Distance detection module and electronic device

Abstract

This application discloses a distance detection module and an electronic device, belonging to the field of distance detection technology. The distance detection module includes a support component, a light-emitting component, a photosensitive component, and an encapsulation component; the support component has a triangular longitudinal cross-section and is provided with a first mounting surface, a second mounting surface, and a bottom surface. A light-shielding portion is provided between the first mounting surface and the second mounting surface, and the light-shielding portion is located on the side of the support component away from the bottom surface; the light-emitting component is disposed on the first mounting surface for emitting light; the photosensitive component is disposed on the second mounting surface for receiving light; the encapsulation component is encapsulated on the outside of the photosensitive component and the light-emitting component, and the light-shielding portion protrudes from the encapsulation component.

Description

Technical Field

[0001] This application belongs to the field of distance detection technology, specifically relating to a distance detection module and an electronic device. Background Technology

[0002] In related technologies, electronic devices are equipped with distance sensors that detect the distance between the electronic device and a human body. The distance sensor includes a circuit board, a light-emitting component, and a photosensitive component, with the light-emitting and photosensitive components arranged side-by-side on the circuit board. To prevent light emitted by the light-emitting component from directly reaching the photosensitive component, a light-blocking cover is also required. This cover encloses both the light-emitting and photosensitive components, thus isolating them. However, isolating the light-emitting and photosensitive components with a light-blocking cover results in a relatively large overall size of the distance sensor. Utility Model Content

[0003] This application aims to provide a distance detection module and electronic device that at least solves one of the problems of the large overall size of the distance sensor caused by isolating the light-emitting component and the light-sensing component by using a light-blocking cover.

[0004] To solve the above-mentioned technical problems, this application is implemented as follows: In a first aspect, embodiments of this application propose a distance detection module, including a support component, a light-emitting component, a photosensitive component, and an encapsulation component; the support component has a triangular longitudinal cross-section, and the triangular support component is provided with a first mounting surface, a second mounting surface, and a bottom surface, with a light-shielding portion between the first mounting surface and the second mounting surface, the light-shielding portion being located on the side of the support component away from the bottom surface; the light-emitting component is disposed on the first mounting surface for emitting light; the photosensitive component is disposed on the second mounting surface for receiving light; the encapsulation component is encapsulated on the outside of the photosensitive component and the light-emitting component, and the light-shielding portion protrudes from the encapsulation component.

[0005] Secondly, embodiments of this application propose an electronic device including a distance detection module as described in any of the above technical solutions.

[0006] In the embodiments of this application, the distance detection module includes a support component, a light-emitting component, and a photosensitive component. The support component has a first mounting surface and a second mounting surface. The light-emitting component and the photosensitive component are respectively disposed on the first mounting surface and the second mounting surface, realizing the installation and fixation of the light-emitting component and improving the stability of the light-emitting component during use. When detecting the distance between the target and the distance detection module, the light-emitting component emits light. After the light shines on the target, it is reflected back to the photosensitive component. The support component blocks the light from passing directly from the light-emitting component to the photosensitive component without passing through the target. The distance between the target and the distance detection module can be detected by calculating the time difference between the light emitted by the light-emitting component and the light received by the photosensitive component. The first mounting surface and the second mounting surface are the two surfaces of the support component with a triangular longitudinal cross-section. The light-emitting component and the photosensitive component are respectively disposed on the first mounting surface and the second mounting surface, so that the support component can block the light emitted by the light-emitting component from directly transmitting to the photosensitive component, thereby achieving light blocking between the light-emitting component and the photosensitive component and improving the accuracy of distance detection by the distance detection module. The light-shielding part is located between the first mounting surface and the second mounting surface, and the light-shielding part protrudes from the encapsulation component. The light-shielding part can further block the light emitted by the light-emitting component from being transmitted directly to the photosensitive component without passing through the target, further reducing the impact of light scattering on the detection accuracy of the distance detection module and improving the accuracy of the distance detection module in detecting the target position.

[0007] By using a support component to block light from passing through the target and allowing it to travel directly from the light-emitting component to the photosensitive component, the distance detection module no longer needs a light shield to prevent light from directly passing from the light-emitting component to the photosensitive component. This simplifies the structure of the distance detection module, reduces its size, and consequently reduces the space it occupies within the electronic device. Since the distance detection module no longer needs a light shield to prevent light from directly passing from the light-emitting component to the photosensitive component, the probability of damage due to the light shield detaching is reduced, thus improving the stability of the distance detection module during use.

