Optical structure and optical module
By providing a reflective projection on the cover of the optical structure, the light emitted by the chip is reflected and emitted from the side, which solves the problem of low brightness due to low light output angle of the CSP chip, and achieves a larger light output angle and higher brightness effects.
Patent Information
- Application Number
- CN202420663058.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-03-29
AI Technical Summary
The chip light output angle of the existing CSP is small, resulting in low brightness and inability to effectively emit light from the side.
An optical structure is designed, including a transparent base, a chip and a cover body. The cover body is provided with a surface reflective projection toward one side of the transparent base, so that the light emitted by the chip is reflected by the projection and emits from the side of the transparent base.
By increasing the light output angle of the chip, the luminous intensity on the side of the transparent base is increased, the brightness of the optical structure is increased, and the brightness of the cover is effectively reduced to reduce its thickness.
Smart Images
Figure CN222840033U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of optical technology, in particular to an optical structure and an optical module. Background Art
[0002] After the chip is packaged in the existing CSP (Chip Scale Package, semiconductor packaging technology), the light emission angle of the chip is small, so that most of the light cannot be effectively emitted from the side of the CSP, resulting in low brightness of the CSP. Utility Model Content
[0003] In view of this, the purpose of the present invention is to overcome the deficiencies in the prior art and to provide an optical structure and an optical module.
[0004] In a first aspect, the utility model provides an optical structure, comprising:
[0005] A transparent base, wherein along a first direction, the transparent base has a first surface and a second surface that are arranged opposite to each other, and the transparent base is provided with a clearance groove penetrating the first surface and a mounting groove penetrating the second surface;
[0006] A chip is disposed in the mounting groove, and a light emitting portion of the chip faces the first surface;
[0007] A cover body is arranged on the first surface, and at least one protrusion is arranged on a side of the cover body facing the transparent base, and a surface of the protrusion is in contact with a groove wall of the clearance groove;
[0008] The second surface and the surface of the raised portion are both reflective surfaces.
[0009] Furthermore, there is one protrusion, and the protrusion is arranged at the center of the cover body.
[0010] Furthermore, there is a gap between the clearance groove and the installation groove.
[0011] Furthermore, the central axis of the clearance groove coincides with the central axis of the installation groove.
[0012] Furthermore, the chip is in contact with a groove wall of the mounting groove, and a side of the chip facing away from the first surface is located in the same plane as the second surface.
[0013] Furthermore, the protrusions are multiple;
[0014] A plurality of protrusions are arranged at intervals on the edge of the cover body.
[0015] Furthermore, at least one protrusion is provided between two adjacent vertex corners of the cover body.
[0016] Furthermore, the protrusion includes at least any one of a hemisphere, a cone or a pyramid.
[0017] Furthermore, the transparent base at least includes any one of a transparent silicone layer, an epoxy layer, and a fluorescent glue layer, or a combination of two or more thereof.
[0018] In a second aspect, the utility model provides an optical module, comprising the optical structure.
[0019] The embodiments of the utility model have the following advantages: a convex portion with a reflective surface is provided on the side of the cover body facing the transparent base, so that when the light emitted by the light-emitting portion of the chip is irradiated on the convex portion, it is reflected on the convex portion; because the surface of the convex portion is a curved surface, therefore, when a part of the light is irradiated on the surface of the convex portion, it is reflected on the surface of the convex portion, so that a part of the light irradiated on the surface of the convex portion is reflected by the surface of the convex portion, and then enters the second surface, and after being reflected by the second surface, it is emitted from the side of the transparent base; a part of the light is reflected by the surface of the convex portion and directly emitted from the side of the transparent base; the rest of the light is reflected by the surface of the convex portion and emitted from the first surface, that is, most of the light emitted by the light-emitting portion of the chip is reflected by the convex portion and emitted from the side of the transparent base, which can not only increase the light output angle of the chip, but also effectively reduce the brightness of the cover body to achieve the purpose of reducing the thickness of the cover body, improve the luminous intensity of the side of the transparent base, and improve the brightness of the optical structure.
