Electroluminescent Device Patents (Class 315/169.3)
  • Patent number: 11539018
    Abstract: Disclosed relates to a transparent display panel and manufacturing method of thereof, and the transparent display panel including a patterned cathode with improved transparency as a whole.
    Type: Grant
    Filed: November 25, 2020
    Date of Patent: December 27, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: EunJu Kim, JongHyun Park
  • Patent number: 11538876
    Abstract: The disclosure provides LED display panel and manufacturing method thereof. LED display panel includes: substrate; LED on substrate; pixel defining layer defining pixel opening on substrate, the LED being within pixel opening; and first encapsulation layer on light emitting side of LED. Portion of first encapsulation layer within pixel opening includes sidewall inclined with respect to substrate, surface of sidewall close to LED includes first portions and second portions alternately arranged in direction away from LED and connected to each other, and inclination angles of first portions with respect to substrate are smaller than those of second portions with respect to substrate. Refractive index of material of first encapsulation layer is greater than refractive index of material of each of layer structures directly on both sides of first encapsulation layer in direction perpendicular to substrate.
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: December 27, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Binbin Cao
  • Patent number: 11538877
    Abstract: The present disclosure relates to an organic light emitting diode display panel and a method of manufacturing the organic light emitting diode display panel. A display panel, including: a plurality of first light emitting layers arranged in an array in a first direction and a second direction; and a pixel defining layer including a plurality of first openings, wherein each first opening has a reduced size in the first direction, so that the corresponding first light emitting zone defined by the first opening has a first misalignment tolerance range in the first direction, and has a second misalignment tolerance range in the second direction, the corresponding first light emitting zone is allowed to shift in the first direction within the first misalignment tolerance range without overlapping the shaded region of the corresponding first light emitting layer.
    Type: Grant
    Filed: April 20, 2020
    Date of Patent: December 27, 2022
    Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD.
    Inventor: Peng Xu
  • Patent number: 11527198
    Abstract: Provided are a pixel driving circuit, a driving method thereof, a display panel and a display device. The pixel driving circuit includes a pulse-width adjustment module, an amplitude adjustment module and a light-emitting element. The pulse-width adjustment module is electrically connected to a sweep signal terminal and includes a pulse-width drive transistor. The pulse-width drive transistor is configured to supply a sweep signal supplied from the sweep signal terminal to the amplitude adjustment module. The amplitude adjustment module is configured to control the light emission duration of the light-emitting element according to the sweep signal. In the provided pixel driving circuit, driving method thereof, display panel and display device, a switching-off voltage for switching off the amplitude adjustment module does not need to be supplied additionally, thereby reducing the circuit complexity of a pixel driving circuit.
    Type: Grant
    Filed: March 28, 2022
    Date of Patent: December 13, 2022
    Assignee: Hubei Yangtze Industrial Innovation Center Of Advanced Display Co., Ltd.
    Inventor: Yingteng Zhai
  • Patent number: 11522137
    Abstract: The present disclosure provides an organic light emitting element which has a pair of electrodes and an organic compound layer disposed therebetween and in which the organic compound layer contains an organic compound represented by the following general formula [1], wherein in the formula [1], Ar1 and Ar2 each independently represent an aromatic hydrocarbon group or a heteroaromatic ring group, R1 to R4 are each independently selected from a hydrogen atom or a substituent, R1 and R2 and R3 and R4 each may form a benzene ring, wherein the benzene ring may have at least one substituent.
    Type: Grant
    Filed: September 12, 2019
    Date of Patent: December 6, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hirokazu Miyashita, Jun Kamatani
  • Patent number: 11514857
    Abstract: An organic light emitting diode display with improved aperture ratio includes: a substrate; first and second pixels disposed in a first row of the substrate and third and fourth pixels disposed in a second row adjacent to the first row and respectively disposed in the same columns as the first and second pixels; a scan line and a previous scan line applying a scan signal and a previous scan signal, respectively, to the pixel units; a data line and a driving voltage line applying a data signal and a driving voltage, respectively, to the pixel units; and a common initialization voltage line disposed between the first and second pixels and between the third and fourth pixels, commonly connected to the pixel units, and applying an initialization voltage. One common initialization contact hole connected to all pixels units and one initialization voltage line connected to the common initialization contact hole are surrounded by the pixel units.
