Patents Examined by Emily J Frank
  • Patent number: 11984066
    Abstract: A processing method and a processing device for pixel data, a display device, a display method, and a storage medium are provided. The processing method includes: determining a target pixel point in pixel points of a display frame image to be revised, a pixel data of each pixel point including S initial pixel data of different primary colors and a white initial pixel data; converting a white initial pixel data in a pixel data of the target pixel point into S equivalent pixel data of the different primary colors; obtaining S target pixel data of the different primary colors and a white target pixel data of the target pixel point according to the S equivalent pixel data and according to S initial pixel data of the different primary colors in the pixel data of the target pixel point, the white target pixel data corresponding to a 0 gray scale.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: May 14, 2024
    Assignees: Hefei Xinsheng Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventor: Wenchao Bao
  • Patent number: 11955067
    Abstract: A method of rate control of a display device includes receiving compressed stress data for a slice of a display, decompressing the compressed stress data to obtain reconstructed stress data for the slice, adding additional stress data to the reconstructed stress data to obtain updated stress data for the slice, encoding the updated stress data at a first precision level (pc) to generate first updated compressed stress data for the slice, in response to a size (bc) of the first updated compressed stress data for the slice of the display exceeding a size (bt) of a buffer, determining a second precision level (p) based on the first precision level (pc), a third precision level (ps) of the additional stress data, and a fourth precision level (pb) of the buffer, and encoding the updated stress data at the second precision level (p) to generate second updated compressed stress data.
    Type: Grant
    Filed: May 27, 2021
    Date of Patent: April 9, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventor: Gregory W. Cook
  • Patent number: 11929002
    Abstract: A method of calculating a gamma-value for a display panel includes displaying a first color test image having a first target gray-level and then measuring a first luminance-value implemented by at least one first color-pixel included in a jth display-area, displaying a second color test image having the first target gray-level and then measuring a second luminance-value implemented by at least one second color-pixel included in the jth display-area, deriving an estimated driving current flowing in the second color-pixel at the first target gray-level based on RGB gray level-driving current curves, deriving a second target gray-level when the estimated driving current flows in the first color-pixel based on the RGB gray level-driving current curves, and calculating a target gamma-value to be applied to the first color-pixel included in the jth display-area based on the first target gray-level, the second target gray-level, the first luminance-value, and the second luminance-value.
    Type: Grant
    Filed: February 17, 2021
    Date of Patent: March 12, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dongwon Moon, Sungyoon Jo, Naoaki Komiya, Sang-Gon Lee
  • Patent number: 11928287
    Abstract: A touch control chip, a coding method, and an electronic device are provided, which can effectively reduce influence of a coding signal of a touch control layer of a screen on a display layer. The touch control chip includes: a driving circuit configured to output the coding signal to a display layer of the screen; and a control circuit configured to adjust a driving impedance of the driving circuit during a period when the driving circuit outputs the coding signal, so that a value of the driving impedance in a display sensitive interval of the display layer is greater than a value of the driving impedance in a time interval outside the display sensitive interval, where the display sensitive interval includes a pixel update interval of the display layer, and the pixel update interval is the time interval for a pixel in the display layer to receive a data signal.
    Type: Grant
    Filed: September 17, 2021
    Date of Patent: March 12, 2024
    Assignee: SHENZHEN GOODIX TECHNOLOGY CO., LTD.
    Inventors: Haiming Shen, Liangguang Peng
  • Patent number: 11908367
    Abstract: A color setting method includes: displaying multiple groups of color pictures respectively according to a pre-set sequence, each group of color pictures including at least two pictures, and each picture including at least one color component; marking a selected picture in each group of color pictures in response to a first operation by a user; acquiring a user's color preferences according to a plurality of selected pictures and color components of each picture; setting color parameters of a display device according to the color preferences.
    Type: Grant
    Filed: August 25, 2021
    Date of Patent: February 20, 2024
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Chao Wu, Yilin Lin, Kui Wu
  • Patent number: 11893942
    Abstract: A GOA unit circuit is provided with an input sub-circuit configured to set a turn-on voltage to a first node and a turn-off voltage to a second node in response to an input signal and a first clock signal; a first pull-down sub-circuit, a pull-up sub-circuit, a first control sub-circuit, and a second control sub-circuit configured to set voltage levels of the first, the second, and a third nodes. The gate on array unit circuit also includes a first output sub-circuit to output a first output signal at the turn-on voltage triggered by a second clock in response to voltage levels at the first, second nodes and a second output sub-circuit to output a second output signal falling to the turn-off voltage triggered by the first clock and rising to the turn-on voltage triggered by the third clock in response to voltage levels at the first, third nodes.
    Type: Grant
    Filed: September 17, 2019
    Date of Patent: February 6, 2024
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Lubin Shi, Ke Meng
  • Patent number: 11875718
    Abstract: A correction method for a color temperature curve includes: obtaining pixel values of a display device, and the pixel values including at least two first pixel values and second pixel values; obtaining at least two first standard pixel values according to the at least two first pixel values, and a color temperature value corresponding to each first standard pixel value being a standard color temperature value; determining at least one correction interval according to the at least two first standard pixel values and the second pixel values, and a correction interval including two first standard pixel values and at least two second pixel values therebetween; and correcting the at least two second pixel values to obtain at least two second standard pixel values according to the two first standard pixel values, and a color temperature value corresponding to each second standard pixel value being within a preset color temperature range.
