JP2013142900A - Liquid crystal display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid crystal display device that can optimize a gamma curve of a gray scale.SOLUTION: In the liquid crystal display device including a pixel array, the pixel array includes a plurality of pixels. Each pixel includes a first pixel electrode and second pixel electrode. The first pixel electrode includes a plurality of first electrode strips. The second pixel electrode includes a plurality of second electrode strips. A plurality of electrode intervals are defined between the first electrode strips and the second electrode strips by arranging the first electrode strips and the second electrode strips while intersecting them. Each electrode interval is defined by an adjacent first electrode strip and second electrode strip, and has a prescribed width. In one embodiment, at least one of the electrode intervals has a width different from the other electrode intervals. In another embodiment, a width of each of the electrode intervals changes in an extending direction of a reference line present between the adjacent first electrode strip and second electrode strip.

Description

  The present invention relates to a liquid crystal display device, and more particularly, to a pixel structure having a gradually changing electrode interval. The electrode interval refers to a distance between adjacent first pixel electrode strips and second pixel electrode strips.

  A liquid crystal display is widely used as a display device because it has the advantages of excellent image display capability and low power consumption. In general, a liquid crystal display device uses several different active array technologies. For example, twisted nematic liquid crystal displays allow light to pass by including liquid crystals that twist at different angles and liquid crystals that do not twist. However, due to the relaxation time of liquid crystal cells, twisted nematic liquid crystal display applications are limited to relatively low data transfer rates, and the technology is limited in viewing angle range.

  Other array technologies, such as in-plane switching (hereinafter referred to as IPS) structure and vertical alignment (hereinafter referred to as VA) structure, may provide more flexible display characteristics. it can. In the VA type display, when no voltage is applied, the liquid crystal is perpendicular to the substrate, so that dark display is provided between the polarizing plates arranged in crossed Nicols. When a voltage is applied, the liquid crystal rotates to an inclined position, thereby allowing light to pass through and displaying a gray scale. In the IPS technology, counter electrodes (common electrode and pixel electrode) for applying an electric field to the liquid crystal cells are arranged on the same substrate so that the liquid crystal cells can be reoriented (rotated) in the same plane. The VA type display has an advantage of a high contrast ratio and a fast response speed, and the IPS structure has an advantage that a relatively small color difference occurs at a wide viewing angle or an oblique viewing angle.

  The technology of vertical alignment / in-plane switching (hereinafter referred to as VA-IPS) uses a VA display mode for the IPS electrode structure, and the common electrode and the pixel electrode are on the same substrate. Be placed. When no voltage is applied, the liquid crystal maintains a vertical state with respect to the substrate. However, the VA-IPS display has a problem of color distortion (so-called color shift) at a wide viewing angle or an oblique viewing angle.

  In the structure of the transverse bend alignment (Transverse Bend Alignment; hereinafter referred to as TBA), there is a technique similar to the VA-IPS display. In the TBA display, in addition to the common electrode and the pixel electrode arranged on the same substrate as in the VA-IPS display, a counter electrode electrically connected to the common electrode is further arranged on the side facing the substrate. Therefore, the same voltage is applied to the counter electrode and the common electrode, and an electric field is formed with respect to the liquid crystal cell. The liquid crystal in the TBA display is held perpendicular to the substrate when no voltage is applied, similar to the VA-IPS display. Similarly, the TBA technique has a problem that a similar color shift occurs at a wide viewing angle or an oblique viewing angle.

  In general, a method for solving the problem of color shift is to increase the number of electrode intervals in a pixel (the electrode interval is a distance between a pixel electrode and a common electrode). For example, FIG. 13 shows a grayscale gamma curve diagram of a liquid crystal display device having different numbers of electrode intervals in a pixel. Compared with a liquid crystal display device having four electrode spacings in a pixel as shown in the B1 / B2 curve and the C1 / C2 curve shown in FIG. As the angle of inclination increases, it has a smoother gamma curve (this provides a better color shift function).

US Pat. No. 7,362,400

  However, as the size of the liquid crystal display device is further reduced, the size of the pixel is reduced, and therefore the number of electrode intervals arranged in the pixel is limited.

  As described above, the prior art has the above-described defects and drawbacks that have not been addressed so far, and it is necessary to address these improvements.

  The present invention relates to a liquid crystal display device. In one embodiment, a first substrate, a second substrate, a liquid crystal layer, and a pixel array are included. The second substrate is disposed to face the first substrate, so that a cell gap is defined therebetween. The liquid crystal layer is disposed in a cell gap between the first substrate and the second substrate, and the liquid crystal layer defines a plurality of liquid crystal cells. The pixel array has a plurality of pixels. These pixels are formed on the first substrate. Each pixel is connected to a corresponding liquid crystal cell and includes a first pixel electrode and a second pixel electrode. The first pixel electrode has a plurality of first pixel electrode strips. The second pixel electrode has a plurality of second pixel electrode strips. The first pixel electrode strip and the second pixel electrode strip are arranged so as to intersect with each other, whereby a plurality of electrode intervals are defined between the first pixel electrode strips and the second pixel electrode strips. It is defined by the strip and the second pixel electrode strip and has a predetermined width. A reference line is positioned between two adjacent first and second pixel electrode strips, and the adjacent first and second pixel electrode strips are connected to the reference line. The predetermined width of each electrode interval changes along the extending direction of the reference line between the adjacent first pixel electrode strips and second pixel electrode strips. In one embodiment, each pixel may include a counter electrode. The counter electrode is formed on the second substrate and is electrically connected to the second pixel electrode. In another embodiment, the counter electrode may be electrically connected to the first pixel electrode. In another embodiment, an alternating voltage or a direct voltage may be applied to the counter electrode.

  In one embodiment, the first pixel electrode further includes a ridge portion, and each first pixel electrode strip extends from the ridge portion, whereby the first pixel electrode strip and the ridge portion have a first ridge portion. An angle α1 is defined. The second pixel electrode further has a top portion and a bottom portion. The top part and the bottom part are formed apart from each other, and the top part and the bottom part are parallel to the ridge part of the first pixel electrode, and each second pixel electrode strip is connected to the first pixel electrode from either the top part or the bottom part. By extending toward the ridge portion, a second angle α2 is defined between the first ridge portion and the ridge portion of the first pixel electrode. The second angle α2 and the first angle α1 are substantially different. In another embodiment, the top and bottom of the second pixel electrode, the second pixel electrode strip, and the first pixel electrode strip of the first pixel electrode are in the ridge portion of the first pixel electrode. They are arranged symmetrically.

  In another embodiment, the first pixel electrode further includes a side portion and a ridge portion. The ridge portion extends perpendicularly from the side portion, and each first pixel electrode strip extends from either the side portion or the ridge portion. In the meantime, a first angle α1 is defined. The second pixel electrode further includes a side portion, a top portion, and a bottom portion. The side portion has a first end and a second end. The second end is opposite the first end. The top and bottom extend perpendicularly to the first and second ends of the sides, respectively. The side portion of the second pixel electrode is aligned in parallel with the side portion of the first pixel electrode. Each second pixel electrode strip extends from any one of the side, top, and bottom toward the ridge portion of the first pixel electrode, so that the second pixel electrode strip extends between the second pixel electrode strip and the ridge portion of the first pixel electrode. An angle α2 is defined. The second angle α2 and the first angle α1 are substantially different. In another embodiment, the side, top, bottom of the second pixel electrode, a plurality of second pixel electrode strips, the side of the first pixel electrode, and the first pixel electrode strip are: They are arranged symmetrically with respect to the ridge portion of the first pixel electrode.

  In one embodiment, the predetermined width of each electrode interval continuously changes along the extending direction of the reference line between the adjacent first pixel electrode strips and the second pixel electrode strips. In another embodiment, the predetermined width of each electrode interval varies discontinuously along the direction in which the reference line extends between the adjacent first and second pixel electrode strips. To do. In one embodiment, the width of at least one of the electrode intervals is different from the width of the other electrode intervals.

