JP2004145197A5 - - Google Patents

Claims (11)

Based on a signal current supplied in accordance with an image signal to be displayed , a pixel matrix circuit for supplying a drive current to the light emitting element of each pixel, a signal line for supplying a signal current to the pixel matrix circuit, and a display Signal line driving means for outputting an image signal as the signal current to the signal line, and signal current detection for detecting the signal current supplied to the signal line in each column of the pixel matrix circuit and sequentially outputting the detection result And a correction means for correcting the image signal to be displayed based on the detection result detected by the signal current detection means.   The signal current detection means includes a switch circuit having one end connected to each signal line of each column and provided for each column, a current detection line having the other end of the switch circuit connected in common, and the switch 2. The display device according to claim 1, further comprising switch control means for controlling the circuit so as to be sequentially conducted.   3. The signal current detection means includes a current-voltage conversion means for amplifying the signal current of each column appearing on the current detection line by a predetermined current ratio and then converting the amplified signal current to a voltage. Display device.   Error detection for outputting, as an error detection result, a difference between the detection result when the image signals to be displayed at the first and second levels are respectively input and the reference detection result corresponding to the first and second levels. The correction means corrects the image signal to be displayed based on the error detection result of each column corresponding to the first and second levels. Display device.   An error detection result is a difference between the detection result when the image signals to be displayed at N types of levels (3 ≦ N ≦ number of display gradations) are input and the reference detection result corresponding to the N types of levels. An error detection means for outputting, wherein the correction means determines in which section between the two adjacent levels of the N types of levels the level of the image signal to be displayed is The display device according to claim 1, wherein the image signal to be displayed is corrected based on the error detection result of each column corresponding to the two levels.   The correction means corrects the image signal to be displayed based on the error detection result of each column when all possible levels of the image signal to be displayed are respectively input. The display device according to 1.   2. The display device according to claim 1, further comprising scanning means for sequentially scanning the pixel matrix circuit, wherein the scanning means is stopped when the signal current is detected by the signal current detection means. The error detection result display according to claim 4-6 noise Re crab, wherein further comprising a memory means for holding. Based on a signal current supplied in accordance with an image signal to be displayed , a pixel matrix circuit for supplying a drive current to the light emitting element of each pixel, a signal line for supplying a signal current to the pixel matrix circuit, and a display Signal line driving means for outputting an image signal as the signal current to the signal line, and signal current detection for detecting the signal current supplied to the signal line in each column of the pixel matrix circuit and sequentially outputting the detection result A display panel comprising means. The signal current detection means includes a switch circuit having one end connected to each signal line of each column and provided for each column, a current detection line having the other end of the switch circuit connected in common, and the switch 10. The display panel according to claim 9, further comprising switch control means for controlling the circuit so as to be sequentially conducted. 11. The signal current detection means comprises current-voltage conversion means for amplifying the signal current of each column appearing on the current detection line by a predetermined current ratio and then converting it into a voltage. Display panel.