WO2011155272A1 - Procédé pour fabriquer un dispositif d'affichage à cristaux liquides, et dispositif d'affichage à cristaux liquides - Google Patents

Procédé pour fabriquer un dispositif d'affichage à cristaux liquides, et dispositif d'affichage à cristaux liquides Download PDF

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WO2011155272A1
WO2011155272A1 PCT/JP2011/059960 JP2011059960W WO2011155272A1 WO 2011155272 A1 WO2011155272 A1 WO 2011155272A1 JP 2011059960 W JP2011059960 W JP 2011059960W WO 2011155272 A1 WO2011155272 A1 WO 2011155272A1
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liquid crystal
exposure
region
display device
crystal display
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PCT/JP2011/059960
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English (en)
Japanese (ja)
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茂樹 田中
誠 神戸
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シャープ株式会社
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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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/13378—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation
    • G02F1/133788—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation by light irradiation, e.g. linearly polarised light photo-polymerisation
    • 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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133753—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle

Definitions

  • the present invention relates to a method for manufacturing a liquid crystal display device and a liquid crystal display device. More specifically, the present invention relates to a method for manufacturing a liquid crystal display device that performs alignment division by photo-alignment processing, and a liquid crystal display device that includes a photo-alignment film.
  • the liquid crystal display device is a display device that can be reduced in weight, thickness, and power consumption, it is widely used for televisions, monitors for personal computers, monitors for portable terminals, and the like.
  • a liquid crystal display device usually controls the transmittance of light transmitted through a liquid crystal layer according to the inclination angle of liquid crystal molecules that changes in accordance with a voltage applied in the liquid crystal layer between a pair of substrates. Since liquid crystal molecules cause birefringence of light, the transmittance has an angle dependency due to the difference in the tilt of the liquid crystal molecules, and depending on the viewing angle direction, there are display defects such as a decrease in contrast and gradation inversion that occurs during halftone display. It sometimes occurred. Therefore, the conventional liquid crystal display device has room for improvement in viewing angle characteristics.
  • each pixel or subpixel is divided into two or more regions having different inclination directions of liquid crystal molecules in the liquid crystal layer.
  • this technique when a voltage is applied to the liquid crystal layer, the liquid crystal molecules are inclined in different directions for each of the alignment-divided regions in one sub-pixel, so that the viewing angle characteristics are improved. Can be improved.
  • Each region of the liquid crystal layer in which liquid crystal molecules having different tilt directions exist is also called a domain, and alignment division is also called a multi-domain.
  • the vertical alignment mode includes a multi-domain vertical alignment (MVA) mode, a PVA (patterned vertical alignment) mode, a multi-domain VAECB (vertical alignment ECB) mode, and the like.
  • MVA multi-domain vertical alignment
  • PVA patterned vertical alignment
  • VAECB vertical alignment ECB
  • Examples of the alignment treatment for performing alignment division include a rubbing method and a photo-alignment method.
  • the rubbing method is a method of performing an alignment process by rubbing the surface of the alignment film with a cloth wound around a roller.
  • dust such as cloth hairs, scraped pieces, etc. may be generated, or defects such as destruction of the switching element, characteristic shift, and deterioration due to static electricity may occur.
  • the photo-alignment method uses a photo-alignment film as the alignment film material, and irradiates (exposures) light such as ultraviolet rays to the photo-alignment film, thereby generating an alignment regulating force in the alignment film and / or
  • This is an alignment method for changing the alignment regulating direction of. Therefore, the photo-alignment method can perform the alignment treatment of the alignment film in a non-contact manner, and can suppress the occurrence of dirt, dust, etc. during the alignment treatment. Further, by using a photomask at the time of exposure, light irradiation can be performed on a desired region in the alignment film surface under different conditions, so that a domain having a desired design can be easily formed.
  • Patent Document 1 The alignment division processing by the photo-alignment method is described in Patent Document 1 and Patent Document 2, for example.
  • Patent Document 1 it is divided into stripe-shaped regions, and the orientation direction of liquid crystal molecules in a certain region is opposite to the orientation direction in a region adjacent to the region, and an orientation process parallel to the stripe is performed.
  • a method is disclosed.
  • patent document 2 in order to suppress that a seam generate
  • a method of using a halftone portion in an exposure area to be disclosed is disclosed.
  • FIG. 3 is a schematic plan view showing a state when the alignment film is exposed through the photomask.
  • FIG. 4 is a schematic diagram showing a state in which a subpixel is divided into a plurality of domains by a conventional exposure method.
  • a photomask 51 having a width about half the subpixel pitch is prepared, and the photomask 51 or the substrate 52 to be exposed is arranged in one direction. Exposure is performed by scanning.
  • the photomask 51 has a plurality of slit-like light transmitting portions, and light emitted from the light source passes through the light transmitting portions of the photomask 51 and is irradiated to the alignment film.
  • the exposed region becomes a region subjected to the photo-alignment treatment, and an alignment regulating force is applied to the liquid crystal molecules.
  • the scanning exposure can be performed using, for example, a scanning exposure machine.
  • Each of the sub-pixels corresponds to one color, and for example, one pixel is formed by combining three of red, green, and blue.
  • first exposure is performed on a half region of the sub-pixel.
  • the arrows in FIG. 4 indicate the exposure direction (direction in which light is irradiated).
  • the dotted line in FIG. 4 indicates the outer edge of the photomask, and the horizontal width of the photomask substantially coincides with half the horizontal width (pitch width) of the sub-pixel.
  • the exposure range is shifted by a half pitch, and the second exposure having an exposure direction opposite to the exposure direction in the first exposure is performed on the remaining area of the sub-pixel.
  • FIG. 5 is a schematic diagram showing a state of alignment division when the position of the photomask causes misalignment.
  • the first area the area exposed by the first exposure
  • the second exposure the area exposed by the second exposure.
  • Such misalignment in alignment division also occurs in adjacent subpixels, and the area of the first region is smaller than the area of the second region in all the subpixels arranged in a row.
  • the joint area between them is visually recognized as unevenness. For example, when mask joining is performed, the photomask at only one place is displaced, so that unevenness occurs between the photomask that is not displaced. In addition, when unevenness occurs in the entire panel, display characteristics such as viewing angle characteristics are affected.
