A terminal device

Abstract

The application provides a terminal device, which comprises a transparent cover plate, an ink layer and a front camera module, the ink layer is arranged at the periphery of the transparent cover plate, and the ink layer is located between the transparent cover plate and the front camera module; the ink layer is provided with a light transmission hole corresponding to the position of the front camera module, the light transmission hole is a non-circular through hole, and the size of the light transmission hole along a first direction is less than 2.3 mm, the first direction is the width direction of the ink layer. In the embodiment of the application, the front camera module of the terminal device has a smaller opening size in the first direction, so that the width of the black border area can be reduced, and then the area of the black border area can be reduced, and the screen-to-body ratio of the terminal device is improved.

Description

Technical Field

[0001] This application relates to the field of electronic devices, and more specifically, to a terminal device. Background Technology

[0002] With the development of electronic technology, the requirements for screen-to-body ratio of terminal devices (such as tablets) are becoming increasingly stringent, and the placement of the front-facing camera module is a crucial factor affecting this ratio. When the front-facing camera module's opening is located in the black border of the terminal device, the opening area is often larger than the actual field of view (FOV) projection area, resulting in wasted space. This hinders the reduction of the opening size in the Y direction (the width direction of the black border), thus reducing the black border area and ultimately hindering the improvement of the screen-to-body ratio. Utility Model Content

[0003] This application provides a terminal device in which the front-facing camera module has a smaller opening size in the Y direction, thereby reducing the area of ​​the black border region and increasing the screen-to-body ratio of the terminal device.

[0004] In a first aspect, a terminal device is provided, comprising a transparent cover plate, an ink layer, and a front-facing camera module. The ink layer is disposed around the periphery of the transparent cover plate, and the front-facing camera module is located on the side of the ink layer away from the transparent cover plate. The ink layer has a light-transmitting hole at the position corresponding to the front-facing camera module. The light-transmitting hole is a non-circular through hole, and the size of the light-transmitting hole along a first direction is less than 2.3 mm. The first direction is the width direction of the ink layer corresponding to the front-facing camera module.

[0005] For example, the terminal device is an electronic device with a front-facing camera module, such as a tablet, computer, or 2-in-1 tablet.

[0006] For example, the screen of the terminal device may include a display area and a non-display area located around the perimeter of the display area. A transparent cover plate (such as a glass cover plate) is the top layer of the screen, used to protect the display screen, front-facing camera module, etc., underneath it. An ink layer corresponds to the non-display area, and the front-facing camera module is disposed below the ink layer. It should be understood that the non-display area of ​​the screen may appear as a black border from a viewing angle, with the black border surrounding the perimeter of the display area.

[0007] Considering that the circular light-transmitting hole of commonly used front-facing camera modules has a relatively large size in the first direction (generally greater than 2.3mm), there is a certain amount of wasted space. In this embodiment, by setting the light-transmitting hole of the front-facing camera module as a non-circular through hole with a size of less than 2.3mm in the first direction, the size of the light-transmitting hole in the first direction can be reduced. In other words, the front-facing camera module of the terminal device has a smaller opening size in the first direction, thereby narrowing the width of the black border area, which in turn reduces the area of ​​the black border area and increases the screen-to-body ratio of the terminal device.

[0008] In conjunction with the first aspect, in some implementations of the first aspect, the size of the light-transmitting hole along the first direction is greater than or equal to 1.5 mm and less than 2.3 mm.

[0009] For example, the size of the light-transmitting hole along the first direction can be 1.8 mm. Alternatively, the size of the light-transmitting hole along the first direction can be any of the following: 1.5 mm, 1.6 mm, 1.7 mm, 1.85 mm, 1.9 mm, 1.95 mm, 2.0 mm, 2.1 mm, or 2.2 mm.

[0010] In this embodiment, the size of the light-transmitting hole along the first direction is greater than or equal to 1.5mm and less than 2.3mm. While not blocking the light from entering the front camera module, it can also have a small opening size, which can narrow the width of the black border area, thereby reducing the area of ​​the black border area and increasing the screen ratio of the terminal device.

[0011] In conjunction with the first aspect, in some implementations of the first aspect, the size of the light-transmitting aperture in the first direction is configured such that it can transmit all light within the vertical field of view of the front camera module and is compatible with predetermined assembly tolerances.

[0012] In this embodiment, when setting the size of the light-transmitting hole of the front camera module along the first direction, all light rays within the vertical field of view (VFOV) of the front camera module and the assembly tolerance of the front camera module are taken into account. This ensures that while reducing the size of the front camera module, the image captured by the front camera module is not obstructed, thus avoiding affecting the imaging of the front camera module.

[0013] In conjunction with the first aspect, in some implementations of the first aspect, the aperture size W along the first direction is obtained by the following formula: W = 2 × ((VCVD + H + ZD) × tan( / 2))+2×YD;wherein, the The vertical field of view (VFOV) of the front-facing camera module is defined as follows: VCVD is the distance from the vertical field of view cone of the front-facing camera module along the second direction to the surface of the front-facing camera module, or the distance from the intersection of the reverse extensions of the VFOV along the second direction to the surface of the front-facing camera module; H is the distance from the front-facing camera module along the second direction to the ink layer or the light-transmitting hole; ZD is the assembly tolerance of the front-facing camera module along the second direction; YD is the assembly tolerance of the front-facing camera module along the first direction; the second direction is the thickness direction of the terminal device, and the second direction is perpendicular to the first direction.

[0014] In this embodiment of the application, when specifically calculating the opening size of the light-transmitting hole along the first direction, the vertical field of view (VFOV) of the front camera module and the assembly tolerance of the front camera module in the second and first directions are considered, so that the projection area of ​​the actual VFOV is located within the light-transmitting hole of the front camera module, thus avoiding affecting the imaging of the front camera module.

[0015] In conjunction with the first aspect, in some implementations of the first aspect, the size of the light-transmitting aperture in a third direction is configured such that it can transmit all light within the horizontal field of view of the front-facing camera module and is compatible with predetermined assembly tolerances, wherein the third direction is perpendicular to the first direction and the second direction, and the second direction is the thickness direction of the terminal device.

