CN107230424B

CN107230424B - Display apparatus and display method

Info

Publication number: CN107230424B
Application number: CN201610180429.2A
Authority: CN
Inventors: 李国盛; 江忠胜; 王刚
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2016-03-25
Filing date: 2016-03-25
Publication date: 2020-03-03
Anticipated expiration: 2036-03-25
Also published as: CN107230424A

Abstract

The disclosure relates to a display device and a display method, and belongs to the technical field of image display. The present disclosure provides a display apparatus including a control unit, a display driving unit and a human eye position determining unit connected to the control unit, a display panel connected to the display driving unit, and a barrier panel positioned over the display panel; the control unit is used for sending display image frames to the display driving unit; the control unit is also used for determining the position of the target human eye through the human eye position determining unit; determining the positions of a plurality of display areas which are arranged in parallel and at intervals in the display panel according to the positions of target human eyes and the structural characteristics of the barrier panel, wherein each display area is used for respectively displaying a part of display content in an image frame; a position determination instruction indicating a position of each display region is sent to the display drive unit. The present disclosure provides a display device that provides a visible range of narrow viewing angles.

Description

Display apparatus and display method

Technical Field

The present disclosure relates to the field of image display technologies, and in particular, to a display device and a display method.

Background

A display screen is one of the most common input and output devices on an electronic device. The display screen has the capability of displaying text information, image information and video information.

The current display screen is a wide-viewing-angle display screen generally, and the viewing angle is approximately in the range of 120-170 degrees. When a user uses the electronic device in a crowded place such as a bus and a subway, the user is likely to be seen by other people around the user to see the content on the display screen, and the privacy of the user is leaked.

Disclosure of Invention

In order to solve the problem that when a display screen is a wide-viewing-angle display screen, other people around the display screen can easily see contents on the display screen, which causes the privacy of a user to be revealed, the embodiment of the disclosure provides a display device and a display method. The technical scheme is as follows:

according to a first aspect of embodiments of the present disclosure, there is provided a display apparatus including: the human eye position detection device comprises a control unit, a display driving unit and a human eye position determination unit which are connected with the control unit, a display panel connected with the display driving unit, and a barrier panel positioned above the display panel;

the control unit is used for sending display image frames to the display driving unit;

the control unit is also used for determining the position of the target human eye through the human eye position determining unit; determining the positions of a plurality of display areas which are arranged in parallel and at intervals in the display panel according to the positions of the target human eyes and the structural characteristics of the barrier panel, wherein each display area is used for respectively displaying a part of display content in the display image frame; sending a position determination instruction to the display driving unit, the position determination instruction being used to indicate a position of each display region;

the display driving unit is used for determining the position of each display area on the display panel according to the position determination instruction; splitting the display image frame to obtain display contents respectively corresponding to each display area; driving each display area to respectively display the corresponding display content according to the position;

the display content displayed in each display area is projected to the visual range of the target human eyes through the barrier panel.

Optionally, the control unit is configured to acquire, by the human eye position determining unit, an image in a region right in front of the display panel; identifying a face contained in the image; when the number of the human faces is one, determining human eyes in the human faces as the target human eyes; and when the number of the human faces is multiple, selecting the human faces which are positioned in the central area of the image and are closest to the display panel, and determining the human eyes in the selected human faces as the target human eyes.

Optionally, the barrier panel is a liquid crystal barrier panel in which a plurality of liquid crystal barrier regions are distributed in parallel and arranged at intervals;

the control unit is used for determining the position of each display area in the display panel according to the position of the target human eye, the position of each liquid crystal barrier area and the distance between the liquid crystal barrier panel and the display panel.

Optionally, the display device further comprises: a barrier driving unit; the barrier driving unit is respectively connected with the control unit and the liquid crystal barrier panel;

the control unit is also used for sending a barrier control instruction to the barrier driving unit;

the barrier driving unit is used for controlling the liquid crystal barrier panel to form liquid crystal barriers on the plurality of liquid crystal barrier areas which are arranged in parallel and at intervals according to the barrier control instruction, so that the display content displayed by each display area is projected to the visible range where the target human eyes are located through the light transmission area between two adjacent liquid crystal barrier areas on the liquid crystal barrier panel.

Optionally, the control unit is further configured to send a state switching instruction to the display driving unit and the barrier driving unit when the working state is switched from the narrow viewing angle working state to the wide viewing angle working state;

the display driving unit is used for driving the display panel to display the display image frame on the whole display area after receiving the state switching instruction;

and the barrier driving unit is used for driving the liquid crystal barrier panel to cancel the formation of the liquid crystal barrier after receiving the state switching indication.

Optionally, the barrier panel is a liquid crystal lens array including a plurality of liquid crystal lenses arranged in parallel;

the control unit is used for determining the position of each display area in the display panel according to the position of the target human eye, the position of each liquid crystal lens and the refractive index of each liquid crystal lens.

Optionally, the display device further comprises: a lens driving unit; the lens driving unit is respectively connected with the control unit and the liquid crystal lens array;

the control unit is also used for sending a lens control instruction to the lens driving unit;

the lens driving unit is used for controlling the refractive index of each liquid crystal lens according to the lens control instruction, so that the display content displayed in each display area is projected to the visual range of the target human eyes through the refraction of the corresponding liquid crystal lens.

Optionally, the control unit is further configured to send a state switching instruction to the display driving unit and the lens driving unit when the operating state is switched from the narrow viewing angle operating state to the wide viewing angle operating state;

and the lens driving unit is used for adjusting the refractive index of each liquid crystal lens after receiving the state switching instruction, so that the light rays corresponding to the display panel are emitted along a straight line.

Optionally, the barrier panel is a film material on which a plurality of display barriers are distributed in parallel and at intervals;

the control unit is used for determining the position of each display area in the display panel according to the position of the target human eye, the position of each display barrier and the distance between the film and the display panel.

Optionally, the display driving unit is further configured to drive an idle area between two adjacent display areas on the display panel to be in an inactive state, or drive the idle area between two adjacent display areas on the display panel to display predetermined disguised display content.

