Samsung Display Co., Ltd.

Hanlim Pharm. Co., Ltd.

Jae-Shin Kim

Gun-Shik Kim

Jun-Sik Oh

Jong-Woong Park

Soon-Ryong Park

Hee-Seong Jeong

Woo-Suk Jung

Joo-Hwa Lee

Ho-Suk Maeng

Bo-Young An

Byung-Ki Chun

Won-Woo Jang

Hee-Chul Hwang

Ja-seung Ku

Jeong-Hun So

Shingo Kawashima

You-Sup Chung

Min-Jeung Lee

A method for driving an electroluminescent display device includes grouping pixels in a display panel into a plurality of pixel groups, each pixel group including a plurality of rows and a plurality of columns. Accumulated block stress values are provided based on input image data. Each accumulated block stress value represents a degree of degeneration of the pixels in each pixel block. Corrected stress values are provided by correcting each accumulated block stress value based on the accumulated block stress values of the adjacent pixel blocks. Input image data is corrected based on the corrected stress values.

Electroluminescent display device and method of driving the same to compensate for degeneration of pixels

A degradation compensating device includes an accumulator configured to accumulate stress data every pixel block, a memory configured to receive the stress data from the accumulator, and to load accumulated data from an external flash memory when a display device power is turned on, the accumulated data being a total sum of the stress data, a compensation factor calculator configured to determine a target compensation factor based on the accumulated data to compensate image data, and to apply an initial compensation factor to the target compensation factor during a wake-up period after loading the accumulated data is completed, the initial compensation factor being changed gradually during the wake-up period, and a data compensator configured to generate image compensation data based on the target compensation factor, and to generate initial image data based on a wake-up factor that is an adjusted target compensation factor based on the initial compensation factor.

Degradation compensating device, organic light emitting display device having the same, and method for driving organic light emitting display device

A data signal processing device includes a load calculator and a compensation processor. The load calculator calculates an on-pixel rate (OPR) based on image data signals and positional weight values. The positional weight values are determined based on locations of pixels in a display panel. The OPR is proportional to a frame luminance load, which corresponds to a sum of driving currents for the pixels to emit light in each of a plurality of frames. The compensation processor compensates distorted luminance caused by the frame luminance load based on the OPR.

Data signal processing device and display device having the same

A flat panel display, which can save manufacturing costs and allow various types of dither masks to be applied, and a driving method thereof are disclosed. The flat panel display includes a look-up table (LUT) storing one dither mask, which is used to algorithmically generate additional dither masks. The dither masks are applied to image data to improve image quality.

Flat panel display and method of driving the same

A display device and driving method are disclosed. The display device is configured to determine local areas in which motion blur is expected. Black data is inserted into the image data in the areas to compensate and reduce the motion blur.

Display device and image processing method thereof

A display device and a driving method thereof for easily determining photographing timing and recognizing text by improving field visibility. The display device includes: a signal controller generating image data and an image control signal in accordance with an input signal; and a display unit including scan lines transmitting scan signals, data lines transmitting data signals, and pixels connected to the scan lines and data lines and displaying an image corresponding to the image data. Here, when the input signal is an image signal for displaying a photographed image or text, the signal controller generates the image data to correspond to a unit frame period composed of frames as weighted image data corresponding to one of the frames, and the display device displays an image corresponding to the weighted image data to have an energy proportional to a number of the frames in the unit frame period.

Display device and driving method thereof

A pixel arrangement of an organic light emitting display device with a plurality of repeatedly arranged sub-pixel groups, each of the sub-pixel groups includes two first sub-pixels in i-th and (i+2)-th columns (i is a natural number), two second sub-pixels in the i-th and (i+2)-th columns, the second sub-pixels being arranged in different rows with respect to the first sub-pixels, and two third sub-pixels in (i+1)-th and (i+3)-th columns, each third sub-pixel being arranged to overlap at least two adjacent rows of the first and second sub-pixels.

Pixel arrangement of an organic light emitting display device

A method of detecting a touch point includes detecting an edge image of a finger image from an input image, generating a touch point image utilizing the detected edge image, and calculating coordinates of the touch point from the touch point image. The touch point image may be generated by setting a center at a position separated by a set distance in a gradient direction with respect to a position where the edge image is detected, and generating the touch point image by summing up gradient magnitude values with respect to a set area based on the set center. The coordinates of multiple touch points may be calculated by updating coordinates of the multiple touch points according to the gradient magnitude values accumulatively summed up in the multiple touch points based on a comparison between the coordinates of the multiple touch points and the set distance.

Method and apparatus for detecting touch point

A pixel arrangement structure for an organic light emitting display including a plurality of sub-pixel groups repeatedly arranged, wherein each of the sub-pixel groups includes: four first sub-pixels for emitting light of a first color and each having a hexagonal structure, two second sub-pixels for emitting light of a second color and each including two hexagonal structures sharing one side, and two third sub-pixels for emitting light of a third color and each including two hexagonal structures sharing one side. Two of the four first sub-pixels are arranged in a same column and share a symmetrical axis, and the two second sub-pixels and the two third sub-pixels are alternately arranged on either side of the symmetrical axis.

Pixel arrangement structure for organic light emitting display

A pixel arrangement of an organic light emitting display device includes first sub-pixels and second sub-pixels alternately arranged in a first direction to define a plurality of first columns along the first direction, and third sub-pixels arranged along the first direction to define a plurality of second columns along the first direction among the first columns, two second columns of the third sub-pixels being arranged among three first columns of the alternating first and second sub-pixels.

Growing community of inventors

Yongin, South Korea

Jae-Shin Kim