Display module

Abstract

The utility model relates to a display module which comprises a lamp bead body, at least two anode bonding pads are arranged on the lamp bead body, at least three light-emitting chips are installed on the lamp bead body, the anode of one light-emitting chip is electrically connected to one anode bonding pad, and the anodes of the other at least two light-emitting chips are electrically connected to the other anode bonding pad; the lamp bead body is covered with the face mask, a gap is formed between the face mask and the lamp bead body and comprises an inclined section, and the inclined section obliquely extends in the direction away from the light emitting face and the lamp bead body from the light emitting face of the lamp bead body. The light-emitting chips with consistent voltage requirements are electrically connected to the same anode bonding pad, and the light-emitting chips with inconsistent voltage requirements are electrically connected to different anode bonding pads, so that the light-emitting chips are independently supplied with power, and the electric quantity loss is reduced; the gap is arranged to obliquely extend, so that the front contrast and the display effect can be improved, and the problems of large electric quantity loss and reduction of the front contrast and the display effect by a vertical gap are solved.

Description

Technical Field

[0001] The present application relates to the field of LED display technology, and in particular to a display module. Background Art

[0002] At present, LED lighting has penetrated into various scenarios where people need light in their lives. As a result, people have higher requirements for the light quality of LED light sources, as well as the continuous improvement of product reliability and lifespan.

[0003] In the related technology, LED display screens generally use LED lamp beads, especially RGB lamp beads. Among the conventional common anode RGB lamp beads on the market (such as Figure 1 The circuit structure shown in the figure shows that the voltage of the red LED chip is about 2.8V, and the voltage of the green LED chip and the blue LED chip is about 3.8V. Due to structural design reasons, the common anode technology LED display usually supplies a voltage higher than 3.8V to the RGB three-color chips, resulting in large power loss. Since the voltage of the red LED chip only needs 2.8V, the unified voltage of 3.8V will have excess loss, which will be dissipated in the form of heat.

[0004] Therefore, it is necessary to design a new display module to overcome the above problems. Utility Model Content

[0005] The present application provides a display module that can solve the technical problem of large power consumption in related technologies.

[0006] In a first aspect, an embodiment of the present application provides a display module, comprising: a lamp bead body, the lamp bead body being provided with at least two anode pads, and the lamp bead body being installed with at least three light-emitting chips, wherein the anode of one of the light-emitting chips is electrically connected to one of the anode pads, and the anodes of at least two other light-emitting chips are electrically connected to another anode pad; a mask, the mask being arranged outside the lamp bead body, and a gap is formed between the mask and the lamp bead body, the gap comprising an inclined section, and the inclined section extends obliquely from the light-emitting surface of the lamp bead body toward a direction away from the light-emitting surface and away from the lamp bead body.

[0007] In combination with the first aspect, in one embodiment, at least three of the light-emitting chips include a red light chip, a blue light chip and a green light chip, the anode of the red light chip is electrically connected to one of the anode pads; the anodes of the blue light chip and the green light chip are electrically connected to another anode pad.

[0008] In combination with the first aspect, in one embodiment, the lamp bead body is provided with two anode pads and three light-emitting chips; the lamp bead body is also provided with two anode pins and three cathode pins, each anode pad is electrically connected to an anode pin, and the cathode of each light-emitting chip is electrically connected to a cathode pin.

[0009] In combination with the first aspect, in one implementation, the lamp bead body is further provided with an empty pin, and the empty pin is symmetrically distributed on the lamp bead body with the two anode pins and the three cathode pins.

[0010] In combination with the first aspect, in one implementation, the gap is filled with colloid, and at least part of the inclined section is not filled with colloid, so that a gap is formed between the colloid in the gap and the light emitting surface.

[0011] In combination with the first aspect, in one embodiment, a first inclined surface is formed outside the lamp bead body, and a second inclined surface is formed inside the mask. The second inclined surface has the same inclination direction as the first inclined surface, and the inclined section is formed between the first inclined surface and the second inclined surface.

[0012] In combination with the first aspect, in one implementation, the first inclined surface is arranged in parallel with the second inclined surface.

[0013] In combination with the first aspect, in an implementation manner, the gap further includes a vertical segment, the vertical segment is connected to the inclined segment, and relative to the inclined segment, the vertical segment is biased away from the light emitting surface.

[0014] In combination with the first aspect, in one embodiment, the vertical section is filled with colloid, and at least a portion of the colloid extends into the inclined section.