[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0022] Figure 1 A schematic diagram of a viewing angle structure of a first implementation manner in an optical structure provided by some embodiments of the utility model is shown;
[0023] Figure 2 Another perspective structural schematic diagram of a first implementation manner in an optical structure provided by some embodiments of the utility model is shown;
[0024] Figure 3 Shows Figure 2 Cross-sectional view of the middle AA section;
[0025] Figure 4 A schematic diagram of a viewing angle structure of a transparent base in a first embodiment of an optical structure provided by some embodiments of the utility model is shown;
[0026] Figure 5 A schematic diagram of a cover body in a first embodiment of an optical structure provided by some embodiments of the utility model is shown;
[0027] Figure 6 A schematic diagram of a viewing angle structure of a second implementation manner in an optical structure provided by some embodiments of the utility model is shown;
[0028] Figure 7 Shows Figure 6 A cross-sectional view of the middle BB section;
[0029] Figure 8 A schematic diagram of a structural view of a cover body in a second embodiment of an optical structure provided by some embodiments of the utility model is shown;
[0030] Fig. 9 A schematic diagram of a viewing angle structure of a third implementation manner in an optical structure provided by some embodiments of the utility model is shown;
[0031] Fig.10 Shows Fig. 9 Cross-sectional view of the middle CC section;
[0032] Fig.11 A schematic structural diagram of a cover body in a third embodiment of an optical structure provided by some embodiments of the utility model is shown;
[0033] Fig.12 Schematic diagrams of other viewing angle structures of a transparent base in an optical structure provided by some embodiments of the utility model are shown.
[0034] Description of main component symbols:
[0035] 100 - transparent base; 110 - first surface; 120 - second surface; 130 - clearance groove; 140 - mounting groove; 200 - chip; 300 - cover body; 310 - raised portion. DETAILED DESCRIPTION
[0036] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0037] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. In contrast, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.
[0038] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the template herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.
[0041] like Figures 1 to 12 As shown, some embodiments of the utility model provide an optical structure, which is mainly used in the field of LED technology to make the chip emit light at a larger angle and effectively reduce the brightness of the lamp, thereby thinning the thickness of the original reflective layer.
[0042] Specifically, the optical structure includes a transparent base 100 , a chip 200 and a cover 300 .
[0043] Along a first direction, the transparent base 100 has a first surface 110 and a second surface 120 that are oppositely disposed, wherein the first surface 110 and the second surface 120 are parallel to each other.
[0044] The transparent base 100 is provided with a recess 130 penetrating the first surface 110 , wherein the recess 130 may be any one of a conical recess, a hemispherical recess, a cylindrical recess, or a combination of two or more. In addition, the transparent base 100 is further provided with a mounting recess 140 penetrating the second surface 120 .
[0045] It should be noted that the cover 300 is a high reflection layer.
[0046] In addition, the chip 200 can be used as a light source including but not limited to blue light (used to excite the fluorescent layer on the surface of the base), white light, and RGB three primary colors, and can also set the luminous color of the transparent base 100 according to actual conditions to meet the different needs of users and enhance the user experience.
[0047] In this embodiment, the forming method of the clearance groove 130 and the installation groove 140 at least includes any one of laser etching, injection molding, molding, milling cutter, and stamping.
[0048] It should be noted that, along the first direction, the notch of the clearance groove 130 and the notch of the installation groove 140 are arranged in opposite directions, that is, the notch of the clearance groove 130 faces the side of the first surface 110 away from the second surface 120, and the notch of the installation groove 140 faces the side of the second surface 120 away from the first surface 110. Furthermore, there is a gap between the clearance groove 130 and the installation groove 140.
[0049] In this embodiment, the shape of the transparent base 100 can be at least one of a cylindrical shape, a polygonal shape, a rectangular shape, and a cube shape, or a combination of two or more of the above shapes, and can be specifically set according to actual conditions.
