TW202246864A - Light-emitting module and display device - Google Patents

Abstract

A light-emitting module includes a plurality of light-emitting units and a multi-layer plate. Each of the light-emitting units includes a plurality of light-emitting elements. Each of the light-emitting elements includes a first end and a second end. The multi-layer plate has an upper surface and a lower surface opposite to each other and a plurality of blind holes. The light-emitting units are disposed on the upper surface of the multi-layer plate, and the blind holes are located on the lower surface. The first ends of the light-emitting elements of a first light-emitting unit and a second light-emitting unit in the light-emitting units are electrically connected to each other. The first ends of the light-emitting elements of a third light-emitting unit and a fourth light-emitting unit in the light-emitting units are electrically connected to each other.

Description

Light emitting module and display device

The present invention relates to an optical module and an optical device, and in particular to a light emitting module and a display device having the above light emitting module.

In the era of rapid technological development, display devices have gradually become an indispensable part of life. Generally speaking, in the light-emitting diode display, the pins of the light-emitting diodes are assembled and soldered to the printed circuit board (PCB) through surface-mount technology (Surface-mount technology, SMT). However, at present, since the LED lamp grains and the IC chips are respectively disposed on two opposite surfaces of the printed circuit board, if one side is damaged, the other side cannot be used. Furthermore, the bending characteristic thickness of printed circuit boards is mostly 2 mm, and the production cost of double-sided printed circuit boards is relatively high, and there are gaps between the LED lamp grains of current LED light boards.

In addition, the current design of the LED display cannot solve the problem that the LED or the pads on the printed circuit board fall off and be damaged when the LED display is hit. When the light-emitting diode display screen encounters a collision, it can only be maintained passively by disassembling the printed circuit board and the light-emitting diode, or the damaged printed circuit board is scrapped.

The paragraph "Background Technology" is only used to explain the content of the present invention, so the content disclosed in the "Background Technology" paragraph may contain some known technologies that do not constitute the knowledge of those skilled in the art. The content disclosed in the "Background Technology" paragraph does not mean that the content or the problems to be solved by one or more embodiments of the present invention have been known or recognized by those skilled in the art before the application of the present invention.

The invention provides a lighting module, which can increase the possibility of maintenance.

The present invention provides a display device, which includes the above-mentioned light-emitting module, which can reduce the out-of-control rate of scrapping.

Other purposes and advantages of the present invention can be further understood from the technical features disclosed in the present invention.

In order to achieve one or part or all of the above objectives or other objectives, an embodiment of the present invention provides a light emitting module, including a plurality of light emitting units and a multi-layer board. Each light emitting unit includes a plurality of light emitting elements. Each light emitting element includes a first end and a second end. The multilayer board has upper and lower surfaces opposite to each other and a plurality of blind holes. The light emitting unit is arranged on the upper surface of the multilayer board, and the blind hole is located on the lower surface. The first ends of the light-emitting elements of the first light-emitting unit and the second light-emitting unit are electrically connected to each other. The first ends of the light-emitting elements of the third light-emitting unit and the fourth light-emitting unit are electrically connected to each other.

In an embodiment of the present invention, each of the above-mentioned light emitting units further includes a plurality of side contacts, respectively disposed corresponding to the blind holes. The first end and the second end of each light-emitting element are connected to the blind hole through a side contact to be connected to each other.

In an embodiment of the present invention, one of the first terminal and the second terminal is a P-type electrode, and the other one of the first terminal and the second terminal is an N-type electrode.

In an embodiment of the present invention, the above-mentioned light-emitting elements include red light-emitting diodes, blue light-emitting diodes, and green light-emitting diodes.

In an embodiment of the present invention, the above-mentioned first light emitting unit and the second light emitting unit are arranged adjacent to each other. The arrangement direction of the first light emitting unit and the third light emitting unit is parallel to the arrangement direction of the second light emitting unit and the fourth light emitting unit.

In an embodiment of the present invention, the aforementioned blind holes are located around the multi-layer board.

To achieve one or part or all of the above objectives or other objectives, an embodiment of the present invention provides a display device, including a driving substrate, a plurality of light emitting modules and conductive materials. The light emitting module is configured on the driving substrate and is electrically connected with the driving substrate. Each light-emitting module includes a plurality of light-emitting units and multi-layer boards. Each light emitting unit includes a plurality of light emitting elements. Each light emitting element includes a first end and a second end. The multilayer board has upper and lower surfaces opposite to each other and a plurality of blind holes. The light emitting unit is arranged on the upper surface of the multilayer board, and the blind hole is located on the lower surface. The first ends of the light-emitting elements of the first light-emitting unit and the second light-emitting unit are electrically connected to each other. The first ends of the light-emitting elements of the third light-emitting unit and the fourth light-emitting unit are electrically connected to each other. The multi-layer boards of the adjacent light-emitting modules of the conductive material are spliced together, so that the blind holes of the adjacent light-emitting modules are arranged correspondingly. Adjacent light-emitting modules are connected to each other through the conductive material filled in the blind holes.