[0016] In this embodiment of the application, when setting the size of the light-transmitting hole of the front camera module along the first direction, all light rays in the horizontal field of view (HFOV) range of the front camera module and the assembly tolerance of the front camera module are taken into account. This ensures that while reducing the size of the front camera module, the image captured by the front camera module is not obstructed, thus avoiding affecting the imaging of the front camera module.

[0017] In conjunction with the first aspect, in some implementations of the first aspect, the aperture size L along the third direction is obtained by the following formula: L = 2 × ((HCVD + H + ZD) × tan( / 2))+2×XD;wherein, the Here, HFOV is the horizontal field of view of the front camera module, HCVD is the distance from the horizontal viewing angle cone of the front camera module along the second direction to the surface of the front camera module, or the distance from the intersection of the reverse extensions of HFOV along the second direction to the surface of the front camera module, H is the distance from the front camera module along the second direction to the ink layer or the light-transmitting hole, ZD is the assembly tolerance of the front camera module along the second direction, and XD is the assembly tolerance of the front camera module along the third direction.

[0018] In this embodiment of the application, when specifically calculating the opening size of the light-transmitting hole along the third direction, the horizontal field of view (HFOV) of the front camera module and the assembly tolerance of the front camera module in the second and third directions are taken into account, so that the projection area of ​​the actual HFOV is located within the light-transmitting hole of the front camera module, thus avoiding affecting the imaging of the front camera module.

[0019] In conjunction with the first aspect, in some implementations of the first aspect, the shape of the light-transmitting hole is at least one of the following: a racetrack circle, an ellipse, a rectangle, a rounded rectangle, or a polygon.

[0020] In the embodiments of this application, the shape of the light-transmitting hole can be varied, such as a runway circle, ellipse, rectangle, rounded rectangle, polygon, etc., which can enrich the shape of the camera opening.

[0021] In one possible implementation, to improve the aesthetics of the terminal device, the opening of the front-facing camera module can be a racetrack-shaped circle. The shape of the light-transmitting hole is formed by two parallel and spaced-apart first line segments, a second line segment, and two semicircular arcs connecting the same end of the first and second line segments.

[0022] In one possible implementation, the radii of the two semicircles are equal.

[0023] In this embodiment, by setting the light-transmitting hole of the front camera module to a racetrack-like circle, the width of the black border area of ​​the terminal device can be narrowed, while the aesthetic appearance of the terminal device can also be improved. Attached Figure Description

[0024] Figure 1 This is a schematic structural diagram of a terminal device provided in an embodiment of this application.

[0025] Figure 2 This is a schematic structural diagram of another terminal device provided in the embodiments of this application.

[0026] Figure 3 This is a schematic diagram of the opening shape of a front-facing camera module provided in an embodiment of this application.

[0027] Figure 4 This is a schematic structural diagram of another terminal device provided in the embodiments of this application.

[0028] Figure 5 This is a schematic structural diagram of another terminal device provided in the embodiments of this application.

[0029] Figure 6 This is a cross-sectional diagram of the terminal device provided in this application, obtained by taking a cross-section along the XZ plane at the front-facing camera module.

[0030] Figure 7 This is a schematic diagram of the opening shape of another front-facing camera module provided in an embodiment of this application.

[0031] Figure 8 This is a schematic diagram of the opening shapes of various front-facing camera modules provided in the embodiments of this application.

[0032] Figure 9 This is a schematic diagram illustrating the relationship between a front-facing camera module and the projection area of ​​the actual field of view (FOV) provided in an embodiment of this application.

[0033] Figure 10 This is a schematic diagram illustrating the relationship between another front-facing camera module and the actual field of view (FOV) projection area provided in this application embodiment. Detailed Implementation

[0034] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0035] It should be noted that, in the description of the embodiments of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. The "and / or" in this article is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone.

[0036] In the embodiments of this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more, and "at least one" and "one or more" refer to one, two, or more than two. The singular expressions "a," "an," "the," "the," "this," and "this" are intended to also include expressions such as "one or more," unless the context explicitly indicates otherwise.

[0037] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0038] In the description of the embodiments of this application, the terms "upper," "lower," "inner," "outer," "top," "bottom," and "side," etc., indicate orientations or positional relationships relative to the indicated placement of components in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and not to indicate or imply a specific orientation that the device or component must have, or its construction and operation in a specific orientation. They can change accordingly depending on the orientation of the components in the accompanying drawings, and therefore should not be construed as limiting this application. Furthermore, the term "vertical" in this application is not strictly vertical, but within the allowable error range. For example, with current technology, A being vertical to B means that A and B are perpendicular or approximately perpendicular; for example, the angle between A and B can be between 80 and 100 degrees. Similarly, "parallel" is not strictly parallel, but within the allowable error range. For example, with current technology, A being parallel to B means that A and B are parallel or approximately parallel; for example, the angle between A and B can be between 0 and 10 degrees. In addition, unless otherwise specified, the scope in the description of the scope in this application includes the end value.

[0039] In the embodiments of this application, the same reference numerals are used to denote the same component or part. For the same part in the embodiments of this application, only one part or component may be labeled with reference numerals in the figures. It should be understood that the reference numerals also apply to other identical parts or components. In addition, the various parts in the figures are not drawn to actual scale, and the dimensions and sizes of the parts shown in the figures are only exemplary and should not be construed as limiting this application.

[0040] Figure 1 and Figure 2This is a schematic structural diagram of a terminal device provided in an embodiment of this application. The terminal device involved in this embodiment is an electronic device with a front-facing camera module, such as a mobile phone, tablet, laptop, laptop computer, 2-in-1 tablet, camera, video recorder, etc. This embodiment does not impose any special limitations on the specific form of the terminal device.

[0041] For example, Figure 1 Figures (a) and (b) schematically illustrate the terminal device 100 at different angles. Figure 2 Figures (a) and (b) schematically illustrate different types of terminal devices 100, respectively. Figure 2 Image (a) shows a terminal device with a conventional screen. Figure 2 Image (b) shows a terminal device with a notch screen. It is understandable that... Figure 1 The terminal device 100 shown is a mobile phone. Figure 2 The terminal device 100 shown can be a tablet.

