US 9,310,945 B2Granted

Touch-sensing display device

AssigneeHimax Technologies Limited

InventorsJui-Ming Liu, Li-Lin Liu, Chung-Wen Chang, Shen-Feng Tai

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Abstract

A touch-sensing display device comprises a plurality of row electrodes and column electrodes, a capacitance detector, detecting first capacitance-variation values of the row electrodes and second capacitance-variation values of the column electrodes, and detecting third capacitance-variation values of each intersection of the row electrodes and the column electrodes. The processor counts the first number of the first and second capacitance-variation values, exceeding a first threshold, counts the second number of the first and second capacitance-variation values up to a maximum capacitor-variation value, and counts the third number of the third capacitance values, exceeding a second threshold. The processor makes the touch-sensing display device enter a bending mode when the first and second numbers are over a first predetermined number and a second predetermined number respectively, and the third number is below the first number. The processor further raises the second threshold when entering the bending mode.

Claims9

Dependent claims

A touch-sensing display device, comprising:

a plurality of row electrodes and column electrodes;
a capacitance detector, detecting first capacitance-variation values of each of the row electrodes with respect to a reference and second capacitance-variation values of each of the column electrodes with respect to the reference, and detecting third capacitance-variation values of each intersection of the row electrodes and the column electrodes;
and
a processor, carrying out a first operation to determine the entering of a bending mode, according to the first, second and third capacitance-variation values;
in the first operation, the processor counting the first number of the first and second capacitance-variation values which exceed a first threshold, counting the second number of the first and second capacitance-variation values which are up to a maximum capacitor-variation value, and counting the third number of the third capacitance values which exceed a second threshold;
the processor making the touch-sensing display device enter the bending mode when the first and second numbers are over a first predetermined number and a second predetermined number respectively, and the third number is below the first number;
the processor carrying out a second operation to raise the second threshold when the touch-sensing display device is in the bending mode.

4 more elements

A method for reducing the misreporting of the touch point of a touch-sensing display device, comprising:

providing a plurality of row electrodes and column electrodes;
detecting first capacitance-variation values of each of the row electrodes with respect to a reference and second capacitance-variation values of each of the column electrodes with respect to the reference, and detecting third capacitance-variation values of each intersection of the row electrodes and the column electrodes;
counting the first number of the first and second capacitance-variation values which exceed a first threshold, counting the second number of the first and second capacitance-variation values which are up to a maximum capacitor-variation value, and counting the third number of the third capacitance values which exceed a second threshold, in the first operation;
carrying out a first operation to determine the entering of a bending mode, according to the first, second and third capacitance-variation values;
making the touch-sensing display device enter the bending mode when the first and second numbers are over a first predetermined number and a second predetermined number respectively, and the third number is below the first number;
and
carrying out a second operation to raise the second threshold when the touch-sensing display device is in the bending mode.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/054,332Filed 15 Oct 2013
Published: US 2015/0103031 A116 Apr 2015
Granted: 12 Apr 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

G06F 3/04166
Control or interface arrangements specially adapted for digitisers: details of scanning methods, e.g. sampling time, grouping of sub areas or time…
G06F 3/04186
For error correction or compensation, e.g. based on parallax, calibration or alignment: touch location disambiguation
G06F 3/044
Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means: by capacitive means
G06F 3/0446
By capacitive means: using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes