WO2021238345A1

WO2021238345A1 - Viewing angle controllable module, viewing angle control method and electronic device

Info

Publication number: WO2021238345A1
Application number: PCT/CN2021/081050
Authority: WO
Inventors: 蒋臣迪; 孙增才
Original assignee: 华为技术有限公司
Priority date: 2020-05-27
Filing date: 2021-03-16
Publication date: 2021-12-02
Also published as: CN113741069B; CN113741069A

Abstract

A viewing angle controllable module, a display, an electronic device, a viewing angle control method, a storage medium and a program product. The viewing angle controllable module (195) comprises an upper electrode layer (1952), a lower electrode layer (1955), and a lens array layer (1953) and a liquid layer (1954) which are provided in a stacked manner between the upper electrode layer (1952) and the lower electrode layer (1955). The light incident on the module (195) exits the module (195) after passing through the liquid layer (1954) and the lens array layer (1953), and is refracted at the interface between the liquid layer (1954) and the lens array layer (1953); and when the voltage between the upper electrode layer (1952) and the lower electrode layer (1955) is different, the refractive index of the liquid layer (1954) is different, and the refracted light exits the module (195) in a different direction, achieving the adjustment of the viewing angle. Further provided are a display and an electronic device which have the module (195), a method for controlling the viewing angle of the display according to the voltage, a storage medium storing a program for implementing the method, and a program product for executing the method.

Description

Viewing angle controllable module, method for controlling viewing angle and electronic equipment

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on May 27, 2020, the application number is 202010459986.4, and the application name is "a module with a controllable view angle, a method for controlling the view angle, and an electronic device", and its entire contents Incorporated in this application by reference.

Technical field

This application relates to the field of electronic equipment, and more specifically, to a module with a controllable viewing angle, a method for controlling the viewing angle, and an electronic device.

Background technique

With the development of society, people pay more and more attention to personal privacy information. For example, when a user is using an electronic device, the content displayed on the display of the electronic device involves the private content of the individual user, and the user hopes that the private content of the individual user can not be peeped by others. Therefore, the user needs to be limited The viewing angle of the electronic device.

At present, it is possible to adjust the viewing angle of the electronic device by pasting a film with a louver structure on the display. After the above-mentioned louver structure film is manufactured, the distance between the blades in the louver structure film and the height of the blades are determined. Therefore, the louver structure film can only achieve one viewing angle adjustment, which limits the user to observe the display. Angle.

Summary of the invention

This application provides a module with a controllable viewing angle, a method for controlling the viewing angle, and an electronic device, which can adjust the viewing angle of part or all of the display area on the display interface of the electronic device according to the information displayed on the electronic device.

In a first aspect, a module with a controllable viewing angle is provided, comprising: an upper electrode layer and a lower electrode layer; a lens array layer arranged between the upper electrode layer and the lower electrode layer; The liquid layer between the electrode layer and the lens array layer; the light incident on the module passes through the liquid layer and the lens array layer and exits the module, and the light from the liquid layer is along the target direction It is incident on the interface between the liquid layer and the lens array layer and is refracted, the refractive index of the lens array layer is the target refractive index, and the voltage between the upper electrode layer and the lower electrode layer is the first In the case of voltage, the refractive index of the liquid layer is the first refractive index, and the refracted light passes through the lens array layer in the first direction, and the first refractive index and the target refractive index are different; In the case where the voltage between the upper electrode layer and the lower electrode layer is the second voltage, the refractive index of the liquid layer is the second refractive index, and the refracted light passes through the lens in the second direction Array layer, the second voltage is different from the first voltage, the second refractive index is different from the first refractive index, the second refractive index is different from the target refractive index, and the second direction It is different from the first direction.

In this application, the viewing angle controllable module includes an upper electrode layer, a lower electrode layer, a lens array layer arranged between the upper electrode layer and the lower electrode layer, and a liquid layer arranged between the lower electrode layer and the lens array layer. . The light incident to the module passes through the liquid layer and the lens array layer and exits the module. The incident light is refracted at the interface between the liquid layer and the lens array layer. The refractive index of the lens array layer is the target refractive index. When the voltage between the layers is the first voltage, the refractive index of the liquid layer is the first refractive index, and the refracted light exits the module in the first direction; the voltage between the upper electrode layer and the lower electrode layer is In the case of a second voltage different from the first voltage, the refractive index of the liquid layer is a second refractive index different from the first refractive index, and the refracted light exits the module in a second direction different from the first direction. Realize the adjustment of the viewing angle of the module with controllable viewing angle.

With reference to the first aspect, in a possible implementation manner, the lower electrode layer includes: a plurality of grooves, the plurality of grooves correspond to a plurality of lenses of the lens array layer in one-to-one correspondence, and the plurality of The groove is used to accommodate the liquid layer.

By arranging grooves corresponding to the multiple lenses one-to-one on the lower electrode layer, the grooves can contain the liquid of the liquid layer and realize the encapsulation of the liquid.

With reference to the first aspect, in a possible implementation manner, the lens array layer includes a convex lens.

With reference to the first aspect, in a possible implementation manner, the upper electrode layer includes: a plurality of grooves, and the plurality of grooves correspond to a plurality of lenses of the lens array layer in a one-to-one manner, and the plurality of The groove is used to accommodate the liquid layer.

By providing grooves corresponding to a plurality of lenses on the upper electrode layer, the grooves can contain the liquid of the liquid layer and realize the encapsulation of the liquid.

With reference to the first aspect, in a possible implementation manner, the lens array layer includes a concave lens.

With reference to the first aspect, in a possible implementation manner, the upper electrode layer further includes a plurality of electrodes, and the plurality of electrodes corresponds to the plurality of lenses in one-to-one correspondence, and/or, the lower electrode layer further includes It includes a plurality of electrodes, and the plurality of electrodes corresponds to the plurality of lenses one-to-one.

In the case where the upper electrode layer includes a plurality of electrodes, the voltage between the upper electrode layer and the lower electrode layer is the second voltage, which can be understood as part of the electrodes in the upper electrode layer and the lower electrode The voltage of the layer is the second voltage.

In the case where the lower electrode layer includes a plurality of electrodes, the voltage between the upper electrode layer and the lower electrode layer is the second voltage, which can be understood as a part of the upper electrode layer and the lower electrode layer The voltage of the electrode is the second voltage.

In the case where the upper electrode layer includes a plurality of electrodes and the lower electrode layer includes a plurality of electrodes, the voltage between the upper electrode layer and the lower electrode layer is the second voltage, which can be understood as the upper The voltage between part of the electrodes in the electrode layer and the electrodes in the lower electrode layer corresponding to the part of the electrodes in the upper electrode layer is the second voltage.

With reference to the first aspect, in a possible implementation manner, the module further includes: an upper substrate disposed above the upper electrode layer and a lower substrate disposed below the lower electrode layer.

The upper substrate is arranged above the upper electrode layer, and the lower substrate is arranged below the lower electrode layer, which can support and protect the module with controllable viewing angle strongly, and improve the reliability of the module with controllable viewing angle.

In a second aspect, a module with a controllable viewing angle is provided, comprising: an upper electrode layer and a lower electrode layer; a lens array layer arranged between the upper electrode layer and the lower electrode layer; The liquid layer between the electrode layer and the lens array layer; the light incident on the module passes through the lens array layer and the liquid layer, and then exits the module. The light from the lens array layer follows the target The direction is incident on the interface between the lens array layer and the liquid layer and refracted, the refractive index of the lens array layer is the target refractive index, and the voltage between the upper electrode layer and the lower electrode layer is the first In the case of three voltages, the refractive index of the liquid layer is the third refractive index, and the refracted light passes through the liquid layer in the third direction, and the third refractive index is different from the target refractive index; In the case where the voltage between the upper electrode layer and the lower electrode layer is the fourth voltage, the refractive index of the liquid layer is the fourth refractive index, and the refracted light passes through the liquid in the fourth direction Layer, the fourth voltage and the third voltage are different, the fourth refractive index and the third refractive index are different, the fourth refractive index and the target refractive index are different, and the fourth direction and The third direction is different.

In this application, the viewing angle controllable module includes an upper electrode layer, a lower electrode layer, a lens array layer arranged between the upper electrode layer and the lower electrode layer, and a liquid arranged between the upper electrode layer and the lens array layer. Floor. The light incident on the module passes through the lens array layer and the liquid layer and exits the module. The incident light is refracted at the interface between the lens array layer and the liquid layer. The refractive index of the lens array layer is the target refractive index. When the voltage between the layers is the third voltage, the refractive index of the liquid layer is the third refractive index, and the refracted light exits the module in the third direction; the voltage between the upper electrode layer and the lower electrode layer is In the case of a fourth voltage different from the third voltage, the refractive index of the liquid layer is a fourth refractive index different from the third refractive index, and the refracted light exits the module in a fourth direction different from the third direction. Realize the adjustment of the viewing angle of the module with controllable viewing angle.

With reference to the second aspect, in a possible implementation manner, the lower electrode layer includes: a plurality of grooves, and the plurality of grooves correspond to a plurality of lenses of the lens array layer in a one-to-one manner, and the plurality of The groove is used to accommodate the liquid layer.

