Patents Assigned to Hannstar Display Corporation
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Publication number: 20240145653Abstract: A manufacturing method of a display device includes forming light emitting components on a first substrate, the light emitting components include a first side and a second side, and the second side is away from the first substrate; forming a circuit layer on the first substrate and on the second side of the light emitting components; forming a first protective layer on the circuit layer and forming an insulating layer on the first protective layer; removing the first substrate after forming a second substrate on the insulating layer; forming a black matrix layer on the first side of the light emitting components, and the black matrix layer includes openings; forming light conversion layers in the openings of the black matrix layer; forming a second protective layer on the black matrix layer and the light conversion layers; and forming a third substrate on the second protective layer.Type: ApplicationFiled: May 12, 2023Publication date: May 2, 2024Applicant: HANNSTAR DISPLAY CORPORATIONInventors: Chun-I Chu, Yu-Chi Chiao, Yung-Li Huang, Hung-Ming Chang, Cheng-Yu Lin, Huan-Hsun Hsieh, CHeng-Pei Huang
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Patent number: 11947208Abstract: This invention discloses a display panel including a first substrate, light emitting elements, a touch sensing structure and a conductive layer. The light emitting elements are disposed on the first substrate. The touch sensing structure is disposed on the first substrate and on a side away from a light emitting surface of the light emitting elements. The conductive layer is disposed between the light emitting elements and the first substrate and includes contacts or at least a portion of the touch sensing structure, and the light emitting elements and the contacts are electrically connected.Type: GrantFiled: August 15, 2022Date of Patent: April 2, 2024Assignee: HANNSTAR DISPLAY CORPORATIONInventors: Jing-Xuan Chen, Cheng-Yen Yeh, Mu-Kai Kang, Sz-Kai Huang, Ming-Chang Yu
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Publication number: 20240105098Abstract: A display device including a display panel is disclosed. The display panel includes a substrate, multiple scan lines, multiple data lines, multiple pixel structures, a first gate driving circuit, and a second gate driving circuit. The pixel structures are electrically connected to the scan lines and the data lines. Multiple first output stage circuits of the first gate driving circuit disposed in a peripheral area are electrically connected to the scan lines. Multiple second output stage circuits of the second gate driving circuit disposed in the peripheral area are electrically connected to the scan lines. A channel width of a first output transistor of the first output stage circuit is greater than a channel width of a second output transistor of the second output stage circuit.Type: ApplicationFiled: August 28, 2023Publication date: March 28, 2024Applicant: HannStar Display CorporationInventors: Jing-Xuan Chen, Yen-Chung Chen, Mu-Kai Kang, Qi-En Luo, Cheng-Yen Yeh
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Patent number: 11894385Abstract: An electronic device includes a flexible substrate and a driving component. In the flexible substrate, a first side region, a second side region and a first cutting structure are disposed in a peripheral region, wherein a display region and the first side region are separated by a first edge of the display region, the display region and the second side region are separated by a second edge of the display region, the first edge and the second edge are respectively parallel to a first direction and a second direction perpendicular to the first direction, the first cutting structure has a first endpoint and two edges separated by the first endpoint and respectively belonging to the first side region and the second side region. The driving component overlaps the flexible substrate in a top view direction perpendicular to the first direction and the second direction.Type: GrantFiled: July 29, 2022Date of Patent: February 6, 2024Assignees: HannStar Display (Nanjing) Corporation, HANNSTAR DISPLAY CORPORATIONInventor: Yen-Chung Chen
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Publication number: 20230411407Abstract: A display panel including a substrate, scan lines, data lines, and pixel structures is provided. The pixel structures are electrically connected to the data lines and the scan lines. Each pixel structure includes an active device, a pixel electrode, a capacitor electrode, a common electrode, an overcoat layer, a first passivation layer and a second passivation layer. The active device is electrically connected to the pixel electrode. The capacitor electrode is electrically connected to the pixel electrode. The common electrode is located between the capacitor electrode and the pixel electrode. The common electrode, the capacitor electrode and the pixel electrode overlap with each other. The overcoat layer is disposed between the common electrode and the first passivation layer. The second passivation layer is disposed between the common electrode and the pixel electrode.Type: ApplicationFiled: May 9, 2023Publication date: December 21, 2023Applicant: HannStar Display CorporationInventors: Cheng-Yen Yeh, Yen-Chung Chen, Mu-Kai Kang, Jing-Xuan Chen, Qi-En Luo
