Back to results
US 10,372,218 B2Granted
Touch sensitive element and display device including the same
AssigneeLG Display Co., Ltd.
InventorsYongWoo Lee, YongSu Ham, TaeHeon Kim, KyungYeol Ryu, YuSeon Kho, MyungJin Lim, SeulGi Choi
Life of this patent
Estimating the term…
Abstract
There is provided a touch sensitive element including an electroactive layer, and an electrode disposed on at least one surface of the electroactive layer. The electroactive layer has a first portion having a first thickness and a second portion which has a second thickness different from the first thickness and is in contact with the first portion at an outside of the first portion.
Claims27
A touch sensitive element, comprising:
- an electroactive layer comprising a first portion of a first thickness and a second portion of a second thickness that is greater than the first thickness;
- a first electrode electrically coupled to a surface of the first portion on the electroactive layer;
- a second electrode electrically coupled to a same surface or a different surface of the first portion of the electroactive layer as the first electrode, wherein a part of the first electrode and a part of the second electrode extend to the second portion of the electroactive layer;
- a first wiring line connected to the part of the first electrode, the first wiring line on the second portion of the electroactive layer;
- a second wiring line connected to the part of the second electrode, the second wiring line on the second portion of the electroactive layer;
- wherein the electroactive layer is configured to vibrate responsive to applying a voltage difference between the second electrode and the first electrode via the first wiring line and the second wiring line.
3 more elements
A display device, comprising:
- a structure;
- a touch sensitive element over the structure, the touch sensitive element comprising:
- an electroactive layer comprising a first portion of a first thickness and a second portion of a second thickness that is greater than the first thickness;
- a first electrode electrically coupled to a surface of the electroactive layer;
- and
- a second electrode electrically coupled to a same surface or a different surface of the electroactive layer as the first electrode, the electroactive layer configured to vibrate responsive to applying a voltage difference between the second electrode and the first electrode;
- and a touch element over the touch sensitive element, the touch element configured to sense touch and includes a plurality of touch electrodes;
- wherein at least a portion of the first portion of the electroactive layer is free from contacting with the structure such that an air gap is formed between the portion of the first portion of the electroactive layer and the structure, and the second portion of the electroactive layer is in contact with the structure.
5 more elements
A display device, comprising:
- a display panel;
- a cover window over the display panel;
- and
- a touch sensitive element under the cover window, the touch sensitive element including:
- an electroactive layer configured to vibrate responsive to an application of an electric field to the electroactive layer, the electroactive layer comprising a first portion having a first thickness and a second portion having a second thickness that is greater than the first thickness;
- wherein at least a portion of the first portion of the electroactive layer is free from contacting with the display panel such that an air gap is formed between the portion of the first portion of the electroactive layer and the display panel, and the second portion of the electroactive layer is in contact with the display panel.
3 more elements
Dependencies are inferred from the claim text.