| 摘要 |
An organic electroluminescence display device includes a display panel including pixels. The pixels each include a light-emitter, driver and capacitor. A storage is configured to store a correction parameter for each of the pixels for correcting, in accordance with characteristics of each of the pixels, an image signal input from an external source. A controller is configured to, for each pixel of the pixels, obtain a corrected signal voltage by reading the correction parameter corresponding to the pixel from the storage and multiplying the image signal corresponding to the pixel by the correction parameter corresponding to the pixel. The storage is configured to store a gain and not an offset as the correction parameter. |
| 主权项 |
1. An organic electroluminescence display device, comprising:
a display panel including pixels, each of the pixels including:
a light-emitter,a driver including a gate, a source, and a drain, the driver being voltage-driven and controlling a supply of current to the light-emitter; anda first capacitor including a first electrode connected to the gate and a second electrode connected to one of the source and the drain;a storage configured to store a correction parameter for each of the pixels for correcting, in accordance with characteristics of each of the pixels, an image signal input from an external source; anda controller configured to, for each pixel of the pixels, obtain a corrected signal voltage by reading the correction parameter corresponding to the pixel from the storage and multiplying the image signal corresponding to the pixel by the correction parameter corresponding to the pixel,wherein the controller is configured to, for each of the pixels:cause, with each writing of the corrected signal voltage, the first capacitor to detect a threshold voltage of the driver;cause the first capacitor to hold a corresponding voltage that corresponds to the threshold voltage of the driver after the first capacitor detects the threshold voltage;supply the corrected signal voltage to the first capacitor when the first capacitor is holding the corresponding voltage that corresponds to the threshold voltage of the driver; andcause the current to flow to the light-emitter by supplying a first signal voltage between the gate and the source of the driver, the first signal voltage being obtained by adding the corrected signal voltage to the threshold voltage of the driver,the correction parameter is generated, for each of the pixels, by:obtaining a function of representative voltage-luminance characteristics common among the pixels included in the display panel;causing the first capacitor to hold the corresponding voltage that corresponds to the threshold voltage of the driver;applying, to the driver, a second signal voltage that corresponds to a single gradation level belonging to a high gradation region of the representative voltage-luminance characteristics when the first capacitor is holding the corresponding voltage that corresponds to the threshold voltage of the driver, and measuring an emitted luminance with a measurer;calculating the correction parameter with which the emitted luminance, measured with the measurer, is corrected to a standard luminance, the standard luminance being obtained when the second signal voltage is input to the function of the representative voltage-luminance characteristics; andstoring the correction parameter in the storage in association with a corresponding one of the pixels,when calculating the correction parameter, a correction voltage is calculated such that the emitted luminance is the standard luminance, andthe correction parameter is a gain indicating a ratio between the second signal voltage and the calculated correction voltage. |
