JPH09211440A - Liquid crystal display - Google Patents

Abstract

(57) Abstract: A liquid crystal display panel is provided in which the display quality of the liquid crystal display panel is improved by making the gap length of the liquid crystal layer in the peripheral portion of the liquid crystal display panel uniform. SOLUTION: A pair of electrode substrates (100, 110),
Liquid crystal layer (10) injected and sealed between the pair of electrode substrates
A liquid crystal display device comprising a liquid crystal panel having: a liquid crystal display panel, wherein the liquid crystal display panel has a lighting region (S1) and a non-lighting region (S2) formed around the lighting region, A dummy color filter (34a) of one color is provided in the non-lighted area of one of the pair of electrode substrates (100).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device, and more particularly to a liquid crystal display device having improved display quality.

[0002]

2. Description of the Related Art FIG. 5 shows a conventional color STN (Super).
FIG. 2 is a perspective view showing a schematic configuration of a liquid crystal display panel used in a simple matrix type liquid crystal display device of an r Twisted Nematic) system.

FIG. 6 is a sectional view showing a schematic sectional structure of the liquid crystal display panel shown in FIG. 5 taken along the line BB 'in the figure.

As shown in FIG. 5 or FIG. 6, in a liquid crystal display panel used in a conventional color STN type simple matrix type liquid crystal display device, the liquid crystal layer 10 is used as a reference on the glass substrate 1 side. Band-shaped transparent conductive film (ITO)
A plurality of segment electrodes 13 made of a transparent conductive film (ITO) are formed on the glass substrate 2 side.

A plurality of segment electrodes 13 and an alignment film 7 are sequentially laminated inside the glass substrate 1 (on the side of the liquid crystal layer 10), and a color filter (4a) is formed on the inside of the glass substrate 2 (on the side of the liquid crystal layer 10). , 4b, 4c), the light-shielding film 3, the protective film 5, the plurality of common electrodes 14, and the alignment film 6 are sequentially laminated.

On the outside of the glass substrate 1, a polarizing plate 1 is provided.
1 and a retardation plate 15 are formed, and a polarizing plate 12 is formed outside the glass substrate 2.

The common electrode 14 and the segment electrode 13 shown in FIG. 6 are orthogonal to each other, and the segment electrode 13 is a segment electrode for R (red), G (green) and B (blue), respectively. 13a, 13b, 13c), the common electrode 14 and the segment electrode (13
The intersection with a, 13b, 13c) constitutes one pixel.

Color filters (4a, 4b, 4)
c), the lattice-shaped light-shielding film 3 is formed so as to surround the common electrode 1.
4 and between the segment electrodes 13.

Further, as shown in FIG. 6, the liquid crystal layer 10 is filled with a spacer 8 for keeping the thickness of the liquid crystal layer 10 uniform.

As shown in FIG. 5, in the conventional liquid crystal display panel, a lighting area (S1) in which an image is actually displayed.
Then, it is divided into non-lighted areas (S2) which are formed on the outer periphery of the lighted area (S1) and in which no image is displayed.

The area surrounded by the alternate long and short dash line in FIG. 5 (S
3) is a display area when a frame (cover) on the frame is arranged, and represents an effective display area that is an area that the user actually sees.

As shown in FIG. 6, the common electrode substrate 100
In the non-lighted area (S2) of No. 3, dummy color filters (34a, 34b, 34c), the light shielding film 33 and a dummy electrode (not shown) are provided, and the segment electrode substrate 110 is also provided.
The dummy electrode 35 is provided in the non-lighting area (S2).

The non-lighting area (S2) is a lighting area (S2).
1) is a region provided to make the gap length (thickness of the liquid crystal layer 10) of the liquid crystal layer 10 in the peripheral portion uniform, and the non-lighting region (S2) has a size of 3 to 10 pixels. Have.

FIG. 7 is a diagram for explaining the positional relationship among the color filters, dummy color filters, and light-shielding film of the liquid crystal display panel shown in FIG. 6, and shows the lighting area (S1) in the area A of FIG. Color filters (4a, 4b,
4c), the dummy color filters (34a, 34b, 34c) and the light-shielding film (3, 33) in the non-lighted area (S2).
Shows the arrangement relationship of.