[0008] The distance detection module also includes a packaging component, which is encapsulated on the outside of the photosensitive and light-emitting components. This protects the photosensitive and light-emitting components and reduces the probability of damage caused by external forces. The simultaneous encapsulation of both the photosensitive and light-emitting components provides a larger contact area between the packaging component and the supporting component, resulting in higher contact strength and reducing the probability of the packaging component detaching. This further enhances the stability of the packaging component, light-emitting component, and photosensitive component during the use of the distance detection module.

[0009] The first mounting surface and the second mounting surface have an included angle, so that the first mounting surface and the second mounting surface are no longer arranged side by side horizontally, which further reduces the limitation of the first mounting surface and the second mounting surface on the horizontal dimension of the distance detection module, reduces the volume of the distance detection module, and thus reduces the space occupied by the distance detection module in the internal space of the electronic device.

[0010] Since the electronic device includes a distance detection module as described in any of the above technical solutions, the electronic device possesses all the beneficial effects of a distance detection module as described in any of the above technical solutions.

[0011] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0012] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is one of the schematic diagrams of a distance detection module according to an embodiment of this application; Figure 2 This is one of the schematic diagrams of the light transmission path of the distance detection module according to an embodiment of this application; Figure 3 This is a second schematic diagram of the light transmission path of the distance detection module according to an embodiment of this application; Figure 4 This is a second schematic diagram of a distance detection module according to an embodiment of this application; Figure 5 This is a third schematic diagram of a distance detection module according to an embodiment of this application; Figure 6 This is a schematic diagram of the welding of the light-emitting component, the photosensitive component, and the flexible circuit board according to an embodiment of this application; Figure 7 This is a schematic diagram of a support component according to an embodiment of this application; Figure 8 This is an assembly diagram of a flexible circuit board and a support component according to an embodiment of this application.

[0013] Figure label: 100 Distance detection module, 110 Support component, 112 First mounting surface, 114 Second mounting surface, 115 Bottom surface, 116 Light-shielding part, 118 Conductive through hole, 120 Light-emitting component, 130 Photosensitive component, 140 Encapsulation component, 142 Transparent area, 144 Non-transparent area, 146 First wall surface, 148 Second wall surface, 150 Reflective layer, 160 Light-shielding layer, 170 Flexible circuit board, 180 Solder ball, 200 Screen, 300 Infrared window, 500 Target, 600 Conductive adhesive, 700 Double-sided adhesive. Detailed Implementation

[0014] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0015] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0016] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0017] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0018] The following is combined Figures 1 to 8 This application describes a distance detection module 100 and an electronic device according to embodiments thereof.

[0019] like Figure 1 and Figure 2As shown, a distance detection module 100 according to some embodiments of this application includes a support member 110, a light-emitting member 120, a photosensitive member 130, and an encapsulation member 140. The longitudinal cross-section of the support member 110 is triangular, and the triangular support member 110 is provided with a first mounting surface 112, a second mounting surface 114, and a bottom surface 115. A light-shielding portion 116 is provided between the first mounting surface 112 and the second mounting surface 114, and the light-shielding portion 116 is located on the side of the support member 110 away from the bottom surface 115. The light-emitting member 120 is disposed on the first mounting surface 112 for emitting light. The photosensitive member 130 is disposed on the second mounting surface 114 for receiving light. The encapsulation member 140 is encapsulated on the outside of the photosensitive member 130 and the light-emitting member 120, and the light-shielding portion 116 protrudes from the encapsulation member 140.

