Display panel, electronic device including the same, and method of fabricating electronic device

A display panel, comprising:

• a plurality of first pixels on a first region;
• a plurality of second pixels on a second region having a transmittance less than a transmittance of the first region;
• a first group data line electrically connected to a first emission group;
• a second group data line electrically connected to a second emission group;
• and
• a test circuit configured to provide one or more test voltages to the plurality of first pixels and the plurality of second pixels, wherein the test circuit includes:
• a first test circuit configured to provide the plurality of first pixels with a first voltage;
• and
• a second test circuit configured to provide the plurality of second pixels with a second voltage different from the first voltage, wherein:
• the plurality of first pixels and the plurality of second pixels are classified into the first emission group and the second emission group,
• the first emission group includes some of the plurality of first pixels and some of the plurality of second pixels, and
• the second emission group includes some of the plurality of second pixels but excludes the plurality of first pixels.

An electronic device, comprising:

• an electronic module;
• and
• a display panel comprising a first region and a second region adjacent to the first region, the first region overlapping the electronic module, wherein the display panel includes:
• a plurality of first pixels on the first region;
• a plurality of second pixels on the second region having a transmittance different from a transmittance of the first region;
• a first group data line connected to one of the plurality of first pixels and one of the plurality of second pixels;
• a second group data line connected to another of the plurality of second pixels;
• and
• a test circuit comprising a first test circuit connected to the first group data line to apply a first voltage to the plurality of first pixels, a second test circuit connected to the second group data line to apply a second voltage to the plurality of second pixels, and a switch circuit connected between the first group data line and the second test circuit, wherein the first voltage is different from the second voltage and wherein the first voltage and the second voltage cause the plurality of first pixels and the plurality of second pixels to emit light having substantially a same target brightness.

A method of fabricating an electronic device, the method comprising:

• testing a display panel that includes a plurality of first pixels on a first region, a plurality of second pixels on a second region having a transmittance less than a transmittance of the first region, and a test circuit configured to provide test voltages to the plurality of first pixels and the plurality of second pixels;
• and
• cutting a portion of the display panel,
• wherein testing the display panel includes:
• performing a first test operation that includes providing a first voltage to a first group data line connected to some of the plurality of first pixels and some of the plurality of second pixels and providing a second voltage to a second group data line connected to some other of the plurality of second pixels, the second voltage being different from the first voltage;
• and
• performing a second test operation that includes providing the second voltage to the first group data line and providing the second voltage to the second group data line, wherein the first voltage and the second voltage cause light to be emitted from the plurality of first pixels and the plurality of second pixels with substantially a same target brightness.