[0042] Combination Figure 1 and Figure 2 As shown, the terminal device 100 may include a housing 101, a screen 102, and a camera compact module (CCM) 103.

[0043] The housing 101 has a receiving space for accommodating the components of the terminal device 100. The housing 101 also serves to protect the terminal device 100 and support the entire device. The screen 102 and the camera module 103 are disposed within the receiving space of the housing 101 and connected to the housing 101. In some embodiments, the housing 101 may include a back cover opposite to the screen 102 and a mid-frame disposed between the back cover and the screen 102; the screen 102 and the camera module 103 may be fixed to the mid-frame. The housing 101 may be made of metal, plastic, ceramic, or glass, etc.

[0044] Screen 102 may include a cover glass (CG) and a display panel (DP), with the cover glass (or glass cover) covering the display panel to protect it.

[0045] The display screen is used to display image information, such as images captured by the camera module 103. The display screen can be a liquid crystal display (LCD), an organic light-emitting diode (OLED) display, or the like. It can be a regular-shaped display, an irregularly shaped display, a foldable display, etc. The display screen can be located on the front and / or back of the terminal device 100. Here, the front of the terminal device 100 can be understood as the side facing the user when using the terminal device 100, and the back of the terminal device 100 can be understood as the side facing away from the user when using the terminal device 100.

[0046] The camera module 103 is used to capture still images or videos, such as for taking photos, video calls, and target recognition. The camera module 103 can be located on the front or back of the terminal device 100. A front-mounted camera module 103 can be called a front-facing camera module 103a, and a rear-mounted camera module 103 can be called a rear-facing camera 103b. It is understood that the location of the camera module 103 can be determined according to actual needs. Figure 1 The installation locations shown are merely illustrative.

[0047] In some embodiments, the terminal device 100 may further include an ink layer 106, which is disposed around the periphery of the transparent cover and located between the transparent cover and the front-facing camera module 103a. The ink layer 106 may also be referred to as a light-shielding layer, a border area, or a black border area, etc. It should be understood that the front-facing camera module 103a may be disposed in the black border area of ​​the terminal device 100. In some examples, such as... Figure 2 As shown in (b), the front camera module 103a can be set in the notch area of ​​the notch screen of the terminal device 100.

[0048] In some embodiments, the camera module 103 can be a vertical module or a folding module (or a periscope camera module, folding-back camera module). A vertical camera module can be understood as light entering the camera module directly hitting the image sensor without bending the light path. A folding camera module can be understood as light entering the camera module needing to pass through optical elements such as mirrors, lenses, and prisms before hitting the image sensor, resulting in a folded light path.

[0049] In some embodiments, the camera module 103 may be a telephoto camera, a wide-angle camera, an ultra-wide-angle camera, or a multispectral camera.

[0050] This application embodiment does not limit the number of camera modules 103; it can be one, two, four, or even more. For example, one or more camera modules can be arranged on the front of the terminal device 100, and / or one or more camera modules can be arranged on the back of the terminal device 100. For instance, when the terminal device 100 includes multiple camera modules, different camera modules can have different focal lengths. The multiple camera modules can be arranged in a straight line or in a ring.

[0051] In some embodiments, one or more of the plurality of camera modules 103 can serve as the main camera module. Typically, the main camera module is responsible for the primary shooting task, usually has the highest pixel count, and can provide higher resolution and a more powerful sensor to meet the user's photography needs in different scenarios.

[0052] In some embodiments, the terminal device 100 may further include a protective lens 104 for protecting the camera module 103. The protective lens 104 is disposed on the housing 101 and covers the camera module 103. The material of the protective lens 104 may be glass, sapphire, ceramic, etc., and this application does not impose any special limitations on it. For example, the protective lens 104 is transparent or partially transparent, allowing light from outside the terminal device 100 to enter the camera module 103 through the protective lens 104.

[0053] In some embodiments, the terminal device 100 may further include an image processor 105, which is located within the receiving space formed by the housing 101 and is communicatively connected to the camera module 103. The image processor 105 is used to acquire image data from the camera module 103 and process the image data. The communication connection between the image processor 105 and the camera module 103 may include data transmission via electrical connections such as wiring, or data transmission via coupling or other means. It is understood that the image processor 105 and the camera module 103 may also be connected via other means capable of data transmission.

[0054] In some embodiments, the image processor 105 may be an image signal processor (ISP) or a digital signal processor (DSP). The ISP is primarily responsible for processing the output data of the image sensor and performing various image processing operations. The DSP processes a wider range of digital signals, including but not limited to image and video processing. In some embodiments, the image processor 105 may be integrated into a system-on-a-chip (SoC).

[0055] In some embodiments, the image processor 105 optimizes the digital image signal and can transmit the processed signal to the screen 102.

[0056] In some embodiments, the terminal device 100 may further include a memory (not shown) for storing images acquired by the camera module 103, so that the images can be retrieved from the memory at any time when they are needed or viewed later. In some embodiments, the image processor 105 may compress the processed digital image signal before storing it in the memory to save storage space.

[0057] It should be understood that Figure 1 The structure shown in the diagram does not constitute a specific limitation on the terminal device 100. The terminal device 100 may include more or fewer components than shown in the diagram. For example, the terminal device 100 may also include one or more of the following components: battery, flash, earpiece, buttons, sensors, etc. Or the terminal device 100 may not include the screen 102, or the terminal device 100 may have a different component arrangement than shown in the diagram. For example, the terminal device 100 includes a terminal body and auxiliary components that can rotate, move or be disassembled relative to the terminal body, and the camera module 103 may be set on the auxiliary components.

[0058] For ease of description, this application defines the thickness direction of the terminal device as the Z direction, and the two directions perpendicular to the Z direction are the X direction and the Y direction, with the X direction perpendicular to the Y direction. In this application embodiment, the Y direction can be the width or narrow side direction of the ink layer 106 (or black edge) corresponding to the front camera module, or the Y direction can be understood as the width / narrow side direction of the ink layer with the light-transmitting hole; the X direction can be the length or long side direction of the ink layer 106 (or black edge) corresponding to the front camera module, or the X direction can be understood as the length / long side direction of the ink layer with the light-transmitting hole. In this application embodiment, the Y direction can also be referred to as the first direction, the Z direction as the second direction, and the X direction as the third direction.

