TW202035910A - Tiled light source device - Google Patents

Abstract

A tiled light source device of the invention includes a supporting plate module and a plurality of lighting modules. The plurality of lighting modules is distributed in an array. Each lighting module includes a substrate, a lighting unit, and a driving unit. The substrate has a first surface and a second surface located opposite to the first surface. The lighting unit is located at the first surface. The driving unit is located at the second surface and is electrically connected to the lighting unit. The supporting plate module is disposed on and partially covers the second surface. The supporting plate module is electrically connected to each lighting module.

Description

Spliced light source device

The present invention relates to a spliced light source device; specifically, the present invention relates to a spliced light source device of a display device.

With the advancement of display technology, the light source of some products will adopt a modular design. Please refer to FIG. 1, which is a schematic diagram of a conventional light source device 90.

As shown in Fig. 1, the light source device is assembled by combining different modules (910, 910A). In addition to placing the light-emitting unit 920 (such as a light-emitting diode) on different modules, a driving circuit 930 for driving the light-emitting unit is also required.

However, the light source device after such a combination will form an obvious edge band 990 between the different modules, so that the light source device cannot meet the requirements of product specifications. Therefore, the conventional light source device still needs improvement.

One objective of the present invention is to provide a spliced light source device that can reduce the edge area between the light-emitting modules.

The spliced light source device includes a carrier module and a plurality of light emitting modules. Multiple luminous modes The groups are distributed in an array, and each light-emitting module includes a substrate, a light-emitting unit, and a driving unit. The substrate has a first surface and a second surface. The first surface and the second surface are located on opposite sides of the substrate. The light-emitting unit is located on the first side. The driving unit is located on the second surface and is electrically connected to the light-emitting unit. The carrier module is arranged on the second surface and covers part of the second surface. The carrier module is electrically connected with each light-emitting module.

1,1A,1B‧‧‧Splicable light source device

10‧‧‧Lighting Module

20‧‧‧Carrier Board Module

21‧‧‧Circuit carrier board

23‧‧‧Control Carrier Board

110‧‧‧Substrate

111‧‧‧First side

112‧‧‧Second Side

114‧‧‧ Piercing

120‧‧‧Lighting Unit

130,130A‧‧‧Drive unit

140‧‧‧Flexible circuit

142,142A‧‧‧Connecting part

150‧‧‧The first engaging part

160‧‧‧ bump

170‧‧‧Conductive Adhesive

210‧‧‧The first snap

220‧‧‧Second clip

230‧‧‧Open

D1‧‧‧First direction

D2‧‧‧Second direction

S‧‧‧Predetermined setting range

Fig. 1 is a schematic diagram of a conventional light source device.

Fig. 2A is a schematic diagram of setting the light-emitting module.

FIG. 2B is a schematic diagram of an embodiment of the light emitting module.

Figure 2C is an enlarged cross-sectional view of the light emitting module.

3A, 3B and 3C are back views of different embodiments of the light emitting module.

Fig. 4 is a back view of an embodiment of a spliced light source device.

5A-1 is a back view of another embodiment of a spliced light source device.

5A-2 is an enlarged cross-sectional view of the light-emitting module.

Fig. 5B is a back view of another embodiment of a spliced light source device.

Fig. 6A-1 is a back view of another embodiment of the light emitting module.

Fig. 6A-2 is a schematic diagram of another implementation of the carrier module.

6A-3 is a back view of another embodiment of a spliced light source device.

Fig. 6B is an enlarged cross-sectional view of the light emitting module.

Regarding the "first", "second", ... etc. used in this article, they do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish elements or elements described in the same technical terms. operating.

Regarding "include", "include", "have", "include", etc. used in this article, they are all open terms, which means including but not limited to. The following is a detailed description based on the detection circuit of the present invention with specific embodiments in conjunction with the accompanying drawings, but the provided embodiments are not intended to limit the scope of the present invention.

It should be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "connected" to another element, it can be directly on or connected to the other element, or Intermediate elements may also be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements.

FIG. 2A is a schematic diagram of setting the light-emitting module 10. The spliced light source device 1 includes a plurality of light emitting modules 10.

As shown in FIG. 2A, the spliced light source device 1 is divided into a plurality of sub-regions within a predetermined setting range S, and a light-emitting module 10 is placed in each sub-region. The light emitting modules 10 are distributed in an array, and adjacent light emitting modules 10 are connected to each other.

