CN116055628A

CN116055628A - Electronic device, display control method, display control device, and readable storage medium

Info

Publication number: CN116055628A
Application number: CN202310131331.8A
Authority: CN
Inventors: 汤镇辉
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2023-02-17
Filing date: 2023-02-17
Publication date: 2023-05-02

Abstract

The application discloses electronic equipment, a display control method, a display control device and a readable storage medium, and belongs to the technical field of electronic equipment. Wherein, electronic equipment includes: a housing; the display screen is arranged on the first side of the shell; the image sensor is arranged on the first side of the shell and is used for acquiring face images; the visual field adjusting device covers the light emitting side of the display screen and is used for adjusting the emission angle of light rays emitted by the display screen; and the processor is arranged in the shell, is electrically connected with the image sensor and the view field adjusting device, and is used for determining a target angle according to the face image and controlling the view field adjusting device to adjust the emission angle to the target angle.

Description

Electronic device, display control method, display control device, and readable storage medium

Technical Field

The application belongs to the technical field of electronic equipment, and particularly relates to electronic equipment, a display control method, a display control device and a readable storage medium.

Background

In the related art, electronic devices such as mobile phones present content for users through a display screen, and the display principle of the display screen is that lights with different colors and brightness are emitted to form a picture, so that the picture is watched by the users.

However, the light emitted from the display screen has a fixed emission angle and is directed at various angles on the front surface of the screen, and thus, there is a risk of privacy leakage due to theft by a nearby person.

Disclosure of Invention

The application aims to provide an electronic device, a display control method, a display control device and a readable storage medium, which can solve the problem that screen privacy leakage is caused by emitting screen light rays to a plurality of angles.

In a first aspect, an embodiment of the present application proposes an electronic device, including:

a housing;

the display screen is arranged on the first side of the shell;

the image sensor is arranged on the first side of the shell and is used for acquiring face images;

the visual field adjusting device is positioned on the light emitting side of the display screen and is used for adjusting the emission angle of light rays emitted by the display screen;

and the processor is arranged in the shell, is electrically connected with the image sensor and the view field adjusting device, and is used for determining a target angle according to the face image and controlling the view field adjusting device to adjust the emission angle to the target angle.

In a second aspect, an embodiment of the present application provides a display control method, where the control method includes:

acquiring a face image;

determining a target angle according to the face image;

And controlling a view field adjusting device of the electronic equipment according to the target angle so as to adjust the emission angle of the light rays emitted by the display screen of the electronic equipment to the target angle.

In a third aspect, an embodiment of the present application provides a display control apparatus, where the control apparatus includes:

the acquisition module is used for acquiring the face image;

the determining module is used for determining a target angle according to the face image;

the control module is used for controlling the view field adjusting device of the electronic equipment according to the target angle so as to adjust the emission angle of the light rays emitted by the display screen of the electronic equipment to the target angle.

In a fourth aspect, embodiments of the present application provide an electronic device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method as in the second aspect.

In a fifth aspect, embodiments of the present application provide a readable storage medium having stored thereon a program or instructions which, when executed by a processor, implement the steps of the control method as in the second aspect.

In a sixth aspect, embodiments of the present application provide a chip comprising a processor and a communication interface coupled to the processor for running a program or instructions implementing the steps of the method as in the second aspect.

In a seventh aspect, embodiments of the present application provide a computer program product stored in a storage medium, the program product being executable by at least one processor to implement a method as in the second aspect.

In this embodiment of the application, for electronic devices with screens such as mobile phones and tablet computers, through setting up the visual field adjusting device, according to the luminous direction of user's face position adjustment screen to focus the light that the screen was launched to user's face, namely in the user's visual field scope, the visual Field (FOV) of screen is all focused to user's visual field scope at this moment, and can not diverge to other angles, make other positions other people unable to receive the screen light, just can't snoop the display content of screen, therefore can guarantee user privacy security.

Drawings

Fig. 1 shows a schematic structural diagram of an electronic device according to an embodiment of the present application;

FIG. 2 shows a schematic diagram of a view field adjustment device according to an embodiment of the present application;

FIG. 3 shows a schematic diagram of a view field adjustment device according to an embodiment of the present application;

FIG. 4 illustrates an effect schematic of field of view adjustment according to an embodiment of the present application;

FIG. 5 illustrates an effect schematic of field of view adjustment according to an embodiment of the present application;

Fig. 6 shows a schematic structural diagram of an electronic device according to an embodiment of the present application;

FIG. 7 shows a schematic diagram of voltage phase between a first electrode and a second electrode according to an embodiment of the present application;

FIG. 8 shows a corresponding schematic diagram of voltage phase versus deflection angle in accordance with an embodiment of the present application;

FIG. 9 shows a schematic diagram of a preset relationship according to an embodiment of the present application;

FIG. 10 shows a flow chart of a display control method according to an embodiment of the present application;

fig. 11 shows a block diagram of a display control apparatus according to an embodiment of the present application

FIG. 12 shows a block diagram of an electronic device according to an embodiment of the present application;

fig. 13 is a schematic hardware structure of an electronic device implementing an embodiment of the present application.

Reference numerals:

100 electronics, 102 housing, 104 display screen, 106 image sensor, 108 field of view adjustment device, 1081 liquid crystal cell, 1082 first electrode, 1083 second electrode, 10832 target electrode, 1084 first light transmissive member, 1085 second light transmissive member, 110 processor.

Detailed Description

Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type and not limited to the number of objects, e.g., the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

The electronic device, the display control method, the display control device and the readable storage medium provided by the embodiment of the application are described in detail below through specific embodiments and application scenes thereof with reference to the accompanying drawings.

In some embodiments of the present application, an electronic device is provided, fig. 1 shows a schematic structural diagram of the electronic device according to an embodiment of the present application, as shown in fig. 1, an electronic device 100 includes:

a housing 102;

The display screen 104 is arranged on the first side of the shell 102;

the image sensor 106 is arranged on the first side of the shell 102 and is used for acquiring face images;

the view field adjusting device 108, the view field adjusting device 108 is located on the light emitting side of the display screen 104, and the view field adjusting device 108 is used for adjusting the emitting angle of the light rays emitted by the display screen 104;

the processor 110 is disposed in the housing 102, and is electrically connected to the image sensor 106 and the field of view adjusting device 108, and is configured to determine a target angle according to the face image, and control the field of view adjusting device 108 to adjust the emission angle to the target angle.