[0020] In this embodiment, the distance detection module 100 includes a support component 110, a light-emitting component 120, and a photosensitive component 130. The support component 110 is provided with a first mounting surface 112 and a second mounting surface 114. The light-emitting component 120 and the photosensitive component 130 are respectively disposed on the first mounting surface 112 and the second mounting surface 114, thereby enabling the installation and fixation of the light-emitting component 120 and improving the stability of the light-emitting component 120 during use. When the distance detection module 100 detects the distance between the target 500 and the distance detection module 100, the light-emitting component 120 emits light. After the light shines on the target 500, it is reflected back to the photosensitive component 130. The support component 110 blocks the light from passing directly from the light-emitting component 120 to the photosensitive component 130 without passing through the target 500. Therefore, the distance between the target 500 and the distance detection module 100 can be detected by calculating the time difference between the light emitted by the light-emitting component and the light received by the photosensitive component 130. The first mounting surface 112 and the second mounting surface 114 are the two surfaces of the support member 110 with a triangular longitudinal cross-section. The light-emitting component 120 and the photosensitive component 130 are respectively disposed on the first mounting surface 112 and the second mounting surface 114, so that the support member 110 can block the light generated by the light-emitting component 120 from being directly transmitted to the photosensitive component 130, thereby achieving light blocking between the light-emitting component 120 and the photosensitive component 130 and improving the accuracy of distance detection by the distance detection module 100. The light-shielding part 116 is located between the first mounting surface 112 and the second mounting surface 114, and the light-shielding part 116 protrudes from the encapsulation member 140. The light-shielding part 116 can further block the light emitted by the light-emitting component 120 from being directly transmitted to the photosensitive component 130 without passing through the target 500, further reducing the impact of light scattering on the detection accuracy of the distance detection module 100 and improving the accuracy of the distance detection module 100 in detecting the position of the target 500.

[0021] By using the support component 110 to prevent light from passing directly from the target 500 to the light-emitting component 120 and then directly to the photosensitive component 130, the distance detection module 100 no longer needs a light shield to prevent light from directly passing from the light-emitting component 120 to the photosensitive component 130. This simplifies the structure of the distance detection module 100, reduces its size, and consequently reduces the space occupied by the distance detection module 100 within the electronic device. Since the distance detection module 100 no longer needs a light shield to prevent light from directly passing from the light-emitting component 120 to the photosensitive component 130, the probability of damage due to the light shield detaching is reduced, thus improving the stability of the distance detection module 100 during use. Furthermore, since the distance detection module 100 no longer needs a light shield to prevent light from directly passing from the light-emitting component 120 to the photosensitive component 130, the gap required to prevent the light shield from pressing against the encapsulation component 140 is also eliminated, further reducing the size of the distance detection module 100.

[0022] The distance detection module 100 also includes an encapsulation component 140, which is encapsulated on the outside of the photosensitive component 130 and the light-emitting component 120, thereby protecting the light-emitting component 120 and the photosensitive component 130 and reducing the probability of damage to the light-emitting component 120 and the photosensitive component 130 due to external forces. The encapsulation component 140, by encapsulating both the photosensitive component 130 and the light-emitting component 120, provides a larger contact area between the encapsulation component 140 and the support component 110, resulting in higher contact strength between the encapsulation component 140 and the support component 110, reducing the probability of the encapsulation component 140 detaching, and further improving the stability of the encapsulation component 140, the light-emitting component 120, and the photosensitive component 130 during the use of the distance detection module 100.

[0023] The first mounting surface 112 and the second mounting surface 114 have an included angle, so that the first mounting surface 112 and the second mounting surface 114 are no longer arranged side by side horizontally, further reducing the restriction of the first mounting surface 112 and the second mounting surface 114 on the horizontal dimension of the distance detection module 100, reducing the volume of the distance detection module 100, and thus reducing the space occupied by the distance detection module 100 in the internal space of the electronic device.

[0024] Specifically, the distance detection module 100 provided in this application can be used in electronic devices, for example, it can be set at the earpiece of an electronic device. The distance detection module 100 can detect whether the earpiece of the electronic device is near a human body, that is, detect whether there is a human body near the electronic device, thereby realizing the judgment of the usage status of the electronic device, so that the electronic device can turn off or turn on the screen 200 according to the usage status, and avoid the human body from accidentally touching the screen 200.

[0025] Specifically, the included angle between the first mounting surface 112 and the second mounting surface 114 is... Figure 1 The angle α shown is the angle between the first mounting surface 112 and the second mounting surface 114, which is less than 180 degrees.

[0026] Optionally, the light-emitting component 120 is a light-emitting diode (LED) or other types of light-emitting units.

[0027] The encapsulation component 140 is made of potting compound, and the encapsulation component 140, the light-emitting component 120, the photosensitive component 130 and the support component 110 are integrally injection molded.

[0028] Optionally, the support component 110 is a printed circuit board, and the encapsulation component 140 is resin. The resin simultaneously encapsulates both the photosensitive component 130 and the light-emitting component 120. The encapsulation material has a large bonding area with the printed circuit board, forming a high-strength outer frame that replaces the light-blocking cover. The overall encapsulation structure has high reliability and can address the stress problems caused by the reduced strength of the thinner and lighter mobile phone structure.

