LED lamp bead having distributed chips, and LED display screen

Abstract

Disclosed in the present invention is an LED lamp bead having distributed chips, comprising a lamp bead bottom plate, a package colloid, and a light-emitting chip group fixedly mounted above the lamp bead bottom plate. The lamp bead bottom plate is inserted into the package colloid. A light-transmitting colloid layer is provided inside the package colloid. The light-emitting chip group comprises a first light-emitting group and a second light-emitting group, and the first light-emitting group and the second light-emitting group each comprise light-emitting chips of red, green, and blue types. The light-emitting chips in the first light-emitting group and the light-emitting chips in the second light-emitting group are arranged in an alternate manner. The structural configuration of the chips of the lamp bead mitigates the color cast problem that occurs when the lamp bead is viewed from different directions. The color temperature drift problem of a display picture that occurs when the lamp bead is viewed from different viewing angles is solved. Also disclosed in the present invention is an LED display screen, comprising multiple LED lamp beads having distributed chips, wherein the multiple LED lamp beads are evenly distributed. The lamp beads are arranged in the display screen, effectively improving the frame rate and the color display function of the LED display screen.

Description

LED lamp bead with distributed chip and LED display screen Technical Field

[0001] The present invention belongs to the technical field of LED display, and in particular relates to an LED lamp bead with distributed chips and an LED display screen. Background Art

[0002] LED display technology is widely used in modern society. LED displays rely primarily on LED lamp beads. Each LED bead contains three color chips: red, green, and blue. These three chips mix to create a myriad of colors.

[0003] In existing technology, a lamp bead typically contains only one red, green, and blue chip each, arranged vertically. Because the three chips are thin and lightweight and located on the same bottom surface within the lamp bead, they maintain the same horizontal position. However, human viewing angles vary. Because the chips are arranged vertically, when viewed from a vertical perspective (top-down or bottom-up), the chips block each other, resulting in an incomplete color display and, consequently, color temperature drift in the displayed image.

[0004] Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an LED lamp bead with distributed chips to solve the problem in the prior art that the display screen has color temperature drift when viewed from different viewing angles during direct display.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is to provide an LED lamp bead with distributed chips, including a lamp bead base plate, a packaging colloid and a light-emitting chip group fixedly installed above the lamp bead base plate; the lamp bead base plate is inserted into the packaging colloid; the lamp bead base plate includes an electrode area and a pin area, the electrode area is electrically connected to the light-emitting chip group, and the pin area serves as a power supply pin connected to a power supply; a layer of light-transmitting colloid is provided inside the packaging colloid, and the light-transmitting colloid covers the electrode area and the light-emitting chip group; the light-emitting chip group includes a first light-emitting group and a second light-emitting group, both of which include three types of light-emitting chips: red, green and blue. The three types of light-emitting chips in the first light-emitting group are distributed in a triangle, and the three types of light-emitting chips in the second light-emitting group are distributed in an inverted triangle, and the light-emitting chips in the first light-emitting group and the second light-emitting group are arranged in an staggered manner.

[0007] In some embodiments, the first light-emitting group includes a first red light chip, a first green light chip, and a first blue light chip, and the second light-emitting group includes a second red light chip, a second green light chip, and a second blue light chip; the three light-emitting chips in the first light-emitting group are respectively arranged at the three vertex positions of the triangular distribution, and the three light-emitting chips in the second light-emitting group are respectively arranged at the three vertex positions of the inverted triangular distribution, and the triangular distribution and the inverted triangular distribution are staggered and superimposed on each other.

[0008] In some embodiments, the three vertices of the inverted triangle distribution are respectively arranged at the midpoints of the three sides corresponding to the triangular distribution. Among the six light-emitting chips after the triangular distribution and the inverted triangle distribution are staggered and superimposed, each light-emitting chip is of a different type from the two adjacent light-emitting chips.

[0009] In some embodiments, the three vertices of the inverted triangle distribution are all arranged outside the midpoints of the three sides corresponding to the triangular distribution. Among the six light-emitting chips after the triangular distribution and the inverted triangle distribution are staggered and superimposed, each light-emitting chip is of a different type from the two adjacent light-emitting chips.