  • the present invention has been made in view of the above situation, and an object of the present invention is to provide a method of manufacturing a liquid crystal display device in which display unevenness is unlikely to occur even when alignment deviation of a photomask occurs during alignment division. Is.
  • the inventors of the present invention have studied various methods for performing exposure so that the balance of the ratio of orientation divisions is not lost, and one subpixel or a region where the first exposure is performed in the pixel (first region); Attention was paid to the positional relationship with the second exposure area (second area).
  • first region and the second region are all formed in the same pattern, the area of the region where the alignment is divided in each subpixel or pixel is as follows. I found out that it was biased in one direction.
  • the present inventors have conducted intensive studies and found that the positional relationship between the first region and the second region is not the same in all subpixels or pixels, but in subpixel units or pixel units. Even if a photomask misalignment occurs by exchanging the positional relationship between the first region and the second region, the first region and the second region can be obtained in terms of the adjacent sub-pixel unit or pixel unit. And found that the area ratio was made uniform.
  • FIG. 1 is a schematic diagram showing how a subpixel is divided into a plurality of domains by the exposure method of the present invention.
  • a photomask having a width about half the subpixel pitch is prepared, and the first exposure is performed on the half of the subpixel area.
  • the areas corresponding to each other between adjacent sub-pixels are not irradiated, and the first exposure is performed on each different area.
  • FIG. 1 as an example, in the first exposure, the left half region of the left sub-pixel and the right half region of the right sub-pixel are exposed.
  • the exposure range is shifted by a half pitch, and the second exposure having an exposure direction opposite to the exposure direction in the first exposure is performed on the remaining area of the sub-pixel.
  • the second exposure the right half region of the left sub-pixel and the left half region of the right sub-pixel are exposed.
  • FIG. 2 is a schematic diagram showing the state of alignment division when the position of the photomask is misaligned when exposure is performed using the present invention.
  • the area ratio of the first region is different from that of the second region in terms of subpixel units, but the area of the first region is considered in terms of the entire two adjacent subpixels. And there is no significant difference between the area of the second region. This is the same when an alignment misalignment occurs in the left direction and when an misalignment occurs in the right direction. Further, this relationship is not a trade-off relationship in which the area ratio is shifted when no alignment shift occurs.
  • the repetition in units of sub-pixels has been described, but the same can be said for the repetition in units of pixels.
  • one aspect of the present invention includes a pair of substrates each having an alignment film on the surface on the liquid crystal layer side, and a liquid crystal layer provided between the pair of substrates, and is provided by a single or a plurality of subpixels.
  • a method of manufacturing a liquid crystal display device including one pixel wherein the manufacturing method irradiates light on a surface of an alignment film of one of the pair of substrates through a photomask, and the alignment film Including an exposure step of dividing the region corresponding to one subpixel into n regions (n represents an integer of 2 or more) each having a different orientation direction, and the position of the n regions
  • the relationship is a method of manufacturing a liquid crystal display device that is switched in units of sub-pixels or in units of pixels with any one of the boundary lines of the n regions as an axis.
  • the method for producing a liquid crystal display device of the present invention is not particularly limited by other steps as long as such steps are essential.
  • the liquid crystal display device manufactured by the manufacturing method of the present invention includes a pair of substrates each having an alignment film on the surface on the liquid crystal layer side, and a liquid crystal layer provided between the pair of substrates, and is single or plural.
  • One pixel is constituted by the sub-pixels.
  • the cell gap (the thickness of the liquid crystal layer) is kept constant by columnar spacers.
  • the color of the sub-pixel can be realized by, for example, a color filter arranged corresponding to each sub-pixel, and various display colors can be expressed in units of pixels by adjusting the balance of each color.
  • Each of the pair of substrates has an alignment film and can define the alignment direction of adjacent liquid crystal molecules. In the manufacturing method of the present invention, as will be described later, the characteristics of the alignment film are determined by the photo-alignment treatment.
  • n is preferably an even number of 2 or more.
  • the positional relationship of the n areas is switched in units of the sub-pixels or the pixels with the boundary line of the n areas as an axis.
  • the positions of the exposure regions are not changed to the same pattern for each subpixel or pixel, but are replaced in units of subpixels or in units of pixels.
  • the area ratios of the regions subjected to orientation division are made uniform as a whole, and the disturbance of the area ratio due to misalignment is compensated.
  • the liquid crystal display device thus obtained can prevent display unevenness due to viewing angle dependence at mask joints and shot joints due to exposure position shifts, and obtain uniform display characteristics with a wide viewing angle. it can.
  • the exposure step includes a first exposure and a second exposure, each having a different exposure direction, and a width of a photomask used for the first exposure and a width of a photomask used for the second exposure.
  • a width of a photomask used for the first exposure and a width of a photomask used for the second exposure are preferably substantially the same.
  • the exposure direction in the first exposure and the exposure direction in the second exposure are preferably opposite to each other.
  • the viewing angle characteristics can be improved in a well-balanced manner because the orientation directions given to the liquid crystal molecules by the regions divided in orientation are opposite to each other.
  • light is irradiated to the surface of the alignment film of the other substrate of the pair of substrates through a photomask, and the regions corresponding to one subpixel of the alignment film have different alignment orientations. It is preferable to include an exposure step of dividing the region into m (m represents an integer of 2 or more). In particular, when the exposure direction in the first exposure and the exposure direction in the second exposure are opposite to each other, light is transmitted through the photomask to the surface of the alignment film of the other substrate.
  • the third exposure having an exposure direction in a direction orthogonal to the exposure directions of the first and second exposures, and a region different from the region where the third exposure is performed, And a fourth exposure having an exposure direction opposite to the exposure direction of the third exposure.
  • the width of the photomask used for the third exposure and the width of the photomask used for the fourth exposure are substantially the same.
  • the widths of the regions to be divided can be easily equalized.
  • the positional relationship of the m regions is switched in units of the sub-pixels or the pixels with the boundary line of the m regions as an axis.
  • the area of the region where each alignment division is made in terms of sub-pixel units or pixel units The ratio is made uniform as a whole, and the disturbance of the area ratio of the exposure region is compensated.
