Lamp bead device and grating display screen thereof

Abstract

The utility model relates to a lamp bead device and a grating display screen thereof, and the lamp bead device comprises a bonding pad, a first plate surface of the bonding pad is provided with a plurality of chip sets with different light emitting colors, and each chip set comprises a plurality of chips which are arranged in parallel and have the same light emitting color; the chip sets are arranged at intervals in the first direction, the chips in each chip set extend in the second direction, and the first direction is perpendicular to the second direction. According to the utility model, the plurality of chips of the same chip group are arranged in parallel, when one chip breaks down, all voltage is led to other chips connected with the chip in parallel, the whole lamp bead device does not break down, and the parallel design can effectively improve the brightness of the lamp bead device; and a plurality of lamp bead devices are arranged on the lamp strips, so that the display effect of the grating screen can be improved.

Description

Technical Field

[0001] The present application relates to the field of grid screen display technology, and in particular to a lamp bead device and a grid display screen thereof. Background Art

[0002] Grille screens are a new type of transparent LED display that has emerged in recent years. They are formed of light strips in a grid-like pattern, hence the name grille screen. They are also known as light strip screens or strip curtain screens. Grille screens are widely used in various commercial displays and advertising applications, primarily in shopping malls and outdoors.

[0003] Grille screens for outdoor commercial use require high brightness and contrast, so each light strip is best controlled independently to save power consumption. After the brightness of existing chips reaches saturation current, it is difficult to increase the brightness. In addition, the characteristic of grille screens is that the higher the light transmittance, the better the display effect. Therefore, it is urgent to propose a grille screen that can meet the above requirements at the same time in order to meet market demand. Utility Model Content

[0004] The present application provides a lamp bead device and a grille display screen thereof, which can solve the problem of poor display effect of the grille screen in the related art.

[0005] In a first aspect, an embodiment of the present application provides a lamp bead device, which includes: a solder pad, on the first board surface of which a plurality of chip groups with different luminous colors are arranged, each of the chip groups includes a plurality of chips arranged in parallel and having the same luminous color; the plurality of chip groups are arranged at intervals along a first direction, and the chips in each chip group extend along a second direction, and the first direction is perpendicular to the second direction.

[0006] In one embodiment, the chips in each of the chipsets are spaced apart along the second direction;

[0007] A plurality of conductive member groups, the same number as the chip groups, are arranged on the pad, one conductive member group corresponds to one chip group, and each conductive member group includes two conductive members.

[0008] In one embodiment, the two conductive members are respectively disposed in the middle of the corresponding chipset;

[0009] The chips in the same chipset have the same extension direction.

[0010] In one embodiment, the chips in each of the chipsets are spaced apart along a first direction;

[0011] The pad is provided with a plurality of conductive member groups having the same number as the chip groups, one conductive member group corresponds to one chip group, and each conductive member group includes two conductive members, which are respectively provided at two ends of the corresponding chip group.

[0012] In one embodiment, a pin assembly is provided on the second surface of the pad, and the chips in the chip group are electrically connected to the pin assembly.

[0013] In one embodiment, the number of the pin assemblies is the same as that of the chip groups, one pin assembly corresponds to one chip group, and each pin assembly includes two pins;

[0014] The connecting line connected to the first pole of the chips in each chip group is connected to one of the conductive members in the corresponding conductive member group and is electrically connected to one of the pins in the corresponding pin assembly;

[0015] The connecting line connected to the second pole of the chips in each chip group is connected to the other one of the conductive members in the corresponding conductive member group and is electrically connected to the other one of the pins in the corresponding pin assembly;

[0016] Wherein, the polarities of the first pole and the second pole are opposite.

[0017] In one embodiment, in each chip group, the first poles of multiple chips are separately electrically connected to the corresponding pins;

[0018] In each chip group, the second poles of multiple chips are separately electrically connected to the corresponding pins.

[0019] In one embodiment, in each chip group, the first poles of multiple chips are combined and electrically connected to the corresponding pins;

[0020] In each chip group, the second poles of multiple chips are combined and electrically connected to the corresponding pins.

[0021] In a second aspect, an embodiment of the present application provides a grille display screen, which includes: a screen body and a plurality of light bars arranged at intervals along a third direction on the screen body, and a plurality of the above-mentioned lamp bead devices arranged at intervals along a fourth direction are provided on each light bar; wherein, the third direction is perpendicular to the fourth direction; and, the first point distance between the centers of any two adjacent lamp bead devices on each light bar is the same, and the second point distance between the centers of the corresponding two lamp bead devices on any two adjacent light bars is the same, and the first point distance is equal to the second point distance.

