Transistor Patents (Class 349/42)
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Patent number: 8817201Abstract: An array substrate comprises data lines, gate lines, thin film transistors and pixel electrodes formed on a base substrate. Pixel units are defined by intersecting the data lines and the gate lines, the thin film transistors are formed at the intersections of the data lines and the gate lines, and the data lines extend across each of the pixel units in the middle of the pixel units. At least two thin film transistors for controlling a same pixel electrode are respectively formed on both sides of the data line in each pixel unit.Type: GrantFiled: June 18, 2012Date of Patent: August 26, 2014Assignee: Beijing Boe Optoelectronics Technology Co., Ltd.Inventors: Meihua Hong, Ziqi Xia, Zhinan Zhang
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Publication number: 20140232962Abstract: According to one embodiment, a display device includes a first substrate including a first resin substrate having a first thermal expansion coefficient, and a first barrier layer having a second thermal expansion coefficient which is lower than the first thermal expansion coefficient, a second substrate including a second resin substrate having a third thermal expansion coefficient which is equal to the first thermal expansion coefficient, and a second barrier layer having a fourth thermal expansion coefficient which is lower than the third thermal expansion coefficient and is equal to the first thermal expansion coefficient, and a display element located between the first resin substrate and the second resin substrate.Type: ApplicationFiled: January 27, 2014Publication date: August 21, 2014Applicant: Japan Display Inc.Inventors: Arichika ISHIDA, Yasushi Kawata
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Publication number: 20140232963Abstract: A liquid crystal display, includes: a substrate; a gate line including a gate pad and a data line including a data pad, the gate and data lines being disposed on the substrate; a thin film transistor connected to the gate line and the data line; an organic layer disposed on the thin film transistor; a pixel electrode disposed on the organic layer; a first contact assistant disposed on the gate pad; a second contact assistant disposed on the data pad; a first insulating layer disposed on the pixel electrode; and a common electrode disposed on the first insulating layer, the common electrode overlapping with the pixel electrode. The common electrode includes first cutouts, the first insulating layer includes second cutouts, the plane shapes of the first and second cutouts are substantially the same, and the pixel electrode includes a polycrystalline transparent conductive material.Type: ApplicationFiled: February 11, 2014Publication date: August 21, 2014Applicant: Samsung Display Co., Ltd.Inventors: Hwa Yeul OH, Sung Man KIM, Young Je CHO, Min-Chul SONG, Eu Gene LEE, Soo Jung CHAE, Hyun Ki HWANG
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Publication number: 20140232964Abstract: An integrated gate driver circuit includes a control circuit, a plurality of drive stages and a plurality of discharge transistors. The control circuit is configured to output a plurality of clock signals within a frame period and to output a discharge enabling signal within a blanking period of the frame period. Each of the drive stages receives the clock signals and includes an output terminal configured to output a gate driving signal. Each of the discharge transistors is coupled to the output terminal of one of the drive stages and discharges the output terminal according to the discharge enabling signal thereby eliminating the voltage fluctuation of the output terminal in the blanking period.Type: ApplicationFiled: February 27, 2014Publication date: August 21, 2014Applicant: HANNSTAR DISPLAY CORP.Inventors: Chun-Chin TSENG, Ya-Wen LEE, Kuo-Wen PAN, Chien-Ting CHAN
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Patent number: 8803855Abstract: A liquid crystal display includes a plurality of pixels. Each pixel of the plurality of pixels includes a gate line which receives a gate signal; a data line which receives a data voltage; a first sub-pixel including a first transistor connected to the gate line and the data line, wherein the first transistor outputs the data voltage in response to the gate signal; and a first liquid crystal capacitor connected to the first transistor. Each pixel further includes a second sub-pixel including a second transistor connected to the gate line and the data line, wherein the second transistor outputs the data voltage in response to the gate signal; and a second liquid crystal capacitor connected to the second transistor; a resistor connected to the second transistor; and a first sharing capacitor connected to the resistor, wherein the first sharing capacitor receives the data voltage through the resistor.Type: GrantFiled: September 13, 2010Date of Patent: August 12, 2014Assignee: Samsung Display Co., Ltd.Inventors: Joon-Chul Goh, Young-Soo Yoon, Soo-Wan Yoon, Chongchul Chai
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Patent number: 8801965Abstract: The present invention provides a liquid crystal medium composition and a liquid crystal display panel manufactured with same. The liquid crystal medium composition includes a negative type liquid crystal material, a polymerizable monomer, a sensitizer, and stabilizer. The sensitizer is an organometallic complex that has an amount of 0.01%-5% of total mass of the liquid crystal composition and has a strong absorption of ultraviolet light having a wavelength of 300-450 nm. The sensitizer converts the primary wavelength range of ultraviolet light for reaction of the polymerizable monomer from 200-300 nm to 300-450 nm, staying away from the absorption band of the liquid crystal material and reducing damages caused on the liquid crystal material and the alignment material of polyimide, thereby heightening reaction efficiency and homogeneity of the polymerizable monomer and the quality and lifespan of the liquid crystal display panel.Type: GrantFiled: November 14, 2012Date of Patent: August 12, 2014Assignee: Shenzen China Star Optoelectronic Technology co., Ltd.Inventors: Xinhui Zhong, Kuancheng Lee
