JP2002365638A - Liquid crystal display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid crystal display device wherein the margin of the precision for sticking a pair of substrates to each other is expanded and the manufacturing yield can be enhanced and which has satisfactory display quality and to provide a manufacturing method for the liquid crystal display device. SOLUTION: An array substrate 100 has switching elements 121 formed on an insulation substrate 11, an insulating film 24 formed covering the switching elements 121 and pixel electrodes 151 disposed on the insulating film 24 in every pixel and connected to the respective switching elements 121 through respective contact holes 26 formed in the insulating film. In one pixel, at least two protruding parts 140 each formed in a projecting shape are disposed at an alignment dividing part 130 for aligning liquid crystal molecules 310 in a plurality of directions different from each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a liquid crystal display device, and more particularly, to a liquid crystal display device having a multi-domain structure.

[0002]

2. Description of the Related Art Liquid crystal display devices have features such as light weight, thin shape, and low power consumption.
It is applied to various fields such as television. In particular, a liquid crystal display device using a thin film transistor, that is, a TFT, is used for a monitor for displaying data including a lot of information such as a portable television and a computer because of its responsiveness.

In recent years, with an increase in the amount of information, an improvement in the definition and display speed of an image has been demanded. The improvement in definition has been dealt with by making the array structure of the array substrate on which the TFTs are arranged finer. On the other hand, in a liquid crystal layer that performs light switching, the response speed of a liquid crystal material is required to be two to several tens of times faster than that of a current mode because the operation speed per unit time is shortened with the miniaturization of pixels. Is done.

[0004] As a liquid crystal mode satisfying these requirements,
VAN (Vertical Aligned Nema)
tic) method is being studied.

In this VAN type alignment mode, a faster response speed than that of the conventional twisted nematic type (TN) mode can be obtained, and the rubbing alignment processing, which has been concerned about the occurrence of defects such as electrostatic breakdown due to the adoption of vertical alignment, has been feared. In recent years, it has attracted attention because the process can be eliminated.

In the VAN type alignment mode, it is easy to design a compensation for a viewing angle, and a wide viewing angle can be obtained by employing a multi-domain system in which a liquid crystal layer is divided into a plurality of domains having different tilt directions of liquid crystal molecules. Obtainable. In this case, in order to control the alignment of the liquid crystal molecules, for example, notches or protrusions are formed on both of the pair of substrates.

For example, an active matrix type color liquid crystal display device is configured by sandwiching a liquid crystal layer between an array substrate having pixel electrodes and a counter substrate having counter electrodes. A color filter layer composed of a colored resin layer colored in three primary colors is disposed on either the array substrate or the counter substrate. A spacer is provided between these two substrates to keep the distance between the pixel electrode and the counter electrode constant. The pair of substrates is attached to each other with an adhesive printed around the substrates except for the liquid crystal injection port.

[0008]

However, in the above-mentioned multi-domain type VAN type alignment mode liquid crystal display device, after forming a notch or a projection on each of the two substrates, the two substrates are arranged in a predetermined arrangement. If the substrates are not attached to each other, the areas of the domains for compensating for the viewing angle may differ greatly from each other. For this reason, there is a possibility that a problem such as generation of display unevenness or reduction in transmittance may occur.

[0009] Further, since the margin of bonding accuracy of the pair of substrates is small, the production yield may be reduced.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and has as its object to increase the manufacturing yield by expanding the margin of bonding accuracy of a pair of substrates, and to improve the display yield. An object of the present invention is to provide a high-quality liquid crystal display device.

[0011]

According to a first aspect of the present invention, there is provided a liquid crystal display device comprising: a switching element formed on an insulating substrate; An array substrate comprising: a formed insulating film; a pixel electrode disposed on the insulating film for each pixel; and a pixel electrode connected to the switching element via a contact hole formed in the insulating film. A liquid crystal display device comprising: a counter substrate having a counter electrode disposed to face, and a liquid crystal composition including liquid crystal molecules disposed between the array substrate and the counter substrate; and in one pixel, At least two protrusions formed in a convex shape are arranged at alignment division sites for aligning the liquid crystal molecules in a plurality of different directions.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the liquid crystal display device of the present invention will be described below with reference to the drawings.

