Display module and VR device

Abstract

The embodiment of the invention provides a display module and VR equipment. The display module comprises a display panel and a circuit board, the display panel is electrically connected with the circuit board, and the display panel is used for emitting light with image information; the at least one camera is electrically connected with the circuit board, the camera is located on the periphery of an effective display area of the display panel, and the camera is used for shooting an image of an eyeball area of a human eye to realize eyeball tracking; the light source set is electrically connected with the circuit board, the light source set is arranged on the periphery of the effective display area of the display panel in a surrounding mode, and the light source set is used for projecting light to irradiate the eye ball area of the human eye.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of wearable devices. More specifically, the embodiments of the present application relate to a display module and a VR device. Background Art

[0002] VR devices with eye tracking function include cameras for tracking eyes and infrared LED lights for projecting infrared light. Currently, cameras and infrared LED lights are mounted on separate flexible printed circuits (FPCs) through surface mount technology (SMT). Subsequently, each FPC is assembled inside or outside the LCD housing.

[0003] However, there are many accumulated tolerance factors in this process, including the manufacturing accuracy of the FPC itself, the accuracy of the shell support surface, and the assembly accuracy of each FPC assembly process, which places extremely high demands on the accuracy of the entire assembly process.

[0004] In view of this, it is necessary to provide a new technical solution to solve the above technical problems. Summary of the invention

[0005] The purpose of this application is to provide a new technical solution for display module and VR equipment.

[0006] In a first aspect, an embodiment of the present application provides a display module. The display module includes: a display panel and a circuit board, the display panel is electrically connected to the circuit board, and the display panel is used to emit light with image information;

[0007] At least one camera, the camera is electrically connected to the circuit board, the camera is located at the periphery of the effective display area of ​​the display panel, and the camera is used to capture an image of the eyeball area of ​​a human eye to realize eye tracking;

[0008] A light source group is electrically connected to the circuit board, the light source group is arranged around the periphery of the effective display area of ​​the display panel, and the light source group is used to project light to illuminate the eyeball area of ​​the human eye.

[0009] Optionally, the display module includes at least two cameras, and at least two of the cameras capture images of the same eye area at the same time.

[0010] Optionally, the display module includes a first camera and a second camera, and the first camera and the second camera are located on both sides of an effective display area of ​​the display panel.

[0011] Optionally, the first camera and the second camera are asymmetrically arranged at the periphery of the effective display area of ​​the display panel.

[0012] Optionally, the angle between the optical axis of the camera and the plane where the display panel is located ranges from 24° to 35°.

[0013] Optionally, the distance between the center of the camera lens and the center of the display panel ranges from 20 mm to 25 mm.

[0014] Optionally, the display panel is integrated with a first camera and a second camera, and the angle between the first camera and the second camera is in the range of 110° to 150°;

[0015] Among them, the angle between the line connecting the lens center of the first camera and the center of the display panel and the line connecting the lens center of the second camera and the center of the display panel is the angle between the two cameras.

[0016] Optionally, the light source group includes a plurality of light sources, and the plurality of light sources are asymmetrically integrated at the periphery of the effective display area of ​​the display panel.

[0017] Optionally, the angle between the optical axis of each light source in the light source group and the plane where the display panel is located ranges from 25° to 30°.

[0018] Optionally, the distance between the center of each light source in the light source group and the center of the display panel ranges from 20 mm to 25 mm.

[0019] Optionally, the light source group includes a first light source and a second light source located on both sides of the camera.

[0020] Optionally, the first light source and the second light source are asymmetrically arranged on both sides of the camera.

[0021] Optionally, the first light source, the camera and the second light source are arranged in sequence in a counterclockwise direction, the angle between the first light source and the camera is a first angle, the angle between the camera and the second light source is a second angle, and the ratio of the first angle to the second angle is: 1:2 to 1:3;

[0022] The angle between the line connecting the center of the light source and the center of the display panel and the line connecting the center of the camera lens and the center of the display panel is the angle between the light source and the camera.

[0023] Optionally, the angle between the first light source and the second light source ranges from 70° to 90°;

[0024] The angle between the line connecting the center of the first light source and the center of the display panel and the line connecting the center of the second light source and the center of the display panel is the angle between the two light sources.