[0029] Optionally, the distance detection module 100 is an infrared distance sensor, or it can be other types of optical distance sensors.

[0030] According to some embodiments of this application, such as Figure 1 and Figure 2 As shown, the encapsulation component 140 has a first wall 146 and a second wall 148. The second wall 148 is arranged around the first wall 146. The first wall 146 has a light-transmitting area 142 and a light-blocking area 144. The light-transmitting area 142 is a curved surface that protrudes from the light-emitting component 120 away from the light-blocking area 144. The light emitted by the light-emitting component 120 is emitted and / or enters the encapsulation component 140 through the light-transmitting area 142.

[0031] In this embodiment, the encapsulation component 140 has a first wall 146 and a second wall 148. Light emitted by the light-emitting component 120 can be transmitted to the first wall 146 and the second wall 148. The second wall 148 is arranged around the first wall 146. The first wall 146 can serve as the emitting and receiving surface of the distance detection module 100, that is, light can be emitted from the first wall 146 towards the target 500, and light reflected by the target 500 can also be transmitted to the photosensitive component 130 through the first wall 146; the second wall 148 can serve as the side wall of the distance detection module 100. The first wall 146 has a light-transmitting area 142 and a light-blocking area 144, that is, the light-transmitting area 142 is disposed in a portion of the first wall 146. The light emitted by the light-emitting component 120 is emitted through the light-transmitting area 142 and / or enters the encapsulation component 140. That is, the light emitted by the light-emitting component 120 is transmitted to the target 500 through the light-transmitting area 142. After being reflected at the target 500, the light is transmitted to the photosensitive component 130 through the light-transmitting area 142, thereby enabling the distance detection module 100 to detect the distance between the target 500 and the distance detection module 100. The light-transmitting area 142 is a curved surface that protrudes from the non-light-transmitting area 144 in a direction away from the light-emitting component 120. This allows the light to converge after passing through the light-transmitting area 142, resulting in higher intensity light being transmitted to the target 500 and received by the photosensitive component 130, thus improving the detection accuracy of the distance detection module 100.

[0032] Specifically, there are two light-transmitting areas 142, which are respectively positioned opposite to the light-emitting component 120 and the photosensitive component 130. Both light-transmitting areas 142 are spherical structures protruding from the non-light-transmitting area 144, thereby forming a convex lens on the surface of the package to converge the light passing through the light-transmitting areas 142.

[0033] like Figure 2 and Figure 3 As shown, the light-transmitting area 142 is a convex-transmitting area. The main function of the convex-transmitting area is to focus light. The diameter of the convex-transmitting area is required to be smaller than the width or diameter of the infrared window 300 of the screen 200, so that the focused beam can pass through the infrared window 300 of the screen 200.

[0034] The height of the convex lens area must be less than the apex of the supporting component 110. Simultaneously, through optical lens design, the focal point of the convex lens area is controlled at the infrared window 300, ensuring that the light source is focused and emitted at this location. The focal point of the convex lens area can be adjusted by adjusting the curvature of the convex lens area.

[0035] Optionally, the first wall surface 146 may be a plane; the first wall surface 146 may also be a curved surface; the first wall surface 146 may also be partially a plane and partially a curved surface.

[0036] The second wall surface 148 can be a plane; the second wall surface 148 can also be a curved surface; the second wall surface 148 can also be partially a plane and partially a curved surface.

[0037] According to some embodiments of this application, such as Figure 1 , Figure 2 and Figure 3 As shown, the distance detection module 100 also includes a reflective layer 150, which is disposed in the non-transparent area 144 and the second wall surface 148.

[0038] In this embodiment, the distance detection module 100 further includes a reflective layer 150, which is disposed in the non-transparent area 144. A portion of the light emitted by the light-emitting component 120 is transmitted to the target 500 through the transparent area 142, and another portion of the light emitted by the light-emitting component 120 is transmitted to the non-transparent area 144. Since the non-transparent area 144 is provided with the reflective layer 150, the light emitted by the light-emitting component 120 is reflected by the reflective layer 150 after being transmitted to the non-transparent area 144. This portion of light is transmitted to the transparent area 142 after at least one reflection, and converges with the light directly transmitted to the transparent area 142, thereby enhancing the intensity of the light transmitted to the target 500 and improving the detection accuracy of the distance detection module 100.

