WO2021233074A1

WO2021233074A1 - Manufacturing method of lens grating

Info

Publication number: WO2021233074A1
Application number: PCT/CN2021/089584
Authority: WO
Inventors: 刁鸿浩; 黄玲溪
Original assignee: 北京芯海视界三维科技有限公司; 视觉技术创投私人有限公司
Priority date: 2020-05-22
Filing date: 2021-04-25
Publication date: 2021-11-25
Also published as: CN113703180A; CN113703180B; TW202144815A

Abstract

A manufacturing method of a lens grating comprises: providing a substrate (101); and forming at least one light-blocking structure (103) and at least two lenses (102) on the substrate (101), and configuring such that the light-blocking structure (103) corresponds to a boundary region between adjacent lenses of the at least two lenses (102). The light-blocking structure (103) can effectively reduce or eliminate stray light generated at a boundary region between two lenses (102), thereby effectively improving the quality of an image projected via the boundary region.

Description

Lens grating manufacturing method

This application claims the priority of a Chinese patent application filed with the Chinese Intellectual Property Office with an application number of 202010439805.1 and the title of the invention "Method for Making Lens Grating" on May 22, 2020, the entire content of which is incorporated into this application by reference.

Technical field

This application relates to the field of optical technology, for example, to a method for manufacturing a lens grating.

Background technique

At present, lens gratings are widely used in 3D displays, and 3D displays based on lens gratings can obtain 3D viewing effects without using glasses.

In the process of implementing the embodiments of the present disclosure, it was found that there are at least the following problems in the related technology: due to the precision limitation of the manufacturing process, the surface of the lens will not be absolutely smooth, especially at the junction of the two lenses, it is easy to form a distorted groove When the light of the sub-pixel passes through the distortion area, the transmitted light cannot be controlled and will become stray light, causing crosstalk between the left and right eye images and reducing the quality of the image projected in this area.

Summary of the invention

In order to have a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not a general comment, nor is it intended to determine key/important components or describe the scope of protection of these embodiments, but serves as a prelude to the detailed description that follows.

The embodiment of the present disclosure provides a method for manufacturing a lens grating to solve the technical problem of image crosstalk caused by the distortion area between two lenses in the lens grating.

In some embodiments, a method for manufacturing a lens grating is provided, including:

Provide substrate;

At least one light-shielding structure and at least two lenses are formed on the substrate, so that the light-shielding structure corresponds to the boundary area of adjacent lenses among the at least two lenses.

In some embodiments, the substrate may be a monolithic substrate.

In some embodiments, forming at least one light-shielding structure and at least two lenses on the substrate may include:

At least two lenses are formed on one side of the substrate;

The at least one light shielding structure is formed on the substrate.

In some embodiments, forming at least one light-shielding structure on the substrate may include:

An opening is provided on the substrate corresponding to the boundary area of the adjacent lenses in the at least two lenses;

The light-shielding material is filled in the opening to form a light-shielding structure.

In some embodiments, providing an opening on the substrate corresponding to the boundary area of the adjacent lens of the at least two lenses may include:

The substrate corresponds to the boundary area of the adjacent lenses of the at least two lenses, and an opening is provided along the thickness direction of the substrate.

In some embodiments, providing the opening along the thickness direction of the substrate may include:

An opening is formed from the side of the substrate away from the at least two lenses, so that the opening extends into the corresponding lens, or extends into the substrate, or penetrates the substrate.

In some embodiments, filling the opening with a light-shielding material may include:

Fill the opening completely with shading material; or,

Partially fill the opening with a light-shielding material.

In some embodiments, after partially filling the light-shielding material in the opening, it may further include:

Fill the surface of the shading material with material.

Forming at least one light-shielding structure on the substrate;

At least two lenses are formed on one side of the substrate.

Setting an opening at the preset position of the substrate;

In some embodiments, providing an opening at a preset position of the substrate may include:

From one side of the substrate, an opening is provided along the thickness direction of the substrate, and the opening extends to the other side of the substrate or extends into the substrate.

Fill the opening completely with shading material; or,

Partially fill the opening with a light-shielding material.

Fill the surface of the shading material with material.

In some embodiments, forming at least two lenses on one side of the substrate may include:

At least two lenses are formed on either side of the substrate.

In some embodiments, after the light-shielding material is completely filled in the opening, it may further include:

On the surface of the substrate close to the opening end of the opening, a light-shielding material is formed corresponding to the opening area, so that the formed light-shielding structure partially protrudes from the surface of the substrate.

A light-shielding structure is formed on one side of the substrate, and the light-shielding structure completely protrudes from the surface of the substrate.

The light-shielding structure on the substrate protrudes from one side of the substrate, and at least two lenses are arranged so that the convex part of the light-shielding structure corresponds to the boundary area of the adjacent lenses of the at least two lenses.

