Segmented display screen and VR equipment

Abstract

The present invention provides a segmented display screen and VR device. The segmented display screen includes a display screen group, a processing module, and a control module. The display screen group includes a first display portion and two second display portions, and the two second display portions are respectively arranged on opposite sides of the first display portion; the second display portion is provided with multiple sub-screens, and the multiple sub-screens are sequentially connected in a direction away from the first display portion; the processing module is used to obtain a display area and divide the display area into n sub-fields of view; the control module is used to distribute the n sub-fields of view to the first display portion and the multiple sub-screens for display. The technical solution of the present invention is to divide the second display portion into multiple continuous sub-screens. The display area is split into multiple sub-fields of view, and each sub-screen is responsible for displaying a sub-field of view separately, and finally a full-field imaging effect is formed on the entire display screen group. The pixel points of the edge field of view are effectively utilized to increase the image area and visible clarity observable to the user, thereby improving the display effect.

Description

Technical Field

[0001] The present invention relates to the field of VR technology, and in particular to a segmented display screen and VR equipment. Background Art

[0002] VR products have developed rapidly in recent years, with a wide variety of optical solutions proliferating. However, when it comes to the light source, namely the screen, these solutions are either candy-bar screens, curved screens with fixed curvature or display orientation, or spliced ​​screens. While these designs aim to enhance the field of view and immersion by increasing the display area (AA area), none of them fundamentally address issues such as poor image quality at the edges of the field of view.

[0003] Currently available optical solutions for various products aim to enhance user immersion by increasing screen resolution and increasing the AA area to improve PPI. Light carrying image information from the screen passes through a lens before entering the human eye. Because the lens deflects light, the image is sharpest in the center. As it transitions from the center to the edges, image distortion and distortion increase significantly. Due to factors like distortion field curvature, the densely packed pixels at the edges of the screen contribute differently to the overall image than those in the center. Even with an increased AA area, challenges such as increased distortion and noticeable chromatic aberration at the edges of the field of view still exist, impacting image quality and increasing the difficulty of pre-correcting distortion.

[0004] Existing technologies primarily use complex post-processing algorithms to restore distorted images to a certain degree. However, the effectiveness of this correction is limited, reaching a critical threshold. For example, for a VR headset with a 105° field of view, light carrying image information displayed at the edge of the screen will experience 30% to 40% distortion after passing through the lens. After an algorithmic reverse pre-correction, the image's edge distortion is reduced to 2% to 5% after passing through the lens, with no further reduction possible. The bottleneck lies in the fact that the optical path lengths of light rays emitted by a flat screen vary across different viewing areas. This optical path difference and the properties of the lens material determine the limits of the algorithmic correction method. Forced correction of image distortion can lead to issues such as increased chromatic aberration and decreased brightness. When users observe the edges of the screen display, they will see a degree of distortion and blur, impacting their immersion. Summary of the Invention

[0005] The main purpose of the present invention is to provide a segmented display screen and VR equipment, aiming to solve the technical problems in the prior art that the edge distortion phenomenon cannot be completely corrected, and excessive correction leads to increased color difference and decreased brightness of the image.

[0006] To achieve the above object, the present invention provides a segmented display screen, characterized in that the segmented display screen comprises:

[0007] A display screen group, the display screen group including a first display portion and two second display portions, the two second display portions being respectively arranged on two opposite sides of the first display portion;

[0008] The second display portion has a plurality of sub-screens, and the plurality of sub-screens are sequentially connected in a direction away from the first display portion;

[0009] a processing module, the processing module being configured to acquire a display area and divide the display area into n sub-fields of view;

[0010] A control module is used to distribute the n sub-fields of view to the first display unit and the plurality of sub-screens for display, so as to form a full-field image on the display screen group.

[0011] Optionally, the second display portion has seven sub-screens connected in sequence;

[0012] The processing module is further configured to equally divide the display area into twenty sub-fields of view;

[0013] The control module is further configured to control each of the sub-screens to display one sub-field of view, and to control the first display portion to display six sub-fields of view.

[0014] Optionally, the point where the curvature radius of the sub-screen intersects the optical axis of the first display portion is the curvature center of the corresponding sub-screen;

[0015] The center of curvature corresponding to each sub-screen is located on the same side of the first display portion, wherein the distance between the center of curvature corresponding to the sub-screen and the first display portion gradually increases in a direction away from the first display portion.

[0016] Optionally, the curvature radius is 15 mm to 150 mm.

