Method for detecting folding angle of foldable screen, touch chip, and touch panel
The present disclosure provides a method for detecting a folding angle of a foldable screen, a touch chip, a touch panel, and an electronic device, thereby effectively detecting a folding angle of a foldable screen of the electronic device. The method includes: acquiring detection data of a particular detection channel in a touch panel, where the touch panel includes a bending region extending along a first direction and a non-bending region distributed on both sides of the bending region along a second direction, the second direction is perpendicular to the first direction, and the particular detection channel is a first detection channel that is closest to the bending region or is located within the bending region among a plurality of first detection channels parallel to the first direction; and determining the folding angle of the foldable screen according to the detection data of the particular detection channel.
1 . A method for detecting a folding angle of a foldable screen, comprising:
acquiring detection data of a particular detection channel in a touch panel, wherein the touch panel comprises a bending region extending along a first direction and a non-bending region distributed on both sides of the bending region along a second direction, the second direction is perpendicular to the first direction, and the particular detection channel comprises a first detection channel that is closest to the bending region or is located within the bending region among a plurality of first detection channels parallel to the first direction; and
determining the folding angle of the foldable screen according to the detection data of the particular detection channel, wherein the detection data of the particular detection channel is self-capacitance detection data output from the particular detection channel, the self-capacitance detection data being data of a sensing signal output from the particular detection channel when a drive signal is input to the particular detection channel,
wherein the determining the folding angle of the foldable screen according to the detection data of the particular detection channel comprises:
determining the folding angle of the foldable screen according to the detection data of the particular detection channel and a function for representing a relationship between the detection data and the folding angle,
wherein the determining the folding angle of the foldable screen according to the detection data of the particular detection channel and the function for representing the relationship between the detection data and the folding angle comprises:
differentiating the detection data of the particular detection channel and detection data of a first detection channel adjacent to the particular detection channel to obtain differential data of the particular detection channel; and
determining the folding angle of the foldable screen according to the differential data of the particular detection channel and a function for representing a relationship between the differential data and the folding angle.
2 . The method according to claim 1 , wherein the determining the folding angle of the foldable screen according to the detection data of the particular detection channel comprises:
among the plurality of first detection channels, detection data of the first detection channel that is closest to the bending region or is located within the bending region is greater than detection data of other first detection channels.
3 . The method according to claim 1 , wherein the first detection channel that is closest to the bending region or is located within the bending region comprises a channel that is located in the middle of the foldable screen and a channel adjacent to the channel that located in the middle of the foldable screen.
4 . The method according to claim 1 , wherein the determining the folding angle of the foldable screen according to the detection data of the particular detection channel comprises:
determining the folding angle of the foldable screen based on at least one difference value between base data and raw data output from the particular detection channel, the base data is raw data output from the particular detection channel when the folding angle is a preset angle.
5 . The method according to claim 4 , wherein the preset angle is 180°.
6 . The method according to claim 4 , wherein the at least one difference value between base data and raw data output from the particular detection channel is a plurality of difference values, the method further comprising:
performing a weighted average of the plurality of the difference values.
7 . The method according to claim 1 , wherein the particular detection channel is provided as 6, 8 or 10 in number.
8 . The method according to claim 1 , wherein the differential data of the particular detection channel comprises first differential data and second differential data, wherein the first differential data is differential data between the particular detection channel and an adjacent first detection channel located on one side of the particular detection channel, and the second differential data is differential data between an adjacent first detection channel located on the other side of the particular detection channel and the particular detection channel; and
the determining the folding angle of the foldable screen according to the differential data of the particular detection channel and the function for representing the relationship between the differential data and the folding angle comprises:
determining a first folding angle according to the first differential data and a first function for representing a relationship between the first differential data and the folding angle;
determining, in response to the first folding angle exceeding a first preset range, a second folding angle according to the second differential data and a second function for representing a relationship between the second differential data and the folding angle; and
determining, in response to the second folding angle being located within a second preset range, the second folding angle as the folding angle of the foldable screen.
9 . A touch chip, being configured to detect a folding angle of a foldable screen of an electronic device, and comprising:
an acquisition module configured to acquire detection data of a particular detection channel in a touch panel, wherein the touch panel comprises a bending region extending along a first direction and a non-bending region distributed on both sides of the bending region along a second direction, the second direction is perpendicular to the first direction, and the particular detection channel comprises a first detection channel that is closest to the bending region or is located within the bending region among a plurality of first detection channels parallel to the first direction; and
a processing module configured to differentiate the detection data of the particular detection channel and detection data of a first detection channel adjacent to the particular detection channel to obtain differential data of the particular detection channel; and determine the folding angle of the foldable screen according to the differential data of the particular detection channel and a function for representing a relationship between the differential data and the folding angle, wherein the detection data of the particular detection channel is self-capacitance detection data output from the particular detection channel, the self-capacitance detection data being data of a sensing signal output from the particular detection channel when a drive signal is input to the particular detection channel.
10 . The touch chip according to claim 9 , wherein among the plurality of first detection channels, detection data of the first detection channel that is closest to the bending region or is located within the bending region is greater than detection data of other first detection channels.
11 . The touch chip according to claim 9 , wherein the first detection channel that is closest to the bending region or is located within the bending region comprises a channel that is located in the middle of the foldable screen and a channel adjacent to the channel that located in the middle of the foldable screen.
12 . The touch chip according to claim 9 , wherein the first detection channel that is closest to the bending region or is located within the bending region comprises a channel that is located in the middle of the foldable screen and a channel adjacent to the channel that located in the middle of the foldable screen;
the processing module is configured to:
determine the folding angle of the foldable screen based on at least one difference value between base data and raw data output from the particular detection channel, the base data is raw data output from the particular detection channel when the folding angle is a preset angle, wherein the preset angle is 180°.
13 . The touch chip according to claim 12 , wherein the at least one difference value between base data and raw data output from the particular detection channel is a plurality of difference values,
the processing module is configured to perform a weighted average of the plurality of the difference values.
14 . The touch chip according to claim 9 , wherein the particular detection channel is provided as 6, 8 or 10 in number.
15 . The touch chip according to claim 9 , wherein the differential data of the particular detection channel comprises first differential data and second differential data, wherein the first differential data is differential data between the particular detection channel and an adjacent first detection channel located on one side of the particular detection channel, and the second differential data is differential data between an adjacent first detection channel located on the other side of the particular detection channel and the particular detection channel;
the processing module is configured to:
determine a first folding angle according to the first differential data and a first function for representing a relationship between the first differential data and the folding angle;
determine, in response to the first folding angle exceeding a first preset range, a second folding angle according to the second differential data and a second function for representing a relationship between the second differential data and the folding angle; and
determine, in response to the second folding angle being located within a second preset range, the second folding angle as the folding angle of the foldable screen.
16 . An electronic device, comprising: a foldable screen; and the touch chip according to claim 11 , the touch chip being configured to detect a folding angle of the foldable screen.