WO2023207953A1

WO2023207953A1 - Display device and wearable display apparatus

Info

Publication number: WO2023207953A1
Application number: PCT/CN2023/090516
Authority: WO
Inventors: 武玉龙; 张�浩; 陈丽莉; 董瑞君; 韩娜
Original assignee: 京东方科技集团股份有限公司; 北京京东方显示技术有限公司
Priority date: 2022-04-29
Filing date: 2023-04-25
Publication date: 2023-11-02
Also published as: CN114779475A

Abstract

A display device and a wearable display apparatus. The display device comprises: a first display screen (1); a lenticular lens (2), which is arranged at a light emergent side of the first display screen (1) and is used for transmitting first emergent light of the first display screen (1), such that a first display image of the first display screen (1) is imaged; a second display screen (3), which is arranged at an end of the lenticular lens (2), such that second emergent light of the second display screen (3) is not blocked by the lenticular lens (2); and a reflector (4), which is arranged on a light emergent side of the second display screen (3) and is located on the side of the lenticular lens (2) away from the first display screen (1), and which is used for reflecting the second emergent light from the second display screen (3) to the lenticular lens (2). Since the lenticular lens (2) is used for reflecting the second emergent light reflected by the reflector (4), a second display image of the second display screen (3) and the first display image form a continuous image, thereby ensuring that the display images imaged at human eyes do not have a splicing seam, thus solving the splicing seam problem of the display device.

Description

Display devices and wearable display devices

cross reference

This disclosure claims priority to the Chinese patent application titled "Display Device and Wearable Display Equipment" with application number 202210478429.6 submitted on April 29, 2022. The entire content of this Chinese patent application is incorporated herein by reference.

Technical field

The present disclosure relates to the field of near-eye display technology, and in particular, to a display device and a wearable display device.

Background technique

In recent years, with the continuous development of Virtual Reality (VR) and Augmented Reality (AR) technologies, near-eye display products were initially used in the military field and have gradually been widely used in film and television, education, medical, etc. civil field.

The field of view angle of mainstream virtual reality display products is generally 90° to 110°. Currently, the field of view angle can be increased through screen splicing. However, when multiple screens are spliced together, splicing problems will occur, which affects the display effect.

It should be noted that the information disclosed in the above background section is only used to enhance understanding of the background of the present disclosure, and therefore may include information that does not constitute prior art known to those of ordinary skill in the art.

Contents of the invention

The purpose of the present disclosure is to overcome the above-mentioned shortcomings of the prior art and provide a display device and a wearable display device.

According to one aspect of the present disclosure, a display device includes at least one set of display modules, and the display module includes: a first display screen; a lenticular lens disposed on the light exit side of the first display screen for transmitting the The first emitted light of the first display screen is used to image the first display image of the first display screen; the second display screen is provided at one end of the lenticular lens so that the second emitted light of the second display screen is not blocked by the lenticular lens; a reflector arranged on the second The light exit side of the display screen is located on the side of the lenticular lens away from the first display screen, and is used to reflect the second emitted light of the second display screen to the lenticular lens; wherein the lenticular lens is also used to The second emitted light reflected by the reflector is reflected, so that the second display image of the second display screen and the imaging of the first display image form a continuous image.

In an exemplary embodiment of the present disclosure, the lenticular lens includes: a transmission area, including an anti-reflection film disposed on a side of the lenticular lens away from the first display screen, for transmitting at least part of the first output Emitted light; a reflective area, including an antireflection film disposed on the side of the lenticular lens away from the first display screen, for reflecting at least part of the second emitted light reflected by the reflector.

In an exemplary embodiment of the present disclosure, the lenticular lens further includes: a semi-transmissive and semi-reflective area located between the transmissive area and the reflective area, including the lenticular lens being disposed away from the first display screen. A semi-transparent and semi-reflective film on one side, the semi-transparent and semi-reflective area is used to transmit part of the first emitted light and reflect part of the second emitted light, so that part of the imaging of the first display image is consistent with part of the image. The imaging of the second display image overlaps.

In an exemplary embodiment of the present disclosure, the light emitted from both ends of the first display screen is the main incident area in the area covered by the side of the lenticular lens close to the first display screen; wherein, the An anti-reflection film is provided on a portion of the main incident area of the lenticular lens close to the first display screen, and a side surface of the lenticular lens close to the first display screen is located between the main incident area and the main incident area. The area between the edges of the lenticular lens is provided with a light-absorbing layer.

In an exemplary embodiment of the present disclosure, an anti-reflection film is provided on the entire side of the lenticular lens close to the first display screen.

