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公开(公告)号：US10593243B2
公开(公告)日：2020-03-17
申请号：US15973493
申请日：2018-05-07
IPC分类号： G09G3/00 , G09G3/3233
摘要： A display apparatus including a display panel, a display driver, a controller and an external circuit is introduced. The display drive includes a power circuit that supplies a first voltage and a second voltage to the display panel to sense a plurality of sensing currents flowing through the display panel according to the first voltage and the second voltage in a first operating mode. The display driver receives the plurality of sensing currents and a target current from the display panel in the first operating mode. The controller is coupled to the display driver and configured to determine a plurality of offsets according to the plurality of sensing currents and the target current in the first operating mode. The external memory is coupled to the controller and the display driver to store the offsets in the first operating mode. The display driver and a method adapted to a display apparatus are also introduced.
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公开(公告)号：US20140132327A1
公开(公告)日：2014-05-15
申请号：US13831746
申请日：2013-03-15
发明人： Jen-Hao Liao
IPC分类号： H03K5/08
CPC分类号： H03K5/088
摘要： A charge pump module including a ratio control circuit and a charge pump circuit is provided. The ratio control circuit provides a boost ratio based on a control signal. The ratio control circuit includes at least two ratio generation circuits having different boost ratios. The ratio control circuit dynamically switches between the ratio generation circuits to adjust the provided boost ratio based on the control signal. The charge pump circuit is coupled to the ratio control circuit. The charge pump circuit receives an input voltage and converts the input voltage into an output voltage based on the boost ratio provided by the ratio control circuit. Furthermore, a voltage generation method of a charge pump module is also provided.
摘要翻译： 提供了包括比率控制电路和电荷泵电路的电荷泵模块。 比率控制电路基于控制信号提供升压比。 比率控制电路包括具有不同增益比的至少两个比例产生电路。 比率控制电路在比例生成电路之间动态地切换，以基于控制信号调整所提供的增益比。 电荷泵电路耦合到比率控制电路。 电荷泵电路接收输入电压，并且基于由比率控制电路提供的升压比将输入电压转换成输出电压。 此外，还提供了电荷泵模块的电压产生方法。
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公开(公告)号：US11151944B2
公开(公告)日：2021-10-19
申请号：US16802578
申请日：2020-02-27
发明人： Yung-Yu Hsieh , Tse-Yuan Chen , Jen-Hao Liao , Chun-Hsiao Teng , Chia-Wei Chang
IPC分类号： G09G3/3266 , G09G3/3291
摘要： A driving circuit, a display apparatus and a driving method thereof are provided. The display panel is divided into a plurality of regions including a first region having a rectangular form and a second region having a free form. The driving circuit generates a plurality of control clocks having a first duty cycle during a first period and a second duty cycle different from the first duty cycle during a second period, or having a first phase shift during the first period and a second phase shift different from the first phase shift during the second period, or having a first driving capability during the first period and a second driving capability different from the first driving capability during the second period. Wherein, the control clocks are configured to be transmitted to a gate driving circuit disposed on the display panel for generating a first plurality of scan signals controlling the first region and a second plurality of scan signals controlling the second region according to the control clocks, so as to reduce a luminance difference between the first region and the second region.
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公开(公告)号：US20200273409A1
公开(公告)日：2020-08-27
申请号：US16802578
申请日：2020-02-27
发明人： Yung-Yu Hsieh , Tse-Yuan Chen , Jen-Hao Liao , Chun-Hsiao Teng , Chia-Wei Chang
IPC分类号： G09G3/3266 , G09G3/3291
摘要： A driving circuit, a display apparatus and a driving method thereof are provided. The display panel is divided into a plurality of regions including a first region having a rectangular form and a second region having a free form. The driving circuit generates a plurality of control clocks having a first duty cycle during a first period and a second duty cycle different from the first duty cycle during a second period, or having a first phase shift during the first period and a second phase shift different from the first phase shift during the second period, or having a first driving capability during the first period and a second driving capability different from the first driving capability during the second period. Wherein, the control clocks are configured to be transmitted to a gate driving circuit disposed on the display panel for generating a first plurality of scan signals controlling the first region and a second plurality of scan signals controlling the second region according to the control clocks, so as to reduce a luminance difference between the first region and the second region.
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公开(公告)号：US20190221175A1
公开(公告)日：2019-07-18
申请号：US16247595
申请日：2019-01-15
发明人： Jen-Wei Li , Jen-Hao Liao
IPC分类号： G09G3/36 , G09G3/3258
摘要： A source driver and an operation method thereof are provided. The source driver includes a chopper circuit and a source driver circuit. A first sub-pixel and a second sub-pixel are temporally or spatially adjacent to each other. The chopper circuit adds original gray-scale data of the first sub-pixel with a first value to serve as new gray-scale data of the first sub-pixel and deducts original gray-scale data of the second sub-pixel by a second value to serve as new gray-scale data of the second sub-pixel. The source driver circuit generates a first driving voltage for the first sub-pixel according to the new gray-scale data of the first sub-pixel and generates a second driving voltage for the second sub-pixel according to the new gray-scale data of the second sub-pixel.