[0050] The chip 200 is disposed in the mounting groove 140 , and the connection between the chip 200 and the groove wall of the mounting groove 140 includes any one of bonding and clamping.
[0051] Specifically, the light-emitting portion of the chip 200 faces the first surface 110 , that is, the light emitted by the light-emitting portion of the chip 200 can completely cover the first surface 110 .
[0052] In this embodiment, in order to improve the uniformity of distribution of light emitted by the chip 200 on the transparent base 100, the chip 200 is arranged in the middle of the second surface 120, that is, the mounting groove 140 is arranged in the middle position of the second surface 120, so that the light emitted by the chip 200 can be evenly distributed in the transparent base 100 and emitted from the side of the transparent base 100.
[0053] In addition, the cover 300 is disposed on the first surface 110 , and at least one protrusion 310 is disposed on a side of the cover 300 facing the transparent base 100 , and a surface of the protrusion 310 is in contact with a wall of the recess 130 .
[0054] It should be noted that, in this embodiment, the second surface 120 and the surface of the raised portion 310 are both reflective surfaces, so that the light emitted by the light-emitting portion of the chip 200 can be reflected on the second surface 120 and the surface of the raised portion 310, thereby adjusting the distribution of light in the transparent base 100.
[0055] Specifically, in this embodiment, the second surface 120 is a plane, so when the light emitted by the light emitting portion of the chip 200 irradiates the second surface 120 , a portion of the light refracted by the second surface 120 is emitted through the first surface 110 .
[0056] Another part of the light is emitted through the side of the transparent base 100. By providing a convex portion 310 with a reflective surface on the side of the cover 300 facing the transparent base 100, the light emitted by the light emitting part of the chip 200 is reflected on the convex portion 310 when it is irradiated on the convex portion 310.
[0057] Since the surface of the raised portion 310 is a curved surface, when a portion of the light is irradiated onto the surface of the raised portion 310, it is reflected on the surface of the raised portion 310, so that a portion of the light irradiated onto the surface of the raised portion 310 is reflected by the surface of the raised portion 310, and then enters the second surface 120, and after being reflected by the second surface 120, it is emitted from the side of the transparent base 100.
[0058] A portion of the light is reflected by the surface of the protrusion 310 and then directly emitted from the side of the transparent base 100 , and the remaining portion of the light is reflected by the surface of the protrusion 310 and then emitted from the first surface 110 .
[0059] It can be understood that by providing a protrusion 310 on the side of the cover 300 facing the transparent base 100, most of the light emitted by the light-emitting part of the chip 200 is reflected by the protrusion 310 and then emitted from the side of the transparent base 100, which not only increases the light output angle of the chip 200, but also effectively reduces the brightness of the cover 300 to achieve the purpose of reducing the thickness of the cover 300, thereby improving the luminous intensity of the side of the transparent base 100 and improving the brightness of the optical structure.
[0060] It should be noted that experiments have shown that by providing the protrusion 310 on the side of the cover 300 facing the transparent base 100 , not only the four-side light-emitting CSP chip can be thinned by 10% to 30%, but also the cost can be reduced.
[0061] Furthermore, in this embodiment, the ratio between the diameter D of the notch of the giving way groove 130 and the outer diameter d of the chip 200 is n, wherein the value range of n is 0.3≤n≤3, which can be specifically set according to actual conditions.
[0062] like Figure 2 As shown, in some embodiments of the present invention, there is one protrusion 310 , and the protrusion 310 is disposed at the center of the cover body 300 .
[0063] In this embodiment, a regular quadrangular prism is taken as an example for specific description.
[0064] For example, see Figure 5 In this embodiment, the protrusion 310 is a hemisphere, and there is a distance between the side of the hemisphere facing the chip 200 and the chip 200, and the distance can be specifically set according to actual conditions.
[0065] In addition, it should be noted that the reflection angle of light irradiated on the surface of the hemisphere is adjusted by adjusting the diameter of the hemisphere, thereby controlling the amount of light reflected by the hemisphere and emitted from the side of the transparent base 100 .