In an exemplary embodiment of the present disclosure, the center of the first display screen is located on the optical axis of the lenticular lens, and the imaging angle corresponding to the first display screen is symmetrical with respect to the optical axis of the lenticular lens.

In an exemplary embodiment of the present disclosure, the imaging viewing angle range corresponding to the transmissive area is -40° to 40°, and the imaging viewing angle range corresponding to the reflective area is -55° to 35° and 35° to 55°. The imaging viewing angle range corresponding to the semi-transparent and semi-reflective area is -40° to -35° and 35° to 40°.

In an exemplary embodiment of the present disclosure, the center of the first display screen is located on the optical axis of the lenticular lens, and the second display screen includes a screen located at both ends of the lenticular lens and relative to the first The display screen has a first sub-display screen and a second sub-display screen that are symmetrically arranged, and the imaging angles corresponding to the first sub-display screen and the second sub-display screen are symmetrical with respect to the optical axis of the lenticular lens.

In an exemplary embodiment of the present disclosure, the display device includes two groups of display modules; The center of the first display screen is located on the optical axis of the lenticular lens in the same display module, and the second display screen includes a third display screen located at both ends of the lenticular lens and arranged symmetrically with respect to the first display screen. A sub-display screen and a second sub-display screen. The first sub-display screen is located on the side of the second sub-display screen away from the other display module. The imaging angle of the first sub-display screen is the same as that in the same display module. The imaging angle of view of the second sub-display is asymmetrical with respect to the optical axis of the lenticular lens, and the imaging angle of view corresponding to the first sub-display is smaller than the imaging angle of view corresponding to the second sub-display in the same display module . In an exemplary embodiment of the present disclosure, a semi-transparent and semi-reflective film is provided on the entire side of the lenticular lens away from the first display screen.

In an exemplary embodiment of the present disclosure, the second display image and the first display image are imaged at the position of the human eye, and the horizontal distance between the position of the human eye and the second display screen is 15 to 15 20mm, and the size of the eye box at the position of the human eye is Φ8mm~Φ10mm.

In an exemplary embodiment of the present disclosure, the imaging focal length of the lenticular lens corresponding to the first display screen is 35 mm to 40 mm, and the imaging focal length of the lenticular lens corresponding to the second display screen is 20 mm to 26 mm.

In an exemplary embodiment of the present disclosure, the lenticular lens includes one of a spherical lens, an aspherical lens and a free-form lens, and the material of the lenticular lens includes plastic or glass; the reflecting mirror includes a spherical lens, One of an aspheric lens and a free-form lens, the material of the reflector includes plastic or glass, and the reflector includes a reflective film disposed facing the second display screen.

According to another aspect of the present disclosure, a wearable display device is also provided, including the display device according to any embodiment of the present disclosure.

The display device provided by the present disclosure uses a lenticular lens to transmit the first emitted light of the first display screen to achieve imaging of the first display image of the first display screen, and uses a reflector to reflect the second emitted light of the second display screen to the lenticular lens. , and then the second emergent light is reflected by the lenticular lens to realize the imaging of the second display image of the second display screen, and at the same time, the imaging of the second display image and the first display image form a continuous image without any seams, ensuring There will be no seam between the imaged first display image and the second display image, thereby solving the seam problem of the display device.

It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only, and do not limit the present disclosure.

Description of the drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic structural diagram of a display device according to an embodiment of the present disclosure;

2 to 3 are schematic structural diagrams of a display device according to another embodiment of the present disclosure;

Figure 4 is a schematic structural diagram of a lenticular lens in a display device according to an embodiment of the present disclosure;

Figure 5 is another structural schematic diagram of a lenticular lens in a display device according to an embodiment of the present disclosure;

Figure 6 is a schematic diagram of the optical path of the transmission area of the lenticular lens according to the embodiment of the present disclosure;

Figure 7 is a schematic diagram of the optical path of the reflection area of the lenticular lens according to the embodiment of the present disclosure;

Figure 8 is a schematic diagram of the optical path of the semi-transparent and semi-reflective area of the lenticular lens according to an embodiment of the present disclosure;

FIG. 9 is a schematic structural diagram of a display device according to another embodiment of the present disclosure.

Detailed ways

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments. To those skilled in the art. The same reference numerals in the drawings indicate the same or similar structures, and thus their detailed descriptions will be omitted. Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale.