With reference to the second aspect, in a possible implementation manner, the lens array layer includes a concave lens.

With reference to the second aspect, in a possible implementation manner, the upper electrode layer includes: a plurality of grooves, the plurality of grooves correspond to a plurality of lenses of the lens array layer in one-to-one correspondence, and the plurality of The groove is used to accommodate the liquid layer.

With reference to the second aspect, in a possible implementation manner, the lens array layer includes convex lenses.

With reference to the second aspect, in a possible implementation manner, the upper electrode layer further includes a plurality of electrodes, and the plurality of electrodes corresponds to the plurality of lenses in a one-to-one correspondence, and/or, the lower electrode layer further includes It includes a plurality of electrodes, and the plurality of electrodes corresponds to the plurality of lenses one-to-one.

With reference to the second aspect, in a possible implementation manner, the module further includes: an upper substrate disposed above the upper electrode layer and a lower substrate disposed below the lower electrode layer.

In a third aspect, a display is provided, including: a liquid crystal display panel, a module with a controllable viewing angle in any one of the first and second aspects described above, and any one of the first and second aspects. The liquid crystal display panel includes a display module and a backlight module, the display module includes a plurality of display units, and the plurality of display units correspond to the plurality of lenses in one-to-one correspondence; Between the display module and the backlight module, or the module with controllable viewing angle is arranged above the liquid crystal display panel, and the module with controllable viewing angle is used to adjust the visibility of the display angle.

In a fourth aspect, a method for controlling the viewing angle is provided, the method is applied to an electronic device, the electronic device includes the display in any one of the foregoing third aspect and the third aspect, and the method includes : Determine the first display area on the display interface of the electronic device whose viewing angle is to be adjusted; adjust the voltage between the first electrode and the second electrode corresponding to the first display area, so that the first display area The viewing angle of the first electrode changes, the first electrode is the electrode of the upper electrode layer, the second electrode is the electrode of the lower electrode layer, and the first electrode corresponds to the second electrode.

The first electrode may be one or more.

The second electrode may be one or more.

In this application, the display area whose viewing angle is to be adjusted is determined, and the voltage between the first electrode in the upper electrode layer and the second electrode of the lower electrode layer corresponding to the display area whose viewing angle is to be adjusted is adjusted. The first electrode corresponds to the second electrode, so as to adjust the viewing angle of the first display area.

With reference to the fourth aspect, in a possible implementation manner, the determining the first display area to be adjusted on the display interface of the electronic device includes: identifying information displayed on the display interface of the electronic device Type, the type of the displayed information includes privacy type and non-privacy type; in the case that the type of information displayed on the display interface of the electronic device includes privacy type information, the display interface of the electronic device corresponds to The display area is determined as the first display area.

Identify the type of information displayed on the display interface of the electronic device. When the type of information displayed on the display interface of the electronic device includes privacy type information, the display area corresponding to the entire display interface of the electronic device is determined as the first display Area, and adjust the voltage between the first electrode of the upper electrode layer and the second electrode of the lower electrode layer corresponding to the first display area, and the first electrode corresponds to the second electrode to realize the first display The adjustment of the viewing angle of the area realizes the adjustment of the viewing angle of all the display areas on the display interface of the electronic device.

With reference to the fourth aspect, in a possible implementation manner, the determining the first display area to be adjusted on the display interface of the electronic device includes: identifying information displayed on the display interface of the electronic device Type, the display interface of the electronic device includes at least one window, the type of displayed information includes privacy type and non-privacy type; the type of information displayed on the display interface of the electronic device includes privacy type information In this case, a display area corresponding to a window related to privacy-type information on the display interface of the electronic device is determined as the first display area.

Identify the type of information displayed on the display interface of the electronic device. When the type of information displayed on the display interface of the electronic device includes privacy-type information, the window of the display interface of the electronic device that involves privacy-type information corresponds to The display area is determined as the first display area, and the voltage between the first electrode in the upper electrode layer and the second electrode of the lower electrode layer corresponding to the first display area is adjusted. Correspondingly, the adjustment of the viewing angle of the first display area is realized, and the adjustment of the viewing angle of the display area involving privacy type information on the display interface of the electronic device is realized.

With reference to the fourth aspect, in a possible implementation manner, the determining a display area corresponding to a window related to privacy-type information on the display interface of the electronic device as the first display area includes: The position of the window of privacy type information determines the display area corresponding to the window of privacy type information.

Wherein, the position of the window related to privacy type information can be understood as the position of the window related to privacy type information on the display interface of the electronic device.

In one embodiment, determining the display area corresponding to the window related to the privacy type information according to the position of the window related to the privacy type information includes: according to the coordinates of the first vertex of the window related to the privacy type information, and the information related to the privacy type The length of the window and the width of the window related to privacy type information determine the display area corresponding to the window of privacy type information. The first vertex may be any vertex of the window related to privacy type information.

In another embodiment, determining a display area corresponding to a window involving privacy type information according to the position of a window involving privacy type information includes: determining a display area corresponding to a window involving privacy type information according to the position of a window involving privacy type information. The display area corresponding to the window may be a display area corresponding to the window involving privacy type information determined according to the coordinates of the four vertices of the window involving privacy type information. Wherein, the coordinates may be coordinates on the display interface of the electronic device.

With reference to the fourth aspect, in a possible implementation manner, the determining the first display area to be adjusted on the display interface of the electronic device includes: detecting a circle selection operation of a user's circle selection track; The circled area corresponding to the selection operation is determined as the first display area.

According to the circled area corresponding to the user circled operation, the display area corresponding to the circled area in the display interface of the electronic device is determined as the first display area, and the first electrode in the upper electrode layer corresponding to the first display area is adjusted And the voltage between the second electrode of the lower electrode layer, the first electrode corresponds to the second electrode, the adjustment of the viewing angle of the first display area is realized, and the display interface of the electronic device can be adjusted according to the needs of the user. Adjustment of the viewing angle of the display area.

With reference to the fourth aspect, in a possible implementation manner, in the case where the type of information displayed on the display interface of the electronic device includes privacy type information, the method further includes: adjusting the information corresponding to the second display area The voltage between the third electrode and the fourth electrode changes the viewing angle of the second display area. The third electrode is the electrode of the upper electrode layer, and the fourth electrode is the lower electrode. The electrode of the electrode layer, the third electrode corresponds to the fourth electrode, and the second display area is a display area on the display interface of the electronic device excluding the first display area.

The third electrode may be one or more.

The fourth electrode may be one or more.

With reference to the fourth aspect, in a possible implementation manner, the privacy-type information includes information related to privacy application programs, information related to privacy keywords, information related to privacy text, information related to privacy The information corresponding to the picture and/or the information corresponding to the private video.

In a fifth aspect, an electronic device is provided. The electronic device includes the first aspect and a module with a controllable viewing angle in any one of the first aspect.

In a sixth aspect, an electronic device is provided, and the electronic device includes the second aspect and any possible viewing angle controllable module of the second aspect.

In a seventh aspect, an electronic device is provided, including: the display of the third aspect; one or more processors; a memory; a plurality of application programs; and one or more programs, wherein the one or more programs Are stored in the memory, and when the one or more programs are executed by the processor, the electronic device is caused to perform the following steps: determine the first visual angle to be adjusted on the display interface of the electronic device Display area; adjusting the voltage between the first electrode and the second electrode corresponding to the first display area, so that the viewing angle of the first display area changes, the first electrode is the upper electrode layer The second electrode is an electrode of the lower electrode layer, and the first electrode corresponds to the second electrode.

With reference to the seventh aspect, in a possible implementation manner, when the one or more programs are executed by the processor, the electronic device is caused to perform the following steps: recognizing what is displayed on the display interface of the electronic device The type of information, the type of information displayed includes privacy type and non-privacy type; when the type of information displayed on the display interface of the electronic device includes privacy type information, the display interface of the electronic device The corresponding display area is determined as the first display area.

With reference to the seventh aspect, in a possible implementation manner, when the one or more programs are executed by the processor, the electronic device is caused to perform the following steps: recognizing what is displayed on the display interface of the electronic device The type of information, the display interface of the electronic device includes at least one window, the type of displayed information includes privacy type and non-privacy type; the type of information displayed on the display interface of the electronic device includes privacy type In the case of information, a display area corresponding to a window related to privacy-type information on the display interface of the electronic device is determined as the first display area.

With reference to the seventh aspect, in a possible implementation manner, when the one or more programs are executed by the processor, the electronic device is caused to perform the following steps: The location determines the display area corresponding to the window related to the privacy type information.

With reference to the seventh aspect, in a possible implementation manner, when the one or more programs are executed by the processor, the electronic device is caused to perform the following steps: detecting the circle selection operation of the user's circle selection track; The circled area corresponding to the circled track is determined as the first display area.

With reference to the seventh aspect, in a possible implementation manner, when the one or more programs are executed by the processor, the electronic device is caused to perform the following steps: adjusting the third electrode corresponding to the second display area The voltage between the second display area and the fourth electrode changes the viewing angle of the second display area. The third electrode is the electrode of the upper electrode layer, and the fourth electrode is the electrode of the lower electrode layer. The third electrode corresponds to the fourth electrode, and the second display area is a display area excluding the first display area on the display interface of the electronic device.