    Type: Grant
    Filed: September 23, 2021
    Date of Patent: January 16, 2024
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Tianmin Rao
  • Patent number: 11869407
    Abstract: Disclosed are methods for compensating colors based on luminance adjustment parameters and the related display devices. The present disclosure provides an electronic device. The electronic device comprises: a display comprising an array of pixels and a control circuit electrically connected to the display. Pixels in the array comprise a plurality of first sub-pixels defining a first color area in a chromaticity plane, a plurality of second sub-pixels defining a second color area in the chromaticity plane and a plurality of third sub-pixels defining a third color area in the chromaticity plane. The plurality of first sub-pixels is associated with a first primary color, the plurality of second sub-pixels is associated with a second primary color, and the plurality of third sub-pixels is associated with a third primary color.
    Type: Grant
    Filed: April 29, 2022
    Date of Patent: January 9, 2024
    Assignee: DYNASCAN TECHNOLOGY CORP.
    Inventors: Tsun-I Wang, Ching-Chun Wu, Chia-Liang Yang
  • Patent number: 11842702
    Abstract: A liquid crystal display apparatus includes: a liquid crystal panel; an input interface for inputting data of a first image; a backlight module; and at least one memory and at least one processor which function as: an estimating unit configured to estimate brightness of light to be irradiated from the backlight module to the liquid crystal panel; a correcting unit configured to correct the first image to a second image based on the brightness estimated by the estimating unit, a contrast of the liquid crystal panel, and a target contrast so that a brightness error with respect to a display brightness in a case where the first image is displayed with the target contrast is suppressed; and a control unit configured to control transmittance of the liquid crystal panel based on data of the second image.
    Type: Grant
    Filed: October 27, 2021
    Date of Patent: December 12, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Koji Mito, Yasuo Suzuki
  • Patent number: 11804168
    Abstract: In at least one embodiment, a display device includes a panel including a display area in which a plurality of pixels is arranged. An optical module is superposed on the display area. The display area has a low-resolution area having a polygonal shape and superposed on the optical module and a high-resolution area neighboring the low-resolution area, unit pixels having the same size as those of the high-resolution area are arranged in a lower pixel density than that of the high-resolution area and transmission areas are disposed adjacent to the unit pixels in the low-resolution area, and unit pixels and transmission areas are arranged in different forms in a boundary area of the high-resolution area neighboring the low-resolution area according to slopes of the boundary area.
    Type: Grant
    Filed: January 5, 2021
    Date of Patent: October 31, 2023
    Assignee: LG Display Co., Ltd.
    Inventors: Jong-Hwan Ock, Yu-Hoon Kim, Jung-Geun Jo
  • Patent number: 11798445
    Abstract: An image processing apparatus includes at least one processor and a memory containing instructions that are configured to cause the at least one processor to perform operations including a correction task configured to correct an image signal that has been input to the first projection-type display apparatus. The first projection image includes a first area which part of the second projection image overlaps, a second area that is adjacent to the first area and affected by the light amount control unit, and a third area different from the first area and the second area. The correction task corrects one of a luminance and a color of the image signal corresponding to the second area so as to reduce a difference from a corresponding one of a luminance and a color of the image signal corresponding to at least one of the first and third areas.
    Type: Grant
    Filed: April 4, 2022
    Date of Patent: October 24, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Ikuo Takanashi
  • Patent number: 11790838
    Abstract: An electronic device is provided. The electronic device includes a pixel array, a gate driver and a bias control signal driver. The pixel array includes a pixel unit. The gate driver is configured to generate a plurality of gate control signals. The bias control signal driver is electrically connected to the pixel unit and the gate driver. The bias control signal driver is configured to generate a bias signal to drive the pixel unit according to a part of the plurality of gate control signals.
    Type: Grant
    Filed: September 19, 2022
    Date of Patent: October 17, 2023
    Assignee: Innolux Corporation
    Inventors: Kazuyuki Hashimoto, Yi-Hung Lin, Kung-Chen Kuo
  • Patent number: 11789479
    Abstract: A low drop-out (LDO) regulator includes a power transistor, an error amplifier and a droop adjusting circuit. The power transistor regulates a driving voltage based on a gate voltage of a gate node to provide an output voltage at an output node. The error amplifier outputs the gate voltage by amplifying a voltage difference between a reference voltage and a feedback voltage proportional to the output voltage. The droop adjusting circuit is connected between the gate node and the output node, is coupled to the output voltage, and adjusts the gate voltage to compensate for a change of the output voltage based on a change of a load current which is provided to a load from the output node.
