Display assembly

Abstract

The utility model discloses a display assembly, and relates to the technical field of optical display, the display assembly comprises an optical waveguide and at least two optical machines, the optical waveguide comprises at least two coupling-in areas and a coupling-out area, the coupling-in areas at least correspond to one optical machine, and the coupling-out area corresponds to the other optical machine. An image light beam emitted by each light machine is coupled into the optical waveguide through the corresponding coupling-in area and is coupled out of the coupling-out area to form a coupled-out image after being totally reflected and propagated in the optical waveguide, the coupled-out images formed by the multiple light machines are overlapped to form an emergent image, at least two light machines are connected with a signal source, and the signal source is connected with the signal source. And coupled-out images formed by the at least two ray machines are mutually staggered. According to the display assembly provided by the invention, the resolution of the display assembly can be improved, and the display quality is improved.

Description

Technical Field

[0001] The present application relates to the field of optical display technology, and in particular, to a display component. Background Art

[0002] Augmented reality (AR) technology is a technology that calculates the position and angle of the image emitted by the light engine system (also called a projector or light engine) in real time and adds the corresponding image. Augmented reality technology can realize the virtual world on the screen and interact with the real world. That is, physical information that is difficult to experience within the time and space of the real world (such as visual information, sound, or touch, etc.) can be simulated by computers and then superimposed, and virtual information can be applied to the real world. Because augmented reality technology makes it possible for the virtual world to interact with the real world, it has been widely used in AR devices. Common AR devices include AR glasses, car-mounted AR-HUD and handheld AR devices.

[0003] Among them, handheld AR devices are similar to mobile phones and tablets, and portability and comfort must also be considered. Therefore, the material selection, device size, weight and energy consumption management of AR devices are the design points. Material science plays a key role here. Materials with high transparency, low weight and high optical performance are the basis for achieving high-quality optical waveguides. However, the resolution of handheld AR devices in the prior art is not high enough, so that handheld AR devices cannot display high quality. Utility Model Content

[0004] The purpose of the present application is to provide a display component that can increase the resolution of the display component to improve the display quality.

[0005] On the one hand, an embodiment of the present application provides a display component, including an optical waveguide and at least two optical machines, the optical waveguide including at least two coupling-in regions and one coupling-out region, the coupling-in region corresponding to at least one optical machine, an image light beam emitted by each optical machine is coupled into the optical waveguide through the corresponding coupling-in region, and is coupled out by the coupling-out region to form an out-coupled image after total reflection propagation in the optical waveguide, the coupling-out images formed by multiple optical machines are superimposed to form an output image, wherein at least two optical machines are respectively connected to signal sources, and the coupling-out images formed by at least two optical machines are offset from each other.

[0006] As an implementable manner, the optical waveguide further includes a turning region corresponding to the coupling-in region, and the image light beams coupled into the coupling-in region are turned through the corresponding turning region and then coupled out from the coupling-out region.

[0007] As an implementable manner, the optical machine includes two optical machines, and two coupling-in areas corresponding to the optical machines are arranged on the optical waveguide. The image light beams emitted by the optical machine are coupled in through the corresponding coupling-in areas and coupled out by the coupling-out areas respectively. The coupled-out images formed by the two optical machines are staggered in the horizontal direction and / or vertical direction.

[0008] As an implementable manner, the offset distance in the horizontal direction and the offset distance in the vertical direction do not exceed one pixel.

[0009] As an implementable manner, the two coupled images are offset by 0.5 pixels in the horizontal direction and by 1 pixel in the vertical direction.

[0010] As an implementable manner, the offset distances in the horizontal direction and the vertical direction are the same.

[0011] As an implementable manner, two turning regions are arranged on both sides of the out-coupling region along the first direction, and in the second direction, the two ends of the turning region are flush with the two ends of the out-coupling region, the coupling region is arranged at one end of the corresponding turning region, and the two coupling regions are located on both sides of the out-coupling region along the second direction, and the first direction is perpendicular to the second direction.

[0012] As an practicable manner, the two turning regions are rotationally symmetric about the center of the outcoupling region, and the two incoupling regions are rotationally symmetric about the center of the outcoupling region.

