ORGANIC LIGHT-EMITTING DISPLAY PANEL, DRIVING METHOD AND DRIVING DEVICE THEREFOR
Provided are an organic light-emitting display panel, a driving method and a driving device therefor. The driving method includes: setting a plurality of brightness levels of the organic light-emitting display panel and a plurality of maximum gray scale brightnesses, and the plurality of maximum gray scale brightnesses include a first maximum gray scale brightness corresponding to a maximum brightness level of the organic light-emitting display panel, and an effective pulse duty cycle of a light-emitting control signal for driving the first maximum gray scale brightness is defined as a first effective pulse duty cycle; determining a target brightness level of the switched picture and a target maximum gray scale brightness corresponding to the target brightness level; adjusting the target effective pulse duty cycle of the light-emitting control signal for driving the switched picture.
1 . A driving method for an organic light-emitting display panel, comprising:
setting a plurality of brightness levels of the organic light-emitting display panel and a plurality of maximum gray scale brightnesses, wherein each of the plurality of brightness levels corresponds to a respective one of the plurality of maximum gray scale brightnesses, the plurality of maximum gray scale brightnesses comprise a first maximum gray scale brightness corresponding to a maximum brightness level of the organic light-emitting display panel, and an effective pulse duty cycle of a light-emitting control signal for driving the first maximum gray scale brightness is defined as a first effective pulse duty cycle;
determining, when a picture in the organic light-emitting display panel is controlled to be switched, a target brightness level of the switched picture and a target maximum gray scale brightness corresponding to the target brightness level; and
adjusting, based on the target maximum gray scale brightness of the switched picture, the first maximum gray scale brightness and the first effective pulse duty cycle, a target effective pulse duty cycle of the light-emitting control signal for driving the switched picture.
2 . The driving method according to claim 1 , wherein
an effective pulse of the light-emitting control signal is configured to control at least one row of corresponding sub-pixels to emit light.
3 . The driving method according to claim 2 , wherein
the effective pulse of the light-emitting control signal is configured to control adjacent two rows of corresponding sub-pixels corresponding to emit light.
4 . The driving method according to claim 1 , wherein
an output waveform of the light-emitting control signal comprises a plurality of effective pulses and a plurality of ineffective pulses.
5 . The driving method according to claim 4 , wherein adjusting the target effective pulse duty cycle of the light-emitting control signal for driving the switched picture comprises:
calculating a target ratio of the target maximum gray scale brightness to the first maximum gray scale brightness; and
adjusting the target effective pulse duty cycle of the light-emitting control signal for driving the switched picture in such a way that the ratio of the target effective pulse duty cycle to the first effective pulse duty cycle is equal to the target ratio.
6 . The driving method according to claim 5 , wherein adjusting the target effective pulse duty cycle of the light-emitting control signal for driving the switched picture comprises:
decreasing gradually, when the target effective pulse duty cycle of the light-emitting control signal for driving the switched picture is less than the effective pulse duty cycle of the light-emitting control signal for driving the preceding picture of the frame, the target effective pulse duty cycle of the light-emitting control signal until the ratio of the target effective pulse duty cycle to the first effective pulse duty cycle is equal to the target ratio.
7 . The driving method according to claim 5 , wherein adjusting the target effective pulse duty cycle of the light-emitting control signal for driving the switched picture comprises:
increasing gradually, when the target effective pulse duty cycle of the light-emitting control signal for driving the switched picture is larger than the effective pulse duty cycle of the light-emitting control signal for driving the preceding picture of the frame, the target effective pulse duty cycle of the light-emitting control signal until the ratio of the target effective pulse duty cycle to the first effective pulse duty cycle equal to the target ratio.
8 . A driving device of an organic light-emitting display panel, comprising:
display brightness determining device, which is configured for determining, when a picture in the organic light-emitting display panel is controlled to be switched, a target brightness level of the switched picture and a target maximum gray scale brightness corresponding to the target brightness level;
display brightness adjusting device, which is configured for adjusting the target effective pulse duty cycle of the light-emitting control signal for driving the switched picture according to the target maximum gray scale brightness of the switched picture, the first maximum gray scale brightness and a first effective pulse duty cycle, wherein the maximum gray scale brightness corresponding to the maximum brightness level of the organic light-emitting display panel is defined as a first maximum gray scale brightness, and the effective pulse duty cycle of the light-emitting control signal for driving the first maximum gray scale brightness is defined as a first effective pulse duty cycle.
9 . The driving device according to claim 8 , wherein
an effective pulse of the light-emitting control signal is configured to control at least one row of corresponding sub-pixels to emit light.
10 . The driving device according to claim 9 , wherein
the effective pulse of the light-emitting control signal is configured to control two adjacent rows of corresponding sub-pixels to emit light.
11 . The driving device according to claim 8 , wherein
an output waveform of the light-emitting control signal comprises a plurality of effective pulses and a plurality of ineffective pulses.
12 . The driving device according to claim 11 , wherein
the display brightness adjusting device comprises:
brightness calculating device, which is configured to calculate the target ratio of the target maximum gray scale brightness to the first maximum gray scale brightness; and
pulse adjusting device, which is configured to adjust the target effective pulse duty cycle of the light-emitting control signal for driving the switched picture in such a way that the ratio of the target effective pulse duty cycle to the first effective pulse duty cycle is equal to the target ratio.
13 . The driving device according to claim 12 , wherein
an implementation process of the display brightness adjusting device comprises: decreasing gradually, when the target effective pulse duty cycle of the light-emitting control signal for driving the switched picture is less than the effective pulse duty cycle of the light-emitting control signal for driving the preceding picture of the frame, the target effective pulse duty cycle of light-emitting control signal until the ratio of the target effective pulse duty cycle to the first effective pulse duty cycle is equal to the target ratio.
14 . The driving device according to claim 12 , wherein
the implementation process of the display brightness adjusting device comprises: increasing gradually, when the target effective pulse duty cycle of the light-emitting control signal for driving the switched picture is larger than the effective pulse duty cycle of the light-emitting control signal for driving the preceding picture of the frame, the target effective pulse duty cycle of light-emitting control signal until the ratio of the target effective pulse duty cycle to the first effective pulse duty cycle is equal to the target ratio.
15 . An organic light-emitting display panel, comprising:
a driving device, wherein
the driving device comprises:
display brightness determining device, which is configured for determining, when a picture in the organic light-emitting display panel is controlled to be switched, a target brightness level of the switched picture and a target maximum gray scale brightness corresponding to the target brightness level;
display brightness adjusting device, which is configured for adjusting the target effective pulse duty cycle of the light-emitting control signal for driving the switched picture according to the target maximum gray scale brightness of the switched picture, the first maximum gray scale brightness and a first effective pulse duty cycle, wherein the maximum gray scale brightness corresponding to the maximum brightness level of the organic light-emitting display panel is defined as a first maximum gray scale brightness, and the effective pulse duty cycle of the light-emitting control signal for driving the first maximum gray scale brightness is defined as a first effective pulse duty cycle.
16 . The organic light-emitting display panel according to claim 15 , wherein the driving device comprises:
a plurality of light-emitting control lines, wherein each of the light-emitting control lines is configured to correspond to and is electrically connected to at least one row of sub-pixels;
a multiple cascades of shift register devices, wherein the multiple cascades of shift register devices correspond to and are electrically connected to the plurality of light-emitting control lines, respectively, each of the cascades of the multiple cascades of shift register devices is configured to provide a light-emitting control signal to corresponding one of the light-emitting control lines.