Electronic device

Abstract

The invention discloses an electronic device, and belongs to the technical field of communication, and the electronic device comprises a display screen and a light supplement lamp. The display screen is provided with a light-transmitting area; the light supplementing lamp is located on the side, away from the display face of the display screen, of the display screen and comprises a light emitting source and a light guide part, the light guide part comprises a light inlet part and a light outlet part which are connected, the light outlet part obliquely extends in the plane parallel to the display face of the display screen relative to the light inlet part, and the light inlet part is provided with a light inlet face and a first reflection face which are arranged oppositely. The light-emitting light source is opposite to the light-in surface, the light-out part is provided with a light-out surface and a second reflecting surface which are oppositely arranged, the light-out surface and the second reflecting surface are both located at the end, away from the light-in part, of the light-out part, and the light-out surface is opposite to the light-transmitting area; light emitted by the light-emitting light source passes through the light-in surface, the first reflecting surface, the second reflecting surface and the light-out surface and then is emitted out of the light-transmitting area.

Description

Technical Field

[0001] This application belongs to the field of communication technologies, and particularly relates to an electronic device. Background Art

[0002] With the continuous improvement of the imaging functions of electronic devices such as mobile phones, the demand for taking pictures with electronic devices is also increasing, and various shooting scenarios emerge in an endless stream. For scenarios such as low-light environments and night shooting, it is difficult to take clear photos, and it is also difficult to have a good experience in video recording or live broadcast scenarios. Therefore, a fill light is provided on the electronic device, and the fill light can perform a fill light operation on shooting.

[0003] In related technologies, the fill light is located inside the device body of the electronic device. A light-transmitting area is provided on the device body of the electronic device. The fill light includes a light guide member and a light-emitting light source. The light guide member has an incident light surface and an emergent light surface arranged opposite to each other. The emergent light surface is arranged opposite to the light-transmitting area, and the incident light surface is arranged opposite to the light-emitting light source. The light emitted by the light-emitting light source enters the light guide member through the incident light surface, then exits the light guide member through the emergent light surface, and finally exits the electronic device through the light-transmitting area to achieve the fill light operation. In related technologies, in order to enable the light to exit from the light-transmitting area, both the light guide member and the light-emitting light source need to be arranged at the position directly below the light-transmitting area.

[0004] However, since both the light guide member and the light-emitting light source are located at the position directly below the light-transmitting area, the thickness of the fill light is accumulated at the position corresponding to the light-transmitting area. Therefore, the thickness at the position of the light-transmitting area on the electronic device needs to be increased, resulting in a larger thickness of the entire electronic device. Summary of the Invention

[0005] The purpose of the embodiments of this application is to provide an electronic device, which can solve the technical problem of the relatively large thickness of the electronic device.

[0006] To solve the above technical problem, this application is implemented as follows: This application discloses an electronic device, including: A display screen, which is provided with a light-transmitting area; A fill light, which is located on a side of the display screen away from its display surface. The fill light includes a light-emitting light source and a light guide member. The light guide member includes an incident light portion and an emergent light portion connected to each other. The emergent light portion extends obliquely in a plane parallel to the display surface of the display screen with respect to the incident light portion. The incident light portion has an incident light surface and a first reflection surface arranged opposite to each other. The light-emitting light source is arranged opposite to the incident light surface. The emergent light portion has an emergent light surface and a second reflection surface arranged opposite to each other. Both the emergent light surface and the second reflection surface are located at an end of the emergent light portion away from the incident light portion. The emergent light surface is arranged opposite to the light-transmitting area; Among them, the light emitted by the light-emitting light source exits from the light-transmitting area after passing through the light-incident surface, the first reflecting surface, the second reflecting surface, and the light-emitting surface.

[0007] In the embodiment of the present application, the light-emitting part extends obliquely relative to the light-incident part in a plane parallel to the display surface of the display screen. At this time, the light-emitting part is bent at a certain angle relative to the light-incident part in a plane parallel to the display surface of the display screen, so that the light-incident part and the light-transmitting area are misaligned. Since the light-incident surface is arranged on the light-incident part, the light-emitting light source and the light-transmitting area are misaligned. In this solution, the light-emitting part and the light-incident part are bent at a certain angle in a plane parallel to the display surface of the display screen, so that the light-incident part and the light-transmitting area are misaligned, and then the light-emitting light source and the light-transmitting area are misaligned, thus avoiding the problem of accumulation of the light guide member and the light-emitting light source directly below the light-transmitting area. Therefore, it is beneficial to reduce the thickness at the position of the light-transmitting area on the electronic device, and the thickness of the electronic device is smaller. Description of the Drawings

[0008] Figure 1 and Figure 2 is a schematic structural diagram of an electronic device disclosed in an embodiment of the present application; Figure 3 is a cross-sectional view of an electronic device disclosed in an embodiment of the present application; Figure 4 is a schematic structural diagram of a fill light of an electronic device disclosed in an embodiment of the present application; Figures 5 to 11 is a schematic structural diagram of a light guide member of a fill light of an electronic device disclosed in an embodiment of the present application; Figure 12 is a partial enlarged view of the second reflecting surface of the light guide member of an electronic device disclosed in an embodiment of the present application; Figure 13 is a schematic structural diagram of a circuit board bracket of an electronic device disclosed in an embodiment of the present application.