Lighting area of the common electrode substrate 100 (S1)
The light-shielding film 3 and the light-shielding film 33 in the non-lighting area (S2) are formed on the lattice, and the color filters (4a, 4b, 4c) and the non-lighting area (S2) in the lighting area (S1) of the common electrode substrate 100 are formed. ) Dummy color filter (34
a, 34b, 34c) have the same color in one direction (vertical direction in the example shown in FIG. 7) and R in the other direction (horizontal direction in the example shown in FIG. 7) orthogonal to the one direction. (Red) → G (green) → B (blue).

Here, the color filters (4a, 4b, 4c) in the lighting region (S1) and the non-lighting region (S2).
Dummy color filters (34a, 34b, 34c)
Is formed in a square shape on the inner side of the substrate end of the glass substrate 2 by about 3 mm.

The glass substrate 2 and the light shielding film (3, 3)
3), color filters (4a, 4b, 4c), dummy color filters (34a, 34b, 34c), protective film 5, electrodes (a plurality of common electrodes 14 and dummy electrodes),
The alignment film 6 and the polarizing plate 12 constitute the common electrode substrate 100, and the glass substrate 1, the electrodes (the plurality of segment electrodes 13 and the dummy electrodes 35), the alignment film 7, the polarizing plate 11,
The retardation plate 15 constitutes the segment electrode substrate 110.

The liquid crystal display panel shown in FIG. 5 or FIG.
For example, it is manufactured by the following steps.

(1) Step 1 On the glass substrate 2, the light shielding film (3, 33), the color filters (4a, 4b, 4c), and the dummy color filter (3).
4a, 34b, 34c), the protective film 5, the electrodes (common electrode 14 and dummy electrode), and the alignment film 6 are formed to manufacture the common electrode substrate 100.

Similarly, the electrodes (segment electrode 13 and dummy electrode 35) and the alignment film 7 are formed on the glass substrate 2 to manufacture the segment electrode substrate 110.

(2) Step 2 The sealing material 9 is formed around the common electrode substrate 100, and the spacer 8 is arranged inside the sealing material 9.

(3) Step 3 The pattern surfaces of the common electrode substrate 100 and the segment electrode substrate 110 are aligned with each other, and the outer surfaces of the common electrode substrate 100 and the segment electrode substrate 110 are heated under pressure to cure the sealing material 9. The common electrode substrate 100 and the segment electrode substrate 110 are adhesively sealed.

(4) Step 4 The liquid crystal layer 10 is injected from the opening of the sealing material, the opening is sealed with epoxy resin, and finally the glass substrate (1, 2).
The retardation plate 15 and the polarizing plates (14, 15) are attached to the above.

8 and 9 show the light-shielding film (3, 33) of the common electrode substrate 100, the color filters (4a, 4b, 4c), and the liquid crystal display panel shown in FIG. 5 or 6.
Dummy color filters (34a, 34b, 34c),
It is a figure which shows an example of the manufacturing process of the protective film 5 and an electrode (common electrode 14 and dummy electrode).

As shown in FIGS. 8 and 9, FIG. 5 or FIG.
The common electrode substrate 100 in the liquid crystal display panel shown in FIG.
Light shielding films (3, 33), color filters (4a, 4b,
4c), dummy color filters (34a, 34b, 3)
4c), the protective film 5, and the electrodes (common electrode 14 and dummy electrode) are formed by photolithography.

(11) Step 11 A resist film 51 made of a negative photosensitive resin film in which a black pigment is dispersed is applied on the glass substrate 2 ((a) of FIG. 8).

(12) Step 12 Ultraviolet rays 53 are irradiated onto the resist film 51 using a photomask 52 having a light shielding film pattern formed thereon to expose the resist film 51 to the light shielding film pattern (see FIG. 8). (B)).

(13) Step 13 The resist film 51 is developed to form a light shielding film (3, 33) on the glass substrate 2 ((c) of FIG. 8).

(14) Step 14 A resist film 54 made of a negative photosensitive resin film in which a red pigment is dispersed is applied on the glass substrate 2 on which the light shielding film (3, 33) is formed ((in FIG. 8). d)).

(15) Step 15 An ultraviolet ray 5 is applied using a photomask 55 having an R (red) filter pattern formed on the resist film 54.
3 to irradiate the resist film 54 with an R (red) filter pattern (FIG. 8E).

(16) Step 16 The resist film 54 is subjected to a development treatment, and R (red) is formed on the glass substrate 2 and between the light shielding films (3, 33).
And the R (red) dummy color filter 34a are formed ((f) in FIG. 9).

