JP2002055349A - Liquid crystal display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid crystal display device which can prevent electric short circuit between a counter electrode and a pixel electrode by the spacer formed on the surface of a color filter. SOLUTION: The liquid crystal display device 40 has a first substrate 43 prepared by laminating a TFT circuit layer 1, insulating layer 2, pixel electrode 3 and alignment film 10 in this order on a transparent substrate 4, and a second substrate 44 prepared by laminating a color filter layer 5, spacer 19, counter electrode 6 and alignment film 11 in this order on a transparent substrate 7. The pixel electrode 3 has a through hole 3a in the region opposing the spacer 19.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a color liquid crystal display device having a pair of opposed substrates.

[0002]

2. Description of the Related Art A conventional liquid crystal display device has a pair of substrates facing each other, and the space between the substrates is kept constant by spacers. FIG. 10 is a sectional view schematically showing a conventional liquid crystal display device 42. As shown in FIG. The liquid crystal display device 42 shown in FIG.
Is, for example, an active matrix type liquid crystal display device, and has a first substrate 43 and a second substrate 44.

The first substrate 43 is formed by laminating a TFT circuit layer 1 including a thin film transistor (TFT) element, an insulating layer 2, a picture element electrode 3, and an alignment film 10 on a transparent substrate 4 in this order. You. The second substrate 44 is formed by stacking a color filter layer 5, a counter electrode 6, and an alignment film 11 on a transparent substrate 7 in this order. Two substrates 43,
Reference numeral 44 denotes a state in which the alignment films 10 and 11 face each other, a fixed substrate gap (cell gap) is maintained by the transparent spacer 9, and the substrates are bonded by a sealing material. 2
The liquid crystal 8 is filled between the substrates 43 and 44,
The liquid crystal injection port is sealed with a sealing material. Spacer 9
Are beads having a small particle size, and are dispersed on one of the substrates. Fibers and the like are used as spacers other than beads.

[0004]

In a configuration in which beads or fibers are used as spacers of a liquid crystal display device, it is very difficult to uniformly disperse the spacers. In particular,
For large substrates, the distribution of the spacers is non-uniform, which may result in reduced display contrast or uneven color.

When arranging the spacers by scattering, it is difficult to arrange the spacers at a specific position, and the spacers may be arranged in an effective picture element area directly related to display. When the transparent spacer is arranged in the effective picture element area, light leaks from the spacer itself, which lowers display quality and display contrast.

On the other hand, another prior art is disclosed in Japanese Patent Application Laid-Open No. 5-1969.
No. 46 is disclosed. In this conventional technique, the same resin layer as the resin layer forming the color filter layer is laminated as a spacer on the surface of the color filter, thereby maintaining the distance between the substrates. The spacer has a sufficient thickness by stacking resin layers, can be easily arranged at a predetermined position, and can easily impart light-shielding properties.

In this prior art, when a counter electrode is formed so as to cover a spacer composed of a plurality of resin layers and a color filter layer, a defect occurs in the alignment film due to, for example, foreign matter attached to the counter electrode or the spacer, and There is a possibility that the opposing electrode formed on the substrate and the pixel electrode on the other substrate come into contact with each other at the spacer portion, and may be electrically connected. When the picture element electrode and the opposing electrode conduct, a problem arises in that no voltage is applied to the liquid crystal.

An object of the present invention is to provide a liquid crystal display device capable of preventing an electric short circuit between a counter electrode and a pixel electrode due to a spacer formed on the surface of a color filter.

[0009]

According to the present invention, a liquid crystal layer is interposed between a pair of substrates which are arranged facing each other at a predetermined interval, and one of the pair of substrates is provided with a flat surface. A color filter layer composed of a plurality of resin layers, a spacer formed on the surface of the color filter layer, and a counter electrode covering the color filter layer and the spacer, and a pixel electrode on the other substrate In the liquid crystal display device, the spacer is arranged in a region of the other substrate facing the pixel electrode, and a portion of the pixel electrode facing the spacer or a counter electrode on the spacer is removed. Device.

