三层透明的紫外线固化液态胶，使用第三模具7通过纳米压印技术将该紫外线固化液态胶刻蚀为填充层并进行固化处理；脱去第三模具，凹凸透镜光栅阵列上形成一层透明薄膜及填充层。填充层填平了凹凸透镜光栅阵列的凸面。所述第三模具的压印面为平面。Step S3: Coating a third layer of transparent UV-curable liquid glue on the concave-convex lens grating array, using thethird mold 7 to etch the UV-curable liquid glue into a filling layer through nanoimprint technology and performing curing treatment; Go to the third mold, and form a layer of transparent film and filling layer on the concave-convex lens grating array. The filling layer fills up the convex surface of the meniscus lens grating array. The embossing surface of the third mold is plane.

于本实施例中，所述固化处理为采用冷紫外光设备进行照射处理。In this embodiment, the curing treatment is irradiation treatment using cold ultraviolet light equipment.

以上所述仅为本发明的较佳实施例，凡依本发明申请专利范围所做的均等变化与修饰，皆应属本发明的涵盖范围。The above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope of the present invention.

Claims (1)

1. The utility model provides a two veneer microcolumn lens grating device of bore hole 3D demonstration which characterized in that: the device comprises a substrate, a plano-convex lens grating array, a concave-convex lens grating array and a filling layer; the plano-convex lens grating array is arranged on the upper surface of the substrate, and the concave surface of the concave-convex lens grating array is mutually matched with the convex surface of the plano-convex lens grating array; the inner side of the filling layer is covered on the convex surface of the concave-convex lens grating array, and the outer side of the filling layer is kept flat; the refraction indexes of the plano-convex lens grating array and the concave-convex lens grating array are different, and the refraction index of the filling layer is smaller than the composite effective refraction index of the plano-convex lens grating array and the concave-convex lens grating array;

the plano-convex lens grating array is a positive lens with converging property;

the concave-convex lens grating array is a negative lens with divergent properties;

the plano-convex lens grating array, the concave-convex lens grating array and the filling layer are made of ultraviolet curing liquid glue;

the ultraviolet curing liquid glue comprises organic silicon rubber, acrylic resin, unsaturated polyester, polyurethane and epoxy resin;

the refractive index n1 of the adopted plano-convex lens grating array is different from the refractive index n2 of the concave-convex lens grating array, and the curvature radius is different to correct spherical aberration, so that small red, green and blue diffuse spots are formed, and the resolution of the cylindrical lens in the transverse direction and the axial direction is effectively improved; on the other hand, the composite effective refractive index of the plano-convex lens grating array and the concave-convex lens grating array is larger than the refractive index n3 of the filling layer, so that the complete structure of the double-glued micro-column lens grating device is formed; the transparent film filling material at the outermost layer of the grating is used for effectively preventing the damage of the lens grating device of the double-glued micro-column lens;

the method comprises the steps of modulating red light, green light and blue light into green light, red light and blue light in sequence through modulation of a plano-convex lens and a concave-convex lens; the red, green and blue light has the same focal length in the transverse space and the longitudinal space so as to eliminate light dispersion;

the preparation method comprises the following steps:

step S1: coating a first layer of transparent ultraviolet curing liquid glue on a substrate, etching the ultraviolet curing liquid glue into a plano-convex lens grating array by using a first die through a nanoimprint technology, and curing; removing the first mould to form a layer of transparent film, namely a plano-convex lens grating array, on the substrate; the stamping surface of the first die is a concave surface matched with the convex surface of the plano-convex lens grating array; in the step, the refractive index of the ultraviolet curing liquid glue after curing is basically consistent with that of the substrate material;

step S2: coating a second layer of transparent ultraviolet curing liquid glue on the plano-convex lens grating array, etching the ultraviolet curing liquid glue into a concave-convex lens grating array by using a second die through a nanoimprint technology, and curing; removing the second mould to form a transparent film layer, namely a concave-convex lens grating array, on the plano-convex lens grating array; the stamping surface of the second die is a concave surface matched with the convex surface of the concave-convex lens grating array; in the step, the refractive index of the ultraviolet curing liquid glue after curing is inconsistent with that of the plano-convex lens grating array;

step S3: coating a third layer of transparent ultraviolet curing liquid glue on the meniscus lens grating array, etching the ultraviolet curing liquid glue into a filling layer by using a third mould through a nanoimprint technology, and curing; removing the third mould, and forming a layer of transparent film and a filling layer on the concave-convex lens grating array; the filling layer fills up the convex surface of the concave-convex lens grating array; the stamping surface of the third die is a plane.

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