Patents by Inventor Jianyu CHANG
Jianyu CHANG 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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Patent number: 9983435Abstract: A backlight module and a display device are disclosed. The present disclosure relates to the technical field of display, whereby the technical problem of dark spots existing at the corners of the liquid crystal display device in the prior art can be solved. The backlight module comprises a reflective sheet and a plurality of light sources that are arranged on said reflective sheet, wherein the reflective sheet at edges and corners of said backlight module has a certain slope or curvature; and adjusting members, arranged at corners of said backlight module, so that the slope or curvature of the reflective sheet at the corners of said backlight module matches the slope or curvature of the reflective sheet at the edges of said backlight module.Type: GrantFiled: January 16, 2015Date of Patent: May 29, 2018Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventors: Qian Cao, Jianyu Chang
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Patent number: 9971199Abstract: The invention provides a liquid crystal display panel and a liquid crystal display device. The liquid crystal display device includes a liquid crystal display panel and an edge-lit backlight module. The liquid crystal display panel includes multiple pixel units arranged in an array and having equal areas. Each pixel unit includes sequentially arranged red sub-pixel, green sub-pixel and blue sub-pixel. Transmittances of blue light of the blue sub-pixels of the pixel units are gradually increased along a direction away from a side-type backlight source of the edge-lit backlight module. Therefore, the invention can increase transmittances of blue light of the blue sub-pixels, compensate the influence of color shift caused by blue light being absorbed in the backlight module and reduce color difference of the liquid crystal display panel.Type: GrantFiled: May 20, 2016Date of Patent: May 15, 2018Assignee: Shenzhen China Star Optoelectronics Technology Co., LtdInventor: Jianyu Chang
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Patent number: 9964802Abstract: The present disclosure relates to a backlight module and a liquid crystal device. The backlight module includes a LED light source and a lens bar. The LED light source is arranged on the LED substrate and includes a plurality of LED lamps encapsulated by CSP. The lens bar is arranged in the front of the LED light source and includes a plurality of chambers. Internal walls of the chambers are parabola-shaped curved surfaces. Each of the LED lamps is arranged in a rim of a focal point formed by the parabola-shaped curved surface such that the curved surface above the LED lamps is symmetrical to that below the LED lamps. With such configuration, the LED light source encapsulated by the CSP may be incorporated in edge-type BLU so as to avoid the optical leakage issue.Type: GrantFiled: March 23, 2016Date of Patent: May 8, 2018Assignee: Shenzhen China Star Optoelectronics Technology Co., LtdInventor: Jianyu Chang
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Publication number: 20180120636Abstract: A liquid crystal device and the backlight module thereof are disclosed. The backlight module includes a backlight plate, at least one optical film, a plurality of optical fibers, and a reflector. The reflector positions the optical fibers at one lateral side of the chamber such that each of the optical fibers and the back plate forms a predetermined included angle. In addition, the reflector is arranged to adjust an angle of the light beams entering the chamber. The back plate reflects the light beams irradiated on the back plate back to the optical film. The uniformity of the transmitted and mixed light beams is guaranteed when the backlight module is adopted in large-scale LCD.Type: ApplicationFiled: April 16, 2015Publication date: May 3, 2018Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventor: Jianyu CHANG
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Publication number: 20180101063Abstract: The present disclosure relates to a backlight module and a liquid crystal device. The backlight module includes a LED light source and a lens bar. The LED light source is arranged on the LED substrate and includes a plurality of LED lamps encapsulated by CSP. The lens bar is arranged in the front of the LED light source and includes a plurality of chambers. Internal walls of the chambers are parabola-shaped curved surfaces. Each of the LED lamps is arranged in a rim of a focal point formed by the parabola-shaped curved surface such that the curved surface above the LED lamps is symmetrical to that below the LED lamps. With such configuration, the LED light source encapsulated by the CSP may be incorporated in edge-type BLU so as to avoid the optical leakage issue.Type: ApplicationFiled: March 23, 2016Publication date: April 12, 2018Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventor: Jianyu CHANG
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Publication number: 20180096639Abstract: A light guiding plate includes a light incident surface, a light emitting surface, a reflective surface, and a first reflective surface. The light emitting surface is opposite to the reflective surface. A first reflective surface connects the light emitting surface and the light incident surface. The light incident surface connects the first reflective surface and the reflective surface. The light incident surface is configured for receiving light beams from a light source. The first reflective surface and an extended surface of the light emitting surface form a first angle, and the first angle is an acute angle. The present disclosure also relates to a backlight module and a display device. The light guiding plate is capable of enhancing the display performance of the display device.Type: ApplicationFiled: May 12, 2016Publication date: April 5, 2018Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventors: Jianyu CHANG, Jinxiong CHEN
