Full-screen display method, full-screen display device and terminal

Abstract

The present disclosure relates to a full-screen display method, comprising: when a front camera is started, a camera module sends a synchronization signal; a display module receives the synchronization signal sent by the camera module, and controls the display of a controllable area of the display screen corresponding to a front through hole of the camera module based on the synchronization signal. When the front camera is started, the full-screen display content on the display screen cannot be seen through the round hole or black spot for the camera module.

Description

Technical Field

[0001] This disclosure relates to the field of display technology for electronic products, and more particularly to full-screen display methods, full-screen display devices and terminals. Background Technology

[0002] Given the ever-increasing power of smartphones, achieving a larger field of view within a limited screen size provides users with a better visual experience. Therefore, smartphone screen-to-body ratios are becoming increasingly higher, and full-screen designs are the future mainstream. However, the presence of components such as the front-facing camera at the top of smartphones severely limits the design of full-screen displays. Therefore, finding a solution that hides the front-facing camera within a full-screen design is crucial.

[0003] While hiding the front-facing camera can achieve a full-screen display, the small hole for the front-facing camera is still visible on the screen when it is turned on, affecting the phone's appearance and user experience. Summary of the Invention

[0004] To overcome the problems existing in related technologies, the present invention discloses a full-screen display method, a full-screen display device, and a terminal.

[0005] According to a first aspect of the present disclosure, a full-screen display method is provided, comprising: when front-facing shooting is initiated, a camera module emits a synchronization signal; a display module receives the synchronization signal emitted by the camera module, and controls the display of a controllable area of ​​the display screen corresponding to the camera module based on the synchronization signal.

[0006] In one embodiment, the synchronization signal emitted by the camera module includes a sampling period; after receiving the sampling period, the display module adjusts the refresh rate of the controllable area of ​​the display screen corresponding to the camera module according to a preset refresh rate based on the sampling period.

[0007] In one embodiment, the synchronization signal includes a sampling period and a sampling rate of the camera module; a first refresh rate of the controllable area of ​​the display screen is determined based on the sampling rate of the camera module, and the refresh rate of the controllable area of ​​the display screen is controlled according to the first refresh rate based on the sampling period.

[0008] In one embodiment, when the camera module is sampling, the camera module sends a first synchronization signal, and the display module controls the controllable area to not display; when the camera module is not sampling, the camera module sends a second synchronization signal, and the display module controls the display of the controllable area.

[0009] In one embodiment, the first synchronization signal is an edge signal or a first level signal; the second synchronization signal is an edge signal or a second level signal; and the level of the first level signal is higher than the level of the second level signal.

[0010] According to a second aspect of the present disclosure, a full-screen display device is provided, including a camera module for emitting a synchronization signal when front-facing shooting is initiated; a display module having a control unit, the display module receiving the synchronization signal from the camera module, and the control unit controlling the display of a controllable area of ​​the display screen corresponding to the camera module based on the synchronization signal.

[0011] Furthermore, the full-screen display device includes: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to process the full-screen display method described in any one of the embodiments of this disclosure.

[0012] According to a third aspect of the present disclosure, a terminal is provided, including a camera module with a front aperture and a sensor; and a display module including an OLED display and a processing chip, wherein the front aperture is disposed below the OLED display; when front shooting is initiated, the camera module emits a synchronization signal; the display module receives the synchronization signal emitted by the camera module, and controls the display of a controllable area of ​​the OLED display corresponding to the front aperture based on the synchronization signal.

[0013] In one embodiment, an insulating element for preventing light leakage is disposed below the OLED display screen surrounding the front through-hole.

[0014] In one embodiment, the camera module further includes a housing, a lens disposed within the housing, a right-angle prism, and a power device for controlling the rotation of the right-angle prism; the front through-hole is disposed in the housing; the housing is further provided with a rear through-hole; the front through-hole and the rear through-hole are positioned directly opposite the right-angle prism.

