Display control method and device and display equipment

文档序号：377567 发布日期：2021-12-10 浏览：7次中文

阅读说明：本技术 显示控制方法及装置、显示设备 (Display control method and device and display equipment ) 是由周振兴洪涛马森徐成福于 2021-09-09 设计创作，主要内容包括：公开了一种显示控制方法,用于控制显示装置的显示,显示装置具有第一显示模式、第二显示模式和第三显示模式,当显示装置处于第一显示模式时,显示装置出射的光线射向预设观看位置,以使预设观看位置的用户看到第一位置的虚像；当显示装置处于第二显示模式时,显示装置出射的光线射向预设观看位置,以使预设观看位置的用户看到第二位置的虚像；当显示装置处于第三显示模式时,预设观看位置的用户交替看到第一位置的虚像和第二位置的虚像；显示控制方法包括：响应于模式选择指令,从第一显示模式、第二显示模式和第三显示模式中选择与模式选择指令相对应一者,作为目标显示模式；控制显示装置以目标显示模式进行显示。(The display control method is used for controlling the display of a display device, the display device is provided with a first display mode, a second display mode and a third display mode, when the display device is in the first display mode, light emitted by the display device is emitted to a preset viewing position, so that a user at the preset viewing position sees a virtual image at the first position; when the display device is in the second display mode, the light emitted by the display device is emitted to the preset viewing position, so that a user at the preset viewing position sees a virtual image at the second position; when the display device is in a third display mode, a user in a preset viewing position alternately sees the virtual image at the first position and the virtual image at the second position; the display control method comprises the following steps: in response to a mode selection instruction, selecting one corresponding to the mode selection instruction from the first display mode, the second display mode and the third display mode as a target display mode; and controlling the display device to display in the target display mode.)

1. A display control method is used for controlling display of a display device, and is characterized in that the display device is provided with a first display mode, a second display mode and a third display mode, wherein when the display device is in the first display mode, light emitted by the display device is emitted to a preset viewing position, so that a user at the preset viewing position sees a virtual image at a first position; when the display device is in the second display mode, the light emitted by the display device is emitted to the preset viewing position, so that a user at the preset viewing position sees a virtual image at a second position; when the display device is in a third display mode, light emitted by the display device is emitted to the preset viewing position, so that a user at the preset viewing position can alternately see a virtual image at the first position and a virtual image at the second position, and the distance from the first position to the preset viewing position is smaller than the distance from the second position to the preset viewing position;

the display control method comprises the following steps:

in response to a mode selection instruction, selecting one corresponding to the mode selection instruction from the first display mode, the second display mode, and the third display mode as a target display mode;

and controlling the display device to display in the target display mode.

2. The display control method according to claim 1, wherein the display device comprises:

a display screen;

the polarization converter is positioned on the light emitting side of the display screen and is configured to convert emergent light of the display screen into first circularly polarized light;

the imaging lens group is positioned on the light emergent side of the display screen and is configured to image an image displayed by the display screen; the imaging lens group includes at least a first lens;

a transflective layer between the polarization converter and the first lens;

the reflecting polarizing layer is positioned on one side of the transmitting and reflecting layer, which is far away from the polarization converter, and is configured to reflect first linearly polarized light and transmit second linearly polarized light, and the polarization directions of the first linearly polarized light and the second linearly polarized light are crossed;

a liquid crystal lens positioned between the transflective layer and the reflective polarizing layer;

when the target display mode is the first display mode, controlling the display device to display in the target display mode specifically includes:

controlling the liquid crystal lens to generate a first phase retardation amount, wherein the first circularly polarized light transmitted through the transflective layer is enabled to partially transmit the first circularly polarized light;

when the target display mode is the second display mode, controlling the display device to display in the target display mode, specifically including:

controlling the liquid crystal lens to generate a second phase delay amount, and converting the first circularly polarized light passing through the transmitting and reflecting layer into first linearly polarized light;

when the target display mode is the third display mode, controlling the display device to display in the target display mode, specifically including:

controlling the display screen to alternately display a first image and a second image;

controlling the liquid crystal lens to generate the first phase delay amount while controlling the display screen to display the first image; and controlling the liquid crystal lens to generate the second phase delay amount while controlling the display screen to display a second image.

3. The display control method according to claim 2, wherein the first phase delay amount is 0, and the second phase delay amount is pi/2 or an odd multiple of pi/2.

4. The display control method according to any one of claims 1 to 3, further comprising, before responding to a mode selection instruction:

responding to the mode switching instruction, outputting request information to request a user to input a abandoning instruction or a confirmation instruction;

and responding to the confirmation instruction, outputting prompt information to prompt a user to input the mode selection instruction.