[0015] In a second aspect, an embodiment of the present application provides a lamp bead, comprising: a lamp bead body, wherein the lamp bead body is provided with at least two anode pads, and the lamp bead body is installed with at least three light-emitting chips, wherein the anode of one of the light-emitting chips is electrically connected to one of the anode pads, and the anodes of at least two other light-emitting chips are electrically connected to another anode pad.

[0016] In a third aspect, an embodiment of the present application provides a display module, which includes a plurality of the above-mentioned lamp beads.

[0017] The beneficial effects brought by the technical solution provided in the embodiments of the present application include:

[0018] By electrically connecting the anodes of the light-emitting chips with consistent voltage requirements to the same anode pad, and electrically connecting the anodes of the light-emitting chips with inconsistent voltage requirements to different anode pads, the light-emitting chips with different voltage requirements can be powered separately, which can reduce power loss and solve the technical problem of large power loss in related technologies; and the gap between the mask and the lamp bead body is set to extend obliquely. When viewed in a direction perpendicular to the light-emitting surface (that is, viewed from the front), the structure displayed in the gap is the appearance of the lamp bead body, rather than a complete gap, which can improve the front contrast and display effect, and solves the technical problem of vertical gaps reducing the front contrast and display effect in related technologies. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a circuit structure diagram of a conventional common anode RGB lamp bead in the related art;

[0021] Figure 2 A schematic top view of a lamp bead provided in an embodiment of the present application;

[0022] Figure 3 A schematic cross-sectional view of a display module provided in an embodiment of the present application;

[0023] Figure 4 A schematic diagram of the structure of the solder pad on the lamp bead body provided in the embodiment of the present application;

[0024] Figure 5 A schematic diagram of the structure of the pins on the lamp bead body provided in the embodiment of the present application;

[0025] Figure 6 This is a circuit connection structure diagram of the light-emitting chip provided in an embodiment of the present application.

[0026] In the figure:

[0027] 1. Lamp bead body; 11. Light emitting surface; 12. First inclined surface; 2. Anode pad; 3. Cathode pad;

[0028] 4. Light-emitting chip; 5. Mask; 51. Second inclined surface;

[0029] 6. gap; 61. inclined section; 62. vertical section;

[0030] 7. Anode pin; 8. Cathode pin; 9. Colloid. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] The embodiment of the present application provides a display module, which can solve the technical problems in the related art that power consumption is large and vertical gaps reduce front contrast and display effects.

[0033] See also Figure 2 As shown, a display module provided by an embodiment of the present application may include: a lamp bead body 1, wherein the lamp bead body 1 is provided with at least two anode pads 2, and the lamp bead body 1 is installed with at least three light-emitting chips 4, wherein the anode of one of the light-emitting chips 4 is electrically connected to one of the anode pads 2, and the anodes of the other at least two light-emitting chips 4 are electrically connected to another anode pad 2; a mask 5, wherein the mask 5 is provided outside the lamp bead body 1, and a gap 6 is formed between the mask 5 and the lamp bead body 1 (see Figure 3 As shown in the figure, the gap 6 includes an inclined section 61, and the inclined section 61 extends obliquely from the light-emitting surface 11 of the lamp bead body 1 toward a direction away from the light-emitting surface 11 and away from the lamp bead body 1. Among them, the light-emitting surface 11 is the upper surface of the lamp bead body 1, and the inclined section 61 here can be understood as extending downward and outward from the upper surface of the lamp bead body 1. If you look from the bottom to the top, that is, the lamp bead body 1 is set as a narrow cup mouth, and the gap 6 gradually shrinks from the bottom to the top toward the center of the lamp bead body 1. The lamp bead body 1 and the components on the lamp bead body 1 in this embodiment are combined to form a lamp bead, and the gap 6 is formed between the lamp bead and the mask 5.

[0034] In this embodiment, when three light-emitting chips 4 are arranged on the lamp bead body 1, two anode pads 2 can be arranged. When there are more than three light-emitting chips 4 on the lamp bead body 1, the number of anode pads 2 can be appropriately increased according to demand. There is no restriction on the number of light-emitting chips 4 and anode pads 2, and two adjacent anode pads 2 are arranged at intervals. The lamp bead body 1 and the mask 5 can both be injection molded by injection molds, and the lamp bead body 1 and the mask 5 can both be black to improve the contrast.