[0059] It should be understood that the X and Y directions may indicate different directions in different types of terminal devices. For example, in a mobile phone, the X direction can be the width direction of the phone, and the Y direction can be the length direction of the phone; as another example, in a tablet, the X direction can be the length direction of the tablet, and the Y direction can be the width direction of the tablet.

[0060] Here, the definitions of the X, Y, and Z directions also apply to the various figures described below. It should be noted that the above definitions of the X, Y, and Z directions are merely for the convenience of describing the positional, connection, or motion relationships between the components in the embodiments of this application, and should not be construed as limiting the embodiments of this application.

[0061] Figure 3 The diagram shows the opening shape of the front camera module 103a. In some examples, the front camera module 103a can be located in the ink layer 106 or the black border area. The black border area is opaque, so a light-transmitting hole 10 is usually provided in the black border area so that external light can pass through the black border area and be received by the front camera module 103a.

[0062] like Figure 3 As shown, the light-transmitting hole of the front-facing camera module 103a is typically a circular hole. This circular light-transmitting hole 10 is generally created after allowing for a margin, based on the diagonal field of view (DFOV) and assembly tolerances of the front-facing camera module 103a. Alternatively, the radius (or diameter) of this circular light-transmitting hole 10 is determined based on the DFOV and assembly tolerances of the front-facing camera module 103a. The DFOV can be referenced below. Figure 9 The ∠APC (∠BPD) shown below Figure 10 The ∠AO1C (∠BO1D) shown is shown. However, the light-sensing area of ​​the sensor of the front camera module 103a is rectangular, and the actual FOV projection area 20 is also rectangular. Therefore, in the Y direction, there is wasted space inside the circular light-transmitting hole 10 and outside the FOV projection area. This is not conducive to reducing the opening size in the Y direction, reducing the area of ​​the black border, or improving the screen ratio.

[0063] For example, such as Figure 3 As shown, along the Y direction, the distance between the upper surface of the actual FOV projection area 20 and the upper vertex of the circular light-transmitting hole 10 is y1, and the distance between the lower surface of the actual FOV projection area 20 and the lower vertex of the circular light-transmitting hole 10 is y2. y1 and y2 can be equal or unequal. y1 and y2 represent the wasted size of the circular opening of the front-facing camera module 103a, therefore it is necessary to reduce the opening size in the Y direction. In other words, by designing to reduce the size of y1 and y2, the front-facing camera module of the terminal device can have a smaller opening size in the Y direction, which can narrow the width of the black border area, thereby reducing the area of ​​the black border area and increasing the screen-to-body ratio of the terminal device.

[0064] Figure 4 and Figure 5 This is a schematic diagram of the structure of the terminal device 300 provided in the embodiments of this application. Figure 6 This is a cross-sectional diagram of the terminal device 300 along the XZ plane at the front-facing camera module 200. It should be understood that the following mainly describes the differences between the terminal device 300 and the aforementioned terminal device 100; other structural components of the terminal device 300 can be referenced in the above description of the terminal device 100.

[0065] like Figures 4 to 6 As shown, the terminal device 300 includes a transparent cover plate 310, an ink layer 330, and a front-facing camera module 200. The ink layer 330 is disposed around the periphery of the transparent cover plate 310, and the front-facing camera module 200 is located on the side of the ink layer 330 away from the transparent cover plate 310. The ink layer 330 has a light-transmitting hole 331 corresponding to the position of the front-facing camera module 200, allowing external light to pass through the light-transmitting hole 331 and be received by the front-facing camera module 200. For example, the ink layer 330 can be printed onto the transparent cover plate 310 (such as a glass cover) using screen printing technology.

[0066] For example, the terminal device 300 may further include a housing 320, a transparent cover 310 fixedly connected to the housing 320, and a front-facing camera module 200 located within a receiving cavity formed by the transparent cover 310 and the housing 320. In some examples, the housing 320 may be a mid-frame, and the transparent cover 310 may be fixedly connected to the mid-frame.

[0067] In some examples, the screen of terminal device 300 may include a display area and a non-display area located around the perimeter of the display area. A transparent cover plate 310 (such as a glass cover) is the top layer of the screen, used to protect the display screen, front-facing camera module 200, etc., underneath it. An ink layer 330 corresponds to the non-display area of ​​the screen, and the front-facing camera module 200 is disposed below the ink layer 330. It should be understood that the non-display area of ​​the screen may appear as a black border around the perimeter of the display area from a viewing angle.

[0068] For example, such as Figure 4 As shown, the terminal device 300 can be a terminal device with a conventional screen, and the front-facing camera module 200 can be disposed below the ink layer 330 of the conventional screen. For example, as... Figure 5 As shown, the terminal device 300 can be a terminal device with a notch screen, and the front camera module 200 can be located below the ink layer 330 of the notch screen.

[0069] For example, such as Figure 6 As shown, the front-facing camera module 200 may include a housing 210, a lens 220, a motor 230, and a photosensitive component 240.

[0070] The housing 210 has a receiving space for accommodating the lens 220, motor 230, photosensitive element 240, etc. Additionally, the housing 210 also serves a protective and supporting function. This is understandable. Figure 6 The structure of the housing 210 shown is merely exemplary and does not limit the scope of this application. Those skilled in the art can design the shape of the housing 210 according to actual needs.

[0071] Lens 220 mainly includes lens group 221 and lens barrel 222, wherein lens group 221 is housed in the receiving space formed by lens barrel 222. Lens 220 is used to image the scene on the object side onto the image plane on the image side. In some embodiments, lens 220 can also perform certain processing on the received imaging beam (i.e., the beam formed by the light incident on the front camera module 200), such as aberration correction, chromatic aberration elimination, etc.

[0072] Lens group 221 includes at least one lens, the optical parameters of which may be different or partially the same. This application embodiment does not limit the number or shape of lenses in lens group 221; those skilled in the art can design accordingly based on actual needs. The focal length of lens group 221 can be fixed, and correspondingly, lens 220 is a fixed-focus lens. The focal length of lens group 221 can also be adjustable, and correspondingly, lens 220 is a zoom lens. For example, zoom can be achieved by adjusting the relative positions of the lenses in lens group 221.

