Samsung Display Co., Ltd.

Samsung Electronics Co., Ltd.

Po-Yun Park

Jung Hwan Cho

Min Joo Lee

Kwan-Young Oh

Yong-Jun Choi

Jae-won Jeong

Jung-Hwan Cho

Dong-Won Park

Jae Wan Park

Yun-Jae Kim

Seung Hwan Moon

Jin-Soo Kim

Bonghyun You

Sang Su Han

Kyung-Uk Choi

Myeong-Su Kim

Chang-Soo Lee

Sang-Soo Kim

Seung-Hwan Moon

Bong-Hyun You

Bo-Ra Kim

Nam-Soo Kang

Kang-Hyun Kim

Yong-Soon Lee

Jae Won Jeong

Sang-Ho Park

Jae-Hyoung Park

Whee-Won Lee

Byung-Kil Jeon

Jin Soo Kim

Yong-Bum Kim

Ji-Woong Jeong

Dong-Hyun Yeo

Woo-jin Jung

Myeong Su Kim

Jae-Wan Park

Hong-Kyu Kim

Jae-Suk Choi

Youn Jin Jung

Young-Su Han

Jimyoung Seo

Ga-Na Kim

Joo Seok Yeom

Gwangsoo Ahn

Yeon-Sung Kim

Seungjae Kang

Hyun Seok Ko

Seung Jae Kang

Il Hyun Yang

Youn-Jin Jung

Gwang-Soo Ahn

Seung-Ho Baek

Haeng-Won Park

Man-Bok Cheon

Hee-Jin Choi

Ji-Myoung Seo

Dong-Gyun Ra

Dongwon Park

Jang-Hyun Yeo

Byungkil Jeon

Myeongsu Kim

Gyeong-Ub Moon

Jee-Hoon Jeon

Young-Suk Ha

Yoo Jeong Lee

Deok-Hwan Kim

Bongchun Park

Kwan-young Oh

Hak Bum Choi

Hyun Seop Song

Sangmi Kim

Gwang Soo Ahn

Sangyoung Lee

Sanghak Yi

Bong Chun Park

Younjin Jung

Jae-Won Jeong

A display device includes a substrate, pixels on the substrate, pads, and test lines. The pads are between the pixels and an edge of the substrate and include a first pad and a second pad. The test lines include a first test line and a second test line. The first test line includes a first section and a second section. The second section is closer to the edge of the substrate than the first section and is connected through the first section to the first pad. The second test line includes a first segment and a second segment. The second segment is closer to the edge of the substrate than the first segment and is connected through the first segment to the second pad. A minimum distance between the first section and the first segment is larger than a minimum distance between the second section and the second segment.

Display device

A display device includes a display panel including first pads in a first row and second pads in a second row, a driving circuit board, a first connection circuit board including a first output portion on which first output pads bonded to the first pads of the display panel are disposed, a first input portion on which first input pads bonded to the driving circuit board are disposed, and a first protruding portion, and a second connection circuit board including a second output portion which overlap at least a portion of the first output portion and on which second output pads bonded to the second pads of the display panel are disposed, and a second input portion on which second input pads bonded to the driving circuit board are disposed. At least a portion of the first protruding portion is disposed on the second input portion.

Display device including overlapping connection circuit boards

A display device includes a display panel, a first connection film, and a second connection film. The display panel includes first pads and second pads. The first connection film includes a first film, which includes a first region connected to the first pads and having a first width and a second region adjacent to the first region and having a second width different from the first width, and a first driving chip mounted on the first film. The second connection film includes a second film, which includes a third region connected to the second pads and having a third width and a fourth region adjacent to the third region and having a fourth width different from the third width and less than the second width, and a second driving chip mounted on the second film.

A display device includes: a first substrate that includes a plurality of first pads arranged in a first direction and a plurality of second pads arranged in parallel with the plurality of first pads; a second substrate that overlaps the first substrate and includes a second substrate including one edge exposing the plurality of first pads and the plurality of second pads; a first flexible printed circuit board that is electrically connected with the plurality of first pads; a second flexible printed circuit board that overlaps the first flexible printed circuit board and is electrically connected with the plurality of second pads; a protective layer that covers the first flexible printed circuit board and the second flexible printed circuit board from one edge of the second substrate to a width including the plurality of first pads and the plurality of second pads; and a blocking portion disposed on the first substrate at a distance from one edge of the second substrate by a width of the protective layer and contacting the protective layer.

A display device includes a driving controller controlling a data driving circuit and providing a clock signal and a driving voltage in response to an image signal and a control signal received from an external source. The driving controller restores a data enable signal having a display period and a blank period in one frame on the basis of the control signal and sets a voltage level of the driving voltage applied to the gate driving circuit in accordance with a duration of the blank period. During a sequence of frames having a changing frame rate, the driving voltage for each respective frame may be set based on the duration of each respective blank period.

