KR20120074111A - Lens unit, camera module having the same and method of fabricating the same - Google Patents

Abstract

PURPOSE: A lens unit, a camera module including the same, and a manufacturing method thereof are provided to effectively block unnecessary light through a light shielding layer. CONSTITUTION: A lens unit(100) comprises a lens portion(110), a supporting portion(120), and a light shielding layer(130). The lens portion has a curved surface. The supporting portion is arranged in around the lens portion. The light shielding layer is composed of a first light shielding layer and a second light shielding layer. The first light shielding layer is directly coated on the supporting portion. The second light shielding layer is coated on the first light shielding layer. The first light shielding layer comprises a first open area corresponding to the lens portion. The second light shielding layer comprises a second open area larger than the first open area.

Description

Lens unit, camera module including same and manufacturing method thereof {LENS UNIT, CAMERA MODULE HAVING THE SAME AND METHOD OF FABRICATING THE SAME}

A lens unit, a camera module including the same, and a method of manufacturing the same are disclosed.

Recently, mobile devices such as mobile phones equipped with cameras have emerged, and it is possible to shoot still images and videos anytime and anywhere.

In addition, the performance of the camera is gradually improved for high resolution and high quality shooting, and the camera module equipped with an auto focusing function, a macro function and an optical zoom function is mounted.

Embodiments can be easily manufactured and provide a lens unit having an improved optical characteristic, a camera module including the same, and a method of manufacturing the same.

Lens unit according to the embodiment includes a lens unit having a curved surface; A support portion disposed around the lens portion; And a first light blocking layer directly coated on the support.

Camera module according to the embodiment includes a lens unit having a curved surface; A support portion disposed around the lens portion; And a first light blocking layer coated directly on the support part. A second lens unit disposed on the first lens unit; And a sensor unit disposed below the first lens unit.

A method of manufacturing a lens unit according to an embodiment includes forming a first preliminary lens array substrate; Printing an opaque material on the first preliminary lens array substrate to form a first lens array substrate including a first light blocking layer; Cutting the first lens array substrate.

The lens unit according to the embodiment includes a light blocking layer coated directly on the support. In particular, the light shielding layer may be formed by a screen printing method or the like. That is, the mask may be disposed on the preliminary lens array substrate, and the light blocking layer may be formed by a screen printing method using the mask.

Accordingly, the light shielding layer can be precisely aligned on the preliminary lens array substrate. Accordingly, the light shielding layer can efficiently block unnecessary light, and the camera module according to the embodiment can efficiently remove noise and the like.

1 is a perspective view illustrating a lens unit according to an embodiment.
FIG. 2 is a cross-sectional view showing a section cut along AA 'in FIG. 1; FIG.
3 is a cross-sectional view illustrating a lens unit according to another exemplary embodiment.
4 is an exploded perspective view showing a camera module according to an embodiment.
5 is a perspective view illustrating a camera module according to an embodiment.
FIG. 6 is a cross-sectional view taken along the line BB ′ of FIG. 5.
7 to 12 are views illustrating a process of manufacturing a camera module according to an embodiment.

In the description of the embodiments, each lens, unit, part, hole, protrusion, groove or layer, etc., is placed on or under the "on" of each lens, unit, part, hole, protrusion, groove, or layer, etc. And " under " include both " directly " or " indirectly " through other components. . In addition, the upper or lower reference of each component is described with reference to the drawings. The size of each component in the drawings may be exaggerated for the sake of explanation and does not mean the size actually applied.

1 is a perspective view illustrating a lens unit according to an embodiment. FIG. 2 is a cross-sectional view illustrating a cross section taken along line AA ′ in FIG. 1.

1 to 2, the lens unit 100 according to the embodiment includes a lens unit 110, a support unit 120, and a light blocking layer 130.

The lens unit 110 has a curved surface having a predetermined curvature. In more detail, the lens unit 110 has convex and concave surfaces facing each other. The lens unit 110 refracts incident light. The lens unit 110 has a diameter of about 0.5 mm to 3 mm.

The support part 120 is disposed around the lens part 110. In more detail, the support part 120 surrounds the lens part 110. That is, it extends laterally from the lens unit 110. The support part 120 supports the lens part 110.

The support part 120 may have a plate shape. The support part 120 is integrally formed with the lens part 110. The support part 120 may have a rectangular shape when viewed in a plan view. The width of the support part 120 may be about 5 mm to about 10 mm.

The lens unit 110 and the support unit 120 are integrally formed. The lens unit 110 and the support unit 120 are formed of the same material. The lens unit 110 and the support unit 120 may be formed of a transparent plastic.