    Type: Grant
    Filed: March 2, 2022
    Date of Patent: October 17, 2023
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Jungmoon Kim
  • Patent number: 11783751
    Abstract: An embodiment of the present disclosure is directed to a method of determining a charging time. The method includes: obtaining frame images corresponding to at least three grayscales; determining a luminance and a corresponding charging time of at least one test position in each of the frame images; obtaining a charging time luminance variance curve corresponding to the test position according to the luminance of the at least one test position in each of the frame images and the corresponding charging time; and determining the charging time corresponding to a highest luminance in the charging time brightness change curve as an optimal charging time.
    Type: Grant
    Filed: September 23, 2022
    Date of Patent: October 10, 2023
    Assignee: TCL China Star Optoelectronics Technology Co., Ltd.
    Inventor: Qiqi Lin
  • Patent number: 11749186
    Abstract: A display device includes a display panel including a correction area in which a correction image including a logo image and a logo background image is displayed, and a panel driving block. The panel driving block includes a luminance correction block which corrects a luminance of the correction image, and the luminance correction block includes a first correction block which divides the correction area into a plurality of sub-areas, based on a distance from the logo image and generates an area correction signal for correcting the luminance of the correction image, a second correction block which generates a luminance correction signal for correcting the luminance of the correction image displayed in each of the sub-areas, based on a grayscale of the image signal and the area correction signal, and a third correction block which corrects the luminance of the correction image.
    Type: Grant
    Filed: March 30, 2022
    Date of Patent: September 5, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: DongHyun Noh, Wonwoo Jang, Kyoungho Lim
  • Patent number: 11741892
    Abstract: Pixel circuit, display panel and display device are provided. The pixel circuit includes a driving module, a data writing module, a first reset module, a threshold compensation module, light emitting control modules, a leakage suppression module, a storage capacitor, a first capacitor, and a light emitting module. A first terminal of the first reset module is electrically connected to a reference signal terminal. A first terminal of the threshold compensation module is electrically connected to a second terminal of the driving module. A control terminal of the driving module is electrically connected to a first node. A second terminal of the first reset module and a second terminal of the threshold compensation module are both electrically connected to the first node through the leakage suppression module. A connection node between the leakage suppression module and the second terminal of the first reset module is a second node.
    Type: Grant
    Filed: November 15, 2021
    Date of Patent: August 29, 2023
    Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Shuai Yang, Yue Li, Mengmeng Zhang, Gaojun Huang
  • Patent number: 11735091
    Abstract: The driving method provided by the present application includes: detecting a refresh frequency of a display device based on a plurality of predicted frames to obtain a change rule of the refresh frequency; obtaining a current refresh frequency of the display device and a corresponding frame number information; predicting an expected timing when the display device switches the refresh frequency next time and an expected frequency value after switching according to the change rule, the current refresh frequency, and the corresponding frame number information; and performing a gray-scale compensation on the display device according to the expected frequency value and the expected timing.
    Type: Grant
    Filed: December 28, 2020
    Date of Patent: August 22, 2023
    Assignee: TCL China Star Optoelectronics Technology Co., Ltd.
    Inventors: Yizhuo Zhao, Yuhua Chang, Bin Zhao
  • Patent number: 11726587
    Abstract: A virtual image display system and a pointing direction control method of a control device thereof are proposed. The pointing direction control method of the control device includes causing the control device to display an index pattern having a recognition pointing direction, causing a virtual image display device to capture the index pattern displayed by the control device, and causing the virtual image display device to analyze the recognition pointing direction of the index pattern and to display a control cursor according to the recognition pointing direction.
    Type: Grant
    Filed: April 7, 2022
    Date of Patent: August 15, 2023
    Assignee: HTC Corporation
    Inventors: Chia-Chu Ho, Ching-Hao Lee
  • Patent number: 11715402
    Abstract: An electronic device is provided, including a display panel and a processor. The processor is coupled to the display panel, and is configured to calculate an average temperature of the display panel, where when the average temperature is greater than a first temperature threshold, the processor adjusts an upper brightness limit of the display panel to a first adjusted maximum brightness value, so that brightness of the display panel is not greater than the first adjusted maximum brightness value. The disclosure further provides a display panel control method for an electronic device.
    Type: Grant
    Filed: April 1, 2022
    Date of Patent: August 1, 2023
    Assignee: ASUSTEK COMPUTER INC.
    Inventors: Chia-Feng Yang, Chin-An Tseng
  • Patent number: 11705080
    Abstract: The disclosure provides a voltage adjustment method and a voltage adjustment device for a display panel, and a display device. The method includes: detecting whether an absolute value of a difference between a first gray scale data of a first sub pixel and a second gray scale data of a second sub pixel in a static picture area is larger than a preset gray scale threshold; if so, acquiring the first gray scale data; and inputting a target data voltage to the data line according to the first gray scale data, to adjust an original pixel voltage to the first sub pixel into a target pixel voltage and to cause an absolute value of a difference between a first voltage difference in the positive frame and a second voltage difference in the negative frame to be smaller than a preset voltage difference threshold.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: July 18, 2023
    Assignees: HEFEI BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Rongcheng Liu, Huiming Wang