Light-emitting module, lamp panel and display equipment thereof

Abstract

The utility model relates to a light-emitting module, a lamp panel and a display device thereof. The light-emitting module comprises a first color light-emitting chip, a second color light-emitting chip and a third color light-emitting chip. The first color light-emitting chips are arranged on the circumference with the center of a preset area as the circle center, and the preset area is located in an area formed by surrounding the circumference; and the second color light-emitting chip and the third color light-emitting chip are arranged in the preset area. The arrangement mode of the light-emitting chips of the three colors can be improved, so that the problem of color separation is solved, and the light-emitting effect of color backlight is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the display technical field, in particular to a light-emitting module, a lamp panel and a display device thereof. BACKGROUND

[0002] Color backlight generally realizes high-brightness and high-color-saturation backlight source through combination of red (R), green (G) and blue (B) light-emitting chips. Each chip can be independently adjusted in brightness, thereby realizing rich color display and delicate brightness change.

[0003] The color backlight in the current industry is to directly solder R chips, G chips and B chips on a printed circuit board (PCB). However, the arrangement mode of the three kinds of light-emitting chips is not good, which leads to the problem of color separation and may not be able to display white light.

[0004] How to improve the arrangement mode of the three kinds of light-emitting chips to solve the problem of color separation and improve the light-emitting effect of the color backlight is still urgent to be solved. Invention content

[0005] The present application provides a light-emitting module, a lamp panel and a display device thereof to solve the problem of color separation of color backlight in related technologies and improve the light-emitting effect.

[0006] In a first aspect, some embodiments provide a light-emitting module, comprising: a first color light-emitting chip, a second color light-emitting chip and a third color light-emitting chip;

[0007] The first color light-emitting chip is arranged on a circumference with a center of a preset region as a center, and the preset region is in a region formed by the circumference; the second color light-emitting chip and the third color light-emitting chip are arranged in the preset region.

[0008] In the above embodiments, in an RGB display screen, R light-emitting chips, G light-emitting chips and B light-emitting chips produce various colors through color mixing. If the distance between any two of the R light-emitting chips, the G light-emitting chips and the B light-emitting chips is too large, obvious color blocks or color bands may be formed on the display screen. Therefore, in the RGB arrangement, the G light-emitting chip is arranged on the circumference, and the B light-emitting chip and the R light-emitting chip are arranged in the preset region formed by the circumference, so that adjacent light-emitting chips can more uniformly mix the required colors, which helps to optimize the color mixing effect, has no obvious boundary in vision, presents more smooth and uniform color transition, and reduces color separation.

[0009] In one of the embodiments, a line connecting the center of the second color light emitting chip and the center of the third color light emitting chip is a reference line, and the first color light emitting chip is arranged on both sides of the reference line; or a perpendicular line of the line connecting the center of the second color light emitting chip and the center of the third color light emitting chip is a reference line, and the first color light emitting chip is arranged on both sides of the reference line.

[0010] In one of the embodiments, the first color light emitting chips are symmetrically arranged along the reference line.

[0011] In one of the embodiments, the color light emitting chip is coated with the fluorescent powder.

[0012] In one of the embodiments, the fluorescent powder is used to make the second color light emitting chip emit a third color wave band.

[0013] In one of the embodiments, the number of the first color light emitting chips is 2, and the number of the second color light emitting chip and the third color light emitting chip is 1 respectively.

[0014] In one of the embodiments, the outer contour of the shape formed after the first color light emitting chips are connected is a regular polygon, and the first color light emitting chips are arranged based on the vertex of the regular polygon.

[0015] In one of the embodiments, the light emitting chips of the same color are connected in a single-wire series connection mode to form an electrical connection, and the electrical connections of the light emitting chips of different colors do not cross.

[0016] In a second aspect, the application provides a lamp panel, comprising a lamp bead.

[0017] The lamp bead comprises at least one light emitting module as described in the first aspect.

[0018] In a third aspect, the application provides a display device comprising at least one light emitting module as described in the first aspect. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the application or the related art, the drawings needed to be used in the embodiments or the related art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0020] Figure 1 The schematic diagram of the operation scene between the display device and the control device provided in some embodiments of the application;

[0021] Figure 2This is a schematic diagram of the structure of a display device provided in some embodiments of this application;

[0022] Figure 3 This is a schematic diagram of the structure of a display device provided in some embodiments of this application;

[0023] Figure 4 This is a schematic diagram of the structure of a display device provided in some embodiments of this application;

[0024] Figure 5 A schematic diagram of the physical structure of the backlight assembly and display panel provided in some embodiments of this application;

[0025] Figure 6 Schematic diagram of the structure of the light-emitting module provided in some embodiments of this application Figure 1 ;

[0026] Figure 7 Schematic diagram of the structure of the light-emitting module provided in some embodiments of this application Figure 2 ;

[0027] Figure 8 Schematic diagram of the structure of the light-emitting module provided in some embodiments of this application Figure 3 ;

[0028] Figure 9 Schematic diagram of the structure of the light-emitting module provided in some embodiments of this application Figure 4 ;

[0029] Figure 10 Schematic diagram of the structure of the light-emitting module provided in some embodiments of this application Figure 5 ;

[0030] Figure 11 Schematic diagram of the structure of the light-emitting module provided in some embodiments of this application Figure 6 ;