[0009] Description of the Reference Numerals: 100 - Fill light, 101 - First fill light, 102 - Second fill light, 110 - Light emitting source, 120 - Light guide member, 1201 - Intersecting line, 1202 - First straight line, 1203 - First curve, 121 - Light incident part, 12101 - Third side, 12102 - Fourth side, 121a - Protrusion part, 1211 - Light incident surface, 1211a - First light incident structure, 1211b - Second light incident structure, 1212 - First reflection surface, 1212a - First edge line, 1212b - Second edge line, 1213 - Groove, 1213a - First side surface, 1213b - Second side surface, 1213c - Third side surface, 1213d - Bottom surface, 122 - Light exit part, 122a - First side, 122b - Second side, 1221 - Light exit surface, 1221a - First long side, 1222 - Second reflection surface, 1222a - Tooth-shaped structure, 200 - Display screen, 201 - Translucent area, 201a - First translucent area, 201b - Second translucent area, 300 - Circuit board bracket, 301 - Accommodating hole, W - Central optical axis. Detailed implementation manners

[0010] The technical solutions in the embodiments of the present application will be clearly described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0011] The terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such terms may be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order different from those illustrated or described herein. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally indicates an "or" relationship between the associated objects before and after.

[0012] The electronic device provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings through specific embodiments and their application scenarios.

[0013] Please refer to Figures 1 to 13 , the embodiments of the present application disclose an electronic device, and the disclosed electronic device includes a display screen 200 and a fill light 100.

[0014] The display screen 200 is used to display information such as text, pictures, and videos to implement the display function of the electronic device. The display screen 200 has a display surface, which refers to the surface where users can see the information such as text, pictures, and videos displayed on the display screen 200. The display surface of the display screen 200 is exposed. Here, the display surface can also be understood as the surface on the side of the display screen 200 that is away from the back cover or the battery cover of the electronic device. The display screen 200 is provided with a light-transmitting area 201, and at this time, light can pass through the light-transmitting area 201 and pass through the display screen 200. Here, the light-transmitting area 201 can be a through-hole structure, and of course, it can also be a solid area that can transmit light. The specific structure of the light-transmitting area 201 is not limited herein. Optionally, the display screen 200 can be a display device such as an LED (Light-Emitting Diode) display screen, a liquid crystal display screen, and an OLED (Organic Light-Emitting Diode) display screen. The specific type of the display screen 200 is not limited in this article. In addition, the composition structure and principle of the display screen 200 are well-known technologies and will not be elaborated in this article.

[0015] The fill light 100 can perform a fill light operation when the electronic device takes a photo. The fill light 100 is located on the side of the display screen 200 away from its display surface. The fill light 100 includes a light-emitting light source 110 and a light guide member 120. The light emitted by the light-emitting light source 110 passes through the light guide member 120 and then is emitted from the above-mentioned light-transmitting area 201. Optionally, the light-emitting light source 110 can be an LED (Light Emitting Diode, semiconductor light-emitting diode) lamp, a high-pressure sodium lamp, a metal halide lamp, etc. Of course, the light-emitting light source 110 can also have other structures, which are not limited in this article. In addition, since the light guide member 120 is used to transmit light, the light guide member 120 can be made of transparent materials such as glass and resin. The light emitted by the fill light 100 in this application is emitted out of the electronic device in the direction of the display surface of the display screen 200. That is to say, the fill light 100 in this application is a front fill light, and this fill light 100 is used to perform a fill light operation when the front camera module of the electronic device takes a photo.

[0016] Specifically, the light guide member 120 includes a light incident portion 121 and a light exit portion 122 connected to each other. The light exit portion 122 extends obliquely relative to the light incident portion 121 in a plane parallel to the display surface of the display screen 200. The plane parallel to the display surface here can be understood as the orthographic projection plane parallel to the display surface, and the orthographic projection direction is the direction perpendicular to the display surface, which can also be understood as the axial direction of the light transmissive area 201. In this application, the fact that the light exit portion 122 extends obliquely relative to the light incident portion 121 can be understood as that in the plane parallel to the display surface of the display screen 200, the angle between the light exit portion 122 and the light incident portion 121 is not equal to 90° or not equal to 180°. Here, not equal to 90° or not equal to 180° is in comparison with the angle between different sides.

[0017] For example, as Figure 9 shown, the light exit portion 122 has a first side 122a and a second side 122b arranged back to back, and both the first side 122a and the second side 122b are connected to the light incident portion 121. The side of the light exit portion 122 facing the light incident portion 121 is connected to the light incident portion 121, that is, the side of the light exit portion 122 facing the light incident portion 121 is the intersection line 1201 between the light exit portion 122 and the light incident portion 121. Here, the intersection line 1201 can also be understood as the side of the light incident portion 121 facing the light exit portion 122. In this application, the fact that the light exit portion 122 extends obliquely relative to the light incident portion 121 in a plane parallel to the display surface of the display screen 200 can be understood as that the angles between the first side 122a and the second side 122b and the intersection line 1201 are both greater than 0° and less than 90°; or the angles between the first side 122a and the second side 122b and the intersection line 1201 are greater than 90° and less than 180°. As Figure 9 shown, the angles formed by the first side 122a and the second side 122b with the intersection line 1201 facing the left are acute angles, while the angles formed by the first side 122a and the second side 122b with the intersection line 1201 facing the right are obtuse angles. At this time, the angle facing the left and the angle facing the right are supplementary angles to each other.