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Patent number: 8804060Abstract: It is an object of the present invention to provide a method for preventing a breaking and poor contact, without increasing the number of steps, thereby forming an integrated circuit with high driving performance and reliability. The present invention applies a photo mask or a reticle each of which is provided with a diffraction grating pattern or with an auxiliary pattern formed of a semi-translucent film having a light intensity reducing function to a photolithography step for forming wires in an overlapping portion of wires. And a conductive film to serve as a lower wire of a two-layer structure is formed, and then, a resist pattern is formed so that a first layer of the lower wire and a second layer narrower than the first layer are formed for relieving a steep step.Type: GrantFiled: September 14, 2009Date of Patent: August 12, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Masayuki Sakakura, Hideto Ohnuma, Hideaki Kuwabara
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Publication number: 20140218347Abstract: In a liquid crystal display one pixel is divided into two subpixels, the two subpixels are connected to two subdata lines extending from one data line, and a desired data voltage is applied by using a data driving switching element connected to the subdata line, thereby reducing the number of data lines needed to reduce the cost of the driver and preventing a lack of space to mount the data driver while dividing one pixel into two subpixels and differently applying voltages of the two subpixels.Type: ApplicationFiled: January 29, 2014Publication date: August 7, 2014Applicant: SAMSUNG DISPLAY CO., LTD.Inventors: CHEOL-GON LEE, Chong Chul Chai, Joon-Chul Goh, Yeong-Keun Kwon, Jong Hee Kim
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Patent number: 8796785Abstract: To suppress variation of a signal in a semiconductor device. By suppressing the variation, formation of a stripe pattern in displaying an image on a semiconductor device can be suppressed, for example. A distance between two adjacent signal lines which go into a floating state in different periods (G1) is longer than a distance between two adjacent signal lines which go into a floating state in the same period (G0, G2). Consequently, variation in potential of a signal line due to capacitive coupling can be suppressed. For example, in the case where the signal line is a source signal line in an active matrix display device, formation of a stripe pattern in a displayed image can be suppressed.Type: GrantFiled: January 12, 2011Date of Patent: August 5, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventor: Hideaki Shishido
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Publication number: 20140204301Abstract: An electrooptic device includes: a first substrate member; an TFT disposed on the first substrate member; a capacitor element which is connected with the TFT and in which an insulation film is sandwiched between a pair of electrodes; a first electric wire electrically connected with one of the pair of electrodes; a second electric wire electrically connected with the other one of the pair of electrodes; a contact hole electrically connected with the first electric wire; and another contact hole electrically connected with the second electric wire. Further, the above two contact holes are provided in an insulation layer that is disposed on the first and second electric wires.Type: ApplicationFiled: January 17, 2014Publication date: July 24, 2014Applicant: Seiko Epson CorporationInventor: Masashi Nakagawa
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Patent number: 8786794Abstract: It is an object of the present invention to connect a wiring, an electrode, or the like formed with two incompatible films (an ITO film and an aluminum film) without increasing the cross-sectional area of the wiring and to achieve lower power consumption even when the screen size becomes larger. The present invention provides a two-layer structure including an upper layer and a lower layer having a larger width than the upper layer. A first conductive layer is formed with Ti or Mo, and a second conductive layer is formed with aluminum (pure aluminum) having low electric resistance over the first conductive layer. A part of the lower layer projected from the end section of the upper layer is bonded with ITO.Type: GrantFiled: August 15, 2013Date of Patent: July 22, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Yoshinari Higaki, Masayuki Sakakura, Shunpei Yamazaki
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Patent number: 8785257Abstract: Disclosed is array substrate including a pixel region having a switching region, a driving region and a storage region. A switching TFT in the switching region includes a first gate electrode, a first gate insulating layer, a switching active layer on the first gate insulating layer, a switching source electrode on a first switching ohmic contact layer, and a switching drain electrode on a second switching ohmic contact layer; a driving TFT in the driving region is connected to the switching TFT and includes a first gate electrode, a second gate insulating layer, a driving active layer on the second gate insulating layer, a driving source electrode on a first driving ohmic contact layer, and a driving drain electrode on a second driving ohmic contact layer; wherein at least one of the switching and driving TFTs further includes a second gate electrode over the switching or driving active layers.Type: GrantFiled: July 2, 2010Date of Patent: July 22, 2014Assignee: LG Display Co., Ltd.Inventors: Hee-Dong Choi, Hye-Young Choi, Doo-Seok Yang