A liquid crystal display device of the present invention, for example, an active matrix type liquid crystal display device has a liquid crystal display panel 10.

That is, as shown in FIG. 1, the liquid crystal display panel 10 includes an array substrate 100 and the array substrate 10.
0 and the array substrate 10
Liquid crystal composition 30 disposed between the first substrate 0 and the opposite substrate 200
0. In such a liquid crystal display panel 10, the display area 102 for displaying an image is
00 and the counter substrate 200 are formed in a region surrounded by the outer edge seal member 106 for bonding the counter substrate 200 to the counter substrate 200. The peripheral area 104 is arranged along the outer periphery of the display area 102 and has a light-shielding area formed in a frame shape.

In the display area 102, as shown in FIGS. 1 and 2, the array substrate 100 includes m × n pixel electrodes 151 arranged in a matrix,
Scanning corresponding to m scanning lines Y formed along one row direction, n signal lines X formed along the column direction of these pixel electrodes 151, and m × n pixel electrodes 151. M × n thin film transistors, ie, pixels T, arranged as switching elements in the vicinity of the intersection of line Y and signal line X
FT121 is provided.

In the peripheral region 104, the array substrate 100 has a scanning line driving circuit 18 for driving m scanning lines Y, a signal line driving circuit 19 for driving n signal lines X, and the like. .

As shown in FIG. 1, the liquid crystal capacitance CL is formed by the pixel electrode 151, the counter electrode 204, and the liquid crystal layer 300 sandwiched between these electrodes. The auxiliary capacitance Cs is formed electrically in parallel with the liquid crystal capacitance CL. The auxiliary capacitance Cs is formed by a pair of electrodes disposed opposite each other via an insulating film, that is, an auxiliary capacitance electrode 61 having the same potential as the pixel electrode 151 and an auxiliary capacitance line 52 set to a predetermined potential. .

As shown in FIG. 3, the liquid crystal display device includes a liquid crystal composition 30 between an array substrate 100 and a counter substrate 200.
A transmission type liquid crystal display panel 10 having a “0” pinched therebetween is provided.

Array substrate 100 of liquid crystal display panel 10
In the display area 102, a switching element formed corresponding to a plurality of pixels arranged in a matrix on the transparent insulating substrate 11 such as a glass substrate, that is, a display area 102 including a pixel TFT 121 and a pixel TFT 121. Color filter layer 24 formed to cover
(R, G, B), color filter layer 24 (R, G, B)
The pixel electrodes 151 arranged for each pixel thereon, and the plurality of columnar spacers 31 formed on the color filter layer 24 (FIG.
And an alignment film 13A formed so as to cover the entirety of the plurality of pixel electrodes 151.

The color filter layer 24 has a thickness of, for example, about 3.0.
It has a thickness of μm, is colored green (G), blue (B), and red (R), and is arranged for each pixel. The color filter layers 24 are formed of three colored resin layers that transmit light of each color component of green, blue, and red, respectively.

The pixel electrode 151 is formed of ITO (Indium Tin Oxide) formed on the color filter layers 24G, 24B, and 24R assigned to them.
And the like, and are connected to the pixel TFTs 121 through through holes 26 penetrating the color filter layer 24.

Each pixel TFT 121 is connected to a scanning line formed along a row of the pixel electrodes 151 and a signal line formed along a column of the pixel electrodes 151. A voltage is applied to the pixel electrode.

As shown in FIG. 4 in more detail, the array substrate 100 includes a scanning line Y formed along the row of the pixel electrodes 151 and a signal line X formed along the column of the pixel electrodes 151. And a pixel TFT 121 disposed near the intersection of the scanning line Y and the signal line X corresponding to the pixel electrode 151.