    Type: Grant
    Filed: June 21, 2021
    Date of Patent: November 29, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD
    Inventors: Ju-Hee Hyeon, Hyun-Chol Bang
  • Patent number: 11515361
    Abstract: The present disclosure provides a light emitting device and a method for manufacturing the same, and a display device. The light emitting device includes a plurality of light emitting units including a red light emitting unit, a green light emitting unit, and a blue light emitting unit, each light emitting unit including a micro-cavity structure. The light emitting device includes an anode structure, a cathode and a functional layer therebetween. The functional layer includes a light emitting layer including a red light emitting layer at least partially located in the red light emitting unit, an orthographic projection of the red light emitting layer on the backplane not overlapping with that of the blue light emitting unit on the backplane; a green light emitting layer at least partially located in the green light emitting unit; and a blue light emitting layer at least partially located in the blue light emitting unit.
    Type: Grant
    Filed: March 20, 2020
    Date of Patent: November 29, 2022
    Assignee: Beijing BOE Technology Development Co., Ltd.
    Inventors: Can Wang, Xiaochuan Chen, Minghua Xuan, Can Zhang, Angran Zhang
  • Patent number: 11508852
    Abstract: A semiconductor device that can operate at high speed or having high strength against stress is provided. One embodiment of the present invention is a semiconductor device including a semiconductor film including a channel formation region and a pair of impurity regions between which the channel formation region is positioned; a gate electrode overlapping side and top portions of the channel formation region with an insulating film positioned between the gate electrode and the side and top portions; and a source electrode and a drain electrode in contact with side and top portions of the pair of impurity regions.
    Type: Grant
    Filed: October 5, 2020
    Date of Patent: November 22, 2022
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Shunpei Yamazaki
  • Patent number: 11499936
    Abstract: A sensor includes: a hole; a sensing area formed around the hole, wherein at least one sensor is in the sensing area; and a crack detector configured to output a first crack signal if a comparison value obtained by comparing a detected value from the at least one sensor with a reference value exceeds an error range.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: November 15, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Il Hun Jeong, Yeon Shil Jung, Hwan Woo Lee, Hae Goo Jung
  • Patent number: 11495155
    Abstract: A pixel circuit includes a light emitting element, a first driver transistor, a second driver transistor, and a first compensation capacitor. A first terminal of the first driving transistor is configured to receive a power signal, and a second terminal of the first driving transistor is electrically coupled to the light emitting element. A first terminal of the second driving transistor receives the power signal, and a control terminal of the second driving transistor is electrically coupled to the light emitting element. The first compensation capacitance is electrically coupled to a control terminal of the first driving transistor and the second terminal of the second driving transistor, respectively.
    Type: Grant
    Filed: November 19, 2020
    Date of Patent: November 8, 2022
    Assignee: AU OPTRONICS CORPORATION
    Inventors: Chih-Lung Lin, Chin-Hsien Tseng, Po-Cheng Lai, Yu-Sheng Lin, Mao-Hsun Cheng
  • Patent number: 11495167
    Abstract: An infinitely expandable display device according to an embodiment of the present disclosure includes a plurality of display units including a plurality of data drivers connected through a bidirectional interface circuit, and a timing controller commonly connected to the display units through the bidirectional interface circuit. Each of the data drivers includes a first reception circuit configured to receive a first interface signal in a first direction, a first transmission circuit configured to transmit the first interface signal in the first direction, a second reception circuit configured to receive a second interface signal in a second direction opposite the first direction, a second transmission circuit configured to transmit the second interface signal in the second direction, and a switch circuit SWP connected to the first transmission circuit, the second transmission circuit, and the second reception circuit.
    Type: Grant
    Filed: November 4, 2021
    Date of Patent: November 8, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: Jun Woo Yun, Tae Gung Kim
  • Patent number: 11455050
    Abstract: A display device with improved display quality and reduced power consumption is provided. The display device includes a gate driver, a display portion, and a selection signal output circuit. The display portion includes pixel circuits and scan lines. Each of the pixel circuits includes a display element. The gate driver is electrically connected to the scan lines. The first scan lines are electrically connected to the pixel circuits. The scan lines are each configured to receive a first scan signal. The selection signal output circuit is configured to output a first selection signal. The first selection signal is configured to supply the first scan signal to a selected scan line. The display element is configured to update display by the first scan signal. In the pixel circuits, one display element displays an image updated with a different update frequency from another display element.
    Type: Grant
    Filed: January 3, 2020
    Date of Patent: September 27, 2022
    Inventors: Hidenori Mori, Takahiro Fukutome
  • Patent number: 11455954
    Abstract: A pixel of an organic light emitting diode (“OLED”) display device includes a switching transistor which transfers a data voltage, a storage capacitor which stores the data voltage transferred by the switching transistor, a driving transistor which generates a driving current based on the data voltage stored in the storage capacitor, an emission control transistor which selectively forms a path for the driving current in response to an emission control signal, an OLED which emits light based on the driving current, and a supplemental electrode overlapping a gate electrode of the driving transistor, the supplemental electrode having a first voltage for a predetermined time period from a time point at which the emission control signal has a turn-on level, and having a second voltage after the predetermined time period.
