Patents by Inventor Jih-Fon Huang
Jih-Fon Huang 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: 6778152Abstract: The present invention describes a method and apparatus of driving a plasma display panel that can reduce dynamic contour. The plasma display panel includes a plurality of scanning lines (for example, 600 scanning lines) Further, a subframe is completed by the three successive steps of resetting, scanning, and sustaining of scanning lines. Moreover, a full frame picture includes a plurality of subframes (for example, eight subframes in a gray plasma display panel with 256 colors). Each subframe sustains according to a predetermined ratio to obtain a plurality of colors. The present invention characterized by: first, dividing the scanning lines into a plurality of groups. Then, sustaining each group of subframes according to a different order in a full frame picture.Type: GrantFiled: September 1, 1999Date of Patent: August 17, 2004Assignee: AU Optronics Corp.Inventor: Jih Fon Huang
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Patent number: 6774875Abstract: A method for compensating luminance, suitable for use in a plasma display panel. The method includes the following steps. First, the luminance value of each pixel signal is read out. Then, the load of the pixel signal row is computed. The load is the number of pixel signal in the pixel signal row that the luminance value of the pixel signal is larger than a predetermined threshold luminance value. Then, a primary luminance compensation value is decided according to the load of the pixel signal row. A number of secondary luminance compensation values are decided according to the primary luminance compensation value. Afterwards, each pixel signal in the pixel signal row is performed luminance compensation sequentially. If the luminance value is larger than or equal to a low threshold luminance value, the luminance value is subtracted by the primary luminance compensation value.Type: GrantFiled: March 29, 2002Date of Patent: August 10, 2004Assignee: AU Optronics Corp.Inventors: Shu-Rong Tong, Tu-Hao Tsai, Jih-Fon Huang
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Publication number: 20040056827Abstract: A driving apparatus for driving a plasma display panel and a method of driving the same are disclosed. The plasma display panel includes multiple display cells, with each of the display cells comprising a sustain electrode, a scan electrode, and a data electrode. Every set of the electrodes has a corresponding driving circuit to provide a required driving waveform for driving the display cell to luminesce. The driving method includes the following steps: first, a first erase pulse, a priming pulse, and a second erase pulse are applied in sequence during a reset period. Then, data pulses corresponding to the display cells are applied during an address period. Lastly, multiple sustain pulses and multiple high frequency driving pulses are applied simultaneously during a sustain period.Type: ApplicationFiled: September 8, 2003Publication date: March 25, 2004Inventors: Horng-Bin Hsu, Yi-Mei Li, Jih-Fon Huang, Chem-Lin Chen
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Patent number: 6693608Abstract: A driving method for a plasma display panel. The plasma display panel has a plurality of plasma display units. Each unit includes a first and second electrode forming a capacitor-like load, and a passivation layer formed above the first and second electrodes. The plasma display unit is filled with a dischargeable gas that generates wall charges above the passivation layer after application of a potential difference by a driving circuit. The driving circuit includes a resonant unit electrically connected to the first electrode of the plasma display unit. Firstly, the driving circuit charges the resonant unit. Next, the driving circuit resonates the capacitor-like load of the plasma display unit together with the resonant unit. By using the smooth slope of a sinusoidal waveform, abrupt discharge between the first and second electrodes can be avoided.Type: GrantFiled: March 29, 2001Date of Patent: February 17, 2004Assignee: AU Optronics Corp.Inventors: Chen-Chang Liu, Jih-Fon Huang
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Publication number: 20040027068Abstract: An electrode pair structure of a plasma display panel (PDP). The electrode pair structure includes a first metal electrode, and a second metal electrode in parallel with the first metal electrode, installed on a front substrate. The first metal electrode and the second metal electrode are both composed of a series of hollow and hexagonal metal structures.Type: ApplicationFiled: April 14, 2003Publication date: February 12, 2004Inventors: Yu-Ting Chien, Jih-Fon Huang