[0022] In one embodiment, the length direction of the lamp bead device is the same as the fourth direction, the third direction is the width direction of the screen body, and the fourth direction is the length direction of the screen body;

[0023] Or, the length direction of the lamp bead device is the same as the third direction, the third direction is the width direction of the screen body, and the fourth direction is the length direction of the screen body.

[0024] The beneficial effects brought by the technical solutions provided by the embodiments of the present application include:

[0025] The embodiments of the present application provide a lamp bead device and its grille display screen. A plurality of chips of the same chip set are connected in parallel. When one of the chips fails, the voltage will all be applied to the other chips connected in parallel with it, and there will be no failure for the overall lamp bead device. Moreover, the parallel design can effectively improve the brightness of the lamp bead device. By arranging a plurality of lamp bead devices on the lamp strip, the display effect of the grille screen can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 Schematic diagram of the first board surface structure of the lamp bead device provided by the embodiment of the present application (chip setting method one);

[0028] Figure 2 Front circuit diagram of the pad provided by the embodiment of the present application (chip setting method one);

[0029] Figure 3 Back pin design diagram of the pad provided by the embodiment of the present application (chip setting method one);

[0030] Figure 4 Schematic diagram of the first lamp strip setting method provided by the embodiment of the present application;

[0031] Figure 5 Schematic diagram of the second lamp strip setting method provided by the embodiment of the present application;

[0032] Figure 6 Schematic diagram of the first board surface structure of the lamp bead device provided by the embodiment of the present application (chip setting method two).

[0033] In the figure: 1. Pad; 2. Conductive part; 3. Chip; 4. Pin; 5. Lamp strip. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] In order to enable those skilled in the art to better understand the solution of the present application, the following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of them. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present application.

[0035] See Figures 1 to 6, embodiments of the present application provide a lamp bead device and its grille display screen, which can solve the problem of poor display effect of grille screens in related technologies.

[0036] In a first aspect, embodiments of the present application provide a lamp bead device, which includes: a pad 1, and a plurality of chip groups with different emission colors are arranged on the first surface of the pad 1. Each chip group includes a plurality of chips 3 connected in parallel and having the same emission color; the plurality of chip groups are arranged at intervals along a first direction, and the chips 3 in each chip group extend along a second direction, and the first direction is perpendicular to the second direction.

[0037] In the present application, a plurality of chips 3 in the same chip group are connected in parallel. When one of the chips 3 fails, the voltage will all be applied to other chips 3 connected in parallel with it, and there will be no failure for the overall lamp bead device. Moreover, the parallel design can effectively improve the brightness of the lamp bead device; by arranging a plurality of lamp bead devices on the lamp strip 5, the display effect of the grille screen can be improved.

[0038] Generally speaking, grille screens are mostly rectangular. In the present application, there are various arrangement methods for the chips 3 on the pad 1;

[0039] In some possible embodiments, on the basis that the plurality of chip groups are arranged at intervals along the first direction and the chips 3 in each chip group extend along the second direction, the chips 3 in each chip group are arranged at intervals along the first direction. That is, as Figure 6 shown, the interval setting direction of the chip groups is the same as the interval setting direction of the chips 3.

[0040] In this embodiment, the first direction can be the length direction of the pad 1. At this time, the second direction is the width direction of the pad 1. This setting method is the Figure 6 arrangement method of the chips 3 shown. For example: three chip groups are set, and two chips 3 with the same emission color are set in each chip group, and the three chip groups are set to emit red, green, and blue light respectively. Therefore, in this setting method, the chips 3 from left to right on the pad 1 emit red, red, green, green, blue, and blue light respectively; the first direction can also be the width direction of the pad 1. At this time, the second direction is the length direction of the pad 1. For example: three chip groups are set, and two chips 3 with the same emission color are set in each chip group, and the three chip groups are set to emit red, green, and blue light respectively. Therefore, in this setting method, the chips 3 from top to bottom on the pad 1 emit red, red, green, green, blue, and blue light respectively. Preferably, the first direction is the length direction of the pad 1, and the second direction is the width direction of the pad 1.

[0041] Further, since a pin component is provided on the second surface of the pad 1, the chip 3 in the chip group is electrically connected to the pin component. In this setting method, in order to facilitate wiring, a plurality of conductive component groups equal in number to the chip groups are provided on the pad 1, and the connection lines of the chip groups are connected to the conductive component groups and then connected to the pin component. For example, when three chip groups are provided, three conductive component groups are provided.

