WO2015111343A1 - Liquid crystal panel and liquid crystal display device - Google Patents

Liquid crystal panel and liquid crystal display device Download PDF

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Publication number
WO2015111343A1
WO2015111343A1 PCT/JP2014/083882 JP2014083882W WO2015111343A1 WO 2015111343 A1 WO2015111343 A1 WO 2015111343A1 JP 2014083882 W JP2014083882 W JP 2014083882W WO 2015111343 A1 WO2015111343 A1 WO 2015111343A1
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Prior art keywords
liquid crystal
domain
region
light
pixel
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PCT/JP2014/083882
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French (fr)
Japanese (ja)
Inventor
篤吉 粟
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堺ディスプレイプロダクト株式会社
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Publication of WO2015111343A1 publication Critical patent/WO2015111343A1/en

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133512—Light shielding layers, e.g. black matrix
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells

Definitions

  • the present invention relates to a liquid crystal panel and a liquid crystal display device including a pixel region having a plurality of domains.
  • the liquid crystal display device includes a liquid crystal panel and a backlight unit.
  • the liquid crystal panel includes a color filter and a TFT substrate.
  • the liquid crystal is sealed between the color filter and the TFT substrate.
  • the color filter includes a light-transmitting glass substrate and a BM (black matrix) formed on one surface of the glass substrate.
  • the BM is a light shielding layer provided with a large number of openings.
  • a liquid crystal panel including a multi-pixel having a plurality of sub-pixels has been proposed.
  • Each subpixel is provided with a plurality of domains by orientation division (see Patent Document 1).
  • a plurality of domains may be provided by orientation division.
  • one pixel corresponds to one opening.
  • one subpixel and one opening in the BM correspond to each other, or one subpixel and one part obtained by dividing one opening into a plurality correspond to each other.
  • a case where one normal pixel or sub-pixel and one opening correspond to each other will be exemplified.
  • an area corresponding to the opening in the liquid crystal panel is referred to as a pixel area.
  • the boundary region of the domain is a so-called dark line, and has lower translucency than the inner region of the domain. For this reason, it is desirable that the light shielding member is disposed on the dark line or outside the pixel region. However, the light shielding member may be disposed in the inner region of the domain. This is because, for example, in the case of the liquid crystal display device described in Patent Document 1, a low-luminance area (“domain line” in the text) in the internal area of each domain is blinded by a light-shielding member.
  • the pixel area has a rectangular shape, and each domain has a rectangular shape in which the pixel area is divided into two or four.
  • the translucent region of the domain is a region excluding the region shielded by the light shielding member in the inner region of the domain.
  • the present invention has been made in view of such circumstances, and a main object thereof is to provide a liquid crystal panel and a liquid crystal display device capable of improving viewing angle characteristics.
  • the liquid crystal panel according to the present invention is a liquid crystal panel including a pixel region having a plurality of domains in which liquid crystal alignment directions are different from each other, and a light shielding member disposed in the pixel region.
  • a wide range is shielded from a domain having a large area except for a region shielded by a light shielding member other than the one light shielding member, and a narrow range is shielded from a domain having a small area. It is arranged as follows.
  • the liquid crystal panel according to the present invention is characterized in that the one light shielding member is an auxiliary capacitance electrode.
  • colored layers of different colors are arranged in at least two of the pixel regions, and in a pixel region where a colored layer of one color is arranged, In a pixel region in which the area of the exclusion region is larger than the area of the exclusion region of another domain and a colored layer of another color is arranged, the area of the exclusion region of the domain corresponding to the one domain is It is characterized by being smaller than the area of the exclusion region of the domain corresponding to the domain.
  • the liquid crystal display device includes the liquid crystal panel according to the present invention and an illumination device that illuminates the liquid crystal panel from the back side.
  • the liquid crystal panel when the exclusion region of each domain is wide (or narrow), the liquid crystal panel is designed such that this domain is shielded from a wide (or narrow) range by one light shielding member.
  • the area of the light transmitting region of each domain is adjusted by one light shielding member.
  • region of each of the some domain in a pixel area becomes substantially equal.
  • the domain exclusion region is a region excluding a region shielded by a light-shielding member other than one light-shielding member in an internal region of the domain.
  • the designer of the liquid crystal panel adjusts the shape and / or arrangement position of one light-shielding member according to the size of the excluded area of each domain.
  • Such adjustment is simpler than adjusting the shapes and / or arrangement positions of all the light-shielding members according to the size of the exclusion region of each domain, for example. Therefore, there is no possibility that the burden on the designer is unnecessarily increased.
  • the area of the translucent region of each domain is adjusted by adjusting the shape and / or arrangement position of the auxiliary capacitance electrode.
  • the auxiliary capacitance electrode has a high degree of freedom in terms of shape, arrangement position, etc., compared to other light shielding members to be arranged in the pixel region. For this reason, the various characteristics regarding the video display of a liquid crystal display device can be improved simply. Even if the viewing angle characteristics of the liquid crystal display device are improved when the area of the light-transmitting region of each domain is adjusted by adjusting the shape and / or arrangement position of other light-shielding members, There is a possibility that the characteristics of the above deteriorate.
  • the area of the light transmitting region of each domain is adjusted by one light shielding member for each pixel region having a different color of the colored layer. For this reason, the areas of the light-transmitting regions of the plurality of domains in the pixel region are substantially equal regardless of the color of the colored layer.
  • the area of the light-transmitting region of each domain is adjusted by one light-shielding member. For this reason, the viewing angle characteristic of a liquid crystal display device can be improved.
  • FIG. 1 is a cross-sectional view schematically showing the configuration of the liquid crystal display device 4 according to Embodiment 1 of the present invention.
  • a hatched portion is a portion having non-translucency.
  • a portion indicated by cross hatching is a non-pixel region 52 in each TFT layer 12 described later.
  • the liquid crystal display device 4 of the present embodiment is configured as a television receiver or a display.
  • the liquid crystal display device 4 displays a color image using RGB three primary colors.
  • the liquid crystal display device 4 includes a liquid crystal panel 41 and a backlight unit (illumination device) 42.
  • the backlight unit 42 is a direct type or edge light type lighting device.
  • the backlight unit 42 constitutes the rear side of the liquid crystal display device 4.
  • the backlight unit 42 illuminates the front side of itself.
  • FIG. 2 is a plan view schematically showing the configuration of the liquid crystal panel 41 included in the liquid crystal display device 4.
  • hatched portions are shaded portions. However, hatching for the non-pixel region 52 is omitted.
  • the liquid crystal panel 41 will be described with reference to FIGS. 1 and 2.
  • the liquid crystal panel 41 constitutes the front side of the liquid crystal display device 4.
  • the liquid crystal panel 41 has a rectangular display area and a rectangular frame-shaped frame area surrounding the display area.
  • the display area of the liquid crystal panel 41 is provided with a large number of multi-pixels having two sub-pixels.
  • FIG. 2 shows multi-pixel RGB 3 pixels (that is, one picture element of multi-pixel).
  • the liquid crystal panel 41 includes a TFT substrate 1, a color filter 2, a diffusion plate 31, polarizing plates 32 and 34, a liquid crystal 33, a protective glass 35, and a sealing portion 36.
  • the diffusion plate 31, the polarizing plate 32, the TFT substrate 1, the liquid crystal 33, the color filter 2, the polarizing plate 34, and the protective glass 35 are arranged in this order from the back side to the front side in front of the backlight unit 42.
  • Each of the diffusion plate 31 and the polarizing plate 32 has translucency and has a rectangular shape.
  • the polarizing plate 32 is laminated on the rear surface of the glass substrate 11 described later of the TFT substrate 1.
  • the diffusion plate 31 is laminated on the rear surface of the polarizing plate 32.
  • the TFT substrate 1 includes a glass substrate 11, a TFT layer 12, and an alignment film 13.
  • the glass substrate 11, the TFT layer 12, and the alignment film 13 are arranged in this order from the back side to the front side.
  • the glass substrate 11 has translucency and has a rectangular shape.
  • a TFT layer 12 is laminated on the front surface of the glass substrate 11. Details of the configuration of the TFT layer 12 will be described later.
  • an alignment film 13 having translucency is laminated.
  • the color filter 2 includes a glass substrate 21, a BM 22, RGB layers 23, 23,..., A transparent electrode portion 24, and an alignment film 25.
  • the glass substrate 21, the BM 22 and the RGB layers 23, 23,..., The transparent electrode part 24, and the alignment film 25 are arranged in this order from the front side to the rear side.
  • the glass substrate 21 has translucency and has a rectangular shape.
  • a BM 22 is laminated on the rear surface of the glass substrate 21.
  • each opening 26 is closed by the RGB layer 23.
  • Each RGB layer 23 is a translucent colored layer having any one of the three primary colors RGB. Note that the liquid crystal display device 4 may have a configuration in which each opening 26 is closed with a translucent colored layer having any one color of RGBY4 color or RGBW4 color instead of the RGB layer 23.
  • Each opening 26 constitutes one sub-pixel having any one of RGB three primary colors.
  • a set of two openings 26 and 26 adjacent to each other in the vertical direction (hereinafter simply referred to as a set of openings 26 and 26) constitutes one multi-pixel.
  • a region corresponding to each opening 26 in the liquid crystal panel 41 is referred to as a pixel region 51, and portions other than the pixel regions 51, 51,... In the liquid crystal panel 41 are referred to as non-pixel regions 52. That is, each pixel region 51 includes an opening 26 and portions located on the front side and the back side of the opening 26.
  • the non-pixel region 52 includes a light shielding layer portion other than the openings 26, 26,... Of the BM 22 and portions located on the front side and the rear side of the light shielding layer portion.
  • the pixel areas 51, 51,... And the non-pixel area 52 in the TFT layer 12 are indicated by lead lines.
  • the openings 26, 26,... are not completely rectangular and are not congruent with each other.
  • the pair of openings 26 and 26 are mirror images of each other.
  • the pair of openings 26, 26 located on the leftmost side shown in FIG. 2 is a rectangular shape in which the upper opening 26 is cut out in a rectangular shape at the upper right corner, and the lower opening 26 is It is a rectangular shape with the lower right corner cut out into a rectangular shape.
  • the leftmost opening 26 shown in FIG. 2 is shorter in the vertical direction than the openings 26 and 26 located in the second and third positions from the left side, but is longer in the left-right direction. It's long.
  • each opening 26 is appropriately designed for each pair of openings 26 and 26 so as to satisfy a predetermined design condition.
  • the pixel region 51 corresponding to the leftmost opening 26 illustrated in FIG. 2 is referred to as a pixel region 51 r when distinguished from other pixel regions 51.
  • the pixel areas 51 and 51 corresponding to the openings 26 and 26 located second and third from the left are referred to as pixel areas 51g and 51b, respectively.
  • the RGB layer 23 arranged in the pixel region 51r has an R color.
  • the RGB layer 23 arranged in the pixel region 51g (or the pixel region 51b) has G color (or B color).
  • the transparent electrode portion 24 functions as a common electrode facing a pixel electrode (described later) of the TFT substrate 1.
  • an alignment film 25 having translucency is laminated on the rear surface of the transparent electrode portion 24.
  • a rectangular polarizing plate 34 is stacked on the front surface of the glass substrate 21.
  • a rectangular protective glass 35 is laminated on the front surface of the polarizing plate 34.
  • the polarizing plates 32 and 34 transmit linearly polarized light orthogonal to each other.
  • the TFT substrate 1 and the color filter 2 are arranged to face each other so that the alignment film 13 of the TFT substrate 1 and the alignment film 25 of the color filter 2 face each other.
  • the sealing portion 36 has a rectangular frame shape having a light shielding property.
  • the sealing portion 36 is bonded to the frame regions of the TFT substrate 1 and the color filter 2 between the TFT substrate 1 and the color filter 2. Since the sealing portion 36 is interposed between the TFT substrate 1 and the color filter 2, the TFT substrate 1 and the color filter 2 are bonded via the sealing portion 36.
  • the liquid crystal 33 has translucency and is disposed between the TFT substrate 1 and the color filter 2 and in a space surrounded by the sealing portion 36. In other words, the liquid crystal 33 is sealed between the TFT substrate 1 and the color filter 2 by the sealing portion 36.
  • the arrangement of liquid crystal molecules constituting the liquid crystal 33 is determined by the surface shape of the alignment films 13 and 25. At this time, alignment division is performed so that each pixel region 51 has four regions (that is, domains) having different alignment directions of liquid crystal molecules.
  • the four domains are referred to as a first domain 531, a second domain 532, a third domain 533, and a fourth domain 534, respectively.
  • the first domain 531, the second domain 532, the third domain 533, and the fourth domain 534 are individual regions obtained by dividing the pixel region 51 into two in the vertical and horizontal directions, and the alignment directions of the liquid crystals are different from each other.
  • the first domain 531 constitutes the upper left portion of the pixel region 51.
  • the second domain 532 (the third domain 533 or the fourth domain 534) constitutes the lower left portion (lower right portion or upper right portion) of the pixel region 51.
  • the pixel region 51 includes a linear dark line 541 extending in the vertical direction and a linear dark line 542 extending in the left-right direction (illustrated by a two-dot chain line in FIG. 2).
  • the dark lines 541 and 542 are boundary regions of the first domain 531, the second domain 532, the third domain 533, and the fourth domain 534, and are cross-like lines that divide the pixel region 51 into four equal parts in the vertical and horizontal directions. It is arranged in.
  • the TFT layer 12 includes a plurality of TFTs and pixel electrodes (not shown). Each TFT has a light shielding property, and each pixel electrode has a light transmitting property. Each of the TFT and the pixel electrode has a one-to-one correspondence with the pixel region 51.
  • the TFT is arranged so as to overlap the gate wiring portion 17 described later in the non-pixel region 52 in the vicinity of the pixel region 51. That is, the front side of the TFT is shielded from light by the light shielding layer portion of the BM 22, and the rear side is shielded from light by the gate wiring portion 17.
  • the pixel electrode is disposed in the pixel region 51 and faces the opening 26 of the color filter 2 (and thus the RGB layer 23 closing the opening 26).