In an embodiment of the present invention, each of the above-mentioned light emitting units further includes a plurality of side contacts, respectively disposed corresponding to the blind holes. The first end and the second end of each light-emitting element are connected to the blind hole through a side contact to be connected to each other.

In an embodiment of the present invention, the above-mentioned display device further includes a plurality of pins disposed in some of the blind holes, and the conductive material covers the pins. In adjacent light-emitting modules, the first end or the second end of each light-emitting element that emits light of the same color is electrically connected to each other through blind holes provided with pins.

In an embodiment of the present invention, the above display device further includes a driving chip. The driving chip includes a first pin, a second pin, a plurality of third pins and a plurality of fourth pins. The first end of each light emitting element of the first light emitting unit and the first end of each light emitting element of the second light emitting unit are electrically connected to the first pin of the driving chip. The first end of each light emitting element of the third light emitting unit and the first end of each light emitting element of the fourth light emitting unit are electrically connected to the second pin of the driving chip. In the first light emitting unit and the third light emitting unit, the second end of each light emitting element emitting light of the same color is electrically connected to each third pin of the driving chip. In the second light emitting unit and the fourth light emitting unit, the second end of each light emitting element emitting light of the same color is electrically connected to each fourth pin of the driving chip.

In an embodiment of the present invention, one of the first terminal and the second terminal is a P-type electrode, and the other one of the first terminal and the second terminal is an N-type electrode.

In an embodiment of the present invention, the above-mentioned light-emitting elements include red light-emitting diodes, blue light-emitting diodes, and green light-emitting diodes.

In an embodiment of the present invention, the above-mentioned first light emitting unit and the second light emitting unit are arranged adjacent to each other. The arrangement direction of the first light emitting unit and the third light emitting unit is parallel to the arrangement direction of the second light emitting unit and the fourth light emitting unit.

In an embodiment of the present invention, the aforementioned blind holes are located around the multi-layer board.

In an embodiment of the present invention, the above-mentioned conductive material includes tin or copper.

In an embodiment of the present invention, the above-mentioned driving substrate includes a printed circuit board.

Based on the above, the embodiments of the present invention have at least one of the following advantages or functions. In the design of the light-emitting module of the present invention, the light-emitting unit is arranged on the upper surface of the multi-layer board, and the multi-layer board includes a blind hole located on the lower surface, wherein the light-emitting units of the first light-emitting unit and the second light-emitting unit in the light-emitting unit The first ends of the elements are electrically connected to each other, and the first ends of the light emitting elements of the third light emitting unit and the fourth light emitting unit are electrically connected to each other. Thereby, the possibility of maintenance of the lighting module of the present invention can be improved. In addition, the display device using the light-emitting module of the present invention can make the adjacent light-emitting modules conduct with each other by filling the conductive material into the blind holes of the multi-layer boards that are spliced together, and can effectively shorten the The pitch between light emitting modules.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail together with the accompanying drawings.

The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of a preferred embodiment with reference to the drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only directions referring to the attached drawings. Accordingly, the directional terms are used to illustrate and not to limit the invention.

FIG. 1A is a schematic diagram of a driving chip and a driving substrate of a display device according to an embodiment of the present invention. FIG. 1B is a schematic top view of the light emitting module of the display device shown in FIG. 1A . FIG. 1C is a schematic bottom view of the light emitting module of the display device shown in FIG. 1B . FIG. 2A is a partially enlarged schematic view of a light emitting module of the display device shown in FIG. 1B . FIG. 2B is a partially enlarged schematic view of the light emitting module of the display device in FIG. 1C . FIG. 3A is a schematic circuit diagram of a light emitting module in the display device of FIG. 1B . FIG. 3B is a schematic circuit diagram of a light emitting module in a display device according to another embodiment of the present invention.

It should be noted that, in order to clearly illustrate the structure of the display device 100 , FIG. 1B only schematically shows the nine light emitting modules 120 of the display device 100 , and some components are omitted. Moreover, in order to clearly illustrate the structure of the light emitting module 120 , FIG. 2A and FIG. 2B schematically show only one of the light emitting module 120 and the multilayer board 125 of the display device 100 respectively, and some components are omitted.

Please refer to FIG. 1A , FIG. 1B and FIG. 1C at the same time. In this embodiment, the display device 100 includes a driving substrate 110 , a plurality of light emitting modules 120 and a conductive material 140 . The light emitting module 120 is configured on the driving substrate 110 and is electrically connected to the driving substrate 110 . Here, the driving substrate 110 is, for example, a printed circuit board, but not limited thereto.