[0042] In this embodiment, one conductive component group corresponds to one chip group. Each conductive component group includes two conductive components 2, and the two conductive components 2 are respectively arranged at both ends of the corresponding chip group. That is to say, multiple chips 3 of one chip group are all arranged between the two conductive components 2 of the corresponding conductive component group, and the two conductive components 2 are respectively for connecting the first pole and the second pole of the chip 3, wherein the first pole and the second pole have opposite polarities. Generally, when the first direction is the length direction of the pad 1 and the second direction is the width direction of the pad 1, the two conductive components 2 are respectively arranged at both ends in the width direction of the pad 1 in the corresponding chip group; when the first direction is the width direction of the pad 1 and the second direction is the length direction of the pad 1, the two conductive components 2 are respectively arranged at both ends in the length direction of the pad 1 in the corresponding chip group.

[0043] Since grille screens mostly appear in shopping malls or outdoors, and all pursue extreme display effects, with high requirements for brightness and contrast. In the setting method of this embodiment, although the chips 3 in the chip group are also in parallel design, the arrangement of the chips 3 will cause color deviation in the left and right viewing angles or up and down viewing angles of the screen, so the effect of this design at the user end is not good. In addition, Figure 6 the shown design method will require using more chips 3 for multiple mountings to complete the mounting of the entire rectangular screen when mounting the screen, resulting in low mounting efficiency.

[0044] Therefore, in some other possible embodiments, on the basis that multiple chip groups are arranged at intervals in the first direction and the chips 3 in each chip group extend in the second direction, the chips 3 in each chip group are arranged at intervals in the second direction. That is to say, the direction in which the chips 3 are arranged at intervals is the same as the direction in which the chips 3 extend in length.

[0045] In this embodiment, the first direction can be the width direction of the pad 1. At this time, the second direction is the length direction of the pad 1, that is, as Figure 1The setting method of the chip 3 shown, for example: set three chip groups, each chip group is provided with two chips 3 with the same light-emitting color, and set the three chip groups to emit red, green, and blue light respectively. Therefore, in this setting method, the chips 3 from top to bottom on the left side of the pad 1 emit red, green, and blue light respectively, and the chips 3 from top to bottom on the right side of the pad 1 emit red, green, and blue light respectively; the first direction can also be the length direction of the pad 1. At this time, the second direction is the width direction of the pad 1. For example: set three chip groups, each chip group is provided with two chips 3 with the same light-emitting color, and set the three chip groups to emit red, green, and blue light respectively. Therefore, in this setting method, the chips 3 from left to right on the upper side of the pad 1 emit red, green, and blue light respectively, and the chips 3 from left to right on the lower side of the pad 1 emit red, green, and blue light respectively. Preferably, set the first direction as the width direction of the pad 1 and the second direction as the length direction of the pad 1. Further, in order to ensure that the light-emitting colors on both sides of the pad 1 are consistent, the extension directions of the chips 3 in the same chip group coincide.

[0046] Since a pin assembly is provided on the second surface of the pad 1, the chips 3 in the chip group are electrically connected to the pin assembly. In this setting method, in order to facilitate wiring, a plurality of conductive member groups with the same number as the chip groups are provided on the pad 1, so that the connecting wires of the chip group are connected to the conductive member 2 and connected to the pin assembly. For example, when three chip groups are provided, three conductive member groups are provided.

[0047] In this embodiment, refer to Figure 1 and Figure 2 As shown, one conductive member group corresponds to one chip group. Each conductive member group includes two conductive members 2. The two conductive members 2 are respectively arranged in the middle of the corresponding chip group. The two conductive members 2 are respectively used for connecting the first pole and the second pole of the chip 3, wherein the first pole and the second pole have opposite polarities.

[0048] In this embodiment, taking the first direction as the width direction of the pad 1 and the second direction as the length direction of the pad 1 as an example, three red, green, and blue chips 3 can be seen from both the left and right perspectives, realizing no color deviation in the left and right perspectives. Compared with the vertical arrangement, for a rectangular display screen of the same size, the lamp beads are mounted more quickly and conveniently in the horizontal arrangement.

[0049] The above embodiments are only various possible implementation manners of the embodiments of the present application, and the embodiments of the present application are not limited thereto.

[0050] On the basis of the above embodiments, in this embodiment, a pin assembly is provided on the second surface of the pad 1, and the chips 3 in the chip group are electrically connected to the pin assembly.