  • the drain electrode and the pixel electrode of the TFT for each pixel region 51 are electrically connected in a one-to-one correspondence via the drain wiring portion 18 described later.
  • the TFT layer 12 includes a plurality of Cs electrode portions (auxiliary capacitance electrodes) 14, 14,..., A plurality of first Cs wiring portions 151, 151,..., A second Cs wiring portion 152, 152,. , 4Cs wiring portions 154, 154,..., 5Cs wiring portions 155, 155,..., Source wiring portions 16, 16,..., And gate wiring portions 17, 17,. .. Are provided.
  • Each Cs electrode section 14, first Cs wiring section 151, second Cs wiring section 152, third Cs wiring section 153, fourth Cs wiring section 154, fifth Cs wiring section 155, source wiring section 16, gate wiring section 17, and drain wiring section 18 is a light-shielding member. It is desirable that the light shielding member is disposed in the non-pixel region 52 or on the dark lines 541 and 542. This is because if a light shielding member is disposed in the non-pixel region 52, there is no possibility that the light shielding member inhibits light transmission in the pixel region 51. In addition, if a light shielding member is provided on the dark lines 541 and 542 having low translucency, the adverse effects of the light shielding member can be ignored.
  • the Cs electrode unit 14 is for keeping the voltage applied to the liquid crystal 33 constant, and therefore it does not make sense to arrange it in the non-pixel region 52.
  • the length in the left-right direction of the Cs electrode portion 14 is longer than the width of the dark line 541, and the length in the vertical direction of the Cs electrode portion 14 needs to be longer than the width of the dark line 542. At least a part must be arranged in the pixel region 51 other than the dark lines 541 and 542. As described above, there is a case where a light shielding member has to be disposed in the pixel region 51 other than the dark lines 541 and 542.
  • the regions other than the region shielded by the light-shielding member are translucent. It is called an area. Further, the areas of the light transmitting regions of the first domain 531 to the fourth domain 534 are represented by Sa1 to Sa4. Further, of the internal regions of each of the first domain 531 to the fourth domain 534, the region excluding the region shielded by the light shielding member other than the Cs electrode portion 14 is referred to as an exclusion region. Furthermore, the areas of the excluded regions of the first domain 531 to the fourth domain 534 are represented by Sb1 to Sb4.
  • the liquid crystal panel 41 is designed such that the areas Sa1 to Sa4 of the light transmitting regions of the first domain 531 to the fourth domain 534 are as large as possible. Further, as will be described later, the liquid crystal panel 41 is designed so that the difference between the areas Sa1 to Sa4 of the first domain 531 to the fourth domain 534 falls within a predetermined range.
  • each source wiring portion 16 is arranged from the display region to the frame region in the non-pixel region 52 between the two pixel regions 51, 51 adjacent in the left-right direction. It is not arranged in the pixel regions 51, 51,.
  • the source electrode of the TFT in each pixel region 51 is electrically connected to any one of the source wiring portions 16, 16,.
  • each gate wiring portion 17 is provided between two pixel areas 51 and 51 related to a multi-pixel (between the pixel areas 51r and 51r, between the pixel areas 51g and 51g in FIG. In the non-pixel region 52 (between the regions 51b and 51b), the region extends from the display region to the frame region.
  • the gate wiring part 17 may be arranged also at the upper end part or the lower end part of the two pixel areas 51, 51 related to the multi-pixel.
  • a gate wiring portion is arranged at the upper end portion or the lower end portion of each of the pixel regions 51g and 51b. Therefore, in the upper pixel regions 51g and 51b, the lower end portions of the second domains 532 and the lower end portions of the third domains 533 are shielded from light by the gate wiring portion 17, and the lower pixel regions 51g and 51b are respectively The upper end portion of the first domain 531 and the upper end portion of the fourth domain 534 are shielded from light by the gate wiring portion 17.
  • the gate electrode of the TFT in each pixel region 51 is electrically connected to any one of the gate wiring portions 17, 17,.
  • Each of the drain wiring portions 18, 18,... is electrically connected to the drain electrode of the TFT in the non-pixel region 52, and the other end portion is electrically connected to the pixel electrode in the pixel region 51. ing.
  • the portion disposed in the pixel region 51 related to the drain wiring portion 18 is disposed on the dark line 541.
  • the portion disposed in the pixel region 51 related to the drain wiring portion 18 is mainly disposed on the dark line 541, but partially in the first domain 531 to the fourth domain 534. Of at least one of them.
  • each first Cs wiring portion 151 is located between the two pixel regions 51, 51 related to the multi-pixel (above and below the upper pixel regions 51r, 51g, 51b in FIG. 2). In the non-pixel area 52 below the pixel areas 51r, 51g, and 51b, the non-pixel area 52 extends from the display area to the frame area.
  • the second Cs wiring portions 152, 152,... are arranged on the dark line 541 of the pixel region 51r or the pixel region 51g, one for each of the pixel regions 51r, 51g.
  • One end of each second Cs wiring part 152 is electrically connected to the first Cs wiring part 151.
  • the other end of the second Cs wiring part 152 is electrically connected to the Cs electrode part 14.
  • the third Cs wiring parts 153, 153,... And the fourth Cs wiring parts 154, 154,... are arranged on the dark line 542, one for each pixel region 51.
  • the right end portion of each third Cs wiring portion 153 is electrically connected to the Cs electrode portion 14.
  • the left end of each fourth Cs wiring part 154 is electrically connected to the Cs electrode part 14.
  • Two fifth Cs wiring portions 155, 155,... are provided for each of the two pixel regions 51b, 51b related to the multi-pixel, on the dark line 542 of each pixel region 51b and in the first domain 531 to the fourth domain 534. It is arranged over at least two.
  • One Cs electrode portion 14, 14,... Is arranged for each pixel region 51. More specifically, the Cs electrode portion 14 of each pixel region 51 is disposed on the intersection of the dark lines 541 and 542. For this reason, the first domain 531 is partially shielded by the upper left portion of the Cs electrode portion 14. Similarly, the second domain 532, the third domain 533, and the fourth domain 534 are partially shielded by the lower left portion, the lower right portion, and the lower left portion of the Cs electrode portion 14. At this time, the Cs electrode portion 14 is arranged so that the areas Sa1 to Sa4 of the light transmission regions of the first domain 531 to the fourth domain 534 are equal.
  • FIG. 3 is a schematic plan view for explaining the arrangement of the Cs electrode portions 14 in the pixel region 51 provided in the liquid crystal panel 41.
  • FIG. 4 is a schematic plan view for explaining the arrangement of the Cs electrode portions 14 in the pixel region 51 provided in the conventional liquid crystal panel. In FIGS. 3 and 4, hatched portions are shaded portions.
  • the configuration of the conventional liquid crystal panel shown in FIG. 4 is substantially the same as the configuration of the liquid crystal panel 41.
  • the conventional liquid crystal panel and the liquid crystal panel 41 are different in the arrangement position of the Cs electrode portion 14.
  • 3 and 4 show the upper pixel region 51r.
  • the shapes of the first domain 531 to the fourth domain 534 and the Cs electrode portion 14 are simplified. 3 and 4 do not show a light shielding member other than the Cs electrode portion 14.
  • the areas Sb1 to Sb4 of the excluded regions of the first domain 531 to the fourth domain 534 have a relationship of Sb1 ⁇ Sb4> Sb2 ⁇ Sb3. That is, the areas Sb1 to Sb4 of the excluded regions are unequal.
  • the Cs electrode unit 14 is arranged so that the centroid of the Cs electrode unit 14 and the intersections of the dark lines 541 and 542 coincide. Accordingly, the areas Sa1 to Sa4 of the light transmitting regions of the first domain 531 to the fourth domain 534 have a relationship of Sa1 ⁇ Sa4> Sa2 ⁇ Sa3. That is, the areas Sa1 to Sa4 of the light-transmitting regions are not uniform.
  • the non-uniformity of the areas Sa1 to Sa4 of the light-transmitting regions is the non-uniformity to the extent that the difference in area between the areas Sa1 to Sa4 of the light-transmitting regions adversely affects the viewing angle characteristics.
  • the Cs electrode portion 14 related to the upper pixel region 51r is disposed above the position where the Cs electrode portion 14 illustrated in FIG. 4 is disposed, as illustrated in FIG.
  • the arrangement position of the Cs electrode portion 14 is shifted upward as compared with the conventional case.
  • the first domain 531 and the fourth domain 534 in which the areas Sb1 and Sb4 of the exclusion region are large are shielded from a relatively wide range by the Cs electrode unit 14, and the second domain 532 in which the areas Sb2 and Sb3 of the exclusion region are small.
  • each of the third domains 533 is shielded from light in a relatively narrow range by the Cs electrode unit 14.
  • the first domain 531 and the fourth domain 534 shown in FIG. 3 each have a light-transmitting region narrower than the first domain 531 and the fourth domain 534 shown in FIG. 4, and the second domain 532 shown in FIG.
  • Each of the third domains 533 has a wider light-transmitting region than each of the second domain 532 and the fourth domain 534 shown in FIG.
  • the areas Sa1 to Sa4 of the first domain 531 to the fourth domain 534 related to the upper pixel region 51r have a relationship of Sa1 ⁇ Sa2 ⁇ Sa3 ⁇ Sa4. That is, the areas Sa1 to Sa4 of the light transmitting region are substantially equal.
  • the uniformity of the areas Sa1 to Sa4 of the light-transmitting regions is equal to the extent that the difference in area between the areas Sa1 to Sa4 of the light-transmitting regions does not adversely affect the viewing angle characteristics.
  • the areas Sb1 to Sb4 of the first domain 531 to the fourth domain 534 are Sb1 ⁇ Sb4 ⁇ Sb2 ⁇ It has a relationship of Sb3. That is, the areas Sb1 to Sb4 of the excluded regions are unequal.
  • the Cs electrode portion 14 related to the upper pixel region 51g (or the lower pixel region 51r) is disposed below the conventional arrangement position.
  • the arrangement position of the Cs electrode portion 14 is shifted downward as compared with the conventional case.
  • the first domain 531 and the fourth domain 534 each having a small area Sb1 and Sb4 of the excluded region are shielded from a relatively narrow range by the Cs electrode unit 14, and the second domain 532 having a large area Sb2 and Sb3 of the excluded region.
  • each of the third domains 533 is shielded from light in a relatively wide range by the Cs electrode portion 14.
  • the areas Sa1 to Sa4 of the first domain 531 to the fourth domain 534 relating to the upper pixel area 51g (or the lower pixel area 51r) have the relationship of Sa1 ⁇ Sa2 ⁇ Sa3 ⁇ Sa4. Have. That is, the areas Sa1 to Sa4 of the light transmitting region are substantially equal.
  • the non-uniformity of the areas Sb1 to Sb4 of the excluded regions differs for each pixel region 51 (Sb1 ⁇ Sb4 ⁇ Sb2 ⁇ Sb3 in the upper pixel region 51r, but the upper pixel region 51g And Sb1 ⁇ Sb4> Sb2 ⁇ Sb3 in each of the lower pixel regions 51r). If the arrangement position of the Cs electrode portion 14 is designed as in the prior art, the non-uniformity of the areas Sa1 to Sa4 of the translucent region cannot be eliminated.
  • the arrangement positions of the Cs electrode portions 14 are designed so that the areas Sa1 to Sa4 of the light-transmitting regions are equal for each pixel region 51. For this reason, in any pixel region 51, the difference in area between the areas Sa1 to Sa4 of the light transmitting region is suppressed from adversely affecting the viewing angle characteristics.
  • the Cs electrode part 14 is a capacitor having two electrode parts arranged opposite to each other in the front-rear direction.
  • the backlight unit 42 illuminates the liquid crystal panel 41 from the rear side (back side).
  • the light emitted from the backlight unit 42 is diffused by passing through the diffusion plate 31.
  • the diffused light passes through the polarizing plate 32 and then enters the TFT substrate 1.
  • the light incident on the TFT substrate 1 passes through the glass substrate 11, the pixel electrode, and the alignment film 13 in order, and then enters the liquid crystal 33.
  • the light incident on the liquid crystal 33 passes through the liquid crystal 33 as it is.
  • the light transmitted through the liquid crystal 33 enters the color filter 2.
  • the light incident on the color filter 2 passes through the alignment film 25, the transparent electrode portion 24, the RGB layers 23, 23,... Closing the openings 26, 26,.
  • the light transmitted through the liquid crystal 33 as it is is emitted from the color filter 2 and then blocked by the polarizing plate 34.
  • the light polarized by the liquid crystal 33 is emitted from the color filter 2, then sequentially passes through the polarizing plate 34 and the protective glass 35, and is emitted to the outside. As a result, a color image is displayed in the display area of the liquid crystal panel 41.
  • the liquid crystal panel 41 includes multi-pixels and the alignment is divided. Moreover, the areas Sa1 to Sa4 of the first domain 531 to the fourth domain 534 in each pixel region 51 are substantially equal. For this reason, the viewing angle characteristics are improved compared to the case where the pixel is not a multi-pixel, the alignment is not divided, or the areas Sa1 to Sa4 of the light-transmitting regions are not uniform.
  • the areas Sa1 to Sa4 of the light-transmitting regions are substantially equal for all the pixel regions 51, 51,..., But are not limited to this.
  • the areas Sa1 to Sa4 of the translucent regions may be uneven.
  • the number of subpixels is not limited to two.
  • the number of domains is not limited to four.
  • the liquid crystal panel 41 includes multi-pixels
  • the present invention is not limited to this, and the liquid crystal panel 41 may include normal pixels that are not multi-pixels.
  • the case where one subpixel of the multi-pixel and the opening 26 correspond to each other is illustrated, but the present invention is not limited to this.
  • a configuration in which one subpixel and a portion obtained by dividing one opening into a plurality of portions may correspond to each other.
  • boundaries between pixel regions related to a plurality of subpixels in one opening are set by a gap provided in the transparent electrode, for example.