(17) Step 17 By the same step, a G (green) color filter 4 is provided on the glass substrate 2 and between the light shielding films (3, 33).
b, G (green) dummy color filters 34b, B
The (blue) color filter 4c and the B (blue) dummy color filter 34c are formed ((g) of FIG. 9).

(18) Step 18 The protective film 5 is formed ((h) in FIG. 9).

(19) Step 19 A transparent conductive film (ITO film) is formed on the protective film 5 by vapor deposition (or sputtering), and a resist film is applied thereon to form electrodes (common electrode 14 and dummy electrode). Exposure, development, and etching are performed using a photomask on which an electrode pattern is formed to form electrodes (common electrode 14 and dummy electrode) ((i) in FIG. 9).

In this case, the pigment dispersion type light-shielding film (3, 33), the color filters (4a, 4b, 4c) and the dummy color filters (34a, 34b, 34c), which are advantageous in low cost and high heat resistance, are used. To apply the resist film of
A rod coating method is used which enables efficient and highly resist-saving coating of a resist film.

FIG. 10 is a view for explaining a method of applying a resist film by the rod coating method.
0 (a) is a cross-sectional view showing the main part of the rod coating method, and FIG. 10 (b) is a view showing the outline of the coating method.

As shown in FIG. 10, in the rod coating method, the glass substrate 1 is sandwiched between the rod bar 70 around which the wire 73 is wound and the holding roller 71, and the rod bar 70 and the holding roller 71 are rotated to rotate the glass substrate 2. In this method, a resist film 72 is applied on top.

[0038]

FIG. 11 shows a protective film 5 of the liquid crystal display panel shown in FIG. 6 or 7, color filters (4a, 4b, 4c) and dummy color filters (34).
(a, 34b, 34c) and the light-shielding film (3, 33) are arranged in more detail.

In the color liquid crystal display panel shown in FIG. 6 or 7, color filters (4a, 4b, 4c) and dummy color filters (34a, 34b, 34c) are provided on the light shielding film (3, 33). When formed, the light shielding film (3, 33) is overlapped with the color filters (4a, 4b, 4c) and the dummy color filters (34a, 34b, 34c) for reasons such as light leakage prevention. .

Therefore, as shown in FIG. 11, the light shielding films (3, 33) and the color filters (4a, 4b, 4c).
And dummy color filters (34a, 34b, 34)
c) and the color filter (4a,
4b, 4c) and the dummy color filter (34a, 34b, 34c) only.
This causes the step 25 to be flattened by the protective film 5.

However, in general, for example, FIG.
Alternatively, the film thicknesses of the color filters (4a, 4b, 4c) and the dummy color filters (34a, 34b, 34c) formed by the method shown in FIG. 9 are R (red), G
(Green), B (blue) due to the difference in the material of each pigment,
Different for each color filter of R (red), G (green), and B (blue).

Further, when the color filters of R (red), G (green), and B (blue) are formed by photolithography, for example, the resist film is applied when the resist film is applied by the rod coating method. R (red), G (green), B (blue) due to variations in quantity
The thickness of each color filter (4a, 4b, 4c) also varies.

Therefore, the distance (height) of the step 25 from the glass substrate 2 is different for each step 25, that is, the distance (height) from the glass substrate 2 varies for each step 25, and The flatness of the filters (4a, 4b, 4c) and the dummy color filters (34a, 34b, 34c) is deteriorated.

Therefore, the color filters (4) having different distances (heights) from the glass substrate 2 are formed.
a, 4b, 4c) and a dummy color filter (34
a), 34b, 34c), even if each step 25 is flattened by the protective film 5, the STN (Super
It is difficult to obtain the flatness of 0.05 μm or less, which is required in the Twisted Nematic) type liquid crystal,
Unevenness 27 occurs on the surface of the protective film 5.

Unevenness 27 generated on the surface of the protective film 5
Is the common electrode substrate 100 and the segment electrode substrate 110.
This causes variations in the gap length of the liquid crystal layer 10 that is injected and sealed between and.

The light transmittance of the STN type liquid crystal display panel depends on the thickness of the liquid crystal layer 10, that is,
Due to the variation in the gap length of the liquid crystal layer 10, the liquid crystal layer 1
Since the threshold voltage of 0 is different, there is a problem that display unevenness such as color unevenness occurs on the display screen of the liquid crystal display panel and the display quality of the color liquid crystal display panel is deteriorated.

