Patents by Inventor Tetsuya Shigeta
Tetsuya Shigeta 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: 20220172674Abstract: A display module includes a plurality of pixels; a substrate; a plurality of inorganic LEDs arranged on the substrate, each of the plurality of pixels including two or more inorganic LEDs among the plurality of inorganic LEDs; and a plurality of micro-pixel controllers two-dimensionally arranged in a first direction and a second direction on the substrate, each of the plurality of micro-pixel controllers being configured to control two or more pixels among the plurality of pixels. Each micro-pixel controller of the plurality of micro-pixel controllers is electrically connected to micro-pixel controllers adjacent thereto, and is configured to convert a voltage input from one of the micro-pixel controllers that is electrically connected thereto in a direction opposite to the first direction into a target voltage and supply the target voltage to another micro-pixel controller of the micro-pixel controllers that is electrically connected thereto in the first direction.Type: ApplicationFiled: February 18, 2022Publication date: June 2, 2022Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jongsu OH, Daisuke KAWAE, Junichi YAMASHITA, Sangyoung PARK, Hoseop LEE, Tetsuya SHIGETA
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Patent number: 11210995Abstract: Disclosed is a display module. The display module includes a display panel including an inorganic light emitting device, a sweep electrode connected to at least one input pin, and a pulse width modulation (PWM) pixel circuit, and a driving unit configured to provide a sweep signal to the sweep electrode through the at least one input pin, in which the PWM pixel circuit includes a driving transistor, and provides a driving current having a pulse width corresponding to a data voltage to the inorganic light emitting device by changing a voltage of a gate terminal of the driving transistor according to the sweep signal applied through the sweep electrode, and a number of the at least one input pin varies depending on a size of the display panel.Type: GrantFiled: February 13, 2020Date of Patent: December 28, 2021Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jinho Kim, Sangmin Shin, Tetsuya Shigeta
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Publication number: 20210304670Abstract: A display panel includes a plurality of pixels arranged in a matrix, the plurality of pixels respectively including a plurality of sub pixels. The plurality of sub pixels respectively includes a light emitting element, and a PWM pixel circuit configured to control a light emitting duration of the light emitting element, based on a pulse width modulation (PWM) data voltage and a sweep voltage. A plurality of PWM pixel circuits included in the display panel are driven, for each of row lines of the plurality of pixels, in an order of a data setting period for setting the PWM data voltage and then a light emitting period in which the light emitting element emits light during a duration corresponding to the set PWM data voltage according to a change of the sweep voltage.Type: ApplicationFiled: June 10, 2021Publication date: September 30, 2021Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Tetsuya SHIGETA, Jinho Kim, Sangyoung Park, Hoseop Lee
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Publication number: 20210241682Abstract: A display panel is provided. The display panel includes a plurality of light-emitting diodes constituting a plurality of sub-pixels of the display panel and configured to be divided into a plurality of groups; and a plurality of LED driving circuits configured to: receive a PWM data voltage in a scanning period; and based on the PWM data voltage, drive the plurality of light-emitting diodes by providing drive current to the plurality of light-emitting diodes for a time corresponding to the PWM data voltage in an emission period, wherein each of the plurality of LED driving circuits is configured to be connected to light-emitting diodes included in respective groups of the plurality of groups, and drive the light-emitting diodes of the respective groups.Type: ApplicationFiled: February 3, 2021Publication date: August 5, 2021Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Youngki JUNG, Tetsuya SHIGETA, Jinho KIM, Chulgyu JUNG
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Publication number: 20210210002Abstract: A display module includes a display panel in which a plurality of pixels each including a plurality of sub-pixels are disposed on a plurality of row lines; and a driver. The driver is configured to set a PWM data voltage to the plurality of sub-pixels included in the plurality of row lines in a row line sequence, apply a sweep signal, which is a voltage signal sweeping between two different voltages, to sub-pixels among the plurality of sub-pixels that are included in at least some consecutive row lines among the plurality of row lines in the row line sequence, and drive the display panel to cause the sub-pixels included in the at least some consecutive row lines to emit light based on the PWM data voltage in the row line sequence.Type: ApplicationFiled: December 31, 2020Publication date: July 8, 2021Applicants: SAMSUNG ELECTRONICS CO., LTD., RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITYInventors: Jinho Kim, Yong-Sang Kim, Donggun Oh, Jongsu Oh, Tetsuya Shigeta
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Publication number: 20210210003Abstract: A display module including a display panel comprising a plurality of pixels each comprising a plurality of sub pixels, the pixels being disposed on a plurality of row lines of the display panel and a driver. The driver being configured to apply a pulse width modulation (PWM) data voltage to the sub pixels in a sequential order of the row lines; and drive the display panel such that the sub pixels included in a plurality of consecutive row lines among the plurality of row lines emit light, in the sequential order of the row lines, for a time corresponding to the applied PWM data voltage.Type: ApplicationFiled: January 4, 2021Publication date: July 8, 2021Applicants: SAMSUNG ELECTRONICS CO., LTD., RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITYInventors: Jinho KIM, Yong-Sang Kim, Daisuke Kawae, Junichi Yamashita, Takashige Fujimori, Donggun Oh, Jongsu Oh, Tetsuya Shigeta