Further, the array substrate 100 includes a liquid crystal capacitor C
A storage capacitor electrode 61 having the same potential as the pixel electrode 151 disposed opposite to the pixel electrode 151 via the gate insulating film 62 to form a storage capacitor CS electrically parallel to L, and a storage capacitor line 52 set to a predetermined potential And

The signal line X is disposed so as to be substantially orthogonal to the scanning line Y and the auxiliary capacitance line 52 via the interlayer insulating film 76. The auxiliary capacitance line 52 is formed of the same material in the same layer as the scanning line Y, and is formed substantially parallel to the scanning line Y. A part of the auxiliary capacitance line 52 is arranged to face the auxiliary capacitance electrode 61 via the gate insulating film 62. This auxiliary capacitance electrode 61 is formed of an impurity-doped polysilicon film.

The wiring portions such as the signal lines X, the scanning lines Y, and the auxiliary capacitance lines 52 are formed of a light-shielding low-resistance material such as aluminum or molybdenum-tungsten. In this embodiment, the scanning lines Y and the auxiliary capacitance lines 52 are formed of molybdenum-tungsten, and the signal lines X are mainly formed of aluminum.

The pixel TFT 121 has a semiconductor layer 11 formed of the same polysilicon film as the auxiliary capacitance electrode 61.
Two. The semiconductor layer 112 is formed on the glass substrate 1
The drain region 112 is formed on the undercoating layer 60 disposed on the first region 1 by doping impurities on both sides of the channel region 112C.
D and a source region 112S. This pixel TF
T121 corresponds to the semiconductor layer 112 via the gate insulating film 62.
Gate electrode 63 integrated with scanning line Y disposed opposite to
It has.

The drain electrode 88 of the pixel TFT 121 is
It is formed integrally with the signal line X, and is formed by being electrically connected to the drain region 112D of the semiconductor layer 112 through a contact hole 77 penetrating the gate insulating film 62 and the interlayer insulating film 76. The source electrode 89 of the pixel TFT 121 includes the gate insulating film 62 and the interlayer insulating film 7.
6 through a contact hole 78 penetrating through the semiconductor layer 1.
It is formed by being electrically connected to the twelve source regions 112S.

On the interlayer insulating film 76 of the array substrate 100, red (R), green (G), blue (B)
Color filter layers 24 (R, G,
B) is provided. Then, the color filter layer 24
A pixel electrode 151 is provided above. Pixel electrode 1
Reference numeral 51 is electrically connected to the source electrode 89 of the pixel TFT 121 via the through hole 26.

The auxiliary capacitance electrode 61 is electrically connected to a contact electrode 80 formed of the same material as the signal line X via a contact hole 79 penetrating the gate insulating film 62 and the interlayer insulating film 76. Pixel electrode 151
Are electrically connected to a contact electrode 80 via a contact hole 81 penetrating the color filter layer 24. Thereby, the source electrode 8 of the pixel TFT 121 is
9, the pixel electrode 30, and the auxiliary capacitance electrode 61 have the same potential.

The column spacer 31 is formed of black or transparent resin. For example, the columnar spacer 31
Is formed of a photosensitive carbonless black resin containing a pigment. This columnar spacer 31 has a size of about 5 μm.
m. This columnar spacer 31
In the display region 40, each color filter laminated on a light-shielding wiring portion (for example, a scanning line or an auxiliary capacitance line formed of a molybdenum-tungsten alloy film, a signal line formed of aluminum, or the like). Layer 24 (R,
G, B).

The alignment film 13A aligns the liquid crystal molecules 310 contained in the liquid crystal composition 300 in a direction substantially perpendicular to the array substrate 100 at a predetermined pretilt angle.

The counter substrate 120 has a counter electrode 22 formed on a transparent insulating substrate 21 such as a glass substrate, and an alignment film 13B covering the counter electrode 22.

The counter electrode 22 is formed of a light-transmissive conductive member such as ITO which is arranged to face the entire pixel electrode 151 on the array substrate 110 side. Alignment film 13
B aligns the liquid crystal molecules 310 included in the liquid crystal composition 300 in a direction substantially perpendicular to the opposing substrate 200 at a predetermined pretilt angle.

