Patents by Inventor Bo Hai
Bo Hai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240168338Abstract: A display device is provided. In the present application, a liquid crystal compensation layer is provided on both first polarizer and second polarizer, and an improvement of compensation value is not realized by stretching the liquid crystal compensation layer but by adjusting the refractive index difference and thickness of the liquid crystal molecules, so the adjustment range is large, the restriction is small, and it can be matched with the high phase difference of the liquid crystal display panel. Therefore, the dark state side-view light leakage of the liquid crystal display panel and the contrast ratio of the liquid crystal display panel are improved, and the image quality is enhanced.Type: ApplicationFiled: March 15, 2022Publication date: May 23, 2024Applicant: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Bo Hai
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Publication number: 20240169945Abstract: A method of adjusting a display screen, an adjusting device for a display screen, a display device, and a storage medium are provided. The method includes obtaining brightness information in an abnormal brightness area in response to detecting that the abnormal brightness area is in a current display screen, obtaining a corresponding transmittance cut-off wavelength sequence in an abnormal color area in the abnormal brightness area in response to determining that the abnormal color in the abnormal brightness area is blue, and eliminating the abnormal color area in the display screen by absorbing wavelength energy whose wavelength is less than a predetermined wavelength threshold in the transmittance cut-off wavelength sequence.Type: ApplicationFiled: May 18, 2022Publication date: May 23, 2024Inventor: Bo HAI
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Publication number: 20240169877Abstract: The present application discloses a chromaticity adjustment method and an adjustment device of a display panel. The chromaticity adjustment method of the display panel includes: determining an initial driving voltage corresponding to a highest gray scale of the display panel; acquiring an initial white picture chromaticity of the display panel based on the initial driving voltage; determining whether the initial white picture chromaticity deviates from a target white picture chromaticity; if the initial white picture chromaticity deviates from the target white picture chromaticity, adjusting the initial driving voltage to adjust the initial white picture chromaticity.Type: ApplicationFiled: March 14, 2022Publication date: May 23, 2024Applicant: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.Inventor: Bo Hai
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Patent number: 11977285Abstract: A reflection rate detection device and reflection rate detection method for a liquid crystal panel are provided by embodiments of the present application. A sphere of the liquid crystal panel is a hollow sphere, and an inner wall of the sphere is uniformly sprayed with diffuse reflection materials. The sphere is provided with a window hole, and the window hole corresponds to the liquid crystal panel. The emitting light source is disposed on the sphere, the emitting light source is configured to emit light, and emitted light enters the liquid crystal panel. The receiver is configured to receive reflection energy of the liquid crystal panel. A reflection rate of a large-area liquid crystal panel can be detected by the present application.Type: GrantFiled: August 21, 2020Date of Patent: May 7, 2024Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.Inventor: Bo Hai
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Publication number: 20240134230Abstract: The present application discloses a display device. Based on that a birefringence of a liquid crystal molecule is symmetrically compensated by using an optical compensation layer, the display device of the present provides a liquid crystal compensation layer on a first polarizer, and the liquid crystal compensation layer adjusts a compensation value through a refractive index difference and a thickness of the liquid crystal molecule. Therefore, the compensation value may match a high phase difference of the display device due to a large adjustment range and a little limitation, thereby improving a dark side-view leakage of the display device, improving a contrast of the display device, and improving an image quality.Type: ApplicationFiled: April 11, 2022Publication date: April 25, 2024Applicant: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Bo Hai
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Publication number: 20240134229Abstract: A display device is provided. A liquid crystal compensation layer is disposed on each of a first polarizer and a second polarizer. The liquid crystal compensation layers adjust compensation values through refractive index differences and thicknesses of liquid crystal molecules, so adjustment ranges are large and limitations are few, and the liquid crystal compensation layers can be matched with high phase differences of a liquid crystal display panel. Opposite two sides of the liquid crystal display panel are arranged symmetrically, number and thickness of film layers on each side is the same, so that a situation of bending due to different stress on the two sides of the liquid crystal display panel can be prevented.Type: ApplicationFiled: March 14, 2022Publication date: April 25, 2024Applicant: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Bo Hai