In detail, please refer to FIG. 2A and FIG. 2B at the same time. In this embodiment, each light-emitting module 120 includes a plurality of light-emitting units (namely, the first light-emitting unit 121, the second light-emitting unit 122, the third light-emitting unit 123 and the fourth light emitting unit 124 ) and the multi-layer board 125 . Each light emitting unit includes a plurality of light emitting elements LE, and each light emitting element LE includes a first terminal R1 and a second terminal R2. The multi-layer board 125 has an upper surface S1 and a lower surface S2 opposite to each other and a plurality of blind holes 126 . The light emitting units (ie, the first light emitting unit 121 , the second light emitting unit 122 , the third light emitting unit 123 and the fourth light emitting unit 124 ) are disposed on the upper surface S1 of the multilayer board 125 . The blind hole 126 of the multilayer board 125 is located on the lower surface S2 , wherein the blind hole 126 is located at the periphery of the multilayer board 125 . Here, each light emitting unit further includes a plurality of side contacts SC, respectively disposed corresponding to the blind holes 126 . The first terminal R1 and the second terminal R2 of each light emitting element LE are connected to the blind hole 126 through the side contact SC to be connected to each other.

Please refer to FIG. 2A and FIG. 3A at the same time. In this embodiment, the first terminals R1 of the light emitting elements LE of the first light emitting unit 121 and the second light emitting unit 122 are electrically connected to each other. The first terminal R1 of the light emitting element LE of the third light emitting unit 123 and the fourth light emitting unit 124 among the light emitting units is electrically connected to each other. The second end R2 of one of the light emitting elements LE of the first light emitting unit 121 is electrically connected to the second end R2 of one of the light emitting elements LE of the corresponding third light emitting unit 123 . The second end R2 of one of the light emitting elements LE of the second light emitting unit 122 is electrically connected to the second end R2 of one of the light emitting elements LE of the corresponding fourth light emitting unit 124 .

In detail, in this embodiment, the first light-emitting unit 121 includes three light-emitting elements LE, and the three light-emitting elements LE are red light-emitting diodes R, green light-emitting diodes G, and blue light-emitting diodes that emit different colors of light. Light-emitting diode B. Each light emitting element LE includes a first terminal R1 and a second terminal R2, and the first terminals R1 of each light emitting element LE are electrically connected in parallel. That is to say, the first end R1 of the red light emitting diode R, the first end R1 of the green light emitting diode G, and the first end R1 of the blue light emitting diode B are electrically connected in parallel. Similarly, the second light-emitting unit 122, the third light-emitting unit 123 and the fourth light-emitting unit 124 each include three light-emitting elements LE, and the three light-emitting elements LE are red light-emitting diodes R emitting different colors of light, and green light-emitting diodes R. Diode G and blue light-emitting diode B. Each light emitting element LE includes a first terminal R1 and a second terminal R2, and the first terminals R1 of each light emitting element LE are electrically connected in parallel. It should be noted that the first light-emitting unit 121, the second light-emitting unit 122, the third light-emitting unit 123, and the fourth light-emitting unit 124 here are specifically packaged structures, wherein each light-emitting element in each light-emitting unit The LE is electrically connected to the multi-layer board 125 through, for example, wire bonding.

Further, in this embodiment, the first end R1 of each light emitting element LE of the first light emitting unit 121 is electrically connected in parallel with the first end R1 of each light emitting element LE of the second light emitting unit 122 . The first end R1 of each light emitting element LE of the third light emitting unit 123 is electrically connected in parallel with the first end R1 of each light emitting element LE of the fourth light emitting unit 124 . In the first light emitting unit 121 and the third light emitting unit 123 , the second ends R2 of the light emitting elements LE that emit light of the same color are electrically connected in parallel. In the second light emitting unit 122 and the fourth light emitting unit 124 , the second ends R2 of the light emitting elements LE that emit light of the same color are electrically connected in parallel. That is to say, as shown in FIG. 3A , the second end R2 of the red light emitting diode R, the second end R2 of the green light emitting diode G and the second end R2 of the blue light emitting diode B of the first light emitting unit 121 The end R2 is electrically connected to the second end R2 of the red light-emitting diode R, the second end R2 of the green light-emitting diode G, and the second end R2 of the blue light-emitting diode B of the third light-emitting unit 123 in parallel. Terminal R2. The second end R2 of the red light-emitting diode R, the second end R2 of the green light-emitting diode G, and the second end R2 of the blue light-emitting diode B of the second light-emitting unit 122 are respectively electrically connected in parallel to the The second end R2 of the red light emitting diode R, the second end R2 of the green light emitting diode G, and the second end R2 of the blue light emitting diode B of the fourth light emitting unit 124 .

