Patents Assigned to Hannstar Display Corporation
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Publication number: 20150145806Abstract: The invention relates to an in-cell touch display panel including a thin film transistor array substrate, a color filter substrate, a liquid crystal molecule layer, sensing driving electrodes and touch control sensing electrodes. The liquid crystal molecule layer is disposed between the thin film transistor substrate and the color filter substrate. The sensing driving electrodes are arranged in a first direction and disposed on the thin film transistor array substrate. The touch control sensing electrodes are arranged in a second direction and disposed on a surface of the color filter substrate farther away from the thin film transistor array. The data lines of a pixel array on the thin film transistor array are used as the sensing driving electrodes to cooperate with the touch control sensing electrodes to perform a touch sensing operation.Type: ApplicationFiled: February 20, 2014Publication date: May 28, 2015Applicant: HannStar Display CorporationInventors: Chun-Hsi CHEN, Jun-Shih CHUNG, Yu-Lung WANG
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Patent number: 9042509Abstract: An LCD and a bidirectional shift register device thereof are provided. The bidirectional shift register device of the invention is disposed on the substrate of the panel and includes multi-stages shift registers in series connection. Each stage shift register includes a pre-charging unit, a pull-up unit and a pull-down unit, in which the pre-charging unit receives a first preset clock signal and the output from a (i?1)th stage shift register or a (i+1)th stage shift register so as to thereby output a charging signal. The pull-up unit receives the charging signal and a second preset clock signal so as to thereby output a scan signal. The pull-down unit receives the second preset clock signal, a third preset clock signal and the output from the (i+2)th stage shift register or the (i?2)th stage shift register so as to decide whether or not pulling down the scan signal to a reference level.Type: GrantFiled: July 5, 2013Date of Patent: May 26, 2015Assignee: HannStar Display CorporationInventors: Chia-Hua Yu, Chien-Ting Chan, Chien-Chuan Ko, Chun-Lin Chang
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Patent number: 9036258Abstract: A display method of a two-dimensional and naked eye type stereoscopic switchable display device is disclosed. The two-dimensional and naked eye type stereoscopic switchable display device includes a two-dimensional and naked eye type stereoscopic switchable display module, at least one detection device and an indicator device. The two-dimensional and naked eye type stereoscopic switchable display module provides a plurality of stereoscopic image regions in a naked eye type stereoscopic display mode. Then, detect a viewer's position with the detection device. And, determine whether or not the viewer's position is in the stereoscopic image regions with the two-dimensional and naked eye type stereoscopic switchable display device. When the viewer locates in the stereoscopic image regions, the indicator device emits a first color light. When the viewer locates outside of the stereoscopic image regions, the indicator device emits a second color light.Type: GrantFiled: March 14, 2013Date of Patent: May 19, 2015Assignee: HANNSTAR DISPLAY CORPORATIONInventor: Chih-Hsuan Lee
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Patent number: 9035668Abstract: A touch testing system for a capacitive touch device and a method thereof are provided. The system includes a test fixture, at least one magnetization component, at least one magnetic induction component and a driving unit. The fixture is disposed on the touch device and has at least one chute on a position corresponding to the touching area. The magnetization component is disposed on the fixture and enabled by a driving signal to produce a magnetic force. The magnetic induction component is slidably disposed in the chute and inducts the magnetic force to slide along the chute, such that the sensing unit produces a touch testing information. The driving unit is coupled to the magnetization component and the sensing unit, provides the driving signal to enable the magnetization component and receives the touch testing information to feed back a testing result on the capacitive touch device accordingly.Type: GrantFiled: February 26, 2013Date of Patent: May 19, 2015Assignee: HannStar Display CorporationInventors: Chien-Hsiang Huang, Hui-Ju Chen
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Patent number: 9029882Abstract: An active device array substrate for saving material cost includes a substrate, scan lines, data lines, a thin film transistor, a color filter layer, a transparent conductive layer, an insulating layer and a pixel electrode. The color filter layer covers and contacts the scan lines, data lines and the thin film transistor. The transparent conductive layer is disposed on the color filter layer and electrically isolated from the scan lines, the data lines and the thin film transistor by the color filter layer. The insulating layer covers the transparent conductive layer. The pixel electrode is disposed on the insulating layer and connected to the thin film transistor.Type: GrantFiled: August 23, 2013Date of Patent: May 12, 2015Assignee: HannStar Display CorporationInventors: Chia-Hua Yu, Sung-Chun Lin, Chung-Lin Chang, Chien-Ting Chan, Hsuan-Chen Liu