  In one embodiment, each first pixel electrode strip includes a straight strip, a curved strip, a diagonal strip, or a stepped strip. Each second pixel electrode strip includes a straight strip, a curved strip, a diagonal strip, or a stepped strip.

  The liquid crystal display device of the present invention includes a plurality of gate lines and a plurality of signal lines. These gate lines and signal lines are electrically connected corresponding to the pixels, and each first pixel electrode strip forms a first angle α1 with any one of the gate lines. Further, each second pixel electrode strip forms a second angle α2 with any one of the gate lines, and the second angle α2 and the first angle α1 are substantially different from each other.

  In another embodiment of the present invention, a liquid crystal display device includes a first substrate, a second substrate, a liquid crystal layer, and a pixel array. By disposing the second substrate so as to face the first substrate, a cell gap is defined therebetween. The liquid crystal layer is disposed in a cell gap between the first substrate and the second substrate, and the liquid crystal layer defines a plurality of liquid crystal cells. The pixel array has a plurality of pixels. These pixels are formed on the first substrate. Each pixel is connected to a corresponding liquid crystal cell and includes a first pixel electrode and a second pixel electrode. The first pixel electrode has a plurality of first pixel electrode strips. The second pixel electrode has a plurality of second pixel electrode strips. The first pixel electrode strip and the second pixel electrode strip are arranged so as to intersect each other, thereby defining a plurality of electrode intervals therebetween. Each electrode interval is defined by the adjacent first pixel electrode strip and second pixel electrode strip, and has a predetermined width, and at least one of the electrode intervals is equal to the other electrode. It is different from the width of the interval. In one embodiment, each pixel may include a counter electrode. The counter electrode is formed on the second substrate. In one embodiment, the counter electrode is electrically connected to the second pixel electrode. In another embodiment, the counter electrode may be electrically connected to the first pixel electrode. In another embodiment, an alternating voltage or a direct voltage may be applied to the counter electrode.

  In one embodiment, the first pixel electrode further includes a ridge portion, and each first pixel electrode strip extends from the ridge portion, whereby the first pixel electrode strip and the ridge portion have a first ridge portion. An angle α1 is defined. The second pixel electrode further has a top portion and a bottom portion. The top part and the bottom part are formed apart from each other, and the top part and the bottom part are parallel to the ridge part of the first pixel electrode, and each second pixel electrode strip is connected to the first pixel electrode from either the top part or the bottom part. By extending toward the ridge portion, a second angle α2 is defined between the first ridge portion and the ridge portion of the first pixel electrode. The second angle α2 and the first angle α1 are the same or substantially different from each other. In another embodiment, the top and bottom of the second pixel electrode, the second pixel electrode strip, and the plurality of first pixel electrode strips of the first pixel electrode are a ridge of the first pixel electrode. It is arranged on both sides of the part. In another embodiment, the top and bottom of the second pixel electrode, the second pixel electrode strip, and the first pixel electrode strip of the first pixel electrode are ridges of the first pixel electrode. They are arranged symmetrically with respect to the part.

  In another embodiment, the first pixel electrode further includes a side portion and a ridge portion. The ridge portion extends perpendicularly from the side portion, and each first pixel electrode strip extends from either the side portion or the ridge portion. In the meantime, a first angle α1 is defined. The second pixel electrode further includes a side portion, a top portion, and a bottom portion. The side portion has a first end and a second end. The second end is opposite the first end. The top and bottom extend perpendicularly to the first and second ends of the sides, respectively. The side portion of the second pixel electrode is aligned in parallel with the side portion of the first pixel electrode. Each second pixel electrode strip extends from any one of the side, top, and bottom toward the ridge portion of the first pixel electrode, so that the second pixel electrode strip extends between the second pixel electrode strip and the ridge portion of the first pixel electrode. An angle α2 is defined. The second angle α2 and the first angle α1 are the same or substantially different from each other. In one embodiment, the side, top, bottom of the second pixel electrode, the second pixel electrode strip, the side of the first pixel electrode, and the first pixel electrode strip are: It is disposed on both sides of the ridge portion of the pixel electrode. In a preferred embodiment, the side, top, bottom of the second pixel electrode, the second pixel electrode strip, the side of the first pixel electrode, and the first pixel electrode strip are: They are arranged symmetrically with respect to the ridge portion of the pixel electrode.

  In one embodiment, the predetermined width of each electrode interval continuously changes along the extending direction of the reference line between the adjacent first pixel electrode strips and the second pixel electrode strips. In another embodiment, the predetermined width of each electrode interval varies discontinuously along the direction in which the reference line extends between the adjacent first and second pixel electrode strips. To do. In one embodiment, the predetermined width of each electrode interval varies along the direction in which the reference line extends between adjacent first and second pixel electrode strips.

  In one embodiment, each first pixel electrode strip includes a straight strip, a curved strip, a diagonal strip or a stepped strip, and each second pixel electrode strip is a linear strip. , Including curved strips, diagonal strips or stepped strips. In another embodiment, each first pixel electrode strip and each second pixel electrode strip are divided into a first segment, a second segment, and an inclined portion, respectively. The inclined portion connects the first segment and the second segment, and is located between both.

  The liquid crystal display device of the present invention includes a plurality of gate lines and a plurality of signal lines. These gate lines and signal lines are electrically connected corresponding to the pixels. Each first pixel electrode strip makes a first angle α1 with respect to any one of the gate lines. Each second pixel electrode strip forms a second angle α2 with respect to any one of the gate lines, and the second angle α2 and the first angle α1 are substantially different.

  According to the present invention, since the electrode interval between adjacent electrode strips has a width that varies, and the electrode interval between these electrode strips has a different width, the gray scale of the liquid crystal display device The gamma curve can be optimized to achieve the best image quality.

The drawings illustrate one or more embodiments of the invention, and the principles of the invention will be described with reference to the drawings and the description of characters. The same reference numbers used in the drawings represent similar or similar parts in the embodiments.
It is a fragmentary sectional view showing the liquid crystal display at the time of no voltage application by one embodiment of the present invention. It is a fragmentary sectional view showing a liquid crystal display at the time of voltage application by one embodiment of the present invention. It is a top view which shows the electrode structure of the liquid crystal display device by one Embodiment of this invention. It is a top view which shows the electrode structure of the liquid crystal display device by one Embodiment of this invention. FIG. 3B is a partially enlarged view showing an electrode interval interposed between two electrode strips shown in FIG. 3A. It is a top view which shows the electrode structure of the liquid crystal display device by other embodiment of this invention. It is a top view which shows the electrode structure of the liquid crystal display device by one Embodiment of this invention. It is a top view which shows the electrode structure of the liquid crystal display device by other embodiment of this invention. It is a top view which shows the electrode structure of the liquid crystal display device by one Embodiment of this invention. It is a top view which shows the electrode structure of the liquid crystal display device by other embodiment of this invention. It is a top view which shows the electrode structure of the liquid crystal display device by one Embodiment of this invention. It is a top view which shows the electrode structure of the liquid crystal display device by other embodiment of this invention. It is a top view which shows the structure of the horizontal electrode of the liquid crystal display device by one Embodiment of this invention. It is a top view which shows the structure of the horizontal electrode of the liquid crystal display device by other embodiment of this invention. It is a partial top view which shows the electrode structure of the liquid crystal display device by other embodiment of this invention. FIG. 6 is a partial cross-sectional view showing a liquid crystal display device when no voltage is applied according to another embodiment of the present invention. FIG. 6 is a partial cross-sectional view showing a liquid crystal display device when a voltage is applied according to another embodiment of the present invention. It is a top view which shows the vertical pixel arrangement | sequence of the liquid crystal display device which concerns on one Embodiment of this invention. It is a top view which shows the pixel of the liquid crystal display device shown by FIG. 11A. It is a top view which shows the horizontal pixel array of the liquid crystal display device by other embodiment of this invention. It is a top view which shows the pixel of the liquid crystal display device shown by FIG. 12A. It is a graph which shows the gray scale gamma curve of the liquid crystal display device which has the number of different electrode intervals in a pixel.

