Electroluminescent Patents (Class 345/76)
  • Patent number: 12142226
    Abstract: An electronic device includes a display panel including pixels respectively connected to scan lines, scan stages corresponding to the scan lines, where each of the scan stages receives a carry signal, and outputs a scan signal, masking circuits electrically connected to some of the scan stages, respectively, where each of the masking circuits outputs a masking carry signal in response to a masking signal and the scan signal, and transmission circuits electrically connected to others of the scan stages, respectively, where each of the transmission circuits outputs the scan signal output from a corresponding scan stage among the scan stages. A j-th (j is an integer greater than 1) scan stage among the scan stages receives one of the scan signal output from a (j?1)-th scan stage and the masking carry signal as the carry signal.
    Type: Grant
    Filed: September 6, 2023
    Date of Patent: November 12, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Heerim Song, Gyungsoon Park, Jinseok Jeong
  • Patent number: 12144226
    Abstract: A display device includes a substrate including a display area and a pad area; a thin film transistor in the display area; a light emitting film layer on the thin film transistor; an encapsulation layer on the light emitting film layer; a touch buffer layer on the encapsulation layer; a bridge, first touch electrodes and second touch electrodes disposed on the touch buffer layer; a touch insulating film disposed between the bridge and the first touch electrodes and the second touch electrodes; a touch pad in the pad area; a touch sensing line connected to the first touch electrodes; and a touch driving line connected to the second touch electrodes, wherein at least one of the touch sensing line and the touch driving line is provided on a side surface of the encapsulation layer.
    Type: Grant
    Filed: July 8, 2021
    Date of Patent: November 12, 2024
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Yangsik Lee, JiHyun Jung, SuChang An, JaeGyun Lee, Ruda Rhe
  • Patent number: 12142070
    Abstract: An electronic device includes a first substrate, a second substrate, a light-impermeable layer, a light-emitting unit, and a photosensor. The second substrate is opposite to the first substrate. The light-impermeable layer is disposed between the first substrate and the second substrate and includes a first opening and a second opening. The light-emitting unit is disposed between the first substrate and the second substrate and overlapped with the first opening. The photosensor is disposed on the first substrate and overlapped with the second opening.
    Type: Grant
    Filed: November 10, 2022
    Date of Patent: November 12, 2024
    Assignee: Innolux Corporation
    Inventors: Chandra Lius, Kuan-Feng Lee, Tsung-Han Tsai, Chung-Wen Yen, Chiu-Lien Yang
  • Patent number: 12142221
    Abstract: An organic light-emitting diode (OLED) display is disclosed. In one aspect, the OLED display includes a lower substrate including a display area and a non-display area surrounding the display area, wherein a plurality of pixels are formed in the display area. The OLED display also includes an embedded circuit formed in the configured to apply a plurality of signals to the pixels, and an initialization wiring formed in the non-display area and configured to apply an initialization voltage to each of the pixels. The initialization circuit is formed in a layer so as to at least partially overlap with the area of the embedded circuit.
    Type: Grant
    Filed: July 18, 2023
    Date of Patent: November 12, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Chang-Soo Pyon
  • Patent number: 12142193
    Abstract: A display apparatus includes pixels. Each of the pixels includes a first node controller applying a data voltage to a first node, a second node controller shifting a voltage of a second node from a low level driving voltage to an on pulse voltage, a third node controller applying a reference voltage having an on level to a third node during a first period in one frame and applying the low level driving voltage to the third node during a second period, a driving transistor being on-duty-driven during the first period and off-duty-driven during the second period, and a light emitting device including an anode electrode connected to the second electrode of the driving transistor and a cathode electrode. The light emitting device emits light responsive to a constant current applied from the driving transistor during the first period and does not emit light during the second period.
    Type: Grant
    Filed: October 4, 2022
    Date of Patent: November 12, 2024
    Assignee: LG Display Co., Ltd.
    Inventors: Yong Chul Kwon, Jong Min Park, Joon Hee Lee
  • Patent number: 12144202
    Abstract: According to one embodiment, in a manufacturing method of a display device, a first lower electrode, a second lower electrode and a third lower electrode are formed. A rib having first aperture overlapping the first lower electrode, a second aperture overlapping the second lower electrode, and a third aperture overlapping the third lower electrode is formed. A first thin film including a first light emitting layer is formed on the first lower electrode. A second thin film including a second light emitting layer is formed on the second lower electrode. An area of the first aperture is larger than an area of the second aperture.
    Type: Grant
    Filed: August 2, 2023
    Date of Patent: November 12, 2024
    Assignee: JAPAN DISPLAY INC.