Array substrate 1 in liquid crystal display panel 10
A polarizing plate PL1 is provided on the surface of the counter substrate 200, and a polarizing plate PL2 is provided on the surface of the counter substrate 200.

As shown in FIGS. 2 and 3, the array substrate 100 includes liquid crystal molecules 310 within one pixel.
At least two convexly-shaped protrusions 1 arranged at the alignment division portion 130 for orienting the light-emitting elements in a plurality of directions.
40 is provided. Part of the pixel electrode 151 is arranged on the protrusion 140 arranged in the alignment division part 130.

In this embodiment, the protrusion 140
Is disposed on the array substrate 100 side,
It may be arranged on the 0 side. In this case, a part of the counter electrode 204 is arranged on the protrusion 140 arranged in the alignment division site 130.

The protrusion 140 is formed of an insulating material such as a transparent resin or a black resin. As shown in FIG. 3, for example, the color filter layer (insulating film) 24 (R, G, B) and the pixel electrode 151 are formed. It is located between. The protrusion 140 is formed of the same color resin as that of the color filter layer 24 (R, G, B).
G, B), or may be formed by laminating a plurality of colored resins.

For example, as shown in FIG. 2, the projections 140 are arranged substantially in parallel and close to each other in two rows at an alignment division portion 130 arranged substantially at the center of one pixel.
As shown in FIG. 3, it is formed to have a substantially triangular cross section. It is desirable that the height of the protrusion 140 be 0.5 μm or more in order to achieve a multi-domain structure. The adjacent distance between the plurality of protrusions 140 arranged in the alignment division portion 130 is, for example, 15 μm or less, and preferably 0.1 to 5 μm.

As described above, by arranging the plurality of protrusions 140 in parallel along the alignment division portion 130 in one pixel only on one substrate, for example, only the array substrate 100 side,
As shown in FIG. 2, a plurality of different domains, that is, a first domain DM1, a second domain DM2, a third domain DM3, and a fourth domain DM4 can be formed in the same pixel.

At this time, in the orientation division part 130,
By arranging at least two protrusions 140 in parallel, as shown in FIG.
It is possible to reduce the concentration of the electric field between the projections 04 on the protrusion 140. That is, it is possible to disperse the electric field toward each of the protrusions 140 by setting the adjacent distance between the adjacent protrusions 140 in the alignment division portion 130 to an appropriate distance.

Usually, in the vicinity of the alignment division portion 130, the alignment film 1 for controlling the behavior of the liquid crystal molecules 310 is formed.
The control by 3A and the control by the electric field between the pixel electrode 151 and the counter electrode 204 can coexist, which can cause the behavior of the liquid crystal molecules 310 to be degraded. It is possible to stably control molecules.

Accordingly, the viewing angle can be expanded, and the display performance can be improved.

Further, as compared with a structure in which a notch or a projection is provided on both of a pair of substrates, a margin of bonding accuracy of the two substrates can be expanded, and a manufacturing yield can be improved. Becomes Further, problems such as generation of display unevenness, reduction in transmittance, and reduction in aperture ratio can be solved, and display quality can be improved.

Next, a method of manufacturing the above-described liquid crystal display panel 10 will be described.

In the manufacturing process of the array substrate 100, first,
On the glass substrate 11 having a thickness of 0.7 mm, a silicon nitride film and a silicon oxide film are successively formed by the CVD method to form the undercoating layer 60 having a two-layer structure.

Subsequently, an amorphous silicon film is formed on the undercoating layer 60 by a CVD method or the like. Then, the amorphous silicon film is irradiated with an excimer laser beam and is annealed to be polycrystallized. Thereafter, the polycrystallized silicon film, that is, the polysilicon film 112 is patterned by a photolithography process to form a channel layer of the TFT 121 and to form the auxiliary capacitance electrode 61.

