Display screen

Abstract

A display screen (100), comprising: a plurality of light-emitting devices (1) arranged in an array, wherein the plurality of light-emitting devices (1) include first light-emitting devices and second light-emitting devices disposed adjacent to each other, the optical axes of light beams emitted by the first light-emitting devices and the second light-emitting devices have different directions, and the first light-emitting devices and the second light-emitting devices are used for emitting light to different viewing regions to form display images. Different display images can be directly and simultaneously observed at multiple viewing angles without the need to provide other optical devices for assisting in adjusting the light exit direction of light, such as a liquid crystal panel or a grating, inside or on the light exit side of the display screen (100). The display screen (100) has a simple structure and can meet the requirements for thin and light design.

Description

A display screen

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202411534992.6, filed with the State Intellectual Property Office of the People's Republic of China on October 30, 2024, entitled "A Display Screen", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of display technology, and more particularly to a display screen. Background Technology

[0004] Most current displays are single-viewing-angle products; users see the same image from different angles. To allow users to see different images from different viewing angles, the common solution is to use an LCD panel or grating to direct light to different areas to form an image. However, LCD panels and gratings increase the thickness of the display, which is not conducive to the design of thinner and lighter products, and it is also difficult to increase the size of the display. Summary of the Invention

[0005] This application provides a display screen for displaying different images from different viewing angles.

[0006] This application provides a display screen, which includes a plurality of light-emitting devices arranged in an array; the plurality of light-emitting devices include a first light-emitting device and a second light-emitting device arranged adjacent to each other, the optical axes of the light beams emitted by the first light-emitting device and the second light-emitting device are oriented differently, and the first light-emitting device and the second light-emitting device are used to emit light to different viewing areas to form a display image.

[0007] In some embodiments of this application, the display screen further includes a driving circuit board and a plurality of support members, and the light-emitting device is electrically connected to the driving circuit board; the light-emitting device is fixed to an inclined surface of the support member on the side away from the driving circuit board, and the inclination of the inclined surfaces corresponding to the first light-emitting device and the second light-emitting device is different.

[0008] In some embodiments of this application, the display screen further includes a plurality of flexible circuit boards, the flexible circuit boards being located at least between the light-emitting device and the support member, and the light-emitting device being electrically connected to the driving circuit board through the flexible circuit boards.

[0009] In some embodiments of this application, at least some of the light-emitting devices are connected to the same flexible circuit board.

[0010] In some embodiments of this application, the support member has a circuit inside, and the light-emitting device is electrically connected to the driving circuit board through the circuit inside the support member.

[0011] In some embodiments of this application, the support further includes a fixing buckle located on at least one side of the inclined surface for fixing the light-emitting device to the inclined surface.

[0012] In some embodiments of this application, the display screen further includes a fixing bracket, which covers the surface of the flexible circuit board opposite to the support member, and the fixing bracket is fixedly connected to the drive circuit board.

[0013] In some embodiments of this application, the plurality of light-emitting devices constitute a plurality of light-emitting device groups, and the plurality of light-emitting device groups are arranged at intervals along a first direction;

[0014] Each of the light-emitting device groups includes a plurality of light-emitting devices arranged along a second direction, the first direction and the second direction intersecting, wherein the plurality of light-emitting devices arranged along the second direction are arranged alternately with the first light-emitting devices and the second light-emitting devices;

[0015] Alternatively, each of the light-emitting device groups includes a plurality of light-emitting devices arranged in an array along the first direction and the second direction, wherein the first light-emitting device and the second light-emitting device are arranged alternately in the plurality of light-emitting devices arranged along the first direction, and the first light-emitting device and the second light-emitting device are arranged alternately in the plurality of light-emitting devices arranged along the second direction.

[0016] In some embodiments of this application, each of the light-emitting device groups includes multiple light-emitting devices with the optical axes of the emitted beams facing the same direction, the distance between adjacent light-emitting devices with the optical axes of the emitted beams facing the same direction in the second direction is a first distance, the distance between adjacent light-emitting device groups in the first direction is a second distance, and the first distance is equal to the second distance.

[0017] In some embodiments of this application, the light-emitting device includes a light-emitting chip and a lens, the lens being located on the light-emitting side of the light-emitting chip, and the lens being used to make the width of the light beam emitted by the light-emitting chip in the first direction smaller than the width of the light beam in the second direction.