[0013] As an implementable method, the optical machines include three, and three coupling-in areas corresponding to the optical machines are arranged on the optical waveguide. Image light beams emitted by two of the optical machines are coupled in through the corresponding coupling-in areas and then propagate to the coupling-out areas through the turning of the same turning area. The coupling-out images formed by the three optical machines are offset from each other in the parallel direction or the vertical direction.

[0014] As an implementable manner, three optical machines respectively form a first out-coupled image, a second out-coupled image and a third out-coupled image, the first out-coupled image and the second out-coupled image are offset in the horizontal direction, and the first out-coupled image and the third out-coupled image are offset in the vertical direction.

[0015] The beneficial effects of the embodiments of the present application include:

[0016] The display assembly provided by the present application includes an optical waveguide and at least two optical machines, wherein the optical waveguide includes at least two coupling-in regions and one coupling-out region, wherein the coupling-in region corresponds to at least one optical machine, wherein the image light beam emitted by each optical machine is coupled into the optical waveguide through the corresponding coupling-in region, and after being totally reflected and propagated in the optical waveguide, it is coupled out by the coupling-out region to form a coupling-out image, and the coupling-out images formed by multiple optical machines are superimposed to form an output image, wherein at least two optical machines are used to be connected to a signal source respectively, and the coupling-out images formed by at least two optical machines are mutually dislocated, so that the pixels of each coupling-out image are dislocated. The pixels of each coupling-out image are dislocated, and the gaps between the pixels of one coupling-out image are filled by the pixels of another or several coupling-out images, so that more pixels can be filled in a screen of the same size, thereby improving the resolution of the output image, and further improving the display quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of the structure of a display assembly provided in an embodiment of the present application;

[0019] Figure 2 One of the structural schematic diagrams of an optical waveguide provided in an embodiment of the present application;

[0020] Figure 3 One of the schematic diagrams of an output image of a display component provided in an embodiment of the present application;

[0021] Figure 4 A second schematic diagram of an output image of a display component provided in an embodiment of the present application;

[0022] Figure 5 A third schematic diagram of an output image of a display component provided in an embodiment of the present application;

[0023] Figure 6 A schematic diagram of a display assembly in use according to an embodiment of the present application;

[0024] Figure 7 A second schematic diagram of the structure of an optical waveguide provided in an embodiment of the present application;

[0025] Figure 8 The fourth schematic diagram of an output image of a display component provided in an embodiment of the present application.

[0026] Icon: 100 - display component; 110 - optical machine; 120 - optical waveguide; 121 - coupling-in region; 122 - coupling-out region; 123 - turning region; 131 - coupling-out image; 132 - pixel point. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0029] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0030] The present application embodiment provides a display assembly 100, such as Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, it includes an optical waveguide 120 and at least two optical machines 110, the optical waveguide 120 includes at least two coupling-in regions 121 and one coupling-out region 122, the coupling-in region 121 corresponds to at least one optical machine 110, and the image light beam emitted by each optical machine 110 is coupled into the optical waveguide 120 through the corresponding coupling-in region 121, and is coupled out by the coupling-out region 122 to form a coupling-out image 131 after total reflection propagation in the optical waveguide 120, and the coupling-out images 131 formed by multiple optical machines 110 are superimposed to form an output image, wherein at least two optical machines 110 are respectively connected to a signal source, and the coupling-out images 131 formed by at least two optical machines 110 are mutually staggered, so that the pixel points 132 of each coupling-out image 131 are staggered.

[0031] The display assembly 100 provided in the embodiment of the present application is as follows: Figure 6As shown, it is applied to AR devices to transmit real and virtual images in front of people's eyes. Specifically, the display component 100 includes an optical waveguide 120 and at least two optical engines 110. The two optical engines 110 emit image light beams and transmit them to people's eyes through the optical waveguide 120 to form a virtual image; the optical waveguide 120 is transparent, so that the light in the real world is transmitted through the optical waveguide 120 to people's eyes, realizing the combination of virtual and reality.

[0032] Specifically, the optical waveguide 120 of the present application includes at least two coupling-in regions 121 and one coupling-out region 122, the coupling-in region 121 corresponds to at least one optical machine 110, and the image light beam emitted by each optical machine 110 is coupled into the optical waveguide 120 through the corresponding coupling-in region 121, and coupled out by the coupling-out region 122, each optical machine 110 is respectively connected to a signal source, and the coupling-out images 131 formed by each optical machine 110 are staggered with each other, so that the pixel points 132 of each coupling-out image 131 are staggered, and the gaps between the pixel points 132 of one coupling-out image 131 are filled with the pixel points 132 of another or several coupling-out images 131, so that more pixel points 132 can be filled in a screen of the same size, thereby improving the resolution of the output image and further improving the display quality.

