JP2008304892A - Liquid crystal display device and method for manufacturing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid crystal display device by which it is possible to improve color reproducibility and contrast by adequately setting the value of Δnd of each color without changing thickness of a liquid crystal layer. <P>SOLUTION: A partition wall PT made of resin is prepared between pixels, which comprises color filter columns of CF-R, CF-G and CF-B. Liquid crystals LC(R), LC(G), and LC(B) having different values of Δn are filled in the pixels partitioned by the partition wall PT. The partition wall PT also fulfills the function as a spacer to maintain cell gap at a predetermined value. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a liquid crystal display device, and more particularly to a liquid crystal display device in which a change in chromaticity due to a viewing angle is suppressed to improve contrast and a method for manufacturing the same.

  The contrast and the viewing angle change depending on the product Δnd of the refractive index anisotropy Δn of the liquid crystal and the layer thickness (cell gap) d of the liquid crystal layer. When the normally black mode is selected, the front contrast decreases. Further, in a full-color liquid crystal display device that performs multicolor display using a plurality of color filters typified by three colors of red, green, and blue, the frequency of display light that passes through the color filter through the liquid crystal is different. When the viewing angle changes, Δn · d changes and the chromaticity changes.

  FIG. 12 is an explanatory diagram of a configuration example of one pixel of the liquid crystal display device. 12A shows a plane, and FIG. 12B shows a cross section taken along the line A-A ′ of FIG. This liquid crystal display device is a so-called TN type, and has a thin film transistor (TFT) and a pixel electrode PX driven by this TFT on the inner surface of one insulating substrate (hereinafter, glass substrate) SUB1. Each pixel electrode PX constitutes a color sub-pixel (sub-pixel), but for simplification of description, it is referred to as a pixel unless otherwise required. In FIG. 12, the other glass substrate provided with the counter electrode is not shown. In addition, the liquid crystal display device is configured by combining a liquid crystal display panel with a drive circuit, a display control circuit board, a backlight, and other components. However, since the viewpoint of the present invention is the configuration of the liquid crystal display panel, The display panel will be described as a liquid crystal display device.

  The glass substrate SUB1 is also referred to as a TFT substrate or an active matrix substrate, and includes a gate electrode GT constituted by a gate line GL, a gate insulating layer GI, a semiconductor layer AS suitable for silicon, an n + semiconductor layer (ohmic contact layer), and a source electrode. (Or a drain electrode) and a drain electrode (or source electrode)) SD, a protective layer (passivation layer) PAS, and a pixel electrode PX. The pixel electrode PX is electrically connected to the source electrode (or drain electrode) through the through hole TH opened in the protective layer PAS. The drain electrode SD (or source electrode) extends from the data line (drain line) DL and is formed on the n + semiconductor layer. In this configuration example, the capacitor line CE is disposed below the pixel electrode across the pixel region.

  FIG. 13 is a schematic diagram for explaining the light transmittance of each color in the liquid crystal display device shown in FIG. In the figure, the same reference numerals as those in FIG. 12 correspond to the same functional parts. SUB2 is the other glass substrate described above, and color filters CF-R (red), CF-G (green), and CF-B (blue) are provided, so this substrate is a color filter substrate (CF substrate). Called. Each of the color filters CF-R, CF-G, and CF-B constitutes a color subpixel, and one group of these three subpixels constitutes one color pixel. Each of the color filters CF-R, CF-G, and CF-B is partitioned by a light shielding film (black matrix) BM, and a counter electrode (common electrode) CT is formed thereon. An alignment film (not shown) is formed on the innermost surface, and is provided with liquid crystal alignment control ability such as rubbing treatment. A similar alignment film is also formed on the innermost surface of the TFT substrate SUB1, and the same liquid crystal alignment control ability is imparted. A lower polarizing plate POL1 and an upper polarizing plate POL2 are provided on the outer surfaces of the TFT substrate SUB1 and the CF substrate SUB2, respectively.

