TWI778282B - Multi-chip organic light emitting diode flexible lamp module structure - Google Patents

Abstract

A multi-chip organic light emitting diode flexible lamp module structure, comprising: a plurality of first electrode wires and at least one second electrode wire are arranged on a flexible printed circuit board, the first electrode wires and the second electrode wires Each of a plurality of corresponding electrical contact areas is reserved, and a plurality of organic light emitting diode glass lamps are arranged on the flexible printed circuit board and are electrically connected with the corresponding electrical contact areas; The diode glass light sheet is combined with the flexible printed circuit board to utilize the flexibility of the flexible printed circuit board to make the module composed of a plurality of organic light emitting diode glass light sheets flexible.

Description

Multi-chip organic light emitting diode flexible lamp module structure

The present invention relates to an OLED (Organic Light-Emitting Diode, organic light-emitting diode) technology, in particular to a flexible multi-chip organic light-emitting diode (OLED) technology that combines a flexible circuit board with a plurality of glass-type OLEDs. Light-emitting diode flexible lamp module structure.

Most of the OLED elements on the market are made of glass substrate 32 (as shown in FIG. 1 ). This kind of OLED glass light sheet has a low manufacturing cost due to the mature process technology. However, because the glass substrate 32 itself is not flexible, it leads to Such an OLED glass light sheet cannot be designed into a curved configuration, and the applicability of the product will be greatly restricted.

Therefore, there is a flexible OLED device on the market, which mainly replaces the glass substrate 32 with a plastic substrate 52 (usually a PI substrate), and coats the PI substrate 52 with a barrier layer ( barrier layer) 54, and after the OLED element is evaporated, two processes of CVD (Chemical Vapor Deposition, chemical vapor deposition) and PVD (Physical Vapor Deposition, physical vapor deposition) are used alternately to perform thin-film encapsulation (thin_film encapsulation) 56 , and finally paste the protective layer 58. However, although this flexible OLED device is thinner, lighter, and flexible, the cost of the CVD process equipment that must be invested is extremely expensive, and the process The yield rate is not high, and the cost of the OLED components produced is also much higher. Therefore, such products have not yet been successfully adopted in large quantities in the market.

From the above, there are still quite a few problems with the known flexible OLED devices. Therefore, in view of the above problems, the inventor of the present case has urgently thought about improvement and innovation, and after a long period of practical research, he finally succeeded. The multi-chip organic light-emitting diode flexible lamp module structure has been developed and completed, which can take into account both the maturity of mass production and manufacturing cost, and is extremely competitive.

In order to solve the aforementioned problems of the prior art, the purpose of the present invention is to provide a multi-piece organic light-emitting diode flexible lamp module structure to solve the problem of organic light-emitting diode (Organic Light-Emitting Diode, OLED) glass The light sheet is not flexible.

In order to achieve the above purpose, the multi-chip organic light emitting diode flexible lamp module structure provided by the present invention mainly includes a flexible printed circuit board (Flexible Printed Circuit, FPC), a plurality of first electrode wires, at least one first Two electrode wires and a plurality of organic light emitting diode glass lamps, wherein the first electrode wires and the second electrode wires are substantially parallel to the flexible printed circuit board, and the first electrode wires are formed by the flexible printed circuit After one end of the board extends a distance to the other end of the flexible printed circuit board, it is bent and extended in the direction of the second electrode wire, and the free ends of the first electrode wires extending to the second electrode wire are all reserved with a first electric wire. A plurality of second electrode connection areas are also reserved at the positions of the second electrode wires corresponding to the first electrode connection areas.

The organic light emitting diode glass light sheets can be pasted on the flexible printed circuit board using adhesive or UV glue, and each organic light emitting diode glass light sheet is provided with a second electrode With at least one first electrode, each organic light emitting diode glass light piece is corresponding to a set of corresponding first electrical connection regions and second electrical connection regions on the flexible printed circuit board, and each organic light-emitting The first electrode and the second electrode of the diode glass lamp can be connected to the first electrical connection area and the second electrode by one of silver glue, soldering or ACF (Anisotropic Conductive Film_Anisotropic Conductive Film), respectively. The electrical connection area is electrically connected.

