TW202144815A - Manufacturing method of lens grating - Google Patents

Abstract

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

Description

How to make a lens grating

This application claims the priority of the Chinese patent application filed on May 22, 2020 with the China Intellectual Property Office, the application number is 202010439805.1, and the invention name is "Method for making lens gratings", the entire contents of which are incorporated into this application by reference.

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

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

In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art: 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 it will become stray light, resulting in crosstalk between the left and right eye images, and reducing the quality of the image projected in this area.

In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended to be an extensive review, nor to identify key/critical elements or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

The embodiments of the present disclosure provide a method for fabricating a lens grating, so as to solve the technical problem of image crosstalk caused by a distortion region between two lenses in the lens grating.

In some embodiments, a method of fabricating a lens grating is provided, comprising:

provide the 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 between adjacent lenses of 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 between adjacent lenses in at least two lenses;

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

In some embodiments, an opening is provided on the substrate corresponding to a boundary area between adjacent lenses of the at least two lenses, which may include:

An opening is provided on the substrate along the thickness direction of the substrate corresponding to the boundary region of the adjacent lenses among the at least two lenses.

In some embodiments, arranging the openings along the thickness direction of the substrate may include:

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

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

Fill the opening completely with shading material; or,

The opening is partially filled with light-shielding material.

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

Fill material on the surface of the shading material.

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

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

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

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

Provide openings at preset positions of the substrate;

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

In some embodiments, disposing openings at predetermined positions 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 into the substrate.

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

Fill the opening completely with shading material; or,

The opening is partially filled with light-shielding material.

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

Fill material on the surface of the shading material.

In some embodiments, at least two lenses are formed on one side of the substrate, which 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 side 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.

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

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.

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

On the substrate, the light-shielding structure protrudes from one side of the substrate, and at least two lenses are arranged, so that the protruding part of the light-shielding structure corresponds to the boundary area between 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:

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

The substrate material is laid on one side of a part of the substrate on which the light-shielding structure is formed.

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

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

In some embodiments, the lens may comprise a lenticular lens;

Forming the at least two lenses on the substrate may include:

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

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

Forming the at least two lenses on the substrate may include:

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

The manufacturing method of the lens grating provided by the embodiment 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 foregoing general description and the following description are exemplary and explanatory only and are not intended to limit the application.

In order to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the drawings. In the following technical description, for the convenience of explanation, numerous details are provided to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawings.

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

S101, providing 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 cross-sectional structure diagram of a substrate used in fabricating a lens grating according to an embodiment of the present disclosure. In some embodiments, in S101 , the provided substrate 101 may be an integral substrate.

Referring to FIGS. 3 , 4 and 5 , FIG. 3 is a schematic flowchart of forming a light-shielding structure and a lens when manufacturing a lens grating provided by an embodiment of the present disclosure, and FIG. 4 is a cross-section of a lens formed when manufacturing a lens grating provided by an embodiment of the present disclosure. 5 is a schematic cross-sectional structural diagram of a light-shielding structure formed when a lens grating is fabricated according to an embodiment of the present disclosure. In some embodiments, in S102, at least one light-shielding structure and at least two lenses are formed on the substrate, which may include :

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

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

In some embodiments, the at least two lenses 102 formed on one side 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 cross-sectional structure diagram of a lens formed when a lens grating is fabricated according to an embodiment of the present disclosure. The at least two lenses 102 formed on one side of the substrate 101 may include convex lenses.

Referring to FIG. 6 , FIG. 6 is a schematic cross-sectional structure diagram of a concave lens formed when a lens grating is fabricated according to an embodiment of the present disclosure. The at least two lenses 102 formed on one side of the substrate 101 may include concave lenses.

Referring to FIG. 7 , FIG. 7 is a schematic cross-sectional structure diagram of a concave lens and a convex lens formed when a lens grating is fabricated according to an embodiment of the present disclosure. The at least two lenses 102 formed on one side of the substrate 101 may include a convex lens and a concave lens.

The following description will be given by taking the lens 102 as a convex lens as an example.

Referring to FIG. 8, FIG. 8 is a schematic flowchart of forming a light-shielding structure when fabricating 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 the substrate, including:

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

S1022b, filling the opening with a light-shielding material to form a light-shielding structure.

