OLED DISPLAY DEVICE

Abstract

The invention provides an OLED display device, comprising: a lower package layer, at least two adjacent OLED display units disposed on the lower package layer, and an upper package layer disposed on the at least two adjacent OLED display units; each OLED display unit comprising a substrate disposed on the lower package layer and a light-emitting layer disposed on the substrate. The at least two adjacent OLED display units are integrally package by the lower and the upper package layers. Therefore, a packaging structure for each OLED display unit is not necessary, so that the light-emitting layer in the adjacent OLED display unit of the present invention achieves seamless docking, which reduces the segmentation sense of the OLED display device, and reduces the gap between adjacent OLED display units and the light-emitting layers as well as improves the display quality of the OLED display device.

Claims

1. An organic light-emitting diode (OLED) display device, comprising: a lower package layer, at least two adjacent OLED display units disposed on the lower package layer, and an upper package layer disposed on the at least two adjacent OLED display units; each OLED display unit comprising a substrate disposed on the lower package layer and a light-emitting layer disposed on the substrate.

2. The OLED display device as claimed in claim 1, wherein each OLED display unit further comprises a bonding terminal provided on the substrate and at a side facing away from the adjacent OLED display unit and the light-emitting layer, a plurality of data lines extending vertically and electrically connected to the bonding terminal and the light-emitting layer, and a plurality of scan lines extending horizontally and electrically connected to the bonding terminals and the light-emitting layer.

3. The OLED display device as claimed in claim 1, wherein each OLED display unit further comprises a blocking layer disposed on the substrate and covering a region of the light-emitting layer other than the side facing the adjacent OLED display unit.

4. The OLED display device as claimed in claim 1, wherein each OLED display unit further comprises a desiccant disposed between the substrate and the upper package layer and on a side of the light-emitting layer facing away from the adjacent OLED display unit.

5. The OLED display device as claimed in claim 1, further comprising a sealant disposed between the lower package layer and the upper package layer and located at periphery of each OLED display unit.

6. The OLED display device as claimed in claim 1, further comprising a sealant disposed simultaneously between the lower package layer and the upper package layer and between the substrate of each OLED display unit and the upper package layer, and located at periphery of the light-emitting layer of each OLED display unit.

7. The OLED display device as claimed in claim 2, further comprising a sealant disposed between the substrate of each OLED display unit and the upper package layer and located between the light-emitting layer and the bonding terminals of each OLED display unit.

8. The OLED display device as claimed in claim 7, further comprising an adhesive layer disposed between the lower package layer and the substrate of each OLED display unit.

9. The OLED display device as claimed in claim 1, wherein the at least two adjacent OLED display units have the same or different thickness.

10. The OLED display device as claimed in claim 1, wherein the lower package layer is made of a transparent material or an opaque material, and the upper package layer is made of a transparent material or an opaque material different from the lower package layer.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To make the technical solution of the embodiments according to the present invention, a brief description of the drawings that are necessary for the illustration of the embodiments will be given as follows. Apparently, the drawings described below show only example embodiments of the present invention and for those having ordinary skills in the art, other drawings may be easily obtained from these drawings without paying any creative effort.

[0019] FIG. 1 is a top cross-sectional view showing the OLED display device according to the first exemplary embodiment of the present invention.

[0020] FIG. 2 is a cross-sectional view along A-A in FIG. 1.

[0021] FIG. 3 is a top cross-sectional view showing the OLED display device according to the second exemplary embodiment of the present invention.

[0022] FIG. 4 is a cross-sectional view along B-B in FIG. 3.

[0023] FIG. 5 is a top cross-sectional view showing the OLED display device according to the third exemplary embodiment of the present invention.

[0024] FIG. 6 is a cross-sectional view along C-C in FIG. 5.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] To further explain the technical means and effect of the present invention, the following refers to embodiments and drawings for detailed description. Apparently, the described embodiments are merely some embodiments of the present invention, instead of all embodiments. All other embodiments based on embodiments in the present invention and obtained by those skilled in the art without departing from the creative work of the present invention are within the scope of the present invention.