[0018] In some embodiments of this application, the lens is a cylindrical lens that extends along the second direction. The width of the cylindrical lens in the first direction is equal to the width of the light-emitting chip in the first direction. The curvature of the light-emitting surface of the cylindrical lens satisfies the following relationship: ρ = 2 / a, where ρ represents the curvature of the light-emitting surface of the cylindrical lens and a represents the width of the light-emitting chip in the first direction.

[0019] In some embodiments of this application, the light-emitting device includes a light-emitting chip and a photomask. The photomask has a through slot extending along the second direction. The light-emitting chip is located in the through slot. The cross-sectional area of ​​the through slot gradually increases along the optical axis direction of the light beam emitted by the light-emitting chip. The photomask is used to make the width of the light beam emitted by the light-emitting chip in the first direction smaller than the width of the light beam in the second direction.

[0020] The beneficial effects of this application are as follows:

[0021] The display screen provided in this application includes: a plurality of light-emitting devices arranged in an array; the plurality of light-emitting devices include a first light-emitting device and a second light-emitting device arranged adjacent to each other, the optical axes of the light beams emitted by the first light-emitting device and the second light-emitting device are oriented differently, the first light-emitting device and the second light-emitting device are used to emit light to different viewing areas to form display images, and there is no need to set other optical devices, such as liquid crystal panels or gratings, inside the display screen or on its light-emitting side to assist in adjusting the light emission direction, so that different display images can be observed directly at multiple viewing angles simultaneously. The structure of this display screen is simple and can meet the needs of thin and light design. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 is a schematic diagram of the structure of a display screen provided in an embodiment of this application;

[0024] Figure 2 is a schematic diagram of an application scenario of a display screen provided in an embodiment of this application;

[0025] Figure 3 is a schematic diagram of another application scenario of the display screen provided in the embodiment of this application;

[0026] Figure 4 is a schematic diagram of another display screen provided in an embodiment of this application;

[0027] Figure 5 is a schematic diagram of another application scenario of the display screen provided in the embodiment of this application;

[0028] Figure 6 is a schematic diagram of the structure of a single display unit in Figure 1 or Figure 4;

[0029] Figure 7 is a schematic diagram of another display unit provided in an embodiment of this application;

[0030] Figure 8 is a structural schematic diagram of a light strip provided in an embodiment of this application;

[0031] Figure 9 is a schematic diagram of the structure of a light-emitting device provided in an embodiment of this application;

[0032] Figure 10 is a schematic diagram of another light-emitting device provided in an embodiment of this application;

[0033] Figure 11 is a structural schematic diagram of a support member provided in an embodiment of this application;

[0034] Figure 12 is a structural schematic diagram of another support member provided in an embodiment of this application;

[0035] Figure 13 is a structural schematic diagram of another support member provided in an embodiment of this application;

[0036] Figure 14 is a structural schematic diagram of another support member provided in an embodiment of this application;

[0037] Figure 15 is a structural schematic diagram of another display screen provided in an embodiment of this application;

[0038] Figure 16 is a schematic diagram of the structure of a single display unit in the display screen shown in Figure 15;

[0039] Figure 17 is a schematic diagram of the installation process of a display screen provided in an embodiment of this application.

[0040] Explanation of reference numerals in the attached drawings: Q - Light-emitting device group, D1 - First direction, D2 - Second direction, 100 - Display screen, 200 - Building, 20 - Viewing area, 1 - Light-emitting device, 2 - Driving circuit board, 3 - Support, 4 - Flexible circuit board, 5 - Rigid support plate, 6 - Fixed bracket, 11 - Light-emitting chip, 111 - First light-emitting chip, 112 - Second light-emitting chip, 113 - Third light-emitting chip, 12 - Lens, 13 - Photomask, 31 - Inclined surface, 32 - Fixed buckle, 311 - First side, 312 - Second side, d1 - First spacing, d2 - Second spacing. Detailed Implementation

[0041] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the application will be further described below in conjunction with the accompanying drawings and embodiments. However, the exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the figures denote the same or similar structures, and therefore repeated descriptions of them will be omitted. Terms describing position and direction described in this application are illustrative based on the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this application. The accompanying drawings of this application are for illustrating relative positional relationships only and do not represent actual scale.

[0042] Figure 1 is a schematic diagram of the structure of a display screen provided in an embodiment of this application.