According to a second aspect of the embodiments of the present disclosure, there is provided a display method applied to a display apparatus, the display apparatus including: the human eye position detection device comprises a control unit, a display driving unit and a human eye position determination unit which are connected with the control unit, a display panel connected with the display driving unit, and a barrier panel positioned above the display panel;

the method comprises the following steps:

the control unit sends a display image frame to the display driving unit;

the control unit determines the position of the target human eye through the human eye position determination unit; determining the positions of a plurality of display areas which are arranged in parallel and at intervals in the display panel according to the positions of the target human eyes and the structural characteristics of the barrier panel, wherein each display area is used for respectively displaying a part of display content in the display image frame; sending a position determination instruction to the display driving unit, the position determination instruction being used to indicate a position of each display region;

the display driving unit determines the position of each display area on the display panel according to the position determination instruction; splitting the display image frame to obtain display contents respectively corresponding to each display area; driving each display area to respectively display the corresponding display content according to the position;

Optionally, the determining, by the eye position determining unit, the position of the target eye by the control unit includes:

the control unit acquires an image in a region right in front of the display panel through the human eye position determining unit;

the control unit identifies a face contained in the image;

when the number of the human faces is one, the control unit determines human eyes in the human faces as the target human eyes;

when the number of the faces is multiple, the control unit selects the face which is located in the central area of the image and is closest to the display panel, and determines the human eyes in the selected faces as the target human eyes.

the control unit determines the positions of a plurality of display areas which are arranged in parallel and at intervals in the display panel according to the positions of the target human eyes and the structural characteristics of the barrier panel, and the method comprises the following steps:

and the control unit determines the position of each display area in the display panel according to the position of the target human eye, the position of each liquid crystal barrier area and the distance between the liquid crystal barrier panel and the display panel.

the method further comprises the following steps:

the control unit sends a barrier control instruction to the barrier driving unit;

the barrier driving unit controls the liquid crystal barrier panel to form liquid crystal barriers on the plurality of liquid crystal barrier areas which are arranged in parallel and at intervals according to the barrier control instruction, so that the display content displayed by each display area is transmitted to the visible range where the target human eyes are located through the light transmission area between two adjacent liquid crystal barrier areas on the liquid crystal barrier panel.

Optionally, the method further comprises:

when the working state is switched from the narrow visual angle working state to the wide visual angle working state, the control unit sends a state switching instruction to the display driving unit and the barrier driving unit;

the display driving unit drives the display panel to display the display image frame on the whole display area after receiving the state switching instruction;

and the barrier driving unit drives the liquid crystal barrier panel to cancel the formation of the liquid crystal barrier after receiving the state switching indication.

the control unit determines the position of each display area in the display panel according to the position of the target human eye, the position of each liquid crystal lens and the refractive index of each liquid crystal lens.

the method further comprises the following steps:

the control unit sends a lens control instruction to the lens driving unit;

the lens driving unit controls the refractive index of each liquid crystal lens according to the lens control instruction, so that the display content displayed in each display area is projected to the visual range where the target human eyes are located through refraction of the corresponding liquid crystal lens.

Optionally, the method further comprises:

when the working state is switched from the narrow visual angle working state to the wide visual angle working state, the control unit sends a state switching instruction to the display driving unit and the lens driving unit;

and after receiving the state switching instruction, the lens driving unit adjusts the refractive index of each liquid crystal lens, so that the light rays corresponding to the display panel are emitted along a straight line.

the control unit determines the position of each display area in the display panel according to the position of the target human eye, the position of each display barrier and the distance between the film and the display panel.

Optionally, the method further comprises:

the display driving unit drives an idle area between two adjacent display areas on the display panel to be in a non-operating state;

or,

the display driving unit drives an idle area between two adjacent display areas on the display panel to display preset camouflage display contents.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

the method comprises the steps that a control unit sends display image frames to a display driving unit, a human eye position determining unit determines the positions of target human eyes, the positions of a plurality of display areas which are arranged in parallel and at intervals in a display panel are determined according to the positions of the target human eyes and the structural characteristics of a barrier panel, then a position determining instruction is sent to the display driving unit, the display driving unit determines the positions of the display areas on the display panel according to the position determining instruction, the display image frames are split, display contents corresponding to the display areas are obtained, and finally the display areas are driven to display the corresponding display contents respectively according to the positions; the display content displayed in each display area is projected to the visual range of the eyes of the target person through the barrier panel; the problem that when the display screen is a wide-viewing-angle display screen, other people around the display screen can easily see the content on the display screen, so that the privacy of a user is revealed is solved; the visual range of the display panel is limited within the visual range of the target human eyes, and the display image frames on the display panel cannot be seen or cannot be seen completely outside the visual range of the target human eyes, so that the display image frames on the display panel are only completely visible for the target user, and the leakage of the privacy of the user is avoided.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

FIG. 1 is a block diagram illustrating a display device according to an exemplary embodiment;

FIG. 2 is a block diagram illustrating a display device according to another exemplary embodiment;

FIG. 3 is a schematic diagram of the operation of the display device according to the embodiment shown in FIG. 2;

FIG. 4 is a schematic diagram illustrating the effect of the displayed image frame in the display device according to the embodiment shown in FIG. 2;

FIG. 5A is a schematic diagram of a display device according to the embodiment shown in FIG. 2;

FIG. 5B is a schematic diagram of the operation of the display device according to the embodiment of FIG. 2 when the position of the target eye is changed;

FIG. 6 is a block diagram illustrating a display device according to another exemplary embodiment;

FIG. 7 is a block diagram illustrating a display device according to another exemplary embodiment;

FIG. 8 is a schematic diagram of the operation of the display device according to the embodiment shown in FIG. 7;

FIG. 9A is a schematic diagram of a display device according to the embodiment shown in FIG. 7;

FIG. 9B is a schematic diagram of the operation of the display device according to the embodiment of FIG. 7 when the position of the target eye is changed;

FIG. 10 is a flow chart illustrating a display method according to an exemplary embodiment;

FIG. 11 is a flow chart illustrating a display method according to another exemplary embodiment;

fig. 12 is a flowchart illustrating a display method according to another exemplary embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

Embodiments of the present disclosure are directed to providing a display apparatus and a display method having a narrower viewing angle. Optionally, the display device can also be switched between a wide viewing angle mode and a narrow viewing angle mode. The display device may be any electronic device with a display screen, such as a mobile phone, a tablet computer, and the like.