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Patent number: 6686897Abstract: A plasma display panel having scanning electrodes (Y) and sustaining electrodes (X) arranged in the form of XX-YY-XX-YY . . . , a rib structure vertically crossing the scanning electrodes (Y) and sustaining electrodes (X). The priming discharges during reset period does not occur in the display areas of the plasma display panel, the picture quality is assured from avoiding the emission of over-brightness in the reset period which enables the sequential gaseous discharge operations to proceed with smaller driving voltage.Type: GrantFiled: November 12, 2001Date of Patent: February 3, 2004Assignee: AU Optronics Corp.Inventors: Jih Fon Huang, Shin-Tai Lo
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Patent number: 6677920Abstract: A PDP driving method, at the first timing point of a reset period, a global voltage difference is applied between the sustaining electrodes and the scanning electrodes, wherein the gaseous discharge occurs only in the non-display areas, called the dark areas. Because the discharge during reset period does not occur in the display areas, the picture quality is assured from avoiding the emission of over-brightness in the reset period which enables the sequential gaseous discharge operations to proceed with smaller driving voltage.Type: GrantFiled: March 16, 2001Date of Patent: January 13, 2004Assignee: AU Optronics Corp.Inventors: Jih-Fon Huang, Shin-Tai Lo
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Patent number: 6674417Abstract: A driving method for driving a plasma display unit of a plasma display panel. The plasma display unit includes two electrodes, and the plasma display unit is filled with ionized gas. A driving circuit drives the ionized gas back and forth between the two electrodes to cause the plasma display panel to emit light. The driving circuit includes a rating source receiver and an energy-storing current source whereby the rating source receiver is able to receive and supply a rating current. The driving method first involves the rating source receiver charging. A first electric potential difference thus occurs between the two electrodes of the plasma display unit to allow the ionized gas within the plasma display unit to discharge. While the ionized gas is discharging, the plasma display unit is supplied with a compensation current to prevent an electric potential difference drop.Type: GrantFiled: May 17, 2001Date of Patent: January 6, 2004Assignee: AU Optronics Corp.Inventors: Horng-Bin Hsu, Jih-Fon Huang
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Patent number: 6661395Abstract: A plasma display driving system. The system includes a controlling circuit, a scan driver, and a data driver. The controlling circuit outputs a first scan driving pulse and a second scan driving pulse, and a third scan driving pulse during addressing period. The frequency of the first scan driving pulse is higher than the second scan driving pulse, and the frequency of the second scan driving pulse is higher than the third scan driving pulse. The scan driver drives the first scanning electrodes, the second scanning electrodes, and the third scanning electrodes according to the first scan driving pulse, the second scan driving pulse, and the third scan driving pulse respectively. The data driver drives the first data electrodes, the second data electrodes, and the third data electrodes responding to the first scanning electrodes, the second scanning electrodes and the third scanning electrodes when the scanning electrodes are driven.Type: GrantFiled: July 11, 2002Date of Patent: December 9, 2003Assignee: AU Optronics Corp.Inventors: Lih-Shang Lo, Jih-Fon Huang, Bing-Ming Ho
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Patent number: 6657604Abstract: An energy recovery circuit of a plasma display panel is disclosed, which can drive the sustain electrode of the plasma display panel during the sustain period. The energy recovery circuit includes a voltage source which can store electrical energy, a first channel for raising the voltage of the sustain electrode to high potential, a second channel for pulling the voltage of the sustain electrode down to ground, and other auxiliary circuits. When the first channel is turned on, the voltage source can transmit electrical energy to the sustain electrode. When the second channel is turned on, the voltage source retrieves the electrical energy from the sustain electrode. Thereby the sustain electrode is driven between high potential and ground. Moreover, the first channel and the second channel can share a part of common channel.Type: GrantFiled: September 10, 2001Date of Patent: December 2, 2003Assignee: Au Optronics Corp.Inventors: Jih-Fon Huang, Yi-Min Huang, Sun-Chen Yang