Wherein, the light-emitting surface of the above-mentioned organic light-emitting diode glass lamp sheet is facing away from the flexible printed circuit board.

Wherein, the above-mentioned flexible printed circuit board has an opening in each corresponding first electrical connection area and second electrical connection area, and the light-emitting surface of the organic light emitting diode glass lamp is facing the flexible printed circuit board opening, and the organic light emitting diode glass lamp can be electrically connected to the first electrical connection area and the second electrical connection area by one of silver glue, soldering or ACF, etc. The above-mentioned silver glue, tin The welding or ACF is from the side of the OLED glass lamp piece to the other side of the OLED glass lamp piece opposite to the light-emitting surface for electrical connection with the first electrode and the second electrode.

Wherein, the plurality of first electrode wires of the above-mentioned flexible printed circuit board are located on one side or both sides of the second electrode wires.

Wherein, when there are two or more second electrode wires on the flexible printed circuit board, the second electrode wires are provided with interconnected contacts.

1: Flexible printed circuit board

11: The first electrode lead

111: The first electrical connection area

12: Second electrode lead

121: the second electrical connection area

122: Contact

13: Opening

2: Organic Light Emitting Diode Glass Lamp

21: Glowing Surface

22: The first electrode

23: Second electrode

3: Silver glue

32: Glass substrate

38: Protective layer

40: Anode

42: Organic layer

44: Cathode

46: Desiccant

48: UV glue

50: Contact pad

52: Plastic substrate (PI substrate)

54: Barrier layer

56: Thin Film Encapsulation

58: Protective layer

60: Anode

62: organic layer

64: Cathode

70: Contact pad

FIG. 1 is a schematic diagram of an organic light emitting diode glass lamp; FIG. 2 is a schematic diagram of a conventional flexible OLED plastic substrate element; FIG. 3 is a schematic diagram of a first embodiment of the structure of a multi-chip organic light emitting diode flexible lamp module according to the present invention; The assembly schematic diagram of the first embodiment of the chip OLED flexible lamp module structure and the cross-sectional schematic diagram of the dotted line A-A; FIG. 5 is the multi-chip OLED flexible lamp module structure of the present invention. The schematic diagram of the second embodiment; FIG. 6 is the assembly schematic diagram of the second embodiment of the multi-chip organic light emitting diode flexible lamp module structure of the present invention and the cross-sectional schematic diagram of the dotted line B-B; FIG. 8 is a schematic diagram of the fourth embodiment of the multi-chip OLED flexible lamp module structure according to the present invention; FIG. 9 It is a schematic diagram of the fifth embodiment of the structure of the multi-chip organic light emitting diode flexible lamp module structure of the present invention; FIG. 10 is the sixth embodiment of the multi-chip organic light emitting diode flexible lamp module structure of the present invention. Schematic 1; FIG. 11 is a schematic diagram 2 of the sixth embodiment of the structure of the multi-chip organic light emitting diode flexible lamp module of the present invention; and FIG. 12 is the multi-chip organic light emitting diode flexible lamp module of the present invention. Schematic diagram 3 of the sixth embodiment of the group structure.

Specific embodiments will be described below with drawings and appendices to illustrate the implementation of the present invention, but they are not intended to limit the scope of protection of the present invention.

Please refer to FIGS. 3 to 4 , which are schematic diagrams and assembly diagrams of the first embodiment of the structure of the multi-chip organic light emitting diode flexible lamp module according to the present invention. In this embodiment, it mainly includes a flexible printed circuit board 1 and a plurality of A plurality of first electrode wires 11 and a second electrode wire 12 are arranged in parallel on the flexible printed circuit board 1, and the second electrode wires 12 are arranged on the first electrodes. One side of the wires 11, wherein the first electrode wires 11 are bent toward the direction of the second electrode wires 12 after extending a distance from one end of the flexible printed circuit board 1 to the other end of the flexible printed circuit board 1 extending, and the free ends of the first electrode wires 11 facing the second electrode wires 12 are all reserved with a first electrical connection area 111, and the second electrode wires 12 are provided with a plurality of first electrical connections. The regions 111 have the same number of second electrical connection regions 121 , and the second electrical connection regions 121 are respectively corresponding to the positions of the first electrical connection regions 111 .

