Light-emitting unit, display screen and vehicle lamp

Abstract

The application discloses a light-emitting unit, a display screen and a vehicle lamp. The light-emitting unit comprises a bottom plate, a pole piece unit and a light-emitting chip. The pole piece unit comprises at least two pole piece groups, and each pole piece group comprises a first pole piece and a second pole piece. In the X-axis direction, the length of the first pole piece is smaller than that of the second pole piece. In the same pole piece unit, the edges of each first pole piece and second pole piece close to each other form a cross-shaped avoiding area. The light-emitting chip is arranged on the surface of the second pole piece facing the light-emitting side, and the light-emitting chip is electrically connected with the first pole piece and the second pole piece in the pole piece group. The light-emitting chip is arranged close to the intersection of the avoiding area and is arranged at the corner of the second pole piece. Two light-emitting chips can be controlled independently, and different color display can be realized. The light-emitting chip is arranged at the corner of the second pole piece, and the light emitted by different light-emitting chips can be well fused. The avoiding area has a regular shape, and is beneficial to the processing and forming of the bottom plate.

Description

Technical Field

[0001] This application relates to the field of vehicle lighting technology, and more particularly to a light-emitting unit, a display screen, and a vehicle lamp. Background Technology

[0002] Interactive automotive lights and displays are becoming increasingly common, using light-emitting units to provide the light source. However, in existing light-emitting units, multiple light-emitting chips cannot be controlled individually; only one color can illuminate within a fixed area, limiting the displayed pattern. This results in limited interactive functionality, fewer pixels per area, reduced resolution, and significant limitations on displaying graphics and patterns simultaneously. Furthermore, the complex mounting base structure hinders manufacturing and increases production costs.

[0003] Therefore, improvements to existing technologies are necessary. Utility Model Content

[0004] This application aims to solve at least one of the technical problems existing in the prior art, and to provide a light-emitting unit, a display screen, and a vehicle light.

[0005] According to one aspect of this application, a light-emitting unit is provided, including a base plate, an electrode unit, and a light-emitting chip. The electrode unit includes at least two electrode groups arranged along the Y-axis in a three-dimensional coordinate system. Each electrode group includes a first electrode and a second electrode arranged sequentially along the X-axis. The first and second electrodes are embedded in the base plate, and the first and second electrodes have opposite polarities. In the X-axis direction, the length of the first electrode is less than the length of the second electrode. In the same electrode unit, the edges of each first and second electrode that are close to each other form a cross-shaped clearance area. The light-emitting chip is disposed on the surface of the second electrode facing the light-emitting side, and the light-emitting chip is electrically connected to the first and second electrodes in its corresponding electrode group. The light-emitting chip is located near the intersection of the clearance area and at the corner of the second electrode.

[0006] In one embodiment, the light-emitting chip is located in the middle of the electrode unit in the X-axis direction; or, the distance between the center of the light-emitting chip and the middle of the corresponding electrode unit in the X-axis direction is no greater than 5 mm.

[0007] In one embodiment, the light-emitting surface areas of each of the light-emitting chips are equal; or at least two light-emitting chips have different light-emitting surface areas, and the light-emitting surface areas of the two light-emitting chips are S1 and S2, respectively, where S1 > S2, satisfying: η = (S1 - S2) / S1, 0 < η ≤ 10%.

[0008] In one embodiment, in the Z-axis direction, the distance between the light-emitting surface of each light-emitting chip and the surface of the second electrode facing the light-emitting chip is equal.

[0009] In one embodiment, in the X-axis direction, the shortest distance from the edge of the light-emitting chip to the avoidance area is L1, satisfying: L1≥0.02mm; and / or, in the Y-axis direction, the shortest distance from the edge of the light-emitting chip to the avoidance area is L2, satisfying: L2≥0.02mm.

[0010] In one embodiment, the shortest length of the avoidance area in the X-axis direction is L3, satisfying: 0.45 mm ≤ L3 ≤ 0.55 mm; and / or, in the Y-axis direction, the shortest length of the avoidance area is L4, satisfying: 0.45 mm ≤ L4 ≤ 0.55 mm.