When the one substrate and the other substrate are bonded together in a state where the counter electrode formed on the spacer and the pixel electrode face each other, for example, foreign matter adhering to the pixel electrode, the counter electrode, and the spacer is generated. There is a possibility that a defect occurs in the alignment film, the counter electrode and the pixel electrode come into contact with each other, and conduct electricity. When the pixel electrode and the counter electrode conduct, there is a problem that an electric short circuit occurs and no voltage is applied to the liquid crystal.

According to the present invention, the pixel electrode or the counter electrode in the region where the spacer is arranged is removed, so that contact between the pixel electrode and the counter electrode can be prevented, and Conduction with the electrode can be prevented.

Further, the picture element electrode according to the present invention is characterized in that the picture element electrode has a through hole or a notch at a portion facing the spacer.

According to the present invention, the picture element electrode has a cutout portion or a hole portion, and the spacer is arranged in a region facing the cutout portion or the hole portion of the picture element electrode. Therefore, the opposing electrode formed on the spacer and the pixel electrode can be prevented from opposing each other, and the contact between the pixel electrode and the opposing electrode can be prevented.

Since the pixel electrodes are formed in a matrix by a patterning step after film formation, the shape of a mask portion of a mask plate used in this patterning step is changed without adding a step. The conduction between the pixel electrode and the counter electrode can be prevented without increasing the manufacturing cost.

Further, according to the present invention, a liquid crystal layer is interposed between a pair of substrates arranged to face each other at a predetermined interval, and the liquid crystal layer is arranged in a plane on one of the pair of substrates. A color filter layer including a plurality of resin layers, a spacer formed on the surface of the color filter layer, and a counter electrode covering the color filter layer and the spacer, a liquid crystal display device including a pixel electrode on the other substrate, The spacer is arranged in a region facing the pixel electrode on the other substrate, and an electrical insulating film is interposed between the counter electrode formed on the spacer and the pixel electrode on the other substrate. A liquid crystal display device characterized by the following.

According to the present invention, the spacer is disposed in a region facing the picture element electrode on the other substrate, and an electric field is provided between the counter electrode formed on the spacer and the picture element electrode on the other substrate. Since the static insulating film is interposed, contact between the pixel electrode and the counter electrode can be prevented, and conduction can be prevented.

Further, the spacer according to the present invention is arranged in a region of the liquid crystal display device which does not transmit light.

According to the present invention, since the spacer is disposed in a region of the liquid crystal display device through which light does not pass, it is possible to prevent the aperture ratio of the liquid crystal display device from being reduced by the spacer, and to prevent the alignment film from being reduced by the spacer. The unevenness of the rubbing process can be hidden.

Further, the color filter layer of the present invention includes a red resin layer, a green resin layer and a blue resin layer, and the spacer has a structure in which these resin layers are formed on the surface of the color filter layer. It is characterized in that two layers are laminated, and three color resin layers are laminated including the resin layer constituting the color filter layer.

According to the present invention, the portions where the spacers are formed include the resin layers constituting the color filter layers, and the resin layers of three colors of red, green and blue are laminated, so that excellent light shielding is achieved. Has the property. Therefore, if the spacer is formed in a region that blocks incident light to an active element such as a thin film transistor (TFT) element, malfunction or unstable operation of the active element due to light can be prevented. In addition, if a spacer is formed in a region that blocks incident light to a wiring such as a gate wiring or a source wiring, reflection of light by the wiring can be prevented, and display quality of the liquid crystal display device can be improved. Further, the spacer can be formed simultaneously with the step of forming the color filter layer.

[0021]

FIG. 1 is a sectional view schematically showing a liquid crystal display device 40 according to an embodiment of the present invention. The liquid crystal display device 40 shown in FIG. 1 is, for example, an active matrix liquid crystal display device, and includes a first substrate 43 and a second substrate 43.
It has a substrate 44.