In some embodiments, the substrate may be a partial substrate:

Forming at least one light shielding structure on the substrate may include:

Forming a light-shielding structure on one side of part of the substrate;

The substrate material is laid on the side of the partial substrate where the light-shielding structure is formed.

In some embodiments, the formed at least two lenses may include at least one of a concave lens and a convex lens.

In some embodiments, the lens may include at least one of a cylindrical lens and a spherical lens.

In some embodiments, the lens may include a cylindrical lens;

Forming at least two lenses on the substrate may include:

Part or all of the lenticular lenses are distributed on the substrate in parallel.

In some embodiments, the lens may include a spherical lens;

Forming at least two lenses on the substrate may include:

Part or all of the spherical lenses are arranged in an array on the substrate.

The manufacturing method of the lens grating provided by the embodiments of the present disclosure can achieve the following technical effects:

Solve the technical problem of image crosstalk caused by the distortion area between two lenses in the lens grating.

The above general description and the following description are only exemplary and explanatory, and are not used to limit the application.

Description of the drawings

One or more embodiments are exemplified by the accompanying drawings. These exemplified descriptions and drawings do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation, and among them:

FIG. 1 is a schematic flowchart of an embodiment of a method for manufacturing a lens grating according to an embodiment of the present disclosure;

2 is a schematic diagram of a cross-sectional structure of a substrate in a first embodiment of a method for manufacturing a lens grating according to an embodiment of the present disclosure;

Fig. 3 is a schematic view of the process of forming a light-shielding structure and a lens in the first embodiment of the method for manufacturing a lens grating according to an embodiment of the present disclosure;

4 is a schematic diagram of a cross-sectional structure of a lens formed in the first embodiment of the method for manufacturing a lens grating according to an embodiment of the present disclosure;

5 is a schematic diagram of a cross-sectional structure of forming a light-shielding structure in the first embodiment of the method for manufacturing a lens grating according to an embodiment of the present disclosure;

6 is a schematic cross-sectional structure diagram of an embodiment in which the lens formed in the method for manufacturing the lens grating provided by the embodiment of the present disclosure is a concave lens;

7 is a schematic cross-sectional structure diagram of an embodiment in which the lens formed in the method for manufacturing the lens grating provided by the embodiment of the present disclosure is a concave lens and a convex lens;

FIG. 8 is a schematic flow chart of forming a light-shielding structure in the first embodiment of a method for manufacturing a lens grating according to an embodiment of the present disclosure; FIG.

9A to 9C are schematic diagrams of the cross-sectional structure of the opening formed in the first embodiment of the manufacturing method of the lens grating provided by the embodiments of the present disclosure;

10A to 10B are schematic diagrams of a cross-sectional structure in which the opening is completely filled with light-shielding material in the first embodiment of the manufacturing method of the lens grating provided by the embodiment of the present disclosure;

11A to 11C are schematic diagrams of the cross-sectional structure of partially filling the light-shielding material in the opening in the first embodiment of the manufacturing method of the lens grating provided by the embodiment of the present disclosure;

12A to 12C are schematic diagrams of the cross-sectional structure of the first embodiment of the method for manufacturing a lens grating provided by an embodiment of the present disclosure after partially filling the opening with a light-shielding material and filling the substrate material;

13 is a schematic view of the process of forming a light-shielding structure and a lens in the second embodiment of the method for manufacturing a lens grating according to an embodiment of the present disclosure;

14 is a schematic diagram of a cross-sectional structure of a substrate formed in a second embodiment of a method for manufacturing a lens grating according to an embodiment of the present disclosure;

15 is a schematic view of the process of forming a light-shielding structure in the second embodiment of the method for manufacturing a lens grating according to an embodiment of the present disclosure;

16A to 16B are schematic diagrams of a cross-sectional structure of an opening formed on a substrate in a second embodiment of a method for manufacturing a lens grating according to an embodiment of the present disclosure;

17A to FIG. 17B are schematic cross-sectional structural diagrams of a substrate completely filled with light-shielding material in a second embodiment of a method for manufacturing a lens grating according to an embodiment of the present disclosure;

18A to 18B are schematic diagrams of a cross-sectional structure of a substrate partially filled with a light-shielding material in a second embodiment of a method for manufacturing a lens grating according to an embodiment of the present disclosure;

19A to 19B are schematic diagrams of the cross-sectional structure of the base material after the substrate is partially filled with light-shielding material in the second embodiment of the method for manufacturing a lens grating according to an embodiment of the present disclosure;

20A to 20E are schematic diagrams of a cross-sectional structure of a lens formed in a second embodiment of a method for manufacturing a lens grating according to an embodiment of the present disclosure;

21 is a schematic cross-sectional structure diagram of a second embodiment of a concave lens formed in a method for manufacturing a lens grating according to an embodiment of the present disclosure;