It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of this disclosure should have the usual meanings understood by those with ordinary skills in the field to which this disclosure belongs. The "first", "second" and similar words used in the embodiments of the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprising" mean that the elements or things appearing before the word include the elements or things listed after the word and their equivalents, without excluding other elements or things. Words such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right", etc. are only used to express relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

The near-eye display device refers to a display device worn on the user's eyes. For example, the near-eye display device is usually in the form of glasses or a helmet. Near-eye display devices can provide users with AR and VR experiences. Among them, AR near-eye display technology superimposes the virtual image generated by the near-eye display device with the real-world image of the real world, so that the user can see the final enhanced real-scene image on the screen. VR near-eye display technology displays the images of the left and right eyes respectively on the corresponding near-eye displays for the left and right eyes. After the left and right eyes respectively obtain the different image information, stereoscopic vision can be synthesized in the brain.

As mentioned in the background art, in the prior art, in order to improve the field of view of virtual reality display products, this is usually achieved by splicing display screens. However, when multiple display screens are spliced together, since each display screen is spliced on the same plane, the spliced display screen will have seams. Correspondingly, it will also have seams when it is displayed. As seen by the human eye, There will also be seams in the images, which greatly affects the display effect of virtual reality display products.

In view of this, embodiments of the present disclosure provide a display device, which can not only improve the viewing angle of the display device through splicing of display screens, but also solve the problem of splicing.

As shown in Figure 1, the display device may include at least one set of display modules. One set of display modules of the present disclosure may correspond to one eye box. For example, in a VR display device, it may usually include two sets of display modules and two eye boxes. Each set of display modules is imaged at the corresponding eye box, so that the user can sense images with both eyes by wearing the eye box. The two sets of display modules of the present disclosure may have the same working principle. The figure shows a schematic structural diagram of one set of display modules to illustrate the working principle of the display device of the present disclosure. As shown in Figure 1, the display module may include a first display screen 1, a lenticular lens 2, a second display screen 3 and a reflector 4. The lenticular lens 2 is disposed on the light exit side of the first display screen 1 for transmitting the first display screen. The first emitted light of the screen 1 is used to image the first display image of the first display screen 1; the second display screen 3 is arranged at one end of the lenticular lens 2 so that the second emitted light of the second display screen 3 is not blocked by the lenticular lens 2 Blocking; the reflector 4 is arranged on the light exit side of the second display screen 3 and is located on the side of the lenticular lens 2 away from the first display screen 1, for reflecting the second emitted light of the second display screen 3 to the lenticular lens 2; the lenticular lens 2 is used to reflect the second emitted light reflected by the reflector 4, so that the second display image of the second display screen 3 and the imaging of the first display image form a continuous image.

The display device provided by the present disclosure uses a lenticular lens to transmit the first emitted light of the first display screen to achieve imaging of the first display image of the first display screen, and uses a reflector to reflect the second emitted light of the second display screen to the lenticular lens. , and then the second emergent light is reflected by the lenticular lens to achieve the second display The imaging of the second display image of the screen simultaneously enables the imaging of the second display image and the first display image to form a continuous image without any seams, ensuring that there is no gap between the first display image and the second display image after imaging. There will be seams, which solves the seam problem of the display device.

The first display screen 1 and the second display screen 3 of the present disclosure serve as image sources for displaying images. The first display screen 1 can be used to display a first display image, and the second display screen 3 can be used to display a second display image. Both the first display image and the second display image can include at least part of the image displayed by the display device. The splicing of the first display image and the second display image forms a complete image for the user to view.

In an exemplary embodiment, the first display screen 1 and the second display screen 3 may be a liquid crystal display (LCD), an organic light-emitting diode display (OLED) or a micro organic light-emitting diode display (Micro OLED). Make limitations. The size of the first display screen 1 and the second display screen 3 in the display device are usually small, generally ranging from 0.39” to 5.7”, and are installed in the display device. In specific implementation, a higher resolution display can be used screen, thus providing a more detailed display image.

The lenticular lens 2 is disposed on the light exit side of the first display screen 1 and is used to transmit the first exit light of the first display screen to image the first display image of the first display screen. The first emitted light of the first display screen 1 first enters the lenticular lens 2, is amplified by the lenticular lens 2, and then converges to the eye box 5 of the display device, so that the first display image of the first display screen 1 It can image at eye box 5, which is where the human eye is.

The second display screen 3 is disposed at one end of the lenticular lens 2 so that the second emitted light of the second display screen 3 is not blocked by the lenticular lens 2 . It can be known that the lenticular lens 2 has an optical axis and has two ends that are symmetrical about the optical axis. The second display screen 3 is located on one side of one end of the lenticular lens 2 , so that the second display screen 3 is close to the lenticular lens 2 Part of the second emitted light on one side will not be blocked by the lenticular lens 2, that is to say, the lenticular lens 2 will not be located on the optical path of the second emitted light, and the second emitted light will not be incident on the lenticular lens 2 close to the first display screen 1 side of the mirror surface, so that the lenticular lens 2 will not block the second emergent light.