    Type: Grant
    Filed: May 13, 2021
    Date of Patent: September 27, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yoomin Ko, Gun Hee Kim, Sang Hoon Kim, Taehoon Yang, Joohee Jeon
  • Patent number: 11450293
    Abstract: A phase modulator for reflecting incident light at a desired angle includes pixel circuits and reflection pixels provided at positions where column data lines and row scanning lines orthogonal and intersect each other, and liquid crystal layers where each refractive index to incident light is changed by a driving voltage supplied from one pixel circuit. Each column data line outputs a control voltage which varies in a range up to a predetermined maximum voltage to corresponding pixel circuits. Each pixel circuit includes a charge pump for amplifying the control voltage. When the driving voltage supplied to a corresponding liquid crystal layer is not higher than the maximum voltage, the control voltage is outputted to the liquid crystal layer without amplifying. When the driving voltage supplied to the liquid crystal layer exceeds the maximum voltage, the control voltage is amplified by a charge pump and outputted to the liquid crystal layer.
    Type: Grant
    Filed: September 17, 2021
    Date of Patent: September 20, 2022
    Assignee: JVCKENWOOD CORPORATION
    Inventors: Takashi Nagoya, Shunsuke Izawa, Kensei Oe
  • Patent number: 11444106
    Abstract: In case the size of the transistor is enlarged, power consumption of the transistor is increased. Thus, the present invention provides a display device capable of preventing a current from flowing to a display element in signal writing operation without varying potentials of power source lines for supplying a current to the display element per row. In setting a gate-source voltage of a transistor by applying a predetermined current to the transistor, a potential of a gate terminal of the transistor is adjusted so as to prevent a current from flowing to a load connected to a source terminal of the transistor. Therefore, a potential of a wire connected to the gate terminal of the transistor is differentiated from a potential of a wire connected to a drain terminal of the transistor.
    Type: Grant
    Filed: January 19, 2021
    Date of Patent: September 13, 2022
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Hajime Kimura
  • Patent number: 11437411
    Abstract: The present invention discloses a thin film transistor (TFT) drive backplane and a Micro- light emitting diode (LED) display that by employing a structure of an oxide thin film transistor drive backplane with a high mobility can achieve fulfillment of the need for large size Micro-LED displays. Disposing the rear metal layer under the base substrate with the rear metal layer including a metal wire layer configured to connect with a drive chip and a metal light shielding layer configured to block ambient light reduces a spliced bezel of the display panel in application of large size Micro-LED displays, reduces depositing and patterning steps of the metal light shielding layer during manufacturing the thin film transistors and further reduces process steps of manufacturing a TFT drive backplane.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: September 6, 2022
    Inventors: Gongtan Li, Hyunsik Seo
  • Patent number: 11437454
    Abstract: Disclosed are a backplane substrate that is capable of expressing high gradation even through a small pixel, a method of manufacturing the same, and an organic light-emitting display device using the same. Integration for ultra-high resolution is possible through structural modification.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: September 6, 2022
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Kum-Mi Oh, Shun-Young Yang, Min-Seong Yun
  • Patent number: 11417715
    Abstract: An array substrate, a display screen and a display device. The array substrate includes a base substrate, a non-transparent first OLED substrate, and a transparent second OLED substrate. The first OLED substrate at least partially surrounds the second OLED substrate. The second OLED substrate includes a first electrode layer located on the base substrate, a light emitting structure layer located on the first electrode layer, and a second electrode layer located on the light emitting structure layer. The first electrode layer includes a plurality of first electrodes. The light emitting structure layer includes a plurality of light emitting structures. A number of the first electrodes is less than a number of the light emitting structures. Each of the first electrodes corresponds to one of the light emitting structures.
    Type: Grant
    Filed: January 7, 2021
    Date of Patent: August 16, 2022
    Assignee: KunShan Go-Visionox Opto-Electronics Co., Ltd.