[0033] It can be understood that the pixels of each coupled-out image are misaligned, and each coupled-out image is formed after the image light beam emitted by the corresponding optical machine is transmitted through the optical waveguide, so that the pixels in the image light beam emitted by each optical machine are misaligned. Specifically, there are two ways to misalign the pixels in the image light beam emitted by the optical machine. One is that the two optical machines respectively incident on the corresponding coupling-in areas at different angles, that is, changing the angle of the optical machine to the coupling-in area to achieve the misalignment; the other is that the display contents of the two optical machines are misaligned.

[0034] The specific structures of the optical engine 110 and the optical waveguide 120 are not limited in the embodiment of the present application. For example, they may be one of an LCOS optical engine, a DLP optical engine, and a MicroLED optical engine.

[0035] Optional, such as Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, the optical waveguide 120 further includes a turning region 123 corresponding to the coupling-in region 121 . The image light beams coupled into the coupling-in region 121 are turned through the corresponding turning region 123 and then coupled out from the coupling-out region 122 .

[0036] The image light beam coupled in through the coupling-in region 121 enters the coupling-out region 122 after being turned and expanded through the turning region 123, and is coupled out through the coupling-out region 122. The turning region 123 is used to turn the image light beam toward the coupling-out region 122, and propagates forward during the turning process, thereby achieving pupil expansion along the diffraction direction of the turning region 123, so that the imaging range is larger and easier to observe.

[0037] Among them, pupil dilation means expanding the imaging range. The larger the pupil dilation that the optical waveguide 120 can achieve, the smaller the exit pupil of the optical machine 110 can be made, that is, the smaller the optical machine 110 can be made, so as to be suitable for AR display devices.

[0038] Among them, the optical waveguide 120 can be a diffraction optical waveguide 120 or an array optical waveguide 120. When the diffraction optical waveguide 120 is used, the coupling-in region 121, the turning region 123 and the coupling-out region 122 are all set as diffraction gratings; the array optical waveguide 120 uses the principle of semi-reflection and semi-transmission to transmit the light path. The array optical waveguide 120 is internally formed by coating to form a mirror array composed of multiple mirrors. The mirror array transmits half of the propagated light and reflects half of it, so as to achieve the effect of expanding the pupil while propagating. Therefore, when the optical waveguide 120 of the present application adopts the array optical waveguide 120, the coupling-in region 121, the turning region 123 and the coupling-out region 122 are all set as semi-reflection and semi-mirror. Preferably, the diffraction optical waveguide 120 solution is adopted, because the process difficulty of the diffraction optical waveguide 120 is less than that of the array optical waveguide 120, and the diffraction optical waveguide 120 is easier to achieve pupil expansion.

[0039] Embodiment 1:

[0040] In one possible implementation of the embodiment of the present application, Figure 1 and Figure 2 As shown, the optical machine 110 includes two optical waveguides 120, and two coupling-in regions 121 corresponding to the optical machine 110 are arranged on the optical waveguide. The image light beams emitted by the optical machine 110 are coupled in through the corresponding coupling-in regions 121 and coupled out by the coupling-out region 122 respectively. The coupling-out images 131 formed by the two optical machines 110 are misaligned in the horizontal direction and / or the vertical direction.

[0041] In the embodiment of the present application, two optical machines 110 are arranged, and two coupling-in regions 121 are arranged on the optical waveguide 120 corresponding to the two optical machines 110. The two optical machines 110 are used to emit image beams simultaneously, and form coupled-out images 131 respectively after propagation through the optical waveguide 120, wherein the gaps between the pixels 132 of the coupled-out images 131, when the two coupled-out images 131 are superimposed to form an output image, due to the misalignment of the contents of the two coupled-out images 131 in the horizontal direction and / or the vertical direction, the pixels 132 of one coupled-out image 131 fill the gaps between the pixels 132 of the other coupled-out image 131, so that there are more pixels 132 in the same picture, so that the output image has more pixels, thereby improving the resolution of the output image and improving the display quality. When the display component 100 is applied to an AR device, the display quality of the AR device can also be improved.

