US 10,503,307 B2 · Flexible display device and driving method thereof

Abstract

A flexible display device includes a flexible display panel to generate an image and a bending detection screen to detect a bending angle and a bending position. The bending detection screen includes an angle detection sensor and a position detection sensor. The angle detection sensor includes a material with a resistance that changes in correspondence to an intensity of an applied stress. The angle detection sensor has an area per unit length that is substantially constant on a base surface. The position detection sensor includes a material with a resistance that changes in correspondence to an intensity of the applied stress. The position detection sensor has an area per unit length that increases along a length direction on the base surface. Signal lines are connected to the angle and position detection sensors.

Claims20

Dependent claims

A flexible display device, comprising:

a flexible display panel to generate an image;
and
a bending detection screen to detect a bending angle and a bending position, wherein the bending detection screen includes:
an angle detection resistive sensor having an area per unit length that is substantially constant on a base surface;
a position detection resistive sensor having an area per unit length that increases along a length direction on the base surface such that a slope of a resistance change rate of the position detection resistive sensor according to the bending angle increases along the length direction;
signal lines connected to the angle and position detection resistive sensors;
and
a bending detection circuit configured to detect resistance change values of the angle detection resistive sensor and the position detection resistive sensor in correspondence to an applied stress.

5 more elements

A method for driving a display device, the method comprising:

measuring a resistance change value of an angle detection resistive sensor, the angle detection resistive sensor including a material with a resistance that changes in correspondence to intensity of an applied stress and having an area per unit length that is substantially constant;
measuring a resistance change value of a position detection resistive sensor, the position detection resistive sensor including a material with a resistance that changes in correspondence to intensity of the applied stress and having an area per unit length that is increased along a length direction such that a slope of a resistance change rate of the position detection resistive sensor according to the bending angle increases along the length direction;
calculating a bending angle of a bending event based on the resistance change value of the angle detection resistive sensor;
and
calculating a bending position of the bending event based on the resistance change value of the angle detection resistive sensor and a resistance change value of the position detection resistive sensor.

2 more elements

Dependencies are inferred from the claim text.

Flexible display device and driving method thereof

Life of this patent

Flexible display device and driving method thereof

Life of this patent

Abstract

Claims20