KR-20260066883-A - DISPLAY DEVICE

Abstract

Embodiments of the present disclosure may provide a display device comprising: a light-transmitting optical region, an optical bezel region outside the optical region, and a general region outside the optical bezel region; a substrate overlapping the optical bezel region and the general region; an electronic device overlapping the optical region and overlapping a portion of the optical bezel region; a first transistor and a second transistor disposed in the optical bezel region; a first light-emitting element disposed in the optical bezel region and connected to the first transistor; and a second light-emitting element disposed in the optical region and connected to the second transistor; wherein the first transistor, the second transistor, and the first light-emitting element are disposed on the substrate, and the second light-emitting element is disposed on the electronic device.

Inventors

• 조정식
• 김철호

Assignees

• 엘지디스플레이 주식회사

Dates

Publication Date

20260512

Application Date

20241105

Claims (20)

1. A display area comprising an optical region capable of transmitting light, an optical bezel region outside the optical region, and a general region outside the optical bezel region; A substrate that overlaps the optical bezel area and the general area; An electronic device that overlaps with the optical region and overlaps with a part of the optical bezel region; A first transistor and a second transistor disposed in the optical bezel area; A first light-emitting element disposed in the optical bezel area and connected to the first transistor; and A second light-emitting element disposed in the optical region and connected to the second transistor; comprising The first transistor, the second transistor, and the first light-emitting element are disposed on the substrate, and The second light-emitting element is a display device disposed on the electronic device.
2. In paragraph 1, A first connecting electrode that electrically connects the anode electrode of the first light-emitting element and one electrode of the first transistor; A common electrode disposed on the substrate and to which a cathode voltage is applied; and A display device further comprising: a second connecting electrode that electrically connects the cathode electrode of the first light-emitting element and the common electrode.
3. In paragraph 2, A display device wherein the first connecting electrode and the second connecting electrode comprise a transparent conductive material.
4. In paragraph 1, A common electrode disposed on the above substrate and to which a cathode voltage is applied; A first transparent wiring located on the electronic device and disposed in the optical region and the optical bezel region; and It further includes a second transparent wiring located on the electronic device and disposed in the optical region and the optical bezel region; The anode electrode of the second light-emitting element is electrically connected to one electrode of the second transistor through the first transparent wiring, and A display device in which the cathode electrode of the second light-emitting element is electrically connected to the common electrode through the second transparent wiring.
5. In paragraph 4, A display device wherein the first transparent wiring and the second transparent wiring comprise a transparent conductive material.
6. In paragraph 4, A first via hole formed in the above substrate; A first conductive pattern located within the first via hole, which electrically connects one electrode of the second transistor and the first transparent wiring; A second via hole formed in the above substrate; and A display device that electrically connects the common electrode and the second transparent wiring, and further includes a second conductive pattern located within the second via hole.
7. In paragraph 6, The above substrate includes a first region and a second region surrounding the first region, and The electronic device comprises a third region and a fourth region surrounding the third region and located below the first region, and The first region and the fourth region overlap, and A display device in which the first via hole and the second via hole are located in the first region.
8. In paragraph 6, A first connection pad and a second connection pad formed on the respective upper surfaces of the first via hole and the second via hole; A first adhesive pad and a second adhesive pad formed on the respective lower surfaces of the first via hole and the second via hole; A first conductive pattern, which is a conductive material filled inside the first via hole; and A display device comprising: a second conductive pattern, which is a conductive material filled inside the second via hole.
9. In paragraph 1, Placed in the above general area, the above optical bezel area, and the above optical area, A display device further comprising a planarization layer located on the first light-emitting element and the second light-emitting element and comprising a transparent insulating material.
10. In paragraph 1, The above electronic device is a display device that is a camera or a sensing sensor that receives light and performs a predetermined operation.
11. In paragraph 1, A display device in which the first light-emitting element and the second light-emitting element are different types of LED (Light emitting diode) chips.
12. In Paragraph 11, The first light-emitting element is an LED chip with a lateral chip structure, and The above second light-emitting element is a display device in which the second light-emitting element is an LED chip with a flip chip structure.
13. In paragraph 4, It further includes a third light-emitting element disposed in the optical region, and The anode electrode of the third light-emitting element is electrically connected to one electrode of the second transistor through the first transparent wiring, and A display device in which the cathode electrode of the third light-emitting element is electrically connected to the common electrode through the second transparent wiring.
14. An upper substrate comprising a first region and a second region surrounding the first region; A lower substrate comprising a third region and a fourth region surrounding the third region and located below the first region; A first via hole and a second via hole formed in the first region of the upper substrate; A first transistor disposed on the upper substrate; A second transistor disposed on the upper substrate; A common electrode disposed on the upper substrate and to which a cathode voltage is applied; A first light-emitting element disposed on the upper substrate; A second light-emitting element disposed on the lower substrate; A first transparent wiring electrically connected to the anode electrode of the second light-emitting element; A first conductive pattern disposed within the first via hole and electrically connecting one electrode of the second transistor and the first transparent wiring; A second transparent wiring electrically connected to the cathode electrode of the second light-emitting element; and A second conductive pattern disposed within the second via hole and electrically connecting the common electrode and the second transparent wiring; comprising A display device wherein the first transparent wiring and the second transparent wiring comprise a transparent conductive material.
15. In Paragraph 14, A first connecting electrode connecting the anode electrode of the first light-emitting element and the first transistor; and It includes a second connecting electrode that connects the cathode electrode of the first light-emitting element and the common electrode, and A display device wherein the first connecting electrode and the second connecting electrode comprise a transparent conductive material.
16. In Paragraph 14, The above lower substrate is a display device that is an electronic device that receives light and performs a predetermined operation.
17. In Paragraph 14, The first light-emitting element is an LED chip with a lateral chip structure, and The above second light-emitting element is a display device in which the second light-emitting element is an LED chip with a flip chip structure.
18. In Paragraph 14, A display device further comprising a planarization layer located on the first light-emitting element and the second light-emitting element and comprising a transparent insulating material.
19. In Paragraph 14, It further includes a third light-emitting element disposed on the lower substrate, and The anode electrode of the third light-emitting element is electrically connected to one electrode of the second transistor through the first transparent wiring, and A display device in which the cathode electrode of the third light-emitting element is electrically connected to the common electrode through the second transparent wiring.
20. In Paragraph 14, A first connection pad and a second connection pad formed on the respective upper surfaces of the first via hole and the second via hole; and A display device comprising: a first adhesive pad and a second adhesive pad formed on the respective lower surfaces of the first via hole and the second via hole.

