Angle detection of hinges in rollable devices
AssigneeSTMicroelectronics Asia Pacific Pte Ltd
InventorsTae-gil Kang, Sung Kyu Kim, Sa Hyang Hong, Chang Woo Lee
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Abstract
In an example, a display device includes a rollable display including a display side and an opposite non-display side. The rollable display includes a conductive material with a pattern disposed on the non-display side. The device includes a housing configured to house the rollable display and configured to roll in and roll out the rollable display along a first direction, and a capacitive sensor including a transmitter and a receiver electrode disposed within the housing and configured to sense the pattern.
Claims20
A display device comprising:
- a rollable display comprising a display side and an opposite non-display side, the rollable display comprising a conductive material with a pattern disposed on the non-display side;
- a housing configured to house the rollable display and configured to roll in and roll out the rollable display along a first direction;
- and
- a capacitive sensor comprising a transmitter electrode and a receiver electrode, the transmitter electrode and the receiver electrode being disposed within the housing at fixed positions facing the non-display side, and the capacitive sensor being configured to sense the pattern.
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.
A method of displaying a media in a partially unrolled configuration of a rollable display, the method comprising:
- in response to sensing a motion of a rollable display from a first partially unrolled configuration to a second partially unrolled configuration,
- determining a number of rotations that occurred at a hinge of a housing for the rollable display using a capacitive sensor located at an opening of the housing during the motion of the rollable display;
- determining, using an angular sensor, a change in angle of a location of the hinge using the motion of the rollable display;
- and
- based on the number of rotations and the change in angle of the hinge, determine a fraction of the rollable display that is rolled out of the housing.
Dependencies are inferred from the claim text.