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EP-4739054-A1 - DISPLAY DEVICE

EP4739054A1EP 4739054 A1EP4739054 A1EP 4739054A1EP-4739054-A1

Abstract

The embodiments of the present disclosure relate to a display device (100), and more particularly, to a display device (100) capable of minimizing luminance variation caused by differences in wiring resistance within an optical area (OA) by differentially arranging a plurality of data connection lines (DCL1, DCL2), including a first connection line (DCL1) and a second connection line (DCL2) having a lower resistance than the first connection line (DCL1), in the optical area (OA).

Inventors

  • KIM, TAEHWI
  • NA, SEHWAN
  • Ahn, Soonsung

Assignees

  • LG Display Co., Ltd.

Dates

Publication Date
20260506
Application Date
20250829

Claims (15)

  1. A display device (100) comprising: a display panel (110) including an optical area (OA) having a plurality of transmissive areas (TA) and a plurality of first emission areas (EA1), a general area (NA) disposed outside the optical area (OA) and having a plurality of second emission areas (EA), and a plurality of data connection lines (DCL1, DCL2) disposed in a first direction in at least one of the plurality of transmissive areas (TA); and an optoelectronic device (11, 12) disposed below the display panel (110) and overlapping the optical area (OA), wherein the plurality of data connection lines (DCL1, DCL2) includes at least one first connection line (DCL1) disposed in a first area (A1) and a second area (A2) of the optical area (OA), and at least one second connection line (DCL2) disposed in the first area (A1) and having a lower resistance than the at least one first connection line (DCL1).
  2. The display device (100) of claim 1, wherein the second area (A2) is an area located at each of a first side and a second side of the first area (A1).
  3. The display device (100) of claim 1 or 2, wherein the first area (A1) is divided into an upper area (UA), an intermediate area (CA), and a lower area (LA), and the at least one second connection line (DCL2) is disposed in at least one of the upper area (UA) and the lower area (LA).
  4. The display device (100) of claim 3, wherein the at least one first connection line (DCL1) is disposed in the intermediate area (CA), and/or wherein the at least one first connection line (DCL1) is disposed in at least one of the upper area (UA) and the lower area (LA).
  5. The display device (100) of any of claims 1 to 4, wherein at least one of the plurality of data connection lines (DCL1, DCL2) disposed in the first area (A1) and at least one of the plurality of data connection lines (DCL1, DCL2) disposed in the second area (A2) have different wiring widths.
  6. The display device (100) of any of claims 1 to 5, wherein at least one of the plurality of data connection lines (DCL1, DCL2) disposed in the first area (A1) has a larger wiring width than at least one of the plurality of data connection lines (DCL1, DCL2) disposed in the second area (A2).
  7. The display device (100) of any of claims 1 to 6, wherein at least one of the plurality of data connection lines (DCL1, DCL2) disposed in the first area (A1) and at least one of the plurality of data connection lines (DCL1, DCL2) disposed in the second area (A2) have different wiring lengths.
  8. The display device (100) of any of claims 1 to 7, wherein at least one of the plurality of data connection lines (DCL1, DCL2) disposed in the second area (A2) are lines with curves or angular turns.
  9. The display device (100) of claim 8, wherein the lines with curves or angular turns include a zigzag pattern.
  10. The display device (100) of any of claims 1 to 9, wherein at least one of the plurality of data connection lines (DCL1, DCL2) is disposed between a planarization layer (PLN1, PLN2) and a source-drain electrode pattern (SD1, SD2).
  11. The display device (100) of any of claims 1 to 10, whererin at least one of the plurality of data connection lines (DCL1, DCL2) is disposed under a source-drain electrode pattern (SD1, SD2), wherein, preferably, the at least one of the plurality of data connection lines (DCL1, DCL2) is disposed between a plurality of interlayer insulating films (ILD2, ILD3).
  12. The display device (100) of any of claims 1 to 9, wherein the display panel (110) comprises: a plurality of data sub-lines (DSL) disposed in the first direction in the plurality of first emission areas (EA1) and disposed in a different layer from the at least one first connection line (DCL1); and at least one connection pattern (CP) electrically connecting at least one of the plurality of data sub-lines (DSL) to a corresponding line among the at least one first connection line (DCL1), wherein, preferably, the plurality of data sub-lines (DSL) have a lower resistance than the at least one first connection line (DCL1).
  13. The display device (100) of any of claims 1 to 12, wherein the at least one first connection line (DCL1) has a high light transmittance.
  14. The display device (100) of claim 12, wherein the display panel (110) comprises: a substrate (SUB); a transistor layer (TRL) disposed on the substrate (SUB) and including at least one transistor (DRT) and a plurality of interlayer insulating films (ILD1, ILD2, ILD3); and a plurality of planarization layers (PLN1, PLN2) disposed on the transistor layer (TRL), wherein the plurality of data sub-lines (DSL) is disposed on any one of the plurality of planarization layers (PLN1, PLN2).
  15. The display device (100) of claim 14, wherein the at least one first connection line (DCL1) is disposed on any one of the plurality of interlayer insulating films (ILD1, ILD2, ILD3), and/or wherein the at least one second connection line (DCL2) is disposed on any one of the plurality of planarization layers (PLN1, PLN2).

