Touch display panel

1. A touch display panel, comprising a display region and a fan-shaped wiring region positioned below the display region, wherein the touch display panel comprises:

a base substrate;

a touch electrode layer formed on the base substrate and comprising a plurality of touch sensing blocks arranged in an array; and

a plurality of touch signal lines, wherein a first end of each of the touch signal lines is electrically connected to a corresponding touch sensing block, a second end of the touch signal lines extends to the fan-shaped wiring region and is electrically connected to a touch integrated circuit located in the fan-shaped wiring region, and the touch integrated circuit is arranged along a column direction;

wherein each of the touch sensing blocks is electrically connected to one of the touch signal lines, and the touch signal lines extend along a row direction;

the touch signal lines comprise a plurality of first type touch signal lines and a plurality of second type touch signal lines, and a distance between a first end of each of the first type touch signal lines and the touch integrated circuit is less than a distance between a first end of each of the second type touch signal lines and the touch integrated circuit;

each of the first type touch signal lines includes a single sub-signal line, and each of the second type touch signal lines includes at least two sub-signal lines;

a number of the touch sensing blocks arranged along the row direction is N, a number of the first type touch signal lines corresponding to the touch sensing blocks is P, and a number of the second type touch signal lines corresponding to the touch sensing blocks is Q, wherein N, P, and Q are all positive integers, and N=P+Q;

each row of the touch signal lines comprises a blind region in the column direction, a blind region width of the blind region is W, and a number of the touch signal lines in one blind region is t, wherein t is a positive integer and t≤N;

the touch display panel comprises a pixel array layer, the pixel array layer comprises a plurality of sub-pixel units arranged in an array; and

a vertical projection of the touch sensing blocks projected on the pixel array layer covers multiple ones of the sub-pixel units, the second type touch signal lines are grid metal patterns, and a vertical projection of each of the second type touch signal lines projected on the pixel array layer is located between two neighboring rows of the sub-pixel units and located at one side of an area of the touch sensing blocks.

2. The touch display panel as claimed in claim 1 , wherein when N=2n, P=Q=n; and

when N=2n+1, P=n+1, and Q=n, wherein n is a positive integer.

3. The touch display panel as claimed in claim 1 , wherein the sub-pixel units are one of a red sub-pixel unit, a green sub-pixel unit, or a blue sub-pixel unit.

4. The touch display panel as claimed in claim 3 , wherein a vertical projection of each of the touch signal lines projected on the pixel array layer is located between two adjacent rows of the sub-pixel units.

5. The touch display panel as claimed in claim 3 , wherein a pixel arrangement of the sub-pixel units is a diamond pixel arrangement or a 2-in-1 pixel arrangement.

6. The touch display panel as claimed in claim 1 , wherein the touch sensing blocks and the touch signal lines are both formed of a same metal layer, and the touch signal lines are grid metal patterns.

7. The touch display panel as claimed in claim 1 , wherein the touch integrated circuit is configured to provide touch driving signals and detect touch signals.

8. A touch display panel, comprising a display region and a fan-shaped wiring region positioned below the display region, wherein the touch display panel comprises:

a base substrate;

a touch electrode layer formed on the base substrate and comprising a plurality of touch sensing blocks arranged in an array; and

a plurality of touch signal lines, wherein a first end of each of the touch signal lines is electrically connected to a corresponding touch sensing block, a second end of the touch signal lines extends to the fan-shaped wiring region and is electrically connected to a touch integrated circuit located in the fan-shaped wiring region, and the touch integrated circuit is arranged along a column direction;

wherein the touch signal lines comprise a plurality of first type touch signal lines and a plurality of second type touch signal lines, and a distance between a first end of each of the first type touch signal lines and the touch integrated circuit is less than a distance between a first end of each of the second type touch signal lines and the touch integrated circuit;

each of the first type touch signal lines includes a single sub-signal line, and each of the second type touch signal lines includes at least two sub-signal lines;

a number of the touch sensing blocks arranged along the row direction is N, a number of the first type touch signal lines corresponding to the touch sensing blocks is P, and a number of the second type touch signal lines corresponding to the touch sensing blocks is Q, wherein N, P, and Q are all positive integers, and N=P+Q;

each row of the touch signal lines comprises a blind region in the column direction, a blind region width of the blind region is W, and a number of the touch signal lines in one blind region is t, wherein t is a positive integer and t≤N;

the touch display panel comprises a pixel array layer, the pixel array layer comprises a plurality of sub-pixel units arranged in an array; and

a vertical projection of the touch sensing blocks projected on the pixel array layer covers multiple ones of the sub-pixel units, the second type touch signal lines are grid metal patterns, and a vertical projection of each of the second type touch signal lines projected on the pixel array layer is located between two neighboring rows of the sub-pixel units and located at one side of an area of the touch sensing blocks.

9. The touch display panel as claimed in claim 8 , wherein when N=2n, P=Q=n; and

when N=2n+1, P=n+1, and Q=n, wherein n is a positive integer.

10. The touch display panel as claimed in claim 8 , wherein the sub-pixel units are one of a red sub-pixel unit, a green sub-pixel unit, or a blue sub-pixel unit.

11. The touch display panel as claimed in claim 10 , wherein a vertical projection of each of the touch signal lines projected on the pixel array layer is located between two adjacent rows of the sub-pixel units.

12. The touch display panel as claimed in claim 10 , wherein a pixel arrangement of the sub-pixel units is a diamond pixel arrangement or a 2-in-1 pixel arrangement.

13. The touch display panel as claimed in claim 8 , wherein the touch sensing blocks and the touch signal lines are both formed of a same metal layer, and the touch signal lines are grid metal patterns.

14. The touch display panel as claimed in claim 8 , wherein the touch integrated circuit is configured to provide touch driving signals and detect touch signals.