[0015] In one embodiment, the center positions of the sensor, the lens, and the right-angle prism are located on the same horizontal plane.

[0016] In one embodiment, the power device is a motor or a stepper motor.

[0017] In one embodiment, the right-angle prism can rotate or spherically rotate with a center about a horizontal axis parallel to the OLED display or a vertical axis perpendicular to the OLED display.

[0018] In one embodiment, the optical axis plane of the sensor, the lens, and the right-angle prism is perpendicular to the display surface of the display screen.

[0019] In one embodiment, the isolation element is any one of a light-shielding plate, a reflector, or an optical film.

[0020] In one embodiment, the camera module further includes a Hall sensor to locate and compensate for the rotational position and angle of the right-angle prism.

[0021] In one embodiment, the front through-hole of the camera module is located in a sparsely arranged circuit area or a pixel-split distribution area on the display screen.

[0022] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0023] In this embodiment, when front-facing shooting is initiated, the camera module emits a synchronization signal. The display module receives the synchronization signal and, based on the synchronization signal, controls the display of the controllable area of ​​the display screen corresponding to the through-hole. The controllable area has a high display frequency, and based on the persistence of vision of the human eye, when front-facing shooting is initiated, a full-screen display can be presented on the OLED display screen, and no hole or black spot is displayed on the front of the display screen.

[0024] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0026] Figure 1 This is a schematic diagram illustrating the assembly relationship between a camera module and a display module according to an exemplary embodiment.

[0027] Figure 2 This is an exploded structural diagram of a camera module according to an exemplary embodiment.

[0028] Figure 3 This is a block diagram illustrating a full-screen display method according to an exemplary embodiment.

[0029] Figure 4 This is a schematic diagram illustrating a full-screen holeless display method according to an exemplary embodiment. Detailed Implementation

[0030] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0031] In the following description, a mobile phone is used as an example to illustrate the terminal. However, this disclosure is not limited to this; examples of terminals may include tablet computers, personal digital assistants, smartphones, wearable devices, etc.

[0032] Figure 1 This is a schematic diagram illustrating the assembly relationship between a camera module and a display module according to an exemplary embodiment.

[0033] like Figure 1 As shown in this embodiment, the OLED display 22 is a full-screen display, which includes a display area 221 and a controllable area 222. A camera module 1 is mounted below the controllable area 222; that is, the area on the OLED display 22 corresponding to the front through-hole 11 of the camera module 1 is the controllable area 222.

[0034] Figure 2 This is an exploded structural diagram of a camera module according to an exemplary embodiment.

[0035] like Figure 2 As shown, the camera module 1 includes a housing 12, a sensor 15 disposed inside the housing 12, a lens 13 disposed in front of the sensor 15, a right-angle prism 14 disposed in front of the lens 13, and a power unit 16. The power unit 16 provides power to the right-angle prism 14, causing the right-angle prism 14 to rotate.

[0036] A front through hole 11 and a rear through hole 17 are provided on the housing 12, and the positions of the front through hole 11 and the rear through hole 17 are directly opposite the right angle prism 14.

[0037] Furthermore, the centers of sensor 15, lens 13, and right-angle prism 14 are located on the same horizontal plane, meaning the center lines of sensor 15, lens 13, and right-angle prism 14 are parallel to the display surface of OLED display 22. Power unit 16 is electrically connected to right-angle prism 14. The optical axis plane of sensor 15, lens 13, and right-angle prism 14 is perpendicular to the display surface of OLED display 22.

[0038] like Figure 2As shown, the front through-hole 11 is positioned directly opposite the controllable area 222 of the OLED display 22, and can receive light from the controllable area 222 of the OLED 22.