[0051] In this embodiment, regardless of the arrangement of the chipset and chip 3, the connection lines of chip 3 are all connected to the conductive member 2 and then to the pin assembly after being connected to the conductive member 2. Moreover, the number of pin assemblies, the number of conductive member groups, and the number of chip groups are the same. That is to say, when three chip groups are set, three conductive member groups are set, and three pin assemblies are also set. In this embodiment, each pin assembly includes two pins 4, and the two pins 4 are electrically connected to the first pole and the second pole of chip 3 respectively. It should be noted that via holes are formed in the pad 1, and the conductive member 2 is a conductive structure installed in the via holes.

[0052] During electrical connection, the connection line connected to the first pole of chip 3 in each chip group is connected to one of the conductive members 2 in the corresponding conductive member group and is electrically connected to one of the pins 4 in the corresponding pin assembly; the connection line connected to the second pole of chip 3 in each chip group is connected to the other conductive member 2 in the corresponding conductive member group and is electrically connected to the other pin 4 in the corresponding pin assembly; among them, the polarities of the first pole and the second pole are opposite.

[0053] In this embodiment, there are various setting methods for the connection lines of chip 3 in the chip group. The following are examples for illustration respectively:

[0054] For example, in each chip group, the first pole connection lines of multiple chips 3 can be separately electrically connected to the corresponding pins 4, and in each chip group, the second pole connection lines of multiple chips 3 can be separately electrically connected to the corresponding pins 4. Refer to Figure 6 the connection method of chip 3 in the chip groups on the left and right sides of the pad 1 shown: Combine the first poles of all chips 3 in the chip group to form a first pole connection end, and then connect the combined first pole connection end to the corresponding pin 4. Combine the second poles of all chips 3 in the chip group to form a second pole connection end, and then connect the combined second pole connection end to the corresponding pin 4.

[0055] It can also be that in each chip group, the first pole connection lines of multiple chips 3 are combined and electrically connected to the corresponding pins 4, and in each chip group, the second pole connection lines of multiple chips 3 are combined and electrically connected to the corresponding pins 4. Refer to Figure 6 the connection method of chip 3 in the middle chip group of the pad 1 shown: That is, the first poles of each chip 3 in the chip group are not combined and connected, but directly connected to the corresponding pins 4, and the second poles of each chip 3 are not combined and connected, but directly connected to the corresponding pins 4.

[0056] During actual use, different connection line setting methods can be selected according to needs. It should be noted that only the above setting methods are used as examples for illustration, and other setting methods can also be selected during actual use.

[0057] In a second aspect, an embodiment of the present application provides a grille display screen, which includes: a screen body and a plurality of light bars 5 arranged at intervals in a third direction on the screen body. A plurality of bead devices provided in any of the above embodiments of the present application are arranged at intervals in a fourth direction on each light bar 5; wherein, the third direction is perpendicular to the fourth direction; and, the first point spacing between the centers of any two adjacent bead devices on each light bar 5 is the same, and the second point spacing between the centers of the corresponding two bead devices on any two adjacent light bars 5 is the same, and the first point spacing is equal to the second point spacing.

[0058] In the present application, the third direction and the fourth direction correspond to the length or width of the screen body, and the first direction and the second direction correspond to the length or width of the pad 1.

[0059] In this embodiment, when the arrangement directions of the bead devices are different, the display effects of the grille screen are also different:

[0060] In one embodiment, refer to Figure 4 As shown, the length direction of the bead device is the same as the fourth direction. In Figure 4 , the third direction is the width direction of the screen body, and the fourth direction is the length direction of the screen body. That is to say, a plurality of light bars 5 are arranged at intervals in the width direction of the screen body, and the bead devices are arranged in the length direction of the screen body. Since in the grille display screen, the point spacing between the center point of any bead device and the center point of the bead device on its left, the point spacing between the center point of the bead device on its right, the point spacing between the center point of the bead device in front of it, and the point spacing between the center point of the bead device behind it should be the same. Therefore, under this condition, when the direction in which the plurality of light bars 5 are arranged at intervals is perpendicular to the length direction of the bead device and the interval arrangement direction of the bead devices, the distance between the light bars 5 ( Figure 4 where X is the distance between the light bars 5 in this embodiment) can be increased. In this way, the gap between the lamp strings can be increased, the light transmittance of the grille screen can be effectively improved, the permeability is better, and the display effect is better.

[0061] In another embodiment, refer to Figure 5 As shown, the direction in which the plurality of light bars 5 are arranged at intervals is the same as the length direction of the bead device. It can be clearly seen that when the second point spacing between the centers of the corresponding two bead devices on two adjacent light bars 5 is determined, since the length direction of the bead device is the same as the direction in which the plurality of light bars 5 are arranged at intervals, the distance between two adjacent light bars 5 ( Figure 5In this embodiment, when the distance Y between the light bars 5 decreases, the light transmittance of the grille screen will decrease; and after the second distance is determined, in order to ensure that the first distance between the centers of two adjacent bead devices in the horizontal direction is the same as the second distance, the distance between two adjacent bead devices in the horizontal direction needs to be increased. Only in this way can the requirement that the first distance is the same as the second distance be met. However, in this case, the exposed area of the light bar 5 increases, and the effect of increasing the light transmittance and improving the display cannot be achieved.