The reflector 4 is disposed on the light exit side of the second display screen 3 and is located on the side of the lenticular lens 2 away from the first display screen 1 for reflecting the second emitted light of the second display screen 3 to The lenticular lens 2.

The lenticular lens 2 is also used to reflect the second emergent light reflected by the reflector 4, so that the second display image of the second display screen 3 forms a connection with the imaging of the first display image. Continued image. Wherein, the imaging of the second display image and the first display image forms a continuous image means that the imaging image of the second display image partially overlaps or is connected but does not overlap with the imaging image of the first display image, that is, the second The spliced image formed by the display image and the first display image does not have splicing seams. For example, when the second display image and the first display image are imaged at the position of the human eye, the image formed by splicing the second display image and the first display image observed by the human eye is a spliced continuous image.

In this embodiment, the second emitted light from the second display screen 3 will be incident on the reflector 4 after being emitted, and the reflector 4 will reflect the second emitted light to the side of the lenticular lens 2 away from the first display screen 1 On the mirror surface, the lenticular lens 2 will then reflect the second emitted light to the imaging position of the first emitted light, so that the imaging of the second display image and the first display image form a continuous image without seams, thereby making the imaging There will be no seam between the first display image and the second display image to the human eye.

In this embodiment, the first emitted light of the first display screen is transmitted through a lenticular lens to achieve imaging of the first display image of the first display screen, and the second emitted light of the second display screen is reflected to the lenticular lens by a reflector. The second emergent light is reflected by the lenticular lens to achieve imaging of the second display image on the second display screen, which can simultaneously form a continuous image with the imaging of the second display image and the first display image, ensuring that the first display image after imaging is There will be no seam between the second display image and the second display image, thus solving the seam problem of the display device.

In an exemplary embodiment, the display device may be a near-eye display device, such as an AR display device or a VR display device.

In some embodiments of the present disclosure, as shown in FIG. 1 , the second display screen 3 is provided between the first display screen 1 and the lenticular lens 2 . In other embodiments of the present disclosure, as shown in FIG. 2 , the second display screen 3 can also be disposed on the backlight side of the first display screen 1 , that is, on the side of the first display screen 1 away from the double lenticular lens 2 . In some further embodiments of the present disclosure, as shown in FIG. 3 , the second display screen 3 can also be disposed on the side of the lenticular lens 2 away from the first display screen 1 , that is, the second display screen 3 and the reflector 4 They are located on the same side of the lenticular lens 2 and are located on the side of the lenticular lens 2 away from the first display screen 1 . This disclosure does not limit this.

In some embodiments, as shown in FIG. 4 , the lenticular lens 2 may include a transmissive area 201 and a reflective area 202 . The transmission area 201 may include an anti-reflection film disposed on the side of the lenticular lens 2 away from the first display screen 1 , and the transmission area 201 is used to transmit at least part of the first outgoing light; the reflection area 202 may including being disposed on the lenticular lens 2 away from the first display The reflective area 202 is an anti-reflective film on one side of the screen 1 and is used to reflect at least part of the second emitted light reflected by the reflector 4 .

In this embodiment, as shown in Figure 6, the first emitted light of the first display screen 1 is incident on the transmission area 201 of the lenticular lens 2, and is transmitted through the transmission area 201 to achieve imaging of the first display image; as shown in Figure 7 , the second emitted light from the second display screen 3 is reflected by the reflector 4 and then enters the reflective area 202 of the lenticular lens 2 . After being reflected by the reflective area 202 , the second display image is formed.

Among them, the anti-reflection film is attached to the mirror surface of the side of the lenticular lens 2 away from the first display screen 1 and is located in the transmission area 201. By providing the anti-reflection film, the first emergent light can be reduced or eliminated from passing through the transmission area. 201 hours of reflected light, thereby reducing or eliminating stray light in the display device. The anti-reflective film is attached to the mirror surface of the side of the lenticular lens 2 away from the first display screen 1 and is located in the reflective area 202. By providing the anti-reflective film, the transmittance reflected from the reflective mirror 2 to the reflective area 202 can be reduced. And improve its reflectivity, thereby weakening or even preventing stray light reflected by the second display screen 3 from the reflector 2 from reaching human eyes.

In this embodiment, as shown in FIG. 4 , the lenticular lens 2 may only include a transmissive area 201 and a reflective area 202 , and allow the first emitted light to pass through the transmissive area 201 and the second emitted light to be reflected by the reflective area 202 The imaging images can be spliced together exactly, thereby solving the problem of splicing of images displayed in the display device.