In some embodiments, referring to FIGS. 9A , 9B, and 9C, FIGS. 9A , 9B, and 9C are schematic cross-sectional structural diagrams of openings formed when a lens grating is fabricated according to an embodiment of the present disclosure, corresponding to at least two openings on the substrate. In the junction area of adjacent lenses among the lenses, an opening is provided, including:

An opening is provided on the substrate along the thickness direction of the substrate corresponding to the boundary region of the adjacent lenses among the at least two lenses.

In some embodiments, arranging the openings along the thickness direction of the substrate includes:

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

Referring to FIG. 9A , in some embodiments, openings 104 are formed from a surface of the substrate 101 away from the at least two lenses 102 , and the formed openings 104 extend into the corresponding lenses 102 .

Referring to FIG. 9B , in some embodiments, an opening 104 is formed from a surface of the substrate 101 facing 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 from a surface of the substrate 101 away from the at least two lenses 102 , and the formed opening 104 penetrates through the substrate 101 .

10A, 10B, 11A, 11B, and 11C, FIGS. 10A and 10B are schematic diagrams of cross-sectional structures formed by completely filling the openings with light-shielding materials when fabricating a lens grating according to an embodiment of the present disclosure. 11B and FIG. 11C are schematic cross-sectional structural diagrams formed by partially filling the opening with a light-shielding material when fabricating a lens grating according to an embodiment of the present disclosure. In some embodiments, filling the opening with a light-shielding material includes:

Fill the opening completely with shading material; or,

The opening is partially filled with light-shielding material.

In some embodiments, 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 opening 104 is completely filled with light-shielding material, and the formed light-shielding structure 103 extends into the substrate 101 .

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

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

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

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

In some embodiments, referring to FIGS. 12A , 12B, and 12C, FIGS. 12A , 12B, and 12C are cross-sections formed by partially filling the openings with light-shielding materials and then filling the substrate materials when fabricating a lens grating according to an embodiment of the present disclosure. The schematic diagram of the structure, after the opening is partially filled with the light-shielding material, further includes:

Fill material on the surface of the shading 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 , the opening 104 is partially filled with a light-shielding material, and after the light-shielding structure 103 is formed, the substrate material 105 is filled.

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

Referring to FIG. 12C , the opening 104 penetrates through the substrate 101 , the opening 104 is partially filled with a light-shielding material, and after the light-shielding structure 103 is formed, the substrate material 105 is filled.

In some embodiments, the light-shielding materials 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 of the inner portion of the substrate 101 may be the same or different.

Referring to FIG. 13 , FIG. 13 is another schematic flowchart of forming a light-shielding structure and a lens when fabricating a lens grating according to an embodiment of the present disclosure. In some embodiments, in S102 , at least one light-shielding structure and at least two lenses are formed on a substrate ,include:

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

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

Referring to FIG. 14 , FIG. 14 is another schematic cross-sectional structure diagram of a substrate formed when a lens grating is fabricated according to an embodiment of the present disclosure. First, an overall substrate 201 is provided.

Referring to FIG. 15, FIG. 15 is another schematic flowchart of forming a light-shielding structure when fabricating 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 the substrate, including:

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

S102b, filling the opening with a light-shielding material to form a light-shielding structure.

Referring to FIGS. 16A and 16B , FIGS. 16A and 16B are another cross-sectional structural schematic diagram of the opening formed on the substrate when the lens grating is fabricated according to an embodiment of the present disclosure. In some embodiments, a setting is designed on the substrate 201 in advance. The position of the opening, setting the opening at the preset position of the substrate, including:

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 into the substrate.

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

The opening is partially filled with light-shielding material.

In some embodiments, FIGS. 17A and 17B are another schematic cross-sectional structure diagrams formed by completely filling the light-shielding material in the substrate when fabricating the lens grating provided by the embodiments of the present disclosure. Referring to FIG. 17A , the opening 202 extends to another part of the substrate 201 . On one side, the opening 202 is completely filled with light-shielding material 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 .

