Patents by Inventor Yao Chang Wang
Yao Chang Wang 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: 20240151999Abstract: A cholesterol liquid crystal display device integrated with solar modules includes a first transparent substrate, a second transparent substrate, a first cholesterol liquid crystal module and a solar module. The first cholesterol liquid crystal module is arranged between the first transparent substrate and the second transparent substrate. The solar module is arranged between the first transparent substrate and the first cholesterol liquid crystal module. Therefore, the cholesterol liquid crystal display device of the present invention does not need a backlight module. By combining the light transmission characteristics of the cholesterol liquid crystal display device with the coating process characteristics of the solar module, the cholesterol liquid crystal display device with energy conservation and environmental protection is formed.Type: ApplicationFiled: November 6, 2023Publication date: May 9, 2024Inventors: NIEN-CHIEH WANG, YAO-JEN HSIEH, CHI-CHANG LIAO
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Publication number: 20240154026Abstract: A semiconductor device includes a gate structure on a substrate, an offset spacer adjacent to the gate structure, a main spacer around the offset spacer, a source/drain region adjacent to two sides of the main spacer, a contact etch stop layer (CESL) adjacent to the main spacer, and an interlayer dielectric (ILD) layer around the CESL. Preferably, a dielectric constant of the offset spacer is higher than a dielectric constant of the main spacer.Type: ApplicationFiled: January 17, 2024Publication date: May 9, 2024Inventors: Te-Chang Hsu, Chun-Chia Chen, Yao-Jhan Wang
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Publication number: 20240071818Abstract: A semiconductor device and method of fabricating the same include a substrate, a first epitaxial layer, a first protection layer, and a contact etching stop layer. The substrate includes a PMOS transistor region, and the first epitaxial layer is disposed on the substrate, within the PMOS transistor region. The first protection layer is disposed on the first epitaxial layer, covering surfaces of the first epitaxial layer. The contact etching stop layer is disposed on the first protection layer and the substrate, wherein a portion of the first protection layer is exposed from the contact etching stop layer.Type: ApplicationFiled: September 22, 2022Publication date: February 29, 2024Applicant: UNITED MICROELECTRONICS CORP.Inventors: I-Wei Chi, Te-Chang Hsu, Yao-Jhan Wang, Meng-Yun Wu, Chun-Jen Huang
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Publication number: 20230176381Abstract: An augmented reality display system includes an image display, a linear polarization optical splitter, a phase delay sheet, a circular polarization optical reflector and a linear polarization absorption component. The image display provides a first beam with a first linear polarization direction, which is reflected by the linear polarization optical splitter to the phase delay sheet. The phase delay sheet converts the first beam into a second beam with a first circular polarization direction and transmits it to the circular polarization optical reflector. The circular polarization optical reflector converts the second beam into a third beam with a second round polarization direction and reflects it to the phase delay sheet. The phase delay sheet converts the third beam into a fourth beam with a second linear polarization direction, which passes through the linear polarization optical splitter and the linear polarization absorption component to form an image.Type: ApplicationFiled: April 19, 2022Publication date: June 8, 2023Inventors: RUIMIN DIAO, YAO CHANG WANG
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Publication number: 20230129270Abstract: An anti-reflection film structure comprising: a compensation film with reverse wavelength dispersion characteristics and a linear polarizer, the compensation film with reverse wavelength dispersion characteristics stretched from a monolithic polymer substrate, wherein the stretched monolithic polymer substrate has a thickness direction retardation value Rth(550), an in-plane retardation value Re(450) and an in-plane retardation value Re(550). Rth(550) is between 0 nm and 25 nm, and Re(450)/Re(550) is between 0.7 and 0.95. And the linear polarizer arranged on one side of the compensation film with reverse wavelength dispersion characteristics. In this anti-reflection film structure, the compensation film with reverse wavelength dispersion characteristics has an Nz coefficient of 0.5, and a single compensation film with reverse wavelength dispersion characteristics can achieve the effect of a conventional quarter-wavelength retardation film with a large viewing angle compensation film.Type: ApplicationFiled: January 5, 2022Publication date: April 27, 2023Inventors: RUIMIN DIAO, YAO CHANG WANG