With reference to the seventh aspect, in a possible implementation manner, the privacy-type information includes information related to privacy application programs, information related to privacy keywords, information related to privacy text, and information related to privacy The information corresponding to the picture and/or the information corresponding to the private video.

In an eighth aspect, a computer-readable storage medium is provided, including computer instructions, which when the computer instructions run on an electronic device, cause the electronic device to perform any one of the foregoing fourth aspect and the fourth aspect. Realizing the method of controlling the angle of view.

In a ninth aspect, a computer program product is provided, which when the computer program product runs on a computer, causes the computer to execute the above-mentioned fourth aspect and the method of controlling the perspective in any one of the possible implementations of the fourth aspect .

In a tenth aspect, the present application provides a chip system, the chip system includes a memory and a processor, the memory is used to store computer instructions, and the processor is used to execute the computer instructions stored in the memory to execute the foregoing The fourth aspect and the method of controlling the angle of view in any one of the possible implementations of the fourth aspect.

Description of the drawings

Fig. 1 is a schematic structural diagram of an example of an electronic device provided by an embodiment of the present application.

Fig. 2 is a schematic diagram of the structure of an edge-lit backlight display.

Figure 3 is a schematic diagram of a graphical user interface displayed by the notebook computer when the user is using the notebook computer.

Fig. 4 is a schematic diagram of the structure of a film of a louver structure.

FIG. 5 is a schematic structural diagram of an example of a module with a controllable viewing angle provided by an embodiment of the present application.

FIG. 6 is a schematic structural diagram of another example of a module with a controllable viewing angle provided by an embodiment of the present application.

FIG. 7 is a schematic structural diagram of another example of a module with a controllable viewing angle provided by an embodiment of the present application.

FIG. 8 is a schematic structural diagram of another example of a module with a controllable viewing angle provided by an embodiment of the present application.

FIG. 9 is a schematic diagram of light paths in a module with a controllable viewing angle provided by an embodiment of the present application.

FIG. 10 is a schematic flowchart of a method for controlling a viewing angle provided by an embodiment of the present application.

FIG. 11 is a schematic diagram of an example of the visual angle change of the interface of a notebook computer provided by an embodiment of the present application.

FIG. 12 is a schematic diagram of another example of the visual angle change of the interface of a notebook computer according to an embodiment of the present application.

Detailed ways

The technical solution in this application will be described below in conjunction with the accompanying drawings.

In order to facilitate the understanding of the embodiments of the present application, before introducing the embodiments of the present application, the following descriptions are made.

First, in all the drawings in the embodiments of this application, the directions of the x-axis, y-axis, and z-axis are perpendicular to each other. The direction of the z-axis can be understood as the thickness direction of the terminal device, and the positive direction of the z-axis It is the direction from the rear shell of the terminal device to the screen of the terminal device; the direction of the x-axis can be understood as the length direction of the terminal device; the direction of the y-axis can be understood as the width direction of the terminal device.

Second, in the embodiments of the present application, the “above” or “below” refers to the positional relationship in the z-axis direction, and “above” refers to the positive direction along the z-axis, and “below” refers to the positional relationship along the z-axis. The negative direction of the z-axis.

Third, in the embodiments of the present application, the first, second, and various numerical numbers are only for easy distinction for description, and are not used to limit the scope of the embodiments of the present application. For example, distinguish different diffusion membranes and so on.

FIG. 1 shows a schematic diagram of the structure of an electronic device 100.

The electronic device 100 may be a mobile phone, a tablet computer, a desktop computer, a laptop computer, a handheld computer, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, a cellular phone, a personal digital assistant (personal digital assistant) digital assistant (PDA), augmented reality (AR) devices, virtual reality (VR) devices, artificial intelligence (AI) devices, wearable devices, in-vehicle devices, smart home devices and/or Smart city equipment, the embodiment of the application does not impose any special restrictions on the specific type of the electronic equipment.

The electronic device 100 may include a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (USB) interface 130, a charging management module 140, a power management module 141, a battery 142, an antenna 1, and an antenna 2. , Mobile communication module 150, wireless communication module 160, audio module 170, speaker 170A, receiver 170B, microphone 170C, earphone jack 170D, sensor module 180, buttons 190, motor 191, indicator 192, camera 193, display screen 194, and Subscriber identification module (subscriber identification module, SIM) card interface 195, etc. The sensor module 180 may include a pressure sensor 180A, a gyroscope sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity light sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, and ambient light Sensor 180L, bone conduction sensor 180M, etc.

It can be understood that the structure illustrated in the embodiment of the present invention does not constitute a specific limitation on the electronic device 100. In other embodiments of the present application, the electronic device 100 may include more or fewer components than shown, or combine certain components, or split certain components, or arrange different components. The illustrated components can be implemented in hardware, software, or a combination of software and hardware.

The processor 110 may include one or more processing units. For example, the processor 110 may include an application processor (AP), a modem processor, a graphics processing unit (GPU), and an image signal processor. (image signal processor, ISP), controller, video codec, digital signal processor (digital signal processor, DSP), baseband processor, and/or neural-network processing unit (NPU), etc. Among them, the different processing units may be independent devices or integrated in one or more processors.

The controller can generate operation control signals according to the instruction operation code and timing signals to complete the control of fetching and executing instructions.

A memory may also be provided in the processor 110 to store instructions and data. In some embodiments, the memory in the processor 110 is a cache memory. The memory can store instructions or data that have just been used or recycled by the processor 110. If the processor 110 needs to use the instruction or data again, it can be directly called from the memory. Repeated accesses are avoided, the waiting time of the processor 110 is reduced, and the efficiency of the system is improved.

In some embodiments, the processor 110 may include one or more interfaces. Interfaces can include integrated circuit (I2C) interfaces, integrated circuit built-in audio (inter-integrated circuit sound, I2S) interfaces, pulse code modulation (PCM) interfaces, universal asynchronous transmitters and receivers (universal asynchronous transmitters). receiver/transmitter, UART) interface, mobile industry processor interface (MIPI), general-purpose input/output (GPIO) interface, subscriber identity module (SIM) interface, and / Or Universal Serial Bus (USB) interface, etc.

The I2C interface is a bidirectional synchronous serial bus, which includes a serial data line (SDA) and a serial clock line (SCL). In some embodiments, the processor 110 may include multiple sets of I2C buses. The processor 110 may couple the touch sensor 180K, charger, flash, camera 193, etc., respectively through different I2C bus interfaces. For example, the processor 110 may couple the touch sensor 180K through an I2C interface, so that the processor 110 and the touch sensor 180K communicate through the I2C bus interface to implement the touch function of the electronic device 100.

The I2S interface can be used for audio communication. The PCM interface can also be used for audio communication to sample, quantize and encode analog signals. The UART interface is a universal serial data bus used for asynchronous communication. The bus can be a two-way communication bus. It converts the data to be transmitted between serial communication and parallel communication. The MIPI interface can be used to connect the processor 110 with the display screen 194, the camera 193 and other peripheral devices. The MIPI interface includes camera serial interface (camera serial interface, CSI), display serial interface (display serial interface, DSI), etc. The GPIO interface can be configured through software. The GPIO interface can be configured as a control signal or as a data signal. The USB interface 130 may be used to connect to other electronic devices, for example, a PC or the like may be connected through the USB interface.

It can be understood that the interface connection relationship between the modules illustrated in the embodiment of the present invention is merely a schematic description, and does not constitute a structural limitation of the electronic device 100. In other embodiments of the present application, the electronic device 100 may also adopt different interface connection modes in the foregoing embodiments, or a combination of multiple interface connection modes.

The charging management module 140 is used to receive charging input from the charger.

The power management module 141 is used to connect the battery 142, the charging management module 140 and the processor 110.

The wireless communication function of the electronic device 100 can be implemented by the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, the modem processor, and the baseband processor.

The antenna 1 and the antenna 2 are used to transmit and receive electromagnetic wave signals. Each antenna in the electronic device 100 can be used to cover a single or multiple communication frequency bands. Different antennas can also be reused to improve antenna utilization. For example, antenna 1 can be multiplexed as a diversity antenna of a wireless local area network. In other embodiments, the antenna can be used in combination with a tuning switch.

The mobile communication module 150 may provide a wireless communication solution including 2G/3G/4G/5G and the like applied to the electronic device 100.

The wireless communication module 160 can provide applications on the electronic device 100 including wireless local area networks (WLAN) (such as wireless fidelity (Wi-Fi) networks), bluetooth (BT), and global navigation satellites. System (global navigation satellite system, GNSS), frequency modulation (frequency modulation, FM), near field communication technology (near field communication, NFC), infrared technology (infrared, IR) and other wireless communication solutions. The wireless communication module 160 may be one or more devices integrating at least one communication processing module. The wireless communication module 160 receives electromagnetic waves via the antenna 2, frequency modulates and filters the electromagnetic wave signals, and sends the processed signals to the processor 110. The wireless communication module 160 may also receive a signal to be sent from the processor 110, perform frequency modulation, amplify it, and convert it into electromagnetic waves to radiate through the antenna 2.