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公开(公告)号：US12131716B1
公开(公告)日：2024-10-29
申请号：US18488994
申请日：2023-10-17
发明人： Wei-Jen Lai , Jen-Hao Liao
IPC分类号： G09G3/36
CPC分类号： G09G3/3677 , G09G2310/08 , G09G2330/021
摘要： A gate line driver is provided and includes first to second transistors and first to third switches. The first transistor and the second transistor are coupled in series between a first voltage terminal and a second voltage terminal. The first switch has a first terminal coupled to a first node between the first and second transistors. The second switch has a first terminal coupled to a third voltage terminal and a second terminal coupled to a second terminal of the first switch at a second node. The third switch has a first terminal coupled to the third voltage terminal, a second terminal coupled to the first node, and a third terminal coupled to the second node.
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公开(公告)号：US20200312208A1
公开(公告)日：2020-10-01
申请号：US16365711
申请日：2019-03-27
发明人： Jen-Wei Li , Jen-Hao Liao
IPC分类号： G09G3/20
摘要： A display driver that includes a first driver integrated circuit being cascaded to a second driver integrated circuit is introduced. The first driver integrated circuit includes a first gamma voltage generator that is configured to output a plurality of first gamma voltages to output terminals of the first gamma voltage generator. The second driver integrated circuit includes a second gamma voltage generator that is configured to output a plurality of second gamma voltages to output terminals of the second gamma voltage generator. Each of the output terminals of the first gamma voltage generator is corresponded to one of the output terminals of the gamma voltage generator. At least one of the output terminals of the first gamma voltage generator is electrically coupled to the corresponding one of the output terminals of the second gamma voltage generator to output at least one common gamma voltage of the first gamma voltages and the second gamma voltages. A method adapted to the display driver is also introduced.
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公开(公告)号：US20190340965A1
公开(公告)日：2019-11-07
申请号：US15973493
申请日：2018-05-07
IPC分类号： G09G3/00 , G09G3/3233
摘要： A display apparatus including a display panel, a display driver, a controller and an external circuit is introduced. The display drive includes a power circuit that supplies a first voltage and a second voltage to the display panel to sense a plurality of sensing currents flowing through the display panel according to the first voltage and the second voltage in a first operating mode. The display driver receives the plurality of sensing currents and a target current from the display panel in the first operating mode. The controller is coupled to the display driver and configured to determine a plurality of offsets according to the plurality of sensing currents and the target current in the first operating mode. The external memory is coupled to the controller and the display driver to store the offsets in the first operating mode. The display driver and a method adapted to a display apparatus are also introduced.
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公开(公告)号：USRE49726E1
公开(公告)日：2023-11-14
申请号：US17546063
申请日：2021-12-09
发明人： Jen-Wei Li , Jen-Hao Liao
CPC分类号： G09G3/20 , G09G3/3685 , G09G2310/027 , G09G2310/0243 , G09G2310/0291 , G09G2310/0297 , G09G2320/0276 , G09G2320/0673 , G09G2330/028
摘要： A display driver that includes a first driver integrated circuit being cascaded to a second driver integrated circuit is introduced. The first driver integrated circuit includes a first gamma voltage generator that is configured to output a plurality of first gamma voltages to output terminals of the first gamma voltage generator. The second driver integrated circuit includes a second gamma voltage generator that is configured to output a plurality of second gamma voltages to output terminals of the second gamma voltage generator. Each of the output terminals of the first gamma voltage generator is corresponded to one of the output terminals of the second gamma voltage generator. At least one of the output terminals of the first gamma voltage generator is electrically coupled to the corresponding one of the output terminals of the second gamma voltage generator to output at least one common gamma voltage of the first gamma voltages and the second gamma voltages. A method adapted to the display driver is also introduced.
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公开(公告)号：US10937489B2
公开(公告)日：2021-03-02
申请号：US16747559
申请日：2020-01-21
发明人： Pin-Han Su , Jen-Hao Liao
IPC分类号： G11C11/41 , G11C11/419 , G11C7/12 , G11C11/4091
摘要： A pre-charge circuit of a static random access memory (SRAM) controller and a pre-charging method thereof are provided. The pre-charge circuit of the SRAM controller includes a first switch, a second switch and a third switch. A first terminal of the first switch is coupled to a working voltage, a second terminal of the first switch is coupled to a first bit line of the SRAM controller, and the first switch is controlled by a first turn-on signal. A first terminal of the second switch is coupled to the working voltage, a second terminal of the second switch is coupled to a second bit line of the SRAM controller, and the second switch is controlled by a second turn-on signal. The third switch is coupled between the first bit line and the second bit line, and the third switch is controlled by a third turn-on signal. In a pre-charge mode, a time point at which the third switch is turned on is earlier than a time point at which the first switch is turned on and earlier than a time point at which the second switch is turned on.
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