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Publication number: 20140198276Abstract: An insulating film is arranged between a gate line and a gate shield electrode. A concave portion which extends in a first direction along with the edges of the gate line is formed in the insulating film. The concave portion in a slit shape is formed along with the edges of both sides of the gate line, respectively. The gate shield electrode extends to the concave portion.Type: ApplicationFiled: December 23, 2013Publication date: July 17, 2014Applicant: Japan Display Inc.Inventors: Masato KESHO, Kazuhiro TAKAHASHI
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Patent number: 8772074Abstract: Provided are an organic light emitting display device and a method for manufacturing the same. The organic light emitting display device comprises a transistor on a substrate, a cathode on the transistor and connected to a source or a drain of the transistor, a bank layer on the cathode and having an opening, a metal buffer layer on the cathode, an organic light emitting layer on the metal buffer layer, and an anode on the organic light emitting layer.Type: GrantFiled: August 12, 2009Date of Patent: July 8, 2014Assignee: LG Display Co., Ltd.Inventors: Jaehee Park, Heeseok Yang, Howon Choi
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Patent number: 8773338Abstract: In an image signal writing period, a first image signal is supplied to a first liquid crystal element and a first capacitor from a first signal line. In a backlight lighting period, display is performed in a light-transmitting pixel portion in response to the first image signal. In a black grayscale signal writing period, a signal for black display is supplied to a second liquid crystal element and a second capacitor from a second signal line. In a still image signal writing period, a second image signal is supplied to the first liquid crystal element, the first capacitor, the second liquid crystal element, and the second capacitor from the first signal line. In a still image signal holding period, display is performed in the reflective pixel portion in response to the second image signal.Type: GrantFiled: January 13, 2011Date of Patent: July 8, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventor: Hiroyuki Miyake
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Publication number: 20140184968Abstract: Provided is a novel liquid crystal display device without deterioration of display quality. The liquid crystal display device includes a pixel for displaying a still image with a frame frequency of 1 Hz or lower. The pixel includes a liquid crystal element which includes a liquid crystal layer and has a cell gap of d (?m). The liquid crystal layer includes a liquid crystal composition which includes a liquid crystal material. The helical pitch of the liquid crystal material is longer than or equal to 4d ?m and shorter than or equal to 8d ?m. With this structure, a change in voltage applied to a pixel can be kept within an acceptable range of a deviation in gray level for displaying the same image. Thus, flickers due to a low refresh rate can be reduced, which leads to an increase in display quality.Type: ApplicationFiled: December 19, 2013Publication date: July 3, 2014Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventors: Yasuhiro NIIKURA, Momoko KATO, Daisuke KUBOTA, Makoto IKENAGA
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Patent number: 8767136Abstract: In a display device, a liquid crystal capacitive element is sandwiched between a pixel electrode and an opposite electrode. The pixel electrode, one end of a first switch circuit, one end of a second switch circuit and a first terminal of a second transistor form an internal node. The other terminals of the first switch circuit and the second switch circuit are connected to a source line. The second switch circuit is a series circuit composed of a first transistor and a diode. A control terminal of the first transistor, a second terminal of the second transistor and one end of a boost capacitive element form an output node. The other end of the boost capacitive element and the control terminal of the second transistor are connected to a boost line and a reference line, respectively.Type: GrantFiled: August 29, 2011Date of Patent: July 1, 2014Assignee: Sharp Kabushiki KaishaInventors: Naoki Ueda, Yoshimitsu Yamauchi
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Publication number: 20140176842Abstract: Techniques are provided for unifying steps of sealing material so that the yield and the reliability of a liquid-crystal display device become high. A starting film of scanning lines is patterned so that prismatic dummy wirings 301 for the first layer which are not electrically connected are formed in regions R1 and R2, and wirings 302 extending from the pixel section are formed in a region R3, and wirings 303 having connection end portions 303a are formed in a region R4. After an interlayer insulation film is formed, the starting film of the signal lines is patterned so that the dummy wirings 304 for the second layer are formed to embed the gaps between the wirings 301 to 303, and also the wirings 305 and the wirings 303 which extend from the pixel portion are connected to each other. This permits unification of the cross-sectional structure of the sealing material formation region.Type: ApplicationFiled: February 27, 2014Publication date: June 26, 2014Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventor: Hongyong ZHANG
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Publication number: 20140168560Abstract: A liquid crystal display device according to the present invention includes a plurality of storage capacitor lines and a storage capacitor drive circuit. The storage capacitor lines are connected to the respective storage capacitors. The storage capacitor drive circuit generates storage capacitor signals CSs1, CSs2 applied to the storage capacitors via the storage capacitor lines. Waveforms of the storage capacitor signals CSs1 and CSs2 in a vertical blanking interval K2 of image display is pulse waveforms. Each waveform includes an upper waveform region in which a signal level is higher than a mean voltage Vcom and a lower waveform region in which the signal level is lower than the mean voltage Vcom.Type: ApplicationFiled: July 9, 2012Publication date: June 19, 2014Applicant: SHARP KABUSHIKI KAISHAInventor: Ryo Yamakawa