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Publication number: 20030197662Abstract: A plasma display panel has a high open ratio. In the plasma display panel, the ribs are perpendicular to the address electrodes. In addition, a plurality of gaps or indentations are disposed on the transparent electrodes for reducing the influence of crosstalk. Further, by changing the number of address electrodes in the plasma display panel, the driving method can be simplified and the cost of the plasma display panel can be reduced. According to the invention, the plasma display panel can achieve a high open ratio, resulting in an improvement of the brightness.Type: ApplicationFiled: June 6, 2003Publication date: October 23, 2003Inventors: Jih-Fon Huang, Yu-Ting Chien
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Patent number: 6633269Abstract: A driving method during the reset period of a plasma display, which includes a display panel with a plurality of display units for sealing the inert gas. Each display unit forms an equivalent capacitor and includes a first electrode, a second electrode, and a driving circuit that exerts voltage pulses to the display units to form wall charges on the surfaces of the two electrodes or to reduce the wall charges that have been formed. The method involves applying a first soft erase pulse on the first electrodes of the plurality of display units to reduce the wall charges of the plurality of the display units followed by applying a soft priming pulse on the second electrodes of the plurality of display units to re-generate the wall charges of the plurality of display units.Type: GrantFiled: March 8, 2001Date of Patent: October 14, 2003Assignee: AU Optronics Corp.Inventors: Jih-Fon Huang, Chih-Lung Lin, Yu-Ting Chien, Shin-Tai Lo
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Publication number: 20030122735Abstract: A method for driving a plasma display panel (PDP). The PDP includes a first electrode and a second electrode. Initially provide the first electrode with a first voltage V1. Next, provide the second electrode with a second voltage V2 that is higher than the first voltage V1 during a first time interval. Then, provide the second electrode a third voltage V3 that is lower than the first voltage V1 during a second time interval. In the first time interval, a first voltage difference D1 between the first electrode and the second electrode equals the second voltage V2 minus the first voltage V1. During the second time interval, a second voltage difference D2 between the first electrode and the second electrode equals the third voltage V3 minus the first voltage V1.Type: ApplicationFiled: August 6, 2002Publication date: July 3, 2003Inventors: Jih-Fon Huang, Yi-Min Huang, Shin-Tai Lo
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Publication number: 20030107533Abstract: A plasma display panel (PDP) having a priming electrode is disclosed. The PDP has a first substrate and a second substrate, wherein the second substrate is opposite to the first substrate. The space between the first substrate and the second substrate is defined as a discharge space and is filled with a discharge gas. A sustaining electrode, a scanning electrode and a priming electrode are all positioned on the first substrate along a first direction. An address electrode is positioned on the second substrate perpendicularly with the first direction. The priming electrode outputs a first priming pulse so as to excite the discharge gas and to produce a plurality of discharge ions.Type: ApplicationFiled: December 6, 2002Publication date: June 12, 2003Inventor: Jih-Fon Huang
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Publication number: 20030057855Abstract: A plasma display driving system. The system includes a controlling circuit, a scan driver, and a data driver. The controlling circuit outputs a first scan driving pulse and a second scan driving pulse, and a third scan driving pulse during addressing period. The frequency of the first scan driving pulse is higher than the second scan driving pulse, and the frequency of the second scan driving pulse is higher than the third scan driving pulse. The scan driver drives the first scanning electrodes, the second scanning electrodes, and the third scanning electrodes according to the first scan driving pulse, the second scan driving pulse, and the third scan driving pulse respectively. The data driver drives the first data electrodes, the second data electrodes, and the third data electrodes responding to the first scanning electrodes, the second scanning electrodes and the third scanning electrodes when the scanning electrodes are driven.Type: ApplicationFiled: July 11, 2002Publication date: March 27, 2003Applicant: AU Optronics Corp.Inventors: Lih-Shang Lo, Jih-Fon Huang, Bing-Ming Ho