[0073] The lens barrel 222 has a receiving space, primarily for accommodating the lens assembly 221. In some embodiments, the lens barrel 222 can be a single unit, with the lens assembly 221 housed within this single unit. In other embodiments, the lens barrel 222 may also comprise multiple lens barrel sections, with the lens groups of the lens assembly 221 disposed within these multiple lens barrel sections. Exemplarily, the relative positions between these multiple lens barrel sections can be adjusted, enabling optical zoom by adjusting the relative positions of the lenses.

[0074] Understandable. Figure 6 The structure of the lens barrel 222 and the connection method between the lens group 221 and the lens barrel 222 are merely exemplary and do not limit the embodiments of this application.

[0075] The photosensitive component 240 is disposed behind the lens 220 and is mainly used for imaging. For example, the photosensitive component 240 may include a filter 241, an image sensor 242, and a circuit board 243.

[0076] A filter 241 is disposed between the lens 220 and the image sensor 242. The filter 241 eliminates unwanted light projected onto the image sensor 242, preventing ghosting, stray light, and color cast during image formation. For example, the filter 241 can be an infrared cut-off filter (filtering out long-wavelength light other than visible light), a bandpass filter (allowing light of a specific wavelength to pass through while blocking light outside the passband), or a filter for filtering out other wavelengths of light. The filter 241 can have different effective ranges depending on the application scenario.

[0077] Image sensor 242 is a semiconductor chip used to convert light signals into electrical signals. Specifically, image sensor 242 has an image acquisition area (also called a photosensitive area or photosensitive surface) for acquiring received light and converting the collected light signals into electrical signals proportional to the light signals. For example, image sensor 242 can be a CCD image sensor made of a charge-coupled device (CCD) or a CMOS image sensor made of a complementary metal-oxide-semiconductor (CMOS).

[0078] The image sensor 242 includes multiple photosensitive units, each of which can convert light signals into electrical charges to form an electronic image corresponding to the scene.

[0079] In some embodiments, camera modules with different focal lengths may have their own image sensors, or camera modules with different focal lengths may share the same image sensor.

[0080] The circuit board 243 is electrically connected to the image sensor 242 and is used to transmit electrical signals, such as receiving electrical signals generated by the image sensor 242 and transmitting them to the outside of the front-facing camera module 200, and / or transmitting control signals that control the operation of the image sensor 242 to the image sensor 242. For example, the circuit board 243 may be a flexible printed circuit board (FPC), a printed circuit board (PCB), or a rigid-flex board.

[0081] Motor 230 is used to move lens 220 and / or image sensor 242 to achieve autofocus (AF) and / or optical image stabilization (OIS).

[0082] In some embodiments, motor 230 may include a first motor 231 for moving lens 220 for AF and / or a second motor 232 for moving lens 220 for OIS. Specifically, the first motor 231 is used to move lens 220 for autofocus in the Z direction, and the second motor 232 is used to move lens 220 for optical image stabilization in the X and / or Y directions.

[0083] In some embodiments, motor 230 may include a third motor 233 for moving image sensor 242 for AF and / or OIS.

[0084] In some embodiments, the first motor 231, the second motor 232, and the third motor 233 may be relatively independent components. Alternatively, at least two of the first motor 231, the second motor 232, and the third motor 233 may be integrated into one unit.

[0085] In some embodiments, the first motor 231, the second motor 232, or the third motor 233 may be a voice coil motor (VCM), a shape memory alloy (SMA) motor, a stepping motor, a piezoelectric motor, etc. It should be understood that the specific structure of the first motor 231, the second motor 232, or the third motor 233 may be designed and selected according to the chosen driving method, and this application embodiment does not limit this.

[0086] It should be understood that Figure 6 The structure shown in the diagram does not constitute a specific limitation on the front-facing camera module 200. The front-facing camera module 200 may include more or fewer components than shown in the diagram. For example, the front-facing camera module 200 may also include connectors and peripheral electronic components, or the front-facing camera module 200 may not include the motor 230, which will not be described in detail here.

[0087] Figure 7 and Figure 8 The diagram shown is a schematic of the opening shape of the front camera module 200 provided in the embodiment of this application.

[0088] Combination Figure 6 and Figure 7 As shown in the embodiment of this application, the light-transmitting hole 331 is formed on the ink layer 330. The light-transmitting hole 331 is a non-circular through hole. For example, the shape of the light-transmitting hole 331 can be a racetrack circle. It should be understood that the "shape of the light-transmitting hole 331" described in this application can be specifically understood as the projection shape of the light-transmitting hole 331 along the Z direction on the transparent cover plate 310.

[0089] For example, such as Figure 7 As shown, the projection shape of the light-transmitting hole 331 along the Z direction onto the transparent cover plate 310 can be a shape formed by two parallel and spaced-apart first line segments 11 and second line segments 12, and two semicircular arcs 13 connecting the first line segments 11 and second line segments 12. The radii of the two semicircular arcs 13 are equal, i.e., r1 and r2 are equal. It should be understood that by setting the light-transmitting hole 331 of the front-facing camera module 200 to a racetrack-like circle, the width of the black border area of ​​the terminal device 300 can be narrowed, while also improving the aesthetic appearance of the terminal device 300.

[0090] For example, such as Figure 7As shown, along the Y direction, the distance between the upper surface of the projection area 20 of the actual FOV of the front-facing camera module 200 and the first line segment 11 of the light-transmitting hole 331 is y3, and the distance between the lower surface of the projection area 20 of the actual FOV and the second line segment 12 of the light-transmitting hole 331 is y4. y3 and y4 may be equal or unequal, but both are less than y1 and y2 mentioned above. It can be understood that by setting a racetrack-shaped opening, this application can reduce the opening size of the light-transmitting hole 331 in the Y direction, reduce the size of y1 and y2, narrow the width of the black border area, thereby reducing the area of ​​the black border area and increasing the screen ratio of the terminal device.