[0010] In some embodiments, the electrode area includes an anode area and a cathode area, the bottom surfaces of the plurality of light-emitting chips are fixed to the upper surface of the anode area through a conductive colloid, and the upper surfaces of the plurality of light-emitting chips are respectively connected to the cathode area with wires; the cathode area includes a first cathode area, a second cathode area and a third cathode area; the light-emitting chip group shares an anode area, the first red light chip and the second red light chip share the first cathode area, the first green light chip and the second green light chip share the second cathode area, and the first blue light chip and the second blue light chip share the third cathode area.

[0011] In some embodiments, the electrode area includes an anode area and a cathode area, the bottom surfaces of the plurality of light-emitting chips are fixed to the upper surface of the cathode area through a conductive colloid, and the upper surfaces of the plurality of light-emitting chips are respectively connected to the anode area with wires; the anode area includes a first anode area, a second anode area and a third anode area; the light-emitting chip group shares a cathode area, the first red light chip and the second red light chip share the first anode area, the first green light chip and the second green light chip share the second anode area, and the first blue light chip and the second blue light chip share the third anode area.

[0012] In some embodiments, a lampshade is further included, and the lampshade covers the packaging colloid.

[0013] In some embodiments, the lower surface of the lampshade is a first curved surface, a downwardly concave refractive curved surface is formed on the top of the light-transmitting colloid, and a refractive cavity is formed between the first curved surface and the refractive curved surface.

[0014] In some embodiments, the encapsulating colloid and the light-transmitting colloid are both epoxy resins.

[0015] The present invention further provides an LED display screen, comprising a plurality of the above-mentioned LED lamp beads with distributed chips, wherein the plurality of the LED lamp beads with distributed chips are evenly distributed.

[0016] The present invention provides the following beneficial effects: The present invention discloses an LED lamp bead with distributed chips, comprising a lamp bead base plate, an encapsulating body, and a light-emitting chip group fixedly mounted above the lamp bead base plate. The lamp bead base plate is inserted into the encapsulating body; the lamp bead base plate includes an electrode area and a pin area. The electrode area is electrically connected to the light-emitting chip group, and the pin area serves as a power supply pin for connecting to a power source. A layer of light-transmitting colloid is disposed within the encapsulating body, covering the electrode area and the light-emitting chip group. The light-emitting chip group includes a first light-emitting group and a second light-emitting group, each of which includes red, green, and blue light-emitting chips. The three types of light-emitting chips in the first light-emitting group are arranged in a triangular pattern, while the three types of light-emitting chips in the second light-emitting group are arranged in an inverted triangular pattern. The light-emitting chips in the first and second light-emitting groups are arranged in an alternating pattern. This structural arrangement of the lamp bead chips effectively improves the color cast that occurs when the lamp bead is viewed from various directions. This effectively addresses the problem of color temperature drift in the displayed image when the lamp bead is viewed from different viewing angles. The present invention also discloses an LED display screen comprising a plurality of the above-mentioned LED lamp beads with distributed chips, wherein the plurality of LED lamp beads with distributed chips are evenly distributed. The above-mentioned lamp beads are arranged in the display screen, effectively improving the frame rate and color display function of the LED display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] FIG1 is a front cross-sectional structural diagram of an LED lamp bead with distributed chips according to the present invention;

[0018] FIG2 is a top view of the structure of an LED lamp bead with distributed chips according to the present invention;

[0019] FIG3 is an enlarged schematic diagram of point A in FIG2 ;

[0020] FIG4 is a top view of another embodiment of an LED lamp bead with distributed chips according to the present invention;

[0021] FIG5 is an enlarged schematic diagram of point B in FIG4 ;

[0022] FIG6 is a schematic diagram of a common anode of LED lamp beads with distributed chips according to the present invention;

[0023] FIG7 is a schematic diagram of a common cathode of an LED lamp bead with distributed chips according to the present invention;

[0024] FIG8 is a front cross-sectional structural diagram of another embodiment of an LED lamp bead with distributed chips according to the present invention;

[0025] FIG9 is a schematic diagram of the structure of an LED display screen. DETAILED DESCRIPTION

[0026] To facilitate understanding of the present invention, the present invention will be described in more detail below with reference to the accompanying drawings and specific embodiments. Preferred embodiments of the present invention are shown in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present invention.