[0039] After the light transmitted to the target 500 is reflected by the target 500, the light passes through the light-transmitting area 142 and is transmitted to the interior of the encapsulation component 140. Part of the light transmitted to the interior of the encapsulation component 140 is received by the photosensitive component 130, and the other part of the light is transmitted to the non-light-transmitting area 144. Since the non-light-transmitting area 144 is provided with a reflective layer 150, the light transmitted to the non-light-transmitting area 144 will be reflected by the light-emitting coating. After at least one reflection, this part of the light will be transmitted to the photosensitive component 130, thereby increasing the intensity of the light received by the photosensitive component 130 and improving the accuracy of the distance detection module 100 in detecting the target 500.

[0040] The distance detection module 100 provided in this application can be used in electronic devices, such as being installed at the earpiece of an electronic device. The distance detection module 100 detects whether the earpiece of the electronic device is near a human body. Even if the light propagation paths are not exactly the same, as long as the light intensity is increased, the electronic device can more accurately detect the presence of a human body nearby. The distance detection module 100 does not need to detect the precise distance between the human body and the electronic device; by detecting whether a human body is present around the electronic device, the operating status of the electronic device can be controlled.

[0041] Optionally, the reflective layer 150 may be a silver (Ag) plating.

[0042] Specifically, such as Figure 2 As shown, the light emitted by the light-emitting component travels along... Figure 2 The light emitted by the light-emitting component 120 is transmitted directly to the target 500 through the light-transmitting area 142, while the other part of the light is transmitted to the target 500 after being reflected by the reflective layer 150.

[0043] The light emitted by target 500 is transmitted to photosensitive component 130 after passing through light-transmitting area 142.

[0044] The light emitted by the light-emitting component 120 is concentrated in the center of the light-transmitting area 142, while light scattering occurs in other areas. To further improve the design, a reflective layer 150 is also coated in the non-light-transmitting area 144 above, which can effectively improve beam focusing and increase light intensity.

[0045] According to some embodiments of this application, such as Figure 1 , Figure 2 and Figure 3 As shown, the light-emitting component 120 is arranged at an angle relative to the first wall surface 146 and / or the second wall surface 148; and / or the photosensitive component 130 is arranged at an angle relative to the first wall surface 146 and / or the second wall surface 148.

[0046] In this embodiment, the light-emitting component 120 is arranged at an angle relative to the first wall surface 146 and / or the second wall surface 148, reducing the lateral space occupied by the light-emitting component 120 in the distance detection module 100. This allows the light-emitting component 120 to make fuller use of the space in the height direction of the distance detection module 100, thereby reducing the volume of the distance detection module 100. Similarly, the photosensitive component 130 is arranged at an angle relative to the first wall surface 146 and / or the second wall surface 148, which also reduces the lateral space occupied by the light-emitting component 120 in the distance detection module 100, allowing the light-emitting component 120 to make fuller use of the space in the height direction of the distance detection module 100, thereby reducing the volume of the distance detection module 100.

[0047] Specifically, such as Figure 4 As shown, a light-blocking cover is provided between the light-emitting component 120 and the photosensitive component 130, and a light-blocking cover is provided outside the light-emitting component 120 and the photosensitive component 130. The wall thickness of each light-blocking cover needs to be at least 0.5 mm to ensure a certain degree of firmness, so there is a space of about 1.5 mm for the wall thickness of the light-blocking cover. By directly potting with resin and removing the light-blocking cover, at least 1.5 mm of width can be saved in the x and y directions.

[0048] The light-emitting component 120 is encapsulated in resin. A certain distance must be maintained between the resin and the light-blocking cover to prevent the light-blocking cover from deforming and compressing the sensor. The resin is directly potted. After removing the light-blocking cover, this distance can be shortened, and the resin can be used directly for reinforcement.

[0049] Placing the two sensors at an angle can also save horizontal space.

[0050] The light-emitting component 120 and the photosensitive component 130 are arranged at an angle to save more planar space, while also using the angled irregularly shaped printed circuit board as a light-blocking plate to avoid light leakage.

[0051] The coating requires a rigid carrier. If the light-emitting component 120 and the photosensitive component 130 are simply arranged similarly without any protruding carrier in between, it is difficult to prevent the light emitted by the light-emitting component 120 from being directly emitted to the photosensitive component 130, which may lead to signal corruption.