For example, the light emitting modules 10 arranged along the first direction D1 are arranged side by side, and the sides perpendicular to the first direction D1 abut each other; the light emitting modules 10 arranged along the second direction D2 are arranged perpendicular to the second direction D2 The sides abut against each other, thereby forming a spliced light source device 1.

FIG. 2B is a schematic diagram of an embodiment of the light-emitting module 10. Each light emitting module 10 includes a substrate 110, a light emitting unit 120, and a driving unit.

As shown in FIG. 2B, the substrate 110 has a first surface 111, and the light-emitting unit 120 is located on the first surface 111. The substrate 110 is, for example, a glass substrate. The light emitting unit 120 is, for example, a light emitting diode or a micro light emitting diode.

FIG. 2C is an enlarged cross-sectional view of the light-emitting module 10. As shown in FIG. 2C, the substrate 110 has a first surface 111 and a second surface 112. The first surface 111 and the second surface 112 are located on opposite sides of the substrate 110. The driving unit 130 is located on the second surface 112 and is electrically connected to the light-emitting unit 120.

For example, as shown in FIGS. 2B and 2C, the substrate 110 has a plurality of through holes 114, and the through holes 114 penetrate the first surface 111 and the second surface 112. The driving unit 130 may be electrically connected to the light emitting unit 120 via the through hole 114.

With this design, as shown in FIG. 2B, the distance between the outermost light-emitting unit 120 on the substrate 110 and the edge of the substrate 110 can be reduced, that is, the light-emitting module 10 originally has a space reserved for the driving unit on the first surface 111 It can be eliminated to avoid the problem of edge bands after the different light emitting modules 10 are combined.

From another point of view, the space available for the light emitting unit 120 on the first surface 111 of the substrate 110 is increased, so that the light emitting unit 120 can be more evenly distributed on the substrate 110. Furthermore, such a design can provide a more evenly distributed display brightness.

3A, 3B and 3C are back views of different embodiments of the light-emitting module 10.

As shown in FIG. 3A, the driving unit 130 is directly disposed on the second surface 112. For example, the chip-on-glass (COG) method is used to set on the second surface 112.

In addition, in this embodiment, each light-emitting module 10 further includes a flexible circuit 140. The flexible circuit 140 is disposed on the second surface 112 and is electrically connected to the driving unit 130. The flexible circuit 140 is, for example, a flexible printed circuit (FPC) or a flexible flat cable (FFC).

Furthermore, the flexible circuit 140 is used to transmit signals from the carrier module (not shown), one end of which is fixed to the second surface 112 by hot pressing, and the other end is connected to the carrier module.

As shown in FIG. 3B, a driving unit 130 may be added to the second surface 112 as required. As mentioned above, the space available for the light emitting unit 120 on the first surface 111 of the substrate 110 is increased, which can increase the number of light emitting units 120.

Or, for example, the first surface 111 uses a light-emitting unit 120 with a smaller size. At this time, the second surface 112 can be provided with a driving unit 130A in response to the increase in the number of the light-emitting units 120. In other words, with this design, not only the light-emitting unit 120 but also the use of the driving unit 130 is more flexible.

As shown in FIG. 3C, the flexible circuit 140 is disposed on the second surface 112. The driving unit 130 is disposed on the flexible circuit 140 and is electrically connected to the flexible circuit 140.

For example, the driving unit 130 is arranged on the second surface 112 in a Chip-On-Film (COF) manner. Thereby, when one end of the flexible circuit 140 is fixed to the second surface 112 by hot pressing, the flexible circuit 140 and the driving unit 130 are set up at the same time, which can simplify the manufacturing process.

In addition, similar to the example in FIG. 3B, the number of driving units 130 on the flexible circuit 140 can also be increased according to demand.

FIG. 4 is a back view of an embodiment of the spliced light source device 1. In order to facilitate the description of the relationship between the light-emitting module 10 and the carrier module 20, the perforation is not shown in FIG. 4 and similar subsequent figures.

