阅读说明：本技术 一种可2d/3d同屏显示的不规则菱形透镜阵列及制备方法 (Irregular diamond lens array capable of realizing 2D/3D on-screen display and preparation method ) 是由 赵健 于 2020-09-28 设计创作，主要内容包括：本发明公开了一种可2D/3D同屏显示的不规则菱形透镜阵列及制备方法,包括相互交叉的第一柱透镜阵列、第二柱透镜阵列以及填充于两者之间的液晶材料；第一柱透镜阵列和第二柱透镜阵列的透镜表面镀有纳米级厚度的金属材质,作为金属电极；液晶材料通过两侧的金属材质作为电极驱动；通过给柱透镜阵列特定位置的电极通电或断电,以切换该区域液晶的开关状态；当液晶状态处于关闭时,进行3D显示；当液晶状态处于开时,进行2D显示。本发明首次提出了基于纳米镀膜的微透镜阵列与液晶材料组成的胶合透镜阵列结构及制备方法。结构简单,易加工,适合工业生产。(The invention discloses an irregular rhombic lens array capable of realizing 2D/3D on-screen display and a preparation method thereof, wherein the irregular rhombic lens array comprises a first cylindrical lens array, a second cylindrical lens array and a liquid crystal material filled between the first cylindrical lens array and the second cylindrical lens array which are mutually crossed; the lens surfaces of the first cylindrical lens array and the second cylindrical lens array are plated with metal materials with nanometer-scale thickness to serve as metal electrodes; the liquid crystal material is driven by taking metal materials at two sides as electrodes; switching the on-off state of the liquid crystal in the area by electrifying or powering off the electrode at a specific position of the cylindrical lens array; when the liquid crystal state is closed, performing 3D display; when the liquid crystal state is on, 2D display is performed. The invention provides a cemented lens array structure composed of a micro lens array based on a nano coating and a liquid crystal material and a preparation method thereof for the first time. Simple structure, easy processing and suitability for industrial production.)

1. The irregular rhombic lens array capable of realizing 2D/3D on-screen display is characterized by comprising a first cylindrical lens array (1), a second cylindrical lens array (2) and a liquid crystal material (3), wherein the first cylindrical lens array, the second cylindrical lens array and the liquid crystal material are mutually crossed;

the lens surfaces of the first cylindrical lens array (1) and the second cylindrical lens array (2) are plated with metal materials with nanometer-scale thickness to serve as metal electrodes, and the odd-row cylindrical lenses (12) and the even-row cylindrical lenses (11) are mutually separated and can be independently driven;

the liquid crystal material (3) is filled between the first cylindrical lens array (1) and the second cylindrical lens array (2) and is driven by taking metal materials at two sides as electrodes;

switching the on-off state of the liquid crystal in the area by electrifying or deenergizing the electrodes at specific positions of the first cylindrical lens array (1) and the second cylindrical lens array (2);

when the liquid crystal state is closed, the liquid crystal state is equivalent to a transparent material, and the irregular diamond lens formed by the two layers of cylindrical lenses can modulate the light pipes penetrating through the front surface and the rear surface of the irregular diamond lens to perform 3D display;

when the liquid crystal is on, it is equivalent to transparent glass, and thus the ability to modulate light is lost, and 2D display is performed.

2. The irregular diamond lens array capable of 2D/3D on-screen display according to claim 1, wherein the first cylindrical lens array (1) and the second cylindrical lens array (2) are made of transparent acrylic or quartz glass and have a cylindrical lens array with a certain focal length and a certain pitch width, and the lens sides of the two cylindrical lens arrays are inner sides and have a certain interval.

3. The method for preparing the irregular diamond lens array capable of displaying on the same screen in 2D/3D according to any one of claims 1 to 3, wherein the method comprises the following steps:

and S1, coating photoresist on the side of the cylindrical lenses of the first cylindrical lens array (1) and the second cylindrical lens array (2).