  • the liquid crystal display device thus obtained is less likely to cause display unevenness due to viewing angle dependency.
  • Another aspect of the present invention includes a pair of substrates each having an alignment film on the surface on the liquid crystal layer side, and a liquid crystal layer provided between the pair of substrates, and includes one or more subpixels.
  • the alignment film on one of the pair of substrates is different from the liquid crystal molecules adjacent to the alignment film in a region corresponding to one subpixel. It has n regions (n represents an integer of 2 or more) that give orientation orientation, and the positional relationship of the n regions is based on any of the boundary lines of the n regions as an axis. It is also a liquid crystal display device that is switched in units of sub-pixels or in units of pixels.
  • the liquid crystal display device of the present invention includes a pair of substrates each having an alignment film on the surface on the liquid crystal layer side, and a liquid crystal layer provided between the pair of substrates, and includes one or a plurality of sub-pixels. A pixel is constructed.
  • the alignment film of one of the pair of substrates has n (n is 2 or more) that gives different alignment directions to liquid crystal molecules adjacent to the alignment film in a region corresponding to one subpixel. It represents an integer.)
  • the alignment film is divided into a plurality of regions each having different alignment characteristics. As a result, the tilt direction and the orientation direction of the liquid crystal molecules adjacent to the alignment film have different directions in one sub-pixel, so that a wide viewing angle can be obtained.
  • the positional relationship of the n areas is switched in units of the sub-pixels or the pixels with the boundary line of the n areas as an axis.
  • the area ratio of each region where the alignment is divided is made uniform as a whole, and the disturbance of the area ratio due to misalignment during the manufacturing process is compensated. Therefore, display unevenness based on viewing angle dependence is suppressed.
  • the n is preferably an even number of 2 or more.
  • the n regions include a first region that gives an orientation direction in one direction and a second region that gives an orientation direction in another direction with respect to the liquid crystal molecules adjacent to the alignment film.
  • the width of the first region and the width of the second region are substantially the same.
  • a uniform viewing angle characteristic can be obtained by equalizing the widths of the regions having different orientation directions.
  • the orientation azimuth imparted by the first region and the orientation azimuth imparted by the second region are preferably opposite to each other.
  • the viewing angle characteristics can be improved in a well-balanced manner because the orientation directions given to the liquid crystal molecules by the regions divided in orientation are opposite to each other.
  • the alignment film on the other of the pair of substrates has m (m is 2 or more) that gives different alignment directions to liquid crystal molecules adjacent to the alignment film in a region corresponding to one subpixel. It is preferable to have a region of In particular, when the orientation azimuth imparted by the first region and the orientation azimuth imparted by the second region are opposite to each other, the m regions include the first region and the first region. A third region that provides an orientation orientation in an orientation orthogonal to the orientation orientation provided by the second region, and a fourth region that provides an orientation orientation opposite to the orientation orientation provided by the third region. It is preferable to have.
  • the width of the third region and the width of the fourth region are preferably substantially the same.
  • a uniform viewing angle characteristic can be obtained by equalizing the widths of regions to which orientation directions opposite to each other are given.
  • the positional relationship of the m regions is switched in units of the sub-pixels or the pixels with the boundary line of the m regions as an axis. Thereby, a structure strong against misalignment during the manufacturing process can be obtained.
  • the alignment splitting is performed when viewed as adjacent subpixels or the entire pixel. Since compensation is made so that the areas of the regions to be equalized are equal, an alignment film having well-balanced alignment characteristics can be produced, and a liquid crystal display device having excellent viewing angle characteristics can be obtained.
  • 2 is a schematic cross-sectional view of the liquid crystal display device of Embodiment 1.
  • FIG. 2 is a schematic plan view of a TFT array substrate in Embodiment 1.
  • FIG. 2 is a schematic plan view of a counter substrate in Embodiment 1.
  • FIG. 3 is a schematic plan view illustrating domains of subpixels in the liquid crystal display device of Embodiment 1.
  • FIG. 10 is a schematic plan view showing a state of exposure in the second embodiment.
  • FIG. 10 is a schematic plan view showing a state of exposure when an alignment shift occurs in Embodiment 2.
  • 10 is a schematic plan view illustrating a color arrangement in an application example of Embodiment 2.
  • FIG. 10 is a schematic plan view showing a state of exposure on one substrate of an application example of Embodiment 2.
  • FIG. 10 is a schematic plan view showing a state of exposure on the other substrate of the application example of Embodiment 2.
  • FIG. 10 is a schematic plan view illustrating a domain of subpixels in an application example of Embodiment 2.
  • FIG. 10 is a schematic plan view showing subpixel domains in the liquid crystal display device of Embodiment 3.
  • FIG. 6 is a schematic plan view showing domains of subpixels in the liquid crystal display device of Embodiment 4.
  • FIG. 10 is a schematic plan view showing domains of subpixels in the liquid crystal display device of Embodiment 5.
  • FIG. 10 is a schematic plan view illustrating an exposure area of a sub pixel in the liquid crystal display device of Embodiment 6.
  • FIG. 10 is a schematic plan view showing subpixel domains in a liquid crystal display device of Embodiment 6.
  • the “exposure direction” is the direction of light irradiated from an oblique direction with respect to the alignment film surface when the alignment film is viewed in plan.
  • the “alignment orientation” is a direction in which liquid crystal molecules located near the surface of the alignment film are inclined when the alignment film is viewed in plan.
  • the “pretilt angle” is an angle formed between the surface of the alignment film and the major axis direction of the liquid crystal molecules located near the surface of the alignment film when no voltage is applied.
  • domain refers to each region of a liquid crystal layer in which a plurality of liquid crystal molecules having the same tilt direction are present.
  • FIG. 6 is a schematic cross-sectional view of the liquid crystal display device according to the first embodiment.
  • the liquid crystal display device of Embodiment 1 includes a pair of substrates, a TFT array substrate 10 and a counter substrate 20, and a liquid crystal layer 30 provided between the TFT array substrate 10 and the counter substrate 20.
  • a TFT array substrate 10 and a counter substrate 20 have insulating substrates 11 and 21 such as a glass substrate and a resin substrate as support substrates.