Fig. 1 is a block diagram illustrating a display device 100 according to an exemplary embodiment. As shown in fig. 1, the display device 100 includes:

a control unit 120, a display driving unit 142 and a human eye position determining unit 146 connected to the control unit 120, a display panel 144 connected to the display driving unit 142, and a barrier panel 164 positioned on the display panel 144.

A control unit 120 for sending the display image frame to the display driving unit 142.

The control unit 120 is further configured to determine the position of the target human eye through the human eye position determination unit 146; determining the positions of a plurality of display areas arranged in parallel and at intervals in the display panel 144 according to the positions of the target human eyes and the structural characteristics of the barrier panel 164, wherein each display area is used for respectively displaying a part of display contents in the image frame; a position determination instruction indicating the position of each display region is sent to the display drive unit 142.

A display driving unit 142 for determining the position of each display region on the display panel 144 according to the position determination instruction; splitting the display image frame to obtain display contents respectively corresponding to each display area; and driving each display area to respectively display the corresponding display content according to the position.

The display content displayed in each display area is transmitted through the barrier panel 164 to the visible range of the target human eye.

In summary, in the display device provided in this embodiment, the control unit sends the display image frame to the display driving unit, the human eye position determining unit determines the position of the target human eye, the positions of the plurality of display areas arranged in parallel and at intervals in the display panel are determined according to the position of the target human eye and the structural characteristics of the barrier panel, then a position determining instruction is sent to the display driving unit, the display driving unit determines the position of each display area on the display panel according to the position determining instruction, splits the display image frame to obtain the display content corresponding to each display area, and finally drives each display area to display the corresponding display content according to the position; the display content displayed in each display area is projected to the visual range of the eyes of the target person through the barrier panel; the problem that when the display screen is a wide-viewing-angle display screen, other people around the display screen can easily see the content on the display screen, so that the privacy of a user is revealed is solved; the visual range of the display panel is limited within the visual range of the target human eyes, and the display image frames on the display panel cannot be seen or cannot be seen completely outside the visual range of the target human eyes, so that the display image frames on the display panel are only completely visible for the target user, and the leakage of the privacy of the user is avoided.

In the disclosed embodiment, three different implementations of the barrier panel are provided. In the following, three different embodiments are described and illustrated, respectively.

Fig. 2 is a block diagram illustrating a display apparatus 200 according to another exemplary embodiment. As shown in fig. 2, the display device 200 includes:

a control unit 120, a display driving unit 142 and a human eye position determining unit 146 connected to the control unit 120, a display panel 144 connected to the display driving unit 142, and a barrier panel 164 positioned on the display panel 144. In the present embodiment, the barrier panel 164 is a liquid crystal barrier panel 164a having a plurality of liquid crystal barrier regions arranged in parallel and at intervals.

The control unit 120 may be a processor or a graphics processor. The control unit 120 has the capability of outputting display image frames and issuing control instructions.

The display driving unit 142 includes a driving circuit for driving the display panel 144 to display. The Display panel 144 may be an LCD (Liquid Crystal Display) panel or an OLED (Organic Light-emitting Display) panel. Optionally, when the display panel 144 is an LCD panel, the display device 200 further includes a backlight positioned below the LCD panel.

The human eye position determination unit 146 may be composed of a single or a plurality of cameras. The human eye position determination unit 146 is used to acquire images in the region directly in front of the display panel 144. The human eye position determination unit 146 is, for example, a front camera of the display apparatus 200. The camera can be a common camera or an infrared camera.

In the present embodiment, the barrier panel 164 is a liquid crystal barrier panel 164a having a plurality of liquid crystal barrier regions arranged in parallel and at intervals. When the barrier panel 164 is a liquid crystal barrier panel 164a, as shown in fig. 2, the display device 200 further includes: a barrier driving unit 162. The barrier driving unit 162 is connected to the control unit 120 and the liquid crystal barrier panel 164a, respectively.

The barrier driving unit 162 includes a barrier driving circuit, which is also one of liquid crystal driving circuits, for driving the liquid crystal barrier panel 164a to form a liquid crystal barrier. The liquid crystal barrier is a parallax barrier that does not transmit light or has light transmittance lower than a predetermined condition. The liquid crystal barrier is formed by driving liquid crystal molecules in the liquid crystal barrier panel 164a to be twisted by the barrier driving unit 162.

When the barrier panel 164 is a liquid crystal barrier panel 164a having a plurality of liquid crystal barrier regions 163 arranged in parallel and at intervals, referring to fig. 3, fig. 3 shows an operation diagram of the display panel 144 and the liquid crystal barrier panel 164a in a narrow viewing angle operation state. The left side (a) portion in fig. 2 is a schematic side view of the display panel 144 and the liquid crystal barrier panel 164 a. The liquid crystal barrier panel 164a is positioned above the display panel 144. The upper right (b) portion in fig. 2 is a schematic front view of the liquid crystal barrier panel 164 a; the lower right (c) portion in fig. 2 is a schematic front view of the display panel 144.

When in the narrow viewing angle operating state, the control unit 120 sends a display image frame to the display driving unit 142; the control unit 120 also determines the position of the target human eye through the human eye position determining unit 146; determining the positions of a plurality of display areas 143 arranged in parallel and at intervals in the display panel 144 according to the positions of target human eyes and the structural characteristics of the barrier panel 164, wherein each display area 143 is used for displaying a part of display content of an image frame; a position determination instruction for indicating the position of each display area 143 is sent to the display drive unit 142.

In an actual operation process, the human eye position determining unit 146 is configured to acquire an image in a region right in front of the display panel 144, and the image acquired by the human eye position determining unit 146 may only include one human face or may include a plurality of human faces. Optionally, the control unit 120 is configured to identify a face contained in the image; when the number of the human faces is one, determining human eyes in the human faces as target human eyes; and when the number of the faces is multiple, selecting the face which is positioned in the central area of the image and is closest to the display panel, and determining the eyes in the selected face as target eyes.

In one possible embodiment, the human eye position determination unit 146 is provided with at least two distance sensors for acquiring the distance between the target human eye and the display panel 144 and the position of the target human eye relative to the display panel 144.