[0039] In this embodiment, when light passes through the front through-hole 11 and enters the camera module 1, the first reflective surface 141 of the right-angle prism 14 receives the light, which is reflected by the right-angle prism 14, received and reflected by the third reflective surface 143, and transmitted to the sensor 15 through the lens 13. The sensor 15 converts the transmitted light signal into an electrical signal, and further converts the electrical signal into a digital signal and transmits it to the display module 2 for corresponding image display.

[0040] As described above, when light enters the camera module 1 through the front aperture 11, the function of the front-facing camera is realized. That is, a complete front-facing camera is formed by the controllable area 222, the right-angle prism 14, the lens 13, and the sensor 15. When the front-facing camera is activated to take a picture, light passes through the front aperture 11, passes through the right-angle prism 14 and the lens 13, and is transmitted to the sensor 15. Furthermore, the sensor 15 transmits the converted digital signal to the display module 2.

[0041] When the front-facing camera is turned on, the display module 2 can control the refresh rate of the controllable area 222 while the front-facing camera is sampling, so that the front-facing camera can capture images while displaying normally on the display module 2.

[0042] When light passes through the rear through-hole 17 and enters the camera module 1, the power unit 16 drives the right-angle prism 14 to rotate. For example, if it rotates 90° clockwise, the incoming light is received by the second reflective surface 142 of the right-angle prism 14, refracted at a right angle to the third reflective surface 143, and then refracted by the third reflective surface 143 to the lens 13, and finally transmitted to the sensor 15. The sensor 15 converts the transmitted light signal into an electrical signal, and further converts the electrical signal into a digital signal, which is then transmitted to the display module 2 for corresponding image display.

[0043] Thus, when light passes through the rear through-hole 17 and enters the camera module 1, the function of the rear camera is realized. That is, a complete rear camera is formed by the controllable area 222, the right-angle prism 14, the lens 13, and the sensor 15.

[0044] As described above, the camera module 1 contains only one sensor 15 and lens 13, and the functions of both the front-facing camera and the rear-facing camera are achieved by rotating the right-angle prism 14. Compared to the traditional configuration where separate sensors and lenses are used in both the front-facing and rear-facing cameras, this disclosure allows for the use of a single sensor 15 and lens 13 to achieve the functions of both the front-facing and rear-facing cameras.

[0045] As described above, in this embodiment of the present disclosure, the camera module 1 has a smaller stacking space, enabling a camera module of extremely small size. At the same time, the number of components can be reduced, thus lowering manufacturing costs.

[0046] It is further understood that in this embodiment, the first reflective surface 141 and the second reflective surface 142 of the right-angle prism 14 are merely schematic representations; their function of achieving reflection is the same and there is no actual difference. It is also understood that the rotation angle of the right-angle prism 14 is not unique, as long as the purpose of right-angle refraction is achieved.

[0047] Furthermore, the right-angle prism 14 can rotate around a horizontal axis (X-axis) parallel to the OLED display 22, or around a vertical axis (Y-axis) perpendicular to the OLED display 22, or it can rotate spherically. The spherical rotation refers to rotation at any angle. When the right-angle prism 14 rotates to switch between front and rear shooting, the sensor does not need to be powered off.

[0048] Furthermore, the power unit 16 can be a motor or a stepper motor. The power unit 16 can receive a command to start the front shooting operation or the rear shooting operation, and then rotate the right-angle prism 14 accordingly, so that the first reflective surface 141 or the second reflective surface 142 is directly facing the front through hole 11 or the rear through hole 17, ensuring that the light passing through the front through hole 11 or the rear through hole 17 is perpendicular to the first reflective surface 141 or the second reflective surface 142.

[0049] In this embodiment of the disclosure, the camera module 1 also includes a Hall sensor (not shown in the figure), which can locate and compensate the rotation position and rotation angle of the right-angle prism 14 when the power device 16 rotates the right-angle prism 14 accordingly, so as to ensure that the right-angle prism 14 refracts light at a right angle.

