Sensor substrate, method of manufacturing the same and sensing display panel having the same
A sensor substrate includes a blocking pattern disposed on a base substrate, a first electrode disposed on the base substrate and overlapping the blocking pattern, the first electrode including a plurality of first unit parts arranged in a first direction, each of the first unit parts including a plurality of lines connected to each other in a mesh-type arrangement, a color filter layer disposed on the base substrate, a plurality of contact holes defined in the color filter layer and exposing the first unit parts, and a bridge line between and connected to first unit parts adjacent to each other in the first direction, through the contact holes.
1. A sensor substrate comprising:
a blocking pattern on a base substrate;
a first electrode on the base substrate and overlapping the blocking pattern, the first electrode comprising a plurality of first unit parts connected to each other along a first direction,
each of a first unit part among the first unit parts connected to each other along the first direction comprising a plurality of first lines connected to each other to define a mesh-type arrangement thereof in which lengths of the first lines are extended in the first direction and in a second direction crossing the first direction to define spaces between adjacent first lines within the first unit part;
a second electrode on the base substrate and overlapping the blocking pattern, the second electrode comprising a plurality of second unit parts connected to each other along the second direction,
each of a second unit part among the second unit parts connected to each other along the second direction comprising a plurality of second lines connected to each other to define mesh-type arrangement thereof in which lengths of the second lines are extended in the first direction and in the second direction to define spaces between adjacent second lines within the second unit part;
an insulating layer on the base substrate, and between the first electrode and the second electrode;
a color filter layer on the base substrate and the second electrode; and
an overcoating layer on the base substrate and the color filter layer, the color filter layer between the overcoating layer and the base substrate.
2. The sensor substrate of claim 1 , further comprising:
an active area in which a contact to the sensor substrate is sensed, the first electrode, the second electrode and the color filter disposed in the active area, and
a peripheral area in which a contact-determining circuit is disposed, the peripheral area disposed outside of the active area.
3. The sensor substrate of claim 2 , further comprising in the peripheral area:
a plurality of pads which receives signals which are provided the first and second electrodes, wherein each of the pads in the peripheral area comprises:
a pad electrode comprising a metal layer:
an overcoating pattern on the pad electrode;
the insulating layer between the pad electrode and the overcoating pattern; and
an opening defined in the overcoating pattern and the insulating layer, wherein the opening exposes an upper portion of the pad electrode.
4. A method of manufacturing a sensor substrate, the method comprising:
providing a blocking pattern on a base substrate;
providing a first electrode on the base substrate and overlapping the blocking pattern, the first electrode comprising a plurality of first unit parts connected to each other along a first direction,
each of a first unit part among the first unit parts connected to each other along a first direction comprising a plurality of first lines connected to each other to define a mesh-type arrangement thereof in which lengths of the first lines are extended in the first direction and in a second direction crossing the first direction to define spaces between adjacent first lines within the first unit part;
providing a second electrode on the base substrate and overlapping the blocking pattern, the second electrode comprising a plurality of second unit parts connected to each other along the second direction,
each of a second unit part among the second unit parts connected to each other along the second direction comprising a plurality of second lines connected to each other to define a mesh-type arrangement thereof in which lengths of the second lines are extended in the first direction and in the second direction to define spaces between adjacent second lines within the second unit part;
providing an insulating layer on the base substrate, and between the first electrode and the second electrode;
providing a color filer layer on the base substrate and on the second electrode; and
providing an overcoating layer on the base substrate and on the color filer layer, the color filter layer between the overcoating layer and the base substrate.
5. The method of claim 4 , further comprising:
defining an active area in which a contact to the sensor substrate is sensed, the first electrode, the second electrode and the color filter disposed in the active area, and
defining a peripheral area in which a contact-determining circuit is disposed, the peripheral area disposed outside the active area.
6. The method of claim 5 , further comprising:
providing in the peripheral area, a plurality of pads which receives signals which are provided to the first and second electrodes,
wherein each of the pads in the peripheral area comprises:
a pad electrode formed from a metal layer,
an overcoating pattern on the pad electrode,
the insulating layer between the pad electrode and the overcoating pattern, and
an opening defined in the overcoating pattern and the insulating layer, wherein the opening exposes an upper surface of the pad electrode.