[0043] As shown in Figure 1, the display screen includes multiple light-emitting devices 1 arranged in an array. The multiple light-emitting devices 1 include first light-emitting devices and second light-emitting devices arranged adjacent to each other. The light beams emitted by the first light-emitting devices and the second light-emitting devices have different optical axis orientations. The first light-emitting devices and the second light-emitting devices can be used to emit light to different viewing areas to form display images. There is no need to set other optical devices, such as liquid crystal panels or gratings, inside the display screen or on its light-emitting side to assist in adjusting the light emission direction. Different display images can be directly observed simultaneously from multiple viewing angles. The structure of the display screen is simple and can meet the needs of thin and light design.

[0044] Multiple light-emitting devices 1 can constitute multiple light-emitting device groups Q. These groups Q are arranged at intervals along a first direction D1. Each group Q includes multiple light-emitting devices 1 arranged along a second direction D2. In each group Q, first and second light-emitting devices are arranged alternately. The first direction D1 and the second direction D2 intersect; optionally, they are orthogonal. The following embodiments will use the orthogonal case of first direction D1 and second direction D2 as an example for illustration.

[0045] It is understood that the first light-emitting device and the second light-emitting device mentioned in this application do not specifically refer to one or more of a plurality of light-emitting devices, but rather any light-emitting device 1 in the display screen can be used as both a first light-emitting device and a second light-emitting device. Furthermore, light-emitting devices 1 that are both first light-emitting devices may be used to display images to different viewing areas, and light-emitting devices 1 that are both second light-emitting devices may be used to display images to different viewing areas.

[0046] For example, when a display screen is used to display images to three or more different viewing areas, in the same light-emitting device group Q, if the nth light-emitting device 1 is the first light-emitting device, then the (n+1)th light-emitting device 1 is the second light-emitting device, and the (n+2)th light-emitting device 1 is the first light-emitting device. Although the nth light-emitting device 1 and the (n+2)th light-emitting device 1 are both called the first light-emitting device, they do not emit light to the same viewing area. However, in different groups of light-emitting devices Q, the nth light-emitting device 1 in each group Q is the first light-emitting device and emits light to the same viewing area.

[0047] Figure 2 is a schematic diagram of an application scenario of a display screen provided in an embodiment of this application; Figure 3 is a schematic diagram of another application scenario of a display screen provided in an embodiment of this application.

[0048] As shown in Figures 2 and 3, when the display screen 100 is placed as shown in Figure 1, the first direction D1 is the vertical direction and the second direction D2 is the horizontal direction. The display screen 100 can be used to allow viewers to see different display images from viewing areas 20 at different heights. It can typically be installed outdoors, facing a building 200 with multiple floors. Alternatively, the display screen 100 can also be installed indoors, facing multiple different floors within the building 200, with each floor of the building 200 serving as a viewing area 20. It is understood that due to the large height and volume of the building 200, the display screen 100 can typically be a multi-panel display.

[0049] For example, in one possible implementation, as shown in FIG2, the display screen 100 may surround the perimeter of the building 200. In another possible implementation, as shown in FIG2, the display screen 100 may enclose the building 200, wherein the bottom of the display screen 100 surrounds the building 200 and the top is curved. In yet another possible implementation, as shown in FIG3, the display screen 100 may be a flat display screen or a curved display screen, and the display screen 100 is erected in front of the building 200.

[0050] Figure 4 is a structural schematic diagram of another display screen provided in an embodiment of this application; Figure 5 is a schematic diagram of an application scenario of another display screen provided in an embodiment of this application.

[0051] The difference between the display screen shown in Figure 4 and the display screen shown in Figure 1 is that its placement direction is rotated by 90°. When the display screen is placed as shown in Figure 4, the first direction D1 is the horizontal direction and the second direction D2 is the vertical direction. Then, the display screen can be used to display images to multiple viewing areas 20 arranged in sequence along the horizontal direction as shown in Figure 5. The display screen 100 can be a flat display screen or a curved display screen, and can be set in indoor or outdoor scenes.

[0052] Figures 1 and 4 exemplarily illustrate the structure of a display screen capable of displaying images to seven different viewing areas. Therefore, for ease of description, in this embodiment, each of the seven light-emitting devices 1 in the display screen shown in Figure 1 or 4 is divided into a display unit. Each light-emitting device 1 in the display unit is used to emit light to a viewing area to form a displayed image. In practical applications, the number of light-emitting devices 1 in each display unit can be designed according to requirements. This embodiment is only illustrative and does not impose specific limitations.

