Samsung Display Co., Ltd.

Lg Electronics Inc.

Samsung Electronics Co., Ltd.

Korea Advanced Institute of Science and Technology

Won-Sik Oh

Min-Soo Choi

Joon-Chul Goh

Hyuk Soo Lee

Tae-Jin Kim

Kuk-Hwan Ahn

Hyung-Jin Kim

Jung-Sik Park

Sang-Sub Jeong

Seung-Wan Kim

Hwan-Woong Lee

Young-Sup Kwon

Seung-Hwan Moon

Bong-Hyun You

Dong-Won Park

Bong-Im Park

Moon-Shik Kang

Hyuk Jae Lee

Hyun Sik Hwang

Ik Hyun Ahn

Nam-Deog Kim

Mun-Soo Park

Gun-Woo Moon

Ki-Chul Choi

Youngsup Kwon

Ho-Seok Son

Eun-Ho Lee

Yong-Jun Jang

Hyun-Dae Lee

Yoon-gu Kim

Hyun-Sik Hwang

Hyun-sik Hwang

Young-Woo Choi

Dong-Hwa Shin

Gi-Geun Kim

Sang-Man Oh

Ja-Min Koo

Dae-Youn Cho

Kyu-Min Cho

Byeong-Hwan Kim

Jin-Won Jang

Eun-Chul Shin

A display panel includes a plurality of gate lines extending in a first direction and including first and second gate lines adjacent to each other. A plurality of data lines extends in a second direction that crosses the first direction and includes first and second data lines adjacent to each other. A plurality of sub-pixels are arranged in a matrix configuration, each row of the matrix being disposed between two adjacent gate lines, from among the plurality of gate lines, each column of the matrix being disposed between two adjacent data lines, from among the plurality of data lines. The plurality of sub-pixels includes first column sub-pixels disposed on a first column of the matrix and connected to the first data line. Second column sub-pixels are disposed on a second column of the matrix and are connected to the second data line, the second column being adjacent to the first column. First row sub-pixels are disposed on a first row of the matrix and are alternately connected to the first and second gate lines in units of two sub-pixels.

Display panel and display apparatus having the same

A method of compensating an image to be display on a display panel is disclosed. In one aspect, the method includes receiving a first input image and adjusting a contrast sensitivity of the first input image. The method also includes calculating a first derivative of luminance of a pixel included in the adjusted image, calculating a second derivative of the luminance of the pixel, and accumulating the first and second derivatives. The method further includes determining a burn-in causing boundary based at least in part on the accumulated first and second derivatives, receiving a second input image, and comparing the burn-in causing boundary to a boundary of the second input image to determine whether to apply burn-in compensation. The method finally includes compensating a portion of the second input image corresponding to the burn-in causing boundary based at least in part on an unsharpening filter.

Method of compensating image to be displayed on display panel

A method of driving a display panel includes comparing a previous line data and a present line data to generate a charge sharing enable (EQ) signal indicating whether or not a charge sharing is to be applied to a pixel; selectively applying the charge sharing to the present line data utilizing a charge sharing voltage according to the EQ signal to generate a data voltage; and outputting the data voltage to the pixel.

Method of driving display panel and display apparatus for performing the same

A method of driving a display panel is disclosed. In one aspect, the display panel includes a plurality of pixels, each of the pixels including a first transistor connected to a first gate line and a pixel electrode and a second transistor connected to a second gate line and the pixel electrode. The method including alternately providing the first gate line with a gate signal and a reverse bias signal and alternately providing the second gate line with the gate signal when the first gate line is provided with the reverse bias signal and the reverse bias signal when the first gate line is provided with the gate signal.

Method of driving a display panel and display device performing the same

A display device and a driving circuit thereof are disclosed. In one aspect, the display device includes a display panel, a gamma reference voltage generator, a data driver and a driving controller. The display panel includes a plurality of pixels, each pixel including first and second sub-pixels. The gamma reference voltage generator generates one or more first gamma reference voltages each having a high gamma value greater than a reference gamma value, and one or more second gamma reference voltages each having a low gamma value less than the reference gamma value. The data driver generates a data voltage based at least in part on one or more of the first and second gamma reference voltages, and provides the data voltage to the first and second sub-pixels. The driving controller determines a gamma value and a data voltage output pattern according to a driving method of the display panel.