The lens unit 110 and the support unit 120 has high heat resistance. The plastic used as the lens unit 110 and the support unit 120 is hardly deformed even at a temperature of about 200 ° C to about 350 ° C. For example, the glass transition temperature of the plastic used as the lens unit 110 and the support unit 120 may be about 130 ℃ to about 250 ℃. Preferably, the glass transition temperature of the plastic used as the lens unit 110 and the support unit 120 may be about 200 ℃ to about 250 ℃. In addition, the melting point of the plastic used as the lens unit 110 and the support 120 may be about 350 ℃ to about 450 ℃.

Thermoplastic resin, thermosetting resin, or photocurable resin may be used as the lens unit 110 and the support unit 120. Examples of the material used as the lens unit 110 and the support unit 120 include a carbonate resin such as polycarbonate (PC) or an acrylic resin such as polymethylmethacrylate (PMMA). .

The light blocking layer 130 is coated on the support part 120. In more detail, the light blocking layer 130 may be directly coated on the upper or lower surface of the support part 120. Accordingly, the light blocking layer 130 is in direct contact with the support part 120. That is, another material such as an adhesive layer is not interposed between the light blocking layer 130 and the support part 120.

The light blocking layer 130 is opaque. An example of a material used as the light blocking layer 130 may include an opaque plastic or the like. In more detail, the light blocking layer 130 may be a plastic including a colored dye or the like.

 The light blocking layer 130 may have a thickness of about 5 μm to 20 μm. In more detail, the thickness of the light blocking layer 130 may be about 10 μm. The light blocking layer 130 includes an open area 132. That is, light passes through the open area 132 of the light blocking layer 130. The open area 132 corresponds to the lens unit 110. In more detail, the outside of the open area 132 corresponds to the boundary between the lens unit 110 and the support unit 120.

The light blocking layer 130 has high heat resistance. The plastic used as the light blocking layer 130 is hardly deformed even at a temperature of about 200 ° C to about 350 ° C. For example, the glass transition temperature of the plastic used as the light blocking layer 130 may be about 130 ℃ to about 250 ℃. Preferably, the glass transition temperature of the plastic used as the light blocking layer 130 may be about 200 ℃ to about 250 ℃. In addition, the melting point of the plastic used as the light blocking layer 130 may be about 350 ℃ to about 450 ℃. Examples of the plastic used as the light shielding layer 130 may include polyimide or epoxy resin.

Side surfaces of the light blocking layer 130 are disposed on the same plane as the side surfaces of the support part 120. That is, the light blocking layer 130 and the support part 120 may include the same cut surface. That is, the light blocking layer 130 and the support part 120 may be simultaneously formed by a cutting process.

The light blocking layer 130 may be formed by a printing process, not a bonding process. That is, in order to form the light blocking layer 130, a resin composition layer may be printed on a lens array substrate by a printing process such as screen printing, and the resin composition layer may be cured. The cured resin composition layer and the lens array substrate may be cut to form the light blocking layer 130.

Since the light blocking layer 130 is formed directly on the support part 120 by a printing process, the light blocking layer 130 may be accurately aligned with the lens part 110 and the support part 120. . That is, the open area 132 of the light blocking layer 130 may be accurately aligned with the lens unit 110.

Accordingly, the lens unit 100 according to the embodiment has improved optical characteristics. That is, the lens unit 100 according to the embodiment may improve the characteristics of incident light through the lens unit 110 and effectively block unnecessary light through the light blocking layer 130.

In addition, the light shielding layer 130 may be easily formed by a printing process without using a separate bonding process. Therefore, the lens unit 100 according to the embodiment may be easily formed.

3 is a cross-sectional view illustrating a lens unit according to another exemplary embodiment. In the description of this embodiment, reference is made to the description of the foregoing lens unit. That is, the description of the foregoing lens unit may be essentially combined with the description of the present embodiment except for the changed part.

Referring to FIG. 3, the lens unit 200 according to the present exemplary embodiment includes a second light blocking layer 230 and a third light blocking layer 240.

The second light blocking layer 230 is coated on the support 220. In more detail, the second light blocking layer 230 may be directly coated on the upper or lower surface of the support part 220.

The third light blocking layer 240 is coated on the second light blocking layer 230. The third light blocking layer 240 may be directly coated on the upper or lower surface of the first coating layer.

The second light blocking layer 230 and the third light blocking layer 240 may be formed of the same material. Alternatively, the second light blocking layer 230 and the third light blocking layer 240 may be formed of different materials.

The second light blocking layer 230 includes a second open area 232, and the third light blocking layer 240 includes a third open area 242. Incident light passes through the second open area 232 and the third open area 242.