[0052] Due to limited space in electronic devices, reducing the distance between two components and the thickness of three photomasks, and eliminating the space reserved between the light-blocking mask and the components, facilitates the spatial layout of other components inside the electronic device. It also allows for a smaller opening in the 200-degree infrared window on the screen, thus optimizing the device's appearance.

[0053] According to some embodiments of this application, such as Figure 1 and Figure 4 As shown, the distance detection module 100 also includes a light-shielding layer 160, which is disposed on the second wall surface 148 and located on both sides of the light-shielding portion 116.

[0054] In this embodiment, the distance detection module 100 further includes a light-shielding layer 160, which is disposed on the second wall surface 148 and located on both sides of the light-shielding portion 116. This reduces the probability that the light-emitting component 120 passes over the light-shielding portion 116 from both sides, further reducing the probability that the light emitted by the light-emitting component 120 is transmitted directly to the photosensitive component 130 without passing through the target 500. This reduces the impact of light scattering on the detection accuracy of the distance detection module 100 and improves the accuracy of the distance detection module 100 in detecting the position of the target 500.

[0055] Specifically, the light-shielding layer 160 is a black matte adhesive, such as epoxy resin, acrylic, polyurethane, etc.

[0056] According to some embodiments of this application, the side of the light-shielding portion 116 away from the non-transparent area 144 is the first side of the light-shielding portion 116; the side of the light-transmitting area 142 away from the non-transparent area 144 is the first side of the light-transmitting area 142; the first side of the light-shielding portion 116 is farther from the non-transparent area 144 than the first side of the light-transmitting area 142.

[0057] In this embodiment, the first side of the light-shielding part 116 is farther from the non-transparent area 144 than the first side of the light-transmitting area 142, that is, the height of the light-shielding part 116 is higher than the height of the light-transmitting area 142. This reduces the probability that light will be directly transmitted to the photosensitive component 130 after passing through the light-transmitting area 142, further reducing the interference to the photosensitive component 130 and improving the accuracy of the distance detection module 100 in detecting the position of the target 500.

[0058] Optionally, the top of the slope is a light-shielding part 116, the height of which must be higher than the reflective layer 150. The height of the light-shielding part 116 is required to block the light source path emitted by the light-emitting element. Therefore, the slope of the first mounting surface 112 and the second mounting surface 114 is mainly determined based on the minimum height that can block the emitted light path, which can be determined through simulation or actual testing.

[0059] When determining the height of the light-shielding part 116 through simulation, the slope of the first mounting surface 112 and the second mounting surface 114, as well as the height difference between the tip of the light-shielding part 116 and the light-transmitting area 142, are first simulated using simulation software. Using an optical path simulation diagram, the three-dimensional model of the distance detection module 100 is input, and the slope of the model, the lens focal length, and the distance between the vertex of the light-shielding part 116 and the vertex of the light-transmitting area 142 are adjusted. The effectiveness of blocking the emitted / incident light rays at the outermost edge of the photosensitive device is then observed.

[0060] Key parameters for simulation: The simulation requires defining the first distance from the screen 200 cover plate of the electronic device, which is already specified in the overall structure, to the detection module 100. Therefore, the focal length of the light-transmitting area 142 is set to be the same as the first distance. At this point, the height of the light-transmitting area 142 is confirmed. Since the light-transmitting area 142 is a lens, according to lens characteristics, the emitted light from the light-emitting element will not diverge to the photosensitive element. Therefore, the position and slope of the light-shielding part 116 can be adjusted to the minimum size of the light-shielding part 116, maximizing the slope.

[0061] Due to issues such as diffraction in actual light, the adjusted dimensions need to be tested again. The top height of the light-shielding part 116 will be designed to block the most diffracted light.

[0062] According to some embodiments of this application, there are multiple light-transmitting areas 142, and the multiple light-transmitting areas 142 are respectively opposite to the light-emitting component 120 and the photosensitive component 130.

[0063] In this embodiment, there are multiple light-transmitting areas 142, which are respectively opposite to the light-emitting component 120 and the photosensitive component 130. The light emitted by the light-emitting component 120 is emitted out and / or enters the encapsulation component 140 through the light-transmitting areas 142. That is, the light emitted by the light-emitting component 120 is transmitted to the target 500 through the light-transmitting areas 142. After the light is reflected at the target 500, it is transmitted to the photosensitive component 130 through the light-transmitting areas 142, thereby realizing the detection of the distance between the target 500 and the distance detection module 100 by the distance detection module 100.