In order to ensure the distance acquisition accuracy, the end surface of the distance sensor is located on the same plane as the display panel 144. Wherein the distance sensor includes, but is not limited to, at least one of an ultrasonic distance sensor, an infrared distance sensor, and a laser distance sensor. The principles of the various distance sensors are similar, and the distance sensors comprise an emitter and a receiver, wherein sound waves or light rays emitted by the emitter are reflected after passing through a front object, and the receiver receives the reflected sound waves or light rays. According to the time difference between the transmitting and receiving, the distance of the front object can be calculated.

A display driving unit 142 for determining the position of each display region 143 on the display panel 144 according to the position determination instruction; splitting the display image frame to obtain display contents respectively corresponding to each display area 143; each display area 143 is driven to display the respective display content according to the position. The union of the display contents displayed by all the display areas 143 is the same as the display image frame.

In other words, the display image frame is divided into a plurality of bar-shaped display contents, each of which is displayed in one of the display areas 143. Each display area 143 is a rectangular bar-shaped display area. The idle region 145 between two adjacent display regions 143 may not display any content.

In one possible embodiment, the length and width of each display area 143 are the same. For example, each display region 143 has a length of 1080 pixels and a width of 5 pixels. The width of the idle regions 145 between each display region 143 is also the same, for example, the width of each idle region 145 is 3 pixels. In another possible embodiment, there are at least two display areas 143 that are the same length but different widths. For example, the width of the display region 143 located at the central region of the display panel 144 is greater than the width of the display region 143 located at the edge region of the display panel 144. There are at least two idle areas 145 that are the same length but different widths. For example, the width of the idle region 145 located at the central region of the display panel 144 is greater than the width of the idle region 145 located at the edge region of the display panel 144. This embodiment is not limited to this.

The control unit 120 is further configured to send a barrier control instruction to the barrier driving unit 162. The barrier driving unit 162 is configured to receive the barrier control instruction sent by the control unit 120, and control the liquid crystal barrier panel 164a to form a liquid crystal barrier on the plurality of liquid crystal barrier regions 163 arranged in parallel and at intervals according to the barrier control instruction. The liquid crystal barrier is a parallax barrier that does not transmit light or has light transmittance lower than a predetermined condition. The liquid crystal barrier can block the display content below the liquid crystal barrier.

In one possible embodiment, the length and width of each liquid crystal barrier region 163 are the same, for example, each liquid crystal barrier region 163 has a length of 1080 pixels and a width of 2 pixels. The width of the light transmission region 166 between each liquid crystal barrier region 163 is also the same, for example, the width of each light transmission region 166 is 3 pixels. In another possible embodiment, there are at least two liquid crystal barrier regions 163 having the same length but different widths, for example, the width of the liquid crystal barrier region 163 located at the central region of the liquid crystal barrier panel 164a is greater than the width of the liquid crystal barrier region 163 located at the edge region of the liquid crystal barrier panel 164 a. There are at least two light transmission regions 166 having the same length but different widths, for example, the width of the light transmission region 166 positioned at the central region of the liquid crystal barrier panel 164a is greater than the width of the light transmission region 166 positioned at the edge region of the liquid crystal barrier panel 164 a. This embodiment is not limited to this.

The display content displayed in each display region 143 is transmitted through the light-transmitting region 166 between two adjacent liquid crystal barrier regions 163 on the liquid crystal barrier panel 164a to the visible range of the target human eye. That is, the display image frame 10 is divided into a plurality of pieces of display contents to be displayed when displayed by the display device 200, and the front view of the final display screen 20 may refer to the schematic illustration in fig. 4. In the actual use process, the width of the liquid crystal barrier between the two display contents is small, so that the influence caused by the final display effect observed by naked eyes of a user can be reduced as much as possible.

With continued reference to fig. 5A, let the left side in fig. 5A be the first direction and the right side be the second direction. Each display area 143 has an edge a in the first direction and an edge b in the second direction; two liquid crystal barrier regions 163 are provided above each display region 143. One of the liquid crystal barrier regions 163 has an edge c in the second direction, and the other liquid crystal barrier region 163 has an edge d in the first direction; the visual range in which the target human eye is located has an edge e in the first direction and an edge f in the second direction.

For each display area 143, the rule is satisfied between the edges: the edge a, the edge c and the edge e are located in the same plane, and the edge b, the edge d and the edge f are located in the same plane, so that the display content in each display area 143 is ensured to be completely visible only in the visible range of the target human eye. It should be noted that the design of the display area 143 at the extreme edge may be different from that of fig. 5A.

In addition, since the visible range in which the target human eye is located is an area for both eyes of the target user to view, the width of the visible range in which the target human eye is located is set according to the eye distance of the target user, and the width ef is generally slightly larger than the eye distance of the target user. That is, the visible range in which the target human eye is located is a range set according to the binocular distance of the target user. The target user refers to a user with a human face containing target human eyes.

In the present embodiment, the barrier panel 164 is a liquid crystal barrier panel 164a distributed with a plurality of liquid crystal barrier regions 163 arranged in parallel and at intervals. Accordingly, the control unit 120 is configured to determine the positions of the display areas 143 in the display panel 144 according to the rule shown in fig. 5A according to the position of the target human eye, the positions of the liquid crystal barrier areas 163, and the distance L between the liquid crystal barrier panel 164a and the display panel 144. The position of the target human eye includes a binocular pitch ef of the target human eye, a projection coordinate of the target human eye on the barrier panel 164 (i.e., the liquid crystal barrier panel 164a in this embodiment), and a distance G between the target human eye and the barrier panel 164 (i.e., the liquid crystal barrier panel 164a in this embodiment). Alternatively, when the position of the target human eye changes, referring to fig. 5B in combination, the control unit 120 is configured to determine the positions of the display areas 143 in the display panel 144 according to the rule shown in fig. 5A according to the position of the target human eye, the positions of the liquid crystal barrier areas 163, and the distance L between the liquid crystal barrier panel 164a and the display panel 144.

In addition, the control unit 120 is further configured to send a barrier control instruction to the barrier driving unit 162. The barrier driving unit 162 is configured to control the liquid crystal barrier panel 164a to form a liquid crystal barrier on a plurality of liquid crystal barrier regions 163 arranged in parallel and at intervals according to the barrier control instruction, so that the display content displayed by each display region 143 is transmitted through the light transmission region 166 between two adjacent liquid crystal barrier regions 163 on the liquid crystal barrier panel 164a to the visible range where the target human eye is located.

