JP-7857458-B2 - Display devices and tiled display devices

JP7857458B2JP 7857458 B2JP7857458 B2JP 7857458B2JP-7857458-B2

Inventors

▲チョン▼ 然在
朴宰亨

Assignees

エルジーディスプレイカンパニーリミテッド

Dates

Publication Date: 20260512
Application Date: 20250221
Priority Date: 20240229

Claims (20)

A first substrate including a display area and a non-display area surrounding the display area, A light-emitting element provided in the display area on the first substrate, A first pad portion is provided in the non-display area on the upper surface of the first substrate and is positioned on one side edge of the first substrate, A second substrate provided on the lower surface of the first substrate, A second pad portion is provided in the non-display area on the lower surface of the second substrate and is positioned on one side edge of the second substrate, A side link line electrically connects the first pad portion and the second pad portion, A side coating layer is arranged to cover the aforementioned side link line, A side protective layer is disposed to cover at least a portion of the side coating layer, A side sealing layer is disposed to cover at least a portion of the side protective layer. Includes, The aforementioned side protective layer includes a moisture-proofing material and conductive particles . Display device.
The display device according to claim 1, wherein the light-emitting element is a micro-LED (Light Emitting Diode).
The aforementioned side protective layer is A first side protective layer containing the moisture-proofing material, A second side protective layer comprising the conductive particles and conductive polymer , The display device according to claim 1, including the following:
The display device according to claim 3, wherein the moisture-preventing substance is an aromatic hydrocarbon compound.
The display device according to claim 4, wherein the aromatic hydrocarbon compound is selected from the following compounds, at least one of which is selected.
The display device according to claim 3, wherein the conductive particles are at least one carbon nanotube selected from single-walled carbon nanotubes, double-walled carbon nanotubes, and multi-walled carbon nanotubes.
The conductive polymers include polyfluorene, polyphenylene, polypyrene, polyazulene, polynaphthalene, polyacetylene (PAC), and poly (p -Phenylenevinylene ) (poly(p-phenylenevinylene ) (PPV), polypyrrole (PPY), polycarbazole, polyindole, polyazepine, poly(thienylenevinylene) ) Polyaniline (PANI), poly(thiophene), poly(p-phenylene sulfide) ) (poly(p-phenylenesulfide ) , PPS), Poly ( 3,4-Ethylenedeoxythiophene ) (poly3,4-ethylenedioxythiophene, PEDOT), polystyrene sulfonic acid (poly(styrene LPonate ) Poly (PSS) doped ( 3,4-ethylenedeoxythiophene (PEDOT:PSS), poly ( A display device according to claim 3, comprising at least one selected from the group consisting of 3,4-ethylenedeoxythiophene)-tetramethacrylate (PEDOT-TMA) and polyfuran.
The first side protective layer is arranged in contact with the side coating layer, The display device according to claim 3, wherein the second side protective layer is arranged in contact with the first side protective layer.
The display device according to claim 3, further comprising a third side protective layer containing a light-absorbing material.
The display device according to claim 9, wherein the light-absorbing material comprises a black ink containing at least one of carbon black, a black dye, and a black pigment.
The second side protective layer is arranged in contact with the side coating layer, The third side protection layer is arranged in contact with the second side protection layer. The display device according to claim 9, wherein the first side protective layer is arranged in contact with the third side protective layer.
The aforementioned side protective layer is A first side protective layer containing the moisture-proofing material, A fourth side protective layer containing the conductive particles and black rubber The display device according to claim 1, including the following:
The display device according to claim 12, wherein the moisture-preventing material is an aromatic hydrocarbon compound.
The display device according to claim 13, wherein the aromatic hydrocarbon compound is selected from the following compounds, at least one of which is selected.
The display device according to claim 12, wherein the conductive particles are at least one carbon nanotube selected from single-walled carbon nanotubes, double-walled carbon nanotubes, and multi-walled carbon nanotubes.
The display device according to claim 12, wherein the black rubber comprises at least one of carbon black, black dye, and black pigment, and isoprene-based rubber.
The first side protective layer is arranged in contact with the side coating layer, The display device according to claim 12, wherein the fourth side protective layer is arranged in contact with the first side protective layer.
The fourth side protective layer is arranged in contact with the side coating layer, The display device according to claim 12, wherein the first side protective layer is arranged to be in contact with the fourth side protective layer.
The display device according to claim 1, wherein the side link line includes a conductive paste.
The display device according to claim 1, wherein the side coating layer comprises a black ink containing at least one of carbon black, black dye, and black pigment.

