Hideep Inc.

Bong Jin Seo

Bon Kee Kim

Myung Jun Jin

Tae Yong Lee

Sang Sic Yoon

Hwan Hee Lee

Se Yeob Kim

Ho Jun Moon

Tae Hun Kim

Seyeob Kim

Bonkee Kim

Won Lee

Jae Bum Jun

A touch input device capable of detecting a pressure of a touch on a touch surface may be provided. The touch input device includes: a display panel; a substrate disposed under the display panel; and a pressure sensing unit. The pressure sensing unit includes a pressure sensor and a reference pressure sensor. When a pressure is applied to the touch surface, the display panel is bent. Electrical characteristics detected at the pressure sensor change by the bending of the display panel. A magnitude of the pressure applied to the touch surface is calculated based on a difference between a reference electrical characteristic calculated from electrical characteristics detected at the reference pressure sensor and the detected electrical characteristic calculated from the electrical characteristics detected at the pressure sensor.

Touch input device for detecting pressure with display noise compensation

A touch input device capable of detecting a pressure of a touch on a touch surface may be provided that includes: a display module; and a pressure sensor which is disposed at a position where a distance between the pressure sensor and a reference potential layer is changeable according to the touch on the touch surface. The distance is changeable according to a pressure magnitude of the touch. The pressure sensor outputs a signal including information on a capacitance which is changed according to the distance. The pressure sensor includes a plurality of electrodes to form a plurality of channels. The pressure magnitude of the touch is detected on the basis of a change amount of the capacitance detected in each of the channels. According to the embodiment of the present invention, it is possible to provide a pressure sensor for pressure detection, a touch input device including the same, and a pressure detection method using the same. In addition, according to the embodiment of the present invention, it is possible to provide the pressure sensor having a high-pressure detection accuracy of the touch and the touch input device including the pressure sensor.

Pressure sensor, touch input device including same, and pressure detection method using same

A method for correcting a touch pressure sensitivity may be provided that includes: a modeling profile data generation step of generating modeling profile data on the basis of a plurality of collected profile data; and a set profile data generation step of generating set profile data on the basis of the modeling profile data and a reference data of a predetermined touch input device. As a result, it is possible to correct the touch pressure sensitivity of a predetermined touch input device such that the touch pressure is sensed with a uniform sensitivity on the entire display surface of the touch input device.

Touch-pressure sensitivity correction method and computer-readable recording medium

A touch pressure sensitivity correction method may be provided that includes: defining a plurality of reference points on a touch sensor panel; generating a reference data for a capacitance change amount sensed by applying the same pressure to the plurality of reference points; generating an interpolated data corresponding to a capacitance change amount for a random point present between the plurality of reference points; calculating, on the basis of the reference data and interpolated data, with respect to the reference points and the random point respectively, a correction factor for correcting a sensitivity of a touch input device to a target value; and correcting uniformly for the touch pressure sensitivity of the touch input device by applying the calculated correction factor to each corresponding point.

Touch pressure sensitivity correction method and computer-readable recording medium

A sensitivity compensation method of a touch input device sensing a touch pressure may be provided. The sensitivity compensation method includes: defining a plurality of reference points spaced apart from each other on a touch sensor panel; generating a reference data corresponding to a capacitance change amount sensed by applying a predetermined pressure to the plurality of reference points; generating, on the basis of the reference data, an interpolated data corresponding to a capacitance change amount for a random point present between the plurality of reference points; calculating, on the basis of the generated reference data and interpolated data, with respect to the reference point and random point respectively, a compensation factor for compensating a sensitivity of the touch input device to a target value; and compensating uniformly for the sensitivity of the touch input device by applying the calculated compensation factor to each corresponding points.

Method for correcting sensitivity of touch input device that detects touch pressure and computer-readable recording medium

A touch input device capable of detecting a touch pressure may be provided, that includes: a display panel; and a pressure sensing unit which is disposed under the display panel. The pressure sensing unit includes one central pressure sensor for detecting the pressure and a plurality of non-central pressure sensors for detecting the pressure. An area of each of the non-central pressure sensors is less than that of the central pressure sensor.

Growing community of inventors

Gyeonggi-do, South Korea

Bong Jin Seo