DE112012005775T5 - Lateral electric field-type liquid crystal display device with nonuniform distances between two electrodes - Google Patents

Abstract

A lateral electric field type liquid crystal display (LCD) device comprising a first substrate provided with a plurality of first electrodes and at least one second electrode, a second substrate, and a liquid crystal layer disposed between the two substrates. Each first electrode has a number of electrode segments and two adjacent first and second electrodes each have a minimum distance which is smaller than a maximum distance between them. Every second electrode is a strip electrode or also has a number of electrode segments. Each of the electrode segments is a V-shaped electrode that is rotated through an angle, or an electrode segment that has at least one depressed part and at least one depressed part. The series of electrode segments can be a sinusoidal electrode. The first and second electrodes are oriented parallel to or at a specific angle with respect to the data line of the lateral electric field type LCD device.

Description

Background of the invention

1. Field of the invention

The present invention relates to a liquid crystal display (LCD) device, and more particularly to the electrode structure of a lateral electric field type LCD device.

2. Description of the Related Art

An LCD device controls the light transmittance by utilizing the characteristic having liquid crystal (IC) molecules having different light polarization or refraction effects under different orientations to thereby form images. A twisted nematic (TN) LCD device has good light transmission, but an extremely narrow viewing angle, influenced by the structure and optical property of the LC molecules.

To solve the transmission and face angle problems, a twisted vertical alignment (TVA) model has been proposed to allow for high transmission and wide viewing angle. However, since the LC molecules are aligned in the vertical direction when they are at a low voltage, and the LCD device is viewed at an oblique viewing angle, a grayscale inversion problem occurs which causes the problem of color shift at an oblique viewing angle and affects a normal presentation of images of the LCD device.

Another approach to solving the problems is to use in-plane switching (IPS) technology, in which digital electrodes are formed on a single substrate to create an electric field that is substantially parallel to the substrate. An IPS LCD device has the advantages of better picture quality, improved viewing angle and greater brightness compared to the TN LCD device.

In a conventional IPS LCD device, the two electrodes formed on a substrate are usually arranged parallel to each other. The critical voltage needed to power the IPS LCD device is higher and the contrast is also worse. Therefore, there is a great need to develop a new electrode structure to lower the critical voltage and improve the contrast of the LCD device.

Summary of the invention

The present invention has been made to provide a lateral electric field type LCD device having characteristics such as high contrast and wide viewing angle. As a result, the lateral electric field type LCD device has a first substrate, a second substrate, an LC layer, a first alignment layer, and a second alignment layer. A plurality of first electrodes and at least one second electrode interleaved with the first of the plurality of first electrodes are formed on the first substrate, respectively, and serve as pixels and common electrodes of the LCD device.

According to the present invention, the plurality of first electrodes and the second electrodes may be formed on the same layer or two different layers above the first substrate. The distance between each two adjacent first and second electrodes is not set uniformly, so that a minimum distance and a maximum distance occur between the adjacent electrodes. Preferably, the maximum distance is three times greater than the minimum distance.

In order not to uniform the distance between two adjacent first and second electrodes, the present invention provides several different structures for the two electrodes. In an exemplary structure, each of the first electrodes has a series of V-shaped electrode segments aligned in the same vertical direction as the data line of the LCD device, and each of the second electrodes includes a strip electrode extending in the same direction. The openings of the V-shaped electrode are aligned perpendicular to the data line.

In another exemplary structure, each of the first electrodes has an array of V-shaped electrode segments, the openings of the V-shaped electrode segments being aligned front-to-front in two adjacent first electrodes such that any two adjacent first electrodes are a mirrored pair form. In another exemplary structure, each of the second adjacent electrodes also has a series of V-shaped electrode segments arranged so that each two adjacent first and second electrodes form a mirrored pair.

According to other examples of the present invention, the arrangement of the V-shaped electrode segments of the first and second electrodes according to the above-described exemplary structures is replaced by a sinusoidal electrode. In addition, the first and second electrodes are not aligned in parallel with respect to the direction of the data line of the LCD device, but may be oriented at an angle of 45 °.

In another exemplary structure of the present invention, each of the first and second electrodes has a series of electrode segments having each of the extruded and pressed parts. Each of the two electrodes is either a strip electrode or a series of electrode segments similar to the first electrode. The first and second electrodes may be aligned in the same direction as the data line of the LCD device or at an angle of 45 ° with respect to the direction of the data line.