When the barrier panel 164 is a liquid crystal barrier panel 164a, the display device 200 has two operation modes: a wide view angle mode of operation and a narrow view angle mode of operation. The display device 200 can be switched between the two operating modes described above.

When switching from the wide viewing angle operating mode to the narrow viewing angle operating mode, the control unit 120 sends a first state switching instruction to the display driving unit 142 and the barrier driving unit 162, and the display driving unit 142 and the barrier driving unit 162 operate according to the above-described operating manner.

When switching from the narrow viewing angle operating mode to the wide viewing angle operating mode, the control unit 120 sends a second state switching instruction to the display driving unit 142 and the barrier driving unit 162. And a display driving unit 142, configured to drive the display panel 144 to display a display image frame on the entire display area after receiving the second state switching instruction, that is, in a normal operation mode. And a barrier driving unit 162 for driving the liquid crystal barrier panel 164a to cancel forming the liquid crystal barrier after receiving the second state switching indication, that is, the entire liquid crystal barrier panel 164a is in a transparent state or a semi-transparent state having light transmittance higher than a predetermined value.

The embodiment can meet the display requirements of users in different use scenes by providing two optional working modes.

Alternatively, when the display apparatus 200 is in the narrow viewing angle operation mode, the idle region 145 between two adjacent display regions 143 in the display panel 144 may display predetermined disguised display contents for viewing in a range outside the visible range in which the eyes of the subject are positioned. Disguised display content may disguise displayed image frames displayed within the display area 143, such as: the displayed image frame is a game picture, the camouflage display content is a webpage picture, the game picture is seen in the visible range of the eyes of the target, but the webpage picture is seen in the range outside the visible range of the eyes of the target.

Fig. 6 is a block diagram illustrating a display apparatus 300 according to another exemplary embodiment. As shown in fig. 3, the display device 300 includes:

a control unit 120, a display driving unit 142 and a human eye position determining unit 146 connected to the control unit 120, a display panel 144 connected to the display driving unit 142, and a barrier panel 164 positioned on the display panel 144. In this embodiment, the barrier panel 164 is a film 164b on which a plurality of display barriers are distributed in parallel and at intervals.

For the description and illustration of the control unit 120, the display driving unit 142, the human eye position determining unit 146, and the display panel 144, reference may be made to the embodiment shown in fig. 2, and details are not repeated here.

In this embodiment, the barrier panel 164 is a film 164b on which a plurality of display barriers are distributed in parallel and at intervals. The display barriers on the barrier panel 164 can obscure the display content located therebelow. The display barrier on the barrier panel 164 has poor light transmittance, and the display barrier may be made of a material that is translucent, opaque, or blurry above a first threshold. The area between two adjacent display barriers is a light transmission area, and the light transmission area has better light transmission. For example, the light transmittance of the light-transmitting region is greater than a second threshold, such as 80%.

In one possible embodiment, the length and width of each display barrier are the same. For example, each display barrier has a length of 1080 pixels and a width of 2 pixels. The width of the light-transmitting region between each display barrier is also the same, for example, the width of each light-transmitting region is 3 pixels. In another possible embodiment, there are at least two display barriers that are the same length but different widths. For example, the width of the display barrier located at the central region of the barrier panel 164 is greater than the width of the display barrier located at the edge region of the barrier panel 164. There are at least two light-transmitting regions of the same length but different widths. For example, the width of the light-transmitting area located at the central region of the barrier panel 164 is greater than the width of the light-transmitting area located at the edge region of the barrier panel 164. This embodiment is not limited to this.

The principle of providing a narrow viewing angle and a visible range by the display device 300 is the same as that in the embodiment shown in fig. 2, and is described and illustrated in the embodiment shown in fig. 2, and will not be described herein again.

In this embodiment, the control unit 120 is configured to determine the position of each display area in the display panel 144 according to the position of the target human eye, the position of each display barrier, and the distance between the film 164b and the display panel 144.

Unlike the embodiment shown in fig. 2, in the embodiment shown in fig. 2, since the liquid crystal barrier in the liquid crystal barrier panel can be formed or de-formed under the control of the barrier driving unit, the embodiment shown in fig. 2 provides a display device that can be switched between a wide viewing angle operation mode and a narrow viewing angle operation mode. In the present embodiment, since the display barrier is fixedly formed in the film material, the display device provided in the present embodiment only has the narrow viewing angle operating mode, and cannot be switched between the wide viewing angle operating mode and the narrow viewing angle operating mode.

Fig. 7 is a block diagram illustrating a display apparatus 400 according to another exemplary embodiment. As shown in fig. 7, the display apparatus 400 includes:

a control unit 120, a display driving unit 142 and a human eye position determining unit 146 connected to the control unit 120, a display panel 144 connected to the display driving unit 142, and a barrier panel 164 positioned on the display panel 144. The barrier panel 164 is a liquid crystal lens array 164c including a plurality of liquid crystal lenses arranged in parallel.

In the present embodiment, the barrier panel 164 is a liquid crystal lens array 164c including a plurality of liquid crystal lenses arranged in parallel. When the barrier panel 164 is the liquid crystal lens array 164c, as shown in fig. 7, the display device 400 further includes: a lens driving unit 165. The lens driving unit 165 is connected to the control unit 120 and the liquid crystal lens array 164c, respectively. The lens driving unit 165 includes a lens driving circuit, which is also one of liquid crystal driving circuits, for controlling the refractive index of each liquid crystal lens in the liquid crystal lens array 164 c. The refractive index of each liquid crystal lens is realized by controlling the deflection direction of the liquid crystal molecules.

Referring to fig. 8 in combination, fig. 8 shows an operation diagram of the display panel 144 and the liquid crystal lens array 164c in a narrow viewing angle operation state. The left-hand portion (a) in fig. 8 is a schematic side view of the display panel 144 and the liquid crystal lens array 164 c. The liquid crystal lens array 164c is positioned above the display panel 144. The upper right (b) portion in fig. 8 is a schematic front view of the liquid crystal lens array 164 c; the lower right (c) portion in fig. 8 is a schematic front view of the display panel 144.

