Display panel

1. A display panel having a first display region and a second display region, comprising:

a sub-pixel array comprising a plurality of sub-pixels arranged in an array,

wherein the plurality of sub-pixels is distributed in the first display region and the second display region,

wherein a light transmittance of a non-light-emitting region in the second display region is greater than a light transmittance of a non-light-emitting region in the first display region,

wherein among sub-pixels emitting a same color of the plurality of sub-pixels in the first display region and the second display region, a width-to-length ratio of a driving transistor in a pixel circuit of a sub-pixel in the second display region is greater than a width-to-length ratio of a driving transistor in a pixel circuit of a sub-pixel in the first display region.

2. The display panel according to claim 1 , wherein the light transmittance of the non-light-emitting region in the first display region is T1, and the light transmittance of the non-light-emitting region in the second display region is T2, where T1 and T2 satisfy: 3≤T2/T1≤50.

3. The display panel according to claim 1 , further comprising gate signal lines extending in a first direction and data lines extending in a second direction, the first direction intersecting with the second direction,

wherein a distribution density of sub-pixels in the second display region is smaller than a distribution density of sub-pixels in the first display region, and

wherein among sub-pixels emitting the same color of the plurality of sub-pixels in the first display region and the second display region, a light-emitting area of a sub-pixel in the second display region is larger than a light-emitting area of a sub-pixel in the first display region.

4. The display panel according to claim 3 , wherein among the sub-pixels emitting the same color of the plurality of sub-pixels in the first display region and the second display region, a width in the first direction of a sub-pixel in the second display region is R1 times a width in the first direction of a sub-pixel in the first display region, and a width in the second direction of a sub-pixel in the second display region is R2 times a width in the second direction of a sub-pixel in the first display region; and a ratio of a center-to-center distance between two adjacent sub-pixels in the first direction in the second display region to a center-to-center distance between two adjacent sub-pixels in the first direction in the first display region is R3, and a ratio of a center-to-center distance between two adjacent sub-pixels in the second direction in the second display region to a center-to-center distance between two adjacent sub-pixels in the second direction in the first display region is R4, where 0.8≤(R1×R2)/(R3×R4)≤1.2.

5. The display panel according to claim 3 , wherein the plurality of sub-pixels at least comprises red sub-pixels, green sub-pixels, and blue sub-pixels, wherein

a ratio of a light-emitting area of a green sub-pixel in the second display region to a light-emitting area of a green sub-pixel in the first display region is smaller than a ratio of a light-emitting area of a red sub-pixel in the second display region to a light-emitting area of a red sub-pixel in the first display region and/or a ratio of a light-emitting area of a blue sub-pixel in the second display region to a light-emitting area of a blue sub-pixel in the first display region.

6. The display panel according to claim 1 , wherein each of the plurality of sub-pixels comprises an anode and a pixel circuit, wherein

for each of the plurality of sub-pixels in the second display region, the anode and the pixel circuit extend along a same direction, and in a direction perpendicular to a plane of the display panel, the anode and the pixel circuit overlap each other.

7. The display panel according to claim 6 , wherein for each of the plurality of sub-pixels in the second display region, the anode completely covers the pixel circuit in at least one direction of the first direction or the second direction.

8. The display panel according to claim 3 , wherein a center-to-center distance between two adjacent sub-pixels in the first direction in the first display region is P11, and a center-to-center distance between two adjacent sub-pixels in the first direction in the second display region is P12, where P11 and P12 satisfy: P12=R3×P11, and R3≥1; and

a center-to-center distance between two adjacent sub-pixels in the second direction in the first display region is P21, and a center-to-center distance between two adjacent sub-pixels in the second direction in the second display region is P22, where P21 and P22 satisfy: P22=R4×P21, and R4≥1.

9. The display panel according to claim 8 , wherein among the sub-pixels emitting the same color of the plurality of sub-pixels in the first display region and the second display region, a width in the first direction of a sub-pixel in the first display region is W1, and a width in the first direction of a sub-pixel in the second display region is W12, where W11 and W12 satisfy: W12=M2×W11, and M2>1; and

a width in the second direction of a sub-pixel in the first display region is W21, and a width in second direction of a sub-pixel in the second display region is W22, where W21 and W22 satisfy: W21=N2×W22, and N2>1.