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Publication number: 20170322454Abstract: The invention provides a liquid crystal display panel and a liquid crystal display device. The liquid crystal display device includes a liquid crystal display panel and an edge-lit backlight module. The liquid crystal display panel includes multiple pixel units arranged in an array and having equal areas. Each pixel unit includes sequentially arranged red sub-pixel, green sub-pixel and blue sub-pixel. Transmittances of blue light of the blue sub-pixels of the pixel units are gradually increased along a direction away from a side-type backlight source of the edge-lit backlight module. Therefore, the invention can increase transmittances of blue light of the blue sub-pixels, compensate the influence of color shift caused by blue light being absorbed in the backlight module and reduce color difference of the liquid crystal display panel.Type: ApplicationFiled: May 20, 2016Publication date: November 9, 2017Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventor: Jianyu CHANG
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Publication number: 20170153385Abstract: The disclosure provides a light guiding plate and a backlight module. The backlight module comprises a plastic frame, a light source, an optical film sheet and a light guiding plate. The light guiding plate comprises an incident surface, an emitting surface and a bottom surface disposed opposite to the emitting surface. The incident surface connects with the bottom surface and the emitting surface. A reflective film layer is coated on the bottom surface. A grid point layer of the light guiding plate is disposed on the emitting surface. The light source is disposed at the side of the incident surface. The optical film sheet is stacked on the emitting surface. The plastic frame accommodates the light source, the optical film sheet and the light guiding plate. The disclosure further provides a display device.Type: ApplicationFiled: August 21, 2015Publication date: June 1, 2017Applicant: Shenzhen China Star Optoelectronics Technology Co. Ltd.Inventor: Jianyu CHANG
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Publication number: 20170004782Abstract: A liquid crystal display device includes a backlight module, a liquid crystal panel, a color filter and a controller. The backlight module includes a light guide plate having a light-input surface and a light-output surface, a plurality of white LEDs and a plurality of blue LEDs. Both the white LED and the blue LED face to the light-input surface. The while LED includes a blue light chip for giving out blue light and phosphor powder excited by the blue light, and the blue LED includes a blue light chip. The liquid crystal panel is opposite to the light-output surface. The color filter is opposite to the liquid crystal panel. The color filter includes a red photoresist for red light to pass through only, a green photoresist for green light to pass through only and a transparent photoresist for light of any color to pass through.Type: ApplicationFiled: March 26, 2015Publication date: January 5, 2017Inventors: Yong FAN, Jianyu CHANG
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Publication number: 20170003433Abstract: The present invention discloses a light guiding plate, an edge-lit backlight module and a liquid crystal display device. The light guiding plate comprises a main body and multiple pairs of grooves arranged along the bottom surface of the main body, each pair of grooves comprises a first groove and a second groove. The first groove and the second groove are arranged symmetrically about the normal line of the light guiding plate. According to the light guiding plate, the light-extraction amount of the light guiding plate along the front view direction can be improved.Type: ApplicationFiled: May 12, 2014Publication date: January 5, 2017Inventor: Jianyu CHANG
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Publication number: 20160341875Abstract: A backlight module is disclosed, which comprises a light guide plate having at least one incident light side; a light bar, adjacent to the incident light side; a plurality of quantum dot films, the quantum dot films are arranged between the light bar and the incident light side; wherein the light from the light bar goes through the quantum dot film and irradiates on the incident light side. A LCD device with the backlight module is further disclosed. A plurality of shorter quantum dot films are arranged between the light source and the incident light side of the light guide to replace one longer quantum dot film of the conventional art. And the manufacturing process of the short quantum dot film is simple with low cost, and the film does not have the rupturing issue to improve the safety and reliability of the quantum dot film.Type: ApplicationFiled: January 21, 2015Publication date: November 24, 2016Applicant: Shenzhen China Star Optoelectronics Technology Co. Ltd.Inventors: Jianyu CHANG, Hu HE, Qian CAO, Yong FAN, Sheng-jer CHANG CHIEN, Zuoyuan QIN
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Patent number: 9459393Abstract: The present invention provides a backlight module structure, which includes a backplane (1), a light guide plate (3) arranged inside the backplane (1), and at least two backlight sources (5) arranged inside the backplane (1). The backplane (1) includes a bottom board (11) and a plurality of side boards (13) perpendicularly connected to the bottom board (11). The light guide plate (3) includes at least two sub light guide plates (4) that are sequentially connected in such a way that a recess (33) is formed in a connection between two adjacent ones of the sub light guide plates (4). The recess (33) has an opening facing the bottom board (11). The bottom board (11) includes a protrusion (111) formed thereon to correspond to the recess (33). The at least two backlight sources (5) are mounted on the protrusion (111) and located between the recess (33) and the protrusion (111) so that the two backlight sources (5) emit lights respectively toward the two adjacent sub light guide plates (4).Type: GrantFiled: August 15, 2014Date of Patent: October 4, 2016Assignee: Shenzhen China Star Optoelectronics Technology Co., LtdInventor: Jianyu Chang
