MXT1664T3-ABESSQTP datasheet(31/98 Pages) MICROCHIP

31 / 98 page

MXT1664T3 2.0

 2018 Microchip Technology Inc.

DS40002054A-page 31

The Lens Bending T65 object measures the bend component and compensates for any distortion caused by the

bend. As the bend component is primarily influenced by the user touch force, it can be used as a secondary source to

identify the presence of a touch. The additional benefit of the Lens Bending T65 object is that it will eliminate LCD noise

as well.

6.11

Glove Detection

The device has glove detection algorithms that process the measurement data received from the touchscreen

classifying touches as potential gloved touches.

The Glove Detection T78 object is used to detect glove touches. In Normal Mode the Glove Detection T78 object applies

vigorous glove classification to small signal touches to minimize the effect of unintentional hovering finger reporting.

Once a gloved touch is found, the Glove Detection T78 object enters Glove Confidence Mode. In this mode the device

expects the user to be wearing gloves so the classification process is much less stringent.

6.12

Stylus Support

The mXT1664T3 allows for the particular characteristics of passive stylus touches, whilst still allowing conventional

finger touches to be detected. The touch sensitivity and threshold controls for stylus touches are configured separately

from those for conventional finger touches so that both types of touches can be accommodated.

Stylus support ensures that the small touch area of a stylus registers as a touch, as this would otherwise be considered

too small for the touchscreen. Additionally, there are controls to distinguish a stylus touch from an unwanted

approaching finger (such as on the hand holding the stylus).

Passive stylus touches are configured by the Passive Stylus T47 object. There is one instance of the Passive Stylus

T47 object for each Multiple Touch Touchscreen T100 object present on the device.

6.13

Unintentional Touch Suppression

The Touch Suppression T42 object provides a mechanism to suppress false detections from unintentional touches from

a large body area, such as from a face, ear or palm. The Touch Suppression T42 object also provides Maximum Touch

Suppression to suppress all touches if more than a specified number of touches has been detected. There is one

instance of the Touch Suppression T42 object for each Multiple Touch Touchscreen T100 object present on the device.

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