  Hereinafter, embodiments of the present invention will be described. Of course, slight variations and modifications can be made without departing from the spirit and scope of the present invention, but the following description of the preferred embodiments will be made with reference to the drawings. These and other aspects will become more apparent.

  Hereinafter, the present invention will be described in detail with reference to the accompanying drawings illustrating exemplary embodiments. It should be understood that the invention can be implemented in a variety of different forms and is not limited to the disclosed embodiments. On the contrary, by providing these embodiments, those skilled in the art can make the scope of the present invention clearer and more fully understood. Similar symbols represent similar elements.

  The terminology used herein is for the purpose of describing particular embodiments only and is not to be used for limiting the interpretation of the invention. In this specification, “one” and “the above” include a plurality of meanings unless clearly stated to the contrary. Further, as used herein, the terms “comprising”, “comprising”, or “having” the presence of a feature, region, whole, step, operation, element, segment, and / or component to be described. Indicates that the presence or addition of one or more other features, regions, whole, steps, operations, elements, segments, components and / or combinations thereof is not excluded.

  As used herein, terms such as “first,” “second,” and “third” are used to describe various parts, members, regions, layers, and / or cross-sections. It should be understood that the invention is not limited by parts, members, regions, layers and / or cross sections. These terms are only used to distinguish a given part, member, region, layer or section from other parts, members, regions, layers or sections. Therefore, hereinafter, the terms used as the first part, the first member, the first region, the first layer, or the cross section are referred to as the second part, the second member, the second region, and the second layer. Alternatively, use as a cross-section does not depart from the scope of the present invention.

  Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art. Further, terms as defined in commonly used dictionaries should be construed as having a meaning consistent with their meaning in the context of the related art and this disclosure, as used herein. Unless explicitly defined, it should not be interpreted in an idealized or overly formal sense.

  As used herein, “about”, “approximately” or “approximately” generally refers to numerical error or range within 20%, preferably within 10%, preferably within 5% More preferably. Unless explicitly stated herein, any numerical value referred to is meant to be inferred without an explicit explanation for an approximate value, ie, “about”, “approximately” or “approximately” .

  Hereinafter, the embodiment of the present invention will be described in detail with reference to FIGS. According to an object of the present invention, one aspect of the present invention relates to a liquid crystal display using VA-IPS technology or TBA technology, between adjacent first pixel electrode strips and second pixel electrode strips. 1 relates to a pixel structure having a changing electrode interval.

  1A and 1B are two partial sectional views showing a liquid crystal display device 100 according to an embodiment of the present invention. FIG. 1A shows an arrangement of liquid crystals of the liquid crystal display device 100 when no voltage is applied, and FIG. 1B shows an arrangement of liquid crystals of the liquid crystal display device 100 when a voltage is applied. In the present embodiment, the liquid crystal display device 100 includes a first substrate 110, a second substrate 120, a liquid crystal layer 130, and a pixel array using VA-IPS display technology. By arranging the first substrate 110 and the second substrate 120 to face each other, a cell gap is defined therebetween. The liquid crystal layer 130 is disposed in the cell gap, the cell gap is interposed between the first substrate 110 and the second substrate 120, and a plurality of liquid crystal cells are defined in the liquid crystal layer 130. The pixel array has a plurality of pixels. These pixels are formed on the first substrate 110. Each pixel is connected to a corresponding liquid crystal cell and includes a first pixel electrode and a second pixel electrode. The first pixel electrode has a plurality of first pixel electrode strips 172 and 173. The second pixel electrode has a plurality of second pixel electrode strips 162, 163 and 164. As shown in FIGS. 1A and 1B, the structure of the liquid crystal display device 100 is more clearly defined by a cross section obtained along a substantially intersecting line between the second pixel electrode strip and the first pixel electrode strip. Can be expressed as 1A and 1B, only a partial cross-sectional view of a pixel of the liquid crystal display device 100 is shown for the purpose of showing a detailed structure.

  As shown in FIG. 1A, the first substrate 110 and the second substrate 120 are arranged to face each other, thereby defining a cell gap. The liquid crystal layer 130 is disposed in the cell gap, the cell gap is interposed between the first substrate 110 and the second substrate 120, and a plurality of liquid crystal cells are defined in the liquid crystal layer 130 (see FIG. 1A shows only one liquid crystal cell). Each liquid crystal cell includes a plurality of liquid crystals 132. Note that the insulating layer 140 and the protective layer 150 are each formed over the first substrate 110. As shown in FIG. 1A, since no voltage is applied to the liquid crystal display device 100, all liquid crystals are perpendicular to the surfaces of the first substrate 110 and the second substrate 120.

According to the present invention, each pixel is connected to a corresponding liquid crystal cell and includes a first pixel electrode and a second pixel electrode. The first pixel electrode has a plurality of first pixel electrode strips. The second pixel electrode has a plurality of second pixel electrode strips. In FIG. 1A, the second pixel electrode strips 162, 163 and 164 of the second pixel electrode (Vcom) of the pixel are shown, and the first pixel electrode strips 172 and 173 of the first pixel electrode (Vpixel) of the pixel are shown. Show. The plurality of first pixel electrode strips 172 and 173 and the plurality of second pixel electrode strips 162, 163 and 164 are arranged so as to cross each other, so that the first pixel electrode strips 172 are adjacent to each other. The first pixel electrode strip 173 is positioned between the adjacent second pixel electrode strips 163 and 164. The plurality of electrode intervals P ₁ , P ₂ , P _3, and P ₄ are distances formed between the first pixel electrode strip 172 or 173 and the second pixel electrode strip 162, 163, or 164. Defined. Specifically, the electrode interval P ₁ is defined by the adjacent first pixel electrode strip 172 and second pixel electrode strip 162. An electrode interval P ₂ is defined by the adjacent first pixel electrode strip 172 and second pixel electrode strip 163. An electrode interval P ₃ is defined by the adjacent first pixel electrode strip 173 and second pixel electrode strip 163. An electrode interval P ₄ is defined by the adjacent first pixel electrode strip 173 and second pixel electrode strip 164. Each electrode interval has a predetermined width, and the electrode intervals P ₁ , P ₂ , P ₃ and P ₄ are not necessarily the same. Specifically, the widths of P ₃ and P ₄ are larger than the widths of P ₁ and P ₂ .

FIG. 1B shows the liquid crystal display device 100 when a voltage is applied. Since this liquid crystal display device 100 is the same as that shown in FIG. 1A, all elements are denoted by the same reference numerals. When a voltage is applied to the liquid crystal display device 100, the first pixel electrode strips 172 and 173 and the second pixel electrode strips 162, 163 and 164 generate a plurality of electric fields, thereby The liquid crystal 132 is controlled to be moved by an electric field or rotated to an inclined position. As shown in FIG. 1B, the widths of the electrode intervals P ₃ and P ₄ are not the same as the widths of the electrode intervals P ₁ and P ₂ , so the electric field ranges interposed between the electrode strips are also not the same. .