    Inventors: Mingxing Liu, Ying Zhao, Bing Han, Shuaiyan Gan, Feng Gao
  • Patent number: 11403994
    Abstract: A light emitting assembly includes active matrix (AM) light emitting circuits and an AM driver circuit. Each AM light emitting circuit includes at least one light emitting element, at least one shift register and a current control sub-circuit. The at least one shift register is configured to generate a control signal according to the clock signal from a clock line and the data signal from an inter-array data line and the control signal from the at least one shift register. The current control sub-circuit is configured to control the brightness of the at least one light emitting element according to the base current from a current supply line and the control signal. The AM driver circuit is configured to generate the data signal according to a serial data packet, and provide the data signal, the clock signal and the base current to the AM light emitting circuits.
    Type: Grant
    Filed: March 29, 2021
    Date of Patent: August 2, 2022
    Inventors: Chin-Chih Cheng, Ching-Chung Cheng
  • Patent number: 11404018
    Abstract: A display device comprises a power supply chip configured to output a gate-on voltage; a gamma chip configured to provide a gamma voltage; a detection resistor having a first terminal and a second terminal, wherein the first terminal is grounded; a display panel comprising a plurality of sub-pixels, a plurality of driving transistors and at least one detection transistor; wherein a gate electrode of the driving transistor receives the gate-on voltage, a first electrode of the driving transistor receives the gamma voltage, and a second electrode of the driving transistor is electrically connected to a corresponding sub-pixel; a gate electrode of the detection transistor receives the gate-on voltage, a first electrode of the detection transistor receives a test voltage, and a second electrode of the detection transistor is electrically connected to the second terminal; and a control circuit electrically connected to the second terminal.
    Type: Grant
    Filed: May 6, 2020
    Date of Patent: August 2, 2022
    Assignees: HKC Corporation Limited, CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Mingliang Wang
  • Patent number: 11393804
    Abstract: A display device and a method for fabricating the same. The display device includes a substrate including a circuit layer and a first pad unit; an auxiliary substrate disposed below the substrate and comprising a driving circuit and a second pad unit; a light-emitting unit disposed on the circuit layer; and a connection electrode in contact with a side surface of the substrate and electrically connecting the first pad unit with the second pad unit. The method includes forming a circuit layer and a first pad unit on a first surface of a substrate; forming a driving circuit and a second pad unit on a fourth surface of an auxiliary substrate; and attaching a second surface of the substrate opposite the first surface to a third surface of the auxiliary substrate opposite the fourth surface.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: July 19, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seung Chan Lee, Gun Hee Kim, Sang Ho Park, Ju Won Yoon, Joo Hee Jeon, Hyun Joon Kim
  • Patent number: 11393377
    Abstract: An electro-optical device is provided that includes a pixel circuit disposed corresponding to each of intersections of a scanning line and eight signal lines, an image signal circuit, and a control circuit. The image signal circuit includes a write switch provided for each of the eight signal lines, and in a horizontal scanning period, an image signal is sequentially supplied to the eight signal lines in eight supply periods based on selection signals sequentially selecting eight writing switches. The control circuit controls the selection signals so that a time length of a supply period at a positive polarity time of an image signal is longer than a time length of a supply period at a negative polarity time.
    Type: Grant
    Filed: April 14, 2021
    Date of Patent: July 19, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Shinsuke Fujikawa
  • Patent number: 11391439
    Abstract: Lighting systems combine UV-A and white light with an adjustable CCT value so that any adverse effects from the UV-A radiation are mitigated—that is, tunable adjustments to the output of the non-UV LEDs, or to all of the LEDs, result in an overall mixed output conforming to a target CCT value.
    Type: Grant
    Filed: March 23, 2021
    Date of Patent: July 19, 2022
    Assignee: JUGANU LTD.
    Inventors: Eran Ben-Shmuel, Ada Lotan, Alexander Bilchinsky, Eran Efrati, Jonathan Stok, Yossi Bechor, Yoav Bar, Noam Meir
  • Patent number: 11386854
    Abstract: A pixel circuit includes: a driving switching element; a data initializer to initialize a voltage of a control electrode of the driving switching element; a data writer to write a data voltage to the driving switching element; an organic light emitting element; an organic light emitting element initializer to initialize an anode electrode of the organic light emitting element to a second initialization voltage based on an organic light emitting element initialization gate signal; and a light emitting controller to control an emission of the organic light emitting element. The organic light emitting element initializer includes: a control electrode to receive the organic light emitting element initialization gate signal; an input electrode to receive the second initialization voltage; an output electrode connected to the anode electrode; and a conductive layer to receive a compensation control signal that is different from the organic light emitting element initialization gate signal.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: July 12, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Gun-Hee Kim, Sang-Ho Park, Ju-Won Yoon, Seung-Chan Lee, Joo-Hee Jeon
  • Patent number: 11380261
    Abstract: A pixel circuit, a pixel driving method and a display device are provided. The pixel circuit includes a light emitting element, a driving circuit, an energy storage circuit, an initialization circuit, a compensation control circuit, a light emitting control circuit and a written-in control circuit. The initialization circuit writes an initialization voltage into a control end of the driving circuit under the control of a first gate driving signal so as to conduct the connection between a first end of the driving circuit and a second end of the driving circuit; the compensation control circuit is configured to conduct the connection between the control end of the driving circuit and the second end of the driving circuit under the control of the second gate driving signal.
