Patents by Inventor Munehiro Azami
Munehiro Azami 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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Publication number: 20150065162Abstract: A position specifying server includes a storage unit, a communication unit, an estimation unit, and a specifying unit. The storage unit stores GMMs corresponding to base stations of radio waves receivable by a terminal device on each floor. The communication unit receives measured values of the radio wave strengths of the radio waves which the terminal device receives from the base stations. The estimation unit estimates a position of the terminal device for each floor based on the received measured values of the radio wave strengths and the GMMs. The specifying unit calculates the estimated values of the radio wave strengths at the estimated position of the terminal device on each floor based on the GMMs and specifies the floor on which the terminal device is present based on the calculated estimated values of the radio wave strengths and the measured values of the radio wave strengths.Type: ApplicationFiled: September 10, 2013Publication date: March 5, 2015Applicant: YAHOO JAPAN CORPORATIONInventor: Munehiro AZAMI
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Patent number: 8970576Abstract: A novel driving method is provided in which source line inverting drive or dot inverting drive is performed for a case of driving a plurality of source lines by one D/A converter circuit in a source signal line driver circuit of an active matrix image display drive that corresponds to digital image signal input. In a first driving method of the present invention, two systems of grey-scale electric power supply lines are supplied to a source signal line driver circuit in order to obtain output having differing polarities from a D/A converter circuit, switches for connecting to the two systems of grey-scale electric power supply lines are prepared in each D/A converter circuit, the grey-scale electric power supply lines connected to each D/A converter circuit are switched in accordance with a control signal input to the switches, and source line inverting drive or dot inverting drive are performed.Type: GrantFiled: May 17, 2013Date of Patent: March 3, 2015Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventor: Munehiro Azami
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Patent number: 8952385Abstract: A light emitting device is provided which can prevent a change in gate voltage due to leakage or other causes and at the same time can prevent the aperture ratio from lowering. A capacitor storage is formed from a connection wiring line, an insulating film, and a capacitance wiring line. The connection wiring line is formed over a gate electrode and an active layer of a TFT of a pixel, and is connected to the active layer. The insulating film is formed on the connection wiring line. The capacitance wiring line is formed on the insulating film. This structure enables the capacitor storage to overlap the TFT, thereby increasing the capacity of the capacitor storage while keeping the aperture ratio from lowering. Accordingly, a change in gate voltage due to leakage or other causes can be avoided to prevent a change in luminance of an OLED and flickering of screen in analog driving.Type: GrantFiled: July 3, 2014Date of Patent: February 10, 2015Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shunpei Yamazaki, Jun Koyama, Tatsuya Arao, Munehiro Azami
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Publication number: 20150035033Abstract: A light emitting device is provided which can prevent a change in gate voltage due to leakage or other causes and at the same time can prevent the aperture ratio from lowering. A capacitor storage is formed from a connection wiring line, an insulating film, and a capacitance wiring line. The connection wiring line is formed over a gate electrode and an active layer of a TFT of a pixel, and is connected to the active layer. The insulating film is formed on the connection wiring line. The capacitance wiring line is formed on the insulating film. This structure enables the capacitor storage to overlap the TFT, thereby increasing the capacity of the capacitor storage while keeping the aperture ratio from lowering. Accordingly, a change in gate voltage due to leakage or other causes can be avoided to prevent a change in luminance of an OLED and flickering of screen in analog driving.Type: ApplicationFiled: July 3, 2014Publication date: February 5, 2015Inventors: Shunpei Yamazaki, Jun Koyama, Tatsuya Arao, Munehiro Azami
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Publication number: 20140327008Abstract: A pulse is inputted to TFTs 101 and 104 so that the TFTs would turn ON and then potential of a node ? rises. When the potential of the node ? reaches (VDD?VthN), the node ? became in a floating state. Accordingly, a TFT 105 then turns ON, and potential of an output node rises as a clock signal reaches the level H. On the other hand, potential of a gate electrode of the TFT 105 further rises due to an operation of capacitance 107 as the potential of the output node rises, so that the potential of the output node would be higher than (VDD+VthN). Thus, the potential of the output node rises to VDD without voltage drop caused by a threshold of the TFT 105.Type: ApplicationFiled: July 16, 2014Publication date: November 6, 2014Inventors: Munehiro Azami, Shou Nagao, Yoshifumi Tanada
