Patents by Inventor Hideki Uochi
Hideki Uochi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10054830Abstract: It is an object of the present invention to apply a sufficient electrical field to a liquid crystal material in a horizontal electrical field liquid crystal display device typified by an FFS type. In a horizontal electrical field liquid crystal display, an electrical field is applied to a liquid crystal material right above a common electrode and a pixel electrode using plural pairs of electrodes rather than one pair of electrodes. One pair of electrodes includes a comb-shaped common electrode and a comb-shaped pixel electrode. Another pair of electrodes includes a common electrode provided in a pixel portion and the comb-shaped pixel electrode.Type: GrantFiled: February 20, 2018Date of Patent: August 21, 2018Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Hajime Kimura, Hideki Uochi
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Publication number: 20180224961Abstract: A display device with less power consumption. The display device operates in a still image display period and a moving image display period, and includes a receiving circuit having a function of receiving an image signal, a driver circuit having a function of driving a display portion, and the display portion having a function of displaying an image. The display portion displays an image at a frame frequency of less than or equal to 1 Hz in the still image display period. The receiving circuit stops receiving an image signal in the still image display period. Switching from the still image display period to the moving image display period is accurately performed by an external signal.Type: ApplicationFiled: January 12, 2018Publication date: August 9, 2018Inventors: Roh YAMAMOTO, Hideki UOCHI
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Patent number: 10043915Abstract: By using a conductive layer including Cu as a long lead wiring, increase in wiring resistance is suppressed. Further, the conductive layer including Cu is provided in such a manner that it does not overlap with the oxide semiconductor layer in which a channel region of a TFT is formed, and is surrounded by insulating layers including silicon nitride, whereby diffusion of Cu can be prevented; thus, a highly reliable semiconductor device can be manufactured. Specifically, a display device which is one embodiment of a semiconductor device can have high display quality and operate stably even when the size or definition thereof is increased.Type: GrantFiled: February 15, 2017Date of Patent: August 7, 2018Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shunpei Yamazaki, Jun Koyama, Masahiro Takahashi, Hideyuki Kishida, Akiharu Miyanaga, Junpei Sugao, Hideki Uochi, Yasuo Nakamura
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Patent number: 10032796Abstract: A display device includes a pixel portion in which a pixel electrode layer is arranged in a matrix, and an inverted staggered thin film transistor having a combination of at least two kinds of oxide semiconductor layers with different amounts of oxygen is provided corresponding to the pixel electrode layer. In the periphery of the pixel portion in this display device, a pad portion is provided to be electrically connected to a common electrode layer formed on a counter substrate through a conductive layer made of the same material as the pixel electrode layer. One objection of our invention to prevent a defect due to separation of a thin film in various kinds of display devices is realized, by providing a structure suitable for a pad portion provided in a display panel.Type: GrantFiled: March 8, 2016Date of Patent: July 24, 2018Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shunpei Yamazaki, Kengo Akimoto, Shigeki Komori, Hideki Uochi, Rihito Wada, Yoko Chiba
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Publication number: 20180203312Abstract: In order to take advantage of the properties of a display device including an oxide semiconductor, a protective circuit and the like having appropriate structures and a small occupied area are necessary. The protective circuit is formed using a non-linear element which includes a gate insulating film covering a gate electrode; a first oxide semiconductor layer over the gate insulating film; a channel protective layer covering a region which overlaps with a channel formation region of the first oxide semiconductor layer; and a first wiring layer and a second wiring layer each of which is formed by stacking a conductive layer and a second oxide semiconductor layer and over the first oxide semiconductor layer. The gate electrode is connected to a scan line or a signal line, the first wiring layer or the second wiring layer is directly connected to the gate electrode.Type: ApplicationFiled: March 8, 2018Publication date: July 19, 2018Inventors: Shunpei YAMAZAKI, Kengo AKIMOTO, Shigeki KOMORI, Hideki UOCHI, Tomoya FUTAMURA, Takahiro KASAHARA