    Type: Grant
    Filed: January 20, 2020
    Date of Patent: July 5, 2022
    Assignees: ORDOS YUANSHENG OPTOELECTRONICS CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Zhichong Wang
  • Patent number: 11379087
    Abstract: A touch panel input device includes a plurality of first electrode lines, a plurality of second electrode lines, a drive circuit, a reception circuit, a touch detector, a ground state switching circuit, and a controller. The controller executes drive control for causing the drive circuit to sequentially input a drive signal to electrode lines in a non-ground state among each of the plurality of first electrode lines, in a state of controlling the ground state switching circuit to set a part of electrode lines among each of the plurality of first electrode lines and/or the plurality of second electrode lines to the non-ground state, and set the other electrode lines to a ground state.
    Type: Grant
    Filed: June 1, 2021
    Date of Patent: July 5, 2022
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Koichi Sugiyama
  • Patent number: 11372505
    Abstract: The invention provides a touch display panel, a method for preparing the same, and a display device. The touch display panel includes a display module and a touch module that are arranged in a stack, the display module including two conductive layers and an intermediate insulation layer arranged between the two conductive layers, and the touch module including at least two touch electrodes and a touch insulation layer between the at least two touch electrodes, in which at least one of the intermediate insulation layer and the touch insulation layer is made of an organic material.
    Type: Grant
    Filed: April 1, 2020
    Date of Patent: June 28, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Qi Yao, Chuanxiang Xu
  • Patent number: 11374054
    Abstract: An inorganic EL element including: an anode; a hole transporting layer; a light emitting layer; an electron transporting layer; and a cathode, the anode, the hole transporting layer, the light emitting layer, the electron transporting layer, and the cathode being stacked, wherein the hole transporting layer is an oxide film, the light emitting layer is an oxide film, and the electron transporting layer is an oxide film.
    Type: Grant
    Filed: March 13, 2019
    Date of Patent: June 28, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventors: Naoyuki Ueda, Yuki Nakamura, Yukiko Abe, Shinji Matsumoto, Yuji Sone, Ryoichi Saotome, Sadanori Arae, Minehide Kusayanagi, Yuichi Ando
  • Patent number: 11367770
    Abstract: Provided is a display device. The display device has a display area and a non-display area disposed around the display area and includes pixels disposed in the display area; and an intra-pixel bending area disposed along a direction of each of the pixels.
    Type: Grant
    Filed: February 12, 2020
    Date of Patent: June 21, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ju Chan Park, Sun Hee Lee, Sun Ho Kim, Hyun Kim
  • Patent number: 11362133
    Abstract: A multi-color light emitting pixel unit includes a substrate, and a light emitting transistor formed on the substrate. The light emitting transistor includes a bottom conductive layer formed on the substrate and a top conductive layer formed over the bottom conductive layer, an upper light emitting layer formed between the top conductive layer and the bottom conductive layer, at least one lower light emitting layer formed between the upper light emitting layer and the bottom conductive layer, and an electrical connector electrically connecting the at least one lower light emitting layer and the bottom conductive layer.
    Type: Grant
    Filed: September 11, 2019
    Date of Patent: June 14, 2022
    Assignee: JADE BIRD DISPLAY (SHANGHAI) LIMITED
    Inventors: Qiming Li, Qunchao Xu
  • Patent number: 11341911
    Abstract: A pixel circuit includes a storage capacitor unit, a driving transistor, a compensation unit, a switching unit, a light-emitting element and a current supply unit. The compensation unit is connected to a compensation control end, a gate electrode and a second electrode of the driving transistor, and the current supply unit, and configured to, under the control of the compensation control end, control the current supply unit to be electrically connected to, or electrically disconnected from, the gate electrode, and control the gate electrode to be electrically connected to, or electrically disconnected from, the second electrode. The switching unit is connected to a light-emitting control end, the second electrode, and a first end of the light-emitting element, and configured to control the second electrode to be electrically connected to, or electrically disconnected from, the first end of the light-emitting element under the control of the light-emitting control end.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: May 24, 2022
    Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Jiawei Qu, Linxuan Li, Taoran Zhang, Wenjun Liao
  • Patent number: 11341893
    Abstract: Hybrid architectures and method methods of operating a display panel are described. In an embodiment, row driver and pixel driver functions are combined in a group of backbone hybrid pixel driver chips, wherein global signal lines are distributed to the backbone hybrid pixel driver chips, where the global signals are manipulated and distributed to a row of pixel driver chips.
