Patents Assigned to Everdisplay Optronics (Shanghai) Co., Ltd
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Patent number: 11258021Abstract: A display panel being bendable around a bending axis to form a bendable portion, includes a support film, a display module disposed on a side of the support film. An outer edge of the display module is distant from an outer edge along the first direction of the support film, to form a step portion between the outer edge of the display module and the outer edge of the support film. A polarizing layer and a touch layer are disposed on the other side, facing away the support film, of the display module. An outer edge of the polarizing layer and an outer edge of the touch layer are distant from the outer edge of the display module to form a step portion between the outer edge of the polarizing layer, the outer edge of the touch layer and the outer edge of the display module.Type: GrantFiled: October 10, 2019Date of Patent: February 22, 2022Assignee: Everdisplay Optronics (Shanghai) Co., LtdInventors: Jiajia Li, Run Lin, Xinyuan Wei, Xun Lao, Zhongchun Wang
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Publication number: 20220051599Abstract: The present disclosure provides a method and device for driving a display panel. The method includes steps of: presetting a mapping database of correspondence between each of first voltages and a respective one of image refresh rates; sending a refresh rate adjustment instruction to a timing controller; switching the image refresh rate from the first image refresh rate to the second image refresh rate according to the refresh rate adjustment instruction, and sending a voltage adjustment instruction to a power driving chip; obtaining the first voltage according to the voltage adjustment instruction and the mapping database; obtaining the pixel driving voltage according to the preset correspondence between the first voltage and the pixel driving voltage; and adjusting the display panel according to the pixel driving voltage to change the operating current of each pixel.Type: ApplicationFiled: July 22, 2021Publication date: February 17, 2022Applicant: Everdisplay Optronics (Shanghai) Co.,Ltd.Inventors: JehYen KANG, Xiangshu LI, Zhouhui XIA, Keitaro YAMASHITA
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Publication number: 20220051630Abstract: The present disclosure relates to the field of display technology, and provides driving methods of a display panel and a display device.Type: ApplicationFiled: August 10, 2021Publication date: February 17, 2022Applicant: Everdisplay Optronics (Shanghai) Co.,Ltd.Inventors: Fei SHEN, Xiangshu LI, Xiangyu JIANG, JehYen KANG, Shaodong MA, Keitaro YAMASHITA
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Publication number: 20220044628Abstract: The present disclosure provides a driving method of a display device and a display device. The driving method includes: generating and outputting a frame image signal to an organic light emitting device, wherein the frame image signal includes an active data region and a blank region based on a time sequence; in the active data region of the frame image signal, using a timing controller to write a data voltage into the gate of the thin film transistor, store it in a storage capacitor, and apply it to the organic light emitting device through the thin film transistor; and in response to reaching the blank region of the frame image signal as determined by the timing controller, changing the first voltage at the cathode of the organic light emitting device to compensate the operating current of the organic light emitting device.Type: ApplicationFiled: July 21, 2021Publication date: February 10, 2022Applicant: Everdisplay Optronics (Shanghai) Co.,Ltd.Inventors: Xiangshu LI, JehYen KANG, Fei SHEN, Keitaro YAMASHITA
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Patent number: 11227551Abstract: The present disclosure provides a driving method and system for an OLED display panel. The driving method for the OLED display panel includes: controlling a gate line driving circuit of the display panel for each frame image to sequentially output a scanning signal to each gate line of the display panel; and when the gate line driving circuit of the display panel starts to output the scanning signal to one gate line, timing from a starting scanning time of the same scanning gate line; and after the scanning time of the current scanning gate line reaches a preset fixed scanning time, controlling the gate line driving circuit of the display panel to stop outputting the scanning signal to the current scanning gate line. Therefore, the present disclosure does not need to change the gamma curve when the refresh frequency is changed, and screen flicker will not occur, and a seamless dynamic refresh switching of the display panel is realized.Type: GrantFiled: April 21, 2020Date of Patent: January 18, 2022Assignee: Everdisplay Optronics (Shanghai) Co., LtdInventors: Keitaro Yamashita, Shaodong Ma, Shanglong Wang, Fei Shen