[0064] Optionally, the light-transmitting area 142 includes a first light-transmitting area and a second light-transmitting area, the first light-transmitting area being opposite to the light-emitting component 120 and the second light-transmitting area being opposite to the photosensitive component 130.

[0065] According to some embodiments of this application, such as Figure 1 As shown, the distance detection module 100 also includes a flexible circuit board 170, which is disposed on the first mounting surface 112 and the second mounting surface 114. The light-emitting component 120 and the photosensitive component 130 are both electrically connected to the flexible circuit board 170.

[0066] In this embodiment, the flexible circuit board 170 is disposed on the first mounting surface 112 and the second mounting surface 114. The light-emitting component 120 and the photosensitive component 130 are both electrically connected to the flexible circuit board 170, which reduces the difficulty of the assembly process of the photosensitive component 130 and the light-emitting component 120, improves the assembly efficiency of the photosensitive component 130 and the light-emitting component 120, and improves the accuracy of the installation position of the photosensitive component 130 and the light-emitting component 120, thereby improving the detection accuracy of the distance detection module 100.

[0067] According to some embodiments of this application, such as Figure 5 As shown, the support component 110 is a circuit board, and the light-emitting component 120 and the photosensitive component 130 are both electrically connected to the circuit board.

[0068] In this embodiment, the support component 110 is a circuit board, and the light-emitting component 120 and the photosensitive component 130 are both electrically connected to the circuit board, which simplifies the structure of the distance detection module 100 and reduces the cost of the distance detection module 100.

[0069] Specifically, the support component 110 is a circuit board (PCB), and the photosensitive component 130 and the light-emitting component 120 can be electrically connected to the circuit board. The circuit board can be an irregular structure, such as a triangular structure. The photosensitive component 130 and the light-emitting component 120 are soldered to two inclined mounting surfaces of the circuit board, thereby making the structure of the distance detection module 100 simpler.

[0070] The photosensitive element 130 and the light-emitting element 120 can also be electrically connected via a flexible printed circuit board 170 (FPC). During the assembly of the photosensitive element 130 and the light-emitting element 120, such as... Figure 6 As shown, the photosensitive component 130 and the light-emitting component 120 are first soldered onto the flexible circuit board 170. During soldering, the flexible circuit board 170 can be placed in a flat position, thus making the soldering of the photosensitive component 130 and the light-emitting component 120 easier and more accurate. Figure 7 and Figure 8 As shown, after the photosensitive component 130 and the light-emitting component 120 are welded together, the flexible circuit board 170 is bent into a curved surface. The flexible circuit board 170 can be attached to the first mounting surface 112 and the second mounting surface 114 of the support component 110 using double-sided adhesive 700. The signal transmission ends at both ends of the flexible circuit board 170 are interconnected with the circuitry of the printed circuit board through conductive adhesive 600 (or the conductive points at both ends of the flexible circuit board 170 can be directly soldered to the solder points of the printed circuit board). Figure 1 As shown, transparent resin is then poured and cured using a mold to form the outer frame shape. Finally, a reflective layer 150 and a light-shielding layer 160 are plated onto the side walls.

[0071] The flexible circuit board 170 is soldered to a conductive via 118 on the circuit board, and a solder ball 180 is provided at the end of the conductive via 118 away from the flexible circuit board 170.

[0072] An electronic device according to some embodiments of this application includes a distance detection module 100 as described in any of the above embodiments.

[0073] Since the electronic device includes the distance detection module 100 as described in any of the above embodiments, the electronic device possesses all the beneficial effects of the distance detection module 100 as described in any of the above embodiments.

[0074] Alternatively, the electronic device includes a mobile phone, tablet, smart wearable device, e-reader, or laptop.

[0075] Optionally, the distance detection module 100 is located at the earpiece position of the electronic device. It detects the distance by comparing the duration of light beam reception, such as the screen turning on when the user moves away from the electronic device and turning off when the electronic device is close to the ear. The distance detection module 100 can be tested and debugged in advance, such as by directly testing the difference in the time it takes to receive reflected light when an object approaches, and then recording the range of the time difference into the system.