    Type: Grant
    Filed: November 4, 2020
    Date of Patent: May 24, 2022
    Assignee: Apple Inc.
    Inventors: Xiang Lu, Mahdi Farrokh Baroughi, Xiaofeng Wang, Derek K. Shaeffer, Henry C. Jen, Hopil Bae
  • Patent number: 11335757
    Abstract: The pixel circuit which controls the driving of the organic light emitting diode includes a driving TFT which supplies a driving current to the organic light emitting diode; a sampling TFT which samples a threshold voltage of the driving TFT; a first initializing TFT which supplies an initialization voltage to one electrode of the organic light emitting diode; and a storage capacitor which stores a voltage applied to the driving TFT, and at least one of the driving TFT, the sampling TFT, and the first initializing TFT includes a shielding electrode disposed between the substrate and the active layer. Therefore, even though the external light is irradiated onto a transparent substrate, a full white gray-level and a full black gray-level can be expressed so that the gray-level expressiveness may not be degraded.
    Type: Grant
    Filed: August 4, 2020
    Date of Patent: May 17, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: Aram Kim, JaeHoon Park, YoungJang Lee, SeonYeong Kim
  • Patent number: 11329116
    Abstract: A display device includes a first substrate including a display area in which a plurality of pixels are arranged and a light transmitting area disposed in the display area, an interlayer insulating layer covering the display area and exposing the light transmitting area, an inner sidewall of the interlayer insulating layer defining the light transmitting area, and an inorganic film disposed directly on the first substrate in the light transmitting area and overlapping the entire light transmitting area. A size of the light transmitting area is larger than a size of a pixel of the plurality of pixels.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: May 10, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seok Hoon Seo, Dae Sang Yun, Che Ho Lee, So Yeon Jeong
  • Patent number: 11316138
    Abstract: A manufacturing method of a display device, includes: providing a display module bendable at a bending area and including: a passivation film including a polyimide and disposed both in and outside of the bending area, and an adhesive layer attaching a display panel to the passivation film and including a first adhesive portion in the bending area and a second adhesive portion outside of the bending area; reducing an adhesive force of the first adhesive portion, by irradiating a first laser which is a CO2 laser to the adhesive layer at the bending area, to provide the first adhesive portion which has reduced adhesive force; providing a groove in the passivation film and the adhesive layer, along a boundary of the bending area; and removing the passivation film and the first adhesive portion which has the reduced adhesive force, from the display panel, at the groove.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: April 26, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Tae Hyun Sung, Woo Hyun Kim, Hyo Jin Kim
  • Patent number: 11316001
    Abstract: A display device may include a display panel including a display area, a non-display area which may be disposed on a periphery of the display area, and a pad area which may be disposed on one side of the non-display area. The display panel may include data lines disposed in the display area of the display panel along a second direction which intersects a first direction, and connection lines disposed in the display area of the display panel along the first direction. A first data line among the data lines may be connected to a first connection line among the connection lines.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: April 26, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seung Hwan Cho, Jong Hyun Choi, Ju Chan Park, Seung Min Song, Min Seong Yi
  • Patent number: 11308877
    Abstract: Provided are a display driving device capable of accurately detecting characteristics of pixels of a display panel regardless of an offset of an amplifier, and a display device including the same. The display device includes a display panel including pixels and a display driving device including a sense circuit configured to detect pixel signals from the pixels. The sense circuit includes sense amplifiers configured to provide the first reference voltage to the pixels so that the pixels are programmed using a first reference voltage in a programming mode.
    Type: Grant
    Filed: November 20, 2020
    Date of Patent: April 19, 2022
    Assignee: Silicon Works Co., Ltd.
    Inventors: Jeong Lee, Sung Ha Kim, Yong Sung Ahn, Kyung Min Shin, Jung Ryeol Park
  • Patent number: 11308864
    Abstract: A micro light-emitting diode display device and a sub-pixel circuit thereof are provided. The sub-pixel circuit includes a switch unit, a selection driving unit and a light-emitting unit. The switch unit receives a data signal. The selection driving unit is electrically connected to the switch unit, and electrically connected to a first voltage. The light-emitting unit includes two micro light-emitting diodes, which are electrically connected to the selection driving unit. The first ends of the micro light-emitting diodes are connected to the selection driving unit. The second ends of the micro light-emitting diodes are electrically connected to a second voltage. The selection driving unit selects one of the micro light-emitting diodes to emit light according to the data signal transmitted through the switch unit.