5. The display control method according to any one of claims 1 to 3, characterized in that the display control method further comprises:

responding to a starting signal, and controlling the display device to display in an initial display mode, wherein the initial display mode is one of the first display mode, the second display mode and the first display mode.

6. A display control device is used for controlling the display of a display device, and is characterized in that the display device is provided with a first display mode, a second display mode and a third display mode, wherein when the display device is in the first display mode, light emitted by the display device is emitted to a preset viewing position, so that a user at the preset viewing position sees a virtual image at a first position; when the display device is in the second display mode, the light emitted by the display device is emitted to the preset viewing position, so that a user at the preset viewing position sees a virtual image at a second position; when the display device is in a third display mode, light emitted by the display device is emitted to the preset viewing position, so that a user at the preset viewing position can alternately see a virtual image at the first position and a virtual image at the second position, and the distance from the first position to the preset viewing position is smaller than the distance from the second position to the preset viewing position;

the display control apparatus includes:

an analysis module configured to select one corresponding to a mode selection instruction from the first display mode, the second display mode and the third display mode as a target display mode in response to the mode selection instruction, and output a corresponding target control signal;

a control module configured to control the display device to display in the target display mode according to the target control signal.

7. The display control apparatus according to claim 6, wherein the display apparatus comprises:

a display screen;

the polarization converter is positioned on the light emitting side of the display screen and used for converting emergent light of the display screen into first circularly polarized light;

the imaging lens group is positioned on the light emergent side of the display screen and is used for imaging the image displayed by the display screen; the imaging lens group includes at least a first lens;

a transflective layer between the polarization converter and the first lens;

the reflecting polarizing layer is positioned on one side of the transmitting and reflecting layer, which is far away from the polarization converter, and is used for reflecting first linearly polarized light and transmitting second linearly polarized light, and the polarization directions of the first linearly polarized light and the second linearly polarized light are crossed;

a liquid crystal lens positioned between the transflective layer and the reflective polarizing layer;

the control module includes: a processing unit and a drive unit, the drive unit comprising a first drive unit and a second drive unit,

the processing unit is configured to provide image data to be displayed to the driving unit;

when the target display mode is the first display mode, the first driving unit is configured to drive the display screen to display a first image according to the image data to be displayed; the second driving unit is configured to control the liquid crystal lens to generate a first phase retardation amount, the first circularly polarized light transmitted through the transflective layer, so that the reflective polarizing layer partially transmits the first circularly polarized light;

when the target display mode is the second display mode, the first driving unit is configured to drive the display screen to display a second image according to the image data to be displayed; the second driving unit is configured to control the liquid crystal lens to generate a second phase delay amount, and the first circularly polarized light passing through the transflective layer is converted into first linearly polarized light;

when the target display mode is the third display mode, the first driving unit is configured to drive the display screen to alternately display a first image and a second image according to the image data to be displayed; the second driving unit is configured to control the liquid crystal lens to generate the first phase retardation while the display screen displays a first image; and controlling the liquid crystal lens to generate the second phase delay amount while the display screen displays a second image.

8. The display control apparatus according to claim 7, wherein the first phase delay amount is 0, and the second phase delay amount is pi/2 or an odd multiple of pi/2.

9. The display control device according to any one of claims 6 to 8, wherein the control module is further configured to output request information to request a user to input a discard instruction or a confirmation instruction in response to a mode switching instruction before responding to a mode selection instruction; and responding to the confirmation instruction, outputting prompt information to prompt a user to input the mode selection instruction.

10. The device according to any one of claims 6 to 8, wherein the control module is further configured to control the display device to display in an initial display mode in response to a power-on signal, the initial display mode being one of the first display mode, the second display mode, and the first display mode.

11. A display device, comprising:

the display device comprises a display device and a control unit, wherein the display device is provided with a first display mode, a second display mode and a third display mode, when the display device is in the first display mode, light emitted by the display device is emitted to a preset viewing position, so that a user at the preset viewing position sees a virtual image at a first position; when the display device is in the second display mode, the light emitted by the display device is emitted to the preset viewing position, so that a user at the preset viewing position sees a virtual image at a second position; when the display device is in a third display mode, light emitted by the display device is emitted to the preset viewing position, so that a user at the preset viewing position can alternately see a virtual image at the first position and a virtual image at the second position, and the distance from the first position to the preset viewing position is smaller than the distance from the second position to the preset viewing position;

a display control device connected to the display device, the display control device being the display control device according to any one of claims 6 to 10.