[0025] Optionally, the light source group further includes a plurality of third light sources arranged non-adjacent to the camera, and the angle range between two adjacent third light sources is: 20° to 35°;

[0026] The angle between a line connecting the center of one third light source and the center of the display panel and a line connecting another third light source and the center of the display panel is the angle between the two third light sources.

[0027] In a second aspect, an embodiment of the present application further provides a VR device, wherein the VR device comprises an optical module and the display module as described in the first aspect, and the light emitted by the display panel is projected to human eyes through the optical module.

[0028] According to the embodiment of the present application, the display panel, the eye tracking camera and the light projection light source group are integrated into one. Specifically, the camera and the light source group are arranged in the non-display area of ​​the display panel, which simplifies the assembly process of the VR device. During the assembly process, only the composite display module integrating the display panel, the camera and the light source group needs to be installed into the display housing, which not only significantly reduces the technical difficulty of assembly, but also greatly improves the accuracy of installation.

[0029] Other features and advantages of the present specification will become apparent from the following detailed description of exemplary embodiments of the present specification with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the specification and, together with the description, serve to explain the principles of the specification.

[0031] Figure 1 Shown is a structural diagram of a display module provided in an embodiment of the present application.

[0032] Figure 2 Shown is a partial structural diagram of a VR device provided in an embodiment of the present application.

[0033] Description of reference numerals:

[0034] 1. Display module; 10. Display panel; 101. Effective display area; 102. Non-display area; 11. Camera; 111. First camera; 112. Second camera; 12. Light source group; 121. First light source; 122. Second light source; 123. Third light source;

[0035] 2. Display housing; 3. Optical module; 4. Lens housing. DETAILED DESCRIPTION

[0036] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0037] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present application, its application, or uses.

[0038] Techniques and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the techniques and equipment should be considered part of the specification.

[0039] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0040] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0041] The embodiment of the present application provides a display module 1, and the display module 1 is applied to a VR device. Figure 1 and Figure 2 The display module 1 includes: a display panel 10 and a circuit board, the display panel 10 is electrically connected to the circuit board, and the display panel 10 is used to emit light with image information.

[0042] At least one camera 11 is electrically connected to the circuit board, and the camera 11 is located at the periphery of the effective display area 101 of the display panel 10. The camera 11 is used to capture an image of the eye area of ​​a human eye to achieve eye tracking.

[0043] The light source group 12 is electrically connected to the circuit board and is disposed around the outer periphery of the effective display area 101 of the display panel 10 . The light source group 12 is used to project light onto the eyeball area of ​​a human eye.

[0044] In the embodiment of the present application, the display module 1 mainly includes a display panel 10, a circuit board, at least one camera 11 and a light source group 12. The display panel 10, at least one camera 11 and the light source group 12 are electrically connected to the same circuit board. In this way, the circuit board is not only electrically connected to the display panel 10, but is also responsible for signal transmission and data exchange with other functional components (such as the camera 11 and the light source group 12), ensuring that the entire display module 1 can work in coordination with other components in the VR device.

[0045] Exemplarily, the circuit board may be a flexible circuit board.

[0046] The main function of the display panel 10 is to emit light carrying image information, which constitutes the virtual image seen by the user. Specifically, the display panel 10 is divided into an effective display area 101 and a non-display area 102. The non-display area 102 is usually arranged around the effective display area 101. The effective display area 101 is used to display images in a virtual environment. The non-display area 102 can be used to set the camera 11 and the light source group 12.

[0047] Exemplarily, the camera 11 is located at the periphery of the effective display area 101 of the display panel 10, and the camera 11 can be set in the non-display area 102 of the display panel 10. Or when the display panel 10 also includes a display bracket supporting it, the camera 11 can also be set on the display bracket.

[0048] Exemplarily, the light source group 12 is located at the periphery of the effective display area 101 of the display panel 10, and the light source group 12 can be set in the non-display area 102 of the display panel 10. Or when the display panel 10 also includes a display bracket supporting it, the light source group 12 can also be set on the display bracket.