An upward arrow in FIG. 13 indicates light emitted as white light emitted from a backlight (not shown) as observation light through the TFT substrate SUB1 and the CF substrate SUB2. In this configuration, the liquid crystal layer LC is common to all color sub-pixels, and the layer thickness, that is, the cell gap, of the liquid crystal layers of the respective colors is the same. Here, the transmittance T of the sub-pixel is roughly expressed by the following equation using the center wavelength λr of the transmitted color of the sub-pixel, the refractive index anisotropy Δn of the liquid crystal, and the layer thickness d of the liquid crystal layer.
T = sin ² {πΔnd / λr}
The light transmittance varies from pixel to pixel.

  FIG. 14 is a schematic diagram illustrating an example of light transmittance for each pixel device. The color filters CF-R, CF-G, and CF-B provided in different color pixels have different light transmittances, Δn of the liquid crystal is 0.0968, and the thickness of the liquid crystal layer LC is 2.85 μm. In this case, assuming that the green pixel provided with the color filter CF-G is 100%, the red pixel is 94.5% and the blue pixel is 87.9%. The chromaticity changes due to the different transmittances of the three colors. In the normally open mode, white is colored yellow, and in the normally closed mode, black is colored.

In order to suppress such a change in chromaticity, the layer thickness of the transparent insulating layer (top coat) covering the pixel electrode and the color filter is made different for each color, or the layer thickness of the color filter is made different for each color ( A multi-gap method is proposed in which the thickness of a glass substrate on which a pixel electrode is formed is changed for each pixel (Patent Document 2).
JP-A-7-175050 JP 7-28071 A

  With the means disclosed in Patent Document 1 in which the thickness of the top coat is different for each color or the layer thickness of the color filter is different for each color, it is difficult to accurately set each layer thickness, and between adjacent pixels. The steps are likely to vary, and it is difficult to set an appropriate Δnd value for each pixel. Further, the means for changing the thickness of the glass substrate for each pixel disclosed in Patent Document 2 increases the number of processes for processing the glass substrate, and various thin films and pixel electrodes applied between adjacent pixels. Further, it is difficult to precisely form a step between insulating films such as a top coat.

  An object of the present invention is to provide a liquid crystal display device in which Δnd of each color is appropriately set and the color reproducibility and contrast are improved without changing the layer thickness of the liquid crystal layer, and a manufacturing method thereof.

  In the liquid crystal display device of the present invention, a first substrate on which a large number of pixels having different display colors are arranged, a second substrate arranged opposite to the substrate, and the first substrate and the second substrate The refractive index anisotropy Δn (λ) of the liquid crystal layer defined by an arbitrary wavelength λ is varied according to the display color of the pixel.

  In the liquid crystal display device of the present invention, the first substrate on which a large number of pixels having different display colors are arranged, the second substrate arranged opposite to the substrate, the first substrate and the second substrate And a liquid crystal layer sandwiched between them, and a display unit is constituted by a plurality of pixels having different display colors, and the refractive index anisotropy Δn of the liquid crystal layer defined by an arbitrary wavelength λ (Λ) was varied according to the display color of the pixel.

Also, for the first liquid crystal layer applied to the first pixel having the display color of the central light wavelength λ ₁ and the second liquid crystal layer applied to the second pixel having another display color,
The refractive index anisotropy at the wavelength λ ₁ of the first liquid crystal layer is Δn ₁ (λ ₁ ), the refractive index anisotropy at the wavelength λ ₁ of the second liquid crystal layer is Δn ₂ (λ ₁ ), and the liquid crystal layer. When the thickness is d,
sin ² (π · d · Δn ₁ (λ ₁ ) / λ ₁ )> sin ² (π · d · Δn ₂ (λ ₁ ) / λ ₁ )
Δnd was determined so that

  In the liquid crystal display device of the present invention, a partition wall that partitions pixels having different display colors is provided. Further, as the partition wall, a first partition wall that partitions pixels having different display colors is provided, and a second partition wall that partitions one or a plurality of pixels having the same display color is provided.