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Patent number: 11056047Abstract: A display panel includes a plurality of pixels arranged in a matrix, the plurality of pixels respectively including a plurality of sub pixels. The plurality of sub pixels respectively includes a light emitting element, and a PWM pixel circuit configured to control a light emitting duration of the light emitting element, based on a pulse width modulation (PWM) data voltage and a sweep voltage. A plurality of PWM pixel circuits included in the display panel are driven, for each of row lines of the plurality of pixels, in an order of a data setting period for setting the PWM data voltage and then a light emitting period in which the light emitting element emits light during a duration corresponding to the set PWM data voltage according to a change of the sweep voltage.Type: GrantFiled: December 31, 2019Date of Patent: July 6, 2021Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Tetsuya Shigeta, Jinho Kim, Sangyoung Park, Hoseop Lee
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Patent number: 10886443Abstract: A light emitting device package includes a light emitting device that generates light, a body frame including a cavity in which the light emitting device is mounted, a molding material that fills the cavity, and absorbing pigments that convert the light generated by the light emitting device. The absorbing pigments have a peak value within a wavelength range of 490 to 520 nm and a full width at half maximum (FWHM) of 40 to 70 nm.Type: GrantFiled: August 10, 2018Date of Patent: January 5, 2021Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sang Kyun Im, Tetsuya Shigeta, Ho Seop Lee, Seong-Phil Cho
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Publication number: 20200394953Abstract: A display module includes a display panel including an inorganic light emitting element and a pixel circuit configured to provide a driving current to the inorganic light emitting element; and a driver configured to drive the pixel circuit. The pixel circuit includes a pulse amplitude modulation (PAM) circuit configured to control an amplitude of the driving current based on an applied PAM data voltage, and a pulse width modulation (PWM) circuit configured to control a pulse width of the driving current based on an applied PWM data voltage. The driver includes a power supply circuit configured to provide, to the PAM circuit, a first power supply voltage for driving the PAM circuit, and provide, to the PWM circuit, a second power supply voltage for driving the PWM circuit.Type: ApplicationFiled: June 17, 2020Publication date: December 17, 2020Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jinho KIM, Tetsuya SHIGETA, Taesoon PARK, Sangmin SHIN, Youngki JUNG
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Patent number: 10825377Abstract: A display apparatus, including a display panel which includes a light emitting element, a storage configured to store a plurality of compensation coefficients corresponding to a plurality of gray levels according to a parasitic capacitance of the light emitting element, and a processor configured to obtain a compensation coefficient from the plurality of compensation coefficients based on at least one of a position of a scan line and a gray level of scan data, compensate the gray level of the scan data based on the obtained compensation coefficient, and drive the light emitting element based on the compensated gray level.Type: GrantFiled: December 15, 2017Date of Patent: November 3, 2020Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Ho-seop Lee, Do-young Kwag, Tetsuya Shigeta, Seong-phil Cho
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Publication number: 20200312229Abstract: Disclosed is a display module. The display module includes a display panel including an inorganic light emitting device, a sweep electrode connected to at least one input pin, and a pulse width modulation (PWM) pixel circuit, and a driving unit configured to provide a sweep signal to the sweep electrode through the at least one input pin, in which the PWM pixel circuit includes a driving transistor, and provides a driving current having a pulse width corresponding to a data voltage to the inorganic light emitting device by changing a voltage of a gate terminal of the driving transistor according to the sweep signal applied through the sweep electrode, and a number of the at least one input pin varies depending on a size of the display panel.Type: ApplicationFiled: February 13, 2020Publication date: October 1, 2020Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jinho KIM, Sangmin SHIN, Tetsuya SHIGETA
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Publication number: 20200265777Abstract: A display panel includes a plurality of pixels arranged in a matrix, the plurality of pixels respectively including a plurality of sub pixels. The plurality of sub pixels respectively includes a light emitting element, and a PWM pixel circuit configured to control a light emitting duration of the light emitting element, based on a pulse width modulation (PWM) data voltage and a sweep voltage. A plurality of PWM pixel circuits included in the display panel are driven, for each of row lines of the plurality of pixels, in an order of a data setting period for setting the PWM data voltage and then a light emitting period in which the light emitting element emits light during a duration corresponding to the set PWM data voltage according to a change of the sweep voltage.Type: ApplicationFiled: December 31, 2019Publication date: August 20, 2020Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Tetsuya Shigeta, Jinho Kim, Sangyoung Park, Hoseop Lee
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Patent number: 10690318Abstract: A light emitting diode (LED) apparatus is provided. The LED apparatus includes: an LED layer including a plurality of LEDs corresponding to a plurality of sub-pixels; a phosphor layer which is stacked on a top of the LED layer and includes a phosphor corresponding to at least a part of the plurality of sub-pixels; and a filter layer which is stacked on a top of the phosphor layer and includes a plurality of color filters corresponding to the plurality of sub-pixels, and each of the plurality of color filters includes a plurality of absorption films which are spaced from one another at predetermined intervals to absorb external light.Type: GrantFiled: July 11, 2017Date of Patent: June 23, 2020Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yasuhiro Nishida, Dae-sik Kim, Tetsuya Shigeta, Ji-Hoon Kang