[0049] In the embodiment of the present application, the display module 1 integrates the camera 11 , the light source group 12 and the display panel 10 into one, and the camera 11 and the light source group 12 are respectively arranged outside the edge of the effective display area 101 of the display panel 10 .

[0050] Integrating the camera 11 and the light source group 12 in the display module 1 avoids separately arranging a circuit board with a separate camera 11 and a circuit board with a separate light source group 12 inside or outside the display housing 2, thereby reducing the difficulty of assembling the VR device and improving the assembly accuracy of the VR device.

[0051] The display module 1 includes at least one camera 11, which is used to capture images of the eyeball area of ​​a human eye. The number of cameras 11 in the display module 1 is determined according to the integrity of the images of the eyeball area of ​​a human eye captured by the camera 11.

[0052] The light source group 12 includes a plurality of light sources, which are arranged around the periphery of the effective display area 101 of the display panel 10. The light source group 12 is used to form light spots on the eyeballs, and the number of light spots corresponds to the number of light sources. In order to enable the camera 11 to achieve eye tracking more accurately, the plurality of light spots basically cover the eyeballs of the human eye, and the camera 11 is used to capture an image of the eyeball area, and the image includes the light spots. Exemplarily, the light source in the light source group 12 is an infrared LED light source.

[0053] Exemplarily, when one camera 11 is capable of capturing most images of the eyeball region of a human eye (the camera 11 is capable of capturing most number of light spots), one camera 11 may be integrated on the display panel 10 .

[0054] Exemplarily, if the image of the eyeball area of ​​a human eye captured by one camera 11 is less complete (the image of the central area is missing), two cameras 11 or more cameras 11 may be used to capture the image of the same eyeball area.

[0055] In the embodiment of the present application, the camera 11, the light source group 12 and the display panel 10 can be integrated into one according to the architecture of the optical module 3 in the VR device and the light transmission path in the optical module 3, which does not affect the display effect of the display panel 10 on the one hand, and does not affect the light source group 12 projecting light to the human eye area on the other hand, and the camera 11 tracks the user's line of sight in real time according to the light projected by the light source group 12 to the human eye area. In other words, the camera 11 and the light source group 12 can be integrated into the appropriate position of the display panel 10 according to the architecture type of the optical module 3.

[0056] In addition, the position of the light source group 12 integrated into the display panel 10 can be determined according to the angle and distance at which the light source group 12 is set on the display panel 10. And the position of the camera 11 integrated into the display panel 10 can be determined according to the angle and distance at which the camera 11 is set on the display panel 10.

[0057] In the embodiment of the present application, the display panel 10, the eye tracking camera 11 and the light projection light source group 12 are integrated into one. Specifically, the camera 11 and the light source group 12 are arranged in the non-display area 102 of the display panel 10, which simplifies the assembly process of the VR device. During the assembly process, it is only necessary to install the composite display module 1 integrating the display panel 10, the camera 11 and the light source group 12 into the display housing 2, which not only significantly reduces the technical difficulty of assembly, but also greatly improves the accuracy of installation.

[0058] Compared with the prior art, this application abandons the traditional practice of separately installing a display screen containing only a display panel 10, a circuit board equipped with a camera 11, and a circuit board equipped with a light source on a display housing 2. This application improves the structure of the display module 1, which not only effectively simplifies the assembly steps of the display module 1, but also reduces the potential factors affecting the overall assembly accuracy of the VR device by reducing the assembly parts and corresponding assembly links, thereby ensuring a higher installation accuracy of the display module 1. In short, this application significantly optimizes the production efficiency and the accuracy performance of the final product by reducing the assembly complexity of the VR device.

[0059] In the exemplary embodiment of the present application, refer to Figure 1 and Figure 2 The display module 1 includes at least two cameras 11, and at least two of the cameras 11 capture images of the same eyeball area at the same time.

[0060] In this embodiment, by simultaneously acquiring multiple perspective images of the eyeball by at least two cameras 11, the VR device can more accurately identify the movement trajectory and position of the eyeball, thereby achieving real-time tracking of the user's line of sight. For example, by limiting the shooting angles and positions of the two cameras 11 in the virtual reality device, the purpose of shooting the area where the same eyeball is located can be achieved.

