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US 5,798,742 AGranted
Active matrix panel and method for fabricating the same
AssigneeSharp Kabushiki Kaisha
InventorsMasahide Watatani, Toshihiro Yamashita, Takayuki Shimada
Life of this patent
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Abstract
An active matrix panel includes: a liquid crystal section having a plurality of pixels arranged in a matrix; a plurality of source lines for applying video signals to the plurality of pixels; a source driver for sequentially applying the video signals to the plurality of source lines; and a plurality of sample hold capacitances for holding the video signals applied to the source line, wherein each of the source lines is connected to a predetermined number of the sample hold capacitances in parallel.
Claims28
An active matrix panel comprising:
- a liquid crystal section having a plurality of pixels arranged in a matrix;
- a plurality of source lines for applying video signals to the plurality of pixels;
- a source driver for sequentially applying the video signals to the plurality of source lines;
- and
- a sample hold capacitance for holding the video signals applied to the source line,
- wherein the sample hold capacitance has a pair of electrodes and at least one of the pair of electrodes is in a shape of a comb having a predetermined number of branch parts.
3 more elements
An active matrix panel comprising:
- a liquid crystal section having a plurality of pixels arranged in a matrix;
- a plurality of source lines for applying video signals to the plurality of pixels;
- a source driver for sequentially applying the video signals to the plurality of source lines;
- and
- a plurality of sample hold capacitances for holding the video signals applied to the source line,
- wherein each of the source lines is connected to a predetermined number of sample hold capacitances in parallel;
- and
- wherein the source driver includes:
- a plurality of sampling switching elements for, when being rendered conductive, applying the video signals to the plurality of source lines;
- sampling signal applying means for sequentially applying a plurality of sampling signals to the plurality of sampling switching elements to render the plurality of sampling switching elements conductive;
- and
- adjustment means for adjusting a timing at which each of the plurality of sampling switching elements is rendered conductive, the adjustment comprising a plurality of load carrying capacitances, each of the plurality of load carrying capacitances being arranged in parallel with an output terminal of a corresponding logic element among the plurality of load carrying capacitances and being cut from the corresponding logic element when one of input terminals of the corresponding logic element is cut.
9 more elements
An active matrix panel comprising:
- a liquid crystal section having a plurality of pixels arranged in a matrix;
- a plurality of source lines for applying video signals to the plurality of pixels;
- a source driver for sequentially applying the video signals to the plurality of source lines;
- and
- a plurality of sample hold capacitances for holding the video signals applied to the source line,
- wherein each of the source lines is connected to a predetermined number of sample hold capacitances in parallel;
- and
- wherein the source driver includes:
- a plurality of sampling switching elements for, when being rendered conductive, applying the video signals to the plurality of source lines;
- and
- sampling signal applying means for sequentially applying a plurality of sampling signals which render the sampling switching elements conductive to the sampling switching elements,
- wherein the sampling signal applying means includes a plurality of logic elements generating the plurality of sampling signals, respectively, each of the logic elements being provided with a plurality of transistors, and channel widths of the plurality of transistors are set in accordance with the number of transistors rendered conductive at a fall time of a corresponding sampling signal.
9 more elements
An active matrix panel comprising:
- a liquid crystal section having a plurality of pixels arranged in a matrix;
- a plurality of source lines for applying video signals to the plurality of pixels;
- a source driver for sequentially applying the video signals to the plurality of source lines;
- and
- a plurality of sample hold capacitances for holding the video signals applied to the source line,
- wherein each of the source lines is connected to a predetermined number of sample hold capacitances in parallel;
- and
- wherein the source driver includes:
- a plurality of sampling switching elements for, when being rendered conductive, applying the video signals to the plurality of source lines when being rendered conductive;
- and
- sampling signal applying means for sequentially applying a plurality of sampling signals which render the sampling switching elements conductive to the sampling switching elements,
- wherein the sampling signal applying means includes a plurality of logic elements each generating the plurality of sampling signals, respectively, each of the logic elements includes a plurality of transistors, and channel lengths of the transistors are set in accordance with the number of transistors rendered conductive at a fall time of a corresponding sampling signal.
9 more elements
An active matrix panel comprising:
- a liquid crystal section having a plurality of pixels arranged in a matrix;
- a plurality of source lines for applying video signals to the plurality of pixels;
- and
- a source driver for sequentially applying the video signals to the plurality of source lines,
- the source driver including:
- a plurality of sampling switching elements for, when being rendered conductive, applying the video signal to the plurality of source lines;
- and
- sampling signal applying means for sequentially applying a plurality of sampling signals which render the sampling switching elements conductive to the sampling switching elements,
- wherein the sampling signal applying means includes a plurality of logic elements for generating a plurality of sampling signals and adjustment means for adjusting a deviation of timing at which the sampling switching elements are rendered conductive, the deviation resulting from a difference in driving ability among the plurality of logic elements.
6 more elements
Dependencies are inferred from the claim text.