  It can be seen that various embodiments vary the width of the electrode spacing between the electrode strips. For example, FIGS. 2 to 8B are plan views showing electrode structures of a liquid crystal display device according to another embodiment of the present invention. Other elements, such as switching elements, are not shown for convenience of electrode strip design and relative position description. As shown in FIG. 2, the first pixel electrode 270 includes a plurality of first pixel electrode strips, for example, 271 to 274, 271 a to 274 a and a ridge portion (or intermediate portion) 275. In the example of this embodiment, the first pixel electrode strips 271 to 274 and 271a to 274a extend symmetrically from the ridge portion (or intermediate portion), but the extent to which the first pixel electrode strips 271 to 274 and 271a to 274a extend is not limited. Thus, a first angle α1 is defined (or formed) between each first pixel electrode strip 271, 272, 273, 274, 271 a, 272 a, 273 a and 274 a and the ridge portion (or intermediate portion) 275. Is done. The second pixel electrode 260 includes a plurality of second pixel electrode strips 261 to 265 and 261a to 265a, and a top portion 266 and a bottom portion 266a. The top portion 266 and the bottom portion 266a may be formed apart from each other, are parallel to each other, and are aligned in parallel with the ridge portion 275 of the first pixel electrode 270. The second pixel electrode strips 261, 262, 263, 264 or 265 are extended away from the top 266 toward the ridge 275 of the first pixel electrode 270, and the second pixel electrode strips 261 a, 262 a, 263 a are provided. , 264a or 265a are extended away from the bottom 266a toward the ridge 275 of the first pixel electrode 270, whereby each second pixel electrode strip and the ridge 275 of the first pixel electrode 270 are separated from each other. A second angle α2 is defined in between. The top portion 266, the bottom portion 266a, and the second pixel electrode strips 261 to 265 and 261a to 265a are formed symmetrically with respect to the ridge portion 275 of the first pixel electrode 270. As shown in FIG. 2, the second angle α2 and the first angle α1 are the same.

According to the present invention, the second pixel electrode strips 261 to 265 and 261a to 265a and the first pixel electrode strips 271 to 274 and 271a to 274a are arranged so as to intersect with each other. _1, define the _{P 2, P 3, P 4} , P 5, P 6, P 7 and _{P 8.} The electrode spacing widths of the electrode spacings P ₃ , P ₄ , P ₅ and P ₆ are all greater than the electrode spacing widths of the electrode spacings P ₁ , P ₂ , P ₇ and P ₈ . Specifically, at least one width of the electrode interval is different from the width of the other electrode interval. In this case, since the first pixel electrode strip and the second pixel electrode strip have different electrode intervals, the gray scale gamma curve of the liquid crystal display device can be optimized. Further, as shown in FIG. 2, the second pixel electrode strips 261 to 265 and 261a to 265a and the first pixel electrode strips 271 to 274 and 271a to 274a are arranged in parallel. As a result, even if the widths of the electrode intervals are different, the electrode intervals have a uniform and constant width along the extending direction of the adjacent common electrode strips or first pixel electrode strips. In this embodiment, each second pixel electrode strip and each first pixel electrode strip are linear.

  According to other embodiments, the width of each electrode interval may vary along the direction of extension of the reference line between adjacent first and second pixel electrode strips. For example, since the second pixel electrode strip and the first pixel electrode strip extend along different directions, the distance between the electrodes can be changed. In other words, the angle α1 and the angle α2 are different from each other. As shown in FIG. 3A, the second pixel electrode 360 has a plurality of second pixel electrode strips, eg, 361, 362, 363, 364 and 365, and the first pixel electrode 370 has a plurality of First pixel electrode strips 371, 372, 373 and 374 (in FIG. 3A and FIG. 3B, only the first pixel electrode strip and the second pixel electrode strip in the upper half portion with respect to the middle portion are labeled. ). Each second pixel electrode strip and each first pixel electrode strip are linear. The second pixel electrode strips 361, 362, 363, 364 and 365 are equidistant from each other, and the first pixel electrode strips 371, 372, 373 and 374 are also equidistant from each other. One pixel electrode strip extends along the first direction 301, and each second pixel electrode strip extends along the second direction 302. Since the second direction 302 and the first direction 301 are different, an acute angle θ is formed between the first direction 301 and the second direction 302. Accordingly, each of the eight electrode intervals defined by the adjacent first pixel electrode strip and second pixel electrode strip is equal to the adjacent first pixel electrode strip and second pixel electrode strip. It has a width that varies along the extending direction of the reference line in between. Accordingly, in each sectional view of the electrode structure, the electrode spacing ratio between the electrode spacings is different, and in the different sectional views, each electrode spacing has a different width along the electrode strip. The scale gamma curve can be optimized.

  As will be appreciated by those skilled in the art, as shown in FIGS. 3A and 3B, when the first pixel electrode strip and the second pixel electrode strip extend along different directions, the width of the electrode interval P is set as a reference. Defined as the distance perpendicular to the line R and formed between the first pixel electrode strip and the second pixel electrode strip. The reference line R is interposed between the adjacent second pixel electrode strip 362 and the first pixel electrode strip 372. In the present embodiment, the reference line R is a straight line. In the present embodiment, when the distance between the adjacent second pixel electrode strip 362 or first pixel electrode strip 372 and the reference line R is d, the width of the electrode interval P is P = 2 × d. The reference line R is positioned between the adjacent second pixel electrode strip 362 and the first pixel electrode strip 372, and the adjacent second pixel electrode strip 362 and the first pixel electrode strip 372 are adjacent to each other. It is symmetrical with respect to the reference line. As shown in FIGS. 3A and 3B, for example, the reference lines are sequentially arranged with the same length and / or are parallel to each other.

  FIG. 4 is another embodiment showing the electrode structure of the liquid crystal display device. As shown in FIG. 4, the second pixel electrode 460 includes a plurality of second pixel electrode strips 461, 462, 463, and 464, and the first pixel electrode 470 includes a plurality of first pixel electrodes. It has strips 471, 472 and 473. The second pixel electrode strips 461, 462, 463 and 464 are unequal from each other, and the first pixel electrode strips 471, 472 and 473 are also unequal from each other. Each first pixel electrode strip extends along the first direction 401, and each second pixel electrode strip extends along the second direction 402. Due to the difference between the second direction 402 and the first direction 401, an acute angle θ interposed between the first direction 401 and the second direction 402 is formed. As shown in FIG. 4, the electrode structure has only six electrode intervals, but the width of each electrode interval is different from each other and is continuous along the extending direction of the reference line between adjacent electrode strips. To change. Since the electrode spacing between adjacent electrode strips is varied and these electrode spacings have different widths, the gray scale gamma curve of the liquid crystal display can be optimized.

  In another embodiment, by dividing the pixel electrode strips into different segments, the width of each electrode spacing is such that the reference line extension direction between adjacent first pixel electrode strips and second pixel electrode strips. Can vary along. For example, since all the second pixel electrode strips and the first pixel electrode strip are divided into two segments, the distance between the electrodes can be changed. As shown in FIG. 5A, the second pixel electrode 560 includes a plurality of second pixel electrode strips 561, 562, 563, 564 and 565, and the first pixel electrode 570 includes a plurality of first pixels. It has pixel electrode strips 571, 572, 573 and 574. Then, the second pixel electrode strips 561, 562, 563, 564 and 565 and the first pixel electrode strips 571, 572, 573 and 574 are divided into the first portion and the second portion in the segment A and the segment B, respectively. Divided into parts. That is, each second pixel electrode strip and each first pixel electrode strip are step-like strips. In each segment of segment A and segment B, the second pixel electrode strips 561, 562, 563, 564 and 565 and the first pixel electrode strips 571, 572, 573 and 574 extend along the same direction. Since the first pixel electrode strip and the second pixel electrode strip have a discontinuous structure, the width of each electrode interval in the segment A with respect to the adjacent first pixel electrode strip and second pixel electrode strip And the width of each electrode interval in the segment B is different. Thus, each of the eight electrode intervals defined by these adjacent first and second pixel electrode strips is adjacent to the adjacent first pixel electrode strip in two segments. It has a width that varies along the direction of extension of a reference line (not shown) between the second pixel electrode strip. That is, each electrode interval changes discontinuously along the extending direction of the reference line between the adjacent first pixel electrode strip and second pixel electrode strip. For each first pixel electrode strip 571, 572, 573 and 574, the first pixel electrode strip has its first and second portions in segments A and B connected together by a ramp S. By doing so, it becomes a step-like strip. For each second pixel electrode strip 561, 562, 563, 564 and 565, the second pixel electrode strip is connected to the first and second portions of its segment A and segment B by a ramp S as well. By doing so, it becomes a step-like strip. Accordingly, in each cross section of the electrode structure and in different segments, the electrode spacing ratio between the electrode spacings is different. Thus, since the electrode intervals in different segments are different, the gray scale gamma curve of the liquid crystal display device can be optimized.

