Samsung Display Co., Ltd.

Dongwoo Fine-chem Co., Ltd.

In Nam Lee

Jang Hui Kim

Jae Won Kim

Hyun Jae Lee

Hyun Yeul Lee

Young-Sik Kim

Choon Hyop Lee

Jeong Heon Lee

Kang Won Lee

Mi Young Kim

Sung Ku Kang

Young Kuil Joo

Heung Seok Go

Young Sik Kim

Suk Ho Choi

Choon-Hyop Lee

Young Do Kim

Chang Bum Kim

Young Seok Yoo

Sung Hwan Kim

Hyung Chul Kim

Seung Hwan Chung

Sang Chul Lee

Jaehyun Lee

Byeong-Jin Lee

Joo-Han Bae

A Ra Jo

Jung-Yun Kim

Suk Hwan Choi

Hee Woong Park

Dong Eun Lee

Kyo Won Ku

Sang Chui Lee

Dongpil Park

A display device includes: a touch panel including a touch area including first touch electrodes and second touch electrodes; and a touch panel driver for providing touch driving signals to the first touch electrodes. The touch panel driver provides the touch driving signals to the first touch electrodes in a first touch sensing period of a first mode, operates in a second mode when the first touch is detected, and provides the touch driving signals to the first touch electrodes disposed in a first row area of the touch area in which the first touch is detected in a second touch sensing period of the second mode.

Display device and method of driving the same

A sensor device includes: first sensors connected to first sensor lines; second sensors connected to second sensor lines, the second sensors intersecting the first sensors; a sensor transmitter connected to the first sensors through the first sensor lines, the sensor transmitter configured to supply touch driving signals to the first sensors during a touch sensing period; and a sensor receiver connected to the second sensors through the second sensor lines, the sensor receiver configured to receive touch sensing signals from the second sensors during the touch sensing period, wherein the sensor receiver includes a plurality of analog front-ends, and wherein each of the plurality of analog front-ends is connected to at least one of the second sensor lines and at least one of the first sensor lines.

Sensor device and driving method thereof

A touch sensor including: a touch sensing area including driving electrodes and sensing electrodes; a driving signal generator which determines phases of driving signals based on a reference code and supplies the driving signals to the sensing electrodes, wherein the driving signals are sine waves; and a touch processor which receives sensing signals according to the driving signals from the sensing electrodes and determines a touch position based on the sensing signals and the reference code, wherein the driving signal generator controls the phases of the driving signals by updating the reference code at a predetermined time point.

Touch sensor and a display device including the same

An input sensing device includes an input sensing panel including driving electrodes and sensing electrodes, a driving signal generator that provides driving signals to the driving electrodes, respectively, and a sensing unit that receives sensing signals according to the driving signals from the sensing electrodes, and determines whether a touch is performed based on the sensing signals. Each of the driving signals includes a sinusoidal wave, and frequencies of at least some of the driving signals are different from each other.

Input sensing device and display device with sampling of sensing signal to reduce noise

An input sensing device includes driving electrodes and sensing electrodes, and an analog front-end which processes sensing signals from the sensing electrodes to output a differential output value. The analog front-end includes a first charge amplifier which differentially amplifies first and second sensing signals from two sensing electrodes to first and second input terminals, thus outputting first and second differential signals through first and second output terminals, a second charge amplifier which differentially amplifies the first and second differential signals, thus outputting third and fourth differential signals, a first demodulation circuit which filters the first and second differential signals in a first mode and filters each of the third and fourth differential signals in a second mode, and a first analog-to-digital converter which outputs a first sensing value based on at least one output signal of the first demodulation circuit.

Input sensing device and display device having the same

A display device including a display panel including pixels that emit light on a frame basis. An input sensing unit includes driving electrodes and sensing electrodes. A driving signal generator is configured to provide driving signals to the driving electrodes. Analog front-ends are configured to receive sensing signals depending on the driving signals from the sensing electrodes. A signal processor is configured to detect touch input, based on differential output values of the analog front-ends. The driving signal generator provides the driving signals to the driving electrodes while avoiding a period in which a pulse of a vertical synchronization signal defining start of the frame is generated.

Input sensing and display device with sinusoidal driving signals with different frequencies

An input sensing device includes a first base layer, a plurality of first sensing electrodes, a plurality of second sensing electrodes, a plurality of third sensing electrodes, and a plurality of fourth sensing electrodes. The first sensing electrodes are arranged on the first base layer along a first direction. The second sensing electrodes are arranged on the first base layer in different rows from the first sensing electrodes. The third sensing electrodes are arranged on the second sensing electrodes along a second direction different from the first direction. The third sensing electrodes overlap the second sensing electrodes. The fourth sensing electrodes are arranged on the same layer as the third sensing electrodes and overlap the first sensing electrodes. A constant voltage is applied to the third sensing electrodes during a touch pressure sensing operation.

Input sensing device and display device including the same

An optical touch film includes a sensor layer, an optical film, an adhesive layer, a separation layer, and a refractive insulating layer. The sensor layer includes touch electrodes forming a sensor. The adhesive layer is between the sensor layer and the optical film. The separation layer is on a surface of the sensor layer. The separation layer includes an organic polymer material. The refractive insulating layer is on the touch electrodes. A refractive index of the refractive insulating layer is greater than a refractive index of the separation layer.

Optical touch film, display device including the same, and manufacturing method thereof

Disclosed is a touch sensor that includes a support layer including a touch area and a non-touch area surrounding the touch area, a sensing electrode part disposed on the support layer and in the touch area, and an insulating layer disposed in the touch area and a portion of the non-touch area. The insulating layer has a trench disposed along a perimeter of the touch area in the non-touch area. Also disclosed is a display device that includes the touch sensor and a method of manufacturing the touch sensor.

Touch sensor, display device including the same, and method of manufacturing touch sensor

A touch sensing device includes a first base layer, a plurality of first sensing electrodes disposed on the first base layer and spaced apart in a first direction, a plurality of second sensing electrodes disposed on a same layer as the first sensing electrodes and arranged in different rows from the first sensing electrodes, a plurality of third sensing electrodes on the second sensing electrodes that are spaced apart along a second direction different from the first direction and that overlap the second sensing electrodes, and a plurality of fourth sensing electrodes on the first sensing electrodes that are spaced apart along the second direction and that overlap the first sensing electrodes. At least two of the second sensing electrodes are directly connected to each other.

Touch sensing device and display device including the same

Growing community of inventors

Yongin-si, South Korea

In Nam Lee