[0050] Furthermore, in this embodiment, lens 13 may include multiple lenses, such as 131, 132, 133, and 134. The number of lenses is only shown as four, but is not limited to this. The centers of the multiple lenses are located on the same horizontal plane, and the spacing between the lenses can be adjusted to achieve zooming. The lens material can be resin plastic or glass, preferably glass.

[0051] In this embodiment, the circuitry arranged sparsely in the controllable area 222 directly opposite the front through-hole 11 of the camera module 1 increases the spacing between pixels. This increases the light density in the controllable area 222, allowing the sensor 15 to capture more light and further enhancing the image quality displayed on the OLED display 22.

[0052] In the above embodiments, no settings are made to the rear through-hole 17, but this disclosure is not limited to this. A light-transmitting element can be set in the rear through-hole 17 to seal the camera module. However, this disclosure is not limited to this either; a camera can be installed in the rear through-hole 17 to form a rear camera. This disclosure is not limited to this either; a display panel can also be installed in the rear through-hole 17 to be used as a second display screen. Of course, this disclosure is not limited to this either; the entire back of the phone can be set as a display screen to achieve a full-screen display on the front and a full-screen display on the back.

[0053] The following is a detailed description of the full-screen holeless display method disclosed herein.

[0054] When the user activates camera module 1, camera module 1 transmits data information S1 to the phone's processor, and the processor transmits a corresponding signal S2 to the display module for display. Additionally, when the user activates camera module 1, camera module 1 sends a synchronization signal S3 to display module 2. This synchronization signal S3 can be a camera activation signal or a recording signal. In this disclosure, the synchronization signal can be an electrical signal or a digital signal, as long as it can transmit the information activating the camera module to the display module.

[0055] Display module 2 receives synchronization signal S3 from camera module 1 and controls whether the controllable area 222 displays or not. For example, the control can be performed in the following manner.

[0056] For example, when camera module 1 is activated, it sends a camera activation signal to display module 2. Upon receiving the signal, display module 2 controls the display of the controllable area 222, for example, by adjusting the refresh rate of the controllable area 222 according to a preset refresh rate, so that the controllable area 222 is displayed or not displayed to a degree imperceptible to the human eye. Camera module 1 can sample using a preset sampling rate, and the preset refresh rate can be matched with the preset sampling rate of camera module 1, thereby enabling alternating sampling by camera module 1 and refresh of the controllable area 222.

[0057] For example, when camera module 1 is taking a picture, camera module 1 sends the camera signal to display module 2. After receiving the camera signal, display module 2 controls the display of controllable area 222. For example, in some cases, the sampling rate of camera module 1 after startup and the sampling rate during shooting can be different. When taking a picture, a camera signal can be sent. Display module 2 can adjust the refresh rate of controllable area 222 according to another preset refresh rate that matches the sampling rate during shooting, so that controllable area 222 can be displayed or not displayed to a degree that is imperceptible to the human eye.

[0058] In one embodiment, the synchronization signal may include the sampling period of the camera module 1; after receiving the sampling period, the display module 2 adjusts the refresh rate of the controllable area 222 of the OLED display screen 22 corresponding to the camera module 1 according to a preset refresh rate. In this embodiment, the synchronization signal may include a sampling period, which represents the time during which the camera samples and does not sample, or the period of sampling rate change. The display module 2 adjusts the refresh rate of the controllable area 222 of the OLED display screen 22 according to the preset refresh rate based on the received sampling period.

[0059] In another embodiment, the synchronization signal may include the sampling period of the camera module 1 and information related to the sampling rate of the camera module 1. Based on the information related to the sampling rate of the camera module 1, a first refresh rate of the controllable area 222 of the OLED display 22 is determined, and the refresh rate of the controllable area 222 of the OLED display 22 is controlled according to the sampling period based on the first refresh rate. In this embodiment, the sampling period can be sent via the synchronization signal, and corresponding information related to the sampling rate can also be sent via the synchronization signal. Based on the sampling rate, a matching first refresh rate can be determined. The display module 2 can control the refresh rate of the controllable area 222 according to the sampling period and the determined first refresh rate, thereby achieving alternating sampling and refresh, displaying within the controllable area 222 of the OLED display 22 without affecting camera sampling.

