KR-102961786-B1 - DISPLAY DEVICE

Abstract

A display device may include a substrate comprising a display area including a first area, a second area, and a third area, and a non-display area surrounding at least one side of the display area; first pixels disposed in the first area, second pixels disposed in the second area, and third pixels disposed in the third area; a pad portion provided in the non-display area and electrically connected to each of the first to third pixels; a wiring portion including a first wiring disposed in the non-display area between the pad portion and the first area, a second wiring disposed in the non-display area between the pad portion and the second area, and a third wiring disposed in the non-display area between the pad portion and the second area and spaced apart from the second wiring; a bridge line extending in a first direction and commonly disposed in the second and third areas; and an extension wiring extending in a second direction intersecting the first direction, disposed in the second area, and electrically connected to the bridge line. The extension wiring may be electrically connected to the third wiring.

Inventors

• 노상용
• 손선권
• 채종철

Assignees

• 삼성디스플레이 주식회사

Dates

Publication Date

20260511

Application Date

20220128

Claims (20)

1. A substrate comprising a display area including a first area, a second area, and a third area, and a non-display area surrounding at least one side of the display area; First pixels disposed in the first region, second pixels disposed in the second region, and third pixels disposed in the third region; A pad portion provided in the above non-display area and electrically connected to each of the first to third pixels; A wiring section comprising a first wiring disposed in the non-display area between the pad section and the first area, a second wiring disposed in the non-display area between the pad section and the second area, and a third wiring disposed in the non-display area between the pad section and the second area and spaced apart from the second wiring; A bridge line extending in a first direction and commonly disposed in the second and third regions; An extension wiring extending in a second direction intersecting the first direction and disposed in the second area and electrically connected to the bridge line; and A signal wiring connected to at least one of the third pixels within the third region and configured to receive a signal from the pad portion through the bridge line and the extension wiring; comprising The above extension wiring is electrically connected to the above third wiring, and A display device in which the signal wiring and the extension wiring are provided on the same layer and include the same material.
2. In Article 1, The pad portion is provided in the non-display area and includes a first pad electrically connected to the first pixels, a second pad electrically connected to the second pixels, and a third pad electrically connected to the third pixels. A display device comprising: a first wiring that electrically connects a corresponding first pixel among the first pixels to a first pad, a second wiring that electrically connects a corresponding second pixel among the second pixels to a second pad, and a third wiring that electrically connects a corresponding third pixel among the third pixels to a third pad.
3. In Article 2, The first pad above includes a plurality of first pads electrically connected to each of the first pixels, and The second pad includes a plurality of second pads electrically connected to each of the second pixels, and The above third pads include a plurality of third pads electrically connected to each of the above third pixels, and A display device in which the number of the first pads is equal to the sum of the number of the second pads and the number of the third pads.
4. A substrate comprising a display area including a first area, a second area, and a third area, and a non-display area surrounding at least one side of the display area; First pixels disposed in the first region, second pixels disposed in the second region, and third pixels disposed in the third region; A pad portion provided in the above non-display area and electrically connected to each of the first to third pixels; A wiring section comprising a first wiring disposed in the non-display area between the pad section and the first area, a second wiring disposed in the non-display area between the pad section and the second area, and a third wiring disposed in the non-display area between the pad section and the second area and spaced apart from the second wiring; A bridge line extending in a first direction and disposed in common in the second and third regions; and It includes an extension wiring that extends in a second direction intersecting the first direction and is disposed in the second area and electrically connected to the bridge line, The above extension wiring is electrically connected to the above third wiring, and The first region includes a first pixel region where each of the first pixels is located and a first dummy region located between first pixel regions adjacent in the first direction, and The second region includes a second pixel region where each of the second pixels is located and a second dummy region located between the second pixel regions adjacent in the first direction, and A display device comprising a third region, wherein the third region includes a third pixel region where each of the third pixels is located and a third dummy region located between the third pixel regions adjacent in the first direction.
5. In Paragraph 4, The first pixel area, the second pixel area, and the third pixel area have the same size as each other, A display device in which the first dummy area, the second dummy area, and the third dummy area have the same size as each other.
6. In Paragraph 4, A first signal wiring electrically connected to the first wiring is located in each of the first pixel area and the first dummy area, and A second signal wiring electrically connected to the second wiring is located in the second pixel area, and In the above second dummy area, the extension wiring electrically connected to the above third wiring is located, and A third signal wiring is located in the above third pixel area and is electrically connected to the extension wiring through the bridge line, and A display device in which a dummy line spaced apart from the third signal wiring is located in the third dummy area.
7. In Article 6, A display device comprising the first signal wiring, the second signal wiring, the third signal wiring, the extension wiring, and the dummy line, provided on the same layer and containing the same material.
8. In Article 7, Each of the above first to third pixels is, A pixel circuit layer located on the substrate and comprising at least one transistor; and It includes a display element layer comprising a light-emitting element located on the pixel circuit layer and electrically connected to the transistor, and A display device in which the pixel circuit layer comprises at least one insulating layer and at least one conductive layer.
9. In Article 8, The above at least one insulating layer is, A buffer layer disposed on the above substrate; A gate insulating layer disposed on the above buffer layer; An interlayer insulating layer disposed on the gate insulating layer; and It includes a passivation layer disposed on the interlayer insulation layer above, and The above at least one conductive layer is, A first conductive layer disposed between the substrate and the buffer layer; A second conductive layer disposed on the gate insulating layer; and A display device comprising a third conductive layer disposed on the interlayer insulating layer.
10. In Article 9, The first conductive layer comprises the first signal wiring, the second signal wiring, the third signal wiring, the extension wiring, and the dummy line, and A display device comprising the bridge line, wherein the third conductive layer above.
11. In Article 10, A display device in which the extension wiring and the third signal wiring are electrically connected through the bridge line.
12. In Article 11, In the second region above, the extension wiring is electrically connected to one region of the bridge line through a first contact portion that sequentially penetrates the buffer layer, the gate insulating layer, and the interlayer insulating layer, and A display device in which, in the third region, the third signal wiring is electrically connected to another region of the bridge line through a second contact portion that sequentially penetrates the buffer layer, the gate insulating layer, and the interlayer insulating layer.
13. In Article 12, A display device in which, when viewed in a planar view, the first contact portion and the second contact portion are located on the same line along the first direction.
14. In Article 13, A display device further comprising an auxiliary wiring located in the same column as the extension wiring in the second region and electrically separated from the extension wiring.
15. In Article 14, A display device in which the above auxiliary wiring is provided on the same layer as the above extension wiring and comprises the same material.
16. In Article 9, A first anti-static unit disposed in the non-display area between the pad portion and the first area; A second anti-static unit disposed in the non-display area between the pad portion and the second area; and It includes a common line that extends in the first direction and is commonly provided in the non-display area, The first electrostatic discharge prevention unit is electrically connected to the common line and the first wiring, and The above second electrostatic discharge protection unit is a display device electrically connected to the above common line and the above second wiring.
17. In Article 16, A display device comprising at least one discharge transistor, wherein the first and second electrostatic discharge protection units are described above.
18. In Article 9, The display element layer of each of the first to third pixels above is, A first alignment electrode and a second alignment electrode spaced apart from each other on the pixel circuit layer; The light-emitting element disposed between the first alignment electrode and the second alignment electrode; A first pixel electrode electrically connected to one end of the light-emitting element and the first alignment electrode; and A display device comprising a second pixel electrode electrically connected to the other end of the light-emitting element and the second alignment electrode.
19. In Article 18, Each of the above first to third pads is, A first pad electrode disposed on the interlayer insulating layer above; A second pad electrode disposed on the first pad electrode and electrically connected to the first pad electrode; A third pad electrode disposed on the second pad electrode with the first insulating layer in between and electrically connected to the second pad electrode; and A display device comprising a third pad electrode positioned with respect to a second insulating layer and a fourth pad electrode electrically connected to the third pad electrode.
20. An electronic device comprising the display device according to claim 1.

