Method and apparatus for determining touching action and display device
View Patent ↗The present disclosure provides a method and apparatus for determining touching action and a display device. The method comprises the following steps of: determining a first touching region where a variation value of capacitance is larger than or equal to a first preset value during each period of N consecutive periods, in which N≥2; and outputting a touching signal according to the first touching region, wherein each period of the N consecutive periods is a scanning period of the touch pane. The embodiment of the present disclosure may scan all of the touching regions of the touch panel during N consecutive scanning periods, and then determine the first touching region has a variation value of capacitance larger than or equal to the first preset value during the N consecutive scanning periods to be a region touched by the user so as to output a touch signal based on the region. Since it can't determine a touching region has a variation value of capacitance larger than or equal to a preset value only during a few scanning periods, the accuracy for determining the touching event may be enhanced so as to avoid false trigger of the touching event of a touch panel by external noises.
1. A method for determining touching action applied to a touch panel, the touch panel comprising a plurality of touching regions, wherein the method comprises the following steps of:
detecting variation values of capacitance in each touching region of the plurality of touching regions;
determining a first touching region, wherein all of variation values of capacitance in the first touching region are larger than or equal to a preset value during each period of N consecutive periods, in which 5≥N≥3; and
outputting a touching signal according to the first touching region,
wherein each period of the N consecutive periods is a frame scanning period of the touch panel and the frame scanning period equals 2 ms;
wherein the method further comprises determining, as a region in which noise appears, a second touching region, wherein only n variation values of capacitance in the second touching region are larger than or equal to the preset value during n periods of the N consecutive periods n<N; and
recording a position of the second touching region so as to count and maintain the region in which the noise appears;
wherein the variation values of capacitance in the touching region are equal to a difference of a value of capacitance detected in the touching region with a preset capacitance for the touching region; and
wherein detecting variation values of capacitance in each touching region of the plurality of touching regions further comprises detecting a characteristic capacitance between two electrodes intersecting with each other.
2. The method for determining touching action according to claim 1 , wherein a total length of the N consecutive periods is from 5 ms to 10 ms.
3. The method for determining touching action according to claim 2 , wherein the total length of the N consecutive periods is 10 ms.
4. An apparatus for determining touching action applied to a touch panel, the touch panel comprising a plurality of touching regions, wherein the apparatus is configured to:
detect variation values of capacitance in each touching region of the plurality of touching regions
determine a first touching region, wherein all of variation values of capacitance in the first touching regions are larger than or equal to a preset value during each period of N consecutive periods, in which 5≥N≥3; and
output a touching signal according to the first touching region,
wherein each period of the N consecutive periods is a frame scanning period of the touch panel and the frame scanning period equals 2 ms;
wherein the apparatus is further configured to determine, as a region in which noise appears, a second touching region, wherein only n variation values of capacitance in the second touching regions are larger than or equal to the preset value during n periods of the N consecutive periods, n<N; and record a position of the second touching region so as to count and maintain the region in which the noise appears;
wherein the variation values of capacitance in the touching region are equal to a difference of a value of capacitance detected in the touching region with a preset capacitance for the touching region; and
wherein the apparatus is further configured to detect a characteristic capacitance between two electrodes intersecting with each other.
5. The apparatus for determining touching action according to claim 4 , wherein a total length of the N consecutive periods is from 5 ms to 10 ms.
6. The apparatus for determining touching action according to claim 5 , wherein the total length of the N consecutive periods is 10 ms.
7. A display device comprising the apparatus according to claim 4 .