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Publication number: 20180180954Abstract: It is an object of the present invention to apply a sufficient electrical field to a liquid crystal material in a horizontal electrical field liquid crystal display device typified by an FFS type. In a horizontal electrical field liquid crystal display, an electrical field is applied to a liquid crystal material right above a common electrode and a pixel electrode using plural pairs of electrodes rather than one pair of electrodes. One pair of electrodes includes a comb-shaped common electrode and a comb-shaped pixel electrode. Another pair of electrodes includes a common electrode provided in a pixel portion and the comb-shaped pixel electrode.Type: ApplicationFiled: February 20, 2018Publication date: June 28, 2018Inventors: Hajime KIMURA, Hideki UOCHI
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Publication number: 20180095502Abstract: An electronic device with favorable reliability is provided. The electronic device can be folded in half and includes a bendable display device. In the electronic device, a first space is provided in the neighborhood of a hinge that connects two housings. Part of the display device is stored in a second space when the electronic device is folded, which prevents excessing bending of the display device and increases reliability. The display device may be provided on a side surface of the housings, which increases visibility. The side surface of the housings preferably includes a curved surface. The display device may include a first pixel reflecting visible light and a second pixel emitting visible light, which increases the visibility and decreases power consumption of the electronic device.Type: ApplicationFiled: October 2, 2017Publication date: April 5, 2018Inventors: Shunpei YAMAZAKI, Hideki UOCHI
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Publication number: 20180081247Abstract: It is an object of the present invention to provide a liquid crystal display device which has a wide viewing angle and less color-shift depending on an angle at which a display screen is seen and can display an image favorably recognized both outdoors in sunlight and dark indoors (or outdoors at night). The liquid crystal display device includes a first portion where display is performed by transmission of light and a second portion where display is performed by reflection of light. Further, a liquid crystal layer includes a liquid crystal molecule which rotates parallel to an electrode plane when a potential difference is generated between two electrodes of a liquid crystal element provided below the liquid crystal layer.Type: ApplicationFiled: November 30, 2017Publication date: March 22, 2018Inventors: Hajime Kimura, Hideki Uochi
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Patent number: 9915843Abstract: In order to take advantage of the properties of a display device including an oxide semiconductor, a protective circuit and the like having appropriate structures and a small occupied area are necessary. The protective circuit is formed using a non-linear element which includes a gate insulating film covering a gate electrode; a first oxide semiconductor layer over the gate insulating film; a channel protective layer covering a region which overlaps with a channel formation region of the first oxide semiconductor layer; and a first wiring layer and a second wiring layer each of which is formed by stacking a conductive layer and a second oxide semiconductor layer and over the first oxide semiconductor layer. The gate electrode is connected to a scan line or a signal line, the first wiring layer or the second wiring layer is directly connected to the gate electrode.Type: GrantFiled: June 15, 2017Date of Patent: March 13, 2018Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shunpei Yamazaki, Kengo Akimoto, Shigeki Komori, Hideki Uochi, Tomoya Futamura, Takahiro Kasahara
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Patent number: 9904127Abstract: It is an object of the present invention to apply a sufficient electrical field to a liquid crystal material in a horizontal electrical field liquid crystal display device typified by an FFS type. In a horizontal electrical field liquid crystal display, an electrical field is applied to a liquid crystal material right above a common electrode and a pixel electrode using plural pairs of electrodes rather than one pair of electrodes. One pair of electrodes includes a comb-shaped common electrode and a comb-shaped pixel electrode. Another pair of electrodes includes a common electrode provided in a pixel portion and the comb-shaped pixel electrode.Type: GrantFiled: January 4, 2017Date of Patent: February 27, 2018Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Hajime Kimura, Hideki Uochi