[0031] Figure 12 Schematic diagram of the structure of the light-emitting module provided in some embodiments of this application Figure 7 ;

[0032] Figure 13 This is a schematic diagram of the electrical connections in a light-emitting module provided in some embodiments of this application;

[0033] Figure 14 Schematic diagram of the structure of the light-emitting module provided in some embodiments of this application Figure 8 ;

[0034] Figure 15 Schematic diagram of the structure of the light-emitting module provided in some embodiments of this application Figure 9 ;

[0035] Figure 16(a) is a schematic diagram of the structure of the light-emitting module provided in some embodiments of this application.Figure 10 ;

[0036] Figure 16(b) is a schematic diagram of a light emitting module according to some embodiments of the present application Figure 10 One;

[0037] Figure 17(a) is a schematic diagram of a light emitting module according to some embodiments of the present application Figure 10 Two;

[0038] Figure 17(b) is a schematic diagram of a light emitting module according to some embodiments of the present application Figure 10 Three;

[0039] Figure 18 Figure 18(a) is a schematic diagram of a light emitting module according to some embodiments of the present application Figure 10 Four. DETAILED DESCRIPTION

[0040] The embodiments will be described in detail with reference to the drawings, of which examples are shown. The following description is made with reference to the accompanying drawings, in which like reference numerals refer to like elements, and positional adjectives such as "first", "second", "third", etc. are used to differentiate similar or like objects or entities, but do not necessarily imply a specific order or sequence unless otherwise noted. It is to be understood that such terminology is used interchangeably as appropriate under the circumstances.

[0041] It should be noted that the brief description of terms in the present application is only for the convenience of understanding the following described embodiments, and is not intended to limit the embodiments of the present application. Unless otherwise specified, these terms should be understood according to their ordinary and customary meanings.

[0042] The terms "first", "second", "third", etc. in the specification and claims of the present application and the above-described drawings are used to distinguish similar or like objects or entities, and do not necessarily mean a specific order or sequence, unless otherwise noted. It should be understood that such terminology can be interchanged as appropriate under the circumstances.

[0043] The term "connected" can include electrical connections or couplings, and when an element is considered to be "connected" to another element, it can be directly connected to the other element or a mediating element can be present at the same time.

[0044] The terms "include" and "have" and any variations thereof, are intended to cover but not exclusively include, for example, a product or device that includes a list of components does not have to be limited to only those components clearly listed, but can include other components not clearly listed or inherent to such products or devices.

[0045] The term "module" refers to any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic, or combination of hardware and / or software codes that can perform the functions described with respect to that element.

[0046] In the embodiments of the present application, the display device refers to a device with the ability of picture display and data processing. For example, the display device includes, but is not limited to, a smart television, a laser projection device, a monitor, an electronic bulletin board, an electronic table, a mobile terminal, a computer, a monitor, an advertising screen, a wearable device, a virtual reality device, an augmented reality device, and the like.

[0047] Figure 1 The schematic diagram of the operation scenario between the display device and the control device provided by some embodiments of the present application is shown in FIG. 1. As shown in FIG. 1, the user can operate the display device 200 through the control device 100 or the smart device 300. Figure 1

[0048] In some embodiments, the control device 100 can be a remote controller, a stylus, a handle, or the like. Taking the remote controller as an example, the communication between the remote controller and the display device 200 includes infrared protocol communication or Bluetooth protocol communication, and other short-distance communication modes, and the display device 200 is controlled through wireless or wired mode. The user can input the user instruction through the button on the remote controller, voice input, control panel input, and the like to control the display device 200.

[0049] In some embodiments, the smart device 300 (such as a mobile terminal, a tablet computer, a computer, a notebook computer, and the like) can also be used to control the display device 200. For example, the application running on the smart device is used to control the display device 200.

[0050] In some embodiments, the display device 200 can not receive the instruction by using the above-mentioned smart device or control device, but can receive the user's control through touch or gesture, and the like.

[0051] In some embodiments, the display device 200 can also be controlled in a manner other than the control device 100 and the smart device 300, for example, the user's voice instruction control can be directly received through the module configured inside the display device 200 to acquire the voice instruction, or the user's voice instruction control can be received through the voice control device arranged outside the display device 200.

[0052] ​In some embodiments, the display device 200 also communicates data with the server 400. The display device 200 can be communicatively coupled through a local area network (LAN), a wireless local area network (WLAN), and other networks. The server 400 can provide various content and interactions to the display device 200. The server 400 can be a cluster or multiple clusters, and can include one or more types of servers.

[0053] Figure 2 A structural schematic diagram of the display device 200 provided for some embodiments of the present application is shown.

[0054] In some embodiments, the display device 200 includes a display panel 210, which includes liquid crystal molecules configured to deflect based on received processed display data.

[0055] In some embodiments, the display device 200 includes a backlight assembly 220 configured to emit light based on backlight driving data. The display panel 210 can display a picture based on the backlight provided by the backlight assembly 220.

[0056] In some embodiments, the display device 200 includes a controller 230 configured to receive a video input signal or an image input signal, obtain backlight brightness data and display data from the video input signal or the image input signal, and output the backlight brightness data and the display data after performing format conversion, timing control, and other processing.

