LIQUID CRYSTAL DISPLAY DEVICE, DRIVING DEVICE FOR LIQUID CRYSTAL DISPLAY PANEL, AND LIQUID CRYSTAL DISPLAY PANEL
First Claim
1. A liquid crystal display device comprising:
- an active matrix liquid crystal display panel; and
a driving device for driving the liquid crystal display panel, whereinthe liquid crystal display panel comprises;
a common electrode;
a plurality of pixel electrodes arranged in a matrix; and
source lines provided on a left side of pixel electrodes in each column of pixel electrodes and on a right side of a rightmost column of pixel electrodes,wherein when every row or every two or more consecutive rows of pixel electrodes are set as one group, a pixel electrode in each row of an odd-numbered group is connected to a source line on a predetermined side among source lines existing on both sides of the pixel electrode, and a pixel electrode in each row of an even-numbered group is connected to a source line on a side opposite to the predetermined side among the source lines existing on both sides of the pixel electrode,the driving device comprises;
potential output means having a plurality of potential output terminals from each of which a potential corresponding to an input pixel value is output, and configured to output a potential from each potential output terminal in such a manner to output a potential higher than a common electrode potential and a potential lower than the common electrode potential alternately in order of arrangement of the potential output terminals; and
switch means having a plurality of input terminals and switch output terminals that is one more in number than the plurality of input terminals, wherein if a k-th input terminal from the left is denoted as Ik, k-th and k+1-th switch output terminals from the left are denoted as Ok and Ok+1, respectively, the number of input terminals is denoted as n, and k takes each value from 1 to n, the switch means connects the input terminal Ik to either of the switch output terminals Ok and Ok+1,wherein each source line of the liquid crystal display panel is connected to a corresponding switch output terminal of the switch means,the potential output means switches between output of a potential higher than the common electrode potential and output of a potential lower than the common electrode potential at each potential output terminal depending on a period for selecting each row in the odd-numbered group one by one or a period for selecting each row in the even-numbered group one by one,the switch means switches between the switch output terminals to be connected to each input terminal depending on the period for selecting each row in the odd-numbered group one by one or the period for selecting each row in the even-numbered group one by one, andthe potential output means continues to output, from each potential output terminal, a potential specific to a pixel value corresponding to the potential output terminal, respectively, during a selection period of one row.
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Accused Products
Abstract
Pixel electrodes in odd-numbered rows of a liquid crystal display panel are connected to source lines arranged on the left side of the pixel electrodes, respectively. Further, Pixel electrodes in even-numbered rows are connected to source lines arranged on the right side of the pixel electrodes, respectively. A potential setting section outputs potentials higher than a common electrode potential VCOM and potentials lower than VCOM from respective potential output terminals D1 to Dn alternately in order of arrangement of the potential output terminals. Further, potential output higher than VCOM and potential output lower than VCOM are switched per selection period. A switch section switches, per selection period, between output terminals Ok and Ok+1 to either of which an input terminal Ik is to be connected.
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Citations
21 Claims
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1. A liquid crystal display device comprising:
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an active matrix liquid crystal display panel; and a driving device for driving the liquid crystal display panel, wherein the liquid crystal display panel comprises; a common electrode; a plurality of pixel electrodes arranged in a matrix; and source lines provided on a left side of pixel electrodes in each column of pixel electrodes and on a right side of a rightmost column of pixel electrodes, wherein when every row or every two or more consecutive rows of pixel electrodes are set as one group, a pixel electrode in each row of an odd-numbered group is connected to a source line on a predetermined side among source lines existing on both sides of the pixel electrode, and a pixel electrode in each row of an even-numbered group is connected to a source line on a side opposite to the predetermined side among the source lines existing on both sides of the pixel electrode, the driving device comprises; potential output means having a plurality of potential output terminals from each of which a potential corresponding to an input pixel value is output, and configured to output a potential from each potential output terminal in such a manner to output a potential higher than a common electrode potential and a potential lower than the common electrode potential alternately in order of arrangement of the potential output terminals; and switch means having a plurality of input terminals and switch output terminals that is one more in number than the plurality of input terminals, wherein if a k-th input terminal from the left is denoted as Ik, k-th and k+1-th switch output terminals from the left are denoted as Ok and Ok+1, respectively, the number of input terminals is denoted as n, and k takes each value from 1 to n, the switch means connects the input terminal Ik to either of the switch output terminals Ok and Ok+1, wherein each source line of the liquid crystal