The second open area 232 corresponds to the lens unit 210. In more detail, an outer edge of the second open area 232 corresponds to a boundary between the lens unit 210 and the support unit 220.

The third open area 242 corresponds to the lens unit 210. The third open area 242 corresponds to the second open area 232. The third open area 242 is larger than the second open area 232. In more detail, the planar area of the third open area 242 is larger than the planar area of the second open area 232.

In addition, the second open area 232 overlaps the third open area 242 as a whole. In more detail, the outer periphery of the third open area 242 surrounds the second open area 232. In addition, the center of the second open area 232 may correspond to the center of the third open area 242.

Accordingly, the second open area 232 and the third open area 242 may form a step with each other. That is, the second light blocking layer 230 and the third light blocking layer 240 may form a step in the center portion.

The side surface of the support part 120, the side surface of the second light blocking layer 230, and the side surface of the third light blocking layer 240 may be disposed on the same plane. That is, the support part 220, the second light blocking layer 230, and the third light blocking layer 240 may include the same cut surface.

The size of the second open area 232 and the third open area 242 may vary depending on a path of light passing through the lens unit 210. For example, when light passing through the lens unit 210 is spread, the third open area 242 may be larger than the second open area 232. When light passing through the lens unit 210 is focused, the third open area 242 may be smaller than the second open area 232.

In the present exemplary embodiment, two light blocking layers 230 and 240 are described as being disposed on the support part 220. However, the present invention is not limited thereto, and three or more light blocking layers may be disposed on the support part 220. In particular, the open area of each light blocking layer may become larger or smaller as it moves away from the lens unit 210 in consideration of a path of light passing through the lens unit 210.

As described above, the lens unit 200 according to the exemplary embodiment includes a plurality of light blocking layers 230 and 240, and the light blocking layers 230 and 240 respectively open the open areas 232 and 242 of different sizes. It can be formed to include. In addition, the open areas 232 and 242 of different sizes may be disposed along the path of the light passing therethrough. Accordingly, the lens unit 200 according to the embodiment may improve the characteristics of the light passing through, effectively remove unnecessary light, and have improved optical characteristics.

4 is an exploded perspective view showing a camera module according to an embodiment. 5 is a perspective view illustrating a camera module according to an embodiment. FIG. 6 is a cross-sectional view taken along the line BB ′ in FIG. 5. The lens units described above may be included in the camera module. That is, the descriptions of the foregoing lens unit can be essentially combined with the description of the present embodiment.

4 to 6, the camera module according to the embodiment includes the lens assembly 20 and the sensor unit 10.

The lens assembly 20 improves the characteristics of light incident from the outside and exits the sensor unit 10. The lens assembly 20 may collect the incident light. The lens assembly 20 may include a first lens unit 100, a second lens unit 200, an optical filter 300, a first spacer 400, a second spacer 500, a third spacer 600, and The light shielding part 700 is included.

The first lens unit 100 includes a first lens unit 110, a first support unit 120, and a first light blocking layer 130. The first light blocking layer 130 is disposed on the bottom surface of the first support part 120.

The second lens unit 200 is disposed on the first lens unit 100. The second lens unit 200 is spaced apart from the first lens unit 100 at a predetermined interval. The outer periphery of the second lens unit 200 may coincide with the outer periphery of the first lens unit 100. Side surfaces of the second lens unit 200 may be disposed on the same plane as the side surfaces of the first lens unit 100. That is, side surfaces of the second lens unit 200 and side surfaces of the first lens unit 100 may be cut surfaces formed by cutting at the same time.

The second lens unit 200 includes a second lens unit 210, a second support unit 220, a second light blocking layer 230, and a third light blocking layer 240.

The second lens unit 210 corresponds to the first lens unit 110. For example, the center of the second lens unit 210 may correspond to the center of the first lens unit 110. That is, the center of the second lens unit 210 may be substantially coincident with the center of the first lens unit 110.

The second light blocking layer 230 is disposed below the second support part 120. In more detail, the second light blocking layer 230 may be coated on the bottom surface of the second support part 120. The third light blocking layer 240 is disposed under the second light blocking layer 230. In more detail, the third light blocking layer 240 may be coated on the bottom surface of the third light blocking layer 240.

The first lens unit and the second lens unit have substantially the same configuration as the preceding lens unit. That is, the detailed features of the first lens unit and the second lens unit refer to the description of the foregoing lens unit. For example, the first lens unit may be substantially the same as the lens unit according to the first embodiment described above, and the second lens unit may be substantially the same as the lens unit according to the second embodiment described above. have.