The first substrate 43 is formed on a transparent substrate 4 such as a glass substrate or a plastic substrate, and a TFT circuit layer 1 including a thin film transistor (TFT) element, a source electrode, a gate electrode, an auxiliary electrode, etc., an insulating layer 2, Elementary electrode 3,
And the alignment film 10 are laminated in this order. Second
The substrate 44 is formed by laminating a color filter layer 5, a columnar spacer 19, a counter electrode 6, and an alignment film 11 on a transparent substrate 7 in this order.

The color filter layer 5 is composed of a red filter 5a, a green filter 5b and a blue filter 5c, which are resin layers.

The spacer 19 has a blue resin layer 19b on the red filter 5a constituting the color filter layer 5.
And a green resin layer 19c in this order. The columnar spacer 19 protrudes from the surface of the color filter layer 5 and plays a role in maintaining a constant interval between the two substrates 43 and 44. The spacer 19 may have a structure in which a blue resin layer 19b is laminated on a green resin layer 19c.

Filter 5 Constituting Color Filter Layer 5
a, 5b, 5c and Resin Layer 1 Constituting Spacer 19
9b and 19c are made of, for example, a photosensitive resin which is cured by ultraviolet rays. Resin layer 19 constituting spacer 19
b, 19c have a thickness of, for example, 1 to 3 μm per layer, and are spacers 19 in which two resin layers 19b, 19c are stacked.
Has a thickness of 2 to 6 μm. In addition, each filter 5
The thickness of each of the resin layers 19b and 19c is equal to each other. The number of resin layers constituting the spacers 19 is not limited to two, and if one or more layers can be maintained, the substrate interval of 1 μm or more can be maintained.

The liquid crystal display device 40 shown in FIG. 1 has a structure in which a spacer 19 composed of a blue resin layer 19b and a green resin layer 19c is provided on a red filter 5a. A structure in which a spacer made of a red resin layer and a blue resin layer is provided, or a structure in which a spacer made of a red resin layer and a green resin layer are provided on the blue filter 5c may be used. Thus, the portion where the red resin layer, the green resin layer, and the blue resin layer are laminated has excellent light-shielding properties. The spacer 19 and the color filter layer 5
Is, for example, C (cyan), M (magenta), Y (yellow)
It may be composed of a colored resin layer.

FIG. 2 is a sectional view for explaining the TFT circuit layer 1 of the first substrate 43. On the first substrate 43, Ta, Al, Ti, M
A gate wiring 1b and a storage capacitor common wiring (Cs wiring) 1c made of a metal such as o are formed in a predetermined pattern.
On these, an insulating film 1f made of an inorganic material having excellent electrical insulation such as SiN _x , SiO _x is formed. Further, a part of the insulating film 1f formed on the gate wiring 1b includes n
A semiconductor layer 1g made of amorphous silicon or the like is formed, on which a source electrode 1h and a drain electrode 1i made of a metal such as Ta, Al, Ti, and Mo are formed. Further, a source wiring 1a connected to the source electrode 1h and a drain wiring 1e connected to the drain electrode 1i are formed. The drain wiring 1e is formed from over the drain electrode 1i to over the insulating film 1f over the Cs wiring 1c. The Cs wiring 1c is provided to suppress a change in the voltage applied to the liquid crystal due to a parasitic capacitance _CGD generated between the gate and the drain of the TFT element 1d.

An electrical insulating layer 2 made of an organic material is formed on the TFT circuit layer 1 thus formed, and a pixel electrode made of a transparent conductive film such as ITO (indium tin oxide) is formed thereon. 3 are formed in a matrix. In the insulating layer 2, a contact hole 2 a which is a through hole is provided with a Cs wiring 1.
c, and the pixel electrode 3 is in contact with the drain wiring 1e through the contact hole 2a.