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Patent number: 8854084Abstract: A sense amplifier according to the present invention for detecting a potential difference of signals input to a first input terminal and a second input terminal, includes a first means for applying voltages corresponding to threshold voltages of first and second transistors to gate-source voltages of the first and second transistors, and a second means for transferring signals input to the first and second input terminals to gates of the first and second transistors. In this case, a threshold variation of the first and second transistors is corrected.Type: GrantFiled: October 8, 2013Date of Patent: October 7, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Yutaka Shionoiri, Kiyoshi Kato, Munehiro Azami
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Patent number: 8786533Abstract: A pulse is input to first and second TFTs to turn ON the first and second TFTs so that the potential of a node a rises. When the potential of the node a reaches (VDD?VthN), the node ? enters a floating state. Accordingly, a third TFT then turns ON, and potential of an output node rises as a clock signal reaches the level H. On the other hand, potential of a gate electrode of the third TFT further rises due to an operation of capacitance as the potential of the output node rises, so that the potential of the output node would be higher than (VDD+VthN). Thus, the potential of the output node rises to VDD without voltage drop caused by a threshold of the third TFT.Type: GrantFiled: September 6, 2012Date of Patent: July 22, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Munehiro Azami, Shou Nagao, Yoshifumi Tanada
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Patent number: 8779431Abstract: A light emitting device is provided which can prevent a change in gate voltage due to leakage or other causes and at the same time can prevent the aperture ratio from lowering. A capacitor storage is formed from a connection wiring line, an insulating film, and a capacitance wiring line. The connection wiring line is formed over a gate electrode and an active layer of a TFT of a pixel, and is connected to the active layer. The insulating film is formed on the connection wiring line. The capacitance wiring line is formed on the insulating film. This structure enables the capacitor storage to overlap the TFT, thereby increasing the capacity of the capacitor storage while keeping the aperture ratio from lowering. Accordingly, a change in gate voltage due to leakage or other causes can be avoided to prevent a change in luminance of an OLED and flickering of screen in analog driving.Type: GrantFiled: September 26, 2013Date of Patent: July 15, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shunpei Yamazaki, Jun Koyama, Tatsuya Arao, Munehiro Azami
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Publication number: 20140159045Abstract: There is provided a semiconductor device in which fabrication steps can be reduced by constructing a circuit using only TFTs of one conductivity type and in which a voltage amplitude of an output signal can be normally obtained. A capacitance (205) is provided between a gate and a source of a TFT (203) connected to an output node, and a circuit formed of TFTs (201) and (202) has a function to bring a node ? into a floating state. When the node ? is in the floating state, a potential of the node ? is caused higher than VDD by using gate-source capacitance coupling of the TFT (203) through the capacitance (205), thus an output signal having an amplitude of VDD?GND can be normally obtained without causing amplitude attenuation due to the threshold value of the TFT.Type: ApplicationFiled: February 14, 2014Publication date: June 12, 2014Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventors: Munehiro Azami, Shou Nagao, Yoshifumi Tanada
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Patent number: 8665197Abstract: A pulse is input to first and second TFTs to turn ON the first and second TFTs so that the potential of a node a rises. When the potential of the node a reaches (VDD?VthN), the node ? enters a floating state. Accordingly, a third TFT then turns ON, and potential of an output node rises as a clock signal reaches the level H. On the other hand, potential of a gate electrode of the third TFT further rises due to an operation of capacitance as the potential of the output node rises, so that the potential of the output node would be higher than (VDD+VthN). Thus, the potential of the output node rises to VDD without voltage drop caused by a threshold of the third TFT.Type: GrantFiled: September 6, 2012Date of Patent: March 4, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Munehiro Azami, Shou Nagao, Yoshifumi Tanada