Technical Field

The disclosure relates to the technical field of display, in particular to a display control method and device and display equipment.

Background

Near-to-eye display is the current research focus content, such as virtual reality display in a helmet shape and augmented reality display in an intelligent glasses shape. The near-eye display can provide unprecedented mutual inductance for people, and has important application value in the fields of telemedicine, industrial design, education, military virtual training, entertainment and the like.

Virtual Reality (VR for short) technology presents a totally closed Virtual environment, and immersive viewing experience in a three-dimensional environment is created by means of a display module.

Disclosure of Invention

The embodiment of the disclosure provides a display control method and device and display equipment.

The present disclosure provides a display control method of a display device, the display device having a first display mode, a second display mode and a third display mode, wherein when the display device is in the first display mode, light emitted by the display device is emitted to a preset viewing position, so that a user at the preset viewing position sees a virtual image at a first position; when the display device is in the second display mode, the light emitted by the display device is emitted to the preset viewing position, so that a user at the preset viewing position sees a virtual image at a second position; when the display device is in a third display mode, light emitted by the display device is emitted to the preset viewing position, so that a user at the preset viewing position can alternately see a virtual image at the first position and a virtual image at the second position, and the distance from the first position to the preset viewing position is smaller than the distance from the second position to the preset viewing position;

the display control method comprises the following steps:

and controlling the display device to display in the target display mode.

In some embodiments, the display device includes:

a display screen;

the polarization converter is positioned on the light emitting side of the display screen and is configured to convert emergent light of the display screen into first circularly polarized light;

a transflective layer between the polarization converter and the first lens;

a liquid crystal lens positioned between the transflective layer and the reflective polarizing layer;

when the target display mode is the first display mode, controlling the display device to display in the target display mode specifically includes:

when the target display mode is the second display mode, controlling the display device to display in the target display mode, specifically including:

when the target display mode is the third display mode, controlling the display device to display in the target display mode, specifically including:

controlling the display screen to alternately display a first image and a second image;

In some embodiments, the first phase retardation is 0 and the second phase retardation is pi/2 or an odd multiple of pi/2.

In some embodiments, responding to the mode selection instruction further comprises:

responding to the mode switching instruction, outputting request information to request a user to input a abandoning instruction or a confirmation instruction;

and responding to the confirmation instruction, outputting prompt information to prompt a user to input the mode selection instruction.

In some embodiments, the display control method further includes:

The display control device of the display device is provided with a first display mode, a second display mode and a third display mode, wherein when the display device is in the first display mode, light emitted by the display device is emitted to a preset viewing position, so that a user at the preset viewing position sees a virtual image at a first position; when the display device is in the second display mode, the light emitted by the display device is emitted to the preset viewing position, so that a user at the preset viewing position sees a virtual image at a second position; when the display device is in a third display mode, light emitted by the display device is emitted to the preset viewing position, so that a user at the preset viewing position can alternately see a virtual image at the first position and a virtual image at the second position, and the distance from the first position to the preset viewing position is smaller than the distance from the second position to the preset viewing position;

the display control apparatus includes:

a control module configured to control the display device to display in the target display mode according to the target control signal.

In some embodiments, the display device includes:

a display screen;

the polarization converter is positioned on the light emitting side of the display screen and used for converting emergent light of the display screen into first circularly polarized light;

a transflective layer between the polarization converter and the first lens;

a liquid crystal lens positioned between the transflective layer and the reflective polarizing layer;

the control module includes: a processing unit and a drive unit, the drive unit comprising a first drive unit and a second drive unit,

the processing unit is configured to provide image data to be displayed to the driving unit;

In some embodiments, the first phase retardation is 0 and the second phase retardation is pi/2 or an odd multiple of pi/2.

In some embodiments, the control module is further configured to, prior to responding to the mode selection instruction, output request information in response to the mode switching instruction to request the user to input a abandon instruction or a confirm instruction; and responding to the confirmation instruction, outputting prompt information to prompt a user to input the mode selection instruction.

In some embodiments, the control module is further configured to control the display device to display in an initial display mode in response to a power-on signal, the initial display mode being one of the first display mode, the second display mode, and the first display mode.

An embodiment of the present disclosure further provides a display device, including:

and the display control device is connected with the display device and adopts the display control device.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

fig. 1 is a flowchart of a display control method provided in some embodiments of the present disclosure.

Fig. 2 is a schematic diagram of a display control method provided in other embodiments of the present disclosure.

