A method for eliminating crosstalk in a thin film transistor/liquid crystal display

Claim 3

2 The method of claim 1, wherein said crosstalk compensation signal is a function of the complement of said data signal.

Claim 4

3 The method of claim 1 or 2, wherein applying a gating signal to one of said gate lines for at least one half of the standard scan line time for said display, and not applying said gating signal to said one of said gate lines for the remainder of said standard scan line time;

Claim 5

The method of claim 1, 2 or 3, with said display having a frame period T, and N gate lines, with Vi being the data signal for a cell, Vm being a fixed voltage which may be zero, δ is the fraction of the scan line time T/N that a gate and data signal are concurrently on, and γ is a scaling factor for compensation of pulse amplitude, wherein turning on a gating signal during the time period (0 - δT/N), and turning off said gating signal during the time period (T/N - δT/N ); and applying a composite signal to one of said data lines for the scan line time T/N, with said composite signal comprising said data signal Vi during the time said gating signal is on and comprising a cross­talk compensation signal γ (Vm - Vi) during the time said gating signal is off, with said cross­talk compensation signal reducing the effect of crosstalk in at least the other cells connected to said one data line.

Claim 6

The method of claim 4, wherein δ has a value in the range of 0 ≦ δ ≦ 1 and γ, corresponding to the chosen δ value, is defined by γ² = δ/(1-δ).

Claim 7

The method of claim 4 or 5, wherein the compensa­tion signal, defined by Vm - Vi, may be derived from any convenient value of ± Vm, including zero.

Claim 8

In a display comprised of a matrix of thin film transistor/liquid crystal display cells, each cell being defined by the intersection of one of a first plurality of data lines extending in a first direction and one of a second plurality of gate lines extending in a second direction which is at an angle to said first direction, with a given cell being turned on in response to the data line and the gate line that intersect at the cell having a data signal and a gating signal, respectively, applied thereto, comprising: means for turning on a gating signal for a time period less than the standard scan line time period of said display, for applying said gating signal to one of said gate lines, and turning off said gating signal for the remainder of said standard scan line time period; and means for applying a two level signal to one of said data lines for the standard scan line period of said display, with said first level comprising a crosstalk compensation signal, said two level signal being at the first level concurrent with said gating signal being turned on and at said second level concurrent with said gating signal being turned off.

Claim 9

In a display comprised of a matrix of thin film transistor/liquid crystal display cells, each cell being defined by the intersection of one of a first plurality of data lines extending in a first direction and one of a second plurality of gate lines extending in a second direction which is at an angle to said first direction, with a given cell being turned on in response to the data line and the gate line that intersect at the cell having a data signal and a gating signal, respectively, applied thereto, comprising: means for turning on a gating signal for a time period less than the standard scan line time period of said display, for applying said gating signal to one of said gate lines, and turning off said gating signal for the remainder of said standard scan line time period; and means for applying a two level signal to one of said data lines for the standard scan line period of said display, with said first level comprising a crosstalk compensation signal, said two level signal being at the first level concurrent with said gating signal being turned on and at said second level concurrent with said gating signal being turned off.

Claim 10

The display as claimed in claim 7, wherein said crosstalk compensation signal is a function of the complement of said data signal.

Claim 11

The display as claimed in claim 7 or 8, comprising said means for applying a gating signal to one of said gate lines for at least bne half of the standard scan line time for said display, and not applying said gating signal to said one of said gate lines for the remainder of said standard scan line time.

Claim 12

The display as claimed in claim 7, 8, or 9, with said display having a frame period T, and N gate lines, with Vi being the data signal for a cell, Vm being a fixed voltage which may be zero, w is the fraction of the scan line time T/N that a gate and data signal are concurrently on, and γ is a scaling factor for compensation of pulse amplitude, said display comprising said means for turning on a gating signal during the time period (0 - δT/N), and turning off said gating signal during the time period (δT/N - T/N); and means for applying a composite signal to one of said data lines for the scan line time T/N, with said composite signal comprising said data signal Vi during the time said gating signal is on and comprising a crosstalk compensation signal γ (Vm - Vi) during the time said gating signal is off, with said crosstalk compensation signal reducing the effect of crosstalk in at least the other cells connected to said one data line.

Claim 13

The display as claimed in claim 10, wherein δ has a value in the range of 0 ≦ δ ≦ 1 and γ, corresponding to the chosen δ value, is defined by γ² = δ/(1-δ).

Claim 14

The display as claimed in claim 7, 8, 9, 10 or 11, wherein the compensation signal, defined by Vm -­Vi, may be derived from any convenient value of ± Vm, including zero.