Touch display panel

Abstract

A touch display panel is disclosed herein, comprising a substrate, a plurality of scan lines, a plurality of data lines, and a plurality of sensing electrodes. The scan lines are arranged along a first direction and disposed on the substrate. The data lines are arranged along a second direction and disposed on the substrate. The scan lines and data lines are alternately arranged to define a plurality of pixel units. The sensing electrodes are electrically separated from each other and disposed on the scan lines and data lines, with each sensing electrode corresponding to a portion of the pixel units. For adjacent first and second sensing electrodes arranged along the first direction, the first sensing electrode includes a protrusion protruding toward the direction of the second sensing electrode.

Claims

1. A touch display panel, comprising: One substrate; A plurality of scan lines are arranged along a first direction and disposed on the substrate; a plurality of data lines are arranged along a second direction and disposed on the substrate, wherein the scan lines and data lines are interleaved to define a plurality of pixel units; and a plurality of sensing electrodes are electrically separated from each other and disposed on the scan lines and data lines, each of the sensing electrodes corresponding to a plurality of the pixel units; wherein for an adjacent first sensing electrode and a second sensing electrode among the sensing electrodes arranged along the first direction, the first sensing electrode includes a protrusion protruding toward the direction of the second sensing electrode; wherein the first sensing electrode corresponds to N×M pixel units among the pixel units, where N and M are positive integers greater than or equal to 2, wherein the first sensing electrode includes N electrode units arranged sequentially along the first direction, one of the N electrode units corresponding to the M pixel units in the i-th column, 1≤i≤N, wherein the protrusion is located in the N-th electrode unit among the N electrode units.

2. The touch display panel as claimed in claim 1, wherein the protrusion and the second sensing electrode have a first distance between 5.5 micrometers and 10 micrometers.

3. The touch display panel as claimed in claim 1, wherein the first sensing electrode further includes a plurality of extensions, wherein the i-th electrode unit and the (i+1)-th electrode unit of the N electrode units are connected by one of the extensions.

4. The touch display panel as claimed in claim 3, wherein the width of at least one of the extensions and / or the width of the protrusion is less than the width of any one of the N×M pixel units.

5. The touch display panel as claimed in claim 3, wherein the width of at least one of the extensions is the same as the width of the protrusion.

6. The touch display panel as claimed in claim 3, wherein each of the pixel units includes a switching transistor, the switching transistor including a gate electrode electrically connected to a corresponding one of the scan lines, wherein the one of the extensions at least covers a portion of the gate electrode of the switching transistor of one of the N×M pixel units.

7. The touch display panel as claimed in claim 6, wherein the second sensing electrode is disposed corresponding to P×Q pixel units of the pixel units, where P and Q are positive integers greater than or equal to 2, wherein the protrusion at least covers a portion of the gate electrode of the switching transistor of one of the P×Q pixel units.

8. The touch display panel as claimed in claim 7, wherein the switching transistor further includes a channel region, wherein the protrusion at least covers a portion of the channel region of the switching transistor of one of the P×Q pixel units.

9. The touch display panel as claimed in claim 7, wherein the protrusion and the gate electrode of the switching transistor of one of the P×Q pixel units have a first coverage area, the extension and the gate electrode of the switching transistor of one of the N×M pixel units have a second coverage area, and the first coverage area is smaller than the second coverage area.

10. The touch display panel of claim 1, wherein adjacent first and third sensing electrodes arranged along the second direction have a second spacing, wherein the second spacing is between 5.5 micrometers and 10 micrometers.

11. The touch display panel as claimed in claim 1, wherein each of the sensing electrodes is formed with a plurality of trenches, and the area where the trenches are located corresponds to the position of the data lines.

12. The touch display panel as claimed in claim 1, wherein the touch display panel is configured to switch between a touch phase and a display phase, wherein in response to the touch phase, the sensing electrodes are configured to receive a sensing signal to sense whether a touch event has occurred, and in response to the display phase, the sensing electrodes are configured to receive a common voltage signal.

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