Patents Assigned to Himax Technologies Limited
  • Publication number: 20200152146
    Abstract: A liquid crystal display device is provided. A sub-pixel unit includes a liquid crystal capacitor, a storage circuit, and a switching circuit. The storage circuit is configured to store, in a scanning period of the frame period, a data driving signal provided by a data line and provide the data driving signal to the liquid crystal capacitor in a display period of the frame period. The switching circuit is configured to be turned on in the scanning period to provide a reference voltage to the liquid crystal capacitor.
    Type: Application
    Filed: April 30, 2019
    Publication date: May 14, 2020
    Applicant: HIMAX TECHNOLOGIES LIMITED
    Inventor: Wei-Hsien Yeh
  • Patent number: 10650718
    Abstract: The sub-pixel rendering method includes: obtaining a digital image, in which the digital image includes multiple pixels, each of the pixels includes multiple grey levels, and the number of the grey levels in the digital image is greater than the number of the sub-pixel structures; performing a gamma transformation on each of the grey levels to obtain multiple sub-pixel luminances; performing a sub-pixel rendering algorithm on the sub-pixel luminances to obtain multiple rendered sub-pixel luminances; and transforming the rendered sub-pixel luminances into multiple rendered grey levels, and driving the display panel according to the rendered grey levels, in which the number of the rendered grey levels is equal to the number of the sub-pixel structures.
    Type: Grant
    Filed: May 11, 2018
    Date of Patent: May 12, 2020
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventor: Chi-Feng Chuang
  • Patent number: 10649601
    Abstract: A method for improving touch performance of a capacitive touch screen with a non-rectangular shape is provided. The capacitive touch screen includes plural complete cells and at least one incomplete cell for sensing. The method includes: determining whether an active area of the incomplete cell is different from an active area of each of the complete cells; and performing a mutual capacitance compensation on the incomplete cell to compensate a mutual capacitance of the incomplete cell when the active area of the incomplete cell is different from the active area of each of the complete cells.
    Type: Grant
    Filed: October 28, 2018
    Date of Patent: May 12, 2020
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Cheng-Hung Tsai, Yan-Hua Shu, Jen-Chieh Lin, Wai-Pan Wu
  • Patent number: 10643529
    Abstract: A method for compensating brightness non-uniformity of a display panel, and associated display device is provided. The display panel may include a plurality of display blocks, each of the plurality of display blocks may includes one or more display units, and the method includes: according to a control signal, selecting a voltage detection terminal of a display block within the plurality of display blocks, wherein the control signal carries information indicating the display block; according to a voltage level of the voltage detection terminal, generating a plurality of reference voltages; and based on the plurality of reference voltages, driving a display voltage to a display unit within the display block according to a set of display data.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: May 5, 2020
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Chao-Liang Chien, Meng-Wei Shen
  • Publication number: 20200133018
    Abstract: A DOE module including a transparent substrate, a first electrode, a second electrode, a first sensing wire, a sensing layer, a DOE layer, and an insulating layer is provided. The first electrode is disposed on the transparent substrate, and the second electrode is disposed on the transparent substrate. The first sensing wire is distributed on the transparent substrate and electrically connected to the first electrode. The sensing layer is distributed on the transparent substrate and electrically connected to the second electrode. The first sensing wire is insulated from the sensing layer to form a capacitance between the first sensing wire and the sensing layer. The DOE layer is disposed on the transparent substrate. The insulating layer covers the first sensing wire and the sensing layer. The insulating layer has a first opening and a second opening respectively exposing the first electrode and the second electrode.