When in the narrow viewing angle operating state, the control unit 120 sends a display image frame to the display driving unit 142; the control unit 120 also acquires an image in a region directly in front of the display panel 144 through the human eye position determination unit 146; selecting a target human eye from the image; determining the positions of a plurality of display areas 143 arranged in parallel and at intervals in the display panel 144 according to the positions of target human eyes and the structural characteristics of the barrier panel 164, wherein each display area 143 is used for displaying a part of display content of an image frame; a position determination instruction for indicating the position of each display region 143 is sent to the display drive unit.

The display driving unit 142 is configured to drive the display panel 144 to display a display image frame on a plurality of display areas 143 arranged in parallel and at intervals, where each display area 143 is configured to display a portion of display content in the display image frame. The union of the display contents displayed by all the display areas 143 is the same as the display image frame.

And a control unit 120 for sending a lens control command to the lens driving unit 165. And a lens driving unit 165, configured to receive the lens control instruction sent by the control unit 120, and control the refractive index of each liquid crystal lens 167 according to the lens control instruction. The lens driving unit 165 controls the refractive index of each liquid crystal lens 167 by controlling the deflection direction of the liquid crystal molecules in each liquid crystal lens 167.

In one possible embodiment, the length and the width of each liquid crystal lens 167 are the same, for example, the length of each liquid crystal lens 167 is 1080 pixels, and the width is 5 pixels. In another possible embodiment, there are at least two liquid crystal lenses 167 having the same length but different widths, such as the liquid crystal lens 167 located in the central region of the liquid crystal lens array 164c having a width greater than the width of the liquid crystal lens 167 located in the edge region of the liquid crystal lens array 164 c. The embodiments of the present disclosure do not limit this.

The display content displayed in each display region 143 is refracted by the liquid crystal lens 167 to be directed to the visible range where the target human eye is located. That is, the display image frame 10 is divided into a plurality of pieces of display contents to be displayed when displayed by the display device, and the front view of the final display screen 20 can be referred to as the schematic illustration in fig. 4.

With continued reference to fig. 9A, let the left side in fig. 9A be the first direction and the right side be the second direction. Each display area 143 has an edge a in the first direction and an edge b in the second direction; each idle region 145 has an edge g in the first direction and an edge h in the second direction; each liquid crystal lens 167 has at least one display area 143 and one idle area 145 below it. Wherein each liquid crystal lens 167 has an edge c in the first direction and an edge d in the second direction. The visual range in which the target human eye is located has an edge e in the first direction and an edge f in the second direction.

For each display area 143, the rule is satisfied between the edges: the display content at the edge a of the display area 143 is projected to between the edges ef through the liquid crystal lens 167 with the edge cd, and the display content at the edge b of the display area 143 is projected to between the edges ef through the liquid crystal lens 167 with the edge cd, thereby ensuring that the display content in each display area 143 is completely visible only in the visible range of the targeted human eye. Note that the design of the display area 143 located at the most edge may be different from that of fig. 9A.

In the present embodiment, the barrier panel 164 is a liquid crystal lens array 164c including a plurality of liquid crystal lenses arranged in parallel. Accordingly, the control unit 120 is configured to determine the positions of the display regions 143 in the display panel 144 according to the position of the target human eye, the positions of the liquid crystal lenses 167, and the refractive indexes of the liquid crystal lenses 167. Wherein the position of the target human eye comprises: a binocular pitch ef of the target human eyes, projection coordinates of the target human eyes on the barrier panel 164 (i.e., the liquid crystal lens array 164c in the present embodiment), and a distance G between the target human eyes and the barrier panel 164 (i.e., the liquid crystal lens array 164c in the present embodiment). The position of each liquid crystal lens 167 includes the width and relative positional arrangement of each liquid crystal lens 167.

Further, the control unit 120 is also used to send lens control instructions to the lens driving unit 165. The lens driving unit 165 is configured to control the refractive index of each liquid crystal lens 167 according to the lens control instruction, so that the display content displayed in each display region 143 is transmitted through the liquid crystal lens array 164c to the visible range where the target human eye is located.

Alternatively, when the position of the target human eye changes, with reference to fig. 9B, the control unit 120 dynamically determines the position of each display region 143 according to the rule shown in fig. 9A according to the binocular pitch ef of the target user, the projection coordinates of the human eye on the liquid crystal lens array 164c, the distance G between the human eye and the liquid crystal lens array 164c, and the positions and refractive indexes of the liquid crystal lenses 167.

When the barrier panel 164 is a liquid crystal lens array 164c including a plurality of liquid crystal lenses arranged in parallel, the display device 400 has two operation modes: a wide view angle mode of operation and a narrow view angle mode of operation. The display device 400 may be switched between the two operating modes described above.

When switching from the wide viewing angle operation mode to the narrow viewing angle operation mode, the control unit 120 sends a first state switching instruction to the display driving unit 142 and the lens driving unit 165, and the display driving unit 142 and the lens driving unit 165 operate in the above-described operation manner.

When switching from the narrow viewing angle operation mode to the wide viewing angle operation mode, the control unit 120 sends a second state switching instruction to the display driving unit 142 and the lens driving unit 165. And a display driving unit 142, configured to drive the display panel 144 to display a display image frame on the entire display area after receiving the second state switching instruction, that is, in a normal operation mode. The lens driving unit 165 is configured to adjust the refractive index of each liquid crystal lens 167 after receiving the second state switching instruction, so that the light corresponding to the display panel 144 is emitted along a straight line.

In the three embodiments shown in fig. 2, 6 and 7, three different implementations of the barrier panel are provided, each providing a narrow viewing angle. In addition, the position of the target human eye is obtained through the image acquired by the human eye position determining unit, so that the visual range is dynamically adjusted according to the position of the target human eye, the method is more flexible, and the visual experience of a user is improved.

In addition, in order to prevent shaking, when the target human eyes are adjusted (such as moved or changed), the control unit obtains the adjustment distance of the target human eyes, when the adjustment distance is greater than a preset value, the positions of all the display areas in the display panel are determined again according to the positions of the adjusted target human eyes and the structural characteristics of the barrier panel, otherwise, when the adjustment distance is less than the preset value, the positions of all the original display areas are kept unchanged.