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Publication number: 20240134224Abstract: A polarizer and a display device are disclosed in the present application. The polarizer of the present application adopts a structure in which a liquid crystal compensation layer and a polarizing layer are stacked on each other, and the liquid crystal compensation layer is used to compensate the birefringence of the liquid crystal molecules in the liquid crystal layer, and the liquid crystal compensation layer adjusts the compensation value by the refractive index difference of the liquid crystal molecules and the thickness, so that the adjustment range is wide, and the adjustment range may be matched with the high phase difference of the display device, thereby improving the side-view light leakage of the liquid crystal display in the dark state, improving the contrast of the liquid crystal display, and improving the image quality.Type: ApplicationFiled: March 13, 2022Publication date: April 25, 2024Applicant: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Bo Hai
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Patent number: 11906839Abstract: The present disclosure provides a display device and an electronic equipment. The display device includes: a display module, the display module having a light emitting side; a phase retarder, the phase retarder is disposed on the light emitting side of the display module; wherein a range of a compensation value of the phase retarder is [?/16, ?/4), (?/4, 7?/16], [9?/16, 3?/4) or (3?/4, 15?/16], where ? is a wavelength of light emitted by the display module.Type: GrantFiled: August 4, 2020Date of Patent: February 20, 2024Assignee: HUIZHOU CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Bo Hai
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Publication number: 20240036390Abstract: A light source module, a liquid crystal display device, and a display apparatus are provided. The light source module disposes a plurality of micro structures disposed at intervals on a light guide surface of a light guide plate and disposes a sum of areas of the micro structures on an unit area on the light guide surface gradually increasing from a light incident side to a light exiting side, which can improve uniformity of light exiting brightness of each region of the light guide plate.Type: ApplicationFiled: January 14, 2022Publication date: February 1, 2024Applicant: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Bo Hai
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Publication number: 20240036391Abstract: A light source module, a liquid crystal display device, and a display apparatus are provided. The light source module can provide a reflective liquid crystal display panel with an area light source similar to ambient light to improve light exiting brightness of a reflective liquid crystal display panel such that the reflective liquid crystal display panel also has a better display effect in a dark environment. Furthermore, the embodiment of the present application also disposes light sources on outer sides of at least two sides of a light guide plate in the light source module, which can improve light exiting brightness of the light guide plate.Type: ApplicationFiled: January 14, 2022Publication date: February 1, 2024Applicant: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Bo Hai
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Publication number: 20240036399Abstract: A light source module, liquid crystal display device and display apparatus. The light source module comprises a light guide plate and a light source disposed on the light guide plate side, and a plurality of micro structures are disposed on a light guide surface of the light guide plate. The light source module can provide a reflective liquid crystal display panel with an area light source similar to ambient light to improve light exiting brightness of the reflective liquid crystal display panel such that reflective liquid crystal display panel also has a better display effect in a dark environment and under a condition without ambient light.Type: ApplicationFiled: January 20, 2022Publication date: February 1, 2024Applicant: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Bo Hai
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Publication number: 20240029678Abstract: The present disclosure relates to a method for calculating a chromaticity value of a white screen of a display device. The method for calculating the chromaticity value of the white screen of the display device of the present disclosure can calculate a corresponding chromaticity value of the white screen, when aperture ratios of a first sub-pixel, a second sub-pixel, and a third sub-pixel of the display device are adjusted. Then, the aperture ratios of the first sub-pixel, the second sub-pixel, and the third sub-pixel of the display device can be adjusted, so as to meet user demand for chromaticity of the white screen, ameliorate a color cast problem of current display devices, and improve a display effect of the display device.Type: ApplicationFiled: August 27, 2022Publication date: January 25, 2024Applicant: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.Inventor: Bo Hai
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Patent number: 11862120Abstract: The present disclosure relates to a method for calculating a chromaticity value of a white screen of a display device. The method for calculating the chromaticity value of the white screen of the display device of the present disclosure can calculate a corresponding chromaticity value of the white screen, when aperture ratios of a first sub-pixel, a second sub-pixel, and a third sub-pixel of the display device are adjusted. Then, the aperture ratios of the first sub-pixel, the second sub-pixel, and the third sub-pixel of the display device can be adjusted, so as to meet user demand for chromaticity of the white screen, ameliorate a color cast problem of current display devices, and improve a display effect of the display device.Type: GrantFiled: August 27, 2022Date of Patent: January 2, 2024Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.Inventor: Bo Hai