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Publication number: 20230395610Abstract: A thin film transistor includes a substrate, a gate, a gate insulating layer, a semiconductor layer, a first conductive layer, a covering layer and a sidewall protection layer. The gate is disposed on the substrate, the gate insulating layer is disposed on the gate, and the semiconductor layer is disposed on the gate insulating layer. The first conductive layer is disposed on the semiconductor layer, and the first conductive layer includes copper. The covering layer is disposed on an upper surface of the first conductive layer, and the covering layer includes copper nitride. The sidewall protection layer is disposed on a side surface of the first conductive layer, and the sidewall protection layer includes copper nitride.Type: ApplicationFiled: May 4, 2023Publication date: December 7, 2023Applicant: HANNSTAR DISPLAY CORPORATIONInventors: Chiung-Chang Wu, Jeng-Long Sheu, Yu-Kai Chuang
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Patent number: 11836310Abstract: A touch display apparatus is disclosed, which includes a touch display panel with an active area and a peripheral area. The touch display panel includes a substrate, touch electrodes, touch sensing lines, dummy touch sensing lines and transistors. The touch electrodes are disposed on the substrate and in the active area. Each touch sensing line is electrically connected to one of the touch electrodes. The touch sensing lines and the dummy touch sensing lines are in parallel with each other in the active area. The dummy touch sensing lines are electrically connected with each other. Each transistor has a first terminal, a second terminal and a control terminal. The first terminals of the transistors are electrically connected with each other, the second terminal of each transistor is electrically connected to one of the touch sensing lines, and the control terminals of the transistors are electrically connected with each other.Type: GrantFiled: October 24, 2022Date of Patent: December 5, 2023Assignee: HannStar Display CorporationInventors: Sz-Kai Huang, Cheng-Yen Yeh, Mu-Kai Kang, Jing-Xuan Chen
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Patent number: 11815771Abstract: A display panel includes a first substrate and multiple pixel structures. The pixel structure includes at least one active element, at least one pixel electrode, a first common electrode, and a second common electrode. The at least one pixel electrode includes a first sub-electrode, a second sub-electrode, and a third sub-electrode. The first sub-electrode is electrically connected to one of the at least one corresponding active element and the second sub-electrode. The third sub-electrode is electrically connected to the second sub-electrode. The first sub-electrode, the second sub-electrode, and the third sub-electrode are different layers. The first common electrode is disposed between the first sub-electrode and the first substrate, and overlaps the first sub-electrode. The second common electrode is disposed between the first sub-electrode and the third sub-electrode, and overlaps the first sub-electrode and the third sub-electrode.Type: GrantFiled: October 13, 2022Date of Patent: November 14, 2023Assignee: HannStar Display CorporationInventors: Mu-Kai Kang, Cheng-Yen Yeh, Sz-Kai Huang, Jing-Xuan Chen, Yen-Chung Chen
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Publication number: 20230333419Abstract: A viewing angle switching module includes a first viewing angle controlling device, a second viewing angle controlling device, a first polarizer, and a second polarizer. The first viewing angle controlling device includes a first alignment layer, a second alignment layer, and a first liquid crystal layer. The second viewing angle controlling device includes a third alignment layer, a fourth alignment layer, and a second liquid crystal layer. The first polarizer is disposed on a side of the first viewing angle controlling device, and an axial direction of a first absorption axis thereof is perpendicular or parallel to a first alignment direction of the first alignment layer. The second polarizer is disposed on a side of the second viewing angle controlling device, and an axial direction of a second absorption axis thereof is perpendicular or parallel to a third alignment direction of the third alignment layer. A display apparatus including the same is also disclosed.Type: ApplicationFiled: December 15, 2022Publication date: October 19, 2023Applicant: HannStar Display CorporationInventors: Chun Yen Lai, Wei-Chih Hsu, Yen-Chung Chen
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Patent number: 11772363Abstract: The disclosure provides an electromagnetic shielding substrate including a first substrate and an auxiliary layer. The auxiliary layer is disposed on the first substrate and directly contacts the first substrate. The auxiliary layer includes a first sublayer and a second sublayer. The second sublayer is connected between the first sublayer and the first substrate. The chemical ingredient of the first sublayer is MxOy, and the chemical ingredient of the second sublayer is MxOz, and M is selected from one of Nb, Mo, Ta, Te, Ti, Tl, Y, Yb, Zr, and Zn, where x and y are positive integers, and y?1<z<y. A display panel using the above electromagnetic shielding substrate is also provided.Type: GrantFiled: August 19, 2021Date of Patent: October 3, 2023Assignee: HannStar Display CorporationInventors: Yao-Chih Chuang, Chia-Yu Liu, Chih-Wei Chen, Mei-Ling Chou, Ming-Liang Chen