[0011] In one embodiment, the light emitted by the light-emitting chip is yellow, white, red, or blue.

[0012] According to another aspect of this application, a display screen is provided, including any of the aforementioned light-emitting units; the display screen further includes a printed circuit board and a control unit; the light-emitting units are arranged in an array on the printed circuit board; the control unit is disposed on the printed circuit board and coupled to the light-emitting units to control the light-emitting units.

[0013] In one embodiment, the display screen has at least two display areas, each display area being provided with monochrome and / or multicolor light-emitting units, and the display graphics and / or display frequencies of the different display areas are different.

[0014] According to another aspect of this application, a vehicle lamp is provided, including any of the light-emitting units described above.

[0015] The beneficial effects of this application are as follows: the two light-emitting chips are electrically connected to different electrode groups to form independent electrical paths. The two light-emitting chips can be controlled independently. When the light emitted by the two light-emitting chips is of different colors, different colors can be displayed, resulting in richer colors and content and improved interactivity. The light-emitting chips are located at the corners of the second electrode, so that the distance between the two light-emitting chips in one electrode unit is small in the Y-axis direction. When the two light-emitting chips are lit, the light emitted by the different light-emitting chips is well integrated, with good light saturation and more harmonious colors, effectively improving the mixed light emission effect. The two light-emitting chips are more biased towards the center of the base plate, ensuring the uniformity of the overall lighting of the light-emitting unit and good light emission effect. In addition, the regular shape of the avoidance area is conducive to the processing and forming of the base plate, and also facilitates the installation of the first and second electrodes with the base plate, reducing the processing difficulty of the base plate and improving production efficiency. Attached Figure Description

[0016] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of a light-emitting unit provided in an embodiment of this application.

[0018] Figure 2 yes Figure 1 Side view.

[0019] Figure 3 yes Figure 1 Top view.

[0020] Figure 4 yes Figure 3 Sectional view at point AA.

[0021] Figure 5 This is a schematic diagram of another light-emitting unit provided in an embodiment of this application.

[0022] Figure 6 This is a schematic diagram of another light-emitting unit provided in an embodiment of this application.

[0023] In the picture:

[0024] 10. Base plate;

[0025] 20. Electrode unit; 21. Electrode group; 211. First electrode; 212. Second electrode;

[0026] 30. Light-emitting chip; 31. First side; 32. Second side;

[0027] 40. Isolation structure; 41. Convex cup; 42. Enclosure support;

[0028] 50. Avoidance zone;

[0029] 60. Connecting wire. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0031] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0032] The light-emitting unit, display screen, and vehicle lights in this application will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] In existing technologies, multiple light-emitting chips cannot be controlled individually, only one color can be lit within the display area, the display pattern is fixed, there are few interactive functions, and the number of pixels in the same area will reduce the resolution; in addition, the base structure used for installation is complex and not conducive to processing and shaping.

[0034] To address the aforementioned technical problems, this application provides a light-emitting unit, including a base plate, an electrode unit, and a light-emitting chip. The electrode unit includes at least two electrode groups arranged along the Y-axis in a three-dimensional coordinate system. Each electrode group includes a first electrode and a second electrode arranged sequentially along the X-axis. The first and second electrodes are embedded in the base plate, and their polarities are opposite. In the X-axis direction, the length of the first electrode is less than the length of the second electrode. Within the same electrode unit, the edges of each first and second electrode that are close to each other form a cross-shaped clearance area. The light-emitting chip is disposed on the surface of the second electrode facing the light-emitting side, and is electrically connected to the first and second electrodes in its corresponding electrode group. The light-emitting chip is located near the intersection of the clearance area and at the corner of the second electrode. This will be described in detail below.

