TWI499107B - Oled lighting apparatus - Google Patents

Description

Organic light emitting diode lighting device

The present invention relates to a lighting device, and more particularly to an organic light emitting diode lighting device.

Organic light-emitting diodes have the advantages of self-luminescence, low power consumption, high reaction rate, etc., and have attracted extensive attention in the field of display and illumination. The organic light-emitting diode generates light by electrically exciting a fluorescent layer of a fluorescent or phosphorescent organic compound.

Please refer to FIG. 1 and FIG. 2. FIG. 1 is a schematic cross-sectional view of a conventional organic light emitting diode illumination device. 2 is a top plan view of the conventional organic light emitting diode lighting device shown in FIG. 1. As shown in FIG. 1, the conventional organic light-emitting diode illumination device 1 includes a substrate 10 and an anode electrode layer 11, an organic light-emitting layer 12, and a cathode electrode layer 13 which are sequentially stacked on the substrate 10. Further, the cover 14 is fixed to the substrate 10 by the sealant 15. The anode electrode layer 11 and the cathode electrode layer 13 respectively have wiring portions 110 and 130 extending outside the cover 14, and these wiring portions 110 and 130 are electrically connected to an external power source (not shown).

As shown in FIG. 2, the wiring portions 110, 130 are distributed at the periphery of the substrate 10. In the manufacturing process of the conventional organic light-emitting diode lighting device 1, in order to reserve these wiring portions 110 on the substrate 10, The area where 130 is disposed, the organic light-emitting layer 12 must be disposed at the center of the substrate 10 such that the periphery of the substrate 10 has a sufficient and symmetrical space for the wiring portions 110, 130 to be disposed.

However, in the structure of the above-described organic light-emitting diode illumination device 1, the area where the light emission can be performed is relatively small, and an organic light-emitting diode illumination device having a size of 100 mm (mm) * 100 mm (mm) is taken as an example. The area where it can emit light is only 87 mm (mm) * 87 mm (mm), in other words, the utilization ratio of the overall light-emitting area is only 75.7%. How to effectively improve the light area utilization rate of the organic light-emitting diode lighting device is one of the key points worthy of attention of the relevant personnel in the field.

One of the objects of the present invention is to provide an organic light emitting diode lighting device to effectively improve the utilization ratio of the light emitting region.

To achieve the above advantages, the organic light emitting diode illumination device provided by the present invention comprises a substrate, an organic light emitting structure and at least two electrode connection units. The substrate has a plurality of sides. The organic light emitting structure is disposed on the substrate, and a portion of the substrate is exposed to the organic light emitting structure. The organic light emitting structure has a first electrode layer, an organic light emitting layer, and a second electrode layer which are sequentially stacked. The electrode connection units are disposed on a portion of the substrate exposed to the organic light emitting structure and located between one of the sides of the side and the organic light emitting structure. The electrode connection units are electrically connected to the first electrode layer and the second electrode layer, respectively.

In an embodiment of the invention, the substrate has a rectangular shape, and the side edges include opposite two long sides and opposite two short sides, and the electrode connection units are located on one of the short sides of the short sides and the organic light emitting Between the structures.

In an embodiment of the invention, the ratio of the length of each of the long sides to the length of each of the short sides is between 1.5 and 3.5.

In an embodiment of the invention, the organic light emitting diode described above The illumination device further includes a first reference line and a second reference line, the first reference line passes through a center position of the substrate, and the second reference line passes through a center position of the organic light emitting structure, wherein the first reference line and the second reference line do not overlap.

In an embodiment of the invention, the organic light emitting diode illumination device further includes a protective layer disposed above the organic light emitting structure.

In an embodiment of the invention, the OLED illumination device further includes a sealant disposed between the protective layer and the substrate, and the protective layer is fixed on the substrate by a sealant.

In an embodiment of the invention, the material of the protective layer comprises glass and plastic, and the material of the sealing material comprises ultraviolet curing glue and glass glue.

In an embodiment of the invention, the substrate further has a trace, and the first electrode layer and the second electrode layer are electrically connected to the electrode connection unit by wires respectively.

In an embodiment of the invention, the first electrode layer is an anode electrode layer, and the second electrode layer is a cathode electrode layer.

The organic light emitting diode illumination device of the present invention is provided with the electrode connection unit only in a region between at least one side of the substrate and the organic light emitting structure, and at least one side of the substrate is a rectangular short side, and then The electrode wiring unit is electrically connected to the first electrode layer and the second electrode layer through the wiring of the substrate. Under such a structural design, the area of the area on the substrate that can be used for the organic light-emitting structure is relatively known. In this case, it becomes larger, and the problem of insufficient utilization of the light-emitting area is effectively improved.