The first substrate 43 and the second substrate 44 are bonded together by a sealing material so that the alignment films 10 and 11 face each other, and a constant substrate gap (cell gap) is maintained by the spacer 19. The space between the two substrates 43 and 44 is filled with, for example, a twisted nematic liquid crystal 8, and the liquid crystal injection port is sealed with a sealing material.

FIGS. 3 and 4 are plan views for explaining the first arrangement position of the spacer 19 in the liquid layer display device 40. FIG. FIG. 3 shows the color filter layer 5 and the spacer 19 formed on the second substrate 44, and FIG.
The picture element electrode 3 and the TFT circuit layer 1 of the first substrate 43 are shown. Also, in FIG. 4, the arrangement position of the spacer 19 when the substrates 44 and 43 are bonded together is indicated by a virtual line.

As shown in FIG. 3, a spacer 19 is formed on a blue resin layer 19b in the shape of a rectangular parallelepiped.
A rectangular parallelepiped green resin layer 19c, which is smaller in parallel to the substrate than the substrate, is formed by lamination and has a substantially pyramid shape.
In the second substrate 44, the spacer 19 thus configured
A counter electrode 6 is formed so as to cover and the color filter layer 5, and an alignment film 11 is formed on the counter electrode 6.

If the shape of the spacer 19 is gentle,
The alignment film 11 formed thereon also becomes gentle. The alignment film 11 is formed by stacking a liquid crystal material layer on the substrate 44 and performing a process called rubbing in which the surface is rubbed with a cloth or the like. When the alignment film 11 becomes gentle, the rubbing process is easily performed, and unevenness in the rubbing process can be reduced.

As shown in FIG. 4, a first substrate 43 is formed on a transparent substrate 4 as a TFT circuit layer 1 as source wirings 1a,
A gate wiring 1b, a Cs wiring 1c, a TFT element 1d, and the like are formed, and an insulating layer 2 and a pixel electrode 3 are formed thereon. In FIG. 4, the double line indicates the picture element electrode 3. The liquid crystal display device 40 is a liquid crystal display device having a high aperture ratio structure in which the picture element electrode 3 is formed not only on the TFT element 1d, the drain wiring 1e and the Cs wiring 1c, but also on the source wiring 1a and the gate wiring 1b. is there. In the liquid crystal display device having such a high aperture ratio structure, the gap between the adjacent picture element electrodes 3 is small, and it is difficult to arrange the spacer 19 outside the picture element area. For this reason, the spacer 19 is arranged in the picture element area.

The spacer 19 shown in FIGS. 3 and 4 is arranged at a portion facing the TFT element 1d when the substrates 44 and 43 are bonded. The picture element electrode 3 is a TFT element 1
A rectangular through hole 3a is formed in the upper part of d, that is, in the part facing the spacer 19.

When the substrates 44 and 43 are bonded together in a state where the portion formed on the spacer 19 of the counter electrode 6 and the pixel electrode 3 face each other, for example, the substrate 44 and 43 adhere to the pixel electrode 3, the counter electrode 6 and the spacer 19. Very thin alignment films 10 and 11 having a thickness of about 600 to 1000
And the counter electrode 6 and the pixel electrode 3 may come into contact with each other and become electrically conductive. Pixel electrode 3 and counter electrode 6
Is conducted, there is a problem that an electric short circuit occurs and no voltage is applied to the liquid crystal 8. On the other hand, in the liquid crystal display device 40, since the through-holes 3a are formed in the portions of the pixel electrodes 3 facing the spacers 19, the contact between the pixel electrodes 3 and the counter electrode 6 can be prevented. .

The portion where the red resin layer and the blue resin layer are laminated has the same light shielding property as the portion where the red resin layer, the green resin layer and the blue resin layer are laminated. Since the blue resin layer 19b is laminated on the red filter 5a, the spacer 19 has a sufficient light shielding property.