[0018] Of course, the inclination angle between the light-emitting portion 122 and the light-incident portion 121 is not limited to being represented by the angles between the first side 122a and the second side 122b and the intersection line 1201. It can also be represented by the angles between the side adjacent to the intersection line 1201 on the light-incident portion 121 and the first side 122a and the second side 122b. For example, on the side of the light-incident portion 121 facing the first side 122a, there is a third side 12101 adjacent to the intersection line 1201, and the angle between the third side 12101 and the first side 122a can be an obtuse angle, that is to say, the third side 12101 and the first side 122a have a certain angle and are not parallel. Similarly, on the side of the light-incident portion 121 facing the second side 122b, there is a fourth side 12102 adjacent to the intersection line 1201, and the fourth side 12102 is not parallel to the second side 122b either.

[0019] The light-incident portion 121 has a light-incident surface 1211 and a first reflection surface 1212 arranged opposite to each other, and the light-emitting light source 110 is arranged opposite to the light-incident surface 1211. The light-emitting portion 122 has a light-emitting surface 1221 and a second reflection surface 1222 arranged opposite to each other. Both the light-emitting surface 1221 and the second reflection surface 1222 are located at one end of the light-emitting portion 122 facing away from the light-incident portion 121, and the light-emitting surface 1221 is arranged opposite to the light-transmitting region 201. Optionally, the second reflection surface 1222 can be on the same side of the light guide member 120 as the light-incident surface 1211; or, the second reflection surface 1222 can be on the same side of the light guide member 120 as the first reflection surface 1212.

[0020] In the specific light supplementing process, the light emitted by the light-emitting light source 110 enters the light-incident portion 121 through the light-incident surface 1211, then is reflected by the first reflection surface 1212 to the light-emitting portion 122, and then is reflected by the second reflection surface 1222 to the light-emitting surface 1221, and is emitted from the light-emitting surface 1221 out of the light-emitting portion 122. After being emitted from the light-emitting portion 122, since the light-emitting surface 1221 is arranged opposite to the light-transmitting region 201, the light can be emitted from the light-transmitting region 201 out of the electronic device.

[0021] In the embodiments disclosed in this application, the light-emitting portion 122 extends obliquely relative to the light-incident portion 121 in a plane parallel to the display surface of the display screen 200. At this time, the light-emitting portion 122 is bent at a certain angle relative to the light-incident portion 121 in a plane parallel to the display surface of the display screen 200. Therefore, the light-incident surface 1211 and the light-emitting surface 1221 are arranged in an interleaved manner, so that the light-emitting light source 110 is arranged on the left or right side deviated from the light-transmitting region 201. Therefore, the light-emitting light source 110 is arranged in a dislocation with the light-transmitting region 201, thus avoiding the problem of the light guide member 120 and the light-emitting light source 110 accumulating directly below the light-transmitting region 201. Therefore, it is beneficial to reduce the thickness at the position of the light-transmitting region 201 on the electronic device, and the thickness of the electronic device is smaller.

[0022] In addition, the light-emitting portion 122 in the present application extends obliquely in a plane parallel to the display surface of the display screen 200 relative to the light-incident portion 121. As a result, the light-emitting portion 122 and the light-incident portion 121 are arranged obliquely in the same plane, thus avoiding the superposition of the length and width of the light guide member 120 in the same direction, which is beneficial to reducing the space occupied by the light guide member 120 in the length or width direction of the electronic device.

[0023] For example, the arrangement direction of the light-emitting portion 122 and the light-incident portion 121 can be the length direction of the light guide member 120. At this time, when the light-emitting portion 122 extends perpendicularly in a plane parallel to the display surface of the display screen 200 relative to the light-incident portion 121, the sizes of the light-emitting portion 122 and the light-incident portion 121 are superimposed in the length direction of the light guide member 120, so that the length of the light guide member 120 is relatively large, resulting in the light guide member 120 occupying a large longitudinal space of the electronic device. The longitudinal space here can be the space in the length direction or the width direction of the electronic device.

[0024] In the electronic device disclosed in the present application, the light-emitting portion 122 extends obliquely in a plane parallel to the display surface of the display screen 200 relative to the light-incident portion 121. At this time, the light-emitting portion 122 is obliquely arranged, so that the size of the light-emitting portion 122 along the length direction of the light guide member 120 is reduced, which is beneficial to reducing the length of the light guide member 120, and further making the light guide member 120 occupy a smaller longitudinal space of the electronic device.

[0025] In addition, through the precise light distribution of the first reflecting surface 1212 and the second reflecting surface 1222 of the light guide member 120 in the present application, the light utilization rate can be improved, thereby improving the supplementary illumination intensity of the supplementary light 100.

