KR-20260065628-A - Display device, electronic device, optical device and vehicle

Abstract

One embodiment relates to a display device, electronic device, optical device, and vehicle in which the circuit integration density of a gate driver can be improved, comprising: a substrate; a pixel transistor on the substrate; an anode electrode disposed on the pixel transistor and connected to the pixel transistor; a light-emitting layer on the anode electrode; a pixel defining film on the light-emitting layer; a cathode electrode on the light-emitting layer and the pixel defining film; and a gate driver disposed in a non-display area of the substrate and connected to the pixel transistor, wherein the gate driver comprises a first transistor and a second transistor disposed on the substrate, and the first gate electrode of the first transistor and the second gate electrode of the second transistor are directly connected to each other.

Inventors

• 문희주
• 정수교
• 조재원
• 김현준
• 송희림
• 임한별

Assignees

• 삼성디스플레이 주식회사

Dates

Publication Date

20260511

Application Date

20241029

Claims (20)

1. Substrate; Pixel transistor on the above substrate; An anode electrode disposed on the pixel transistor and connected to the pixel transistor; A light-emitting layer on the anode electrode above; Pixel defining film on the light-emitting layer above; A cathode electrode on the light-emitting layer and the pixel definition film; and It includes a gate driver disposed in a non-display area of the above substrate and connected to the pixel transistor, The gate driving unit includes a first transistor and a second transistor disposed on the substrate, and A display device in which the first gate electrode of the first transistor and the second gate electrode of the second transistor are directly connected to each other.
2. In Article 1, The first transistor above is, A first source electrode, a first drain electrode, and a first channel region disposed on a first active layer on the substrate; and A display device comprising a first gate electrode disposed on the first active layer so as to overlap with the first channel region of the first active layer.
3. In Article 2, The second transistor mentioned above is, A second source electrode, a second drain electrode, and a second channel region disposed on a second active layer on the substrate; and A display device comprising a second gate electrode disposed on the second active layer so as to overlap with the second channel region of the second active layer.
4. In Paragraph 3, A display device in which the second gate electrode is directly connected to the first gate electrode through a contact hole penetrating an insulating layer.
5. In Paragraph 3, The second transistor further includes an opposing gate electrode disposed on the substrate so as to overlap with the second channel region of the second active layer, and The second active layer is a display device disposed between the opposing gate electrode and the second gate electrode.
6. In Article 5, A display device in which the second gate electrode is directly connected to the opposing gate electrode through a contact hole penetrating an insulating layer.
7. In Article 2, A display device in which the first active layer is made of a material including low-temperature polycrystalline silicon.
8. In Paragraph 3, The above second active layer is an oxide-based active layer in the display device.
9. In Article 8, A display device in which the second active layer is made of a material comprising indium-gallium-zinc oxide or indium-gallium-zinc-tin oxide.
10. In Article 1, The gate driving unit further comprises a capacitor directly connected to the second gate electrode of the second transistor.
11. In Article 10, The above capacitor is, A first capacitor electrode disposed on the substrate and directly connected to the second gate electrode; and A display device comprising a second capacitor electrode disposed on the first capacitor electrode so as to overlap with the first capacitor electrode.
12. In Article 11, A display device in which the second gate electrode is directly connected to the first capacitor electrode through a contact hole penetrating the insulating layer.
13. In Paragraph 3, A display device in which the first active layer and the second active layer are disposed on different layers.
14. In Article 1, The first transistor above is a p-type transistor, and The above second transistor is an n-type transistor, which is a display device.
15. It includes a display device that provides a screen, The above display device is, Substrate; Pixel transistor on the above substrate; An anode electrode disposed on the pixel transistor and connected to the pixel transistor; A light-emitting layer on the anode electrode above; Pixel defining film on the light-emitting layer above; A cathode electrode on the light-emitting layer and the pixel definition film; and It includes a gate driver disposed in a non-display area of the above substrate and connected to the pixel transistor, The gate driving unit includes a first transistor and a second transistor disposed on the substrate, and An electronic device in which the first gate electrode of the first transistor and the second gate electrode of the second transistor are directly connected to each other.
16. In Article 15, The first transistor above is, A first source electrode, a first drain electrode, and a first channel region disposed on a first active layer on the substrate; and An electronic device comprising a first gate electrode disposed on the first active layer so as to overlap with the first channel region of the first active layer.
17. In Article 16, The second transistor mentioned above is, A second source electrode, a second drain electrode, and a second channel region disposed on a second active layer on the substrate; and An electronic device comprising a second gate electrode disposed on the second active layer so as to overlap with the second channel region of the second active layer.
18. In Article 17, The above second gate electrode is an electronic device directly connected to the first gate electrode through a contact hole penetrating an insulating layer.
19. In Article 17, The second transistor further includes an opposing gate electrode disposed on the substrate so as to overlap with the second channel region of the second active layer, and The second active layer is an electronic device disposed between the opposing gate electrode and the second gate electrode.
20. In Article 19, The above second gate electrode is an electronic device directly connected to the opposing gate electrode through a contact hole penetrating an insulating layer.