[0061] In a specific embodiment, referring to Figure 1 and Figure 2 The display module 1 includes two cameras 11 , and the two cameras 11 include a first camera 111 and a second camera 112 . The first camera 111 and the second camera 112 are located at two sides of the effective display area 101 of the display panel 10 .

[0062] In this embodiment, in order to further ensure the accuracy of eye tracking, two cameras 11 are integrated in the display panel 10, and the two cameras 11 include a first camera 111 and a second camera 112. The first camera 111 and the second camera 112 can be symmetrically arranged on both sides of the effective display area 101 of the display panel 10, or the first camera 111 and the second camera 112 can be asymmetrically arranged on both sides of the effective display area 101 of the display panel 10. The arrangement of the first camera 111 and the second camera 112 is mainly related to the arrangement angle and the arrangement distance of each camera 11.

[0063] In the case where two cameras 11 are integrated on the display panel 10, Figure 1 and Figure 2 Preferably, the first camera 111 and the second camera 112 are asymmetrically arranged at the periphery of the effective display area 101 of the display panel 10 .

[0064] In this embodiment, the two asymmetrically arranged cameras 11 can cover a wider range of viewing angles, thereby capturing the eye's movement trajectory more comprehensively, which helps to reduce blind spots and improve the accuracy and completeness of tracking.

[0065] In addition, stereoscopic tracking can be achieved by the coordinated work of the two cameras 11, that is, the movement of the eyeball in the horizontal and vertical directions can be captured simultaneously. This stereoscopic tracking method can more accurately locate the position and movement direction of the eyeball, and improve the accuracy and stability of tracking.

[0066] In a specific example, the angle range between the optical axis of the camera 11 and the plane where the display panel 10 is located is: 24°~35°. Within this angle range, the camera 11 can better capture the movement trajectory of the eyeball. Since eye tracking requires high-precision positioning, a proper angle helps to reduce errors and improve tracking accuracy. The angle range of 24°~35° can ensure that when the camera 11 tracks the eyeball, the tracking will not fail or the error will not increase due to an angle that is too large or too small.

[0067] In this example, the spatial angle at which the camera 11 is set on the display panel 10 is limited. The spatial angle is the angle between the optical axis of the camera 11 and the plane where the display panel 10 is located. This angle is mainly determined by the fixed angle (kappa angle) between the optical axis of the human eye and the visual axis, the focal length, viewing angle and resolution of the camera 11, and the light transmission characteristics of the optical module 3 in the VR device. According to the difference in the angle between the optical axis and the visual axis of the eye of different wearers, the selection of different types of cameras 11 and the difference in the architecture of the optical module 3, the camera 11 is installed at an appropriate angle within the angle range: 24° to 35°, and the camera 11 can accurately achieve eye tracking.

[0068] In addition, when the camera 11 is integrated on the display panel 10, ensuring that the camera 11 is accurately positioned at the predetermined position of the display panel 10 is crucial to maintaining the assembly accuracy of the entire display module 1. This process can be achieved by accurately setting and controlling the angle and distance parameters of the camera 11, and these parameters can be verified and calibrated with the help of professional testing equipment. This approach can more effectively ensure the positioning accuracy of the camera 11 on the display panel 10.

[0069] In a further example, when the spatial angle at which the camera 11 is installed on the display panel 10 is determined, the distance between the lens center of the camera 11 and the center O of the display panel 10 can be limited, which can further ensure that the camera 11 can achieve eye tracking more accurately.

[0070] The distance between the center of the lens of the camera 11 and the center of the display panel 10 is mainly related to the size of the display panel 10. Considering the common sizes of the display panel 10 in VR devices, such as 1.3 inches, 3.5 inches or 4.5 inches, in order to optimize the user's visual experience and eye tracking effect, the distance between the center of the lens of the camera 11 and the center O of the display panel 10 is usually limited to between 20 mm and 30 mm.