In other embodiments, as shown in FIG. 5 , the lenticular lens 2 may not only include a transmissive area 201 and a reflective area 202 , but may also include a semi-transmissive and semi-reflective area 203 . The semi-transparent and semi-reflective area 203 is located between the transmissive area 201 and the reflective area 203 . The semi-transmissive and semi-reflective area 203 may include a lens disposed on the side of the lenticular lens 2 away from the first display screen 1 . Semi-transparent and semi-reflective film; the semi-transparent and semi-reflective area 203 is used to transmit part of the first emitted light and reflect part of the second emitted light, so that the imaging of part of the first display image is consistent with part of the third emitted light. The imaging of the two displayed images overlaps. In this embodiment, the semi-transparent and semi-reflective area 203 is located between the transmissive area 201 and the reflective area 202 , and the semi-transparent and semi-reflective film can be attached to the mirror surface of the side of the lenticular lens 2 away from the first display screen 1 And located between the anti-reflection coating and the anti-reflection coating. As shown in FIG. 8 , the semi-transparent and semi-reflective area 203 corresponds to the field of view overlapping area, and the semi-transparent and semi-reflective area 203 overlaps part of the imaging of the first display image and part of the imaging of the second display image, so as to avoid overlapping. There is an obvious seam between the first display screen 1 and the second display screen 3.

In some embodiments, the size of the overlapping area corresponding to the semi-transparent and semi-reflective area 203 is related to the overlapping field of view range Δθ and the distance L between the human eye and the lenticular lens 2 , that is, the overlapping area = tan (θ1) * L -tan(θ2)*L, θ1-θ2=Δθ, where the optional angle of Δθ is 3°~5°, L The optional range is 25mm~35mm.

In other embodiments, continuing to refer to Figures 1 and 5, the light emitted from both ends of the first display screen 1 is the main incident area 100 in the area covered by the side of the lenticular lens 2 close to the first display screen 1; where , the side surface of the lenticular lens 2 close to the first display screen 1 is located in the main incident area 100 and is provided with an anti-reflection film, and the side surface of the lenticular lens 2 close to the first display screen 1 is located between the main incident area 100 and the lenticular lens 2 The area between the edges is provided with a light absorbing layer 300 . Specifically, an anti-reflection coating is provided on the portion of the mirror surface of the side of the lenticular lens 2 close to the first display screen 1 located in the transmission area 201, thereby reducing or eliminating the reflected light when the first emitted light passes through the transmission area 201, thereby reducing or Eliminate stray light from display devices. It can be understood that the light emitted from the first display screen enters the lenticular lens through the main incident area 100, and is thus imaged at the human eye through the converging effect of the lenticular lens. The part of the lenticular lens close to the first display screen and located outside the main incident area 100 does not contribute to the imaging of the emitted light of the first display screen. Therefore, by locating the surface of the lenticular lens 2 on the side close to the first display screen 1 Providing a light absorbing layer 300 in the area between the main entrance area 100 and the edge of the lenticular lens 2 can reduce or eliminate stray light in the display device. The light-absorbing layer 300 can be realized by blackening the area on the side surface of the lenticular lens 2 close to the first display screen 1 between the main incident area 100 and the edge of the lenticular lens 2 to prevent stray light through the black coating. for absorption.

In some embodiments, an anti-reflection film can also be provided on the entire mirror surface of the lenticular lens 2 close to the first display screen 1 to reduce noise by designing the mirror surface shape of the lenticular lens 2 . The effects of astigmatism.

In addition, in some embodiments, a semi-transparent and semi-reflective film can be provided on the entire side of the lenticular lens 2 away from the first display screen. By designing the mirror surface, the second display screen 3 can be weakened or even prevented. The stray light reflected by the reflector 4 reaches the human eye.

In some embodiments, the center of the first display screen 1 is located on the optical axis of the lenticular lens 2 , and the corresponding imaging viewing angle of the first display screen 1 is symmetrical with respect to the optical axis of the lenticular lens. Among them, the transmissive area 201 is arranged at the center of the lenticular lens 2 , the reflective area 202 is arranged at the edge of the lenticular lens 2 , and the reflective area 202 is arranged around the transmissive area 201 .

As shown in FIGS. 1 to 5 , the second display screen 3 may include a first sub-display screen and a second sub-display screen that are symmetrically arranged relative to the first display screen 1 , so that the first sub-display screen is symmetrically arranged. The display screen and the second sub-display screen are spliced with the first display screen 1 to display images. Correspondingly, the reflector It may also include a first sub-reflector disposed on the light exit side of the first sub-display and a second sub-reflector disposed on the second sub-display to respectively solve the problem between the first sub-display and the first display 1. The seam problem between the first display screen 1 and the second sub-display screen.