In other exemplary structures of the present invention, the data line of the LCD device is bent in the middle to a V, with the opening of the V oriented to the left. The first and second electrodes each form a series of V-shaped electrode segments, a series of electrode segments with impressions and impressions, a strip electrode or a sinusoidal electrode which is also bent in the middle so as to follow the direction of the data line.

According to the present invention, the two adjacent electrodes forming a mirrored pair can also be arranged with a step in such a way that they no longer form a mirrored pair. In addition, the first and second electrodes may be oriented substantially perpendicular to the data line of the LCD device or at other angles, for example 15 ° -30 ° with respect to the direction of the data line.

Brief description of the drawings

The present invention will be understood by those skilled in the art by reading the following detailed description of its preferred embodiments with reference to the accompanying drawings, in which:

1 10 is a cross-sectional view of the structure of the lateral electric field type LCD device according to the present invention;

2 12 is a cross-sectional view of another structure of the lateral electric field type LCD device according to the present invention, in which the first and second electrodes are formed on different layers above the first substrate;

3A - 3C three examples of the first and second electrodes, which are aligned substantially parallel to the data line of the LCD device, above the first substrate, according to the present invention;

4A - 4C another three examples of the first and second electrodes aligned at an angle of 45 ° with respect to the direction of the data line of the LCD device formed above the first substrate according to the present invention;

5A - 5D another four examples of the first or second electrodes, with sinusoidal electrodes formed over the first substrate, according to the present invention;

6A - 6B further two examples of the first and second electrodes formed over the first substrate with a bent data line according to the present invention;

7A - 7D another four examples of the first and second electrodes formed over the first substrate with electrode segments provided with extruded and pressed-in parts according to the present invention;

8A - 8B another two examples of the first and second electrodes formed over the first substrate with a curved data line according to the present invention;

9A - 9D another four examples of the first and second electrodes overlying the first substrate, each having two adjacent electrodes which do not form a mirrored pair, according to the present invention;

10A - 10B another two examples of the first and second electrodes overlying the first substrate with a curved data line according to the present invention; and

11A - 11C another three examples of the first and second electrodes oriented substantially in a direction following an inverted V-shape formed over the first substrate according to the present invention.

Detailed Description of the Preferred Embodiment

The accompanying drawings are included to aid in understanding the invention and thus form a part of this specification. The drawing shows embodiments of the invention and together with the description serves to explain the principles of the invention.

In terms of 1 It should be noted that the inventive LCD device of the lateral electric field type a first substrate 101 , a second substrate 102 and an LC layer 103 which is sandwiched between the first and second substrates. The first substrate 101 is with several first electrodes 1011 and at least one second electrode 1012 provided as a pixel electrode or as a common electrode of the LCD device.

Between the first substrate 101 and the LC layer 103 is a first alignment layer 1013 arranged, and a second alignment layer 1023 is located between the second substrate 102 and the LC view 103 , Although this in 1 not shown, the color filter and the black matrix of the LCD device are also formed on the second substrate.

According to the present invention, each of the first and second alignment layers may be a homeotropic (vertical) alignment layer or a parallel homogeneous alignment layer. The LC layer 103 has nematic liquid crystal molecules with positive dielectric anisotropy (Δε = ε || ε⊥> 0) or a liquid crystal mixture of positive dielectric anisotropic, nematic liquid crystal molecules and a chiral dopant. When alignment layers with parallel homogeneous alignment are used in the LCD device, the LC layer may 103 also have nematic liquid crystal molecules of negative dielectric anisotropy or a liquid crystal mixture of negative, dielectric, anisotropic, nematic liquid crystal molecules and a chiral dopant.

In the present invention, the many first electrodes 1011 with the second electrodes 1012 nested. Both the first and second electrodes may be on the same layer above the first substrate 101 be trained as in 1 shown. Each of the first electrodes 1011 forms an electrode which is provided with V-shaped, curved or other patterns with extruded and pressed-in parts.

Each of the second electrodes 1012 has an electrode, which may be a strip electrode or may also be an electrode which is provided with V-shaped, curved or other patterns with extruded and pressed-in parts. According to the present invention, the distance between the first and second electrodes is not uniform. In other words, the minimum distance W1 between two adjacent first and second electrodes should be smaller than the maximum distance W2 between two adjacent first and second electrodes. Preferably, W2 is greater than three times W1.