[0066] like Figure 3 , Figure 7 and Fig.12 As shown, in some embodiments of the present invention, the central axis of the give way groove 130 coincides with the central axis of the mounting groove 140, so that when the chip 200 is installed in the mounting groove 140, the light-emitting portion of the chip 200 can be located on the central axis of the mounting groove 140, so that the light emitted by the light-emitting portion of the chip 200 can completely cover the first surface 110, so as to avoid the situation where the light emitted by the light-emitting portion of the chip 200 has a blind spot on the first surface 110.
[0067] In some embodiments of the present invention, the chip 200 is fitted with the groove wall of the mounting groove 140, and the side of the chip 200 facing away from the first surface 110 is located in the same plane as the second surface 120, so that after the light emitted by the chip 200 is reflected by the first surface 110, a part of the light can be emitted from the second surface 120, so as to ensure that the light emitted by the chip 200 can be evenly emitted from the side and the second surface 120 of the transparent base 100 after being reflected by the raised portion 310 and the first surface 110, thereby improving the uniformity of the light emission of the transparent base 100.
[0068] like Fig.11As shown, in some embodiments of the present invention, there are multiple protrusions 310. The number of protrusions 310 can be two or more than two, and can be set according to actual conditions.
[0069] The plurality of protrusions 310 are disposed at intervals on the edge of the cover body 300 , and the plurality of protrusions 310 are arranged at equal intervals on the edge of the cover body 300 .
[0070] Specifically, along the first direction, the axes of the plurality of raised portions 310 are enclosed to form a regular polygonal prism structure, which can not only ensure the uniformity of light emission from the edge of the transparent base 100, but also further increase the light intensity on the side of the transparent base 100, that is, improve the brightness of the side of the transparent base 100.
[0071] like Fig.11 As shown, in some embodiments of the present invention, at least one protrusion 310 is provided between two adjacent vertex corners of the cover body 300 .
[0072] It can be understood that one protrusion 310 is provided between two adjacent vertices of the cover body 300; or a plurality of protrusions 310 spaced apart are provided between two adjacent vertices of the cover body 300, which can be specifically set according to actual conditions.
[0073] In this embodiment, a convex portion 310 is provided between two adjacent vertices of the cover body 300 as an example for specific description.
[0074] It should be noted that, by arranging the protrusion 310 between two adjacent top corners of the cover body 300, the light emitted by the light-emitting part of the chip 200 is reflected by the surface of the protrusion 310 and then emitted from the angle of the cover body 300, that is, emitted from the corner of the side of the transparent base 100, so as to improve the brightness at the corner of the transparent base 100. In this way, when multiple optical structures are arranged in a matrix to form an optical module, the brightness at the corners of adjacent optical structures is low, or even black spots appear, thereby improving the uniformity of brightness at each position in the optical module.
[0075] Preferably, in this embodiment, the raised portion 310 is arranged in the middle between two adjacent vertex corners to further improve the uniformity of the reflected light emitted from the chip 200 after being reflected by the raised portion 310 and emitted from the two adjacent vertex corners respectively, which can not only improve the luminous intensity at the four vertex corners of the transparent base 100, but also ensure the uniformity of the luminous brightness at the four vertex corners of the transparent base 100.
[0076] Specifically, Figures 6 to 8As shown, in this embodiment, the protrusion 310 is a reflective pyramid or cone, so that most of the light emitted by the light-emitting portion of the chip 200 can be evenly emitted from two adjacent vertex corners of the transparent base 100 after being reflected by the surface of the protrusion 310 .
[0077] It should be noted that, based on any of the above embodiments, in some embodiments of the present invention, the protrusion 310 includes at least one of a hemisphere, a cone or a pyramid, which can be specifically set according to actual conditions.