In this embodiment, the first sub-display screen and the second sub-display screen can be arranged in a vertical direction, or they can also be arranged in a horizontal direction, or they can also be arranged at a preset angle with the horizontal direction, which is not done in this embodiment. limit.

Taking the first sub-display and the second sub-display arranged vertically as an example, assuming that the first sub-display is located above the first display 1 and the second sub-display is located below the first display 1, correspondingly The first sub-reflector is disposed above the side of the lenticular lens 2 away from the first display screen 1 , and the second sub-reflector is disposed below the side of the lenticular lens 2 away from the first display screen 1 .

As shown in FIG. 7 , the second emitted light from the partial area of the first sub-display screen away from the lenticular lens 2 is reflected by the first sub-reflector and then enters the reflection area 202 above the lenticular lens 2 . It is then reflected by the reflection area 202 and then emitted. The eye box 5 is located for imaging; the second emitted light from a part of the lenticular lens 2 of the second sub-display is reflected by the second sub-reflector and then enters the reflection area 202 below the lenticular lens 2, and then passes through the reflection area 202 After reflection, it is emitted into the position of the eye box 5 for imaging.

As shown in Figure 8, the second emitted light from the partial area of the first sub-display screen close to the lenticular lens 2 is reflected by the first sub-reflector and then enters the semi-transparent and semi-reflective area 203 above the lenticular lens 2. The area 203 reflects part of the emitted light to the position of the eye box 5; the first emitted light from the partial area of the first display screen 1 close to the first sub-display is incident on the semi-transparent and semi-reflective area 203 above the lenticular lens 2, and passes through the semi-transparent semi-reflective area 203. The imaging area of the first outgoing light transmitted through the transflective area 203 to the position of the eye box 5 overlaps with the imaging area of the second outgoing light reflected through the first sub-mirror and the transflective area 203 .

Correspondingly, the second emitted light from the partial area of the second sub-display close to the lenticular lens 2 is reflected by the second sub-reflector and then enters the semi-transparent and semi-reflective area 203 below the lenticular lens 2, and is passed through the semi-transparent and semi-reflective area 203. Part of the emitted light is reflected to the position of the eye box 5; the first emitted light from the partial area of the first display screen 1 close to the second sub-display is incident on the semi-transparent and semi-reflective area 203 below the lenticular lens 2, and passes through the semi-transparent and semi-reflective area. The imaging area of the first emitted light transmitted to the position of the eye box 5 through the area 203 overlaps with the imaging area of the second emitted light reflected by the second sub-reflector and the transflective area 203 . Wherein, the first sub-display screen and the second sub-display screen can be bar-shaped display screens arranged opposite each other, or the first sub-display screen and the second sub-display screen can also be display screens of any shape, or the second display screen can be The screen 3 may also include a ring-shaped display screen arranged around the first display screen 1, which is not shown in this embodiment.

In some embodiments, the orthographic projection of the second display screen 3 on the plane where the first display screen 1 is located may partially overlap with the first display screen 1 , or may not overlap at all, which is not limited in this embodiment.

Optionally, in this embodiment, the imaging angle corresponding to the first display screen 1 can be greater than the imaging angle corresponding to the second display screen 3, or if necessary, the imaging angle corresponding to the first display screen 1 can also be equal to or smaller than The imaging angle corresponding to the second display screen 3 is not limited in this embodiment. The total field of view angle of the display device in this embodiment is 1--150°, which can reach the visual limit of human eyes.

In some embodiments, the imaging angles corresponding to the first sub-display screen and the second sub-display screen may be symmetrical about the optical axis of the lenticular lens 2, so that the first sub-display screen and the second sub-display screen can be symmetrical about the optical axis of the lenticular lens 2. The corresponding viewing angles of the two sub-displays are the same.

When the field of view angles corresponding to the first sub-display screen and the second sub-display screen are the same, the imaging angle range corresponding to the transmission area 201 is -40° to 40°, and the imaging angle range corresponding to the reflection area 202 The viewing angle ranges are -55° to 35° and 35° to 55°, and the imaging viewing angle ranges corresponding to the semi-transparent and semi-reflective area 203 are -40° to -35° and 35° to 40°. In other embodiments, the imaging angles corresponding to the first sub-display screen and the second sub-display screen are asymmetrical with respect to the optical axis of the lenticular lens, and are close to the first sub-display screen inside the human eye. The corresponding imaging angle is smaller than the corresponding imaging angle of the second sub-display close to the outside of the human eye, thereby preventing interference between the left and right optical systems. For example, as shown in Figure 9, the display module may include two groups of display modules 10. One group of display modules 10 corresponds to one eye box 5. Each group of display modules 10 is imaged at the corresponding eye box 5, so that the user can The worn eye box 5 observes the imaging of the corresponding display module 10 . The second sub-display 3-2 is located on the side of the first sub-display 3-1 away from the other display module 10. The imaging angle of the first sub-display 3-1 is different from that of the second sub-display in the same display module 10. The imaging angle of view of 3-2 is asymmetrical with respect to the optical axis of the lenticular lens, and the imaging angle of view corresponding to the first sub-display 3-1 is smaller than the imaging angle of view of the second sub-display 3-2 in the same display module 10, that is, close to the person The imaging angle corresponding to the first sub-display 3-1 inside the eye is smaller than the imaging angle corresponding to the second sub-display 3-2 close to the outside of the human eye.