Particularly, the non-lighted area (S
2) Dummy color filters (34a, 3) formed in
4b, 34c) deteriorates in flatness, and a non-lighting area (S2)
When the unevenness 27 occurs on the surface of the protective film 5 of No. 3, the gap length of the liquid crystal layer 10 in the lighting region (S1) of the liquid crystal display panel becomes non-uniform, and color unevenness or the like occurs in the peripheral portion of the lighting region (S1) of the liquid crystal display panel. There is a problem in that the display unevenness occurs and the display quality of the liquid crystal display panel is significantly impaired.

The present invention has been made to solve the above-mentioned problems of the prior art, and an object of the present invention is to make uniform the gap length of the liquid crystal layer in the peripheral portion of the liquid crystal display panel in the liquid crystal display device. Thus, it is to provide a technique capable of improving the display quality of a liquid crystal display panel.

The above and other objects and novel features of the present invention will become apparent from the description of this specification and the accompanying drawings.

[0050]

SUMMARY OF THE INVENTION Among the inventions disclosed in the present application, the outline of a representative one will be briefly described.
It is as follows.

(1) A liquid crystal display device comprising a liquid crystal panel having a pair of electrode substrates and a liquid crystal layer injected and sealed between the pair of electrode substrates, wherein the liquid crystal display panel has a lighting region. In a liquid crystal display device having a non-lighting area formed on the outer periphery of the lighting area, a dummy color filter of one color is provided in the non-lighting area of one of the pair of electrode substrates. And

According to the above means, one of the pair of electrode substrates forming the liquid crystal display panel is provided in the non-lighted region of one of the electrode substrates.
Since a dummy color filter composed of color filters is provided to improve the flatness of the dummy color filter in the non-lighted area of the liquid crystal display panel, the gap of the liquid crystal layer around the lighted area of the liquid crystal display panel is improved. The length can be made uniform, which makes it possible to improve the display quality in the peripheral portion of the lighting region of the liquid crystal display panel.

[0053]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention in which the present invention is applied to a color STN type simple matrix type liquid crystal display device will be described in detail with reference to the drawings.

In all the drawings for explaining the embodiments of the invention, components having the same function are designated by the same reference numeral, and the repeated description thereof will be omitted.

A schematic structure of a liquid crystal display panel used in a color STN type simple matrix type liquid crystal display device according to an embodiment of the present invention is the same as the conventional liquid crystal display panel shown in FIG. .

FIG. 1 is a sectional view showing a schematic sectional structure of a liquid crystal display panel used in a color STN type simple matrix type liquid crystal display device according to an embodiment of the present invention.

FIG. 2 is a diagram for explaining the positional relationship between the color filters in the lighting region (S1), the dummy color filters in the non-lighting region (S2) and the light shielding film of the liquid crystal display panel shown in FIG.

FIG. 1 is a sectional view showing a schematic sectional structure of the liquid crystal display panel according to the embodiment of the present invention taken along the same cutting line as the line BB ′ in FIG. 5, and FIG. Arrangement of a color filter in a lighting region (S1), a dummy color filter in a non-lighting region (S2), and a light-shielding film in the same region as the region A in FIG. 5 in the liquid crystal display panel according to the embodiment of the present invention. It shows the relationship.

The liquid crystal display panel of the embodiment of the present invention is
This is different from the conventional liquid crystal display panel shown in FIG. 5 in that a dummy color filter 34a for one color of R (red) is formed in the non-lighting area (S2) of the common electrode substrate 100.

That is, in the liquid crystal display panel of the embodiment of the present invention, as shown in FIG. 1 or 2, in the non-lighted area (S2) of the common electrode substrate 100, one color of R (red) dummy is used. Color filter 34a is formed, and in the lighting region (S1) of the common electrode substrate 100, three color filters (4a, 4b, 4c) of R (red), G (green), and B (blue). Is formed, and this R (red), G
(Green), B (blue) three color filters (4a,
4b and 4c) have the same color in one direction (vertical direction in the example shown in FIG. 7) and R (red color in the other direction (horizontal direction in the example shown in FIG. 7) orthogonal to one direction). ) → G (green) → B
They are formed in the order of (blue).

Therefore, in the liquid crystal display panel according to the embodiment of the present invention, the inside of the glass substrate 2 (the liquid crystal layer 10 side).
In addition, the color filters (4a, 4b, 4c), the dummy color filter 34a and the light shielding film 3, the protective film 5, the electrodes (the plurality of common electrodes 14 and the dummy electrodes), the alignment film 6
And are sequentially stacked.

