Compensation method of pixel circuit in organic light-emitting diode display panel and related devices
The disclosure discloses a compensation method and device of an organic light-emitting diode display panel, and an organic light-emitting diode display device. A high-voltage signal received at a first electrode of a driver transistor in the pixel circuit is detected when a light-emitting element in the pixel circuit is emitting light in the current frame. Then the voltage difference between the high-voltage signals received by the driver transistor in the current frame and a preceding frame, i.e., compensation voltage, is determined according to the detected high-voltage signal received by the pixel circuit in the current frame, and the pre-stored high-voltage signal received by the pixel circuit in the preceding frame. When the compensation voltage lies out of a preset range, voltage compensation is performed on a reference voltage signal applied to the pixel circuit according to the compensation voltage.
1. A compensation method of an organic light-emitting diode display panel, comprising:
detecting a high-voltage signal received at a first electrode of a driver transistor in at least one pixel circuit in the organic light-emitting diode display panel in a current frame when a light-emitting element in the at least one pixel circuit is emitting light;
determining compensation voltage corresponding to the at least one pixel circuit according to the detected high-voltage signal received by the at least one pixel circuit in the current frame, and a pre-stored high-voltage signal received by the at least one pixel circuit in a preceding frame, wherein the compensation voltage is the voltage difference between the high-voltage signal received in the current frame, and the high-voltage signal received in the preceding frame; and
performing voltage compensation on a reference voltage signal applied to the corresponding pixel circuit according to the compensation voltage when the compensation voltage lies out of a preset range;
wherein the performing voltage compensation on the reference voltage signal applied to the corresponding pixel circuit according to the compensation voltage comprises:
applying the reference voltage signal, to which the compensation voltage is added, to the corresponding pixel circuit.
2. The compensation method according to claim 1 , wherein a display area of the organic light-emitting display panel comprises a plurality of display sub-areas, and each of the display sub-areas comprises the at least one pixel circuit; and
before the high-voltage signal received at the first electrode of the driver transistor in the at least one pixel circuit in the current frame is detected, the method further comprises:
determining an IR drop corresponding to each of the display sub-areas, and
for each of the display sub-areas, when the IR drop corresponding to the display sub-area lies out of a preset drop range, determining the display sub-area corresponding to the IR drop lying out of the preset drop range as a display sub-area to be compensated; and
the detecting the high-voltage signal received at the first electrode of the driver transistor in the at least one pixel circuit in the organic light-emitting diode display panel in the current frame when the light-emitting element in the pixel circuit is emitting light comprises:
detecting the high-voltage signal received at the first electrode of the driver transistor in each of the at least one pixel circuit in the display sub-area to be compensated, in the current frame when the light-emitting element in each of the at least one pixel circuit in the display sub-area to be compensated is emitting light.
3. The compensation method according to claim 2 , wherein the plurality of display sub-areas are of the same area size.
4. The compensation method according to claim 1 , wherein after the high-voltage signal received at the first electrode of the driver transistor in the at least one pixel circuit in the current frame is detected, and before the compensation voltage corresponding to the at least one pixel circuit is determined, the method further comprises:
storing the detected high-voltage signal received at the first electrode of the driver transistor in the at least one pixel circuit in the current frame.