In some embodiments, the second display image and the first display image are imaged at the eye box 5 , which is where the human eye is located, and the horizontal distance between the eye box 5 and the second display screen 3 is 15 to 15 20mm, which is equivalent to an exit pupil distance of 15 to 20mm, which can prevent the human eye from being too close to the display device and make it more convenient for the audience to wear.

Optionally, the size of the eye box 5 at the position of the human eye is Φ8mm to Φ10mm.

In some embodiments, the imaging focal length f1 of the lenticular lens 2 corresponding to the first display screen 1 is 35 mm to 40 mm, and the imaging focal length f2 of the lenticular lens 2 corresponding to the second display screen 2 is 20 mm to 20 mm. 26mm.

In the display device described in the embodiment of the present disclosure, the surface shapes of the lenticular lens 2 and the mirror 4 and the distance between them will affect the imaging quality. The embodiment of the present disclosure takes into account field curvature, distortion, optical transfer function, etc. Aspect factors determine the spacing between optical components and the surface shape of each optical component.

Specifically, the lenticular lens 2 may include one of a spherical lens, an aspherical lens, and a free-form lens, and the material of the lenticular lens 2 may include plastic or glass; the reflecting mirror 4 may include a spherical lens, a non-spherical lens, or a non-spherical lens. One of a spherical lens and a free-form lens, the material of the reflector 4 may include plastic or glass, and the reflector 4 may include a reflective film disposed facing the second display screen 3 .

Based on the same inventive concept, corresponding to the display device described in any of the above embodiments, the present disclosure also provides a wearable display device, which may include the display device as described in any of the above embodiments. For example, the wearable display device may be a wearable VR helmet, VR glasses, etc.

In this embodiment, when the display device described in this embodiment is used to make wearable display devices such as VR helmets and VR glasses, two symmetrically arranged display devices described in this embodiment can be used to make both VR helmets and VR glasses. The lenses correspond to the left eye and the right eye respectively. There may be some information differences in the images displayed on the display screens corresponding to the left eye and the right eye. In this way, after the left eye and the right eye receive the corresponding images, they can be processed in the brain. The images are synthesized to produce a three-dimensional visual effect. This enables VR display for both eyes of the user.

The wearable display device of the above embodiments may include the corresponding display device in any of the foregoing embodiments, and has the beneficial effects of the corresponding display device embodiments, which will not be described again here.

Those of ordinary skill in the art should understand that the discussion of any above embodiments is only illustrative, and is not intended to imply that the scope of the present disclosure (which may include claims) is limited to these examples; under the spirit of the present disclosure, the above embodiments Alternatively, technical features in different embodiments may be combined, steps may be implemented in any order, and there are many other variations of different aspects of the disclosed embodiments as described above, which are not provided in detail for the sake of simplicity.

Additionally, to simplify illustration and discussion, and so as not to obscure embodiments of the present disclosure, well-known power supplies/components with integrated circuit (IC) chips and other components may or may not be shown in the provided figures. Ground connection. Furthermore, devices may be shown in block diagram form in order to avoid obscuring the embodiments of the present disclosure, and this also takes into account the fact that details regarding the implementation of these block diagram devices are highly dependent on the implementation of the disclosed embodiments. platform (i.e., these details should be well within the understanding of those skilled in the art). Where specific details (eg, circuits) are set forth to describe exemplary embodiments of the present disclosure, it will be apparent to those skilled in the art that systems may be constructed without these specific details or with changes in these specific details. The embodiments of the present disclosure are implemented below. Accordingly, these descriptions should be considered illustrative rather than restrictive.

Although the present disclosure has been described in conjunction with specific embodiments thereof, many alternatives, modifications, and variations of these embodiments will be apparent to those of ordinary skill in the art from the foregoing description. For example, other memory architectures such as dynamic RAM (DRAM) may use the discussed embodiments.