The electronic device 100 implements a display function through a GPU, a display screen 194, an application processor, and the like. The GPU is a microprocessor for image processing, connected to the display 194 and the application processor. The GPU is used to perform mathematical and geometric calculations and is used for graphics rendering. The processor 110 may include one or more GPUs that execute program instructions to generate or change display information.

The display screen 194 is used to display images, videos, and the like. The display screen 194 includes a display panel. The display panel can adopt liquid crystal display (LCD), organic light-emitting diode (OLED), active matrix organic light-emitting diode or active-matrix organic light-emitting diode (active-matrix organic light-emitting diode). AMOLED, flexible light-emitting diode (FLED), Miniled, MicroLed, Micro-oLed, quantum dot light-emitting diode (QLED), etc. In some embodiments, the electronic device 100 may include one or N display screens 194, and N is a positive integer greater than one.

The electronic device 100 can realize a shooting function through an ISP, a camera 193, a video codec, a GPU, a display screen 194, and an application processor. Among them, the ISP is used to process the data fed back by the camera 193. The camera 193 is used to capture still images or videos. The object generates an optical image through the lens and is projected to the photosensitive element.

The external memory interface 120 may be used to connect an external memory card, such as a Micro SD card, to expand the storage capacity of the electronic device 100. The external memory card communicates with the processor 110 through the external memory interface 120 to realize the data storage function. For example, save music, video and other files in an external memory card. The internal memory 121 may be used to store computer executable program code, where the executable program code includes instructions. The internal memory 121 may include a storage program area and a storage data area. Among them, the storage program area can store an operating system, at least one application program (such as a sound playback function, an image playback function, etc.) required by at least one function. The data storage area can store data (such as audio data, phone book, etc.) created during the use of the electronic device 100.

The electronic device 100 can implement audio functions through the audio module 170, the speaker 170A, the receiver 170B, the microphone 170C, the earphone interface 170D, and the application processor. For example, music playback, recording, etc.

The audio module 170 is used to convert digital audio information into an analog audio signal for output, and is also used to convert an analog audio input into a digital audio signal. The audio module 170 can also be used to encode and decode audio signals. The speaker 170A, also called "speaker", is used to convert audio electrical signals into sound signals. The receiver 170B, also called a "handset", is used to convert audio electrical signals into sound signals. The microphone 170C, also called "microphone", "microphone", is used to convert sound signals into electrical signals.

The pressure sensor 180A is used to sense the pressure signal and can convert the pressure signal into an electrical signal. The gyro sensor 180B may be used to determine the movement posture of the electronic device 100. The air pressure sensor 180C is used to measure air pressure. The magnetic sensor 180D includes a Hall sensor. The acceleration sensor 180E can detect the magnitude of the acceleration of the electronic device 100 in various directions (generally three axes). Distance sensor 180F, used to measure distance. The electronic device 100 can use the proximity light sensor 180G to detect that the user holds the electronic device 100 close to the ear to talk, so as to automatically turn off the screen to save power. The proximity light sensor 180G can also be used in leather case mode, and the pocket mode will automatically unlock and lock the screen. The ambient light sensor 180L is used to sense the brightness of the ambient light. The fingerprint sensor 180H is used to collect fingerprints. The temperature sensor 180J is used to detect temperature. Touch sensor 180K, also called "touch device". The touch sensor 180K may be provided on the display screen 194, and the touch screen is composed of the touch sensor 180K and the display screen 194, which is also called a “touch screen”. The touch sensor 180K is used to detect touch operations acting on or near it. The touch sensor can pass the detected touch operation to the application processor to determine the type of touch event. The visual output related to the touch operation can be provided through the display screen 194. In other embodiments, the touch sensor 180K may also be disposed on the surface of the electronic device 100, which is different from the position of the display screen 194. The bone conduction sensor 180M can acquire vibration signals.

The button 190 includes a power-on button, a volume button, and so on. The button 190 may be a mechanical button. It can also be a touch button. The electronic device 100 may receive key input, and generate key signal input related to user settings and function control of the electronic device 100. The motor 191 can generate vibration prompts. The motor 191 can be used for incoming call vibration notification, and can also be used for touch vibration feedback. The indicator 192 may be an indicator light, which may be used to indicate the charging status, power change, or to indicate messages, missed calls, notifications, and so on. The SIM card interface 195 is used to connect to the SIM card. The SIM card can be inserted into the SIM card interface 195 or pulled out from the SIM card interface 195 to achieve contact and separation with the electronic device 100.

When the display panel included in the above-mentioned display screen 194 adopts an LCD, since the liquid crystal is a passive light-emitting device, a light source needs to be arranged on its back. The LCD displays different brightness by controlling the light transmittance. This light source is called a backlight light source. (Backlight). There are three main types of backlight sources: cold cathode fluorescent lamp (CCFL), electroluminescent (EL), and light emitting diode (LED). Compared with CCFL and EL, LED backlight has the characteristics of good light uniformity, wide color gamut coverage, high contrast, high brightness, not afraid of low temperature, strong adaptability, good reliability and no mercury pollution, so LED backlight is currently LCD The mainstream light source of the backlight module. According to the different distribution positions of the LED backlight light source, LCDs can be divided into two types: side-lit backlit LCD and direct-lit backlit LCD.

In the embodiments of the present application, the LCD of the electronic device may be an edge-type backlight LCD or a direct-type backlight LCD. LCD generally includes a backlight module and a display module. Among them, the display module is arranged above the backlight module, the light source is arranged on the side of the backlight module in the edge-type backlight LCD, and the light source is arranged on the backlight module in the direct-type backlight LCD Below. In the following, an edge-lit backlight LCD is taken as an example for description.

As shown in Figure 2, it is a schematic diagram of the side-lit backlit LCD 1941 structure. The edge-lit backlight LCD 1941 includes a display module 19411, a backlight module 19412, and a backlight light source 19413. The display module 19411 is above the backlight module 19412, and the backlight light source 19413 is on the side of the backlight module 19412.

Wherein, from top to bottom, the backlight module 19412 includes an upper diffusion film 194121, a brightness enhancement film 194122, a lower diffusion film 194123, a light guide plate 194124, and a light reflecting layer 194125 in sequence.

The reflective layer 194125 can also be called a reflective sheet, which is a layer of specular reflective film, whose main function is to reflect the light exposed at the bottom back into the light guide plate 194124 to improve the utilization rate of light.

The light guide plate 194124 is generally composed of a substrate and a diffusion film, where the substrate can be made of polymethyl methacrylate (PMMA) pressed into a smooth plate; the diffusion film is generally screen printed or injection molded on the surface of the substrate The method is densely covered with a layer of tiny bumps 1941241. The diffusion film is generally a highly reflective and non-light-absorbing material, such as silicon dioxide (SiO ₂ ) or titanium dioxide (TiO ₂ ).

The upper diffuser film 194123 and the lower diffuser film 194121 can also be called diffusers. The main function of the upper diffuser film 194123 and the lower diffuser film 194121 is to allow light to pass through the diffuser coating to produce diffuse reflection, so that the light distribution is more uniform, so that it can be seen from the front. Less than the shadow of the reflection point. The upper diffusion film 194123 and the lower diffusion film 194121 can also be composed of a substrate and a diffuse reflection coating. The substrate generally can be made of polyethylene terephthalate (PET) or PMMA with extremely high light transmittance. become.

Brightness-enhancing film 194122 is covered with special prism structures on the surface. These prism structures can correct the direction of light travel, and recycle the unused light outside the viewing angle to achieve the function of gathering light and improve the front of the LCD. brightness.

Among them, from top to bottom, the display module 19411 includes an upper polarizer 194111, an upper substrate 194112, a color filter 194113, an upper electrode layer 194114, a liquid crystal layer 194115, a lower electrode layer 194116, a lower substrate 194117, and a lower polarizer. Light 194118. The upper substrate 194112 and the lower substrate 194117 may function as support and protection.

The above-mentioned LCD 1941 can achieve partition dimming, that is, the backlight module 19412 is divided into several areas, and the backlight brightness of each area can be independently controlled, so that each pixel corresponds to an LED light source to provide the LCD 1941 with backlight brightness.

The above-mentioned LCD 1941 realizes image display by controlling the state of polarized light through electrical signals. The display module 19411 in the LCD can be regarded as a sandwich structure. That is, a liquid crystal layer 194115 is sandwiched between two polarizers (upper polarizer 194111 and lower polarizer 194118) whose polarization directions are perpendicular to each other. The rotation of the liquid crystal in the liquid crystal layer 194115 can be controlled under the action of an external electric field. In practical applications, through the switching function of thin film transistors (TFTs), data signal voltages of different magnitudes are input to each pixel; The degree of rotation is also different, resulting in different components on the transmission axis of the upper polarizer 194111, that is, the brightness of the emitted light is different. In this way, LCD can realize multi-gray-scale picture display. If a color filter 194114 is added to each pixel, a color image can be displayed.

With the development of society, people pay more and more attention to personal privacy information. For example, when a user is using an electronic device using the above-mentioned LCD 1941, the content displayed on the display of the electronic device will involve private content, and the user hopes that the private content can not be peeped by others. Therefore, the user needs an electronic device With controllable viewing angle function. Wherein, the viewing angle can be understood as the angle at which the user can clearly observe the content displayed on the display of the electronic device from different directions. The viewing angle may include a wide viewing angle and a narrow viewing angle, where the wide viewing angle may be 150 degrees (horizontal)/120 degrees (vertical), and the narrow viewing angle may be 120 degrees (horizontal)/100 degrees (vertical).

