In-plane switching mode liquid crystal display device
First Claim
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1. An in-plane switching mode liquid crystal display device comprising:
- first and second substrates;
a data bus line and a gate bus line arranged in a matrix on said first substrate and defining a unit pixel, said unit pixel being divided into a plurality of sub-pixels the sub-pixels being controlled by a switching unit;
a plurality of electrodes in each of the sub-pixels, the plurality of electrodes applying a plane electric field in said liquid crystal, the electrodes being at an angle with respect to said data bus line and substantially parallel to each other; and
a liquid crystal layer between said first and second substrates.
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Abstract
An in-plane switching mode liquid crystal display device includes first and second opposed substrates having inner surfaces in which a liquid crystal layer formed therebetween, a data bus line and a gate bus line arranged perpendicularly and/or horizontally in a matrix on the first substrate thereby defining a unit pixel region, and a pair of data electrode and common electrode applying a plane electric field in the liquid crystal layer, the electrodes being inclined with respect to the data bus line and parallel to each other.
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Citations
39 Claims
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1. An in-plane switching mode liquid crystal display device comprising:
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first and second substrates;
a data bus line and a gate bus line arranged in a matrix on said first substrate and defining a unit pixel, said unit pixel being divided into a plurality of sub-pixels the sub-pixels being controlled by a switching unit;
a plurality of electrodes in each of the sub-pixels, the plurality of electrodes applying a plane electric field in said liquid crystal, the electrodes being at an angle with respect to said data bus line and substantially parallel to each other; and
a liquid crystal layer between said first and second substrates. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
a thin film transistor (TFT) adjacent a cross point of said gate and data bus lines;
a common line in said pixel region;
a passivation layer on said TFT; and
a first alignment layer on said passivation layer.
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3. The in-plane switching mode liquid crystal display device according to claim 2, further comprising:
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a black matrix for preventing light from leaking around said TFT, said gate bus line, and said data bus line;
a color filter layer on said second substrate; and
a second alignment layer on said color filter layer.
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4. The in-plane switching mode liquid crystal display device according to claim 2, wherein said angle θ
- is about 20 degrees.
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5. The in-plane switching mode liquid crystal display device according to claim 1, wherein said pair of electrodes includes a data electrode and a common electrode.
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6. The in-plane switching mode liquid crystal display device according to claim 1, wherein said angle θ
- is about 20 degrees.
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7. The in-plane switching mode liquid crystal display device according to claim 1, wherein the sub-pixels are each defined by the data bus line and the gate bus line.
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8. The in-plane switching mode liquid crystal display device according to claim 1, wherein said unit pixel region is divided into four sub-pixel regions.
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9. The in-plane switching mode liquid crystal display device according to claim 8, wherein said angle θ
- is about 20 degrees.
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10. The in-plane switching mode liquid crystal display device according to claim 1, wherein the electrodes being at said angle θ
- prevents color shift.
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11. The in-plane switching mode liquid crystal display device according to claim 10, wherein the electrodes being at said angle θ
- prevents gray inversion.
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12. The in-plane switching mode liquid crystal display device according to claim 1, wherein at least two of the sub-pixels have electrodes in different directions.
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13. The in-plane switching mode liquid crystal display device according to claim 12, wherein the different directions are substantially perpendicular directions.
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14. The in-plane switching mode liquid crystal display device according to claim 12, wherein the different directions are substantially parallel directions.
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15. The in-plane switching mode liquid crystal display device according to claim 1, wherein the sub-pixels are four regions substantially forming a four-sided shape, each of the four regions providing a side for the four-sided shape.
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16. The in-plane switching mode liquid crystal display device according to claim 15, wherein the four-sided shape is a lozenge shape.
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17. A method of forming a liquid crystal display device having first and second substrates comprising the steps of:
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forming a data bus line and a gate bus line arranged in a matrix on said first substrate and defining a unit pixel, said unit pixel being divided into a plurality of sub-pixels, the sub-pixels being controlled by a switching unit;
forming a plurality of electrodes in each of the sub-pixels for applying a plane electric field in said liquid crystal, the electrodes being at an angle with respect to said data bus line and substantially parallel to each other; and
forming a liquid crystal layer between said first and second substrates. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
forming a thin film transistor (TFT) adjacent a cross point of said gate and data bus lines;
forming a common line in said pixel region;
forming a passivation layer on said TFT; and
forming a first alignment layer on said passivation layer.
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19. The method according to claim 18, further comprising the steps of:
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forming a black matrix for preventing light from leaking around said TFT, said gate bus line, and said data bus line;
forming a color filter layer on said second substrate; and
forming a second alignment layer on said color filter layer.
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20. The method according to claim 18, wherein said angle θ
- is about 20 degrees.
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21. The method according to claim 17, wherein said pair of electrodes includes a data electrode and a common electrode.
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22. The method according to claim 17, wherein said angle θ
- is about 20 degrees.
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23. The method according to claim 17, wherein said unit pixel region is divided into four sub-pixel regions.
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24. The method according to claim 23, wherein said angle θ
- is about 20 degrees.
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25. The method according to claim 17, wherein the sub-pixel regions are each defined by the data bus line and the gate bus line.
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26. The method according to claim 17, wherein at least two of the sub-pixels have electrodes in different directions.
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27. The method according to claim 26, wherein the different directions are substantially perpendicular directions.
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28. The method according to claim 26, wherein the different directions are substantially parallel directions.
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29. The method according to claim 17, wherein the sub-pixels are four regions substantially forming a four-sided shape, each of the four regions providing a side for the four-sided shape.
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30. The method according to claim 29, wherein the four side shape is a lozenge shape.
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31. An in-plane switching mode liquid crystal display device comprising:
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first and second substrates;
a data bus line and a gate bus line arranged in a matrix on said first substrate and defining a unit pixel, said unit pixel being divided into a plurality of sub-pixels, the sub-pixels being controlled by a switching unit;
a plurality of electrodes in each of the sub-pixels for applying a plane electric field in said liquid crystal, the electrodes being at an angle with respect to said data bus line and substantially parallel to each other;
a liquid crystal layer between said first and second substrates;
a thin film transistor (TFT) adjacent a cross point of said gate and data bus lines;
a common line in said pixel;
a passivation layer on said TFT;
a first aliment layer on said passivation layer;
a black matrix for preventing light from leaking around said TFT, said gate bus line, and said data bus line;
a color filter layer on said second substrates; and
a second alignment layer on said color filter layer. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39)
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Specification