The disclosed embodiments are intended to embrace all such alternatives, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

A display device, which includes at least one group of display modules, the display modules including:

first display screen;

A lenticular lens, disposed on the light exit side of the first display screen, used to transmit the first exit light of the first display screen to image the first display image of the first display screen;

A second display screen is provided at one end of the lenticular lens so that the second emitted light of the second display screen is not blocked by the lenticular lens;

A reflector, disposed on the light exit side of the second display screen and located on the side of the lenticular lens away from the first display screen, for reflecting the second emitted light of the second display screen to the lenticular lens;

Wherein, the lenticular lens is also used to reflect the second emergent light reflected by the reflector, so that the second display image of the second display screen and the imaging of the first display image form a continuous image.
The display device according to claim 1, wherein the lenticular lens includes:

A transmission area, including an anti-reflection film disposed on the side of the lenticular lens away from the first display screen, for transmitting at least part of the first emergent light;

The reflective area includes an anti-reflection film disposed on the side of the lenticular lens away from the first display screen, for reflecting at least part of the second emitted light reflected by the reflector.
The display device according to claim 2, wherein the lenticular lens further includes:

A semi-transparent and semi-reflective area is located between the transmissive area and the reflective area, and includes a translucent and semi-reflective film disposed on the side of the lenticular lens away from the first display screen. The semi-transparent and semi-reflective area is Part of the first emitted light is transmitted and part of the second emitted light is reflected, so that part of the imaging of the first display image overlaps part of the imaging of the second display image.
The display device according to claim 1, wherein the light emitted from both ends of the first display screen is the main incident area in the area covered by the side of the lenticular lens close to the first display screen;

Wherein, an anti-reflection film is provided on a side surface of the lenticular lens close to the first display screen and located in the main incident area, and a side surface of the lenticular lens close to the first display screen is located in the main incident area. A light-absorbing layer is provided in the area between the incident area and the edge of the lenticular lens.
The display device according to claim 1, wherein the lenticular lens is close to the An entire side of the first display screen is provided with an anti-reflection film.
The display device according to claim 1, wherein the center of the first display screen is located on the optical axis of the lenticular lens, and the imaging angle corresponding to the first display screen is symmetrical with respect to the optical axis of the lenticular lens. .
The display device according to claim 3, wherein the imaging viewing angle range corresponding to the transmissive area is -40° to 40°, and the imaging viewing angle range corresponding to the reflective area is -55° to 35° and 35° to 55°. °, the imaging viewing angle range corresponding to the semi-transparent and semi-reflective area is -40°~-35° and 35°~40°.
The display device according to claim 1, wherein the center of the first display screen is located on the optical axis of the lenticular lens, and the second display screen includes a screen located at both ends of the lenticular lens and relative to the The first display screen has a first sub-display screen and a second sub-display screen that are symmetrically arranged, and the imaging angles corresponding to the first sub-display screen and the second sub-display screen are symmetrical with respect to the optical axis of the lenticular lens.
The display device according to claim 1, wherein the display device includes two groups of display modules;

The center of the first display screen is located on the optical axis of the lenticular lens in the same display module, and the second display screen includes a third display screen located at both ends of the lenticular lens and arranged symmetrically with respect to the first display screen. A sub-display screen and a second sub-display screen. The first sub-display screen is located on the side of the second sub-display screen away from the other display module. The imaging angle of the first sub-display screen is the same as that in the same display module. The imaging viewing angle of the second sub-display is asymmetrical with respect to the optical axis of the lenticular lens, and the imaging viewing angle corresponding to the first sub-display is smaller than the imaging viewing angle corresponding to the second sub-display in the same display module .
The display device according to claim 1, wherein a semi-transparent and semi-reflective film is provided on the entire side of the lenticular lens away from the first display screen.
The display device according to claim 1, wherein the second display image and the first display image of the display module are imaged at an eye box provided corresponding to the display module, where the eye box is located The horizontal distance from the second display screen is 15-20mm, and the size of the eye box is Φ8mm-Φ10mm.
The display device according to claim 1, wherein the imaging focal length of the lenticular lens corresponding to the first display screen is 35 mm to 40 mm, and the imaging focal length of the lenticular lens corresponding to the second display screen is 20 mm to 20 mm. 26mm.
The display device according to claim 1, wherein the lenticular lens includes one of a spherical lens, an aspherical lens and a free-form lens, and the material of the lenticular lens includes plastic or glass;

The reflector includes one of a spherical lens, an aspherical lens and a free-form lens, the material of the reflector includes plastic or glass, and the reflector includes a reflective film disposed facing the second display screen.
A wearable display device, comprising the display device according to any one of claims 1-13.