As shown in FIG. 5B, in an alternative embodiment, the second pixel electrode 560 has a plurality of second pixel electrode strips 561, 562, 563, 564 and 565. The first pixel electrode 570 has a plurality of first pixel electrode strips 571, 572, 573 and 574. The second pixel electrode strips 561, 562, 563, 564, and 565 and the first pixel electrode strips 571, 572, 573, and 574 are divided into a segment A and a segment B. In the segment A, the second pixel electrode strips 561, 562, 563, 564 and 565 and the first pixel electrode strips 571, 572, 573 and 574 extend along the first direction. On the other hand, in segment B, the first pixel electrode strips 571, 572, 573, and 574 extend along the second direction, and the second pixel electrode strips 561, 562, 563, 564, and 565 extend in the third direction. extends along, the acute angle theta ₁ formed between the first direction and the second direction to form an acute angle theta ₂ between the first direction and the third direction. Accordingly, each electrode interval of the eight electrode intervals defined by the adjacent first pixel electrode strip and the second pixel electrode strip is equal to the adjacent first pixel electrode strip and the second electrode interval in the segment A. The segment B has a uniform width along the extending direction of the reference line between the pixel electrode strips. In the segment B, the reference line between the adjacent first pixel electrode strips and the second pixel electrode strips It has a width that varies along the stretching direction. Thereby, in the cross section of different electrode structures, the electrode spacing ratio of each electrode spacing is uniform in the segment A but different in the segment B. In this way, the gray scale gamma curve of the liquid crystal display device can be optimized by having different electrode intervals along the electrode strip in different segments.

  As will be appreciated by those skilled in the art, the electrode structure shown in FIGS. 2-5B has symmetrical electrode strips, but the electrode strips may be misaligned. This makes it possible to increase the diversity of electrode spacing. For example, FIGS. 6A and 6B show crossed electrode structure embodiments of a liquid crystal display device according to two other embodiments.

  As shown in FIG. 6A, the second pixel electrode 660 has a plurality of second pixel electrode strips 661, 662, 663 and 664 on the upper side of the drawing, and a plurality of second pixels on the lower side of the drawing. It has electrode strips 665, 666, 667 and 668. The first pixel electrode 670 includes a plurality of first pixel electrode strips 671, 672, and 673 on the upper side of the drawing, and a plurality of first pixel electrode strips 675, 676, and 677 on the lower side of the drawing. Have All the first pixel electrode strips and the second pixel electrode strips are arranged at unequal distances from each other and are located on the upper side of the drawing, and on the lower side of the drawing. The first pixel electrode strips 675, 676 and 677 which are positioned are arranged so as to be shifted from each other. Note that all the first pixel electrode strips and the second pixel electrode strips are divided into the segment A and the segment B, respectively. In each segment of segment A and segment B, the first pixel electrode strip and the second pixel electrode strip extend along the same direction, but the first pixel electrode strip and the second pixel electrode strip have a discontinuous structure. Therefore, the width of each electrode interval in the segment A is different from the width of each electrode interval in the segment B. Each electrode interval described above is a distance between adjacent first pixel electrode strips and second pixel electrode strips. As shown in FIG. 6A, the electrode structure has only twelve electrode spacings (six on each side in the drawing), but with adjacent first and second pixel electrode strips. Each defined electrode spacing has a width that varies in the two segments along the direction of extension of the reference line between the adjacent first and second pixel electrode strips, and The width of the electrode spacing is different from each other. In this way, the electrode gaps that vary greatly between adjacent electrode strips and the electrode gaps between these electrode strips have different widths, so the gray scale gamma curve of the liquid crystal display device is optimal. Can be

  Similarly, as shown in FIG. 6B, the second pixel electrode 660 has a plurality of second pixel electrode strips 661, 662, 663 and 664 on the upper side of the drawing, and a plurality of second pixel electrode strips 661, 662, 663 and 664 on the lower side of the drawing. 2 pixel electrode strips 665, 666, 667 and 668. The first pixel electrode 670 includes a plurality of first pixel electrode strips 671, 672, and 673 on the upper side of the drawing, and a plurality of first pixel electrode strips 675, 676, and 677 on the lower side of the drawing. have. All the second pixel electrode strips and the first pixel electrode strips are arranged at unequal distances from each other and are located on the upper side of the drawing, and on the lower side of the drawing. The first pixel electrode strips 675, 676 and 677 which are positioned are arranged so as to be shifted from each other. All the second pixel electrode strips and the first pixel electrode strips are divided into the segment A and the segment B, respectively. In segment A, the first pixel electrode strip and the second pixel electrode strip extend along the same direction on the same side of the drawing. On the other hand, in segment B, the first pixel electrode strip and the second pixel electrode strip extend along different directions with respect to the electrode strip in segment A. As shown in FIG. 6B, the electrode structure has only 12 electrode spacings (6 on each side in the drawing), but is defined by adjacent first and second pixel electrode strips. Each electrode interval has a uniform width located between the first pixel electrode strip and the second pixel electrode strip adjacent in the segment A, but is adjacent in the segment A. Positioned between the first pixel electrode strip and the second pixel electrode strip has a varying width and the electrode spacing is different. In this case, the electrode interval between adjacent electrode strips has a multi-variable width, and the electrode interval interposed between these electrode strips has a different width. The gray scale gamma curve can be optimized.

  The embodiment shown in FIGS. 2 to 6B can be understood by any combination of embodiments. For example, in two embodiments showing the structure of the first pixel electrode 770 of FIGS. 7A and 7B, all the second pixel electrode strips of the second pixel electrode 760 and all of the first pixel electrodes 770 are shown. The first pixel electrode strips are arranged at unequal distances, and all the second pixel electrode strips and all the first pixel electrode strips are divided into three segments A, B, and C.