FIGS. 18A and 18B are schematic diagrams of another cross-sectional structure formed by partially filling a light-shielding material in a substrate when fabricating a lens grating according to an embodiment of the present disclosure. Referring to FIG. 18A , the opening 202 extends to the other side of the substrate 201 , and in the opening 202 The light-shielding material is partially filled to form the light-shielding structure 203 .

Referring to FIG. 18B , the opening 202 extends into the substrate 201 , and the opening 202 is partially filled with a light-shielding material 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 material on the surface of the shading material.

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

FIGS. 19A and 19B are another schematic cross-sectional structure diagrams formed by partially filling the substrate with the light-shielding material and then filling the base material during the manufacture of the lens grating provided by the embodiment of the present disclosure. Referring to FIG. 19A , the opening 202 extends to the other side of the substrate 201 . After partially filling the light-shielding material in the opening 202 to form the light-shielding structure 203 , the surface of the light-shielding material is filled with the substrate material 204 .

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

In some embodiments, at least two lenses are formed on one side of the substrate, including:

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

20A, 20B, 20C, 20D, and 20E, FIGS. 20A, 20B, 20C, 20D, and 20E are another cross-sectional structural schematic diagram of a lens formed when a lens grating is fabricated according to an embodiment of the present disclosure. , the above-mentioned substrate 201 is formed, and the at least two lenses 205 can be formed on any side of the substrate 201 .

20A, 20B, 20C, 20D, and 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 another schematic cross-sectional structure diagram of a concave lens formed when a lens grating is fabricated 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 another cross-sectional structural schematic diagram of a concave lens and a convex lens formed when a lens grating is fabricated according to an embodiment of the present disclosure. The at least two lenses 205 formed on any side of the substrate 201 may include a concave lens and a convex lens.

Hereinafter, the lens 205 will be described as a convex lens.

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

On the side 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 may be formed by etching, inkjet, embossing, screen printing, etc. The following description will be given by taking etching as an example:

23A, 23B, 23C, and 23D, FIGS. 23A, 23B, 23C, and 23D are another cross-sectional structural schematic diagram of a light-shielding structure formed by etching a light-shielding layer while manufacturing a lens grating according to an embodiment of the present disclosure, After the opening is completely filled with shading material, also include:

A light-shielding material is coated on the side of the substrate 201 close to the opening end of the opening 202, and a light-shielding layer 206 is arranged;

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 another schematic cross-sectional structural diagram of a light-shielding structure formed on the surface of a substrate when a lens grating is fabricated 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 portion of the light-shielding structure 201 that is completely protruded from the surface of the substrate 201 may be formed by etching, inkjet, embossing, etc. The following is an illustration of etching as an example:

In some embodiments, referring to FIG. 24 and FIG. 25 , FIG. 24 is another cross-sectional structural schematic diagram of the light shielding layer formed on the surface of the substrate during the manufacture of the lens grating provided by the embodiment of the present disclosure, and FIG. 25 is the manufacturing method provided by the embodiment of the present disclosure. Another cross-sectional schematic diagram of the light-shielding structure formed on the surface of the substrate during the lens grating, at least one light-shielding structure is formed on the substrate, including:

A light-shielding material is coated on one side of the substrate 201, and a light-shielding layer 206 is provided;

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

In some embodiments, the light-shielding materials 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 of the inner portion of the substrate 201 may be the same or different.

In some embodiments, referring to FIGS. 26A , 26B, and 26C, FIGS. 26A , 26B, and 26C are another cross-sectional structural schematic diagram of a lens formed when a lens grating is fabricated according to an embodiment of the present disclosure. For the light shielding on the substrate 201 When the structure 203 protrudes 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 side of the substrate, and at least two lenses 205 are provided, so that the protruding portion of the light-shielding structure 203 corresponds to the boundary area between adjacent lenses of the at least two lenses 205 .

Referring to FIGS. 28 and 29 , FIGS. 28 and 29 are another schematic cross-sectional structural diagram of a substrate formed when a lens grating is fabricated according to an embodiment of the present disclosure. In some embodiments, the substrate may be a partial substrate:

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

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

The substrate material 304 is laid on the surface of the part of the substrate 301 on which the light shielding structure 303 is formed.

