Patents Assigned to Display Technologies
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Patent number: 6894742Abstract: A method of fabricating a liquid crystal display device including the steps of forming a liquid crystal layer by filling a liquid crystal composition containing a polymerizable monomer into a gap between a pair of substrates having electrodes; and polymerizing the monomer by radiating ultraviolet light to the liquid crystal composition while applying a prescribed liquid crystal driving voltage between opposing electrodes. The method also includes a step of applying additional ultraviolet radiation to the liquid crystal composition, after polymerizing the monomer, without applying the liquid crystal driving voltage or while applying a voltage of a magnitude that does not substantially drive the liquid crystal.Type: GrantFiled: July 16, 2004Date of Patent: May 17, 2005Assignee: Fujitsu Display Technologies CorporationInventors: Hiroyasu Inoue, Yuji Nakahata, Yoji Taniguchi
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Patent number: 6894741Abstract: When radiating light onto a liquid crystal composition containing a photosensitive material, the alignment of liquid crystal molecules is adjusted by applying a voltage to the liquid crystal composition layer, to achieve substantially orderly alignment of the liquid crystal molecules, or the alignment of the liquid crystal molecules is made uniform by adjusting the structure of the liquid crystal display device, or any display defect is driven out of the display area. When radiating light to the liquid crystal composition containing the photosensitive material, the alignment of the liquid crystal molecules can be adjusted so as to achieve substantially orderly alignment of the liquid crystal molecules, and the liquid crystal display device can thus be driven stably.Type: GrantFiled: March 11, 2004Date of Patent: May 17, 2005Assignee: Fujitsu Display Technologies CorporationInventors: Yohei Nakanishi, Kazutaka Hanaoka, Yuichi Inoue, Masakazu Shibasaki
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Publication number: 20050099167Abstract: In order to restrict variations of an output voltage of a DC-DC conversion circuit using TFTs, in a boost-type, a second n-ch TFT N2 and a second p-ch TFT P2 are newly provided. With regard to the second n-ch TFT N2, a gate thereof is connected to a second capacitor C2, a source thereof is connected to a first reference voltage source YVDD, and a drain thereof is connected to a first capacitor C1. With regard to the second p-ch TFT P2, a gate thereof is connected to the second capacitor C2, a source thereof is connected to a third capacitor C3, and a drain thereof is connected to the first capacitor C1. Thus, a voltage at the first capacitor C1 stops being influenced by the variations of a threshold voltage between a source and drain of a first diode D1.Type: ApplicationFiled: October 25, 2004Publication date: May 12, 2005Applicant: Toshiba Matsushita Display Technology Co., Ltd.Inventor: Masao Karube
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Publication number: 20050099582Abstract: In a liquid crystal display device, liquid crystal molecules are oriented in a vertical direction to the first substrate and the second substrate by the first molecule orientation film and the second molecule orientation film, respectively, in a non-driving state. And, a structural pattern is formed so as to extend in a first direction parallel to a surface of the liquid crystal layer and so as to form, in a driving state, an electric field periodically changing in a second direction that is parallel to the liquid crystal layer and vertical to the first direction. Then, the liquid crystal molecules substantially tilt in the first direction in the driving state.Type: ApplicationFiled: September 18, 2003Publication date: May 12, 2005Applicants: FUJITSU DISPLAY TECHNOLOGIES CORPORATIONInventors: Seiji Doi, Tetsuya Fujikawa, Takashi Takagi, Hiroyasu Inoue
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Patent number: 6891325Abstract: The use of a mixture comprising reactive oxygen species and reactive fluorine and/or chlorine species in the production of an organic light-emissive device, comprising an organic light emissive region provided between two electrodes such that charge carriers can move between the electrodes and the organic light emissive region, for etching the organic light-emissive region.Type: GrantFiled: November 22, 2000Date of Patent: May 10, 2005Assignee: Cambridge Display Technology LimitedInventors: Christopher G. Nice, Christopher J. Bright