The portion of the liquid crystal display device 40 where the picture element electrode 3 and the counter electrode 6 face each other is a picture element area, and a portion of the picture element area that transmits light is an effective picture element area directly related to display. It is. When the spacers 19 are formed in the effective picture element area, light passing through the effective picture element area is blocked, and the aperture ratio of display is reduced. However, if the spacer 19 is formed in a region that blocks light incident on the TFT element 1d as shown in FIGS. 3 and 4, malfunction and unstable operation of the TFT element 1d due to light can be prevented.

In FIGS. 3 and 4, the spacer 19 is provided in a region facing the TFT element 1d.
Reference numeral 9 denotes a liquid crystal display by the spacers 19 when at least one of the pair of substrates 43 and 44 is formed in a region having a light-shielding property, for example, in a region where the gate wiring 1b, the source wiring 1a, or a black matrix is arranged. In addition to preventing a decrease in the aperture ratio of the device, it is possible to hide unevenness in the rubbing of the alignment film 11 by the spacer 19. Further, the gate wiring 1b and the source wiring 1a
If the spacer 19 is formed in a region that blocks incident light to the wiring such as, the reflection of light by the wiring can be prevented, and the display quality of the liquid crystal display device 40 can be improved.

FIGS. 5 and 6 are plan views for explaining the second arrangement position of the spacer 19 in the liquid layer display device 40. FIG. FIG. 5 shows the color filter layer 5, the light shielding portion 45 and the spacer 19 formed on the second substrate 44, and FIG.
1 shows a circuit layer 1. In FIG. 6, the position of the spacer 19 when the substrates 44 and 43 are bonded to each other is indicated by a virtual line.

On the second substrate 44 shown in FIG.
Reference numeral 9 denotes a light-shielding portion 45 which is arranged in a region facing the Cs wiring 1c and which faces the TFT element 1d.
The light-shielding portion 45 is provided to prevent malfunction and unstable operation of the TFT element 1d due to light.
A blue resin layer 19b is superposed on “a”.

Since the spacer 19 is provided in a region facing the Cs wiring 1c, it is possible to prevent the aperture ratio of the liquid crystal display device from being lowered by the spacer 19 as described above, and to rub the alignment film 11 by the spacer 19. The processing unevenness can be hidden, and the reflection of light by the Cs wiring 1c can be prevented.

In the picture element electrode 3 shown in FIG. 6, a rectangular through hole 3a is formed in a portion above the Cs wiring 1c, that is, in a portion facing the spacer 19. This can prevent the pixel electrode 3 and the counter electrode 6 from contacting and conducting.

The first substrate 43 shown in FIGS.
In the above, the pixel electrode 3 is provided with a rectangular through hole 3a,
However, the present invention is not limited to this. For example, in a configuration in which the spacer 19 partially faces the pixel electrode 3, a cutout portion may be provided in the pixel electrode 3. 3 may be provided with a circular through-hole. In this way, by removing the region of the pixel electrode 3 facing the spacer 19, conduction between the pixel electrode 3 and the counter electrode 6 can be prevented.

Since the pixel electrodes 3 are formed in a matrix by a patterning step after film formation, the shape of the mask portion of the mask plate used in this patterning step is changed without adding a step. can do. Therefore, when the portion of the pixel electrode 3 facing the spacer 19 is removed, conduction between the pixel electrode 3 and the counter electrode 6 can be prevented without adding a step and without increasing the manufacturing cost. it can.

In this embodiment, considering the displacement due to the bonding of the substrates 43 and 44, when the substrates 43 and 44 are bonded, the distance between the pixel electrode 3 and the upper surface of the spacer 19 is parallel to the substrate. The picture element electrode 3 is removed so as to be separated by about 10 μm or more, and a rectangular through hole 3a is provided.