Display device capable of changing frame rate and operating method thereof

In a method of operating a display device supporting a variable frame mode, frame data are received during a constant active period of a frame period including the active period and a variable blank period, the received frame data are written to a frame memory in the active period, the received frame data are outputted to a data driver in the active period to display an image based on the received frame data, a time of the variable blank period is counted, and, when the time of the variable blank period reaches a predetermined threshold blank time, the frame data stored in the frame memory are outputted to the data driver in the variable blank period to display an image based on the frame data stored in the frame memory.

Method of operating a display device supporting a variable frame mode, and the display device

A display panel driving apparatus includes a data driving part, a data driving part and an off voltage controlling part. The data driving part is configured to output a data signal to a data line of a display panel. The gate driving part is configured to output a gate signal to a gate line of the display panel. The off voltage controlling part is configured to receive a first off voltage and a second off voltage applied to the gate driving part to generate the gate signal, measure a leakage current of the gate driving part, and control the first off voltage based on the leakage current. Thus, display quality of a display apparatus including the gate driving part may be improved.

Display panel driving apparatus having an off voltage controlled based on a leakage current, method of driving display panel using the same, and display apparatus having the same

A timing controller resetting circuit including: a resistor connected to an output node from which a reset signal is output and a first voltage source which supplies a first voltage; a capacitor connected to the output node and a second voltage source which supplies a second voltage that is lower than the first voltage; a reference voltage source configured to generate a reference voltage that is lower than the first voltage and higher than the second voltage; a comparator including a first input terminal which receives the first voltage, a second input terminal which receives the reference voltage, and an output terminal which outputs a comparison result signal generated by comparing the first voltage with the reference voltage; and a transistor including a first terminal which is connected to the output node, a second terminal which receives the second voltage, and a gate terminal which receives the comparison result signal.

Timing controller resetting circuit and a display device including the same

A display device includes a display panel including: a plurality of pixels; and a signal controller which generates, on a frame-by-frame basis, a display signal based on an input image signal and a control signal from an outside. The signal controller includes a memory which stores a preset image signal, a receiver which receives the control signal, a clock signal modulator which generates an internal clock signal having a first frequency during a blank period, which is determined based on the control signal in a frame period, and a data processor which reads the preset image signal from the memory in response to the internal clock signal for an image processing.

Display device and driving method of display device

A method of driving a display panel includes compensating first pixel data corresponding to a first pixel of a plurality of pixels in the display panel based on at least one of a first decision, a second decision, or a third decision and generating a first data voltage corresponding to the compensated first pixel data. The first data voltage is applied to the first pixel through a data line. The first decision includes determining, based on a position of the first pixel, whether compensation for the first pixel data is required. The second decision includes determining, based on previous subpixel data and present subpixel data for the first pixel, whether the compensation for the first pixel data is required. The third decision includes determining whether the first pixel data complies with a compensation avoidance condition.

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

A display panel driving apparatus includes a data driving part, a gate driving part and an off voltage controlling part. The data driving part is configured to output a data signal to a data line of a display panel. The gate driving part is configured to output a gate signal to a gate line of the display panel. The off voltage controlling part is configured to receive a first off voltage and a second off voltage applied to the gate driving part to generate the gate signal, measure a leakage current of the gate driving part, and control the first off voltage based on the leakage current. Thus, display quality of a display apparatus including the gate driving part may be enhanced.

Display panel driving apparatus, method of driving, and display apparatus with first off voltage controlled based on leakage current

A method of driving a display apparatus includes determining a duration of a blank interval between a first frame and a second frame, wherein the second frame is subsequent to the first frame, and modulating a common voltage during the blank interval when the duration is longer than a first reference time, wherein an average of the common voltage is fixed during the blank interval.

Method of driving a display apparatus, a display apparatus performing the same and a timing controller included in the display apparatus

A display panel driving apparatus includes an over-driving part, where the over-driving part is configured to receive first image data, and to output second image data using first over-driving data and second over-driving data, the first over-driving data is generated according to previous frame data and present frame data for a minimum blank period between the previous frame data and the present frame data of the first image data, the second over-driving data is generated according to the previous frame data and the present frame data for a maximum blank period between the previous frame data and the present frame data of the first image data, and a high display quality of a display apparatus may be achieved.

Display panel driving apparatus and method with over-driving of first and second image data

A liquid crystal display device includes a liquid crystal panel which includes gate lines, data lines crossing the gate lines, and pixels connected to the gate lines and the data lines; a timing controller for receiving a control signal and image data and for generating a gate control signal and a data control signal; a gate driver for generating a gate signal based on the gate control signal and outputting the gate signal to the gate lines; and a data driver for performing data conversion on the image data based on the data control signal and outputting a conversion result to the data lines, wherein the timing controller analyzes the image data frame by frame data and applies two or more inversion driving techniques to frame data.

Liquid crystal display apparatus using inversion driving and driving method thereof

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Seoul, South Korea

Po-Yun Park