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Patent number: 8659532Abstract: There is provided a semiconductor device in which fabrication steps can be reduced by constructing a circuit using only TFTs of one conductivity type and in which a voltage amplitude of an output signal can be normally obtained. A capacitance (205) is provided between a gate and a source of a TFT (203) connected to an output node, and a circuit formed of TFTs (201) and (202) has a function to bring a node ? into a floating state. When the node ? is in the floating state, a potential of the node ? is caused higher than VDD by using gate-source capacitance coupling of the TFT (203) through the capacitance (205), thus an output signal having an amplitude of VDD-GND can be normally obtained without causing amplitude attenuation due to the threshold value of the TFT.Type: GrantFiled: September 14, 2012Date of Patent: February 25, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Munehiro Azami, Shou Nagao, Yoshifumi Tanada
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Publication number: 20140035671Abstract: A sense amplifier according to the present invention for detecting a potential difference of signals input to a first input terminal and a second input terminal, includes a first means for applying voltages corresponding to threshold voltages of first and second transistors to gate-source voltages of the first and second transistors, and a second means for transferring signals input to the first and second input terminals to gates of the first and second transistors. In this case, a threshold variation of the first and second transistors is corrected.Type: ApplicationFiled: October 8, 2013Publication date: February 6, 2014Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventors: Yutaka Shionoiri, Kiyoshi Kato, Munehiro Azami
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Publication number: 20140021459Abstract: A light emitting device is provided which can prevent a change in gate voltage due to leakage or other causes and at the same time can prevent the aperture ratio from lowering. A capacitor storage is formed from a connection wiring line, an insulating film, and a capacitance wiring line. The connection wiring line is formed over a gate electrode and an active layer of a TFT of a pixel, and is connected to the active layer. The insulating film is formed on the connection wiring line. The capacitance wiring line is formed on the insulating film. This structure enables the capacitor storage to overlap the TFT, thereby increasing the capacity of the capacitor storage while keeping the aperture ratio from lowering. Accordingly, a change in gate voltage due to leakage or other causes can be avoided to prevent a change in luminance of an OLED and flickering of screen in analog driving.Type: ApplicationFiled: September 26, 2013Publication date: January 23, 2014Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shunpei Yamazaki, Jun Koyama, Tatsuya Arao, Munehiro Azami
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Patent number: 8581631Abstract: A sense amplifier according to the present invention for detecting a potential difference of signals input to a first input terminal and a second input terminal, includes a first means for applying voltages corresponding to threshold voltages of first and second transistors to gate-source voltages of the first and second transistors, and a second means for transferring signals input to the first and second input terminals to gates of the first and second transistors. In this case, a threshold variation of the first and second transistors is corrected.Type: GrantFiled: November 15, 2012Date of Patent: November 12, 2013Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Yutaka Shionoiri, Kiyoshi Kato, Munehiro Azami
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Patent number: 8546825Abstract: A light emitting device is provided which can prevent a change in gate voltage due to leakage or other causes and at the same time can prevent the aperture ratio from lowering. A capacitor storage is formed from a connection wiring line, an insulating film, and a capacitance wiring line. The connection wiring line is formed over a gate electrode and an active layer of a TFT of a pixel, and is connected to the active layer. The insulating film is formed on the connection wiring line. The capacitance wiring line is formed on the insulating film. This structure enables the capacitor storage to overlap the TFT, thereby increasing the capacity of the capacitor storage while keeping the aperture ratio from lowering. Accordingly, a change in gate voltage due to leakage or other causes can be avoided to prevent a change in luminance of an OLED and flickering of screen in analog driving.Type: GrantFiled: July 23, 2012Date of Patent: October 1, 2013Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shunpei Yamazaki, Jun Koyama, Tatsuya Arao, Munehiro Azami