    Type: Application
    Filed: August 23, 2019
    Publication date: April 30, 2020
    Applicant: HIMAX TECHNOLOGIES LIMITED
    Inventors: Biing-Seng Wu, Han-Yi Kuo, Kuan-Ming Chen, Chih-Yu Chuang, Shi-Jen Wu, Jui-Ni Li, Cheng-Hung Tsai, Chin-Yuan Chiang, Chia-Ming Hsu, Chiau-Ling Huang
  • Patent number: 10636829
    Abstract: A wafer-level optical structure includes at least two optical lens sets disposed on an optically transparent wafer, at least one trench disposed between two adjacent optical lens sets to divide the two adjacent optical lens sets, at least one spacer disposed between two adjacent optical lens sets to be correspondingly and partially disposed in the trench, and an adhesive disposed inside the trench.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: April 28, 2020
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Chih-Sheng Chang, Teng-Te Huang, Shu-Hao Hsu, Jun-Yu Zhan
  • Patent number: 10635883
    Abstract: A flat-panel display embedded with a fingerprint sensor includes a substrate, a first dielectric layer formed on the substrate, a photo sensor formed in the first dielectric layer, and a lens region disposed above and substantially aligned with the photo sensor vertically.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: April 28, 2020
    Assignee: Himax Technologies Limited
    Inventor: Ilin Wu
  • Patent number: 10634987
    Abstract: A convex multi-projector light-field display system includes projectors and a convex diffusion screen facing the projectors. The convex diffusion screen and the plurality of projectors share a same center of curvature, such that each projector projects the image at normal incidence to the convex diffusion screen. Projections of the projectors overlap in an optimal viewing area, within which an observer sees images projected by the projectors, and the optimal viewing area and the plurality of projectors are disposed on opposite sides of the convex diffusion screen.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: April 28, 2020
    Assignees: National Taiwan University, Himax Technologies Limited
    Inventors: Yi Teng Xiao, Hoang Yan Lin
  • Publication number: 20200114602
    Abstract: An imprinting method, which includes following steps. A workpiece is conveyed to a working region by a first conveyer unit. The workpiece is imprinted in the working region through an imprinting segment of a flexible imprinting mold film. The flexible imprinting mold film is driven by a driving roller set, such that at least another one of the imprinting segments of the flexible imprinting mold film rolled around the driving roller set is expanded from the driving roller set and moved to the working region.
    Type: Application
    Filed: December 11, 2019
    Publication date: April 16, 2020
    Applicant: HIMAX TECHNOLOGIES LIMITED
    Inventors: Chin-Der Lee, Han-Yi Kuo, Jui-Pin Tsai
  • Patent number: 10621930
    Abstract: A method for processing an image includes the following steps. A data of the image including a first pixel and a second pixel adjacent to each other is provided. A first subpixel of the first pixel and a second subpixel of the second pixel are set as a higher subpixel and a lower subpixel. A lookup process is performed to determine a shifted gray level of the higher subpixel and a shifted gray level of the lower subpixel in accordance with the gray level of the higher subpixel and the gray level of the lower subpixel respectively. A gray level of the higher subpixel and a gray level of the lower subpixel are updated in accordance with the shifted gray level of the higher subpixel and the shifted gray level of the lower subpixel.
    Type: Grant
    Filed: February 13, 2018
    Date of Patent: April 14, 2020
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventor: Tung-Ying Wu
  • Patent number: 10622347
    Abstract: An electrostatic discharge protection (ESD) structure for protecting a core circuit of an integrated circuit from an ESD event received by a conductive pad of the integrated circuit is provided. The ESD protection structure includes a first conductive layer, a clamp device, a first electrical connection part and a second electrical connection part. The first conductive layer is formed below the conductive pad, and includes a first conductive portion, an insulating portion and a second conductive portion. The insulating portion is surrounded by the first conductive portion and the second conductive portion. The first conductive portion is electrically connected between the conductive pad and the second conductive portion. The clamp device is arranged for clamping the ESD event. The first electrical connection part is coupled between the first conductive portion and the clamp device. The second electrical connection part is coupled between the second conductive portion and the core circuit.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: April 14, 2020
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Hung-Yi Chen, Ching-Ling Tsai
  • Patent number: 10622389
    Abstract: An image sensor is provided. The image sensor includes a visible light receiving portion and an infrared receiving portion. The visible light receiving portion is configured to receive a visible light. The visible light receiving portion includes a first white filter. The infrared receiving portion is configured to receive infrared. The infrared receiving portion includes an infrared photodiode, a second white filter, and an infrared pass filter. The second white filter is disposed on the infrared photodiode. The infrared pass filter is disposed on the infrared photodiode. The infrared is received by the infrared photodiode after passing through the second white filter and the infrared pass filter.
    Type: Grant
    Filed: September 10, 2016
    Date of Patent: April 14, 2020
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Yu-Jui Hsieh, Po-Nan Chen
  • Publication number: 20200111397
    Abstract: A timing controller and an operating method are provided. The timing controller includes a bit capture circuit and a gear position signal generation circuit. The bit capture circuit is configured to capture a first part bit from each of a plurality of original sub-pixel data of a video stream. The gear position signal generation circuit determines a gear position signal related to a current frame according to the first part bits. The gear position signal is provided to a gamma voltage generation circuit of a source driver such that the gamma voltage generation circuit changes a plurality of gamma voltages according to the gear position signal.