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Patent number: 11754867Abstract: A privacy device and a privacy display apparatus are provided. The privacy device includes a first substrate, a first privacy electrode, first to fourth pads, a connection electrode, a second substrate, a liquid-crystal layer, a second privacy electrode, and a sealant. The first privacy electrode and the connection electrode are disposed on the first substrate. The first and second pads are coupled to the first privacy electrode. The third and fourth pads are coupled to the connection electrode. The first and second pads are disposed between the third pad and the fourth pad. The liquid-crystal layer and the sealant are disposed between the first substrate and the second substrate. The sealant includes multiple conductors. The connection electrode, the sealant, and the second privacy electrode are in a non-display area and overlap with each other along a direction perpendicular to a top surface of the first substrate.Type: GrantFiled: February 21, 2023Date of Patent: September 12, 2023Assignee: HannStar Display CorporationInventors: Guang-Shiung Chao, Hsuan-Chen Liu, Ling-Chih Kao
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Patent number: 11749147Abstract: A method for testing a touch display panel includes: dividing a frame period of the image into a first subframe period and a second subframe period; transmitting pixel data to some subpixels corresponding to a touch sensing electrode in the first subframe period; and transmitting pixel data to the other subpixels corresponding to the touch sensing electrode in the second subframe period. The number of the subpixels receiving pixel data of positive polarity in the some subpixels subtracted by the number of the subpixels receiving pixel data of negative polarity in the some subpixels is defined as a first value, the number of the subpixels receiving pixel data of positive polarity in the other subpixels subtracted by the number of the subpixels receiving pixel data of negative polarity in the other subpixels is defined as a second value, and a sum of the first and second values is 0.Type: GrantFiled: September 27, 2021Date of Patent: September 5, 2023Assignee: HannStar Display CorporationInventor: Ya-Wen Lee
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Patent number: 11700764Abstract: The invention provides a flexible panel and a method of fabricating the same. The flexible panel includes a flexible substrate, an overcoat layer and a device layer. The overcoat layer is disposed over and directly contacting the flexible substrate. The device layer is disposed over the overcoat layer. In the invention, the flexible substrate can be directly formed on the carrier, such that an additional layer that helps release between the carrier and the flexible substrate may not be needed, and the flexible substrate can be separated from the carrier by the overcoat layer thereon, thereby reducing the production costs and ensure the quality of the flexible panel.Type: GrantFiled: December 4, 2020Date of Patent: July 11, 2023Assignee: HannStar Display CorporationInventors: Yen-Chung Chen, Mei-Ling Chou, Chia-Yu Liu
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Patent number: 11687189Abstract: A touch display device is disclosed. The touch display device includes a substrate, a scan line, a data line, a scan signal line, a thin film transistor, a touch signal line and a touch electrode. The scan line, the data line, the scan signal line, the thin film transistor, the touch signal line and the touch electrode are disposed on the substrate. An extending direction of the scan line is different from an extending direction of the data line, and the scan line and the data line are electrically connected to the thin film transistor. An extending direction of the scan signal line is different from the extending direction of the scan line, and the scan signal line is electrically connected to the scan line. The touch signal line is electrically connected to the touch electrode.Type: GrantFiled: November 9, 2021Date of Patent: June 27, 2023Assignee: HANNSTAR DISPLAY CORPORATIONInventors: Sz-Kai Huang, Cheng-Yen Yeh, Mu-Kai Kang, Jing-Xuan Chen
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Patent number: 11687185Abstract: A touch display panel, including a pixel circuit substrate, a color filter substrate, and a display medium layer, is provided. The pixel circuit substrate includes pixel structures, data lines, touch sensing electrodes, touch signal lines, and at least one test circuit. Each pixel structure has an active element and a pixel electrode. The data lines are electrically connected to active elements. The touch sensing electrodes are overlapped with pixel electrodes. The touch signal lines are electrically connected to the touch sensing electrodes. The test circuit is electrically connected to at least part of the touch signal lines or the data lines and includes a peripheral line and first and second test pads. The first and second test pads are respectively disposed on a first side and a second side of a display area. The display medium layer is disposed between the pixel circuit substrate and the color filter substrate.Type: GrantFiled: July 13, 2022Date of Patent: June 27, 2023Assignee: HannStar Display CorporationInventors: Biing Nan Lin, Ya-Wen Lee, Hung Ling Hsieh, Jen Fu Wu