The organic light emitting diode glass light sheets 2 all include a light emitting surface 21 , a first electrode 22 and a second electrode 23 , and the organic light emitting diode glass light sheets 2 are pasted on the On the flexible printed circuit board 1, the light-emitting surfaces 21 of the organic light emitting diode glass lamps 2 are facing away from the flexible printed circuit board 1, and at the same time, each organic light emitting diode glass lamp 2 is respectively A set of corresponding first electrical connection regions 111 and second electrical connection regions 121 are electrically connected with silver glue, solder or ACF (Anisotropic Conductive Film_Anisotropic Conductive Film), wherein the first electrode 22 It is electrically connected to the first electrical connection area 111 , and the second electrode 23 is connected to the second electrical connection area 121 .

From the above, in the first embodiment, the organic light emitting diode glass lamps 2 is pasted on the flexible printed circuit board 1, and since the flexible printed circuit board 1 itself is flexible, the flexible printed circuit board 1 can be bent to the required curvature according to the needs, and the The light-emitting surfaces 21 of the plurality of organic light emitting diode glass lamps 2 emit light, so as to overcome the problem that the organic light emitting diode glass lamps 2 themselves are not flexible. At the same time, since each organic light emitting diode glass lamp 2 is electrically connected to a set of corresponding first electrical connection regions 111 and second electrical connection regions 121 respectively, therefore, each organic light emitting diode The bulk glass lamps 2 can individually control whether to emit light, and the light color of each OLED glass lamp 2 can be controlled to be the same or different from that of other OLED glass lamps 2 . In addition, in order to reduce the width of the flexible printed circuit board 1, the traces of the first electrode wires 11 can also be arranged under the organic light emitting diode glass light sheet 2, so as to save the use of the flexible printed circuit board 1 and increase the The flexibility of the lamp module structure of the present invention.

Please refer to FIGS. 5-6 , which are the second embodiment of the multi-chip organic light emitting diode flexible lamp module structure of the present invention. In this embodiment, it mainly includes a flexible printed circuit board 1 and a plurality of organic light emitting diodes Diode glass lamp 2, a plurality of first electrode wires 11 and a second electrode wire 12 are arranged in parallel on the flexible printed circuit board 1, and the second electrode wire 12 is arranged between the first electrode wires 11 One side, wherein the first electrode wires 11 extend from one end of the flexible printed circuit board 1 to the other end of the flexible printed circuit board 1 for a distance and then bend and extend toward the direction of the second electrode wires 12 , and the The free ends of the first electrode wires 11 facing the second electrode wires 12 are reserved with a first electrical connection area 111 , and the second electrode wires 12 are provided with a plurality of the same number of the first electrical connection areas 111 . The second electrical connection areas 121 , and the second electrical connection areas 121 are respectively corresponding to the positions of the first electrical connection areas 111 . In addition, the flexible printed circuit board 1 is on the first electrode wires 11 . A plurality of openings 13 are opened between the second electrode wires 12, each opening The positions of the ports 13 correspond to a set of corresponding first electrical connection areas 111 and second electrical connection areas 121 respectively.

The organic light emitting diode glass light sheets 2 all include a light emitting surface 21 , a first electrode 22 and a second electrode 23 , and the organic light emitting diode glass light sheets 2 are pasted on the On the flexible printed circuit board 1 , the light emitting surfaces 21 of the organic light emitting diode glass lamps 2 are all facing the opening 13 of the flexible printed circuit board 1 , and at the same time, each organic light emitting diode glass lamp 2 is A set of corresponding first electrical connection regions 111 and second electrical connection regions 121 are respectively electrically connected with silver glue 3 or soldering, wherein the silver glue 3 or soldering is made from organic light emitting diode glass. The side of the light sheet 2 is wound to the other side of the organic light emitting diode glass light sheet 2 opposite to the light emitting surface 21 , and is electrically connected with the first electrode 22 and the second electrode 23 .