[0057] In some embodiments, the controller 230 is configured to obtain a video input signal or an image input signal (hereinafter referred to as an input signal) from an external input port or a network port, and perform format conversion, data processing, image rendering, and other operations on the input signal to improve the display quality of the input signal.

[0058] In some embodiments, the controller 230 can be configured to output data based on a preset protocol, such as an AM driving protocol, which is a protocol supported by the backlight assembly 220. The backlight assembly 220 can process the driving data of the preset protocol to generate corresponding backlight.

[0059] In some embodiments, the AM driving protocol includes a serial peripheral interface (SPI) protocol, which is a protocol widely used in display devices and has strong universality.

[0060] In some embodiments, the AM driving protocol includes the SPB protocol, in which an electrical signal that jumps during the data cycle corresponds to a 1 in the driving data code, and an electrical signal that does not jump during the data cycle corresponds to a 0 in the driving data code. Moreover, the level will jump once after each data cycle is completed, which has higher stability than the SPI protocol.

[0061] In some embodiments, reference is made to Figure 3 and Figure 4 The circuit structure shown includes a system-on-chip (SOC) 231 in the controller 230, which is configured to obtain video input signals or image input signals (hereinafter referred to as input signals) from an external input port or network port, and perform operations such as format conversion, data processing, and image rendering on the input signals.

[0062] In some embodiments, system-on-chip 231 is configured to generate backlight brightness data and display data based on video input signals or image input signals.

[0063] In some embodiments, reference is made to Figure 3 and Figure 4 The circuit structure shown includes a timing controller (Tcon) 232 in the controller 230, which is electrically connected to the system-on-a-chip 231 and configured to obtain intermediate display data, process the intermediate display data, and output display data in a timing sequence. The intermediate display data cannot be directly processed by the display panel 210; the display data is data that the display panel 210 can process.

[0064] In some embodiments, the timing controller 232 is electrically connected to the display panel 210 and is configured to map display data to the positions of liquid crystal molecules so that the display data obtained by the display panel is the data to be displayed.

[0065] In some embodiments, please continue to refer to Figure 3 and Figure 4 The circuit structure shown includes a controller 230 that may include a backlight controller (Bcon) 233 or a dimming controller (DCON) configured to obtain processing data associated with backlight brightness data, generate and output backlight drive data from the processing data.

[0066] In some embodiments, the backlight assembly 220 and the backlight controller 233 are electrically connected, and the backlight controller 233 is configured to map backlight driving data to the location of partitions so that the backlight driving data obtained by each partition is the data to drive it to emit light.

[0067] Referring to Figure 3 As shown in the circuit structure, the controller 230 can include a backlight controller 233, wherein the backlight controller 233 and the system chip 231 are electrically connected and configured to obtain the backlight brightness data from the system chip 231.

[0068] Referring to Figure 4 As shown in the circuit structure, the backlight controller 233 and the timing controller 232 are electrically connected and configured to obtain the backlight brightness data from the timing controller 232.

[0069] In some embodiments, the backlight assembly 220 includes at least one driving group 221, and the at least one driving group 221 and the controller 230 are electrically connected, and each driving group 221 includes at least one driving chip 2210, and the driving chip 2210 is configured to generate a driving signal based on backlight driving data.

[0070] In some embodiments, the backlight assembly 220 further includes a plurality of lamp beads, and at least one lamp bead is electrically connected to form a light-emitting unit group 222, and the light-emitting unit group 222 and one driving end of the driving chip 2210 are electrically connected and configured to emit light based on the driving signal.

[0071] In some embodiments, in the light-emitting unit group 222, at least one lamp bead is connected in series to form a lamp string, and the connection process is simple, the production cost is low, and the layout is convenient.

[0072] In some embodiments, in the light-emitting unit group 222, at least one lamp bead is connected in parallel, and the working states of each lamp bead do not affect each other.

[0073] In some embodiments, in the light-emitting unit group 222, at least one lamp bead is connected in series to form a lamp string, and at least one lamp string is connected in parallel, which is convenient for balancing the simple implementation of the connection process and the stability of the lamp bead light emission.

[0074] In some embodiments, the plurality of lamp beads in the backlight assembly 220 are arranged in an array, and the lamp string is a lamp string composed of lamp beads connected in series from left to right or from right to left, or a lamp string composed of lamp beads connected from top to bottom or from bottom to top, or a lamp string composed of lamp beads connected in a preset order (for example, rotation, bending, etc.), which is used to adapt to the display order of the display panel 10 to ensure the display quality of the display device.

[0075] In some embodiments, the lamp bead can be composed of MiniLED, MicroLED, WLED, RGB-LED, GB-rLED, or QLED (quantum dot).

[0076] In some embodiments, a physical structure diagram of the backlight assembly 220 and the display panel 210 is as shown in Figure 5As shown, the display panel 210 is disposed on the upper side of the backlight assembly 220, and the upper side of the display panel 210 can display a picture.

[0077] In some embodiments, the backlight assembly 220 includes a film 501 configured to improve the reflection efficiency of the backlight generated by the backlight assembly, adjust the light, increase the brightness and color saturation of the output image of the display, increase the utilization rate of light, and enable the screen to normally display images.

[0078] In some embodiments, the backlight assembly 220 includes a diffusion plate 502 configured to scatter light and uniformly guide light so that the brightness distribution of the entire display panel is more uniform.