[0071] In a further embodiment, the angle α between the first camera 111 and the second camera 112 ranges from 110° to 150°;

[0072] The angle between the line connecting the center of the lens of the first camera 111 and the center of the display panel 10 and the line connecting the center of the lens of the second camera 112 and the center of the display panel 10 is the angle between the two cameras 11 .

[0073] In this embodiment, when the spatial angle and setting distance of each camera 11 meet the above conditions, and when the display panel 10 is integrated with the first camera 111 and the second camera 112, the plane angle between the two cameras 11 (the angle within the plane where the display panel 10 is located) is limited, which can improve the tracking accuracy and stability.

[0074] Specifically, the first camera 111 and the second camera 112 are asymmetrically integrated on the display panel 10, and the angle α between the first camera 111 and the second camera 112 is between 110° and 150°, which means that the two cameras 11 can cover a relatively wide viewing angle range. This is crucial for the eye tracking system because it can capture the user's eye movements more comprehensively, reduce blind spots, and improve the accuracy and completeness of tracking.

[0075] In a specific embodiment, the light source group 12 includes a plurality of light sources, and the plurality of light sources are asymmetrically integrated at the periphery of the effective display area 101 of the display panel 10 .

[0076] In this embodiment, when the light source group 12 is integrated into the display panel 10, the light source group 12 projects light to illuminate the human eye. The light source group 12 provides an illumination basis for the camera 11 to track the eyeball.

[0077] The light source group 12 includes a plurality of light sources, which are asymmetrically integrated around the periphery of the display panel 10. The asymmetrically arranged light source group 12 can provide more accurate lighting for different positions and angles of the eyeball, which helps the camera 11 to more accurately capture the outline and details of the eyeball, thereby improving the tracking accuracy.

[0078] In addition, different users may have different facial features and eyeball positions. The asymmetrically arranged light source group 12 can adapt to these differences and provide more suitable lighting conditions for different users.

[0079] In a further embodiment, the angle between the optical axis of each light source in the light source group 12 and the plane where the display panel 10 is located is in the range of 25° to 30°.

[0080] In this embodiment, the spatial angle of each light source is limited, and the angle of the light source needs to adapt to the changes in the position of the eyeball and the direction of sight during the use of the VR device. An angle that is too large or too small may cause insufficient lighting or light interference, affecting the tracking accuracy.

[0081] In addition, different types of light sources (such as LED, laser, etc.) have different luminous properties and beam angles. The selection of the angle needs to take into account the luminous efficiency and beam diffusion of the light source to ensure that the light can be correctly projected onto the eyeball. Therefore, the appropriate spatial angle can be selected according to the type of light source to limit the position of the light source.

[0082] Since the light source group 12 is arranged asymmetrically, it is necessary to define the setting position (setting angle and setting distance) of each light source to ensure that each light source can correctly project light and illuminate the eyeball.

[0083] In this embodiment, by limiting the spatial angle of each light source, it can be ensured that the light projected by the light source can be irradiated onto the eyeball at a suitable angle, thereby providing sufficient illumination intensity and avoiding discomfort or reflection caused by excessive light.

[0084] In addition, when the user uses the VR device, the position of the eyeball may change due to head movement or line of sight adjustment. By setting a reasonable angle range, it can be ensured that the light source group 12 can adapt to these changes and continue to provide stable lighting for the eyeball.

[0085] Furthermore, the distance between the center of each light source in the light source group 12 and the center of the display panel 10 ranges from 20 mm to 35 mm.

[0086] In this embodiment, when the spatial angle at which the light source is integrated into the display panel 10 is determined, the distance between the center of the light source and the center O of the display panel 10 can be further limited, which can further ensure that the light source projects light to the eyeball.

[0087] The distance between the center of the light source and the center of the display panel 10 is mainly related to the size of the display panel 10. Considering the common sizes of the display panel 10 in VR devices, such as 1.3 inches, 3.5 inches or 4.5 inches, in order to optimize the user's visual experience and eye tracking effect, the distance between the center of the light source and the center O of the display panel 10 is usually limited to between 20 mm and 35 mm. The distance between the center of the light source and the center O of the display panel 10 will also be different depending on the position where the light source is integrated in the display panel 10.