[0062] In summary, in this application, by setting the chips 3 of the chip group in parallel, the display brightness of the display unit can be improved; for the grille display scenario, independent control of the chip group is achieved, and power is supplied as needed, saving power consumption; at the same time, in this application, the pad 1 is provided with a two-layer board, which can achieve the basic function. When a four-layer board is designed, there can be no wiring on the surface, increasing the beauty of the beads; the direction in which multiple light bars 5 are arranged at intervals is perpendicular to the length direction of the bead device, improving the mounting efficiency of the grille screen, increasing the light transmittance, and improving the display effect.

[0063] In the description of this application, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing this 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 should not be construed as a limitation of this 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 directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0064] 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 actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0065] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious 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 these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. A lamp bead device, characterized in that, It includes: A pad (1), on the first surface of the pad (1), there are multiple chip groups with different light-emitting colors. Each chip group includes multiple chips (3) connected in parallel and having the same light-emitting color. The multiple chip groups are arranged at intervals along a first direction. The chips (3) in each chip group extend along a second direction, and the first direction is perpendicular to the second direction.

2. The lamp bead device according to claim 1, characterized in that: The chips (3) in each chip group are arranged at intervals along the second direction; On the pad (1), there are multiple conductive part groups with the same number as the chip groups. One conductive part group corresponds to one chip group. Each conductive part group includes two conductive parts (2).

3. The lamp bead device according to claim 2, characterized in that: The two conductive parts (2) are respectively arranged in the middle of the corresponding chip group; The extending directions of the chips (3) in the same chip group coincide.

4. The lamp bead device according to claim 1, characterized in that: The chips (3) in each chip group are arranged at intervals along the first direction; On the pad (1), there are multiple conductive part groups with the same number as the chip groups. One conductive part group corresponds to one chip group. Each conductive part group includes two conductive parts (2), and the two conductive parts (2) are respectively arranged at both ends of the corresponding chip group.

5. The lamp bead device according to claim 2 or 4, characterized in that: On the second surface of the pad (1), there is a pin assembly, and the chips (3) in the chip group are electrically connected to the pin assembly.

6. The lamp bead device according to claim 5, characterized in that: The number of the pin assemblies is the same as that of the chip groups. One pin assembly corresponds to one chip group. Each pin assembly includes two pins (4); The connecting wire connected to the first pole of the chips (3) in each chip group is connected to one of the conductive parts (2) in the corresponding conductive part group and is electrically connected to one of the pins (4) in the corresponding pin assembly; The connecting wire connected to the second pole of the chips (3) in each chip group is connected to the other conductive part (2) in the corresponding conductive part group and is electrically connected to the other pin (4) in the corresponding pin assembly; wherein, the polarities of the first pole and the second pole are opposite.

7. The lamp bead device according to claim 6, characterized in that: In each chip group, the first poles of the multiple chips (3) are separately electrically connected to the corresponding pins (4); In each chip group, the second poles of the multiple chips (3) are separately electrically connected to the corresponding pins (4).

8. The lamp bead device according to claim 6, characterized in that: In each chip group, the first poles of the multiple chips (3) are combined and electrically connected to the corresponding pins (4); In each chip group, the second poles of the multiple chips (3) are combined and electrically connected to the corresponding pins (4).

9. A grille display screen, characterized in that, It includes: A screen body; Multiple light bars (5) arranged at intervals along a third direction on the screen body. On each light bar (5), there are multiple lamp bead devices according to any one of claims 1 - 8 arranged at intervals along a fourth direction; Wherein, the third direction is perpendicular to the fourth direction; Moreover, the first point distance between the centers of any two adjacent lamp bead devices on each of the lamp strips (5) is the same, and the second point distance between the centers of the corresponding two lamp bead devices on any two adjacent lamp strips (5) is the same, and the first point distance is equal to the second point distance.

10. The grille display screen according to claim 9, wherein: The length direction of the lamp bead device is the same as the fourth direction, the third direction is the width direction of the screen body, and the fourth direction is the length direction of the screen body; Or, the length direction of the lamp bead device is the same as the third direction, the third direction is the width direction of the screen body, and the fourth direction is the length direction of the screen body.

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