Patents by Inventor Wei-Chih Chang
Wei-Chih 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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Publication number: 20190319014Abstract: A method for making a micro LED display panel not requiring high-accuracy or individual positioning includes providing a carrier substrate with micro LEDs, providing a TFT substrate including a driving circuit, and forming a conductive connecting element, an insulating layer, and a contact electrode layer on the TFT substrate. The insulating layer and the contact electrode layer are patterned to define a through hole, the first electrode is placed against the contact electrode layer, and different voltages Vref and Vdd are applied to the contact electrode layer and to the conductive connecting element respectively, creating an electrostatic attraction. The micro LEDs and the first electrode are transferred from the carrier substrate onto the TFT substrate; and the conductive connecting element is bonded to the first electrode. The method of making is simple. A micro LED display panel made by the method is also provided.Type: ApplicationFiled: April 11, 2019Publication date: October 17, 2019Inventors: WEI-CHIH CHANG, KUO-SHENG LEE, CHUNG-WEN LAI, PO-FU CHEN
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Publication number: 20190301971Abstract: An automatic system for processing and testing gears has a processing machine, a testing machine, and a robotic arm. The processing machine has a controller and a gear exchanging platform. The testing machine is connected to the processing machine via wired or wireless signals, and has a calculator and a testing platform. The calculator is connected to the controller via the wired or wireless signals, and the testing platform is electrically connected to the calculator. The robotic arm connects the processing machine and the testing machine, and has at least one claw that is able to move gears from the gear exchanging platform to the testing platform.Type: ApplicationFiled: April 2, 2018Publication date: October 3, 2019Inventors: Yao-Yi Tsai, Wei-Chih Chang, Chi-Lu Chen, Chung-Yo Lin
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Patent number: 10424622Abstract: A display device comprised of OLEDs and micro LEDs which allows for blue light degradation of the OLEDs includes a first substrate and a second substrate in a double-decked configuration. First light emitting elements are located and spaced on the first substrate and second light emitting elements are located and spaced on the second substrate, the light emitting elements on the lower deck being staggered so as not to be hidden by the light emitting elements on the upper deck. The upper deck has openings (or is transparent) therein to allow egress of light from the light emitting elements of the lower deck. The display device provides a solution for uneven display cause by degradation of pixels.Type: GrantFiled: July 4, 2018Date of Patent: September 24, 2019Assignee: HON HAI PRECISION INDUSTRY CO., LTD.Inventors: Chang-Ting Lin, Wei-Chih Chang, Ying-Chieh Chen, Chung-Wen Lai, Chun-Chieh Huang, Wei-Li Wang, Po-Yi Lu, Jen-Jie Chen, I-Wei Wu
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Patent number: 10347695Abstract: A display panel composed of red, green, blue, and white subpixels which avoids imaging artifacts is provided. The display panel defines a plurality of pixel units. Each pixel unit includes a complete red sub-pixel, a complete green sub-pixel, and a half-sized blue sub-pixel, and a half-sized white sub-pixel.Type: GrantFiled: March 13, 2018Date of Patent: July 9, 2019Assignee: HON HAI PRECISION INDUSTRY CO., LTD.Inventors: Wei-Chih Chang, Chung-Wen Lai, Hsin-Hua Lin, Kuo-Sheng Lee, Kuan-Hsien Jiang
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Publication number: 20190187516Abstract: A backlight module for an LCD display includes backlight units. Each backlight unit includes a backplane unit, a first reflecting unit on the backplane unit, and an LED on the backplane unit extending through the first reflecting unit. Each backlight unit further includes a second reflecting unit on a side of the first reflecting unit away from the backplane unit. The second reflecting unit is spaced apart from the first reflecting unit. The second reflecting unit includes at least one reflecting region and at least one transmitting region. The reflecting region reflects light, the transmitting region transmits light.Type: ApplicationFiled: December 19, 2018Publication date: June 20, 2019Inventors: WEI-CHIH CHANG, CHUNG-WEN LAI, CHIH-HAO CHANG, KUO-SHENG LEE
