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US 10,379,578 B2Granted
Flexible display device and driving method thereof
AssigneeSamsung Display Co., Ltd.
InventorMin Su An
Life of this patent
Estimating the term…
Abstract
A flexible display device, comprising: a flexible display panel; and at least one displacement sensor, which is disposed at a boundary region of the flexible display panel, emitting emission waves and receiving reflected waves, wherein the reflected waves are emission waves that are returning after being reflected, and determining a bend angle of the flexible display panel according to a displacement calculated based on the reflected waves.
Claims20
A flexible display device, comprising:
- a flexible display panel;
- and
- at least one displacement sensor, disposed at a boundary region of the flexible display panel, configured to emit emission waves and receive reflected waves, wherein the reflected waves are emission waves that are returning after being reflected,
- measures a displacement by using a time difference between an emission time of the emission waves and a reception time of the reflected waves,
- and determine a bend angle of the flexible display panel according to the displacement calculated based on at least one of the reflected waves from flexible display panel,
- wherein the displacement sensor is further configured to emit emission waves where at least a portion of each of the emission waves is above a first surface of the flexible display panel and the emission waves are emitted not to be reflected by the flexible display panel when the flexible display panel is in a bent state,
- wherein the displacement sensor is further configured to emit the emission waves directly to a protruding unit protruded from the flexible display panel when the flexible display panel is in a flat state, so that the emission waves are reflected by the protruding unit, and
- wherein the protruding unit is disposed at the boundary region of the flexible display panel.
5 more elements
A driving method of a flexible display device, comprising:
- emitting, by using at least one displacement sensor, emission waves, which are at least one of electromagnetic waves and ultrasonic waves, toward a flexible display panel, wherein at least a portion of each of the emission waves is above a surface of the flexible display panel, and the emission waves are emitted not to be reflected by the flexible display panel when the flexible display panel is in a bent state;
- receiving reflected waves which are returning reflected emission waves from the flexible display panel;
- measuring a displacement by using at least one of a time difference between an emission time of the emission waves and a reception time of the reflected waves;
- and
- determining a bend angle of the flexible display panel based on the displacement,
- wherein the displacement sensor is further configured to emit the emission waves directly to a protruding unit protruded from the flexible display panel when the flexible display panel is in a flat state, so that the emission waves are reflected by the protruding unit, and
- wherein the protruding unit is disposed at the boundary region of the flexible display panel.
4 more elements
A flexible display device, comprising:
- a flexible display panel;
- and
- at least one displacement sensor, disposed at a boundary region of the flexible display panel, configured to emit emission waves and receive reflected waves, wherein the reflected waves are emission waves that are returning after being reflected by the flexible display panel,
- measures a displacement by using a time difference between an emission time of the emission waves and a reception time of the reflected waves,
- and determine a bend angle of the flexible display panel according to the displacement calculated based on at least one of the reflected waves from flexible display panel,
- wherein the displacement sensor is further configured to emit emission waves where at least a portion of each of the emission waves is above a first surface of the flexible display panel and the emission waves are at least one of emitted to be parallel to the surface when the flexible display panel is in a flat state, or directed toward the flexible display panel when the flexible display panel is in a flat state and emitted not to be reflected by the flexible display panel when the flexible display panel is in a bent state,
- wherein the displacement sensor is further configured to emit the emission waves directly to a protruding unit protruded from the flexible display panel when the flexible display panel is in a flat state, so that the emission waves are reflected by the protruding unit, and
- wherein the protruding unit is disposed at the boundary region of the flexible display panel.
5 more elements
Dependencies are inferred from the claim text.