[0026] The terms comprising and having and any variations thereof appearing in the specification, claims, and drawings of the present application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units not listed, or alternatively, other steps or units inherent to these processes, methods, products or equipment. In addition, the terms first, second and third are used to distinguish different objects and not intended to describe a particular order.

[0027] Refer to FIGS. 1-6. The OLED display device of the present invention comprises: a lower package layer 10, at least two adjacent OLED display units 20 disposed on the lower package layer 10, and an upper package layer 30 disposed on the at least two adjacent OLED display units 20;

[0028] each OLED display unit 20 comprising a substrate 21 disposed on the lower package layer 10 and a light-emitting layer 22 disposed on the substrate 21.

[0029] It should be noted that, in the present invention, the at least two adjacent OLED display units 20 are integrally package by the lower and the upper package layers 10, 30. Therefore, a packaging structure for each OLED display unit 20 is not necessary and the problem of larger package width at the splicing in the prior is not applicable to the present invention. As such, the light-emitting layer 22 in the adjacent OLED display unit 20 of the present invention achieves seamless docking, which reduces the segmentation sense of the OLED display device, and reduces the gap between adjacent OLED display units 20 and the light-emitting layers 22 as well as improves the display quality of the OLED display device.

[0030] Specifically, the thicknesses of the at least two adjacent OLED display units 20 may be the same or different. When the thicknesses are the same, all the OLED display units 20 are disposed on the same plane, which is favorable for improving the overall package result; when the thicknesses are different, the lower surfaces of the substrates 21 of all the OLED display units 20 can be disposed on the same plane, or all the upper surfaces of the light-emitting layers 22 of the OLED display units 20 are disposed on the same plane to improve the overall package result.

[0031] Specifically, the substrate 21 is made of one of the following materials: glass, metal, polyimide (PI) and polycarbonate (PC).

[0032] Specifically, each OLED display unit 20 further comprises a bonding terminal 23 disposed on the substrate 21 and at a side facing away from the adjacent OLED display unit 20 and the light emitting layer 22, a plurality of data lines 24 extending vertically and electrically connected to the bonding terminal 23 and the light-emitting layer 22, and a plurality of scan lines 25 extending horizontally and electrically connected to the bonding terminals 23 and the light-emitting layer 22. As such, the routings for each OLED display unit 20 are far from the side facing the adjacent OLED display unit 20, and the gap between the light-emitting layers 22 of the adjacent OLED display units 20 is further reduced. Clearly, the alignment of each OLED display unit 20 comprises not only the above data line 24 and the scan line 25, but also other routings, such as, a power signal line for supplying an electrical signal to the pixel electrode or the anode, which is not illustrated in the present invention here. In addition, each OLED display unit 20 may further comprises a gate driving circuit and a signal line connected to the gate driving circuit. In a preferred embodiment, the gate driving circuit can also be disposed away from the side facing the adjacent OLED display unit 20 to avoid increasing the gap between the light-emitting layers 22 of the adjacent OLED display units 20.

[0033] Specifically, the bonding terminals 23 are further disposed with pads for bonding with a flexible circuit board (FPC) and an integrated circuit (IC) for electrical connection to provide electrical signals to the data line 24 and the scan line 25. The light-emitting layer 22 comprises a plurality of sub-pixels arranged in an array, and the data lines 24 and the scan lines 25 are used to transmit electrical signals to a plurality of sub-pixels.

[0034] Specifically, each OLED display unit 20 further comprises a blocking layer 26 disposed on the substrate 21 and covering a region of the light-emitting layer 22 other than the side facing the adjacent OLED display unit 20 to improve the blocking ability of the OLED display device against moisture without increasing the gap between the light-emitting layers 22 of adjacent OLED display units 20.