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Publication number: 20190187520Abstract: A backlight module for an LCD display includes backlight units. Each backlight unit includes a backplane unit, a first reflecting unit on the backplane unit, an LED on the backplane unit extending through the first reflecting unit, and a light guiding unit on a side of the LED and the first reflecting unit away from the backplane unit. The light guiding unit is transparent. Each backlight unit further includes a second reflecting unit on a side of the light guiding unit away from the backplane unit. The second reflecting unit includes at least one reflecting region and at least one transmitting region. The reflecting region reflects light; the transmitting region allows light to pass through. At least one backlight unit comprises a quantum dot layer.Type: ApplicationFiled: December 20, 2018Publication date: June 20, 2019Inventors: WEI-CHIH CHANG, I-MIN LU, KUAN-HSIEN JIANG
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Publication number: 20190187521Abstract: A lightweight and thin backlight module for an LCD display includes backlight units. Each backlight unit includes a backplane unit, a first reflecting unit on the backplane unit, and at least three LEDs on the backplane unit extending through the first reflecting unit, and a light guiding unit on the first reflecting unit away from the backplane unit. The light guiding unit is transparent. Each backlight unit further includes a second reflecting unit on a side of the light guiding unit away from the backplane unit. The second reflecting unit includes at least one reflecting region and at least one transmitting region. The reflecting region reflects light; the transmitting region allows light to pass through.Type: ApplicationFiled: December 20, 2018Publication date: June 20, 2019Inventors: WEI-CHIH CHANG, I-MIN LU, KUAN-HSIEN JIANG
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Publication number: 20190157341Abstract: A micro LED display panel able to display images from opposite surfaces includes a substrate, a pixel circuit layer on the substrate, an insulating layer on the pixel circuit layer, at least two micro LEDs on the insulating layer and embedded in the insulating layer, at least two first electrodes, and at least one second electrode. The pixel circuit layer includes at least two TFTs. Each micro LED includes a first end adjacent to the pixel circuit layer and a second end opposite to the first end and exposed from the insulating layer. Each first electrode is between the first end of each micro LED and the pixel circuit layer. The second electrode covers the second end of each micro LED and is transparent. Each first electrode defines a light transmitting region to allow light emitted from the micro LED to pass through.Type: ApplicationFiled: November 21, 2018Publication date: May 23, 2019Inventors: WEI-CHIH CHANG, CHUNG-WEN LAI
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Publication number: 20190027571Abstract: A method of providing a conducting structure over a substrate, which comprises: disposing a lower sub-layer over a substrate, the lower sub-layer comprising a conductive metal oxide material that includes indium and zinc, wherein the indium and zinc content in the bottom sub-layer substantially defines a first indium to zinc content ratio; performing a first hydrogen treatment over an exposed surface of the lower sub-layer for introducing hydrogen content therein; disposing a middle sub-layer over the lower sub-layer, the middle sub-layer comprising a metal material; disposing an upper sub-layer over the middle sub-layer, the upper sub-layer comprising a conductive metal oxide material that includes indium and zinc, wherein the indium and the zinc content in the upper sub-layer substantially defines a second indium to zinc content ratio smaller than the first indium to zinc content ratio; and patterning the multi-layered conductive structure to generate a composite lateral etch profile.Type: ApplicationFiled: December 10, 2016Publication date: January 24, 2019Applicants: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD, HON HAI PRECISION INDUSTRY CO., LTD.Inventors: HSIN-HUA LIN, PO-LI SHIH, YI-CHUN KAO, CHANG-CHUN WAN, WEI-CHIH CHANG, I-WEI WU