The above and other objects, features and advantages of the present invention will become more <RTIgt;

1‧‧‧Looking Organic Light Emitting Diode Light Emitting Device

10‧‧‧Substrate

11‧‧‧Anode electrode layer

12‧‧‧Organic light-emitting layer

13‧‧‧Cathode electrode layer

14‧‧‧ Cover

15‧‧‧Packing

110, 130‧‧ ‧ wiring department

2‧‧‧Organic light-emitting diode lighting device

20‧‧‧Substrate

21‧‧‧Organic light-emitting structure

22, 23‧‧‧electrode wiring unit

24‧‧‧Protective layer

25‧‧‧Packing

201, 202, 203, 204‧‧‧ side

211‧‧‧First electrode layer

212‧‧‧Organic light-emitting layer

213‧‧‧Second electrode layer

L1‧‧‧ first baseline

L2‧‧‧ second baseline

FIG. 1 is a schematic cross-sectional view showing a conventional organic light emitting diode illuminating device.

2 is a schematic top plan view of the conventional organic light emitting diode light emitting device shown in FIG. 1.

3 is a cross-sectional view of an organic light emitting diode illumination device according to an embodiment of the invention.

4 is a schematic top plan view of the organic light emitting diode lighting device shown in FIG. 3.

Please refer to FIG. 3 and FIG. 4. FIG. 3 is a schematic cross-sectional view of an organic light emitting diode illumination device according to an embodiment of the present invention. 4 is a top plan view of the organic light emitting diode lighting device shown in FIG. 3. As shown in FIG. 3 and FIG. 4, the organic light emitting diode illumination device 2 of the present embodiment includes a substrate 20, an organic light emitting structure 21, and at least two electrode connection units 22, 23. The substrate 20 has a plurality of sides 201, 202, 203, 204 that are adjacent to each other. The organic light emitting structure 21 is disposed on the substrate 20, and a portion of the substrate 20 is exposed to the organic light emitting structure 21. The organic light emitting structure 21 has a first electrode layer 211, an organic light emitting layer 212, and a second electrode layer 213 which are sequentially stacked on the substrate 20. The electrode connection units 22, 23 are disposed on a portion of the substrate 20 exposed on the organic light-emitting structure 21, and are located between one of the side edges 201, 202, 203, 204 and the organic light-emitting structure 21. The electrode connection units 22 and 23 are electrically connected to the first electrode layer 211 and the second electrode layer 213, respectively. The electrode connection units 22 and 23 are electrically connected to an external power source (not shown in the figure).

As shown in FIG. 3, the organic light emitting diode according to the embodiment The device 2 further includes a protective layer 24 disposed above the organic light emitting structure 21 and a sealant 25 disposed between the protective layer 24 and the substrate 20. The protective layer 24 is fixed to the substrate 20 by a sealant 25. In this embodiment, the material of the protective layer 24 is, for example, glass or plastic, but the invention is not limited thereto. The material of the sealant 25 is, for example, a UV curable adhesive (UV adhesive) or a glass adhesive, but the invention is not limited thereto. In addition, the substrate 20 of the present embodiment further has a trace (not shown in the figure), and the first electrode layer 211 and the second electrode layer 213 are electrically connected to the electrode connection unit 22 by wires respectively. ,twenty three. In the present embodiment, the first electrode layer 211 is, for example, an anode electrode layer, and the second electrode layer 213 is, for example, a cathode electrode layer, but the invention is not limited thereto.

As shown in FIG. 4, the shape of the substrate 20 in this embodiment is, for example, a rectangle (rectangular). The sides 201 and 203 of the substrate 20 are rectangular short sides, and the sides 202 and 204 of the substrate 20 are rectangularly opposed. The long side of the two. In the present embodiment, the electrode connection units 22, 23 are located between one of the short sides (i.e., the side 201) and the organic light-emitting structure 21. Since the electrode connection units 22, 23 are disposed only in the area near the side 201 of the substrate 20, the areas at the other three sides 202, 203, 204 of the substrate 20 need not be provided for the electrode connection unit, that is, The areas near the other three sides 202, 203, 204 of the substrate 20 can be used as the installation area of the organic light-emitting structure 21 (that is, the organic light-emitting structure with a large light-emitting area can be set), and also due to the electrode wiring. The units 22, 23 are disposed near the short side (side 201), and the area of the area for arranging the electrode wiring units 22, 23 is relatively large with respect to the area near the long sides (sides 202, 204). Small, therefore, under such a structural design, it is effective to increase the utilization rate of the light-emitting area. For example, when the length of the long side of the substrate 20 is 103 mm, the length of the short side is 57 mm, and the ratio of the long side to the short side is approximately 1.8, the substrate 20 is available. The area in which the organic light-emitting structure 21 is disposed is as high as 90% or more. It is to be noted that, in order to more clearly express that the organic light-emitting structure 21 is disposed in a region covered by the substrate 20, the members of the protective layer 24 and the sealant 25 are omitted in FIG.