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Publication number: 20140160385Abstract: This invention provides a semiconductor device having high operation performance and high reliability. An LDD region 707 overlapping with a gate wiring is arranged in an n-channel TFT 802 forming a driving circuit, and a TFT structure highly resistant to hot carrier injection is achieved. LDD regions 717, 718, 719 and 720 not overlapping with a gate wiring are arranged in an n-channel TFT 804 forming a pixel unit. As a result, a TFT structure having a small OFF current value is achieved. In this instance, an element belonging to the Group 15 of the Periodic Table exists in a higher concentration in the LDD region 707 than in the LDD regions 717, 718, 719 and 720.Type: ApplicationFiled: November 4, 2013Publication date: June 12, 2014Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shunpei YAMAZAKI, Satoshi MURAKAMI, Jun KOYAMA, Yukio TANAKA, Hidehito KITAKADO, Hideto OHNUMA
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Publication number: 20140160386Abstract: A liquid crystal element achieving both optical control utilizing a memory property and optical control capable of supporting moving image displays is disclosed. The first substrate and the second substrate of the element are set in an orientation process direction that ensures generation of a first orientation state, and a chiral material that generates a second orientation state is included in the liquid crystal layer. The layer transitions from the second orientation state to the first orientation state when an electric field of a layer thickness direction is applied. The layer transitions from the first orientation state to the second orientation state when an electric field of a direction perpendicular to the layer thickness direction is applied. And the layer returns to the second orientation state when an orientation change is generated according to the strength of the electric field when an electric field of the perpendicular direction is applied.Type: ApplicationFiled: December 2, 2013Publication date: June 12, 2014Applicant: Stanley Electric Co., Ltd.Inventor: Yasuo TOKO
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Patent number: 8749262Abstract: A display device and a method of testing the display device. The display device includes a substrate including both a display region on which pixel cells are located and a peripheral region; test pads, main pins connected to the pixel cells, and dummy pins that are respectively connected to the test pads, the test pads, the main pins, and the dummy pins being on the peripheral region of the substrate, and visual test lines on the peripheral region of the substrate. The visual test lines include a first portion connected to the main pins and a second portion connected to the test pads, and the first and second portions are disconnected from each other.Type: GrantFiled: July 29, 2011Date of Patent: June 10, 2014Assignee: Samsung Display Co., Ltd.Inventors: Myung-Sook Jung, SungMin Kim, Jeonggeun Yoo
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Patent number: 8749724Abstract: The present invention discloses an LCD panel. The LCD panel includes a plurality of data lines, a plurality of scan lines insulatingly intersecting the data lines, and a plurality of pixel units defined by the scan lines and corresponding data lines. Any two adjacent pixel units in a same row are respectively coupled to two corresponding scan lines. Any two adjacent pixel units in a same column are respectively coupled to two corresponding data lines. In this present invention, the pixel units coupled to a same data line are respectively coupled to different scan lines so as to reduce the power consumption of the LCD panel.Type: GrantFiled: August 21, 2011Date of Patent: June 10, 2014Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventor: Xiu-feng Zhou
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Publication number: 20140152931Abstract: A liquid crystal display device and a liquid crystal display panel based on three-dimensional transistor thereof are provided. The liquid crystal display panel includes an array substrate, a printed circuit board, a first chip on film with an integrated circuit, and At least one connector connected between the array substrate and the printed circuit board. The first chip on film is attached between the array substrate and the printed circuit board. The array substrate and the printed circuit board can be supported by the connectors effectively. The connectors share gravity of the printed circuit board with the first chip on film attached between the array substrate and the printed circuit board. Therefore, the present disclosure can avoid damage to lines of the first chip on film and improve the yield rate of the quality of the liquid crystal display panel based on three-dimensional transistor.Type: ApplicationFiled: December 14, 2012Publication date: June 5, 2014Applicant: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Quan Li
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Publication number: 20140152933Abstract: An improved Liquid Crystal Display (LCD) heating system is provided. Resistor meshes, in particular VCOM resistor heating meshes, in the pixel array improve capacity of the display heater (heating system) so that the display is heated faster from low temperatures. The resistor mesh design provides much lower resistance from one point in the pixel array to an edge than pixel-to-pixel horizontal VCOM resistance, thus reducing horizontal crosstalk. Further, the approach permits the display to be active during the warm-up process.Type: ApplicationFiled: November 14, 2013Publication date: June 5, 2014Applicant: Kopin CorporationInventors: Chompoonoot Anupongongarch, Frederick P. Herrmann, Wen-Foo Chern