S2, covering the photoresist with a first mask plate with a period equal to the periods of the first cylindrical lens array (1) and the second cylindrical lens array (2), wherein the junction of the opaque area and the transparent area is superposed with the junction of the first cylindrical lens array (1) and the second cylindrical lens array (2); simultaneously, using ultraviolet light for exposure, removing the photoresist at the gap, and carrying out metal coating;

s3, removing the first mask plate, exposing with ultraviolet light, and removing the redundant photoresist, so that the odd and even row surfaces of the cylindrical lens array are plated with metal materials and have no metal materials respectively;

s4, covering the lens with a second mask plate with the same period, covering the non-transparent area with a lens without a metal coating, and entirely coating photoresist;

s5, removing the second mask plate, and performing metal coating on the cylindrical lens surfaces of the first cylindrical lens array (1) and the second cylindrical lens array (2);

and S6, exposing the substrate by ultraviolet light, and removing all the photoresist.

4. The method for preparing the irregular diamond-shaped lens array capable of realizing 2D/3D on-screen display according to claim 4, wherein the period of the first mask plate is equal to that of the cylindrical lens array, and a transparent area in a single period is smaller than an opaque area; the second mask period is equal to the period of the lenticular array, and the transparent regions within a single period are equal to the opaque regions.

5. The irregular diamond lens array capable of realizing 2D/3D on-screen display and the manufacturing method thereof according to claim 4, wherein the first mask plate in s2 has a boundary of an opaque region and a transparent region coinciding with a boundary of a cylindrical lens, and a boundary of the transparent region and the opaque region falling on one side of the cylindrical lens.

6. The irregular diamond lens array capable of 2D/3D on-screen display and the manufacturing method thereof according to claim 4, wherein the second mask plate in S4 has an opaque region covering the lens without metal coating, and the boundary between the opaque region and the transparent region is not overlapped with the boundary between the cylindrical lenses, but is slightly shifted to the side of the lens without metal coating, and the shift is equal to the difference between the opaque region and the transparent region in the first mask plate.

Technical Field

The invention belongs to the technical field of key optical devices for three-dimensional display, and particularly relates to an irregular diamond lens array capable of realizing 2D/3D on-screen display and a preparation method thereof.

Background

In recent years, three-dimensional imaging and display technologies have received increasing attention. Since the stereoscopic technology based on the microlens array has complete parallax, continuous viewpoints and no need of any observation glasses and special illumination, the technology stands out in the technical field of three-dimensional imaging and display, and is gradually developed into the most potential and promising autostereoscopic display technology.

The three-dimensional display system reproduces three-dimensional information of a scene completely and displays an image having a sense of depth. The viewer can directly see the distance of each object in the scene, and quickly and intuitively observe the three-dimensional spatial relationship of the objects in the scene, so that complete and accurate information is obtained. Just as the recording and reproduction of sound is continuously developed towards stereo and high fidelity, images are also developed from two dimensions to three dimensions and high resolution.

The microlens array is a core optical device of a stereoscopic display, and has important influence on the aspects of imaging quality, stereoscopic effect, stereoscopic data comfort and the like. The 2D/3D is switchable, even can be displayed on the same screen, and is a development direction in the naked eye 3D field. How to design and prepare the microlens array which can rapidly switch between 2D and 3D and has low cost becomes the focus of industry competition

Disclosure of Invention

The invention aims to solve the technical problem of the prior art, provides the irregular diamond lens array capable of realizing 2D/3D on-screen display and the preparation method thereof, and the irregular diamond lens array is simple in structure, easy to process and suitable for industrial production.

In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:

an irregular rhombic lens array capable of realizing 2D/3D on-screen display is characterized by comprising a first cylindrical lens array, a second cylindrical lens array and a liquid crystal material, wherein the first cylindrical lens array, the second cylindrical lens array and the liquid crystal material are mutually crossed;

the lens surfaces of the first cylindrical lens array and the second cylindrical lens array are plated with metal materials with nanometer-scale thickness to serve as metal electrodes, and the odd-row cylindrical lenses and the even-row cylindrical lenses are mutually separated and can be driven independently;

the liquid crystal material is filled between the first cylindrical lens array and the second cylindrical lens array and is driven by taking metal materials at two sides as electrodes;

switching the on-off state of the liquid crystal in the area by electrifying or deenergizing the electrodes at the specific positions of the first cylindrical lens array and the second cylindrical lens array;

when the liquid crystal state is closed, the liquid crystal state is equivalent to a transparent material, and the irregular diamond lens formed by the two layers of cylindrical lenses can modulate the light pipes penetrating through the front surface and the rear surface of the irregular diamond lens to perform 3D display;

when the liquid crystal is on, it is equivalent to transparent glass, and thus the ability to modulate light is lost, and 2D display is performed.