[0088] In a specific embodiment, referring to Figure 1 and Figure 2 The light source group 12 includes a first light source 121 and a second light source 122 located on both sides of the camera 11 .

[0089] In this embodiment, the light source group 12 includes a first light source 121 and a second light source 122 , and the first light source 121 and the second light source 122 are located at two sides of the camera 11 .

[0090] Integrating the first light source 121 and the second light source 122 on both sides of the camera 11 can more effectively reduce the shadow area around the eyeball and avoid tracking errors caused by insufficient light. At the same time, they can also reduce the reflection phenomenon on the surface of the eyeball, which helps to improve the clarity of the eyeball image captured by the camera 11. The first light source 121 and the second light source 122 can be symmetrically arranged on both sides of the camera 11, or the first light source 121 and the second light source 122 can be asymmetrically arranged on both sides of the camera 11.

[0091] Further, refer to Figure 1 The first light source 121 and the second light source 122 are asymmetrically arranged on both sides of the camera 11.

[0092] In this embodiment, in combination with the setting angle of the camera 11 (spatial angle and plane angle (angle within the plane where the display panel 10 is located)), the first light source 121 and the second light source 122 are asymmetrically arranged on both sides of the camera 11.

[0093] When using VR devices, the user's eyes will frequently move horizontally and vertically. Asymmetrically arranged light sources can better adapt to this eye movement and ensure stable and sufficient lighting in different sight directions.

[0094] Specifically, the first light source 121, the camera 11 and the second light source 122 are arranged in sequence in a counterclockwise direction, the angle between the first light source 121 and the camera 11 is a first angle, the angle between the camera 11 and the second light source 122 is a second angle, and the ratio of the first angle to the second angle is: 1:2 to 1:3;

[0095] The angle between the line connecting the center of the light source and the center of the display panel 10 and the line connecting the lens center of the camera 11 and the center of the display panel 10 is the angle between the light source and the camera 11 .

[0096] Reference Figure 1 , taking the first light source 121 and the second light source 122 disposed on both sides of the first camera 111 as an example for explanation:

[0097] The light source located on the left side of the first camera 111 is the first light source 121 , and the light source located on the right side of the first camera 111 is the second light source 122 . The first light source 121 , the first camera 111 , and the second light source 122 are arranged in a counterclockwise order.

[0098] The angle between the first light source 121 and the first camera 111 is a plane angle, the angle between the second light source 122 and the first camera 111 is a plane angle, the angle between the first light source 121 and the first camera 111 is β1, and the angle between the second light source 122 and the first camera 111 is β2, wherein the ratio of β1 to β2 is: 1:2 to 1:3. By reasonably setting the angles of β1 and β2, the reflection and scattering of light on the surface of the eyeball can be reduced, thereby reducing reflection and glare. This helps the camera 11 capture the image of the eyeball more clearly and improves tracking accuracy. In addition, the setting of the angle can also ensure that the light forms a more uniform and extensive lighting distribution around the eyeball, so that the camera 11 can more accurately capture the movement trajectory of the eyeball.

[0099] Further, refer to Figure 1 , the angle between the first light source 121 and the second light source 122 is in the range of 70° to 90°;

[0100] The angle between the line connecting the center of the first light source 121 and the center of the display panel 10 and the line connecting the center of the second light source 122 and the center of the display panel 10 is the angle between the two light sources.

[0101] In this embodiment, the plane angle (the angle within the plane where the display panel 10 is located) between the first light source 121 and the second light source 122 located on both sides of the same camera 11 is limited, wherein the plane angle range between the first light source 121 and the second light source 122 is: 70° to 90°.

[0102] Setting the plane angle between the first light source 121 and the second light source 122 within the range of 70° to 90° can ensure that the light forms a more uniform and extensive illumination distribution around the eyeball, which helps the camera 11 to capture the image of the eyeball more clearly and improves the tracking accuracy.

[0103] In addition, considering the frequent eye movements of users when using VR devices, the angle range of 70° to 90° can ensure that the light source can provide stable lighting effects in different sight directions.