[0027] It should be noted that, unless otherwise defined, all technical and scientific terms used in this specification have the same meanings as those commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification are intended solely for the purpose of describing specific embodiments and are not intended to limit the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0028] Figure 1 shows a front cross-sectional structural diagram of an LED lamp bead with distributed chips. Combined with Figures 2 and 3, the LED lamp bead with distributed chips includes a lamp bead base plate 2, a packaging colloid 1, and a light-emitting chip group 3 fixedly installed above the lamp bead base plate 2.

[0029] The lamp base plate 2 is inserted into the encapsulation body 1. The base plate 2 includes an electrode area 21 and a pin area 22. The portion of the base plate 2 located inside the encapsulation body 1 serves as the electrode area 21, while the portion located outside the encapsulation body 1 serves as the pin area 22. The electrode area 21 is electrically connected to the light-emitting chipset 3. The portion of the electrode area 21 that extends out of the encapsulation body 1 forms the pin area 22. This pin area 22 serves as the power supply pin for connecting to a power source. Contacts are provided on the PCB to power this pin area 22.

[0030] A layer of light-transmitting colloid 4 is disposed inside the encapsulation colloid 1 and covers the electrode region 21 and the light-emitting chip group 3. In the height direction, the upper surface of the light-transmitting colloid 4 is higher than the upper surface of the light-emitting chip 35.

[0031] Specifically, the encapsulating colloid 1 and the light-transmitting colloid 4 are both epoxy resins. The main function of epoxy resin is to protect the internal structure of the lamp bead and to shape the lamp bead. At the same time, epoxy resin can also slightly change the luminous color, luminous brightness and luminous angle of the lamp bead. The light-transmitting colloid 4 fills the inner cavity of the encapsulating colloid 1, covers the four sides and upper surface of each light-emitting chip 35, and the edge contour of the light-transmitting colloid 4 is flush with the top of the encapsulating colloid 1. The light-transmitting colloid 4 is in a fluid state before curing. The light-transmitting colloid 4 is formed by a specific mold. After curing, a smooth arc surface with a downward depression can be obtained. The degree of downward depression of the smooth arc surface can be adjusted according to different molds.

[0032] Furthermore, as shown in Figures 3 and 5, the light-emitting chip group 3 includes a first light-emitting group 31 and a second light-emitting group 32. Each of the first light-emitting group 31 and the second light-emitting group 32 includes three types of light-emitting chips 35: red, green, and blue. The three types of light-emitting chips 35 in the first light-emitting group 31 are arranged in a triangular pattern 33, while the three types of light-emitting chips 35 in the second light-emitting group 32 are arranged in an inverted triangular pattern 34. Furthermore, the light-emitting chips 35 in the first light-emitting group 31 and the second light-emitting group 32 are arranged in an alternating pattern.

[0033] The red, green, and blue light-emitting chips 35, when mixed, can create a myriad of colors. The first light-emitting group 31 and the second light-emitting group 32 each include at least one red, green, and blue light-emitting chip 35. The light-emitting chips 35 in each of these two groups are of different types, and the two groups are staggered. This structure ensures that, regardless of whether the lamp is viewed from above, below, or left or right, at least one group of red, green, and blue light-emitting chips 35 is always visible, even if some of the light-emitting chips 35 are obscured. Therefore, the image presented by the lamp is not affected.

[0034] In some embodiments, the first light-emitting group 31 includes a first red chip R1, a first green chip G1, and a first blue chip B1, and the second light-emitting group 32 includes a second red chip R2, a second green chip G2, and a second blue chip B2. The three light-emitting chips 35 in the first light-emitting group 31 are respectively arranged at the three vertices of a triangular distribution 33, and the three light-emitting chips 35 in the second light-emitting group 32 are respectively arranged at the three vertices of an inverted triangular distribution 34. The triangular distribution 33 and the inverted triangular distribution 34 are interlaced and superimposed.

[0035] In the above embodiment, the light-emitting chip group 3 includes a total of six light-emitting chips 35, with each light-emitting group containing three chips. The light-emitting chips 35 in each group are arranged in a triangular pattern. It should be noted that the positions of the three light-emitting chips 35 in each group are not fixed and can be rotated at the three corners. However, when the two groups of light-emitting chips 35 are stacked, adjacent chips must be of different types. This arrangement not only provides a simple structure and an aesthetically pleasing layout, but also ensures that the desired functionality is achieved at a low cost (using a minimum number of light-emitting chips 35), namely, solving the color cast problem of the lamp beads.