As in 2 shown, the many first electrodes 1011 and the second electrodes 1012 on two different layers above the first substrate 101 be educated. After the first electrodes 1011 on the first substrate 101 are formed, an insulating layer 1014 made to the first electrodes 1011 cover and then the second electrodes 1012 over the insulating layer 1014 arranged. When the first and second electrodes are on the same layer, the minimum distance W1 is preferably between 1 μm to 4 μm. If they are formed on two different layers, then the minimum distance W1 may be smaller and preferably between 0 μm to 3 μm.

The 3A - 3c FIG. 15 show the plan view of three examples of the first and second electrodes formed according to the present invention. FIG. As in 3A As can be seen, each of the first electrodes has 3011 a vertical row of V-shaped electrode segments, wherein the opening of each V-shaped electrode segment is aligned horizontally. The angle of the opening in each V-shaped electrode segment is between 90 ° and 170 ° and preferably between 140 ° and 160 °. Each of the second electrodes 3012 forms a strip electrode in the direction of the data line 3010 the LCD device is running.

As in 3A As can be seen, all the first electrodes are running 3011 parallel in the vertical direction. In other words, each vertical row of V-shaped electrode segments is parallel to another. At the in 3B the example shown are the first electrodes 3021 arranged in a different way. Two adjacent first electrodes 3021 form a mirrored pair with respect to the second electrode 3022 between them. Each of the second electrodes 3022 in 3B also has a strip electrode extending in the direction as the data line 3020 the LCD device.

The first electrodes 3031 that in the example of 3C have the same structure as in 3A shown. The second electrodes 3032 are not stripe electrodes in this example. Similar to the first electrodes 3031 points each of the second electrodes 3032 also a vertical row of V-shaped electrode segments. The first and second electrodes 3031 . 3032 are arranged in such a way that each two adjacent first and second electrodes a mirrored pair with respect to a line parallel to the data line 3030 the LCD device is.

The 4A - 4C Figure 12 shows the plan view of other three examples of the first and second electrodes formed according to the invention. As in 4A As can be seen, each of the first points electrodes 4011 a series of V-shaped electrode segments similar to those of the first electrodes 3011 from 3A but at an angle of 45 ° with respect to the direction of the data line 4010 aligned with the LCD device. Each of the second electrodes 4012 is a strip electrode at an angle of 45 ° with respect to the direction of the data line 4010 the LCD device runs.

In the same way, the electrode structures are the 4B and 4C similar to the one of 3B and 3C arranged but at an angle of 45 ° with respect to the direction of the data line 4020 the LCD device. As in 4B shown is each of the second electrodes 4022 a strip electrode at an angle 45 ° with respect to the direction of the data line 4020 the LCD device is aligned, and two adjacent first electrodes 4021 form a mirrored pair with respect to a line at a 45 ° angle with respect to the direction of the data line 4020 ,

In 4C is shown that each of the second electrodes 4032 a series of V-shaped electrode segments, but at an angle of 45 ° with respect to the direction of the data line 4030 the LCD device is aligned. In this example, two adjacent first electrodes each form 4031 and second electrodes 4032 in relation to a line that is at an angle 45 ° with respect to the direction of the data line 4030 runs, a mirrored pair.

The 5A - 5D Figure 12 shows the plan view of other four examples of the first and second electrodes formed in accordance with the present invention. As in 5A shown forms each of the first electrodes 5011 a sinusoidal electrode aligned in the same direction as the data line 5010 the LCD device. Each of the second electrodes 5012 forms a strip electrode that faces the data line 5010 the LCD device runs.

In the example of 5B is shown that each of the first electrodes 5021 forms a sinusoidal electrode which is aligned in the same direction as the data line 5020 the LCD device. Each of the second electrodes 5022 is also a sinusoidal electrode oriented in the same direction. As in 5B As shown, two adjacent first and second electrodes form a mirrored pair with respect to a line parallel to the data line 5020 , The electrode structures of 5C and 5D are similar to that 5A and 5B except that the first and second electrodes are aligned at an angle of 45 ° with respect to the direction of the data line of the LCD device.