And the manufacturing method of the liquid crystal display device of this invention is as follows.
Forming a large number of pixels composed of a plurality of pixels for displaying different display colors on the first substrate;
Applying a liquid crystal having different refractive index anisotropy for each of the different display colors to corresponding pixels on the first substrate;
Placing the second substrate opposite to the first substrate and sealing the liquid crystal;
including. In the present invention, an inkjet method can be used for applying the liquid crystal.

The thickness of the liquid crystal layer is made constant, and Δn of the liquid crystal constituting each pixel is changed. Δn of each pixel improves color reproducibility and contrast without changing the layer thickness of the liquid crystal layer by setting sin ² (Δnd / λ) to 1 with respect to the center light wavelength λ of the pixel. A liquid crystal display device is realized. Further, the liquid crystal layer includes one liquid crystal layer applied to a pixel having a display color with a central light wavelength λ ₁ and the other liquid crystal layer applied to a pixel having another display color,
The refractive index anisotropy at the wavelength λ ₁ of the _one liquid crystal layer is Δn ₁ (λ ₁ ), the refractive index anisotropy at the wavelength λ ₁ of the other liquid crystal layer is Δn ₂ (λ ₁ ), and the liquid crystal layer thickness is d
sin ² (π · d · Δn ₁ (λ ₁ ) / λ ₁ )> sin ² (π · d · Δn ₂ (λ ₁ ) / λ ₁ )
By setting Δnd so as to satisfy the following, a large practical effect can be obtained.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS The best mode for carrying out the present invention will be described below in detail with reference to the drawings of the examples.

  FIG. 1 is a schematic cross-sectional view for explaining Example 1 of the liquid crystal display device according to the present invention. A TFT is formed on the inner surface of the glass substrate SUB1, which is a TFT substrate, and a protective layer, a pixel electrode, and an alignment film are formed. On the other hand, the color filter CF-R (red), CF-G (green), CF-B (blue), counter electrode, alignment film, etc., partitioned by the black matrix BM are formed on the inner surface of the glass substrate SUB2, which is a color filter substrate. Is formed. A partition wall PT is provided between the pixels. In FIG. 1, the alignment film, the counter electrode, and the like are not shown. Except for the partition wall PT, the same reference numerals as in FIGS. 12 to 14 correspond to the same parts.

  FIG. 2 is a schematic plan view illustrating Example 1 of the liquid crystal display device according to the present invention. FIG. 2 shows 8 × 4 pixels PX in a matrix arrangement only at the four corners of the glass substrate SUB1 and at the upper and lower portions of the center. FIG. 3 is a plan view showing pixels of a 4 × 2 matrix array in which the portion A in FIG. 2 is enlarged. One pixel is formed in a region surrounded by the gate line GL and the data line DL. In the first embodiment, red, green, and blue pixels are arranged in the vertical direction of the figure indicated by arrows in the drawing. In other words, color filter rows (R), (G), and (B) of the same color are arranged in the direction of the arrow.

  In Example 1, a partition wall PT made of resin is provided between the color filter rows (R), (G), and (B). The partition wall PT is provided along the data line DL. Each pixel partitioned by the partition wall PT is filled with liquid crystals LC (R), LC (G), and LC (B) having Δn for each color. The partition wall PT also functions as a spacer that keeps the cell gap at a predetermined value.