The inside of the glass substrate 1 (the liquid crystal layer 10)
On the side), the electrodes (the plurality of segment electrodes 13 and the dummy electrodes 35) and the alignment film 7 are provided on the same side as the conventional liquid crystal display panel.
Are sequentially laminated, and a polarizing plate 11 and a retardation plate 15 are formed on the outside of the glass substrate 1, and the glass substrate 2
A polarizing plate 12 is formed on the outer side of the.

Also in the liquid crystal display panel according to the embodiment of the present invention, the glass substrate 2, the light shielding film (3, 33), the color filters (4a, 4b, 4c), the dummy color filter 34a, the protective film 5, the electrode. The common electrode 14 and the dummy electrode, the alignment film 6, and the polarizing plate 12 constitute the common electrode substrate 100, and the glass substrate 1, the electrodes (the plurality of segment electrodes 13 and the dummy electrodes 35), the alignment film 7,
The polarizing plate 11 and the retardation plate 15 are the segment electrode substrate 11
0.

As described above, in the liquid crystal display panel according to the embodiment of the present invention, one color R (red) dummy color filter 34a is formed in the non-lighting region (S2) of the common electrode substrate 100. Therefore, it is possible to make the distances (heights) of the steps 25 generated in the dummy color filter 34a from the glass substrate 2 substantially the same.

Further, variation in the film thickness of the dummy color filter 34a caused by variation in the coating amount of the resist film when forming the dummy color filter 34a can be reduced as compared with the conventional liquid crystal display panel. It will be possible.

In this case, the variation in the film thickness of the dummy color filters is caused by the color filters (4a, 4b, 4).
In the manufacturing process of c), it is possible to further reduce the variation in the film thickness of the dummy color filter by using the color filter in which the variation in the coating amount of the resist film is small.

Therefore, in the liquid crystal display panel of the embodiment of the present invention, the flatness of the dummy color filter formed in the non-lighting area (S2) is improved, and the unevenness 27 generated on the surface of the protective film 5 is improved. Is small, that is, the protective film 5
Of the liquid crystal display panel can be improved, so that the gap length of the liquid crystal layer 10 in the peripheral portion of the lighting region (S1) of the liquid crystal display panel is made uniform and the lighting region (S1) of the liquid crystal display panel is improved.
The display quality of the liquid crystal display panel can be improved by suppressing the occurrence of display unevenness such as color unevenness caused by the variation in the gap length of the liquid crystal layer 10 in the peripheral portion of 1).

Further, in recent years, the frame of the liquid crystal display panel has become narrower, and it has become essential to improve the flatness of the dummy color filter formed in the non-lighting area (S2). In the liquid crystal display panel of this form, since the flatness of the dummy color filter in the non-lighting area (S2) can be improved, the liquid crystal display panel can be easily narrowed.

In the liquid crystal display panel of the embodiment of the present invention,
The color filters (4a, 4b, 4c, 34a) can be formed by, for example, the photolithography shown in FIG. 8 or FIG.

In this case, it is necessary to use the photomask having the color filter pattern shown in FIG. 3 or 4 as the photomask 55 shown in FIG.

3 and 4 show filter patterns of a photomask used in the manufacturing process of the color filters (4a, 4b, 4c) and the dummy color filter 34a of the liquid crystal display panel according to the embodiment of the present invention. It is a schematic diagram which shows.

In FIGS. 3 and 4, reference numerals 55a and 55b are photomasks, 61 is a light transmitting portion that transmits ultraviolet rays, and 62 is a light shielding portion that does not transmit ultraviolet rays.

Using the photomask 55a shown in FIG.
R (red) color filters 4a and R (red) dummy color filters 34a are formed in the lighting region (S1) and the non-lighting region (2) of the common electrode substrate 100,
Using the photomask 55b shown in FIG. 4, the G (green) color filter 4b and the B (blue) color filter 4c are formed in the lighting region (S1) of the common electrode substrate 100.

In the liquid crystal display panel shown in FIG. 1 or 2, the common electrode 14 or the segment electrode 1
It is also possible to divide 3 into two, for example, a vertical direction or a horizontal direction. Further, in the embodiment of the present invention, the present invention is applied to the color S
The case where the present invention is applied to a liquid crystal display panel of a TN type simple matrix type liquid crystal display device has been described.
It is needless to say that the present invention can also be applied to a liquid crystal display panel of a Transistor type active matrix liquid crystal display device.