From the above, in the second embodiment, the light emitted by the organic light emitting diode glass light sheets 2 through the light emitting surface 21 will pass through the opening 13 of the flexible printed circuit board 1, and since each organic light emitting diode glass 2 emits light through the light emitting surface 21 The polar body glass light pieces 2 are electrically connected to a set of corresponding first electrical connection regions 111 and second electrical connection regions 121 respectively. Therefore, each organic light emitting diode glass light piece 2 can be individually Control whether to emit light, and can control the color of the light emitted by each OLED glass lamp 2 to be the same or different from the color of the light emitted by the other OLED glass lamps 2. The body glass light sheet 2 is pasted on the flexible printed circuit board 1, and since the flexible printed circuit board 1 itself is flexible, the flexible printed circuit board 1 can be bent to the required curvature according to the requirements, and use The plurality of organic light emitting diode glass light sheets 2 disposed thereon emit light, so as to overcome the problem that the organic light emitting diode glass light sheet 2 itself is not flexible.

Please refer to FIG. 7 , which is the third embodiment of the structure of the multi-chip organic light emitting diode flexible lamp module structure of the present invention. In this embodiment, it mainly includes a flexible printed circuit board 1 and a plurality of The organic light emitting diode glass lamp 2, the flexible printed circuit board 1 is provided with a second electrode lead 12 and a plurality of first electrode leads 11 in parallel, wherein the first electrode leads 11 are arranged on the second electrode On both sides of the lead 12, a plurality of second electrical connection areas 121 are reserved on the second electrode lead 12, and the first electrode leads 11 on both sides of the second electrode lead 12 are made of the flexible printed circuit One end of the board 1 extends a distance to the other end of the flexible printed circuit board 1 and then bends and extends in the direction of the second electrode lead 12 , and the first electrode lead 11 faces the free end of the second electrode lead 12 . A first electrical connection area 111 corresponding to the second electrical connection areas 121 is reserved.

The organic light emitting diode glass lamps 2 all include a light emitting surface 21 , two first electrodes 22 and a second electrode 23 , the first electrodes 22 are respectively disposed on both sides of the second electrode 23 , the The organic light emitting diode glass light pieces 2 are pasted on the flexible printed circuit board 1 by adhesive or UV glue, and the light emitting surface 21 of the organic light emitting diode glass light pieces 2 is facing away from the flexible printed circuit board. 1. At the same time, each organic light emitting diode glass lamp 2 is respectively connected with a set of corresponding first electrical connection regions 111 and second electrical connection regions 121 by silver glue, solder or ACF (Anisotropic Conductive Film_ Anisotropic conductive adhesive) for electrical connection, wherein the second electrode 23 is connected to the second electrical connection region 121 , and the first electrode 22 is respectively connected to the first electrical connection on both sides of the second electrical connection region 121 The connection area 111 is electrically connected.

From the above, in the third embodiment, the organic light emitting diode glass light sheets 2 are pasted on the flexible printed circuit board 1, and since the flexible printed circuit board 1 itself is flexible, it can be It is required to bend the flexible printed circuit board 1 to the required curvature, and use the light-emitting surface 21 of the plurality of organic light-emitting diode glass light sheets 2 set on it to emit light, so as to overcome the organic light-emitting diode glass light sheet 2 itself does not have the problem of flexibility. At the same time, since each organic light emitting diode glass lamp 2 is respectively associated with a group of the first electrical connection area 111 and the second electrical connection area 121 is electrically connected, therefore, each OLED glass light piece 2 can individually control whether to emit light, and can control the light color of each OLED glass light piece 2 and other organic light emitting diodes. The light colors emitted by the polar body glass lamps 2 are the same or different.

Furthermore, because in the third embodiment, each organic light emitting diode glass lamp piece 2 has two first electrodes 22 , and each first electrode 22 has the first electrical property with a first electrode wire 11 . The connection area 111 is electrically connected, therefore, each organic light emitting diode glass lamp 2 can use the two first electrodes 22 to control the light emitting surface 21 to emit light at the same time, or the two first electrodes can emit light. The surface area 21 is divided into two regions, and two electrodes 22 control one of the regions to emit light, so that the same light-emitting surface 21 can emit the same light color and pattern or different light colors and patterns.