In some embodiments, the light-shielding structures 303 formed on some of the substrates 301 may be formed by etching, inkjet, embossing, etc. The following description will be given by taking etching as an example:

In some embodiments, referring to FIGS. 27 , 28 , and 29 , FIGS. 27 , 28 and 29 are another cross-sectional structural schematic diagram of a substrate formed when a lens grating is fabricated according to an embodiment of the present disclosure, and the provided substrate is a part of the substrate 301;

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

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

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

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

In some embodiments, referring to FIGS. 30 , 31 , 32 , 33 , and 34 , FIG. 30 is a schematic diagram of the arrangement of the lenticular lenses formed when manufacturing the lens grating provided by the embodiments of the present disclosure, and FIG. 31 is the present disclosure Another schematic diagram of the arrangement of the cylindrical lenses formed in the manufacture of the lens grating provided by the embodiment, FIG. 32 is a schematic diagram of the arrangement of the spherical lenses formed in the manufacture of the lens grating provided by the embodiment of the present disclosure, and FIG. 33 is provided by the embodiment of the present disclosure. Fig. 34 is a schematic diagram of another arrangement of spherical lenses formed during the manufacture of lens gratings according to an embodiment of the present disclosure. Fig. 34 is a schematic diagram of the arrangement of cylindrical lenses and spherical lenses formed during the manufacture of lens gratings provided by an embodiment of the present disclosure. On the substrate 401, a lens 402 is provided. At least one of a cylindrical lens 4021 and a spherical lens 4022 is included.

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

Forming at least two lenses on the substrate 401 includes:

Some or all of the lenticular lenses 4021 are distributed on the substrate in parallel.

In some embodiments, referring to Figures 32 and 33, the lens 402 comprises a spherical lens 4022;

Forming at least two lenses on the substrate 401 includes:

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

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 lenticular lenses 4021 may be concave lenticular lenses, or may be lenticular convex lenses, or may be a combination of lenticular convex lenses and lenticular 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 the lenses 102 are set according to actual needs.

In some embodiments, whether the lens comprises a cylindrical lens, a spherical lens, or has other shapes, at least one curve of the surface of the lens may be macroscopically circular or non-circular, such as: elliptical, hyperbolic, parabolic ,Wait. Optionally, at least one curve of the surface of the lens may be in a non-circular shape such as a polygon in 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 method for fabricating a 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 stray light generated at the junction of two lenses, thereby effectively improving the image quality projected in this area.

The foregoing 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, process, and other changes. The examples represent only possible variations. Unless expressly required, individual components and functions are optional and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments. The scope of the disclosed embodiments includes the entire scope of the claimed scope, along with all available equivalents to the claimed scope. 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. For example, without changing the meaning of the description, a first element could be termed a second element, and similarly, a second element could be termed a first element, so long as all occurrences of "the first element" were consistently renamed and all occurrences of "the first element" were named consistently The "second element" can be renamed consistently. The first element and the second element are both elements, but may not be the same element. Also, the terms used in this application are used to describe the embodiments only and not to limit the scope of the claims. As used in the description of the examples and the claimed scope, the singular forms "a" (a), "an" (an) and "the" (the) are intended to include the plural referents as well, unless the context clearly dictates otherwise. form. Similarly, the term "and/or" as used in this application is meant to include any and all possible combinations of one or more of the associated listings. Additionally, as used in this application, the term "comprise" and its variants "comprises" and/or including (comprising), etc., refer to stated features, integers, steps, operations, elements, and/or The presence of a component does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groupings of these. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, or device that includes the element. Herein, each embodiment may focus on the differences from other embodiments, and the same and similar parts between the various embodiments may refer to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, reference may be made to the description of the method section for relevant parts.

