Samsung Display Co., Ltd.

Samsung Electronics Co., Ltd.

Seiki Takahashi

Bong-Hyun You

Sang-Soo Kim

Byoung-Jun Lee

Hee-Jin Choi

Eiji Kanda

Takeshi Okuno

Hiroshi Ohishi

Jae-Hoon Lee

So-Young Kim

Jun-Pyo Lee

Sung-jae Moon

Jai-Hyun Koh

Yong-Hwi Kim

Satoru Saito

Masahiko Yoshiyama

The pixel circuit includes a light-emitting element, an optical sensor for detecting a luminance of light emitted from the light-emitting element, and a compensation control circuit which controls the amount of the current supplied to the light-emitting element on the basis of a detection result of the optical sensor and a second voltage applied in a second interval different from a first interval with a predetermined length in which the light-emitting element is allowed to constantly emit light with a luminance based on a first voltage, and includes a first control circuit and a second control circuit where the first control circuit controls a first current amount for enabling the light-emitting element to emit light and the second control circuit controls a second current amount supplied to the light-emitting element.

Display apparatus and display method

An image processing device includes a hue changer and a color gamut converter. The hue changer changes a hue of input image data from a first hue to a second hue by combining a phase with a hue of a primary color when the input image data is at or adjacent the primary color, the phase being based on a hue angle phase difference between a first color gamut and a second color gamut narrower than the first color gamut. The color gamut converter preserves a hue about image data from the hue changer and converts a color gamut from the first color gamut to the second color gamut.

Image processing circuit and image processing method

A display device includes pixel circuits arranged in a matrix, each of the pixel circuits including: a light-emitting element; an optical sensor to detect luminance of light emitted from the light-emitting element; and a compensation control circuit including a first capacitor and a second capacitor, the first and second capacitors to maintain a second voltage applied to the compensation control circuit. The compensation control circuit controls the light-emitting element to constantly emit light having a luminance based on a first voltage during a first interval of a light emission interval. The compensation control circuit controls the amount of current supplied to the light-emitting element based on a detection result of the optical sensor and the second voltage maintained in the first and second capacitors during a second interval and a third interval of the light emission interval, respectively.

Display apparatus, display method, and program

The device includes a hue compensator converting hue of input signals having a first color gamut representing image data to hue conversion signals, a gamut converter outputting the input signals as gamut conversion signals having a second color gamut to display the input signals on an image display device representing the second color gamut, a blend coefficient setter that sets a blend coefficient defining a synthesis ratio of the hue conversion signals and the gamut conversion signals based on saturation obtained from the input signals, and a color synthesizer that generates synthesized image signals by synthesizing the hue conversion signals and the gamut conversion signals at a ratio according to the blend coefficient. The gamut converter performs conversion such that a value of each component of the hue conversion signals is from 0 to 1 when a value of each component of the input signals is from 0 to 1.

Image processing device and image processing method

An image processor includes a input converter converting an input image into linear first image data of a first color gamut; a color gamut converter converting first image data into second image data expressing a second color gamut narrower than the first color gamut; a blend coefficient selector selecting a first blend coefficient when hue and saturation belong to a first color domain range, a second blend coefficient, having a reduced synthesis ratio of second image data compared with the first blend coefficient, when hue and saturation belong to a second color domain range, and a third blend coefficient, between the first and second blend coefficients, when hue and saturation belong to a color domain between the first color domain range and the second color domain range; and a color synthesis unit synthesizing first image data and second image data according to the decided blend coefficient.

Image processing device, image processing method and program

A method for detecting a touch position includes integrating a readout current detected at a sensing part to generate an integrated readout voltage, converting the integrated readout voltage into a digital converted readout voltage data and compensating a variation of the digital converted readout voltage data to determine whether the sensing part is touched.

Method and apparatus for detecting a touch position, and touchscreen display apparatus having the same

A touchscreen display substrate includes; a plurality of pixel parts including a plurality of first pixel rows arranged in a first direction, and a plurality of pixel columns arranged in a second direction substantially perpendicular to the first direction, wherein each of the plurality of pixel parts includes a pixel electrode, and a plurality of sensing parts which sense a touch state, the sensing parts being disposed in an area corresponding to the plurality of pixel parts, and being sequentially arranged in the first direction between adjacent pixel parts of first plurality of pixel columns.

Touchscreen display substrate with a sensing part formed in an area corresponding to a plurality of pixel areas and touchscreen display apparatus having the same

A touch display substrate comprises a base substrate, a plurality of pixel portions, a sensing element portion and a sensing line portion. The pixel portions can be arranged in at least one pixel column and at least one pixel row on the base substrate, and may include a pixel electrode. The sensing element portion may be disposed in a first column between a first pixel column and a second pixel column, and senses a touch. The sensing line portion may be disposed in a second column between adjacent pixel columns and coupled to the sensing element portion, and the second column is different from the first column. The sensing line portion may be disposed between pixel columns different from the pixel columns where the sensing element portion is disposed so that an aperture ratio of the touch screen display apparatus may be enhanced.

Touch display substrate and touch screen display apparatus having the same

There is provided a touch screen apparatus capable of detecting the presence a touch action and a position in a touch region depending on a change in electrical energy of one node of a touch sensor. A touch screen apparatus according to the present invention includes a plurality of pixels for displaying images and a plurality of touch sensors. Each of the plurality of touch sensors includes a first node being provided an electrical energy; a sensor capacitor for changing the electric potential energy of the first node depending on presence a touch action; a first switch for providing a sensing signal to the touch line controlled by the electrical energy of the first node; and a second switch for providing the electrical energy to the first node.

Touch screen apparatus

A liquid crystal display includes: a liquid crystal panel; a plurality of first light sources disposed below the liquid crystal panel; a first diffusion member disposed between the liquid crystal panel and the first light sources; a plurality of second light sources disposed below the liquid crystal panel and which emit a sensing signal toward the liquid crystal panel; and a plurality of sensors disposed in or below the liquid crystal panel. The sensing signal emitted from the plurality of second light sources toward the liquid crystal panel is reflected by an object disposed above the liquid crystal panel and is detected by the plurality of sensors before transmitting through the first diffusion member away from the liquid crystal panel such that a shape of the object is determined based on the sensing signal reflected from the object and detected by the plurality of sensors.

Liquid crystal display having first and second diffusion members and a plurality of sensors that can detect a sensing signal reflected from an object

A display apparatus includes a display panel, a light generator disposed under the display panel to generate light, a light sensor disposed between the display panel and the light generator and which senses a first portion of the light generated by the light generator and reflected by an object disposed above the display panel, a light diffuser disposed between the display panel and the light sensor, and an image processor which provides image data corresponding to the first portion of the light sensed by the light sensor to the display panel.

Display apparatus

A display device includes: a first substrate; a gate line formed on the first substrate; a first switching device connected to the gate line; a pixel electrode connected to the first switching device; a light-receiving device formed on the first substrate and which senses infrared light; and a light-shielding pattern disposed between the first substrate and the light receiving device. The light-shielding pattern overlaps the light-receiving device and blocks light.

Growing community of inventors

Cheonan-si, South Korea

Seiki Takahashi