Description

Display device, electronic device, optical device and vehicle One embodiment relates to a display device, and in particular to a display device, electronic device, optical device, and vehicle in which the circuit integration of a gate driver can be improved. An organic light emitting display apparatus includes a display element whose brightness changes with current, such as an organic light emitting diode. Such organic light-emitting display devices include multiple pixels that provide different colors of light. FIG. 1 is a perspective view showing a display device according to one embodiment. FIG. 2 is a cross-sectional view showing a display device according to one embodiment. FIG. 3 is a plan view showing a display portion of a display device according to one embodiment. FIG. 4 is a block diagram showing a display panel and a display driving unit according to one embodiment. FIG. 5 is a circuit diagram for one pixel of a display device according to one embodiment. FIG. 6 is a cross-sectional view of a display device according to one embodiment. FIG. 7 is a circuit diagram of a gate driving unit according to one embodiment. FIG. 8 is an array diagram of transistors of a gate driving unit according to one embodiment. Figure 9 is a cross-sectional view along the line I-I' of Figure 8. FIG. 10 is an array diagram of transistors and capacitors of a gate driving unit according to one embodiment. Figure 11 is a cross-sectional view along the line II-II' of Figure 10. FIG. 12 is a perspective view showing an electronic device to which a display device according to one embodiment is applied. FIG. 13 is a perspective view showing a head-mounted display device according to one embodiment. FIG. 14 is an exploded perspective view showing an example of the head-mounted display device of FIG. 13. FIG. 15 is an exemplary drawing showing an instrument panel and a center fascia of a vehicle including display devices according to one embodiment. The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. When elements or layers are referred to as being "on" another element or layer, this includes cases where another layer or element is interposed directly on or in the middle of another element. Throughout the specification, the same reference numerals refer to the same components. Shapes, sizes, ratios, angles, numbers, etc., disclosed in the drawings for describing embodiments are exemplary and therefore the invention is not limited to the depicted details. Although terms such as "first," "second," etc., are used to describe various components, it goes without saying that these components are not limited by these terms. These terms are used merely to distinguish one component from another. Therefore, it goes without saying that the first component mentioned below may also be the second component within the technical scope of the present invention. The features of each of the various embodiments of the present invention may be combined or combined with one another, either partially or wholly, and may technically enable various interlocking and operation. Each embodiment may be implemented independently of one another or may be implemented together in an associated relationship. Specific embodiments will be described below with reference to the attached drawings. FIG. 1 is a perspective view showing a display device according to one embodiment. Referring to FIG. 1, the display device (10) can be applied to portable electronic devices such as mobile phones, smartphones, tablet personal computers, mobile communication terminals, electronic notebooks, e-books, portable multimedia players (PMPs), navigation systems, and ultra mobile PCs (UMPCs). For example, the display device (10) can be applied to a television, laptop, monitor, billboard, or display unit of the Internet of Things (IOT). As another example, the display device (10) can be applied to wearable devices such as smart watches, watch phones, glasses displays, and head-mounted displays (HMDs). The display device (10) may be formed in a planar shape similar to a rectangle. For example, the display device (10) may have a planar shape similar to a rectangle having a short side in the first direction (DR1) and a long side in the second direction (DR2). The corner where the short side in the first direction (DR1) and the long side in the second direction (DR2) meet may be formed rounded to have a predetermined curvature or formed at a right angle. The pla