The value of Δn for each color is 0.1199 for the R pixel, 0.0968 for the G pixel, and 0.0824 for the B pixel. The layer thickness d of the liquid crystal layer is 2.85 μm. Therefore, Δnd is 0.341 μm for the R pixel, 0.275 μm for the G pixel, and 0.234 μm for the B pixel. One of the liquid crystal layers applied to a pixel having a display color of the center light wavelength λ ₁ , although sin ² (πΔnd / λ) is ideally 1 for the center light wavelength λ of each color pixel, and Having the other liquid crystal layer applied to a pixel having another display color, the refractive index anisotropy at the wavelength λ ₁ of the _one liquid crystal layer is Δn ₁ (λ ₁ ), and the wavelength λ of the other liquid crystal layer _When the refractive index anisotropy at ₁ is Δn ₂ (λ ₁ ) and the liquid crystal layer thickness is d,
sin ² (π · d · Δn ₁ (λ ₁ ) / λ ₁ )> sin ² (π · d · Δn ₂ (λ ₁ ) / λ ₁ )
If Δnd is determined so as to satisfy, there is no practical problem. According to this embodiment, a liquid crystal display device with improved color reproducibility and contrast can be obtained.

  FIG. 4 is a schematic cross-sectional view of a TFT substrate for explaining the manufacturing method of Embodiment 1 of the liquid crystal display device according to the present invention. FIG. 5 is a diagram for explaining an example of a liquid crystal coating method in the manufacturing method of the liquid crystal display device according to the first embodiment of the present invention. 4 and 5, the same reference numerals as those in FIG. 1 correspond to the same parts. First, a TFT is formed on the inner surface of the glass substrate SUB1, which is a TFT substrate, and an alignment film is applied to impart liquid crystal alignment control ability. A resin partition wall PT is provided along the data line DL of the TFT substrate. Screen printing is suitable for the partition wall PT, but other means such as a photolitho process may be used. In the drawing, the thickness of the partition wall is emphasized extremely thin with respect to its height. This is for emphasizing the function as a wall. Actually, the height is equivalent to a cell gap, and it can be sufficiently formed by application such as screen printing. The partition wall PT may be formed on the CF substrate side.

  After the partition wall PT shown in FIG. 4 is formed, liquid crystal is applied to the individual pixel portions partitioned by the partition wall. In this embodiment, the liquid crystal is applied by an ink jet method. That is, it is performed by the inkjet coating head IJH in which a plurality of inkjet nozzles (IJ nozzles) NZ corresponding to a plurality of colors are arranged. The ink jet coating head IJH shown in FIG. 5 shows an array of IJ nozzles NZ such as red (R), green (G), blue (B), red (R),. While moving the inkjet coating head IJH relative to the TFT substrate on which the partition wall PT is formed, a liquid crystal droplet LD is dropped on the corresponding pixel portion. The Δn of each color liquid crystal is as described above.

  A liquid crystal droplet LD is dropped on each pixel portion to fill the pixel portion. Here, the amount to be dropped will be described. The pixel size formed on the TFT substrate is 150 μm × 450 μm, the cell gap (liquid crystal layer thickness: d) is 2.85 μm, and the number of pixels in the row direction (horizontal direction) is 768. In this case, if the liquid crystal droplet size is 147.7 pl, the number of drops is 1000 drops per horizontal pixel row, and the total amount of drops is 147,744 pl.

  Note that the number and size of the liquid crystal droplets LD affect the yield. From the viewpoint of yield, it is better that the size of the liquid crystal droplets is large. However, if the liquid crystal droplet size is large, it becomes difficult to perform defective ejection of the IJ nozzle and precise control of the ejection amount. Therefore, although the yield is lowered, the quality of the product can be manufactured by decreasing the size of the liquid crystal droplets to be dropped and increasing the number of drops.

  According to the first embodiment described above, a liquid crystal display device capable of displaying a high-quality image with improved contrast by suppressing a change in chromaticity due to a viewing angle is realized.

  FIG. 6 is a schematic cross-sectional view for explaining Example 2 of the liquid crystal display device according to the present invention. The same reference numerals as those in FIG. 1 correspond to the same parts. In FIG. 6, the alignment film, the counter electrode, and the like are not shown. In the first embodiment, the partition wall PT is in contact with the black matrix BM of the CF substrate to partition the adjacent pixels. In this example, the black matrix on which the partition wall PT is arranged is partially removed, and the partition wall PT is brought into direct contact with the CF substrate. That is, when the cell gap is h, the height H of the partition wall PT is H> h.