[0076] Optionally, taking a mobile phone as an electronic device and an infrared sensor as the distance detection module 100 as an example, the mobile phone's infrared sensor does not test specific distance data; it is mainly used to sense the distance of objects. When detecting the distance of the target 500 through the infrared sensor, it calculates the cumulative signal received over a period of time (the photosensitive component 130 generally requires a certain light intensity signal to activate), thus taking the average distance value to reduce errors. On the other hand, the height of the infrared sensor does not exceed 5mm, while the distance between the target 500 and the phone changes much more than 5mm before and after answering a call. Therefore, even if the light-emitting component 120 and the photosensitive component 130 are tilted, it will not affect the detection function of the infrared sensor.

[0077] like Figure 3 As shown, the special properties of a lens allow for the parallel emission of light rays beyond the focal length (such as...). Figure 3 (as indicated by the middle arrow D) and parallel emitted rays (such as...) Figure 3 (As indicated by the middle arrow E) When incident, it will focus at the focal length of the lens, i.e., the position of the infrared window 300. Meanwhile, the non-parallel emitted light from the sidewalls (such as...) Figure 3 (As indicated by arrow C) the light will also be emitted parallel through refraction by the lens. Therefore, the size and width of the infrared aperture only need to be set to be greater than or equal to the position of the parallel light emitted from the sidewall. It is only necessary to control the light at the 30° position of the infrared window; there is no need to consider whether it is parallel or non-parallel.

[0078] Non-parallel incident light rays reflected by target 500 (such as...) Figure 3 (as indicated by the middle arrow F) and parallel incident rays beyond the focal length (such as...) Figure 3 (as indicated by the middle arrow G) and parallel incident rays (such as...) Figure 3 (As indicated by the middle arrow H) After being refracted by the lens, it will be transmitted to the photosensitive element 130.

[0079] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0080] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A distance detection module, characterized in that, include: A support component has a triangular longitudinal cross-section and is provided with a first mounting surface, a second mounting surface, and a bottom surface. A light-shielding portion is provided between the first mounting surface and the second mounting surface, and the light-shielding portion is located on the side of the support component away from the bottom surface. A light-emitting component, disposed on the first mounting surface, is used to emit light; A photosensitive element, disposed on the second mounting surface, is used to receive light; An encapsulation component is encapsulated on the outside of the photosensitive component and the light-emitting component, and the light-shielding portion protrudes from the encapsulation component.

2. The distance detection module according to claim 1, characterized in that, The encapsulation component has a first wall and a second wall, the second wall being arranged around the first wall; The first wall surface has a light-transmitting area and a non-light-transmitting area. The light-transmitting area is a curved surface that protrudes from the non-light-transmitting area in a direction away from the light-emitting component. The light emitted by the light-emitting component is emitted through the light-transmitting area and / or enters the encapsulation component.

3. The distance detection module according to claim 2, characterized in that, Also includes: A reflective layer is disposed in the non-transparent area and the second wall surface.

4. The distance detection module according to claim 2, characterized in that, The light-emitting component is arranged at an angle relative to the first wall surface and / or the second wall surface; and / or The photosensitive element is arranged at an angle relative to the first wall surface and / or the second wall surface.

5. The distance detection module according to claim 2, characterized in that, Also includes: A light-shielding layer is disposed on the second wall surface and located on both sides of the light-shielding portion.

6. The distance detection module according to claim 2, characterized in that, The side of the light-shielding part that is away from the non-transparent area is the first side of the light-shielding part; The side of the light-transmitting area that is furthest from the non-light-transmitting area is the first side of the light-transmitting area; The first side of the light-blocking portion is farther away from the non-light-transparent area relative to the first side of the light-transmitting area.

7. The distance detection module according to claim 2, characterized in that, The number of light-transmitting areas is multiple, and each of the multiple light-transmitting areas is opposite to the light-emitting component and the photosensitive component.

8. The distance detection module according to any one of claims 1 to 7, characterized in that, Also includes: A flexible circuit board is disposed on the first mounting surface and the second mounting surface, and the light-emitting component and the photosensitive component are both electrically connected to the flexible circuit board.

9. The distance detection module according to any one of claims 1 to 7, characterized in that, The supporting component is a circuit board, and both the light-emitting component and the photosensitive component are electrically connected to the circuit board.

10. An electronic device, characterized in that, Includes the distance detection module as described in any one of claims 1 to 9.

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