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Publication number: 20160245484Abstract: A backlight module and a display device are disclosed. The present disclosure relates to the technical field of display, whereby the technical problem of dark spots existing at the corners of the liquid crystal display device in the prior art can be solved. The backlight module comprises a reflective sheet and a plurality of light sources that are arranged on said reflective sheet, wherein the reflective sheet at edges and corners of said backlight module has a certain slope or curvature; and adjusting members, arranged at corners of said backlight module, so that the slope or curvature of the reflective sheet at the corners of said backlight module matches the slope or curvature of the reflective sheet at the edges of said backlight module.Type: ApplicationFiled: January 16, 2015Publication date: August 25, 2016Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventors: Qian Cao, Jianyu Chang
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Publication number: 20160041326Abstract: The present invention provides a backlight module structure, which includes a backplane (1), a light guide plate (3) arranged inside the backplane (1), and at least two backlight sources (5) arranged inside the backplane (1). The backplane (1) includes a bottom board (11) and a plurality of side boards (13) perpendicularly connected to the bottom board (11). The light guide plate (3) includes at least two sub light guide plates (4) that are sequentially connected in such a way that a recess (33) is formed in a connection between two adjacent ones of the sub light guide plates (4). The recess (33) has an opening facing the bottom board (11). The bottom board (11) includes a protrusion (111) formed thereon to correspond to the recess (33). The at least two backlight sources (5) are mounted on the protrusion (111) and located between the recess (33) and the protrusion (111) so that the two backlight sources (5) emit lights respectively toward the two adjacent sub light guide plates (4).Type: ApplicationFiled: August 15, 2014Publication date: February 11, 2016Applicant: Shenzhen China Star Optoelectronics Technology Co. Ltd.Inventor: Jianyu CHANG
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Patent number: 9256023Abstract: The present invention provides a backlight module and a liquid crystal display device using the backlight module. The backlight module includes a backplane (2), a light guide plate (4) arranged in the backplane (2), a backlight source (6) arranged in the backplane (2) at one side of the light guide plate (4), a light shielding film (8) mounted on the light guide plate (4) and the backplane (2) and located above the backlight source (6), and an optic film assembly (10) arranged on the light shielding film (8) and the light guide plate (4). The light shielding film (8) has an end fixedly connected to an upper surface of the light guide plate (4) and an opposite end fixedly connected to the backplane (2). The present invention provides an arrangement of a light shielding film above the backlight source to effectively prevent light leaking and enhance the optic quality of the backlight module.Type: GrantFiled: March 25, 2014Date of Patent: February 9, 2016Assignee: Shenzhen China Star Optoelectronics Technology Co., LtdInventor: Jianyu Chang
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Publication number: 20150362653Abstract: A backlight module includes a backplane, a light guide plate in the backplane, and at least a backlight source in the backplane. The backplane includes a bottom plate. The light guide plate is formed with at least a groove corresponding to the at least a backlight source at a location near a side edge of the light guide plate. An opening of the at least a groove is towards the bottom plate. The at least a backlight source is installed on the bottom plate of the backplane and correspondingly arranged in the at least a groove. A side of the at least a groove near the side edge of the light guide plate is formed with a side reflective sheet. The backlight module can improve the light coupling efficiency and light utilization, achieve the reduction of energy consumption and cost down, and is suitable for large-sized LCD device.Type: ApplicationFiled: July 2, 2014Publication date: December 17, 2015Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventor: Jianyu Chang
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Publication number: 20150301272Abstract: The present invention provides a backlight module and a liquid crystal display device using the backlight module. The backlight module includes a backplane (2), a light guide plate (4) arranged in the backplane (2), a backlight source (6) arranged in the backplane (2) at one side of the light guide plate (4), a light shielding film (8) mounted on the light guide plate (4) and the backplane (2) and located above the backlight source (6), and an optic film assembly (10) arranged on the light shielding film (8) and the light guide plate (4). The light shielding film (8) has an end fixedly connected to an upper surface of the light guide plate (4) and an opposite end fixedly connected to the backplane (2). The present invention provides an arrangement of a light shielding film above the backlight source to effectively prevent light leaking and enhance the optic quality of the backlight module.Type: ApplicationFiled: March 25, 2014Publication date: October 22, 2015Inventor: Jianyu CHANG