[0035] See Figure 1 and Figure 3The light-emitting unit includes a base plate 10, an electrode unit 20, and a light-emitting chip 30. The electrode unit 20 includes two electrode groups 21 arranged along the Y-axis in a three-dimensional coordinate system. The electrode group 21 includes a first electrode 211 and a second electrode 212 arranged sequentially along the X-axis. The first electrode 211 and the second electrode 212 are embedded in the base plate 10, and the polarities of the first electrode 211 and the second electrode 212 are opposite. In the X-axis direction, the length of the first electrode 211 is less than the length of the second electrode 212. In the same electrode unit 20, the edges of each first electrode 211 and the second electrode 212 that are close to each other form a cross-shaped avoidance area 50. The light-emitting chip 30 is disposed on the surface of the second electrode 212 facing the light-emitting side, and the light-emitting chip 30 is electrically connected to the first electrode 211 and the second electrode 212 in its corresponding electrode group 21. The light-emitting chip 30 is disposed near the intersection of the avoidance area 50 and at the corner of the second electrode 212.

[0036] In a single electrode unit 20, there are two electrode groups 21. Each electrode group 21 has a first electrode 211 and a second electrode 212. Each electrode group 21 also has a corresponding light-emitting chip 30. That is, there are two light-emitting chips 30 in a single electrode unit 20. The two light-emitting chips 30 are electrically connected to different electrode groups 21 to form independent electrical paths. The two light-emitting chips 30 can be controlled independently. When the light emitted by the two light-emitting chips 30 is of different colors, different colors can be displayed, making the displayed colors and content richer and improving the interactive performance.

[0037] The light-emitting chip 30 is located near the intersection of the avoidance area 50 and at the corner of the second electrode 212. Specifically, the light-emitting chip 30 is positioned near the edge of the second electrode 212 to form the avoidance area 50, meaning it is located at the corner of the second electrode 212. This arrangement results in a smaller distance between the two light-emitting chips 30 in one electrode unit 20 along the Y-axis. When both light-emitting chips 30 are lit, the light emitted by the different chips blends better, resulting in better light saturation, more harmonious colors, and effectively improved light mixing effect. Meanwhile, the two light-emitting chips 30 are more biased towards the center of the base plate 10 (the entire light-emitting unit). (In the X-axis direction, the length of the first electrode 211 is less than the length of the second electrode 212, and the light-emitting chip 30 is positioned on the second electrode 212, which is more biased towards the center of the base plate 10 than the light-emitting chip 30 is positioned on the first electrode 211. In the Y-axis direction, the two light-emitting chips 30 are closer to the edge of the second electrode 212, which is also more biased towards the center of the base plate 10.) This ensures the uniformity of the overall lighting of the light-emitting unit and provides a good light output effect.

[0038] It should be noted that the electrode (including the first electrode 211 and the second electrode 212) is usually a rectangular or other polygonal structure with multiple corners; the light-emitting chip 30 is disposed at the corner of the second electrode 212, including the edge of the light-emitting chip 30 being completely attached to the edge of the second electrode 212, or the maximum interval between the edge of the light-emitting chip 30 and the edge of the second electrode 212 being between 0.1 mm and 0.2 mm, that is, the light-emitting chip 30 is disposed close to the edge of the second electrode 212 to form the avoidance area 50.

[0039] In some embodiments, the maximum distance between the edge of the light-emitting chip 30 and the edge of the second electrode 212 can also be a value outside the range mentioned above, depending on the actual size of the electrode unit 20 in the light-emitting unit, so as to ensure that the light-emitting chip 30 is disposed as close as possible to the center of the electrode unit 20, which will not be elaborated here.

[0040] In practical use, the light-emitting unit is connected to the printed circuit board. By adjusting the current of different light-emitting chips 30, the brightness of the two light-emitting chips 30 can be made different, thereby controlling the final mixed light color and achieving the characteristic of multi-color light emission.

[0041] The light-emitting chip 30 is located near the edge of the second electrode 212 to form the avoidance area 50. That is, in the X-axis direction, the distance between the light-emitting chip 30 and the first electrode 211 is small. When the first electrode 211 and the second electrode 212 in the same electrode group 21 are electrically connected by the connecting line 60, the length of the connecting line 60 can be reduced, avoiding the connecting line 60 from being too long and reducing production costs.