    Inventors: Yuko Matsumoto, Kaichi Fukuda
  • Patent number: 12136394
    Abstract: An electronic device includes a display having multiple regions of pixels. Each pixel includes a diode that emits light based on an amount of current through the diode and a transistor that controls the amount of current flowing through the diode. The electronic device includes driver-integrated circuitry that reduces hysteresis in a first transistor of a first pixel of a region of pixels, settles a threshold voltage of the first transistor, applies a test voltage to the first transistor, and senses a current across the first transistor. The electronic device includes processing circuitry that determines a predetermined voltage based on the current and a predetermined current-voltage relationship determined at an initial temperature, determines a voltage difference between the test voltage and the predetermined voltage, and applies the predetermined voltage and the voltage difference to a second transistor of a second pixel of the region of pixels.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: November 5, 2024
    Assignee: Apple Inc.
    Inventors: Hyunwoo Nho, Myungjoon Choi, Hyunsoo Kim, Mohammad Ali Jangda, Jie Won Ryu, Shiping Shen, Kingsuk Brahma, Chaohao Wang, Wei H. Yao, Alex H. Pai
  • Patent number: 12136381
    Abstract: A display device includes a display area which displays an image, and a non-display area disposed around the display area and including a pad part. The display area includes pixels of a first pixel row which are pixels arranged in a first direction along the first pixel row, pixels of a second pixel row, which are pixels arranged in the first direction along the second pixel row next to the first pixel row, and pixel circuits of a first circuit row which are pixel circuits arranged in the first direction along the first circuit row, where the pixel circuits of the first circuit row are electrically connected to the pixels of the first pixel row, respectively. The first pixel row and the first circuit row are spaced apart from each other with the second pixel row interposed therebetween.
    Type: Grant
    Filed: June 17, 2022
    Date of Patent: November 5, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jun Ki Jeong, Hyun Joon Kim, Kye Uk Lee, Sang Jin Jeon, Jung Hwan Hwang
  • Patent number: 12131701
    Abstract: The present application discloses a display panel, an integrated chip and a display apparatus. The display panel includes: a first display area and a second display area; and pixel circuits including first pixel circuits and second pixel circuits, wherein the first pixel circuits are configured to provide driving currents to light emitting elements of the first display area, and the second pixel circuits are configured to provide driving currents to light emitting elements of the second display area, the pixel circuits receive a bias adjustment signal, the bias adjustment signal includes a first bias adjustment signal and a second bias adjustment signal, the first pixel circuits receive the first bias adjustment signal, and the second pixel circuits receive the second bias adjustment signals, a voltage value of the first bias adjustment signal is V1, and a voltage value of the second bias adjustment signal is V2, wherein V1?V2.
    Type: Grant
    Filed: January 30, 2023
    Date of Patent: October 29, 2024
    Assignee: XIAMEN TIANMA DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Jieliang Li, Ping An, Guoxing Chen, Yuping Xu
  • Patent number: 12133407
    Abstract: In non-limiting example embodiments, an electroluminescent device may include a lower structure including an emission area, and an encapsulation structure located on the lower structure. The lower structure may include a window. The window may be a light transmitting region or a notch. The light transmitting region may be spaced apart from the emission area and completely or partially surrounded by the emission area in a plan view. The notch may be formed at one side of the lower structure and recessed inward in a plan view such that one side of the emission area substantially conforms to the notch.
    Type: Grant
    Filed: August 19, 2021
    Date of Patent: October 29, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Myoung Seo Park
  • Patent number: 12133449
    Abstract: The present disclosure provides a display substrate and a display device, and belongs to the field of display technology. The display substrate provided by the present disclosure has a display area and a peripheral area surrounding the display area, and includes a substrate; a plurality of pixel circuits on the substrate and in the display area; and a plurality of dummy pixel circuits on the substrate and in the peripheral area; wherein the number of transistors in each dummy pixel circuit is smaller than the number of transistors in each pixel circuit. Because the number of the transistors in the dummy pixel circuit is smaller than the number of the transistors in the pixel circuit, space occupied by the dummy pixel circuit in the peripheral area can be reduced, thereby facilitating realization of a display device with a narrow bezel.
    Type: Grant
    Filed: October 21, 2020
    Date of Patent: October 29, 2024
    Assignees: Chengdu BOE Optoelectronics Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yupeng He, Yang Zhou, Yao Huang, Xin Zhang, Yu Wang
  • Patent number: 12131680
    Abstract: A display apparatus includes a display panel and a display panel driver. The display panel includes a first display area having a first pixel structure and a second display area having a second pixel structure different from the first pixel structure. The display panel driver drives the display panel in a first mode when an image complexity of input image data corresponding to a determination area which includes the first display area is greater than a threshold value and to drive the display panel in a second mode different from the first mode when the image complexity of the input image data is less than or equal to the threshold value.