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Patent number: 11222909Abstract: The present disclosure discloses a common-gate transistor, a pixel circuit, a pixel structure and a display panel, wherein the common-gate transistor includes: a first electrode region, a second electrode region and a third electrode region which are independently disposed, and a common gate region that is in contact with the first electrode region, the second electrode region, and the third electrode region; the common gate region, the first electrode region, and the second electrode region constitute a first transistor; and the common gate region, the first electrode region, and the third electrode region constitute a second transistor.Type: GrantFiled: May 11, 2018Date of Patent: January 11, 2022Assignee: Everdisplay Optronics (Shanghai) Co., LtdInventor: Xingyu Zhou
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Publication number: 20220005411Abstract: The present disclosure provides a pixel compensation circuit and a display device including a first switching component configured to switch an electric current path between a data signal and a first node in response to a scanning signal; a third transistor configured to switch an electric current path between a second node and the first node in response to a power positive voltage signal; a fourth transistor configured to switch an electric current path between the power positive voltage signal and a third node in response to a voltage signal of the first node; a first capacitor coupled between an enable signal and the first node; a second capacitor coupled between the second node and the power positive voltage signal; and a light emitting diode having an anode coupled to the third node and a cathode coupled to a power negative voltage signal.Type: ApplicationFiled: January 10, 2019Publication date: January 6, 2022Applicant: Everdisplay Optronics (Shanghai) Co.,Ltd.Inventors: Huannan WANG, Gang LIU
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Patent number: 11210999Abstract: A driving method includes: determining a starting luminance LS of a to-be-adjusted frame image; determining an average luminance LAVE(n) of the to-be-adjusted frame image during a nth duty period; determining a reference luminance flow rate ?L that indicates a current change rate of a storage capacitor storing a data signal for a display element; determining a time length TF of a reference frame image; determining a number k of black strips in the to-be-adjusted frame image; calculating a duty ratio of a pulse driving signal of the to-be-adjusted frame image during the nth duty period based on the starting luminance LS, the average luminance LAVE(n), the reference luminance flow rate ?L, the time length TF, and the number k of the black strips; and driving to display the to-be-adjusted frame image by the adjusted pulse driving signal.Type: GrantFiled: September 22, 2020Date of Patent: December 28, 2021Assignee: Everdisplay Optronics (Shanghai) Co., LtdInventors: Keitaro Yamashita, Shaodong Ma, Shanglong Wang, Fei Shen
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Patent number: 11164528Abstract: A gate driving circuit, a TFT array substrate and a display device are provided by the present disclosure, wherein five switches are provided in the gate driving circuit and a control signal is used to directly or indirectly control the five switches, and further control scanning range of the gate driving circuit.Type: GrantFiled: April 21, 2020Date of Patent: November 2, 2021Assignee: Everdisplay Optronics (Shanghai) Co., LtdInventors: Fengqing Xu, Yongliang Qin, Qiujian Tao
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Patent number: 11158249Abstract: The present disclosure provides a display driving device, method and an OLED display device, and the display driving device includes: an interface module, configured to receive image data of a display chip and sending a first scanning signal in each of frame periods; a frame buffer, configured to send a buffer signal after receiving the first scanning signal from the interface module; a timing controller, configured to send a second scanning signal to the display panel according to the buffer signal sent by the frame buffer; in response to the display driving device is switched from a screen self-refresh mode to a vertical synchronization mode, the delay time between the second scanning signal and the buffer signal gradually decreases, one frame period by one frame period, to zero or gradually increases, one frame period by one frame period, to duration of one frame period.Type: GrantFiled: November 6, 2020Date of Patent: October 26, 2021Assignee: Everdisplay Optronics (Shanghai) Co., LtdInventors: Keitaro Yamashita, Chungche Tsou, Yinan Liang, Shaodong Ma