In addition, in the present exemplary embodiment, although the first lens unit includes one light blocking layer 130 and the second lens unit includes two light blocking layers 130, the present invention is not limited thereto. That is, the first lens unit may include two or more light blocking layers 130, and the second lens unit may include one or three light blocking layers 130.

Although the camera module including the two lens units 100 and 200 has been described in the present embodiment, the present invention is not limited thereto, and the camera module according to the embodiment may include three or more lens units.

The optical filter 300 is disposed below the first lens unit 100. The optical filter 300 is an infrared filter for filtering infrared light. The optical filter 300 may be formed by coating a material for filtering infrared rays on a plastic substrate or a glass substrate.

The optical filter 300 may filter the light passing through to block infrared rays. The optical filter 300 may be attached to the second spacer 500 and the third spacer 600. In addition, the side surface of the optical filter 300 may be disposed on the same plane as the side surface of the first lens unit 100. That is, side surfaces of the optical filter 300, side surfaces of the first lens unit 100, and side surfaces of the second lens unit 200 may be cut surfaces formed by cutting at the same time.

The first spacer 400 is interposed between the first lens unit 100 and the second lens unit 200. The first spacer 400 is attached to the first lens unit 100 and the second lens unit 200. In more detail, the first spacer 400 is attached to an upper surface of the first lens unit 100 and a lower surface of the second lens unit 200. In more detail, the first spacer 400 is adhered to an upper surface of the first light blocking layer 130 and a lower surface of the second light blocking layer 230.

The outer periphery of the first spacer 400 may coincide with the outer periphery of the first lens unit 100 and the periphery of the second lens unit 200. That is, the side surface of the first spacer 400 may be disposed on the same plane as the side surface of the first lens unit 100 and the side surface of the second lens unit 200. The thickness of the first spacer 400 may be about 100 μm to about 500 μm.

The first spacer 400 may be transparent or opaque. The first spacer 400 may include glass or plastic. The first spacer 400 may have high heat resistance.

Thermoplastic resin, thermosetting resin or photocurable resin may be used as the first spacer 400. Examples of the material used as the first spacer 400 include polyether ether ketone (PEEK), polyethylene naphthalate (PEN), polyimide (PI), or liquid crystal polymer (liquid). plastics having high heat resistance such as crystal polymer).

The first spacer 400 may be entirely formed of plastic. For example, the first spacer 400 may be formed of a single layer film. Alternatively, the first spacer 400 may be composed of a plurality of layers. In this case, all the layers constituting the first spacer 400 may include the above-described plastic.

The first spacer 400 includes a first transmission hole 410. The first transmission hole 410 corresponds to the first lens unit 110 and the second lens unit 210. The center of the first transmission hole 410 may be substantially coincident with the center of the first lens unit 110 and the center of the second lens unit 210.

The second spacer 500 is interposed between the first lens unit 100 and the optical filter 300. The second spacer 500 is attached to the first lens unit 100 and the optical filter 300. In more detail, the second spacer 500 is attached to the bottom surface of the first lens unit 100 and the top surface of the optical filter 300. In more detail, the second spacer 500 is attached to the bottom surface of the first support part 120 and the top surface of the optical filter 300.

The outline of the second spacer 500 may coincide with the outline of the first lens unit 100 and the outline of the second lens unit 200. That is, the side surface of the second spacer 500 may be disposed on the same plane as the side surface of the first lens unit 100 and the side surface of the second lens unit 200. The thickness of the second spacer 500 may be about 100 μm to about 500 μm.

The second spacer 500 may be transparent or opaque and include glass or plastic. The second spacer may have high heat resistance.

As the second spacer 500, a thermoplastic resin, a thermosetting resin, a photocurable resin, or the like may be used. Examples of the material used as the second spacer 500 include polyether ether ketone (PEEK), polyethylene naphthalate (PEN), polyimide (PI), or liquid crystal polymer (liquid). plastics having high heat resistance such as crystal polymer).

The second spacer 500 may be entirely formed of plastic. For example, the second spacer 500 may be formed of a single layer film. Alternatively, the second spacer 500 may be composed of a plurality of layers. In this case, all the layers constituting the second spacer 500 may include the plastics described above.

The second spacer 500 includes a second transmission hole 510. The second transmission hole 510 corresponds to the first lens unit 110 and the second lens unit 210. The center of the second transmission hole 510 may be substantially coincident with the center of the first lens unit 110 and the center of the second lens unit 210.

The third spacer 600 is interposed below the optical filter 300. The third spacer 600 may be interposed between the optical filter 300 and the sensor unit 10. The third spacer 600 is attached to the lower surface of the optical filter 300.