    Type: Grant
    Filed: April 27, 2021
    Date of Patent: April 19, 2022
    Assignee: PLAYNIIRTDE DISPLAY CO., LTD.
    Inventors: Kuan-Yung Liao, I-Chung Chiu
  • Patent number: 11302760
    Abstract: The embodiment of the present disclosure discloses an array substrate, a fabrication method thereof, and a display device. The array substrate includes: a base substrate and a plurality of pixel units on the base substrate, wherein the pixel unit includes a plurality of sub-pixels; and the sub-pixel includes an electroluminescent component, a pixel circuit and a photo detection circuit; the pixel circuit includes a drive transistor for driving the electroluminescent component to emit light, and the drive transistor is a low temperature poly-si thin film transistor; and the photo detection circuit includes a detection switch transistor and a PIN-type photodiode, and the detection switch transistor is a metal oxide transistor.
    Type: Grant
    Filed: April 19, 2019
    Date of Patent: April 12, 2022
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Ling Wang, Yi-Cheng Lin, Guang Yan
  • Patent number: 11302235
    Abstract: A display device including: a display panel including first and second display areas, the first display area including first pixels, the second display area including second pixels and a transmission area; a memory storing correction values of a pixel value; a controller generating corrected data by correcting image data using the correction values of the pixel value; and a data driver outputting a data signal corresponding to the corrected data to the display panel, wherein one of the correction values of the pixel value includes a pixel function value for illuminance of external light regarding one of the first pixels and the second pixels, the pixel function value makes a white color coordinate of the first display area equal to a white color coordinate of the second display area based on an external light characteristic, an external light reflection characteristic, and an emission characteristic.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: April 12, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dukjin Lee, Beonghun Beon
  • Patent number: 11302241
    Abstract: Embodiments of the present disclosure provide a pixel circuit and a driving method thereof. The pixel circuit includes a data write circuit, which provides a data signal to a first node according to a control signal, a first control circuit, which provides a threshold compensation signal or an initialization signal to a second node according to the control signal, a capacitor, which stores a voltage difference between the first node and the second node, a second control circuit, which provides a first voltage signal to the driving circuit according to the control signal, a compensation circuit, which provides the threshold compensation signal to the first control circuit, a driving circuit, which provides a driving current to the light emitting device according to the voltage of the first node and the first voltage signal, and a light emitting device, which emits light according to the driving current.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: April 12, 2022
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Jiawei Qu
  • Patent number: 11289041
    Abstract: The present disclosure provides a driving method of a display device and a display device. The driving method comprising: acquiring a pre-display image, wherein each of sub-pixels in the pre-display image corresponds to a predetermined grayscale voltage; displaying the same pre-display image in continuous m frame display cycles, wherein in at least one frame display cycle of the m frame display cycles, a drive voltage of a blue sub-pixel on a display panel of the display device is higher than the predetermined grayscale voltage corresponding to the blue sub-pixel; in at least one frame display cycle of the m frame display cycles, the drive voltage of the blue sub-pixel at a same position on the display panel is lower than the predetermined grayscale voltage corresponding to the blue sub-pixel.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: March 29, 2022
    Assignee: HKC CORPORATION LIMITED
    Inventor: Beizhou Huang
  • Patent number: 11289553
    Abstract: A display device includes a substrate including a display region and a peripheral region, display structures at the display region of the substrate, a plurality of blocking structures at the peripheral region of the substrate wherein the blocking structures have heights different from each other, an organic layer on the display structures and the blocking structures, and an inorganic layer on the organic layer.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: March 29, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sun-Youl Lee, Yeon-Heok You, Sang-Won Seo, Jung-Ju Yu
  • Patent number: 11289027
    Abstract: A light emitting display device includes a display panel, a structure for short detection, and a short detecting unit. The display panel displays an image. The structure for short detection includes a first power line, a second power line, and a short detection line disposed between the first power line and the second power line in the display panel. The short detecting unit senses a sensing value from the short detection line and determines whether a short occurs in the display panel on the basis of the sensing value.
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: March 29, 2022
    Assignee: LG Display Co., Ltd.