    Type: Application
    Filed: October 3, 2018
    Publication date: April 9, 2020
    Applicant: HIMAX TECHNOLOGIES LIMITED
    Inventor: Tung-Ying Wu
  • Publication number: 20200104623
    Abstract: An example method includes receiving the one or more image frames successively in time, wherein a first image frame is received before a second image frame in time and defining one or more blocks in each of the one or more image frames, wherein the first image frame includes a first block, and the second image frame includes a second block. The method also includes in response to the second block having a probability higher than a threshold to be associated with a region of interest (ROI), selecting the second block from the one or more blocks in the second image frame, and in response to the selected second block being associated with the first block, determining an ROI status of the second block to represent whether the second block includes any part of the ROI based on an ROI status of the first block.
    Type: Application
    Filed: September 30, 2018
    Publication date: April 2, 2020
    Applicant: HIMAX TECHNOLOGIES LIMITED
    Inventors: Pei-Yu JHANG, Der Wei YANG
  • Patent number: 10607064
    Abstract: An optical projection system includes an image sensor, a light emitting circuit and a processor. The image sensor is configured to capture an image of a target object. The processor is electrically coupled to the image sensor and the light emitting circuit. The processor is configured to determine a size of the target object, and control the light emitting circuit to emit an optical pattern and to fan out the optical pattern according to the size of the target object, in order to cover the target object.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: March 31, 2020
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Cheng-Hung Chi, Yi-Nung Liu
  • Patent number: 10600833
    Abstract: An image sensor is provided. The image sensor includes a visible light receiving portion and an infrared receiving portion. The visible light receiving portion is configured to receive a visible light. The infrared receiving portion is configured to receive infrared. The visible light receiving portion includes a color filter ball layer configured to collect the visible light. In some embodiments of the present invention, the infrared receiving portion includes an infrared pass filter ball layer configured to collect the infrared. In some other embodiments of the present invention, the infrared receiving portion includes a white filter ball layer configured to collect the infrared.
    Type: Grant
    Filed: March 1, 2017
    Date of Patent: March 24, 2020
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Yu-Jui Hsieh, Po-Nan Chen
  • Patent number: 10600370
    Abstract: A local dimming system includes a mean estimation unit that estimates a mean value of an image; a PWM gain control unit that generates a PWM gain value according to the mean value; a spatial filter that performs on a plurality of the mean values in spatial domain to enhance a plurality of the PWM gain values, thereby generating enhanced PWM gain values; a scene change detection unit that detects scene change according to a histogram mean value generated by the mean estimation unit; a temporal filter that performs in temporal domain according to the enhanced PWM gain values and a result of scene change detection, thereby generating PWM values; a light shape imitation (LSI) unit that generates luminance gain according to the PWM value; and a pixel compensation unit that performs pixel compensation on the image according to the luminance gain, thereby resulting in a compensated image.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: March 24, 2020
    Assignee: Himax Technologies Limited
    Inventors: Yun-Sheng Lin, Li-Chia Chu, Ying-Han Yeh
  • Patent number: 10595007
    Abstract: A structured-light (SL) method of dynamically generating a depth map includes moving a lens of an image capture device to a first position associated with first depth of field (DOF); capturing first reflected structured light with the first DOF, thereby resulting in a first image; processing the first image to generate a first depth map; moving the lens to a second position associated with second DOF, the second DOF being nearer the image capture device than the first DOF; capturing second reflected structured light with the second DOF, thereby resulting in a second image; processing the second image to generate a second depth map; and combining the first depth map and the second depth map to result in a combined depth map.
    Type: Grant
    Filed: March 21, 2018
    Date of Patent: March 17, 2020
    Assignees: Himax Imaging Limited, Himax Technologies Limited
    Inventors: Biing-Seng Wu, Yu-Yu Sung, Huan-Pin Tseng
  • Patent number: 10579765
    Abstract: A chip includes a substrate; macros placed on the substrate, which has a placement region being divided into sub-regions according to locations of the macros; and one or more vertical power stripes (VPSs) disposed in each sub-region. At least one VPS is not aligned with the VPSs of an adjacent higher or lower sub-region.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: March 3, 2020
    Assignees: NCKU Research and Development Foundation, Himax Technologies Limited
    Inventors: Jai-Ming Lin, Jhih-Sheng Syu, Bo-Yuan Huang
  • Patent number: 10573266
    Abstract: A display panel driving apparatus and method are provided. The display panel driving apparatus includes a timing control circuit, a memory, a compensation circuit and a data driving circuit. The memory provides at least one coupling-capacitance information between a current pixel and at least one adjacent pixel in a display panel. By using the coupling-capacitance information, the compensation circuit compensates the current pixel data to obtain the compensated pixel data for compensating the voltage offset of the current pixel caused by the coupling voltage of the adjacent pixel. The data driving circuit drives the current pixel according to the compensated pixel data.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: February 25, 2020
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Yih-Long Tseng, Ming-Cheng Chiu