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Patent number: 11474388Abstract: The present disclosure relates to a display panel. The display panel includes a first substrate, a second substrate, a display material layer, an active component layer, a color filter layer and a light source. The display material layer is disposed between the first substrate and the second substrate. The active component layer and the color filter layer are disposed between the first substrate and the display material layer. The light source is disposed on one side of the second substrate, and emits light. The light passes through the second substrate and the color filter layer and arrives at the first substrate, and is reflected by the first substrate and then enters the color filter layer. The light further passes through the color filter layer, enters the display material layer, passes through the display material layer, and is outputted to the exterior.Type: GrantFiled: July 15, 2021Date of Patent: October 18, 2022Assignee: SICHUAN LONGHUA FILM CO. LTD.Inventors: Po Hung Yao, Yao-Chang Wang, Erh-Ming Hsieh
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Publication number: 20220291435Abstract: A phase retardation film is applied to an organic light-emitting diode display device and includes a biaxially stretched polymer substrate and a liquid crystal layer. The polymer substrate has a positive wavelength dispersion characteristic. A thickness of the polymer substrate is between 5 ?m and 100 ?m. The liquid crystal layer is directly coated on the polymer substrate by a full coating process, and there is no adhesion layer between the liquid crystal layer and the polymer substrate. A thickness of the liquid crystal layer is between 0.4 ?m and 5 ?m. One of the polymer substrate and the liquid crystal layer has a phase retardation of ?/2, and the other has a phase retardation of ?/4. A compensation film using the phase retardation film is also provided.Type: ApplicationFiled: July 9, 2021Publication date: September 15, 2022Inventors: Ruimin DIAO, Yao Chang WANG, Yi-Ping HSIEH
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Patent number: 11385394Abstract: A front light source module includes a light guide assembly and a light source assembly. The light guide assembly includes a light guide body and surface optical microstructures. The light guide body includes a first optical surface, a second optical surface opposite to the first optical surface, and a light incident surface. The light incident surface is connected between the first and second optical surfaces. The first optical surface is close to a viewer. The surface optical microstructures are embedded in the light guide body. Each surface optical microstructure includes an inclined surface and a transflective layer. The inclined surface is relatively inclined to the first optical surface or the second optical surface. The transflective layer is disposed on the inclined surface. The light source assembly is disposed beside the light incident surface. A reflective display device adopting the front light source module is also provided.Type: GrantFiled: April 22, 2021Date of Patent: July 12, 2022Assignee: Sichuan Longhua Film Co., Ltd.Inventors: Po-Hung Yao, Yao-Chang Wang
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Publication number: 20220019104Abstract: The present disclosure relates to a display panel. The display panel includes a first substrate, a second substrate, a display material layer, an active component layer, a color filter layer and a light source. The display material layer is disposed between the first substrate and the second substrate. The active component layer and the color filter layer are disposed between the first substrate and the display material layer. The light source is disposed on one side of the second substrate, and emits light. The light passes through the second substrate and the color filter layer and arrives at the first substrate, and is reflected by the first substrate and then enters the color filter layer. The light further passes through the color filter layer, enters the display material layer, passes through the display material layer, and is outputted to the exterior.Type: ApplicationFiled: July 15, 2021Publication date: January 20, 2022Inventors: PO HUNG YAO, YAO-CHANG WANG, ERH-MING HSIEH