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Patent number: 6525469Abstract: A plasma display panel (PDP) has a front and a back substrate mounted together, with a gap between them. Barrier ribs are positioned within this space of this gap, and they define a series of discharge space groups. Each discharge space group has a first, second and third discharge space for red, green and blue emitting phosphors. Within these discharge spaces are traverse ribs. The lengths of these traverse ribs are adjusted to change the relative proportions of phosphor surface areas, and thus adjust the color temperature of the PDP.Type: GrantFiled: June 29, 2000Date of Patent: February 25, 2003Assignee: Au Optronics Corp.Inventors: Jih-Fon Huang, Yu-Ting Chien
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Publication number: 20020145575Abstract: A method for compensating luminance, suitable for use in a plasma display panel. The method includes the following steps. First, the luminance value of each pixel signal is read out. Then, the load of the pixel signal row is computed. The load is the number of pixel signal in the pixel signal row that the luminance value of the pixel signal is larger than a predetermined threshold luminance value. Then, a primary luminance compensation value is decided according to the load of the pixel signal row. A number of secondary luminance compensation values are decided according to the primary luminance compensation value. Afterwards, each pixel signal in the pixel signal row is performed luminance compensation sequentially. If the luminance value is larger than or equal to a low threshold luminance value, the luminance value is subtracted by the primary luminance compensation value.Type: ApplicationFiled: March 29, 2002Publication date: October 10, 2002Inventors: Shu-Rong Tong, Tu-Hao Tsai, Jih-Fon Huang
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Publication number: 20020130824Abstract: A plasma display panel having scanning electrodes (Y) and sustaining electrodes (X) arranged in the form of XX-YY-XX-YY . . . , a rib structure vertically crossing the scanning electrodes (Y) and sustaining electrodes (X). The priming discharges during reset period does not occur in the display areas of the plasma display panel, the picture quality is assured from avoiding the emission of over-brightness in the reset period which enables the sequential gaseous discharge operations to proceed with smaller driving voltage.Type: ApplicationFiled: November 13, 2001Publication date: September 19, 2002Applicant: AU Optronics Corp.Inventors: Jih Fon Huang, Shin-Tai Lo
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Patent number: 6433762Abstract: A method for driving a plasma display panel comprises the steps of reset, scanning and sustaining discharge. The plasma display panel has display lines comprising SCANNING and SUSTAINING electrodes disposed in parallel with each other, and addressing electrodes extending orthogonally to the SCANNING and SUSTAINING electrodes. The method is characterized in that the step of sustaining discharge is carried out by alternately applying a first driving pulse to the two SCANNING electrodes of each pair of the neighboring display lines and a second driving pulse to the two SUSTAINING electrodes of each pair of the neighboring display lines so that each two of the neighboring electrodes of two respective display lines are identical in polarity during the sustaining discharge.Type: GrantFiled: November 3, 1999Date of Patent: August 13, 2002Assignee: Acer Display Technology, Inc.Inventor: Jih Fon Huang
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Publication number: 20020057231Abstract: A driving method during the reset period of a plasma display, which includes a display panel with a plurality of display units for sealing the inert gas. Each display unit forms an equivalent capacitor and includes a first electrode, a second electrode, and a driving circuit that exerts voltage pulses to the display units to form wall charges on the surfaces of the two electrodes or to reduce the wall charges that have been formed. The method involves applying a first soft erase pulse on the first electrodes of the plurality of display units to reduce the wall charges of the plurality of the display units followed by applying a soft priming pulse on the second electrodes of the plurality of display units to re-generate the wall charges of the plurality of display units.Type: ApplicationFiled: March 8, 2001Publication date: May 16, 2002Inventors: Jih-Fon Huang, Chih-Lung Lin, Yu-Ting Chien, Shin-Tai Lo