  • the designer of the liquid crystal display device 4 adjusts the arrangement position of the dark lines 541 and 542 and the shape, area, and / or arrangement position of the Cs electrode portion 14 to thereby adjust the area of the light transmitting region.
  • Sa1 to Sa4 are made substantially equal. This is because the arrangement positions of the dark lines 541 and 542 and the shape and arrangement position of the Cs electrode portion 14 have a higher degree of design freedom than the other parts constituting the pixel region 51. Attempts have been made to make the areas Sa1 to Sa4 of the light-transmitting regions substantially equal by adjusting the arrangement positions of the dark lines 541 and 542. However, it may not be possible to equalize to the extent that the viewing angle characteristics are not adversely affected only by adjusting the arrangement positions of the dark lines 541 and 542.
  • the designer further adjusts the shape and / or arrangement position of the Cs electrode portion 14. It is easy to adjust the shape and / or arrangement position of the Cs electrode part 14, and even if the shape and / or arrangement position of the Cs electrode part 14 is adjusted in order to improve the viewing angle characteristic, the viewing angle characteristic is obtained. It is unlikely that other characteristics will deteriorate.
  • the Cs electrode portion 14 is a member that exists in the past. That is, it is not necessary to add a new light-shielding member only to make the areas Sa1 to Sa4 of the light-transmitting regions substantially equal.
  • FIG. FIG. 5 is a plan view schematically showing the configuration of the liquid crystal panel 41 provided in the liquid crystal display device 4 according to Embodiment 2 of the present invention.
  • FIG. 5 corresponds to FIG.
  • the first Cs wiring portion 151 and the gate wiring portion 17 are not shown in FIG.
  • the liquid crystal display device 4 of the present embodiment has substantially the same configuration as the liquid crystal display device 4 of the first embodiment.
  • differences from the first embodiment will be described, and other parts corresponding to those of the first embodiment are denoted by the same reference numerals and description thereof will be omitted.
  • Each source wiring portion 16 of the first embodiment is linear in the vertical direction and is arranged in the non-pixel area 52 between the pixel areas 51 and 51 adjacent in the horizontal direction.
  • each source wiring portion 16 of the present embodiment is bent halfway, and is arranged across the third domain 533 of the left pixel region 51 and the first domain 531 of the right pixel region 51. .
  • This is because the capacitance between the drain electrode and source wiring portions 16 and 16 of the TFT in the pixel region 51 and the drain electrode and source wiring portion 16 of the TFT in the pixel regions 51 and 51 adjacent to the pixel region 51 in the left-right direction. This is because the capacities between the 16 are matched.
  • the areas Sb1 to Sb4 of the excluded regions of the first domain 531 to the fourth domain 534 shown in FIG. 5 have a relationship of Sb2>Sb4>Sb3> Sb1. That is, the areas Sb1 to Sb4 of the excluded regions are unequal. Therefore, a Cs electrode unit 141 is arranged in the pixel region 51 instead of the Cs electrode unit 14 of the first embodiment.
  • the arrangement position of the Cs electrode portion 141 is shifted downward as compared with the case where the complete rectangular Cs electrode portion is arranged so that the centroid and the intersections of the dark lines 541 and 542 coincide with each other. Further, the Cs electrode portion 141 has a shape as if the portion above the dark line 542 related to the complete rectangular Cs electrode portion is shifted to the right side and the portion below the dark line 542 is shifted to the left side. It is.
  • the areas Sa1 to Sa4 of the light transmission regions of the first domain 531 to the fourth domain 534 have a relationship of Sa1 ⁇ Sa2 ⁇ Sa3 ⁇ Sa4. That is, the areas Sa1 to Sa4 of the light transmitting region are substantially equal.
  • the liquid crystal display device 4 as described above has improved viewing angle characteristics like the liquid crystal display device 4 of the first embodiment.
  • the liquid crystal display device 4 or the liquid crystal panel 41 may include components that are not disclosed in the first and second embodiments.
  • the constituent elements (technical features) disclosed in each embodiment can be combined with each other, and a new technical feature can be formed by the combination.

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Abstract

Provided are a liquid crystal panel and a liquid crystal display device that can improve field-of-view characteristics. In a liquid crystal panel (41), differences in surface area of a light transmitting region, which is a region other than regions shielded from light by light shielding members (Cs electrode part (14), second Cs wiring part (152), and the like in FIG. 2), for each of a first domain (531) - fourth domain (534) in a pixel region (51) are kept within a prescribed range. In other words, the surface areas of the light transmitting regions are substantially equal. The reason is that the surface area of the light transmitting region for each domain is adjusted by one light shielding member (Cs electrode part (14) in FIG. 2). That is, when the excluded region, which is a region excluding the regions shielded by light shielding members other than the one light shielding member, of each domain is large (or small), this domain is shielded by the one light shielding member over a large (or small) area. Therefore, in the liquid crystal panel (41), viewing angle characteristics are improved more than when the surface areas of light transmitting regions are unequal.

Description

液晶パネル及び液晶表示装置Liquid crystal panel and liquid crystal display device
　本発明は、複数個のドメインを有する画素領域を備える液晶パネル及び液晶表示装置に関する。 The present invention relates to a liquid crystal panel and a liquid crystal display device including a pixel region having a plurality of domains.
　液晶表示装置は、液晶パネル及びバックライトユニットを備えている。液晶パネルは、カラーフィルタ及びＴＦＴ基板を備えている。液晶は、カラーフィルタとＴＦＴ基板との間に封止してある。
　カラーフィルタは、透光性を有するガラス基板と、ガラス基板の一面に形成されたＢＭ（ブラックマトリクス）とを備えている。ＢＭとは、多数個の開口が設けられている遮光層である。 The liquid crystal display device includes a liquid crystal panel and a backlight unit. The liquid crystal panel includes a color filter and a TFT substrate. The liquid crystal is sealed between the color filter and the TFT substrate.
The color filter includes a light-transmitting glass substrate and a BM (black matrix) formed on one surface of the glass substrate. The BM is a light shielding layer provided with a large number of openings.
　従来、液晶表示装置の視野角特性を向上させるために、複数個の副画素を有するマルチ画素を備える液晶パネルが提案されている。各副画素には、配向分割による複数個のドメインが設けられる（特許文献１参照）。また、マルチ画素ではない通常の画素であっても、配向分割による複数個のドメインが設けられることがある。
　通常の画素の場合、１個の画素と１個の開口とが対応する。マルチ画素の場合、１個の副画素とＢＭにおける１個の開口とが対応するか、又は、１個の副画素と１個の開口が複数個に分割されてなる一部分とが対応する。
　以下では、１個の通常の画素又は副画素と１個の開口とが対応する場合を例示する。ここで、液晶パネルにおける開口に対応する領域を画素領域という。 Conventionally, in order to improve the viewing angle characteristics of a liquid crystal display device, a liquid crystal panel including a multi-pixel having a plurality of sub-pixels has been proposed. Each subpixel is provided with a plurality of domains by orientation division (see Patent Document 1). Even in a normal pixel that is not a multi-pixel, a plurality of domains may be provided by orientation division.
In the case of a normal pixel, one pixel corresponds to one opening. In the case of multi-pixels, one subpixel and one opening in the BM correspond to each other, or one subpixel and one part obtained by dividing one opening into a plurality correspond to each other.
In the following, a case where one normal pixel or sub-pixel and one opening correspond to each other will be exemplified. Here, an area corresponding to the opening in the liquid crystal panel is referred to as a pixel area.
　ドメインの境界領域は、いわゆる暗線であり、ドメインの内部領域よりも透光性が低い。このため、遮光性部材は、暗線上、又は画素領域以外に配されることが望ましい。
　ところが、遮光性部材がドメインの内部領域に配されることがある。この理由は、例えば特許文献１に記載されている液晶表示装置の場合、各ドメインの内部領域における低輝度の領域（文中「ドメインライン」）を、遮光性部材によって目隠しするためである。 The boundary region of the domain is a so-called dark line, and has lower translucency than the inner region of the domain. For this reason, it is desirable that the light shielding member is disposed on the dark line or outside the pixel region.
However, the light shielding member may be disposed in the inner region of the domain. This is because, for example, in the case of the liquid crystal display device described in Patent Document 1, a low-luminance area (“domain line” in the text) in the internal area of each domain is blinded by a light-shielding member.
特許第４９５０２１９号公報Japanese Patent No. 4950219
　特許文献１に記載されている液晶表示装置の場合、画素領域は矩形状であり、各ドメインは画素領域が２分割又は４分割された矩形状である。ただし、ドメインの内部領域に遮光性部材が存在するため、各ドメインの透光領域の面積は互いに異なる。ここで、ドメインの透光領域とは、ドメインの内部領域において、遮光性部材によって遮光される領域を除く領域である。
　ドメインの透光領域の面積が不均等であると、透光領域の面積が略均等である場合に比べて、液晶表示装置の視野角特性は悪化する。 In the case of the liquid crystal display device described in Patent Document 1, the pixel area has a rectangular shape, and each domain has a rectangular shape in which the pixel area is divided into two or four. However, since the light-shielding member exists in the inner region of the domain, the areas of the light-transmitting regions of the domains are different from each other. Here, the translucent region of the domain is a region excluding the region shielded by the light shielding member in the inner region of the domain.
When the area of the translucent region of the domain is not uniform, the viewing angle characteristics of the liquid crystal display device are deteriorated as compared with the case where the area of the translucent region is substantially equal.
　本発明は斯かる事情に鑑みてなされたものであり、その主たる目的は、視野角特性を向上させることができる液晶パネル及び液晶表示装置を提供することにある。 The present invention has been made in view of such circumstances, and a main object thereof is to provide a liquid crystal panel and a liquid crystal display device capable of improving viewing angle characteristics.
　本発明に係る液晶パネルは、液晶の配向方向が互いに異なる複数個のドメインを有する画素領域と、該画素領域に配されている遮光性部材とを備える液晶パネルにおいて、一の遮光性部材は、該一の遮光性部材以外の遮光性部材によって遮光される領域を除く除外領域の面積が大きいドメインに対して広い範囲を遮光し、前記除外領域の面積が小さいドメインに対して狭い範囲を遮光するように配されていることを特徴とする。 The liquid crystal panel according to the present invention is a liquid crystal panel including a pixel region having a plurality of domains in which liquid crystal alignment directions are different from each other, and a light shielding member disposed in the pixel region. A wide range is shielded from a domain having a large area except for a region shielded by a light shielding member other than the one light shielding member, and a narrow range is shielded from a domain having a small area. It is arranged as follows.
　本発明に係る液晶パネルは、前記一の遮光性部材は補助容量電極であることを特徴とする。 The liquid crystal panel according to the present invention is characterized in that the one light shielding member is an auxiliary capacitance electrode.
　本発明に係る液晶パネルは、少なくとも２個の前記画素領域には、互いに異なる色の着色層が配されており、一の色の着色層が配されている画素領域においては、一のドメインの除外領域の面積が他のドメインの除外領域の面積よりも大きく、他の色の着色層が配されている画素領域においては、前記一のドメインに対応するドメインの除外領域の面積が、前記他のドメインに対応するドメインの除外領域の面積よりも小さいことを特徴とする。 In the liquid crystal panel according to the present invention, colored layers of different colors are arranged in at least two of the pixel regions, and in a pixel region where a colored layer of one color is arranged, In a pixel region in which the area of the exclusion region is larger than the area of the exclusion region of another domain and a colored layer of another color is arranged, the area of the exclusion region of the domain corresponding to the one domain is It is characterized by being smaller than the area of the exclusion region of the domain corresponding to the domain.
　本発明に係る液晶表示装置は、本発明に係る液晶パネルと、該液晶パネルを背面側から照明する照明装置とを備えることを特徴とする。 The liquid crystal display device according to the present invention includes the liquid crystal panel according to the present invention and an illumination device that illuminates the liquid crystal panel from the back side.
　本発明にあっては、液晶パネルは、各ドメインの除外領域が広い（又は狭い）場合、このドメインが一の遮光性部材によって広い（又は狭い）範囲を遮光されるように設計される。換言すれば、一の遮光性部材によって各ドメインの透光領域の面積が調整される。このため、画素領域における複数個のドメイン夫々の透光領域の面積が略均等になる。
　ここで、ドメインの除外領域とは、ドメインの内部領域において、一の遮光性部材以外の遮光性部材によって遮光される領域を除く領域である。 In the present invention, when the exclusion region of each domain is wide (or narrow), the liquid crystal panel is designed such that this domain is shielded from a wide (or narrow) range by one light shielding member. In other words, the area of the light transmitting region of each domain is adjusted by one light shielding member. For this reason, the area of the translucent area | region of each of the some domain in a pixel area becomes substantially equal.
Here, the domain exclusion region is a region excluding a region shielded by a light-shielding member other than one light-shielding member in an internal region of the domain.
　具体的には、液晶パネルの設計者が、各ドメインの除外領域の面積の大小に応じて一の遮光性部材の形状及び／又は配置位置等を調整する。このような調整は、例えば各ドメインの除外領域の面積の大小に応じて全ての遮光性部材夫々の形状及び／又は配置位置等を調整することより簡便である。従って、設計者の負担が無用に増大する虞はない。 Specifically, the designer of the liquid crystal panel adjusts the shape and / or arrangement position of one light-shielding member according to the size of the excluded area of each domain. Such adjustment is simpler than adjusting the shapes and / or arrangement positions of all the light-shielding members according to the size of the exclusion region of each domain, for example. Therefore, there is no possibility that the burden on the designer is unnecessarily increased.
　本発明にあっては、液晶パネルの設計時に、補助容量電極の形状及び／又は配置位置等を調整することによって、各ドメインの透光領域の面積が調整される。
　補助容量電極は、画素領域に配すべき他の遮光性部材に比べて形状及び配置位置等の自由度が高い。このため、液晶表示装置の映像表示に関する各種の特性を簡便に向上させることができる。
　仮に、他の遮光性部材の形状及び／又は配置位置等を調整することによって各ドメインの透光領域の面積を調整した場合、液晶表示装置の視野角特性が向上したとしても、映像表示に関する他の特性が悪化する虞がある。 In the present invention, at the time of designing the liquid crystal panel, the area of the translucent region of each domain is adjusted by adjusting the shape and / or arrangement position of the auxiliary capacitance electrode.