Those skilled in the art can realize that the units and algorithm steps of each example described in conjunction 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 in hardware or software may depend on the specific application and design constraints of the technical solution. Skilled artisans may use different methods for implementing the described functionality for each particular application, but such implementations should not be considered beyond the scope of the disclosed embodiments. Those skilled in the art can clearly understand that, for the convenience and brevity of the description, for the working process of the above-described systems, devices and units, reference may be made to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

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

101: Substrate 102: Lens 103: Shading structure 104: Opening 105: Substrate material 201: Substrate 202: Opening 203: Shading structure 204: Substrate material 205: Lens 206: shading layer 301: Partial substrate 302: shading layer 303: Shading structure 304: Substrate Material 401: Substrate 4021: Cylindrical lens 4022: Spherical Lens

One or more embodiments are exemplified by the corresponding drawings, which do not constitute limitations of the embodiments, and elements with the same reference numerals in the drawings are shown as similar elements, The drawings do not constitute a limitation of scale, and where:

1 is a schematic flowchart of a method for manufacturing a lens grating provided by an embodiment of the present disclosure;

FIG. 2 is a schematic cross-sectional structural diagram of a substrate used in manufacturing a lens grating provided by an embodiment of the present disclosure;

3 is a schematic flowchart of forming a light-shielding structure and a lens when manufacturing a lens grating according to an embodiment of the present disclosure;

4 is a schematic cross-sectional structure diagram of a lens formed when a lens grating is fabricated according to an embodiment of the present disclosure;

5 is a schematic cross-sectional structural diagram of a light-shielding structure formed when a lens grating is fabricated according to an embodiment of the present disclosure;

6 is a schematic cross-sectional structural diagram of a concave lens formed when a lens grating is fabricated according to an embodiment of the present disclosure;

7 is a schematic cross-sectional structural diagram of a concave lens and a convex lens formed when a lens grating is fabricated according to an embodiment of the present disclosure;

8 is a schematic flowchart of forming a light-shielding structure when fabricating a lens grating according to an embodiment of the present disclosure;

9A, FIG. 9B, and FIG. 9C are schematic cross-sectional structural diagrams of openings formed when manufacturing a lens grating according to an embodiment of the present disclosure;

10A and 10B are schematic cross-sectional structural diagrams formed by completely filling light-shielding materials in the openings when fabricating a lens grating according to an embodiment of the present disclosure;

11A , 11B, and 11C are schematic cross-sectional structural diagrams formed by partially filling the opening with a light-shielding material when fabricating a lens grating according to an embodiment of the present disclosure;

12A, 12B, and 12C are schematic cross-sectional structural diagrams formed by partially filling the opening with a light-shielding material and then filling the substrate material when fabricating a lens grating according to an embodiment of the present disclosure;

13 is another schematic flowchart of forming a light-shielding structure and a lens when fabricating a lens grating according to an embodiment of the present disclosure;

14 is another cross-sectional structural schematic diagram of a substrate formed when a lens grating is fabricated according to an embodiment of the present disclosure;

15 is another schematic flowchart of forming a light-shielding structure when fabricating a lens grating according to an embodiment of the present disclosure;

16A and 16B are another cross-sectional structural schematic diagram of an opening formed on a substrate when a lens grating is fabricated according to an embodiment of the present disclosure;

17A and 17B are another schematic cross-sectional structure diagrams formed by completely filling a light-shielding material in a substrate when fabricating a lens grating according to an embodiment of the present disclosure;

18A and 18B are another cross-sectional schematic diagram of a structure formed by partially filling a light-shielding material in a substrate when fabricating a lens grating according to an embodiment of the present disclosure;

FIGS. 19A and 19B are another cross-sectional structural schematic diagram formed by partially filling the substrate with a light-shielding material and then filling the base material when fabricating a lens grating according to an embodiment of the present disclosure;

20A, 20B, 20C, 20D, and 20E are another cross-sectional structural schematic diagram of a lens formed when a lens grating is fabricated according to an embodiment of the present disclosure;

21 is another cross-sectional structural schematic diagram of a concave lens formed when a lens grating is fabricated according to an embodiment of the present disclosure;

22 is another cross-sectional structural schematic diagram of a concave lens and a convex lens formed when a lens grating is fabricated according to an embodiment of the present disclosure;

23A, FIG. 23B, FIG. 23C, and FIG. 23D are another cross-sectional structural schematic diagram of a light-shielding structure formed by etching a light-shielding layer while manufacturing a lens grating according to an embodiment of the present disclosure;

24 is another cross-sectional structural schematic diagram of the light shielding layer formed on the surface of the substrate during the manufacture of the lens grating provided by the embodiment of the present disclosure;