display panel is connected to a corresponding switch output terminal of the switch means, the potential output means switches between output of a potential higher than the common electrode potential and output of a potential lower than the common electrode potential at each potential output terminal depending on a period for selecting each row in the odd-numbered group one by one or a period for selecting each row in the even-numbered group one by one, the switch means switches between the switch output terminals to be connected to each input terminal depending on the period for selecting each row in the odd-numbered group one by one or the period for selecting each row in the even-numbered group one by one, and the potential output means continues to output, from each potential output terminal, a potential specific to a pixel value corresponding to the potential output terminal, respectively, during a selection period of one row. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A liquid crystal display device comprising:
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an active matrix liquid crystal display panel; and a driving device for driving the liquid crystal display panel, wherein the liquid crystal display panel comprises; a common electrode; a plurality of pixel electrodes arranged in a matrix; and source lines provided on a left side of pixel electrodes in each column of pixel electrodes and on a right side of a rightmost column of pixel electrodes, wherein when every row or every two or more consecutive rows of pixel electrodes are set as one group, a pixel electrode in each row of an odd-numbered group is connected to a source line on a predetermined side among source lines existing on both sides of the pixel electrode, and a pixel electrode in each row of an even-numbered group is connected to a source line on a side opposite to the predetermined side among the source lines existing on both sides of the pixel electrode, the driving device comprises; a DA converter for inputting each data corresponding to each of pixel values for one row, converting the input data to an analog voltage, and outputting a potential after subjected to conversion, wherein depending on whether a first control signal input to the DA converter is at high level or low level, the DA converter switches between whether a potential higher than a common electrode potential is output from an odd-numbered potential output terminal from the left and a potential lower than the common electrode potential is output from an even-numbered potential output terminal from the left, and whether a potential lower than the common electrode potential is output from the odd-numbered potential output terminal from the left and a potential higher than the common electrode potential is output from the even-numbered potential output terminal from the left; and switch means for switching between whether a potential of a pixel electrode is set using the source line on the left side of the pixel electrode and whether the potential of the pixel electrode is set using the source line on the right side of the pixel electrode, wherein if the number of pixel columns to be driven is denoted as m, the switch means has m input terminals and m+1 switch output terminals, and if a k-th input terminal from the left is denoted as Ik, k-th and k+1-th switch output terminals from the left are denoted as Ok and Ok+1, respectively, and k takes each value from 1 to m, the switch means switches, depending on whether a second control signal input to the switch means is at high level or low level, between whether the input terminal Ik is connected to the switch output terminal Ok and whether the input terminal Ik is connected to the switch output terminal Ok+1. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A driving device for a liquid crystal display panel including a common electrode, a plurality of pixel electrodes arranged in a matrix, and source lines provided on a left side of pixel electrodes in each column of pixel electrodes and on a right side of a rightmost column of pixel electrodes, wherein when every row or every two or more consecutive rows of pixel electrodes are set as one group, a pixel electrode in each row of an odd-numbered group is connected to a source line on a predetermined side among source lines existing on both sides of the pixel electrode, and a pixel electrode in each row of an even-numbered group is connected to a source line on a side opposite to the predetermined side among the source lines existing on both sides of the pixel electrode, the driving device comprising:
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potential output means having a plurality of potential output terminals from each of which a potential corresponding to an input pixel value is output, and configured to output a potential from each potential output terminal in such a manner to output a potential higher than a common electrode potential and a potential lower than the common electrode potential alternately in order of arrangement of the potential output terminals; and switch means having a plurality of input terminals and switch output terminals that is one more in number than the plurality of input terminals, wherein if a k-th input terminal from the left is denoted as Ik, k-th and k+1-th switch output terminals from the left are denoted as Ok and Ok+1, respectively, the number of input terminals is denoted as n, and k takes each value from 1 to n, the switch means connects the input terminal Ik to either of the switch output terminals Ok and Ok+1, wherein the potential output means switches between output of a potential higher than the common electrode potential and output of a potential lower than the common electrode potential at each potential output terminal depending on a period for selecting each row in the odd-numbered group one by one or a period for selecting each row in the even-numbered group one by one, the switch means switches between the switch output terminals to be connected to each input terminal depending on the period for selecting each row in the odd-numbered group one by one or the period for selecting each row in the even-numbered group one by one, and the potential output means continues to output, from each potential output terminal, a potential specific to a pixel value corresponding to the potential output terminal, respectively, during a selection period of one row. - View Dependent Claims (17)