Fig. 3 is a schematic diagram of a display device provided in some embodiments of the present disclosure.

Fig. 4 is an optical path diagram of a display device provided in some embodiments of the present disclosure in a first display mode.

Fig. 5 is an optical path diagram of a display device provided in some embodiments of the present disclosure in a second display mode.

Fig. 6 is a schematic diagram of a display control apparatus provided in some embodiments of the present disclosure.

Fig. 7 is a schematic diagram of a display control module provided in further embodiments of the present disclosure.

Fig. 8 is a schematic diagram of a display control apparatus provided in other embodiments of the present disclosure.

Fig. 9 is a schematic diagram of a display device provided in some embodiments of the present disclosure.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.

The terminology used herein to describe the embodiments of the disclosure is not intended to limit and/or define the scope of the disclosure. For example, unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which this disclosure belongs. It should be understood that the use of "first," "second," and similar terms in the present disclosure are not intended to indicate any order, quantity, or importance, but rather are used to distinguish one element from another. The singular forms "a," "an," or "the" and similar referents do not denote a limitation of quantity, but rather denote the presence of at least one, unless the context clearly dictates otherwise. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, which may also change accordingly when the absolute position of the object being described changes.

The disclosed embodiments provide a display control method of a display apparatus, which may be performed by a display control apparatus and used to control the display apparatus to display in a target display mode. Among them, the display device has a plurality of display modes, for example, the plurality of display modes include: a first display mode, a second display mode, and a third display mode. In some embodiments, the first display mode satisfies: when the display device is in the first display mode, the light emitted by the display device emits to the preset viewing position, so that a user at the preset viewing position sees the virtual image at the first position. The second display mode satisfies: when the display device is in the second display mode, the light emitted by the display device emits to the preset viewing position, so that a user at the preset viewing position sees a virtual image at the second position. The third display mode satisfies: when the display device is in the third display mode, the light emitted by the display device emits to the preset viewing position, so that a user at the preset viewing position can alternately see the virtual image at the first position and the virtual image at the second position. The distance from the first position to the preset viewing position is smaller than the distance from the second position to the preset viewing position. The first display mode is the near field display mode, the second display mode is the far field display mode, the third display mode is the monocular three-dimensional display mode, when the display device displays in the third display mode, the virtual image that first position and second position appear in turn can be seen to the messenger's eyes, thereby reach three-dimensional display effect, and under this kind of display mode, the people's eyes can not focus on same image plane for a long time, thereby prevent to appear avoiding the vergence conflict.

Fig. 1 is a flowchart of a display control method provided in some embodiments of the present disclosure, and as shown in fig. 1, the display control method includes:

s10, in response to the mode selection instruction, selecting one corresponding to the mode selection instruction from the first display mode, the second display mode and the third display mode as the target display mode.

The mode selection command may be input by a user, and the user may input the command through a physical key, a handle, a bracelet, a keyboard, a touch pad, an eye tracking device, a gesture recognition device, a voice recognition device, a brain wave recognition device, or other input means.

And S20, controlling the display device to display in the target display mode.

In the display control method provided by the embodiment of the disclosure, the display device can be controlled to display in a required target display mode according to a mode selection instruction of a user, so that user experience is improved.

Fig. 2 is a schematic diagram of a display control method provided in another embodiment of the disclosure, and as shown in fig. 2, the display control method includes:

and S01, responding to the starting signal, controlling the display device to display in an initial display mode, wherein the initial display mode is one of a first display mode, a second display mode and the first display mode.

The initial display modes at each time of power-on may be the same display mode, for example, the initial display modes at each time of power-on are all the first display modes, or all the second display modes, or all the third display modes. Or the initial display mode when the ith power-on is the display mode before the ith-1 power-off, wherein i is an integer greater than 1.

S02, responding to the mode switching command, outputting request information to request the user to input a abandon command or a confirm command.

In some examples, when the user inputs a mode switching instruction, the display control means outputs request information, which may be displayed on the display means in the form of a text image, for example, the display means displays information of "whether to switch the display mode".

And S03, responding to the confirmation instruction, outputting prompt information to prompt the user to input a mode selection instruction.

In one example, when the user inputs the confirmation instruction, the display control device may output a prompt message, wherein the prompt message may include: the information of the current display mode can also comprise information of selectable display modes. The prompt information may be displayed on the display device in the form of a text image, for example, the display device displays "the current display mode is the first display mode, please select the target display mode from the second display mode and the third display mode".