  FIG. 7 is a diagram for explaining an example of a liquid crystal coating method similar to FIG. 5 for explaining the production method of the liquid crystal display device according to the second embodiment of the present invention. 6 and 7, the same reference numerals as those in FIG. 1 correspond to the same parts. First, as in FIG. 4, a TFT is formed on the inner surface of a glass substrate SUB1, which is a TFT substrate, and an alignment film is applied to impart liquid crystal alignment control ability. A resin partition wall PT is provided along the data line DL of the TFT substrate. The reason why the thickness of the partition wall is emphasized extremely thin with respect to its height is the same as in the first embodiment. As described with reference to FIG. 6, the height of the partition wall PT is set higher than the cell gap. This partition wall PT can also be sufficiently formed by application such as screen printing. The partition wall PT may be formed on the CF substrate side.

  The partition wall PT is formed higher by (Hh) than the first embodiment. After the partition wall PT is formed, the liquid crystal is applied to each pixel portion partitioned by the partition wall using the ink jet coating head IJH. This coating method is the same as in Example 1.

  Also according to the second embodiment described above, a liquid crystal display device capable of high-quality image display with improved contrast by suppressing a change in chromaticity due to a viewing angle can be obtained.

  FIG. 8 is a plan view of a principal part for explaining a third embodiment of the liquid crystal display device according to the present invention. In the first and second embodiments, pixels of the same color are arranged in the vertical direction (vertical direction) as indicated by double arrows in FIG. 8, and a partition wall is provided only between the arrangement of adjacent pixels in the arrangement direction of the pixels of the same color. Arranged. In this embodiment, in addition to the partition wall PT-V in the vertical direction, the partition wall PT-H is also provided in the left-right direction (horizontal direction). The partition wall PT-H is provided for each predetermined pixel in the vertical direction. In this embodiment, for example, it is provided every 20 pixels.

  An example of the amount of liquid crystal dropped in this embodiment will be described. The pixel size is 150 μm × 450 μm, and the cell gap is 2.85 μm. If the amount of liquid crystal dropped to the area partitioned by the vertical partition walls that divide 20 pixels is 3847 pl, and the liquid crystal droplet size is 3.85 pl, the number of drops will be 1000 drops.

  In order to make the liquid crystal flow in such a long region surrounded by the partition wall PT-V in the vertical direction and fill a sufficient amount of liquid crystal in each pixel, it is necessary to drop some excess liquid crystal. Thereby, extra stress is applied to the partition wall PT-H in the vertical direction. According to the present embodiment, in addition to the effects of the above embodiments, the stress can be reduced by installing the partition wall PT-H in the left-right direction to reduce the amount of liquid crystal for each section. It is possible to prevent the occurrence of defects due to the deformation of the.

  FIG. 9 is a schematic plan view similar to FIG. 2 for explaining the fourth embodiment of the liquid crystal display device according to the present invention. FIG. 9 illustrates 8 × 4 pixels PX in a matrix arrangement only at the four corners and the upper and lower portions of the glass substrate SUB1. FIG. 10 is a plan view similar to FIG. 8 showing pixels of a 16 × 4 matrix array in which the portion B in FIG. 2 is enlarged. One pixel is formed in a region surrounded by the gate line GL and the data line DL. In the first embodiment, red, green, and blue pixels are arranged in the vertical direction of the figure indicated by arrows in the drawing. In other words, color filter rows (R), (G), and (B) of the same color are arranged in the direction of the arrow.

  In the fourth embodiment, dummy pixels that do not inject liquid crystal are arranged above, below, and to the left and right of the effective display area AR. That is, the vertical partition wall PT-V and the horizontal partition wall PT-H described above are also provided in the dummy pixel region PPA part around the effective display region AR, and the dropped liquid crystal is outside the effective display region AR. To prevent leakage.