[0079] In some embodiments, the backlight assembly 220 includes a bracket 503 configured to support the diffusion plate 402, the film 401, and the like, to maintain the optical distance between the lamp plate 408 and the diffusion plate 402.

[0080] In some embodiments, the backlight assembly 220 includes a reflective sheet 504 configured to reflect the backlight of the lamp plate 408 toward the diffusion plate 402.

[0081] In some embodiments, as an example of a micro-LED display device, the backlight assembly 220 is provided with a plurality of lamp plates 508, and the plurality of lamp plates 408 jointly emit light after being spliced to provide backlight to the display panel 210. Each lamp plate 508 includes a plurality of light-emitting regions, and each light-emitting region (also referred to as a partition) includes a plurality of micro-lamp beads.

[0082] The lamp plate 508 is electrically connected to at least one driving group 221, and in some embodiments, the driving group 221 is disposed on the lamp plate 508.

[0083] Color backlight generally realizes a high-brightness and high-color-saturation backlight source through the combination of red (Red), green (Green), and blue (Blue) light-emitting chips. In related technologies, the arrangement mode of the three colors of light-emitting chips in the color backlight is not good, which leads to the problem of color separation and may not be able to display white light. This reduces the light-emitting effect of the color backlight.

[0084] To this end, the present application provides a light-emitting module, a lamp plate, and a display device thereof. To solve at least one of the above technical problems. The technical concept of the present application is to change the arrangement mode of the three colors of light-emitting chips, so that the relative distance between the two colors of light-emitting chips randomly combined in the three colors of light-emitting chips is within a certain range. In this way, the problem of color separation and the inability to display white light caused by the excessive relative distance between the two colors of light-emitting chips in the traditional scheme is improved, and the purpose of improving the light-emitting effect of the color backlight is achieved.

[0085] The technical solutions of the present application will be described in detail below with reference to specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes can not be described in some embodiments. In order to facilitate explanation and description, the controller in the following embodiments can be any one of the system-on-chip and the timing controller mentioned in the above embodiments. It can be understood that the foregoing two controllers are only examples and are not limited.

[0086] In some embodiments, referring to Figure 6 FIG. 5 shows a structural schematic diagram of a light emitting module 500. The light emitting module 500 includes three colors of light emitting chips, which are a first color light emitting chip 510, a second color light emitting chip 520, and a third color light emitting chip 530.

[0087] Figure 6 The first color light emitting chip 510 is an R light emitting chip, the second color light emitting chip 520 is a G light emitting chip, and the third color light emitting chip 530 is a B light emitting chip. Figure 6 The structure shown does not limit the present embodiment. The first color light emitting chip 510 can be a G light emitting chip, the second color light emitting chip 520 can be an R light emitting chip, and the third color light emitting chip 530 can be a B light emitting chip. The first color light emitting chip 510 can be a B light emitting chip, the second color light emitting chip 520 can be a G light emitting chip, and the third color light emitting chip 530 can be an R light emitting chip. The present embodiment does not make too many limitations on the first color, the second color, and the third color.

[0088] For example, the light emitting module 500 can also include not only three colors of light emitting chips, but also four colors of light emitting chips, five colors of light emitting chips. The present embodiment does not make limitations. The three colors of light emitting chips can not be R light emitting chips, B light emitting chips, and G light emitting chips, but can be other combinations of light emitting chips that can display white light. Optionally, the light emitting chips can be, for example, yellow light emitting chips, purple light emitting chips, white light emitting chips, orange light emitting chips, etc.

[0089] The number of each color of light emitting chip in the light emitting module 500 can be set according to actual needs, and the present embodiment does not make limitations. The number of different colors of light emitting chips can be the same or different, and the present embodiment does not make limitations.

[0090] In some embodiments, referring to Figure 6 FIG. 5 shows a structural schematic diagram of a light emitting module 500. The light emitting module 500 includes three colors of light emitting chips, which are a first color light emitting chip 510, a second color light emitting chip 520, and a third color light emitting chip 530.

[0091] The second color light emitting chip 520 and the third color light emitting chip 530 are arranged on a circumference with a center of a preset region as a center, and the preset region is in a region formed around the circumference. The first color light emitting chip 510 is arranged in the preset region. The preset region can be a region A as shown in Figure 6 The preset region can be a circular region, a polygonal region, and the embodiment is not limited. The area and position of the preset region can be set according to actual needs, and the embodiment is not limited.

[0092] In a case where the light emitting module 500 contains one first color light emitting chip 510, the preset region can be understood as a circular region with a geometric center of the first color light emitting chip 510 as a center. Please refer to a structure schematic diagram of the light emitting module 500 as shown in Figure 7 In a case where the light emitting module 500 contains one first color light emitting chip 510, the geometric center of the first color light emitting chip 510 is point B. The second color light emitting chip 520 and the third color light emitting chip 530 are arranged on a circumference with point B as a geometric center.