As described above, the present invention has been specifically described based on the embodiments of the present invention. However, the present invention is not limited to the embodiments of the present invention, and various modifications may be made without departing from the gist of the present invention. It goes without saying that you get it.

[0076]

The effects obtained by typical ones of the inventions disclosed in the present application will be briefly described as follows.

(1) According to the present invention, in the liquid crystal display device, since the flatness of the dummy color filter formed in the non-lighted area of the liquid crystal display panel can be improved, the periphery of the lighted area of the liquid crystal display panel can be improved. It is possible to make uniform the gap length of the liquid crystal layer of the liquid crystal display panel and suppress the occurrence of display unevenness such as color unevenness caused by the variation of the gap length of the liquid crystal layer in the peripheral portion of the lighting region of the liquid crystal display panel.

(2) According to the present invention, in the liquid crystal display device, since the flatness of the dummy color filter formed in the non-lighted area of the liquid crystal display panel can be improved, the liquid crystal display panel can be easily made into a narrow frame. Can be converted.

(3) According to the present invention, the display quality of the liquid crystal display panel can be improved in the liquid crystal display device.

[Brief description of drawings]

FIG. 1 is a color ST that is an embodiment of the present invention.
FIG. 3 is a cross-sectional view showing a schematic cross-sectional structure of a liquid crystal display panel used in an N (Super Twisted Nematic) type simple matrix liquid crystal display device.

FIG. 2 is a lighting region (S1) of the liquid crystal display panel shown in FIG.
FIG. 6 is a diagram for explaining the arrangement relationship of the color filter of FIG. 5, the dummy color filter of the non-lighting area (S2), and the light shielding film.

FIG. 3 is a schematic diagram showing a filter pattern of a photomask used in a color filter manufacturing process of the liquid crystal display panel according to the embodiment of the present invention.

FIG. 4 is a schematic view showing a filter pattern of a photomask used in a color filter manufacturing process of the liquid crystal display panel according to the embodiment of the present invention.

FIG. 5 is a perspective view showing a schematic configuration of a liquid crystal display panel used in a conventional color STN type simple matrix type liquid crystal display device.

6 is a sectional view showing a schematic sectional structure of the liquid crystal display panel shown in FIG. 5 taken along the line BB ′ in the figure.

7 is a color filter of the liquid crystal display panel shown in FIG.
It is a figure for demonstrating the arrangement | positioning relationship of a dummy color filter and a light shielding film.

8 is a diagram showing an example of a manufacturing process of a light-shielding film, a color filter, a dummy color filter, a protective film, and an electrode of the common electrode substrate in the liquid crystal display panel shown in FIG. 5 or FIG.

9 is a diagram showing an example of a manufacturing process of a light-shielding film, a color filter, a dummy color filter, a protective film, and an electrode of a common electrode substrate in the liquid crystal display panel shown in FIG. 5 or FIG.

FIG. 10 is a diagram for explaining a method of applying a resist film by a rod coating method.

11 is a diagram for explaining in more detail the positional relationship between the protective film, the color filter, the dummy color filter, and the light shielding film of the liquid crystal display panel shown in FIG. 6 or FIG.

[Explanation of symbols]

1, 2 ... Glass substrate, 3, 33 ... Light-shielding film, 4a, 4b,
4c ... R (red), G (green), B (blue) color filters, 5 ... Protective film, 6, 7 ... Alignment film, 8 ... Spacer,
9 sealing material, 10 liquid crystal layer, 11, 12 polarizing plate, 1
3 ... Segment electrode, 14 ... Common electrode, 15 ... Retardation plate, 25 ... Step, 27 ... Unevenness, 34a, 34b, 34c
... Dummy color filters, 51, 54, 72 ... Resist films, 52, 55, 55a, 55b ... Photomask, 5
3 ... Ultraviolet ray, 70 ... Rod bar, 71 ... Holding roller, 7
3 ... Wire, 100 ... Common electrode substrate, 110 ... Segment electrode substrate.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Noboru Hoshino 3300 Hayano, Mobara-shi, Chiba Hitachi, Ltd. Electronic Device Division

Claims (1)

[Claims] 1. A liquid crystal display device comprising a liquid crystal panel having a pair of electrode substrates and a liquid crystal layer injected and sealed between the pair of electrode substrates, wherein the liquid crystal display panel comprises a lighting region, In a liquid crystal display device having a non-lighting area formed on the outer periphery of a lighting area, a dummy color filter of one color is provided in the non-lighting area of one of the pair of electrode substrates. Liquid crystal display device.