[0042] It should be noted that the connecting wire 60 is a conductor, usually made of metallic materials, such as gold wire. Gold wire has good conductivity and stable physical and chemical properties, which can extend the product's lifespan. The specific connection method between the light-emitting chip 30 and the first electrode 211 and the second electrode 212 needs to be determined according to the different colors of the light-emitting chip 30; in some embodiments, the light emitted by the light-emitting chip 30 can be yellow light, white light, red light, blue light, or other colors of light-emitting chip 30, which is not limited here.

[0043] It is worth mentioning that in the same electrode unit 20, the edges of each first electrode 211 and second electrode 212 that are close to each other form a cross-shaped avoidance area 50. The avoidance area 50 has a regular shape, which is conducive to the processing and forming of the base plate 10, and also facilitates the installation of the first electrode 211 and second electrode 212 with the base plate 10, reducing the processing difficulty of the base plate 10 and improving production efficiency.

[0044] In some embodiments, the light-emitting unit further includes an isolation structure 40, which covers the surface of the light-emitting chip 30 and isolates the light-emitting chip 30 from the outside world. The isolation structure 40 includes a convex cup 41 and a retaining bracket 42. The convex cup 41 covers the surface of the light-emitting chip 30, isolating the light-emitting chip 30 from the outside world. The retaining bracket 42 is disposed on the surface of the base plate 10 and is disposed around the convex cup 41. The side of the convex cup 41 away from the base plate 10 has a central protrusion, and the distance h from the highest point of the convex cup 41 to the top surface of the retaining bracket 42 is (e.g., ...). Figure 2 The value shown is 0.6 mm.

[0045] By setting the convex shape of the cup 41, the light path of the light in the central area of ​​the light-emitting unit is lengthened, and the brightness of the light emitted from the area directly above the light-emitting chip 30 is reduced. This reduces the brightness of the area directly above the light-emitting chip 30, narrows the difference in light intensity between the area directly opposite the light-emitting chip 30 and the other light-emitting areas, and improves the fullness and uniformity of the overall light-emitting surface of the light-emitting unit, resulting in a good lighting effect. It has been verified that when the distance from the highest point of the cup 41 to the top surface of the enclosure bracket 42 is 0.6 mm, the lighting effect is generally better.

[0046] It is worth mentioning that when the two light-emitting chips 30 are positioned closer to the center of the base plate 10 (the entire light-emitting unit), more light is emitted directly from the light-emitting chips 30, and less light is reflected from the enclosure bracket 42. This means that the light-emitting chips 30 are more efficient, thus improving the lighting effect.

[0047] In some embodiments, the light-emitting chip 30 is located in the middle of the electrode unit 20 in the X-axis direction.

[0048] In the X-axis direction, two light-emitting chips 30 are set in the middle part of the electrode unit 20. The light emitted by the two chips is well integrated, with good saturation, and the displayed colors are more harmonious. This effectively improves the light mixing effect and ensures the uniformity of the overall lighting of the light-emitting unit, resulting in good light output.

[0049] In some embodiments, the light-emitting unit may be provided with multiple electrode units 20, such as Figure 6 As shown, along the X-axis, two electrode units 20 are provided, and the light-emitting chip 30 in each electrode unit 20 is disposed in the middle part of its corresponding electrode unit 20; in some embodiments, multiple electrode units 20 may also be arranged along the Y-axis, such as... Figure 5 As shown, it will not be elaborated further here.