22 is a schematic cross-sectional structure diagram of a second embodiment of a concave lens and a convex lens formed in the method for manufacturing a lens grating according to an embodiment of the present disclosure;

23A to FIG. 23D are schematic cross-sectional structural diagrams of a light-shielding structure formed by etching a light-shielding layer in a second embodiment of a method for manufacturing a lens grating according to an embodiment of the present disclosure;

24 is a schematic diagram of a cross-sectional structure of a light-shielding layer formed on the surface of a substrate in a second embodiment of a method for manufacturing a lens grating according to an embodiment of the present disclosure;

25 is a schematic cross-sectional structure diagram of a light-shielding structure formed by etching a light-shielding layer formed on the surface of a substrate in a second embodiment of a method for manufacturing a lens grating according to an embodiment of the present disclosure;

26A to 26C are schematic diagrams of a cross-sectional structure of a lens formed in a second embodiment of a method for manufacturing a lens grating according to an embodiment of the present disclosure;

27 to 29 are schematic diagrams of the cross-sectional structure of the substrate formed in the third embodiment of the method for manufacturing a lens grating according to an embodiment of the present disclosure;

FIG. 30 is a schematic diagram of an arrangement of cylindrical lenses formed in a method for manufacturing a lens grating according to an embodiment of the present disclosure; FIG.

FIG. 31 is a schematic diagram of another arrangement of cylindrical lenses formed in the method for manufacturing a lens grating according to an embodiment of the present disclosure; FIG.

FIG. 32 is a schematic diagram of an arrangement of spherical lenses formed in a method for manufacturing a lens grating according to an embodiment of the present disclosure; FIG.

FIG. 33 is a schematic diagram of another arrangement of spherical lenses formed in the method for manufacturing a lens grating according to an embodiment of the present disclosure; FIG.

FIG. 34 is a schematic diagram of an arrangement of cylindrical lenses and spherical lenses in a method for manufacturing a lens grating provided by an embodiment of the present disclosure.

Reference signs:

101: substrate; 102: lens; 103: light-shielding structure; 104: opening; 105: substrate material;

201: substrate; 202: opening; 203: light-shielding structure; 204: substrate material; 205: lens; 206: light-shielding layer;

301: part of the substrate; 302: light-shielding layer; 303: light-shielding structure; 304: substrate material;

401: substrate; 4021: cylindrical lens; 4022: spherical lens.

Detailed ways

In order to have a more detailed understanding of the features and technical content of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a number of details are used to provide a sufficient understanding of the disclosed embodiments. However, without these details, one or more embodiments can still be implemented. In other cases, in order to simplify the drawings, well-known structures and devices may be simplified for display.

Referring to FIG. 1, FIG. 1 is a schematic flowchart of an embodiment of a method for manufacturing a lens grating according to an embodiment of the present disclosure. In some embodiments, a method for manufacturing a lens grating is provided, including:

S101, provide a substrate;

S102, forming at least one light-shielding structure and at least two lenses on the substrate, so that the light-shielding structure corresponds to a boundary area between adjacent lenses of the at least two lenses.

Referring to FIG. 2, FIG. 2 is a schematic diagram of a cross-sectional structure of a substrate in the first embodiment of a method for manufacturing a lens grating provided by an embodiment of the present disclosure. In some embodiments, in S101, the substrate 101 provided may be an integral substrate.

Referring to FIGS. 3 to 5, FIG. 3 is a schematic view of the process of forming a light-shielding structure and a lens in the first embodiment of a method for manufacturing a lens grating provided by an embodiment of the present disclosure, and FIG. 4 is a method for manufacturing a lens grating provided by an embodiment of the present disclosure A schematic diagram of a cross-sectional structure of a lens formed in the first embodiment. FIG. 5 is a schematic diagram of a cross-sectional structure of the light-shielding structure formed in the first embodiment of the method for manufacturing a lens grating provided by an embodiment of the present disclosure. In some embodiments, in S102, Forming at least one light-shielding structure and at least two lenses on the substrate may include:

S1021, forming at least two lenses 102 on one side of the substrate 101;

S1022, forming at least one light-shielding structure 103 on the substrate 101.

In some embodiments, the at least two lenses 102 formed on one surface of the substrate 101 may include at least one of a concave lens and a convex lens.

Referring to FIG. 4, FIG. 4 is a schematic diagram of a cross-sectional structure of a lens formed in the first embodiment of a method for manufacturing a lens grating provided by an embodiment of the present disclosure. The at least two lenses 102 formed on one surface of the substrate 101 may include convex lenses.

Referring to FIG. 6, FIG. 6 is a schematic cross-sectional structure diagram of an embodiment in which the lens formed in the lens grating manufacturing method provided by the embodiment of the present disclosure is a concave lens. The at least two lenses 102 formed on one surface of the substrate 101 may include concave lenses.