25 is another cross-sectional structural schematic diagram of the light-shielding structure formed on the surface of the substrate when the lens grating is fabricated according to an embodiment of the present disclosure;

26A, 26B, and 26C are another cross-sectional structural schematic diagram of a lens formed when a lens grating is fabricated according to an embodiment of the present disclosure;

27 , 28 and 29 are another cross-sectional structural schematic diagram of a substrate formed when a lens grating is fabricated according to an embodiment of the present disclosure;

FIG. 30 is a schematic diagram of an arrangement of cylindrical lenses formed when a lens grating is fabricated according to an embodiment of the present disclosure;

31 is a schematic diagram of another arrangement of the lenticular lenses formed when the lens grating is fabricated according to an embodiment of the present disclosure;

32 is a schematic diagram of an arrangement of spherical lenses formed when a lens grating is fabricated according to an embodiment of the present disclosure;

33 is a schematic diagram of another arrangement of spherical lenses formed when a lens grating is fabricated according to an embodiment of the present disclosure;

FIG. 34 is a schematic diagram of an arrangement of cylindrical lenses and spherical lenses formed when a lens grating is fabricated according to an embodiment of the present disclosure.

Claims (22)

A method for manufacturing a lens grating, comprising: provide the 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 among the at least two lenses. The method for manufacturing a lens grating according to claim 1, wherein the substrate is an integral substrate. The method for manufacturing a lens grating according to claim 2, wherein at least one light-shielding structure and at least two lenses are formed on the substrate, comprising: forming the at least two lenses on one side of the substrate; The at least one light shielding structure is formed on the substrate. The method for 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 between adjacent lenses of the at least two lenses; A light-shielding material is filled in the opening to form the light-shielding structure. The method for manufacturing a lens grating according to claim 4, wherein an opening is provided on the substrate corresponding to a boundary area between adjacent lenses of the at least two lenses, comprising: An opening is provided on the substrate along the thickness direction of the substrate corresponding to the boundary area between adjacent lenses among the at least two lenses. The method for manufacturing a lens grating according to claim 5, wherein arranging openings along the thickness direction of the substrate comprises: An opening is formed from a side of the substrate facing away from the at least two lenses, so that the opening extends into the corresponding lens, or extends into the substrate, or penetrates through the substrate. The method for manufacturing a lens grating according to claim 6, wherein filling the opening with a light-shielding material includes: Fill the opening completely with light-shielding material; or, The opening is partially filled with light-shielding material. The method for manufacturing a lens grating according to claim 7, wherein after the opening is partially filled with a light-shielding material, the method further comprises: Filling material on the surface of the light-shielding material. The method for manufacturing a lens grating according to claim 2, wherein at least one light-shielding structure and at least two lenses are formed on the substrate, comprising: forming the at least one light-shielding structure on the substrate; The at least two lenses are formed on one 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: an opening is provided at a preset position of the substrate; A light-shielding material is filled in the opening to form the light-shielding structure. The method for manufacturing a lens grating according to claim 10, wherein setting the opening at a preset position of the substrate includes: 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. The method for manufacturing a lens grating according to claim 11, wherein filling the opening with a light-shielding material includes: Fill the opening completely with light-shielding material; or, The opening is partially filled with light-shielding material. The method for manufacturing a lens grating according to claim 12, wherein after the opening is partially filled with a light-shielding material, the method further comprises: Filling material on the surface of the light-shielding 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 side of the substrate comprises: The at least two lenses are formed on either side of the substrate. The method for manufacturing a lens grating according to claim 12, wherein after the light-shielding material is completely filled in the opening, the method further comprises: On the side 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 side of the substrate comprises: On the substrate, the light-shielding structure protrudes from one side of the substrate, and the at least two lenses are arranged so that the protruding part of the light-shielding structure corresponds to the boundary area between 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: At least one light-shielding structure is formed on the substrate, including: forming a light-shielding structure on one side of the partial substrate; A substrate material is laid on one side of the partial substrate on which the light-shielding structure is formed. The method for manufacturing a lens grating according to claim 3 or 9, wherein the at least two lenses formed 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 at least two lenses formed include at least one of a cylindrical lens and a spherical lens. The method for 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 for 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 on the substrate in an array.

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