[0036] Specifically, referring to Figures 2 and 3 , in some embodiments, the three vertices of the inverted triangular distribution 34 are respectively located at the midpoints of the three corresponding sides of the triangular distribution 33. In the six light-emitting chips 35 formed by the interlaced superposition of the triangular distribution 33 and the inverted triangular distribution 34, each light-emitting chip 35 is of a different type from the two adjacent light-emitting chips 35.

[0037] In the triangular distribution 33, the first red light chip R1, the first green light chip G1 and the first blue light chip B1 of the first light-emitting group 31 are located in the upper middle, lower left and lower right positions, respectively. In the inverted triangular distribution 34, the second red light chip R2, the second green light chip G2 and the second blue light chip B2 of the second light-emitting group 32 are located in the lower middle, middle left and middle right positions, respectively. After the two groups of light-emitting chips 35 are superimposed, the three chips on each side are different. Taking looking from left to right as an example, you can see the first red light chip R1, the second blue light chip B2 and the first green light chip G1. The three colors of light are not blocked, and the picture after normal light mixing can be observed. Similarly, three different types of light-emitting chips can be seen when looking from top to bottom, from bottom to top, and from right to left, which will not be repeated here.

[0038] Specifically, referring to Figures 4 and 5 , in some embodiments, the three vertices of the inverted triangular distribution 34 are all located outside the midpoints of the three corresponding sides of the triangular distribution 33. In the six light-emitting chips 35 formed by the interlaced superposition of the triangular distribution 33 and the inverted triangular distribution 34, each light-emitting chip 35 is of a different type from the two adjacent light-emitting chips 35.

[0039] In the triangular distribution 33, the first red light chip R1, the first green light chip G1 and the first blue light chip B1 of the first light-emitting group 31 are located in the upper middle, lower left and lower right positions, respectively. In the inverted triangular distribution 34, the second red light chip R2, the second green light chip G2 and the second blue light chip B2 of the second light-emitting group 32 are located in the lower middle, upper left and upper right positions, respectively. After the two groups of light-emitting chips 35 are superimposed, the light-emitting color of each chip and the two adjacent chips are different. Taking the view from left to right as an example, the first red light chip R1, the second blue light chip B2, the first green light chip G1 and the second red light chip R2 can be seen. At least one light-emitting chip 35 of each color is observed, and the three colors of light are not blocked, and the picture after normal light mixing can be seen. Similarly, three different types of light-emitting chips can be seen when looking from top to bottom, from bottom to top, and from right to left, which will not be repeated here.

[0040] Furthermore, in this embodiment, as shown in FIG6 , in conjunction with FIG1 and FIG2 , the electrode region 21 includes an anode region 211 and a cathode region 212. The bottom surfaces of the plurality of light-emitting chips 35 are fixed to the upper surface of the anode region 211 via a conductive colloid 5 , and wires 6 are connected between the upper surfaces of the plurality of light-emitting chips 35 and the cathode region 212 . The cathode region 212 includes a first cathode region R(-), a second cathode region G(-), and a third cathode region B(-). The light-emitting chip group 3 shares a single anode region 211. The first red light chip R1 and the second red light chip R2 share the first cathode region R(-), the first green light chip G1 and the second green light chip G2 share the second cathode region G(-), and the first blue light chip B1 and the second blue light chip B2 share the third cathode region B(-).

[0041] The six light-emitting chips 35 share a common anode, providing unified power supply and effectively saving energy. Each color of the light-emitting chip 35 shares a common cathode, ensuring precise voltage distribution.

[0042] In certain embodiments, as shown in FIG7 (not shown in the structural diagram, for similar reasons), the electrode region 21 includes an anode region 211 and a cathode region 212. The bottom surfaces of the plurality of light-emitting chips 35 are fixed to the upper surface of the cathode region 212 via a conductive colloid 5. Wires 6 are connected between the upper surfaces of the plurality of light-emitting chips 35 and the anode region 211. The anode region 211 includes a first anode region R(+), a second anode region G(+), and a third anode region B(+). The light-emitting chip group 3 shares a common cathode region 212. The first red light chip R1 and the second red light chip R2 share the first anode region R(+), the first green light chip G1 and the second green light chip G2 share the second anode region G(+), and the first blue light chip B1 and the second blue light chip B2 share the third anode region B(+).