In the embodiment of the present application, the electronic device 100 may be an electronic device 100 such as a mobile phone, a tablet computer, a notebook computer, and the like. The electronic device 100 includes a housing 102, a display 104, and an image sensor 106, where the housing 102 is specifically a casing of the electronic device 100, and the display 104 is disposed on one side of the housing 102 and is used for displaying a picture. The image sensor 106 is disposed on the housing 102, specifically on the same side of the display screen 104 on the housing 102, and taking the electronic device 100 as a mobile phone for example, the image sensor 106 may be a front camera of the mobile phone.

The electronic device 100 further includes a field adjusting device 108, where the field adjusting device 108 covers the light emitting side of the display screen 104, when the display screen 104 works, light emitted by the display screen 104 passes through the field adjusting device 108 and then exits, and when the field adjusting device 108 works, the field adjusting device 108 can adjust an exit angle of the light emitted by the display screen 104.

The processor 110 may be a display control chip of the electronic device 100 or may be a main processing chip of the electronic device 100.

Specifically, when the electronic device 100 is in operation, a face image of the user is acquired by the image sensor 106, and angle information between the face and the display screen 104 of the electronic device 100 can be determined from the face image, and a target angle is determined according to the angle information.

The target angle is the angle of the light rays directed by the display screen 104 toward the user's face. After the processor 110 controls the field of view adjusting device 108 to adjust the light emitted from the display screen 104 to the target angle, the light emitted from the screen is collected by the field of view adjusting device 108 to the face of the user and also to the field of view of the user, and at this time, the field of view (FOV) of the screen is focused to the field of view of the user, but not diverged to other angles.

According to the embodiment of the application, the screen view field can be adjusted, and the screen view field is focused in the user view field range, so that other people cannot receive screen light, namely cannot watch the display content of the screen, the privacy safety of the user is guaranteed, the screen brightness can be improved when the user focuses the light, and the user can always see the screen picture clearly by following the face position of the user in the screen view field.

In some embodiments of the present application, fig. 2 and 3 show schematic structural diagrams of a field of view adjustment device 108 according to embodiments of the present application, as shown in fig. 2 and 3, the field of view adjustment device 108 includes:

a plurality of liquid crystal units 1081, wherein the light emitted from the display 104 is emitted through the liquid crystal units 1081, and the emitting direction of the light emitted from the display 104 is related to the orientation of the liquid crystal units 1081;

a first electrode 1082;

a second electrode 1083, a plurality of liquid crystal cells 1081 are disposed between the first electrode 1082 and the second electrode 1083, and the first electrode 1082 and the second electrode 1083 are used for applying an electric field to the liquid crystal cells 1081, and changing the orientation of the liquid crystal cells 1081 by the electric field.

In the present embodiment, the field of view adjustment device 108 includes a first electrode 1082 and a second electrode 1083 that are disposed opposite to each other, and a plurality of liquid crystal cells 1081 disposed between the first electrode 1082 and the second electrode 1083.

As shown in fig. 2, the first electrode 1082 and the second electrode 1083 are transparent electrodes, and the liquid crystal cell 1081 is a transparent liquid crystal cell 1081. In some embodiments, the first electrode 1082 is disposed parallel to the second electrode 1083. The plurality of liquid crystal cells 1081 are in contact with the electrode surface, which may be homeotropically processed such that the plurality of liquid crystal cells 1081 are homeotropically aligned, wherein the plurality of liquid crystal cells 1081 are always perpendicular to the electrode surface and also perpendicular to the display screen 104 when no external electric field is applied.

In operation of the field of view adjustment device 108, different voltages are applied to the first electrode 1082 and the second electrode 1083, and thus an electric field is generated between the first electrode 1082 and the second electrode 1083. Let the voltage on the first electrode 1082 be Vcom and the voltage on the second electrode 1083 be Vi, the potential difference between them be |Vcom-Vi|. When the potential difference is greater than the threshold voltage Vth of the lc cell 1081, i.e., |vcom-vi| > Vth, the lc cell 1081 exhibits a tendency perpendicular to the direction of the electric field under the action of the electric field, and the elastic property of the lc cell 1081 itself has a tendency to restore the lc cell 1081 to the initial state, i.e., the state perpendicular to the electrode surface, such that the orientation of the lc cell 1081 forms an angle θ with the initial orientation, i.e., the direction perpendicular to the display screen 104, under the interaction of the two forces, as shown in fig. 3.

When the screen light enters the field of view adjusting device 108, the direction of the light is deflected under the refraction action of the liquid crystal unit 1081, when the orientation of the liquid crystal unit 1081 is changed, the refractive index of the liquid crystal unit 1081 to the light is also changed, in an ideal case, when the orientation of the liquid crystal unit 1081 is at an angle θ, the emitting direction of the screen light is also at an angle θ with respect to the plane of the screen, so that the adjustment of the field of view of the screen of the electronic device 100 by the line of sight is enabled.

Fig. 4 and fig. 5 show schematic views of the effect of field of view adjustment according to the embodiments of the present application, as shown in fig. 4 and fig. 5, by converging the light rays emitted by the display screen 104 to a specific angle, the light rays of the screen can be concentrated, so as to improve the brightness of the screen, and meanwhile, the visible range of the screen can be concentrated to the user, and the other ranges are all invisible ranges, so that the anti-peeping function is realized.

According to the embodiment of the application, the refractive index of the transparent liquid crystal unit 1081 is changed through the transparent electrode, so that the view field of the screen of the electronic equipment 100 is adjusted, the directional adjustment of the view field of the screen is realized, and a user can always see the display content of the screen under the condition that the sight line screen is prevented from being peeped.