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Publication number: 20210373225Abstract: A front light source module includes a light guide assembly and a light source assembly. The light guide assembly includes a light guide body and optical microstructures. The light guide body includes a first optical surface, a second optical surface and a light incident surface. The first optical surface and the second optical surface are opposed to each other. The light incident surface is connected between the first optical surface and the second optical surface. The first optical surface is close to a viewer side. The optical microstructures are formed on at least one of the first optical surface and the second optical surface. Each optical microstructure has an inclined side surface relatively inclined to one of the first optical surface and the second optical surface. The light source assembly is disposed beside the light incident surface. A reflective display device having the front light source module is also provided.Type: ApplicationFiled: May 25, 2021Publication date: December 2, 2021Inventors: PO-HUNG YAO, YAO-CHANG WANG
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Publication number: 20210356642Abstract: A front light source module includes a light guide assembly and a light source assembly. The light guide assembly includes a light guide body and surface optical microstructures. The light guide body includes a first optical surface, a second optical surface opposite to the first optical surface, and a light incident surface. The light incident surface is connected between the first and second optical surfaces. The first optical surface is close to a viewer. The surface optical microstructures are embedded in the light guide body. Each surface optical microstructure includes an inclined surface and a transflective layer. The inclined surface is relatively inclined to the first optical surface or the second optical surface. The transflective layer is disposed on the inclined surface. The light source assembly is disposed beside the light incident surface. A reflective display device adopting the front light source module is also provided.Type: ApplicationFiled: April 22, 2021Publication date: November 18, 2021Inventors: PO-HUNG YAO, YAO-CHANG WANG
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Patent number: 10444500Abstract: A projection screen of a head-up display has a projection surface and a back surface opposite to the projection surface. The projection surface is used for receiving an image beam projected by an image projection component and reflecting part of the image beam. The projection screen includes a photochromic layer disposed on the transmission path of the image beam. When an ambient light irradiates the back surface of the projection screen, the transmittance of the photochromic layer decreases as the intensity of the ambient light increases.Type: GrantFiled: August 13, 2018Date of Patent: October 15, 2019Assignee: SICHUAN LONGHUA FILM CO., LTDInventors: Rui-Min Diao, Yao-Chang Wang
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Publication number: 20190064425Abstract: A light guide film includes at least one wedge-shaped light incident portion and a light exit sheet. The wedge-shaped light incident portion has a light incident side surface and a connection side opposite to the light incident side surface. A thickness at the light incident side surface of the wedge-shaped light incident portion is greater than a thickness at the connection side of the wedge-shaped light incident portion. The light exit sheet is connected to the connection side and extends from the connection side. The light exit sheet has a light exit surface. The wedge-shaped light incident portion protrudes from the light exit surface. The light incident side surface is for receiving a light. The light is emitted from the light exit surface. The light exit sheet and the wedge-shaped light incident portions are integrally formed into one.Type: ApplicationFiled: August 21, 2018Publication date: February 28, 2019Applicant: Sichuan Longhua Film Co., LtdInventors: Rui-Min Diao, Yao-Chang Wang
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Publication number: 20190056650Abstract: A projection screen of a head-up display has a projection surface and a back surface opposite to the projection surface. The projection surface is used for receiving an image beam projected by an image projection component and reflecting part of the image beam. The projection screen includes a photochromic layer disposed on the transmission path of the image beam. When an ambient light irradiates the back surface of the projection screen, the transmittance of the photochromic layer decreases as the intensity of the ambient light increases.Type: ApplicationFiled: August 13, 2018Publication date: February 21, 2019Applicant: Sichuan Longhua Film Co., LtdInventors: Rui-Min Diao, Yao-Chang Wang