  • the TFT array substrate 10 has a pixel electrode 12 for applying a driving voltage to the liquid crystal layer 30 and a vertical alignment film 13 in this order on the liquid crystal layer 30 side of the insulating substrate 11.
  • the pixel electrode 12 is provided in units of subpixels, and a plurality of pixels are arranged in a matrix.
  • a retardation plate 14 and a polarizing plate 15 are provided in this order on the opposite side of the insulating substrate 11 from the liquid crystal layer 30 side.
  • the counter substrate 20 has a common electrode 22 for applying a driving voltage to the liquid crystal layer 30 and a vertical alignment film 23 in this order on the liquid crystal layer 30 side of the insulating substrate 21.
  • the common electrode 22 is provided on substantially the entire surface of the counter substrate 20 regardless of subpixels or pixel boundaries.
  • a retardation plate 24 and a polarizing plate 25 are provided in this order on the opposite side of the insulating substrate 21 from the liquid crystal layer 30 side.
  • the liquid crystal layer 30 contains a nematic liquid crystal material (negative negative liquid crystal material) having a negative dielectric anisotropy.
  • the driving voltage is not applied to the liquid crystal layer 30 (when no voltage is applied)
  • the liquid crystal molecules 31 and 32 are aligned in a substantially vertical direction with respect to the surfaces of the vertical alignment films 13 and 23.
  • the liquid crystal molecules 31 and 32 are aligned with a slight inclination of about 0.1 ° to 4.0 ° with respect to the normal direction of the surfaces of the vertical alignment films 13 and 23. That is, the liquid crystal molecules 31 and 32 are aligned by the vertical alignment films 13 and 23 so as to have a slight pretilt angle.
  • the liquid crystal molecules 31 and 32 are further inclined in a certain direction due to the influence of a preset pretilt angle. To do.
  • the liquid crystal molecules 31 positioned approximately at the center in the thickness direction of the liquid crystal layer 30 are inclined to an angle substantially parallel to the surfaces of the TFT array substrate 10 and the counter substrate 20.
  • the vertical alignment films 13 and 23 are formed using a photo-alignment film material, and the alignment orientation given by the vertical alignment films 13 and 23 is relative to the surface of the vertical alignment films 13 and 23 through a photomask.
  • Depends on the exposure conditions for example, irradiation direction, irradiation angle and irradiation intensity
  • FIGS. 7 to 9 are schematic plan views showing domains formed in sub-pixels. Each of the boxes in FIGS. 7 to 9 corresponds to one domain. 7 and 9, the dotted arrow indicates the direction of light irradiated to the TFT array substrate (exposure direction), and in FIGS. 8 and 9, the solid line arrow indicates the direction of light irradiated to the counter substrate (exposure direction). Show.
  • the liquid crystal molecules 31 indicate the inclination of the liquid crystal molecules located at the approximate center of each domain in the thickness direction of the liquid crystal layer when the TFT array substrate or the counter substrate is viewed in plan. Yes.
  • the circle portion of the liquid crystal molecules 31 represents one end of the liquid crystal molecules, and the pointed portion represents the other end.
  • the vertical alignment films 13 and 23 provided in the TFT array substrate 10 and the counter substrate 20 are respectively in one subpixel when the TFT array substrate 10 or the counter substrate 20 is viewed in plan view. , And a region that gives orientation directions (direction A and direction B) in parallel and opposite directions. Further, as can be seen from FIG. 9, the light irradiation direction to the vertical alignment films 13 and 23 is designed to be orthogonal to each other when the TFT array substrate 10 and the counter substrate 20 are bonded together. Thereby, in each domain, the orientation orientation (first orientation and second orientation) given by the vertical orientation film 13 and the orientation orientation (third orientation and fourth orientation) given by the vertical orientation film 23 Are orthogonal to each other.
  • the liquid crystal molecules contained in the liquid crystal layer 30 are twisted and aligned by approximately 90 ° in a plane in each domain.
  • the liquid crystal molecules 31 that are located at the approximate center of each domain and at the approximate center in the thickness direction of the liquid crystal layer 30 are aligned in a direction shifted by approximately 45 ° with respect to the light irradiation direction, Inclined in the direction.
  • the liquid crystal display device of Embodiment 1 is a 4-domain VATN mode and has excellent viewing angle characteristics.
  • the TFT array substrate 10 and the counter substrate 20 are each subjected to two scanning exposures, and the twist direction of the liquid crystal molecules is obtained by a total of four scanning exposures.
  • Such a method is excellent in improving the efficiency of the number of apparatuses and the efficiency of the alignment processing time (shortening the tact time).
  • dividing one subpixel into four domains is very excellent in realizing a wide viewing angle of a liquid crystal display device. Note that one subpixel may only be divided into two domains. In this case, the viewing angle characteristic in the other direction can be improved, although the viewing angle in the other direction can be widened. Can not. Although the number of domains may be increased to six or more, the process becomes complicated and the processing time becomes longer, which is not efficient. Therefore, it is most preferable that each sub-pixel is divided into four domains.
  • each polarizing plate is disposed so that one of the polarization axis direction P and the polarization axis direction Q coincides with the light irradiation direction with respect to the vertical alignment film 13 included in the TFT array substrate 10, and the polarization axis direction P and the polarization axis.
  • the other of the directions Q is arranged so as to coincide with the light irradiation direction with respect to the vertical alignment film 23 of the counter substrate 20.
  • the liquid crystal display device of Embodiment 1 is in a normally black mode.
  • the arrangement relationship between the polarization axis direction of the polarizing plate 15 on the TFT array substrate 10 side and the polarization axis direction of the polarizing plate 25 on the counter substrate 20 side is not particularly limited as long as transmission and blocking of polarized light can be adjusted. However, a crossed Nicol arrangement that is approximately 90 ° different from each other is preferable.
  • the liquid crystal display device is a vertical alignment type (VA mode), but a horizontal alignment type liquid crystal display device may be used as long as the exposure conditions for the alignment film are satisfied.
  • the liquid crystal layer 30 contains a nematic liquid crystal material (positive nematic liquid crystal material) having a positive dielectric anisotropy, and the TFT array substrate 10 and the counter substrate 20 are formed of the vertical alignment films 13 and 23. Instead, a horizontal alignment film is provided.