In some embodiments of the present application, the field of view adjustment device 108 includes a first adjustment region and a second adjustment region, the operating voltage of the second electrode 1083 within the first adjustment region being different from the operating voltage of the second electrode 1083 within the second adjustment region.

In the embodiment of the present application, the field of view adjusting means 108 covers the display screen 104 of the electronic device 100, wherein the shape of the field of view adjusting means 108 matches the shape of the display screen 104 of the electronic device 100. Specifically, the shape of the display screen 104 of the electronic apparatus 100 is almost rectangular, and in the case where the shape of the display screen 104 is rectangular, the shape of the field-of-view adjustment device 108 is also rectangular.

The field of view adjustment device 108 includes a first adjustment region and a second adjustment region, wherein the operating voltage of the second electrode 1083 within the first adjustment region is different from the operating voltage of the second electrode 1083 within the first adjustment region such that the first and second adjustment regions differ in the angle of deflection of the light.

Specifically, fig. 6 shows a schematic structural diagram of the electronic device 100 according to the embodiment of the present application, and as shown in fig. 6, the field of view adjusting device 108 includes a first side and a second side, and assuming that the field of view adjusting device 108 is a rectangular adjusting device, the first side and the second side are long sides and short sides of a rectangle, respectively.

Illustratively, assuming that the number of the second electrodes 1083 is K, the K second electrodes 1083 are disposed in a distributed manner on the first side. In some embodiments, K second electrodes 1083 are uniformly distributed.

In operation of the field of view adjustment device 108, the processor 110 determines a target angle from the image of the user's face, the target angle being the angle between the display screen 104 of the electronic device 100 and the user's face. Since the display 104 has a certain area, and the user will not typically view the electronic device 100 in a vertical direction when viewing the electronic device 100, the distance and angle between different areas of the display 104 and the face of the user are different, and thus the optimal viewing angle is different.

In view of the above, in the embodiment of the present application, the target electrode 10832 is determined in the K second electrodes 1083 according to the target angle, where the target electrode 10832 is capable of dividing the field of view adjustment area and the display screen 104 into two corresponding areas, and the target electrode 10832 divides the field of view adjustment device 108 into a first adjustment area and a second adjustment area, and divides the display screen 104 into a first display area and a second display area, where the first adjustment area covers the first display area, and the second adjustment area covers the second display area.

Different voltages are applied to the N second electrodes 1083 of the first adjustment area and the M second electrodes 1083 of the second adjustment area, so that the first adjustment area and the second adjustment area adjust the light rays of the screen at different angles, so that the light rays of the first display area and the second display area can be emitted towards the face of the user, for example, the emission angle of the area closer to the face is larger, and the emission angle of the area relatively far away from the face is smaller, thereby ensuring the display effect.

Specifically, when the field adjusting device 108 is operated, a voltage Vcom is applied to the first electrode 1082 and a voltage Vi is applied to the i-th second electrode 1083, and the voltage phase distribution is set to be phase with respect to the i-th second electrode 1083 of the N second electrodes 1083 of the first adjustment region as shown in fig. 7 _i1 Let the phase shift corresponding to the ith second electrode 1083 of the M second electrodes 1083 of the second adjustment region be phase _i2 The target electrode 10832 is the j-th second electrode 1083 of the K second electrodes 1083, and the phase shift amount may be defined as:

when light rays emitted from the display screen 104 pass through the field of view adjusting device 108, the incident light rays are deflected by an angle θ, and a specific deflection formula is:

wherein θ _i For the deflection angle θ by which the liquid crystal cell 1081 corresponding to the ith second electrode 1083 of the K second electrodes 1083 deflects the light emitted from the display screen 104 _i1 The liquid crystal cell 1081 corresponding to the ith second electrode 1083 of the N second electrodes 1083 of the first adjustment region deflects the light emitted from the display screen 104 by an angle θ _i2 The liquid crystal cell 1081 corresponding to the i-th second electrode 1083 of the M second adjustment regions deflects the light emitted from the display screen 104 by a deflection angle, K is the number of the second electrodes 1083, K is a wave vector of the light emitted from the display screen 104, k=2pi+.λ, λ is a wavelength of the light emitted from the display screen 104, d is a distance value between the first electrode 1082 and the second electrode 1083, and d is a preset constant.

The deflection angles corresponding to the different phases are shown in fig. 8.

According to the embodiment of the application, the view field adjusting device 108 is divided, so that light rays emitted from different areas of the screen can be directly emitted to the face of a user, and the display effect of the screen is improved.

In some embodiments of the present application, the processor 110 is further configured to determine the first angle and the second angle based on the target angle;

the second electrode 1083 in the first adjusting region generates a first electric field with the first electrode 1082 through the first operating voltage, so as to adjust the emission angle of the light emitted from the first display region of the display screen 104 to be a first angle;

the second electrode 1083 in the second adjusting region generates a second electric field with the first electrode 1082 through a second working voltage, so as to adjust the emission angle of the light emitted from the second display region of the display screen 104 to be a second angle;

the first display area is an area of the display screen 104 covered by the first adjustment area, and the second display area is an area of the display screen 104 covered by the second adjustment area.

In this embodiment, the processor 110 determines a first angle and a second angle according to the target angle, where the first angle is used to adjust the angle of the light emitted from the first display area, and the second angle is used to adjust the angle of the light emitted from the second display area.

Specifically, since the display screen 104 has a certain area, and the user typically does not watch the electronic device 100 in a vertical direction when watching the electronic device 100, the distances and angles between different areas of the display screen 104 and the user's face are different, and thus the optimal angle of viewing is also different.

The first operating voltage is determined through the first angle, and the second electrode 1083 in the first adjusting region is controlled to operate at the first operating voltage, at this time, the electric field between the second electrode 1083 and the first electrode 1082 in the first adjusting region is the first electric field, and the first electric field can rotate the liquid crystal unit 1081 in the first adjusting region by an angle matching the first angle, at this time, the emission angle of the emitted light of the first display region covered by the first adjusting region is adjusted to be the first angle.

