Organic electroluminescent display panel, driving method thereof and display device
The disclosure discloses an organic electroluminescent display panel, a driving method thereof and a display device, where the dimming mode is taken to drive and each frame of scanning time is divided into the display area scanning time and the front-back porch time. Where each line of pixel circuits located in the display area of the organic electroluminescent display panel are scanned during the display area scanning time; and the drive circuit is adjusted during the front-back porch time. Where the front-back porch time is less than the display area scanning time, and the front-back porch time is the common multiple of the respective clock signal cycles in the gate drive circuit of the organic electroluminescent display panel.
1. A driving method of an organic electroluminescent display panel, comprising:
controlling a light emitting drive circuit to provide a light emitting control signal with a set light emitting cycle during each frame of scanning time;
dividing the each frame of scanning time into display area scanning time M and front-back porch time N; and
scanning each line of pixel circuits located in a display area of the organic electroluminescent display panel during the display area scanning time; wherein
the display area scanning time M and the front-back porch time N satisfy following conditions:
M>N and N=k*A; k is an integer greater than zero, A is a least common multiple of respective clock signal cycles in a gate drive circuit of the organic electroluminescent display panel, and the gate drive circuit comprises a scanning drive circuit and the light emitting drive circuit;
wherein k=b*M/((n-b)*A); wherein b is a positive integer and n is the number of the light emitting cycles;
wherein b/n≤0.2.
2. The driving method of the organic electroluminescent display panel of claim 1 , wherein 1≤k≤0.01M/A.
3. The driving method of the organic electroluminescent display panel of claim 1 , wherein 1≤k≤0.05a*M/A; wherein a is a duty ratio of an effective light emitting signal within the cycle of the light emitting control signal.
4. The driving method of the organic electroluminescent display panel of claim 3 , wherein a=0.5.
5. The driving method of the organic electroluminescent display panel of claim 1 , wherein k=M/((n-1)*A).
6. The driving method of the organic electroluminescent display panel of claim 5 , wherein n≥5.
7. The driving method of the organic electroluminescent display panel of claim 1 , wherein k=0.
8. The driving method of the organic electroluminescent display panel of claim 1 , wherein A=4H, and H is time during which the scanning drive circuit scans a line of pixels.
9. An organic electroluminescent display panel, comprising:
pixel circuits arranged in an array and located in a display area, and a gate drive circuit located in a non-display area; wherein the gate drive circuit comprises a scanning drive circuit and a light emitting drive circuit;
the light emitting drive circuit is configured to provide a light emitting control signal with a set light emitting cycle during each frame of scanning time; wherein the each frame of scanning time is divided into display area scanning time M and front-back porch time N;
the scanning drive circuit is configured to scan each line of the pixel circuits during the display area scanning time; and
the display area scanning time M and the front-back porch time N satisfy following conditions:
M>N and N=k*A; k is an integer greater than zero, and A is a least common multiple of respective clock signal cycles in the gate drive circuit;
wherein k=b*M/((n-b)*A); wherein b is a positive integer and n is the number of the light emitting cycles;
wherein b/n≤0.2.
10. The organic electroluminescent display panel of claim 9 , wherein 1≤k≤0.01M/A.
11. The organic electroluminescent display panel of claim 9 , wherein 1≤k≤0.05a*M/A; wherein a is a duty ratio of an effective light emitting signal within the cycle of the light emitting control signal.
12. The organic electroluminescent display panel of claim 11 , wherein a=0.5.
13. The organic electroluminescent display panel of claim 9 , wherein k=M/((n-1)*A).
14. The organic electroluminescent display panel of claim 13 , wherein n≥5.
15. The organic electroluminescent display panel of claim 9 , wherein k=0.
16. The organic electroluminescent display panel of claim 9 , wherein A=4H, and H is time during which the scanning drive circuit scans a line of pixels.
17. A display device, comprising:
an organic electroluminescent display panel, wherein the organic electroluminescent display panel comprises: pixel circuits arranged in an array and located in a display area, and a gate drive circuit located in a non-display area; wherein the gate drive circuit comprises a scanning drive circuit and a light emitting drive circuit;
the light emitting drive circuit is configured to provide a light emitting control signal with a set light emitting cycle during each frame of scanning time; wherein the each frame of scanning time is divided into display area scanning time M and front-back porch time N;
the scanning drive circuit is configured to scan each line of the pixel circuits during the display area scanning time; and
the display area scanning time M and the front-back porch time N satisfy following conditions:
M>N and N=k*A; k is an integer greater than zero, and A is a least common multiple of respective clock signal cycles in the gate drive circuit;
wherein k=b*M/((n-b)*A); wherein b is a positive integer and n is the number of the light emitting cycles;
wherein b/n≤0.2.