  • FIG. 10 is a schematic plan view of the TFT array substrate in the first embodiment
  • FIG. 11 is a schematic plan view of the counter substrate in the first embodiment.
  • the TFT array substrate for example, a glass substrate on which scanning signal lines 16, data signal lines 17, TFTs 18, and pixel electrodes 12 are arranged via insulating films is used.
  • the scanning signal line 16 and the data signal line 17 are arranged so as to cross each other, and are connected to respective electrodes provided in a TFT (thin film transistor) 18.
  • TFT thin film transistor
  • the data signal supplied from the data signal line 17 is supplied to the pixel electrode 12 through the extended wiring 19 extending from the TFT 18 at that timing. Is done.
  • a plurality of pixel electrodes 12 are arranged in a matrix. Note that a CS wiring for assisting the pixel potential may be arranged so as to cross the pixel electrode 12 with an insulating film interposed therebetween.
  • the multi-driving method is adopted, and two TFTs 18 are connected to one scanning signal line 16, and each pixel electrode 12 is received by one scanning signal. Is supplied with a data signal.
  • the pixel potential of each pixel electrode 12 is varied using the potential of the CS wiring, and the viewing angle based on the ⁇ characteristic The dependency can be eliminated.
  • two pixel electrodes are included in one sub-pixel.
  • a BM (black matrix) 26 As shown in FIG. 11, as the counter substrate, for example, on a glass substrate, a BM (black matrix) 26, a red (R) colored layer 27R, a blue (B) colored layer 27B, and a green (G ) And the common electrode 22 are used in each of which a colored layer (color filter) 27 including the colored layer 27G is disposed.
  • the BM 26 is formed in a lattice shape, and a color filter 27 is formed in a region partitioned by the BM 26.
  • a stripe arrangement is used in which colored layers of the same color are arranged in the same column.
  • two sub-pixels include two regions divided by the BM 26, that is, two colored layers.
  • the BM 26 on the counter substrate 20 is formed at a position overlapping the scanning signal line 16, the data signal line 17, and the TFT 18 on the TFT array substrate.
  • each region in which two pixel electrodes or two colored layers are separated by the BM 26 constitutes one sub-pixel
  • red (R) A region formed by adding the sub-pixels corresponding to the combination of the colored layer 27R, the blue (B) colored layer 27B, and the green (G) colored layer 27G constitutes one pixel. Therefore, Px and Py shown in FIGS. 10 and 11 indicate the sub-pixel pitch. The color of the pixel is determined by the combination of the colors of the sub-pixels.
  • the type, number, and arrangement order of the colors constituting the sub-pixel There are no particular restrictions on the type, number, and arrangement order of the colors constituting the sub-pixel.
  • the color type for example, cyan, magenta, yellow, white, or the like may be used in addition to red, green, and blue.
  • sub-pixels of four colors for example, a combination of red, green, blue, and yellow, a combination of red, green, blue, and white can be used.
  • the vertical alignment film is formed, for example, by baking the coating liquid at 180 ° C. for 60 minutes.
  • the photo-alignment film material include a resin containing a photosensitive group. More specifically, a 4-chalcone group (the following chemical formula (1)), a 4′-chalcone group (the following chemical formula (2)), a coumarin group (the following chemical formula (3)), and a cinnamoyl group (the following chemical formula (4)).
  • a polymer such as polyimide containing a photosensitive group such as is preferred.
  • the photosensitive groups of the following chemical formulas (1) to (4) are those that cause a crosslinking reaction (including a dimerization reaction), an isomerization reaction, a photoreorientation, etc. by irradiation with light (preferably ultraviolet rays). Accordingly, the variation in the pretilt angle in the alignment film plane can be effectively reduced as compared with the photodecomposition type photo-alignment film material.
  • the photosensitive groups represented by the following chemical formulas (1) to (4) include structures in which a substituent is bonded to the benzene ring.
  • a cinnamate group (C 6 H 5 —CH ⁇ CH—COO—) in which an oxygen atom is further bonded to a carbonyl group in the cinnamoyl group of the following chemical formula (4) has an advantage that it can be easily synthesized. Therefore, the photo-alignment film material is more preferably a polyimide containing a cinnamate group.
  • the firing temperature, firing time, and film thickness of the photo-alignment film are not particularly limited and may be set as appropriate.
  • FIG. 3 is also a schematic plan view showing a state in which the alignment film is exposed through the photomask in the first embodiment.
  • exposure for photo-alignment processing is performed by, for example, a scanning (scanning) method through a photomask 51.
  • the scan exposure since the irradiation amount stability in the substrate surface is excellent, it is possible to effectively suppress variations in alignment film characteristics such as alignment azimuth and pretilt angle imparting characteristics.
  • the photomask for example, a transparent film such as glass on which a metal film such as chromium is attached in a predetermined pattern can be used, and a region where the metal film is formed is a light shielding portion, and the metal film is The area
  • Each photomask is formed with a plurality of slit-like light transmitting portions.
  • the scanning exposure does not need to be performed by dividing each sub-pixel. For example, each substrate is moved in one direction, and the first scanning exposure is performed from end to end of the sub-pixel in the row direction. Later, a method of performing second scanning exposure from end to end of subpixels in the column direction may be used, and mask splicing or shot splicing may be performed as necessary.
  • a method of moving the substrate In performing scanning exposure, a method of moving the substrate, a method of moving the photomask, a method of moving the light source, or a combination of these methods may be adopted. May be.
  • FIG. 1 and 2 are also schematic plan views showing a state of scanning exposure in the first embodiment.
  • two scanning exposures are performed along one side of the sub-pixel. Since the width per photomask corresponds to a half pitch of one subpixel, first, a first exposure having an exposure direction in one direction is performed, and then the exposure area is shifted by a half pitch. After the adjustment is performed, the second sub-exposure having the exposure direction in the opposite direction is performed on the remaining adjacent areas, so that the entire sub-pixel is exposed.
  • light used for exposure for example, polarized ultraviolet rays can be cited, and irradiation is performed from an oblique direction with respect to the alignment film surface. By such a photo-alignment treatment, the vertical alignment film can obtain characteristics that give a desired pretilt angle and alignment direction to liquid crystal molecules located in the vicinity of the surface thereof.