The outer periphery of the third spacer 600 may coincide with the outer periphery of the optical filter 300. That is, the side surface of the third spacer 600 may be disposed on the same plane as the side surface of the optical filter 300. The third spacer 600 may have a thickness of about 100 μm to about 500 μm.

The third spacer 600 is transparent or opaque and includes glass or plastic. The third spacer has high heat resistance.

As the third spacer 600, a thermoplastic resin, a thermosetting resin, a photocurable resin, or the like may be used. Examples of the material used as the third spacer 600 include polyether ether ketone (PEEK), polyethylene naphthalate (PEN), polyimide (PI), or liquid crystal polymer (liquid). plastics having high heat resistance such as crystal polymer).

The third spacer 600 may be entirely formed of plastic. For example, the third spacer 600 may be formed of a single layer film. Alternatively, the third spacer 600 may be composed of a plurality of layers. In this case, all the layers constituting the second spacer 500 may include the plastics described above.

The third spacer 600 includes a third transmission hole 610. The third transmission hole 610 corresponds to the first lens unit 110 and the second lens unit 210. The center of the third transmission hole 610 may substantially coincide with the center of the first lens unit 110 and the center of the second lens unit 210.

An inner surface of the third transmission hole 610 may be inclined with respect to the upper surface of the third spacer 600. In this case, an inner surface of the third transmission hole 610 may cross at an angle of about 40 ° to 80 ° with respect to the top surface of the third spacer 600.

The direction in which the inner surface of the third transmission hole 610 is inclined may be substantially the same as the path of incident light. Therefore, the angle of the inner surface of the third transmission hole 610 is changed depending on the optical design of the first lens unit 100 and the second lens unit 200.

The diameter of the third transmission hole 610 may gradually increase as it moves away from the optical filter 300. Unlike this, the diameter of the third transmission hole 610 may gradually decrease as the distance from the optical filter 300.

Since the inner surface of the third transmission hole 610 is inclined with respect to the upper surface of the third spacer 600, the light passing through the optical filter 300 may be effectively incident on the sensor unit 10. .

The light blocking part 700 is disposed on the second lens unit 200. The light blocking part 700 may be adhered to the second lens unit 200. In more detail, the light blocking part 700 may be adhered to an upper surface of the second support part 220. The light blocking part 700 may have a thickness of about 100 μm to about 500 μm.

The outside of the light blocking part 700 may coincide with the outside of the first lens unit 100 and the outside of the second lens unit 200. That is, the side surface of the light blocking part 700 may be disposed on the same plane as the side surface of the first lens unit 100 and the side surface of the second lens unit 200.

The light blocking part 700 is opaque and includes plastic. For example, the light blocking part 700 may include colored dyes such as black dyes, and plastics. The light blocking part 700 may be made of plastic having high heat resistance.

The plastic used as the light blocking part 700 is hardly deformed even at a temperature of about 200 ° C to about 350 ° C. For example, the glass transition temperature of the plastic used as the light blocking part 700 may be about 130 ° C to about 250 ° C. Preferably, the glass transition temperature of the plastic used as the light blocking part 700 may be about 200 ℃ to about 250 ℃. In addition, the melting point of the plastic used as the light blocking part 700 may be about 350 ℃ to about 450 ℃.

As the light blocking part 700, a thermoplastic resin, a thermosetting resin, a photocurable resin, or the like may be used. Examples of the material used as the light blocking part 700 include polyether ether ketone (PEEK), polyethylene naphthalate (PEN), polyimide (PI), or liquid crystal polymer (liquid crystal). plastics having high heat resistance such as polymer).

The light blocking part 700 may be entirely formed of plastic. For example, the light blocking part 700 may be formed of a single layer film. Alternatively, the light blocking part 700 may be composed of a plurality of layers. In this case, all of the layers constituting the light blocking part 700 may include the plastic described above.

The light blocking part 700 includes a fourth transmission hole 710. The fourth transmission hole 710 corresponds to the first lens unit 110 and the second lens unit 210. The center of the fourth transmission hole 710 may be substantially coincident with the center of the first lens unit 110 and the center of the second lens unit 210.

An inner side surface of the fourth transmission hole 710 may be inclined with respect to an upper surface of the light blocking portion 700. In this case, an inner surface of the fourth transmission hole 710 may cross at an angle of about 30 ° to 70 ° with respect to the top surface of the light blocking part 700.

The direction in which the inner surface of the fourth transmission hole 710 is inclined may be substantially the same as the path of incident light. Therefore, the angle of the inner surface of the fourth transmission hole 710 may vary depending on the optical design of the second lens unit 200. The diameter of the fourth transmission hole 710 may gradually increase as the diameter of the fourth transmission hole 710 moves away from the first lens unit 100.