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Publication number: 20130249890Abstract: A novel driving method is provided in which source line inverting drive or dot inverting drive is performed for a case of driving a plurality of source lines by one D/A converter circuit in a source signal line driver circuit of an active matrix image display drive that corresponds to digital image signal input. In a first driving method of the present invention, two systems of grey-scale electric power supply lines are supplied to a source signal line driver circuit in order to obtain output having differing polarities from a D/A converter circuit, switches for connecting to the two systems of grey-scale electric power supply lines are prepared in each D/A converter circuit, the grey-scale electric power supply lines connected to each D/A converter circuit are switched in accordance with a control signal input to the switches, and source line inverting drive or dot inverting drive are performed.Type: ApplicationFiled: May 17, 2013Publication date: September 26, 2013Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventor: Munehiro AZAMI
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Patent number: 8446353Abstract: A novel driving method is provided in which source line inverting drive or dot inverting drive is performed for a case of driving a plurality of source lines by one D/A converter circuit in a source signal line driver circuit of an active matrix image display drive that corresponds to digital image signal input. In a first driving method of the present invention, two systems of grey-scale electric power supply lines are supplied to a source signal line driver circuit in order to obtain output having differing polarities from a D/A converter circuit, switches for connecting to the two systems of grey-scale electric power supply lines are prepared in each D/A converter circuit, the grey-scale electric power supply lines connected to each D/A converter circuit are switched in accordance with a control signal input to the switches, and source line inverting drive or dot inverting drive are performed.Type: GrantFiled: April 16, 2010Date of Patent: May 21, 2013Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventor: Munehiro Azami
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Publication number: 20130063328Abstract: There is provided a semiconductor device in which fabrication steps can be reduced by constructing a circuit using only TFTs of one conductivity type and in which a voltage amplitude of an output signal can be normally obtained. A capacitance (205) is provided between a gate and a source of a TFT (203) connected to an output node, and a circuit formed of TFTs (201) and (202) has a function to bring a node ? into a floating state. When the node ? is in the floating state, a potential of the node ? is caused higher than VDD by using gate-source capacitance coupling of the TFT (203) through the capacitance (205), thus an output signal having an amplitude of VDD?GND can be normally obtained without causing amplitude attenuation due to the threshold value of the TFT.Type: ApplicationFiled: September 14, 2012Publication date: March 14, 2013Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventors: Munehiro AZAMI, Shou NAGAO, Yoshifumi TANADA
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Publication number: 20130057161Abstract: A pulse is input to first and second TFTs to turn ON the first and second TFTs so that the potential of a node ? rises. When the potential of the node ? reaches (VDD?VthN), the node ? enters a floating state. Accordingly, a third TFT then turns ON, and potential of an output node rises as a clock signal reaches the level H. On the other hand, potential of a gate electrode of the third TFT further rises due to an operation of capacitance as the potential of the output node rises, so that the potential of the output node would be higher than (VDD+VthN). Thus, the potential of the output node rises to VDD without voltage drop caused by a threshold of the third TFT.Type: ApplicationFiled: September 6, 2012Publication date: March 7, 2013Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventors: Munehiro Azami, Shou Nagao, Yoshifumi Tanada
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Patent number: 8330498Abstract: A sense amplifier according to the present invention for detecting a potential difference of signals input to a first input terminal and a second input terminal, includes a first means for applying voltages corresponding to threshold voltages of first and second transistors to gate-source voltages of the first and second transistors, and a second means for transferring signals input to the first and second input terminals to gates of the first and second transistors. In this case, a threshold variation of the first and second transistors is corrected.Type: GrantFiled: February 7, 2012Date of Patent: December 11, 2012Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Yutaka Shionoiri, Kiyoshi Kato, Munehiro Azami