[0050] It should be noted that, Figure 5The dashed frame only includes the first electrode 211 and the second electrode 212 within the dashed frame, excluding other components. The middle part of the electrode unit 20 is the middle part of the base plate 10 (only one electrode unit 20 is provided on the base plate 10, that is, the middle part of the part of the base plate 10 opposite to the electrode unit 20); the light-emitting chip 30 is located in the middle part of the electrode unit 20. It can be that the light-emitting chip 30 is in the standard geometric middle part of the electrode unit 20, or it can not be in the standard geometric middle part. For example, there may be installation errors during the installation of the light-emitting chip 30, which may cause the light-emitting chip 30 to deviate from the middle part of the electrode unit 20. For example, the center of the light-emitting chip 30 and the middle part of the corresponding electrode unit 20 may deviate from the middle part in the X-axis direction by no more than 5mm. Such cases all fall within the protection scope of this application.

[0051] In some embodiments, the light-emitting surface area of ​​each light-emitting chip 30 is equal.

[0052] Since the light-emitting surface areas of the two light-emitting chips 30 are equal, when the light-emitting unit is lit (both light-emitting chips 30 are lit at the same time), the uniformity of the overall lighting can be guaranteed, avoiding display defects such as dark areas and effectively improving the light output effect.

[0053] It should be noted that equality includes complete equality and near equality. In actual products, there may be processing errors, and the light-emitting surfaces of the two light-emitting chips 30 may have slight differences. The light-emitting surface areas of the two light-emitting chips 30 are divided into S1 and S2, where S1 > S2, satisfying: η = (S1 - S2) / S1, 0 < η ≤ 10%, and the light-emitting surface areas of the two light-emitting chips 30 are nearly equal. In addition, the light-emitting surface of the light-emitting chip 30 is the surface of the light-emitting chip 30 that is away from the second electrode 212.

[0054] See Figure 4 In the Z-axis direction, the distance between the light-emitting surface of each light-emitting chip 30 and the surface of the second electrode 212 facing the light-emitting chip 30 are all equal.

[0055] Each light-emitting chip 30 has the same thickness in the Z-axis direction, so that the light-emitting chips 30 do not block each other. The light emitted from one light-emitting chip 30 will not be blocked by another light-emitting chip 30, and the light can be directly emitted from the light-emitting unit, which effectively improves the light-emitting efficiency of the light-emitting chip 30.

[0056] It should be noted that the thickness of the light-emitting chip 30 is equal in the Z-axis direction, including the adhesive layer used to mount the light-emitting chip 30 on the second electrode 212, that is, the distance from the light-emitting surface of the light-emitting chip 30 to the surface of the second electrode 212 (the surface facing the light-emitting chip 30) is equal.

[0057] See Figure 3In the X-axis direction, the shortest distance from the edge of the light-emitting chip 30 to the avoidance area 50 is L1, which satisfies: L1≥0.02mm, for example 0.02mm, etc.; in the Y-axis direction, the shortest distance from the edge of the light-emitting chip 30 to the avoidance area 50 is L2, which satisfies: L2≥0.02mm, for example 0.02mm, etc.

[0058] Verification has shown that when L1 and L2 are within the above parameter range, the light-emitting chip 30 will not experience a short circuit, which is beneficial to improving the lifespan of the light-emitting unit.

[0059] It should be noted that in this embodiment, the light-emitting chip 30 has a first side 31 and a second side 32 close to the avoidance area 50. The first side 31 and the second side 32 are arranged parallel to the edge of the avoidance area 50. In some embodiments, they may not be arranged parallel to each other, as long as the shortest distance between them is not less than 0.02 mm, which avoids short circuit of the light-emitting chip 30 and is conducive to improving its service life.

[0060] When the values ​​of L1 and L2 are less than 0.02 mm, the first side 31 or the second side 32 is too close to the clearance area 50. When the light-emitting chip 30 is installed on the second electrode 212, there may be assembly errors or processing errors in the light-emitting chip 30 itself. The light-emitting chip 30 may encroach on the space of the clearance area 50, which is not conducive to the stability of the electrical connection and the heat dissipation performance. When the values ​​of L1 and L2 are within the above parameter range, the installation difficulty of the light-emitting chip 30 on the second electrode 212 is reduced.