  According to the present embodiment in which the dummy pixel area is arranged, the partition wall of the effective display area is obtained when the CF substrate is bonded and the two substrates are pressed against each other to create a gap, or when mounted on an electronic device as a product. The display load at the end of the effective display area can be prevented. Other effects are the same as those of the above embodiments.

  FIG. 11 is a schematic plan view similar to FIG. 9 for explaining the fifth embodiment of the liquid crystal display device according to the present invention. FIG. 11 also shows 8 × 4 matrix array pixels PX only at the upper and lower corners of the glass substrate SUB1. In this embodiment, the resin frame SFL is provided on the outer periphery of the glass substrate SUB1, which is a TFT substrate. This resin frame SFL is made of the same resin material as that of the partition wall. A sealing material (not shown) is applied to the outer side of the resin frame SFL, and a glass substrate SUB2 (see FIG. 1 and the like), which is a CF substrate, is attached to create a gap.

  According to the present embodiment, when the CF substrate is bonded and the two substrates are pressed against each other to create a gap, or when mounted on an electronic device as a product, the load on the partition wall in the effective display area is greatly increased. It is reduced and display defects at the end of the effective display area can be prevented. Other effects are the same as those of the above embodiments. This embodiment can be combined with the fourth embodiment.

  In each of the embodiments described above, the present invention has been described by taking a transmissive liquid crystal display device as an example. The same applies to a liquid crystal display device. Furthermore, the present invention is not limited to the TN mode described in the above embodiment, but can be applied to IPS mode and VA mode liquid crystal display layers.

  When the liquid crystal layer is horizontally aligned, it is desirable to use a resin material exhibiting vertical alignment as the partition wall, and when the liquid crystal layer is vertically aligned, it is desirable to use a resin material exhibiting horizontal alignment as the partition wall. This is to prevent the liquid crystal orientation from being disturbed by the partition wall.

  As described above, according to the present invention, the cell gap of the liquid crystal display device is constant for all pixels, and Δn of the liquid crystal to be sealed is appropriate for each pixel of red (R), green (G), and blue (B). Set to value. Therefore, a partition wall is also provided between adjacent pixels of different colors so that each liquid crystal is independent within the same color pixel. This partition wall also functions as a spacer for holding the cell gap.

  Since the emission spectrum of the pixel varies greatly depending on the light source used and the transmission spectrum of the color filter, the definition of the center light wavelength is, for example, the peak wavelength in the case of an emission spectrum having a peak, or the half-value width in the case of gentle characteristics There are various ways of defining the center wavelength, etc. Which definition is used is a design matter of the liquid crystal display device, but the present invention can obtain an effect regardless of the definition method.

  In the present invention, the type of light source used in the liquid crystal display device is not particularly specified, but the transmittance of the liquid crystal layer can be increased by combining with a light source having a steep emission spectrum such as an LED light source. , More effective.

  The liquid crystal display device of the present invention can improve the contrast by suppressing the chromaticity change due to the viewing angle, and can be mounted on a television receiver, a personal computer monitor, and other consumer and industrial electronic devices. And video display.