Here, as shown in FIG. 3A , the first light-emitting unit 121 and the second light-emitting unit 122 are arranged adjacent to each other (parallel to the X-axis direction), and the arrangement direction of the first light-emitting unit 121 and the third light-emitting unit 123 is parallel to the second light-emitting unit 123. The arrangement direction of the units 122 and the fourth light emitting unit 124 (parallel to the Y-axis direction). The first end R1 of each light emitting element LE is specifically a P-type electrode, and the second end R2 of each light emitting element LE is specifically an N-type electrode. In other words, the lighting module 120 shown in FIG. 3A of this embodiment is specifically designed as a common anode circuit. In another embodiment, please refer to FIG. 3B , the first end R1 of each light emitting element LE is specifically an N-type electrode, and the second end R2 of each light emitting element LE is specifically a P-type electrode. That is to say, the lighting module 120A is specifically designed as a common cathode circuit, which still belongs to the protection scope of the present invention.

Furthermore, please refer to FIG. 1B and FIG. 2A again. In each light-emitting unit, the common pole of the first end R1 of each light-emitting element LE and the second end R2 of each light-emitting element LE are respectively connected in parallel. It is electrically connected to one of the side contacts SC among the side contacts SC. For example, as shown in FIG. 2A , the first end R1 of the red light emitting diode R, the first end R1 of the green light emitting diode G and the first end R1 of the blue light emitting diode B of the first light emitting unit 121 The common pole of terminal R1 is electrically connected to the side contact SC on the left side of the first light-emitting unit 121 in parallel, and the second terminal R2 of the red light-emitting diode R and the second terminal R2 of the green light-emitting diode G are connected in parallel. The terminal R2 and the second terminal R2 of the blue light-emitting diode B are electrically connected in parallel to the other three side contacts SC on the top side of the first light-emitting unit 121 . Similarly, the first end R1 of the red light emitting diode R, the first end R1 of the green light emitting diode G and the blue light emitting diode of the second light emitting unit 122, the third light emitting unit 123 and the fourth light emitting unit 124 The common pole of the first end R1 of the body B, the second end R2 of the red light-emitting diode R, the second end R2 of the green light-emitting diode G, and the second end R2 of the blue light-emitting diode B are all the same way is electrically connected to the side contact SC. Here, it should be noted that, as shown in FIG. 1B , adjacent light-emitting modules 120 are connected to each other via side contacts SC to blind holes 126 , and the corresponding two side contacts SC All are electrically connected in parallel to the common poles of the first end R1 of the red light-emitting diode R, the first end R1 of the green light-emitting diode G, and the first end R1 of the blue light-emitting diode B, respectively. , one of the second end R2 of the red light-emitting diode R, the second end R2 of the green light-emitting diode G, and the second end R2 of the blue light-emitting diode B. For example, the left side contact SC of the upper light emitting module 120 in FIG. 1B and the corresponding right side contact SC of the upper left light emitting module 120 in FIG. 1B are both electrically connected in parallel. To the common pole of the first end R1 of the red light-emitting diode R, the first end R1 of the green light-emitting diode G, and the first end R1 of the blue light-emitting diode B of the light-emitting unit where it is located.

Please refer to FIG. 1B and FIG. 2A at the same time. In this embodiment, each light emitting module 120 has sixteen side contacts SC, and the first light emitting unit 121, the second light emitting unit 122, the third light emitting unit 123 and Each of the fourth light emitting units 124 corresponds to four side contacts SC. The multi-layer boards 125 of adjacent light emitting modules 120 are spliced together, so that the blind holes 126 of adjacent light emitting modules 120 are arranged correspondingly. As shown in FIG. 2A and FIG. 2B, the light-emitting module 120 located on the first surface S1 of the multilayer board 125 is a complete rectangle, and the second surface S2 of the multilayer board 125 has the design of the blind hole 126, so it looks There are notches, but no contact pads. The shape of the blind holes 126 is embodied as a semicircle, and the blind holes 126 of adjacent light emitting modules 120 may form a circle due to splicing, but not limited thereto. In particular, adjacent light emitting modules 120 are connected to each other through the conductive material 140 filled in the blind holes 126 . Here, the conductive material 140 is, for example, tin or copper. The conductive material 140 can be melted by heating, and can be electrically connected to the side contacts SC of the light emitting module 120 . Adjacent lighting modules 120 can be electrically connected to each other.