The 6A and 6B Figure 2 shows two other examples of the first and second electrodes formed in accordance with the present invention. As in 6A represented is the data line 6010 the LCD device is bent in the middle. In other words, the data line 6010 is V-shaped, with the opening of the V directed to the left. Each of the first electrodes 6011 has a series of V-shaped electrode segments similar to the first electrode 3011 from 3A on. The first electrode 6011 is also bent in the middle, thereby the direction of the data line 6010 to follow. Similarly, each of the second electrodes forms 6012 a strip electrode that is bent in the middle so that it faces the running direction of the data line 6010 the LCD device follows.

As in 6B shown is the data line 6020 also bent in the middle in this example. The first electrodes 6021 and the second electrodes 6022 are structured similar to those of the 3C , However, instead of being perpendicular, the first electrodes are 6021 and the second electrodes 6022 bent in the middle, allowing the direction of the data line 6020 follow the LCD device.

The 7A - 7D show the top view of the other four examples of the first and second electrodes formed according to the present invention. As in 7A As can be seen, each of the first electrodes has 7011 a series of electrode segments, each of which has expressed parts and depressed parts. Each of the second electrodes 7012 is a strip electrode. The data line 7010 the LCD device runs in the vertical direction. Both the first electrodes and the second electrodes are aligned in the same direction as the data line 7010 the LCD device.

The structure of the first electrodes 7021 , in the 7B is shown with that of 7A identical. In the example of 7B however, has each of the second electrodes 7022 Also, a series of electrode segments, each of which is provided with expressed and depressed parts. Each two adjacent first and second electrodes form a mirrored pair with respect to a line parallel to the data line 7020 , like out 7B is apparent. Both the first and second electrodes are aligned in the same vertical direction as the data line 7020 ,

The structure of the first and second electrodes 7031 . 7032 , in the 7C can be seen is similar to that of 7A , Both electrodes, both the first and second electrodes 7031 . 7032 , are at an angle of 45 ° with respect to the direction of the data line 7030 the LCD device aligned. Similarly, the structure of the first and second electrodes 7041 . 7042 , in the 7D is shown, the one of 7B similar, but with both electrodes, so the first and the second electrodes 7041 . 7042 , at an angle of 45 ° with respect to the direction of the data line 7040 aligned with the LCD device.

The 8A and 8B Figure 2 shows two further examples of the first and second electrodes formed according to the present invention. How out 8A can be seen, is the data line 8010 the LCD device is bent in the middle. In other words, the data line 8010 is V-shaped, with the opening of the V is directed to the left. Each of the first electrodes 8011 has a series of electrode segments similar to the first electrode 7011 from 7A on. The first electrodes 8011 are bent so that they are the course direction of the first data line 8010 consequences. Similarly, each of the second electrodes forms 8012 a strip electrode which is bent in the middle so that they the direction of the data line 8010 the LCD device follows.

As in 8B can be seen, is the data line 8020 also bent in the middle in this example. The first electrodes 8021 and the second electrodes 8022 have structures that are those of 7B are similar. However, instead of running in a vertical direction, the first electrodes are 8021 and the second electrodes 8022 bent so that they are the direction of the data line 8020 follow the LCD device.

The 9A - 9D Figure 12 shows the plan view of further four examples of the first and second electrodes formed in accordance with the present invention. The structure of the first and second electrodes used in 9A is similar to that of 3C except that the first electrodes and the second electrodes are arranged such that any two adjacent first and second electrodes do not form a mirrored pair with respect to a line parallel to the data line. In this case, both the first and second electrodes extend in a vertical direction, and the second electrode is shifted in the vertical direction with respect to the first electrode.

Likewise, the structures of the first and second electrodes included in the 9B . 9C and 9D are shown, similar to those of 4C . 5B and 5D except that the first electrodes and the second electrodes in each example are arranged in a manner that any two adjacent first and second electrodes do not have a mirrored pair with respect to a line parallel or at an angle of 45 ° to the direction form the data line.

In the 9B and 9D Both the first and second electrodes are at a 45 ° angle with respect to the vertical direction, and the second electrode is positionally shifted with respect to the first electrode in the running direction. In 9C Both the first and second electrodes extend in a vertical direction, and the second electrode has a positional shift with respect to the first electrode in the vertical direction.