[0091] In some examples, such as Figure 7 As shown, the width W of the light-transmitting hole 331 along the first direction (i.e., the Y direction) is less than 2.3 mm. This first direction is the width direction of the ink layer 330 where the front-facing camera module 200 is located. The length L of the light-transmitting hole 331 along the third direction (i.e., the X direction) can be greater than the width W. In this embodiment, the length of the light-transmitting hole 331 is not limited.

[0092] Considering that the circular light-transmitting hole 10 of the front-facing camera module 103a described above has a relatively large size in the first direction (generally greater than 2.3mm), there will be some wasted space. In this embodiment, by setting the light-transmitting hole of the front-facing camera module as a non-circular through hole with a size less than 2.3mm in the first direction, the size of the light-transmitting hole in the first direction can be reduced. That is to say, the front-facing camera module of the terminal device has a smaller opening size in the first direction, thereby narrowing the width of the black border area, and thus reducing the area of ​​the black border area and increasing the screen-to-body ratio of the terminal device.

[0093] In some embodiments, the width W of the light-transmitting hole 331 along the Y direction can be greater than or equal to 1.5 mm and less than 2.3 mm. For example, the width W of the light-transmitting hole 331 along the first direction can be any of the following: 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.85 mm, 1.9 mm, 1.95 mm, 2.0 mm, 2.05 mm, 2.1 mm, 2.15 mm, 2.2 mm, or 2.25 mm.

[0094] For example, the terminal device provided in this application embodiment can be a tablet. The shape of the opening corresponding to the front camera module of the tablet can be a racetrack circle. The width W of the racetrack circle opening along the first direction can be 1.8mm. The diagonal field of view (DFOV) corresponding to the front camera module can be 91.5°, the horizontal field of view (HFOV) can be 78.8°, and the vertical field of view (VFOV) can be 63.3°.

[0095] In some embodiments, the light-transmitting hole 331 of the front-facing camera module is configured as follows: Figure 7 The circular runway shown can also be set to an ellipse, rectangle, rounded rectangle, polygon, etc., thus enriching the shape of the camera opening. For example, see reference. Figure 8 In (a), the shape of the light-transmitting aperture 331 can be elliptical, and the projection area 20 of the actual FOV of the front-facing camera module 200 is located inside the elliptical light-transmitting aperture 331. (See reference) Figure 8 In (b), the shape of the light-transmitting hole 331 can be a combination of a circle and a rectangle, or in other words, the shape of the light-transmitting hole 331 can be an irregular shape obtained by truncating a circular light-transmitting hole. The projection area 20 of the actual FOV of the front-facing camera module 200 is located inside the light-transmitting hole 331. (See reference) Figure 8 In (c), the shape of the light-transmitting hole 331 can be rectangular, and the projection area 20 of the actual FOV of the front-facing camera module 200 is located inside the rectangular light-transmitting hole 331. (See reference) Figure 8 In (d), the shape of the light-transmitting hole 331 can be a rounded rectangle, and the projection area 20 of the actual FOV of the front camera module 200 is located inside the rounded rectangle light-transmitting hole 331. It should be understood that the shape of the light-transmitting hole 331 described above is only an illustrative example and should not be construed as a limitation on the embodiments of this application.

[0096] Figure 9 The diagram shows the relationship between a front-facing camera module 200 and the projection area ABCD of the actual field of view (FOV).

[0097] In some embodiments, the light-transmitting aperture 331 of the light-shielding layer can be configured to allow light to pass through the entire field of view of the front-facing camera module 200. For example, refer to Figure 9 The front-facing camera module 200 has a viewing point P, which is the center of the lens entrance pupil.

[0098] For example, the field of view (FOV) of the front-facing camera module 200 is defined by a four-sided pyramid-shaped viewing cone with the viewing cone viewpoint P as its vertex. The size and position of the light-transmitting aperture 331 are set such that the cross-section of the viewing cone on the plane of the ink layer 330 completely falls within the area of ​​the light-transmitting aperture 331. In other words, the orthographic projection area of ​​the light-transmitting aperture 331 on the ink layer 330 completely covers the area formed by the intersection of the viewing cone and the plane of the ink layer 330. For example, to further ensure mass production reliability, the size of the light-transmitting aperture 331 also includes a compensation amount to accommodate the assembly tolerances of the front-facing camera module 200. For example, the contour of the light-transmitting aperture 331 is formed by offsetting the contour of the intersecting area outward by a predetermined distance, which can be used to compensate for assembly tolerances.

[0099] In some examples, combined Figure 7 and Figure 9 As shown, the aperture size W of the light-transmitting hole 331 along the Y direction can be obtained by the following formula: W = 2 × EF + 2 × YD, that is, W = 2 × ((DP + H + ZD) × tan( / 2))+2×YD.

[0100] in, For the vertical field of view (VFOV) of the front-facing camera module 200, such as Figure 9 In the figure, ∠FPG; DP is the distance from the viewpoint P of the viewing cone along the Z direction to the surface of the front camera module 200; H is the distance from the front camera module 200 to the ink layer 330 along the Z direction; ZD is the assembly tolerance of the front camera module 200 along the Z direction; and YD is the assembly tolerance of the front camera module 200 along the Y direction.

[0101] In some examples, combined Figure 7 and Figure 9 As shown, the aperture size L along the X direction of the light-transmitting hole 331 can be obtained by the following formula: L = 2 × HE + 2 × XD, that is, L = 2 × ((DP + H + ZD) × tan( / 2))+2×XD.

[0102] in, The horizontal field of view (HFOV) of the front-facing camera module is 200, such as Figure 9 In the figure, ∠HPG; DP is the distance from the viewpoint P of the viewing cone along the Z direction to the surface of the front camera module 200; H is the distance from the front camera module 200 to the light-transmitting hole 331 along the Z direction; ZD is the assembly tolerance of the front camera module 200 along the Z direction; and XD is the assembly tolerance of the front camera module 200 along the X direction.

[0103] It should be noted that the "optical center" or "viewpoint" upon which VFOV and HFOV rely may not be physically identical. In reality, a camera lens is a complex system composed of multiple lenses, and its entrance pupil is a virtual plane formed by the combined imaging of all the lenses, rather than a physical point.