[0104] In the embodiment of the present application, the flat angle between the first light source 121 and the second light source 122 is in the range of 70° to 90°, and the plane angle between the first light source 121 and the camera 11 disposed adjacent thereto (the angle in the plane where the display panel 10 is located) is in the range of 23° to 30°. The plane angle between the second light source 122 and the camera 11 disposed adjacent thereto can be in the range of 46° to 69°.

[0105] In a specific embodiment, the light source group 12 further includes a plurality of third light sources 123 that are not adjacent to the camera 11, and the angle range between two adjacent third light sources 123 is: 20° to 35°;

[0106] The angle between the line connecting the center of one third light source 123 and the center of the display panel 10 and the line connecting another third light source 123 and the center of the display panel 10 is the angle between the two third light sources 123 .

[0107] Reference Figure 1 , the light source group 12 includes eight light sources, and the light source group 12 includes four third light sources 123 that are not adjacent to the camera 11. That is, referring to Figure 2 The light source group 12 includes four third light sources 123 that are arranged non-adjacent to the first camera 111 and non-adjacent to the second camera 112 .

[0108] For example, three third light sources 123 are provided in the first light source 121 disposed adjacent to the first camera 111 and the second light source 122 disposed adjacent to the second camera 112. Among the three third light sources 123, the plane angle (the angle in the plane where the display panel 10 is located) formed by two adjacent third light sources 123 is γ3, and the angle range of γ3 is 20° to 35°. The addition of three third light sources 123 can further enhance the lighting effect of the eye tracking area, so that the camera 11 can capture the image of the eye more clearly. By reasonably setting the plane angle γ3 between two adjacent third light sources 123, the distribution of light in the eye tracking area can be optimized, the light blind area can be reduced, and the tracking accuracy can be improved.

[0109] Among the three third light sources 123, the plane angle formed between one of the third light sources 123 and the first light source 121 disposed adjacent thereto is γ11, and the plane angle formed between another of the three third light sources 123 and the second light source 122 disposed adjacent thereto is γ21. The angle of γ21 may be approximately equal to the angle of γ3. The angle of γ11 may be approximately twice the angle of γ21.

[0110] In an alternative embodiment, referring to Figure 1 A third light source 123 may also be disposed between the second light source 122 disposed adjacent to the first camera 111 and the first light source 121 disposed adjacent to the second camera 112 .

[0111] The straight angle formed between the third light source 123 located between the first light source 121 and the second light source 122 and the adjacent first light source 121 is γ1, and the angle of γ1 is smaller than the angle of γ11. And the straight angle formed between the third light source 123 located between the first light source 121 and the second light source 122 and the adjacent second light source 122 is γ2, and the angle of γ2 is smaller than the angle of γ21. After such setting, the density of light sources set between the first camera 111 and the second camera 112 is relatively large, and the brightness provided by the light source group 12 is relatively high, which is conducive to the high-precision image capture required for eye tracking, so as to accurately identify and analyze the movement of the eyeball.

[0112] The embodiment of the present application further provides a VR device, which includes an optical module 3 and the display module 1 as described above, wherein the light emitted by the display panel 10 is projected to human eyes through the optical module 3 .

[0113] In this embodiment, a VR device is provided, and the VR device may be a VR head mounted display or VR glasses, etc. The VR device includes the above-mentioned display module 1, which reduces the difficulty of assembling the VR device and improves the assembly accuracy of the VR device.

[0114] In a specific embodiment, the assembly process of the VR device may be:

[0115] 1) Assemble the optical module 3 to the lens housing 4 (the positioning method of the optical module 3 and the lens housing 4 is not limited, such as AA or optical guide or XYZ reference support, etc.), and fix and seal them with glue;

[0116] 2) bonding and sealing the lens housing 4 and the display housing 2 by glue;

[0117] 3) Assemble the display module 1 integrated with the camera 11, the light source group 12 and the display panel 10 to the display housing 2. For example, the display module 1 can be fixed to the display housing 2 by using reworkable glue or easy-to-pull adhesive.

[0118] Assembling the VR device through the above-mentioned assembly method reduces the difficulty of assembling the VR device and improves the assembly accuracy of the VR device.