  • the scanning exposure is not performed with the same pattern for each sub-pixel, but the exposure pattern is different for each adjacent sub-pixel.
  • the left half region is the first region subjected to the first exposure
  • the right half region is the second region subjected to the second exposure.
  • the left half region is the second region subjected to the second exposure
  • the right half region is the first region subjected to the first exposure.
  • each of the regions exposed from different exposure directions that is, the positional relationship between the respective regions that give different orientation directions, has the boundary line between the first region and the second region as an axis.
  • the positional relationship between the first region and the second region is axisymmetric with respect to the boundary line of adjacent subpixels.
  • the exposure pattern when no misalignment occurs, the exposure pattern is the same as when the exposure pattern is the same for each sub-pixel, and when the misalignment of the photomask occurs as shown in FIG. Unlike the case where the pattern is the same for each sub-pixel (FIG. 5), when viewed as the entire adjacent sub-pixel, the balance of each region subjected to the photo-alignment treatment is compensated, and the area of the region to be aligned and divided is Uniformity and alignment division can be performed in a well-balanced manner.
  • Such scanning exposure is performed on both the TFT array substrate and the counter substrate.
  • a 4-domain VATN mode liquid crystal display device is manufactured as in the first embodiment, one of the substrates is exposed.
  • the exposure pattern (positional relationship between the regions that give different orientation directions) and the exposure pattern (positional relationship between the regions that give different orientation directions) performed on the other substrate are orthogonal to each other. Adjust so that
  • FIG. 12 is a schematic plan view showing a state of exposure on the other substrate facing the substrate on which the first exposure and the second exposure are performed in the first embodiment.
  • the exposure on the other substrate has an exposure direction in a direction orthogonal to the exposure directions of the first exposure and the second exposure.
  • the exposure is performed twice along one side of the subpixel, and the width per photomask corresponds to a half pitch of one subpixel. Therefore, first, scanning exposure (third exposure) having an exposure direction in one direction is performed, and then the slit is moved so that the exposure area is shifted by a half pitch, and then the remaining remaining area is adjacent. By performing scanning exposure (fourth exposure) having a reverse exposure direction, the entire sub-pixel is exposed.
  • FIG. 12 is a schematic plan view of the first embodiment when the exposure pattern is replaced on the other substrate.
  • the third region and the fourth region in the first embodiment are switched in units of sub-pixels around the boundary line between the third region and the fourth region in the pair of substrates described above.
  • the positional relationship between the third region and the fourth region is axisymmetric with respect to the boundary line of the subpixels adjacent to each other in the direction perpendicular to the boundary line of the adjacent subpixel. Yes.
  • FIG. 14 is a schematic plan view showing domains of subpixels in the liquid crystal display device of Embodiment 1.
  • the arrows in FIG. 14 indicate the orientation directions of the liquid crystal molecules near the center in the planar direction and the thickness direction of the liquid crystal layer of each domain.
  • the positional relationship of each domain region is switched in units of sub-pixels with any one of the domain boundary lines divided into a plurality of axes, that is, And having a symmetric domain arrangement.
  • the four alignment domains are maintained in balance when viewed in adjacent subpixel units, and the viewing angle characteristics are excellent and the display is performed.
  • a 4-domain VATN mode liquid crystal display device with less unevenness can be obtained.
  • the TFT array substrate and the counter substrate are bonded together, a sealing material is applied around each substrate, columnar spacers are formed at predetermined positions, and then the TFT array substrate and the counter substrate are bonded together. Then, a liquid crystal material is injected between the TFT array substrate and the counter substrate.
  • a phase difference plate and a polarizing plate are attached to the outer sides of the TFT array substrate and the counter substrate (on the side opposite to the liquid crystal layer side).
  • the polarizing plate is adjusted so that each polarization axis has the above relationship. Thereby, when no voltage is applied, the liquid crystal molecules are vertically aligned, and a good black display (normally black mode) can be realized.
  • Embodiment 1 is completed through a general module manufacturing process.
  • Embodiment 2 In the liquid crystal display device according to the second embodiment, the positional relationship between the first exposure and the second exposure having different exposure directions is sub-centered about the boundary line between the first and second regions. Although it is different from the liquid crystal display device of the first embodiment in that the pixel unit is not changed, it is the same as the liquid crystal display device of the first embodiment except that the pixel unit is changed.
  • FIG. 15 is a schematic plan view showing a state of exposure in the second embodiment.
  • the exposure is performed by two scanning exposures along one side of the sub-pixel. Since the width per photomask corresponds to a half pitch of one sub-pixel, first, scanning exposure (first exposure) having an exposure direction in one direction is performed, and then an exposure region is half-finished. After the slit is moved so as to be shifted by the pitch, the entire sub-pixel is exposed by performing scanning exposure (second exposure) having a reverse exposure direction on the remaining adjacent areas.
  • the area where the first exposure is performed and the area where the second exposure is performed are not interchanged in units of subpixels, but only in units of pixels. It has been replaced.
  • scanning exposure is performed with the same pattern for each sub-pixel, and the first exposure is performed in units of sub-pixels with the boundary between the first region and the second region as an axis.
  • the area to be made and the area to be subjected to the second exposure are not interchanged.
  • the first exposure is performed on the left half region as the first exposure, and then the right half region is performed as the second exposure. Is subjected to a second exposure.
  • the first exposure is performed on the right half region as the first exposure, and then the left half region is performed as the second exposure.
  • a second exposure is made.
  • the orientation direction of each region to be exposed that is, the positional relationship of each region that gives a different orientation direction is symmetrical with respect to the boundary line of adjacent pixels. is there.
  • FIG. 16 is a schematic plan view showing the state of exposure when an alignment shift occurs in the second embodiment.
  • Such exposure is performed on both the TFT array substrate and the counter substrate.
  • a 4-domain VATN mode liquid crystal display device is manufactured as in the second embodiment, one substrate is exposed.
  • the exposure pattern to be performed positional relationship between the regions giving different orientation directions
  • the exposure pattern to be performed on the other substrate positional relationship between the regions giving different orientation directions
  • the second embodiment even when a photomask misalignment occurs, the balance of the four alignment domains is maintained, the viewing angle characteristics are good, and the 4-domain VATN mode has little display unevenness.