[0078] For example, see Figures 9 to 11 In this embodiment, the raised portion 310 is a polygonal pyramid, the apex of the polygonal pyramid is directly opposite to the light-emitting portion of the chip 200, and the axis of the polygonal pyramid coincides with the axis of the light-emitting portion of the chip 200, so that the light emitted by the light-emitting portion of the chip 200 can be evenly irradiated onto the surface of the polygonal pyramid, and the light is reflected by the raised portion 310, so that the light irradiated onto the surface of the polygonal pyramid is emitted from the side of the transparent base 100, so as to enhance the brightness of the side of the transparent base 100.
[0079] It should be noted that by adjusting the vertex angle of the polygonal pyramid, the reflection angle of light irradiated on the surface of the polygonal pyramid is adjusted, thereby adjusting the amount of light emitted from the side of the transparent base 100 after reflection through the polygonal pyramid.
[0080] In some embodiments of the utility model, the transparent base 100 includes at least one of a transparent silicone layer, an epoxy layer, and a fluorescent glue layer, or a combination of two or more thereof. This not only ensures the light transmittance quality of the transparent base 100, but also enables the light transmittance color of the transparent base 100 to be set according to actual conditions to meet different needs of users and enhance the user experience.
[0081] It should be noted that the fluorescent adhesive layer is made of biaxially stretched polypropylene film as the base material and coated with a pressure-sensitive adhesive. It is brightly colored and fluorescent, but does not affect the transparent effect. It can be used as the focus of written signs to enhance the visual effect and is particularly suitable for creative decoration.
[0082] Transparent silicone is a colorless or skin-colored oily liquid that becomes a soft elastic material after vulcanization. It can be used for a long time in the temperature range of -65℃ to 200℃ and maintain its soft and elastic properties. It has electrical properties and chemical stability, is resistant to water, ozone, and weathering, is non-corrosive, physiologically inert, non-toxic and odorless, and has low linear shrinkage.
[0083] Other embodiments of the present application provide an optical module, comprising the optical structure described in any of the above embodiments.
[0084] It should be noted that the optical module has the characteristics and technical effects of the optical structure described in any of the above embodiments, which will not be described in detail here.
[0085] In all examples shown and described herein, any specific values should be interpreted as merely exemplary and not as limiting, and thus other examples of the exemplary embodiments may have different values.
[0086] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0087] The above-mentioned embodiments only express several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.
Claims
1. An optical structure, characterized in that: include: A transparent base, wherein along a first direction, the transparent base has a first surface and a second surface that are arranged opposite to each other, and the transparent base is provided with a clearance groove penetrating the first surface and a mounting groove penetrating the second surface; A chip is disposed in the mounting groove, and a light emitting portion of the chip faces the first surface; A cover body is arranged on the first surface, and at least one protrusion is arranged on a side of the cover body facing the transparent base, and a surface of the protrusion is in contact with a groove wall of the clearance groove; The second surface and the surface of the raised portion are both reflective surfaces.
2. The optical structure according to claim 1, characterized in that: There is one protrusion, and the protrusion is arranged at the center of the cover body.
3. The optical structure according to claim 1, characterized in that: There is a gap between the clearance groove and the installation groove.
4. The optical structure according to claim 1, characterized in that: The central axis of the clearance groove coincides with the central axis of the installation groove.
5. The optical structure according to claim 1, characterized in that: The chip is in contact with the groove wall of the mounting groove, and a side of the chip facing away from the first surface is located in the same plane as the second surface.
6. The optical structure according to claim 1, characterized in that: There are multiple protrusions; A plurality of protrusions are arranged at intervals on the edge of the cover body.
7. The optical structure according to claim 6, characterized in that: At least one protrusion is provided between two adjacent vertex corners of the cover body.
8. The optical structure according to any one of claims 1 to 7, characterized in that: The protrusion includes at least one of a hemisphere, a cone or a pyramid.
9. The optical structure according to claim 8, characterized in that: The transparent base at least includes any one of a transparent silicone layer, an epoxy layer, and a fluorescent glue layer, or a combination of two or more thereof.
10. An optical module, characterized in that: The optical structure comprises the optical structure as claimed in any one of claims 1 to 9.