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Publication number: 20190027505Abstract: A semiconductor device comprises a multi-layered structure disposed over a substrate (101) and defining a composite lateral etch profile. The multi-layered structure includes a lower sub-layer (105-1) disposed over the substrate (101) and comprising a metal oxide material that includes indium and zinc, the indium and zinc content in the lower sub-layer (105-1) substantially defining a first indium to zinc content ratio; a middle sub-layer (105-2) disposed over the lower sub-layer (105-1) and comprising a metal material; an upper sub-layer (105-3) disposed over the middle sub-layer (105-2) and comprising a metal oxide material that includes indium and zinc, the indium to zinc content in the upper sub-layer (105-3) substantially defining a second indium to zinc content ratio smaller than the first indium to zinc content ratio; and a lateral byproduct layer formed over the lateral etched surface, comprising substantially an metal oxide of the metal material in the middle sub-layer (105-2).Type: ApplicationFiled: December 10, 2016Publication date: January 24, 2019Applicants: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.Inventors: Yi-Chun KAO, Hsin-Hua LIN, Po-Li SHIH, Wei-Chih CHANG, Imin LU, Iwei WU
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Publication number: 20190027506Abstract: A conductive layer for a thin film transistor (TFT) array panel includes a multi-layered portion defining a source electrode and a drain electrode of a TFT device, and includes a first sub-layer, a second sub-layer, a third sub-layer, and at least one additional sub-layer. The third and the first sub-layers include indium and zinc oxide materials. An indium to zinc content ratio in the first sub-layer is greater than that in the third sub-layer. An indium to zinc content ratio in the additional sub-layer is formulated between that in the first and the third sub-layers. The content ratio differentiation between the first and the third sub-layers affects a lateral etch profile associated with a gap generated in the second conductive layer between the source and the drain electrodes, where the associated gap width in the third sub-layer is wider than that in the first sub-layer.Type: ApplicationFiled: December 13, 2016Publication date: January 24, 2019Inventors: PO-LI SHIH, YI-CHUN KAO, HSIN-HUA LIN, CHIH-LUNG LEE, WEI-CHIH CHANG, I-MIN LU
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Publication number: 20190019870Abstract: A thin film transistor array panel includes a first conductive layer (102) including a gate electrode; a channel layer (104) disposed over the gate; and a second conductive layer (105) disposed over the channel layer (104). The second conductive layer (105) includes a multi-layered portion defining a source electrode (105a) and a drain electrode (105b), which includes a first sub-layer (105-1), a second sub-layer (105-2), and a third sub-layer (105-3) sequentially disposed one over another. Both the third and the first sub-layers (105-3, 105-1) include indium and zinc oxide materials. An indium to zinc content ratio in the first sub-layer (105-1) is greater than that in the third sub-layer (105-3).Type: ApplicationFiled: December 7, 2016Publication date: January 17, 2019Applicants: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.Inventors: YI-CHUN KAO, HSIN-HUA LIN, PO-LI SHIH, WEI-CHIH CHANG, I-MIN LU, I-WEI WU
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Publication number: 20190013305Abstract: A micro LED display panel includes a blue LED layer, a green LED layer, and a red LED layer. The blue LED layer, the green LED layer, and the red LED layer are in a stacked formation. The blue, the green, and the red LED layers each include a plurality of micro LEDs spaced apart from each other. The composition of the layers is such that light emitted from all but the bottom layer is able to pass through transparent material in other layers before exiting the panel and being viewed.Type: ApplicationFiled: June 25, 2018Publication date: January 10, 2019Inventors: WEI-CHIH CHANG, CHUNG-WEN LAI
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Publication number: 20190012012Abstract: A micro LED touch display pane of reduced thickness includes a substrate, a display driving layer, micro LEDs on the display driving layer, and common electrodes connecting to the micro LEDs. The micro LEDs are spaced apart from each other and coupled to the display driving layer. The common electrodes cover the micro LEDs. The touch display panel further includes first and second electrodes. The common electrodes and the first electrodes are defined in one layer, insulated from the second electrodes. The first electrodes and the second electrodes cooperatively form mutual-capacitance touch sensing structures.Type: ApplicationFiled: June 26, 2018Publication date: January 10, 2019Inventors: CHUNG-WEN LAI, WEI-CHIH CHANG