Description

The embodiments of this disclosure relate to display devices and tiled display devices. Recently, the importance of display devices has increased with the development of multimedia. Accordingly, display devices such as liquid crystal displays, organic light-emitting displays, and light-emitting diode displays have become commonplace. Display devices, with their excellent characteristics such as thinness, lightness, and low power consumption, are widely used not only in portable electronic devices such as ebooks, PMPs (Portable Multimedia Players), navigation systems, mobile phones, smartphones, smartwatches, tablet PCs (Personal Computers), watch phones, and mobile communication terminals, but also in display screens for televisions, notebooks, and monitors. Recently, there has been an increase in the use of multi-display systems that achieve large screens by arranging display devices in a grid configuration. This is a system configuration diagram of a display device according to an embodiment of the present disclosure.This is an equivalent circuit of a subpixel in a display device according to an embodiment of the present disclosure.This drawing schematically shows a tiled display device according to an embodiment of the present disclosure.This is an exemplary cross-sectional view taken along line A-B in Figure 3.This diagram schematically shows the ESD flow of a display device according to an embodiment of the present disclosure.This is an exemplary cross-sectional view of a partial configuration of a display device according to an embodiment of the present disclosure.This is another exemplary cross-sectional view of a partial configuration of a display device according to an embodiment of the present disclosure.Similarly, this is another exemplary cross-sectional view of a part of the configuration of a display device according to an embodiment of the present disclosure.Similarly, this is another exemplary cross-sectional view of a part of the configuration of a display device according to an embodiment of the present disclosure.Similarly, this is another exemplary cross-sectional view of a part of the configuration of a display device according to an embodiment of the present disclosure.This diagram schematically illustrates the manufacturing process of a display device according to the embodiments of this disclosure.Similarly, this is a diagram schematically illustrating the manufacturing process of a display device according to an embodiment of the present disclosure.Similarly, this is a diagram schematically illustrating the manufacturing process of a display device according to an embodiment of the present disclosure.Similarly, this is a diagram schematically illustrating the manufacturing process of a display device according to an embodiment of the present disclosure.Similarly, this is a diagram schematically illustrating the manufacturing process of a display device according to an embodiment of the present disclosure.Similarly, this is a diagram schematically illustrating the manufacturing process of a display device according to an embodiment of the present disclosure.Similarly, this is a diagram schematically illustrating the manufacturing process of a display device according to an embodiment of the present disclosure. Hereinafter, some embodiments of these models will be described in detail with reference to illustrative drawings. In assigning reference numerals to the components in each drawing, identical components may have the same numeral whenever possible, even if they appear in other drawings. Furthermore, in describing these embodiments, if a specific description of a related known configuration or function is deemed to obscure the gist of these embodiments, such detailed description may be omitted. Where "includes," "has," "is made," etc., are used as referred to herein, other parts may be added unless "only" is used. When a component is expressed singly, it may include multiple components unless otherwise explicitly stated. Furthermore, in describing the components of this embodiment, terms such as "first," "second," "A," "B," (a), and (b) may be used. Such terms are used solely to distinguish a component from other components; they do not limit the nature, order, sequence, or number of the component in question. In descriptions of the spatial relationships between constituent elements, when it is stated that two or more elements are “linked,” “joined,” or “connected,” it should be understood that these elements can be directly “linked,” “joined,” or “connected,” but they can also be “linked,” “joined,” or “connected” through the “intervening” of other elements. Here, other elements can also be included in one or more of the two or more elements that are “linked,” “joined,” or “connected” to each other. In descriptions of temporal relationships related to constituent elements, operating methods, or manufacturing methods, if the temporal sequence or flow of events is described using