[0053] Figure 6 is a schematic diagram of the structure of a single display unit in Figure 1 or Figure 4.

[0054] As shown in Figure 6, in this embodiment of the application, the display unit includes seven light-emitting devices 1 arranged along the second direction D2. The optical axes of the light beams emitted by the seven light-emitting devices 1 are oriented differently, and the display screen can be used to emit light to seven different viewing areas to form a display image.

[0055] Figures 1 and 4 exemplarily illustrate nine display units in a display screen. As shown in Figures 1, 4, and 6, the first light-emitting device in each display unit is the light-emitting device L. 1-1 L 2-1 L 3-1 L 4-1 L 5-1 L 6-1 L 8-1 L 9-1 The second light-emitting device in each display unit, namely light-emitting device 1L, is used to emit light into the same viewing area. 1-2 L 2-2 L 3-2 L 4-2 L 5-2 L 6-2 L 7-2 L 8-2 L 9-2 Used to emit light into the same viewing area, and so on, the w-th light-emitting device in each display unit is the light-emitting device L. 1-w L 2-w , ..., L n-w L n+1-w , ..., L m*n-w , ..., L (m+1)*n- w It is used to emit light into the same viewing area to form a display image, where n represents the number of display units in each light-emitting device group Q, m represents the number of light-emitting device groups Q in the display screen, and w takes the value from 1 to 7.

[0056] Specifically, this application uses support members 3 to adjust the orientation of the optical axis of the light beam emitted by the light-emitting device 1. Referring to Figures 1, 4, and 6, the display screen includes a driving circuit board 2 and multiple support members 3. The light-emitting device 1 is located on an inclined surface 31 of the support member 3 facing away from the driving circuit board 2. By changing the angle between the inclined surface 31 of the support member 3 and the surface of the driving circuit board 2, the orientation of the optical axis of the light beam emitted by the light-emitting device 1 fixed on the inclined surface 31 can be changed. For example, if the optical axis of the light beam emitted by the light-emitting device 1 is perpendicular to its corresponding inclined plane 31, and the inclined surfaces 31 of the support members 3 in the display unit have different degrees of inclination, then the orientation of the optical axis of the light beam emitted by the light-emitting device 1 in the display unit will be different.

[0057] Based on this, in the embodiments of this application, the tilting degree of the tilted surfaces 31 corresponding to the first light-emitting device and the second light-emitting device is different, so that the orientation of the optical axis of the light beam emitted by the first light-emitting device and the second light-emitting device is different.

[0058] This application embodiment adds a support member 3 to the display screen to change the light emission direction of the light-emitting device 1. Compared with components such as gratings or liquid crystal panels, the structure is simpler and the driving method is easier to design, which is beneficial to reduce the thickness of the display screen and reduce costs.

[0059] As shown in Figure 6, the light-emitting device 1 is attached to the inclined surface 31 of the support 3. A wire can be set inside the support 3. The light-emitting device 1 is electrically connected to the wire inside the support 3, and the wire inside the support 3 is connected to the drive circuit board 2. Thus, the light-emitting device 1 can be electrically connected to the drive circuit board 2. According to the drive signal transmitted by the drive circuit board 2, the light emission state of each light-emitting device 1 can be adjusted so that the light emitted by the light-emitting device 1 towards the corresponding viewing area forms a display image.

[0060] During manufacturing, the light-emitting device 1 can be fixed on the inclined surface 31 of the support 3 first, and then the light-emitting device 1 and the support 3 can be installed as a whole on the drive circuit board 2, and the wires inside the support 3 can be connected to the drive circuit board 2.

[0061] Figure 7 is a structural schematic diagram of another display unit provided in an embodiment of this application; Figure 8 is a structural schematic diagram of a light strip provided in an embodiment of this application.

[0062] As shown in Figures 1, 4 and 7, the display screen may also include multiple flexible circuit boards 4. Multiple light-emitting devices 1 in the same display unit can be connected to the same flexible circuit board 4 to form a light strip as shown in Figure 8. The flexible circuit board 4 is located between the light-emitting device 1 and the support member 3 and is fixed to the inclined surface 31 of the support member 3. The two ends of the flexible circuit board 4 are bent toward the side where the drive circuit board 2 is located and are electrically connected to the drive circuit board 2, so that the light-emitting device 1 can be electrically connected to the drive circuit board 2 through the flexible circuit board 4.