[0042] The staggered manner of the two coupled-out images 131 is not limited in the present embodiment of the present application. For example, it can be as follows: Figure 3 As shown, it is displaced in the horizontal direction; it can also be displaced in the horizontal direction as shown. Figure 4 As shown, the vertical displacement can also be as Figure 5 As shown, the pixels are misaligned in both the horizontal and vertical directions, and the specific number of the misaligned pixels 132 is not limited in the embodiment of the present application.

[0043] Specifically, Figure 3 As shown, it is assumed that the horizontal duty cycle of each pixel 132 in the coupled image 131 is 2 / 3, that is, the horizontal spacing between two adjacent pixel points 132 is half a pixel point 132, as shown in FIG. Figure 3 The width of the blank area between the pixels 132 shown by the solid line is half of the pixel 132. When the two coupled images 131 are offset by half a pixel 132 in the horizontal direction, as shown in FIG. Figure 3 In the figure, there are multiple pixel points 132 of the solid line and multiple pixel points 132 of the dotted line, so that the pixel points 132 of the dotted line fill the gaps between the pixel points 132 of the solid line, thereby improving the resolution of the output image. Specifically, assuming that both optical machines 110 use an optical machine 110 with a lateral field of view of 30° and a lateral resolution of the output screen of 720P, when the coupled images 131 formed by the two optical machines 110 are horizontally offset by half a pixel point 132, the two optical machines 110 need to be offset by an angle a=30 / 720 / 2=0.0208°, so one of the two optical machines 110 is output with a left-right offset of 0.0208°. The two optical machines 110 light up the output image light beam at the same time, and the lateral resolution of the output image formed is 720P*1.5=1080P, which increases the resolution of the output image.

[0044] like Figure 4As shown, it is assumed that the longitudinal duty cycle of each pixel 132 in the coupled-out image 131 is 1 / 2, that is, the longitudinal spacing between two adjacent pixel points 132 is one pixel point 132, as shown in FIG. Figure 4 The height of the blank area between the pixels 132 shown by the solid line is the height of the pixel 132. When the two coupled images 131 are offset by one pixel 132 in the vertical direction, as shown in FIG. Figure 4 In the figure, there are multiple pixel points 132 of the solid line and multiple pixel points 132 of the dotted line, so that the pixel points 132 of the dotted line fill the gaps between the pixel points 132 of the solid line, thereby improving the resolution of the output image. Specifically, assuming that both optical machines 110 use an optical machine 110 with a longitudinal field of view of 40° and a longitudinal resolution of the output screen of 480P, when the coupled images 131 formed by the two optical machines 110 are offset by one pixel point 132 in the vertical direction, the two optical machines 110 need to be offset by an angle a=40 / 480=0.083°, so one of the two optical machines 110 is offset left and right by 0.083° in the output light beam. The two optical machines 110 light up the output image light beam at the same time, and the longitudinal resolution of the output image formed is 480P*2=960P, which means that the resolution of the output image is increased.

[0045] When both horizontal and vertical displacements are used, such as Figure 5 The multiple pixel points 132 of the solid line and the multiple pixel points 132 of the dotted line, assuming that both optical engines 110 use an optical engine 110 with a horizontal and vertical field of view of 40° and a horizontal resolution of the output image of 720P (1280*720), when the coupled images 131 formed by the two optical engines 110 are offset by half a pixel 132 in the horizontal and vertical directions, the two optical engines 110 need to be offset by an angle a=40 / 720 / 2=0.027° in both the horizontal and vertical directions, so one of the two optical engines 110 is offset by 0.027° in the left and right and upper lines of the output light. The two optical engines 110 light up the output image light beams at the same time, and the horizontal resolution of the output image formed is 1920×1080P, that is, the resolution of the output image is increased.

[0046] It can be understood that the embodiment of the present application needs to misalign the two out-coupling images 131, and specifically needs to adjust the position of the optical machine 110 relative to the coupling-in area 121. The angle at which the two optical machines 110 need to be offset from each other can be completed by one optical machine 110 or by two optical machines 110, as long as the two optical machines 110 are eventually offset from each other.

[0047] Optional, such as Figure 3 , such as 4 and Figure 5 As shown, the distance of the offset in the horizontal direction and the distance of the offset in the vertical direction do not exceed one pixel 132.