    Type: Grant
    Filed: October 13, 2022
    Date of Patent: October 29, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Deokhwa Woo, Myungwoo Lee
  • Patent number: 12125425
    Abstract: A pixel may include a light emitting element; a data write transistor that writes a data voltage; a driving transistor that applies a driving current to the light emitting element based on the data voltage; a hold capacitor including a first electrode to which a first power supply voltage is applied, and a second electrode electrically connected to a first node; a storage capacitor including a first electrode electrically connected to the first node, and a second electrode electrically connected to a control electrode of the driving transistor; at least one polysilicon thin film transistor; and at least one oxide thin film transistor. The at least one oxide thin film transistor may be disposed between the at least one polysilicon thin film transistor and the hold capacitor, or between the at least one polysilicon thin film transistor and the storage capacitor.
    Type: Grant
    Filed: October 3, 2022
    Date of Patent: October 22, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Junhyun Park, Jangmi Kang, Minjae Jeong
  • Patent number: 12124122
    Abstract: A display device includes a light emitter located on a first light-transmissive substrate, a second light-transmissive substrate facing the first light-transmissive substrate, a first light-shielding layer located on the first light-transmissive substrate and located away from the light emitter, a second light-shielding layer located on the second light-transmissive substrate and located away from a first portion facing the first light-shielding layer, a first light output section between the first light-shielding layer and the first portion and switchable between a transmissive state and a scattering state, and a second light output section between the second light-shielding layer and a second portion located on the first light-transmissive substrate and facing the second light-shielding layer. The second light output section is switchable between the transmissive state and the scattering state.
    Type: Grant
    Filed: August 2, 2021
    Date of Patent: October 22, 2024
    Assignee: KYOCERA CORPORATION
    Inventor: Masaya Tamaki
  • Patent number: 12118927
    Abstract: An electronic apparatus includes a first light emitting array and a second light emitting array. The first light emitting array includes first light-emitting units disposed in a first region and a first sub region. The second light emitting array is disposed adjacent to the first light emitting array. The second light emitting array includes second light-emitting units disposed in a second region and a second sub region. The difference between the average brightness in the first region and the average brightness in the second region is in a range from 0% to 20%, and the difference between the average brightness in the first sub region and the average brightness in the second sub region is less than the difference between the average brightness in the first region and the average brightness in the second region.
    Type: Grant
    Filed: July 26, 2023
    Date of Patent: October 15, 2024
    Assignee: INNOLUX CORPORATION
    Inventors: Chi-Liang Chang, Yi-Hua Hsu
  • Patent number: 12117743
    Abstract: An exposure head includes a light emitting board group, a first lens array, and a second lens array. The light emitting board group disposes a plurality of light emitting boards each including a plurality of light emitting elements disposed side by side in a second direction intersecting with the first direction. The plurality of light emitting boards are disposed along the second direction and alternately in the first direction. The light emitting board group includes a first light emitting board group and a second light emitting board group. The first lens array condenses light emitted from the plurality of light emitting elements disposed on the first light emitting board group onto the surface of the image bearing member. The second lens array condenses light emitted from the plurality of light emitting elements disposed on the second light emitting board group onto the surface of the image bearing member.
    Type: Grant
    Filed: December 8, 2022
    Date of Patent: October 15, 2024
    Assignee: Canon Kabushiki Kaisha
    Inventor: Shunsaku Kondo
  • Patent number: 12118924
    Abstract: A display device includes pixels, and a power supply to supply a first initialization voltage to the pixels through a first initialization power line, and to supply a second initialization voltage to the pixels through a second initialization power line. At least one of the pixels includes a first transistor, a second transistor, a third transistor, and a light emitting element.
    Type: Grant
    Filed: August 8, 2023
    Date of Patent: October 15, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kyong Hwan Oh, Jin Tae Jeong, Ji Hyun Ka, Won Kyu Kwak, Hyung Jun Park, Chang Soo Pyon, Ji Eun Lee, Hai Jung In, Won Mi Hwang
  • Patent number: 12118906
    Abstract: A method for sensing a display panel includes: sensing an electrical characteristic parameter of a driving transistor of a pixel circuit of a sub-pixel in an X-th row in a blank stage between an N-th frame and an (N+1)-th frame, wherein X is a random number, and both N and X are positive integers.