[0035] In this embodiment, the anodes of the light-emitting chips 4 with consistent voltage requirements are electrically connected to the same anode pad 2. For example, the anodes of the blue light chip and the green light chip can be electrically connected to the same anode pad 2, and the anodes of the light-emitting chips 4 with inconsistent voltage requirements are electrically connected to different anode pads 2. For example, the anode of the red light chip is electrically connected to another anode pad 2, so that the R / GB chip is electrically connected to different anode pads 2, thereby realizing separate power supply for the light-emitting chips 4 with different voltage requirements. The red light chip can be given a voltage of 2.8V, and the blue-green chips can be given a voltage of 3.8V. There will be no surplus loss in the voltage of the red light chip, which can reduce power loss and solve the technical problem of large power loss in related technologies.

[0036] In the related art, a mask needs to be set outside the LED lamp bead at the application end. Because the mask and the LED lamp bead need to be potted with glue, the mask cannot be well fitted with the LED lamp bead, resulting in a vertical gap between the two. The vertical gap directly affects the product effect, reduces the front contrast, weakens the display effect, and affects the user experience. In this embodiment, the gap 6 between the mask 5 and the lamp bead body 1 is set to extend obliquely, and the opening of the gap 6 on the light-emitting surface 11 is closer to the center of the lamp bead body 1. When looking in the direction perpendicular to the light-emitting surface 11 (that is, looking from the front), the structure displayed in the opening of the gap 6 is the appearance of the lamp bead body 1, rather than the bottom of the gap 6. The outer surface of the lamp bead is viewed from the perspective of the lamp bead body 1 in a completely black state, which can improve the front contrast and display effect, and solve the technical problem of the vertical gap reducing the front contrast and display effect in the related art.

[0037] See also Figure 2 As shown, in one embodiment, at least three of the light-emitting chips 4 include a red chip, a blue chip, and a green chip, and the anode of the red chip is electrically connected to one of the anode pads 2; the anodes of the blue chip and the green chip are electrically connected to another anode pad 2. In this embodiment, it is preferred that the three light-emitting chips 4 are respectively set as a red chip, a blue chip, and a green chip, and the anode of the red chip is electrically connected to one of the anode pads 2, the anodes of the blue chip and the green chip are electrically connected to one of the anode pads 2, and the blue chip and the green chip are designed with a common anode (circuit structure as shown in FIG. Figure 6 As shown in the figure), 3.8V voltage can be provided at the same time, and the red light chip is powered by 2.8V alone. In this way, there is no energy loss, and the red light chip and the blue-green chip can be powered separately.

[0038] Furthermore, since there are many rental channels for outdoor product usage scenarios, the display module may be bumped during transportation and splicing, causing the lamp beads to fall off. Therefore, it is also necessary to increase the thrust of the lamp beads. Figure 2As shown, in one embodiment, the lamp bead body 1 is provided with two anode pads 2 and three light-emitting chips 4; see Figure 5 As shown, the lamp bead body 1 is also provided with two anode pins 7 and three cathode pins 8, each of the anode pads 2 is electrically connected to one anode pin 7, and the cathode of each light-emitting chip 4 is electrically connected to one cathode pin 8. Among them, the anode pin 7 and the cathode pin 8 can be arranged on the back of the lamp bead body 1 to form a five-pin structure on the lamp bead body 1, and the red light and the blue-green light are powered independently, which can reduce the defect of red light energy loss in the common anode design; at the same time, the related art adopts the design of red, green and blue chips with a common anode, the number of pins is 4, and the area of ​​4 pins is 1 square millimeter. In this embodiment, under the same size lamp bead (this solution is generally suitable for small size lamp bead, that is, 2mm*2mm lamp bead), the number of pins is changed to five, and the area of ​​5 pins is 1.098 square millimeters. It can be seen that by adding an extra pin, the tinning thrust can be increased by more than 10%, which not only adapts to the separate power supply mode, but also can further enhance the thrust of the lamp bead. In addition, the five-pin design of this embodiment allows the patch to accurately identify the pins, and can facilitate quick and accurate identification of the corresponding pins. Under the premise that the five-pins can achieve independent power supply, considering the cost and patch issues, it is preferred to set the pins on the lamp bead body 1 to five pins.

[0039] Based on the above technical solution, see Figure 4 As shown, the lamp bead body 1 can also be provided with three cathode pads 3, and the cathodes of the red, green and blue light-emitting chips 4 are electrically connected to the three cathode pads 3 respectively, and each cathode pad 3 is electrically connected to a cathode pin 8, and the cathode pads 3 and the cathode pins 8 are in a one-to-one correspondence.