[0043] The six light-emitting chips 35 share a common cathode and are powered separately, allowing for precise voltage control and effective power reduction. Each color of light-emitting chip 35 shares a common anode, ensuring uniform power supply for all light-emitting chips 35 of the same color.

[0044] Furthermore, in this embodiment, the conductive colloid 5 is silver glue, which mainly plays the role of bonding and conducting electricity.

[0045] The wire 6 can be gold, silver, copper, or alloy wire. In this embodiment, gold wire is preferred because it is stable, anti-oxidative, and can ensure stable contact between the cathode region 212 and the light-emitting chip 35 .

[0046] Furthermore, in some embodiments, as shown in FIG8 , the LED lamp bead with distributed chips further includes a lampshade 7, which covers the top of the encapsulating colloid 1. The lower surface of the lampshade 7 is a first curved surface 71, and the top of the light-transmitting colloid 4 is formed with a downwardly concave refractive curved surface 41. A refractive cavity 411 is formed between the first curved surface 71 and the refractive curved surface 41.

[0047] Lampshade 7 is positioned above the refractive curved surface 41 of the light-transmitting colloid 4. The two combine to form an air cavity, or refractive cavity 411. Due to refraction, light from the light-emitting chip 35 is mixed and then emitted into refractive cavity 411. Within refractive cavity 411, the light is further refracted by the air, changing its path and increasing its luminous angle. The light source emitted by the light-emitting chip 35 changes from a point source to a surface source. Therefore, when viewed from all directions, the light color of the lamp beads remains consistent, preventing color temperature deviation, effectively solving the problem of color temperature drift.

[0048] As shown in FIG9 , an LED display screen 9 is shown, which includes a plurality of LED lamp beads 8 with distributed chips as described above, and the plurality of LED lamp beads 8 with distributed chips are evenly distributed.

[0049] The LED lamp beads 8 with distributed chips provided by the present invention have been improved to effectively expand the light-emitting area and eliminate the problem of lamp bead color temperature deviation. Therefore, installing it in the LED display screen 9 as shown in Figure 9 can effectively improve the frame rate and color display function of the LED display screen 9. When viewing the LED display screen 9 from different directions, the picture color of the LED display screen 9 is consistent, which can effectively improve the viewing experience. At the same time, the multiple lamp beads in the figure are evenly distributed and arranged in a matrix. This method is not only compact in structure and fully utilizes the space of the LED display screen 9, but also maintains the aesthetics of the layout.

[0050] As can be seen, the present invention discloses an LED lamp bead with distributed chips, comprising a lamp bead base plate, an encapsulating body, and a light-emitting chip group fixedly mounted above the lamp bead base plate. The lamp bead base plate is inserted into the encapsulating body; the lamp bead base plate includes an electrode area and a pin area. The electrode area is electrically connected to the light-emitting chip group, and the pin area serves as a power supply pin for connecting to a power source. A layer of light-transmitting colloid is disposed within the encapsulating body, covering the electrode area and the light-emitting chip group. The light-emitting chip group includes a first light-emitting group and a second light-emitting group, each of which includes three types of light-emitting chips: red, green, and blue. The three types of light-emitting chips in the first light-emitting group are arranged in a triangular pattern, while the three types of light-emitting chips in the second light-emitting group are arranged in an inverted triangular pattern. The light-emitting chips in the first and second light-emitting groups are arranged in an alternating pattern. By configuring the above-described lamp bead chip structure, the color cast problem that occurs when the lamp bead is viewed from various directions can be effectively improved. This effectively solves the problem of color temperature drift in the displayed image when the lamp bead is viewed from different angles. The present invention also discloses an LED display screen comprising a plurality of the above-mentioned LED lamp beads with distributed chips, wherein the plurality of LED lamp beads with distributed chips are evenly distributed. The above-mentioned lamp beads are arranged in the display screen, effectively improving the frame rate and color display function of the LED display screen.