    Type: Grant
    Filed: May 28, 2021
    Date of Patent: October 15, 2024
    Assignees: Hefei BOE Joint Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Xiaolong Wei, Fei Yang, Song Meng, Jingbo Xu, Jianbo Xian
  • Patent number: 12120914
    Abstract: A display device and a manufacturing method thereof are disclosed. The display device includes a base substrate and at least one pixel circuit provided on the base substrate, and the pixel circuit includes a driving transistor, a first transistor, and a second transistor; the driving transistor includes a control electrode, a first electrode, and a second electrode; the first transistor includes a first active region, the second transistor includes a second active region, the driving transistor includes a fourth active region, at least one of a doping concentration of the first active region and a doping concentration of the second active region is greater than a doping concentration of the fourth active region.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: October 15, 2024
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Dachao Li, Shengji Yang, Chen Xu
  • Patent number: 12120930
    Abstract: A display device includes: a plurality of pixels each including a driving thin film transistor and a storage capacitor, wherein each of the pixels further includes: a driving semiconductor layer including a driving channel region, a driving source region, and a driving drain region; a first electrode layer, a portion of the first electrode layer overlapping the driving channel region; a second electrode layer overlapping the first electrode layer; a node connection line having a first side connected to the first electrode layer; a pixel electrode overlapping the first electrode layer and the second electrode layer; and a shielding layer between the first electrode layer and the pixel electrode and overlapping the first electrode layer, the node connection fine, and the pixel electrode.
    Type: Grant
    Filed: July 14, 2023
    Date of Patent: October 15, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seungkyu Lee, Taehoon Kwon, Byungsun Kim
  • Patent number: 12118937
    Abstract: A display device may include a pixel, an emission control driver, and a timing controller. The emission control driver may supply an emission control signal set for controlling emission periods of the pixel. The timing controller may receive a received bit stream that includes a first bit set and a second bit set, may determine a first duty ratio of the emission control signal set using bits of the first bit set without using any bit of the second bit set. The first bit set may include at least two bits. The second bit set may include at least one bit. The emission control signal set may control the pixel to operate according to the first duty ratio for each frame of a first frame group.
    Type: Grant
    Filed: July 3, 2023
    Date of Patent: October 15, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jeong Min Sung, Woo Chul Kim, Weon Jun Choe
  • Patent number: 12120931
    Abstract: A display apparatus includes: a first pixel circuit on the substrate and including a first driving thin-film transistor and a first storage capacitor electrically connected to the first driving thin-film transistor; a second pixel circuit adjacent to the first pixel circuit and including a second driving thin-film transistor and a second storage capacitor electrically connected to the second driving thin-film transistor; a first initialization voltage line electrically connected to the first pixel circuit and the second pixel circuit; a second initialization voltage line electrically connected to the first initialization voltage line; and a driving voltage line between the first pixel circuit and the second pixel circuit, wherein a channel area of the first driving thin-film transistor or a channel area of the second driving thin-film transistor is between the second initialization voltage line and the driving voltage line.
    Type: Grant
    Filed: April 12, 2021
    Date of Patent: October 15, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Nuree Um, Mihae Kim, Minjeong Kim, Hyungjun Park, Junyong An
  • Patent number: 12112704
    Abstract: A pixel circuit is disclosed that includes first through sixth transistors, first and second capacitors, and a light emitting element. A gate electrode of the second transistor receives a first gate signal. A gate electrode of the third transistor receive a second gate signal. Gate electrodes of each of the fourth and fifth transistors receive a third gate signal. A gate electrode of the sixth transistor receives an emission signal. First electrodes of the first transistor and the first capacitor each receive a first power supply voltage. A cathode electrode of the light emitting element receives a second power supply voltage. A first electrode of the fourth transistor receives an initialization voltage.
    Type: Grant
    Filed: November 3, 2023
    Date of Patent: October 8, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yeonkyung Kim, Kwihyun Kim, Dongwoo Kim
  • Patent number: 12112707
    Abstract: A pixel circuit includes a driving circuit, a first control circuit and a second control circuit. The driving circuit is configured to receive a data signal in response to a scan signal, and generate, in response to a first enable signal, a driving signal according to a first voltage and the data signal. The first control circuit is configured to: receive a first input signal in response to a first control signal, and transmit a third input signal in response to the first input signal; and receive a second input signal in response to a second control signal, and transmit a second enable signal in response to the second input signal. The second control circuit is configured to transmit the driving signal to an element to be driven in response to one of the third input signal and the second enable signal.
    Type: Grant
    Filed: April 27, 2023
    Date of Patent: October 8, 2024
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Li Xiao, Haoliang Zheng, Hao Chen, Minghua Xuan, Dongni Liu, Seungwoo Han, Liang Chen, Jiao Zhao, Xue Dong
  • Patent number: 12106706
    Abstract: A pixel of a display device includes a first transistor including a top gate coupled to a first node, a first terminal, a second terminal coupled to a second node, and a bottom gate, a second transistor including a gate coupled to a writing signal line, a first terminal coupled to a data line, and a second terminal coupled to the first node, a storage capacitor coupled between the first node and the second node, a light emitting element coupled between the second node and a second power supply voltage line, and a seventh transistor including a gate coupled to an initialization signal line, a first terminal coupled to a bias voltage line, and a second terminal coupled to the bottom gate.