[0017] Optionally, any two adjacent centers of curvature are spaced apart by a preset distance.

[0018] Optionally, the preset spacing is 5 mm to 50 mm.

[0019] Optionally, along the optical axis direction of the first display portion, a width ratio of the projection of the sub-screen to the projection of the display screen group is 1:n.

[0020] Optionally, the display screen groups are symmetrically arranged along the optical axis of the first display portion.

[0021] Optionally, two adjacent sub-screens are connected in a smooth transition manner, and the first display portion is connected in a smooth transition manner to the adjacent sub-screen.

[0022] In addition, to solve the above problems, the present invention also proposes a VR device, which uses the segmented display screen as mentioned above.

[0023] The technical solution of the present invention divides the second display unit on either side of the first display unit into multiple continuous sub-screens. This splits the display area into multiple sub-fields of view, with each sub-screen independently displaying a portion of the sub-field of view, ultimately creating a full-field imaging effect across the entire display array. This effectively utilizes pixels in the edge fields of view to increase the user's observable image area and visible clarity, improving the display quality, reducing the difficulty and requirements of image pre-correction algorithms, and conserving computing power. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0025] Figure 1 It is a structural schematic diagram of the segmented display screen of the present invention;

[0026] Figure 2 This is a front view of the segmented display screen of the present invention;

[0027] Figure 3 for Figure 2 Dimensioning diagram of

[0028] Figure 4 It is a side view of the segmented display screen of the present invention.

[0029] Description of Figure Numbers:

[0030] Label name Label name 10 Display screen group 11 First display unit 12 Second display 121 Sub-screen

[0031] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0033] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0034] In addition, the terms "first," "second," and so on, used in this disclosure are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referenced. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this disclosure, "plurality" means at least two, such as two or three, unless otherwise specifically defined.

[0035] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0036] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0037] The present invention provides a segmented display screen, please refer to Figure 1 The segmented display screen includes a display screen group 10, a processing module and a control module. The display screen group 10 includes a first display part 11 and two second display parts 12, and the two second display parts 12 are respectively arranged on the opposite sides of the first display part 11; the second display part 12 has a plurality of sub-screens 121, and the plurality of sub-screens 121 are connected in sequence along the direction away from the first display part 11; the processing module is used to obtain a display area and divide the display area into n sub-fields of view; the control module is used to allocate the n sub-fields of view to the first display part 11 and the plurality of sub-screens 121 for display, so as to form a full-field-of-view image on the display screen group 10.

[0038] The display screen assembly 10 can be integrally formed, forming a lens. The first display portion 11 and the second display portion 12 are angled with each other, thereby forming a concave display surface, such as an arched one, on the display screen assembly 10. The back surface of the display screen assembly 10 can be curved or have other suitable positioning shapes to facilitate the securement of the display screen assembly 10.

[0039] In normal assembly, the second display unit 12 is provided on each of the upper and lower sides of the first display unit 11. The plurality of sub-screens 121 on the second display unit 12 are connected in sequence in the vertical direction.

[0040] In the second display unit 12 located at the top, the edge of the sub-screen 121 at the bottom is connected to the top of the first display unit 11; in the second display unit 12 located at the bottom, the edge of the sub-screen 121 at the top is connected to the bottom of the first display unit 11.

[0041] A smooth transition is used between any two adjacent sub-screens 121, and a smooth transition is also used between the first display unit 11 and the two upper and lower adjacent sub-screens 121, thereby ensuring the continuity and integrity of the image when the user uses the screen and preventing bending marks from appearing on the screen.

[0042] In this embodiment, the first display portion 11 adopts a flat lens, and the multiple sub-screens 121 on the second display portion 12 adopt a curved screen structure.

[0043] The processing module can be a processor, etc., which is electrically connected to the display screen group 10 to obtain the display area (AA area) of the display screen group 10, so as to divide the display area into n sub-fields of view. For example, from the boundary to the center of the display screen group 10, there are 1 field of view, 0.9 field of view, 0.8 field of view, 0.7 field of view... 0.4 field of view, 0.3 field of view, wherein the 0.3 field of view is the first display unit 11, that is, the screen located in the center area of ​​the display screen group 10. It should be noted that multiple sub-fields of view can also be displayed simultaneously on the first display unit 11 and / or the sub-screen 121. For example, from the boundary to the center of the display screen group 10, there are 1 field of view, 0.8 field of view, 0.6 field of view, 0.4 field of view, 0.3 field of view, and similarly, the 0.3 field of view is the screen of the first display unit 11.