[0026] In an alternative solution, in the direction of the optical axis of the light-emitting light source 110, the orthographic projection profile of the light-emitting portion 122 can be a parallelogram structure, and the orthographic projection profile of the light-incident portion 121 can be a rectangular structure. Of course, the light-emitting portion 122 and the light-incident portion 121 are not limited to the shapes disclosed in this article and can also be other shapes, which are not limited herein.

[0027] In the above-mentioned embodiment, since the centers of the light-emitting light source 110 and the light-transmitting region 201 are staggered, there is a significant eccentricity between the centers of the light-emitting light source 110 and the light-transmitting region 201. As a result, when the supplementary light 100 is lit, the brightness distribution on the light-transmitting region 201 is inconsistent, so that the light-emitting uniformity of the supplementary light 100 is poor.

[0028] Based on this, in another alternative embodiment, the direction of the first reflecting surface 1212 facing the second reflecting surface 1222 is the same as the direction in which the light-emitting part 122 extends obliquely relative to the light-incident part 121 in a plane parallel to the display surface of the display screen 200. In this solution, the first reflecting surface 1212 is rotated by a certain angle relative to the light-incident part 121 so that the first reflecting surface 1212 faces the second reflecting surface 1222 directly. Therefore, the optical path of the emitted light from the light-emitting light source 110 is rotated, so that the light reflected by the first reflecting surface 1212 can cover the second reflecting surface 1222, so that the intensities of the light rays in each part of the second reflecting surface 1222 are similar. Therefore, the brightness distribution on the light-transmitting area 201 is relatively uniform, which is beneficial to improving the light-emitting uniformity of the supplementary light 100.

[0029] In the above embodiment, the first reflecting surface 1212 can be a cylindrical surface. According to the definition of a cylindrical surface, a cylindrical surface is a curved surface formed by a moving line moving parallel to a fixed curve. The moving line is called the straight generatrix of the cylindrical surface, and the fixed curve is called the directrix of the cylindrical surface. In this application, as Figure 9 shown, the light-incident part 121 has a first straight line 1202 in a plane parallel to the display surface of the display screen 200, and the light-incident part 121 has a first curve 1203 in one of the planes perpendicular to the display surface of the display screen 200. The first reflecting surface 1212 is formed by translating the first straight line 1202 along the first curve 1203. Here, the first straight line 1202 is the straight generatrix of the cylindrical surface, and the first curve 1203 is the directrix of the cylindrical surface. The above-mentioned first reflecting surface 1212 is rotated by a certain angle relative to the light-incident part 121, which can be understood as the position of the straight generatrix relative to the light-incident part 121 is rotated by a certain angle.

[0030] For example, taking the above-mentioned intersection line 1201 as a reference, the angle between the straight generatrix and the intersection line 1201 is the rotation angle of the first reflecting surface 1212. Here, the rotation angle is relative to the situation when the straight generatrix is parallel to the intersection line 1201. The angle between the straight generatrix and the intersection line 1201 here can be 20°, and of course it can also be other angles, which are not limited in this article.

[0031] In another alternative solution, at least one of the above-mentioned first side 122a and the second side 122b can form a first included angle with the intersection line 1201. The straight generatrix of the cylindrical surface and the intersection line 1201 can form a second included angle. Among them, the first included angle is equal to the second included angle. Or the first included angle and the second included angle are supplementary to each other. Here, it can be understood that the inclination angle of the light-emitting part 122 relative to the light-incident part 121 is the same as the rotation angle of the first reflecting surface 1212 relative to the light-incident part 121. Therefore, the position of the first reflecting surface 1212 relative to the light-incident part 121 is related to the position of the light-emitting part 122 relative to the light-incident part 121.

[0032] This solution enables the light reflected by the first reflecting surface 1212 to cover the second reflecting surface 1222 as much as possible, which is beneficial to further improving the uniformity of the brightness distribution on the light-transmitting area 201, and thus beneficial to further improving the light-emitting uniformity of the supplementary light 100. Therefore, it can better solve the problem of eccentricity between the center of the light-emitting source 110 and the center of the light-transmitting area 201.

[0033] As Figure 9 shown, if both the first included angle and the second included angle are determined as acute angles, then the first included angle and the second included angle are the same. If one of the first included angle and the second included angle is determined as an acute angle and the other is determined as an obtuse angle, then the first included angle and the second included angle are supplementary angles.

[0034] In the above solution, the first reflecting surface 1212 is not limited to a cylindrical surface, and can also be an arc surface. For example, the light-incident part 121 has a second curve, and the second curve rotates a certain angle or rotates one week along the central optical axis W of the light-emitting source 110 to form the first reflecting surface 1212.

[0035] In another alternative embodiment, a groove 1213 is formed on the surface of the light-incident part 121 on the side facing away from the light-emitting source 110, and the inner side surface of the groove 1213 can form the first reflecting surface 1212. This solution is beneficial to reducing the overall thickness of the light guide member 120, and further beneficial to reducing the thickness of the electronic device, thereby being beneficial to improving the thinness and lightness of the electronic device.