The auxiliary capacitance electrode has a high degree of freedom in terms of shape, arrangement position, etc., compared to other light shielding members to be arranged in the pixel region. For this reason, the various characteristics regarding the video display of a liquid crystal display device can be improved simply.
Even if the viewing angle characteristics of the liquid crystal display device are improved when the area of the light-transmitting region of each domain is adjusted by adjusting the shape and / or arrangement position of other light-shielding members, There is a possibility that the characteristics of the above deteriorate.
　本発明にあっては、着色層の色が異なる画素領域毎に、一の遮光性部材によって各ドメインの透光領域の面積が調整される。このため、着色層の色によらず、画素領域における複数個のドメイン夫々の透光領域の面積が略均等になる。 In the present invention, the area of the light transmitting region of each domain is adjusted by one light shielding member for each pixel region having a different color of the colored layer. For this reason, the areas of the light-transmitting regions of the plurality of domains in the pixel region are substantially equal regardless of the color of the colored layer.
　本発明の液晶パネル及び液晶表示装置による場合、一の遮光性部材によって各ドメインの透光領域の面積が調整されるため、透光領域の面積は略均等である。このため、液晶表示装置の視野角特性を向上させることができる。 In the case of the liquid crystal panel and the liquid crystal display device of the present invention, the area of the light-transmitting region of each domain is adjusted by one light-shielding member. For this reason, the viewing angle characteristic of a liquid crystal display device can be improved.
本発明の実施の形態１に係る液晶表示装置の構成を模式的に示す断面図である。It is sectional drawing which shows typically the structure of the liquid crystal display device which concerns on Embodiment 1 of this invention. 液晶表示装置が備える液晶パネルの構成を模式的に示す平面図である。It is a top view which shows typically the structure of the liquid crystal panel with which a liquid crystal display device is provided. 液晶パネルが備える画素領域におけるＣｓ電極部の配置を説明するための模式的な平面図である。It is a typical top view for demonstrating arrangement | positioning of the Cs electrode part in the pixel area | region with which a liquid crystal panel is provided. 従来の液晶パネルが備える画素領域におけるＣｓ電極部の配置を説明するための模式的な平面図である。It is a typical top view for demonstrating arrangement | positioning of the Cs electrode part in the pixel area | region with which the conventional liquid crystal panel is provided. 本発明の実施の形態２に係る液晶表示装置が備える液晶パネルの構成を模式的に示す平面図である。It is a top view which shows typically the structure of the liquid crystal panel with which the liquid crystal display device which concerns on Embodiment 2 of this invention is provided.
　以下、本発明を、その実施の形態を示す図面に基づいて詳述する。以下の説明では、図において矢符で示す上下、前後、及び左右を使用する。 Hereinafter, the present invention will be described in detail based on the drawings showing the embodiments thereof. In the following description, up and down, front and rear, and left and right indicated by arrows in the figure are used.
実施の形態　１．
　図１は、本発明の実施の形態１に係る液晶表示装置４の構成を模式的に示す断面図である。図１において、斜線によるハッチングで示している部分は非透光性を有する部分である。ただし、クロスハッチングで示している部分は、各後述するＴＦＴ層１２における非画素領域５２である。
　本実施の形態の液晶表示装置４は、テレビジョン受信機又はディスプレイ等として構成されている。液晶表示装置４は、ＲＧＢ三原色を用いてカラー画像を表示する。 Embodiment 1.
FIG. 1 is a cross-sectional view schematically showing the configuration of the liquid crystal display device 4 according to Embodiment 1 of the present invention. In FIG. 1, a hatched portion is a portion having non-translucency. However, a portion indicated by cross hatching is a non-pixel region 52 in each TFT layer 12 described later.
The liquid crystal display device 4 of the present embodiment is configured as a television receiver or a display. The liquid crystal display device 4 displays a color image using RGB three primary colors.
　液晶表示装置４は、液晶パネル４１及びバックライトユニット（照明装置）４２を備えている。
　バックライトユニット４２は、直下型又はエッジライト型の照明装置である。バックライトユニット４２は、液晶表示装置４の後ろ側を構成している。バックライトユニット４２は、自身よりも前側を照明する。 The liquid crystal display device 4 includes a liquid crystal panel 41 and a backlight unit (illumination device) 42.
The backlight unit 42 is a direct type or edge light type lighting device. The backlight unit 42 constitutes the rear side of the liquid crystal display device 4. The backlight unit 42 illuminates the front side of itself.
　図２は、液晶表示装置４が備える液晶パネル４１の構成を模式的に示す平面図である。図２において、斜線によるハッチングで示している部分は遮光性を有する部分である。ただし、非画素領域５２に対するハッチングは省略している。
　以下では、図１及び図２を参照しつつ、液晶パネル４１について説明する。
　液晶パネル４１は、液晶表示装置４の前側を構成している。液晶パネル４１は、矩形状の表示領域と、表示領域を囲繞する矩形枠状の額縁領域とを有する。液晶パネル４１の表示領域には、２個の副画素を有するマルチ画素が多数個備えられている。図２には、マルチ画素のＲＧＢ３画素（即ちマルチ画素の１絵素）が示されている。 FIG. 2 is a plan view schematically showing the configuration of the liquid crystal panel 41 included in the liquid crystal display device 4. In FIG. 2, hatched portions are shaded portions. However, hatching for the non-pixel region 52 is omitted.
Hereinafter, the liquid crystal panel 41 will be described with reference to FIGS. 1 and 2.
The liquid crystal panel 41 constitutes the front side of the liquid crystal display device 4. The liquid crystal panel 41 has a rectangular display area and a rectangular frame-shaped frame area surrounding the display area. The display area of the liquid crystal panel 41 is provided with a large number of multi-pixels having two sub-pixels. FIG. 2 shows multi-pixel RGB 3 pixels (that is, one picture element of multi-pixel).
　液晶パネル４１は、ＴＦＴ基板１、カラーフィルタ２、拡散板３１、偏光板３２，３４、液晶３３、保護ガラス３５、及び封止部３６を備えている。
　拡散板３１、偏光板３２、ＴＦＴ基板１、液晶３３、カラーフィルタ２、偏光板３４、及び保護ガラス３５は、バックライトユニット４２よりも前側にて、後ろ側から前側へこの順に配されている。
　拡散板３１及び偏光板３２は夫々透光性を有し、各矩形状になしてある。偏光板３２は、ＴＦＴ基板１の後述するガラス基板１１の後面に積層されている。拡散板３１は、偏光板３２の後面に積層されている。 The liquid crystal panel 41 includes a TFT substrate 1, a color filter 2, a diffusion plate 31, polarizing plates 32 and 34, a liquid crystal 33, a protective glass 35, and a sealing portion 36.
The diffusion plate 31, the polarizing plate 32, the TFT substrate 1, the liquid crystal 33, the color filter 2, the polarizing plate 34, and the protective glass 35 are arranged in this order from the back side to the front side in front of the backlight unit 42. .
Each of the diffusion plate 31 and the polarizing plate 32 has translucency and has a rectangular shape. The polarizing plate 32 is laminated on the rear surface of the glass substrate 11 described later of the TFT substrate 1. The diffusion plate 31 is laminated on the rear surface of the polarizing plate 32.
　ＴＦＴ基板１は、ガラス基板１１、ＴＦＴ層１２、及び配向膜１３を備えている。ガラス基板１１、ＴＦＴ層１２、及び配向膜１３は、後ろ側から前側へこの順に配されている。
　ガラス基板１１は透光性を有し、矩形状になしてある。ガラス基板１１の前面には、ＴＦＴ層１２が積層されている。ＴＦＴ層１２の構成の詳細については後述する。
　ＴＦＴ層１２の前面における表示領域には、透光性を有する配向膜１３が積層されている。 The TFT substrate 1 includes a glass substrate 11, a TFT layer 12, and an alignment film 13. The glass substrate 11, the TFT layer 12, and the alignment film 13 are arranged in this order from the back side to the front side.
The glass substrate 11 has translucency and has a rectangular shape. A TFT layer 12 is laminated on the front surface of the glass substrate 11. Details of the configuration of the TFT layer 12 will be described later.
In the display region on the front surface of the TFT layer 12, an alignment film 13 having translucency is laminated.
　カラーフィルタ２は、ガラス基板２１、ＢＭ２２、ＲＧＢ層２３，２３，…、透明電極部２４、及び配向膜２５を備えている。ガラス基板２１と、ＢＭ２２及びＲＧＢ層２３，２３，…と、透明電極部２４と、配向膜２５とは、前側から後ろ側へこの順に配されている。
　ガラス基板２１は透光性を有し、矩形状になしてある。ガラス基板２１の後面には、ＢＭ２２が積層されている。 The color filter 2 includes a glass substrate 21, a BM 22, RGB layers 23, 23,..., A transparent electrode portion 24, and an alignment film 25. The glass substrate 21, the BM 22 and the RGB layers 23, 23,..., The transparent electrode part 24, and the alignment film 25 are arranged in this order from the front side to the rear side.
The glass substrate 21 has translucency and has a rectangular shape. A BM 22 is laminated on the rear surface of the glass substrate 21.
　ＢＭ２２における表示領域には、各矩形状の複数個の開口２６，２６，…が設けられている。開口２６，２６，…は、上下方向及び左右方向夫々に複数個ずつ、互いに離隔配置されている。各開口２６は、ＲＧＢ層２３によって閉塞されている。各ＲＧＢ層２３は、ＲＧＢ三原色の何れか１色を有する透光性着色層である。なお、液晶表示装置４は、ＲＧＢ層２３に替えて、ＲＧＢＹ４色又はＲＧＢＷ４色等の何れか１色を有する透光性着色層で各開口２６を閉塞する構成でもよい。 In the display area of the BM 22, a plurality of rectangular openings 26, 26,... Are provided. A plurality of openings 26, 26,... Are spaced apart from each other in the vertical direction and the horizontal direction. Each opening 26 is closed by the RGB layer 23. Each RGB layer 23 is a translucent colored layer having any one of the three primary colors RGB. Note that the liquid crystal display device 4 may have a configuration in which each opening 26 is closed with a translucent colored layer having any one color of RGBY4 color or RGBW4 color instead of the RGB layer 23.
　各開口２６は、ＲＧＢ三原色の何れか１色を有する１個の副画素を構成する。上下方向に隣り合う２個一組の開口２６，２６（以下、単に一組の開口２６，２６という）は、１個のマルチ画素を構成する。以下では、液晶パネル４１における各開口２６に対応する領域を、画素領域５１といい、液晶パネル４１における画素領域５１，５１，…以外を、非画素領域５２という。即ち、各画素領域５１には、開口２６と、開口２６の前側及び後ろ側に位置している部分とが含まれている。そして、非画素領域５２には、ＢＭ２２の開口２６，２６，…以外の遮光層部分と、この遮光層部分の前側及び後ろ側に位置している部分が含まれている。図１においては、ＴＦＴ層１２における画素領域５１，５１，…及び非画素領域５２が引出線にて指し示してある。 Each opening 26 constitutes one sub-pixel having any one of RGB three primary colors. A set of two openings 26 and 26 adjacent to each other in the vertical direction (hereinafter simply referred to as a set of openings 26 and 26) constitutes one multi-pixel. Hereinafter, a region corresponding to each opening 26 in the liquid crystal panel 41 is referred to as a pixel region 51, and portions other than the pixel regions 51, 51,... In the liquid crystal panel 41 are referred to as non-pixel regions 52. That is, each pixel region 51 includes an opening 26 and portions located on the front side and the back side of the opening 26. The non-pixel region 52 includes a light shielding layer portion other than the openings 26, 26,... Of the BM 22 and portions located on the front side and the rear side of the light shielding layer portion. In FIG. 1, the pixel areas 51, 51,... And the non-pixel area 52 in the TFT layer 12 are indicated by lead lines.
　ところで、開口２６，２６，…は夫々完全な矩形ではなく、また、互いに合同でもない。ただし、一組の開口２６，２６は、互いに鏡像をなす。
　例えば、図２に示す最も左側に位置している一組の開口２６，２６は、上側の開口２６が右上隅部を矩形状に切り欠いたような矩形状であり、下側の開口２６が右下隅部を矩形状に切り欠いたような矩形状である。また、図２に示す最も左側に位置している開口２６は、左側から２番目及び３番目夫々に位置している開口２６，２６に比べると、上下方向の長さは短いが左右方向の長さは長い。 By the way, the openings 26, 26,... Are not completely rectangular and are not congruent with each other. However, the pair of openings 26 and 26 are mirror images of each other.
For example, the pair of openings 26, 26 located on the leftmost side shown in FIG. 2 is a rectangular shape in which the upper opening 26 is cut out in a rectangular shape at the upper right corner, and the lower opening 26 is It is a rectangular shape with the lower right corner cut out into a rectangular shape. In addition, the leftmost opening 26 shown in FIG. 2 is shorter in the vertical direction than the openings 26 and 26 located in the second and third positions from the left side, but is longer in the left-right direction. It's long.
　開口２６，２６，…が完全な矩形且つ合同ではない理由は、例えば、開口２６の近傍の非画素領域５２に、所要の部材を配置するスペースを確保することと、開口２６に十分な開口面積を確保することとを両立する必要があるからである。また、全ての開口２６，２６，…に対応して配置すべき部材と、一部の開口２６，２６，…に対応して配置すればよい部材とがあるからである。ここで、所要の部材とは、例えば、電極、配線部、又は、ＴＦＴ基板１とカラーフィルタ２との間のスペーサ等である。
　各開口２６の形状は、所定の設計条件を満たすよう、一組の開口２６，２６毎に適切に設計される。 The reason why the openings 26, 26,... Are not completely rectangular and congruent is that, for example, a space for arranging a required member in the non-pixel region 52 in the vicinity of the opening 26 is secured and a sufficient opening area for the opening 26 is provided. This is because it is necessary to satisfy both of these requirements. Further, there are members that should be arranged corresponding to all the openings 26, 26,... And members that should be arranged corresponding to some of the openings 26, 26,. Here, the required member is, for example, an electrode, a wiring portion, or a spacer between the TFT substrate 1 and the color filter 2.