The portion 714 where the inner surface of the fourth transmission hole 710 and the lower surface 713 of the light blocking portion 700 meet each other corresponds to a boundary between the second lens portion 210 and the second support portion 220. Can be.

Since the inner side surface of the fourth transmission hole 710 is inclined with respect to the upper surface of the light blocking portion 700, light from the outside may be effectively incident on the second lens portion 210. In particular, since the inner surface of the fourth transmission hole 710 corresponds to the boundary between the second lens unit 210 and the second support unit 220, unnecessary light that causes noise is effectively prevented from the light blocking unit 700. Can be removed by

The first spacer 400, the second spacer 500, the third spacer 600, and the light blocking part 700 may include the first lens unit 100, the second lens unit 200, and the The optical filter 300 may be attached by adhesive layers (not shown).

For example, an adhesive layer may be interposed between the first spacer 400 and the first lens unit 100, and another adhesive layer may be interposed between the first spacer 400 and the second lens unit 200. Can be. That is, the first spacer 400 may be attached to the first lens unit 100 and the second lens unit 200 through the adhesive layers (not shown).

The material used as the adhesive layers has high heat resistance. For example, the material used for the adhesive layers hardly deforms even at temperatures of about 200 ° C to about 350 ° C. The material used as the adhesive layers may be a plastic having a glass transition temperature of about 130 ° C to about 250 ° C. Preferably, a plastic having a glass transition temperature of about 200 ° C to about 250 ° C may be used as the adhesive layers. In addition, a plastic having a melting point of about 350 ° C. to about 450 ° C. may be used.

Examples of the material used as the adhesive layers include an epoxy resin or an acrylic resin.

The sensor unit 10 is disposed below the lens assembly 20. The sensor unit 10 may be attached to the lens assembly 20. The sensor unit 10 senses light incident through the lens assembly 20. The sensor unit 10 includes a sensing chip 11 and a circuit board 12.

The sensing chip 11 converts light incident from the lens assembly 20 into an electrical signal. The sensing chip 11 is connected to the circuit board 12. The sensing chip 11 may include a plurality of semiconductor devices capable of sensing an image. The sensing chip 11 may be a semiconductor chip made of silicon.

The circuit board 12 is electrically connected to the sensing chip 11. The circuit board 12 receives an electrical signal applied from the sensing chip 11. The circuit board 12 may drive the sensing chip 11.

The camera module according to the embodiment includes lens units 100 and 200 including a precisely aligned light blocking layer. Accordingly, the camera module according to the embodiment has improved optical characteristics.

In addition, since the lens units 100 and 200 include a light blocking layer that is already aligned, the spacers 400 and 500 do not need to be correctly aligned. Accordingly, the through holes 410 and 510 of the spacers 400 and 500 may be sufficiently large. Accordingly, the camera module according to the embodiment may reduce misalignment between the transmission holes 410 and 510 of the spacers 400 and 500 and the lens units 110 and 210.

In particular, the first transmission hole 410 of the first spacer 400 may be formed sufficiently larger than the first lens unit 110 and the second lens unit 210.

In addition, the first lens unit 100, the second lens unit 200, the optical filter 300, the first spacer 400, the second spacer 500, and the third spacer 600. And the adhesive layers have high heat resistance.

Accordingly, the camera module according to the embodiment may have high heat resistance. Accordingly, in the high temperature reflow process for joining the camera module according to the embodiment to the main substrate, the camera module according to the embodiment is not deformed.

7 to 17 are diagrams illustrating a process of manufacturing a camera module according to an embodiment. In the description of the manufacturing method, reference is made to the description of the foregoing lens units and the camera module. That is, the description of the foregoing lens units and camera module may be essentially combined with the description of the present manufacturing method.

Referring to FIG. 7, a first preliminary lens array substrate 102 including a plurality of first lens parts 110 is provided. The first preliminary lens array substrate 102 may be formed by various methods such as an injection process.

In addition, a first mask 60 is disposed on the first preliminary lens array substrate 102. The first mask 60 includes a first blocking region 61 corresponding to the first lens parts 110 and a first transmission region 62 around the first blocking region 61.

The first mask 60 is a screen that selectively covers the first lens units 110. That is, the first mask 60 exposes regions other than the first lens parts 110.

Referring to FIG. 8, a resin composition including colored dye is printed on the first preliminary lens array substrate 102 through the first mask 60. The resin composition is coated on a region other than the region in which the first lens units 110 are disposed.