Subsequently, a silicon oxide film is formed to a thickness of about 0.15 μm on the entire surface by a CVD method to form a gate insulating film 62. Subsequently, tantalum (Ta), chromium (Cr), aluminum (Al), and molybdenum (M) are formed on the entire surface of the gate insulating film 62 by sputtering.
o), a simple substance such as tungsten (W), copper (Cu), or a laminated film thereof, or an alloy film thereof (Mo-W alloy film in this embodiment) is formed to a thickness of about 0.3 μm. And patterned into a predetermined shape by a photolithography process. As a result, various wirings such as the scanning line Y, the auxiliary capacitance line 52, and the gate electrode 63 integrated with the scanning line Y are formed.

Subsequently, using the gate electrode 63 as a mask,
Impurities are implanted into the polysilicon film 112 by an ion implantation method or an ion doping method. Thereby, the TFT 12
One drain region 112D and one source region 112S are formed. Then, the impurities are activated by annealing the entire substrate.

Subsequently, a silicon oxide film is formed on the entire surface by the CVD method, and an interlayer insulating film 76 is formed.

Subsequently, by a photolithography process,
Through the gate insulating film 62 and the interlayer insulating film 76, the TFT
The contact hole 77 reaching the drain region 112D of 121 and the contact hole 7 reaching the source region 112S
8 and a contact hole 79 reaching the auxiliary capacitance electrode 61
And form

Subsequently, Ta, Cr, Al, Mo, W, C are formed on the entire surface of the interlayer insulating film 76 by sputtering.
u or a laminated film thereof, or an alloy film thereof (a laminated film of Mo-Al in this embodiment) to a thickness of about 0.3 μm, and a predetermined thickness is formed by a photolithography process. Is patterned. As a result, the signal line X is formed, and T
The drain electrode 88 of the FT 121 is formed. At the same time, a contact electrode 80 that contacts the source electrode 89 of the TFT 121 and the auxiliary capacitance electrode 61 is formed.

Subsequently, a photosensitive resist (ultraviolet curable acrylic resin resist) in which a red pigment is dispersed is applied to the entire surface of the substrate by a spinner. And at 90 ° C
After drying for 0 minutes, the resist film is exposed at a wavelength of 365 nm with a light exposure of 200 mJ / cm ² through a photomask that irradiates a portion corresponding to a red pixel with light. Then, the resist film is developed with a 1 wt% aqueous solution of KOH for 20 seconds, and further washed with water.
Bake for 0 minutes. Thus, a red color filter layer 24R is formed.

Subsequently, by repeating the same steps, a green color filter layer 24G made of an ultraviolet-curable acrylic resin resist in which a green pigment is dispersed and an ultraviolet-curable acrylic resin resist in which a blue pigment is dispersed are formed. The blue color filter layer 24B is formed. In this way, red, green, and blue color filter layers 24 (R, G, B) having a film thickness of about 1.5 μm are formed.

In the process of forming these color filter layers 24, through holes (20 μm × 20 μm) 26 for contacting the switching elements 121 and the pixel electrodes 151 are formed.
Are also formed at the same time. Further, a contact hole 81 for contacting the pixel electrode 151 and the contact electrode 80 is also formed at the same time.

Subsequently, as shown in FIG. 5A, a black photosensitive resist (ultraviolet curable acrylic resin resist) 140 'is applied to the entire surface of the substrate by a spinner, and then dried at 90 ° C. for 10 minutes. . And (b) of FIG.
As shown in FIG. 2, this resist film 140 'is formed with a photomask of 365 nm through a photomask in which light is irradiated to the portions corresponding to the light-shielding regions around the display region in the alignment division portion 130 of each pixel in the display region. 300 mJ / c in wavelength
exposed with an exposure amount of m ^2. Then, as shown in FIG. 5C, the resist film 140 'is developed with an alkaline aqueous solution having a pH of 11.5, and then further washed with water. Then, as shown in FIG. 5D, the remaining black resist film 140 ′ is melted by baking at 200 ° C. for 60 minutes. Thus, the protrusion 140 is formed of the black resin.

Subsequently, ITO is formed to a thickness of about 0.1 μm on the color filter layer 24 by a sputtering method, and is patterned into a predetermined pixel pattern by a photolithography process.
1 is formed.