[0093] In a case where the light emitting module 500 contains multiple first color light emitting chips 510, the preset region can be understood as a region formed around the multiple first color light emitting chips 510. Please refer to a structure schematic diagram of the light emitting module 500 as shown in Figure 6 In a case where the light emitting module 500 contains multiple first color light emitting chips 510, the preset region can be understood as a region formed around the multiple first color light emitting chips 510. Please refer to a structure schematic diagram of the light emitting module 500 as shown in

[0094] It should be noted that the circumference can be understood as an annular shape, that is, the circumference can not be a circumference corresponding to a regular circle. For example Figure 8 As shown in a structure schematic diagram of the light emitting module 500, the second color light emitting chip 520 and the third color light emitting chip 530 are arranged on a circumference corresponding to a non-regular circle. Preferably, the circumference can be a circumference corresponding to a regular circle as shown in Figure 6

[0095] In some embodiments, at least part of the second color light emitting chips 520 and the third color light emitting chips 530 arranged on the circumference are alternately arranged between the second color light emitting chips 520 and the third color light emitting chips 530. For example Figure 6 As shown in a structure schematic diagram of the light emitting module 500, part of the second color light emitting chips 520 arranged on the circumference are adjacent to the third color light emitting chips 530. For example Figure 7 ​As shown, the light emitting chips adjacent to the second color light emitting chips 520 arranged on the circumference are all third color light emitting chips 530.

[0096] Preferably, the second color light emitting chips 520 and the third color light emitting chips 530 arranged on the circumference are alternately arranged, that is, as shown in the following figure. Figure 7 As shown, the light emitting chips adjacent to the second color light emitting chips 520 arranged on the circumference are all third color light emitting chips 530, and the light emitting chips adjacent to the third color light emitting chips 530 arranged on the circumference are all second color light emitting chips 520.

[0097] The above embodiment makes the relative distance between two color light emitting chips randomly combined in the three color light emitting chips within a certain range, solving the color separation problem in the related art due to the two color light emitting chips being spaced by another color light emitting chip and the two color light emitting chips being far apart. And the area of the light emitting overlapping region after the first color light emitting chip 510, the second color light emitting chip 520 and the third color light emitting chip 530 emit light is larger. The overlapping region displays white light, and the larger the overlapping region, the better the white light display effect. Therefore, compared with the light emitting module in the related art, the light emitting module 500 provided by the embodiment can solve the color separation problem, better display white light, and improve the light emitting effect of the color backlight.

[0098] In some embodiments, the number of light emitting chips is negatively correlated with the driving voltage of the light emitting chips. That is, the greater the driving voltage of the light emitting chips, the fewer the number of light emitting chips required. Conversely, the smaller the driving voltage of the light emitting chips, the greater the number of light emitting chips required to be arranged in the light emitting module 500.

[0099] Assuming that the driving voltage of the second color light emitting chip 520 is greater than the driving voltage of the third color light emitting chip 530, the number of second color light emitting chips 520 is less than the number of third color light emitting chips 530. Assuming that the driving voltage of the first color light emitting chip 510 is greater than the driving voltage of the second color light emitting chip 520, the number of first color light emitting chips 510 needs to be less than the number of second color light emitting chips 520.

[0100] Please refer to Figure 9 As shown in the structural schematic diagram of the light emitting module 500. The first color light emitting chip 510 is a red light emitting chip, the second color light emitting chip 520 and the third color light emitting chip 530 are green light emitting chips and blue light emitting chips respectively, the number of red light emitting chips is 4, and the number of green light emitting chips and blue light emitting chips is 3.

[0101] It should be noted that the same color light emitting chips in the light emitting module 500 are connected in series to form a link, and the light emitting chips in the link can emit light after being driven by a voltage. There are three links corresponding to three different colors of light emitting chips in the light emitting module 500. In the process of driving light emission, since the driving voltages of light emitting chips of different colors are different, if the same voltage is used to drive the three links, some light emitting chips of certain colors will emit light faster. And with the passage of time, the light emitting brightness of the light emitting chips of some colors will be stronger. Then, the light emitting module 500 will have the problem of large difference in light emitting brightness of each light emitting chip. And the embodiment can solve the problem of large difference in light emitting brightness of each light emitting chip in the light emitting module 500 by limiting the negative correlation between the number of light emitting chips and the driving voltage of the light emitting chips, so as to avoid the problem of some light emitting chips of certain colors emitting light faster after the same voltage is used to drive the three links. Figure 9 In the example shown, the link corresponding to the R light emitting chip needs to be driven by 8V, and the links corresponding to the G light emitting chip and the B light emitting chip need to be driven by 9V. Then, 9V is used to drive the three links, because the number of R light emitting chips is increased and the time difference of three color light emitting chips entering the light emitting area is reduced, the problem of large difference in light emitting brightness of each light emitting chip is solved.

[0102] In some embodiments, the second color light emitting chip 520 and the third color light emitting chip 530 adjacent to each other are connected to form a regular polygon in shape, and the second color light emitting chip 520 and the third color light emitting chip 530 are both arranged based on the vertex of the regular polygon. That is to say, the distance between every two adjacent light emitting chips arranged on the circle is equal, and they are uniformly distributed. In this way, the problem of color separation caused by too large distance difference is avoided.