Please refer to FIG. 8 , which is a fourth embodiment of the structure of a multi-chip organic light emitting diode flexible lamp module according to the present invention. In the fourth embodiment, it mainly includes a flexible printed circuit board 1 and a plurality of organic light emitting diodes The bulk glass lamp 2, the flexible printed circuit board 1 is provided with two second electrode wires 12 parallel to each other, and the same side of the second electrode wires 12 are provided with a plurality of parallel second electrode wires 12 The first electrode wires 11 of the OLED glass lamps 2 are arranged between the second electrode wires 12 and the first electrode wires 11 on one side thereof. That is, the fourth embodiment is a combination of the two first embodiments.

In addition, please refer to FIG. 9 , which is a fifth embodiment of the structure of the multi-chip organic light emitting diode flexible lamp module structure of the present invention, and in the fifth embodiment, the flexible printed circuit board 1 is provided with three interconnected Parallel second electrode wires 12, and a plurality of first electrode wires 11 parallel to the second electrode wires 12 are arranged on the same side of the second electrode wires 12, and the organic light emitting diode glass lamps 2 is arranged between the second electrode wires 12 and the first electrode wires 11 on one side In other words, the fifth embodiment is a combination of three first embodiments. From the above, the multi-chip OLED flexible lamp module structure of the present invention can be combined with a plurality of first embodiments. For example, to expand the number of organic light-emitting diode glass light sheets 2 on a flexible printed circuit board 1, and at the same time, the organic light-emitting diodes can be arranged not only in a single row but also in multiple rows on the flexible printed circuit board. The scope of application of the multi-chip OLED flexible lamp module structure of the present invention is not limited to only providing a plurality of single-arranged organic light emitting diode glass lamps 2. At the same time, taking this as an example, this The invention of the multi-chip organic light emitting diode flexible lamp module structure can also be achieved by combining a plurality of the second embodiment or the third embodiment, or by combining the first embodiment, the second embodiment and the third embodiment among them At least two of them are combined, so that the multi-chip organic light emitting diode flexible lamp module structure of the present invention can be more diversified in application and avoid limiting the scope of application of the present invention.

In addition, please refer to FIGS. 10-12 , which are the sixth embodiment of the structure of the multi-chip organic light emitting diode flexible light sheet module according to the present invention. In FIG. 10 , the second electrode lead 12 is a single wire arranged on the flexible type. The arrangement on the printed circuit board 1, and the second electrode lead 12 is provided with a plurality of preset reserved second electrical connection areas 121, however, in this arrangement, there will be a second electrical connection through which the current passes. The greater the number of the electrical connection regions 121, the greater the voltage drop (IR drop) of the second electrical connection regions 121 disposed behind the second electrode wires 12, resulting in the arrangement of the organic light emitting diode glass lamps 2 according to Before and after the position, the luminous brightness becomes weaker and weaker.

Therefore, as shown in FIG. 11 , the flexible printed circuit board 1 of the multi-chip organic light emitting diode flexible lamp module structure of the present invention can be provided with two adjacent second electrode wires 12a and 12b, one of which is the second electrode wire 12a and 12b. A plurality of second electrical connection areas 121 are still reserved on the electrode lead 12a, and the second electrical connection area 121 is not provided on the other second electrode lead 12b, but a contact 122 is provided at the end thereof with a second electrical connection area 121. The ends of the second electrode wires 12a of the two electrical connection regions 121 are connected. Through this design, When the current is input from both ends of the second electrode wire 12a provided with the second electrical connection regions 121, it can effectively improve the OLED glass lamp 2 to emit light due to the current passing through the plurality of second electrical connection regions 121. A condition of reduced brightness.