    Type: Grant
    Filed: July 20, 2023
    Date of Patent: October 1, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Minjae Jeong, Jangmi Kang, Hyeongseok Kim, Junhyun Park, Mukyung Jeon
  • Patent number: 12106704
    Abstract: An electronic device is provided. The electronic device includes an integrated driver board and at least one semiconductor unit substrate. The integrated driver board includes a circuit board, a data drive circuit, and a scanning drive circuit. The data drive circuit and the scanning drive circuit are disposed on the circuit board. The at least one semiconductor unit substrate is coupled to the data drive circuit and the scanning drive circuit.
    Type: Grant
    Filed: March 22, 2023
    Date of Patent: October 1, 2024
    Assignee: Innolux Corporation
    Inventors: Yu-Hsin Feng, Yu-Tse Lu, Ming-Chi Weng
  • Patent number: 12106708
    Abstract: The disclosure describes various aspects of backplanes, including unit cells, architectures, and operations. In an aspect, a backplane unit cell is described that includes first and second switches, a storage element, a comparator, a source (e.g., a current or voltage source), where the source generates a drive signal to control light emission of a selected one of the light emitting elements in a display, and where the drive signal is based on a power signal selected by the second switch. In another aspect, a device is described that includes a backplane configured in an active matrix topology including multiple data columns and multiple row selects; and a set of electrical contacts associated with the active matrix topology and configured to electrically couple the backplane with the display, the display having multiple light emitting elements configured in a passive matrix topology. Methods of operation of the backplane are also described.
    Type: Grant
    Filed: July 24, 2023
    Date of Patent: October 1, 2024
    Assignee: GOOGLE LLC
    Inventor: Gang He
  • Patent number: 12101885
    Abstract: A server motherboard includes a protective film, a substrate, and a power supply circuit. An equivalent electrical parameter of the protective film changes as a shape of the protective film changes. The shape changes when a temperature of the server mother board is greater than a predetermined temperature. A portion of at least one side surface of the substrate is covered by the protective film. The power supply circuit is electrically connected to the protective film and configured to detect the equivalent electrical parameter of the protective film. The power supply circuit stops outputting a power supply voltage to the substrate when a change of the equivalent electrical parameter is detected.
    Type: Grant
    Filed: September 14, 2021
    Date of Patent: September 24, 2024
    Assignee: LENOVO (BEIJING) LIMITED
    Inventor: Yongbin Hu
  • Patent number: 12101980
    Abstract: A transparent display panel and a transparent display device including the same are disclosed. In a transparent display panel, a VSS voltage line does not surround an outer periphery of a display region. Rather, upper and lower VSS voltage lines respectively disposed on upper and lower sides to the display region are electrically connected to each other via at least one VSS voltage connection line extending across the display region. Thus, left and right non-transparent and thick VSS voltage lines disposed on the left and right sides to the display region may be omitted. Thus, a transparent region of the transparent display panel and a bezel of a transparent display device may be increased or maximized or the bezel thereof may be made slim.
    Type: Grant
    Filed: December 27, 2022
    Date of Patent: September 24, 2024
    Assignee: LG Display Co., Ltd.
    Inventors: Euitae Kim, Changsoo Kim, Kiseob Shin, Soyi Lee
  • Patent number: 12099270
    Abstract: A display device is provided and includes display panel including first substrate, lower electrode on first substrate, lower alignment layer with first alignment direction on lower electrode, second substrate, upper electrode on second substrate, upper alignment layer with first alignment direction on upper electrode, and liquid crystalline polymers with striped structure and liquid crystal molecules which are aligned in first alignment direction, and which are disposed between first and second substrates; light source unit disposed at side of display panel and configured to emit incident light which is not polarized; and light guided structure disposed between side of display panel and light source unit, wherein light source unit is disposed in parallel to first alignment direction and light which is emitted from display panel is polarized in first alignment direction.
    Type: Grant
    Filed: December 13, 2023
    Date of Patent: September 24, 2024
    Assignee: Japan Display Inc.
    Inventors: Kentaro Okuyama, Akira Sakaigawa
  • Patent number: 12101982
    Abstract: A pixel structure, a driving method thereof, a display panel, and a display apparatus are provided. The pixel structure includes: a plurality of pixel rows and a plurality of pixel columns. Each pixel row includes: sub-pixels of four different colors. The plurality of pixel columns include: a plurality of first pixel columns and a plurality of second pixel columns arranged alternately. Each of the first pixel columns includes: sub-pixels of three of the four different colors. Each of the second pixel columns includes: sub-pixels of another color other than the three of the four different colors.