[0048] As can be seen from the above, the embodiment of the present application misaligns the pixels 132 of the outgoing images 131 of the two optical machines 110 so that the pixels 132 of one outgoing image 131 fill the gaps between the pixels 132 of the other outgoing image 131. Since the two outgoing images 131 share a common outgoing region 122, when there are many misaligned pixels 132, the outgoing region 122 needs to be increased to accommodate the misalignment between the two outgoing images 131, which will increase the volume of the optical waveguide 120. Therefore, the embodiment of the present application sets the number of pixels 132 misaligned in the horizontal direction and the number of pixels 132 misaligned in the vertical direction to no more than one, so that the resolution of the outgoing image is improved without increasing the volume of the optical waveguide 120.

[0049] In one implementable manner of the embodiment of the present application, the two out-coupled images 131 are offset by 0.5 pixel points 132 in the horizontal direction and by 1 pixel point 132 in the vertical direction.

[0050] like Figure 3 As shown, when the horizontal duty cycle of each pixel 132 in the coupled image 131 is 2 / 3, the two coupled images 131 are horizontally offset by 0.5 pixel 132, which can fully fill the gap between the pixels 132 and improve the resolution. Figure 4 As shown, the longitudinal duty cycle of each pixel 132 in the coupled-out image 131 is 1 / 2, and the two coupled-out images 131 are offset by one pixel 132 in the vertical direction.

[0051] It should be noted that the number of pixel points 132 that are misaligned in the horizontal and vertical directions is only one implementation of the present application and should not be considered as a limitation of the present application. Those skilled in the art can specifically set the pixel points 132 that are misaligned in the horizontal and vertical directions according to the duty cycle of the coupled-out image 131.

[0052] Optional, such as Figure 5 As shown, the offset distances in the horizontal and vertical directions are the same.

[0053] When the out-coupled image 131 is misaligned in both the horizontal and vertical directions, the number of misaligned pixel points 132 in the horizontal and vertical directions can be set to be the same, so that the optical machine 110 can be easily adjusted.

[0054] In one possible implementation of the embodiment of the present application, Figure 1 and Figure 2As shown, two turning regions 123 are arranged on both sides of the out-coupling region 122 along the first direction, and in the second direction, the two ends of the turning region 123 are flush with the two ends of the out-coupling region 122, the coupling region 121 is arranged at one end of the corresponding turning region 123, and the two coupling regions 121 are located on both sides of the out-coupling region 122 along the second direction, and the first direction is perpendicular to the second direction.

[0055] The turning regions 123 are arranged on both sides of the outcoupling region 122 along the first direction, and the incoupling region 121 is arranged on one side of the loading region, so that the surface area of ​​the optical waveguide 120 can be fully utilized, thereby reducing the volume of the optical waveguide 120 while achieving the same efficiency.

[0056] In addition, the two coupling-in regions 121 are located on both sides of the coupling-out region 122 along the second direction, and the image light beams emitted by the two optical machines 110 have opposite propagation directions in the turning region 123. In this way, the two image light beams have opposite propagation directions when they propagate and couple out in the coupling-out region 122. In this way, the two image light beams can complement each other's energy, thereby improving the uniformity of the emitted image.

[0057] Optional, such as Figure 2 As shown, the two turning regions 123 are rotationally symmetrical with respect to the center of the decoupling region 122 , and the two coupling regions 121 are rotationally symmetrical with respect to the center of the decoupling region 122 .

[0058] The two turning regions 123 and the two coupling-in regions 121 are rotationally symmetrical about the center of the coupling-out region 122 , so that the two image light beams can symmetrically supplement energy, further improving the uniformity of the image.

[0059] Embodiment 2:

[0060] Optional, such as Figure 7 As shown, the optical machine 110 includes three optical waveguides 120, and three coupling-in regions 121 corresponding to the optical machine 110 are arranged on the optical waveguide 120, and the image light beams emitted by two of the optical machines 110 are coupled in through the corresponding coupling-in regions 121 and then propagate to the coupling-out region 122 through the turning of the same turning region 123, and the coupling-out images 131 formed by the three optical machines 110 are offset from each other in the parallel direction or the vertical direction.