More specifically, please refer to FIG. 1C and FIG. 2A at the same time. The display device 100 further includes a plurality of pins 150 disposed in some of the blind holes 126 , and the conductive material 140 covers the pins 150 . In adjacent light emitting modules 120 , the first end R1 or the second end R2 of each light emitting element LE emitting light of the same color is electrically connected to each other through the blind hole 126 provided with the pin 150 . As shown in FIG. 1C , the spliced blind holes 126 are connected with solidified conductive materials 140 , which can also be called nodes, and are used to fix the light emitting modules 120 together. Among them, at least a part of the nodes will be connected with the wiring inside the light emitting module 120, and inserting pins 150 at these nodes can form a contact point between the light emitting modules 120 (that is, a signal input port, and the flexible circuit board and The signal port is connected), so that the side electrical connection between the light emitting modules 120 can be achieved. On the other hand, the spliced light-emitting module 120 and the driving substrate 110 are also electrically connected through the pins 150 .

As shown in FIG. 1C , the places shown with pins 150 can be regarded as nodes. Please refer to Fig. 1B, Fig. 1C and Fig. 2A at the same time, one side of the light-emitting modules 1201 and 1202 has independent nodes a, b, c, d, e, f, g, h, i, j, m with the same polarity , n, and the other side of the light-emitting module 1201 has independent nodes k1, k2, k3, k4 of the same polarity, where nodes a, b, c, d, e, f, g, h, i, j, The polarity of m, n is opposite to the polarity of nodes k1, k2, k3, k4. For example, in the light emitting module 1201, the first terminals R1 of the red light emitting diode R, the green light emitting diode G and the blue light emitting diode B in the first light emitting unit 121 are connected to the node k1, and The second terminals R2 of the red light emitting diode R, the green light emitting diode G and the blue light emitting diode B in the first light emitting unit 121 are respectively connected to the nodes j, m and n. In the light-emitting module 1201, the first terminals R1 of the red light-emitting diode R, the green light-emitting diode G, and the blue light-emitting diode B in the second light-emitting unit 122 are connected to the node k1, and the second light-emitting unit The second ends R2 of the red light emitting diode R, the green light emitting diode G and the blue light emitting diode B in 122 are respectively connected to nodes g, h, i. In the light-emitting module 1201, the first terminals R1 of the red light-emitting diode R, the green light-emitting diode G, and the blue light-emitting diode B in the third light-emitting unit 123 are connected to the node k2, and the third light-emitting unit The second terminals R2 of the red light emitting diode R, the green light emitting diode G and the blue light emitting diode B in 123 are respectively connected to the nodes j, m and n. In the light-emitting module 1201, the first terminals R1 of the red light-emitting diode R, the green light-emitting diode G, and the blue light-emitting diode B in the fourth light-emitting unit 124 are connected to the node k2, and the fourth light-emitting unit The second ends R2 of the red light emitting diode R, the green light emitting diode G and the blue light emitting diode B in 124 are respectively connected to nodes g, h, i.

In the light-emitting module 1202, the first terminals R1 of the red light-emitting diode R, the green light-emitting diode G, and the blue light-emitting diode B in the first light-emitting unit 121 are connected to the node k1, and the first light-emitting unit The second ends R2 of the red light emitting diode R, the green light emitting diode G and the blue light emitting diode B in 121 are respectively connected to nodes d, e, and g. In the light-emitting module 1201, the first terminals R1 of the red light-emitting diode R, the green light-emitting diode G, and the blue light-emitting diode B in the second light-emitting unit 122 are connected to the node k1, and the second light-emitting unit The second terminals R2 of the red light emitting diode R, the green light emitting diode G and the blue light emitting diode B in 122 are respectively connected to the nodes a, b and c. In the light-emitting module 1201, the first terminals R1 of the red light-emitting diode R, the green light-emitting diode G, and the blue light-emitting diode B in the third light-emitting unit 123 are connected to the node k2, and the third light-emitting unit The second terminals R2 of the red light emitting diode R, the green light emitting diode G and the blue light emitting diode B in 123 are respectively connected to the nodes d, e, f. In the light-emitting module 1201, the first terminals R1 of the red light-emitting diode R, the green light-emitting diode G, and the blue light-emitting diode B in the fourth light-emitting unit 124 are connected to the node k2, and the fourth light-emitting unit The second terminals R2 of the red light emitting diode R, the green light emitting diode G and the blue light emitting diode B in 124 are respectively connected to nodes a, b, and c.