    Type: Grant
    Filed: April 27, 2021
    Date of Patent: September 24, 2024
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Zhijian Zhu, Pengcheng Lu, Chenyu Chen, Shengji Yang, Xiaochuan Chen, Yan Sun, Tiankuo Shi, Xiaomang Zhang, Yuanlan Tian, Dacheng Zhang
  • Patent number: 12094394
    Abstract: A gate driver includes a carry signal generating circuit and a shift register circuit. The carry signal generating circuit receives a vertical start signal and outputs first and second carry signals. The shift register circuit receives the first and second carry signals and outputs a first stage first carry signal, a first stage second carry signal and a first stage gate output signal. The carry signal generating circuit includes a first carry generator generating the first carry signal and a second carry generator generating the second carry signal. The shift register circuit includes a first stage first carry generator generating the first stage first carry signal, a first stage second carry generator generating the first stage second carry signal and a first stage output buffer outputting the first stage gate output signal.
    Type: Grant
    Filed: December 20, 2022
    Date of Patent: September 17, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventor: Hai-Jung In
  • Patent number: 12094411
    Abstract: Disclosed is a driving method for display unit, a display panel and a display device, a reset circuit is formed by a reset signal, a charging circuit is formed by a charging signal, and a light emitting circuit is formed by a light emitting signal, that is, the circuit in the display device is multiplexed by each control signal, so that it does not need to design a circuit for each function to realize the driving of the display unit, solving the complex problem of driving the display unit in the relevant technology.
    Type: Grant
    Filed: December 30, 2022
    Date of Patent: September 17, 2024
    Assignees: CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD., HKC CORPORATION LIMITED
    Inventors: Mancheng Zhou, Rongrong Li
  • Patent number: 12094425
    Abstract: A driving device of an electroluminescent display apparatus includes a pixel line determiner selecting a representative pixel line, disposed at a position at which an accumulation stress caused by an input image is largest, from among all pixel lines, a first sensing & driving circuit pre-sensing pixels of the representative pixel line for each color, an over driving control (ODC) controller selecting a color-based sample pixel characteristic value from among pixel characteristic values of the representative pixel line obtained through the pre-sensing and controlling a sensing priority of each color, based on a relative magnitude of a variation amount of the color-based sample pixel characteristic value, a second sensing & driving circuit performing ODC sensing on color pixels of all pixel lines, based on the sensing priority, and a compensation value generator updating compensation values of the color pixels, based on pixel characteristic values of the color pixels obtained through the ODC sensing, w
    Type: Grant
    Filed: September 22, 2023
    Date of Patent: September 17, 2024
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Moo Kyoung Hong, Sin Kyun Park
  • Patent number: 12087247
    Abstract: A driving method includes driving a display panel at a first-frequency driving mode and a second-frequency driving mode. A first frequency of the first-frequency driving mode is lower than a second frequency of the second-frequency driving mode. In the first-frequency driving mode, a frame time includes a scanning section and a corresponding front and rear porch section immediately following the scanning section. The driving method further includes scanning sub-pixels of the display panel in the scanning section of the first-frequency driving mode, where in the front and rear porch section, the sub-pixels of the display panel are not scanned, and front and rear porch sections corresponding to at least part of a plurality of frames in the first-frequency driving mode include at least one compensation section. The method further includes providing a data signal to each data line of a plurality of data lines of the display panel in a compensation section of the at least one compensation section.
    Type: Grant
    Filed: February 17, 2023
    Date of Patent: September 10, 2024
    Assignee: Xiamen Tianma Micro-Electronics Co., Ltd.
    Inventors: Huomei Hua, Rong Chen, Guochang Lai
  • Patent number: 12085829
    Abstract: A method for driving electro-optic displays including a layer of electro-optic material disposed between a common electrode and a backplane including an array of pixel electrodes, each coupled to a pixel transistor. The method for driving includes apportioning a displayable region of the electro-optic display into N BRAID line groups, where each of the N BRAID line groups is associated with a frame buffer. The method also includes receiving first image data comprising optical state data for the entire displayable region of the electro-optic display, and sequentially writing subsets of the first image data to each of the N frame buffers, wherein each of the N frame buffers is written with data corresponding to the corresponding BRAID line group. The method also includes sequentially updating portions of the displayable region of the electro-optic display based on the data in each of the N frame buffers.
    Type: Grant
    Filed: December 30, 2022
    Date of Patent: September 10, 2024
    Assignee: E INK CORPORATION
    Inventors: Bryan Hans Chan, Craig Lin
  • Patent number: 12087216
    Abstract: An organic light-emitting diode (OLED) display device and an operating method thereof are disclosed. The OLED display device includes an OLED panel, a non-volatile memory and a volatile memory. The non-volatile memory is coupled to the OLED panel and used for storing accumulated current data from the OLED panel. The volatile memory is coupled between the non-volatile memory and the OLED panel and used for storing a compensation value generated according to the accumulated current data stored in the non-volatile memory. When the OLED panel is directly compensated with the compensation value, the non-volatile memory receives and stores updated accumulated current data of the OLED panel.