    Inventor: Hongsuk Kim
  • Patent number: 11282468
    Abstract: A pixel circuit includes a liquid crystal capacitor, a memory circuit, a driving circuit, a mode-switching circuit, and a control circuit. The memory circuit is configured to store a status signal. The driving circuit includes a first terminal configured to receive a data voltage and a second terminal electrically coupled to a first terminal of the liquid crystal capacitor, and the driving circuit is configured to be ON or OFF according to a scan signal selectively. The mode-switching circuit is configured to be ON or OFF according to a mode-switching signal selectively. The control signal is electrically coupled to the mode-switching circuit at a first node, and is configured to control the voltage level of the first node corresponding to the status signal, and output a display voltage to the liquid crystal capacitor via the mode-switching circuit when the mode-switching circuit is ON.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: March 22, 2022
    Assignee: AU OPTRONICS CORPORATION
    Inventors: Jia-Show Ho, Che-Chia Chang, Ming-Hung Chuang
  • Patent number: 11282437
    Abstract: The present disclosure provides a pixel circuit and a driving method thereof, and a display device. The pixel circuit includes: a light emitting element including an anode and a cathode electrically connected to a first voltage terminal; a control circuit; a first switching circuit configured to transmit a voltage from a data line; a driving circuit including: a first transistor, of which a control terminal, a first terminal and a second terminal are electrically connected to the first switching circuit, a second voltage terminal, and the control circuit respectively, and a capacitor, of which a first terminal and a second terminal are electrically connected to the second voltage terminal and the first switching circuit respectively; and a second switching circuit configured to be in a conductive state to stabilize a potential of the data line at a first fixed level or a second fixed level.
    Type: Grant
    Filed: March 13, 2019
    Date of Patent: March 22, 2022
    Assignee: BOE Technology Group Co., Ltd.
    Inventor: Xinshe Yin
  • Patent number: 11256468
    Abstract: A display apparatus includes a display panel configured to display an image, a front member on a front surface of the display panel, a driving circuit on a rear surface of the display panel and connected to the display panel, a supporting frame configured to surround a side surface of the display panel and a side surface of the driving circuit, a first support supported by the supporting frame and on the rear surface of the display panel, and a vibration generating module supported by the first support to vibrate the display panel.
    Type: Grant
    Filed: September 17, 2019
    Date of Patent: February 22, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: SeulKi Nam, Taehyung Kim, SunBok Song, Seunghyeon Kim
  • Patent number: 11257879
    Abstract: The present application relates to a display panel and a display device thereof. The display panel includes a base substrate and a number of display units disposed on the base substrate. The number of display units form a display region. A display region driving circuit is disposed on the display region of the base substrate and electrically connected to the number of display units so as to drive the number of display units. And a peripheral circuit is disposed on the base substrate at a periphery of the display region. The peripheral circuit includes a number of peripheral circuit units arranged side by side in a same direction. And the number of peripheral circuit units and the number of display units are respectively arranged correspondingly.
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: February 22, 2022
    Assignee: KUNSHAN GO-VISIONOX OPTO-ELECTRONICS CO., LTD.
    Inventors: Xu Qin, Xiuqi Huang, Jinfang Zhang, Lu Zhang, Siming Hu, Zhenzhen Han
  • Patent number: RE49106
    Abstract: An organic light-emitting display device and a related manufacturing method of the organic light-emitting display device are disclosed. In one aspect, the organic light-emitting display device includes a plurality of pixels which are formed between a plurality of scan lines and a plurality of data signal lines. It also includes a plurality of initialization voltage lines which are formed in parallel with the plurality of scan lines and are shared between two adjacent pixels of a row to supply an initialization voltage to the two adjacent pixels. It also includes a driving voltage line which supplies a driving voltage to the plurality of pixels and includes a first voltage line formed in a vertical direction and a second voltage line that is connected between the two adjacent pixels and formed in a horizontal direction.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: June 14, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Hyun-Tae Kim
  • Patent number: RE49201
    Abstract: An organic light-emitting display device and a related manufacturing method of the organic light-emitting display device are disclosed. In one aspect, the organic light-emitting display device includes a plurality of pixels which are formed between a plurality of scan lines and a plurality of data signal lines. It also includes a plurality of initialization voltage lines which are formed in parallel with the plurality of scan lines and are shared between two adjacent pixels of a row to supply an initialization voltage to the two adjacent pixels. It also includes a driving voltage line which supplies a driving voltage to the plurality of pixels and includes a first voltage line formed in a vertical direction and a second voltage line that is connected between the two adjacent pixels and formed in a horizontal direction.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: September 6, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Hyun-Tae Kim