As shown in FIG. 4, the spliced light source device 1 includes a carrier module 20 and a plurality of light emitting modules 10. The carrier module 20 is disposed on the second surface 112 and covers part of the second surface 112. The carrier module 20 is electrically connected to each light-emitting module 10,

In this embodiment, the carrier module 20 includes a circuit carrier 21 and a control carrier 23. The circuit carrier 21 is disposed on the second surface 112 and is electrically connected to the light-emitting module 10.

As shown in FIG. 4, there are nine connecting portions 142 on the circuit carrier board 21, eight of which are electrically connected to the driving units 130 on different light-emitting modules 10 through flexible circuits 140, and the other connecting portion 142A is used to connect with The control carrier 23 is electrically connected. It should be understood that the number and form of the connecting portions (142, 142A) are not limited thereto. The control carrier 23 may include, for example, components and circuits for providing power, which can be transmitted to different light-emitting modules 10 via the circuit carrier 21.

Since each light-emitting module 10 has a driving unit 130, when a driving unit 130 of a light-emitting module 10 is found to be damaged, only the light-emitting module 10 needs to be removed from the circuit carrier 21 The connecting portion 142 is removed and replaced with a new light-emitting module, so that the operation of the spliced light source device is easier to maintain.

It should be supplemented that in the example of FIG. 4, the driving unit 130 and the flexible circuit 140 adopt the method shown in FIG. 3A, and in other embodiments, the method shown in FIG. 3C may also be adopted. In addition, the spliced light source device 1 can be additionally provided with a protective glass (not shown) on one side of the first surface of the substrate 110 to fix the relative position of each light-emitting module 10 and align the edges between the light-emitting modules 10 .

5A-1 is a back view of another embodiment of the spliced light source device 1A. The difference from the spliced light source device 1A in FIG. 4 is that the carrier module 20 is provided with a clamping component.

As shown in FIG. 5A-1, the circuit carrier board 21 is provided with a second engaging member 220 on the side facing away from the light emitting module 10 (back facing the second surface 112). The second engaging member 220 is, for example, a buckle-type mechanism for electrically connecting with the control carrier board. On the other hand, please refer to the enlarged cross-sectional view of the light emitting module 10 in FIG. 5A-2.

As shown in FIG. 5A-2, the carrier module 20 further includes a first engaging member 210 disposed on the side of the circuit carrier 21 facing the substrate 110. There may be a plurality of first engaging members 210, and the positions corresponding to each light emitting module 10 are arranged. The light emitting module 10 further includes a first engaging portion 150 corresponding to the first engaging member 210.

Thereby, each light-emitting module 10 can be combined with the first engaging member 210 on the circuit carrier board 21 by the first engaging portion 150 to fix the relative position of each light-emitting module 10 so that the light-emitting module 10 Align the edges between.

In other embodiments, the positions of the first engaging member 210 and the first engaging portion 150 can be exchanged, that is, the first engaging member 210 is provided on the second surface 112, and the first engaging portion 150 is provided on the circuit carrier board. 21 faces the side of the substrate 110.

In the example of FIG. 5A-1, the driving unit 130 and the flexible circuit 140 adopt As shown in FIG. 3A, in other embodiments, the method shown in FIG. 3C can also be adopted.

In another embodiment, the first engaging member 210 and the first engaging portion 150 can be used as an electrical connection interface, that is, the driving unit 130 and the circuit carrier 21 of the carrier module 20 can pass through the first engaging portion The combination of 150 and the first engaging member 210 forms an electrical connection, and the flexible circuit can be omitted at this time.

FIG. 5B is a back view of another embodiment of the spliced light source device 1A. As shown in FIG. 5B, the control carrier board 23 is disposed on the side of the circuit carrier board 21 opposite to the light emitting module 10, and the control carrier board 23 is inserted into the second engaging member 220 shown in FIG. 5A-1 to complete the splicing type. Assembly of light source device 1A. Since each light-emitting module 10 has a driving unit 130, when a driving unit 130 of a light-emitting module 10 is found to be damaged, only the light-emitting module 10 needs to be removed from the connecting portion 142 and the engaging components of the circuit carrier 21 And replace the new light-emitting module, so that the operation of the spliced light source device 1A is easier to maintain.

6A-1 is a back view of another embodiment of the light-emitting module 10. As shown in FIG. 6A-1, the light emitting modules 10 are arranged in an array, and the driving unit 130 is provided on the second surface 112 of the substrate 110.