    Type: Grant
    Filed: August 31, 2022
    Date of Patent: September 10, 2024
    Assignee: RAYDIUM SEMICONDUCTOR CORPORATION
    Inventors: Yuhe Chiou, Shih Hsun Huang, Shao-Ping Hung
  • Patent number: 12080243
    Abstract: A display device includes: in a display region, a first scanning control line, a light emission control line, a data signal line, a pixel circuit provided at an intersection of the first scanning control line and the data signal line, and a light-emitting element provided for each of the pixel circuits; and in a non-display region, a first scanning control circuit and a light emission control circuit, wherein each of the pixel circuits includes a drive transistor, a write transistor, and a capacitor, the drive transistor including a first control terminal and a second control terminal positioned above and below a semiconductor layer, the light emission control circuit outputs, to the light emission control line, a light emission control signal that switches between a select state in which the drive transistor is turned on and a non-select state in which the drive transistor is turned off.
    Type: Grant
    Filed: October 11, 2019
    Date of Patent: September 3, 2024
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Takayuki Nishiyama
  • Patent number: 12080205
    Abstract: A method of compensating for stains caused by deterioration of a display device, the display device including an illuminance sensor and a display panel including pixels and an optical fingerprint sensor, the method including determining, while in a test mode of the display device and via the illuminance sensor, whether an illuminance is a reference value or less, emitting, while in the test mode of the display device, first color light from the display panel when the illuminance is the reference value or less, and acquiring, while in the test mode of the display device, afterimage compensation data relating to amounts of deterioration of the pixels by receiving the first color light through an optical fingerprint sensor.
    Type: Grant
    Filed: October 4, 2021
    Date of Patent: September 3, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyun Dae Lee, Kyung Tea Park
  • Patent number: 12073795
    Abstract: A scan driver and a driving method thereof, in which the scan driver includes a plurality of stages outputting an output signal in response to clock signals supplied at a first frequency during a driving time of one frame, wherein the plurality of stages are supplied with the clock signals at a second frequency lower than the first frequency during a hold time of the one frame that is separate from the driving time of the one frame.
    Type: Grant
    Filed: June 19, 2023
    Date of Patent: August 27, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hai Jung In, Soon Gi Kwon
  • Patent number: 12073777
    Abstract: Provided are a display panel and a display device. The display panel includes a first light-emitting element, a second light-emitting element, a first driver circuit and a second driver circuit. The first driver circuit is electrically connected to the first light-emitting element and configured to provide a first drive current to the first light-emitting element to control the first light-emitting element to emit light, and the second driver circuit is electrically connected to the second light-emitting element and configured to provide a second drive current to the second light-emitting element to control the second light-emitting element to emit light.
    Type: Grant
    Filed: May 19, 2023
    Date of Patent: August 27, 2024
    Assignee: Hubei Yangtze Industrial Innovation Center Of Advanced Display Co., Ltd.
    Inventor: Yingteng Zhai
  • Patent number: 12073767
    Abstract: A display device includes pixels connected to scan lines and data lines, each pixel including a driving transistor and at least one light emitting element, and a timing controller configured to generate output data using external input data. The timing controller includes a first compensator configured generate first data by correcting the external input data using at least one of optical measurement information, a threshold voltage of each of the driving transistors, mobility information, dimming information, and temperature information, and an afterimage compensator configured to generate second data based on age information of each light emitting element and the first data, generate third data based on a current amount corresponding to the first data and a current amount corresponding to the second data, and generate the age information by accumulating the third data.
    Type: Grant
    Filed: May 18, 2023
    Date of Patent: August 27, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Joon Hyeok Jeon, Byoung Kwan An, Sang Myeon Han, Chang Hun Kim, Seung Ho Park, Seok Gyu Ban, Nam Jae Lim
  • Patent number: 12073763
    Abstract: A pixel unit includes N light-emitting devices and a pixel driving chip. The pixel driving chip includes: a data signal terminal used to receive a data signal; a power supply signal terminal used to receive a power supply signal; and N signal channel terminals being in one-to-one correspondence with the N light-emitting devices. A first electrode of a first light-emitting device in the N light-emitting devices is configured to be coupled to the power supply signal terminal, a second electrode of an n-th light-emitting device in the N light-emitting devices is coupled to a first electrode of an (n+1)-th light-emitting device and an n-th signal channel terminal in the N signal channel terminals; N is a positive integer greater than 1, and n is a positive integer greater than or equal to 1 and less than or equal to N.