The user can input the above-mentioned instructions to the display control device through the input device. The input device may be a physical key, a handle, a bracelet, a keyboard, a touch pad, an eye tracking device, a gesture recognition device, a voice recognition device, a brain wave recognition device, or other input device.

For example, the display device is a touch display device, and when the display device displays the prompt information, the user can directly select the target display mode from the selectable display modes in a touch manner; for another example, the input device includes a physical key, and the user can select different display modes as the target display mode by pressing different times; for another example, the input device may include a plurality of physical keys, and the target display mode may be selected by pressing a different key and/or a different number of presses.

It should be noted that the implementation processes of S01 to S03 are merely exemplary, and other implementation processes may be adopted. For example, after receiving the mode switching instruction, the user directly waits for the mode selection instruction to be input without outputting the request information.

S10, in response to the mode selection instruction, selecting one corresponding to the mode selection instruction from the first display mode, the second display mode and the third display mode as the target display mode.

In practical applications, after the prompt information is output and the user inputs an instruction, it may be determined whether the instruction input by the user is a mode selection instruction corresponding to the first display mode, the second display mode, or the third display mode.

And S20, controlling the display device to display in the target display mode.

Fig. 3 is a schematic diagram of a display device provided in some embodiments of the present disclosure, fig. 4 is an optical path diagram of the display device provided in some embodiments of the present disclosure in a first display mode, and fig. 5 is an optical path diagram of the display device provided in some embodiments of the present disclosure in a second display mode. How to control the display device to display in the first display mode, the second display mode and the third display mode is described below with reference to fig. 3 to 5.

As shown in fig. 3, the display device 100 may include: display screen 10, polarization converter 20, imaging lens group 30, transflective layer 40, reflective polarizing layer 50, liquid crystal lens 60.

Wherein the display screen 10 is configured to display an image. The Display screen 10 may be one of a Liquid Crystal Display (LCD), a Micro Light Emitting Diode (Micro-LED), an Organic Light Emitting Diode (OLED), and a Micro Organic Light Emitting Diode (OLED), which is not limited herein.

The polarization converter 20 is located on the light emitting side of the display screen 10 and configured to convert the outgoing light of the display screen 10 into first circularly polarized light.

The imaging lens group 30 is located on the light-emitting side of the display screen 10, and the imaging lens group 30 at least comprises a first lens 301.

The transflective layer 40 is located between the polarization converter 20 and the first lens 301.

The reflective polarizing layer 50 is located on one side of the transflective layer 40 away from the polarization converter 20, and is used for reflecting the first linearly polarized light and transmitting the second linearly polarized light; the polarization directions of the first linearly polarized light and the second linearly polarized light are crossed, for example, the polarization directions of the first linearly polarized light and the second linearly polarized light are perpendicular to each other.

The liquid crystal lens 60 is located between the transflective layer 40 and the reflective polarizing layer 50.

It should be noted that, in practical production, the polarization converter 20 may be directly attached to the surface of the display screen 10 facing the imaging lens assembly 30, and the polarization converter 20 may adopt a circular polarizer. In addition, the transflective layer 40 may be disposed on a surface of the liquid crystal lens 60 on a side facing away from the reflective polarizing layer 50; the reflective polarizing layer 50 is disposed on the surface of the liquid crystal lens 60 facing away from the transflective layer 40, so that a substrate for supporting the above-mentioned layers can be omitted, and the installation of each element in the display device 100 is more convenient.

When the target display mode is the first display mode, step S20 may specifically include: the display screen 10 is controlled to display an image, and the liquid crystal lens 60 is controlled to generate a first phase retardation amount when the display screen 10 displays an image, wherein the first phase retardation amount may be 0, that is, the liquid crystal lens 60 is equivalent to a flat glass, and the phase difference between o light and e light is 0, so that no phase retardation is generated after the light passes through the liquid crystal lens 60, and the polarization state is not changed.

When the target display mode is the second display mode, step S20 may specifically include: the display screen 10 is controlled to display an image, and the liquid crystal lens 60 is controlled to generate a second phase retardation amount when the display screen 10 displays the image, wherein the second phase retardation amount is pi/2 or an odd multiple of pi/2, namely the phase difference between o light and e light is pi/2 or an odd multiple of pi/2, at this time, the liquid crystal lens 60 is equivalent to a quarter-wave plate, and then the first circularly polarized light is converted into the first linearly polarized light after passing through the liquid crystal lens 60.