FIG. 6A-2 is a schematic diagram of another implementation of the carrier module 20. As shown in FIG. 6A-2, in this embodiment, the carrier module 20 is a control integrated carrier, and has a plurality of openings 230 corresponding to each driving unit 130 on the light-emitting module 10.

6A-3 is a back view of another embodiment of the spliced light source device 1B. As shown in FIGS. 6A-3, the carrier module 20 is disposed on the second surface 112 of the light-emitting module 10 to complete the assembly of the spliced light source device 1B. The carrier module 20 covers part of the second surface 112. For example, the position on the light-emitting module 10 corresponding to the driving unit 130 is not covered, and the driving unit 130 can be exposed from the carrier module 20 through the opening 230. Thereby, the carrier module 20 is electrically connected with each light-emitting module 10, and the relative position of each light-emitting module 10 is fixed, so that the edges between the light-emitting modules 10 are aligned.

FIG. 6B is an enlarged cross-sectional view of the light-emitting module 10. In the example of Figure 6B, It is now used in the light emitting module 10 of FIGS. 6A-1 and 6A-3.

The difference from the foregoing embodiment is that, as shown in FIG. 6B, in this embodiment, the light-emitting module 10 is provided with conductive glue on one side of the second surface 112 for electrical connection with the carrier module 20. Specifically, each light-emitting module 10 is provided with a bump 160 on the second surface 112 for transmitting a signal to the driving circuit 130. In addition, a conductive adhesive 170 (for example, a conductive adhesive 170) is provided between the bump 160 and the carrier module 20 Anisotropic conductive adhesive), the light-emitting module 10 can be fixed to the carrier module 20 by pressing, and form an electrical connection with the carrier module 20.

With this design, when the driving unit 130 of a light-emitting module 10 is found to be damaged, it is only necessary to remove the conductive glue 170 on the light-emitting module 10 to remove it from the carrier module 20 and replace it with a new light-emitting module 10 Therefore, the operation of the spliced light source device 1B is easier to maintain.

The present invention has been described by the above-mentioned related embodiments, but the above-mentioned embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, modifications and equivalent arrangements included in the spirit and scope of the patent application are all included in the scope of the present invention.

1‧‧‧ Spliced light source device

10‧‧‧Lighting Module

20‧‧‧Carrier Board Module

21‧‧‧Circuit carrier board

23‧‧‧Control Carrier Board

110‧‧‧Substrate

112‧‧‧Second Side

130‧‧‧Drive unit

140‧‧‧Flexible circuit

142,142A‧‧‧Connecting part

Claims (10)

A spliced light source device includes: a plurality of light-emitting modules distributed in an array, each light-emitting module includes: a substrate having a first surface and a second surface, the first surface and the second surface are located The opposite side of the substrate; a light emitting unit located on the first surface; and a driving unit located on the second surface and electrically connected to the light emitting unit; and a carrier module provided on the second surface and covering Part of the second surface, the carrier module is electrically connected to each light-emitting module. The spliced light source device according to claim 1, wherein the driving unit is directly arranged on the second surface. The spliced light source device according to claim 1, wherein each light-emitting module further includes a flexible circuit disposed on the second surface, and the flexible circuit is electrically connected to the driving unit and the carrier module . The spliced light source device according to claim 3, wherein the driving unit is arranged on the flexible circuit. The spliced light source device according to claim 1, wherein the substrate has a plurality of through holes penetrating through the first surface and the second surface, and the driving unit is electrically connected to the light emitting unit through the through holes. The spliced light source device as described in claim 1, further comprising a protective glass fixed on one side of the first surface. The spliced light source device according to claim 1, wherein the carrier module further includes a first engaging member disposed on a side of the carrier module facing the substrate, and each light emitting module further includes a light emitting module corresponding to the A first engaging portion of the first engaging member. The spliced light source device according to claim 7, wherein the driving unit and the carrier module pass through The first engaging portion and the first engaging member are combined to form an electrical connection. The spliced light source device according to claim 1, wherein the carrier module includes: a circuit carrier disposed on the second surface and electrically connected to the light-emitting module; and a control carrier disposed on the circuit carrier The board is opposite to the side of the light emitting module and is electrically connected to the circuit carrier board. The spliced light source device according to claim 1, wherein the carrier module is a control integrated carrier and has a plurality of openings corresponding to each driving unit on the light emitting modules.

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