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Publication number: 20140152930Abstract: The present invention provides a pixel structure that increases response speed of liquid crystal, which includes a first thin-film transistor, a second thin-film transistor, an upper substrate, a lower substrate opposite to the upper substrate, pixel electrodes arranged on the lower substrate, a common electrode arranged on the upper substrate, and assisting electrodes arranged on the lower substrate. The assisting electrodes are arranged to be each sandwiched between every two pixel electrodes. The first thin-film transistor includes a first drain terminal, a first source terminal, and a first gate terminal. The second thin-film transistor includes a second drain terminal, a second source terminal, and a second gate terminal. The pixel electrodes are electrically connected to the second drain terminal. The assisting electrodes are electrically connected to the first drain terminal.Type: ApplicationFiled: August 23, 2012Publication date: June 5, 2014Applicant: Shenzhen China Star Optoelectronics Technology Co. Ltd.Inventors: Chiachiang Lin, Hunglung Hou
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Publication number: 20140152932Abstract: A liquid crystal display device preventing flicker. The liquid crystal display device includes a plurality of pixels each having a transistor, a liquid crystal element to which a first signal and a second signal having opposite polarities are alternately applied through the transistor, and a capacitor including a first electrode and a second electrode. The liquid crystal element includes a pixel electrode and a common electrode partly overlapping with each other with an insulating film interposed therebetween, and a liquid crystal layer over the pixel electrode and the common electrode. The first electrode of the capacitor is electrically connected to the pixel electrode. The potential of the second electrode changes between a first potential and a second potential having different levels after the first signal is applied until the second signal is applied, whereby a change in the voltage applied to the liquid crystal layer is reduced.Type: ApplicationFiled: November 14, 2013Publication date: June 5, 2014Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventor: Hiroyuki MIYAKE
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Patent number: 8743333Abstract: The present invention provides a liquid crystal display device having gate wires and source/drain wires with a multilayer structure made of the same material which can be manufactured at low cost, as well as a manufacturing method for the same. In accordance with the manufacturing method, a wet etching process is carried out on the gate wires and the source/drain wires using an etchant including hydrofluoric acid and an oxidant, and the concentration of hydrofluoric acid in the etchant is different between the etchant for the gate wires and that for the source/drain wires.Type: GrantFiled: January 20, 2011Date of Patent: June 3, 2014Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Daisuke Sonoda, Toshiki Kaneko, Hideo Tanabe
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Publication number: 20140146258Abstract: The drain lines are such that one drain line is formed for every two pixels adjacent to each other within the same pixel row, the gate lines are formed of a first gate line connected to one of the two pixels connected to the same drain line within the same pixel row and a second gate line connected to the other pixel, the pixel electrode is formed of a first linear electrode inclined in a plus direction from the first direction, and a second linear electrode inclined in a minus direction from the first direction, in a region in which the pixel electrode is superimposed over the common electrode, and each pixel has the first and second gate lines and thin film transistor formed in a region between the region of the first linear electrode and the region of the second linear electrode.Type: ApplicationFiled: January 31, 2014Publication date: May 29, 2014Applicants: Panasonic Liquid Crystal Display Co., Ltd., Japan Display Inc.Inventor: Takao SATO
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Publication number: 20140146257Abstract: An active matrix substrate includes: a display region; a non-display region around the display region; a mounting region of the non-display region; a plurality of first signal lines provided in the non-display region to extend from near the display region to the mounting region, partially spaced at a pitch Pa, partially spaced at a pitch Pb, and partially inclined at an angle ?a; and a plurality of second signal lines provided in the non-display region to extend from near the display region to the mounting region, partially spaced at the Pa, partially spaced at the pitch Pb, partially inclined at the angle ?a, and partially inclined at an angle ?b. The pitch Pd between each adjacent pair of a plurality of second connectors of the second signal lines is greater than the pitch Pc between each adjacent pair of a plurality of first connectors of the first connectors.Type: ApplicationFiled: July 13, 2012Publication date: May 29, 2014Applicant: SHARP KABUSHIKI KAISHAInventor: Yohsuke Fujikawa