[0044] The control module can be a control circuit, which displays each equally divided sub-field of view on its corresponding screen area segment, that is, the corresponding sub-screen 121 or the first display unit 11, through the control instructions of the processing module. For example, when an image information needs to be displayed, the image information is divided into n data packets from top to bottom, and the data packets may include the pixels, number of rows and columns of the image information. Among them, the data packet at the top of the image information is sent to the sub-screen 121 at the top, so that what is displayed on the sub-screen 121 is the top sub-field of view in the image information. And so on from top to bottom, so that finally a full-field-of-view image is formed on the entire display screen group 10.

[0045] It should be noted that the direction in which the display area is divided equally can be adjusted according to the assembly direction of the display screen group 10. For example, when the two second display units 12 are respectively arranged on the left and right sides of the first display unit 11, they can be divided into n sub-fields of view from left to right or from right to left according to the horizontal direction.

[0046] Specifically, in this embodiment, the display area is divided into 20 sub-fields of view, that is, n=20, and the second display unit 12 has seven consecutive sub-screens 121. Correspondingly, when displaying, each sub-screen 121 displays one sub-field of view in sequence, and the first display unit 11 displays six sub-fields of view, thereby finally forming a full-field image on the display screen group 10.

[0047] In the above process, each sub-screen 121 can be a plane lens. When it is a plane lens, there can be an angle between two adjacent sub-screens 121. The size of the angle can be adjusted according to the product model to adapt to the different distances between the display screen group 10 and the user's eyes of different models. The sub-screen 121 can also be a curved screen. When it is a curved screen, the curvature of each sub-screen 121 is different, and the curvature of the sub-screen 121 can be positive or negative, that is, the sub-screen 121 can be concave or convex toward the display surface side, as in this embodiment. Figure 1 The middle part is set in a concave manner, which is more in line with the imaging characteristics and usage requirements of virtual reality products.

[0048] The technical solution of the present invention divides the second display unit 12 on both sides of the first display unit 11 into multiple continuous sub-screens 121. This splits the display area into multiple sub-fields of view, with each sub-screen 121 independently displaying a portion of the sub-field of view. This creates a full-field imaging effect across the entire display screen assembly 10. This effectively utilizes pixels in the edge fields of view to increase the user's observable image area and visual clarity.

[0049] At the same time, while improving display quality, the difficulty and requirements of image pre-correction algorithms are reduced, saving computing power. This saved computing power can be used for functions such as real-time facial tracking and eye gaze tracking, providing a path for the versatility of future VR products. This will further improve the output image quality of head-mounted VR products, making the optical effects of head-mounted VR products more realistic.

[0050] Furthermore, the point where the radius of curvature of the sub-screen 121 intersects the optical axis of the first display unit 11 is the center of curvature of the corresponding sub-screen 121; the center of curvature corresponding to each sub-screen 121 is located on the same side of the first display unit 11, wherein, in the direction away from the first display unit 11, the distance between the center of curvature corresponding to the sub-screen 121 and the first display unit 11 gradually increases.

[0051] When setting the sub-screen 121 , ensure that the curvature radius of the sub-screen 121 intersects with the optical axis of the first display portion 11 , and the intersection point is the curvature center of the sub-screen 121 .

[0052] In this embodiment, the display screen group 10 has a symmetrical structure, that is, the optical axis of the first display portion 11 is also the optical axis of the display screen group 10. The curvature, curvature radius and other parameters of the corresponding sub-screens 121 on the upper and lower second display portions 12 are also the same.

[0053] The curvature radius can be set within the range of 15mm to 150mm. Figure 3 The sub-screen 121 closest to the first display portion 11 is the first sub-screen 121, the sub-screen 121 adjacent to the first sub-screen 121 is the second sub-screen 121, and so on. The sub-screen 121 farthest from the first display portion 11 is the seventh sub-screen 121. The curvature radius of the first sub-screen 121 is set to 45 mm, and the corresponding distance between the center of curvature and the first display portion 11 is 44.12 mm; the curvature radius of the second sub-screen 121 is set to 54.7 mm, the curvature radius of the third sub-screen 121 is set to 64.37 mm, the curvature radius of the fourth sub-screen 121 is set to 74.01 mm, the curvature radius of the fifth sub-screen 121 is set to 83.65 mm, the curvature radius of the sixth sub-screen 121 is set to 93.27 mm, and the curvature radius of the seventh sub-screen 121 is set to 102.88 mm.