Similarly, the second operating voltage is determined according to the second angle, and the second electrode 1083 in the second adjustment area is controlled to operate at the second operating voltage, where the electric field between the second electrode 1083 and the first electrode 1082 in the second adjustment area is the second electric field, and the second electric field can rotate the liquid crystal unit 1081 in the second adjustment area by an angle matching the second angle, and at this time, the emission angle of the light rays emitted from the second display area covered by the second adjustment area is adjusted to be the second angle.

The specific field adjusting effect is shown in fig. 4 and 5, where i is the index number of the second electrode 1083, and i=j represents the j-th electrode of the K second electrodes 1083, i.e., the target electrodes 10832, θ ₁ At a first angle of θ ₂ Is at a second angle.

According to the method and the device for determining the target angle, the target angle is determined according to the face image, and the deflection angles corresponding to the first display area and the second display area are respectively determined according to the target angle, so that light rays emitted from different areas of the screen can be accurately emitted towards the face of a user, and the display effect of the screen is improved.

In some embodiments of the present application, the processor 110 is specifically configured to:

determining a target phase shift amount according to the target angle, the wavelength of light emitted from the display screen 104, and the distance value between the first electrode 1082 and the second electrode 1083;

determining a target voltage value according to the target phase shift amount and a preset relation, wherein the preset relation is a mapping relation between the phase shift amount and the voltage value;

the first electrode 1082 and the second electrode 1083 are controlled to generate an electric field according to a target voltage value.

In the embodiment of the present application, the target voltage value is the voltage value between the first electrode 1082 and the second electrode 1083, and if the voltage on the first electrode 1082 is Vcom and the voltage on the second electrode 1083 is Vi, the target voltage value is |vcom-vi|.

Before determining the target voltage values, the phase delay amounts corresponding to the different target voltage values, namely the target phase shift amounts, can be measured by traversing the different target voltage values. After the corresponding relation between different target voltages and corresponding target phase shift amounts is measured, the corresponding relation is fit into the preset relation curve, and the preset relation curve is shown in fig. 9.

Specifically, when determining the target voltage value, a fixed square wave signal is applied to the first electrode 1082 and a voltage signal corresponding to the target angle is applied to the second electrode 1083, so that the voltage applied between the first electrode 1082 and the second electrode 1083 of the field-of-view adjusting device 108 has a square value Vrms _i Meet Vrms _i =vcom-Vi, vrms _i I.e., the target voltage value corresponding to the i-th second electrode 1083 among the K second electrodes 1083.

The target phase shift amount is determined based on the target angle, the wavelength of light emitted from the display screen 104, and the distance value between the first electrode 1082 and the second electrode 1083. Specifically, the target phase shift amount may be determined by the following formula:

phase _i ＝mod((i-1)×k×d×sinθ，2π)；

wherein phase is _i Is the target phase shift amount corresponding to the ith second electrode 1083 of the K second electrodes 1083, mod (x, 2pi) is a remainder function, and specifically represents that x is subjected to 2pi remainder, K is a wave vector of light emitted from the display screen 104, k=2pi+.λ, λ is a wavelength of light emitted from the display screen 104, d is a distance value between the first electrode 1082 and the second electrode 1083, and d is a preset constant.

After obtaining the target phase shift, determining a target voltage value Vrms corresponding to the target phase shift through a preset relation curve _i And according to Vrms _i The first electrode 1082 and the second electrode 1083 are controlled to operate, specifically, a voltage Vcom is applied to the first electrode 1082 and a voltage Vi is applied to the ith second electrode 1083, and a voltage difference between the first electrode 1082 and the second electrode 1083 is Vrms _i 。

According to the embodiment of the application, the liquid crystal unit 1081 is deflected in a mode of accurately controlling the electrode voltage, so that the screen view field can be dynamically adjusted, and the screen display effect is ensured while the anti-peeping effect is realized.

In some embodiments of the present application, as shown in fig. 2, the field of view adjustment device 108 further includes:

a first light-transmitting member 1084, the first electrode 1082 being located between the first light-transmitting member 1084 and the plurality of liquid crystal cells 1081;

the second light-transmitting member 1085, the second electrode 1083 is located between the second light-transmitting member 1085 and the plurality of liquid crystal cells 1081.

In the embodiment of the present application, the first light-transmitting member 1084 and the second light-transmitting member 1085 may be glass, or may be other light-transmitting materials. One side of the first electrode 1082 is attached to the first light-transmitting member 1084, the second side of the first electrode 1082 is in contact with the liquid crystal cell 1081, one side of the second electrode 1083 is attached to the second light-transmitting member 1085, and the second side of the second electrode 1083 is in contact with the liquid crystal cell 1081.

The first and second

light transmitting members

1084 and 1085 are provided to effectively protect the first and

second electrodes

1082 and 1083 and the liquid crystal cell 1081.

In some embodiments of the present application, two transparent glasses, transparent liquid crystal and two transparent electrodes are used to form a module capable of dynamically adjusting the FOV of the screen, namely the field of view adjusting device. The module can be embedded on the screen of the intelligent terminal or embedded in the screen of the intelligent terminal.

The screen capable of dynamically adjusting the FOV of the screen is more focused than the common screen, so that the screen capable of dynamically adjusting the FOV of the screen can be brighter than the screen of a normal intelligent terminal under the same screen backlight. Therefore, under the condition that the user experiences the same brightness, the current required by the screen of the dynamically adjustable screen FOV is smaller than that of the screen of the common intelligent terminal, and the screen capable of dynamically adjusting the screen FOV is more power-saving compared with the screen of the common intelligent terminal.

The optimal included angle between the target face and the screen is detected through the front camera, and then the FOV of the screen is automatically adjusted, so that a user can see that the mobile phone is in an optimal view angle, and the user experience is improved. Meanwhile, the nearby non-target user (whether the user can be authenticated as the target user or not through the camera) cannot see the content of the screen because the FOV included angle between the non-target user and the screen is not in the visible range, and the safety of the content displayed on the screen is ensured.