  • a liquid crystal display device can be obtained.
  • FIG. 17 is a schematic plan view illustrating a color arrangement in an application example of the second embodiment.
  • FIGS. 18 and 19 are schematic plan views showing the state of exposure in the application example of Embodiment 2, FIG. 18 shows one of the pair of substrates, and FIG. 19 shows the pair of substrates.
  • the other substrate of FIG. FIG. 20 is a schematic plan view illustrating a domain of subpixels in an application example of the second embodiment.
  • the color types of the color filter in the application example of the second embodiment are four colors of red, yellow, blue, and green, and are arranged in the horizontal direction in this order.
  • the area of each color filter that is, the area of the sub-pixels is substantially the same for red and blue, yellow and green are substantially the same, and the areas of the red and blue sub-pixels are yellow. And larger than the area of the green sub-pixel.
  • the four color filters and making the areas of the sub-pixels different it is possible to adjust the color balance appropriately.
  • the area of the region where the alignment is divided can be compensated without losing the color balance.
  • the positional relationship between the orientation directions of the exposure regions in one of the pair of substrates is a sub-pixel unit with the boundary line of each exposure region as an axis.
  • the positional relationship of each exposure region is line symmetric with respect to the boundary line between adjacent pixels.
  • the positional relationship of the orientation direction of each exposure region in the other substrate of the pair of substrates is in pixel units with the boundary line of each exposure region as an axis.
  • the positional relationship between the domain regions is changed in units of pixels with the domain boundary line as the axis.
  • a balance between the four alignment domains is maintained, and a four-domain VATN mode liquid crystal display device having good viewing angle characteristics and less display unevenness can be obtained.
  • FIG. 21 is a schematic plan view illustrating domains of subpixels in the liquid crystal display device according to the third embodiment. As shown in FIG. 21, in the third embodiment, scanning exposure is performed three times for one substrate. The other substrate is subjected to scanning exposure three times in the same manner as the one substrate.
  • the width per photomask corresponds to a half pitch of one subpixel.
  • scanning exposure having an exposure direction in one direction is performed on a range of 1/4 of the sub-pixel, and then the exposure area is not shifted by a half pitch, and slits are formed in the remaining 1/4 area of the same row.
  • Scanning exposure having an exposure direction opposite to the exposure direction in the first exposure is performed on the remaining 1 ⁇ 4 area.
  • scanning exposure having an exposure direction in the direction orthogonal to the exposure direction in the first time and the second time is performed on the remaining area of the sub-pixel.
  • the entire subpixel is exposed.
  • the positional relationship between the areas where the exposures having different exposure directions are performed is changed in units of sub-pixels or pixels, with the boundary line of each area as an axis, in any of the pair of substrates. Therefore, even if misalignment occurs, when the adjacent sub-pixels or pixels are added together, the balance of each region subjected to the photo-alignment process as a whole is compensated.
  • the domain regions are adjacent to each other.
  • a liquid crystal display device in which the balance of the three alignment domains is maintained can be obtained.
  • FIG. 22 is a schematic plan view illustrating a domain of subpixels in the liquid crystal display device according to the fourth embodiment.
  • the scanning exposure is performed twice on one substrate.
  • the other substrate is subjected to one scanning exposure having an exposure direction in a direction orthogonal to the exposure direction of each exposure performed on the pair of substrates.
  • the width per photomask corresponds to a half pitch of one subpixel.
  • two scanning exposures with different exposure directions are performed on one substrate along one side of the sub-pixel.
  • the other substrate is subjected to one scanning exposure along another side orthogonal to one side of the sub-pixel.
  • each region where each exposure having different exposure directions is performed is changed in units of sub-pixels or in units of pixels around the boundary line of each region.
  • the adjacent sub-pixels or pixels are added together, the balance of each region subjected to the photo-alignment process as a whole is compensated.
  • the positional relationship between the domain regions is changed in units of sub-pixels or in units of pixels with the domain boundary line as an axis, even if a photomask misalignment occurs, they are adjacent to each other.
  • a liquid crystal display device in which the balance between the two alignment domains is maintained can be obtained.
  • FIG. 23 is a schematic plan view illustrating a domain of subpixels in the liquid crystal display device according to the fifth embodiment.
  • the scanning exposure is performed twice on one substrate along one side of the sub-pixel.
  • the other substrate is subjected to scanning exposure twice along another side orthogonal to one side of the sub-pixel.
  • the width per photomask corresponds to a half pitch of one sub-pixel. Therefore, first, scanning exposure having the exposure direction in one direction (first exposure) is performed. Subsequently, after the slit is moved so that the exposure area is shifted by a half pitch, scanning exposure (second exposure) having an opposite exposure direction is performed on the remaining adjacent areas, so that The whole is exposed.
  • the width per photomask corresponds to a half pitch of one sub-pixel. Therefore, first, scanning exposure having an exposure direction in one direction (third exposure). Then, after moving the slit so that the exposure area is shifted by half a pitch, by performing scanning exposure (fourth exposure) with the opposite exposure direction to the remaining adjacent area, The entire subpixel is exposed.
  • the positional relationship between the areas in which the first exposure and the second exposure having different exposure directions are performed, the sub-pixel unit or Since the pixel units are switched, even if an alignment shift occurs, when the adjacent sub-pixels or pixels are added together, the balance of the regions subjected to the photo-alignment process as a whole is compensated.
  • the positional relationship between the domain regions is changed in units of sub-pixels or in units of pixels with the domain boundary line as an axis, even if a photomask misalignment occurs, they are adjacent to each other.
  • a multi-drive 4-domain VATN mode liquid crystal display device that can maintain a balance of eight alignment domains, has good viewing angle characteristics, and has little display unevenness. Can do.
  • Embodiment 6 In the liquid crystal display device of Embodiment 6, the direction of light exposed to the substrate is not the vertical direction but the horizontal direction, and two exposure regions having opposite directions are formed in the same subpixel. However, the liquid crystal display device of the first embodiment is different from the liquid crystal display device of the first embodiment.
  • FIG. 24 is a schematic plan view showing an exposure area of a sub-pixel in the liquid crystal display device according to the sixth embodiment. As shown in FIG. 24, in the sixth embodiment, at least two scanning exposures are performed on one substrate. The number of exposures is not particularly limited for the other substrate.
