Organic light emitting display device for prevent distortion of reference voltage
AssigneeLG Display Co., Ltd.
InventorsYoung-Ho Kim, Il-Gi Jeong
Life of this patent
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Abstract
The organic light emitting display device comprises a display panel having a plurality of gate lines and data lines for defining a plurality of sub-pixels; an organic light emitting device in each sub-pixel; a driving thin film transistor in each sub-pixel; a plurality of reference voltage lines in the display panel to apply a reference voltage to the sub-pixels in the display panel; and a VSS electrode connected to the reference voltage lines in the one side of the display panel to apply a VSS voltage to the reference voltage lines.
Claims21
An organic light emitting display device comprising:
- a display panel having a plurality of gate lines and data lines defining a plurality of sub-pixels;
- an organic light emitting device disposed in each sub-pixel;
- a driving thin film transistor disposed in each sub-pixel;
- a plurality of reference voltage lines disposed on the display panel to apply a reference voltage to the sub-pixels;
- and
- a VSS electrode disposed on a side of the display panel to apply a VSS voltage to the reference voltage lines,
- wherein, during a light emitting period, the plurality of reference voltage lines are connected to the VSS electrode for receiving the VSS voltage that equalizes all potentials of the plurality of reference voltage lines, and
- wherein, during a sensing period, the plurality of reference voltage lines are disconnected from the VSS electrode for floating that enables the plurality of reference voltage lines to transfer a sensing voltage obtained from the plurality of sub-pixels to a data driving unit.
An organic light emitting display device comprising:
- a plurality of gate lines and data lines disposed on a display panel and defining a plurality of sub-pixels;
- an organic light emitting device disposed in each sub-pixel;
- a driving thin film transistor disposed in each sub-pixel;
- a plurality of reference voltage lines disposed on the display panel and the sub-pixels applied with a reference voltage through the plurality of reference voltage lines;
- a VSS electrode disposed on the display panel for applying a VSS voltage to the plurality of reference voltage lines;
- and
- a plurality of reference voltage controlling lines for receiving a reference voltage controlling signal controlling connections between the plurality of reference voltage lines and the VSS electrode;
- wherein, during a light emitting period, the plurality of reference voltage lines are connected to the VSS electrode for receiving the VSS voltage that equalizes all potentials of the plurality of reference voltage lines, and
- wherein, during a sensing period, the plurality of reference voltage lines are disconnected from the VSS electrode for floating that enables the plurality of reference voltage lines to transfer a sensing voltage obtained from the plurality of sub-pixels to a data driving unit.
Dependencies are inferred from the claim text.