In the light-emitting module 1203, the first terminals R1 of the red light-emitting diode R, the green light-emitting diode G, and the blue light-emitting diode B in the first light-emitting unit 121 are connected to the node k3, and the first light-emitting unit The second terminals R2 of the red light emitting diode R, the green light emitting diode G and the blue light emitting diode B in 121 are respectively connected to the nodes j, m and n. In the light-emitting module 1203, the first terminals R1 of the red light-emitting diode R, the green light-emitting diode G, and the blue light-emitting diode B in the second light-emitting unit 122 are connected to the node k3, and the second light-emitting unit The second ends R2 of the red light emitting diode R, the green light emitting diode G and the blue light emitting diode B in 122 are respectively connected to nodes g, h, i. In the light-emitting module 1203, the first terminals R1 of the red light-emitting diode R, the green light-emitting diode G, and the blue light-emitting diode B in the third light-emitting unit 123 are connected to the node k4, and the third light-emitting unit The second terminals R2 of the red light emitting diode R, the green light emitting diode G and the blue light emitting diode B in 123 are respectively connected to the nodes j, m and n. In the light-emitting module 1203, the first terminals R1 of the red light-emitting diode R, the green light-emitting diode G, and the blue light-emitting diode B in the fourth light-emitting unit 124 are connected to the node k4, and the fourth light-emitting unit The second ends R2 of the red light emitting diode R, the green light emitting diode G and the blue light emitting diode B in 124 are respectively connected to nodes g, h, i.

In the light-emitting module 1204, the first terminals R1 of the red light-emitting diode R, the green light-emitting diode G, and the blue light-emitting diode B in the first light-emitting unit 121 are connected to the node k3, and the first light-emitting unit The second ends R2 of the red light emitting diode R, the green light emitting diode G and the blue light emitting diode B in 121 are respectively connected to nodes d, e, and g. In the light-emitting module 1204, the first terminals R1 of the red light-emitting diode R, the green light-emitting diode G, and the blue light-emitting diode B in the second light-emitting unit 122 are connected to the node k3, and the second light-emitting unit The second terminals R2 of the red light emitting diode R, the green light emitting diode G and the blue light emitting diode B in 122 are respectively connected to the nodes a, b and c. In the light-emitting module 1204, the first terminals R1 of the red light-emitting diode R, the green light-emitting diode G, and the blue light-emitting diode B in the third light-emitting unit 123 are connected to the node k4, and the third light-emitting unit The second terminals R2 of the red light emitting diode R, the green light emitting diode G and the blue light emitting diode B in 123 are respectively connected to the nodes d, e, f. In the light-emitting module 1204, the first terminals R1 of the red light-emitting diode R, the green light-emitting diode G, and the blue light-emitting diode B in the fourth light-emitting unit 124 are connected to the node k4, and the fourth light-emitting unit The second terminals R2 of the red light emitting diode R, the green light emitting diode G and the blue light emitting diode B in 124 are respectively connected to nodes a, b, and c.

Furthermore, please refer to FIG. 1A, FIG. 1C and FIG. 2A. In this embodiment, the display device 100 further includes a driving chip 130, wherein the driving chip 130 includes a first pin 131, a second pin 132, three third Three pins 133a, 133b, 133c and three fourth pins 134a, 134b, 134c. The first end R1 of each light emitting element LE of the first light emitting unit 121 and the first end R1 of each light emitting element LE of the second light emitting unit 122 are electrically connected to the first end R1 of the driver chip 130 through, for example, the pin 150 on the node k1. A pin 131. The first end R1 of each light emitting element LE of the third light emitting unit 123 and the first end R1 of each light emitting element LE of the fourth light emitting unit 124 are electrically connected to the first end R1 of the driving chip 130 through, for example, the pin 150 on the node k2. Two pins 132. In the first light emitting unit 121 and the third light emitting unit 123, the second end R2 of each light emitting element LE that emits light of the same color is electrically connected to the third end of the driver chip 130 through the pin 150 on the node j, m, n, for example. Pins 133a, 133b, 133c. For example, in the first light emitting unit 121 and the third light emitting unit 123, the second end R2 of the red light emitting diode R emitting red light is electrically connected to the first end R2 of the driving chip 130 through, for example, the pin 150 on the node j. Three pins 133a. Similarly, in the first light-emitting unit 121 and the third light-emitting unit 123, the second end R2 of the green light-emitting diode G that emits green light is electrically connected to the third end R2 of the driver chip 130 through, for example, the pin 150 on the node m. Pin 133b. In the first light-emitting unit 121 and the third light-emitting unit 123, the second end R2 of the blue light-emitting diode B emitting blue light is electrically connected to the third pin 133c of the driver chip 130 through, for example, the pin 150 on the node n. .