Hereinafter, a part in which two transparent glasses (first light transmitting member and second light transmitting member), transparent liquid crystal (liquid crystal cell) and two transparent electrodes (first electrode and second electrode) are added will be referred to as a dynamically adjustable screen FOV module, and will be described.

The inner surface of the upper transparent glass is plated with a layer of uniform transparent conductive electrode serving as a common electrode (a first electrode), and the inner surface of the lower transparent glass is plated with K transparent conductive electrodes which are the same in width and are parallel to each other and serving as a second electrode. And (5) filling a transparent liquid crystal material between the two layers of transparent glass plates to form a liquid crystal unit. The surface of the electrode is subjected to homeotropic treatment, so that liquid crystal molecules are homeotropically arranged, namely, the initial orientation of the liquid crystal molecules under the condition of no external electric field is vertical to the surface of the substrate of the electrode.

When Vcom voltage is applied to the first electrode terminal and Vi voltage is applied to the second electrode terminal, the voltage difference between the Vcom voltage and the Vi voltage is larger than the threshold voltage Vth of the liquid crystal unit, namely |Vcom-Vi| > Vth, liquid crystal molecules have a trend of being perpendicular to an external electric field under the action of the external electric field, the elastic property of the liquid crystal has a trend of enabling the liquid crystal molecules to return to an initial state, and under the action of the two opposite forces, the orientation of the liquid crystal molecules and the initial orientation form an angle theta, namely the liquid crystal molecules rotate for the angle theta.

The effective refractive index of the transparent liquid crystal of the liquid crystal cell will be different at different voltages, so changing the voltage difference between the first electrode and the second electrode is equivalent to changing the equivalent refractive index of the liquid crystal cell. And loading a fixed square wave signal on the first electrode terminal, and loading a voltage signal corresponding to the deflection angle theta on the second electrode terminal, so that the voltage loaded on the dynamically adjustable screen FOV module has a root mean square value Vrms_i=Vcom-Vi. Then, according to the different voltage differences, and the corresponding phase delay amount phase is measured, finally, the relation between the phase and the voltage is fitted into a relation curve between the phase and the voltage.

The change of the refractive index is realized by adjusting the voltage difference between Vi and Vcom, so that the deflection of the light beam is realized. The phase modulation formula at the ith electrode is:

phase _i ＝mod((i-1)×k×d×sinθ，2π)；

wherein phase is _i The method is characterized in that the method is a target phase shift quantity corresponding to an ith second electrode in K second electrodes, mod (x, 2 pi) is a residual function, and specifically represents that x is subjected to 2 pi residual, K is a wave vector of light emitted by a display screen, k=2pi/lambda is the wavelength of the light emitted by the display screen, d is a distance value between the first electrode and the second electrode, and d is a preset constant.

The method comprises the steps of carrying out regional phase control on a dynamically adjustable screen FOV module, independently dividing a screen into a first display region and a second display region, and changing the phase modulation quantity of each subregion, so as to change the emergent direction of the incident light of the screen, and finally realizing the dynamic adjustment of the screen FOV.

Setting the phase shift corresponding to the ith second electrode in the N second electrodes of the first adjusting area as phase _i1 Let the phase shift corresponding to the ith second electrode of M second electrodes of the second adjusting region be phase _i2 The target electrode is the j-th second electrode of the K second electrodes, and the phase shift amount may be defined as:

when light rays emitted by the display screen pass through the view field adjusting device, incident light rays deflect, the deflection angle is theta, and a specific deflection formula is as follows:

wherein θ _i For the deflection angle theta of the liquid crystal unit corresponding to the ith second electrode in the K second electrodes for deflecting the light rays emitted by the display screen _i1 For the deflection angle theta of the liquid crystal unit corresponding to the ith second electrode in the N second electrodes of the first adjusting area for deflecting the light rays emitted by the display screen _i2 The deflection angle of the liquid crystal unit corresponding to the ith second electrode in the M second electrodes in the second adjustment area for deflecting the light emitted by the display screen is K, K is the number of the second electrodes, K is the wave vector of the light emitted by the display screen, k=2pi/λ, λ is the wavelength of the light emitted by the display screen, d is the distance value between the first electrode and the second electrode, and d is a preset constant.

The specific algorithm flow of the dynamically adjusted screen FOV method is as follows:

step1, determining an included angle theta between a target face and a screen;

step2, determining the optimal boundary index value of the first adjusting region and the second adjusting region according to the included angle theta in step1, wherein the index value is the index value of the target electrode;

step3, determining the angle theta of the first adjusting area required to deflect according to the included angle theta in step1 _i1 Then calculate the corresponding phase shift amount phase on each second electrode in the first adjusting region _i1 ；

step4, determining the angle theta of the second adjusting area required to deflect according to the included angle theta in step1 _i2 Calculating the corresponding phase shift amount phase on each second electrode in the second adjusting region _i2 ；

step5, obtaining phase shift by searching the relation curve of phase and voltage _i1 And phase _i2 Corresponding voltage profiles Vi1 and Vi2;

step6, loading the voltage distribution Vi1 and Vi2 on each second electrode in the first and second conditioning regions to the dynamically adjusted screen FOV module.

As shown in fig. 4, the visual FOV of the screen of the general intelligent terminal is 2θa, and the visual FOV of the dynamically adjustable screen FOV is 2θb; since thetab < thetaa, i.e., the dynamically adjustable screen FOV is more focused than a normal screen, the dynamically adjustable screen FOV will be brighter than the normal smart terminal screen under the same screen backlight. Under the condition that the user experiences the same brightness, the current required by the screen of the dynamically adjustable screen FOV is smaller than that of the screen of the common intelligent terminal, and therefore the screen of the dynamically adjustable screen FOV is more power-saving compared with the screen of the common intelligent terminal.