Subsequently, a photosensitive acrylic transparent resin material is applied on the surface of the substrate to a thickness of about 5 μm by a spinner. After the resin material is dried at 90 ° C. for 10 minutes, it is exposed at a wavelength of 365 nm using a photomask having a predetermined pattern at an exposure amount of 100 mJ / cm ² . Then, the resin material is developed with an aqueous alkaline solution having a pH of 11.5 and baked at 200 ° C. for 60 minutes. Thereby, the columnar spacer 31 having a height of about 4.5 μm is formed.

Subsequently, an alignment film material such as polyimide is applied to the entire surface of the substrate and baked to form an alignment film 13A.

Thus, the array substrate 100 is manufactured.

On the other hand, in the manufacturing process of the counter substrate 200, first, an ITO film is formed by sputtering on a glass substrate 21 having a thickness of 0.7 mm, and the counter electrode 22 is formed by patterning. And the counter electrode 2
An alignment film material such as polyimide is applied to the entire surface of the transparent substrate 21 covering the transparent substrate 2 and baked to form an alignment film 13B.

Thus, the opposing substrate 200 is manufactured.

In the manufacturing process of the liquid crystal display panel 10, an outer edge sealing member 106, which is a thermosetting epoxy adhesive, is applied along the outer edge of the array substrate 100 so as to surround the liquid crystal accommodating space except for the liquid crystal inlet 32. Further, the array substrate 1
From 00, an electrode transfer material for applying a voltage to the counter electrode 200 is formed on the electrode transfer electrode around the outer edge seal member 106. Subsequently, the array substrate 100 and the opposing substrate 200 are arranged so that the alignment film 13A of the array substrate 100 and the alignment film 13B of the opposing substrate 200 face each other, and are heated to cure the outer edge seal member 106 so that both substrates are cured. Paste.

Subsequently, a liquid crystal composition 300 having a negative dielectric anisotropy is injected from the liquid crystal injection port 32, and the liquid crystal injection port 32 is sealed with an injection port sealing member 33 which is an ultraviolet curable epoxy adhesive. I do.

Subsequently, the array substrate 100 and the opposing substrate 2
Attach a polarizing plate to the outer surface of 00.

A liquid crystal display panel is manufactured by the above manufacturing method.

The multi-domain VAN-type alignment mode color liquid crystal display device manufactured as described above was able to display a high-quality image without display unevenness or roughness.

Next, another embodiment of the present invention will be described.

In this embodiment, as shown in FIGS. 6 and 7, the basic structure is substantially the same as that of the first embodiment. However, in one pixel, a pixel electrode 151 is partially formed. Has a cutout portion 145. In this embodiment, the notch 145 is located substantially at the center in one pixel,
It is formed between the plurality of protrusions 140 in the alignment division part 130.

As described above, by providing a plurality of protrusions 140 and cutouts 145 on one substrate, for example, only on the side of the array substrate 100, along the alignment division portion 130 in one pixel, as shown in FIG. In addition, a plurality of different domains can be formed in the same pixel. Thus, the viewing angle can be increased, and the display performance can be improved.

Further, as compared with a structure in which a notch or a projection is provided on both of a pair of substrates, a margin of bonding accuracy of the two substrates can be expanded, and a manufacturing yield can be improved. Becomes Further, problems such as generation of display unevenness, reduction in transmittance, and reduction in aperture ratio can be solved, and display quality can be improved.

A liquid crystal display device having the structure shown in FIG. 6 was fabricated, assembled into a liquid crystal module, and driven. As a result, it was possible to display an image with high image quality without display unevenness or roughness.

As described above, according to the present invention, a multi-domain VAN having a plurality of different domains in the same pixel is provided by providing an alignment control means such as a projection and a notch on only one substrate side. It is possible to provide a color liquid crystal display device of the type alignment mode. Also,
According to the present invention, it is possible to reduce the concentration of the electric field on the alignment division site, and it is possible to stably control the liquid crystal molecules contained in the liquid crystal composition.

Therefore, according to the present invention, the viewing angle can be increased and the display performance can be improved.