[0063] During manufacturing, the light-emitting devices 1 can be first attached to the flexible circuit board 4 to form a straight light strip. Then, the flexible circuit board 4 is fixed to the support 3. The flexible circuit board 4 can be twisted to align the light-emitting devices 1 with the support 3 one by one. This allows the light emission direction of each light-emitting device 1 in the display unit to vary depending on the degree of inclination of the inclined surface 31 of the support 3. Integrating multiple light-emitting devices 1 into a light strip and then connecting it to the drive circuit board 2 simplifies the connection process and improves production efficiency.

[0064] The flexible circuit board 4 can be fixed to the inclined surface 31 of the support member 3 by attaching it, or by setting a fixing buckle 32 on the inclined surface 31 of the support member 3 to fix the flexible circuit board 4 to the inclined surface 31, or by combining the two fixing methods. The connection method between the flexible circuit board 4 and the support member 3 can be adjusted according to the actual situation and is not limited here.

[0065] In practical applications, a rigid support plate 5 can also be set between the support member 3 and the drive circuit board 2. For example, multiple light-emitting devices 1 in each display unit are connected to the same rigid support plate 5. During manufacturing, multiple support members 3 can be fixed to the rigid support plate 5 at the required intervals. Then, the light strips are installed on the support members 3, and the light-emitting devices 1 are aligned with the support members 3 one by one. The rigid support plate 5 is then fixed to the drive circuit board 2, and the flexible circuit board 4 is electrically connected to the drive circuit board 2. Since there are a large number of light-emitting devices 1 in the display screen, the light-emitting devices 1, support members 3, and flexible circuit board 4 in the display unit are assembled with the rigid support plate 5 into a component. Then, multiple of the above components are connected to the drive circuit board 2, which helps to reduce the difficulty of aligning the light-emitting devices 1 in the display screen.

[0066] The rigid support plate 5 can be fixed to the drive circuit board 2 by means of patch, adhesive, screw, or clip. For a more secure connection, the above methods can also be combined. The connection method between the rigid support plate 5 and the drive circuit board 2 can be determined according to the specific structure of the product and actual needs, and is not limited here.

[0067] The specific structures of the light-emitting device 1 and the support member 3 in the embodiments of this application are described below.

[0068] Figure 9 is a schematic diagram of the structure of a light-emitting device provided in an embodiment of this application.

[0069] As shown in Figure 9, the light-emitting device 1 can be a surface-mounted light-emitting diode (SMD LED), but is not limited to this. Each light-emitting device 1 encapsulates multiple light-emitting chips 11 that can emit light of different colors. For example, it may encapsulate a first light-emitting chip 111 for emitting red light, a second light-emitting chip 112 for emitting green light, and a third light-emitting chip 113 for emitting blue light. Then, each light-emitting device 1 can serve as a pixel of the display screen, and the light-emitting chips 11 in the light-emitting device 1 can serve as sub-pixels. By controlling the light color ratio of each light-emitting chip 11 in the light-emitting device 1 through a driving signal, each pixel can present the desired color.

[0070] Referring to Figures 1 and 4, in the same light-emitting device group Q, the optical axes of the light beams emitted by the light-emitting device 1, which emits light to the same viewing area, can be oriented in the same direction. That is, each light-emitting device group Q includes multiple light-emitting devices 1 whose optical axes of emitted light beams are oriented in the same direction, such as light-emitting device L. 1-1 L 2-1 and L 3-1 The optical axes of the emitted light beams are in the same direction. The distance between adjacent light-emitting devices 1 with the same optical axis orientation in the second direction D2 is the first distance d1, and the distance between adjacent light-emitting device groups Q in the first direction D1 is the second distance d2. The first distance d1 is equal to the second distance d2, so that each light-emitting device 1 used to emit light to the same viewing area can be evenly arranged, which is beneficial to improving the uniformity of the display screen. Furthermore, since the distance between the display screen and the viewing area is relatively far, the spacing of the pixels in the display screen used to emit light to the same viewing area can meet the display resolution requirements at this distance.