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Patent number: 11158238Abstract: The present disclosure relates to the technical field of display devices, and provides a display panel and a driving method thereof. The display panel includes: a plurality of data lines, each of the data lines including a first segment line and a second segment line, every adjacent n+1 of the data lines forming a data line group, each data line group including a first data line having a connection line and n second data lines; a DEMUX circuit including n gating control lines, each of the gating control lines being in turn connected to the first segment line of the second data lines in each data line group, and the first segment line of each of the data lines in each data line group being connected to each other; and a driving IC connected to the second segment line of each of the data lines and the DEMUX circuit.Type: GrantFiled: November 19, 2020Date of Patent: October 26, 2021Assignee: Everdisplay Optronics (Shanghai) Co., LtdInventors: Keitaro Yamashita, Lina Xiao
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Patent number: 11043160Abstract: The disclosure discloses a common-gate transistor, a pixel circuit, a driving method and a display, including: a first doped region, a second doped region, a third doped region, a fourth doped region and a fifth doped region; the second doped region, the third doped region, the fourth doped region, and the fifth doped region are indirectly communicated through the first doped region, and the second doped region, the third doped region, and the fourth doped region, the fifth doped region and the first doped region are hetero-doped respectively. The two transistors in the common-gate transistor share one gate doped region, i.e., the first doped region, which can not only save one gate doped region, but also can make the gates of the two transistors have the same electrical parameters, and then the cascode effect of the two transistors is more ideal.Type: GrantFiled: May 21, 2018Date of Patent: June 22, 2021Assignee: Everdisplay Optronics (Shanghai) Co., Ltd.Inventor: Xingyu Zhou
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Publication number: 20210173268Abstract: The present disclosure relates to the field of display technology, and provides a method for repairing broken line, an array substrate, and an active matrix display device.Type: ApplicationFiled: December 3, 2020Publication date: June 10, 2021Applicant: Everdisplay Optronics (Shanghai) Co.,Ltd.Inventors: Keitaro YAMASHITA, Shanglong WANG, Ruili WANG, Chihkang CHEN
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Patent number: 11032921Abstract: A flexible display device includes a flexible display panel including a first side and a second side, wherein the first side is opposite to the second side; a roll-up mechanism including a master shaft for rolling up and unrolling the flexible display panel, wherein the first side of the flexible display panel is fixed to the master shaft; a support mechanism including a plurality of supporting members, wherein the supporting members are articulated each other; wherein the supporting members are stored under the flexible display panel, when the flexible display panel is rolled up; wherein the supporting members are leaned to a backside surface of the flexible display panel, when the flexible display panel is unrolled.Type: GrantFiled: December 16, 2019Date of Patent: June 8, 2021Assignee: Everdisplay Optronics (Shanghai) Co., LtdInventor: HuanYu Huang
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Publication number: 20210158743Abstract: The present disclosure relates to the technical field of display devices, and provides a display panel and a driving method thereof. The display panel includes: a plurality of data lines, each of the data lines including a first segment line and a second segment line, every adjacent n+1 of the data lines forming a data line group, each data line group including a first data line having a connection line and n second data lines; a DEMUX circuit including n gating control lines, each of the gating control lines being in turn connected to the first segment line of the second data lines in each data line group, and the first segment line of each of the data lines in each data line group being connected to each other; and a driving IC connected to the second segment line of each of the data lines and the DEMUX circuit.Type: ApplicationFiled: November 19, 2020Publication date: May 27, 2021Applicant: Everdisplay Optronics (Shanghai) Co.,Ltd.Inventors: Keitaro YAMASHITA, Lina XIAO
