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US 11,537,233 B2Granted
Touch display device with routing lines on an inclined part of the encapsulation layer
AssigneeLG Display Co., Ltd.
InventorsYoungSung Kwon, JungWoo Han, HongYun Kang
Life of this patent
Estimating the term…
Abstract
Embodiments of the present disclosure relate to a touch display device and, more particularly, to a touch display device having a structure capable of enabling efficient testing and reducing the number of test pads.
Claims9
A touch display device, comprising:
- a substrate having thereon an active area and a non-active area adjacent to the active area, the active area displaying an image, the non-active area including a driving pad area, the active area having a first side and a second side opposite the second side, a third side between the first and the second sides;
- a transistor disposed on the substrate;
- a pixel electrode connected to either a source electrode or a drain electrode of the transistor;
- a common electrode disposed on the pixel electrode;
- an encapsulation layer disposed on the common electrode, the encapsulation layer having an inclined surface;
- a first touch sensor metal layer on the encapsulation layer;
- a plurality of touch electrodes disposed in the first touch sensor metal layer, the plurality of touch electrodes including a first group of touch electrodes arranged in a first direction, the first group of touch electrodes including a first touch electrode;
- a plurality of touch pads disposed on the driving pad area in the non-active area;
- a plurality of touch routing lines that electrically connect the plurality of touch electrodes to the plurality of touch pads and descend along the inclined surface of the encapsulation layer to extend to the driving pad area while being connected to the plurality of touch electrodes in the active area, the plurality of touch routing lines including a front line and a back line electrically connected to the first touch electrode of the first group of touch electrodes arranged in the first direction, the front line extending towards the first side of the active area to electrically connect to the first touch electrode, the back line bypassing an entire active area along the non-active area at a periphery of the third side of the active area, the back line extending towards the first touch electrode from the second side of the active area;
- and
- a plurality of outer switches that are disposed further outward than the driving pad area, do not overlap the inclined surface of the encapsulation layer, and include one end electrically connected to the plurality of touch pads in the driving pad area and the other end in an electrically floating state.
8 more elements
A touch display device, comprising:
- a substrate having thereon an active area and a non-active area adjacent to the active area, the active area displaying an image, the non-active area including a driving pad area;
- a transistor disposed on the substrate;
- a pixel electrode connected to either a source electrode or a drain electrode of the transistor;
- a common electrode disposed on the pixel electrode;
- an encapsulation layer disposed on the common electrode, the encapsulation layer having an inclined surface;
- a first touch sensor metal layer on the encapsulation layer;
- a plurality of touch electrodes disposed in the first touch sensor metal layer;
- a plurality of touch pads disposed on the driving pad area in the non-active area;
- a plurality of touch routing lines that electrically connect the plurality of touch electrodes to the plurality of touch pads and descend along the inclined surface of the encapsulation layer to extend to the driving pad area while being connected to the plurality of touch electrodes in the active area;
- and
- a plurality of outer switches that are disposed further outward than the driving pad area, do not overlap the inclined surface of the encapsulation layer, and include one end electrically connected to the plurality of touch pads in the driving pad area and the other end in an electrically floating state,
- wherein
- the plurality of touch routing lines include a first touch routing line electrically connected to any first touch electrode among the plurality of touch electrodes;
- wherein the first touch routing line includes a front line and a back line that are branched at a first touch pad;
- wherein the front line bypasses a left routing area or a right routing area, located on a left outer periphery or a right outer periphery of the active area and extends directly into the active area through a link area located on an upper outer periphery of the active area, and is electrically connected to the first touch electrode through a front contact hole;
- and
- wherein the back line enters the left routing area or the right routing area and extends into the active area through a lower routing area located on a lower outer periphery of the active area, and is electrically connected to the first touch electrode through a back contact hole.
14 more elements
Dependencies are inferred from the claim text.