WHATIS CLAIMEDIS:
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`1.
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`A display apparatus comprising:
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`a substrate comprising a display area and a peripheral area outside the display area;
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`a thin-film transistor and a display element arranged in the display area;
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`a pad arranged in the peripheral area;
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`a contact layer electrically connected to the pad; and
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`a pad-protecting layer on the contact layer, the pad-protecting layer exposing a portion of
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`7
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`10
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`ll
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`the contact layer to the outside,
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`wherein the pad comprises:
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`a first pad layer connected to a connection wiring througha first contact hole; and
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`a second pad layer spaced apart from the first pad layer and connectedto thefirst
`
`pad layer through a second contact hole.
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`2.
`
`The display apparatus of claim 1, wherein a planar center of the first contact
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`hole coincides with a planar center of the second contacthole.
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`3.
`
`The display apparatus of claim 1, wherein a planar shape of the second contact
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`hole is arranged inside a planar shapeofthe first contact hole.
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`4.
`
`The display apparatus of claim 1, wherein a distance between a periphery of a
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`planar shape of the second contact hole and a periphery of a planar shape ofthe first contact hole
`
`is constant along the periphery of the planar shape of the second contact hole.
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`50
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`
`
`1.
`
`A display apparatus comprising:
`
`a substrate comprising a display area and a peripheral area outside the display area;
`
`a thin-film transistor and a display element arranged in the display area;
`
`a pad arranged in the peripheral area;
`
`a contact layer electrically connected to the pad; and
`
`a pad-protecting layer on the contact layer, the pad-protecting layer exposing a portion of
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`7
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`10
`
`ll
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`the contact layer to the outside,
`
`wherein the pad comprises:
`
`a first pad layer connected to a connection wiring througha first contact hole; and
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`a second pad layer spaced apart from the first pad layer and connectedto thefirst
`
`pad layer through a second contact hole.
`
`2.
`
`The display apparatus of claim 1, wherein a planar center of the first contact
`
`hole coincides with a planar center of the second contacthole.
`
`3.
`
`The display apparatus of claim 1, wherein a planar shape of the second contact
`
`hole is arranged inside a planar shapeofthe first contact hole.
`
`4.
`
`The display apparatus of claim 1, wherein a distance between a periphery of a
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`planar shape of the second contact hole and a periphery of a planar shape ofthe first contact hole
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`is constant along the periphery of the planar shape of the second contact hole.
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`5.
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`The display apparatus of claim 1, wherein:
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`the second contact hole is one of a plurality of second contact holes; and
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`the plurality of second contact holes are arranged inside a shapeofthefirst contact hole
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`in a plan view.
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`6.
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`The display apparatus of claim 1, wherein:
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`at least one ofthe first contact hole and the second contact hole is providedin a plurality;
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`and
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`a distance betweentheplurality of first contact holes neighboring each other or a distance
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`between the plurality of second contact holes neighboring each other is 40 um or more.
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`7.
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`The display apparatus of claim 6, wherein a distance betweenthe first contact
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`hole and the second contact hole that neighbor each otheris greater than the distance between the
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`plurality of first contact holes neighboring each other or the distance betweenthe plurality of
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`second contact holes neighboring each other.
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`8.
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`The display apparatus of claim 1, wherein a planar shapeofthe first contact hole
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`is symmetrical to a planar shape of the second contact hole with respect to a center of the pad.
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`9.
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`The display apparatus of claim 1, wherein the pad-protecting layer covers a
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`periphery of the contactlayer.
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`10.
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`The display apparatus of claim 1, wherein the contact layer comprises indium
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`tin oxide (ITO).
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`11.
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`The display apparatus of claim 1, wherein the first pad layer is on a same layer
`
`as a source electrode ofthe thin-film transistor.
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`12.
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`The display apparatus of claim 1, wherein:
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`each ofthe first contact hole and the second contact hole is provided inaplurality,
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`the plurality of first contact holes and the plurality of second contact holes are spaced
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`apart from each other along a periphery of the pad; and
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`the plurality offirst contact holes and the plurality of second contact holes are not
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`arranged in a central portion of the pad.
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`13.
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`A display apparatus comprising:
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`a substrate comprising a display area and a peripheral area outside the display area;
`
`a thin-film transistor and a display element arranged in the display area;
`
`a pad arranged in the peripheral area;
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`a contact layer electrically connected to the pad; and
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`a pad-protecting layer arranged on the contact layer, the pad-protecting layer exposing a
`
`portion of the contact layer to the outside.
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`14.
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`The display apparatus of claim 13, wherein the contact layer comprises indium
`
`tin oxide (ITO).
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`15.
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`The display apparatus of claim 13, wherein the pad-protecting layer comprises a
`
`contact hole that exposes the portion of the contactlayer.
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`16.
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`The display apparatus of claim 13, wherein the pad-protecting layer shields a
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`periphery of the contactlayer.
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`17.
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`The display apparatus of claim 13, further comprising:
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`a thin-film encapsulation layer covering the display element, the thin-film encapsulation
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`layer comprising at least one inorganic encapsulation layer and at least one organic encapsulation
`
`layer; and
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`a top substrate overlapping the thin-film encapsulation layer, the top substrate facing the
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`substrate.
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`18.
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`The display apparatus of claim 17, wherein the top substrate comprises color-
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`converting layers correspondingto at least a portion of a plurality of pixels of the display
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`apparatus, the color converting layers comprising quantum dots.
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`19.
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`The display apparatus of claim 18, wherein:
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`the plurality of pixels comprise a first pixel, a second pixel, and a third pixel;
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`a color-converting layer among the color converting layers correspondingtothe first
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`pixel is configured to emit red light;
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`a color-converting layer among the color converting layers corresponding to the second
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`pixel is configured to emit green light; and
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`1
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`2
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`a color-converting layer is not arranged in the third pixel.
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`20.
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`The display apparatus of claim 17, wherein the top substrate comprises color
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`filters correspondingto a plurality of pixels of the display apparatus.
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