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Publication number: 20150109353Abstract: A liquid crystal display and its bidirectional shift register device including N stages of shift registers are provided. An ith stage shift register of the shift registers includes a pre-charge unit, a pull-up unit and a pull-down unit. The pre-charge unit outputs a pre-charge signal according to outputs of (i?2)th and (i+2)th stage shift registers. The pull-up unit outputs a scan signal. A first discharge unit of the pull-down unit determines whether to pull the scan signal down to a reference voltage potential according to the pre-charge signal and a first voltage-dividing signal associated with a first level signal. A second discharge unit of the pull-down unit determines whether to pull the scan signal down to the reference voltage potential according to the pre-charge signal and a second voltage-dividing signal associated with a second level signal.Type: ApplicationFiled: January 10, 2014Publication date: April 23, 2015Applicant: Hannstar Display CorporationInventors: Chia-Hua Yu, Sung-Chun Lin, Hsuan-Chen Liu, Chien-Ting Chan
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Publication number: 20150102991Abstract: An LCD and bidirectional shift register apparatuses thereof are provided. One of the bidirectional shift register apparatuses includes Nth shift registers. An ith shift register includes a pre-charge unit, a pull-up unit and a pull-down unit. When i is greater than or equal to 3 and less than or equal to N?2, the pre-charge unit receives outputs of an (i?2)th and an (i+2)th shift register. When i is equal to 1 or 2, the pre-charge unit receives a first start pulse signal and the output of the (i+2)th shift register. When i is equal to (N?1) or N, the pre-charge unit receives a second start pulse signal and the output of the (i?2)th shift register. The pre-charge unit outputs a pre-charge signal. The pull-up unit outputs a scan signal. The pull-down unit receives the pre-charge signal to control a level of the scan signal.Type: ApplicationFiled: February 17, 2014Publication date: April 16, 2015Applicant: Hannstar Display CorporationInventors: Chia-Hua Yu, Sung-Chun Lin, Hsuan-Chen Liu, Chien-Ting Chan
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Publication number: 20150076486Abstract: The pixel structure includes a scan line, a data line, a thin-film transistor, a first electrode layer, a protective layer and a second electrode layer. The thin-film transistor is electrically connected to the scan line and the data line, and includes a gate, an oxide semiconductor layer, an insulating layer, a source and a drain. The first electrode layer is in the same layer as the oxide semiconductor layer, and is surrounded by the scan line and the data line. The second electrode layer is located on the first electrode layer, and the protective layer is located between the first electrode layer and the second electrode layer, wherein one of the first and second electrode layers is electrically connected to the thin-film transistor, and the other is connected to a common voltage. The second electrode layer includes a plurality of slits exposing an area of the first electrode layer.Type: ApplicationFiled: November 20, 2013Publication date: March 19, 2015Applicant: Hannstar Display CorporationInventors: Hsien-Tang Hu, Chang-Ming Chao, Mu-Kai Kang, Jui-Chi Lai
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Patent number: 8982303Abstract: A transflective type liquid crystal display comprises a first substrate with a reflective region and a transmission region. A gate region, an insulation layer and a semiconductor layer are sequentially formed on the first substrate. The semiconductor layer has a source region, a drain region and a channel region. A first dielectric layer is disposed on the semiconductor layer and has a through hole to expose a part of the drain region. A first common electrode is disposed on the first dielectric layer and the through hole to cover the exposed part of the drain region. A reflective electrode is disposed on the first dielectric layer located in the reflective region. A second dielectric layer is disposed on the first common electrode and the reflective electrode. A pixel electrode is disposed on the second dielectric layer and connected to the drain region via the through hole.Type: GrantFiled: July 8, 2013Date of Patent: March 17, 2015Assignee: HannStar Display CorporationInventors: Chia-Hua Yu, Hsien-Tang Hu, Ko-Ruey Jen, Jui-Chi Lai
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Patent number: 8970550Abstract: A touch panel that includes a first substrate, a touch sensing layer, a compensation pattern layer, a second substrate, and a first optical adhesive layer is provided. The touch sensing layer includes a plurality of electrode sets arranged in parallel, and each of the electrode sets includes a scan electrode and a plurality of sensing electrodes. An orthogonal projection of the touch sensing layer on the first substrate is not overlapped with an orthogonal projection of the compensation pattern layer on the first substrate. The compensation pattern layer and the touch sensing layer are located between the first substrate and the second substrate. The first optical adhesive layer is located between the first substrate and the second substrate. A touch display is also provided.Type: GrantFiled: August 12, 2013Date of Patent: March 3, 2015Assignee: HannStar Display CorporationInventors: Chia-Hua Yu, Yu-Cheng Lin, Ping-Yuan Su, Kun-Hua Tsai, Hsing-Ying Lee