[0104] For light rays at different angles (especially those with a large field of view), the effective "entry pupil center" or "viewpoint" may shift slightly along the optical axis, a phenomenon known as pupil shift. This means that the viewpoint perceived by light rays from a vertical angle may theoretically be different from the viewpoint perceived by light rays from a horizontal angle. Furthermore, distortions inherent in the lens itself (such as barrel or pincushion distortion) can cause the light path to not be a perfectly straight cone, resulting in optical distortion, which further complicates the shape of the viewing cone.

[0105] Therefore, the reference point used to accurately calculate the ray paths at the VFOV and HFOV boundaries may not be the same point in an absolute sense. That is to say, the "viewpoint cone" or "entry pupil center" mentioned in this article is a representative reference point of the optical system of the front camera module 200. Those skilled in the art will understand that in actual optical systems, rays from different field of view angles may correspond to reference points with slightly different effects.

[0106] For example, Figure 10 The diagram illustrates the relationship between another front-facing camera module 200 and the actual projected field of view (FOV) area ABCD. In some examples, the viewing angle cones corresponding to light rays from different field of view angles may differ; that is, the viewing angle cones corresponding to the diagonal field of view (DFOV), vertical field of view (VFOV), and horizontal field of view (HFOV) do not overlap. For example, see reference... Figure 10 The diagonal field of view (DFOV) corresponding to the diagonal view cone point O1, the horizontal field of view (HFOV) corresponding to the horizontal view cone point O2, and the vertical field of view (VFOV) corresponding to the vertical view cone point O3 are not the same point.

[0107] In some embodiments, the size of the light-transmitting aperture 331 in the Y direction is configured to allow all light rays from the front-facing camera module 200 within the vertical field of view (VFOV) while being compatible with predetermined assembly tolerances. In other words, in this embodiment, when setting the size of the light-transmitting aperture 331 of the front-facing camera module 200 in the Y direction, all light rays from the front-facing camera module 200 within the VFOV and the assembly tolerances of the front-facing camera module are considered. This ensures that while reducing the size of the front-facing camera module 200, it does not obstruct the images captured by the front-facing camera module 200, thus avoiding any impact on the imaging performance of the front-facing camera module 200.

[0108] In some examples, combined Figure 7 and Figure 10 As shown, the aperture size W of the light-transmitting hole 331 along the Y direction can be obtained by the following formula: W = 2 × EF + 2 × YD, more specifically, W = 2 × ((VCVD + H + ZD) × tan( / 2))+2×YD.

[0109] in, For the vertical field of view (VFOV) of the front-facing camera module 200, such as Figure 10 In this context, ∠FO3G stands for Vertical Cone View Depth. VCVD can be understood as the distance from the vertical cone viewpoint O3 along the Z-direction to the surface of the front camera module 200, or as the intersection of the reverse extensions of the VFOV lines along the Z-direction. Figure 10 The distance from point O3 in the diagram to the surface of the front camera module 200; H is the distance from the front camera module 200 to the ink layer 330 along the Z direction; ZD is the assembly tolerance of the front camera module 200 along the Z direction; and YD is the assembly tolerance of the front camera module 200 along the Y direction.

[0110] Understandably, when calculating the opening size of the light-transmitting hole 331 along the Y direction, the vertical field of view (VFOV) of the front camera module 200 and the assembly tolerances of the front camera module 200 in the Z and Y directions were taken into account, so that the actual VFOV projection area is located within the light-transmitting hole 331 of the front camera module, thus avoiding affecting the imaging of the front camera module 200.

[0111] In some embodiments, the size of the light-transmitting aperture 331 in the X direction is configured to allow all light rays from the front-facing camera module 200 within the horizontal field of view (HFOV) while being compatible with predetermined assembly tolerances. In other words, in this embodiment, when setting the size of the light-transmitting aperture 331 of the front-facing camera module 200 in the X direction, all light rays from the front-facing camera module 200 within the horizontal field of view (HFOV) and the assembly tolerances of the front-facing camera module 200 are considered. This ensures that while reducing the size of the front-facing camera module 200, it does not obstruct the images captured by the front-facing camera module 200, thus avoiding any impact on the imaging performance of the front-facing camera module 200.

[0112] In some examples, combined Figure 7 and Figure 9 As shown, the aperture size L of the light-transmitting hole 331 along the X direction can be obtained by the following formula: L = 2 × HE + 2 × XD, more specifically, L = 2 × ((HCVD + H + ZD) × tan( / 2))+2×XD.

[0113] in, The horizontal field of view (HFOV) of the front-facing camera module is 200, such as Figure 10In this context, ∠HO2G represents the horizontal cone view depth (HCVD). HCVD can be understood as the distance from the horizontal cone viewpoint O2 along the Z-direction to the surface of the front camera module 200, or as the intersection of the backward extensions of the HFOV lines along the Z-direction. Figure 10 The distance from point O2 in the diagram to the surface of the front camera module 200, H is the distance from the front camera module 200 to the light-transmitting hole 331 along the Z direction, ZD is the assembly tolerance of the front camera module 200 along the Z direction, and XD is the assembly tolerance of the front camera module 200 along the X direction.

[0114] Understandably, when calculating the opening size of the light-transmitting hole 331 along the X direction, the horizontal field of view (HFOV) of the front camera module 200 and the assembly tolerances of the front camera module 200 in the Z and X directions were taken into account, so that the actual HFOV projection area is located within the light-transmitting hole 331 of the front camera module, thus avoiding affecting the imaging of the front camera module 200.

[0115] The above calculation method can be used to calculate the opening size L along the X direction and the opening size W along the Y direction of the light-transmitting hole 331, thereby determining the size of the light-transmitting hole 331 to be cut in the ink layer 330. For example, considering the aesthetics of the opening, the size of the light-transmitting hole 331 in the X direction can be appropriately extended, for example, referring to... Figure 7 You can add semicircles on both sides of the rectangular area to form a through hole similar to a "racetrack".

