Interlaced MLA LCD STN driver
First Claim
1. A Multi Line Addressing (MLA) Liquid Crystal Display (LCD) system comprising:
- a display unit; and
a display controller device, wherein the lines for each common sub-group between said display unit and said display controller device are interlaced from top to bottom of the display unit in a way that a first common sub-group is driven from a first side of the display controller device, a second common sub-group is driven from the opposite to first side of the display controller device, a third sub-group is driven from the first side again, a fourth common sub-group is driven from said opposite side again, and so on until the bottom of the display unit is reached.
1 Assignment
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Accused Products
Abstract
Liquid crystal display (LCD) systems and related methods to achieve reduced resistance of the connections between the display controller device and MLA common sub-groups or groups of signal lines of the display unit avoiding differences of contrast between adjacent lines of an LCD display unit have been achieved. In a preferred embodiment of a Multiple Line Addressing (MLA) Super Twisted Nematic (STN) LCD driver the lines of the common sub-groups are interlaced alternately from both sides of the display control device to the correspondent sides of the display unit in a way that the uppermost common sub-group is driven from a first side of the display control device, the second uppermost sub-group is driven from the side opposite to said first side, the third uppermost sub-group is driven from said first side again and so on. The number of lines per common sub-group is variable. One advantage of the interlaced scheme invented is that the overall glass routing distance is shorter hence reducing resistance. Furthermore, compared to prior art there is no longer a marked difference in routing distance between adjacent lines, thus avoiding differences of contrast. The interlacing scheme can be used for conventional LCD as well.
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Citations
42 Claims
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1. A Multi Line Addressing (MLA) Liquid Crystal Display (LCD) system comprising:
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a display unit; and
a display controller device, wherein the lines for each common sub-group between said display unit and said display controller device are interlaced from top to bottom of the display unit in a way that a first common sub-group is driven from a first side of the display controller device, a second common sub-group is driven from the opposite to first side of the display controller device, a third sub-group is driven from the first side again, a fourth common sub-group is driven from said opposite side again, and so on until the bottom of the display unit is reached. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 17, 18)
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9. A Multi Line Addressing (MLA) Liquid Crystal Display (LCD) system comprising:
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a display unit; and
a display controller device, wherein a number of MLA common sub-groups are bundled into MLA common groups and the lines for each common group between said display unit and said display controller device are interlaced from top to bottom of the display unit in a way that a first MLA common group is driven from a first side of the display controller device, a second common group is driven from the opposite to first side of the display controller device, a third common group is driven from the first side again, a fourth common group is driven from said opposite side again, and so on until the bottom of the display unit is reached. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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19. A Liquid Crystal Display (LCD) system comprising:
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a display unit; and
a display controller device, wherein a number of common signal lines are bundled into common signal groups and the lines for each common signal group between said display unit and said display controller device are interlaced from top to bottom of the display unit in a way that a first common signal group is driven from a first side of the display controller device, a second common signal group is driven from the opposite to first side of the display controller device, a third common signal group is driven from the first side again, a fourth common signal group is driven from said opposite side again, and so on until the bottom of the display unit is reached. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26)
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27. A method to achieve reduced resistance of the connections between the display controller device and the MLA common sub-groups of the display unit of an MLA LCD display system avoiding differences of contrast between adjacent lines of the LCD display unit comprising the following steps:
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providing an MLA LCD display unit and a MLA LCD display controller device;
define number of lines per MLA common sub-group; and
interlace lines of MLA common sub-groups alternately from both sides of the display control device to the correspondent sides of the display unit in a way that the uppermost MLA sub-group is driven from a first side of the MLA display control device, the second uppermost MLA sub-group is driven from the side opposite to said first side, the third uppermost MLA sub-group is driven from said first side again and so on. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34)
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35. A method to achieve reduced resistance of the connections between the display controller device and the MLA common sub-groups of the display unit of an MLA LCD display system avoiding differences of contrast between adjacent lines of the LCD display unit comprising the following steps:
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providing an MLA LCD display unit and a MLA LCD display controller device;
define number of lines per MLA common sub-group;
define number of MLA common sub-groups per MLA common group; and
interlace lines of MLA common groups alternately from both sides of the MLA display control device to the correspondent sides of the MLA display unit in a way that the uppermost MLA common group is driven from a first side of the MLA display control device, the second uppermost MLA common group is driven from the side opposite to said first side, the third uppermost MLA common group is driven from said first side again and so on. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42)
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Specification