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Patent number: 6891576Abstract: A substrate is plotted into a plurality of blocks, and each block is plotted into one or a plurality of device-forming regions. By using a first manufacturing line, a conductive film, an insulating film and a semiconductor film which constitute TFT are formed in the device-forming region. Then, primary cutting is performed to cut the substrate into the respective blocks and form a plurality of sub-TFT substrates. Then, by using a second manufacturing line, processing is performed for each sub-TFT substrate in accordance with specifications of a liquid crystal panel to be manufactured. Then, secondary cutting is performed to cut the sub-TFT substrate into respective device-forming regions.Type: GrantFiled: March 10, 2003Date of Patent: May 10, 2005Assignee: Fujitsu Display Technologies CorporationInventor: Hongyung Zhang
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Publication number: 20050093851Abstract: A display device has display elements provided inside of pixels formed in vicinity of signal lines and scanning lines aligned in matrix form, a plurality of image capture circuits, each capturing image at a certain range of a subject, and being provided one for every multiple pixels, a scanning line drive circuit which drives the scanning lines, a signal line drive circuit which drives the signal lines, a pixel voltage supply control circuit which controls whether or not to supply a pixel voltage to the corresponding signal line, and a pre-charge voltage supply control circuit which controls whether or not to supply a pre-charge voltage capable of changing voltage level for each signal line to the corresponding signal line.Type: ApplicationFiled: October 29, 2004Publication date: May 5, 2005Applicant: Toshiba Matsushita Display Technology Co., Ltd.Inventors: Takashi Nakamura, Hirotaka Hayashi
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Publication number: 20050092999Abstract: A conductive film made of Al or alloy containing Al as a main component is formed on an underlying substrate. An upper conductive film is disposed on the conductive film. A first opening is formed through the upper conductive film. An insulating film is disposed on the upper conductive film. A second opening is formed through the insulating film. An inner wall of the second opening is retreated from an inner wall of the first opening. An ITO film is formed covering a partial upper surface of the insulating film and inner surfaces of the first and second openings, and contacting a partial upper surface of the upper conductive film at a region inside of the second opening. Good electrical contact between an Al or Al alloy film and an ITO film can be established and productivity can be improved.Type: ApplicationFiled: November 30, 2004Publication date: May 5, 2005Applicant: FUJITSU DISPLAY TECHNOLOGIES CORPORATIONInventors: Tetsuya Fujikawa, Hidetoshi Sukenori, Shougo Hayashi, Yoshinori Tanaka, Masahiro Kihara
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Patent number: 6887744Abstract: A thin film transistor substrate including a semiconductor layer having a source region and a drain region, an insulating film and a gate electrode which are formed on the semiconductor layer, an interlayer insulating film which is a film stack with mutually different dielectric constants and which covers the gate electrode, a source region contact hole and a drain region contact hole which are formed on the interlayer insulating film, a pixel electrode connected to the source region through the source region contact hole, a first conductive film connected to the drain region through the drain region contact hole and formed of the same film as that of the pixel electrode, and a second conductive film connected to the drain region through the first conductive film.Type: GrantFiled: December 9, 2002Date of Patent: May 3, 2005Assignee: Fujitsu Display Technologies CorporationInventor: Kazushige Hotta
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Patent number: 6887973Abstract: An organic polymer comprising a conjugated backbone for transporting negative charge carriers and having a first band gap and at least one side unit pendent from the backbone for transporting positive charge carriers and having a second band gap, wherein the structure of the organic polymer is selected so that the first and second band gaps are distinct from one another in the polymer.Type: GrantFiled: February 26, 2001Date of Patent: May 3, 2005Assignee: Cambridge Display Technology LimitedInventors: Carl Towns, Richard O'Dell, Valerie Grand
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Patent number: 6888602Abstract: In a vertically aligned liquid crystal display device for controlling liquid crystal molecules alignment in voltage application by providing linear structures or linear slits consisting of a plurality of constituent units to at least one of a pair of substrates having an electrode thereon, there is provided alignment controlling means for forming an alignment singular point s=?1 of liquid crystal molecules at an intersecting point between the structures on the pixel electrode or the slits in the electrode and an edge of a pixel electrode on one of the substrates.Type: GrantFiled: April 25, 2003Date of Patent: May 3, 2005Assignee: Fujitsu Display Technologies CorporationInventors: Arihiro Takeda, Yoshio Koike, Takahiro Sasaki, Kouji Tsukao, Shingo Kataoka, Kimiaki Nakamura, Yuichi Inoue, Kazutaka Hanaoka, Seiji Tanuma, Takatoshi Mayama, Hidefumi Yoshida, Yasutoshi Tasaka, Takashi Sasabayashi, Yohei Nakanishi