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Publication number: 20140146255Abstract: An array substrate comprises: a substrate; and a plurality of gate lines (101) and a plurality of data lines (102), which are formed on the substrate. Two adjacent gate lines (101) and two adjacent data lines (102) intersect with each other to form a pixel region. Each pixel region comprises two pixel electrodes (103) and two thin-film transistors (TFTs). The drain electrodes of two thin-film transistors (TFTs) are respectively connected to two pixel electrodes (103), the source electrodes of two thin-film transistors (TFTs) are respectively connected to two data lines, and the gate electrodes of two thin-film transistors (TFTs) are connected to one of two gate lines.Type: ApplicationFiled: November 12, 2012Publication date: May 29, 2014Applicant: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Chang Xie, Jaegeon You
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Patent number: 8735891Abstract: A display substrate includes first, second, and third insulating layers in a display area thereof. The first and third insulating layers are in not only the display area but also a pad area adjacent to the display area and including a pad therein. Thus, defects of the display panel may be reduced.Type: GrantFiled: December 22, 2011Date of Patent: May 27, 2014Assignee: Samsung Display Co., Ltd.Inventors: JeongMin Park, Jung-Soo Lee, Ji-Hyun Kim, Gwui-Hyun Park
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Publication number: 20140139769Abstract: A liquid crystal display device includes a TFT substrate having a display region where pixels each having a TFT and a pixel electrode are formed in a matrix, a counter substrate having a display region where color filters of three colors are formed in a matrix, the TFT substrate and the counter substrate being bonded together with a sealing material in a seal portion at a periphery, and liquid crystal sealed between the TFT substrate and the counter substrate by the seal material. In the display region, a first insulation film, a first alignment film, a first columnar spacer, an overcoat film, a first color filter among the color filters of three colors are stacked in this order between the TFT substrate and the counter substrate.Type: ApplicationFiled: January 28, 2014Publication date: May 22, 2014Applicants: Panasonic Liquid Crystal Display Co., Ltd., Japan Display Inc.Inventors: Takashi Yamamoto, Tomoya Sugano, Takamitsu Kamada
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Patent number: 8730422Abstract: A liquid crystal display uses a layout which reduces the number of data lines relative to the number of pixel columns by providing one data line for every two pixel columns. The display is structured to prevent a passivation layer from becoming opaque due to a manufacturing haze effect by forming the pixel electrode below a gate insulating layer. It is structured to prevent a drain electrode from being damaged due to an etchant used for patterning the pixel electrode. Further, it is structured to prevent a short circuit between a common voltage line and a gate line while not substantially reducing an aperture ratio by disposing a common voltage contact hole for electrically connecting the common voltage line with a common electrode between vertically extending portions of two gate lines that generally extend horizontally.Type: GrantFiled: September 13, 2012Date of Patent: May 20, 2014Assignee: Samsung Display Co., Ltd.Inventors: Gyung-Soon Park, Il Gon Kim, Seon Young Choi, Sung Hoon Kim
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Publication number: 20140132644Abstract: Active matrix liquid crystal displays, mainly applicable to screens with small dimensions, fabricated for example starting from silicon substrates, are especially applicable to display operation in color sequential mode. The pixel comprises a pixel electrode controlled by a control transistor and counter-electrodes situated on the same side of the liquid crystal as the pixel electrode and parallel to the pixel electrode; the liquid crystal is composed of molecules having a natural rest orientation in the absence of a voltage between the pixel electrode and the counter-electrodes and a different orientation in the presence of an electric field created between the pixel electrode and the counter-electrodes. Erase electrodes are situated on either side of the pixel in a transverse direction with respect to the counter-electrodes and are designed to produce, during an erase phase, an erase electric field tending to return the molecules of the liquid crystal to their rest orientation.Type: ApplicationFiled: March 11, 2012Publication date: May 15, 2014Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventor: Umberto Rossini
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Publication number: 20140132868Abstract: An optically isotropic liquid crystal composition is described. The liquid crystal composition contains an achiral component T and a chiral agent, contains at least one compound represented by formula (1) as a first component of the achiral component T, and exhibits an optically isotropic liquid crystal phase: wherein, for example, R1 is alkyl having 1 to 20 carbons; L1 to L8 are independently hydrogen or fluorine; Z1 to Z3 are each independently a single bond, —COO— or —CF2O—, but at least one thereof is —COO—; n1 and n2 are each independently 0 or 1; and X1 is halogen.Type: ApplicationFiled: May 22, 2013Publication date: May 15, 2014Applicants: JNC Petrochemical Corporation, JNC CorporationInventors: Koki Sago, Shin-ichi Yamamoto, Takafumi Kuninobu, Yasuhiro Haseba
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Publication number: 20140132866Abstract: The present disclosure provides a liquid crystal panel, a manufacturing method thereof and a manufacturing method of a CF substrate. The manufacturing method of the liquid crystal panel includes: manufacturing a CF substrate and a TFT substrate with voltage-applying terminals, forming through holes at positions of the CF substrate corresponding to the voltage-applying terminals of the TFT substrate, and bonding the TFT substrate and the CF substrate. With the through holes formed in the CF substrate and corresponding to the voltage-applying terminals of the TFT substrate, the voltage-applying terminals can be revealed without cutting the CF substrate after the CF substrate and the TFT substrate are bonded together, which avoids reprocess due to cutting abnormality and further improves the yield rate of the liquid crystal panel.Type: ApplicationFiled: November 20, 2012Publication date: May 15, 2014Inventor: Haijian Zhang
