Touch sensitive element and display device comprising the same
AssigneeLG Display Co., Ltd.
InventorsTaeHeon Kim, YongSu Ham, YongWoo Lee, KyungYeol Ryu, YuSeon Kho, MyungJin Lim, SeulGi Choi
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Abstract
Provided are a touch sensitive element and a display device including the same. The touch sensitive element according to an exemplary aspect of the present disclosure includes an electroactive layer formed of a linear boron nitride polymer and an electrode disposed on at least one surface of the electroactive layer. Therefore, a piezoelectricity of the electroactive layer is improved to improve vibration strength of the touch sensitive element and significantly improve heat resistance.
Claims16
A touch sensitive element, comprising:
- an electroactive layer formed of a linear boron nitride polymer;
- and
- an electrode disposed on at least one surface of the electroactive layer, to apply an electric field to the electroactive layer to induce vibration or bending, by an electric stimulation;
- wherein the linear boron nitride polymer has a high intensity of polarization and excellent piezoelectricity, and comprises a repeating unit represented by Chemical Formula 1,
- where R1 is a C1 to C20 alkyl group, a C1 to C20 alkenyl group, a C1 to C20 alkynyl group, a C5 to C20 aryl group, a C3 to C20 cycloalkyl croup, a C1 to C20 haloalkyl group or a halide group, and R2 is a C1 to C20 alkyl group, a C1 to C20 alkenyl group, a C1 to C20 alkynyl group, a C5 to C20 aryl group, a C3 to C20 cycloalkyl croup, a C1 to C20 haloalkyl group, a halide group or hydrogen, and x is an integer of 100 or larger.
A touch sensitive element, comprising:
- an electroactive layer formed of a linear boron nitride polymer;
- and
- an electrode disposed on at least one surface of the electroactive layer, to apply an electric field to the electroactive layer to induce vibration or bending, by an electric stimulation;
- wherein the linear boron nitride polymer has a high intensity of polarization and excellent piezoelectricity, and comprises a repeating unit represented by Chemical Formula 1,
- where R1 is a C1 to C20 alkyl group, a C1 to C20 alkenyl group, a C1 to C20 alkynyl group, a C5 to C20 aryl group, a C3 to C20 cycloalkyl group, a C1 to C20 haloalkyl group or a halide group, and R2 is a C1 to C20 alkyl group, a C1 to C20 alkenyl group, a C1 to C20 alkynyl group, a C5 to C20 aryl group, a C3 to C20 cycloalkyl group, a C1 to C20 haloalkyl group, a halide group or hydrogen, and x is an integer of 100 or larger, and
- wherein the touch sensitive element has a rate of change of a vibration acceleration measured at 110° C. that is equal to or less than 50% of a rate of change of a vibration acceleration measured at 25° C.
A display device, comprising:
- a display panel;
- and
- a touch sensitive element on an upper surface or a lower surface of the display panel,
- wherein the touch sensitive element includes an electroactive layer formed of a linear boron nitride polymer, and an electrode disposed on at least one surface of the electroactive layer, to apply an electric field to the electroactive layer to induce vibration or bending, by an electric stimulation;
- wherein the linear boron nitride polymer has a high intensity of polarization and excellent piezoelectricity, and comprises a repeating unit represented by Chemical Formula 1,
- where R1 is a C1 to C20 alkyl group, a C1 to C20 alkenyl group, a C1 to C20 alkynyl group, a C5 to C20 aryl group, a C3 to C20 cycloalkyl group, a C1 to C20 haloalkyl group or a halide group, and R2 is a C1 to C20 alkyl group, a C1 to C20 alkenyl group, a C1 to C20 alkynyl group, a C5 to C20 aryl group, a C3 to C20 cycloalkyl group, a C1 to C20 haloalkyl group, a halide group or hydrogen, and x is an integer of 100 or larger.
Dependencies are inferred from the claim text.