FIG. 10 is a flow chart illustrating a display method according to an exemplary embodiment. The method is applied to a display device, and the display device comprises: the display device comprises a control unit, a display driving unit and a human eye position determining unit which are connected with the control unit, a display panel connected with the display driving unit, and a barrier panel positioned on the display panel. The method may include the following steps.

In step 1001, the control unit transmits a display image frame to the display driving unit.

In step 1002, the control unit determines the position of the target human eye by the human eye position determination unit; determining the positions of a plurality of display areas which are arranged in parallel and at intervals in the display panel according to the positions of target human eyes and the structural characteristics of the barrier panel, wherein each display area is used for respectively displaying a part of display content in an image frame; a position determination instruction indicating a position of each display region is sent to the display drive unit.

In step 1003, the display driving unit determines the position of each display region on the display panel according to the position determination instruction; splitting the display image frame to obtain display contents respectively corresponding to each display area; and driving each display area to respectively display the corresponding display content according to the position.

In summary, in the display method provided in this embodiment, a control unit sends display image frames to a display driving unit, a human eye position determining unit determines positions of target human eyes, positions of a plurality of display areas arranged in parallel and at intervals in a display panel are determined according to the positions of the target human eyes and structural features of a barrier panel, and then a position determining instruction is sent to the display driving unit, the display driving unit determines positions of the display areas on the display panel according to the position determining instruction, splits the display image frames to obtain display contents corresponding to each display area, and finally drives each display area to display the corresponding display contents according to the positions; the display content displayed in each display area is projected to the visual range of the eyes of the target person through the barrier panel; the problem that when the display screen is a wide-viewing-angle display screen, other people around the display screen can easily see the content on the display screen, so that the privacy of a user is revealed is solved; the visual range of the display panel is limited within the visual range of the target human eyes, and the display image frames on the display panel cannot be seen or cannot be seen completely outside the visual range of the target human eyes, so that the display image frames on the display panel are only completely visible for the target user, and the leakage of the privacy of the user is avoided.

In an alternative embodiment provided based on the embodiment shown in fig. 10, as shown in fig. 11, the method includes:

in step 1101, the control unit sends a display image frame to the display driving unit.

Since the display stream usually includes an image frame sequence consisting of one frame by one frame of display image frames, this step is performed periodically a plurality of times or when the display image frames change.

For example, the control unit performs this step every 1/24 seconds.

In step 1102, the control unit acquires an image in a front area of the display panel through the human eye position determination unit.

In step 1103, the control unit selects a target human eye from the above-described image.

In a possible embodiment, the control unit identifies a face of a person contained in the image. When the number of the human faces is one, the control unit determines human eyes in the human faces as target human eyes; when the number of the faces is multiple, the control unit selects the face which is located in the central area of the image and is closest to the display panel, and determines the human eyes in the selected face as the target human eyes.

In step 1104, the control unit determines positions of a plurality of display areas arranged in parallel and at intervals in the display panel according to the positions of the target human eyes and the structural characteristics of the barrier panel, wherein each display area is used for respectively displaying a part of display content in the display image frame.

In one possible embodiment, the barrier panel is a film material on which a plurality of display barriers are distributed in parallel and at intervals. The control unit determines the position of each display area in the display panel according to the position of the target human eyes, the position of each display barrier and the distance between the film material and the display panel.

In another possible embodiment, the barrier panel is a liquid crystal barrier panel having a plurality of liquid crystal barrier regions arranged in parallel and at intervals. The control unit determines the positions of the display areas in the display panel according to the positions of the eyes of the target person, the positions of the liquid crystal barrier areas and the distance between the liquid crystal barrier panel and the display panel. Optionally, the display device further comprises: a barrier driving unit. The barrier driving unit is connected to the control unit and the liquid crystal barrier panel, respectively. In a possible implementation manner, the control unit sends a barrier control instruction to the barrier driving unit, and the barrier driving unit controls the liquid crystal barrier panel to form the liquid crystal barrier on the plurality of liquid crystal barrier areas which are arranged in parallel and at intervals according to the barrier control instruction, so that the display content displayed by each display area is transmitted to the visible range where the target human eyes are located through the light transmission area between two adjacent liquid crystal barrier areas on the liquid crystal barrier panel. It should be noted that the visible range of the target human eye is a range determined according to the binocular distance of the target human eye.

In step 1105, the control unit sends a position determination instruction indicating the position of each display region to the display drive unit.

In step 1106, the display driving unit determines the position of each display region on the display panel according to the position determination instruction.

In step 1107, the display driving unit splits the display image frame to obtain display contents corresponding to each display region.

In step 1108, the display driving unit drives each display area to display the corresponding display content according to the position.

Alternatively, when the barrier panel is a liquid crystal barrier panel, switching between a narrow viewing angle operating state and a wide viewing angle operating state may also be achieved. Switching from the narrow viewing angle operating state to the wide viewing angle operating state is achieved through the following steps 1109-1111.

In step 1109, the control unit sends a state switching instruction to the display driving unit and the barrier driving unit when the operating state is switched from the narrow viewing angle operating state to the wide viewing angle operating state.

In step 1110, the display driving unit drives the liquid crystal display panel to display a display image frame on the entire display area after receiving the state switching instruction.

In step 1111, the barrier driving unit drives the liquid crystal barrier panel to cancel forming the liquid crystal barrier after receiving the state switching instruction.

Wherein step 1110 and step 1111 are steps executed in parallel.

It should be noted that, when the operating state is switched from the wide viewing angle operating state to the narrow viewing angle operating state, the process is the reverse of the steps 1101 to 1111, which is easily understood by those skilled in the art through the description of the steps 1101 to 1111 and the description in the foregoing device embodiment, and will not be described again here.

It should be noted that, when the operating state is the narrow viewing angle operating state, the display driving unit drives an idle region between two adjacent liquid crystal display regions on the liquid crystal display panel to be in the non-operating state, or drives the idle region on the liquid crystal display panel to display predetermined camouflage display contents.

In another alternative embodiment provided based on the embodiment shown in fig. 10, as shown in fig. 12, the method includes:

in step 1201, the control unit transmits a display image frame to the display driving unit.

