Patent ID: 11946742
Assignee: STMICROELECTRONICS ASIA PACIFIC PTE LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 9:
10. A display device comprising:
a rollable display comprising a display side and an opposite non-display side;
a housing configured to house the rollable display and configured to roll in and roll out the rollable display along a direction;
a touchscreen on a display side of the rollable display, the touchscreen comprising a capacitive sensor and a touchscreen controller, the capacitive sensor comprising a plurality of lines of transmitter electrodes and a plurality of lines of receiver electrodes, the plurality of lines of transmitter electrodes being disposed perpendicular to the plurality of lines of receiver electrodes; and
an additional electrode disposed within the housing, coupled to the touchscreen controller, and configured to interact with the capacitive sensor,
an angular sensor configured to determine an angle of a hinge connected to the rollable display, wherein the touchscreen controller has a first program comprising instructions to:
determine a location of the rollable display relative to the additional electrode by identifying which one of the plurality of lines of transmitter electrodes or the plurality of lines of receiver electrodes is nearest to the additional electrode, the location being indicative of a fractional amount of the rollable display outside the housing.