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18. A driving device for a liquid crystal display panel including a common electrode, a plurality of pixel electrodes arranged in a matrix, and source lines provided on a left side of pixel electrodes in each column of pixel electrodes and on a right side of a rightmost column of pixel electrodes, wherein when every row or every two or more consecutive rows of pixel electrodes are set as one group, a pixel electrode in each row of an odd-numbered group is connected to a source line on a predetermined side among source lines existing on both sides of the pixel electrode, and a pixel electrode in each row of an even-numbered group is connected to a source line on a side opposite to the predetermined side among the source lines existing on both sides of the pixel electrode, the driving device comprising:
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a DA converter for inputting each data corresponding to each of pixel values for one row, converting the input data to an analog voltage, and outputting a potential after subjected to conversion, wherein depending on whether a first control signal input to the DA converter is at high level or low level, the DA converter switches between whether a potential higher than a common electrode potential is output from an odd-numbered potential output terminal from the left and a potential lower than the common electrode potential is output from an even-numbered potential output terminal from the left, and whether a potential lower than the common electrode potential is output from the odd-numbered potential output terminal from the left and a potential higher than the common electrode potential is output from the even-numbered potential output terminal from the left; and switch means for switching between whether a potential of a pixel electrode is set using the source line on the left side of the pixel electrode and whether the potential of the pixel electrode is set using the source line on the right side of the pixel electrode, wherein if the number of pixel columns to be driven is denoted as m, the switch means has m input terminals and m+1 switch output terminals, and if a k-th input terminal from the left is denoted as Ik, k-th and k+1-th switch output terminals from the left are denoted as Ok and Ok+1, respectively, and k takes each value from 1 to m, the switch means switches, depending on whether a second control signal input to the switch means is at high level or low level, between whether the input terminal Ik is connected to the switch output terminal Ok and whether the input terminal Ik is connected to the switch output terminal Ok+1. - View Dependent Claims (19)
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20. A liquid crystal display panel comprising:
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a common electrode; a plurality of pixel electrodes arranged in a matrix; source lines provided on a left side of pixel electrodes in each column of pixel electrodes and on a right side of a rightmost column of pixel electrodes; and switch means having a plurality of input terminals and switch output terminals that is one more in number than the plurality of input terminals, wherein if a k-th input terminal from the left is denoted as Ik, k-th and k+1-th switch output terminals from the left are denoted as Ok and Ok+1, respectively, the number of input terminals is denoted as n, and k takes each value from 1 to n, the switch means connects the input terminal Ik to either of the switch output terminals Ok and Ok−
1,wherein when every row or every two or more consecutive rows of pixel electrodes are set as one group, a pixel electrode in each row of an odd-numbered group is connected to a source line on a predetermined side among source lines existing on both sides of the pixel electrode, and a pixel electrode in each row of an even-numbered group is connected to a source line on a side opposite to the predetermined side among the source lines existing on both sides of the pixel electrode, each source line is connected to a corresponding switch output terminal of the switch means, and the switch means switches between the switch output terminals to be connected to each input terminal depending on the period for selecting each row in the odd-numbered group one by one or the period for selecting each row in the even-numbered group one by one.
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21. A liquid crystal display panel comprising:
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a common electrode; a plurality of pixel electrodes arranged in a matrix; and source lines provided on a left side of pixel electrodes in each column of pixel electrodes and on a right side of a rightmost column of pixel electrodes, wherein when every row or every two or more consecutive rows of pixel electrodes are set as one group, a pixel electrode in each row of an odd-numbered group is connected to a source line on a predetermined side among source lines existing on both sides of the pixel electrode, and a pixel electrode in each row of an even-numbered group is connected to a source line on a side opposite to the predetermined side among the source lines existing on both sides of the pixel electrode, and among the source lines, a specific odd-numbered source line has two branch portions to connect with different driving devices.
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Specification