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Publication number: 20140132867Abstract: A liquid crystal display includes: a substrate; a thin film transistor on the substrate; a pixel electrode connected with a terminal of the thin film transistor; a microcavity on the pixel electrode, and including a plurality of regions corresponding a pixel area; a liquid crystal layer in the microcavity; a liquid crystal injection hole exposing the microcavity; a common electrode on the microcavity; a supporting member on the common electrode; and a capping layer on the supporting member and covering the liquid crystal injection hole. The pixel electrode is connected with the terminal of the thin film transistor through a contact hole, and the contact hole is within the pixel area.Type: ApplicationFiled: May 9, 2013Publication date: May 15, 2014Applicant: Samsung Display Co., Ltd.Inventors: Se Hyoung CHO, Mee Hye JUNG, Sun Hwa LEE, Kwang-Chul JUNG, Chong Chul CHAI
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Publication number: 20140125900Abstract: An LCD assembly may include an LCD cell, a front cover glass sheet, and a back cover glass sheet. The LCD cell may include a first surface and a second surface. The front cover glass sheet may include a first surface and a second surface. The second surface of the front cover glass sheet may be directly bonded to the first surface of the LCD cell. The front cover glass sheet may be strengthened glass. The back cover glass sheet may include a first surface and a second surface. The first surface of the back cover glass sheet may be directly bonded to the second surface of the LCD cell. The back cover glass sheet may be strengthened glass. The LCD assembly may be transparent to light projected onto the second surface of the back cover glass sheet to enable display of an image.Type: ApplicationFiled: November 7, 2012Publication date: May 8, 2014Inventor: Cheng-Chung Li
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Patent number: 8716715Abstract: A thin film transistor substrate including a thin film transistor having a drain electrode with an electrode portion, which overlaps with a semiconductor layer, and an extended portion, which extends from the electrode portion and has a portion overlapping with a storage electrode or storage electrode line. A passivation layer is arranged on the drain electrode, and it has a contact hole that partially exposes the extended portion of the drain electrode without exposing a step in the extended portion caused by the storage electrode or storage electrode line. A pixel electrode is arranged on the passivation layer and is electrically connected with the extended portion of the drain electrode through the contact hole.Type: GrantFiled: January 7, 2013Date of Patent: May 6, 2014Assignee: Samsung Display Co., Ltd.Inventors: Hyuk-Jin Kim, Kyung-Wook Kim
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Patent number: 8717510Abstract: A liquid crystal display device intended for increasing the ON-current of a TFT in the pixel while suppressing variation of the ON-current, in which a semiconductor layer and a first n+-a-Si layer in the TFT are formed continuously by plasma CVD. The semiconductor layer and the first n+-a-Si layer are patterned simultaneously. Then, a second n+-a-Si layer is formed so as to cover the upper surface of the first n+-a-Si layer and the side portion of the semiconductor layer. The ON-current can be increased and variation of the ON-current of the TFT can be decreased by forming the first n+-a-Si layer continuously over the semiconductor layer.Type: GrantFiled: October 4, 2011Date of Patent: May 6, 2014Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Hidekazu Nitta, Hidekazu Miyake, Takuo Kaitoh
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Patent number: 8703559Abstract: The present invention discloses a thin-film transistor (TFT) array substrate and a manufacturing method thereof. Depositing a transparent conductive layer and a first metal layer in turn on a substrate patterned by a first multi-tone mask (MTM) to form a gate, a common electrode and a reflecting layer; depositing a gate insulation layer and a semiconductor layer patterned by a second MTM to remain the semiconductor layer on the gate; and depositing a second metal layer patterned by a third MTM to form a source and a drain.Type: GrantFiled: May 9, 2012Date of Patent: April 22, 2014Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventors: Hua Huang, Pei Jia
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Publication number: 20140104526Abstract: The embodiment of the present invention discloses a method for detecting the bright point in the liquid crystal display panel. The method comprises applying a cutoff voltage to a gate, remaining a thin film transistor TFT switch turning-off, applying a voltage higher than the voltage of a common electrode to a data line, and detecting a bright point under a black image based on the voltages applied to the gate and the data line. The present invention realizes the bright point detecting under a black image.Type: ApplicationFiled: October 16, 2013Publication date: April 17, 2014Applicant: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Qingzeng SHAN, Hao SUN
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Patent number: 8698151Abstract: An electroluminescent device including a substrate on which a first electrode is formed; a transparent substrate disposed on the first electrode side of the substrate; a color filter disposed between the first electrode and the transparent substrate; an electroluminescent layer disposed between the first electrode and the color filter; and a second electrode disposed between the electroluminescent layer and the color filter.Type: GrantFiled: November 13, 2012Date of Patent: April 15, 2014Assignee: FUJIFILM CorporationInventor: Mitsuru Sawano