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Publication number: 20190013306Abstract: A micro LED display panel with enhanced display properties includes a substrate, a plurality of micro LEDs on the substrate, at least one common electrode, and a plurality of contact electrodes. Each micro LED includes top and bottom ends and a sidewall between them. The common electrode is coupled to the top end and a contact electrode is coupled to the bottom end. An adjustment electrode insulated from the other electrodes is formed on the sidewall of each of the plurality of micro LEDs; the adjustment electrode being fed with a DC voltage creates an electric field limiting the direction of flow of charge carriers within each micro LED and thereby improving performance.Type: ApplicationFiled: June 29, 2018Publication date: January 10, 2019Inventors: I-WEI WU, WEI-CHIH CHANG, CHUNG-WEN LAI, SHENG-HAN LI
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Publication number: 20190013365Abstract: A display device comprised of OLEDs and micro LEDs which allows for blue light degradation of the OLEDs includes a first substrate and a second substrate in a double-decked configuration. First light emitting elements are located and spaced on the first substrate and second light emitting elements are located and spaced on the second substrate, the light emitting elements on the lower deck being staggered so as not to be hidden by the light emitting elements on the upper deck. The upper deck has openings (or is transparent) therein to allow egress of light from the light emitting elements of the lower deck. The display device provides a solution for uneven display cause by degradation of pixels.Type: ApplicationFiled: July 4, 2018Publication date: January 10, 2019Inventors: CHANG-TING LIN, WEI-CHIH CHANG, YING-CHIEH CHEN, CHUNG-WEN LAI, CHUN-CHIEH HUANG, WEI-LI WANG, PO-YI LU, JEN-JIE CHEN, I-WEI WU
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Publication number: 20180374960Abstract: A high-performance TFT substrate (100) for a flat panel display includes a substrate (110), a first conductive layer (130) on the substrate (110), a semiconductor layer (103) positioned on the first conductive layer (130), and a second conductive layer (150) positioned on the semiconductor layer (103). The first conductive layer (130) defines a gate electrode (101). The second conductive layer (150) defines a source electrode (105) and a drain electrode (106) spaced apart from the source electrode (105). The second conductive layer (150) includes a first layer (151) on the semiconductor layer (103) and a second layer (152) positioned on the first layer (151). The first layer (151) can be made of metal oxide. The second layer (152) can be made of aluminum or aluminum alloy.Type: ApplicationFiled: December 6, 2016Publication date: December 27, 2018Applicants: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.Inventors: YI-CHUN KAO, PO-LI SHIH, WEI-CHIH CHANG, I-WEI WU
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Publication number: 20180275457Abstract: A display panel composed of red, green, blue, and white subpixels which avoids imaging artifacts is provided. The display panel defines a plurality of pixel units. Each pixel unit includes a complete red sub-pixel, a complete green sub-pixel, and a half-sized blue sub-pixel, and a half-sized white sub-pixel.Type: ApplicationFiled: March 13, 2018Publication date: September 27, 2018Inventors: WEI-CHIH CHANG, CHUNG-WEN LAI, HSIN-HUA LIN, KUO-SHENG LEE, KUAN-HSIEN JIANG
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Patent number: 10067390Abstract: An LCD panel includes a first substrate, a second substrate, a liquid crystal layer between the first substrate and the second substrate, and a plurality of spacers extending from the first substrate to the second substrate. Each spacer is positioned in the liquid crystal layer and has a height less than a thickness of the liquid crystal layer. No electrode for sensing touches is formed on the first substrate. The second substrate has a plurality of first touch sensor electrodes and a plurality of second touch sensor electrodes corresponding to the plurality of spacers. The first touch sensor electrodes and the second touch sensor electrodes cooperatively form a capacitive touch sensing structure. The spacers move towards the second substrate when the LCD panel is being touched.Type: GrantFiled: October 28, 2016Date of Patent: September 4, 2018Assignee: HON HAI PRECISION INDUSTRY CO., LTD.Inventors: Wei-Chih Chang, Chung-Wen Lai, Kuo-Sheng Lee
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Patent number: 10058955Abstract: A substrate packaging structure includes an upper substrate, a lower substrate, a frit disposed there between for adhering the upper substrate and the lower substrate, and a light-diffusing component. The light-diffusing component is disposed on the upper substrate and corresponding to the frit. The light-diffusing component is utilized for diffusing a laser beam.Type: GrantFiled: July 7, 2014Date of Patent: August 28, 2018Assignee: AU OPTRONICS CORPORATIONInventors: Chih-Hung Hsiao, Wei-Chih Chang, Chou-Chin Weng