Further, according to the present invention, it is possible to extend the margin of the accuracy of bonding the two substrates, and it is possible to improve the production yield. Further, problems such as generation of display unevenness, reduction in transmittance, and reduction in aperture ratio can be solved, and display quality can be improved.

[0076]

As described above, according to the present invention, it is possible to improve the manufacturing yield by extending the margin of the bonding accuracy of a pair of substrates, and to improve the display quality. And a method for manufacturing the liquid crystal display device.

[Brief description of the drawings]

FIG. 1 is a diagram schematically showing a structure of a liquid crystal display panel applied to a liquid crystal display device of the present invention.

FIG. 2 is a plan view schematically showing a structure of an array substrate of the liquid crystal display panel shown in FIG.

FIG. 3 is a sectional view schematically showing a structure of a liquid crystal display device according to the embodiment of the present invention.

FIG. 4 is a sectional view schematically showing a structure of an array substrate constituting the liquid crystal display device shown in FIG.

FIGS. 5A to 5D are views for explaining a manufacturing process for forming a protrusion;

FIG. 6 is a plan view schematically showing a structure of an array substrate applied to a liquid crystal display device according to another embodiment of the present invention.

FIG. 7 is a sectional view schematically showing a structure of a liquid crystal display device according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Liquid crystal display panel 24 (R, G, B) ... Color filter layer 31 ... Columnar spacer 100 ... Array board 102 ... Display area 104 ... Peripheral area 106 ... Outer edge sealing member 121 ... Switching element 130 ... Orientation division | segmentation part 140 ... Projection Part 145 Notch 151 Pixel electrode 200 Counter substrate 204 Counter electrode 300 Liquid crystal composition 310 Liquid crystal molecules

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yasushi Kawada 1-9-9 Hara-cho, Fukaya-shi, Saitama Prefecture Inside the Toshiba Fukaya Plant (72) Inventor Takeshi Yamaguchi 1-9-1-2 Harara-cho, Fukaya-shi, Saitama shares Inside the Toshiba Fukaya Factory (72) Inventor Atsushi Manabe 1-9-9 Hara-cho, Fukaya-shi, Saitama Prefecture Inside The Toshiba Fukaya Factory (72) Inventor Natsuko Maya 1-9-1-2 Harara-cho, Fukaya-shi, Saitama Stock Company F-term in Toshiba Fukaya Plant (reference) 2H090 HB08Y HC05 HC06 HC15 JA02 JB02 JB11 LA02 LA04 LA09 LA15 MA10 MA15 2H091 FA02Y FA08X FA08Z FB07 GA01 GA08 GA13 LA16 LA30 2H092 GA29 JA24 JA34 JA41 JA46 JB61 KA04 MA30 MA01 MA29 PA03 PA08 PA11

Claims (7)

[Claims] A switching element formed on an insulating substrate, an insulating film formed over the switching element, and a contact hole formed on the insulating film for each pixel and formed in the insulating film. An array substrate having a pixel electrode connected to the switching element through a counter electrode; a counter substrate having a counter electrode disposed to face the array substrate; and a liquid crystal disposed between the array substrate and the counter substrate. A liquid crystal composition comprising a liquid crystal composition containing molecules, wherein at least two protrusions are formed in alignment divisions for aligning the liquid crystal molecules in a plurality of different directions within one pixel. The liquid crystal display device, wherein is disposed. 2. The liquid crystal display device according to claim 1, wherein the projection is arranged on the array substrate side, and a part of the pixel electrode is arranged on the projection. 3. The liquid crystal display device according to claim 1, wherein the protrusion is disposed on the counter substrate, and a part of the counter electrode is disposed on the protrusion. 4. The liquid crystal display device according to claim 1, wherein said projection is formed of an insulating material. 5. The liquid crystal display device according to claim 4, wherein said projection is a color filter layer. 6. The liquid crystal display device according to claim 1, wherein the pixel electrode has a cutout portion in which one part is cut out in one pixel. 7. The liquid crystal display device according to claim 6, wherein the notch is formed between the plurality of protrusions.