[0040] Furthermore, in some optional embodiments, the lamp bead body 1 may also be provided with an empty pin, and the empty pin and the two anode pins 7 and the three cathode pins 8 are symmetrically distributed on the lamp bead body 1. In this embodiment, in order to realize the separate lighting of different light-emitting chips 4, at least a five-pin structure is set, that is, two anode pins 7 and three cathode pins 8. Considering the symmetry of the pins, an empty pin may also be added to the lamp bead body 1 to form a six-pin structure.

[0041] See also Figure 3As shown, in one embodiment, the gap 6 can be filled with colloid 9 (i.e., potting glue), and the colloid 9 can fix the lamp bead body 1 and the mask 5 together, and at least part of the inclined section 61 is not filled with colloid 9, so that a gap is formed between the colloid 9 in the gap 6 and the light emitting surface 11. That is to say, in this embodiment, although the gap 6 is filled with colloid 9, the colloid 9 does not fill the gap 6 completely, and the lower part of the gap 6 is filled with colloid 9, and the upper part is empty, so that the connection between the lamp bead body 1 and the mask 5 is ensured, and the position close to the light emitting surface is not filled with colloid 9, and the surrounding area is all black lamp bead body 1, which will not affect the light emitting effect of the light emitting chip 4.

[0042] See also Figure 3 As shown, in some optional embodiments, a first inclined surface 12 is formed outside the lamp bead body 1, and a second inclined surface 51 is formed inside the mask 5, the second inclined surface 51 is in the same inclination direction as the first inclined surface 12, and the inclined section 61 is formed between the first inclined surface 12 and the second inclined surface 51. Among them, the first inclined surface 12 can be parallel to the second inclined surface 51, or it can be non-parallel. When the lamp bead body 1 is formed by injection molding, the inclination angle of the injection mold can be adjusted to increase the inclination angle of the outer wall of the lamp bead body 1, so that the first inclined surface 12 extends from bottom to top toward the center of the lamp bead body 1, reducing the area of ​​the lamp bead body 1 on the light-emitting surface 11, so that the lamp bead body 1 forms a narrow cup mouth, which can greatly improve the brightness of the lamp bead and enhance the display effect; at the same time, the second inclined surface 51 can also extend from bottom to top toward the center of the lamp bead body 1, so that the lamp bead body 1 with a narrow cup mouth can be matched with a special mask 5 to increase the overall contrast. In this embodiment, when the lamp beads form a display module, the design of the mask 5 can improve the surface consistency of the display module and improve the surface blackness.

[0043] Preferably, the first inclined surface 12 is arranged in parallel with the second inclined surface 51. Compared with the non-parallel arrangement of the first inclined surface 12 and the second inclined surface 51, the present embodiment arranges the two to be parallel, which makes it easier for the mask 5 to be inserted between two adjacent lamp bead bodies 1.

[0044] See also Figure 3As shown, in one embodiment, the slit 6 may further include a vertical section 62, the vertical section 62 is connected to the inclined section 61, and relative to the inclined section 61, the vertical section 62 is biased away from the light emitting surface 11. The vertical section 62 extends vertically in the up-down direction, and the inclined section 61 extends obliquely relative to the vertical section 62. At the position where the vertical section 62 is formed, the outer wall surface of the lamp bead body 1 is vertical, and the inner wall surface of the mask 5 is also vertical. Compared with setting the entire slit 6 to be inclined, this embodiment sets a part of the slit 6 as the vertical section 62, which is not only convenient for the manufacture of the lamp bead body 1 and the mask 5, but also shortens the width of the lamp bead body 1 in the horizontal direction, thereby facilitating the reduction of the size of the lamp bead.

[0045] Of course, in other embodiments, the gaps 6 may all be inclined sections 61 , or the gaps 6 may also include structures such as curved sections, which are not limited here.

[0046] For further information, see Figure 3 As shown, the vertical section 62 is filled with colloid 9, and at least part of the colloid 9 extends into the inclined section 61. In this embodiment, the colloid 9 in the vertical section 62 can consolidate the lamp bead body 1 and the mask 5 together, and the lower position in the inclined section 61 can also be filled with colloid 9, and the colloid 9 in the inclined section 61 is connected as a whole with the colloid 9 in the vertical section 62. Since the inclined section 61 extends obliquely relative to the vertical section 62, the colloid 9 in the inclined section 61 also extends obliquely relative to the colloid 9 in the vertical section 62. The inclined colloid 9 and the vertical colloid 9 in the gap 6 can connect the mask 5 to the lamp bead body 1 in different directions, respectively, which can further enhance the connection strength between the mask 5 and the lamp bead body 1.