In the embodiment of the present application, the electronic device 100 is a notebook computer as an example for description.

For example, as shown in (a) in FIG. 3, it is a schematic diagram of a user using a notebook computer 430. Among them, the user 410 is the owner of the laptop 430, and the bystander 420 is a person watching the laptop 430. At this time, when the user 410 uses the notebook computer 430, two windows are opened on the interface 433 of the notebook computer 430, namely, the window 431 and the window 432. Among them, the window 431 is a bank application (application, APP) window, and the window 432 is an entertainment APP window. As shown in (b) of FIG. 3, it is a schematic view of the viewing angle of the notebook computer 430. In Figure 3(b), θ _c is the viewing angle of the notebook computer, the A1 area is the area corresponding to the viewing angle of the notebook computer, and the A2 area and A3 area are the areas corresponding to the non-viewing angle of the notebook computer. As shown in (c) in FIG. 3, it is a schematic diagram of the wide viewing angle and the narrow viewing angle of the notebook computer 430. In FIG. 3 (c),, θ _cmax laptop 430 wide viewing angle, θ _cmin narrow viewing angle 430 of the laptop. As shown in FIG. 3, in the window 431 displayed on the interface 433 of the notebook computer 430, the displayed content involves private content, and the user 410 does not want bystanders 420 to see the above private content.

Currently, the user can control the viewing angle of the electronic device 100 by pasting a film with a louver structure on the corresponding display. For example, as shown in Figure 4, it is a film with a shutter structure. The height of the blades in the film is h and the width between the blades is d. However, when the film of the above-mentioned louver structure is manufactured, the distance d between the blades in the film of the louver structure and the height h of the blades are determined, and the visible angle of the film of the louver structure is θ, and the visible The angle θ will not change any more, therefore, the above-mentioned louver structure film can only achieve one viewing angle adjustment. For example, in order to prevent bystanders 420 from peeping into privacy-related content on the laptop 430, the user 410 pastes a corresponding louver structure film on the display of the laptop 430 to control the viewing angle of the laptop 430, so that the bystander 420 is in At the position shown in FIG. 3, any content displayed on the interface of the notebook computer 430 will not be visible. Therefore, the viewing angle of the electronic device 100 cannot be flexibly controlled according to the needs of the user, resulting in a poor user experience.

Therefore, the present application provides a module 195 with a controllable viewing angle. The module 195 with a controllable viewing angle can be arranged between the display module and the backlight module of the display screen 194, or the module with controllable viewing angle The group 195 may be arranged above the display module of the display 194. The viewing angle controllable module 195 can flexibly monitor the visual angle of the content presented locally or the entire content presented in the display interface of the display screen 194 without affecting the light transmittance of the display screen 194. Adjusting the angle can meet the needs of users and improve user experience.

The module 195 with controllable viewing angle provided by the embodiment of the present application will be described in detail below in conjunction with specific drawings.

As shown in FIGS. 5 to 8, there are four structural schematic diagrams of the module 195 with a controllable viewing angle.

The viewing angle controllable module 195 includes an upper substrate 1951, an upper electrode layer 1952, a lens array layer 1953, a liquid layer 1954, a lower electrode layer 1955, and a lower substrate 1956. Among them, an upper electrode layer 1952 is provided between the upper substrate 1951 and the lower substrate 1956, the lower electrode layer 1955 is provided on the side of the lower substrate 1956 close to the upper electrode layer 1952, and the lens array layer 1953 and the liquid layer 1954 are arranged in a stacked manner. Between the upper electrode layer 1952 and the lower electrode layer 1955, the liquid layer 1954 is the lens array layer 1953.

In an achievable way, the aforementioned lens array layer 1953 is disposed above the liquid layer 1954. For example, the module 195 with controllable viewing angle shown in FIGS. 5 and 7, from top to bottom, the module 195 with controllable viewing angle includes an upper substrate 1951, an upper electrode layer 1952, a lens array layer 1953, and a liquid layer 1954. , The lower electrode layer 1955, and the lower substrate 1956.

In another achievable manner, the aforementioned lens array layer 1953 is disposed under the liquid layer 1954. For example, as shown in FIG. 6 and FIG. 8, the viewing angle controllable module 195, from top to bottom, the viewing angle controllable module 195 includes a lower substrate 1956, a lower electrode layer 1955, a liquid layer 1954, and a lens array layer. 1953, an upper electrode layer 1952, an upper substrate 1951.

The above-mentioned upper substrate 1951 and the above-mentioned lower substrate 1956 play a supporting and protecting role, which improves the reliability of the module 195 with a controllable viewing angle.

The multiple lenses of the lens array layer 1953 correspond to the multiple display units included in the display screen 194 in a one-to-one correspondence. Wherein, the display unit of the display screen 194 can be understood as the pixel unit of the display screen 194. The one-to-one correspondence between the multiple lenses of the lens array layer 1953 and the multiple display units included in the display screen 194 can be understood as one lens corresponding to one display unit; or, the multiple lenses of the lens array layer 1953 and the multiple displays included in the display screen 194 One-to-one correspondence of units can also be understood as one lens corresponding to multiple display units; or, one-to-one correspondence between multiple lenses of the lens array layer 1953 and multiple display units included in the display screen 194 can be understood as multiple lenses corresponding to one display unit.

In some embodiments, the lenses in the lens array layer 1953 are all convex lenses. As shown in FIGS. 5 and 6, the lens in the lens array layer 1953 is a convex lens 19531. In other embodiments, the lenses in the lens array layer 1953 are all concave lenses. As shown in FIGS. 7 and 8, the lens in the lens array layer 1953 is a concave lens 19532. In still other embodiments, the lenses in the lens array layer 1953 include convex lenses and concave-convex lenses. The present application does not limit the number of convex lenses in the lens array layer 1953. This application also does not limit the number of concave lenses in the lens array layer 1953.

Exemplarily, the material of the aforementioned lens array layer 1953 may be BK7 glass, K9 glass, SF11 glass, and the like.

The upper electrode layer 1952 includes patterned electrodes (pads) 19521, and each electrode 19521 of the upper electrode layer 1952 corresponds to the lens array layer 1953 on a one-to-one basis. The patterned electrodes can be understood as a plurality of electrodes arranged in a tile. Every two adjacent electrodes in the plurality of electrodes are arranged at intervals or without intervals. The upper electrode layer 1952 may be made of indium tin oxide (ITO) lens electrode material.

In some embodiments, as shown in FIGS. 7 and 8, a plurality of grooves corresponding to the plurality of lenses of the lens array layer 1953 are provided on the upper electrode layer 1952, and each groove is used to contain the above-mentioned liquid. Layer 1954 liquid. Each groove can be obtained by etching, and each groove can support the liquid layer 1954. And each recessed portion of the lens array layer 1953 contains part of the liquid in the above-mentioned liquid layer 1954.

The lower electrode layer 1955 may also include patterned electrodes, and each electrode of the lower electrode layer 1955 corresponds to each electrode 19521 of the upper electrode layer 1952 in a one-to-one correspondence. The lower electrode layer 1955 can also be made of indium tin oxide (ITO) lens electrode material.

In other embodiments, as shown in FIGS. 5 and 6, a plurality of grooves corresponding to the plurality of lenses of the lens array layer 1953 are provided on the lower electrode layer 1955, and each groove is used to contain the above-mentioned liquid. Layer 1954 liquid. Each groove can be obtained by etching, and each groove can support the liquid layer 1954. In addition, each groove on the lower electrode layer 1955 is also used to accommodate each convex portion of the convex lens 19531 in the lens array layer 1953.

The present application does not limit the shape of the groove of the upper electrode layer 1952. The application does not limit the shape of the groove of the lower electrode layer 1953.

The patterned electrodes described above can be obtained through a semiconductor photolithography process.

When the upper electrode layer 1952 and the lower electrode layer 1955 are energized, an electric field is formed between the upper electrode layer 1952 and the lower electrode layer 1955.

The refractive index of the liquid of the liquid layer 1954 changes with the voltage. Wherein, the voltage refers to the voltage between the upper electrode layer 1952 and the lower electrode layer 1955. In an achievable manner, the adjustment of the voltage between the upper electrode layer 1952 and the lower electrode layer 1955 may be to fix the voltage value of the lower electrode layer 1955 unchanged, and adjust the voltage value of the upper electrode layer 1952. In another achievable manner, the adjustment of the magnitude of the voltage between the upper electrode layer 1952 and the lower electrode layer 1955 may be to adjust the voltage value of the upper electrode layer 1952 and the voltage value of the lower electrode layer 1955 respectively, and only need to ensure The voltage difference between the upper electrode layer 1952 and the lower electrode layer 1955 can be changed.

This application does not limit the type of liquid in the liquid layer 1954. For example, the liquid layer 1954 may be liquid crystal.

The application does not limit the relationship between the refractive index of the liquid in the liquid layer 1954 and the voltage. For example, the refractive index and voltage of the liquid of the liquid layer 1954 may be in a linear relationship or a quadratic relationship.