[0060] For example, when the display frequency of display module 2 is 60Hz and the sampling rate of camera module 1 is 30Hz, after receiving synchronization signal 3, display module 2 can adjust its refresh rate to 30Hz, at which point the controllable area 222 displays for half the time. As another example, when synchronization signal 3 includes sampling rate-related information, display module 2 adjusts the refresh rate of controllable area 222 according to the received sampling rate, that is, adjusts the display time of controllable area 222.

[0061] In this embodiment, the synchronization signal 3 can also be set to a relatively high level, a low level, or both being edge signals. For example, when the synchronization signal 3 is low, the controllable area 222 displays; conversely, when the synchronization signal 3 is high, the controllable area 222 does not display.

[0062] Furthermore, when display module 2 receives a signal from camera module 1 to start shooting, display module 2 begins to control the display of the controllable area 222. For example, after camera module 1 starts up, while camera module 1 is sampling, display module 2 controls the controllable area 222 to not display, thus allowing light to enter camera module 1 through the controllable area 222. At this time, the controllable area 222 still displays relevant content, thus ensuring the full-screen display of the OLED display 22 while enabling front-end shooting. One method for display module 2 to control the controllable area 222 to not display is, for example, adjusting the refresh rate of the controllable area 222 in the area where camera module 1 is located in a way that is imperceptible to the naked eye.

[0063] Because of the high display frequency of the OLED display 22, and based on the persistence of vision of the human eye, the controllable area 222 can be controlled without the human eye perceiving any changes. The OLED display 222 displays complete content without any holes or black spots.

[0064] The synchronization signal S3 may include the sampling rate information of the camera module 1. Based on the refresh rate information of the OLED display 22 and the sampling rate information of the camera module 1, the display time and non-display time limit of the controllable area 222 of the OLED display 22 are controlled.

[0065] For example, when the refresh rate of the OLED display is 60Hz and the sampling rate of the camera module 1 is 30Hz, when the front shooting of the camera module 1 is started, that is, when the front camera is turned on, the controllable area 222 is displayed for half the time, that is, the refresh rate is 30Hz. When the controllable area 222 is displayed, the camera module does not sample; when the controllable area 222 is not displayed for the other half of the time, the camera module 1 samples.

[0066] Furthermore, in this embodiment, an isolating member 21 for preventing light leakage is provided below the OLED display screen 22, and the isolating member 21 is distributed around the front through hole 11. When the display module 2 switches between displaying and not displaying the controllable area 222, the isolating member 21 isolates the light, preventing further interference from the light to the display area or the non-display area.

[0067] It is understandable that the function of the isolator 21 is simply to block light. The isolator 21 can be a light shield, a reflector, an optical film, etc., and is not limited to these. It can be any component that can block light.

[0068] In this embodiment, the camera module 1 includes a front through-hole 11 and a sensor. The sensor converts the light signal transmitted from the controllable area 222 of the OLED display 22 into an electrical signal, and further into a digital signal. The sensor's pixels obtain raw data, which is then processed by a signal processor to restore the three primary colors. The digital image signal is optimized by a processing chip on the display module 2, and finally the processed signal is transmitted to the OLED display 22 to display the corresponding image.

[0069] Through the embodiments disclosed herein, the camera is perfectly hidden while achieving a full-screen, hole-free display. At the same time, by rotating the right-angle prism 14 in the camera module 1, light passing through the front and rear through holes can be captured separately. By sharing a sensor, the switching and sharing of front and rear cameras can be achieved.

[0070] Figure 3 This is a block diagram illustrating a full-screen display method according to an exemplary embodiment.