  As shown in FIG. 7A, in segment A and segment C, the second pixel electrode strips 761, 762, 763, and 764 and the first pixel electrode strips 771, 772, and 773 extend along the same direction. . In segment B, the first pixel electrode strips 771, 772, and 773 and the second pixel electrode strips 761, 762, 763, and 764 extend along different directions with respect to the electrode strips in segment A and segment C. Yes. The electrode structure shown in FIG. 7B is substantially similar to the electrode structure shown in FIG. 7A, with the difference that the first pixel electrode strips 771, 772 and 773 located on the upper side of the drawing. Is offset from the first pixel electrode strips 775, 776 and 777 located on the lower side of the drawing. In the present embodiment, each second pixel electrode strip 761,762,763,764,765,766,767, 768 and each first pixel electrode strip 771,772,773,775,776 and 777 are curved. Strips or diagonal strips. As shown in FIGS. 7A and 7B, the electrode structure has only 12 electrode spacings (6 on each side in the drawing), but the adjacent first and second pixel electrode strips. Each electrode spacing defined by the strip varies in three segments along the extension direction of a reference line (not shown) between adjacent first and second pixel electrode strips. The widths of the electrodes are different from each other. In this way, the gray scale gamma curve of the liquid crystal display device can be optimized by the multi-variable electrode spacing between adjacent electrode strips and the different electrode spacings formed between the electrode strips. As will be appreciated by those skilled in the art, the embodiments shown in FIGS. 2-7B all have a vertical electrode structure, but the invention is applicable to all types of electrode structures. . For example, FIGS. 8A and 8B illustrate a first pixel electrode structure embodiment according to two other embodiments, where the second pixel electrode 860 and the first pixel electrode 870 are arranged in a horizontal electrode structure. ing. As shown in FIGS. 8A and 8B, the second pixel electrode 860 includes a plurality of second pixel electrode strips, for example, 861 to 868 and 861a to 868a. The first pixel electrode 870 includes a plurality of first pixel electrode strips, for example, 871-878 and 871a-878a. These second pixel electrode strips 861 to 868 and 861a to 868a and the first pixel electrode strips 871 to 878 and 871a to 878a are arranged so as to cross each other, thereby defining a plurality of electrode intervals therebetween. Each electrode interval is defined by a first pixel electrode strip and a second pixel electrode strip adjacent to each other. The first pixel electrode 870 further includes a side part 879 b and a ridge part 879. The ridge portion 879 extends vertically from the side portion 879b. In addition, each first pixel electrode strip extends from one of the side portion 879b and the ridge portion 879, so that a first angle α1 is defined between each first pixel electrode strip and the ridge portion 879. The In the exemplary embodiment, the side portion 879 b and the first pixel electrode strips 871 to 878 and 871 a to 878 a are formed symmetrically with respect to the ridge portion 879. Note that the second pixel electrode 860 further includes a side portion 869b, a top portion 869, and a bottom portion 869a. The side portion 869b has a first end and a second end. This second end is opposite the first end. A top 869 and a bottom 869a extend perpendicularly from the first and second ends of the side 869b, respectively. The side portion 869b of the second pixel electrode 860 and the side portion 879b of the first pixel electrode 870 are aligned in parallel with each other. In the present embodiment, each second pixel electrode strip extends from one of the side portion 869b, the top portion 869, and the bottom portion 869a toward the ridge portion 879 of the first pixel electrode 870. A second angle α2 is defined between the second pixel electrode strip and the ridge portion 879 of the first pixel electrode 870. In this example, the top portion 869, the bottom portion 869a, the side portion 869b, and the second pixel electrode strips 861 to 868 and 861a to 868a are arranged symmetrically with respect to the ridge portion 879 of the first pixel electrode 870. The electrode structure shown in FIG. 8A is similar to the electrode structure shown in FIG. 2 and includes all the second pixel electrode strips 861 to 868 and 861a to 868a, and the first pixel electrode strips 871 to 871. 878 and 871a-878a are arrange | positioned in parallel, and the width | variety of an electrode space | interval differs. In the exemplary embodiment, the first angle α1 is the same as the second angle α2. The electrode structure shown in FIG. 8B is similar to the electrode structure shown in FIG. 3A, and the second pixel electrode strips 861 to 868 and 861a to 868 extend along one direction. The pixel electrode strips 871-878 and 871a-878a extend along different directions. In other words, the first angle α1 and the second angle α2 are substantially different from each other, thereby defining a plurality of electrode intervals. These electrode intervals are equal to the second pixel electrode strip adjacent to the first angle α1. The width varies along the extending direction of the reference line between the pixel electrode and the pixel electrode.

  In another embodiment, the first pixel electrode strip and the second pixel electrode strip are divided into a plurality of different segments, and in each segment, the width of each electrode interval is equal to the adjacent first pixel electrode strip. And the second pixel electrode strip may vary along the extending direction of the reference line. As shown in FIG. 9, the first pixel electrode 970 includes a plurality of first pixel electrode strips 971, 972 and 973. The second pixel electrode 960 has a plurality of second pixel electrode strips 961 and 962. In this embodiment, adjacent first and second pixel electrode strips have a mirror structure (or symmetry) relative to a reference line therebetween. Further, the first pixel electrode strips 971, 972 and 973 and the second pixel electrode strips 961 and 962 respectively include a first portion, a second portion and a third portion in the segments A, B, C and D. Divided into a part and a fourth part. That is, each first pixel electrode strip and second pixel electrode strip is a sawtooth strip. Therefore, each of the electrode intervals among the four electrode intervals defined by the adjacent first and second pixel electrode strips has a width that varies differently in the segments A, B, C, and D. Is supposed to have. For example, with respect to the electrode interval defined by the first pixel electrode strip 971 and the second pixel electrode strip 961, the width of the electrode interval in the segment A gradually decreases from the top to the bottom on the drawing, The width of the electrode interval in the segment B is gradually widened from the top to the bottom on the drawing, and the width of the electrode interval in the segment C is gradually narrowed from the top to the bottom on the drawing, The width of the electrode interval in the segment D gradually increases from the top to the bottom on the drawing. In this way, it is possible to optimize the gray scale gamma curve of the liquid crystal display device because it has differently varying electrode spacings along the direction of extension of the reference line between the electrode strips in different segments. .

  The structural embodiment of the first pixel electrode shown in FIGS. 2 to 9 can be applied to the VA-IPS structure or the TBA structure shown in FIGS. 1A and 1B. 10A and 10B are two partial cross-sectional views showing a liquid crystal display device 1000 according to an embodiment of the present invention. FIG. 10A shows an arrangement of liquid crystals of the liquid crystal display device 1000 when no voltage is applied, and FIG. 10B shows an arrangement of liquid crystals of the liquid crystal display device 1000 when a voltage is applied. In the present embodiment, the liquid crystal display device 1000 includes a configuration similar to that of the liquid crystal display device 100 shown in FIGS. 1A and 1B using TBA technology. In the configuration shown in FIGS. 10A and 10B, the only difference is that each pixel further includes a counter electrode 1080 as compared with the configuration shown in FIGS. 1A and 1B. The counter electrode 1080 is formed on the second substrate 1020. In one embodiment, the counter electrode 1080 is electrically connected to the second pixel electrode, and the same voltage Vcom is applied to the counter electrode 1080 and the second pixel electrode strips 1062, 1063, and 1064 when a voltage is applied. The In another embodiment of the present invention, the counter electrode 1080 is electrically connected to the first pixel electrode, and the same voltage Vcom is applied to the counter electrode 1080 and the first pixel electrode strips 1072 and 1073 when a voltage is applied. Applied. As another embodiment of the present invention, an AC voltage or a DC voltage is applied to the counter electrode 1080. In the embodiment shown in FIGS. 10A and 10B, other configurations of the liquid crystal display device, such as a liquid crystal layer 1030, a liquid crystal 1032, an insulating layer 1040, a protective layer 1050, and other features are shown in FIGS. 1A and 1B. This is substantially the same as the liquid crystal display device in the embodiment.

  In one embodiment, an AC voltage or a DC voltage is applied to the second pixel electrode, and at the same time, an AC voltage is applied to the first pixel electrode. In another embodiment, an AC voltage or a DC voltage is applied to the first pixel electrode, and at the same time, an AC voltage is applied to the second pixel electrode.

  As will be appreciated by those skilled in the art, the above-described embodiments may be applied to any type of liquid crystal display device or panel having different pixel arrangements. For example, FIG. 11a shows a pixel arrangement of a liquid crystal display device according to an embodiment of the present invention. Each pixel has the above-described configuration as shown in FIGS. 2 to 7B, for example. It has a vertical pixel structure 1110.

  As shown in FIG. 11A, the pixel array has a plurality of vertical pixel structures 1110. The plurality of gate lines 1120 are electrically connected to the vertical pixel structure 1110, and the plurality of signal lines 1130 are electrically connected to the vertical pixel structure 1110 in order to control a driving signal of each pixel. In addition, each vertical pixel structure 1110 includes a thin film transistor 1140 (Thin-film transistor: TFT). A voltage supplied to the first pixel electrode and the second pixel electrode in the vertical pixel structure 1110 is controlled by the thin film transistor 1140 as a driving device through the corresponding gate line 1120 and the corresponding signal line 1130. FIG. 11B shows an exemplary vertical pixel structure 1110, and the vertical pixel structure 1110 is electrically connected to the gate line 1120 and the signal line 1130. In this example, each first pixel electrode strip 1171 forms a first angle α1 with any one of the gate lines 1120. Note that each second pixel electrode strip 1161 forms a second angle α2 with any one of the gate lines 1120. The first angle α1 and the second angle α2 may be the same or substantially different. In this example shown in FIG. 11B, α1 = α2.