[0071] As shown in Figure 9, the light-emitting device 1 may also include a lens 12. The lens 12 is located on the light-emitting side of the light-emitting chip 11. The lens 12 can be used to make the width of the light beam emitted by the light-emitting chip 11 in the first direction D1 smaller than the width of the light beam in the second direction D2. That is, the lens 12 can narrow the width of the light beam emitted by the light-emitting chip 11 in the first direction D1, so that the light beam has higher collimation in the first direction D1, thereby improving the brightness and contrast of the display screen.

[0072] Specifically, lens 12 can be a cylindrical lens extending along the second direction D2. The width of the cylindrical lens in the first direction D1 is equal to the width of the light-emitting chip 11 in the first direction D1, and the curvature of the light-emitting surface of the cylindrical lens satisfies the following relationship: ρ = 2 / a, where ρ represents the curvature of the light-emitting surface of the cylindrical lens, and a represents the width of the light-emitting chip 11 in the first direction D1. The cross-section of the cylindrical lens in the first direction D1 has curved edges, so the light beam is affected by the surface shape of the cylindrical lens in the first direction D1, and the emission angle is narrowed. The cross-section of the cylindrical lens in the second direction D2 has straight edges, so the light beam is not affected by the surface shape of the cylindrical lens in the second direction D2, and the emission angle remains unchanged. Thus, the cylindrical lens can make the width of the light beam in the first direction D1 smaller than its width in the second direction D2. The collimation of the light beam emitted from the light-emitting chip 11 in the first direction D1 is better after passing through the cylindrical lens, which is beneficial to improving the brightness and contrast of the display screen.

[0073] Figure 10 is a schematic diagram of another light-emitting device provided in an embodiment of this application.

[0074] As shown in Figure 10, the light-emitting device 1 may include a light-emitting chip 11 and a photomask 13. The photomask 13 has a through slot extending along the second direction D2. The light-emitting chip 11 is located in the through slot. Along the optical axis of the light beam emitted by the light-emitting chip 11, the cross-sectional area of ​​the through slot gradually increases. The light beam emitted by the light-emitting chip 11 is restricted by the photomask 13 in the first direction D1, and the emission angle decreases. However, the cross-sectional area of ​​the through slot in the second direction D2 remains unchanged. The light beam emitted by the light-emitting chip 11 is not restricted by the photomask 13 in the second direction D2, and the emission angle remains unchanged. Thus, the photomask 13 can make the width of the light beam emitted by the light-emitting chip 11 in the first direction D1 smaller than the width of the light beam in the second direction D2, thereby improving the collimation of the light beam in the first direction D1.

[0075] Figure 11 is a structural schematic diagram of a support member provided in an embodiment of this application; Figure 12 is a structural schematic diagram of another support member provided in an embodiment of this application; Figure 13 is a structural schematic diagram of another support member provided in an embodiment of this application; Figure 14 is a structural schematic diagram of another support member provided in an embodiment of this application.

[0076] As shown in Figures 11-14, the support member 3 includes a fixing buckle 32, which is disposed on the inclined surface 31 of the support member 3. The fixing buckle 32 can be located on one side of the inclined surface 31 or on two opposite sides; for ease of description, these are referred to hereinafter as the first side 311 and the second side 312. The fixing buckle 32 can be used to fix the light-emitting device 1 or the flexible circuit board 4 to the inclined surface 31 of the support member 3, preventing the light-emitting device 1 from falling due to poor adhesion or gravity, thus avoiding affecting the resolution and integrity of the displayed image.

[0077] In some embodiments, as shown in FIG11, the support member 3 may include four block-shaped fixing buckles 32, which are respectively located at the four corners of the inclined surface 31, that is, fixing buckles 32 are provided at both ends of the first side 311 and the second side 312.

[0078] In some other embodiments, as shown in FIG12, the support member 3 may include two strip-shaped fixing buckles 32, which are respectively disposed on two opposite sides of the inclined surface 31 and extend along their corresponding sides, and their length may be the same as the length of the corresponding side.

[0079] In some other embodiments, as shown in FIG13, the support member 3 may include two strip-shaped fixing buckles 32, which may be disposed at both ends of one side of the inclined surface 31, for example, at both ends of the first side 311, and the extension direction of the strip-shaped fixing buckles 32 is perpendicular to the first side 311 where they are located.