[0119] The above embodiments focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0120] Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are only for illustration, not for limiting the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A display module, characterized in that: include: A display panel (10) and a circuit board, the display panel (10) being electrically connected to the circuit board, and the display panel (10) being used to emit light with image information; at least one camera (11), the camera (11) being electrically connected to the circuit board, the camera (11) being located at the periphery of the effective display area (101) of the display panel (10), and the camera (11) being used to capture an image of an eyeball area of ​​a human eye to achieve eye tracking; A light source group (12), the light source group (12) being electrically connected to the circuit board, the light source group (12) being arranged around the periphery of the effective display area (101) of the display panel (10), and the light source group (12) being used to project light onto the eyeball area of ​​a human eye.

2. The display module according to claim 1, characterized in that: The display module comprises at least two cameras (11), and at least two of the cameras (11) capture images of the same eyeball area at the same time.

3. The display module according to claim 2, characterized in that: The display module comprises a first camera (111) and a second camera (112), wherein the first camera (111) and the second camera (112) are located on both sides of an effective display area (101) of the display panel (10).

4. The display module according to claim 3, characterized in that: The first camera (111) and the second camera (112) are asymmetrically arranged at the periphery of the effective display area (101) of the display panel (10).

5. The display module according to any one of claims 1 to 4, characterized in that: The angle between the optical axis of the camera (11) and the plane where the display panel (10) is located is in the range of 24° to 35°.

6. The display module according to claim 5, characterized in that: The distance between the center of the lens of the camera (11) and the center of the display panel (10) ranges from 20 mm to 25 mm.

7. The display module according to claim 6, characterized in that: The display panel (10) is integrated with a first camera (111) and a second camera (112), and the angle between the first camera (111) and the second camera (112) is in the range of 110° to 150°; The angle between the line connecting the center of the lens of the first camera (111) and the center of the display panel (10) and the line connecting the center of the lens of the second camera (112) and the center of the display panel (10) is the angle between the two cameras (11).

8. The display module according to claim 1, characterized in that: The light source group (12) comprises a plurality of light sources, and the plurality of light sources are asymmetrically integrated on the periphery of the effective display area (101) of the display panel (10).

9. The display module according to claim 8, characterized in that: The angle between the optical axis of each light source in the light source group (12) and the plane where the display panel (10) is located is in the range of 25° to 30°.

10. The display module according to claim 9, characterized in that: The distance between the center of each light source in the light source group (12) and the center of the display panel (10) ranges from 20 mm to 25 mm.

11. The display module according to any one of claims 8 to 10, characterized in that: The light source group (12) comprises a first light source (121) and a second light source (122) located on both sides of the camera (11).

12. The display module according to claim 11, characterized in that: The first light source (121) and the second light source (122) are asymmetrically arranged on two sides of the camera (11).

13. The display module according to claim 12, characterized in that: The first light source (121), the camera (11) and the second light source (122) are arranged in sequence in a counterclockwise direction, the angle between the first light source (121) and the camera (11) is a first angle, the angle between the camera (11) and the second light source (122) is a second angle, and the ratio of the first angle to the second angle is 1:2 to 1:3; The angle between the line connecting the center of the light source and the center of the display panel (10) and the line connecting the center of the lens of the camera (11) and the center of the display panel (10) is the angle between the light source and the camera (11).

14. The display module according to claim 11, characterized in that: The angle between the first light source (121) and the second light source (122) is in the range of 70° to 90°; The angle between a line connecting the center of the first light source (121) and the center of the display panel (10) and a line connecting the center of the second light source (122) and the center of the display panel (10) is the angle between the two light sources.

15. The display module according to claim 11, characterized in that: The light source group (12) further comprises a plurality of third light sources (123) arranged non-adjacent to the camera (11), and the angle range between two adjacent third light sources (123) is 20° to 35°; The angle between a line connecting the center of one third light source (123) and the center of the display panel (10) and a line connecting another third light source (123) and the center of the display panel (10) is the angle between the two third light sources (123).

16. A VR device, characterized in that: The VR device comprises an optical module (3) and a display module according to any one of claims 1 to 15, and the light emitted by the display panel (10) is projected to the human eye through the optical module (3).

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