[0061] In the X-axis direction, the shortest length of the avoidance area 50 is L3, which satisfies: 0.45 mm ≤ L3 ≤ 0.55 mm, for example, 0.45 mm, 0.50 mm, 0.55 mm, etc.; in the Y-axis direction, the shortest length of the avoidance area 50 is L4, which satisfies: 0.45 mm ≤ L4 ≤ 0.55 mm, for example, 0.45 mm, 0.50 mm, 0.55 mm, etc.

[0062] When the value of L3 is less than 0.45 mm, the light-emitting chip 30 is prone to short circuit, which is not conducive to the stability of the light-emitting unit and will affect heat dissipation, reducing the lifespan of the light-emitting unit. When the value of L3 is greater than 0.55 mm, the connecting line 60 needs to cross the avoidance area 50 for electrical connection, which increases the amount of connecting line 60 used and increases production costs.

[0063] Similarly, the value of L4 is similar to that of L3, and will not be repeated here; and when the value of L4 is greater than 0.55 mm, the distance between the two light-emitting chips 30 in the Y-axis direction becomes larger, which is not conducive to the centering of the light-emitting chips 30.

[0064] It should be noted that the arrangement position of the light-emitting chip 30 can be adjusted by adjusting the values ​​of L1, L2, L3, and L4, so that the light-emitting chip 30 is arranged in the center.

[0065] On the other hand, this application also relates to a display screen, including any of the aforementioned light-emitting units. The display screen further includes a printed circuit board and a control unit; the light-emitting units are arranged in an array on the printed circuit board; the control unit is disposed on the printed circuit board and coupled to the light-emitting units to control the light-emitting units. The display screen has at least two display areas, each display area is provided with monochrome and / or multi-color light-emitting units, and the display graphics and / or display frequencies of the different display areas are different.

[0066] In this embodiment, the display screen has two display areas, each equipped with multiple monochrome light-emitting units. The display graphics and display frequencies (i.e., the time interval between the on and off states of the light-emitting units) differ between the two display areas. By individually controlling the light-emitting chip 30 in each light-emitting unit, various patterns can be displayed in the two display areas, providing diverse interactive functions.

[0067] It should be noted that the display area of ​​the screen is not limited to two, and the number of light-emitting units in each display area is not specifically limited in this embodiment. In this embodiment, multiple monochrome light-emitting units can be multiple light-emitting units of the same color, or they can be composed of light-emitting units of different colors. Monochrome means that each light-emitting unit is monochrome, which can be any color, set according to the actual display effect required. In addition, in some embodiments, multiple multi-color light-emitting units can also be set in each display area, that is, a single light-emitting unit is multi-colored; or in some embodiments, monochrome light-emitting units and multi-color light-emitting units are used in combination to further enhance the diversity of interaction styles.

[0068] On the other hand, this application also relates to a vehicle lamp, including any of the aforementioned light-emitting units.

[0069] The choice of light-emitting units for vehicle lights depends on actual usage. For example, a single headlight can serve multiple purposes, integrating the entire headlight into a single unit while meeting regulations. This unit uses a dual-color (white and yellow) light-emitting unit, serving as daytime running lights, turn signals, and exterior decoration. Alternatively, taillights can use a dual-color (yellow and red) light-emitting unit, with different areas serving different functions, such as brake lights, parking lights, or turn signals. This multi-functionality reduces the number of lights required and the installation space needed, improving the overall layout and aesthetic design of the vehicle.

[0070] The technical solution provided in this application aims to form independent electrical paths by electrically connecting two light-emitting chips 30 to different electrode groups 21, allowing for individual control of the two light-emitting chips 30. When the light emitted by the two light-emitting chips 30 is of different colors, different colors can be displayed, resulting in richer colors and content and improved interactivity. The light-emitting chips 30 are located near the edge of the second electrode 212 to form the avoidance area 50, resulting in a smaller distance between the two light-emitting chips 30 in an electrode unit 20 in the Y-axis direction. When the two light-emitting chips 30 are lit, the light emitted by different light-emitting chips 30 blends well, resulting in good light saturation and more harmonious colors, effectively improving the mixed light emission effect. The two light-emitting chips 30 are more biased towards the center of the base plate 10, ensuring the uniformity of the overall lighting of the light-emitting unit and good light emission effect. In addition, the regular shape of the avoidance area 50 is conducive to the processing and forming of the base plate 10, and also facilitates the installation of the first electrode 211 and the second electrode 212 with the base plate 10, reducing the processing difficulty of the base plate 10 and improving production efficiency.