[0103] The regular polygon can be a regular quadrilateral, a regular hexagon or a regular octagon. In the case of a regular quadrilateral, the second color light emitting chip 520 and the third color light emitting chip 530 are alternately arranged to reduce the problem of color separation. The number of first color light emitting chips 510 in the preset area can be set according to actual needs, which is not limited in the embodiment. In the case of a regular hexagon, some second color light emitting chips 520 and third color light emitting chips 530 can be alternately arranged to reduce the problem of color separation. The number of first color light emitting chips 510 in the preset area can be set according to actual needs, which is not limited in the embodiment. In the case of a regular octagon, some second color light emitting chips 520 and third color light emitting chips 530 can be alternately arranged to reduce the problem of color separation. The number of first color light emitting chips 510 in the preset area can be set according to actual needs, which is not limited in the embodiment.

[0104] AsFigure 10 The schematic diagram shows a regular quadrilateral structure where the second-color light-emitting chip 520 and the third-color light-emitting chip 530 are alternately arranged. The two second-color light-emitting chips 520 and the two third-color light-emitting chips 530 are symmetrically distributed to reduce color separation issues. The number of first-color light-emitting chips 510 can be one, as shown in the diagram. Figure 10 In the structure shown, the first distance between the first color light-emitting chip 510 and the second color light-emitting chip 520 is equal to the second distance between the first color light-emitting chip 510 and the third color light-emitting chip. Thus, during light emission, the overlapping areas of the three colors (e.g., ...) Figure 10 The four shaded areas shown are symmetrically distributed to further enhance the luminous effect.

[0105] like Figure 11 The schematic diagram shows a hexagonal structure where the second-color light-emitting chip 520 and the third-color light-emitting chip 530 are alternately arranged. The number of first-color light-emitting chips 510 can be three, as shown in the diagram. Figure 11 In the structure shown, the lines connecting the first color light-emitting chips 510 can form an equilateral triangle to present a more uniform first color. The first distance between the first color light-emitting chip 510 and its nearest second color light-emitting chip 520 can be equal to the second distance between the first color light-emitting chip 510 and its nearest third color light-emitting chip 530 to solve the color separation problem. More preferably, the third distance between the second color light-emitting chip 520 and its circumferentially adjacent third color light-emitting chip 530 can be equal to the first distance or the second distance to solve the color separation problem.

[0106] like Figure 12 The schematic diagram shows a regular octagonal structure where the second-color light-emitting chip 520 and the third-color light-emitting chip 530 are alternately arranged. The number of first-color light-emitting chips 510 can be four, as shown in the diagram. Figure 12 In the structure shown, the lines connecting the first color light-emitting chips 510 can form a regular quadrilateral to present a more uniform first color. The first distance between the first color light-emitting chip 510 and its nearest second color light-emitting chip 520 can be equal to the second distance between the first color light-emitting chip 510 and its nearest third color light-emitting chip 530 to solve the color separation problem. More preferably, the third distance between the second color light-emitting chip 520 and its circumferentially adjacent third color light-emitting chip 530 can be equal to the first distance or the second distance to solve the color separation problem.

[0107] In some embodiments, the outer contour of the shape formed by the connection of the same color light emitting chips is a regular polygon. The outer contour of the shape formed by the connection of the adjacent second color light emitting chip 520 and the third color light emitting chip 530 is not a regular polygon. Please refer to Figure 13 , the outer contour of the shape formed by the connection of the second color light emitting chip 520 is a regular triangle, the outer contour of the shape formed by the connection of the third color light emitting chip 530 is a regular triangle, and the outer contour of the shape formed by the connection of the first color light emitting chip 510 is a regular quadrilateral.

[0108] In some embodiments, please refer to Figures 10-13 Any of them, the area enclosed by the outer contour of the shape formed by the connection of the second color light emitting chip 520 is a first area, and the area enclosed by the outer contour of the shape formed by the connection of the third color light emitting chip 530 is a second area. The preset area is the intersection area of the first area and the second area. The first color light emitting chip 510 is arranged in the preset area.

[0109] Since the first color chip is arranged in the preset area, and the preset area is the intersection area of the first area and the second area, the arrangement of the first color light emitting chip 510, the second color light emitting chip 520 and the second color light emitting chip 520 will not be approximately a straight line, avoiding the problem of color separation caused by the distance being too far apart after being separated by a certain color.

[0110] In some embodiments, please refer to Figure 7 The number of the first color light emitting chip 510 is 1, and the number of the second color light emitting chip 520 and the third color light emitting chip 530 is not less than 2.

[0111] In some embodiments, please refer to Figure 6 , Figure 8 , Figure 9 and Figure 11 Any of them, the number of the first color light emitting chip 510, the second color light emitting chip 520 and the third color light emitting chip 530 is 3.

[0112] In some embodiments, please refer to Figure 13 The multiple light emitting chips of the same color are connected in a single-wire series connection mode to form an electrical connection 540. The electrical connection 540 includes an input electrical connection 541 and an output electrical connection 542.

[0113] The input terminal of input line 541 can be understood as the positive input terminal, used to receive the externally transmitted driving voltage. The output terminal of input line 541 is connected to the first LED in a series connection of multiple LEDs. The input terminal of output line 542 is connected to the last LED in a series connection of multiple LEDs. The output terminal of output line 542 can be understood as the negative output terminal, used to output the driving voltage.