[0071] like Figure 3 As shown in the figure, a full-screen holeless display method provided in this disclosure includes: step S11, step S12 and step S13.

[0072] In step S11, when the front-facing camera is activated, the camera module sends a synchronization signal.

[0073] In step S12, the display module receives the synchronization signal emitted by the camera module.

[0074] In step S13, based on the synchronization signal, the display module controls whether to display or not display the controllable area of ​​the display screen corresponding to the front-facing camera. That is, it controls the display of the controllable area.

[0075] When the camera module 1 samples through the front through-hole 11, step S111 is executed, and the camera module 1 sends a first synchronization signal. When the camera module 1 does not sample, step S112 is executed, and the camera module 1 sends a second synchronization signal.

[0076] Based on a synchronization signal, the display module 2 controls whether the controllable area 222 of the OLED display screen 22 corresponds to the front through-hole 11 to display or not display. In step S13, when the first synchronization signal is received, the display module 2 controls the controllable area 222 to not display. When the second synchronization signal is received, the display module 2 controls the controllable area 222 to display.

[0077] For example, when the camera function is turned on, the controllable area 222 can display a certain proportion of time, while a certain proportion of time is not displayed.

[0078] For example, the refresh rate of display module 2 is set to 60Hz, and the sampling rate of camera module 1 is set to 30Hz. When the camera function is activated, the synchronization signal sent by camera module 1 is transmitted to display module 2, and display module 2 begins to control the display of the controllable area 222. That is, it controls the display time ratio of the controllable area 222 according to the ratio of the refresh rate of display module 2 to the sampling rate of camera module 1. During the period when camera module 1 is active, the controllable area 222 is displayed for half the time and not displayed for the other half. For example, if the refresh rate of display module 2 is adjusted to 30Hz, when the controllable area 222 is displaying, camera module 1 does not sample; when the controllable area 222 is not displaying, camera module 1 samples.

[0079] Furthermore, the first synchronization signal can be an edge signal or a first level signal; the second synchronization signal can be an edge signal or a second level signal. The first level signal has a higher level than the second level signal.

[0080] Thus, due to the high display frequency and the persistence of vision in the human eye, the human eye cannot perceive any changes in the controllable area. When the front-facing camera is activated, the display shows the content in full screen, without any visible perforation or black spots. A 90Hz or 120Hz display is preferred for its superior display quality.

[0081] A second aspect of this disclosure provides a full-screen display device, including a display module having a control unit, the display module receiving a synchronization signal from a camera module, and based on the synchronization signal, the control unit controlling the display of a controllable area of ​​the display screen corresponding to the camera module.

[0082] A third aspect of this disclosure provides a terminal, including: a camera module with a front aperture and a sensor; and a display module including an OLED display and a processing chip. The front aperture is disposed below the OLED display. When front-facing camera shooting is initiated, the camera module emits a synchronization signal. The display module receives the synchronization signal emitted by the camera module and, based on the synchronization signal, controls the display of a controllable area of ​​the OLED display corresponding to the front aperture.

[0083] It can be further understood that in this disclosure, "multiple" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0084] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0085] It is further understood that although operations are described in a specific order in the accompanying drawings in the embodiments of this disclosure, this should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all of the shown operations to be performed to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.

[0086] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0087] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A full-screen display method, characterized in that, The method comprises the following steps: When front face shooting is started, the camera module sends a synchronization signal; The display module receives the synchronization signal sent by the camera module, and controls the display of a controllable area of the display screen corresponding to the camera module based on the synchronization signal; The camera module comprises a front through hole, and the display module comprises an OLED display screen, and a separation piece for preventing light leakage is arranged around the front through hole and under the OLED display screen; The method further comprises the following steps: When the camera module is sampling, the camera module sends a first synchronization signal, and the display module does not display the controllable area; When the camera module is not sampling, the camera module sends a second synchronization signal, and the display module displays the controllable area; The synchronization signal comprises a sampling period and a sampling rate of the camera module; The first refresh rate of the controllable area of the display screen is determined based on the sampling rate of the camera module, and the refresh rate of the controllable area of the display screen is controlled according to the first refresh rate based on the sampling period.