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Publication number: 20180156955Abstract: A limiting viewing angle sheet comprises a substrate, a transparent layer and an opaque pattern. The transparent layer is disposed on the substrate, and comprises a top plane and a plurality of grooves formed on the top plane, wherein the width of each of the grooves is decreased from the top plane to the substrate. The opaque pattern is formed within the grooves, and comprises a top surface and a plurality of side planes, wherein the transparent layer is exposed from the top surface, and the side planes extend from the top surface. The opaque pattern comprised different included angels respectively between the top surface and two of the side planes.Type: ApplicationFiled: November 27, 2017Publication date: June 7, 2018Inventors: Rui-Min Diao, Yao-Chang Wang, Yi-Ping Hsieh
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Publication number: 20180157369Abstract: A flexible touch panel includes a display unit, a touch sensing unit and a protective layer. The touch sensing unit is bounded to the display unit, and includes two touch control circuit layers and a waveplate. The waveplate is disposed between two touch control circuit layers, and includes a first plane and a second plane opposite to the first plane. One of the touch control circuit layers is formed on the first plane. The protective layer is bounded to the touch sensing unit, and the touch sensing unit is disposed between the display unit and the protective layer.Type: ApplicationFiled: November 27, 2017Publication date: June 7, 2018Inventors: Rui-Min Diao, Yao-Chang Wang, Yi-Ping Hsieh
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Publication number: 20160126331Abstract: The present invention provides a metal gate structure which is formed in a trench of a dielectric layer. The metal gate structure includes a work function metal layer and a metal layer. The work function metal layer is disposed in the trench and comprises a bottom portion and a side portion, wherein a ratio between a thickness of the bottom portion and a thickness of the side portion is between 2 and 5. The trench is filled with the metal layer. The present invention further provides a method of forming the metal gate structure.Type: ApplicationFiled: November 26, 2014Publication date: May 5, 2016Inventors: Chi-Ju Lee, Yao-Chang Wang, Nien-Ting Ho, Chi-Mao Hsu, Kuan-Cheng Su, Main-Gwo Chen, Hsiao-Kwang Yang, Fang-Hong Yao, Sheng-Huei Dai, Tzung-Lin Li
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Patent number: 9331161Abstract: The present invention provides a metal gate structure which is formed in a trench of a dielectric layer. The metal gate structure includes a work function metal layer and a metal layer. The work function metal layer is disposed in the trench and comprises a bottom portion and a side portion, wherein a ratio between a thickness of the bottom portion and a thickness of the side portion is between 2 and 5. The trench is filled with the metal layer. The present invention further provides a method of forming the metal gate structure.Type: GrantFiled: November 26, 2014Date of Patent: May 3, 2016Assignee: UNITED MICROELECTRONICS CORP.Inventors: Chi-Ju Lee, Yao-Chang Wang, Nien-Ting Ho, Chi-Mao Hsu, Kuan-Cheng Su, Main-Gwo Chen, Hsiao-Kwang Yang, Fang-Hong Yao, Sheng-Huei Dai, Tzung-Lin Li
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Patent number: 9240459Abstract: A semiconductor process includes the following step. A stacked structure is formed on a substrate. A contact etch stop layer is formed to cover the stacked structure and the substrate. A material layer is formed on the substrate and exposes a top part of the contact etch stop layer covering the stacked structure. The top part is redressed.Type: GrantFiled: February 22, 2013Date of Patent: January 19, 2016Assignee: UNITED MICROELECTRONICS CORP.Inventors: Kuang-Hung Huang, Jie-Ning Yang, Yao-Chang Wang, Chi-Sheng Tseng, Po-Jui Liao, Shih-Chang Chang
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Patent number: 9147678Abstract: The present invention provides a structure of a resistor comprising: a substrate having an interfacial layer thereon; a resistor trench formed in the interfacial layer; at least a work function metal layer covering the surface of the resistor trench; at least two metal bulks located at two ends of the resistor trench and adjacent to the work function metal layer; and a filler formed between the two metal bulks inside the resistor trench, wherein the metal bulks are direct in contact with the filler.Type: GrantFiled: January 4, 2012Date of Patent: September 29, 2015Assignee: UNITED MICROELECTRONICS CORP.Inventors: Chih-Kai Kang, Sheng-Yuan Hsueh, Shu-Hsuan Chih, Po-Kuang Hsieh, Chia-Chen Sun, Po-Cheng Huang, Shih-Chieh Hsu, Chi-Horn Pai, Yao-Chang Wang, Jie-Ning Yang, Chi-Sheng Tseng, Po-Jui Liao, Kuang-Hung Huang, Shih-Chang Chang