Description

TECHNICAL FIELD The present disclosure relates to a display device. BACKGROUND With advancements in technology, display devices may provide not only image display functions but also camera functions and various sensing capabilities. To achieve this, display devices are required to be equipped with optoelectronic devices such as cameras and sensing sensors (also referred to as light-receiving devices or sensors). Since optoelectronic devices need to receive light from the front of the display device, they must be installed in locations that facilitate light reception. Accordingly, conventional designs have required cameras (camera lenses) and sensing sensors to be exposed on the front of the display device. As a result, the bezel of the display panel becomes wider, or optoelectronic devices are positioned in areas where a notch or a physical hole is formed within the display area of the display panel. In other words, as optoelectronic devices such as cameras and sensing sensors, which receive light from the front to perform their designated functions, are incorporated into display devices, the bezel on the front of the display device may become larger, or design constraints may arise for the front of the display device. Additionally, when a display device includes optoelectronic devices, the structural configuration accommodating these devices may lead to unintended degradation in image quality. SUMMARY The embodiments of the present disclosure may provide a display device in which an optoelectronic device is not exposed on the front of the display device, while still allowing the optoelectronic device, disposed below the display panel, to properly receive light through a light-transmitting structure. The embodiments of the present disclosure may provide a display device that enables a high transmittance optical area through differential design of data connection lines while minimizing luminance variation caused by differences in line resistance within the optical area. The embodiments of the present disclosure may provide a display device that ensures luminance uniformity through differential design of data connection lines, thereby improving optical characteristics and yield while enabling low-power operation. The embodiments of the present disclosure may provide a display device that minimizes luminance variation by optimizing the design of the material, thickness, and wiring length of data connection lines. Embodiments of the present disclosure may provide a display device according to claim 1. Further embodiments are described in the dependent claims. The embodiments of the present disclosure may provide a display device comprising: a display panel comprising an optical area having a plurality of transmissive areas and a plurality of first emission areas, a general area disposed outside the optical area and having a plurality of second emission areas, and a plurality of data connection lines disposed in a first direction in at least one of the plurality of transmissive areas; and an optoelectronic device disposed below the display panel and overlapping the optical area. The plurality of data connection lines includes at least one first connection line disposed in a first area and a second area of the optical area, and at least one second connection line disposed in the first area and having a lower resistance than the first connection line. The embodiments of the present disclosure may provide a display device comprising: a substrate including a plurality of transmissive areas and a plurality of emission areas; a transistor layer disposed on the substrate and including at least one transistor and a plurality of interlayer insulating films; a plurality of planarization layers disposed on the transistor layer; and a light-emitting device layer including a plurality of data sub-lines, which are disposed on any one of the plurality of planarization layers in the plurality of emission areas and electrically connected to at least one of a first connection line and at least one of a second connection line, and a plurality of light-emitting devices, which are disposed on the plurality of planarization layers and correspond to each of the plurality of emission areas. According to the embodiments of the present disclosure, a display device may be provided in which an optoelectronic device is not exposed on the front of the display device, while still allowing the optoelectronic device, disposed below the display panel, to properly receive light through a light-transmitting structure. According to the embodiments of the present disclosure, a display device may be provided that enables a high transmittance optical area through differential design of data connection lines while minimizing luminance variation caused by differences in line resistance within the optical area. According to the embodiments of the present disclosure, a display device may be provided that ensures luminance uniformity through differential d