Display device and driving circuit thereof for improving the accuracy of gamma tuning

A light source apparatus includes a plurality of light source parts, a power supply part, a current selection part and a current control part. The plurality of the light source parts are connected in parallel and the power supply part provides power to a first terminal of each of the light source parts. The current selection part selects the current level of one of the light source parts as a reference current level. The current control part adjusts the levels of the currents flowing through the light source parts to be substantially equal to the reference current level. Selection of the light source part that provides the reference current level is dynamically changed.

Method of driving a light source, light source apparatus for performing the method and display apparatus having the light source apparatus

A method of driving a light source includes outputting a variable driving voltage to a light source part, sensing a first voltage based on the driving voltage and developed at a first end of the light source part, sensing a second voltage developed at a second end of the light source part due to current passing through the light source part and adjusting the driving voltage while using the first and second voltages so that power consumption by the light source part is substantially constant irrespective of temperature of the light source part and/or irrespective of a duty cycle ration being used to drive the light source part. Thus, a luminance of the light source part may be maintained at substantially uniform levels.

A method of driving a light source includes receiving an alternating current ('AC') voltage from outside, generating a first direct current ('DC') voltage based on the AC voltage, generating a second DC voltage, corresponding to a difference between a driving voltage of a light source part and the first DC voltage, based on the first DC voltage, and outputting a sum of the first DC voltage and the second DC voltage to the light source part.

Method of driving light source, light source module for performing the method and display apparatus having the light source module

A light source apparatus includes a light source disposed adjacent to a side portion of a light guide plate and a light source driver driving the light source. The light source driver includes a booster and a protecting circuit. The booster boosts an input voltage to a driving voltage for driving the light source. The protecting circuit selectively cuts off the input voltage applied to the booster according to an output current of the booster, reducing the risk of damage to the driver due to shorts, overcurrents, or the like.

Method of driving a light source and light source apparatus for performing the method

A backlight unit includes a driving circuit, a plurality of light source strings, and an error detector. The driving circuit outputs a driving voltage. Each of the light source strings includes a plurality of light sources and receives the driving voltage through input terminals of the light source strings to generate a light. The error detector is connected to output terminals of the light source strings and senses voltages between the input terminals and the output terminals of the light source strings to detect an error in the light sources using a first voltage and a second voltage. The first voltage is a voltage difference between a maximum and a minimum of the sensed voltages and the second voltage is obtained by dividing one sensed voltage of the sensed voltages by a number of the light sources of a light source string from which the one sensed voltage is sensed.

Backlight unit, driving method thereof, and error detection method thereof

A backlight unit of a liquid crystal display device supplies light to one or more corresponding pixels of a liquid crystal display panel. The backlight unit includes a plurality of blocks formed into a matrix shape. Each block includes a light emitting diode module. The blocks in a row of the matrix are driven by a same row driving signal and the blocks in a column of the matrix are driven by a same column driving signal, to adjust luminance of the light supplied to the corresponding pixels.

Backlight unit, liquid crystal display device including the same, and localized dimming method thereof

A method of driving a light source apparatus includes inverting a direct current voltage to generate a first alternating current voltage, transforming the first alternating current voltage into a second alternating current voltage having a voltage level that is greater than a voltage level of the first alternating current voltage, compensating a driving alternating current voltage based on the second alternating current voltage to generate a compensated driving alternating current voltage such that a substantially equal current flows through each light emitting string of a plurality of light emitting string included in the light source apparatus, and rectifying the compensated driving alternating current voltage to apply a driving voltage to the light emitting strings.

Method of driving light source and display apparatus for performing the method

In a compressor, a motor includes a stator and a moving member that reciprocates. A frame supports the stator and a conductivity member flows at least a portion of magnetic flux flowing away from the stator back to the stator. Accordingly, the reciprocating compressor has enhanced energy efficiency.

Reciprocating compressor

A stator fixing apparatus of a reciprocating compressor comprises a first frame on which a plurality of first core blocks, each comprising a plurality of laminated stator core sheets, are radially coupled, the plurality of first core blocks being coupled to one side surface of a bobbin body, and a second frame on which a plurality of second core blocks, each comprising a plurality of laminated stator core sheets, are radially coupled. The plurality of second core blocks are coupled to the other side surface of the bobbin body. A coupling portion is provided at each contact portion between the first core block and the second core block, for coupling the first and second core blocks. Thus, deformation of an initial shape of the stator or increase of a defect rate due to a molding material can be prevented, and heat and moisture can easily be discharged, so as to improve the efficiency and reliability of the reciprocating compressor.

Stator fixing apparatus of reciprocating compressor

Growing community of inventors

Seoul, South Korea

Won-Sik Oh