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Publication number: 20180047852Abstract: It is an object to provide a semiconductor device typified by a display device having a favorable display quality, in which parasitic resistance generated in a connection portion between a semiconductor layer and an electrode is suppressed and an adverse effect such as voltage drop, a defect in signal wiring to a pixel, a defect in grayscale, and the like due to wiring resistance are prevented. In order to achieve the above object, a semiconductor device according to the present invention may have a structure where a wiring with low resistance is connected to a thin film transistor in which a source electrode and a drain electrode that include metal with high oxygen affinity are connected to an oxide semiconductor layer with a suppressed impurity concentration. In addition, the thin film transistor including the oxide semiconductor may be surrounded by insulating films to be sealed.Type: ApplicationFiled: October 10, 2017Publication date: February 15, 2018Inventors: Shunpei YAMAZAKI, Jun KOYAMA, Masahiro TAKAHASHI, Hideyuki KISHIDA, Akiharu MIYANAGA, Yasuo NAKAMURA, Junpei SUGAO, Hideki UOCHI
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Patent number: 9886150Abstract: A display device with less power consumption. The display device operates in a still image display period and a moving image display period, and includes a receiving circuit having a function of receiving an image signal, a driver circuit having a function of driving a display portion, and the display portion having a function of displaying an image. The display portion displays an image at a frame frequency of less than or equal to 1 Hz in the still image display period. The receiving circuit stops receiving an image signal in the still image display period. Switching from the still image display period to the moving image display period is accurately performed by an external signal.Type: GrantFiled: September 3, 2015Date of Patent: February 6, 2018Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Roh Yamamoto, Hideki Uochi
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Patent number: 9865742Abstract: It is an object to provide a semiconductor device typified by a display device having a favorable display quality, in which parasitic resistance generated in a connection portion between a semiconductor layer and an electrode is suppressed and an adverse effect such as voltage drop, a defect in signal wiring to a pixel, a defect in grayscale, and the like due to wiring resistance are prevented. In order to achieve the above object, a semiconductor device according to the present invention may have a structure where a wiring with low resistance is connected to a thin film transistor in which a source electrode and a drain electrode that include metal with high oxygen affinity are connected to an oxide semiconductor layer with a suppressed impurity concentration. In addition, the thin film transistor including the oxide semiconductor may be surrounded by insulating films to be sealed.Type: GrantFiled: December 28, 2012Date of Patent: January 9, 2018Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shunpei Yamazaki, Jun Koyama, Masahiro Takahashi, Hideyuki Kishida, Akiharu Miyanaga, Yasuo Nakamura, Junpei Sugao, Hideki Uochi
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Publication number: 20170371190Abstract: A highly reliable display device is provided. In a flexible display device including at least a first display region and a second display region, at least a portion of a wiring provided in the first display region or the second display region has a meandering shape or a chain-like shape. Since the wiring has a meandering shape or a chain-like shape, a short-circuit, a disconnection, or the like of the wiring due to curving or bending of the display device does not occur easily. The wiring having a meandering shape or a chain-like shape can prevent defective operation, lowered reliability, or the like of the display device.Type: ApplicationFiled: June 15, 2017Publication date: December 28, 2017Inventors: Shunpei YAMAZAKI, Daisuke KUBOTA, Hideki UOCHI
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Patent number: 9835912Abstract: It is an object of the present invention to provide a liquid crystal display device which has a wide viewing angle and less color-shift depending on an angle at which a display screen is seen and can display an image favorably recognized both outdoors in sunlight and dark indoors (or outdoors at night). The liquid crystal display device includes a first portion where display is performed by transmission of light and a second portion where display is performed by reflection of light. Further, a liquid crystal layer includes a liquid crystal molecule which rotates parallel to an electrode plane when a potential difference is generated between two electrodes of a liquid crystal element provided below the liquid crystal layer.Type: GrantFiled: August 10, 2016Date of Patent: December 5, 2017Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Hajime Kimura, Hideki Uochi