[0054] It should be noted that in the above process, any two adjacent centers of curvature are spaced apart by a preset spacing. The preset spacing is 5 mm to 50 mm. In this embodiment, the preset spacing is set to 10 mm, that is, the spacing from the center of curvature corresponding to the first sub-screen 121 to the first display portion 11 is 44.12 mm; the spacing from the center of curvature corresponding to the second sub-screen 121 to the first display portion 11 is 54.12 mm; the spacing from the center of curvature corresponding to the third sub-screen 121 to the first display portion 11 is 64.12 mm, and so on.

[0055] In addition, the width of the first display portion 11 can be set to 17.75 mm, and the thickness of the first display portion 11 is 1.5 mm; when the back surface of the second display portion 12 adopts a curved surface structure, the curvature radius of the back surface is 105.62 mm.

[0056] Through the above-mentioned setting method, it is ensured that when the user uses the VR device, the image information is transmitted to the user's eyes through the display screen group 10 to avoid the influence of refraction, avoid the increase of distortion, obvious chromatic aberration of the edge of the line of sight, etc., which affect the imaging quality and increase the difficulty of distortion pre-correction.

[0057] Furthermore, along the optical axis direction of the first display portion, a width ratio of the projection of the sub-screen 121 to the projection of the display screen group 10 is 1:n.

[0058] In this embodiment, the display screen group 10 is divided into 20 sub-fields. Therefore, when setting the sub-screen 121, the display screen group 10 is projected along the optical axis direction of the first display part 11, please refer to Figure 4 , it is necessary to ensure that the width a of the projection of the sub-screen 121 is 1 / 20 of the width b of the projection of the display screen group 10.

[0059] Furthermore, to address the aforementioned issues, the present invention further proposes a VR device employing the aforementioned segmented display screen. The VR device may be a head-mounted VR device such as VR glasses. When a user wears the VR glasses, the virtual image distance should be greater than or equal to 500 mm to ensure the display effect of the segmented display screen.

[0060] Specifically, the display screen assembly 10 can be integrally formed, forming a lens. The first display portion 11 and the second display portion 12 are angled with each other, thereby forming a concave display surface, such as an arched one, on the display screen assembly 10. The back surface of the display screen assembly 10 can be curved or have other suitable positioning shapes to facilitate securement of the display screen assembly 10.

[0061] In normal assembly, the second display unit 12 is provided on each of the upper and lower sides of the first display unit 11. The plurality of sub-screens 121 on the second display unit 12 are connected in sequence in the vertical direction.

[0062] In the second display unit 12 located at the top, the edge of the sub-screen 121 at the bottom is connected to the top of the first display unit 11; in the second display unit 12 located at the bottom, the edge of the sub-screen 121 at the top is connected to the bottom of the first display unit 11.

[0063] A smooth transition is used between any two adjacent sub-screens 121, and a smooth transition is also used between the first display unit 11 and the two upper and lower adjacent sub-screens 121, thereby ensuring the continuity and integrity of the image when the user uses the screen and preventing bending marks from appearing on the screen.

[0064] In this embodiment, the first display portion 11 adopts a flat lens, and the multiple sub-screens 121 on the second display portion 12 adopt a curved screen structure.

[0065] The processing module can be a processor, etc., which is electrically connected to the display screen group 10 to obtain the display area (AA area) of the display screen group 10, so as to divide the display area into n sub-fields of view. For example, from the boundary to the center of the display screen group 10, there are 1 field of view, 0.9 field of view, 0.8 field of view, 0.7 field of view... 0.4 field of view, 0.3 field of view, wherein the 0.3 field of view is the first display unit 11, that is, the screen located in the center area of ​​the display screen group 10. It should be noted that multiple sub-fields of view can also be displayed simultaneously on the first display unit 11 and / or the sub-screen 121. For example, from the boundary to the center of the display screen group 10, there are 1 field of view, 0.8 field of view, 0.6 field of view, 0.4 field of view, 0.3 field of view, and similarly, the 0.3 field of view is the screen of the first display unit 11.

[0066] The control module can be a control circuit, which displays each equally divided sub-field of view on its corresponding screen area segment, that is, the corresponding sub-screen 121 or the first display unit 11, through the control instructions of the processing module. For example, when an image information needs to be displayed, the image information is divided into n data packets from top to bottom, and the data packets may include the pixels, number of rows and columns of the image information. Among them, the data packet at the top of the image information is sent to the sub-screen 121 at the top, so that what is displayed on the sub-screen 121 is the top sub-field of view in the image information. And so on from top to bottom, so that finally a full-field-of-view image is formed on the entire display screen group 10.