[0071] In the various embodiments of this application, unless otherwise specified or logically conflicting, the terminology or descriptions between different embodiments are consistent and can be referenced mutually. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships. In this application, "at least one" means one or more, and "more than one" means two or more.

[0072] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application. The order of the process numbers described above does not imply the order of execution; the execution order of each process should be determined by its function and internal logic.

[0073] The light-emitting unit, display screen, and vehicle lights provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand this application and its core ideas. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A light-emitting unit, characterized in that, include: Base plate; The electrode unit, in a three-dimensional coordinate system, includes at least two electrode groups arranged along the Y-axis direction. The electrode group includes a first electrode and a second electrode arranged sequentially along the X-axis direction. The first electrode and the second electrode are disposed on the base plate, and the polarities of the first electrode and the second electrode are opposite. In the X-axis direction, the length of the first electrode is less than the length of the second electrode; The edges of each of the first and second electrodes that are close to each other form a cross-shaped avoidance area; as well as A light-emitting chip is disposed on the surface of the second electrode facing the light-emitting side, and the light-emitting chip is electrically connected to the first electrode and the second electrode in the corresponding electrode group; the light-emitting chip is disposed near the intersection of the avoidance area and at the corner of the second electrode.

2. The light-emitting unit as described in claim 1, characterized in that, In the X-axis direction, the light-emitting chip is located in the middle of the electrode unit; Alternatively, the distance between the center of the light-emitting chip and the middle part of its corresponding electrode unit in the X-axis direction is no more than 5 mm.

3. The light-emitting unit as described in claim 1, characterized in that, The luminescent surface area of ​​each of the aforementioned light-emitting chips is equal; Or at least two light-emitting chips have different light-emitting surface areas, and the light-emitting surface areas of the two light-emitting chips are S1 and S2 respectively, where S1 > S2, satisfying: η = (S1 - S2) / S1, 0 < η ≤ 10%.

4. The light-emitting unit as described in claim 1, characterized in that, In the Z-axis direction, the distance between the light-emitting surface of each of the light-emitting chips and the surface of the second electrode facing the light-emitting chip is equal.

5. The light-emitting unit as described in claim 1, characterized in that, In the X-axis direction, the shortest distance from the edge of the light-emitting chip to the avoidance area is L1, satisfying: L1 ≥ 0.02 mm; and / or, In the Y-axis direction, the shortest distance from the edge of the light-emitting chip to the avoidance area is L2, which satisfies: L2≥0.02mm.

6. The light-emitting unit as described in claim 5, characterized in that, In the X-axis direction, the shortest length of the avoidance area is L3, satisfying: 0.45 mm ≤ L3 ≤ 0.55 mm; and / or, In the Y-axis direction, the shortest length of the avoidance area is L4, which satisfies: 0.45 mm ≤ L4 ≤ 0.55 mm.

7. The light-emitting unit as described in any one of claims 1-6, characterized in that, The light emitted by the light-emitting chip is any one of yellow light, white light, red light, or blue light.

8. A display screen, characterized in that, The display screen includes a light-emitting unit as described in any one of claims 1-7; the display screen further includes a printed circuit board and a control unit; the light-emitting unit array is arranged on the printed circuit board; The control unit is disposed on the printed circuit board and coupled to the light-emitting unit to control the light-emitting unit.

9. The display screen as described in claim 8, characterized in that, The display screen has at least two display areas, each display area is provided with monochrome and / or multicolor light-emitting units, and the display graphics and / or display frequencies of different display areas are different.

10. A vehicle light, characterized in that, It includes the light-emitting unit as described in any one of claims 1 to 7.

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