The liquid crystal display device 40 has a configuration in which only the portion of the pixel electrode facing the spacer is removed.
The present invention is not limited to this. Even when the counter electrode on the spacer is removed by patterning the counter electrode, the portion of the pixel electrode facing the spacer and the counter electrode on the spacer are removed. With such a configuration, it is possible to prevent conduction between the pixel electrode and the counter electrode.

FIG. 7 is a sectional view showing a schematic structure of a liquid crystal display device 41 according to another embodiment of the present invention. Hereinafter, in the liquid crystal display device 41, description of portions configured similarly to the liquid crystal display device 40 illustrated in FIG. 1 will be omitted.

In the liquid crystal display device 40 shown in FIG. 1, the portion of the pixel electrode 3 facing the spacer 19 is removed,
a is formed, but in the liquid crystal display device 41 shown in FIG. 7, the portion of the pixel electrode 3 facing the spacer 19 is not removed,
An electrical insulating film 12, for example, an inorganic insulating film formed by CVD (Chemical Vapor Deposition) or the like, or an organic insulating film such as resin on the portion of the pixel electrode 3 facing the spacer 19 Are formed. Thereby, contact and electrical conduction between the pixel electrode 3 and the counter electrode 6 can be prevented, and the problem that no voltage is applied to the liquid crystal 8 can be solved. In this embodiment, the insulating film 12 is formed on the picture element electrode 3, but the spacer 1
An insulating film may be formed on the surface of the counter electrode 6 formed on the
It is sufficient that an electrical insulating film is interposed between the pixel electrode 3 and the pixel electrode 3.

FIG. 8 is a flowchart showing a procedure for forming the spacer 19 and the color filter layer 5. In the forming procedure shown in FIG. 8, a black resin layer in which carbon fine particles are dispersed in a resin is added to a red resin layer, a blue resin layer, and a green resin layer constituting the color filter layer 5 and the spacer 19. By adding the matrix, resin layers of a total of four colors are formed. The black matrix is formed after the color filter layer 5 and the spacer 19 are formed as the fourth color resin layer.

Next, the procedure for forming the resin layers of each color will be described. The surface of the substrate 7 on which the resin layer is to be formed is cleaned. A dry film composed of a support film and a red resin film is pressure-bonded and adhered to the washed transparent substrate 7 by a dry film lamination method described later, and the support film of the dry film is peeled off. As the dry film, for example, a transer film (trade name, manufactured by Fuji Photo Film Co., Ltd.) can be used.

Thereafter, a mask plate having a mask portion patterned on the transparent sheet 14 is arranged above the red resin film adhered on the transparent substrate 7 so as to be aligned. The mask plate is a red filter 5a made of a red resin film.
A mask portion patterned so that ultraviolet light is irradiated to a portion to be formed. Next, exposure is performed by irradiating ultraviolet rays from above the mask plate. Development, post-exposure, and post-bake are performed on the resin film in which the portion to be the red filter 5a is hardened by the exposure, to form the red filter 5a as the first color resin layer. After that, similarly to the red filter 5a, the blue filter 5 which is the resin layer of the second color is used.
b and the blue resin layer 19b, and then the green filter 5c and the green resin layer 19, which are the third color resin layers.
Then, a black matrix which is a resin layer of the fourth color is formed. As described above, the spacer 19 composed of the blue resin layer 19b and the green resin layer 19c can be formed simultaneously in the step of forming the color filter layer 5 for forming the blue filter 5b and the green filter 5c.

The black matrix may be formed as a first color resin layer before forming the color filter layer 5 and the spacer 19. When the light shielding layer is formed by laminating a red resin layer, a green resin layer, and a blue resin layer instead of the black matrix, the procedure for forming the black matrix may be omitted. Further, the spacer 19 may be formed from a black resin layer forming a black matrix.