[0080] In some other embodiments, as shown in FIG14, the support member 3 may include two block-shaped fixing buckles 32 and a strip-shaped fixing buckle 32, wherein the two block-shaped fixing buckles 32 are disposed at both ends of the first side 311 of the inclined surface 31, and the strip-shaped fixing buckle 32 is disposed on the second side 312 of the inclined surface 31 and extends along the second side 312.

[0081] Figure 15 is a schematic diagram of another display screen provided in an embodiment of this application.

[0082] As shown in Figure 15, in this embodiment of the application, multiple light-emitting device groups Q are arranged at intervals along a first direction D1. Each light-emitting device group Q may include multiple light-emitting devices 1 arranged in an array along the first direction D1 and a second direction D2. Among the multiple light-emitting devices 1 arranged along the first direction D1, the first light-emitting device and the second light-emitting device are arranged alternately. Among the multiple light-emitting devices 1 arranged along the second direction D2, the first light-emitting device and the second light-emitting device are arranged alternately. For example, light-emitting device L 1-1 If L is the first light-emitting device, then the light-emitting device L 1-2 L 2-2 L 1-3 L (n+1)-3 As the second light-emitting device, L 2-1 L (n+1)- 1 is the first light-emitting device.

[0083] Figure 16 is a schematic diagram of the structure of a single display unit in the display screen shown in Figure 15.

[0084] As shown in Figure 16, in this embodiment of the application, every four light-emitting devices 1 in the display screen shown in Figure 15 are divided into a display unit. The optical axis of the light beam emitted by the four light-emitting devices 1 in the display unit is different, and the display screen can display images to four different viewing areas.

[0085] Among them, the w-th light-emitting device in each display unit is the light-emitting device L. 1-w L 2-w , ..., L n-w L n+1-w , ..., L m*n-w , ..., L (m+1)*n-w It is used to emit light into the same viewing area to form a display image, where n represents the number of display units in each light-emitting device group Q, m represents the number of light-emitting device groups Q in the display screen, and w takes the value of 1 to 4.

[0086] As shown in Figures 15 and 16, to improve the uniformity of the displayed image, in the same light-emitting device group Q of this application embodiment, the light beams emitted by the light-emitting devices 1 that emit light to the same viewing area also have the same orientation. The distance between adjacent light-emitting devices 1 with the same orientation of their emitted light beams in the second direction D2 is the first distance d1, and the distance between adjacent light-emitting device groups Q in the first direction D1 is the second distance d2. The first distance d1 is equal to the second distance d2. By setting multiple rows of light-emitting devices 1 in the same light-emitting device group Q, the first distance d1 and the second distance d2 are smaller when the same number of light-emitting devices 1 are set. In other words, more light-emitting devices 1 can be set on the same size driving circuit board 2, thereby increasing the pixel density of the display screen and improving the resolution of the display screen.

[0087] In this embodiment of the application, the light emission direction of the light-emitting device 1 is changed by setting a support member 3. The light-emitting device 1 can be electrically connected to the driving circuit board 2 through the wires inside the support member 3, or it can be electrically connected to the driving circuit board 2 through the flexible circuit board 4.

[0088] Figure 17 is a schematic diagram of the installation process of a display screen provided in an embodiment of this application.

[0089] As shown in Figures 15-17, the light-emitting device 1 can be electrically connected to the driving circuit board 2 via the flexible circuit board 4. During manufacturing, the support member 3 can be first installed on the driving circuit board 2, and then the flexible circuit board 4 can be fixed to the support member 3. The light-emitting device 1 is pre-installed on the flexible circuit board 4 to form a light strip. The flexible circuit board 4 can be directly attached to the surface of the support member 3, and the size of the flexible circuit board 4 is adapted to the size of the surface of the support member 3. Therefore, the size of the flexible circuit board 4 can be made small enough, which helps to reduce the amount of electronic components used and save costs.

[0090] In practical applications, adjacent light-emitting devices 1 can share the same flexible circuit board 4 or the same support 3, and are not limited to a one-to-one correspondence between light-emitting devices 1, support 3 and flexible circuit board 4.

[0091] As shown in Figure 17, the display screen may further include a fixing bracket 6. The fixing bracket 6 covers the surface of the flexible circuit board 4 facing away from the support member 3, and the fixing bracket 6 is fixedly connected to the drive circuit board 2. The fixing bracket 6 can be arranged one-to-one with the support member 3, adjacent support members 3 can share the same fixing bracket 6, or all support members 3 can share the same fixing bracket 6. The fixing bracket 6 is provided with an opening for exposing the light-emitting device 1. The fixing bracket 6 can be used to fix the flexible circuit board 4, preventing the flexible circuit board 4 from loosening or falling off due to gravity or poor adhesion, which helps to improve the reliability of the product.