The shape of each opening 26 is appropriately designed for each pair of openings 26 and 26 so as to satisfy a predetermined design condition.
　以下では、図２に示す最も左側の開口２６に対応する画素領域５１を他の画素領域５１と区別する場合に画素領域５１ｒという。同様に、左側から２番目及び３番目夫々に位置している開口２６，２６に対応する画素領域５１，５１を画素領域５１ｇ，５１ｂという。
　画素領域５１ｒに配されているＲＧＢ層２３はＲ色を有する。一方、画素領域５１ｇ（又は画素領域５１ｂ）に配されているＲＧＢ層２３はＧ色（又はＢ色）を有する。 Hereinafter, the pixel region 51 corresponding to the leftmost opening 26 illustrated in FIG. 2 is referred to as a pixel region 51 r when distinguished from other pixel regions 51. Similarly, the pixel areas 51 and 51 corresponding to the openings 26 and 26 located second and third from the left are referred to as pixel areas 51g and 51b, respectively.
The RGB layer 23 arranged in the pixel region 51r has an R color. On the other hand, the RGB layer 23 arranged in the pixel region 51g (or the pixel region 51b) has G color (or B color).
　ＢＭ２２及びＲＧＢ層２３，２３，…の後面における表示領域には、透明電極部２４が積層されている。透明電極部２４は、ＴＦＴ基板１の後述する画素電極に対向する共通電極として機能する。
　透明電極部２４の後面には、透光性を有する配向膜２５が積層されている。 In the display area on the rear surface of the BM 22 and the RGB layers 23, 23,. The transparent electrode portion 24 functions as a common electrode facing a pixel electrode (described later) of the TFT substrate 1.
On the rear surface of the transparent electrode portion 24, an alignment film 25 having translucency is laminated.
　ガラス基板２１の前面には、矩形状の偏光板３４が積層されている。偏光板３４の前面には、矩形状の保護ガラス３５が積層されている。偏光板３２，３４は、互いに直交する直線偏光を夫々透過する。
　ＴＦＴ基板１とカラーフィルタ２とは、ＴＦＴ基板１の配向膜１３とカラーフィルタ２の配向膜２５とが対面するようにして、対向配置されている。 A rectangular polarizing plate 34 is stacked on the front surface of the glass substrate 21. A rectangular protective glass 35 is laminated on the front surface of the polarizing plate 34. The polarizing plates 32 and 34 transmit linearly polarized light orthogonal to each other.
The TFT substrate 1 and the color filter 2 are arranged to face each other so that the alignment film 13 of the TFT substrate 1 and the alignment film 25 of the color filter 2 face each other.
　封止部３６は遮光性を有する矩形枠状になしてある。封止部３６は、ＴＦＴ基板１とカラーフィルタ２との間にて、ＴＦＴ基板１及びカラーフィルタ２夫々の額縁領域に接着している。封止部３６がＴＦＴ基板１とカラーフィルタ２との間に介在することによって、ＴＦＴ基板１とカラーフィルタ２とが封止部３６を介して接着される。
　液晶３３は透光性を有し、ＴＦＴ基板１とカラーフィルタ２との間、且つ、封止部３６に囲繞された空間に配されている。換言すれば、液晶３３は、封止部３６によって、ＴＦＴ基板１とカラーフィルタ２との間に封止されている。 The sealing portion 36 has a rectangular frame shape having a light shielding property. The sealing portion 36 is bonded to the frame regions of the TFT substrate 1 and the color filter 2 between the TFT substrate 1 and the color filter 2. Since the sealing portion 36 is interposed between the TFT substrate 1 and the color filter 2, the TFT substrate 1 and the color filter 2 are bonded via the sealing portion 36.
The liquid crystal 33 has translucency and is disposed between the TFT substrate 1 and the color filter 2 and in a space surrounded by the sealing portion 36. In other words, the liquid crystal 33 is sealed between the TFT substrate 1 and the color filter 2 by the sealing portion 36.
　液晶３３を構成する液晶分子の配列は、配向膜１３，２５の表面形状によって決定される。このとき、画素領域５１毎に、液晶分子の配向方位が互いに異なる４個の領域（即ちドメインという）を有するよう配向分割が行われる。以下では、４個のドメインを夫々第１ドメイン５３１、第２ドメイン５３２、第３ドメイン５３３、及び第４ドメイン５３４という。 The arrangement of liquid crystal molecules constituting the liquid crystal 33 is determined by the surface shape of the alignment films 13 and 25. At this time, alignment division is performed so that each pixel region 51 has four regions (that is, domains) having different alignment directions of liquid crystal molecules. Hereinafter, the four domains are referred to as a first domain 531, a second domain 532, a third domain 533, and a fourth domain 534, respectively.
　第１ドメイン５３１、第２ドメイン５３２、第３ドメイン５３３、及び第４ドメイン５３４は、画素領域５１を上下左右方向に各２分割した個々の領域であり、液晶の配向方向が互いに異なる。第１ドメイン５３１は、画素領域５１の左上部分を構成する。同様に、第２ドメイン５３２（第３ドメイン５３３又は第４ドメイン５３４）は、画素領域５１の左下部分（右下部分又は右上部分）を構成する。
　画素領域５１は、上下方向に沿う直線状の暗線５４１及び左右方向に沿う直線状の暗線５４２を有する（図２に二点鎖線で図示）。暗線５４１，５４２は、第１ドメイン５３１、第２ドメイン５３２、第３ドメイン５３３、及び第４ドメイン５３４の境界領域であり、画素領域５１を上下左右方向に概ね４等分するような十字線状に配されている。 The first domain 531, the second domain 532, the third domain 533, and the fourth domain 534 are individual regions obtained by dividing the pixel region 51 into two in the vertical and horizontal directions, and the alignment directions of the liquid crystals are different from each other. The first domain 531 constitutes the upper left portion of the pixel region 51. Similarly, the second domain 532 (the third domain 533 or the fourth domain 534) constitutes the lower left portion (lower right portion or upper right portion) of the pixel region 51.
The pixel region 51 includes a linear dark line 541 extending in the vertical direction and a linear dark line 542 extending in the left-right direction (illustrated by a two-dot chain line in FIG. 2). The dark lines 541 and 542 are boundary regions of the first domain 531, the second domain 532, the third domain 533, and the fourth domain 534, and are cross-like lines that divide the pixel region 51 into four equal parts in the vertical and horizontal directions. It is arranged in.
　ここで、ＴＦＴ層１２の構成について詳述する。
　ＴＦＴ層１２は、各複数個のＴＦＴ及び画素電極（各不図示）を備えている。各ＴＦＴは遮光性を有し、各画素電極は夫々透光性を有する。ＴＦＴ及び画素電極夫々は画素領域５１に一対一対応である。
　ＴＦＴは、画素領域５１近傍の非画素領域５２において、後述するゲート配線部１７に重ねて配されている。即ち、ＴＦＴは、前側がＢＭ２２の遮光層部分によって遮光されており、後ろ側がゲート配線部１７によって遮光されている。
　画素電極は画素領域５１に配されており、カラーフィルタ２の開口２６（延いては、開口２６を閉塞しているＲＧＢ層２３）に臨む。
　画素領域５１毎のＴＦＴのドレイン電極と画素電極とは、後述するドレイン配線部１８を介して一対一対応に電気的に接続されている。 Here, the configuration of the TFT layer 12 will be described in detail.
The TFT layer 12 includes a plurality of TFTs and pixel electrodes (not shown). Each TFT has a light shielding property, and each pixel electrode has a light transmitting property. Each of the TFT and the pixel electrode has a one-to-one correspondence with the pixel region 51.
The TFT is arranged so as to overlap the gate wiring portion 17 described later in the non-pixel region 52 in the vicinity of the pixel region 51. That is, the front side of the TFT is shielded from light by the light shielding layer portion of the BM 22, and the rear side is shielded from light by the gate wiring portion 17.
The pixel electrode is disposed in the pixel region 51 and faces the opening 26 of the color filter 2 (and thus the RGB layer 23 closing the opening 26).
The drain electrode and the pixel electrode of the TFT for each pixel region 51 are electrically connected in a one-to-one correspondence via the drain wiring portion 18 described later.
　更に、ＴＦＴ層１２は、複数個のＣｓ電極部（補助容量電極）１４，１４，…と、各複数本の第１Ｃｓ配線部１５１，１５１，…、第２Ｃｓ配線部１５２，１５２，…、第３Ｃｓ配線部１５３，１５３，…、第４Ｃｓ配線部１５４，１５４，…、第５Ｃｓ配線部１５５，１５５，…、ソース配線部１６，１６，…、ゲート配線部１７，１７，…、及びドレイン配線部１８，１８，…とを備えている。 Further, the TFT layer 12 includes a plurality of Cs electrode portions (auxiliary capacitance electrodes) 14, 14,..., A plurality of first Cs wiring portions 151, 151,..., A second Cs wiring portion 152, 152,. , 4Cs wiring portions 154, 154,..., 5Cs wiring portions 155, 155,..., Source wiring portions 16, 16,..., And gate wiring portions 17, 17,. .. Are provided.
　各Ｃｓ電極部１４、第１Ｃｓ配線部１５１、第２Ｃｓ配線部１５２、第３Ｃｓ配線部１５３、第４Ｃｓ配線部１５４、第５Ｃｓ配線部１５５、ソース配線部１６、ゲート配線部１７、及びドレイン配線部１８は、何れも遮光性部材である。遮光性部材は、非画素領域５２に配するか、又は暗線５４１，５４２上に配することが望ましい。何故ならば、非画素領域５２に遮光性部材を配すれば、画素領域５１における透光を遮光性部材が阻害する虞はないからである。また、透光性が低い暗線５４１，５４２上に遮光性部材を配すれば、遮光性部材の悪影響を無視することができるからである。
　一方、暗線５４１，５４２上以外の画素領域５１に遮光性部材を配すると、画素領域５１における透光が遮光性部材によって阻害されるため、表示品位が劣化する虞がある。 Each Cs electrode section 14, first Cs wiring section 151, second Cs wiring section 152, third Cs wiring section 153, fourth Cs wiring section 154, fifth Cs wiring section 155, source wiring section 16, gate wiring section 17, and drain wiring section 18 is a light-shielding member. It is desirable that the light shielding member is disposed in the non-pixel region 52 or on the dark lines 541 and 542. This is because if a light shielding member is disposed in the non-pixel region 52, there is no possibility that the light shielding member inhibits light transmission in the pixel region 51. In addition, if a light shielding member is provided on the dark lines 541 and 542 having low translucency, the adverse effects of the light shielding member can be ignored.
On the other hand, when a light shielding member is disposed in the pixel region 51 other than on the dark lines 541 and 542, the light transmission in the pixel region 51 is obstructed by the light shielding member, so that the display quality may be deteriorated.
　とはいえ、例えばＣｓ電極部１４は、液晶３３に印加される電圧を一定に保つためのものであるため、非画素領域５２に配置しても意味がない。また、Ｃｓ電極部１４の左右方向の長さは暗線５４１の幅よりも長く、Ｃｓ電極部１４の上下方向の長さは暗線５４２の幅よりも長くする必要があるため、Ｃｓ電極部１４の少なくとも一部は暗線５４１，５４２以外の画素領域５１に配置しなければならない。このように、暗線５４１，５４２以外の画素領域５１に遮光性部材を配置せざるを得ない場合がある。 However, for example, the Cs electrode unit 14 is for keeping the voltage applied to the liquid crystal 33 constant, and therefore it does not make sense to arrange it in the non-pixel region 52. Further, the length in the left-right direction of the Cs electrode portion 14 is longer than the width of the dark line 541, and the length in the vertical direction of the Cs electrode portion 14 needs to be longer than the width of the dark line 542. At least a part must be arranged in the pixel region 51 other than the dark lines 541 and 542. As described above, there is a case where a light shielding member has to be disposed in the pixel region 51 other than the dark lines 541 and 542.
　以下では、第１ドメイン５３１～第４ドメイン５３４夫々の内部領域（即ち、暗線５４１，５４２よりも透光性が高い領域）の内、遮光性部材に遮光されている領域を除く領域を透光領域という。また、第１ドメイン５３１～第４ドメイン５３４夫々の透光領域の面積を、Ｓa1～Ｓa4で表わす。更に、第１ドメイン５３１～第４ドメイン５３４夫々の内部領域の内、Ｃｓ電極部１４以外の遮光性部材に遮光されている領域を除く領域を除外領域という。更にまた、第１ドメイン５３１～第４ドメイン５３４夫々の除外領域の面積を、Ｓb1～Ｓb4で表わす。 In the following, among the internal regions of the first domain 531 to the fourth domain 534 (that is, regions having higher translucency than the dark lines 541 and 542), the regions other than the region shielded by the light-shielding member are translucent. It is called an area. Further, the areas of the light transmitting regions of the first domain 531 to the fourth domain 534 are represented by Sa1 to Sa4. Further, of the internal regions of each of the first domain 531 to the fourth domain 534, the region excluding the region shielded by the light shielding member other than the Cs electrode portion 14 is referred to as an exclusion region. Furthermore, the areas of the excluded regions of the first domain 531 to the fourth domain 534 are represented by Sb1 to Sb4.
　液晶パネル４１は、第１ドメイン５３１～第４ドメイン５３４夫々の透光領域の面積Ｓa1～Ｓa4が、可及的大きくなるよう設計される。
　また、液晶パネル４１は、後述するように、第１ドメイン５３１～第４ドメイン５３４夫々の透光領域の面積Ｓa1～Ｓa4の差が所定範囲内に収まるよう設計される。
　次に、Ｃｓ電極部１４，１４，…、第１Ｃｓ配線部１５１，１５１，…、第２Ｃｓ配線部１５２，１５２，…、第３Ｃｓ配線部１５３，１５３，…、第４Ｃｓ配線部１５４，１５４，…、第５Ｃｓ配線部１５５，１５５，…、ソース配線部１６，１６，…、ゲート配線部１７，１７，…、及びドレイン配線部１８，１８，…の詳細について説明する。 The liquid crystal panel 41 is designed such that the areas Sa1 to Sa4 of the light transmitting regions of the first domain 531 to the fourth domain 534 are as large as possible.