Exemplarily, the components in the above-mentioned controllable viewing angle module 195 may be connected by bonding or gluing.

The path diagram of the module 195 with controllable light entering and exiting the viewing angle will be described below with reference to FIG. 9. As shown in FIG. 9, it is a schematic diagram of a partial path of light in the module 195 with a controllable viewing angle. As shown in (a) of FIG. 9, it is a schematic diagram of a partial path of light corresponding to the module 195 with a controllable viewing angle corresponding to FIG. 5. As shown in (b) of FIG. 9, it is a schematic diagram of a partial path of light corresponding to the module 195 with a controllable viewing angle corresponding to FIG. 6. As shown in (c) of FIG. 9, it is a schematic diagram of a partial path of light corresponding to the module 195 with a controllable viewing angle corresponding to FIG. 7. As shown in (d) of FIG. 9, it is a schematic diagram of a partial path of light corresponding to the module 195 with a controllable viewing angle corresponding to FIG. 8.

As shown in (a) in FIG. 9 and (c) in FIG. 9, the light incident on the module 195 with controllable viewing angle passes through the liquid layer 1954 and the lens array layer 1953, respectively, and emits the module with controllable viewing angle. In group 195, the light from the liquid 1954 layer is incident on the interface between the liquid layer 1954 and the lens array layer 1953 along the target direction and is refracted. Since the light from the liquid 1954 layer enters the interface between the liquid layer 1954 and the lens array layer 1953 in the target direction and is refracted, that is, the light from the liquid 1954 layer enters the lens array layer 1953 from the liquid layer 1954 to satisfy the law of refraction.

As shown in (b) in FIG. 9 and (d) in FIG. 9, the light incident on the module 195 with controllable viewing angle passes through the lens array layer 1953 and the liquid layer 1954, respectively, and emits the module with controllable viewing angle. In group 195, the light from the lens array layer 1953 is incident on the interface between the lens array layer 1953 and the liquid layer 1954 along the target direction and is refracted. Since the light from the lens array layer 1953 enters the interface between the lens array layer 1953 and the liquid layer 1954 in the target direction and is refracted, that is, the light from the lens array layer 1953 enters the liquid layer 1954 from the lens array layer 1953 to satisfy the law of refraction.

Hereinafter, a detailed description will be given by taking the partial path of the light as shown in (a) of FIG. 9 as an example.

As shown in (a) in Figure 9, α is the angle between the incident light and the normal of the lens, that is, the angle of incidence; β is the refraction angle, that is, the angle of refraction at which the incident light is refracted by the lens; the viewing angle is θ; n _L is the refractive index of the lens, r is the radius of curvature of the lens, f is the focal length of the lens; n is the refractive index of the liquid.

According to the law of refraction n×sinα=n _L ×sinβ, we can get:

From the law of sines, we can get:

According to the focal length formula of the optical lens, we can get:

According to formula (1), formula (2) and formula (3), we can get:

According to formula (4), if the material of the lens in the lens array layer 1953 is determined, that is, the refractive index n _L of the lens in the lens array layer 1953 is determined, when the incident angle α is determined, when the upper electrode is adjusted When the voltage between the layer 1952 and the lower electrode layer 1955, the refractive index of the liquid layer 1954 changes with the voltage between the upper electrode layer 1952 and the lower electrode layer 1955, so that the refraction angle n of the liquid layer 1954 changes , The corresponding viewing angle θ will also change.

According to formula (3), when the material of the lens array layer 1953 and the parameters of the lens array layer 1953 are determined, that is, the refractive index n _L of the lens in the lens array layer 1953 and the radius of curvature r of the lens are determined . When the voltage between the upper electrode layer 1952 and the lower electrode layer 1955 is adjusted, the refractive index of the liquid layer 1954 will change with the change of the voltage between the upper electrode layer 1952 and the lower electrode layer 1955, so that the refraction of the liquid layer 1954 When the rate n changes, the focal length f of the corresponding lens changes.

Adjusted so that when the refractive index n of the liquid layer 1954 is _{equal to the refraction angle n L of the} lens, the focal length f of the lens is infinite, that is, the lens and the liquid layer 1954 form a flat plate as a whole. At this time, there are 195 pairs of modules with controllable viewing angles. The light incident on the display 194 is not adjusted.

In an achievable manner, the upper lens array layer 1953 and the liquid layer 1954 are regarded as a whole, and the above-mentioned controllable viewing angle module 195 may include a whole composed of a multilayer lens array layer 1953 and a liquid layer 1954.

Above, the module 195 with controllable viewing angle provided by the present application is described in detail with reference to FIGS. 1 to 9. The method for controlling the viewing angle provided by the present application will be described in detail below in conjunction with FIG. 10.

As shown in FIG. 10, it is a method 200 for controlling the viewing angle provided by the present application. The display method 200 includes step 210 to step 270.

Step 210: Obtain information displayed on the first interface of the electronic device, where the visual angle of the first interface is the first visual angle.

The above-mentioned first interface is the display interface of the electronic device. For example, as shown in (a) of FIG. 4, the first interface is the interface 433 of the notebook computer 430.

In some embodiments, the display interface of the electronic device may include one or more APP icons. For example, the display interface of the electronic device may be the desktop of the electronic device. In other embodiments, the display interface of the electronic device may include one or more windows. Among them, the window can be understood as the window of a certain APP opened. In still other embodiments, the display interface of the electronic device may include one or more APP icons and one or more windows.

The above-mentioned visual angle of the first interface is the first visual angle, which can be understood as the user can clearly view all content displayed on the first interface of the electronic device within the first visual angle.

The above-mentioned first viewing angle may be the default display viewing angle of the electronic device. For example, when the aforementioned electronic device is a mobile phone, the first viewing angle may be 130 degrees. For another example, when the above-mentioned electronic device is a notebook computer, the first viewing angle may be 140 degrees.

Step 220: Identify the type of information displayed on the first interface.

In some embodiments, the type of information displayed on the first interface may include a privacy type. In other embodiments, the type of information displayed on the first interface includes a non-private type. In still other embodiments, the type of information displayed on the first interface includes a private type and a non-private type.

Among them, the privacy type information can be understood as that the information is private to the user and cannot be shared with others. Non-private types of information can be understood as the information that can be shared with others for the user.

Among them, the privacy type information can be customized by the system of the electronic device, or customized by the user.

Exemplarily, the private information may include at least one of the following: APPs related to private information, keywords related to private information, and customized private information.

Exemplarily, the aforementioned APP involving private information may be banking software, stock software, fund software, chat software, and the like.

Exemplarily, the above-mentioned keywords related to private information may be phone numbers, account numbers, documents with the word "confidential", and the like.

Exemplarily, the customized private information may be text, picture, video, etc.

Step 230: Determine whether the type of information displayed on the first interface includes privacy type information.

In some embodiments, the aforementioned electronic device 100 may include a privacy authority controller that recognizes the type of information displayed on the first interface of the electronic device 100, and the type of information displayed on the first interface includes privacy. In the case of the type of information, the privacy authority controller sends a corresponding instruction to the processor. Thus, the processor adjusts the viewing angle of the electronic device.

In other embodiments, the processor of the aforementioned electronic device 100 can recognize the type of information displayed on the first interface of the electronic device 100, and adjust the viewing angle of the electronic device.

In the following embodiments of the present application, the privacy authority controller sends corresponding instructions to the processor, so that the processor adjusts the viewing angle of the electronic device as an example for description.

Optionally, when the type of information displayed on the first interface does not include privacy-type information, the viewing angle of the display area corresponding to the first interface is increased or the display area corresponding to the first interface is not adjusted. Viewing angle.

In a case where the type of information displayed on the first interface includes privacy type information, step 240 is performed.

Step 240: Reduce the viewing angle of the first display area, and the information displayed in the first display area relates to privacy type information.

In some embodiments, the first display area may be a display area corresponding to the first interface. For example, as shown in (a) of FIG. 3, the first display area is the display area corresponding to the interface 433 of the notebook computer 430.

Specifically, the above-mentioned electronic device may include a privacy authority controller that recognizes the type of information displayed on the first interface of the electronic device 100, and the type of information displayed on the first interface includes privacy type information. In this case, the privacy authority controller sends a first instruction to the processor, which instructs to reduce the viewing angle of the display area corresponding to the first interface, so that the processor adjusts the upper electrode of the module 195 whose viewing angle is controllable. The voltage between the layer and the lower electrode layer reduces the viewing angle of the display area corresponding to the first interface.

As shown in FIG. 11, it is a schematic diagram of an example of the viewing angle change of the notebook computer 430 according to an embodiment of the present application. Among them, the notebook computer 430 is the electronic device involved in the method 200, the interface 433 of the notebook computer 430 is the first interface involved in the method 200, and the display area corresponding to the interface 433 of the notebook computer 430 is the first display area involved in the method 200 .