[0114] Figure 13 The first color shown is red. In the electrical connection 540 of the first color light-emitting chip 510, the input end of the input electrical connection 541 is marked with R+, and the output end of the output electrical connection 542 is marked with R-. Figure 13 The second color shown is green. In the electrical connection 540 of the second color light-emitting chip 520, the input end of the input electrical connection 541 is marked with G+, and the output end of the output electrical connection 542 is marked with G-. Figure 13 The third color shown is blue. In the electrical connection 540 of the third color light-emitting chip 530, the input terminal of the input electrical connection 541 is marked with B+, and the output terminal of the output electrical connection 542 is marked with B-.

[0115] In some embodiments, please refer to Figure 13 The wiring diagram shown illustrates that the electrical connections 540 corresponding to different colored LED chips do not cross. In practical applications, the substrate used to mount the LED module 500 is a single-sided board, and the electrical connections 540 corresponding to different colored LED chips do not cross, which is beneficial for single-layer wiring.

[0116] In some embodiments, please refer to Figure 13 There is a spacing between at least two adjacent light-emitting chips on the circumference that allows the input electrical connection 541 and the output electrical connection 542 of the electrical connection 540 corresponding to the first color light-emitting chip 510 to pass through. The spacing between the other two adjacent light-emitting chips on the circumference can be as close as possible to reduce the area of ​​the light-emitting module 500 and save resources.

[0117] In some embodiments, please refer to Figure 14 The diagram shows the structure of the light-emitting module 500. There is one first-color light-emitting chip 510, and this first-color light-emitting chip 510 is synthesized from multiple first-color light-emitting sub-chips. In other words, when there are multiple first-color light-emitting sub-chips, these multiple first-color light-emitting sub-chips can be combined into a larger single chip, thereby reducing the number of light-emitting chips and saving resources.

[0118] In some embodiments, please refer to Figure 15The structure of the light-emitting module is shown. The first color light-emitting chip 510 is arranged on the circumference with the center of the preset area as the center, and the preset area is in the area formed around the circumference. The second color light-emitting chip 520 and the third color light-emitting chip 530 are arranged in the preset area.

[0119] Due to slight differences in the manufacturing process, the color coordinates (i.e. color coordinates, usually represented by X and Y values of CIE1931 color coordinate system) of the light-emitting chip may have certain dispersion. This dispersion may cause color separation problems in the X and Y directions of the light-emitting chip, i.e. adjacent light-emitting chips may exhibit obvious color difference, forming color blocks or color bands, affecting the overall visual effect of the display screen. To solve the color separation problem in the X and Y directions, two different color light-emitting chips are arranged in the central area, and another color light-emitting chip is arranged on both sides.

[0120] In addition, in the RGB display screen, R light-emitting chips, G light-emitting chips and B light-emitting chips produce various colors by mixing colors. If the distance between any two of the R light-emitting chips, G light-emitting chips and B light-emitting chips is too large, obvious color blocks or color bands may be formed on the display screen. Therefore, in the RGB arrangement, the G light-emitting chip is arranged on the circumference, and the B light-emitting chip and the R light-emitting chip are arranged in the preset area formed by the circumference, so that adjacent light-emitting chips can mix the required colors more uniformly, which helps to optimize the color mixing effect, has no obvious boundary in vision, presents a more smooth and uniform color transition, and reduces color separation.

[0121] The first color light-emitting chip 510 is a G light-emitting chip, the second color light-emitting chip 520 is an R light-emitting chip, and the third color light-emitting chip 530 is a B light-emitting chip. The first color light-emitting chip 510 can also be a B light-emitting chip, the second color light-emitting chip 520 is an R light-emitting chip, and the third color light-emitting chip 530 is a G light-emitting chip.

[0122] In some embodiments, referring to FIG. 16(a), the line connecting the center of the second color light-emitting chip 520 and the center of the third color light-emitting chip 530 is a reference line (as shown by the dashed line), and the first color light-emitting chip 510 is arranged on both sides of the reference line. The first color light-emitting chip 510 is preferably a G light-emitting chip. The vertical distance between each G light-emitting chip and the reference line can be equal, and the distance between each G light-emitting chip is within a certain range, so as to realize more uniform distribution of G light-emitting chips, which is more helpful to optimize the color mixing effect.

[0123] In some embodiments, referring to FIG. 16(b), the perpendicular line of the line connecting the center of the second color light emitting chip 520 and the center of the third color light emitting chip 530 is the reference line (as shown by the dotted line), and the first color light emitting chip 510 is arranged on both sides of the reference line. The first color light emitting chip 510 is preferably a G light emitting chip. The vertical distance between each G light emitting chip and the reference line is equal, and the distance between each G light emitting chip is within a certain range to achieve a more uniform distribution of G light emitting chips, which is more conducive to optimizing the color mixing effect.

[0124] In some embodiments, referring to FIG. 17(a), the first color light emitting chip 510 is symmetrically arranged along the reference line. Referring to FIG. 17 (the "m" shape in the figure represents the cross-sectional view of the reflective lens), in the case of matching lenses and when the lens is a reflective lens, the light emitting chip in the middle color will disperse to the four corners due to its proximity to the center, and more light will be reflected. The light emitting chip on the periphery will not be in the center, so less light will be reflected. Therefore, the lamps on the periphery need to be symmetrically distributed to make the light reflected by the lamps on the periphery more and symmetrically, which is more conducive to the color mixing design.