  Any other pixel structure can be applied to the electrode structure of the present invention as long as it can be applied to a liquid crystal display device or a panel. For example, FIGS. 12A and 12B show a pixel arrangement of a horizontal pixel structure in a liquid crystal display device, and each pixel includes a vertical pixel structure 1210 as disclosed above, for example, FIGS. 8A and 8B. Is disclosed. Similarly, the plurality of gate lines 1220 are electrically connected to the horizontal electrode structure 1210, and the plurality of signal lines 1230 are electrically connected to the horizontal electrode structure 1210 in order to control the driving signal of each horizontal pixel structure 1210. Connected to. Each horizontal electrode structure 1210 includes a thin film transistor 1240. A thin film transistor 1240 as a driving device controls a voltage supplied to the electrodes in the horizontal electrode structure 1210 through the gate line 1220 and the signal line 1230. FIG. 12B shows an exemplary horizontal electrode structure 1210 that is electrically connected to a corresponding gate line 1220 and a corresponding signal line 1230. In the example shown in FIG. 12B, each first pixel electrode strip 1271 forms a first angle α1 with any one of the gate lines 1220. Note that each second pixel electrode strip 1261 forms a second angle α2 with any one of the gate lines 1220. The first angle α1 and the second angle α2 may be the same or substantially different. In this example shown in FIG. 12B, α1 ≠ α2.

  In short, the present invention relates to a liquid crystal display device including a pixel array. This pixel array has a plurality of pixels. Each pixel includes a first pixel electrode and a second pixel electrode. The first pixel electrode has a plurality of first pixel electrode strips. The second pixel electrode has a plurality of second pixel electrode strips. By arranging the first pixel electrode strip and the second pixel electrode strip so as to intersect with each other, a plurality of electrode intervals are defined therebetween. Each electrode interval is defined between adjacent first pixel electrode strips and second pixel electrode strips, and has a predetermined width. At least one of the electrode intervals is different in width from the other electrode intervals. Note that the width of each electrode interval changes along the extending direction of the reference line between the adjacent first pixel electrode strip and second pixel electrode strip. Optimize the gray scale gamma curve of a liquid crystal display device by having a variable width between adjacent electrode strips and a different width between the electrode strips. Can do.

  In the above-described embodiment, each pixel may further include a counter electrode. The counter electrode is formed on the second substrate and is electrically connected to the second pixel electrode or the first pixel electrode. Alternatively, the counter electrode may be electrically connected to an AC voltage or a DC voltage.

  The above description of the exemplary embodiments of the present invention is used only for the disclosure and description of the present invention and does not include all elements necessary for the present invention, or the present invention may be It is not necessarily limited to. The teachings of the present invention allow various changes and modifications to the present invention.

  The embodiments selected and described by the present invention are used to interpret the principles of the present invention and its practical application, and the present invention and embodiments are used by others familiar with the technology in the field. However, it is trying to satisfy various specific uses planned for various changes. Other embodiments that are familiar with the technology may implement other embodiments without departing from the spirit and scope of the present invention. Accordingly, the scope of the invention should be based on the description of the appended claims and should not be defined by the above and exemplary embodiments.

100 Liquid crystal display device 110 First substrate 120 Second substrate 130 Liquid crystal layer 132 Liquid crystal 140 Insulating layer 150 Protective layers 162, 163, 164 Second pixel electrode strips 172, 173 First pixel electrode strip 260 Second pixel Electrodes 261, 262, 263, 264, 265, 261, 262a, 263a, 264a, 265a Second pixel electrode strip 266 Top 266a Bottom 270 First pixel electrodes 271, 272, 273, 274, 271a, 272a, 273a, 274a First pixel electrode strip 275 Ridge portion 301 First direction 302 Second direction 360 Second pixel electrode 361, 362, 363, 364, 365 Second pixel electrode strip 370 First pixel electrode 371, 372 , 373, 374 First pixel electrode strip 40 1 first direction 402 second direction 460 second pixel electrode 461, 462, 463, 464 second pixel electrode strip 470 first pixel electrode 471, 472, 473 first pixel electrode strip 560 second Pixel electrode 561, 562, 563, 564, 565 Second pixel electrode strip 570 First pixel electrode 571, 572, 573, 574 First pixel electrode strip 660 Second pixel electrode 661, 662, 663, 664 665, 666, 667, 668 second pixel electrode strip 670 first pixel electrode 671, 672, 673, 675, 676, 677 first pixel electrode strip 760 second pixel electrode 761, 762, 763, 764 765, 766, 767, 768 Second pixel electrode strip 770 First pixel electrode 771, 72,773,775,776,777 First pixel electrode strip 860 Second pixel electrode 861,862,863,864,865,866,867,868,861a, 862a, 863a, 864a, 865a, 866a, 867a 868a Second pixel electrode strip 869b Side 869a Bottom 869 Top 870 First pixel electrode 871, 872, 873, 874, 875, 876, 877, 878, 871a, 872a, 873a, 874a, 875a, 876a, 877a , 878a First pixel electrode strip 879 Ridge portion 879b Side portion 970 First pixel electrode 971, 972, 973 First pixel electrode strip 960 Second pixel electrode 961, 962 Second pixel electrode strip 1000 Liquid crystal display device 1010 first substrate 020 Second substrate 1030 Liquid crystal layer 1032 Liquid crystal 1040 Insulating layer 1050 Protective layers 1062, 1063, 1064 Second pixel electrode strip 1072, 1073 First pixel electrode strip 1080 Counter electrode 1110 Vertical pixel structure 1120 Gate line 1130 Signal line 1140 Thin film transistor 1161 Second pixel electrode strip 1171 First pixel electrode strip 1210 Vertical pixel structure 1220 Gate line 1230 Signal line 1240 Thin film transistor 1261 Second pixel electrode strip 1271 First pixel electrode strip A, B, C, D Segment d Distances P, P ₁ , P ₂ , P ₃ , P ₄ , P ₅ , P ₆ , P ₇ , P ₈ Electrode spacing R Reference line S Inclined portion
a1 First angle
a2 Second angle θ, θ ₁ , θ ₂ acute angle

Claims (28)