[0116] In some examples, to further reduce the size of the light-transmitting aperture 331 in the Y direction, part of the vertical field of view (VFOV) can be blocked, making the size in the Y direction even smaller. However, if the size in the Y direction is further reduced, when the front camera module 200 is off-center from the screen-printed aperture, the screen-printed aperture will block part of the FOV. Excessive light blocking may cause a decrease in the relative illumination (RI) and modulation transfer function (MTF) at the edges, affecting the noise and sharpness of the edge field of view imaging. Therefore, this application embodiment considers simulating the RI and MTF data of the light-transmitting aperture 331 under different W conditions and comparing it with the state of the unblocked VFOV to ensure that the relative change does not exceed 15%.

[0117] It should be understood that relative illumination (RI) refers to the ratio (usually expressed as a percentage) of the illumination in the edge region to the illumination in the center region of an optical system's image plane. It reflects the uniformity of illumination on the image plane; a decrease in RI means that the brightness at the edge of the field of view is significantly lower than that at the center. Modulation transfer function (MTF) is a core indicator for evaluating the image sharpness of an optical system. It describes the system's ability to transfer contrast at different spatial frequencies (levels of detail). A higher MTF value (closer to 1) indicates better detail reproduction at that frequency; a decrease in MTF means blurred details such as image edges and textures.

[0118] In this embodiment, simulation results show that when a circular light-transmitting aperture 331 is provided, the value of W for the light-transmitting aperture 331 can be 1.9mm, 1.86mm, 1.85mm, 1.8mm, or even smaller. This is much smaller than the dimension of the circular light-transmitting aperture 331 along the Y direction (typically greater than 2.3mm), and the relative changes in RI and MTF before and after obstruction are both less than 15%, meeting the requirements. In other words, by limiting the dimension of the light-transmitting aperture 331 along the Y direction to greater than or equal to 1.5mm and less than 2.3mm, it is possible to avoid affecting the edge field-of-view imaging noise and sharpness.

[0119] Furthermore, considering that when the size of the light-transmitting aperture 331 along the Y direction is too small, light may strike the edge of the aperture 331, potentially causing edge diffraction effects, resulting in light source distortion and image blurring. Therefore, this embodiment observes the edge diffraction simulation results using a point spread function, and simultaneously attaches an aperture stop of the corresponding width (like a racetrack circle) to the entire device to observe the stray light state at the edge, thus obtaining an acceptable size and width of the light-transmitting aperture 331. Through simulation, limiting the size of the light-transmitting aperture 331 along the Y direction to greater than or equal to 1.5 mm and less than 2.3 mm may avoid edge diffraction effects and prevent problems such as light source distortion and image blurring.

[0120] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A terminal device, characterized in that, It includes a transparent cover plate (310), an ink layer (330), and a front-facing camera module (200). The ink layer (330) is disposed on the periphery of the transparent cover plate (310), and the front-facing camera module (200) is located on the side of the ink layer (330) away from the transparent cover plate (310). The ink layer (330) has a light-transmitting hole (331) at the position corresponding to the front camera module (200). The light-transmitting hole (331) is a non-circular through hole. The size of the light-transmitting hole (331) along the first direction is less than 2.3 mm. The first direction is the width direction of the ink layer (330) corresponding to the front camera module (200).

2. The terminal device according to claim 1, characterized in that, The size of the light-transmitting hole (331) in the first direction is configured such that it can transmit all light within the vertical field of view of the front camera module (200) and is compatible with predetermined assembly tolerances.

3. The terminal device according to claim 2, characterized in that, The aperture size W of the light-transmitting hole (331) along the first direction is obtained by the following calculation formula: W=2×((VCVD+H+ZD)×tan( / 2))+2×YD; Among them, the The vertical field of view of the front camera module (200) is defined as follows: VCVD is the distance from the vertical viewing angle cone of the front camera module (200) along the second direction to the surface of the front camera module (200); H is the distance from the front camera module (200) along the second direction to the ink layer (330); ZD is the assembly tolerance of the front camera module (200) along the second direction; YD is the assembly tolerance of the front camera module (200) along the first direction; the second direction is the thickness direction of the terminal device; and the second direction is perpendicular to the first direction.

4. The terminal device according to any one of claims 1 to 3, characterized in that, The size of the light-transmitting hole (331) in the third direction is configured such that it can transmit all light within the horizontal field of view of the front camera module (200) and is compatible with predetermined assembly tolerances. The third direction is perpendicular to the first direction and the second direction, where the second direction is the thickness direction of the terminal device.

5. The terminal device according to claim 4, characterized in that, The aperture size L of the light-transmitting hole (331) along the third direction is obtained by the following calculation formula: L=2×((HCVD+H+ZD)×tan( / 2))+2×XD; Among them, the HCVD is the horizontal field of view of the front camera module (200), HCVD is the distance from the horizontal viewing angle cone of the front camera module (200) along the second direction to the surface of the front camera module (200), H is the distance from the front camera module (200) to the ink layer (330) along the second direction, ZD is the assembly tolerance of the front camera module (200) along the second direction, and XD is the assembly tolerance of the front camera module (200) along the third direction.

6. The terminal device according to any one of claims 1 to 3, characterized in that, The size of the light-transmitting hole (331) along the first direction is greater than or equal to 1.5 mm and less than 2.3 mm.

7. The terminal device according to any one of claims 1 to 3, characterized in that, The projection shape of the light-transmitting hole (331) on the transparent cover plate (310) along the second direction is at least one of the following: a runway circle, an ellipse, a rectangle, a rounded rectangle, or a polygon. The second direction is the thickness direction of the terminal device and is perpendicular to the first direction.

8. The terminal device according to any one of claims 1 to 3, characterized in that, The projection shape of the light-transmitting hole (331) on the transparent cover plate (310) along the second direction is a shape formed by two parallel and spaced-apart first line segments (11) and second line segments (12), and two semicircular arcs (13) connecting the first line segment (11) and the second line segment (12). The second direction is the thickness direction of the terminal device and is perpendicular to the first direction.

9. The terminal device according to claim 8, characterized in that, The radii of the two semicircular arcs (13) are equal.

10. The terminal device according to any one of claims 1 to 3, characterized in that, The terminal device is a tablet, computer, or 2-in-1 tablet computer.

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