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Publication number: 20150049257Abstract: A touch display apparatus including a display panel, a touch device layer, a first flexible circuit board and a second flexible circuit board is provided. The display panel includes a color filter substrate, an active device array substrate and a display medium layer. The active device array substrate is disposed above the color filter substrate. The display medium layer is disposed between the color filter substrate and the active device array substrate. The touch device layer is disposed on an outer surface of the active device array substrate. The first flexible circuit board is disposed on the outer surface and an edge of the active device array substrate and is electrically connected to the touch device layer. The second flexible circuit board is disposed on an inner surface opposite to the outer surface and the edge of the active device array substrate.Type: ApplicationFiled: October 13, 2013Publication date: February 19, 2015Applicant: Hannstar Display CorporationInventors: Chun-Pin Liu, Chin-Wei Lin
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Publication number: 20150042628Abstract: A gate driver is used to drive scan lines, a first scan line to a mth scan line. The m is a positive integer. The gate driver comprises driver units, a first driver unit to a mth driver unit, coupled with the first scan line to the mth scan line respectively. The driver units generate scan signals, a first scan signal to a mth scan signal, to drive the first scan line to the mth scan line respectively. The first driver unit, the second driver unit, the (m?1)th driver unit and the mth driver unit have the same circuit structure. The third driver unit and the (m?2)th driver unit have the same circuit structure. The fourth driver unit and the (m?3)th driver unit have the same circuit structure.Type: ApplicationFiled: April 23, 2014Publication date: February 12, 2015Applicant: HannStar Display CorporationInventors: Chun-Chin TSENG, Ya-Wen LEE, Wen-Zhe LIN, Kuo-Wen PAN
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Publication number: 20150002456Abstract: A touch-sensing liquid crystal display is provided and includes a display panel and a backlight module. The display panel includes a transistor substrate, a liquid crystal layer and a common electrode. The liquid crystal layer is disposed on the transistor substrate. The common electrode is disposed on the liquid crystal layer. The transistor substrate includes data lines, scan lines, pixel units and a shield layer. The data lines are used to receive first signals. The scan lines are used to receive second signals. The pixel units include pixel electrodes and transistor switches, in which the transistor switches are electrically connected to the data lines, the scan lines and the pixel electrodes. The shield layer is disposed between the pixel electrodes and the transistor switches. The backlight module is disposed on the display panel, in which the liquid crystal layer is sandwiched between the shield layer and the backlight module.Type: ApplicationFiled: May 16, 2014Publication date: January 1, 2015Applicant: HannStar Display CorporationInventors: Chia-Hua YU, Sung-Chun LIN, Chung-Lin CHANG, Chien-Ting CHAN, Hsuan-Chen LIU
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Publication number: 20150002787Abstract: A photovoltaic mobile device includes a backlight module and a liquid crystal display panel. The backlight module includes a plurality of light sources, a photovoltaic substrate, and a light guide plate. The light sources are disposed at a side of the light guide plate, and the light guide plate is disposed above the photovoltaic substrate. The liquid crystal display panel is disposed on the light guide plate. The photovoltaic substrate includes a plurality of strip type photovoltaic components.Type: ApplicationFiled: February 5, 2014Publication date: January 1, 2015Applicant: HannStar Display CorporationInventors: Chia-Shin WENG, Wei-Ren LO, Chao-Jung CHEN, Chien-Liang KUO, Chih-Pin LIN
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Publication number: 20140375906Abstract: A touch-sensing liquid crystal panel and a fabrication method thereof are provided. The touch-sensing liquid crystal panel includes a color filter substrate and a transistor substrate. In the fabrication method, at first, a first glass substrate is provided. Thereafter, a sensing matrix is formed on a first surface of the first glass substrate at a baking temperature. The sensing matrix is formed from indium tin oxide (ITO), and a sheet resistance of the sensing matrix is equal to or less than 30 ohm/square. Then, color filters and a common electrode are disposed on a second surface of the first glass substrate to form a color filter substrate, wherein the second surface is opposite to the first surface. Thereafter, the transistor substrate is provided and combined with the color filter substrate. Thereafter, a slimming process is performed to slim a second glass substrate of the transistor substrate.Type: ApplicationFiled: February 23, 2014Publication date: December 25, 2014Applicant: HannStar Display CorporationInventors: Hsu-Ho WU, Ping-Yuan SU, Yu-Cheng LIN, Hsing-Ying LEE, Kun-Hua TSAI
