Search

EP-4300273-B1 - DISPLAY DEVICE

EP4300273B1EP 4300273 B1EP4300273 B1EP 4300273B1EP-4300273-B1

Inventors

  • Park, Yong- Hwan
  • Ko, Gyung- Min
  • KIM, EUNYOUNG
  • BANG, GYEONGNAM
  • LEE, SEONGJUN
  • HAN, Jeongyun

Dates

Publication Date
20260506
Application Date
20230616

Claims (14)

  1. A display device (DD) comprising: a display panel (DP) divided into a display area (DA) and a non-display area (NDA); and an input sensing unit (ISP) disposed on the display panel (DP) and divided into an active area (AA-I) overlapping the display area (DA) and a non-active area (NAA-I) overlapping the non-display area (NDA), wherein the input sensing unit (ISP) is configured to detect touch by sensing a change of electrostatic capacity of an input sensor of the input sensing unit (ISP), the input sensing unit (ISP) comprising: a plurality of sensing electrodes (TE) overlapping the active area (AA-I) and comprising a plurality of first sensing electrodes (TE1) extending in a first direction (DR1), and a plurality of second sensing electrodes (TE2) extending in a second direction (DR2) crossing the first direction (DR1); a plurality of first trace lines (TL1) respectively connected to the plurality of first sensing electrodes (TE1) and comprising an inside portion (TL1-IP1) overlapping a line overlap area (IPA) of the active area (AA-I) and having a structure including a plurality of mesh lines (MS); and a plurality of dummy electrode units (DME, DME') overlapping a dummy area (DMA) of the active area (AA-I) and spaced apart from the plurality of first sensing electrodes (TE1) and the plurality of second sensing electrodes (TE2) along the second direction (DR2) so to be floated, the plurality of sensing electrodes (TE) and the dummy electrode units (DME, DME') have a mesh structure include a plurality of mesh lines (MS), wherein the active area (AA-I) includes a main area (AA-I1) with the plurality of sensing electrodes (TE) disposed therein, the dummy area (DMA), and the line overlap area (IPA), wherein the dummy area (DMA) is adjacent to the plurality of sensing electrodes (TE, TE1, TE2) in the second direction (DR2) and does not overlap the main area with the plurality of sensing electrodes (TE, TE1, TE2) in the first direction (DR1), and wherein the dummy area (DMA) is adjacent to the line overlap area (IPA) in the first direction.
  2. The display device of claim 1, wherein the active area (AA-I) has a short side extending in the first direction (DR1) and a long side extending in the second direction (DR2), and the inside portion (TL1-IP1) overlaps a comer part (AA-C) at which the short side is connected with the long side.
  3. The display device of claim 1 or 2, wherein the plurality of first trace lines (TL1) comprise: a first side trace line (TL1-1) connected to a first side (TE1-S1) of the plurality of first sensing electrodes (TE1); and a second side trace line (TL1-2) connected to a second side (TE1-S2) of the plurality of first sensing electrodes (TE1) spaced apart from the first side (TE1-S1) along the first direction (DR1).
  4. The display device of claim 3, wherein the first side trace line (TL1-1) comprises a first inside portion (TL1-IP1) overlapping a first line overlap area (IPA1) of the line overlap area (IPA), the second side trace line (TL1-2) comprises a second inside portion (TL1-IP2) overlapping a second line overlap area (IPA2) of the line overlap area (IPA)spaced apart from the first line overlap area (IPA1) in the first direction (DR1), and the dummy area (DMA) is disposed between the first line overlap area (IPA1) and the second line overlap area (IPA2).
  5. The display device of one of the preceding claims, wherein the input sensing unit (ISP) further comprises: a plurality of second trace lines (TL2) respectively connected to the plurality of second sensing electrodes (TE2), and at least partially overlapping the active area (AA-I); and the dummy electrode units (DME, DME') overlap a portion of the plurality of second trace lines (TL2) in the first direction (DR1).
  6. The display device of claim 5, wherein an inside portion of the plurality of second trace lines (TL2) is disposed in the line overlap area (IPA), some of the plurality of first trace lines (TL1) and some of the plurality of second trace lines (TL2) are disposed in the line overlap area (IPA), and a number of the plurality of second trace lines (TL2) partially disposed in the line overlap area (IPA) is smaller than 30% of a number of the plurality of first trace lines (TL1) partially disposed in the line overlap area (IPA).
  7. The display device of claim 5 or 6, wherein the plurality of second sensing electrodes (TE2) comprise a plurality of unit sensing electrodes (TE2-U) to which the plurality of second trace lines (TL2) are connected and which are arranged along the first direction (DR1), wherein a cutting part (CP) is defined between the dummy electrode unit (DME, DME') and the plurality of unit sensing electrodes (TE2-U), and respective widths (d1) of the plurality of unit sensing electrodes (TE2-U) in the second direction (DR2) are identical.
  8. The display device of claim 7, wherein the plurality of second sensing electrodes (TE2) further comprise a plurality of main sensing electrodes (TE2-M) spaced apart from the plurality of unit sensing electrodes (TE2-U) along the second direction (DR2), and a width (d2) of each of the plurality of main sensing electrodes (TE2-M) in the second direction (DR2) is larger than that of each of the plurality of unit sensing electrodes (TE2-U) in the second direction (DR2).
  9. The display device of one of the preceding claims, wherein the plurality of sensing electrodes (TE, TE1, TE2) and the dummy electrode units (DME, DME') each have the mesh structure comprising a plurality of mesh lines (MS), and each of the plurality of mesh lines (MS) comprises: a first mesh line (ML1) extending in a first diagonal direction (DR4) between the first direction (DR1) and the second direction (DR2); and a second mesh line (ML2) extending from the first mesh line (ML1) in a second diagonal direction (DR5) crossing the first diagonal direction (DR4).
  10. The display device of claim 9, wherein the first mesh line (ML1) and the second mesh line (ML2) cross each other.
  11. The display device of one of the preceding claims, wherein the input sensing unit (ISP) comprises: a first sensing insulation layer (IIL1) directly disposed on the display panel (DP); a first sensing conductive layer (ICL1) disposed on the first sensing insulation layer (IIL1); a second sensing insulation layer (IIL2) disposed on the first sensing insulation layer (IIL1) and covering the first sensing conductive layer (ICL1); a second sensing conductive layer (ICL2) disposed on the second sensing insulation layer (IIL2); and a third sensing insulation layer (IIL3) disposed on the second sensing insulation layer (IIL2) and covering the second sensing conductive layer (ICL2).
  12. The display device of claim 11, wherein the plurality of first sensing electrodes (TE1) and the plurality of first trace lines (TL1) each are part of the second sensing conductive layer (ICL2) and are disposed on the second sensing insulation layer (IIL2).
  13. The display device of one of the preceding claims, wherein the inside portion (TL1-IP) has the mesh structure comprising the plurality of mesh lines (MS) comprising: a first mesh line (ML1) extending in a first diagonal direction (DR4) between the first direction (DR1) and the second direction (DR2); and a second mesh line (ML2) extending in a second diagonal direction (DR5) crossing the first diagonal direction (DR4).
  14. The display device of claim 13, wherein the plurality of mesh lines (MS) comprise: a 1a-th line (TL1-IPb1) included in an a-th trace line (TL1-IPb') among the plurality of first trace lines (TL1-IPa, TL1-IPb', TL1-IPc); and a 2a-th line (TL1-IPb2) included in the a-th trace line, and spaced apart from the 1a-th line (TL1-IPb1) along the first direction (DR1) and the second direction (DR2), wherein the 1a-th line (TL1-IPb1) is electrically connected with the 2a-th line (TL1-IPb2) through a connection part (CNP).

