Samsung Electronics Co., Ltd.

Yongil Kwon

Sunkwon Kim

Sugyeung Kang

Uijong Song

Yilho Lee

Hyunsang Park

Kangjoo Kim

Yongsik Kwak

Hyunwook Lim

Jung-Pil Lim

Sewoong Ahn

Taehyeon Kwon

Tae-Hyeon Kwon

Alankyongho Kim

Junho Huh

Jinyong Park

Kyungho Ryu

Yoon-Kyung Choi

Changju Lee

Kilhoon Lee

Heejin Lee

Yong-Yun Park

Seongyoung Ryu

Kang Joo Kim

Moonsuk Jeong

Youngkil Choi

Junil Park

Alan Kyongho Kim

Provided is a communication system including a first electronic device and a second electronic device connected with each other through first and second channels. The second electronic device includes a reception driver generating a first internal signal based on a first data signal provided by the first electronic device through the first channel, an error detector generating an error detection signal by determining whether an error is included in the first internal signal, and an error adjuster outputting a first feedback signal through the second channel based on the error detection signal, and the first electronic device outputs a second data signal having a voltage swing width determined based on the first feedback signal through the first channel.

Electronic device and communication system including the same

The present disclosure provides transmitter circuits and display devices including the same. In some embodiments, the transmitter circuit includes a run length detector, a modifier, and a scrambler. The run length detector is configured to derive position information indicating a first input data related to a threshold run length from among a plurality of input data in a predetermined bit unit, when a run length of first scrambled data for the first input data meets or exceeds the threshold run length in the predetermined bit unit. The modifier is configured to generate modified input data by inverting at least one bit of the first input data based on the position information. The scrambler is configured to receive the modified input data from the modifier, and generate second scrambled data by scrambling the modified input data with scrambling information.

Transmitter circuit and display device including the same

A display device includes pixels arranged in rows and columns, a scan driver, and a read-out circuit, wherein the read-out circuit is configured to read-out electrical properties of a pixel through the read-out line. The first pixel includes a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor, a seventh transistor, an eighth transistor, a ninth transistor, a first organic light-emitting diode connected between a second electrode of the seventh transistor and a ground node to which a ground voltage is applied, a second organic light-emitting diode between the second electrode of the eighth transistor and the ground node, and a third organic light-emitting diode connected between the second electrode of the ninth transistor and the ground node.

Display device

In a backlight apparatus, a master driving circuit generates a transmission frame including a training period including a clock training pattern and a data period including a plurality of data packets respectively corresponding to the plurality of blocks. A plurality of slave driving circuits correspond to the plurality of blocks, respectively, and are connected to the master driving circuit in a daisy chain structure. Each slave driving circuit receives the transmission frame through the daisy chain structure, recovers a clock based on the clock training pattern, and drives the plurality of light emitting elements included in a corresponding block among the plurality of blocks based on its own data packet among a plurality of data packets.

Backlight apparatus and operating method thereof

The present disclosure provides methods and apparatuses for correcting skew. In some embodiments, a skew correcting device includes a plurality of samplers configured to sample first data based on a plurality of data clock signals with different phases, and a plurality of edge selectors configured to determine to switch at least one data clock signal of the plurality of data clock signals to an edge clock signal according to a sampling result of the plurality of samplers.

Semiconductor device and operating method thereof

A device includes a pixel array, a row driver configured to, generate a plurality of control signals, drive a plurality of rows of the pixel array using the plurality of control signals, and generate a plurality of clock signals, a row multiplexer configured to receive the plurality of clock signals, and transmit one clock signal of the plurality of clock signals, a data driver configured to transmit a plurality of data signals to the pixel array by column units, each pixel of the plurality of pixels includes, a light emitting device, a shift register configured to receive the selectively transmitted clock signal from the row multiplexer, and generate a width adjusted pulse width modulation (PWM) signal based on a desired brightness level of the light emitting device, and a transistor configured to transmit a driving current to the light emitting device based on the PWM signal.

Small size pixel and display device including the same

Disclosed is integrated circuit panel which detects fault of a driving circuit. The integrated circuit panel includes: a driving circuit array including first and second driving circuits; a data driver configured to output first and second input data signals through first and second data lines, respectively; a switch driver configured to output a switching signal through a switch line; and an error detection driver configured to receive first and second output data signals through first and second test lines, respectively, wherein, in response to the switching signal, the first and second driving circuits are configured to output the first and second output data signals, which are based on the first and second input data signal, through the first and second test lines, respectively, and the error detection driver is configured to detect a fault of the first or second driving circuit based on the first or second output data signal.

Fault detection display apparatus and operation method thereof

A backlight system includes a backlight and a master driving circuit. The backlight includes a plurality of slave driving circuits and a plurality of light sources driven by the plurality of slave driving circuits, wherein the plurality of slave driving circuits are arranged in a matrix of driving rows and driving columns such that first through m-th slave driving circuits, where m is a positive integer greater than one, are arranged in each driving row of the driving rows, and the first through m-th slave driving circuits are connected in a daisy chain structure. The master driving circuit is configured to generate a plurality of input data signals, wherein each input data signal of the plurality of input data signals corresponds to the each driving row, and the each input data signal includes first through m-th packets including luminance data corresponding to the first through m-th slave driving circuits.

Backlight system, display device including the backlight system and method of transferring data in the backlight system

A display device includes: a cell matrix including a first cell line and a second cell line, wherein the first cell line includes first cells sharing first row lines, and the second cell line includes second cells sharing second row lines; a redundancy integrated circuit including a redundancy cell line including redundancy cells, wherein the redundancy cells share a third row line and are connected to the first and second cells through a plurality of column lines and a plurality of connection lines; and a display driver integrated circuit (DDI) configured to replace the first cell line or the second cell line with the redundancy cell line through the first row lines, the second row lines, and the third row line based on whether the first and second cell lines include a bad cell.

Display device including cell matrix including redundancy cell

A light-emitting diode (LED) driving circuit for driving an LED channel including a plurality of LED elements includes a switch-capacitor amplifier circuit configured to sample received input current and amplify an input voltage corresponding to the input current, a replica circuit configured to connect to the switch-capacitor amplifier circuit in a first period to define a first feedback loop, and an output circuit configured to connect to the switch-capacitor amplifier in a second period to define a second feedback loop. The second period is after the first period, and the output circuit is configured to generate output current according to an output voltage of the switch-capacitor amplifier circuit and provide the output current to the LED.

Light emitting diode (LED) driver for backlight improving accuracy of output current and increasing uniformity of brightness between LED channels

A backlight device includes LED elements divided into dimming groups; a panel driver configured to output a reference current for driving the LED elements; and pixel circuits, each of which is connected to the panel driver through a common line and is respectively configured to drive first LED elements comprised in a corresponding dimming group. Each of the pixel circuits is configured to: in a first period of a frame period, obtain a reference voltage based on the reference current and store the reference voltage, in a second period of the frame period, obtain luminance data of an image displayed by the corresponding dimming group, and in a third period of the frame period, drive the first LED elements during a light emitting time corresponding to the luminance data obtained in the second period using the reference voltage stored in the first period.

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Suwon-si, South Korea

Yongil Kwon