It is to be noted that the ratio of the long side to the short side of the substrate 20 is approximately 1.8, which is only one embodiment of the present invention, and the present invention is not limited thereto. In other embodiments, the ratio of the long side to the short side of the substrate 20 is between 1.5 and 3.5. In addition, the shape of the substrate 20 is not limited to a rectangle having a long side and a short side. In other embodiments, the shape of the substrate 20 may be a square having four sides equal in length.

It should be noted that, in this embodiment, the shape of the organic light emitting structure 21 is substantially similar to the shape of the substrate 20, and the position of the organic light emitting structure 21 disposed on the substrate 20 is closer to the side of the side 203. In detail, as shown in FIGS. 3 and 4, the organic light-emitting diode illumination device 1 has a first reference line L1 and a second reference line L2. The first reference line L1 passes through the center position of the substrate 20, and the second reference line L2 passes through the center position of the organic light emitting structure, wherein the first reference line L1 and the second reference line L2 do not overlap each other. Under such a structural design, the spacing between the side 201 (short side) of the substrate 20 and the organic light emitting structure 21 is increased, in other words, the area of the substrate 20 exposed to the organic light emitting structure 21 is increased to provide sufficient space for the substrate These electrode connection units 22, 23 are provided.

In summary, the structural advantage of the organic light-emitting diode illumination device of the present invention is that the electrode connection unit is disposed only in a region between at least one side of the substrate and the organic light-emitting structure, and at least one side of the substrate The edge is a short side of the rectangle, and then the wiring through the substrate is such that the electrode connection unit is electrically connected to the first electrode layer and the second electrode layer. In such a structural design In the following, the area of the substrate on which the organic light-emitting structure can be disposed is increased by a large amount relative to the conventional structure, and the problem of insufficient utilization of the light-emitting area is effectively improved.

While the present invention has been described in its preferred embodiments, the present invention is not intended to limit the invention, and the present invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application.

2‧‧‧Organic light-emitting diode lighting device

20‧‧‧Substrate

21‧‧‧Organic light-emitting structure

22‧‧‧Electrode wiring unit

24‧‧‧Protective layer

25‧‧‧Packing

201, 203‧‧‧ side

211‧‧‧First electrode layer

212‧‧‧Organic light-emitting layer

213‧‧‧Second electrode layer

L1‧‧‧ first baseline

L2‧‧‧ second baseline

Claims (7)

An organic light emitting diode lighting device includes: a substrate having a plurality of sides, the substrate is shaped like a rectangle, and the side edges include opposite two long sides and opposite two short sides, each of the long sides The ratio of the length to the length of each short side is between 1.5 and 3.5; an organic light emitting structure is disposed on the substrate, and a portion of the substrate is exposed to the organic light emitting structure, and the organic light emitting structure has a sequentially stacked one a first electrode layer, an organic light emitting layer and a second electrode layer; and a two-electrode wiring unit disposed on a portion of the substrate exposed on the organic light emitting structure and located on one of the short sides of the short sides Between the organic light-emitting structures, the area of the substrate exposed to the portion of the organic light-emitting structure is reduced, so that the area of the substrate on which the organic light-emitting structure is disposed is greater than 90%, and the electrode connection units are electrically connected to The first electrode layer and the second electrode layer are electrically connected to an external power source. The OLED illumination device of claim 1, further comprising a first reference line and a second reference line, wherein the first reference line passes through a center position of the substrate, and the second reference line passes a central location of the organic light emitting structure, wherein the first reference line does not overlap the second reference line. The organic light emitting diode lighting device of claim 1, further comprising a protective layer disposed above the organic light emitting structure. The organic light emitting diode lighting device of claim 3, further comprising a glue disposed between the protective layer and the substrate, the protection The layer is fixed to the substrate by the sealant. The organic light-emitting diode lighting device of claim 4, wherein the protective layer is made of a glass or a plastic, and the sealing material is an ultraviolet curing glue or a glass glue. The OLED illumination device of claim 1, wherein the substrate further has a trace, and the first electrode layer and the second electrode layer are electrically connected to the second electrode layer respectively. Electrode wiring unit. The organic light emitting diode lighting device of claim 6, wherein the first electrode layer is an anode electrode layer, and the second electrode layer is a cathode electrode layer.