Description

BACKGROUND Embodiments of the present disclosure relate to a display device, and more particularly, to a display device with a reduced dead space and increased sensing performance. An electronic apparatus such as, for example, a smartphone, a digital camera, a notebook computer, a navigation device, a smart television or the like, which provides an image to a user, includes a display device that displays an image. The display device may include a display panel which generates and displays an image, and a keyboard, a mouse, or an input sensing unit as an input device. The input sensing unit, such as a touch panel, is disposed on the display panel and, when touched by a user, generates an input signal. The input signal generated in the touch panel may be provided to the display panel, and the display panel may provide a corresponding image in response to the received input signal. For instance, US 2022/035486 A1 is directed to an electronic apparatus including an input sensing panel integrally formed with the display panel and comprising a dummy pattern disposed between the first sensing patterns and the second sensing patterns. SUMMARY Embodiments of the present disclosure provide a display device in which the area of a portion of a trace line included in an input sensing unit, the portion being disposed in a surrounding region, is minimized or reduced, which may reduce a dead space. Embodiments of the present disclosure provide a display device including an input sensing unit in which a variation of sensitivity between sensing electrodes arranged in a predetermined direction is reduced, which may increase sensing performance. An embodiment of the inventive concept provides a display device according to claim 1. In an embodiment, the active area may have a short side extending in the first direction and a long side extending in the second direction, and the inside portion may overlap a corner part at which the short side is connected to the long side. In an embodiment, a plurality of first trace lines may include a first side trace line connected to a first side of the plurality of first sensing electrodes, and a second side trace line connected to a second side spaced apart from the first side along the first direction. In an embodiment, the first side trace line may include a first inside portion overlapping the active area, the second side trace line may include a second side portion overlapping the active area and spaced apart from the first inside portion in the first direction, and the dummy electrode unit may be disposed between the first inside portion and the second inside portion. In an embodiment, the input sensing unit may include a plurality of second trace lines respectively connected to the plurality of second sensing electrodes and at least partially overlapping the active area, and the dummy electrode unit overlaps a portion of the plurality of second trace lines in the first direction. In an embodiment, the active area may include a line overlap area in which the inside portion and the portion of the plurality of second trace lines, which overlap the dummy electrode unit in the first direction, are disposed. Some of the plurality of first trace lines and some of the plurality of second trace lines may be disposed in the line overlap area, and a number of the plurality of second trace lines partially disposed in the line overlap area may be smaller than about 30% of a number of the plurality of first trace lines partially disposed in the line overlap area. In an embodiment, the plurality of second sensing electrodes may include a plurality of unit sensing electrodes arranged along the first direction to which the plurality of second trace lines are connected, and respective widths of the plurality of unit sensing electrodes in the second direction may be substantially identical. In an embodiment, a cutting part may be defined between the dummy electrode unit and the plurality of unit sensing electrodes. In an embodiment, the plurality of second sensing electrodes may further include a plurality of main sensing electrodes spaced apart from the plurality of unit sensing electrodes along the second direction, and a width of each of the plurality of main sensing electrodes in the second direction may be larger than that of each of the plurality of unit sensing electrodes in the second direction. Each of the plurality of sensing electrodes and the dummy electrode unit has a mesh structure including a plurality of mesh lines. Each of the plurality of mesh lines may include a first mesh line extending in a first diagonal direction between the first direction and the second direction, and a second mesh line extending from the first mesh line in a second diagonal direction crossing the first diagonal direction. In an embodiment, the first mesh line and the second mesh line may cross each other. In an embodiment, the input sensing unit may include a first sensing insulation layer directly disposed on