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Patent number: 9823526Abstract: It is an object of the present invention to apply a sufficient electrical field to a liquid crystal material in a horizontal electrical field liquid crystal display device typified by an FFS type. In a horizontal electrical field liquid crystal display, an electrical field is applied to a liquid crystal material right above a common electrode and a pixel electrode using plural pairs of electrodes rather than one pair of electrodes. One pair of electrodes includes a comb-shaped common electrode and a comb-shaped pixel electrode. Another pair of electrodes includes a common electrode provided in a pixel portion and the comb-shaped pixel electrode.Type: GrantFiled: March 14, 2016Date of Patent: November 21, 2017Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Hajime Kimura, Hideki Uochi
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Patent number: 9806138Abstract: A non-breakable display device, electronic appliance, or lighting device is provided. A bendable display device in which a first flexible substrate and a second flexible substrate provided with transistors overlap each other with a bonding layer therebetween is fabricated. The display device is bent so that the first substrate is positioned on the inner side (the valley side) and the second substrate is positioned on the outer side (the mountain side).Type: GrantFiled: May 24, 2016Date of Patent: October 31, 2017Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Hisao Ikeda, Hideki Uochi
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Publication number: 20170285425Abstract: In order to take advantage of the properties of a display device including an oxide semiconductor, a protective circuit and the like having appropriate structures and a small occupied area are necessary. The protective circuit is formed using a non-linear element which includes a gate insulating film covering a gate electrode; a first oxide semiconductor layer over the gate insulating film; a channel protective layer covering a region which overlaps with a channel formation region of the first oxide semiconductor layer; and a first wiring layer and a second wiring layer each of which is formed by stacking a conductive layer and a second oxide semiconductor layer and over the first oxide semiconductor layer. The gate electrode is connected to a scan line or a signal line, the first wiring layer or the second wiring layer is directly connected to the gate electrode.Type: ApplicationFiled: June 15, 2017Publication date: October 5, 2017Inventors: Shunpei YAMAZAKI, Kengo AKIMOTO, Shigeki KOMORI, Hideki UOCHI, Tomoya FUTAMURA, Takahiro KASAHARA
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Publication number: 20170264848Abstract: To provide a solid-state imaging device with short image-capturing duration. A first photodiode in a pixel in an n-th row and an m-th column is connected to a second photodiode in a pixel in an (n+1)-th row and the m-th column through a transistor. The first photodiode and the second photodiode receive light concurrently, the potential in accordance with the amount of received light is held in a pixel in the n-th row and the m-th column, and the potential in accordance with the amount of received light is held in a pixel in the (n+1)-th row and the m-th column without performing a reset operation. Then, each potential is read out. Under a large amount of light, either the first photodiode or the second photodiode is used.Type: ApplicationFiled: May 31, 2017Publication date: September 14, 2017Inventors: Yoshiyuki KUROKAWA, Hideki UOCHI
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Publication number: 20170243897Abstract: A display device including an oxide semiconductor, a protective circuit and the like having appropriate structures and a small occupied area is necessary. The protective circuit is formed using a non-linear element which includes a gate insulating film covering a gate electrode; a first oxide semiconductor layer which is over the gate insulating layer and overlaps with the gate electrode; and a first wiring layer and a second wiring layer each of which is formed by stacking a conductive layer and a second oxide semiconductor layer and whose end portions are over the first oxide semiconductor layer and overlap with the gate electrode. The gate electrode of the non-linear element is connected to a scan line or a signal line, the first wiring layer or the second wiring layer of the non-linear element is directly connected to the gate electrode layer so as to apply potential of the gate electrode.Type: ApplicationFiled: February 9, 2017Publication date: August 24, 2017Inventors: Shunpei YAMAZAKI, Kengo AKIMOTO, Shigeki KOMORI, Hideki UOCHI, Tomoya FUTAMURA, Takahiro KASAHARA