Further, as will be described later, the liquid crystal panel 41 is designed so that the difference between the areas Sa1 to Sa4 of the first domain 531 to the fourth domain 534 falls within a predetermined range.
Next, Cs electrode parts 14, 14,..., First Cs wiring parts 151, 151,..., Second Cs wiring parts 152, 152,..., Third Cs wiring parts 153, 153,. ..., details of the fifth Cs wiring parts 155, 155, ..., the source wiring parts 16, 16, ..., the gate wiring parts 17, 17, ..., and the drain wiring parts 18, 18, ....
　ソース配線部１６，１６，…夫々は上下方向に配されている。本実施の形態においては、各ソース配線部１６は、左右方向に隣接する２個の画素領域５１，５１の間の非画素領域５２にて、表示領域から額縁領域に亘って配されており、画素領域５１，５１，…には配されていない。
　各画素領域５１のＴＦＴのソース電極は、ソース配線部１６，１６，…の何れか１本に電気的に接続されている。 The source wiring sections 16, 16,... Are arranged in the vertical direction. In the present embodiment, each source wiring portion 16 is arranged from the display region to the frame region in the non-pixel region 52 between the two pixel regions 51, 51 adjacent in the left-right direction. It is not arranged in the pixel regions 51, 51,.
The source electrode of the TFT in each pixel region 51 is electrically connected to any one of the source wiring portions 16, 16,.
　ゲート配線部１７，１７，…夫々は左右方向に配されている。本実施の形態においては、各ゲート配線部１７は、マルチ画素に係る２個の画素領域５１，５１の間（図２における画素領域５１ｒ，５１ｒの間、画素領域５１ｇ，５１ｇの間、及び画素領域５１ｂ，５１ｂの間）の非画素領域５２にて、表示領域から額縁領域に亘って配されている。ただし、ゲート配線部１７は、マルチ画素に係る２個の画素領域５１，５１の上端部又は下端部にも配されていることがある。 The gate wiring parts 17, 17,... Are arranged in the left-right direction. In the present embodiment, each gate wiring portion 17 is provided between two pixel areas 51 and 51 related to a multi-pixel (between the pixel areas 51r and 51r, between the pixel areas 51g and 51g in FIG. In the non-pixel region 52 (between the regions 51b and 51b), the region extends from the display region to the frame region. However, the gate wiring part 17 may be arranged also at the upper end part or the lower end part of the two pixel areas 51, 51 related to the multi-pixel.
　図２においては、画素領域５１ｇ，５１ｂ夫々の上端部又は下端部にゲート配線部が配されている。このため、各上側の画素領域５１ｇ，５１ｂは、夫々の第２ドメイン５３２の下端部及び第３ドメイン５３３の下端部がゲート配線部１７によって遮光され、各下側の画素領域５１ｇ，５１ｂは夫々の第１ドメイン５３１の上端部及び第４ドメイン５３４の上端部がゲート配線部１７によって遮光される。
　各画素領域５１のＴＦＴのゲート電極は、ゲート配線部１７，１７，…の何れか１本に電気的に接続されている。 In FIG. 2, a gate wiring portion is arranged at the upper end portion or the lower end portion of each of the pixel regions 51g and 51b. Therefore, in the upper pixel regions 51g and 51b, the lower end portions of the second domains 532 and the lower end portions of the third domains 533 are shielded from light by the gate wiring portion 17, and the lower pixel regions 51g and 51b are respectively The upper end portion of the first domain 531 and the upper end portion of the fourth domain 534 are shielded from light by the gate wiring portion 17.
The gate electrode of the TFT in each pixel region 51 is electrically connected to any one of the gate wiring portions 17, 17,.
　ドレイン配線部１８，１８，…夫々は、一端部が非画素領域５２にてＴＦＴのドレイン電極に電気的に接続されており、他端部が画素領域５１にて画素電極に電気的に接続されている。画素領域５１ｒにおいては、ドレイン配線部１８に係る画素領域５１に配されている部分は、暗線５４１上に配されている。画素領域５１ｇ，５１ｂにおいては、ドレイン配線部１８に係る画素領域５１に配されている部分は、主に暗線５４１上に配されているが、部分的に第１ドメイン５３１～第４ドメイン５３４の内の少なくとも１個に配されている。 Each of the drain wiring portions 18, 18,... Is electrically connected to the drain electrode of the TFT in the non-pixel region 52, and the other end portion is electrically connected to the pixel electrode in the pixel region 51. ing. In the pixel region 51 r, the portion disposed in the pixel region 51 related to the drain wiring portion 18 is disposed on the dark line 541. In the pixel regions 51 g and 51 b, the portion disposed in the pixel region 51 related to the drain wiring portion 18 is mainly disposed on the dark line 541, but partially in the first domain 531 to the fourth domain 534. Of at least one of them.
　第１Ｃｓ配線部１５１，１５１，…、第２Ｃｓ配線部１５２，１５２，…、第３Ｃｓ配線部１５３，１５３，…、第４Ｃｓ配線部１５４，１５４，…、及び第５Ｃｓ配線部１５５，１５５，…の配置は、上側の画素領域５１と下側の画素領域５１とで互いに鏡像をなす。
　第１Ｃｓ配線部１５１，１５１，…夫々は左右方向に配されている。本実施の形態においては、各第１Ｃｓ配線部１５１は、マルチ画素に係る２個の画素領域５１，５１の間以外（図２における上側の画素領域５１ｒ，５１ｇ，５１ｂの上方、及び下側の画素領域５１ｒ，５１ｇ，５１ｂの下方）の非画素領域５２にて、表示領域から額縁領域に亘って配されている。 , Second Cs wiring portions 152, 152,..., Third Cs wiring portions 153, 153,..., Fourth Cs wiring portions 154, 154,..., And fifth Cs wiring portions 155, 155,. The upper pixel region 51 and the lower pixel region 51 are mirror images of each other.
The first Cs wiring portions 151, 151,... Are arranged in the left-right direction. In the present embodiment, each first Cs wiring portion 151 is located between the two pixel regions 51, 51 related to the multi-pixel (above and below the upper pixel regions 51r, 51g, 51b in FIG. 2). In the non-pixel area 52 below the pixel areas 51r, 51g, and 51b, the non-pixel area 52 extends from the display area to the frame area.
　第２Ｃｓ配線部１５２，１５２，…は、画素領域５１ｒ，５１ｇ毎に１本ずつ、夫々画素領域５１ｒ又は画素領域５１ｇの暗線５４１上に配されている。各第２Ｃｓ配線部１５２の一端部は第１Ｃｓ配線部１５１に電気的に接続されている。第２Ｃｓ配線部１５２の他端部はＣｓ電極部１４に電気的に接続されている。
　第３Ｃｓ配線部１５３，１５３，…及び第４Ｃｓ配線部１５４，１５４，…は、画素領域５１毎に夫々１本ずつ、暗線５４２上に配されている。各第３Ｃｓ配線部１５３の右端部はＣｓ電極部１４に電気的に接続されている。各第４Ｃｓ配線部１５４の左端部はＣｓ電極部１４に電気的に接続されている。
　第５Ｃｓ配線部１５５，１５５，…は、マルチ画素に係る２個の画素領域５１ｂ，５１ｂ毎に２本ずつ、各画素領域５１ｂの暗線５４２上と第１ドメイン５３１～第４ドメイン５３４の内の少なくとも２個とに亘って配されている。 The second Cs wiring portions 152, 152,... Are arranged on the dark line 541 of the pixel region 51r or the pixel region 51g, one for each of the pixel regions 51r, 51g. One end of each second Cs wiring part 152 is electrically connected to the first Cs wiring part 151. The other end of the second Cs wiring part 152 is electrically connected to the Cs electrode part 14.
The third Cs wiring parts 153, 153,... And the fourth Cs wiring parts 154, 154,... Are arranged on the dark line 542, one for each pixel region 51. The right end portion of each third Cs wiring portion 153 is electrically connected to the Cs electrode portion 14. The left end of each fourth Cs wiring part 154 is electrically connected to the Cs electrode part 14.
Two fifth Cs wiring portions 155, 155,... Are provided for each of the two pixel regions 51b, 51b related to the multi-pixel, on the dark line 542 of each pixel region 51b and in the first domain 531 to the fourth domain 534. It is arranged over at least two.
　Ｃｓ電極部１４，１４，…は、画素領域５１毎に１個ずつ配されている。更に詳細には、各画素領域５１のＣｓ電極部１４は暗線５４１，５４２の交差点上に配される。このため、第１ドメイン５３１はＣｓ電極部１４の左上部分によって部分的に遮光される。同様に、第２ドメイン５３２、第３ドメイン５３３、及び第４ドメイン５３４は、Ｃｓ電極部１４の左下部分、右下部分、及び左下部分によって部分的に遮光される。
　このとき、Ｃｓ電極部１４は、第１ドメイン５３１～第４ドメイン５３４夫々の透光領域の面積Ｓa1～Ｓa4が均等になるよう配置される。 One Cs electrode portion 14, 14,... Is arranged for each pixel region 51. More specifically, the Cs electrode portion 14 of each pixel region 51 is disposed on the intersection of the dark lines 541 and 542. For this reason, the first domain 531 is partially shielded by the upper left portion of the Cs electrode portion 14. Similarly, the second domain 532, the third domain 533, and the fourth domain 534 are partially shielded by the lower left portion, the lower right portion, and the lower left portion of the Cs electrode portion 14.
At this time, the Cs electrode portion 14 is arranged so that the areas Sa1 to Sa4 of the light transmission regions of the first domain 531 to the fourth domain 534 are equal.
　図３は、液晶パネル４１が備える画素領域５１におけるＣｓ電極部１４の配置を説明するための模式的な平面図である。図４は、従来の液晶パネルが備える画素領域５１におけるＣｓ電極部１４の配置を説明するための模式的な平面図である。図３及び図４において、斜線によるハッチングで示している部分は遮光性を有する部分である。
　ここで、図４に示す従来の液晶パネルの構成は、液晶パネル４１の構成と略同様である。従来の液晶パネルと液晶パネル４１とはＣｓ電極部１４の配置位置が異なる。 FIG. 3 is a schematic plan view for explaining the arrangement of the Cs electrode portions 14 in the pixel region 51 provided in the liquid crystal panel 41. FIG. 4 is a schematic plan view for explaining the arrangement of the Cs electrode portions 14 in the pixel region 51 provided in the conventional liquid crystal panel. In FIGS. 3 and 4, hatched portions are shaded portions.
Here, the configuration of the conventional liquid crystal panel shown in FIG. 4 is substantially the same as the configuration of the liquid crystal panel 41. The conventional liquid crystal panel and the liquid crystal panel 41 are different in the arrangement position of the Cs electrode portion 14.
　図３及び図４には上側の画素領域５１ｒを示している。ただし、第１ドメイン５３１～第４ドメイン５３４及びＣｓ電極部１４夫々の形状は簡略化してある。また、図３及び図４にはＣｓ電極部１４以外の遮光性部材を示していない。
　図２～図４に示すように、上側の画素領域５１ｒの場合、第１ドメイン５３１～第４ドメイン５３４夫々の除外領域の面積Ｓb1～Ｓb4は、Ｓb1≒Ｓb4＞Ｓb2≒Ｓb3という関係を有する。即ち、除外領域の面積Ｓb1～Ｓb4は不均等である。 3 and 4 show the upper pixel region 51r. However, the shapes of the first domain 531 to the fourth domain 534 and the Cs electrode portion 14 are simplified. 3 and 4 do not show a light shielding member other than the Cs electrode portion 14.
As shown in FIGS. 2 to 4, in the case of the upper pixel region 51r, the areas Sb1 to Sb4 of the excluded regions of the first domain 531 to the fourth domain 534 have a relationship of Sb1≈Sb4> Sb2≈Sb3. That is, the areas Sb1 to Sb4 of the excluded regions are unequal.
　従来の液晶パネルを設計する場合、Ｃｓ電極部１４は、図４に示すように、例えばＣｓ電極部１４の図心と暗線５４１，５４２の交差点とが一致するように配置される。
　従って、第１ドメイン５３１～第４ドメイン５３４夫々の透光領域の面積Ｓa1～Ｓa4は、Ｓa1≒Ｓa4＞Ｓa2≒Ｓa3という関係を有する。即ち、透光領域の面積Ｓa1～Ｓa4は不均等である。
　ここで、透光領域の面積Ｓa1～Ｓa4の不均等さとは、透光領域の面積Ｓa1～Ｓa4同士の面積の差が視野角特性に悪影響を及ぼす程度の不均等さである。 When designing a conventional liquid crystal panel, as shown in FIG. 4, for example, the Cs electrode unit 14 is arranged so that the centroid of the Cs electrode unit 14 and the intersections of the dark lines 541 and 542 coincide.
Accordingly, the areas Sa1 to Sa4 of the light transmitting regions of the first domain 531 to the fourth domain 534 have a relationship of Sa1≈Sa4> Sa2≈Sa3. That is, the areas Sa1 to Sa4 of the light-transmitting regions are not uniform.
Here, the non-uniformity of the areas Sa1 to Sa4 of the light-transmitting regions is the non-uniformity to the extent that the difference in area between the areas Sa1 to Sa4 of the light-transmitting regions adversely affects the viewing angle characteristics.