[0036] The present application discloses a specific structure of the groove 1213. Of course, the groove 1213 can also have other structures, which are not limited herein. Specifically, as Figure 7 and Figure 8 shown, the groove 1213 can include a bottom surface 1213d, a first side surface 1213a, a second side surface 1213b, a third side surface 1213c and the above-mentioned first reflecting surface 1212. The first side surface 1213a, the second side surface 1213b and the third side surface 1213c can all be planes, the first reflecting surface 1212 can be a cylindrical surface, the first side surface 1213a, the second side surface 1213b, the third side surface 1213c and the first reflecting surface 1212 can be connected end to end along the circumferential direction of the bottom surface 1213d, the first reflecting surface 1212 can be disposed opposite to the second side surface 1213b, and the first side surface 1213a can be disposed opposite to the third side surface 1213c. At this time, the projection contour of the groove 1213 is a quadrilateral structure. The groove 1213 with such a structure is convenient for processing, and thus beneficial to reducing the manufacturing difficulty of the light guide member 120.

[0037] In the above embodiments, one side of the first reflecting surface 1212 facing the bottom surface 1213d of the groove 1213 may have a first edge line 1212a, and the side of the first reflecting surface 1212 facing away from the bottom surface 1213d of the groove 1213 has a second edge line 1212b. The first edge line 1212a and the second edge line 1212b here can be understood as the above-mentioned first straight line 1202. And the edge line of the first reflecting surface 1212 facing the first side surface 1213a of the groove 1213 or the edge line facing the third side surface 1213c can be understood as the above-mentioned first curve 1203.

[0038] In a specific solution, the surface type parameters of the first reflecting surface 1212 are shown in Table 1 below: Table 1

[0039] The surface type parameters in Table 1 above can determine the surface type of the first reflecting surface 1212. The minimum curvature, maximum curvature, and curve length in Table 1 are for obtaining the linearity of the first curve 1203, and the parameters of the first straight line 1202 can be flexibly selected according to the specific setting position, which is not limited in this article. The angle between the adjacent surfaces mentioned above refers to the angle between the first reflecting surface 1212 and the first side surface 1213a and the third side surface 1213c mentioned above. Of course, the surface type parameters of the first reflecting surface 1212 are not limited to the data in Table 1, and the above data parameters can fluctuate between plus or minus 10%.

[0040] In order to further improve the light utilization rate, in another embodiment, the central optical axis W of the light-emitting light source 110 may be located between the first edge line 1212a and the second edge line 1212b, and the distance between the central optical axis W of the light-emitting light source 110 and the first edge line 1212a is less than the distance between the central optical axis W of the light-emitting light source 110 and the second edge line 1212b, as Figure 9 shown.

[0041] Here, it can be understood that in the projection direction along the optical axis of the light-emitting light source 110, the projection of the central optical axis W of the light-emitting light source 110 can be located between the projections of the first edge line 1212a and the second edge line 1212b, and the projection of the second edge line 1212b is closer to the projection of the central optical axis W of the light-emitting light source 110.

[0042] This solution can enable the first reflecting surface 1212 to cover a larger area of the light-emitting light source 110. Therefore, it can further improve the light utilization rate of the light-emitting light source 110, and thus is beneficial to improving the supplementary light brightness of the supplementary light 100.

[0043] In another alternative embodiment, as Figure 9As shown, the light-emitting surface 1221 can be a strip-shaped surface. The side of the light-emitting surface 1221 facing the light-incident part 121 is the first long side 1221a. The first end of the first long side 1221a faces the first side 122a, and the second end of the first long side 1221a faces the second side 122b. Among them, the distance between the first end of the first long side 1221a and the central optical axis W of the light-emitting light source 110 is less than the distance between the second end of the first long side 1221a and the central optical axis W of the light-emitting light source 110. The distance between the first end of the first long side 1221a and the central optical axis W of the light-emitting light source 110 is as shown in Figure 9 b1 in, and the distance between the second end of the first long side 1221a and the central optical axis W of the light-emitting light source 110 is as shown in Figure 9 b2 in.

[0044] At this time, the second end of the first long side 1221a is farther from the light-emitting light source 110 than its first end. Therefore, the direction from the first end to the second end of the first long side 1221a can be understood as the direction of the inclined extension of the light-emitting part 122 relative to the light-incident part 121.

[0045] In this solution, the extension direction of the light-emitting surface 1221 faces the direction of the inclined extension of the light-emitting part 122 relative to the light-incident part 121. Therefore, the misalignment angle between the light-emitting surface 1221 and the light-emitting light source 110 can be further increased, thereby further increasing the distance between the light-emitting light source 110 and the light-transmitting area 201, which is beneficial to further reducing the thickness of the electronic device.

[0046] In another alternative embodiment, in the direction from the first side 122a to the second side 122b, the distance between the light-emitting surface 1221 and the second reflecting surface 1222 gradually decreases. At this time, the part of the light-emitting part 122 provided with the light-emitting surface 1221 and the second reflecting surface 1222 is a wedge-shaped structure. Therefore, the light-emitting surface 1221 and the second reflecting surface 1222 can form an acute angle. In this solution, the second reflecting surface 1222 is an inclined wedge-shaped surface, so that the second reflecting surface 1222 can be covered by the light reflected by the first reflecting surface 1212 as much as possible, so that the light can be more evenly incident on the second reflecting surface 1222, thereby further improving the light-emitting uniformity of the supplementary light 100.