As shown in (a) of FIG. 11, the user can clearly see all the content displayed in the display area corresponding to the interface 433 of the notebook computer 430 within the viewing angle of 140°, that is, the user is in the area a1. Wherein, the a1 area can be understood as a spatial area, that is, the area of the a1 area along the projection perpendicular to the z axis is within 140°. At this time, two

windows

431 and 432 are opened on the interface 433 of the notebook computer 430. Among them, window 431 is a bank APP window, and window 432 is an entertainment APP window. The privacy authority controller of the notebook computer 430 recognizes that the content displayed in the window 431 on the interface 433 of the notebook computer 430 involves privacy type information, and the privacy authority controller sends a first instruction to the processor of the notebook computer 430, and the first instruction indicates The viewing angle of the display area corresponding to the interface 433 of the notebook computer 430 is reduced. For example, the viewing angle of the display area corresponding to the interface 433 of the notebook computer 430 can be adjusted from 140° to 90°.

According to the above formulas (1) and (4), it can be calculated that the display area corresponding to the interface 433 is before and after the visual angle adjustment, and the parameters are shown in Table 1.

Table 1

界面433的θTheta of interface 433	n _L n _L	αα	ββ	nn
140°140°	1.51.5	85°85°	3.2393.239	0.08510.0851
90°90°	1.51.5	85°85°	16.816.8	0.4350.435

For example, as shown in (c) of FIG. 11, it is a schematic diagram of the partial path of light in the module 195 of the notebook computer 430 whose viewing angle is controllable before and after the viewing angle of the notebook computer 430 is adjusted. Specifically, the processor of the notebook computer 430 adjusts the voltage between the upper electrode layer 1952 and the lower electrode layer 1955 in the module 195 whose viewing angle of the notebook computer 430 is controllable, so that the refractive index n of the liquid layer 1954 is adjusted from 0.0851 to 0.435. At this time, as shown in (b) of FIG. 11, the viewing angle of the display area corresponding to the interface 433 of the notebook computer 430 is adjusted from 140° to 90°. In this case, only the user area within the space angle (90 °) between ₁ and l ₂ l is formed, you can see the contents of the laptop display screen 433,430.

In other embodiments, the first display area is a display area corresponding to a window related to privacy type information on the first interface. For example, as described in (a) in Figure 3, the interface 433 of the laptop 430 includes a window 431 opened by a bank APP and a window 432 opened by an entertainment APP. Since the content displayed in the window 431 involves privacy-type information, The first display area is the display area corresponding to the window 431 in the interface 433.

Specifically, the privacy authority controller recognizes the type of information displayed on the first interface of the electronic device 100. In the case where the type of information displayed on the first interface includes privacy type information, the privacy authority controller sends to the processor The second instruction instructs to reduce the viewing angle of the display area corresponding to the privacy-related information window, and the processor determines that the window corresponding to the privacy-related information corresponds to the window of the privacy-related information according to the position of the window In the upper electrode layer and the lower electrode layer of the module 195 with controllable viewing angle, the display area corresponding to the window involving privacy type information, and the voltage between the corresponding upper electrode and the lower electrode can be adjusted The viewing angle of the display area corresponding to the window related to the privacy type information on the first interface is reduced.

In one embodiment, the determination of the display area corresponding to the window involving privacy-type information according to the position of the window involving privacy-type information may be based on the coordinates of the first vertex of the window involving privacy-type information and privacy-related information. The length of the window of information and the width of the window of privacy-related information determine the display area corresponding to the window of privacy-related information. Wherein, the first vertex can be any vertex of a window involving privacy type information. In another embodiment, determining the display area corresponding to the window involving privacy type information according to the position of the window involving privacy type information may be determined based on the coordinates of the four vertices of the window involving privacy type. The display area corresponding to the information window. Wherein, the coordinates may be coordinates on the display interface of the electronic device.

Optionally, the viewing angle of the second display area in the first interface can also be increased. Wherein, the second display area is a display area on the first interface other than a display area corresponding to a window related to privacy type information. For example, as described in (a) of FIG. 3, the second display area is a display area in the interface 433 excluding the display area corresponding to the window 431.

As shown in FIG. 12, it is a schematic diagram of another example of the viewing angle change of the notebook computer 430 according to an embodiment of the present application. Among them, the notebook computer 430 is the electronic device involved in the method 200, the interface 433 of the notebook computer 430 is the first interface involved in the method 200, and the display area corresponding to the window 431 in the interface 433 of the notebook computer 430 is involved in the method 200 The first display area.

As shown in (a) of FIG. 12, the user can clearly see all the content displayed in the display area corresponding to the interface 433 of the notebook computer 430 within the viewing angle of 140°, that is, the user is in the area a1. At this time, the bank APP window 431 and the entertainment APP window 432 are opened on the interface 433 of the notebook computer 430. The privacy authority controller of the notebook computer 430 recognizes that the content displayed in the window 431 on the interface 433 of the notebook computer 430 involves privacy type information, and the privacy authority controller sends a second instruction to the processor of the notebook computer 430, the second instruction indicating The viewing angle of the display area corresponding to the window 431 in the interface 433 of the notebook computer 430 is reduced. For example, the viewing angle of the display area corresponding to the window 431 in the interface 433 of the notebook computer 430 can be adjusted from 140° to 90° .

For example, as shown in Figure 12 (c), before and after the viewing angle of the notebook computer 430 is adjusted, the display area corresponding to the window 431 in the interface 433 of the notebook computer 430 corresponds to the light in the module 195 whose viewing angle is controllable. Schematic diagram of the local path. Specifically, the processor of the notebook computer 430 determines the display area corresponding to the window 431 according to the position of the window 431, and connects the upper electrode layer 1952 and the lower electrode layer 1955 of the module 195 with a controllable viewing angle of the notebook computer 430 to the window The voltage between the upper electrode and the lower electrode corresponding to the display area 431 is adjusted so that the refractive index n of the liquid layer 1954 corresponding to the display area of the window 431 is adjusted from 0.0851 to 0.435. At this time, as shown in FIG. 12 As shown in (b), the viewing angle of the display area corresponding to the window 431 in the interface 433 of the notebook computer 430 is adjusted from 140° to 90°. At this time, the user can only see the content displayed by the window 431 in the interface 433 of the notebook computer 430 within the space area formed by the angle (90°) between ₁₃ and _14.

In still other embodiments, the processor may determine the display area corresponding to the display unit of the identified privacy-related information as the first display area, that is, the first display area is the display corresponding to the privacy-related information on the first interface. Area, so that the processor reduces the viewing angle of the first display area. For example, on the first interface related to the privacy type text, the display area corresponding to the display unit displaying the text is the first display area. For another example, if a picture of a privacy type is involved on the first interface, the display area corresponding to the display unit displaying the picture is the first display area.

By adjusting the voltage between part or all of the corresponding upper electrode and lower electrode in the upper electrode layer and the lower electrode layer, the visual angle of the area where the privacy type information is displayed on the interface of the electronic device is reduced. For users from different perspectives, the content displayed on the electronic device will also be different, which can improve the user experience.

Optionally, in the case where the display screen 194 of the electronic device 100 has a touch screen function, the electronic device 100 can also detect the circle selection operation of the user's circle selection trajectory to correspond to the circle selection operation of the user's circle selection trajectory Adjust the viewing angle of the circled area. Among them, the circled area includes the start position of the circled track and the end position of the circled track. The circled trajectory may be a closed trajectory, and the area formed by the closed trajectory is determined as the circled area. Alternatively, the circled trajectory may also be an unclosed trajectory, and the electronic device fits the unclosed trajectory to form a closed trajectory, and determines the area formed by the fitted closed trajectory as the circled area. Specifically, the aforementioned privacy authority controller can instruct the processor to adjust the voltage between the electrode corresponding to the circled area in the upper electrode layer and the electrode corresponding to the circled area in the lower electrode layer, so as to realize the circle selection. Adjustment of the viewing angle of the area.

Optionally, in the on-screen display (OSD) mode of the electronic device, selection items corresponding to different viewing angle ranges can be set for different application scenarios. The user can adjust the viewing angle of the electronic device by turning on the corresponding option.

It can be understood that the specific examples in the embodiments of the present application are only to help those skilled in the art to better understand the embodiments of the present application, rather than limiting the scope of the embodiments of the present application.

It should also be understood that the size of the sequence numbers of the foregoing processes does not mean the order of execution, and the execution order of the processes should be determined by their functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

A person of ordinary skill in the art may be aware that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered as going beyond the scope of this application.

In the embodiments provided in this application, it should be understood that the disclosed device may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

In addition, the functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other media that can store program code .