The 10A and 10B show the plan view of further two examples of the first and second electrodes, which are formed according to the present invention. The structures of these 10A and 10B shown first and second electrodes are similar to those of 6B and 8B except that the first electrodes and the second electrodes in each example are arranged such that any two adjacent first and second electrodes do not form a mirrored pair with respect to a line extending toward the data line. It should be noted that the data line and both the first and second electrodes are in a V-shaped direction with the opening of the V directed to the left and the second electrode a positional shift with respect to the first electrode in the extending direction having.

The 11A - 11C FIG. 10 shows the plan view of further three examples of the first and second electrodes formed according to the present invention. FIG. The first and second electrodes in the 11A - 11C are equal to those who 3A - 3C and 4A - 4C show with the exception of the direction of travel. In the 3A - 3C The running direction of the two electrodes extends in the vertical direction, and in the 4A - 4C the direction of travel extends at a 45 ° angle with respect to the vertical direction. In the 11A - 11C is the running direction along the shape of a folded V.

In 11A Each of the first electrodes has a row of V-shaped electrode segments. Each of the second electrodes is a strip electrode. In 11B Each of the first electrodes is composed of a series of V-shaped electrode segments and each of the second electrodes is also a strip electrode, however, each two adjacent first electrodes form substantially a mirrored pair with respect to the folded V-shaped direction. In 11C Each of the first and second electrodes has a row of V-shaped segments, and two adjacent first and second electrodes form a substantially mirrored pair with respect to the folded V-shaped direction. In all three cases, both the first and second electrodes are aligned so as to follow substantially the folded V-shaped direction.

The first and second electrodes corresponding to the examples of 3A - 3C are substantially aligned parallel to the direction of the data line. The first and second electrodes, which in the examples of the 4A - 4C are arranged substantially at a 45 ° angle with respect to the direction of the data line. The first and second electrodes, which in the examples of the 11A - 11C are substantially aligned in one direction following a folded V-shape. According to the present invention, the first and second electrodes may also be aligned at different angles with respect to the direction of the data line. For example, they may be oriented at angles such as 15 ° -30 ° or 90 °.

As apparent from the examples shown above, the basis of the present invention is that the distance between the first and second electrodes formed on the first substrate of the lateral electric field type LCD device is not uniform. Many changes may be made in accordance with the principles of the present invention. The lateral electric field type LCD device manufactured in accordance with the present invention has a low critical voltage and produces a better contrast for the image on the display.

Although the present invention has been described in terms of its preferred embodiments, it will be understood by those skilled in the art that a variety of modifications and changes may be made without departing from the scope of the present invention as defined by the appended claims shall be.

Claims (33)

