In-cell touch panel and display device
First Claim
1. An in-cell touch panel comprising:
- a first substrate and a second substrate disposed oppositely to each other, a common electrode layer comprising a plurality of strip-like slits disposed on a side of the second substrate, which side faces the first substrate, and a touch sensing chip;
whereinthe common electrode layer comprises a plurality of mutually independent self-capacitance electrodes distributed along the strip-like slits and a direction crossing the strip-like slits; and
the touch sensing chip is configured to apply common electrode signals to the self-capacitance electrodes in a display time period and determine touch positions by detecting capacitance value variation of self-capacitance electrodes in a touch time period;
further comprising;
a black matrix layer disposed on a side of the first substrate, which side faces the second substrate, or on a side of the second substrate, which side faces the first substrate;
and in the common electrode layer, orthogonal projections of partitioning gaps in the direction crossing the strip-like slits on the second substrate are all within regions in which a pattern of the black matrix layer is located;
a plurality of wires connecting the self-capacitance electrodes to the touch sensing chip;
wherein the wires and the self-capacitance electrodes are disposed on different layers; and
pixel electrodes disposed between the second substrate and the common electrode layer;
wherein a layer where the wires are located is disposed between the pixel electrodes and the common electrode layer or on a same layer as the pixel electrodes;
wherein opposite sides of adjacent two of self-capacitance electrodes are both configured as bend lines.
1 Assignment
0 Petitions
Accused Products
Abstract
An in-cell touch panel and a display device are disclosed, a common electrode layer is reused as self-capacitance electrodes in accordance with self-capacitance principle. A pattern of common electrode layer is designed such that the common electrode layer is partitioned into a plurality of mutually independent self-capacitance electrodes along strip-like slits and a direction crossing the slits. The touch sensing chip can determine a touch position by detecting capacitance value variation of self-capacitance electrodes in a touch period. The in-cell touch panel can save production costs and improve production efficiency, and also can avoid light leakage caused by cutting common electrode layer and influence on display effect.
32 Citations
9 Claims
-
1. An in-cell touch panel comprising:
-
a first substrate and a second substrate disposed oppositely to each other, a common electrode layer comprising a plurality of strip-like slits disposed on a side of the second substrate, which side faces the first substrate, and a touch sensing chip;
whereinthe common electrode layer comprises a plurality of mutually independent self-capacitance electrodes distributed along the strip-like slits and a direction crossing the strip-like slits; and the touch sensing chip is configured to apply common electrode signals to the self-capacitance electrodes in a display time period and determine touch positions by detecting capacitance value variation of self-capacitance electrodes in a touch time period; further comprising; a black matrix layer disposed on a side of the first substrate, which side faces the second substrate, or on a side of the second substrate, which side faces the first substrate; and in the common electrode layer, orthogonal projections of partitioning gaps in the direction crossing the strip-like slits on the second substrate are all within regions in which a pattern of the black matrix layer is located; a plurality of wires connecting the self-capacitance electrodes to the touch sensing chip;
wherein the wires and the self-capacitance electrodes are disposed on different layers; andpixel electrodes disposed between the second substrate and the common electrode layer;
wherein a layer where the wires are located is disposed between the pixel electrodes and the common electrode layer or on a same layer as the pixel electrodes;wherein opposite sides of adjacent two of self-capacitance electrodes are both configured as bend lines. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
Specification