As shown in fig. 5, by loading different voltage data, not only the angle θ of the visual range thereof can be arbitrarily adjusted to be larger/smaller, but also the position of the visual range thereof can be arbitrarily adjusted up and down. The optimal included angle between the target face and the screen is detected through the front camera, and then the FOV of the screen is dynamically adjusted, so that a user can watch the mobile phone at an optimal view angle, and the user experience is improved. Meanwhile, the nearby non-target user (whether the user can be authenticated as the target user through the camera) cannot see the content of the screen because the included angle between the non-target user and the FOV of the screen is not in the visible range.

In some embodiments of the present application, a display control method is provided, which is applied to the electronic device provided in any of the embodiments described above, and fig. 10 shows a flowchart of the display control method according to an embodiment of the present application, and as shown in fig. 10, the display control method includes:

step 1002, obtaining a face image;

step 1004, determining a target angle according to the face image;

step 1006, controlling a field adjusting device of the electronic device according to the target angle to adjust the emission angle of the light emitted by the display screen of the electronic device to the target angle.

In the embodiment of the application, the electronic equipment such as a mobile phone collects face images of a user through the image sensor, angle information between the face and a display screen of the electronic equipment can be determined through the face images, and a target angle is determined according to the angle information.

The target angle is the angle of the light rays directed by the display screen toward the face of the user. After the processor controls the view field adjusting device to adjust the light rays emitted by the display screen to the target angle, the light rays emitted by the screen are gathered to the face of the user and also gathered to the view field range of the user by the view field adjusting device, and at the moment, the view Field (FOV) of the screen is focused in the view field range of the user completely and cannot diverge to other angles.

In some embodiments of the present application, the field of view adjustment device includes a first adjustment region and a second adjustment region, the first adjustment region and the second adjustment region being determined according to a face position in the face image, the control method further comprising:

determining a first angle and a second angle according to the target angle;

the field of view adjusting device of electronic equipment is controlled according to the target angle to adjust the outgoing angle of the light rays emitted by the display screen of the electronic equipment to the target angle, specifically comprising:

Controlling a view field adjusting device according to the first angle and the second angle to adjust the emission angle of light rays emitted by a first display area of the display screen to be the first angle and adjust the emission angle of light rays emitted by a second display area of the display screen to be the second angle;

the first display area is an area of the display screen covered by the first adjusting area, and the second display area is an area of the display screen covered by the second adjusting area.

In an embodiment of the present application, the field of view adjusting device includes a first electrode and a second electrode disposed opposite to each other, and a plurality of liquid crystal cells disposed between the first electrode and the second electrode. The number of the second electrodes is K, and the K second electrodes are distributed on the first side of the field of view regulating device.

When the visual field adjusting device works, the processor determines a target angle according to the face image of the user, wherein the target angle is the angle between the display screen of the electronic equipment and the face of the user. Because the display screen has a certain area, and the user can not watch the electronic equipment in the vertical direction generally when watching the electronic equipment, the distances and angles between different areas of the display screen and the faces of the user are different, and therefore the optimal watching angles are also different.

And determining a target electrode in the K second electrodes, wherein the target electrode can divide the field-of-view adjusting area and the display screen into two corresponding areas, the target electrode divides the field-of-view adjusting device into a first adjusting area and a second adjusting area, and divides the display screen into a first display area and a second display area, the first adjusting area covers the first display area, and the second adjusting area covers the second display area.

And determining a first angle and a second angle according to the target angle, wherein the first angle is used for adjusting the angle of light rays emitted by the first display area, and the second angle is used for adjusting the angle of light rays emitted by the second display area.

The view field adjusting device is controlled according to the first angle and the second angle, so that the first adjusting area and the second adjusting area adjust the light rays of the screen at different angles, the light rays of the first display area and the second display area can be emitted towards the face of a user, the emitting angle of the area which is closer to the face is larger, and the emitting angle of the area which is relatively far away from the face is smaller, so that the display effect is ensured.

In some embodiments of the present application, the field of view adjustment device further comprises a first electrode and a second electrode;

the field of view adjusting device is controlled according to first angle and second angle to adjust the angle of emission of light that the first display area of display screen sent to first angle, and adjust the angle of emission of light that the second display area of display screen sent to the second angle, specifically include:

determining a first target phase shift according to a first angle, the wavelength of light emitted by the display screen and a distance value, wherein the distance value is a distance value between the first electrode and the second electrode;

determining a second target phase shift amount according to the second angle, the wavelength and the distance value;

determining a first target voltage value according to the first target phase shift amount and a preset relation curve;

determining a second target voltage value according to the second target phase shift amount and a preset relation curve;

controlling the second electrode in the first adjusting area to work according to the first target voltage value so as to generate a first electric field between the first electrode and the second electrode in the first adjusting area;

and controlling the second electrode in the second regulation area to work according to the second target voltage value so as to generate a second electric field between the first electrode and the second electrode in the second regulation area.

In this embodiment, when the field of view adjusting device is in operation, a voltage Vcom is applied to the first electrode and a voltage Vi is applied to the ith second electrode, and then, on the first adjusting region and the second adjusting region, the phase shift amount corresponding to the ith second electrode in the N second electrodes of the first adjusting region is set to be phase _i1 Let the phase shift corresponding to the ith second electrode of M second electrodes of the second adjusting region be phase _i2 The target electrode is the j-th second electrode of the K second electrodes, and the phase shift amount may be defined as:

The first electrode is loaded with a fixed square wave signal, and the second electrode is loaded with a voltage signal corresponding to the target angle, so that the voltage average root square value between the first electrode and the second electrode of the visual field adjusting device is Vrms _i Meet Vrms _i ＝Vcom–ViThe Vrms is _i I.e., the target voltage value corresponding to the i-th second electrode of the K second electrodes.

And determining a target phase shift amount according to the target angle, the wavelength of light emitted by the display screen and the distance value between the first electrode and the second electrode. Specifically, the target phase shift amount may be determined by the following formula:

phase _i ＝mod((i-1)×k×d×sinθ，2π)；

After obtaining the target phase shift, determining a target voltage value Vrms corresponding to the target phase shift through a preset relation curve _i And according to Vrms _i The first electrode and the second electrode are controlled to work, specifically, a voltage Vcom is applied to the first electrode, a voltage Vi is applied to the ith second electrode, and at the moment, the voltage difference between the first electrode and the second electrode is Vrms _i 。

And respectively controlling the first electrode and the N second electrodes to generate first voltage, and controlling the first electrode and the M second electrodes to generate second voltage, so that light rays emitted by the first display area and the second display area are emitted to the human face at different angles.