In the second light emitting unit 122 and the fourth light emitting unit 124, the second end R2 of each light emitting element LE that emits light of the same color is electrically connected to the fourth end of the driving chip 130 through the pin 150 on the node g, h, i, for example. Pins 134a, 134b, 134c. For example, in the second light emitting unit 122 and the fourth light emitting unit 124, the second end R2 of the red light emitting diode R that emits red light is electrically connected to the first end R2 of the driving chip 130 through, for example, the pin 150 on the node g. Four pins 134a. Similarly, in the second light-emitting unit 122 and the fourth light-emitting unit 124, the second end R2 of the green light-emitting diode G that emits green light is electrically connected to the fourth end R2 of the driving chip 130 through, for example, the pin 150 on the node h. Pin 134b. In the second light emitting unit 122 and the fourth light emitting unit 124, the second end R2 of the blue light emitting diode B emitting blue light is electrically connected to the fourth pin 134c of the driver chip 130 through, for example, the pin 150 on node i. .

With the design of the above-mentioned pins 150, if the light-emitting module 120 is damaged, the possibility of repairing the light-emitting module 120 can be increased by plugging and unplugging the pins 150, which can reduce the failure rate of the display device 100 out of control. Therefore, the display device 100 of this embodiment can separate the light emitting module 120 from the IC structure of the chip, and has a lower cost. Moreover, when splicing, the design of the blind holes 126 between two adjacent light emitting modules 120 can reduce the pitch (pitch), and the light emitting modules 120 can be fixed through the pins 150 in the blind holes 126 and the light emitting modules 120 can be connected to each other. conduction.

In summary, the embodiments of the present invention have at least one of the following advantages or effects. In the design of the light-emitting module of the present invention, the light-emitting unit is arranged on the upper surface of the multi-layer board, and the multi-layer board includes a blind hole located on the lower surface, wherein the light-emitting units of the first light-emitting unit and the second light-emitting unit in the light-emitting unit The first ends of the elements are electrically connected to each other, and the first ends of the light emitting elements of the third light emitting unit and the fourth light emitting unit are electrically connected to each other. Thereby, the possibility of maintenance of the lighting module of the present invention can be improved. In addition, the display device using the light-emitting module of the present invention can make the adjacent light-emitting modules conduct with each other by filling the conductive material into the blind holes of the multi-layer boards that are spliced together, and can effectively shorten the The pitch between light emitting modules. In addition, through the design of pins, the light-emitting module and the chip IC can form a separate structure. If one side of the driving substrate is damaged, the possibility of repairing can be increased and the rate of scrapping and out-of-control display devices can be reduced.

But the above-mentioned person is only preferred embodiment of the present invention, when can not limit the scope of the present invention implementation with this, promptly all the simple equivalent changes and modifications that are done according to the patent scope of the present invention and the content of the description of the invention, All still belong to the scope that the patent of the present invention covers. In addition, any embodiment or scope of claims of the present invention does not need to achieve all the objectives or advantages or features disclosed in the present invention. In addition, the abstract and the title are only used to assist in the search of patent documents, and are not used to limit the scope of rights of the present invention. In addition, terms such as "first" and "second" mentioned in this specification or the scope of the patent application are only used to name elements (elements) or to distinguish different embodiments or ranges, and are not used to limit the number of elements. upper or lower limit.

100: display device 110: Drive substrate 120, 120A, 1201, 1202, 1203, 1204: light emitting module 121: The first light-emitting unit 122: the second light emitting unit 123: The third light-emitting unit 124: The fourth light-emitting unit 125: multilayer board 126: blind hole 130: drive chip 131: The first pin 132: Second pin 133a, 133b, 133c: the third pin 134a, 134b, 134c: the fourth pin 140: Conductive material 150: pins a, b, c, d, e, f, g, h, i, j, k1, k2, k3, k4, m, n: nodes B: blue light-emitting diode LE: light emitting element G: Green LED R: red light emitting diode R1: first end R2: the second end SC: side contact S1: first surface S2: Second surface.

FIG. 1A is a schematic diagram of a driving chip and a driving substrate of a display device according to an embodiment of the present invention. FIG. 1B is a schematic top view of the light emitting module of the display device shown in FIG. 1A . FIG. 1C is a schematic bottom view of the light emitting module of the display device shown in FIG. 1B . FIG. 2A is a partially enlarged schematic view of a light emitting module of the display device shown in FIG. 1B . FIG. 2B is a partially enlarged schematic view of the light emitting module of the display device in FIG. 1C . FIG. 3A is a schematic circuit diagram of a light emitting module in the display device of FIG. 1B . FIG. 3B is a schematic circuit diagram of a light emitting module in a display device according to another embodiment of the present invention.

