Organic light emitting display device and method for driving the same
First Claim
1. An organic light emitting display device, comprising:
- a display panel including a plurality of pixels and a plurality of sensing lines respectively coupled to the pixels, each of the pixels including an organic light emitting device and a driving transistor to control a current flow in the organic light emitting device; and
a panel driver configured;
to receive an input image data for at least one of the pixels,to generate a sensing data by sensing a characteristic variation of the driving transistor in the at least one of the pixels through a corresponding one of the sensing lines,to calculate a frame representative value by analyzing the input image data in a unit of one frame,to generate a peak luminance data to limit peak luminance of an input image based on the frame representative value,to generate a corrected data for the at least one of the pixels by correcting the input image data based on the sensing data,to convert the corrected data to a data voltage based on a plurality of reference gamma voltages set based on the peak luminance data, andto supply the data voltage to the at least one of the pixels.
1 Assignment
0 Petitions
Accused Products
Abstract
An organic light emitting display device comprising a display panel and a panel driver is disclosed. The display panel includes pixels and sensing lines respectively coupled to the pixels. Each pixel includes an organic light emitting device and a driving transistor to control a current flow in the organic light emitting device. The panel driver is configured to receive an input image data, to generate a sensing data by sensing a characteristic variation of the driving transistor, to generate a peak luminance data to limit peak luminance of an input image, to generate a corrected data by correcting the input image data based on the sensing data, to convert the corrected data to a data voltage based on a plurality of reference gamma voltages set based on the peak luminance data, and to supply the data voltage to the pixels.
34 Citations
27 Claims
-
1. An organic light emitting display device, comprising:
-
a display panel including a plurality of pixels and a plurality of sensing lines respectively coupled to the pixels, each of the pixels including an organic light emitting device and a driving transistor to control a current flow in the organic light emitting device; and a panel driver configured; to receive an input image data for at least one of the pixels, to generate a sensing data by sensing a characteristic variation of the driving transistor in the at least one of the pixels through a corresponding one of the sensing lines, to calculate a frame representative value by analyzing the input image data in a unit of one frame, to generate a peak luminance data to limit peak luminance of an input image based on the frame representative value, to generate a corrected data for the at least one of the pixels by correcting the input image data based on the sensing data, to convert the corrected data to a data voltage based on a plurality of reference gamma voltages set based on the peak luminance data, and to supply the data voltage to the at least one of the pixels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. An organic light emitting display device, comprising:
-
a display panel including a plurality of scan lines, a plurality of data lines crossing the scan lines, a plurality of pixels at the crossings of the scan lines and data lines, and a plurality of sensing lines respectively coupled to the pixels, at least one of the pixels including an organic light emitting device and a driving transistor to control a current flow in the organic light emitting device; a timing controller configured to generate a scan control signal and a data control signal, and configured to receive an input image data for the at least one of the pixels and a sensing data for the at least one of the pixels, to calculate a frame representative value by analyzing the input image data in a unit of one frame, to generate a peak luminance data based on the frame representative value, and to generate a corrected data for the at least one of the pixels based on the sensing data; a row driver configured to supply first scan pulses to the scan lines and second scan pulses to the sensing control lines based on the scan control signal; a reference gamma voltage supply configured to generate the plurality of reference gamma voltages based on the peak luminance data; and a column driver coupled to the data lines and sensing lines, and configured to generate the sensing data by sensing the characteristic variation of the driving transistor in the at least one of the pixels through a corresponding one of the sensing lines, to convert the corrected data to the data voltage based on the plurality of reference gamma voltages, and to supply the data voltage to the at least one of the pixels through the corresponding one of the data lines. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
-
-
21. A method for driving an organic light emitting display device including a plurality of pixels and a plurality of sensing lines respectively coupled to the pixels, each of the pixels including an organic light emitting device and a driving transistor for controlling a current flowing in the organic light emitting device, the method comprising:
-
generating a sensing data for at least one of the pixels by sensing a characteristic variation of the driving transistor of the at least one of the pixels through a corresponding one of the sensing lines; calculating a frame representative value for the at least one of the pixels by analyzing input image data in a unit of one frame; determining a peak luminance data to limit peak luminance of an input image based on the frame representative value and the sensing data; determining a corrected data for the at least one of the pixels by correcting the input image data based on the sensing data; generating a plurality of reference gamma voltages based on the peak luminance data; converting the corrected data to a data voltage based on the plurality of reference gamma voltages; and supplying the data voltage to the at least one of the pixels. - View Dependent Claims (22, 23, 24, 25, 26, 27)
-
Specification