Description

Display Device The present invention relates to a display device. With the recent rise in interest in information displays, research and development on display devices is continuously being carried out. FIG. 1 is a perspective view schematically illustrating a light-emitting element according to an embodiment. Figure 2 is a schematic cross-sectional view of the light-emitting element of Figure 1. FIGS. 3 and FIGS. 4 are schematic plan views illustrating a display device according to an embodiment. FIGS. 5 and FIGS. 6 are circuit diagrams showing the electrical connection relationships of the components included in each of the first, second, and third pixels shown in FIGS. 3, according to various embodiments. FIG. 7 is a plan view schematically illustrating a display device according to an embodiment. FIGS. 8 to 11 are schematic cross-sectional views showing the stacked structure of each of the first, second, and third pixels shown in FIG. 7. FIG. 12 is a schematic cross-sectional view along lines I to I' of FIG. 3. FIG. 13 is a schematic plan view of the EA1 area of FIG. 3 enlarged. FIG. 14 is a schematic plan view of the EA2 area of FIG. 13 enlarged. FIG. 15 is a schematic plan view of the EA4 area of FIG. 14 enlarged. FIG. 16 is a schematic plan view illustrating the first electrostatic discharge prevention unit of FIG. 15 according to another embodiment. FIG. 17 is a schematic plan view showing a pixel circuit layer of a first region according to an embodiment. FIG. 18 is a schematic plan view showing the display element layer of the first region according to an embodiment. FIGS. 19 and FIGS. 20 are schematic plan views of the EA3 area of FIG. 13 enlarged. FIG. 21 is a schematic cross-sectional view along lines II to II' of FIG. 19. FIG. 22 is a schematic cross-sectional view along lines III to III' of FIG. 19. FIG. 23 is a schematic cross-sectional view along lines IV to IV' of FIG. 19. FIG. 24 is a schematic cross-sectional view along lines V to V' of FIG. 19. The present invention is capable of various modifications and may take various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. However, this is not intended to limit the invention to the specific disclosed forms, and it should be understood that the invention includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention. In describing each drawing, similar reference numerals have been used for similar components. In the attached drawings, the dimensions of the structures are depicted enlarged from their actual size for clarity of the invention. Terms such as "first," "second," etc., may be used to describe various components, but said components should not be limited by said terms. These terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the invention, the first component may be named the second component, and similarly, the second component may be named the first component. In this application, terms such as "comprising" or "having" are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof. Furthermore, when a part such as a layer, film, region, or plate is described as being "on" another part, this includes not only cases where it is "immediately above" the other part, but also cases where there is another part in between. Additionally, in this specification, when a part such as a layer, film, region, or plate is described as being formed "on" another part, the direction in which it is formed is not limited to the upward direction only, but includes cases where it is formed in the lateral or downward direction. Conversely, when a part such as a layer, film, region, or plate is described as being "below" another part, this includes not only cases where it is "immediately below" the other part, but also cases where there is another part in between. In the present application, when it is stated that "a certain component (e.g., 'first component') is (operationally or communicatively) coupled with/to" or "connected to" another component (e.g., 'second component'), it should be understood that the said certain component may be directly connected to the said other component or connected through the said other component (e.g., 'third component'). On the other hand, when it is stated that a certain component (e.g., 'first component') is "directly connected" or "directly connected" to another component (e.g., 'second component'), it may be understood that no other component (e.g., 'third component') exists between the said certain component and the said other component. Hereinafter, preferred embodiments of the