Organic electroluminescent device and method of driving the same
AssigneeLG Electronics Inc.
InventorJae Lee
Life of this patent
Estimating the term…
Abstract
An organic electroluminescent device has a plurality of sub-pixels formed on an area having crossed over data lines and scan lines. The device includes a preliminary charge driving circuit which discharges each data line during a discharge time of preliminary charge time, and pre-charges the discharged data line by applying pre-charge current during pre-charge time of the preliminary charge time. The device further includes a data driving circuit which applies a data current to the pre-charged data line during a light-emitting time based on input RGB data. A length of pre-charge time is changed corresponding to the RGB data.
Claims20
A circuit for driving an electroluminescent device, comprising:
- a preliminary charge driving circuit for pre-charging at least one data line by applying a pre-charge current during a pre-charge time of the preliminary charge time;
- and
- a data driving circuit which applies data current to the pre-charged data line according to a video signal, wherein a length of the pre-charge time is changed based on the video signal.
A method of driving an electroluminescent device having a plurality of pixels formed on an area crossing over data lines and scan lines, comprising:
- pre-charging at least one data line during a pre-charge time of a preliminary charge time;
- and
- applying data current to the pre-charged data line according to a video signal, wherein length of the pre-charge time is changed based on the video signal.
An electroluminescent device, comprising:
- a plurality of scan lines in a first direction;
- a plurality of data lines in a second direction, the first direction being different from the second direction;
- and
- a plurality of sub-pixels, each sub-pixel including a corresponding scan line and a corresponding data line,
- a preliminary charge driving circuit for pre-charging at least one data line by applying a pre-charge current during a pre-charge time of the preliminary charge time, and
- a data driving circuit which applies data current to the pre-charged data line according to a video signal, wherein a length of the pre-charge time is changed based on the video signal.
Dependencies are inferred from the claim text.