According to the embodiment of the application, the liquid crystal unit is deflected in a mode of accurately controlling the electrode voltage, so that the view field of the screen can be dynamically adjusted, and the screen display effect is ensured while the anti-peeping effect is realized.

In some embodiments of the present application, a display control apparatus is provided, which is applied to the electronic device provided in any of the embodiments described above, fig. 11 shows a block diagram of a structure of the display control apparatus according to an embodiment of the present application, and as shown in fig. 11, a display control apparatus 1100 includes:

an acquisition module 1102, configured to acquire a face image;

a determining module 1104, configured to determine a target angle according to the face image;

the control module 1106 is configured to control a field of view adjusting device of the electronic device according to the target angle, so as to adjust an emission angle of light emitted by a display screen of the electronic device to the target angle.

In some embodiments of the present application, the field of view adjustment means comprises a first adjustment region and a second adjustment region, the first adjustment region and the second adjustment region being determined from a face position in the face image;

the determining module is specifically used for determining a first angle and a second angle according to the target angle;

the control module is specifically configured to control the field of view adjusting device according to the first angle and the second angle, so as to adjust an emission angle of light rays emitted by the first display area of the display screen to the first angle, and adjust an emission angle of light rays emitted by the second display area of the display screen to the second angle;

The determining module is specifically configured to:

the control module is specifically used for:

The display control device in the embodiment of the application may be an electronic device, or may be a component in an electronic device, for example, an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices than a terminal. By way of example, the electronic device may be a mobile phone, tablet computer, notebook computer, palm computer, vehicle-mounted electronic device, mobile internet appliance (Mobile Internet Device, MID), augmented reality (augmented reality, AR)/Virtual Reality (VR) device, robot, wearable device, ultra-mobile personal computer, UMPC, netbook or personal digital assistant (personal digital assistant, PDA), etc., but may also be a server, network attached storage (Network Attached Storage, NAS), personal computer (personal computer, PC), television (TV), teller machine or self-service machine, etc., and the embodiments of the present application are not limited in particular.

The display control device in the embodiment of the present application may be a device having an operating system. The operating system may be an Android operating system, an iOS operating system, or other possible operating systems, which are not specifically limited in the embodiments of the present application.

The display control device provided in the embodiment of the present application can implement each process implemented by the foregoing method embodiment, and in order to avoid repetition, details are not repeated here.

Optionally, an electronic device is further provided in the embodiments of the present application, fig. 12 shows a block diagram of a structure of an electronic device according to an embodiment of the present application, as shown in fig. 12, where, electronic device 1200 includes a processor 1202, a memory 1204, and a program or an instruction stored in memory 1204 and capable of running on processor 1202, where the program or instruction is executed by processor 1202 to implement each process of the foregoing method embodiment, and the same technical effects are achieved, and are not repeated herein.

The electronic device in the embodiment of the application includes the mobile electronic device and the non-mobile electronic device.

The electronic device 1300 includes, but is not limited to: radio frequency unit 1301, network module 1302, audio output unit 1303, input unit 1304, sensor 1305, display unit 1306, user input unit 1307, interface unit 1308, memory 1309, and processor 1310.

Those skilled in the art will appreciate that the electronic device 1300 may also include a power source (e.g., a battery) for powering the various components, which may be logically connected to the processor 1310 by a power management system, such as to perform functions such as managing charging, discharging, and power consumption by the power management system. The electronic device structure shown in fig. 13 does not constitute a limitation of the electronic device, and the electronic device may include more or less components than shown, or may combine certain components, or may be arranged in different components, which are not described in detail herein.

Wherein the processor 1310 is configured to obtain a face image; determining a target angle according to the face image; and controlling a view field adjusting device of the electronic equipment according to the target angle so as to adjust the emission angle of the light rays emitted by the display screen of the electronic equipment to the target angle.

Optionally, the field of view adjustment device includes a first adjustment region and a second adjustment region, the first adjustment region and the second adjustment region being determined from a face position in the face image;

the processor 1310 is also configured to determine a first angle and a second angle based on the target angle; controlling a view field adjusting device according to the first angle and the second angle to adjust the emission angle of light rays emitted by a first display area of the display screen to be the first angle and adjust the emission angle of light rays emitted by a second display area of the display screen to be the second angle; the first display area is an area of the display screen covered by the first adjusting area, and the second display area is an area of the display screen covered by the second adjusting area.

Optionally, the field of view adjustment device further comprises a first electrode and a second electrode;

the processor 1310 is further configured to determine a first target phase shift amount according to the first angle, a wavelength of the light emitted from the display screen, and a distance value, where the distance value is a distance value between the first electrode and the second electrode; determining a second target phase shift amount according to the second angle, the wavelength and the distance value; determining a first target voltage value according to the first target phase shift amount and a preset relation curve; determining a second target voltage value according to the second target phase shift amount and a preset relation curve; controlling the second electrode in the first adjusting area to work according to the first target voltage value so as to generate a first electric field between the first electrode and the second electrode in the first adjusting area; and controlling the second electrode in the second regulation area to work according to the second target voltage value so as to generate a second electric field between the first electrode and the second electrode in the second regulation area.

It should be appreciated that in embodiments of the present application, the input unit 1304 may include a graphics processor (Graphics Processing Unit, GPU) 13041 and a microphone 13042, the graphics processor 13041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 1306 may include a display panel 13061, and the display panel 13061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1307 includes at least one of a touch panel 13071 and other input devices 13072. The touch panel 13071 is also referred to as a touch screen. The touch panel 13071 can include two parts, a touch detection device and a touch controller. Other input devices 13072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.