Referring to FIG. 7, FIG. 7 is a schematic cross-sectional structure diagram of an embodiment in which the lens formed in the method for manufacturing a lens grating provided by an embodiment of the present disclosure is a concave lens and a convex lens. The at least two lenses 102 formed on one side of the substrate 101 may include convex lenses. And concave lens.

In the following description, the lens 102 is a convex lens as an example.

Referring to FIG. 8, FIG. 8 is a schematic view of the process of forming a light-shielding structure in the first embodiment of a method for manufacturing a lens grating according to an embodiment of the present disclosure. In some embodiments, in S1022, at least one light-shielding structure is formed on a substrate, including :

S1022a, setting an opening on the substrate corresponding to the boundary area of the adjacent lenses among the at least two lenses;

S1022b: Fill the opening with a light-shielding material to form a light-shielding structure.

In some embodiments, referring to FIGS. 9A to 9C, FIGS. 9A to 9C are schematic diagrams of the cross-sectional structure of openings formed in the first embodiment of the method for manufacturing a lens grating provided by an embodiment of the present disclosure, corresponding to at least two openings on the substrate. The boundary area between adjacent lenses in each lens is provided with an opening, including:

In some embodiments, providing the opening along the thickness direction of the substrate includes:

Referring to FIG. 9A, in some embodiments, an opening 104 is formed on the side of the substrate 101 away from the at least two lenses 102, and the formed opening 104 extends into the corresponding lens 102.

Referring to FIG. 9B, in some embodiments, an opening 104 is formed on the side of the substrate 101 away from the at least two lenses 102, and the formed opening 104 extends into the substrate 101.

Referring to FIG. 9C, in some embodiments, an opening 104 is formed on the side of the substrate 101 away from the at least two lenses 102, and the formed opening 104 penetrates the substrate 101.

Referring to FIGS. 10A to 11C, FIGS. 10A to 10B are schematic diagrams of the cross-sectional structure of completely filling the light-shielding material in the opening in the first embodiment of the manufacturing method of the lens grating provided by the embodiments of the present disclosure, and FIGS. 11A to 11C are the schematic diagrams of the present disclosure. The manufacturing method of the lens grating provided by the embodiment is a schematic diagram of the cross-sectional structure of partially filling the light-shielding material in the opening in the first embodiment. In some embodiments, filling the light-shielding material in the opening includes:

Fill the opening completely with shading material; or,

Partially fill the opening with a light-shielding material.

Specifically, referring to FIG. 10A, the opening 104 extends into the lens 102, the opening 104 is completely filled with light-shielding material, and the formed light-shielding structure 103 extends into the lens 102.

Referring to FIG. 10B, the opening 104 extends into the substrate 101, the light shielding material is completely filled in the opening 104, and the formed light shielding structure 103 extends into the substrate 101.

Referring to FIG. 5, the opening 104 penetrates through the substrate 101, and the light shielding material is completely filled in the opening 104, and the formed light shielding structure 103 penetrates the substrate 101.

Referring to FIG. 11A, the opening 104 extends into the lens 102, and a light-shielding material is partially filled in the opening 104 to form a light-shielding structure 103.

Referring to FIG. 11B, the opening 104 extends into the substrate 101, and a light-shielding material is partially filled in the opening 104 to form a light-shielding structure 103.

Referring to FIG. 11C, the opening 104 penetrates through the substrate 101, and a light shielding material is partially filled in the opening 104 to form a light shielding structure 103.

In some embodiments, referring to FIGS. 12A to 12C, FIGS. 12A to 12C are the cross-sectional structure of the substrate material after the opening is partially filled with light-shielding material in the first embodiment of the method for manufacturing a lens grating provided by an embodiment of the present disclosure The schematic diagram, after partially filling the light-shielding material in the opening, it also includes:

Fill the surface of the shading material with material.

In some embodiments, the material filled on the surface of the light-shielding material is a substrate material.

Referring to FIG. 12A, the opening 104 extends into the lens 102, a light shielding material is partially filled in the opening 104, and the substrate material 105 is filled after the light shielding structure 103 is formed.

Referring to FIG. 12B, the opening 104 extends into the substrate 101, a light shielding material is partially filled in the opening 104, and the substrate material 105 is filled after the light shielding structure 103 is formed.

Referring to FIG. 12C, the opening 104 penetrates the substrate 101, and the light shielding material is partially filled in the opening 104. After the light shielding structure 103 is formed, the substrate material 105 is filled.

In some embodiments, in some embodiments, the light-shielding material of each light-shielding structure 103 may be the same or different.

In some embodiments, the light-shielding material of the light-shielding structure 103 protruding from the surface of the substrate 101 and the light-shielding material on the inner part of the substrate 101 may be the same or different.