　一方、液晶パネル４１を設計する場合、上側の画素領域５１ｒに係るＣｓ電極部１４は、図３に示すように、図４に示すＣｓ電極部１４の配置位置よりも上側に配置される。いわば、Ｃｓ電極部１４の配置位置は従来よりも上側にシフトしている。
　このため、除外領域の面積Ｓb1，Ｓb4が大きい第１ドメイン５３１及び第４ドメイン５３４夫々は、Ｃｓ電極部１４によって比較的広い範囲を遮光され、除外領域の面積Ｓb2，Ｓb3が小さい第２ドメイン５３２及び第３ドメイン５３３夫々は、Ｃｓ電極部１４によって比較的狭い範囲を遮光される。故に、図３に示す第１ドメイン５３１及び第４ドメイン５３４夫々は、図４に示す第１ドメイン５３１及び第４ドメイン５３４夫々と比べて透光領域が狭くなり、図３に示す第２ドメイン５３２及び第３ドメイン５３３夫々は、図４に示す第２ドメイン５３２及び第４ドメイン５３４夫々と比べて透光領域が広くなる。 On the other hand, when designing the liquid crystal panel 41, the Cs electrode portion 14 related to the upper pixel region 51r is disposed above the position where the Cs electrode portion 14 illustrated in FIG. 4 is disposed, as illustrated in FIG. In other words, the arrangement position of the Cs electrode portion 14 is shifted upward as compared with the conventional case.
For this reason, the first domain 531 and the fourth domain 534 in which the areas Sb1 and Sb4 of the exclusion region are large are shielded from a relatively wide range by the Cs electrode unit 14, and the second domain 532 in which the areas Sb2 and Sb3 of the exclusion region are small. In addition, each of the third domains 533 is shielded from light in a relatively narrow range by the Cs electrode unit 14. Therefore, the first domain 531 and the fourth domain 534 shown in FIG. 3 each have a light-transmitting region narrower than the first domain 531 and the fourth domain 534 shown in FIG. 4, and the second domain 532 shown in FIG. Each of the third domains 533 has a wider light-transmitting region than each of the second domain 532 and the fourth domain 534 shown in FIG.
　従って、上側の画素領域５１ｒに係る第１ドメイン５３１～第４ドメイン５３４夫々の透光領域の面積Ｓa1～Ｓa4は、Ｓa1≒Ｓa2≒Ｓa3≒Ｓa4という関係を有する。即ち、透光領域の面積Ｓa1～Ｓa4は略均等である。
　ここで、透光領域の面積Ｓa1～Ｓa4の均等さとは、透光領域の面積Ｓa1～Ｓa4同士の面積の差が視野角特性に悪影響を及ぼさない程度の均等さである。 Accordingly, the areas Sa1 to Sa4 of the first domain 531 to the fourth domain 534 related to the upper pixel region 51r have a relationship of Sa1≈Sa2≈Sa3≈Sa4. That is, the areas Sa1 to Sa4 of the light transmitting region are substantially equal.
Here, the uniformity of the areas Sa1 to Sa4 of the light-transmitting regions is equal to the extent that the difference in area between the areas Sa1 to Sa4 of the light-transmitting regions does not adversely affect the viewing angle characteristics.
　図２に示すように、上側の画素領域５１ｇ（又は下側の画素領域５１ｒ）の場合、第１ドメイン５３１～第４ドメイン５３４夫々の除外領域の面積Ｓb1～Ｓb4は、Ｓb1≒Ｓb4＜Ｓb2≒Ｓb3という関係を有する。即ち、除外領域の面積Ｓb1～Ｓb4は不均等である。 As shown in FIG. 2, in the case of the upper pixel region 51g (or the lower pixel region 51r), the areas Sb1 to Sb4 of the first domain 531 to the fourth domain 534 are Sb1≈Sb4 <Sb2≈ It has a relationship of Sb3. That is, the areas Sb1 to Sb4 of the excluded regions are unequal.
　故に、液晶パネル４１を設計する場合、上側の画素領域５１ｇ（又は下側の画素領域５１ｒ）に係るＣｓ電極部１４は、従来の配置位置よりも下側に配置される。いわば、Ｃｓ電極部１４の配置位置は従来よりも下側にシフトしている。
　このため、除外領域の面積Ｓb1，Ｓb4が小さい第１ドメイン５３１及び第４ドメイン５３４夫々は、Ｃｓ電極部１４によって比較的狭い範囲を遮光され、除外領域の面積Ｓb2，Ｓb3が大きい第２ドメイン５３２及び第３ドメイン５３３夫々は、Ｃｓ電極部１４によって比較的広い範囲を遮光される。
　この結果、上側の画素領域５１ｇ（又は下側の画素領域５１ｒ）に係る第１ドメイン５３１～第４ドメイン５３４夫々の透光領域の面積Ｓa1～Ｓa4は、Ｓa1≒Ｓa2≒Ｓa3≒Ｓa4という関係を有する。即ち、透光領域の面積Ｓa1～Ｓa4は略均等である。 Therefore, when designing the liquid crystal panel 41, the Cs electrode portion 14 related to the upper pixel region 51g (or the lower pixel region 51r) is disposed below the conventional arrangement position. In other words, the arrangement position of the Cs electrode portion 14 is shifted downward as compared with the conventional case.
For this reason, the first domain 531 and the fourth domain 534 each having a small area Sb1 and Sb4 of the excluded region are shielded from a relatively narrow range by the Cs electrode unit 14, and the second domain 532 having a large area Sb2 and Sb3 of the excluded region. In addition, each of the third domains 533 is shielded from light in a relatively wide range by the Cs electrode portion 14.
As a result, the areas Sa1 to Sa4 of the first domain 531 to the fourth domain 534 relating to the upper pixel area 51g (or the lower pixel area 51r) have the relationship of Sa1≈Sa2≈Sa3≈Sa4. Have. That is, the areas Sa1 to Sa4 of the light transmitting region are substantially equal.
　以上のように、液晶パネル４１は、画素領域５１毎に除外領域の面積Ｓb1～Ｓb4の不均等さが異なる（上側の画素領域５１ｒにおいてはＳb1≒Ｓb4＜Ｓb2≒Ｓb3だが、上側の画素領域５１ｇ及び下側の画素領域５１ｒ夫々においてはＳb1≒Ｓb4＞Ｓb2≒Ｓb3である）ことがある。
　従来のようにＣｓ電極部１４を配置位置を設計していては、透光領域の面積Ｓa1～Ｓa4は不均等さは解消されない。仮に、一の画素領域５１に係るＣｓ電極部１４の配置位置を他の画素領域５１にも適用した場合（例えば全てのＣｓ電極部１４の配置位置を従来よりも上側にシフトさせた場合）でも、透光領域の面積Ｓa1～Ｓa4は不均等さは解消されない。 As described above, in the liquid crystal panel 41, the non-uniformity of the areas Sb1 to Sb4 of the excluded regions differs for each pixel region 51 (Sb1≈Sb4 <Sb2≈Sb3 in the upper pixel region 51r, but the upper pixel region 51g And Sb1≈Sb4> Sb2≈Sb3 in each of the lower pixel regions 51r).
If the arrangement position of the Cs electrode portion 14 is designed as in the prior art, the non-uniformity of the areas Sa1 to Sa4 of the translucent region cannot be eliminated. Even if the arrangement positions of the Cs electrode portions 14 related to one pixel area 51 are applied to the other pixel areas 51 (for example, the arrangement positions of all the Cs electrode sections 14 are shifted to the upper side compared to the conventional case). The unevenness of the areas Sa1 to Sa4 of the light transmitting region is not eliminated.
　しかしながら、本実施の形態に係る液晶パネル４１では、画素領域５１毎に、Ｃｓ電極部１４の配置位置が、透光領域の面積Ｓa1～Ｓa4が均等になるよう設計される。このため、何れの画素領域５１においても、透光領域の面積Ｓa1～Ｓa4同士の面積の差が視野角特性に悪影響を及ぼすことが抑制される。 However, in the liquid crystal panel 41 according to the present embodiment, the arrangement positions of the Cs electrode portions 14 are designed so that the areas Sa1 to Sa4 of the light-transmitting regions are equal for each pixel region 51. For this reason, in any pixel region 51, the difference in area between the areas Sa1 to Sa4 of the light transmitting region is suppressed from adversely affecting the viewing angle characteristics.
　ところで、Ｃｓ電極部１４は、前後方向に対向配置された２個の電極部を有するコンデンサである。 By the way, the Cs electrode part 14 is a capacitor having two electrode parts arranged opposite to each other in the front-rear direction.
　次に、液晶表示装置４におけるカラー画像の表示について説明する。
　バックライトユニット４２は、液晶パネル４１を後ろ側（背面側）から照明する。
　バックライトユニット４２が発した光は、拡散板３１を透過することによって拡散する。拡散した光は、偏光板３２を透過してからＴＦＴ基板１に入射する。
　ＴＦＴ基板１に入射した光は、ガラス基板１１、画素電極、及び配向膜１３を順に透過してから、液晶３３に入射する。
　ＴＦＴ層１２の各画素電極と透明電極部２４との間に電圧が印加されていない場合、液晶３３に入射した光は、そのまま液晶３３を透過する。一方、ＴＦＴ層１２の各画素電極と透明電極部２４との間に電圧が印加されることによって液晶３３に電圧が印加された場合、液晶３３を構成する液晶分子の配列が変化するため、液晶３３に入射した光は、液晶３３によって偏光されてから液晶３３を透過する。 Next, display of a color image in the liquid crystal display device 4 will be described.
The backlight unit 42 illuminates the liquid crystal panel 41 from the rear side (back side).
The light emitted from the backlight unit 42 is diffused by passing through the diffusion plate 31. The diffused light passes through the polarizing plate 32 and then enters the TFT substrate 1.
The light incident on the TFT substrate 1 passes through the glass substrate 11, the pixel electrode, and the alignment film 13 in order, and then enters the liquid crystal 33.
When no voltage is applied between each pixel electrode of the TFT layer 12 and the transparent electrode portion 24, the light incident on the liquid crystal 33 passes through the liquid crystal 33 as it is. On the other hand, when a voltage is applied to the liquid crystal 33 by applying a voltage between each pixel electrode of the TFT layer 12 and the transparent electrode portion 24, the arrangement of the liquid crystal molecules constituting the liquid crystal 33 changes. The light incident on 33 is polarized by the liquid crystal 33 and then passes through the liquid crystal 33.
　液晶３３を透過した光は、カラーフィルタ２に入射する。
　カラーフィルタ２に入射した光は、配向膜２５、透明電極部２４、開口２６，２６，…を閉塞しているＲＧＢ層２３，２３，…、及びガラス基板２１を順に透過してから出射する。
　液晶３３をそのまま透過した光は、カラーフィルタ２から出射した後、偏光板３４によって遮断される。液晶３３によって偏光された光は、カラーフィルタ２から出射した後、偏光板３４、及び保護ガラス３５を順に透過し、外部へ出射する。
　以上の結果、液晶パネル４１の表示領域にカラー画像が表示される。 The light transmitted through the liquid crystal 33 enters the color filter 2.
The light incident on the color filter 2 passes through the alignment film 25, the transparent electrode portion 24, the RGB layers 23, 23,... Closing the openings 26, 26,.
The light transmitted through the liquid crystal 33 as it is is emitted from the color filter 2 and then blocked by the polarizing plate 34. The light polarized by the liquid crystal 33 is emitted from the color filter 2, then sequentially passes through the polarizing plate 34 and the protective glass 35, and is emitted to the outside.
As a result, a color image is displayed in the display area of the liquid crystal panel 41.
　以上のような液晶表示装置４は、液晶パネル４１がマルチ画素を備える上に配向分割がなされている。しかも、各画素領域５１における第１ドメイン５３１～第４ドメイン５３４夫々の透光領域の面積Ｓa1～Ｓa4が略均等である。このため、マルチ画素ではない場合、配向分割がなされていない場合、又は透光領域の面積Ｓa1～Ｓa4が不均等である場合よりも視野角特性が向上されている。 In the liquid crystal display device 4 as described above, the liquid crystal panel 41 includes multi-pixels and the alignment is divided. Moreover, the areas Sa1 to Sa4 of the first domain 531 to the fourth domain 534 in each pixel region 51 are substantially equal. For this reason, the viewing angle characteristics are improved compared to the case where the pixel is not a multi-pixel, the alignment is not divided, or the areas Sa1 to Sa4 of the light-transmitting regions are not uniform.
　本実施の形態では、全ての画素領域５１，５１，…について、透光領域の面積Ｓa1～Ｓa4が略均等にされているが、これに限定されるものではない。例えば、副画素の内、暗画素となすべき副画素の画素領域５１，５１，…については、透光領域の面積Ｓa1～Ｓa4が不均等であってもよい。また、副画素の個数は２個に限定されない。更に、ドメインの個数は４個に限定されない。 In the present embodiment, the areas Sa1 to Sa4 of the light-transmitting regions are substantially equal for all the pixel regions 51, 51,..., But are not limited to this. For example, among the subpixels 51, 51,... Of the subpixels to be dark pixels, the areas Sa1 to Sa4 of the translucent regions may be uneven. Further, the number of subpixels is not limited to two. Furthermore, the number of domains is not limited to four.
　本実施の形態では、液晶パネル４１がマルチ画素を備える場合を例示しているが、これに限定されず、液晶パネル４１がマルチ画素ではない通常の画素を備えていてもよい。
　また、本実施の形態では、マルチ画素の１個の副画素と開口２６とが対応している場合を例示しているが、これに限定されるものではない。例えば、１個の副画素と１個の開口が複数個に分割されてなる一部分とが対応する構成でもよい。この場合、１個の開口における複数個の副画素に係る画素領域同士の境界は、例えば透明電極に設けられたギャップによって設定される。 In the present embodiment, the case where the liquid crystal panel 41 includes multi-pixels is illustrated, but the present invention is not limited to this, and the liquid crystal panel 41 may include normal pixels that are not multi-pixels.
In this embodiment, the case where one subpixel of the multi-pixel and the opening 26 correspond to each other is illustrated, but the present invention is not limited to this. For example, a configuration in which one subpixel and a portion obtained by dividing one opening into a plurality of portions may correspond to each other. In this case, boundaries between pixel regions related to a plurality of subpixels in one opening are set by a gap provided in the transparent electrode, for example.