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Patent number: 10593251Abstract: A display panel including a plurality of pixel circuits is provided. Each of the plurality of pixel circuits includes a light emitting unit including a light emitting element; a control circuit configured to control a light emitting duration of the light emitting element based on an input end voltage; a first switching element connected between an input end and an output end of the control circuit; and a signal input unit including a second switching element and configured to transmit an input signal to the input end of the control circuit. The first switching elements of each of the plurality of pixel circuits are configured to simultaneously turn on or off.Type: GrantFiled: April 13, 2018Date of Patent: March 17, 2020Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Tetsuya Shigeta, Sang-young Park, Ho-seop Lee
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Patent number: 10504406Abstract: A pixel circuit of a display panel is provided, which includes a light emitting element configured to emit light in accordance with a drive current, a current source including a driving transistor connected to the light emitting element, and the current source is configured to provide the drive current having a different amplitude to the light emitting element in accordance with a level of a voltage applied to a gate terminal of the driving transistor, an amplitude setting circuit configured to apply a voltage having a different level to the gate terminal of the driving transistor, and a pulse width control circuit configured to control a duration of the drive current by controlling the voltage applied to the gate terminal of the driving transistor.Type: GrantFiled: February 20, 2018Date of Patent: December 10, 2019Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Tetsuya Shigeta, Sang-young Park, Ho-seop Lee
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Patent number: 10388204Abstract: A display apparatus and controlling method thereof are provided. The display apparatus includes a display including a plurality of light emitting components, a display driver that drives the display by applying a current to the plurality of light emitting components, a storage that stores current intensity information for each of a plurality of display modes providing different color gamuts, and a processor that acquires current intensity information corresponding to a present display mode, among the plurality of display modes, from the storage and controls the display driver to apply the current to the plurality of light emitting components based on the acquired current intensity information.Type: GrantFiled: April 28, 2017Date of Patent: August 20, 2019Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Tetsuya Shigeta, Do-young Kwag, Seong-phil Cho
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Publication number: 20190051804Abstract: A light emitting device package includes a light emitting device that generates light, a body frame including a cavity in which the light emitting device is mounted, a molding material that fills the cavity, and absorbing pigments that convert the light generated by the light emitting device. The absorbing pigments have a peak value within a wavelength range of 490 to 520 nm and a full width at half maximum (FWHM) of 40 to 70 nm.Type: ApplicationFiled: August 10, 2018Publication date: February 14, 2019Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sang Kyun IM, Tetsuya SHIGETA, Ho Seop LEE, Seong-Phil CHO
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Publication number: 20180301080Abstract: A display panel including a plurality of pixel circuits is provided. Each of the plurality of pixel circuits includes a light emitting unit including a light emitting element; a control circuit configured to control a light emitting duration of the light emitting element based on an input end voltage; a first switching element connected between an input end and an output end of the control circuit; and a signal input unit including a second switching element and configured to transmit an input signal to the input end of the control circuit. The first switching elements of each of the plurality of pixel circuits are configured to simultaneously turn on or off.Type: ApplicationFiled: April 13, 2018Publication date: October 18, 2018Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Tetsuya SHIGETA, Sang-young PARK, Ho-seop LEE
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Publication number: 20180293929Abstract: A pixel circuit of a display panel is provided, which includes a light emitting element configured to emit light in accordance with a drive current, a current source including a driving transistor connected to the light emitting element, and the current source is configured to provide the drive current having a different amplitude to the light emitting element in accordance with a level of a voltage applied to a gate terminal of the driving transistor, an amplitude setting circuit configured to apply a voltage having a different level to the gate terminal of the driving transistor, and a pulse width control circuit configured to control a duration of the drive current by controlling the voltage applied to the gate terminal of the driving transistor.Type: ApplicationFiled: February 20, 2018Publication date: October 11, 2018Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Tetsuya SHIGETA, Sang-young PARK, Ho-seop LEE
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Publication number: 20180245773Abstract: A light emitting diode (LED) apparatus is provided. The LED apparatus includes: an LED layer including a plurality of LEDs corresponding to a plurality of sub-pixels; a phosphor layer which is stacked on a top of the LED layer and includes a phosphor corresponding to at least a part of the plurality of sub-pixels; and a filter layer which is stacked on a top of the phosphor layer and includes a plurality of color filters corresponding to the plurality of sub-pixels, and each of the plurality of color filters includes a plurality of absorption films which are spaced from one another at predetermined intervals to absorb external light.Type: ApplicationFiled: July 11, 2017Publication date: August 30, 2018Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yasuhiro NISHIDA, Dae-sik KIM, Tetsuya SHIGETA, Ji-Hoon KANG