Referring to FIG. 13, FIG. 13 is a schematic view of the process of forming a light-shielding structure and a lens in the second embodiment of the method for manufacturing a lens grating according to an embodiment of the present disclosure. In some embodiments, in S102, at least one light-shielding structure is formed on the substrate And at least two lenses, including:

S102A, forming at least one light-shielding structure on the substrate;

S102B, forming at least two lenses on one side of the substrate.

Referring to FIG. 14, FIG. 14 is a schematic diagram of a cross-sectional structure of a substrate formed in a second embodiment of a method for manufacturing a lens grating according to an embodiment of the present disclosure. First, an overall substrate 201 is provided.

Referring to FIG. 15, FIG. 15 is a schematic flow diagram of forming a light-shielding structure in the second embodiment of a method for manufacturing a lens grating according to an embodiment of the present disclosure. In some embodiments, in S102A, at least one light-shielding structure is formed on a substrate, including :

S102a, setting an opening at a preset position of the substrate;

S102b: Fill the opening with a light-shielding material to form a light-shielding structure.

Referring to FIGS. 16A to 16B, FIGS. 16A to 16B are schematic diagrams of the cross-sectional structure of openings formed on the substrate in the second embodiment of the method for manufacturing a lens grating provided by an embodiment of the present disclosure. In some embodiments, the substrate 201 is preformed Design the location of the opening, and set the opening in the preset position of the substrate, including:

Referring to FIG. 16A, from one side of the substrate 201 along the thickness direction, an opening 202 is provided, and the opening 202 extends to the other side of the substrate 201.

Referring to FIG. 16B, from one side of the substrate 201 along the thickness direction, an opening 202 is provided, and the opening 202 extends into the substrate 201.

In some embodiments, filling the opening with a light-shielding material includes:

Fill the opening completely with shading material; or,

Partially fill the opening with a light-shielding material.

In some embodiments, FIGS. 17A to 17B are schematic diagrams of the cross-sectional structure of the substrate completely filled with light-shielding material in the second embodiment of the manufacturing method of the lens grating provided by the embodiments of the present disclosure. Referring to FIG. 17A, the opening 202 extends to the substrate 201 On the other side of the opening 202, the light-shielding material is completely filled to form a light-shielding structure 203.

Referring to FIG. 17B, the opening 202 extends into the substrate 201, and the opening 202 is completely filled with a light-shielding material to form a light-shielding structure 203.

18A to 18B are schematic diagrams of the cross-sectional structure of the substrate partially filled with light-shielding material in the second embodiment of the manufacturing method of the lens grating provided by the embodiments of the present disclosure. Referring to FIG. 18A, the opening 202 extends to the other side of the substrate 201, and the A light shielding material is partially filled in 202 to form a light shielding structure 203.

Referring to FIG. 18B, the opening 202 extends into the substrate 201, and a light-shielding material is partially filled in the opening 202 to form a light-shielding structure 203.

In some embodiments, after partially filling the light-shielding material in the opening, the method further includes:

Fill the surface of the shading material with material.

19A to 19B are schematic diagrams of the cross-sectional structure of the substrate after partially filling the light-shielding material with the base material in the second embodiment of the manufacturing method of the lens grating provided by the embodiments of the present disclosure. Referring to FIG. 19A, the opening 202 extends to another part of the substrate 201 On one side, the opening 202 is partially filled with a light-shielding material, and after the light-shielding structure 203 is formed, a substrate material 204 is filled on the surface of the light-shielding material.

Referring to FIG. 19B, the opening 202 extends into the substrate 201, and a light shielding material is partially filled in the opening 202. After the light shielding structure 203 is formed, the substrate material 204 is filled on the surface of the light shielding material.

In some embodiments, forming at least two lenses on one side of the substrate includes:

At least two lenses are formed on either side of the substrate.

Referring to FIGS. 20A to 20E, FIGS. 20A to 20E are schematic diagrams of the cross-sectional structure of the lens formed in the second embodiment of the method for manufacturing a lens grating provided by an embodiment of the present disclosure. The formed substrate 201 can be formed on any side of the substrate 201 The at least two lenses 205.

Referring to FIGS. 20A to 20E, after the substrate 201 with the light shielding structure 203 is formed, the at least two lenses 205 formed on any side of the substrate 201 may include convex lenses.

Referring to FIG. 21, FIG. 21 is a schematic cross-sectional structure diagram of a second embodiment of a concave lens formed in a method for manufacturing a lens grating according to an embodiment of the present disclosure. The at least two lenses 205 formed on any side of the substrate 201 may include concave lenses. .

Referring to FIG. 22, FIG. 22 is a schematic cross-sectional structure diagram of a second embodiment of a concave lens and a convex lens formed in the lens grating manufacturing method provided by an embodiment of the present disclosure. At least two lenses 205 formed on any side of the substrate 201 can be Including concave lens and convex lens.

In the following description, the lens 205 is a convex lens.