  • the width per photomask corresponds to a half pitch of one subpixel.
  • two scanning exposures with different exposure directions are performed on one substrate along one side of the sub-pixel.
  • the arrangement of the mask is adjusted in units of two adjacent sub-pixels, adjusted so that a half pitch is shielded in one sub-pixel, and in a checkered pattern in units of two adjacent sub-pixels. Adjust so that light is blocked.
  • the other substrate is subjected to one or more scanning exposures along another side orthogonal to one side of the sub-pixel.
  • the positional relationship between the areas where the exposures having different exposure directions are performed is changed in units of sub-pixels or in units of pixels around the boundary line of each area.
  • the positional relationship between the first exposure and the second exposure having different exposure directions is sub-centered about the boundary line between the first and second regions. In this case, even if there is a misalignment, if the subpixels or pixels adjacent to each other are added together, the entire light is switched. The balance of each region subjected to the alignment treatment is compensated.
  • FIG. 25 is a schematic plan view illustrating domains of sub-pixels in the liquid crystal display device according to the sixth embodiment.
  • FIG. 25 it is assumed that the exposure of the other substrate out of the pair of substrates is performed in the vertical direction and in two opposite exposure directions.
  • the positional relationship between the domain regions is changed in units of sub-pixels around the domain boundary line that bisects the sub-pixels vertically. Even if it happens, the area of each domain is compensated.
  • the exposure method of the sixth embodiment can be applied to any of the second to fifth embodiments.

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Abstract

L'invention porte sur un procédé pour fabriquer un dispositif d'affichage à cristaux liquides, dans lequel, même si un défaut d'alignement d'un photomasque se produit lorsqu'une division d'alignement est effectuée, une irrégularité d'affichage ne tend pas à se produire. Il est décrit de façon spécifique un procédé pour fabriquer un dispositif d'affichage à cristaux liquides, qui comporte une paire de substrats ayant chacun un film d'alignement sur la surface côté couche de cristal liquide de ceux-ci, et une couche de cristal liquide disposée entre la paire de substrats, un pixel étant configuré par un sous-pixel unique ou par de multiples sous-pixels. Ledit procédé de fabrication comprend une étape d'exposition dans laquelle une lumière est appliquée à la surface du film d'alignement d'un substrat de la paire de substrats par l'intermédiaire d'un photomasque, et l'intérieur d'une région correspondant à un sous-pixel du film d'alignement est divisé en n (n désigne un entier supérieur ou égal à 2) régions ayant des directions d'alignement différentes, et les relations de position des n régions sont inversées avec l'une quelconque de lignes de limite entre les n régions constituant un axe dans des unités desdits sous-pixels ou dans des unités desdits pixels.
PCT/JP2011/059960 2010-06-07 2011-04-22 Procédé pour fabriquer un dispositif d'affichage à cristaux liquides, et dispositif d'affichage à cristaux liquides WO2011155272A1 (fr)

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CN102681258A (zh) * 2012-04-25 2012-09-19 南京中电熊猫液晶显示科技有限公司 一种紫外光配向的液晶显示器的制造方法
CN103257480A (zh) * 2013-05-27 2013-08-21 南京中电熊猫液晶显示科技有限公司 一种液晶va模式的配向方法
CN103389597A (zh) * 2012-05-11 2013-11-13 群康科技(深圳)有限公司 具错位像素的液晶显示器
CN103389598A (zh) * 2012-05-10 2013-11-13 群康科技(深圳)有限公司 配向平衡的多视域液晶显示器
CN104483779A (zh) * 2014-11-20 2015-04-01 深圳市华星光电技术有限公司 Uv2a像素结构
TWI480648B (zh) * 2012-05-10 2015-04-11 Innocom Tech Shenzhen Co Ltd 配向平衡之多視域液晶顯示器
US9217873B2 (en) 2012-05-11 2015-12-22 Innolux Corporation Liquid crystal display with shifted pixels
CN111566549A (zh) * 2018-01-19 2020-08-21 堺显示器制品株式会社 液晶显示装置的制造方法及光掩模

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WO2007144998A1 (fr) * 2006-06-13 2007-12-21 Sharp Kabushiki Kaisha Procédé de fabrication d'un appareil d'affichage à cristaux liquides et ce même appareil

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102681258A (zh) * 2012-04-25 2012-09-19 南京中电熊猫液晶显示科技有限公司 一种紫外光配向的液晶显示器的制造方法
CN102681258B (zh) * 2012-04-25 2016-01-20 南京中电熊猫液晶显示科技有限公司 一种紫外光配向的液晶显示器的制造方法
TWI480648B (zh) * 2012-05-10 2015-04-11 Innocom Tech Shenzhen Co Ltd 配向平衡之多視域液晶顯示器
CN103389598A (zh) * 2012-05-10 2013-11-13 群康科技(深圳)有限公司 配向平衡的多视域液晶显示器
TWI551930B (zh) * 2012-05-11 2016-10-01 群康科技(深圳)有限公司 具錯位畫素之液晶顯示器
US9217873B2 (en) 2012-05-11 2015-12-22 Innolux Corporation Liquid crystal display with shifted pixels
CN103389597A (zh) * 2012-05-11 2013-11-13 群康科技(深圳)有限公司 具错位像素的液晶显示器
CN103389597B (zh) * 2012-05-11 2017-01-18 群康科技(深圳)有限公司 具错位像素的液晶显示器
CN103257480B (zh) * 2013-05-27 2015-12-09 南京中电熊猫液晶显示科技有限公司 一种液晶va模式的配向方法
CN103257480A (zh) * 2013-05-27 2013-08-21 南京中电熊猫液晶显示科技有限公司 一种液晶va模式的配向方法
CN104483779A (zh) * 2014-11-20 2015-04-01 深圳市华星光电技术有限公司 Uv2a像素结构
CN111566549A (zh) * 2018-01-19 2020-08-21 堺显示器制品株式会社 液晶显示装置的制造方法及光掩模
CN111566549B (zh) * 2018-01-19 2023-03-24 堺显示器制品株式会社 液晶显示装置的制造方法及光掩模

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