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Patent number: 8698200Abstract: Described herein is a liquid crystal (LC) device having Gallium Nitride HEMT electrodes. The Gallium Nitride HEMT electrodes can be grown on a variety of substrates, including but not limited to sapphire, silicon carbide, silicon, fused silica (using a calcium flouride buffer layer), and spinel. Also described is a structure provided from GaN HEMT grown on large area silicon substrates and transferred to another substrate with appropriate properties for OPA devices. Such substrates include, but are not limited to sapphire, silicon carbide, silicon, fused silica (using a calcium fluoride buffer layer), and spinel. The GaN HEMT structure includes an AlN interlayer for improving the mobility of the structure.Type: GrantFiled: August 10, 2012Date of Patent: April 15, 2014Assignee: Raytheon CompanyInventors: Daniel P. Resler, William E. Hoke
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Patent number: 8698970Abstract: An object is to provide a display device with excellent display characteristics, where a pixel circuit and a driver circuit provided over one substrate are formed using transistors which have different structures corresponding to characteristics of the respective circuits. The driver circuit portion includes a driver circuit transistor in which a gate electrode layer, a source electrode layer, and a drain electrode layer are formed using a metal film, and a channel layer is formed using an oxide semiconductor. The pixel portion includes a pixel transistor in which a gate electrode layer, a source electrode layer, and a drain electrode layer are formed using an oxide conductor, and a semiconductor layer is formed using an oxide semiconductor. The pixel transistor is formed using a light-transmitting material, and thus, a display device with higher aperture ratio can be manufactured.Type: GrantFiled: July 11, 2013Date of Patent: April 15, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shunpei Yamazaki, Junichiro Sakata, Masashi Tsubuku, Kengo Akimoto, Miyuki Hosoba, Masayuki Sakakura, Yoshiaki Oikawa
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Publication number: 20140098144Abstract: A display panel includes a first color subpixel, a second color subpixel and a transparent subpixel. The first color subpixel is connected to a first gate line. The second color subpixel is connected to the first gate line. The transparent subpixel is connected to the first gate line and a second gate line adjacent to the first gate line.Type: ApplicationFiled: January 23, 2013Publication date: April 10, 2014Applicant: SAMSUNG DISPLAY CO., LTD.Inventors: Yong-Hwan SHIN, Jin-Seob BYUN, Baek-Kyun JEON
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Publication number: 20140098316Abstract: A PDLC film structure, a manufacturing method and a controlling method thereof are provided. The PDLC film structure comprising: a first substrate and a second substrate disposed facing each other; and a PDLC layer filled between the first substrate and the second substrate. A transparent electrode is provided on a surface of the first substrate which faces the second substrate, and a plurality of control units are provided on a surface of the second substrate which faces the first substrate, each control unit comprising a first thin film field effect transistor and a first transparent electrode connected thereto, and a second thin film field effect transistor and a second transparent electrode connected thereto.Type: ApplicationFiled: October 9, 2013Publication date: April 10, 2014Applicant: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Jaegeon You, Miki Kashima
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Publication number: 20140098315Abstract: A liquid crystal display includes: a first insulation substrate; a gate line disposed on the first insulation substrate; a first data line and a second data line disposed on the first insulation substrate; a color filter disposed on the first insulation substrate and disposed between the first data line and the second data line; a first light blocking member disposed on the first data line and the second data line; and a second light blocking member disposed on the color filter and the first light blocking member, extending in the same direction as the gate line, and overlapping the first light blocking member on the first data line and the second data line.Type: ApplicationFiled: March 15, 2013Publication date: April 10, 2014Applicant: Samsung Display Co., Ltd.Inventors: Hyung Gi JUNG, Swae-Hyun KIM, Yeo Geon YOON, Sung Hee HONG, Hyung June KIM, Jae Hwa PARK, Young Goo SONG, Sung Hoon KIM
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Publication number: 20140098314Abstract: The present invention provides a liquid crystal medium composition and a liquid crystal display panel manufactured with same. The liquid crystal medium composition includes a negative type liquid crystal material, a polymerizable monomer, a sensitizer, and stabilizer. The sensitizer is an organometallic complex that has an amount of 0.01%-5% of total mass of the liquid crystal composition and has a strong absorption of ultraviolet light having a wavelength of 300-450 nm. The sensitizer converts the primary wavelength range of ultraviolet light for reaction of the polymerizable monomer from 200-300 nm to 300-450 nm, staying away from the absorption band of the liquid crystal material and reducing damages caused on the liquid crystal material and the alignment material of polyimide, thereby heightening reaction efficiency and homogeneity of the polymerizable monomer and the quality and lifespan of the liquid crystal display panel.Type: ApplicationFiled: November 14, 2012Publication date: April 10, 2014Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventors: Xinhui Zhong, Kuancheng Lee