    Type: Grant
    Filed: May 23, 2022
    Date of Patent: August 27, 2024
    Assignees: BOE MLED TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Qibing Gu, Guofeng Hu, Xiuling Li, Bao Fu, Wenchieh Huang, Lingyun Shi, Ming Chen
  • Patent number: 12067937
    Abstract: A display panel is disclosed. The display panel includes a pixel driving circuit. The pixel driving circuit includes: a first transistor, wherein the first transistor and a light-emitting device are series-connected between a first power line and a second power line; and a second transistor, wherein the second transistor and the light-emitting device are series-connected between the first power line and the second power line. A width-to-length ratio of the first transistor is greater than a width-to-length ratio of the second transistor. A display device is further disclosed.
    Type: Grant
    Filed: December 16, 2021
    Date of Patent: August 20, 2024
    Inventors: Weiran Cao, Kuo Gao, Baixiang Han
  • Patent number: 12067921
    Abstract: The present application discloses a display device brightness compensation look-up table obtaining method. The method includes a parameter reading step, an initial grayscale brightness detection step, a compensation region brightness detection step, a compensation data obtaining step, and a compensation look-up table generation step. The above method solves a technical issue that conventional demura technologies cannot uniform brightness of the display panel to result in poor quality of the display panel.
    Type: Grant
    Filed: August 25, 2021
    Date of Patent: August 20, 2024
    Assignee: TCL China Star Optelectronics Technology Co., Ltd.
    Inventor: Yun Zhang
  • Patent number: 12068335
    Abstract: To provide a light-emitting device in which variation in luminance among pixels caused by variation in threshold voltage of transistors can be suppressed. The light-emitting device includes a transistor including a first gate and a second gate overlapping with each other with a semiconductor film therebetween, a first capacitor maintaining a potential difference between one of a source and a drain of the transistor and the first gate, a second capacitor maintaining a potential difference between one of the source and the drain of the transistor and the second gate, a switch controlling conduction between the second gate of the transistor and a wiring, and a light-emitting element to which drain current of the transistor is supplied.
    Type: Grant
    Filed: April 25, 2023
    Date of Patent: August 20, 2024
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Hiroyuki Miyake
  • Patent number: 12067935
    Abstract: A display compensating method, display compensating device, and display device are provided, which relates to field of display and addresses the issues of poor screen uniformity, grayscale relationship change of sub-pixel due to ambient temperature change, and display screen brightness affected by ageing offset of threshold voltage corresponding to the sub-pixel. The display compensating method is applied to the display device, including: converting a received grayscale signal into a brightness signal; performing an optical compensation on a display brightness of the display device based on the brightness signal; converting a corresponding brightness signal on which the optical compensation is performed into a voltage signal; compensating for a threshold voltage corresponding to each sub-pixel in the display device based on the voltage signal; and compensating for operating parameters of the display device for the display device at different operating temperatures.
    Type: Grant
    Filed: May 7, 2021
    Date of Patent: August 20, 2024
    Assignees: Beijing BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Yifan Hou, Tiankuo Shi, Zhihua Ji, Xiaomang Zhang, Xin Duan, Wei Sun, Tao Yang, Chenxi Zhao, Xiangjun Peng, Shuo Zhang, Minglei Chu, Yan Sun, Yanhui Xi
  • Patent number: 12061395
    Abstract: The present invention is applicable to a display device-related technical field, and relates to, for example, a flat lighting device and a display device using a light-emitting diode (LED).
    Type: Grant
    Filed: October 6, 2020
    Date of Patent: August 13, 2024
    Assignee: LG ELECTRONICS INC.
    Inventors: Sungmin Park, Wonseok Choi, Soohyun Kim
  • Patent number: 12062345
    Abstract: A display device, which fixes the magnitude of a driving current flowing through light-emitting devices in a low luminance region and controls an application period of the driving current, includes: light-emitting devices; a processor for controlling the light-emitting devices on the basis of a gray level required for the light-emitting devices in each unit frame; and a timing controller which divides the unit frame into a plurality of sub-frames and generates a scan signal corresponding to each sub-frame.
    Type: Grant
    Filed: November 7, 2022
    Date of Patent: August 13, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seungyong Shin, Kyehoon Lee, Sungyeol Kim, Jonghoon Jung
  • Patent number: 12062331
    Abstract: An OLED pixel compensation circuit, a driving method thereof, and a display device are provided. The OLED pixel compensation circuit includes an input sub-circuit, a compensation sub-circuit, a driving sub-circuit and a light-emitting sub-circuit. The input sub-circuit is coupled to the compensation sub-circuit and configured to input a data signal into the compensation sub-circuit. The compensation sub-circuit is coupled to the driving sub-circuit and the light-emitting sub-circuit and configured to compensate a threshold voltage of the driving sub-circuit. The driving sub-circuit is configured to drive the light-emitting sub-circuit to emit light after the threshold voltage of the driving sub-circuit is compensated.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: August 13, 2024
    Assignees: Fuzhou BOE Optoelectronics Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zuwei Weng, Weize Xu, Bin Weng