Description

Display Device The embodiments of the present disclosure relate to a display device. With technological advancements, display devices can provide not only image display functions but also shooting functions and various sensing functions. To this end, the display device must be equipped with optical electronic devices (also referred to as light receiving devices or sensors), such as cameras and sensing sensors. Since optoelectronic devices must receive light from the front of the display device, they must be installed in a location advantageous for light reception. Consequently, conventionally, cameras (camera lenses) and detection sensors had to be installed so that they were exposed on the front of the display device. As a result, the bezel of the display panel is widened, or a notch or physical hole is formed in the display area of the panel to install the camera or detection sensor. When a display device is equipped with an optical electronic device, unexpected image quality degradation may occur depending on the structure for equipping the optical electronic device, so it is necessary to improve resolution, secure a transmission area, and secure transmittance. FIG. 1 shows a display device according to embodiments of the present disclosure. FIG. 2 is a system configuration diagram of a display device according to embodiments of the present disclosure. FIG. 3 is a schematic diagram of a display panel according to embodiments of the present disclosure. FIG. 4 schematically illustrates an optical region and a general region around it in a display panel according to embodiments of the present disclosure. FIGS. 5A and 5B show light-emitting elements disposed in a general area, an optical bezel area, and an optical area, and pixel circuits for driving the light-emitting elements in a display panel according to embodiments of the present disclosure. FIG. 6 is a circuit diagram of a subpixel configuration of a display panel according to embodiments of the present disclosure. FIG. 7 is an equivalent circuit of a subpixel of a display panel according to embodiments of the present disclosure. FIGS. 8 and 9 are cross-sectional views taken along XY of FIG. 5b according to embodiments of the present disclosure. FIGS. 10a and FIGS. 10b are cross-sectional views showing the structure of a light-emitting element according to embodiments of the present disclosure. FIG. 11 is a plan view of an upper substrate and a lower substrate to show the formation locations of components according to embodiments of the present disclosure. FIG. 12 is a drawing in which FIG. 11 according to embodiments of the present disclosure is correlated with FIG. 8. FIG. 13 is a plan view of an upper substrate and a lower substrate to show the formation locations of components according to embodiments of the present disclosure. FIG. 14 is a drawing in which FIG. 13 according to embodiments of the present disclosure is correlated with FIG. 8. Hereinafter, some embodiments of the present disclosure will be described in detail with reference to the exemplary drawings. In assigning reference numerals to the components of each drawing, the same components may have the same reference numeral as much as possible, even if they are shown in different drawings. Furthermore, in describing the present disclosure, if it is determined that a detailed description of related known components or functions may obscure the essence of the present disclosure, such detailed description may be omitted. Where terms such as "comprising," "having," or "consisting of" are used in this specification, other parts may be added unless "only" is used. Where a component is expressed in the singular, it may include a plural unless there is a special explicit description otherwise. Additionally, terms such as first, second, A, B, (a), (b), etc., may be used to describe the components of the present disclosure. These terms are used merely to distinguish the components from other components, and the nature, order, sequence, or number of the components are not limited by such terms. In describing the positional relationship of components, where it is stated that two or more components are "connected," "combined," or "joined," it should be understood that while the two or more components may be directly "connected," "combined," or "joined," they may also be "connected," "combined," or "joined" with other components "intervened." Here, the other components may be included in one or more of the two or more components that are "connected," "combined," or "joined" with one another. In describing the temporal flow relationship regarding components, methods of operation, or methods of production, for example, when the temporal or sequential relationship is described using "after," "following," "next," or "before," it may include cases where the relationship is not continuous unless "immediately" or "directly" is used. Meanwhile, where numerical values or corresponding information regarding a