The light emitted from the display screen 10 is converted into a first circularly polarized light after passing through the polarization converter 20; after the first circularly polarized light passes through the transflective layer 40, part of the light is transmitted, other part of the light is reflected, and the light transmitted by the transflective layer 40 is still the first circularly polarized light; the first circularly polarized light transmitted by the transflective layer 40 is converted into first linearly polarized light after passing through the liquid crystal lens 60; the reflective polarizing layer 50 serves to reflect the first linearly polarized light and transmit the second linearly polarized light, so that the first linearly polarized light converted by the liquid crystal lens 60 is reflected when being incident to the reflective polarizing layer 50; the first linearly polarized light reflected by the reflective polarizing layer 50 is incident to the liquid crystal lens 60 again, and the liquid crystal lens 60 converts the first linearly polarized light into first circularly polarized light again; the first circularly polarized light converted by the liquid crystal lens 60 is incident to the transflective layer 40, after the first circularly polarized light is incident to the transflective layer 40, part of the light is transmitted, other part of the light is reflected, the rotation direction of the circularly polarized light reflected by the transflective layer 40 is changed into reverse, and the circularly polarized light is converted into second circularly polarized light; the second circularly polarized light reflected by the transflective layer 40 is incident to the liquid crystal lens 60, and at this time, the liquid crystal lens 60 converts the second circularly polarized light into second linearly polarized light; the reflective polarizing layer 50 is configured to reflect the first linearly polarized light and transmit the second linearly polarized light, so that the second linearly polarized light converted by the liquid crystal lens 60 is transmitted when entering the reflective polarizing layer 50 and enters the preset viewing position, a human eye at the preset viewing position can view a virtual image at the second position V2, and a distance between the second position V2 and the preset viewing position is s 2.

When the target display mode is the third display mode, step S20 may specifically include: controlling the display screen 10 to alternately display a first image and a second image, and controlling the liquid crystal lens to generate the first phase delay amount while controlling the display screen 10 to display the first image; and controlling the liquid crystal lens 60 to generate the second phase retardation amount while controlling the display screen 10 to display the second image.

When the liquid crystal lens 60 is controlled to be switched between the first phase delay amount and the second phase delay amount, the optical path of the light in the display device 100 is changed, that is, the object distance of the light when the light enters the first lens 301 is changed, so that human eyes can alternately see virtual images at the first position V1 and the second position V2, and the human eyes can see images with certain depth of field, thereby achieving a three-dimensional display effect.

It should be noted that the frequency of displaying the first image and the second image on the display screen 10 should be fast enough, so that the human eye may think that the first image and the second image are displayed at the same time due to the persistence of vision effect of the human eye, so that the human eye may perceive a three-dimensional stereoscopic image. For example, the display time of each image is about 5ms, and the image refresh frequency of the display screen is greater than or equal to 200 Hz.

Optionally, the ratio of the transmittance to the reflectance of the transflective layer 40 is 1:1, so that the luminance of the virtual image seen by the human eye at the first position is the same as the luminance of the virtual image seen by the human eye at the second position.

The first circularly polarized light may be right-circularly polarized light, and the second circularly polarized light may be left-circularly polarized light; or the first circularly polarized light may be left circularly polarized light, and the second circularly polarized light may be right circularly polarized light, which is not limited herein.

The conversion of the polarization state of light in the display device 100 will be specifically described by taking the example that the emergent light from the display screen 10 is converted into right-handed circularly polarized light after passing through the polarization converter 20.

When the phase retardation generated by the liquid crystal lens 60 is 0, the right-handed circularly polarized light converted by the polarization converter 20 is still right-handed circularly polarized light after passing through the transflective layer 40 and the liquid crystal lens 60, and is converted into linearly polarized light after passing through the reflective polarizing layer 50, and the linearly polarized light is incident to human eyes.

When the retardation generated by the lc lens 60 is pi/2 or an odd multiple of pi/2, the lc lens 60 is equivalent to a quarter-wave plate, and the fast axis direction thereof forms an angle of 45 ° with the transmission axis/reflection axis direction of the reflective polarizing layer 50. The right-handed circularly polarized light converted by the polarization converter 20 is still right-handed circularly polarized light after passing through the transflective layer 40, and is converted into linearly polarized light (0 °) after passing through the liquid crystal lens 60(+45 °), and the polarization direction thereof is parallel to the reflection axis of the reflective polarizing layer 50 and is reflected by the reflective polarizing layer 50. The reflected linearly polarized light (0 °) is converted into the right-handed circularly polarized light after passing through the liquid crystal lens 60(-45 °), the right-handed circularly polarized light is converted into the left-handed circularly polarized light after being reflected by the transflective layer 40, the right-handed circularly polarized light is converted into the linearly polarized light (90 °) after passing through the liquid crystal lens 60(+45 °), the polarization direction of the linearly polarized light is parallel to the transmission axis of the reflective polarizing layer 50, and the linearly polarized light is transmitted by the reflective polarizing layer 50 and enters human eyes.

