US 10,884,557 B2 · Touch input device

Abstract

A touch input device which detects a touch position and a touch pressure magnitude may be provided that includes: a display module; a first electrode and a second electrode which are disposed on the display module and are spaced apart from each other; a spacer layer which is formed on the display module and covers the first electrode and the second electrode; and a transparent ground electrode which is disposed on the spacer layer and is formed of a material having transparency. A distance between the transparent ground electrode and the display module is changed by inputting a touch on the transparent ground electrode, and a capacitance between the first electrode and the second electrode is changed by the distance change. The position of the touch and the pressure magnitude of the touch are detected based on the changed capacitance.

Claims19

Dependent claims

A touch input device detecting a touch position and a touch pressure magnitude, the touch input device comprising:

a display module;
a first electrode and a second electrode which are disposed on a top surface of the display module and are spaced apart from each other;
a spacer layer which is formed on the top surface of the display module and covers the first electrode and the second electrode, and includes nanoparticles;
and
a transparent ground electrode which is disposed on the spacer layer, is disposed above the first electrode and the second electrode, and is formed of a material having transparency,
wherein the transparent ground electrode is disposed at a height equal to or greater than a height at which an electric field region is formed between the first electrode and the second electrode,
wherein when the spacer layer is compressed, a dielectric constant between the first electrode and the second electrode is increased by a density change of the nanoparticles
and wherein a pressure magnitude of a touch is detected based on the increased dielectric constant.

5 more elements

A touch input device which detects a position of a touch input to a touch surface and a pressure magnitude of the touch, the touch input device comprising:

a plurality of sensors;
an insulating layer which is disposed on the plurality of sensors, is composed of an elastic material, and includes a plurality of conductive materials wherein the plurality of conductive materials are a plurality of nanoparticles;
and
a ground layer which is disposed on the insulating layer and is disposed on some sensors among the plurality of sensors,
wherein when the insulating layer is compressed, a dielectric constant of the insulating layer is increased by a density change of the nanoparticles, and
wherein the pressure magnitude of the touch is detected based on the increased dielectric constant.

3 more elements

Dependencies are inferred from the claim text.

Touch input device

Life of this patent

Touch input device

Life of this patent

Abstract

Claims19