In order to optimize the technical scheme, the specific measures adopted further comprise:

the first cylindrical lens array and the second cylindrical lens array are made of transparent plastic materials or quartz glass.

The first cylindrical lens array and the second cylindrical lens array are cylindrical lens arrays with certain focal length and pitch width, and the lens sides of the two cylindrical lens arrays are inner sides and have certain intervals.

A preparation method of an irregular diamond lens array capable of realizing 2D/3D on-screen display comprises the following steps:

and S1, coating photoresist on the side of the cylindrical lenses of the first cylindrical lens array and the second cylindrical lens array.

S2, covering the photoresist with a first mask plate with a period equal to the periods of the first cylindrical lens array and the second cylindrical lens array, wherein the junction of the opaque area and the transparent area is superposed with the junction of the first cylindrical lens array and the second cylindrical lens array; simultaneously, using ultraviolet light for exposure, removing the photoresist at the gap, and carrying out metal coating;

s3, removing the first mask plate, exposing with ultraviolet light, and removing the redundant photoresist, so that the odd and even row surfaces of the cylindrical lens array are plated with metal materials and have no metal materials respectively;

s4, covering the lens with a second mask plate with the same period, covering the non-transparent area with a lens without a metal coating, and entirely coating photoresist;

s5, removing the second mask plate, and performing metal coating on the cylindrical lens surfaces of the first cylindrical lens array and the second cylindrical lens array;

and S6, exposing the substrate by ultraviolet light, and removing all the photoresist.

The period of the first mask plate is equal to that of the cylindrical lens array, and a transparent area in a single period is smaller than an opaque area; the second mask period is equal to the period of the lenticular array, and the transparent regions within a single period are equal to the opaque regions.

In the first mask in s2, the boundary between the opaque region and the transparent region coincides with the boundary between the cylindrical lens, and the boundary between the transparent region and the opaque region falls on one side of the cylindrical lens.

In the second mask in S4, the opaque region covers the lens without the metal coating, and the boundary between the opaque region and the transparent region does not coincide with the boundary of the cylindrical lens, but slightly shifts to the side of the lens without the metal coating, where the shift is equal to the difference between the opaque region and the transparent region in the first mask.

The invention has the following beneficial effects:

1. the invention firstly provides a cemented lens array structure composed of a micro lens array based on a nano coating and a liquid crystal material and a preparation method thereof, the production precision and the process complexity of the cylindrical lens array are far superior to those of a direct irregular prismatic lens array, and the method is beneficial to improving the process precision of the target lens array and reducing the production cost.

2. The 2D/3D switching can be effectively realized by the gluing structure of the double-layer cylindrical lens array and the liquid crystal, and the double-layer cylindrical lens array has the capability of independently driving the liquid crystal material corresponding to any cylindrical lens, so that free 2D/3D switching can be performed in any area of the micro-lens array panel.

Drawings

FIG. 1 is a diagram of a lens array of the present invention;

FIG. 2 is a flow chart of the preparation of the lens array electrode according to the present invention;

FIG. 3 is an overall block diagram of the present invention;

Detailed Description

Embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

Referring to fig. 1, the irregular diamond lens array capable of 2D/3D on-screen display according to the present invention includes a first cylindrical lens array 1, a second cylindrical lens array 2 and a liquid crystal material 3, which are mutually crossed;

the lens surfaces of the first cylindrical lens array 1 and the second cylindrical lens array 2 are plated with metal materials with nanometer-scale thickness and serve as metal electrodes, and gaps 10 are formed between the odd-row cylindrical lenses 12 and the even-row cylindrical lenses 11, so that independence between adjacent lenses is guaranteed, and independent driving is facilitated. (ii) a