That is, the resin composition is blocked by the first blocking region 61. In addition, the resin composition passes through the first transmission region 62 and is coated on the first preliminary lens array substrate 102.

Thereafter, the printed resin composition is cured by light and / or heat, and a first lens array substrate 101 including the first preliminary lens array substrate 102 and the first light blocking film 131 coated thereon is formed. do.

Referring to FIG. 9, a second preliminary lens array substrate 202 including a plurality of second lens parts 210 is provided. Thereafter, a second mask 70 is disposed on the second preliminary lens array substrate 202.

The second mask 70 includes a second blocking area 71 corresponding to the second lens parts 210 and a second transmission area 72 around the second blocking area 71. The second mask 70 is a screen selectively covering the second lens parts 210. That is, the second mask 70 exposes regions other than the second lens parts 210.

Thereafter, a resin composition is printed on the second preliminary lens array substrate 202 through the second mask 70. That is, the resin composition is printed through the second transmission region 72 to form a second light blocking film 231 on the second preliminary lens array substrate 202.

Referring to FIG. 10, a third mask 80 is disposed on the second light blocking film 231. The third mask 80 includes a third blocking region 81 and a third transmission region 82.

The third blocking area 81 corresponds to the second lens parts 210. The third blocking area 81 may be larger than the second blocking area 71. For example, the diameter of the third blocking region 81 may be larger than the diameter of the second blocking region 71. That is, the planar area of the third blocking area 81 may be larger than the second blocking area 71.

The third mask 80 is a screen selectively covering the second lens parts 210. That is, the third mask 80 exposes regions other than the second lens parts 210.

Referring to FIG. 11, a resin composition is printed on the second light blocking film 231 through the third mask 80. That is, the resin composition is printed through the third transmission region 82 to form a third light blocking film 241 on the second light blocking film 231.

Since the third blocking area 81 is larger than the second blocking area 71, the open areas 242 of the third light blocking film 241 are open areas 232 of the second light blocking film 231. Greater than)

Since the first light blocking film 131, the second light blocking film 231, and the third light blocking film 241 are formed by a printing method such as a screen printing method, the first preliminary lens array substrate 102 and the first light blocking film 131 are formed. 2 may be precisely aligned with the preliminary lens array substrate 202. That is, the first light blocking film 131, the second light blocking film 231, and the third light blocking film 241 may be formed at a desired position.

Accordingly, the second preliminary lens array substrate 202, the second light blocking film 231, and the third light blocking film 241 and the second lens array substrate 201 are formed.

Referring to FIG. 12, the first lens array substrate 101, the second lens array substrate 201, the optical filter plate 301, the first film 401, the second film 501, and the third film 601 and the fourth film 701 are stacked and arranged. In this case, the second lens array substrate may be disposed upside down.

The optical filter plate 301 has the same structure as the optical filter 300 described above. That is, the optical filter plate 301 has the same optical characteristics and thickness as the optical filter 300.

The first film 401 includes a plurality of first through holes 410. The first film 401 is formed of the same material as the first spacer 400 in the previous camera module. In addition, the thickness of the first film 401 is the same as the first spacer 400.

The second film 501 includes a plurality of second through holes 510. The second film 501 is formed of the same material as the second spacer 500 in the previous camera module. In addition, the thickness of the second film 501 is the same as the second spacer 500.

The third film 601 includes a plurality of third through holes 610. The third film 601 is formed of the same material as the third spacer 600 in the previous camera module. In addition, the thickness of the third film 601 is the same as the third spacer 600.

The fourth film 701 includes a plurality of fourth through holes 710. The fourth film 701 is formed of the same material as the light blocking part 700 in the previous camera module. In addition, the thickness of the fourth film 701 is the same as the light blocking part 700.

Referring to FIG. 13, the first lens parts 110, the second lens parts 210 and 210, the first transmission holes 410, the second transmission holes 510, and the third The through holes 610 and the fourth through holes 710 are aligned with each other.

In this state, the third film 601, the optical filter plate 301, the second film 501, the first lens array substrate 101, the first film 401, the second The lens array substrate 201 and the fourth film 701 are sequentially stacked and adhered to each other.

Referring to FIG. 14, the third film 601, the optical filter plate 301, the second film 501, the first lens array substrate 101, the first film 401, and the first agent The two lens array substrate 201 and the fourth film 701 are simultaneously cut, and a plurality of lens assemblies 20 are formed.

That is, the first lens array substrate 101 is cut into a square or rectangular shape and separated into a plurality of first lens units 100.