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Publication number: 20210142724Abstract: The present disclosure provides a display driving device, method and an OLED display device, and the display driving device includes: an interface module, configured to receive image data of a display chip and sending a first scanning signal in each of frame periods; a frame buffer, configured to send a buffer signal after receiving the first scanning signal from the interface module; a timing controller, configured to send a second scanning signal to the display panel according to the buffer signal sent by the frame buffer; in response to the display driving device is switched from a screen self-refresh mode to a vertical synchronization mode, the delay time between the second scanning signal and the buffer signal gradually decreases, one frame period by one frame period, to zero or gradually increases, one frame period by one frame period, to duration of one frame period.Type: ApplicationFiled: November 6, 2020Publication date: May 13, 2021Applicant: Everdisplay Optronics (Shanghai) Co.,Ltd.Inventors: Keitaro YAMASHITA, Chungche TSOU, Yinan LIANG, Shaodong MA
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Publication number: 20210142723Abstract: A driving method includes: determining a starting luminance LS of a to-be-adjusted frame image; determining an average luminance LAVE(n) of the to-be-adjusted frame image during a nth duty period; determining a reference luminance flow rate ?L that indicates a current change rate of a storage capacitor storing a data signal for a display element; determining a time length TF of a reference frame image; determining a number k of black strips in the to-be-adjusted frame image; calculating a duty ratio of a pulse driving signal of the to-be-adjusted frame image during the nth duty period based on the starting luminance LS, the average luminance LAVE(n), the reference luminance flow rate ?L, the time length TF, and the number k of the black strips; and driving to display the to-be-adjusted frame image by the adjusted pulse driving signal.Type: ApplicationFiled: September 22, 2020Publication date: May 13, 2021Applicant: Everdisplay Optronics (Shanghai) Co.,Ltd.Inventors: Keitaro YAMASHITA, Shaodong MA, Shanglong WANG, Fei SHEN
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Patent number: 10943528Abstract: A pixel circuit, a driving method and a display, comprising: a compensation circuit (1) being electrically connected to a driving circuit (2) via a first node (N1); an external power supply (ELVDD), the driving circuit (2) and a light-emitting diode (EL4) being connected in series; a capacitor (C3) being located between the first node (N1) and the external power supply (ELVDD), wherein the compensation circuit (1) is used for setting the voltage of the first node (N1) to a first voltage (Vdata+VthT1) by means of a compensation transistor; the capacitor (C3) is used for maintaining the voltage of the first node (N1) as the first voltage (Vdata+VthT1); the driving circuit (2) externally connects a first control signal (En) to generate a driving current (IEL4) to drive the light-emitting diode (EL4) to emit light; and a driving transistor in the driving circuit (2) and the compensation transistor are common-gate transistors.Type: GrantFiled: May 18, 2018Date of Patent: March 9, 2021Assignee: Everdisplay Optronics (Shanghai) Co., LtdInventor: Xingyu Zhou
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Publication number: 20210066657Abstract: The present invention provides a display panel including a through-hole, a non-display area surrounding the through-hole and a display area; the non-display area includes a substrate, an organic film layer structure, an inorganic film layer structure and a light-emitting functional layer; the organic film layer structure includes a plurality of organic thin film layers; the inorganic film layer structure includes at least one annular first through-groove surrounding the through-hole; the organic film layer structure includes at least one annular second through-groove surrounding the through-hole; the first through-grooves correspond to the second through-grooves by way of one to one, respectively; the width of the first through-groove is smaller than the width of the second through-groove at the organic thin film layer that is in contact with the inorganic film layer structure in the organic film layer structure; the light-emitting functional layer is disconnected at the first through-grooves.Type: ApplicationFiled: August 17, 2020Publication date: March 4, 2021Applicant: Everdisplay Optronics (Shanghai) Co.,Ltd.Inventors: Ting CHEN, Mei CHEN
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Publication number: 20210050560Abstract: A flexible display panel includes a flexible substrate, a buffer layer, a first insulating layer including at least two sub insulating layers, and an organic light-emitting structure which are laminated, the display panel further includes a conductive layer, and the conductive layer is located between the flexible substrate and the organic light-emitting structure.Type: ApplicationFiled: June 25, 2019Publication date: February 18, 2021Applicant: Everdisplay Optronics (Shanghai) Co.,Ltd.Inventor: Sheng GAO