　本実施の形態では、液晶表示装置４の設計者が、暗線５４１，５４２の配置位置と、Ｃｓ電極部１４の形状、面積、及び／又は配置位置とを調整することによって、透光領域の面積Ｓa1～Ｓa4を略均等にしている。何故ならば、暗線５４１，５４２の配置位置、並びに、Ｃｓ電極部１４の形状及び配置位置等は、画素領域５１を構成する他部に比べて設計の自由度が高いからである。
　暗線５４１，５４２の配置位置を調整することによって、透光領域の面積Ｓa1～Ｓa4を略均等にする試みは、従来なされている。しかしながら、暗線５４１，５４２の配置位置を調整するだけでは、視野角特性に悪影響を及ぼさない程度の均等さにすることができない場合がある。 In the present embodiment, the designer of the liquid crystal display device 4 adjusts the arrangement position of the dark lines 541 and 542 and the shape, area, and / or arrangement position of the Cs electrode portion 14 to thereby adjust the area of the light transmitting region. Sa1 to Sa4 are made substantially equal. This is because the arrangement positions of the dark lines 541 and 542 and the shape and arrangement position of the Cs electrode portion 14 have a higher degree of design freedom than the other parts constituting the pixel region 51.
Attempts have been made to make the areas Sa1 to Sa4 of the light-transmitting regions substantially equal by adjusting the arrangement positions of the dark lines 541 and 542. However, it may not be possible to equalize to the extent that the viewing angle characteristics are not adversely affected only by adjusting the arrangement positions of the dark lines 541 and 542.
　そこで、本発明の実施の形態では、設計者が、Ｃｓ電極部１４の形状及び／又は配置位置等を更に調整する。Ｃｓ電極部１４の形状及び／又は配置位置等を調整することは容易であり、視野角特性を向上させるためにＣｓ電極部１４の形状及び／又は配置位置等を調整しても、視野角特性以外の特性が悪化する可能性は低い。また、Ｃｓ電極部１４は従来存在する部材である。即ち、透光領域の面積Ｓa1～Ｓa4を略均等にするためだけに、新たな遮光性部材を追加する必要がない。 Therefore, in the embodiment of the present invention, the designer further adjusts the shape and / or arrangement position of the Cs electrode portion 14. It is easy to adjust the shape and / or arrangement position of the Cs electrode part 14, and even if the shape and / or arrangement position of the Cs electrode part 14 is adjusted in order to improve the viewing angle characteristic, the viewing angle characteristic is obtained. It is unlikely that other characteristics will deteriorate. The Cs electrode portion 14 is a member that exists in the past. That is, it is not necessary to add a new light-shielding member only to make the areas Sa1 to Sa4 of the light-transmitting regions substantially equal.
　ところで、透光領域の面積Ｓa1～Ｓa4を略均等にする他の手法としては、Ｃｓ電極部１４以外の遮光性部材の形状及び／又は配置位置等を調整すること、並びに、画素領域５１自体の形状を調整すること等が考えられる。しかしながら、これらは何れも煩雑である。しかも、視野角特性は向上されたとしても、視野角特性以外の特性は悪化する虞がある。 By the way, as another method for making the areas Sa1 to Sa4 of the translucent regions substantially equal, adjusting the shape and / or arrangement position of the light-shielding member other than the Cs electrode portion 14 and the pixel region 51 itself. It is conceivable to adjust the shape. However, these are all complicated. Moreover, even if the viewing angle characteristics are improved, characteristics other than the viewing angle characteristics may be deteriorated.
実施の形態　２．
　図５は、本発明の実施の形態２に係る液晶表示装置４が備える液晶パネル４１の構成を模式的に示す平面図である。図５は図２に対応する。ただし、図５には第１Ｃｓ配線部１５１及びゲート配線部１７の図示は省略してある。
　本実施の形態の液晶表示装置４は、実施の形態１の液晶表示装置４と略同様の構成である。以下では、実施の形態１との差異について説明し、その他、実施の形態１に対応する部分には同一符号を付してそれらの説明を省略する。 Embodiment 2. FIG.
FIG. 5 is a plan view schematically showing the configuration of the liquid crystal panel 41 provided in the liquid crystal display device 4 according to Embodiment 2 of the present invention. FIG. 5 corresponds to FIG. However, the first Cs wiring portion 151 and the gate wiring portion 17 are not shown in FIG.
The liquid crystal display device 4 of the present embodiment has substantially the same configuration as the liquid crystal display device 4 of the first embodiment. Hereinafter, differences from the first embodiment will be described, and other parts corresponding to those of the first embodiment are denoted by the same reference numerals and description thereof will be omitted.
　実施の形態１の各ソース配線部１６は上下方向に直線状であり、左右方向に隣り合う画素領域５１，５１間の非画素領域５２に配されている。
　一方、本実施の形態の各ソース配線部１６は、中途で屈曲しており、左側の画素領域５１の第３ドメイン５３３と右側の画素領域５１の第１ドメイン５３１とに亘って配されている。
　この理由は、画素領域５１におけるＴＦＴのドレイン電極及びソース配線部１６，１６間の容量と、画素領域５１に左右方向に隣り合う画素領域５１，５１夫々におけるＴＦＴのドレイン電極及びソース配線部１６，１６間の容量とを一致させるためである。 Each source wiring portion 16 of the first embodiment is linear in the vertical direction and is arranged in the non-pixel area 52 between the pixel areas 51 and 51 adjacent in the horizontal direction.
On the other hand, each source wiring portion 16 of the present embodiment is bent halfway, and is arranged across the third domain 533 of the left pixel region 51 and the first domain 531 of the right pixel region 51. .
This is because the capacitance between the drain electrode and source wiring portions 16 and 16 of the TFT in the pixel region 51 and the drain electrode and source wiring portion 16 of the TFT in the pixel regions 51 and 51 adjacent to the pixel region 51 in the left-right direction. This is because the capacities between the 16 are matched.
　図５に示す第１ドメイン５３１～第４ドメイン５３４夫々の除外領域の面積Ｓb1～Ｓb4は、Ｓb2＞Ｓb4＞Ｓb3＞Ｓb1という関係を有する。即ち、除外領域の面積Ｓb1～Ｓb4は不均等である。
　そこで、画素領域５１には、実施の形態１のＣｓ電極部１４に替えて、Ｃｓ電極部１４１が配されている。Ｃｓ電極部１４１の配置位置は、完全な矩形のＣｓ電極部が、図心と暗線５４１，５４２の交差点とが一致するように配置される場合に比べて、下側にシフトしている。更に、Ｃｓ電極部１４１は、完全な矩形のＣｓ電極部に係る暗線５４２よりも上側の部分が右側にシフトし、暗線５４２よりも下側の部分が左側にシフトしたかのような形状になしてある。 The areas Sb1 to Sb4 of the excluded regions of the first domain 531 to the fourth domain 534 shown in FIG. 5 have a relationship of Sb2>Sb4>Sb3> Sb1. That is, the areas Sb1 to Sb4 of the excluded regions are unequal.
Therefore, a Cs electrode unit 141 is arranged in the pixel region 51 instead of the Cs electrode unit 14 of the first embodiment. The arrangement position of the Cs electrode portion 141 is shifted downward as compared with the case where the complete rectangular Cs electrode portion is arranged so that the centroid and the intersections of the dark lines 541 and 542 coincide with each other. Further, the Cs electrode portion 141 has a shape as if the portion above the dark line 542 related to the complete rectangular Cs electrode portion is shifted to the right side and the portion below the dark line 542 is shifted to the left side. It is.
　このため、除外領域の面積が大きいドメインほどＣｓ電極部１４１によって広い範囲を遮光される。従って、第１ドメイン５３１～第４ドメイン５３４夫々の透光領域の面積Ｓa1～Ｓa4は、Ｓa1≒Ｓa2≒Ｓa3≒Ｓa4という関係を有する。即ち、透光領域の面積Ｓa1～Ｓa4は略均等である。
　以上のような液晶表示装置４は、実施の形態１の液晶表示装置４と同様に、視野角特性が向上されている。 For this reason, a domain with a larger area of the exclusion region is shielded from a wider area by the Cs electrode portion 141. Accordingly, the areas Sa1 to Sa4 of the light transmission regions of the first domain 531 to the fourth domain 534 have a relationship of Sa1≈Sa2≈Sa3≈Sa4. That is, the areas Sa1 to Sa4 of the light transmitting region are substantially equal.
The liquid crystal display device 4 as described above has improved viewing angle characteristics like the liquid crystal display device 4 of the first embodiment.
　今回開示された実施の形態は、全ての点で例示であって、制限的なものではないと考えられるべきである。本発明の範囲は、上述した意味ではなく、請求の範囲と均等の意味及び請求の範囲内での全ての変更が含まれることが意図される。
　また、本発明の効果がある限りにおいて、液晶表示装置４又は液晶パネル４１に、実施の形態１，２に開示されていない構成要素が含まれていてもよい。
　各実施の形態に開示されている構成要件（技術的特徴）はお互いに組み合わせ可能であり、組み合わせによって新しい技術的特徴を形成することができる。 The embodiment disclosed this time is to be considered as illustrative in all points and not restrictive. The scope of the present invention is not intended to include the above-described meaning, but is intended to include meanings equivalent to the scope of the claims and all modifications within the scope of the claims.
In addition, as long as the effects of the present invention are obtained, the liquid crystal display device 4 or the liquid crystal panel 41 may include components that are not disclosed in the first and second embodiments.
The constituent elements (technical features) disclosed in each embodiment can be combined with each other, and a new technical feature can be formed by the combination.
　１４，１４１　Ｃｓ電極部（遮光性部材，一の遮光性部材，補助容量電極）
　１５２　第２Ｃｓ配線部（遮光性部材）
　１５３　第３Ｃｓ配線部（遮光性部材）
　１５４　第４Ｃｓ配線部（遮光性部材）
　１５５　第５Ｃｓ配線部（遮光性部材）
　１６　ソース配線部（遮光性部材）
　１７　ゲート配線部（遮光性部材）
　１８　ドレイン配線部（遮光性部材）
　２３　ＲＧＢ層（着色層）
　４　　液晶表示装置
　４１　液晶パネル
　４２　バックライトユニット（照明装置）
　５１　画素領域
　５３１　第１ドメイン（ドメイン）
　５３２　第２ドメイン（ドメイン）
　５３３　第３ドメイン（ドメイン）
　５３４　第４ドメイン（ドメイン） 14,141 Cs electrode portion (light shielding member, one light shielding member, auxiliary capacitance electrode)
152 2nd Cs wiring part (light shielding member)
153 3rd Cs wiring part (light shielding member)
154 4th Cs wiring part (light shielding member)
155 5th Cs wiring part (light-shielding member)
16 Source wiring part (light-shielding member)
17 Gate wiring part (light-shielding member)
18 Drain wiring part (light shielding member)
23 RGB layer (colored layer)
4 Liquid crystal display device 41 Liquid crystal panel 42 Backlight unit (illumination device)
51 pixel region 531 first domain (domain)
532 Second Domain (Domain)
533 Third Domain (Domain)
534 4th domain (domain)

Claims (4)

  1. 　液晶の配向方向が互いに異なる複数個のドメインを有する画素領域と、
    　該画素領域に配されている遮光性部材と
    　を備える液晶パネルにおいて、
    　一の遮光性部材は、該一の遮光性部材以外の遮光性部材によって遮光される領域を除く除外領域の面積が大きいドメインに対して広い範囲を遮光し、前記除外領域の面積が小さいドメインに対して狭い範囲を遮光するように配されていることを特徴とする液晶パネル。     A pixel region having a plurality of domains in which liquid crystal alignment directions are different from each other;
    In a liquid crystal panel comprising a light shielding member disposed in the pixel region,
    The one light-shielding member shields a wide range from a domain having a large area of the exclusion region excluding a region shielded by a light-shielding member other than the one light-shielding member, and the domain of the exclusion region is small. On the other hand, the liquid crystal panel is arranged so as to shield a narrow area from light.
  2. 　前記一の遮光性部材は補助容量電極であることを特徴とする請求項１に記載の液晶パネル。 2. The liquid crystal panel according to claim 1, wherein the one light shielding member is an auxiliary capacitance electrode.
  3. 　少なくとも２個の前記画素領域には、互いに異なる色の着色層が配されており、
    　一の色の着色層が配されている画素領域においては、一のドメインの除外領域の面積が他のドメインの除外領域の面積よりも大きく、
    　他の色の着色層が配されている画素領域においては、前記一のドメインに対応するドメインの除外領域の面積が、前記他のドメインに対応するドメインの除外領域の面積よりも小さいことを特徴とする請求項１又は２に記載の液晶パネル。     At least two of the pixel regions are provided with colored layers of different colors,
    In the pixel region where the colored layer of one color is arranged, the area of the exclusion region of one domain is larger than the area of the exclusion region of the other domain,
    In a pixel region in which a colored layer of another color is arranged, the area of the excluded region of the domain corresponding to the one domain is smaller than the area of the excluded region of the domain corresponding to the other domain The liquid crystal panel according to claim 1 or 2.
  4. 　請求項１乃至３の何れか一項に記載の液晶パネルと、
    　該液晶パネルを背面側から照明する照明装置と
    　を備えることを特徴とする液晶表示装置。     A liquid crystal panel according to any one of claims 1 to 3,
    An illuminating device that illuminates the liquid crystal panel from the back side.
PCT/JP2014/083882 2014-01-27 2014-12-22 Liquid crystal panel and liquid crystal display device WO2015111343A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009109767A (en) * 2007-10-30 2009-05-21 Sharp Corp Liquid crystal display device
WO2009130908A1 (en) * 2008-04-25 2009-10-29 シャープ株式会社 Liquid crystal display device
WO2012093621A1 (en) * 2011-01-06 2012-07-12 シャープ株式会社 Liquid-crystal display device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009109767A (en) * 2007-10-30 2009-05-21 Sharp Corp Liquid crystal display device
WO2009130908A1 (en) * 2008-04-25 2009-10-29 シャープ株式会社 Liquid crystal display device
WO2012093621A1 (en) * 2011-01-06 2012-07-12 シャープ株式会社 Liquid-crystal display device

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