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Patent number: 11830450Abstract: A method for adjusting dark-state voltage applied on a liquid crystal panel, a dark-state voltage adjusting device and a storage medium are proposed. The method includes: obtaining a plurality of initial dark-state voltage differences; obtaining a contrast ratio corresponding to each of the initial dark-state voltage differences based on the plurality of initial dark-state voltage differences; obtaining a reference dark-state voltage difference in the plurality of initial dark-state voltage differences, and obtaining a contrast ratio change corresponding to each of the initial dark-state voltage differences based on the reference dark-state voltage difference; and determining a dark-state voltage difference of the LCD panel based on the contrast ratio change corresponding to each of the initial dark-state voltage differences.Type: GrantFiled: August 4, 2020Date of Patent: November 28, 2023Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.Inventor: Bo Hai
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Patent number: 11804191Abstract: A method is provided for adjusting a viewing angle for a dark state of a display panel, and the method includes steps of: obtaining a first brightness change of a to-be-tested panel at a first viewing angle under a condition of a first voltage difference; obtaining a second brightness change of the to-be-tested panel at a second viewing angle under the condition of the first voltage difference; obtaining a ratio of the second brightness change to the first brightness change; and comparing the ratio of the second brightness change to the first brightness change with a first threshold to determine whether the first voltage difference is a selection voltage of the display panel.Type: GrantFiled: August 12, 2020Date of Patent: October 31, 2023Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.Inventor: Bo Hai
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Patent number: 11735130Abstract: The disclosure provides a white balance adjusting method, device, and electronic equipment. The method includes obtaining a first image parameter of a panel under test; obtaining a white balance compensation factor of the panel under test; using a gamma value of the panel under test as a first threshold value to obtain a first target luminance of the panel under test; obtaining a second target luminance of the panel under test; and obtaining grayscale voltages corresponding to sub-pixels of the panel under test based on the second target luminance of the panel under test.Type: GrantFiled: August 4, 2020Date of Patent: August 22, 2023Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.Inventor: Bo Hai
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Patent number: 11694639Abstract: The present invention provides a backlight module and a method for calculating viewing angle for an unknown backlight module. In the present invention, brightness-viewing angle values of the unknown backlight module can be calculated according to the color saturation-viewing angle data of the unknown backlight module at specific viewing angles, and thus are taken to deploy the brightness-viewing angle values of a produced backlight module to be as the same as the brightness-viewing angle values of the unknown backlight module.Type: GrantFiled: September 4, 2020Date of Patent: July 4, 2023Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.Inventor: Bo Hai
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Publication number: 20230194919Abstract: A polarizer, a liquid crystal display module, and a simulation method for liquid crystal display compensation are disclosed. A compensation film includes three layers of uniaxial compensation films. Each of the three uniaxial compensation films has a slow axis which is configured at a same slow axis angle and is perpendicular to an absorption axis of a polarizing film, and each of the three uniaxial compensation films has only an in-plane phase difference or an out-of-plane phase difference. In this manner, it only needs to adjust thickness of each layer of the compensation film when simulating a design of the compensation film or preparing the polarizer, so that an in-plane phase difference and an out-of-plane phase difference of the compensation film can be separately set at will.Type: ApplicationFiled: May 20, 2021Publication date: June 22, 2023Applicant: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Bo Hai
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Patent number: 11676526Abstract: Methods for verifying and improving angular color shift impact factors are provided. Experiments have verified that angular color shift can be effectively improved by downgrading gray levels of red and green subpixels, while downgrading gray levels of blue subpixels may deteriorate the angular color shift.Type: GrantFiled: July 9, 2020Date of Patent: June 13, 2023Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.Inventor: Bo Hai
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Publication number: 20230154425Abstract: A method and device for relieving a fracture phenomenon of a liquid crystal display panel, and the liquid crystal display panel are provided. The method includes: obtaining a fracture location including two or more fracture regions; performing brightness processing on the fracture regions; determining that there is a brightness difference between the fracture regions before the brightness processing if a brightness difference between the fracture regions is reduced after the brightness processing; and reducing the brightness difference between the fracture regions if there is the brightness difference between the fracture regions.Type: ApplicationFiled: September 4, 2020Publication date: May 18, 2023Applicant: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.Inventors: Bo HAI, Meng WANG