In some embodiments, referring to FIGS. 23B and 23D, FIGS. 23B and 23D are schematic diagrams of the light-shielding structure protruding from the surface of the substrate. After the light-shielding material is completely filled in the opening, the method further includes:

On the surface of the substrate 201 close to the opening end of the opening 202, a light-shielding material is formed corresponding to the opening area, so that the formed light-shielding structure 203 partially protrudes from the surface of the substrate 201.

In some embodiments, the portion of the light shielding structure 201 protruding from the surface of the substrate 201 can be formed by etching, inkjet, imprinting, screen printing, etc. The following is an example of etching:

Referring to FIGS. 23A to 23D, FIGS. 23A to 23D are schematic diagrams of the cross-sectional structure of the light-shielding structure formed by etching the light-shielding layer in the second embodiment of the method for manufacturing a lens grating according to an embodiment of the present disclosure. After the light-shielding material is completely filled in the opening ,Also includes:

On the surface of the substrate 201 close to the opening end of the opening 202, a light-shielding material is coated, and a light-shielding layer 206 is provided;

The light-shielding layer 206 is etched to retain the light-shielding material corresponding to the opening area, so that the formed light-shielding structure 203 partially protrudes from the surface of the substrate.

Referring to FIG. 25, FIG. 25 is a schematic cross-sectional structure diagram of a light-shielding structure formed on the surface of a substrate in a second embodiment of a method for manufacturing a lens grating according to an embodiment of the present disclosure. At least one light-shielding structure is formed on the substrate, including:

A light-shielding structure 203 is formed on one side of the substrate 201, and the light-shielding structure 203 completely protrudes from the surface of the substrate 201.

In some embodiments, the light-shielding structure 201 completely protrudes from the surface of the substrate 201 and can be formed by etching, ink-jet, imprinting, etc. The following is an example of etching:

In some embodiments, referring to FIGS. 24 and 25, FIG. 24 is a schematic diagram of a cross-sectional structure of a light shielding layer formed on the surface of a substrate in the second embodiment of a method for manufacturing a lens grating provided by an embodiment of the present disclosure. FIG. 25 is an embodiment of the present disclosure. In the second embodiment of the method for manufacturing a lens grating provided, a cross-sectional structure diagram of a light-shielding structure formed on the surface of a substrate, forming at least one light-shielding structure on the substrate, includes:

Coat a light-shielding material on one side of the substrate 201, and provide a light-shielding layer 206;

The light-shielding layer 206 is etched, and the light-shielding material at a preset position is reserved to form a light-shielding structure 203, which completely protrudes from the surface of the substrate.

In some embodiments, the light-shielding material of each light-shielding structure 203 may be the same or different.

In some embodiments, the light-shielding material of the light-shielding structure 203 protruding from the surface of the substrate 201 and the light-shielding material on the inner part of the substrate 201 may be the same or different.

In some embodiments, referring to FIGS. 26A to 26C, FIGS. 26A to 26C are schematic diagrams of the cross-sectional structure of the lens formed in the second embodiment of the method for manufacturing a lens grating provided by an embodiment of the present disclosure. For the light-shielding structure 203 on the substrate 201 In the case of protruding from the substrate 201, at least two lenses are formed on one side of the substrate, including:

On the substrate 201, the light-shielding structure 203 protrudes from one surface of the substrate, and at least two lenses 205 are provided, so that the protruding part of the light-shielding structure 203 corresponds to the boundary area of the adjacent lenses of the at least two lenses 205.

Referring to FIGS. 28 to 29, FIGS. 28 and 29 are schematic diagrams of the cross-sectional structure of the substrate formed in the third embodiment of the lens grating manufacturing method provided by the embodiments of the present disclosure. In some embodiments, the substrate may be a part of the substrate:

Forming at least one light shielding structure on the substrate may include:

A light-shielding structure 303 is formed on one side of part of the substrate 301;

The substrate material 304 is laid on the side of the partial substrate 301 where the light-shielding structure 303 is formed.

In some embodiments, the light-shielding structure 303 formed on part of the substrate 301 may be formed by etching, inkjet, imprinting, etc. The following is an example of etching:

In some embodiments, referring to FIGS. 27 to 29, FIGS. 27 to 29 are schematic diagrams of the cross-sectional structure of the substrate formed in the third embodiment of the method for manufacturing the lens grating provided by the embodiments of the present disclosure. The substrate provided is part of the substrate 301 :

At least one light-shielding structure is formed on the substrate, including:

Coating a light-shielding material on one side of a part of the substrate 301 to form a light-shielding layer 302;

Etch the light-shielding layer 302 to form a light-shielding structure 303;

The substrate material 304 is laid on the side of the partial substrate 301 where the light-shielding structure 303 is formed, and then the at least two lenses can be provided on any side of the substrate.