[0125] In some embodiments, referring to FIG. 17(a), the first color light emitting chip 510 is symmetrically arranged along the reference line. Referring to FIG. 17 (the "m" shape in the figure represents the cross-sectional view of the reflective lens), in the case of matching lenses and when the lens is a reflective lens, the light emitting chip in the middle color will disperse to the four corners due to its proximity to the center, and more light will be reflected. The light emitting chip on the periphery will not be in the center, so less light will be reflected. Therefore, the lamps on the periphery need to be symmetrically distributed to make the light reflected by the lamps on the periphery more and symmetrically, which is more conducive to the color mixing design. Figure 18 In some embodiments, referring to FIG. 17(a), the first color light emitting chip 510 is symmetrically arranged along the reference line. Referring to FIG. 17 (the "m" shape in the figure represents the cross-sectional view of the reflective lens), in the case of matching lenses and when the lens is a reflective lens, the light emitting chip in the middle color will disperse to the four corners due to its proximity to the center, and more light will be reflected. The light emitting chip on the periphery will not be in the center, so less light will be reflected. Therefore, the lamps on the periphery need to be symmetrically distributed to make the light reflected by the lamps on the periphery more and symmetrically, which is more conducive to the color mixing design.

[0126] In some embodiments, the fluorescent powder is used to make the second color light emitting chip 520 emit a third color band. The second color light emitting chip 520 is a B light emitting chip, and the third color band is a red color band. Because the blue light has the highest photoelectric conversion efficiency, the blue light is preferentially converted to red light by the fluorescent powder. When considering reducing the red component, a light source with an RGB+red KSF fluorescent powder architecture can be used. The KSF fluorescent powder excitation spectrum covers the range of 300~500nm, especially with double absorption peaks near 355nm and 450nm, which has excellent compatibility with mainstream B light emitting chips and is suitable for various packaging schemes, such as Mini LED backlight. In this case, due to the addition of KSF fluorescent powder, the blue and red colors have a certain expansion effect on the light mixing, which can reduce the color separation phenomenon under the application of the lens.

[0127] In some embodiments, the number of first-color light-emitting chips 510 is two, and the number of second-color light-emitting chips 520 and third-color light-emitting chips 530 is one each. The first-color light-emitting chip 510 is preferably a G-type light-emitting chip. Using blue and red in the middle and green on both sides can greatly reduce color separation phenomena in lens applications. Furthermore, since the number of light-emitting chips is different, to solve the voltage matching problem, the voltage of the B-type light-emitting chip can be twice the voltage of the G-type light-emitting chip.

[0128] In some embodiments, when using lenses, the intermediate color light-emitting chips can be integrated into one, which is beneficial for process development and cost reduction.

[0129] In some embodiments, the outer contour of the shape formed by connecting the first color light-emitting chips 510 is a regular polygon; and the first color light-emitting chips 510 are set based on the vertices of the regular polygon. For a description of how the light-emitting chips form a regular polygon, please refer to the above-mentioned description, which will not be repeated here.

[0130] Some embodiments of this application also provide a light panel 508, which includes LED chips. The LED chips include at least one light-emitting module 500 as provided in any of the preceding embodiments. More specifically, the light-emitting module 500 can be mounted on a base plate of the LED chips.

[0131] Some embodiments of this application also provide a backlight assembly 220, which includes at least one light-emitting module 500 as provided in any of the preceding embodiments.

[0132] Some embodiments of this application also provide a display device 200, which includes the light-emitting module 500 as provided in the previous embodiment.

[0133] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0134] The above embodiments are merely illustrative of several implementation methods of this application, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A light emitting module, characterized by Comprising: a first color light emitting chip, a second color light emitting chip and a third color light emitting chip; the first color light emitting chip is arranged on a circumference with a center of a preset area as a center, the preset area is in an area formed by the circumference; the second color light emitting chip and the third color light emitting chip are arranged in the preset area.

2. The light emitting module of claim 1, wherein, a line connecting the center of the second color light emitting chip and the center of the third color light emitting chip is a reference line, the first color light emitting chip is arranged on both sides of the reference line; or, a perpendicular line of the line connecting the center of the second color light emitting chip and the center of the third color light emitting chip is a reference line, the first color light emitting chip is arranged on both sides of the reference line.

3. The light emitting module of claim 2, wherein, the first color light emitting chip is symmetrically arranged along the reference line.

4. The light emitting module according to any one of claims 1 to 3, characterized in that, the color light emitting chip is coated with fluorescent powder.

5. The light emitting module of claim 4, wherein, the fluorescent powder is used to make the second color light emitting chip emit a third color wave band.

6. The light emitting module of any one of claims 1 to 3, wherein, the number of the first color light emitting chip is 2, and the number of the second color light emitting chip and the third color light emitting chip is 1 respectively.

7. The light emitting module of any one of claims 1-3, wherein, the outer contour of the shape formed after the first color light emitting chip is connected is a regular polygon; and the first color light emitting chip is arranged based on the vertex of the regular polygon.

8. The light emitting module of any one of claims 1-3, wherein, the multiple light emitting chips of the same color are connected in a single line series mode to form an electrical connection; the electrical connections of the light emitting chips of different colors do not cross.

9. A light panel characterized by comprising a lamp bead; the lamp bead comprises at least one light emitting module as claimed in any one of claims 1-8.

10. A display device, characterized by comprising at least one light emitting module as claimed in any one of claims 1-8.

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