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Publication number: 20140368752Abstract: A touch-sensing liquid crystal panel is provided and includes a color filter substrate and a transistor substrate. The color filter substrate includes a first substrate, a sensing array, touch-sensing circuit contact pads, and color filters. The transistor substrate includes a second substrate and pixel units. In one embodiment, the first substrate has a first edge region and a second edge region having the same width. In another embodiment, the touch-sensing circuit contact pads are disposed at the first edge region and the second edge region of the first substrate, and each conductive pattern in the sensing array is connected to the touch-sensing circuit contact pads of the first edge region and the second edge region. In another embodiment, each conductive pattern of the sensing array includes two first conductive patterns and conductive pattern rows disposed between the first conductive patterns.Type: ApplicationFiled: April 2, 2014Publication date: December 18, 2014Applicant: HannStar Display CorporationInventors: Hsu-Ho WU, Yu-Cheng LIN, Ping-Yuan SU, Kun-Hua TSAI, Hsing-Ying LEE
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Patent number: 8901833Abstract: A light emitting diode (LED) driving circuit preventing light leakage issue. The LED driving circuit comprises an LED driver, a driving circuit module and a power supply. When an input voltage is much higher, a high frequency pulse width modulation signal is set to a low level to avoid a light leakage of the LED by turning off a metal oxide semiconductor field effect transistor (MOSFET), such that the input voltage is not limited by the light leakage of the LED. As a result, the input voltage can be increased sufficiently for further reducing a switching loss effectively.Type: GrantFiled: January 3, 2012Date of Patent: December 2, 2014Assignee: Hannstar Display CorporationInventors: Yu Tsai, Che-Yu Chuang
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Publication number: 20140333847Abstract: A touch panel that includes a first substrate, a touch sensing layer, a compensation pattern layer, a second substrate, and a first optical adhesive layer is provided. The touch sensing layer includes a plurality of electrode sets arranged in parallel, and each of the electrode sets includes a scan electrode and a plurality of sensing electrodes. An orthogonal projection of the touch sensing layer on the first substrate is not overlapped with an orthogonal projection of the compensation pattern layer on the first substrate. The compensation pattern layer and the touch sensing layer are located between the first substrate and the second substrate. The first optical adhesive layer is located between the first substrate and the second substrate. A touch display is also provided.Type: ApplicationFiled: August 12, 2013Publication date: November 13, 2014Applicant: Hannstar Display CorporationInventors: Chia-Hua Yu, Yu-Cheng Lin, Ping-Yuan Su, Kun-Hua Tsai, Hsing-Ying Lee
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Publication number: 20140313436Abstract: A touch-sensing liquid crystal panel and a fabrication method thereof are provided. The touch-sensing liquid crystal panel includes a color filter substrate, a transistor substrate, and a sensing matrix. In the fabrication method, at first, a first glass substrate is provided. Then, color filters and a common electrode are disposed on a first surface of the first glass substrate to form a color filter substrate. Thereafter, a transistor substrate is combined with the color filter substrate. Then, the glass substrates of the color filter substrate and the transistor substrate are slimed. Thereafter, a sensing layer is formed on a second surface of the first glass substrate, wherein the second surface is opposite to the first surface. Then, the sensing layer is baked to enable a sheet resistance of the sensing matrix to be equal to or less than 30 ohm/square. Thereafter, the sensing layer is patterned.Type: ApplicationFiled: January 15, 2014Publication date: October 23, 2014Applicant: HannStar Display CorporationInventors: Hsu-Ho WU, Ping-Yuan SU, Yu-Cheng LIN, Hsing-Ying LEE, Kun-Hua TSAI
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Patent number: 8860659Abstract: A display apparatus is disclosed. The display apparatus comprises a display panel and a parallax barrier plate. The parallax barrier plate includes a plurality of parallax barrier cells, wherein each of the parallax barrier cells comprises a receiver, a plurality of charged pigment particles and a switch electrode. The charged pigment particles are disposed in the receiver. The switch electrode is disposed at one side of the receiver for driving the charged pigment particles.Type: GrantFiled: December 6, 2011Date of Patent: October 14, 2014Assignee: Hannstar Display CorporationInventors: Wei-tong Shih, Chih-hung Tsai, Wen-chi Lin