It is a cross-sectional schematic diagram explaining Example 1 of the liquid crystal display device based on this invention. It is a plane schematic diagram explaining Example 1 of the liquid crystal display device which concerns on this invention. FIG. 3 is a plan view showing pixels of a 4 × 2 matrix array in which a portion A in FIG. 2 is enlarged. It is a cross-sectional schematic diagram of the TFT substrate explaining the manufacturing method of Example 1 of the liquid crystal display device based on this invention. It is a figure explaining an example of the liquid-crystal coating method in the manufacturing method of Example 1 of the liquid crystal display device based on this invention. It is a cross-sectional schematic diagram explaining Example 2 of the liquid crystal display device based on this invention. It is a figure explaining an example of the liquid-crystal coating method similar to FIG. 5 explaining the manufacturing method of Example 2 of the liquid crystal display device based on this invention. It is a principal part top view explaining Example 3 of the liquid crystal display device based on this invention. FIG. 6 is a schematic plan view similar to FIG. 2 for explaining a fourth embodiment of the liquid crystal display device according to the present invention. FIG. 9 is a plan view similar to FIG. 8 showing pixels of a 16 × 4 matrix array in which the portion B of FIG. 2 is enlarged. FIG. 10 is a schematic plan view similar to FIG. 9 illustrating Embodiment 5 of the liquid crystal display device according to the present invention. It is explanatory drawing of the structural example of 1 pixel of a liquid crystal display device. It is a schematic diagram explaining the light transmittance of each color in the liquid crystal display device shown in FIG. It is a schematic diagram which shows the example of the transmittance | permeability of the light for every pixel apparatus.

Explanation of symbols

  SUB1 ... TFT substrate (glass substrate), SUB2 ... CF substrate (glass substrate), DL ... data line, GL ... gate line, PX ... pixel electrode, CF-R ... red Color filter, CF-G ... green color filter, CF-B ... blue color filter, BM ... black matrix, LC (R) ... red liquid crystal, LC (G) ... -Green liquid crystal, LC (B) ... Blue liquid crystal, PT ... Partition wall.

Claims (10)

Sandwiched between a first substrate on which a large number of pixels of different display colors are arranged, a second substrate arranged to face the substrate, and the first substrate and the second substrate A liquid crystal layer,
A liquid crystal display device, wherein a refractive index anisotropy Δn (λ) of the liquid crystal layer at an arbitrary wavelength λ varies depending on a display color of the pixel. Sandwiched between a first substrate on which a large number of pixels of different display colors are arranged, a second substrate arranged to face the substrate, and the first substrate and the second substrate Comprising a liquid crystal layer and a display unit comprising a plurality of pixels having different display colors,
A liquid crystal display device, wherein a refractive index anisotropy Δn (λ) of the liquid crystal layer at an arbitrary wavelength λ varies depending on a display color of the pixel. In claim 1,
For the first liquid crystal layer applied to the first pixel having the display color of the central light wavelength λ ₁ and the second liquid crystal layer applied to the second pixel having the other display color,
The refractive index anisotropy at the wavelength λ ₁ of the first liquid crystal layer is Δn ₁ (λ ₁ ), the refractive index anisotropy at the wavelength λ ₁ of the second liquid crystal layer is Δn ₂ (λ ₁ ), and the thickness of the liquid crystal layer is d
sin ² (π · d · Δn ₁ (λ ₁ ) · / λ ₁ )> sin ² (π · d · Δn ₂ (λ ₁ ) / λ ₁ )
The liquid crystal display device characterized by satisfy | filling. In claim 2,
A liquid crystal display device comprising a partition wall that partitions the pixels having different display colors. In claim 2,
A liquid crystal display device having a first partition wall that partitions pixels having different display colors and a second partition wall that partitions one or more pixels having the same display color . In claim 4 or 5,
A liquid crystal display device, wherein a height of the partition wall and a thickness value of the liquid crystal layer are the same. In claim 4 or 5,
A liquid crystal display device, wherein a height of the partition wall is larger than a thickness of the liquid crystal layer. In claim 4 or 5,
A liquid crystal display device, wherein the partition wall is made of resin. Forming a plurality of pixels composed of a plurality of pixels for displaying different colors respectively on a first substrate,
Applying a liquid crystal having different birefringence refractive index anisotropy for each different display color for each corresponding pixel on the first substrate;
Disposing a second substrate opposite to the first substrate and sealing the liquid crystal;
A method of manufacturing a liquid crystal display device comprising: In claim 9,
The liquid crystal is applied by an ink jet method.

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