[0047] Furthermore, the second reflecting surface 1222 can include a plurality of tooth-shaped structures 1222a, and the plurality of tooth-shaped structures 1222a can be continuously arranged in the direction from the first side 122a to the second side 122b. At this time, the groove walls of each tooth-shaped structure 1222a can reflect light. Therefore, by optimizing the angle of the groove walls, the reflection angle of the light can be accurately controlled, thereby improving the light guiding performance of the second reflecting surface 1222.

[0048] In this solution, multiple tooth-shaped structures 1222a can achieve precise light guiding of light rays, thereby further improving the optical performance of the fill light 100.

[0049] In addition, the shape structure of the tooth-shaped structure 1222a is simple, and multiple tooth-shaped structures 1222a are processed in the same plane. Therefore, compared with the solution where the first reflecting surface 1212 is an arc-shaped structure, the processing difficulty of the second reflecting surface 1222 in this solution is smaller. In addition, compared with the second reflecting surface 1222 with a flat structure, the second reflecting surface 1222 in this solution has a better light guiding effect.

[0050] Furthermore, multiple tooth-shaped structures 1222a can be concentrically arranged annular teeth. In the direction from the first side 122a to the second side 122b, the distance between two adjacent tooth-shaped structures 1222a gradually decreases. In this solution, in the direction from the first side 122a to the second side 122b, the farther away from the light-emitting light source 110, the smaller the distance between two adjacent tooth-shaped structures 1222a. Therefore, the light control performance is higher. Therefore, by arranging the tooth pitch of the tooth-shaped structure 1222a from sparse to dense, the light output uniformity of the fill light 100 can be further improved.

[0051] Of course, multiple tooth-shaped structures 1222a are not limited to annular teeth and can be strip-shaped straight tooth structures. The specific shape of the tooth-shaped structure 1222a is not limited in this article.

[0052] In another alternative solution, the light incident surface 1211 can include a first light incident structure 1211a and a second light incident structure 1211b, and both the first light incident structure 1211a and the second light incident structure 1211b are rotationally symmetric about the central optical axis W of the light-emitting light source 110. The first light incident structure 1211a can be an arc-shaped convex surface. The second light incident structure 1211b can include multiple arc-shaped teeth. The second light incident structure 1211b can be arranged around the first light incident structure 1211a, and multiple arc-shaped teeth can be continuously arranged in the direction away from the first light incident structure 1211a. The continuous arrangement of multiple arc-shaped teeth in the direction away from the first light incident structure 1211a refers to the direction from the center of the light incident surface 1211 to its edge.

[0053] Specifically, the first light incident structure 1211a is an arc-shaped convex surface, and the arc-shaped convex surface protrudes toward the side of the light-emitting light source 110. At this time, the first-angle light rays of the light-emitting light source 110 are incident on the first reflecting surface 1212 after passing through the first light incident structure 1211a. The arc-shaped convex surface has a relatively precise light ray divergence angle contraction effect on small-angle divergent light rays. Therefore, by setting the first light incident structure 1211a as an arc-shaped convex surface, the small-angle light rays can be better contracted.

[0054] When the divergence angle of the light rays of the light-emitting light source 110 is further expanded, the control accuracy of the arc-shaped convex surface will deteriorate, so it is difficult to contract or diffuse the light rays. At this time, the second-angle light rays of the light-emitting light source 110 are incident on the first reflecting surface 1212 after passing through the second light-incident structure 1211b. Since each arc-shaped tooth has two opposite side walls, first, the light rays are incident through one of the side walls, and this side wall can achieve the refraction of the incident light rays. The refracted light rays can be reflected by the other side wall. Therefore, through one refraction and one reflection, the function of better diverging or contracting the light rays can be achieved, thereby further improving the control accuracy of the light rays.

[0055] In this solution, the light-incident surface 1211 has two light distribution regions, and the light distribution structures adopted for light rays of different angles in each light distribution region are different, which can be conducive to improving the light distribution accuracy of the light-incident surface 1211, and further improving the light supplement performance of the supplementary light 100.

[0056] In a specific solution, the surface type parameters of the arc-shaped convex surface are shown in Table 2 below: Table 2

[0057] The data in the above Table 2 can determine a spline curve. By rotating this spline curve around the central optical axis W, the surface contour of the arc-shaped convex surface can be obtained. Of course, the parameters of the arc-shaped convex surface are not limited to the data in Table 2, and the data parameters of the arc-shaped convex surface can fluctuate between plus and minus 10%. Of course, the arc-shaped convex surface is not limited to being formed by rotating the spline region, and can also be formed by rotating the Bezier curve.

[0058] In the embodiments disclosed in the present application, as Figure 3 shown, through the settings of different surface types of the light-incident surface 1211, the first reflecting surface 1212, and the second reflecting surface 1222, three precise light distributions of the light rays are realized, and then the ultra-high light utilization rate is realized. Therefore, the supplementary light 100 has higher illuminance performance. In addition, through the rotation of the optical path of the first reflecting surface 1212, the special texture design of the second reflecting surface 1222, and the bending design of the light-emitting structure of the light guide member 120, the three cooperate with each other to solve the problem of inconsistent brightness distribution on the light-transmitting area 201 when the front supplementary light 100 is lit due to the eccentricity between the center of the light rays emitted by the light-emitting light source 110 and the center of the light-transmitting area 201.