[0035] Specifically, the lower package layer 10 is made of a transparent material or an opaque material, and the upper package layer 30 is made of a transparent material or an opaque material different from the lower package layer 10 to realize the top-emitting OLED display device as well as bottom-emitting OLED display device.

[0036] Refer to FIG. 1 and FIG. 2. FIG. 1 is a top cross-sectional view showing the OLED display device according to the first exemplary embodiment of the present invention. FIG. 2 is a cross-sectional view along A-A in FIG. 1. Optionally, the OLED display device further comprises a sealant 40 disposed between the lower package layer 10 and the upper package layer 30 and located at periphery of each OLED display unit 20. Moreover, the OLED display device further comprises an adhesive layer disposed between the lower package layer 10 and the substrate 21 of each OLED display unit 20, which is not shown here.

[0037] Refer to FIG. 3 and FIG. 4. FIG. 3 is a top cross-sectional view showing the OLED display device according to the second exemplary embodiment of the present invention. FIG. 4 is a cross-sectional view along B-B in FIG. 3. Optionally, the OLED display device further comprises a sealant 40 disposed simultaneously between the lower package layer 10 and the upper package layer 30 and between the substrate 21 of each OLED display unit 20 and the upper package layer 30, and located at periphery of the light-emitting layer 22 of each OLED display unit 20 to improve the total package result and the moisture-blocking ability. Moreover, the OLED display device further comprises an adhesive layer disposed between the lower package layer 10 and the substrate 21 of each OLED display unit 20, which is not shown here.

[0038] Refer to FIG. 5 and FIG. 6. FIG. 5 is a top cross-sectional view showing the OLED display device according to the third exemplary embodiment of the present invention. FIG. 6 is a cross-sectional view along C-C in FIG. 5. Optionally, the OLED display device further comprises a sealant 40 disposed between the substrate 21 of each OLED display unit 20 and the upper package layer 30 and located between the light-emitting layer 22 and the bonding terminals 23 of each OLED display unit 20 so that the bonding terminals 23 of each OLED display unit 20 are exposed outside the package of the OLED display device to better connect to external flexible circuit board and the integrated circuit.

[0039] Moreover, the OLED display device further comprises an adhesive layer 50 disposed between the lower package layer 10 and the substrate 21 of each OLED display unit 20. Since the bonding terminals 23 of each OLED display unit 20 are away from the side facing the adjacent OLED display unit 20, the adhesion layer 50 has an extremely wide width and is possible to effectively prevent moisture from passing through the adhesion layer 50, entering the side facing the adjacent OLED display unit 20 side and then entering the light-emitting layer 22 again, which improves the lifespan of the OLED display device.

[0040] In summary, The OLED display device of the present invention comprises: a lower package layer, at least two adjacent OLED display units disposed on the lower package layer, and an upper package layer disposed on the at least two adjacent OLED display units; each OLED display unit comprising a substrate disposed on the lower package layer and a light-emitting layer disposed on the substrate. The at least two adjacent OLED display units are integrally package by the lower and the upper package layers. Therefore, a packaging structure for each OLED display unit is not necessary, so that the light-emitting layer in the adjacent OLED display unit of the present invention achieves seamless docking, which reduces the segmentation sense of the OLED display device, and reduces the gap between adjacent OLED display units and the light-emitting layers as well as improves the display quality of the OLED display device.

[0041] It should be noted that each of the embodiments in this specification is described in a progressive manner, each of which is primarily described in connection with other embodiments with emphasis on the difference parts, and the same or similar parts may be seen from each other. For the device embodiment, since it is substantially similar to the method embodiment, the description is relatively simple and the relevant description may be described in part of the method embodiment.

[0042] Embodiments of the present invention have been described, but not intending to impose any unduly constraint to the appended claims. Any modification of equivalent structure or equivalent process made according to the disclosure and drawings of the present invention, or any application thereof, directly or indirectly, to other related fields of technique, is considered encompassed in the scope of protection defined by the claims of the present invention.