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US 11,908,407 B2Granted
Light emitting display device and compensation method thereof
AssigneeLG Display Co., Ltd.
InventorJun Hee Han
Life of this patent
Estimating the term…
Abstract
A light emitting display device and a compensation method thereof, wherein an optical characteristics detection portion overlapping a signal line is provided in a subpixel, and the optical characteristics detection portion is connected to one of source voltage lines used by the subpixel, whereby optical characteristics of the subpixel can be determined without loss in effective area of an emission portion and to easily compensate for an afterimage of a display panel.
Claims17
A light emitting display device comprising:
- a substrate having a plurality of subpixels, and each subpixel comprising an emission portion and a pixel circuit;
- a signal line and a first source voltage line provided in the pixel circuit, and the signal line and the first source voltage line intersecting each other;
- a light emitting element provided at the emission portion, and the light emitting element comprising a first electrode, an organic layer, and a second electrode;
- a first electrode extension portion integral with the first electrode, and the first electrode extension portion extending from the first electrode to overlap with at least a part of the signal line;
- a connection pattern overlapping with the first electrode extension portion along the signal line;
- a photovoltaic material provided between the connection pattern and the first electrode extension portion;
- and
- a detection pattern spaced apart from the photovoltaic material,
- wherein one side of the detection pattern is connected to the first electrode extension portion along the signal line, and another side of the detection pattern is connected to the first source voltage line.
6 more elements
A compensation method of the light emitting display device comprising:
- operating a light emitting element of an emission portion in a subpixel to emit light and generating a photovoltaic signal from photovoltaic material of a pixel circuit in the subpixel;
- transmitting the photovoltaic signal from the photovoltaic material to a first source voltage line via a connection pattern and a detection pattern;
- and
- detecting optical characteristics of the subpixel from which the photovoltaic signal has been generated through a driver connected to the first source voltage line.
1 more element
Dependencies are inferred from the claim text.