For example, the control unit performs this step every 1/24 seconds.

In step 1202, the control unit acquires an image in a front area of the front of the display panel through the human eye position determination unit.

In step 1203, the control unit selects a target human eye from the above image.

In step 1204, the control unit determines positions of a plurality of display areas arranged in parallel and at intervals in the display panel according to the positions of the target human eyes and the structural characteristics of the barrier panel, wherein each display area is used for respectively displaying a part of display content in the display image frame.

In one possible embodiment, the barrier panel is a liquid crystal lens array including a plurality of liquid crystal lenses arranged in parallel. The control unit determines the position of each display area in the display panel according to the position of the target human eyes, the position of each liquid crystal lens and the refractive index of each liquid crystal lens. Optionally, the display device further comprises: a lens driving unit. The control unit sends a lens control instruction to the lens driving unit; the lens driving unit controls the refractive index of each liquid crystal lens according to the lens control instruction, so that the display content displayed in each display area is projected to the visual range of the target human eyes through the refraction of the corresponding liquid crystal lens.

In step 1205, the control unit transmits a position determination instruction indicating a position of each display region to the display drive unit.

In step 1206, the display driving unit determines the position of each display region on the display panel according to the position determination instruction.

In step 1207, the display driving unit splits the display image frame to obtain display contents corresponding to each display area.

In step 1208, the display driving unit drives each display region to display the corresponding display content according to the position.

When the barrier panel is a liquid crystal lens array, switching between a narrow viewing angle working state and a wide viewing angle working state can be realized. Switching from the narrow viewing angle operating state to the wide viewing angle operating state is achieved by the following steps 1209-1211.

In step 1209, the control unit sends a state switching instruction to the display driving unit and the lens driving unit when the operating state is switched from the narrow viewing angle operating state to the wide viewing angle operating state.

In step 1210, the display driving unit drives the display panel to display a display image frame on the entire display area after receiving the state switching instruction.

In step 1211, after receiving the state switching indication, the lens driving unit adjusts the refractive index of each liquid crystal lens so that the light corresponding to the display panel is emitted along a straight line.

Step 1210 and step 1211 are executed in parallel.

It should be noted that, when the operating state is switched from the wide viewing angle operating state to the narrow viewing angle operating state, the process is the reverse of the above steps 1201 to 1211, which is easily contemplated by the skilled in the art through the description of the above steps 1201 to 1211 and the description in the foregoing device embodiment, and the description is not repeated herein.

It should be noted that, when the operating state is the narrow viewing angle operating state, the display driving unit drives an idle region between two adjacent display regions on the display panel to be in the inactive state, or drives the idle region on the display panel to display predetermined disguised display contents. The camouflage display content is projected to an area outside a predetermined visible range through refraction of the corresponding liquid crystal lenses.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A display device, characterized in that the display device comprises: the human eye position detection device comprises a control unit, a display driving unit and a human eye position determination unit which are connected with the control unit, a display panel connected with the display driving unit, and a barrier panel positioned above the display panel;

the display content displayed in each display area is projected to the visual range of the target human eyes through the barrier panel;

the display driving unit is further used for driving an idle area between two adjacent display areas on the display panel to be in an inoperative state.

2. The display device according to claim 1,

the control unit is used for acquiring images in an area right in front of the display panel through the human eye position determining unit; identifying a face contained in the image; when the number of the human faces is one, determining human eyes in the human faces as the target human eyes; and when the number of the human faces is multiple, selecting the human faces which are positioned in the central area of the image and are closest to the display panel, and determining the human eyes in the selected human faces as the target human eyes.

3. The display device according to claim 1, wherein the barrier panel is a liquid crystal barrier panel having a plurality of liquid crystal barrier regions arranged in parallel and at intervals;

4. The display device according to claim 3, characterized in that the display device further comprises: a barrier driving unit; the barrier driving unit is respectively connected with the control unit and the liquid crystal barrier panel;

5. The display device according to claim 4,

the control unit is further used for sending a state switching instruction to the display driving unit and the barrier driving unit when the working state is switched from the narrow-view working state to the wide-view working state;

6. The display device according to claim 1, wherein the barrier panel is a liquid crystal lens array including a plurality of liquid crystal lenses arranged in parallel;

7. The display device according to claim 6, characterized in that the display device further comprises: a lens driving unit; the lens driving unit is respectively connected with the control unit and the liquid crystal lens array;

8. The display device according to claim 6,

the control unit is further used for sending a state switching instruction to the display driving unit and the lens driving unit when the working state is switched from the narrow visual angle working state to the wide visual angle working state;

9. The display device according to claim 1, wherein the barrier panel is a film material on which a plurality of display barriers arranged side by side and at intervals are distributed;

10. The display method is applied to a display device, and the display device comprises: the human eye position detection device comprises a control unit, a display driving unit and a human eye position determination unit which are connected with the control unit, a display panel connected with the display driving unit, and a barrier panel positioned above the display panel;

the method comprises the following steps:

the control unit sends a display image frame to the display driving unit;

the method further comprises the following steps:

the display driving unit drives an idle area between two adjacent display areas on the display panel to be in a non-operating state.

11. The display method according to claim 10, wherein the control unit determines the position of the target human eye by the human eye position determination unit, including:

the control unit identifies a face contained in the image;

12. The display method according to claim 10, wherein the barrier panel is a liquid crystal barrier panel having a plurality of liquid crystal barrier regions arranged in parallel and at intervals;

13. The display method according to claim 12, wherein the display device further comprises: a barrier driving unit; the barrier driving unit is respectively connected with the control unit and the liquid crystal barrier panel;

the method further comprises the following steps:

14. The display method according to claim 13, wherein the method further comprises:

15. The display method according to claim 10, wherein the barrier panel is a liquid crystal lens array including a plurality of liquid crystal lenses arranged in parallel;

16. The display method according to claim 15, wherein the display device further comprises: a lens driving unit; the lens driving unit is respectively connected with the control unit and the liquid crystal lens array;

the method further comprises the following steps:

the control unit sends a lens control instruction to the lens driving unit;

17. The display method according to claim 15, wherein the method further comprises:

18. The display method according to claim 10, wherein the barrier panel is a film material on which a plurality of display barriers are arranged in parallel and at intervals;