Similarly, the second lens array substrate 201, the optical filter plate 301, the first film 401, the second film 501, the third film 601, and the fourth film 701. Each of the plurality of second lens units 200, the plurality of optical filters 300, the plurality of first spacers 400, the plurality of second spacers 500, and the plurality of third spacers ( 600) and a plurality of light blocking parts 700.

Alternatively, the third film 601 and the optical filter plate 301 may be adhered separately and cut separately. In addition, the second film 501, the first lens array substrate 101, the first film 401, the second lens array substrate 201, and the fourth film 701 may be sequentially stacked. , Can be glued to each other and cut. Subsequently, the optical filters 300 may be adhered to the second spacers 500 to form lens assemblies 20 according to the embodiment.

Referring to FIG. 15, the sensor units 10 are attached to the lens assemblies 20, respectively, and a camera module according to the embodiment is formed.

As such, the third film 601, the optical filter plate 301, the second film 501, the first lens array substrate 101, the first film 401, and the second lens array Since the substrate 201 and the fourth film 701 are cut at the same time, the first lens unit 100, the second lens unit 200, the optical filter 300, and the first spacer 400. The second spacer 500, the third spacer 600, and the light blocking part 700 have the same cut surface.

Therefore, the manufacturing method of the embodiment can easily manufacture the lens assemblies 20, and can easily provide a camera module having improved heat resistance, mechanical and optical properties.

16 and 17 illustrate a process in which the camera module 1 is bonded to the main substrate 40 according to the embodiment.

Referring to FIG. 16, a plurality of solders 50 are disposed on the main substrate 40. Then, the camera module 1 according to the embodiment may be aligned on the solders 50.

Referring to FIG. 17, the camera module 1 according to the embodiment is disposed on the solders 50, the solders 50, the main substrate 40, and the camera module 1 according to the embodiment. Heat is applied to the whole.

Accordingly, the temperatures of the solders 50 and the camera module 1 according to the embodiment may be raised to about 200 ° C to about 300 ° C. Accordingly, the solders 50 are softened, and the camera module 1 according to the embodiment is bonded to the main substrate 40.

At this time, since the camera module 1 according to the embodiment has high heat resistance, such a reflow process may be performed. In addition, in such a reflow process, the camera module 1 according to the embodiment is not deformed.

In addition, the features, structures, effects and the like described in the embodiments are included in at least one embodiment of the present invention, and are not necessarily limited to only one embodiment. Furthermore, the features, structures, effects, and the like illustrated in the embodiments may be combined or modified with respect to other embodiments by those skilled in the art to which the embodiments belong. Therefore, it should be understood that the present invention is not limited to these combinations and modifications.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood that various modifications and applications are possible. For example, each component specifically shown in the embodiment can be modified. And differences relating to such modifications and applications will have to be construed as being included in the scope of the invention defined in the appended claims.

Claims (14)

A lens unit having a curved surface;
A support portion disposed around the lens portion; And
The lens unit comprising a first light shielding layer directly coated on the support. The lens unit of claim 1, wherein the first light blocking layer comprises an epoxy resin or a polyimide. The lens unit of claim 1, wherein the first light blocking layer has a thickness of about 5 μm to about 20 μm. The method of claim 1, further comprising a second light shielding layer coated on the first light shielding layer,
The first light blocking layer includes a first open area corresponding to the lens unit.
The second light blocking layer includes a second open area that is larger than the first open area. The lens unit of claim 4, wherein an outside of the second open area surrounds the circumference of the first open area. The lens unit of claim 1, wherein the side surface of the support portion and the side surface of the light blocking portion are disposed on the same plane. The lens unit of claim 1, wherein the first light blocking layer is colored and blocks light. A lens unit having a curved surface; A support portion disposed around the lens portion; And a first light blocking layer coated directly on the support part.
A second lens unit disposed on the first lens unit; And
A camera module comprising a sensor unit disposed below the first lens unit. The camera module of claim 8, further comprising a spacer interposed between the first lens unit and the second lens unit. The camera module of claim 8, wherein the first light blocking layer comprises a plastic having a glass transition temperature of about 10 degrees. The camera module of claim 8, wherein the second lens unit is directly bonded to the light blocking layer. Forming a first preliminary lens array substrate;
Printing an opaque material on the first preliminary lens array substrate to form a first lens array substrate including a first light blocking layer;
And cutting the first lens array substrate. The method of claim 12, wherein the forming of the first lens array substrate comprises:
Disposing a mask on the first preliminary lens array substrate; And
Coating the opaque material on the first preliminary lens array substrate through the mask. 13. The method of claim 12, further comprising: bonding a second lens array substrate on the light blocking layer; And
And cutting the first lens array substrate, wherein the second lens array substrate is cut.

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