Memory 1309 may be used to store software programs as well as various data. The memory 1309 may mainly include a first memory area storing programs or instructions and a second memory area storing data, wherein the first memory area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 1309 may include volatile memory or nonvolatile memory, or the memory 1309 may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM), static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (ddr SDRAM), enhanced SDRAM (Enhanced SDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). Memory 1309 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

The processor 1310 may include one or more processing units; optionally, processor 1310 integrates an application processor that primarily handles operations related to the operating system, user interface, and applications, and a modem processor that primarily handles wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 1310.

The embodiment of the application further provides a readable storage medium, on which a program or an instruction is stored, which when executed by a processor, implements each process of the above method embodiment, and can achieve the same technical effects, so that repetition is avoided, and no further description is given here.

The processor is a processor in the electronic device in the above embodiment. Readable storage media include computer readable storage media such as Read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), magnetic or optical disks, and the like.

The embodiment of the application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled with the processor, the processor is used for running a program or instructions, the processes of the above method embodiment are realized, the same technical effects can be achieved, and in order to avoid repetition, the description is omitted here.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, chip systems, or system-on-chip chips, etc.

The embodiments of the present application provide a computer program product, which is stored in a storage medium, and the program product is executed by at least one processor to implement the respective processes of the above method embodiments, and achieve the same technical effects, and are not repeated herein.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solutions of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), comprising several instructions for causing a terminal (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the methods of the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims

1. An electronic device, comprising:

a housing;

the display screen is arranged on the first side of the shell;

and the processor is arranged in the shell, is electrically connected with the image sensor and the view field adjusting device and is used for determining a target angle according to the face image and controlling the view field adjusting device to adjust the emission angle to the target angle.

2. The electronic device of claim 1, wherein the field of view adjustment means comprises:

the display screen comprises a plurality of liquid crystal units, wherein light rays emitted by the display screen are emitted through the liquid crystal units, and the emitting direction of the light rays emitted by the display screen is related to the direction of the liquid crystal units;

a first electrode;

and the plurality of liquid crystal cells are positioned between the first electrode and the second electrode, and the first electrode and the second electrode are used for applying an electric field to the liquid crystal cells, and the orientation of the liquid crystal cells is changed through the electric field.

3. The electronic device of claim 2, wherein the field of view adjustment means comprises a first adjustment region and a second adjustment region, the second electrode within the first adjustment region having an operating voltage that is different than the operating voltage of the second electrode within the second adjustment region.

4. The electronic device of claim 3, wherein the processor is further configured to determine a first angle and a second angle based on the target angle;

generating a first electric field between the second electrode in the first adjusting area and the first electrode through a first working voltage so as to adjust the emission angle of light rays emitted by a first display area of the display screen to be the first angle;

generating a second electric field between the second electrode in the second adjusting area and the first electrode through a second working voltage so as to adjust the emission angle of light rays emitted by a second display area of the display screen to be the second angle;

5. The electronic device according to claim 3 or 4, wherein the processor is specifically configured to:

determining a target phase shift amount according to the target angle, the wavelength of light emitted by the display screen and the distance value between the first electrode and the second electrode;

and controlling the first electrode and the second electrode to generate the electric field according to the target voltage value.

6. A display control method applied to the electronic apparatus according to any one of claims 1 to 5, characterized in that the control method comprises:

acquiring a face image;

determining a target angle according to the face image;

7. The display control method according to claim 6, wherein the field-of-view adjustment device includes a first adjustment region and a second adjustment region, the first adjustment region and the second adjustment region being determined from a face position in the face image, the control method further comprising:

Determining a first angle and a second angle according to the target angle;

the controlling the field-of-view adjusting device of the electronic device according to the target angle to adjust the emission angle of the light emitted by the display screen of the electronic device to the target angle specifically includes:

controlling the view field adjusting device according to the first angle and the second angle to adjust the emission angle of the light rays emitted by the first display area of the display screen to the first angle and adjust the emission angle of the light rays emitted by the second display area of the display screen to the second angle;

8. The display control method according to claim 7, wherein the field of view adjusting device includes a first electrode and a second electrode;

the controlling the view field adjusting device according to the first angle and the second angle to adjust the emission angle of the light emitted by the first display area of the display screen to the first angle and adjust the emission angle of the light emitted by the second display area of the display screen to the second angle specifically includes:

Determining a first target phase shift amount according to the first angle, the wavelength and the distance value of the light emitted by the display screen;

determining a second target voltage value according to the second target phase shift amount and the preset relation curve;

controlling the second electrode in the first regulation area to work according to the first target voltage value so as to generate a first electric field between the first electrode and the second electrode in the first regulation area;

controlling the second electrode in the second regulation area to work according to the second target voltage value so as to generate a second electric field between the first electrode and the second electrode in the second regulation area;

wherein the distance value is a distance value between the first electrode and the second electrode.

9. A display control apparatus applied to the electronic device according to any one of claims 1 to 5, characterized in that the control apparatus comprises:

the acquisition module is used for acquiring the face image;

and the control module is used for controlling the view field adjusting device of the electronic equipment according to the target angle so as to adjust the emission angle of the light rays emitted by the display screen of the electronic equipment to the target angle.

10. The display control apparatus according to claim 9, wherein the field-of-view adjustment device includes a first adjustment region and a second adjustment region, the first adjustment region and the second adjustment region being determined from a face position in the face image;

the determining module is specifically configured to determine a first angle and a second angle according to the target angle;

the control module is specifically configured to control the field of view adjusting device according to the first angle and the second angle, so as to adjust an emission angle of light rays emitted by a first display area of the display screen to the first angle, and adjust an emission angle of light rays emitted by a second display area of the display screen to the second angle;

11. The display control apparatus according to claim 10, wherein the field of view adjusting device includes a first electrode and a plurality of second electrodes;

the determining module is specifically configured to:

determining a first target phase shift according to the first angle, the wavelength of light emitted by the display screen and a distance value, wherein the distance value is a distance value between the first electrode and the second electrode;

the control module is specifically configured to:

12. A readable storage medium, characterized in that it stores thereon a program or instructions which, when executed by a processor, implement the steps of the method according to any of claims 6 to 8.