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Publication number: 20230147751Abstract: A display panel includes a first substrate and multiple pixel structures. The pixel structure includes at least one active element, at least one pixel electrode, a first common electrode, and a second common electrode. The at least one pixel electrode includes a first sub-electrode, a second sub-electrode, and a third sub-electrode. The first sub-electrode is electrically connected to one of the at least one corresponding active element and the second sub-electrode. The third sub-electrode is electrically connected to the second sub-electrode. The first sub-electrode, the second sub-electrode, and the third sub-electrode are different layers. The first common electrode is disposed between the first sub-electrode and the first substrate, and overlaps the first sub-electrode. The second common electrode is disposed between the first sub-electrode and the third sub-electrode, and overlaps the first sub-electrode and the third sub-electrode.Type: ApplicationFiled: October 13, 2022Publication date: May 11, 2023Applicant: HannStar Display CorporationInventors: Mu-Kai Kang, Cheng-Yen Yeh, Sz-Kai Huang, Jing-Xuan Chen, Yen-Chung Chen
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Patent number: 11644913Abstract: A touch display device includes a display panel, a conductive layer, an optical matching layer and a buffer layer. The display panel comprises a first substrate, a second substrate and a display medium layer. The first substrate comprises a first surface and a second surface, the second substrate is disposed opposite to the first substrate, and the display medium layer is disposed between the second surface of the first substrate and the second substrate. The conductive layer is disposed on the first surface of the first substrate, and comprises a plurality of sensing electrodes. The optical matching layer is disposed between the conductive layer and the first surface of the first substrate. The buffer layer with a thickness greater than or equal to 50 ? and less than or equal to 3000 ? is disposed between the optical matching layer and the first surface of the first substrate.Type: GrantFiled: April 14, 2021Date of Patent: May 9, 2023Assignee: HANNSTAR DISPLAY CORPORATIONInventors: Tzung-Hsien Hsu, Chih-Wei Chen, Mei-Ling Chou, Chia-Yu Liu, Yao-Chih Chuang
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Patent number: 11644923Abstract: The present invention provides a touch display panel. The substrate includes a display region and a non-display region. The first conductive pads, the second conductive pads, the first conductive lines and the second conductive lines are disposed in the non-display region. The first conductive lines are electrically connected to the first conductive pads and the sub-pixels in the display region. The second conductive lines are electrically connected to the second conductive pads and the touch electrodes in the display region. The second conductive line includes a first line segment, a second line segment and a third line segment. The first line segment extends in a first direction and is connected to the second conductive pad. The second line segment extends from the non-display region to the display region. The third line segment extends in a second direction and is connected to the first line segment and the second line segment.Type: GrantFiled: April 27, 2022Date of Patent: May 9, 2023Assignee: HANNSTAR DISPLAY CORPORATIONInventors: Mu-Kai Kang, Jing-Xuan Chen, Cheng-Yen Yeh, Sz-Kai Huang
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Publication number: 20230129882Abstract: A touch display device including a substrate, a touch structure, a plurality of light emitting elements and a reflection layer is provided by the present invention. The substrate includes a first surface and a second surface opposite to the first surface. The touch structure includes a plurality of first touch electrodes disposed on the first surface of the substrate. The light emitting elements are disposed on the second surface of the substrate, and one of the light emitting elements includes a light emitting surface and a bottom surface opposite to the light emitting surface. The reflection layer is disposed on the second surface of the substrate. The light emitting elements are disposed between the reflection layer and the substrate, and the light emitting surface of one of the light emitting elements is disposed between the bottom surface and the reflection layer.Type: ApplicationFiled: October 3, 2022Publication date: April 27, 2023Applicant: HANNSTAR DISPLAY CORPORATIONInventors: Yao-Chih Chuang, Chia-Yu Liu, Chih-Wei Chen, Ming-Liang Chen
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Patent number: 11635838Abstract: A touch display device including a substrate, a touch structure, a plurality of light emitting elements and a reflection layer is provided by the present invention. The substrate includes a first surface and a second surface opposite to the first surface. The touch structure includes a plurality of first touch electrodes disposed on the first surface of the substrate. The light emitting elements are disposed on the second surface of the substrate, and one of the light emitting elements includes a light emitting surface and a bottom surface opposite to the light emitting surface. The reflection layer is disposed on the second surface of the substrate. The light emitting elements are disposed between the reflection layer and the substrate, and the light emitting surface of one of the light emitting elements is disposed between the bottom surface and the reflection layer.Type: GrantFiled: October 3, 2022Date of Patent: April 25, 2023Assignee: HANNSTAR DISPLAY CORPORATIONInventors: Yao-Chih Chuang, Chia-Yu Liu, Chih-Wei Chen, Ming-Liang Chen