In some embodiments, referring to FIGS. 30 to 34, FIG. 30 is a schematic diagram of an arrangement of lenticular lenses in a method for manufacturing a lens grating provided by an embodiment of the present disclosure, and FIG. 31 is a schematic diagram of a lens grating provided by an embodiment of the present disclosure. A schematic diagram of another arrangement of cylindrical lenses formed in the manufacturing method. FIG. 32 is a schematic diagram of an arrangement of spherical lenses in the manufacturing method of a lens grating provided in an embodiment of the present disclosure. FIG. 33 is a lens grating provided in an embodiment of the present disclosure. A schematic diagram of another arrangement of spherical lenses formed in the manufacturing method of the present disclosure. FIG. 34 is a schematic diagram of an arrangement of cylindrical lenses and spherical lenses in the manufacturing method of lens grating provided by an embodiment of the present disclosure. The lenses are arranged on the substrate 401. 402 includes at least one of a cylindrical lens 4021 and a spherical lens 4022.

In some embodiments, referring to FIGS. 30 and 31, the lens 402 includes a cylindrical lens 4021;

Forming at least two lenses on the substrate 401 includes:

Part or all of the cylindrical lenses 4021 are distributed in parallel on the substrate.

In some embodiments, referring to FIGS. 32 and 33, the lens 402 includes a spherical lens 4022;

Forming at least two lenses on the substrate 401 includes:

Part or all of the spherical lenses 4022 are arranged in an array on the substrate.

Referring to FIG. 34, at least two lenses including a cylindrical lens 4021 and a spherical lens 4022 are formed on the substrate 401.

In some embodiments, the plurality of cylindrical lenses 4021 may be cylindrical concave lenses, cylindrical convex lenses, or a combination of cylindrical convex lenses and cylindrical concave lenses. The plurality of spherical lenses 4022 may be spherical concave lenses, spherical convex lenses, or a combination of spherical concave lenses and spherical convex lenses. In addition, the plurality of lenses may also be a combination of a cylindrical convex lens and a spherical convex lens, a combination of a cylindrical convex lens and a spherical concave lens, a combination of a cylindrical concave lens and a spherical concave lens, and a combination of a cylindrical concave lens and a spherical convex lens. The number and type of lenses 102 are set according to actual requirements.

In some embodiments, whether the lens includes a cylindrical lens, a spherical lens, or has other shapes, at least one curve on the surface of the lens may be circular or non-circular in a macroscopic view, for example: elliptical, hyperbolic, parabolic, Wait. Optionally, at least one curve on the surface of the lens may be in a non-circular shape such as a polygon in a microscopic view. Optionally, the shape of the lens may be determined according to actual conditions such as process requirements, for example: the shape of the surface of the lens.

The manufacturing method of the lens grating provided by the embodiments of the present disclosure and the formed light-shielding structure of the lens grating can effectively reduce or eliminate the stray light generated at the junction of the two lenses, thereby effectively improving the quality of the image projected in this area.

The above description and drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments only represent possible changes. Unless explicitly required, the individual components and functions are optional, and the order of operations can be changed. Parts and features of some embodiments may be included in or substituted for parts and features of other embodiments. The scope of the embodiments of the present disclosure includes the entire scope of the claims and all available equivalents of the claims. When used in this application, although the terms "first", "second", etc. may be used in this application to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, without changing the meaning of the description, the first element can be called the second element, and similarly, the second element can be called the first element, as long as all occurrences of the "first element" are renamed consistently and all occurrences "Second component" can be renamed consistently. The first element and the second element are both elements, but they may not be the same element. Moreover, the terms used in this application are only used to describe the embodiments and are not used to limit the claims. As used in the description of the embodiments and claims, unless the context clearly indicates, the singular forms "a" (a), "an" (an) and "the" (the) are intended to also include plural forms . Similarly, the term "and/or" as used in this application refers to any and all possible combinations that include one or more of the associated lists. In addition, when used in this application, the term "comprise" and its variants "comprises" and/or including (comprising) and the like refer to the stated features, wholes, steps, operations, elements, and/or The existence of components does not exclude the existence or addition of one or more other features, wholes, steps, operations, elements, components, and/or groups of these. If there are no more restrictions, the element defined by the sentence "including a..." does not exclude the existence of other identical elements in the process, method, or device that includes the element. In this article, each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method parts disclosed in the embodiments, then the relevant parts can be referred to the description of the method parts.

Those skilled in the art may realize that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed by hardware or software may depend on the specific application and design constraint conditions of the technical solution. Those skilled in the art may use different methods for each specific application to realize the described functions, but such realization should not be considered as going beyond the scope of the embodiments of the present disclosure. Those skilled in the art can clearly understand that, for the convenience and conciseness of the description, the working process of the above-described system, device, and unit may refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the embodiments disclosed herein, the disclosed methods and products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of units may only be a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or may be Integrate into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to implement this embodiment. In addition, the functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.