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Publication number: 20050083084Abstract: It is necessary to reduce power consumption in a liquid crystal display device. A drive voltage generation circuit 201 including: a clock signal dividing circuit 204 which applies signal processing, which does not divide a frequency of a clock signal SG22 to be inputted from the outside during a display period T13 for performing basic display for always displaying a radio wave reception state or the like of a cellular phone within a liquid crystal display panel and divides the frequency on the basis of a standard decided in advance during periods other than the display period T13, to a clock signal; and booster circuits 202 and 203 which generate a predetermined voltage for performing basic display for always displaying a radio wave reception state or the like of a cellular phone within the liquid crystal display panel using the clock signal SG13, a frequency of which has been divided by the clock signal dividing circuit 204.Type: ApplicationFiled: October 27, 2003Publication date: April 21, 2005Applicant: Toshiba Matsushita Display TechnologyInventors: Shinichi Aota, Takashi Tsukada, Hideki Mine
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Patent number: 6882394Abstract: The invention relates to a substrate for a liquid crystal display used in a display section of an information apparatus, a liquid crystal display having the same, and a method of manufacturing the same. There is provided a substrate for a liquid crystal display which achieves good display quality with reduced manufacturing steps, a liquid crystal display having the same, and a method of manufacturing the same. TFTs are formed on a glass substrate. A protective film is formed on the TFTs, and a resist pattern is formed on the protective film, the resist pattern having openings located above source electrodes, gate bus line terminals, and drain bus line terminals. The resist pattern is baked at a baking temperature of 200° or more after irradiating the surface thereof with ultraviolet light to form a wrinkled resin layer having a wrinkled surface.Type: GrantFiled: May 29, 2003Date of Patent: April 19, 2005Assignee: Fujitsu-Display Technologies CorporationInventors: Seiji Doi, Yoshio Kurosawa
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Patent number: 6881598Abstract: An organic light-emitting device, comprising: a substrate; a first conductive layer formed over the substrate; at least one layer of a light-emissive organic material formed over the first conductive layer; a barrier layer formed over the at least one organic layer which acts to protect the at least one layer of organic material; and a second conductive layer, preferably a patterned sputtered layer, formed over the barrier layer.Type: GrantFiled: January 24, 2003Date of Patent: April 19, 2005Assignee: Cambridge Display Technology Ltd.Inventor: Karl Pichler
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Patent number: 6882388Abstract: The present invention is a method of manufacturing a liquid crystal display device, wherein light having an exposure energy is irradiated on the surface of a photo-sensitive resin layer having a predetermined film thickness, and a distribution of thermal deformation characteristics in the thickness direction (or the plane direction) of the photo-sensitive resin layer is formed, then heat treatment is performed to form random undulation (micro-grooves or micro-wrinkles) on the surface of the photo-sensitive resin layer.Type: GrantFiled: January 18, 2002Date of Patent: April 19, 2005Assignee: Fujitsu Display Technologies CorporationInventors: Norio Sugiura, Katsufumi Ohmuro, Yoshio Koike, Kunihiro Tashiro, Takeshi Gotoh, Tetsuya Hamada, Keiji Hayashi, Toshihiro Suzuki, Tetsuya Kobayashi, Kimiaki Nakamura, Mari Sugawara
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Patent number: 6882393Abstract: A pair of substrates is disposed in parallel at a gap distance therebetween. Liquid crystal material containing liquid crystal molecules having negative dielectric anisotropy is filled in between the substrates. The liquid crystal molecules are homeotropically aligned. On the opposing surface of one of the substrates, pixel electrodes are disposed in a matrix form and data bus lines and gate bus lines are disposed. The gate bus line passes an inner area of each pixel electrode. Switching elements are formed on the opposing surface of the substrate. Each switching element is controlled by the gate bus line at another row. Protrusions are formed on the opposing surface of one of the substrates. The protrusions divide an area of the pixel electrode into a plurality of areas and each is bent on the gate bus line. A domain border regulating unit is formed on the opposing surface of the other of the substrates. The protrusions and domain border regulating unit define the borders of each domain.Type: GrantFiled: April 11, 2003Date of Patent: April 19, 2005Assignee: Fujitsu Display Technologies CorporationInventors: Satoru Kawai, Tsuyoshi Kamada