The liquid crystal material 3 is filled between the first cylindrical lens array 1 and the second cylindrical lens array 2 and is driven by taking metal materials at two sides as electrodes;

switching the on-off state of the liquid crystal in the area by energizing or deenergizing the electrodes at specific positions of the first and second cylindrical lens arrays 1 and 2;

when the liquid crystal state is closed, the liquid crystal state is equivalent to a transparent material, and the irregular diamond lens formed by the two layers of cylindrical lenses can modulate the light pipes penetrating through the front surface and the rear surface of the irregular diamond lens to perform 3D display;

when the liquid crystal is in an on state, the refractive index of the whole structure is close to or consistent, and the liquid crystal is equivalent to transparent glass, so that the capacity of modulating light rays is lost, and 2D display is performed.

In an embodiment, the first cylindrical lens array 1 and the second cylindrical lens array 2 are made of transparent plastic materials such as acrylic or quartz glass.

The first cylindrical lens array 1 and the second cylindrical lens array 2 are cylindrical lens arrays with certain focal length and pitch width, and the lens sides of the two cylindrical lens arrays are inner sides and have certain intervals.

As shown in fig. 2, the metal electrodes in the diamond lens array are prepared as follows:

s1, coating a photoresist on the lenticular lens sides of the microlens arrays, i.e., the first lenticular lens array 1 and the second lenticular lens array 2. For each layer of the microlens array, the microlens array is a cylindrical microlens with a certain focal length and pitch width, and the material of the microlens array can be transparent plastic of an acrylic lamp or quartz glass and the like. Such a lenticular array is generally a plano-convex lens having a certain thickness. And coating a layer of photoresist on the convex surface of the substrate to make the surface of the substrate smooth.

S2, covering the photoresist with a first mask plate with a period equal to the period of the first cylindrical lens array 1 and the second cylindrical lens array 2, wherein the boundary of the opaque region and the transparent region of the first mask plate is superposed with the boundary of the first cylindrical lens array 1 and the second cylindrical lens array 2, and the boundary of the transparent region and the opaque region of the first mask plate falls on one side of the cylindrical lens; simultaneously, using ultraviolet light for exposure, removing the photoresist at the gap, and carrying out metal coating;

the period of the first mask plate is equal to that of the cylindrical lens array, and the transparent area in a single period is slightly smaller than the non-transparent area, so that the design is beneficial to generating odd-even row electrode gaps in the later period. Because the photoresist in the opaque area of the first mask plate is not corroded by ultraviolet light, the metal coating on the photoresist can be cleaned by cleaning. And the lens surface of the transparent area is plated with a metal film.

The first mask plate has opaque area and transparent area with their boundaries coinciding with the boundary of the cylindrical lens.

S3, removing the first mask plate, exposing with ultraviolet light, removing the redundant photoresist, at this time, the odd-even row surface of the cylindrical lens array is plated with metal material and has no metal material;

s4, covering the lens with a second mask plate with the same period, covering the non-transparent area with a lens without a metal coating, and entirely coating photoresist; the second mask period is equal to the period of the lenticular array, and the transparent regions within a single period are equal to the opaque regions.

In the second mask plate in S4, the opaque region covers the lens without the metal coating, and the boundary between the opaque region and the transparent region does not coincide with the boundary of the cylindrical lens, but slightly shifts to the side of the lens without the metal coating, where the shift is equal to the difference between the opaque region and the transparent region in the first mask plate.

S5, removing the second mask plate, and performing metal coating on the cylindrical lens surfaces of the first cylindrical lens array 1 and the second cylindrical lens array 2;

and S6, exposing the substrate by ultraviolet light, and removing all the photoresist.

Through the above steps, the odd and even rows of cylindrical lenses on the microlens array are respectively plated with metal films with gaps therebetween, and voltages can be respectively applied without mutual influence.

Fig. 3 is an overall structural view of the invention. In fig. 3, 100 is a monolithic microlens array, which is enlarged 200 and whose subunits are irregular diamond lenses 500. Wherein 300 and 400 are the horizontal and vertical direction electrode leads, respectively, by which the voltage of the cylindrical lens surface electrodes in any row or column, respectively, can be controlled.

The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may be made by those skilled in the art without departing from the principle of the invention.