A lateral electric field-type liquid crystal display (LCD) device comprising a first substrate provided with a plurality of first electrodes and at least one second electrode interleaved with the plurality of first electrodes; a first alignment layer disposed over the plurality of first electrodes and the at least one second electrode; a second substrate; a second alignment layer underlying the second substrate; and a liquid crystal (IC) layer disposed between the first alignment layer and the second alignment layer, each of the plurality of first electrodes forming a series of electrode segments, and each two adjacent first and second electrodes having a minimum distance that is less than a maximum Distance between the two adjacent first and second electrodes. The lateral electric field type LCD device according to claim 1, characterized in that the maximum distance is three times larger than the minimum distance. The lateral electric field type LCD device according to claim 1, characterized in that the first electrodes and at least one second electrode are formed on the same layer above the first substrate, and that the first substrate and the minimum distance between two adjacent first and second electrodes between 1 micron to 4 microns. The lateral electric field type LCD device according to claim 1, characterized in that the plurality of first electrodes and the at least one second electrode are formed on two different layers above the first substrate, and the minimum distance between two adjacent first and second electrodes is between 0 μm 3 μm. The lateral electric field type LCD device according to claim 1, characterized in that the LC layer has nematic liquid crystal molecules of positive dielectric anisotropy. The lateral electric field type LCD device according to claim 1, characterized in that the LC layer comprises a liquid crystal mixture of positive dielectric anisotropic nematic liquid crystal molecules and a chiral dopant. A lateral electric field type LCD device according to claim 1, characterized in that said first alignment layer has a parallel, homogeneous alignment, and said LC layer comprises nematic liquid crystal molecules of negative dielectric anisotropy or a liquid crystal mixture consisting of negative, dielectric, anisotropic, nematic Liquid crystal molecules and a chiral dopant consists. A lateral electric field type LCD device according to claim 1, characterized in that each electrode segment of said row of electrode segments has a V-shaped electrode rotated by an angle. Lateral electric field type LCD device according to claim 8, characterized characterized in that the V-shaped electrode has a V-shaped opening angle between 90 ° and 170 °. The lateral electric field type LCD device according to claim 8, characterized in that said V-shaped electrode has a V-shaped opening angle ranging from 140 ° to 160 °. The lateral electric field type LCD device according to claim 1, characterized in that each of the at least one second electrode is a strip electrode. The lateral electric field type LCD device according to claim 1, characterized in that the first electrodes and the at least one second electrode are aligned in the same direction as a data line of the lateral electric field type LCD device. LCD device of lateral electric field type according to claim 1, characterized in that any two adjacent first electrodes form a mirrored pair. A lateral electric field type LCD device according to claim 1, characterized in that said lateral electrical field type LCD device further comprises a data line bent to a 90 ° rotated V-shape, and said plurality of first electrodes and said first at least one second electrode are bent and run parallel to the data line. A lateral electric field type LCD device according to claim 1, characterized in that said plurality of first electrodes and said at least one second electrode are aligned at a specific angle with respect to a data line of said lateral electric field type LCD device. The lateral electric field type LCD device according to claim 15, characterized in that said specific angle is 45 °. The lateral electric field type LCD device according to claim 15, characterized in that said specific angle is between 15 ° and 30 °. The lateral electric field type LCD device according to claim 15, characterized in that said specific angle is 90 °. A lateral electric field type LCD device according to claim 1, characterized in that each of said at least one second electrode has a series of electrode segments each of which is an angle-rotated V-shaped electrode. A lateral electric field type LCD device according to claim 19, characterized in that each row of electrode segments within said plurality of first electrodes is a V-shaped electrode rotated by an angle, and each two adjacent first and second electrodes are a mirrored pair form. A lateral electric field type LCD device according to claim 19, characterized in that each row of electrode segments in each of said plurality of first electrodes forms a V-shaped electrode rotated by an angle, and each two adjacent first and second electrodes are not a mirrored pair form. The lateral electric field type LCD device according to claim 1, characterized in that the row of electrode segments forms a sinusoidal electrode. The lateral electric field type LCD device according to claim 22, characterized in that each of said at least one second electrode has a row of electrode segments forming a sinusoidal electrode. The lateral electric field type LCD device according to claim 23, characterized in that each two adjacent first and second electrodes form a mirrored pair. The lateral electric field type LCD device according to claim 23, characterized in that each two adjacent first and second electrodes do not form a mirrored pair. The lateral electric field type LCD device according to claim 1, characterized in that each electrode segment of the row of electrode segments has at least one extruded part and at least one pressed-in part. A lateral electric field type LCD device according to claim 1, characterized in that each of said at least one second electrode comprises a series of electrode segments each having at least one extruded part and at least one pressed-in part. A lateral electric field-type liquid crystal display (LCD) device comprising a first substrate provided with a plurality of first electrodes and at least one second electrode interleaved with the plurality of first electrodes; further comprising a first alignment layer, the disposed over the plurality of first electrodes and the at least one second electrode; a second substrate; a second alignment layer disposed under the second substrate; and a liquid crystal (IC) layer interposed between the first alignment layer and the second alignment layer; wherein each two adjacent first and second electrodes are separated from each other by a minimum distance which gradually increases to a maximum distance and then decreases repeatedly to the minimum distance between the two adjacent first and second electrodes. The lateral electric field type LCD device according to claim 28, characterized in that the maximum distance is three times larger than the minimum distance. A lateral electric field type LCD device according to claim 28, characterized in that said plural first electrodes and said at least one second electrode are aligned at a specific angle of 45 ° with respect to a data line of said lateral electric field type LCD device. LCD device of lateral electric field type according to claim 28, characterized in that the plurality of first electrodes and said at least one second electrode are aligned in the same direction as a data line of the LCD device of lateral electric field type. The lateral electric field type LCD device according to claim 28, characterized in that many of the first electrodes and the at least one second electrode are aligned at a specific angle of 90 ° with respect to a data line of the lateral electric field type LCD device. A lateral electric field type LCD device according to claim 28, characterized in that said plural first electrodes and said at least one second electrode are aligned at a specific angle ranging from 15 ° to 30 ° with respect to a data line of the LCD device of the lateral electric field type ranges.

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