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Publication number: 20050078235Abstract: It is an object of the invention to provide a display and a method for repairing defects of the same in which defects such as inter-layer short-circuits and short-circuits in a single that have occurred at steps for manufacturing the display can be easily repaired to provide a good product with a probability higher than that in the related art. Laser irradiation is carried out as a first cycle of laser irradiation by forming a slit S1 in a region where a drain bus line 220 completely covers a gate bus line 218 to form a cut portion longer than the width of the gate bus line 218 adjacent to an inter-layer short-circuit 290 such that it splits an intersecting portion of the drain bus line 220 into two parts as shown in FIG. 5b. Next, as shown in FIG. 5c, slits S2 and S3 are respectively used for second and third cycles of laser irradiation to cut the drain bus line 220 at both ends of the cut portion (indicated by S1), thereby isolating the inter-layer short-circuit 290 of the drain bus line 220.Type: ApplicationFiled: October 19, 2004Publication date: April 14, 2005Applicant: FUJITSU DISPLAY TECHNOLOGIES CORPORATIONInventors: Kiyoshi Ozaki, Tsuyoshi Kamada, Kunio Matsubara, Shinya Katoh, Yoshihisa Taguchi, Katsushige Asada, Shogo Hayashi
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Patent number: 6878312Abstract: A composition, which can be used in an ink jet printing method, can use either a non-polar or a weakly polar material as a functional material, prevents clogging at dispensing time, achieves stable dispensing, and prevents precipitation of content matter during dispensing and phase separation during film formation, a uniform, homogenous functional film formed using this composition and a manufacturing method therefor, as well as an organic EL device or other such display device and a manufacturing method therefor. A composition of the present invention consists of a functional material, and a solvent comprising at least one benzene derivative, which has one or more substituents, and these substituents have 3 or more carbon atoms in total. A functional film of the present invention is formed using the above-mentioned composition. A display device of the present invention comprises luminescent material layers formed using the above-mentioned composition between two electrodes.Type: GrantFiled: March 29, 2000Date of Patent: April 12, 2005Assignees: Seiko Epson Corporation, Cambridge Display Technology LimitedInventors: Sadao Kanbe, Shunichi Seki
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Patent number: 6878297Abstract: A method for forming a patterned layer of a light-emissive material on a substrate, comprising the steps of providing a holed layer on the surface of the substrate, the holed layer being permanently attached to the substrate and defining a plurality of holes through which the underlying substrate is exposed, and applying a light-emissive material to the surface of the holed layer opposite the substrate and displacing the light-emissive material in fluid form across the surface of the holed layer so as to selectively deposit the material only in the holes of the holed layer.Type: GrantFiled: June 1, 2000Date of Patent: April 12, 2005Assignee: Cambridge Display Technology, LimitedInventors: Paul R. Berger, Stephen Karl Heeks
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Patent number: 6879364Abstract: A liquid crystal display apparatus including a pair of substrates having electrodes and vertical alignment layers. A liquid crystal having a negative anisotropy of dielectric is inserted between the substrates. Each substrate has linearly arranged alignment control structures for controlling the alignment of the liquid crystal. The alignment control structures are formed in the form of projections or slits. Each alignment control structure is formed of a plurality of constituent units. In addition, means for forming a boundary of alignment of liquid crystal (singular point in director field) to control the liquid crystal located on the alignment control structures.Type: GrantFiled: July 17, 2003Date of Patent: April 12, 2005Assignee: Fujitsu Display Technologies CorporationInventors: Takahiro Sasaki, Arihiro Takeda, Katsufumi Ohmuro, Hideo Chida, Yoshio Koike, Kimiaki Nakamura, Kunihiro Tashiro