[0059] In the above solution, the light-incident surface 1211 can be the surface on one side of the light-incident portion 121.

[0060] In another alternative solution, a convex portion 121a may be provided on the surface of the light incident portion 121 facing the light emitting light source 110, and the light incident surface 1211 may be provided on the surface of the convex portion 121a facing away from the light incident portion 121. This solution is equivalent to increasing the local thickness of the light incident portion 121, thereby facilitating the improvement of the overall strength of the light guide member 120. In addition, during the assembly process of the electronic device, the convex portion 121a can be positioned and cooperated with the installation base of the electronic device, thereby facilitating the improvement of the assembly accuracy of the electronic device.

[0061] In another embodiment, the electronic device may further include a circuit board bracket 300. Here, the circuit board bracket 300 can be understood as a part of the housing of the electronic device, specifically, a part of the middle frame. The light guide member 120 may be located between the display screen 200 and the circuit board bracket 300, and the circuit board bracket 300 is provided with a receiving hole 301. At least a part of the convex portion 121a is located in the receiving hole 301, and the part of the light incident portion 121 protruding radially along the receiving hole 301 from the convex portion 121a can be lapped on the circuit board bracket 300. In this solution, the convex portion 121a can sink into the receiving hole 301, so that the part of the light incident portion 121 protruding from the convex portion 121a can be lapped on the port edge of the receiving hole 301, thereby further improving the assembly reliability of the electronic device. In addition, the convex portion 121a can also be limited and cooperated with the receiving hole 301 in the circumferential direction, thereby avoiding the risk of rotational misalignment of the light guide member 120, and further improving the assembly reliability of the electronic device.

[0062] In another alternative embodiment, in the extending direction of the central optical axis W of the light emitting light source 110, the projection profile of the convex portion 121a may be a polygonal structure. At this time, the convex portion 121a is a polygonal structure, which is beneficial to realizing the limitation of the convex portion 121a and the receiving hole 301. For example, the convex portion 121a may be a quadrangular prism structure, and the receiving hole 301 may be a rectangular hole structure matching the quadrangular prism structure. Of course, the convex portion 121a may also be other polygonal prism structures, which are not limited herein.

[0063] In another alternative embodiment, the light incident surface 1211 and the second reflection surface 1222 may be located on the same side of the light guide member 120, and the second reflection surface 1222 and the light emitting surface 1221 are located on the same side of the light guide member 120. In this solution, the light incident surface 1211 is located on the side facing away from the light emitting surface 1221, so that the light emitting light source 110 is on the side of the light guide member 120 facing away from the display screen 200, thereby avoiding the risk of interference between the light emitting light source 110 and the display screen 200.

[0064] In another solution, the number of light-transmitting regions 201 can be at least two, namely a first light-transmitting region 201a and a second light-transmitting region 201b. The first light-transmitting region 201a and the second light-transmitting region 201b can be spaced apart along the same edge of the display screen 200. The number of fill lights 100 can be at least two, namely a first fill light 101 and a second fill light 102. The first fill light 101 corresponds to the first light-transmitting region 201a, and the second fill light 102 corresponds to the second light-transmitting region 201b. In this solution, since the electronic device is provided with multiple front fill lights 100, the fill light performance of the front camera of the electronic device can be further improved.

[0065] Further, in a plane parallel to the display surface of the display screen 200, the inclination directions of the light-emitting portions 122 of the first fill light 101 and the second fill light 102 are opposite. In this solution, the opposite inclination directions of the light-emitting portions 122 of the first fill light 101 and the second fill light 102 can increase the distance between the first fill light 101 and the second fill light 102, thereby avoiding the problem that the first fill light 101 and the second fill light 102 are too close, resulting in a greater difficulty in the stacked arrangement of the electronic device.

[0066] Of course, if the stacking conditions in the electronic device permit, in a plane parallel to the display surface of the display screen 200, the inclination directions of the light-emitting portions 122 of the first fill light 101 and the second fill light 102 can also be the same. This is not limited in this article.

[0067] In addition, the electronic device disclosed in the present application further includes a circuit board, and the circuit board can be disposed on the above-mentioned circuit board bracket 300. The circuit board here can be the main board of the electronic device or the secondary board of the electronic device. The light-emitting light source can be electrically connected to the circuit board, and the circuit board is used to control and supply power to the light-emitting light source 110.

[0068] An experiment on the illuminance distribution of the projection surface at a projection distance of 300 mm is carried out for the solution shown in the present application. The illuminance distribution of the projection surface at the 300 mm projection position covers a rectangular field of view with a maximum field of view of ±42°. Its illuminance uniformly decays as the field of view increases. The emitted light brightness is uniform and soft, does not irritate the human eye, and can achieve a continuous fill light effect. Therefore, the front camera ability of the electronic device can be greatly improved.

[0069] The electronic device disclosed in the embodiments of the present application can be a smart phone, a tablet computer, an e-book reader, a wearable device (such as a smart watch), an electronic game console and other devices. The embodiments of the present application do not limit the specific types of the electronic device.