Claims

A manufacturing method of lens grating includes:

Provide substrate;

At least one light-shielding structure and at least two lenses are formed on the substrate, so that the light-shielding structure corresponds to a boundary area of adjacent lenses in the at least two lenses.
The method of manufacturing a lens grating according to claim 1, wherein the substrate is a monolithic substrate.
4. The method of manufacturing a lens grating according to claim 2, wherein forming at least one light-shielding structure and at least two lenses on the substrate comprises:

Forming the at least two lenses on one side of the substrate;

The at least one light shielding structure is formed on the substrate.
4. The method of manufacturing a lens grating according to claim 3, wherein forming the at least one light shielding structure on the substrate comprises:

An opening is provided on the substrate corresponding to the boundary area of the adjacent lenses of the at least two lenses;

Filling the opening with a light-shielding material to form the light-shielding structure.
4. The method for manufacturing a lens grating according to claim 4, wherein the setting of an opening on the substrate corresponding to the boundary area of the adjacent lenses in the at least two lenses comprises:

The substrate corresponds to the boundary area of the adjacent lenses of the at least two lenses, and an opening is provided along the thickness direction of the substrate.
5. The method of manufacturing a lens grating according to claim 5, wherein arranging the opening along the thickness direction of the substrate comprises:

An opening is formed from the side of the substrate away from the at least two lenses, so that the opening extends into the corresponding lens, or extends into the substrate, or penetrates the substrate.
7. The method of manufacturing a lens grating according to claim 6, wherein filling the opening with a light-shielding material comprises:

Fill the opening completely with light-shielding material; or,

A light-shielding material is partially filled in the opening.
7. The method for manufacturing a lens grating according to claim 7, wherein after partially filling the opening with a light-shielding material, the method further comprises:

Fill the surface of the light-shielding material with material.
4. The method of manufacturing a lens grating according to claim 2, wherein forming at least one light-shielding structure and at least two lenses on the substrate comprises:

Forming the at least one light shielding structure on the substrate;

The at least two lenses are formed on one surface of the substrate.
9. The method for manufacturing a lens grating according to claim 9, wherein forming the at least one light shielding structure on the substrate comprises:

Setting an opening at a preset position of the substrate;

Filling the opening with a light-shielding material to form the light-shielding structure.
10. The method of manufacturing a lens grating according to claim 10, wherein setting an opening at a preset position of the substrate comprises:

From one side of the substrate, an opening is provided along the thickness direction of the substrate, and the opening extends to the other side of the substrate or extends into the substrate.
11. The method for manufacturing a lens grating according to claim 11, wherein filling the opening with a light-shielding material comprises:

The opening is completely filled with light-shielding material; or,

A light-shielding material is partially filled in the opening.
The method of manufacturing a lens grating according to claim 12, wherein after partially filling the opening with a light-shielding material, the method further comprises:

Fill the surface of the light-shielding material with material.
The method for manufacturing a lens grating according to any one of claims 10 to 13, wherein forming the at least two lenses on one surface of the substrate comprises:

The at least two lenses are formed on any side of the substrate.
The method of manufacturing a lens grating according to claim 12, wherein after the opening is completely filled with a light-shielding material, the method further comprises:

On a surface of the substrate close to the opening end of the opening, a light-shielding material is formed corresponding to the opening area, so that the formed light-shielding structure partially protrudes from the surface of the substrate.
The method for manufacturing a lens grating according to claim 9, wherein forming the at least one light shielding structure on the substrate comprises:

A light-shielding structure is formed on one side of the substrate, and the light-shielding structure completely protrudes from the surface of the substrate.
The method for manufacturing a lens grating according to claim 15 or 16, wherein forming the at least two lenses on one surface of the substrate comprises:

The light-shielding structure on the substrate protrudes from one side of the substrate, and the at least two lenses are arranged so that the convex part of the light-shielding structure corresponds to the boundary area of the adjacent lenses of the at least two lenses .
The method for manufacturing a lens grating according to claim 1, wherein the substrate is a partial substrate:

Forming at least one light-shielding structure on the substrate includes:

Forming a light-shielding structure on one side of the part of the substrate;

A substrate material is laid on the side of the part of the substrate where the light shielding structure is formed.
The method for manufacturing a lens grating according to claim 3 or 9, wherein the formed at least two lenses include at least one of a concave lens and a convex lens.
The method for manufacturing a lens grating according to claim 19, wherein the formed at least two lenses include at least one of a cylindrical lens and a spherical lens.
22. The method of manufacturing a lens grating according to claim 20, wherein the at least two lenses comprise cylindrical lenses;

Forming the at least two lenses on the substrate includes:

Part or all of the lenticular lenses are distributed on the substrate in parallel.
The method of manufacturing a lens grating according to claim 20, wherein the at least two lenses comprise spherical lenses;

Forming the at least two lenses on the substrate includes:

Part or all of the spherical lenses are arranged in an array on the substrate.