[0092] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0093] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A display screen, wherein, The display screen includes multiple light-emitting devices arranged in an array; the multiple light-emitting devices include a first light-emitting device and a second light-emitting device arranged adjacent to each other, the optical axes of the light beams emitted by the first light-emitting device and the second light-emitting device are oriented differently, and the first light-emitting device and the second light-emitting device are used to emit light to different viewing areas to form a display image.

2. The display screen as claimed in claim 1, wherein, The display screen also includes a driving circuit board and multiple support members. The light-emitting device is electrically connected to the driving circuit board. The light-emitting device is fixed to an inclined surface of the support member on the side away from the driving circuit board. The inclination of the inclined surfaces corresponding to the first light-emitting device and the second light-emitting device is different.

3. The display screen as claimed in claim 2, wherein, The display screen also includes a plurality of flexible circuit boards, which are located at least between the light-emitting device and the support member, and the light-emitting device is electrically connected to the driving circuit board through the flexible circuit boards.

4. The display screen as claimed in claim 3, wherein, At least some of the light-emitting devices are connected to the same flexible circuit board.

5. The display screen as claimed in claim 2, wherein, The support member has an internal circuit, and the light-emitting device is electrically connected to the driving circuit board through the internal circuit of the support member.

6. The display screen according to any one of claims 2-5, wherein, The support also includes a fixing buckle located on at least one side of the inclined surface for fixing the light-emitting device to the inclined surface.

7. The display screen as claimed in claim 3 or 4, wherein, The display screen also includes a fixing bracket, which covers the surface of the flexible circuit board opposite to the support member, and the fixing bracket is fixedly connected to the drive circuit board.

8. The display screen according to any one of claims 1-7, wherein the plurality of light-emitting devices constitute a plurality of light-emitting device groups, and the plurality of light-emitting device groups are arranged at intervals along a first direction; Each of the light-emitting device groups includes a plurality of light-emitting devices arranged along a second direction, the first direction and the second direction intersecting, wherein the plurality of light-emitting devices arranged along the second direction are arranged alternately with the first light-emitting devices and the second light-emitting devices; Alternatively, each of the light-emitting device groups includes a plurality of light-emitting devices arranged in an array along the first direction and the second direction, wherein the first light-emitting device and the second light-emitting device are arranged alternately in the plurality of light-emitting devices arranged along the first direction, and the first light-emitting device and the second light-emitting device are arranged alternately in the plurality of light-emitting devices arranged along the second direction.

9. The display screen as claimed in claim 8, wherein, Each of the light-emitting device groups includes multiple light-emitting devices with the optical axes of the emitted beams facing the same direction. The distance between adjacent light-emitting devices with the optical axes of the emitted beams facing the same direction in the second direction is a first distance, and the distance between adjacent light-emitting device groups in the first direction is a second distance. The first distance is equal to the second distance.

10. The display screen as claimed in claim 8 or 9, wherein, The light-emitting device includes a light-emitting chip and a lens. The lens is located on the light-emitting side of the light-emitting chip and is used to make the width of the light beam emitted by the light-emitting chip in the first direction smaller than the width of the light beam in the second direction.

11. The display screen as claimed in claim 10, wherein, The lens is a cylindrical lens that extends along the second direction. The width of the cylindrical lens in the first direction is equal to the width of the light-emitting chip in the first direction. The curvature of the light-emitting surface of the cylindrical lens satisfies the following relationship: ρ = 2 / a, where ρ represents the curvature of the light-emitting surface of the cylindrical lens and a represents the width of the light-emitting chip in the first direction.

12. The display screen as claimed in claim 8 or 9, wherein, The light-emitting device includes a light-emitting chip and a photomask. The photomask has a through slot extending along the second direction. The light-emitting chip is located in the through slot. The cross-sectional area of ​​the through slot gradually increases along the optical axis of the light beam emitted by the light-emitting chip. The photomask is used to make the width of the light beam emitted by the light-emitting chip in the first direction smaller than the width of the light beam in the second direction.

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