[0061] The three optical machines 110 emit image light beams to form an outgoing image 131, and the three outgoing images 131 are offset in the horizontal direction and / or the vertical direction. The horizontal or vertical offset of the three optical machines 110 can more fully fill the gaps between the pixel points 132, thereby further improving the resolution of the outgoing image.

[0062] When three coupling-in regions 121 are provided on the optical waveguide 120, coupling-in regions 121 are provided at both ends of one turning region 123. Figure 7 The image light beams emitted from the two optical engines 110 corresponding to the two coupling-in regions 121 are coupled into the corresponding coupling-in regions 121 and then turned in the same turning region 123 .

[0063] In one achievable manner of the embodiment of the present application, the three optical engines 110 respectively form a first out-coupling image, a second out-coupling image and a third out-coupling image, such as Figure 8 As shown, the first out-coupled image and the second out-coupled image are misaligned in the horizontal direction, and the first out-coupled image and the third out-coupled image are misaligned in the vertical direction.

[0064] The first coupled image and the second coupled image are offset in the horizontal direction, and the first coupled image and the third coupled image are offset in the vertical direction, so that the three coupled images use the first coupled image as a reference system, so that the second coupled image is horizontally offset relative to the first coupled image, and the third coupled image is vertically offset relative to the first coupled image, thereby increasing the magnification of the output image in the lateral and horizontal directions, thereby increasing the increase in the magnification of the output image.

[0065] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A display component, characterized in that: The invention comprises an optical waveguide and at least two optical machines, wherein the optical waveguide comprises at least two coupling-in regions and one coupling-out region, wherein the coupling-in region corresponds to at least one of the optical machines, and an image light beam emitted by each of the optical machines is coupled into the optical waveguide through the corresponding coupling-in region, and is coupled out by the coupling-out region to form a coupling-out image after propagating through total reflection in the optical waveguide, and the coupling-out images formed by a plurality of the optical machines are superimposed to form an output image, wherein at least two of the optical machines are respectively connected to a signal source, and the coupling-out images formed by at least two of the optical machines are mutually offset.

2. The display assembly according to claim 1, characterized in that The optical waveguide further includes a turning region corresponding to the coupling-in region, and the image light beams coupled into the coupling-in region are respectively turned through the corresponding turning region and then coupled out from the coupling-out region.

3. The display assembly according to claim 2, characterized in that: The optical machine comprises two, and two coupling-in regions corresponding to the optical machine are arranged on the optical waveguide. The image light beams emitted by the optical machine are coupled in through the corresponding coupling-in regions and coupled out by the coupling-out regions respectively. The coupled-out images formed by the two optical machines are staggered in the horizontal direction and / or the vertical direction.

4. The display assembly according to claim 3, characterized in that: The offset distance in the horizontal direction and the offset distance in the vertical direction do not exceed one pixel.

5. The display assembly according to claim 4, characterized in that: The two coupled images are offset by 0.5 pixels in the horizontal direction and by 1 pixel in the vertical direction.

6. The display assembly according to claim 3, characterized in that: The distances of the offset in the horizontal and vertical directions are the same.

7. The display assembly according to claim 3, characterized in that: The two turning regions are arranged on both sides of the out-coupling region along the first direction, and in the second direction, the two ends of the turning region are flush with the two ends of the out-coupling region, the coupling-in region is arranged at one end of the corresponding turning region, and the two coupling-in regions are located on both sides of the out-coupling region along the second direction, and the first direction is perpendicular to the second direction.

8. The display assembly according to claim 7, characterized in that: The two turning regions are rotationally symmetrical with respect to the center of the decoupling region, and the two coupling-in regions are rotationally symmetrical with respect to the center of the decoupling region.

9. The display assembly according to claim 2, characterized in that: The optical machines include three, and three coupling-in areas corresponding to the optical machines are arranged on the optical waveguide. Image light beams emitted by two of the optical machines are coupled in through corresponding coupling-in areas and then propagate to the coupling-out areas through the turning of the same turning area. The coupling-out images formed by the three optical machines are offset from each other in the parallel direction or the vertical direction.

10. The display assembly according to claim 9, characterized in that: The three optical machines respectively form a first out-coupling image, a second out-coupling image and a third out-coupling image, wherein the first out-coupling image and the second out-coupling image are misaligned in the horizontal direction, and the first out-coupling image and the third out-coupling image are misaligned in the vertical direction.

Images