In addition, as shown in FIG. 12 , the arrangement of the aforementioned contacts 122 is not limited to only the ends connecting the two second electrode wires 12a and 12c, but can also be arranged at the intermediate positions connecting the two second electrode wires 12a and 12c. and the end, by simultaneously inputting current from both ends and the middle of the second electrode wire 12a provided with the second electrical connection region 121, so that the luminous effect of each organic light emitting diode glass lamp 2 is consistent, avoiding organic light emitting diodes. The light-emitting effect of the light-emitting diode glass lamp sheet 2 is different depending on the position of the light-emitting diode.

Furthermore, since the length of the first electrode wire will also affect the strength of the current passing through, therefore, in the multi-chip OLED flexible lamp module structure of the present invention, the plurality of first electrodes on the flexible printed circuit board 1 The longer the wire 12 is, the thicker the width of the first electrode wire (not shown in the figure) is, so as to reduce the influence of the first electrode and the length of the wire on the current passing.

To sum up, in the multi-piece OLED flexible lamp module structure provided by the present invention, by combining the organic light emitting diode glass lamp 2 with the flexible printed circuit board 1, the flexible printing The flexibility of the circuit board 1 makes the module composed of a plurality of OLED glass lamps 2 flexible, and because the packaging process of the existing OLED glass lamps 2 is mature and the cost is relatively high. Therefore, compared with the OLED element made of the PI substrate, the multi-chip organic light emitting diode flexible lamp module structure of the present invention is more economical and competitive in the market.

The above detailed description is a specific description of a feasible embodiment of the present invention, but this embodiment is not intended to limit the patent scope of the present invention. Any equivalent implementation or modification that does not depart from the technical characteristics of the present invention shall be included in the within the scope of the patent in this case.

1‧‧‧Flexible Printed Circuit Board

11‧‧‧First electrode lead

111‧‧‧First electrical connection area

12‧‧‧Second electrode lead

121‧‧‧Second electrical connection area

2‧‧‧Organic Light Emitting Diode Glass Lamp

21‧‧‧Light-emitting surface

22‧‧‧First electrode

23‧‧‧Second electrode

Claims (10)

A multi-piece organic light emitting diode flexible lamp module structure, which mainly includes: a flexible printed circuit board, the flexible printed circuit board is configured with a plurality of first electrode wires and at least one second electrode wire, the A first electrical contact area is reserved for each of the first electrode wires, and a plurality of second electrical contact areas are reserved for the position of the second electrode wires corresponding to the first electrical contact area of the first electrode wires; a plurality of organic The light-emitting diode glass light sheets are electrically connected with the corresponding first electrical contact area and the second electrical contact area respectively. The multi-piece OLED flexible light sheet module structure according to claim 1, wherein the organic light emitting diode glass light sheet is attached to the flexible printed circuit board through UV glue. The multi-chip OLED flexible lamp module structure as claimed in claim 1, wherein the second electrode wires are arranged in parallel with the first electrode wires, and the first electrode wires are formed by the flexible One end of the printed circuit board extends to the other end of the flexible printed circuit board for a distance and then bends and extends toward the direction of the second electrode lead. The multi-chip OLED flexible light sheet module structure according to claim 1, wherein the width of the second electrode wire is not less than the width of the first electrode wire. The multi-chip OLED flexible lamp module structure as claimed in claim 1, wherein the flexible printed circuit board is provided with a plurality of positions corresponding to the first electrical contact area and the second electrical contact area openings, and the light-emitting surfaces of the organic light-emitting diode glass lamps face the openings of the flexible printed circuit board. The multi-piece OLED flexible light sheet module structure according to claim 1, wherein the light-emitting surfaces of the organic light emitting diode glass light sheets face away from the flexible printed circuit board. The multi-chip organic light emitting diode flexible lamp module structure as claimed in claim 1, wherein the first electrode wires are located on one side of the second electrode wires. The multi-chip organic light emitting diode flexible lamp module structure as claimed in claim 1, wherein the first electrode wires are located on both sides of the second electrode wires. The multi-piece OLED flexible light sheet module structure according to claim 1, wherein the organic light emitting diode glass light sheets can be independently controlled to emit light or not. The multi-piece OLED flexible light sheet module structure according to claim 1, wherein the organic light emitting diode glass light sheets can respectively emit the same light color or different light colors.

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