In particular implementation, as shown in fig. 3 to 5, the imaging lens group 30 may further include a second lens 302; the second lens 302 may be disposed between the polarization converter 20 and the transflective layer 40 (as shown in fig. 1-3); alternatively, the second lens 302 may be disposed between the polarization converter 20 and the display screen 10 (not shown), and is not limited herein. In the case where the second lens 302 is located between the polarization converter 20 and the transflective layer 40, when the phase retardation amount of the liquid crystal lens 60 is 0, the liquid crystal lens 60 is equivalent to a plate glass, the optical path of the near-eye display device 100 is as shown in fig. 2, light emitted from the display screen 10 enters the polarization converter 20, enters the second lens 302 through the polarization converter 20, enters the transflective layer 40 through the second lens 302, enters the liquid crystal lens 60 through the transflective layer 40, enters the reflective polarizing layer 50 through the liquid crystal lens 60, enters the first lens 301 through the reflective polarizing layer 50, and finally enters the human eye through the first lens 301. When the retardation of the liquid crystal lens 60 is pi/2 or an odd multiple of pi/2, the liquid crystal lens 60 is equivalent to a quarter-wave plate, and the optical path of the display device 100 is as shown in fig. 3, light emitted from the display screen 10 enters the polarization converter 20, enters the second lens 302 through the polarization converter 20, enters the transflective layer 40 through the second lens 302, enters the liquid crystal lens 60 through the transflective layer 40, enters the reflective polarizing layer 50 through the liquid crystal lens 60, enters the liquid crystal lens 60 again after being reflected by the reflective polarizing layer 50, enters the transflective layer 40 again through the liquid crystal lens 60, enters the liquid crystal lens 60 again after being reflected by the transflective layer 40, enters the first lens 301 again through the liquid crystal lens 60, and finally enters the human eye through the first lens 301.

The first image is an image displayed when imaging at a first position is required; the second image is an image displayed when imaging at the first position is required, and when the display apparatus 100 displays in the third display mode, the content of the first image displayed at different times may be different, and the content of the second image displayed at different times may also be different.

It should be noted that the display device 100 may be used in a near-eye display apparatus, and in the near-eye display apparatus, two display devices 100 in fig. 3 may be provided and respectively correspond to the left and right eyes of the user. In this case, when the user selects the first display mode, the display control means may control each display device 100 to display in the first display mode; also, the images displayed by the display screens 10 of the two display apparatuses 100 may be different at the same time. For example, in the case where one of the display panels 10 displays an image of a tree and the other display panel 10 displays an image of a white cloud, although both the display devices 100 display in the near-field mode, the images seen by the left and right eyes of the user are different, and the two different images can form a three-dimensional image having a stereoscopic effect in the human brain. Likewise, when the user selects the second display mode, the display control means may control each display device 100 to display in the second display mode; also, the images displayed on the display screens 10 of the two display apparatuses 100 may be different at the same time, so that the user perceives a three-dimensional image displayed in the far field.

It should be noted that, when the display device 100 is controlled to perform the display in the initial display mode, the specific manner is similar to step S20, that is, when the initial display mode is the first display mode, the liquid crystal lens 60 is controlled to generate the first phase delay amount when the display screen 10 displays the image; when the initial display mode is the second display mode, controlling the liquid crystal lens 60 to generate a second phase delay amount when the display screen 10 displays the image; when the initial display mode is the third display mode, the display screen 10 is controlled to alternately display the first image and the second image, the liquid crystal lens 60 is controlled to generate the first phase delay amount when the display screen 10 displays the first image, and the liquid crystal lens 60 is controlled to generate the second phase delay amount when the display screen 10 displays the second image.

In some embodiments, the step S20 may be further followed by outputting execution result information, for example, when the step S20 fails to execute, for example, when the liquid crystal lens 60 fails to be controlled to reach the corresponding state, notification information may be output to notify the user of the failure of mode switching; alternatively, step S20 may be executed again. When the execution of step S20 is successful, the display device 100 is controlled to output the text image of "mode switching successful". Of course, the output mode of the execution result information may be a sound, vibration, or the like.

Fig. 6 is a schematic diagram of a display control device provided in some embodiments of the present disclosure, the display control device being configured to control a display device to perform display. The specific structure of the display device is described in the above embodiments, and is not described herein again. As shown in fig. 6, the display control apparatus includes: an analysis module 201 and a control module 202.