[0070] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them fall within the protection scope of the present application.

Claims

1. An electronic device, characterized in that, include: A display screen, wherein the display screen has a light-transmitting area; A fill light, the fill light is located on a side of the display screen away from its display surface, the fill light comprises a light source and a light guide, the light guide comprises a light entrance portion and a light exit portion connected to each other, the light exit portion extends obliquely relative to the light entrance portion in a plane parallel to the display surface of the display screen, the light entrance portion comprises a light entrance surface and a first reflection surface disposed opposite to each other, the light source is disposed opposite to the light entrance surface, the light exit portion comprises a light exit surface and a second reflection surface disposed opposite to each other, the light exit surface and the second reflection surface are both located at an end of the light exit portion away from the light entrance portion, and the light exit surface is disposed opposite to the light-transmitting area; The light emitted by the luminous light source is emitted from the light-transmitting area after passing through the light incident surface, the first reflecting surface, the second reflecting surface and the light emitting surface.

2. The electronic device according to claim 1, wherein The direction in which the first reflecting surface faces the second reflecting surface is the same as the direction in which the light emitting portion extends obliquely relative to the light incident portion in a plane parallel to the display surface of the display screen.

3. The electronic device according to claim 2, wherein The light exit portion has a first side and a second side that are arranged opposite to each other, and the first side and the second side are both connected to the light entrance portion; an intersection line is formed between the light exit portion and the light entrance portion; at least one of the first side and the second side forms a first angle with the intersection line; The first reflecting surface is a cylinder, and a second angle is formed between a straight generatrix of the cylinder and the intersection line; The first angle is equal to the second angle; or the first angle and the second angle are complementary angles.

4. The electronic device according to any one of claims 1 to 3, characterized in that A groove is formed on the surface of the light incident portion on a side away from the light source, and the inner side surface of the groove forms the first reflecting surface.

5. The electronic device according to claim 4, wherein The first reflecting surface has a first edge line on the side facing the bottom surface of the groove, and the first reflecting surface has a second edge line on the side facing away from the bottom surface of the groove; the central optical axis of the light emitting light source is located between the first edge line and the second edge line, and the distance between the central optical axis of the light emitting light source and the first edge line is smaller than the distance between the central optical axis of the light emitting light source and the second edge line.

6. The electronic device according to claim 1, wherein The light exit portion has a first side edge and a second side edge that are arranged opposite to each other, and the first side edge and the second side edge are both connected to the light entrance portion; The light emitting surface is a strip surface, and the side of the light emitting surface facing the light incident part is a first long side, the first end of the first long side faces the first side, and the second end of the first long side faces the second side, and the distance between the first end of the first long side and the central optical axis of the light emitting light source is smaller than the distance between the second end of the first long side and the central optical axis of the light emitting light source.

7. The electronic device according to claim 6, wherein In the direction from the first side edge to the second side edge, the distance between the light emitting surface and the second reflecting surface gradually decreases; the second reflecting surface includes a plurality of tooth-shaped structures, and the plurality of tooth-shaped structures are continuously arranged along the direction from the first side edge to the second side edge.

8. The electronic device according to claim 7, characterized in that, A plurality of the tooth-shaped structures are concentric annular teeth; in the direction from the first side to the second side, the distance between two adjacent tooth-shaped structures gradually decreases.

9. The electronic device according to claim 1, wherein The light incident surface includes a first light incident structure and a second light incident structure, both of which are rotationally symmetric about the central optical axis of the light emitting source; the first light incident structure is an arc-shaped convex surface, the second light incident structure includes a plurality of arc-shaped teeth, the second light incident structure is arranged around the first light incident structure, and the plurality of arc-shaped teeth are continuously arranged in a direction away from the first light incident structure.

10. The electronic device according to claim 1, wherein A convex portion is provided on the surface of the light incident portion facing the light emitting source, and the light incident surface is provided on the surface of the convex portion facing away from the light incident portion.

11. The electronic device according to claim 10, wherein The electronic device further includes a circuit board bracket, the light guide member is located between the display screen and the circuit board bracket, the circuit board bracket is provided with a receiving hole, at least a part of the convex portion is located in the receiving hole, and the part of the light incident portion protruding from the convex portion in the radial direction of the receiving hole overlaps the circuit board bracket.

12. The electronic device according to claim 10 or 11, wherein In the extending direction of the central optical axis of the light emitting source, the projection profile of the convex portion is a polygonal structure.

13. The electronic device according to claim 1, wherein The light incident surface and the second reflection surface are located on the same side of the light guide member, and the first reflection surface and the light exit surface are located on the same side of the light guide member.

14. The electronic device according to claim 1, characterized in that, The number of the light transmissive regions is at least two, namely a first light transmissive region and a second light transmissive region, and the first light transmissive region and the second light transmissive region are spaced apart along the same edge of the display screen; The number of the supplementary light lamps is at least two, namely a first supplementary light lamp and a second supplementary light lamp, the first supplementary light lamp corresponds to the first light transmissive region, and the second supplementary light lamp corresponds to the second light transmissive region; Wherein, in a plane parallel to the display surface of the display screen, the inclination directions of the light exit portions of the first supplementary light lamp and the second supplementary light lamp are opposite.

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