2. The full-screen display method according to claim 1, wherein: The first synchronization signal is an edge signal or a first level signal; The second synchronization signal is an edge signal or a second level signal; The level of the first level signal is higher than that of the second level signal.

3. A full-screen display device, characterized by comprising: The method comprises the following steps: The camera module sends a synchronization signal when front face shooting is started; The display module has a control unit, receives the synchronization signal from the camera module, and controls the display of a controllable area of the display screen corresponding to the camera module based on the synchronization signal; The camera module comprises a front through hole, and the display module comprises an OLED display screen, and a separation piece for preventing light leakage is arranged around the front through hole and under the OLED display screen; When the camera module is sampling, the camera module sends a first synchronization signal, and the display module does not display the controllable area; When the camera module is not sampling, the camera module sends a second synchronization signal, and the display module displays the controllable area; The synchronization signal comprises a sampling period and a sampling rate of the camera module; The first refresh rate of the controllable area of the display screen is determined based on the sampling rate of the camera module, and the refresh rate of the controllable area of the display screen is controlled according to the first refresh rate based on the sampling period.

4. A full-screen display device, characterized by comprising: The method comprises the following steps: A processor; A memory for storing processor-executable instructions; The processor is configured to process the full-screen display method according to any one of claims 1 to 2.

5. A terminal, characterized by comprising: The method comprises the following steps: The camera module comprises a front through hole and a sensor; The display module comprises an OLED display screen and a processing chip, The front through hole is arranged under the OLED display screen; When front face shooting is started, the camera module sends a synchronization signal; ​ The display module receives the synchronization signal sent by the camera module, and controls the display of the controllable area of the OLED display screen corresponding to the front through hole based on the synchronization signal; Wherein, around the front through hole, an isolation piece for preventing light leakage is arranged under the OLED display screen; Wherein, when the camera module is sampling, the camera module sends a first synchronization signal, and the display module controls the controllable area not to display; When the camera module is not sampling, the camera module sends a second synchronization signal, and the display module controls the controllable area to display; Wherein, the synchronization signal includes a sampling period and a sampling rate of the camera module; Based on the sampling rate of the camera module, the first refresh rate of the controllable area of the display screen is determined, and the refresh rate of the controllable area of the display screen is controlled according to the first refresh rate according to the sampling period.

6. The terminal of claim 5, wherein The camera module further comprises a shell, a lens arranged in the shell, a right-angle prism, and a power device for controlling the rotation of the right-angle prism; The front through hole is arranged on the shell; A rear through hole is further arranged on the shell; The front through hole and the rear through hole are arranged opposite to the right-angle prism.

7. The terminal of claim 6, wherein The center positions of the sensor, the lens, and the right-angle prism are located on the same horizontal plane.

8. The terminal of claim 6, wherein The power device is a motor or a stepping motor.

9. The terminal of claim 6, wherein The right-angle prism can rotate around a horizontal axis parallel to the OLED display screen or a vertical axis perpendicular to the OLED display screen, or perform spherical rotation.

10. The terminal of claim 6, wherein The optical axis plane of the sensor, the lens, and the right-angle prism is perpendicular to the display surface of the OLED display screen.

11. The terminal of claim 5, wherein The isolation piece is any one of a light shielding plate, a light reflecting sheet, and an optical film.

12. The terminal of claim 5, wherein The camera module further comprises a Hall sensor for positioning and compensating the rotation position and angle of the right-angle prism.

13. The terminal of claim 5, wherein The front through hole of the camera module is arranged under the circuit sparse arrangement area or the pixel point interval distribution area on the OLED display screen.

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