The analysis module 201 is configured to select one corresponding to the mode selection instruction from among the first display mode, the second display mode, and the third display mode as a target display mode in response to the mode selection instruction, and output a corresponding target control signal.

The control module 202 is configured to control the display apparatus to display in the target display mode according to the target control signal.

In some embodiments, the control module 202 is further configured to, prior to responding to the mode selection instruction, output request information in response to the mode switching instruction to request the user to input a abort instruction or a confirm instruction; and responding to the confirmation instruction, outputting prompt information to prompt a user to input the mode selection instruction.

In some embodiments, the control module 202 is further configured to control the display apparatus to display in an initial display mode in response to a power-on signal, wherein the initial display mode is one of the first display mode, the second display mode, and the first display mode.

Fig. 7 is a schematic diagram of a display control module provided in other embodiments of the disclosure, and fig. 7 is an implementation manner of the display control module shown in fig. 6, and as shown in fig. 7, the control module 202 includes: a processing unit 2020 and a drive unit. The processing unit 2020 is configured to provide image data to be displayed to the driving unit. The driving unit includes a first driving unit 2021 and a second driving unit 2022.

When the target display mode is the first display mode, the first driving unit 2021 is configured to drive the display screen 10 to display a first image according to the image data to be displayed; the second driving unit 2022 is configured to control the liquid crystal lens 60 to generate a first phase retardation amount, transmit the first circularly polarized light through the transflective layer, so that the reflective polarizing layer partially transmits the first circularly polarized light. In the first display mode, the user may see a virtual image at the first position, see the above description.

When the target display mode is the second display mode, the first driving unit 2021 is configured to drive the display screen 10 to display the second image according to the image data to be displayed; the second driving unit 2022 is configured to control the liquid crystal lens 60 to generate a second phase retardation amount, and convert the first circularly polarized light passing through the transmissive and reflective layer into a first linearly polarized light, so that a user can see a virtual image at a second position. See the description above for specific principles.

When the target display mode is the third display mode, the first driving unit 2021 is configured to drive the display screen 10 to alternately display the first image and the second image according to the image data to be displayed; the second driving unit 2022 is configured to control the liquid crystal lens 60 to generate a first phase retardation amount while the display screen 10 displays the first image; and controlling the liquid crystal lens 60 to generate a second phase delay amount while the display screen 10 displays the second image, so that a user can see virtual images alternately displayed at the first position and the second position, and single-eye stereoscopic display is realized. See the description above for specific principles.

In some embodiments, the first driving unit 2021 and the second driving unit 2022 may be integrated in the same driving chip, and the driving chip performs signal transmission with the processing unit 2020. Fig. 8 is a schematic diagram of a display control apparatus provided in other embodiments of the disclosure, and as shown in fig. 8, the first driving unit 2021 and the second driving unit 2022 may be integrated into different driving chips, and the first driving unit 2021 and the second driving unit 2022 perform signal transmission with the processing unit 2020 through a management chip 2023. Alternatively, a management chip is not provided, and the driver chips of the first driving unit 2021 and the second driving unit 2022 may directly perform signal transmission with the processing unit 2020. In other embodiments, each driver chip includes, but is not limited to, an FPGA, a Bridge board, an MCU control board, and the like.

Fig. 9 is a schematic diagram of a display apparatus provided in some embodiments of the present disclosure, which may be a near-eye display device. As shown in fig. 9, the display device includes: a display control device 200 and a display device 100.

The display device 100 is the display device in the above-described embodiment, and has a first display mode, a second display mode, and a third display mode. The specific structure of the display device 100 is described above.

The display control apparatus 200 employs the display control apparatus in the above-described embodiment, and the display control apparatus 200 is connected to the display apparatus 100.

In addition, the display device may further include: the input device 300 allows a user to input instructions to the display control device 200 through the input device 300.

In some embodiments, the display apparatus may be a unified machine, and in this case, the display control device 200 and the display device 100 may be integrated into a single body. In other embodiments, the display control device 200 and the display device 100 may be disposed in different carriers, for example, the display device 100 is disposed in a head-mounted case, and the display control device 200 is mounted on a desktop PC, a LaptopPC, and possibly other computer platforms.

It is to be understood that the above embodiments are merely exemplary embodiments that are employed to illustrate the principles of the present disclosure, and that the present disclosure is not limited thereto. It will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the disclosure, and these are to be considered as the scope of the disclosure.

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