[0067] It should be noted that the direction in which the display area is divided equally can be adjusted according to the assembly direction of the display screen group 10. For example, when the two second display units 12 are respectively arranged on the left and right sides of the first display unit 11, they can be divided into n sub-fields of view from left to right or from right to left according to the horizontal direction.

[0068] Specifically, in this embodiment, the display area is divided into 20 sub-fields of view, that is, n=20, and the second display unit 12 has seven consecutive sub-screens 121. Correspondingly, when displaying, each sub-screen 121 displays one sub-field of view in sequence, and the first display unit 11 displays six sub-fields of view, thereby finally forming a full-field image on the display screen group 10.

[0069] In the above process, each sub-screen 121 can be a plane lens. When it is a plane lens, there can be an angle between two adjacent sub-screens 121. The size of the angle can be adjusted according to the product model to adapt to the different distances between the display screen group 10 and the user's eyes of different models. The sub-screen 121 can also be a curved screen. When it is a curved screen, the curvature of each sub-screen 121 is different, and the curvature of the sub-screen 121 can be positive or negative, that is, the sub-screen 121 can be concave or convex toward the display surface side, as in this embodiment. Figure 1 The middle part is set in a concave manner, which is more in line with the imaging characteristics and usage requirements of virtual reality products.

[0070] The technical solution of the present invention divides the second display unit 12 on both sides of the first display unit 11 into multiple continuous sub-screens 121. This splits the display area into multiple sub-fields of view, with each sub-screen 121 independently displaying a portion of the sub-field of view. This creates a full-field imaging effect across the entire display screen assembly 10. This effectively utilizes pixels in the edge fields of view to increase the user's observable image area and visual clarity.

[0071] At the same time, while improving display quality, the difficulty and requirements of image pre-correction algorithms are reduced, saving computing power. This saved computing power can be used for functions such as real-time facial tracking and eye gaze tracking, providing a path for the versatility of future VR products. This will further improve the output image quality of head-mounted VR products, making the optical effects of head-mounted VR products more realistic.

[0072] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A segmented display screen, characterized in that: The segmented display screen comprises: A display screen group, the display screen group including a first display portion and two second display portions, the two second display portions being respectively arranged on opposite sides of the first display portion; image information being equally divided into n data packets, each data packet including the number of pixels, rows and columns of the image information; The second display portion has a plurality of sub-screens, and the plurality of sub-screens are sequentially connected in a direction away from the first display portion; a processing module, the processing module being configured to acquire a display area and divide the display area into n sub-fields of view; a control module, configured to allocate the n sub-fields of view to the first display portion and the plurality of sub-screens for display, so as to form a full-field image on the display screen group; The second display portion has seven sub-screens connected in sequence; The processing module is further used to divide the display area into twenty sub-viewing fields; the data packet is used to be sent to the sub-screen; The control module is further configured to control each of the sub-screens to display one sub-field of view, and to control the first display portion to display six sub-fields of view.

2. The segmented display screen according to claim 1, wherein: The point where the curvature radius of the sub-screen intersects the optical axis of the first display portion is the curvature center of the corresponding sub-screen; The center of curvature corresponding to each sub-screen is located on the same side of the first display portion, wherein the distance between the center of curvature corresponding to the sub-screen and the first display portion gradually increases in a direction away from the first display portion.

3. The segmented display screen according to claim 2, wherein: The curvature radius is 15 mm to 150 mm.

4. The segmented display screen according to claim 2, wherein: Any two adjacent centers of curvature are spaced apart by a preset distance.

5. The segmented display screen according to claim 4, characterized in that: The preset spacing is 5 mm to 50 mm.

6. The segmented display screen according to claim 1, wherein: Along the optical axis direction of the first display portion, a width ratio of the projection of the sub-screen to the projection of the display screen group is 1:n.

7. The segmented display screen according to any one of claims 1 to 6, characterized in that: The display screen group is symmetrically arranged along the optical axis of the first display part.

8. The segmented display screen according to any one of claims 1 to 6, characterized in that: There is a smooth transition between the two adjacent sub-screens, and there is a smooth transition between the first display portion and the adjacent sub-screen.

9. A VR device, characterized in that: The VR device is applied with a segmented display screen as described in any one of claims 1 to 8.

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