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application. Should be covered within the scope of protection of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

A module with controllable viewing angle, characterized in that it comprises:

Upper electrode layer and lower electrode layer;

A lens array layer arranged between the upper electrode layer and the lower electrode layer;

A liquid layer provided between the lower electrode layer and the lens array layer;

The light incident on the module passes through the liquid layer and the lens array layer to exit the module, and the light from the liquid layer is incident on the interface between the liquid layer and the lens array layer along the target direction And refraction occurs, the refractive index of the lens array layer is the target refractive index,

In the case where the voltage between the upper electrode layer and the lower electrode layer is the first voltage, the refractive index of the liquid layer is the first refractive index, and the refracted light passes through the Lens array layer, the first refractive index and the target refractive index are different;

In the case where the voltage between the upper electrode layer and the lower electrode layer is the second voltage, the refractive index of the liquid layer is the second refractive index, and the refracted light passes through the In the lens array layer, the second voltage is different from the first voltage, the second refractive index is different from the first refractive index, the second refractive index is different from the target refractive index, and the second refractive index is different from the target refractive index. The direction is different from the first direction.
The module according to claim 1, wherein the lower electrode layer comprises:

A plurality of grooves, the plurality of grooves and the plurality of lenses of the lens array layer are in one-to-one correspondence, and the plurality of grooves are used for accommodating the liquid layer.
The module according to claim 2, wherein the lens array layer comprises convex lenses.
The module according to claim 1, wherein the upper electrode layer comprises:

A plurality of grooves, the plurality of grooves and the plurality of lenses of the lens array layer are in one-to-one correspondence, and the plurality of grooves are used for accommodating the liquid layer.
The module according to claim 4, wherein the lens array layer comprises a concave lens.
The module according to any one of claims 1 to 5, wherein the upper electrode layer further comprises a plurality of electrodes, and the plurality of electrodes correspond to the plurality of lenses in a one-to-one correspondence, and/or,

The lower electrode layer further includes a plurality of electrodes, and the plurality of electrodes corresponds to the plurality of lenses one-to-one.
The module according to any one of claims 1 to 6, wherein the module further comprises: an upper substrate arranged above the upper electrode layer and a lower substrate arranged below the lower electrode layer. Substrate.
A module with controllable viewing angle, characterized in that it comprises:

Upper electrode layer and lower electrode layer;

A lens array layer arranged between the upper electrode layer and the lower electrode layer;

A liquid layer arranged between the upper electrode layer and the lens array layer;

The light incident on the module passes through the lens array layer and the liquid layer and exits the module. The light from the lens array layer is incident on the lens array layer and the liquid layer along the target direction. Interface and refraction, the refractive index of the lens array layer is the target refractive index,

In the case where the voltage between the upper electrode layer and the lower electrode layer is the third voltage, the refractive index of the liquid layer is the third refractive index, and the refracted light passes through the Liquid layer, the third refractive index is different from the target refractive index;

In the case where the voltage between the upper electrode layer and the lower electrode layer is the fourth voltage, the refractive index of the liquid layer is the fourth refractive index, and the refracted light passes through the Liquid layer, the fourth voltage is different from the third voltage, the fourth refractive index is different from the third refractive index, the fourth refractive index is different from the target refractive index, and the fourth direction It is different from the third direction.
The module according to claim 8, wherein the lower electrode layer comprises:

A plurality of grooves, the plurality of grooves and the plurality of lenses of the lens array layer are in one-to-one correspondence, and the plurality of grooves are used for accommodating the liquid layer.
The module according to claim 9, wherein the lens array layer comprises a concave lens.
The module according to claim 8, wherein the upper electrode layer comprises:

A plurality of grooves, the plurality of grooves and the plurality of lenses of the lens array layer are in one-to-one correspondence, and the plurality of grooves are used for accommodating the liquid layer.
The module according to claim 11, wherein the lens array layer comprises a convex lens.
The module according to any one of claims 8 to 12, wherein the upper electrode layer further comprises a plurality of electrodes, and the plurality of electrodes correspond to the plurality of lenses one to one, and/or,

The lower electrode layer further includes a plurality of electrodes, and the plurality of electrodes corresponds to the plurality of lenses one-to-one.
The module according to any one of claims 8 to 13, wherein the module further comprises: an upper substrate arranged above the upper electrode layer and a lower substrate arranged below the lower electrode layer. Substrate.
A display, characterized by comprising: a liquid crystal display panel and the viewing angle controllable module according to any one of claims 1 to 14,

The liquid crystal display panel includes a display module and a backlight module, the display module includes a plurality of display units, and the plurality of display units correspond to the plurality of lenses in one-to-one correspondence;

The viewing angle controllable module is arranged between the display module and the backlight module, or the viewing angle controllable module is arranged above the liquid crystal display panel, the viewing angle controllable The module is used to adjust the viewing angle of the display.
An electronic device, characterized in that it comprises the module with a controllable viewing angle according to any one of claims 1 to 14.
A method for controlling the viewing angle, characterized in that the method is applied to an electronic device, the electronic device comprising the display of claim 15, and the method comprises:

Determining the first display area on the display interface of the electronic device where the viewing angle is to be adjusted;

Adjusting the voltage between the first electrode and the second electrode corresponding to the first display area so that the viewing angle of the first display area changes, the first electrode is the electrode of the upper electrode layer, The second electrode is an electrode of the lower electrode layer, and the first electrode corresponds to the second electrode.
The method according to claim 17, wherein the determining the first display area on the display interface of the electronic device whose viewing angle is to be adjusted comprises:

Identifying the type of information displayed on the display interface of the electronic device, where the type of information displayed includes a private type and a non-private type;

In a case where the type of information displayed on the display interface of the electronic device includes privacy type information, the display area corresponding to the display interface of the electronic device is determined as the first display area.
The method according to claim 17, wherein the determining the first display area on the display interface of the electronic device whose viewing angle is to be adjusted comprises:

Identifying a type of information displayed on a display interface of the electronic device, the display interface of the electronic device includes at least one window, and the type of displayed information includes a privacy type and a non-privacy type;

In the case where the type of information displayed on the display interface of the electronic device includes privacy type information, the display area corresponding to the window of the privacy type information on the display interface of the electronic device is determined as the first display area.
The method according to claim 19, wherein the determining a display area corresponding to a window related to privacy-type information on the display interface of the electronic device as the first display area comprises:

The display area corresponding to the window related to the privacy type information is determined according to the position of the window related to the privacy type information.
The method according to claim 17, wherein the determining the first display area on the display interface of the electronic device whose viewing angle is to be adjusted comprises:

Detect the circle selection operation of the user's circle selection track;

The circled area corresponding to the circled selection operation is determined as the first display area.
The method according to any one of claims 19 to 21, wherein, in the case where the type of information displayed on the display interface of the electronic device includes privacy type information, the method further comprises:

The voltage between the third electrode and the fourth electrode corresponding to the second display area is adjusted so that the viewing angle of the second display area changes, the third electrode is an electrode of the upper electrode layer, and The fourth electrode is the electrode of the lower electrode layer, the third electrode corresponds to the fourth electrode, and the second display area is the display on the display interface of the electronic device other than the first display area. area.
The method according to any one of claims 18 to 22, wherein the privacy type information includes information related to privacy application programs, information related to privacy keywords, and information related to privacy texts. Information, information related to private pictures and/or information related to private videos.
An electronic device, characterized by comprising: the display as claimed in claim 15; one or more processors; a memory; a plurality of application programs; and one or more programs, wherein the one or more programs are Stored in the memory, when the one or more programs are executed by the processor, the electronic device is caused to execute the following steps:

Determining the first display area on the display interface of the electronic device where the viewing angle is to be adjusted;

Adjusting the voltage between the first electrode and the second electrode corresponding to the first display area so that the viewing angle of the first display area changes, the first electrode is the electrode of the upper electrode layer, The second electrode is an electrode of the lower electrode layer, and the first electrode corresponds to the second electrode.
The electronic device according to claim 24, wherein when the one or more programs are executed by the processor, the electronic device is caused to perform the following steps:

Identifying the type of information displayed on the display interface of the electronic device, where the type of information displayed includes a private type and a non-private type;

In a case where the type of information displayed on the display interface of the electronic device includes privacy type information, the display area corresponding to the display interface of the electronic device is determined as the first display area.
The electronic device according to claim 24, wherein when the one or more programs are executed by the processor, the electronic device is caused to perform the following steps:

Identifying a type of information displayed on a display interface of the electronic device, the display interface of the electronic device includes at least one window, and the type of displayed information includes a privacy type and a non-privacy type;

In the case where the type of information displayed on the display interface of the electronic device includes privacy type information, the display area corresponding to the window of the privacy type information on the display interface of the electronic device is determined as the first display area.
The electronic device according to claim 26, wherein when the one or more programs are executed by the processor, the electronic device is caused to perform the following steps:

The display area corresponding to the window related to the privacy type information is determined according to the position of the window related to the privacy type information.
The electronic device according to claim 24, wherein when the one or more programs are executed by the processor, the electronic device is caused to perform the following steps:

Detect the circle selection operation of the user's circle selection track;

The circled area corresponding to the circled selection operation is determined as the first display area.
The electronic device according to any one of claims 26 to 28, wherein when the one or more programs are executed by the processor, the electronic device is caused to perform the following steps:

The voltage between the third electrode and the fourth electrode corresponding to the second display area is adjusted so that the viewing angle of the second display area changes, the third electrode is an electrode of the upper electrode layer, and The fourth electrode is the electrode of the lower electrode layer, the third electrode corresponds to the fourth electrode, and the second display area is the display on the display interface of the electronic device other than the first display area. area.
The electronic device according to any one of claims 24 to 29, wherein the privacy type information includes information related to privacy application programs, information related to privacy keywords, and information related to privacy texts. Information related to information corresponding to private pictures and/or information related to private videos.
A computer-readable storage medium, characterized in that it comprises computer instructions, when the computer instructions run on an electronic device, the electronic device executes the viewing angle control according to any one of claims 17 to 23 method.
A computer program product, characterized in that, when the computer program product runs on a computer, the computer is caused to execute the method for controlling the angle of view according to any one of claims 17 to 23.