[0051] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's description and drawings, or directly or indirectly applied to other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An LED lamp bead with distributed chips, characterized in that: It includes a lamp bead base plate, a packaging colloid, and a light-emitting chip group fixedly installed above the lamp bead base plate; The lamp bead bottom plate is inserted into the packaging colloid; the lamp bead bottom plate includes an electrode area and a pin area, the electrode area is electrically connected to the light-emitting chip group, and the pin area serves as a power supply pin connected to a power source; A layer of light-transmitting colloid is arranged inside the packaging colloid, and the light-transmitting colloid covers the electrode area and the light-emitting chip group; The light-emitting chip group includes a first light-emitting group and a second light-emitting group. The first light-emitting group and the second light-emitting group both include three types of light-emitting chips: red, green and blue. The three types of light-emitting chips in the first light-emitting group are distributed in a triangle, and the three types of light-emitting chips in the second light-emitting group are distributed in an inverted triangle. The light-emitting chips in the first light-emitting group and the second light-emitting group are arranged in an alternating manner.

2. The LED lamp bead with distributed chips according to claim 1, characterized in that: The first light-emitting group includes a first red light chip, a first green light chip and a first blue light chip, and the second light-emitting group includes a second red light chip, a second green light chip and a second blue light chip; the three light-emitting chips in the first light-emitting group are respectively arranged at the three vertex positions of the triangular distribution, and the three light-emitting chips in the second light-emitting group are respectively arranged at the three vertex positions of the inverted triangular distribution, and the triangular distribution and the inverted triangular distribution are staggered and superimposed on each other.

3. The LED lamp bead with distributed chips according to claim 2, characterized in that: The three vertices of the inverted triangle distribution are respectively arranged at the midpoints of the three sides corresponding to the triangle distribution. Among the six light-emitting chips after the triangle distribution and the inverted triangle distribution are staggered and superimposed, each light-emitting chip is of a different type from the two adjacent light-emitting chips.

4. The LED lamp bead with distributed chips according to claim 2, characterized in that: The three vertices of the inverted triangle distribution are all arranged outside the midpoints of the three sides corresponding to the triangle distribution. Among the six light-emitting chips after the triangle distribution and the inverted triangle distribution are staggered and superimposed, each light-emitting chip is of a different type from the two adjacent light-emitting chips.

5. The LED lamp bead with distributed chips according to claim 3 or 4, characterized in that: The electrode area includes an anode area and a cathode area, the bottom surfaces of the plurality of light-emitting chips are fixed to the upper surface of the anode area through a conductive colloid, and the upper surfaces of the plurality of light-emitting chips are respectively connected to the cathode area with wires; the cathode area includes a first cathode area, a second cathode area and a third cathode area; the light-emitting chip group shares an anode area, the first red light chip and the second red light chip share the first cathode area, the first green light chip and the second green light chip share the second cathode area, and the first blue light chip and the second blue light chip share the third cathode area.

6. The LED lamp bead with distributed chips according to claim 3 or 4, characterized in that: The electrode area includes an anode area and a cathode area, the bottom surfaces of the plurality of light-emitting chips are fixed to the upper surface of the cathode area through a conductive colloid, and the upper surfaces of the plurality of light-emitting chips are respectively connected to the anode area with wires; the anode area includes a first anode area, a second anode area and a third anode area; the light-emitting chip group shares a cathode area, the first red light chip and the second red light chip share the first anode area, the first green light chip and the second green light chip share the second anode area, and the first blue light chip and the second blue light chip share the third anode area.

7. The LED lamp bead with distributed chips according to any one of claims 1 to 4, characterized in that: It also includes a lampshade, which covers the top of the packaging colloid.

8. The LED lamp bead with distributed chips according to claim 7, characterized in that: The lower surface of the lampshade is a first curved surface, the top of the light-transmitting colloid is formed with a downwardly concave refractive curved surface, and a refractive cavity is formed between the first curved surface and the refractive curved surface.

9. The LED lamp bead with distributed chips according to any one of claims 1 to 4, characterized in that: The packaging colloid and the light-transmitting colloid are both epoxy resins.

10. An LED display screen, characterized in that: It comprises a plurality of LED lamp beads with distributed chips as described in any one of claims 1 to 9, wherein the plurality of LED lamp beads with distributed chips are evenly distributed.

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