1201, 1202, 1203, 1204: light emitting modules

125: multilayer board

126: blind hole

140: Conductive material

150: pins

a, b, c, d, e, f, g, h, i, j, k1, k2, k3, k4, m, n: nodes

B: blue light-emitting diode

G: Green LED

R: red light emitting diode

S2: second surface

Claims (16)

A lighting module, comprising: a plurality of light emitting units, each of which includes a plurality of light emitting elements, wherein each of the light emitting elements includes a first end and a second end; and A multilayer board has an upper surface and a lower surface opposite to each other and a plurality of blind holes, the light emitting units are arranged on the upper surface of the multilayer board, and the blind holes are located on the lower surface, wherein the light emitting units The first ends of the light-emitting elements of a first light-emitting unit and a second light-emitting unit in the unit are electrically connected to each other, and the third light-emitting unit and the fourth light-emitting unit of the plurality of light-emitting units are electrically connected to each other. The first ends of the light emitting elements are electrically connected to each other. The light-emitting module as described in claim 1, wherein each light-emitting unit further includes a plurality of side contacts, which are respectively arranged corresponding to the blind holes, and the first end and the second end of each light-emitting element are connected by the The side contacts are connected to the blind holes for interconnection. The light-emitting module according to claim 1, wherein one of the first terminal and the second terminal is a P-type electrode, and the other of the first terminal and the second terminal is an N-type electrode. The light emitting module according to claim 1, wherein the light emitting elements include a red light emitting diode, a blue light emitting diode and a green light emitting diode. The light-emitting module as claimed in item 1, wherein the first light-emitting unit is adjacent to the second light-emitting unit, and the arrangement direction of the first light-emitting unit and the third light-emitting unit is parallel to the direction of the second light-emitting unit and the second light-emitting unit. The arrangement direction of the fourth light emitting unit. The lighting module as claimed in claim 1, wherein the blind holes are located at the periphery of the multi-layer board. A display device comprising: a drive substrate; A plurality of light-emitting modules are arranged on the driving substrate and electrically connected with the driving substrate, and each light-emitting module includes: a plurality of light emitting units, each of which includes a plurality of light emitting elements, wherein each of the light emitting elements includes a first end and a second end; and A multilayer board has an upper surface and a lower surface opposite to each other and a plurality of blind holes, the light emitting units are arranged on the upper surface of the multilayer board, and the blind holes are located on the lower surface, wherein the light emitting units The first ends of the light-emitting elements of a first light-emitting unit and a second light-emitting unit in the unit are electrically connected to each other, and the third light-emitting unit and the fourth light-emitting unit of the plurality of light-emitting units are electrically connected to each other. The first ends of the light emitting elements are electrically connected to each other; and A conductive material, the multi-layer boards of the adjacent light-emitting modules are spliced with each other, so that the blind holes of the adjacent light-emitting modules are arranged correspondingly, and the adjacent light-emitting modules pass through the filling The conductive materials inserted into the blind holes are connected to each other. The display device as described in claim 7, wherein each of the light-emitting units further includes a plurality of side contacts, which are respectively arranged corresponding to the blind holes, and the first end and the second end of each of the light-emitting elements are connected by these Side contacts are connected to the blind holes for interconnection. The display device as described in claim item 7, further comprising: A plurality of pins are arranged in some of the blind holes, and the conductive material covers the pins, wherein in the adjacent light-emitting modules, the first end or the first end of each light-emitting element that emits the same color light The second ends are electrically connected to each other through the blind holes provided with the pins. The display device as described in claim item 7, further comprising: a driving chip, the driving chip includes a first pin, a second pin, a plurality of third pins and a plurality of fourth pins, The first end of each light emitting element of the first light emitting unit and the first end of each light emitting element of the second light emitting unit are electrically connected to the first pin of the driving chip; The first end of each light emitting element of the third light emitting unit and the first end of each light emitting element of the fourth light emitting unit are electrically connected to the second pin of the driving chip; In the first light-emitting unit and the third light-emitting unit, the second ends of the light-emitting elements that emit light of the same color are electrically connected to the third pins of the driving chip; and In the second light-emitting unit and the fourth light-emitting unit, the second ends of the light-emitting elements that emit light of the same color are electrically connected to the fourth pins of the driving chip. The display device according to claim 7, wherein one of the first terminal and the second terminal is a P-type electrode, and the other of the first terminal and the second terminal is an N-type electrode. The display device according to claim 7, wherein the light emitting elements include a red light emitting diode, a blue light emitting diode and a green light emitting diode. The display device according to claim 7, wherein the first light-emitting unit is adjacent to the second light-emitting unit, and the arrangement direction of the first light-emitting unit and the third light-emitting unit is parallel to the direction of the second light-emitting unit and the second light-emitting unit. The arrangement direction of the fourth light-emitting units. The display device as claimed in claim 7, wherein the blind holes are located at the periphery of the multi-layer board. The display device as claimed in claim 7, wherein the conductive material comprises tin or copper. The display device as claimed in claim 7, wherein the driving substrate comprises a printed circuit board.

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