A liquid crystal display device,
A first substrate and a second substrate disposed opposite to each other and defining a cell gap therebetween;
A liquid crystal layer disposed within the cell gap and defining a plurality of liquid crystal cells;
A pixel array having a plurality of pixels formed on the first substrate and each connected to the corresponding liquid crystal cell;
Including
Each pixel includes a first pixel electrode having a plurality of first pixel electrode strips and a second pixel electrode having a plurality of second pixel electrode strips,
The plurality of first pixel electrode strips and the plurality of second pixel electrode strips are arranged to intersect with each other to define a plurality of electrode intervals therebetween;
Each electrode interval is defined by the first pixel electrode strip and the second pixel electrode strip adjacent to each other and has a predetermined width,
A reference line is positioned between the adjacent first pixel electrode strip and the second pixel electrode strip, and the adjacent first pixel electrode strip and the second pixel electrode strip are the reference. The predetermined width varies along the extending direction of the reference line between the adjacent first pixel electrode strip and the second pixel electrode strip. Liquid crystal display device.   The first pixel electrode of each pixel further includes a ridge portion, and each first pixel electrode strip is connected to the ridge portion so as to form a first angle α1 with the ridge portion. The liquid crystal display device according to claim 1.   The second pixel electrode of each pixel further has a top and a bottom, the top and the bottom are formed apart from each other, and the top and the bottom are the ridges of the first pixel electrode. Each of the second pixel electrode strips extends from either the top or the bottom toward the ridge portion of the first pixel electrode, whereby the first pixel electrode 3. The liquid crystal display device according to claim 2, wherein a second angle α <b> 2 is formed with the ridge portion, and the second angle α <b> 2 is substantially different from the first angle α <b> 1.   The top and bottom portions of the second pixel electrode, the plurality of second pixel electrode strips, and the plurality of first pixel electrode strips of the first pixel electrode are the first pixel electrodes. The liquid crystal display device according to claim 3, wherein the liquid crystal display device is disposed on both sides of the ridge portion.   The first pixel electrode further includes a side portion and a ridge portion. The ridge portion extends perpendicularly from the side portion, and each first pixel electrode strip includes a side portion and a ridge portion. 2. The liquid crystal display device according to claim 1, wherein a first angle α <b> 1 is defined between each of the first pixel electrode strips and the ridge portion by extending from either one of the liquid crystal display devices. .   The second pixel electrode further includes a side portion, a top portion, and a bottom portion, and the side portion has a first end and a second end, and the second end is the first end. The top and the bottom extend perpendicularly to the first end and the second end of the side, respectively, and the side of the second pixel electrode The second pixel electrode strips are aligned in parallel with the side portions of one pixel electrode, and each of the second pixel electrode strips is directed from one of the side portion, the top portion, and the bottom portion toward the ridge portion of the first pixel electrode. By extending, a second angle α2 is defined between each of the second pixel electrode strips and the ridge portion of the second pixel electrode, and the second angle α2 and the first angle 6. The liquid crystal display device according to claim 5, wherein the liquid crystal display device is substantially different from the angle α1.   The side, top, bottom of the second pixel electrode, the plurality of second pixel electrode strips, the side of the first pixel electrode, and the plurality of first pixel electrode strips. The liquid crystal display device according to claim 6, wherein the liquid crystal display device is arranged symmetrically with respect to the ridge portion of the first pixel electrode.   The liquid crystal display device according to claim 1, wherein the change is a continuous change.   The liquid crystal display device according to claim 1, wherein the change is a discontinuous change.   2. The liquid crystal display device according to claim 1, wherein at least one width of the plurality of electrode intervals is different from at least one other width of the plurality of electrode intervals.   Each of the first pixel electrode strips includes a straight strip, a curved strip, a diagonal strip, or a stepped strip, and each of the second pixel electrode strips includes a straight strip, a curved strip. The liquid crystal display device according to claim 1, comprising a strip, a diagonal strip, or a stepped strip.   Each pixel further includes a counter electrode, and the counter electrode is formed on the second substrate, and is electrically connected to the first pixel electrode, the second pixel electrode, and an AC voltage or a DC voltage. The liquid crystal display device according to claim 1, wherein the liquid crystal display device is connected.   A plurality of gate lines; and a plurality of signal lines, wherein the plurality of gate lines and the plurality of signal lines are electrically connected corresponding to the plurality of pixels, and the first pixel electrode strips The liquid crystal display device according to claim 1, wherein the liquid crystal display device forms a first angle α1 with any one of the plurality of gate lines.   Each of the second pixel electrode strips forms a second angle α2 with any one of the plurality of gate lines, and the second angle α2 and the first angle α1 are substantially equal to each other. The liquid crystal display device according to claim 13, wherein the liquid crystal display devices are different from each other. A liquid crystal display device,
A first substrate and a second substrate disposed opposite to each other and defining a cell gap therebetween;
A liquid crystal layer disposed within the cell gap and defining a plurality of liquid crystal cells;
A pixel array having a plurality of pixels formed on the first substrate and each connected to the corresponding liquid crystal cell;
Including
Each pixel includes a first pixel electrode having a plurality of first pixel electrode strips and a second pixel electrode having a plurality of second pixel electrode strips,
The plurality of first pixel electrode strips and the plurality of second pixel electrode strips are arranged to intersect with each other to define a plurality of electrode intervals therebetween;
Each electrode interval is defined by the adjacent first pixel electrode strip and the second pixel electrode strip and has a predetermined width, and at least one of the plurality of electrode intervals is the plurality of the plurality of electrode intervals. A liquid crystal display device, wherein each of the first pixel electrode strips and each of the second pixel electrode strips is a step-like strip, unlike at least one other width of the electrode spacing.   The first pixel electrode further includes a ridge portion, and each first pixel electrode strip extends from the ridge portion, so that the first pixel electrode strip is interposed between the first pixel electrode strip and the ridge portion. 16. The liquid crystal display device according to claim 15, wherein a first angle α1 is defined.   The second pixel electrode further includes a top portion and a bottom portion, the top portion and the bottom portion are formed apart from each other, and the top portion and the bottom portion are parallel to the ridge portion of the first pixel electrode. Each of the second pixel electrode strips extends from either the top or the bottom toward the ridge of the first pixel electrode, whereby the ridge of the first pixel electrode 17. The liquid crystal display device according to claim 16, wherein a second angle α2 is defined between the first angle α2 and the second angle α2 is the same as or substantially different from the first angle α1.   The top and bottom portions of the second pixel electrode, the plurality of second pixel electrode strips, and the plurality of first pixel electrode strips of the first pixel electrode are the first pixel electrodes. The liquid crystal display device according to claim 17, wherein the liquid crystal display device is disposed on both sides of the ridge portion.   The first pixel electrode further includes a side portion and a ridge portion, and the ridge portion extends from the side portion in a direction perpendicular to the side portion, and each first pixel electrode strip includes a side portion and a ridge portion. The liquid crystal display device according to claim 15, wherein a first angle α <b> 1 is defined between each of the first pixel electrode strips and the ridge portion by extending from any one of them. .   The second pixel electrode further includes a side portion, a top portion, and a bottom portion, and the side portion has a first end and a second end, and the second end is the first end. The top and the bottom extend perpendicularly to the first end and the second end of the side, respectively, and the side of the second pixel electrode The second pixel electrode strips are aligned in parallel with the side portions of one pixel electrode, and each of the second pixel electrode strips is directed from one of the side portion, the top portion, and the bottom portion toward the ridge portion of the first pixel electrode. By extending, a second angle α2 is defined between each of the second pixel electrode strips and the ridge portion of the first pixel electrode, and the second angle α2 and the first angle of the first pixel electrode are defined. 20. The liquid crystal display according to claim 19, wherein the angle α1 is the same or substantially different from the angle α1. Location.   The side, top, bottom of the second pixel electrode, the plurality of second pixel electrode strips, the side of the first pixel electrode, and the plurality of first pixel electrode strips. The liquid crystal display device according to claim 20, wherein the liquid crystal display device is arranged symmetrically with respect to the ridge portion of the first pixel electrode.   The predetermined width of each electrode interval is continuously changed along an extending direction of a reference line between the adjacent first pixel electrode strip and the second pixel electrode strip. The liquid crystal display device according to claim 15.   The predetermined width of each electrode interval varies discontinuously along a reference line extending direction between the adjacent first pixel electrode strips and the second pixel electrode strips. The liquid crystal display device according to claim 15.   The predetermined width of each of the electrode intervals varies along the extending direction of a reference line between the adjacent first pixel electrode strips and the second pixel electrode strips. 15. The liquid crystal display device according to 15.   Each pixel further includes a counter electrode, and the counter electrode is formed on the second substrate, and is electrically connected to the first pixel electrode, the second pixel electrode, and an AC voltage or a DC voltage. The liquid crystal display device according to claim 15, wherein the liquid crystal display device is connected.   A plurality of gate lines; and a plurality of signal lines, wherein the plurality of gate lines and the plurality of signal lines are electrically connected corresponding to the plurality of pixels, and the first pixel electrode strips The liquid crystal display device according to claim 15, wherein the liquid crystal display device forms a first angle α1 with any one of the plurality of gate lines.   Each of the second pixel electrode strips forms a second angle α2 with any one of the plurality of gate lines, and the second angle α2 and the first angle α1 are substantially equal to each other. The liquid crystal display device according to claim 26, wherein the liquid crystal display devices are different from each other.   Each of the first pixel electrode strips and each of the second pixel electrode strips is divided into a first segment, a second segment, and an inclined portion, and the inclined portion is the first segment. The liquid crystal display device according to claim 15, wherein the segment and the second segment are connected to each other and located between both.

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