[0047] Of course, in other embodiments, the colloid 9 may be filled only in the vertical section 62 as required.

[0048] Preferably, the angle between the inclined section 61 and the light emitting surface 11 is in the range of 50° to 75°, that is, the inclination angle of the inclined section 61 relative to the vertical plane is 15° to 40°, preferably 20°. The inclination angle of the outer side of the traditional lamp bead body is only 5° to 10°. Due to the small inclination angle of the cup mouth of the traditional lamp bead body 1 and the vertical design of the inner wall of the mask 5, a vertical gap exists between the lamp bead body 1 and the mask 5 (that is, the gap extends vertically in the up and down direction). When viewed from the front, the bottom surface of the bottom end of the gap 6 can be seen, and the bottom surface material may be exposed, affecting the front display effect.

[0049] See also Figure 2As shown, the embodiment of the present application further provides a lamp bead, which includes: a lamp bead body 1, the lamp bead body 1 is provided with at least two anode pads 2, and the lamp bead body 1 is installed with at least three light-emitting chips 4, wherein the anode of one of the light-emitting chips 4 is electrically connected to one of the anode pads 2, and the anodes of the other at least two light-emitting chips 4 are electrically connected to another anode pad 2. The lamp bead provided in this embodiment can adopt the lamp bead provided in any embodiment of the above-mentioned display module, which will not be repeated here.

[0050] The embodiment of the present application also provides a display module, which includes a plurality of lamp beads, and the lamp beads in this embodiment can be the lamp beads provided in any of the above embodiments, which will not be described in detail here. In addition to the lamp beads, the display module in this embodiment can also include the above-mentioned mask 5, which separates the plurality of lamp beads, and a gap 6 is formed between the mask 5 and the lamp beads.

[0051] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0052] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0053] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A display module, characterized in that: It includes: A lamp bead body (1), the lamp bead body (1) being provided with at least two anode pads (2), and the lamp bead body (1) being mounted with at least three light-emitting chips (4), wherein the anode of one of the light-emitting chips (4) is electrically connected to one of the anode pads (2), and the anodes of at least two other light-emitting chips (4) are electrically connected to another anode pad (2); A face mask (5), the face mask (5) being arranged outside the lamp bead body (1), and a gap (6) being formed between the face mask (5) and the lamp bead body (1), the gap (6) comprising an inclined section (61), and the inclined section (61) extending obliquely from a light emitting surface (11) of the lamp bead body (1) in a direction away from the light emitting surface (11) and away from the lamp bead body (1).

2. The display module according to claim 1, wherein: At least three of the light-emitting chips (4) include a red chip, a blue chip and a green chip, the anode of the red chip is electrically connected to one of the anode pads (2); and the anodes of the blue chip and the green chip are electrically connected to another of the anode pads (2).

3. The display module according to claim 1 or 2, characterized in that: The lamp bead body (1) is provided with two anode pads (2) and three light-emitting chips (4); The lamp bead body (1) is further provided with two anode pins (7) and three cathode pins (8); each anode pad (2) is electrically connected to one anode pin (7), and the cathode of each light-emitting chip (4) is electrically connected to one cathode pin (8).

4. The display module according to claim 3, wherein: The lamp bead body (1) is also provided with an idle pin, and the idle pin, the two anode pins (7) and the three cathode pins (8) are symmetrically distributed on the lamp bead body (1).

5. The display module according to claim 1, wherein: The gap (6) is filled with colloid (9), and at least part of the inclined section (61) is not filled with colloid (9), so that a gap is formed between the colloid (9) in the gap (6) and the light emitting surface (11).

6. The display module according to claim 1, wherein: A first inclined surface (12) is formed outside the lamp bead body (1), and a second inclined surface (51) is formed inside the mask (5); the second inclined surface (51) and the first inclined surface (12) have the same inclination direction, and the inclined section (61) is formed between the first inclined surface (12) and the second inclined surface (51).

7. The display module according to claim 1, wherein: The gap (6) further comprises a vertical section (62), wherein the vertical section (62) is connected to the inclined section (61), and relative to the inclined section (61), the vertical section (62) is biased away from the light emitting surface (11).

8. The display module according to claim 7, wherein: The vertical section (62) is filled with colloid (9), and at least a portion of the colloid (9) extends into the inclined section (61).

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