FIG. 9 is a cross-sectional view for explaining a dry film laminating method for forming a resin film. First, a method of forming the dry film 18 in which the resin film 20 is formed on a sheet-like transparent base film 31 made of, for example, PET (polyethylene terephthalate) will be described with reference to FIG.

In order to form the dry film 18, a liquid resin is uniformly applied onto the base film 31 from the application protection slit 23 using an application machine such as a slit coater. Next, 5 minutes at 100 ° C. using the heater 24.
The resin film 20 is formed by drying the resin film for 20 minutes, and a protective film 21 made of polyethylene terephthalate is formed on the surface of the resin film 20.

The protective film layer 21 is provided to prevent the resin film 20 from being damaged or foreign matter from adhering. The dry film 18 formed as described above is wound into a roll to form a roll-shaped dry film 22. A known material can be used for the resin film 20 without any particular limitation, but it is preferable to use an acrylic photosensitive resin material that is cured by ultraviolet rays. If necessary, an intermediate layer such as a protective oxygen barrier film may be provided between the base film 31 and the resin film 20.

Next, as shown in FIG. 9B, the produced dry film 18 is transferred to the transparent substrate 7 using a vacuum laminator. As the vacuum laminator, for example, ANGER ELECTRONIC
VA-CUUM LAMINATOR TYPE V from GMBH
There are CL and others.

The protective film 21 is peeled off by the peeling device 27 immediately before the dry film 18 guided from the roll-shaped dry film 22 to the vicinity of the transparent substrate 7 is transferred to the transparent substrate 7. After the protective film 21 is peeled off,
The dry film 18 is heated and pressed on the transparent substrate 7 by the transfer roller 25. Peeled protective film 21
Is wound on the protective film winding roller 28, and the base film 31 remaining after the photosensitive resin 20 is transferred is
The film is wound on a base film winding roller 29.

A tension is applied between the transfer roller 25 and the roll-shaped dry film 22 in an area 26 where the dry film 18 is introduced from the roll-shaped dry film 22 so that the dry film 18 does not loosen or wrinkle. ing. The looseness or wrinkles in the introduction region 26
This occurs during transfer to the substrate, causing unevenness of the resin film 20 and entrapment of air bubbles. To prevent this, the tension is
It is set according to the material of the resin film 20 to be used and the size of the transparent substrate 7 to be transferred.

As described above, in the dry film laminating method, since a resin film having a uniform thickness is bonded by pressing, a resin layer having a uniform thickness can be formed. Therefore,
The thickness of the spacer 19 can be made uniform, and the distance between the substrates can be kept uniform. 8 and 9, the procedure for forming the resin film by the dry film laminating method has been described, but the present invention is not limited to this. For example, a coating machine having slits, or a liquid resin is made uniform by centrifugal force. The resin film may be formed by a spin coater that spreads out.

Although the liquid crystal display device having the TFT element has been described above, the present invention is not limited to this, and the MIM (Meta
The present invention can also be applied to a liquid crystal display device having a two-terminal type active element such as an (Insulator Metal) element.
Further, the present invention can be applied to not only a transmission type liquid crystal display device but also a reflection type liquid crystal display device.

[0061]

As described above, according to the present invention, the pixel electrode or the counter electrode in the region where the spacer is arranged is removed, so that the contact between the pixel electrode and the counter electrode can be prevented. In addition, conduction between the picture element electrode and the counter electrode can be prevented.

According to the present invention, the picture element electrode has a notch or a hole, and the spacer is arranged in a region of the picture electrode facing the notch or the hole. Therefore, the opposing electrode formed on the spacer and the pixel electrode can be prevented from opposing each other, and the contact between the pixel electrode and the opposing electrode can be prevented.

Since the pixel electrodes are formed in a matrix by a patterning step after the film formation, the shape of the mask portion of the mask plate used in the patterning step is changed without adding a step. The conduction between the pixel electrode and the counter electrode can be prevented without increasing the manufacturing cost.

Further, according to the present invention, the spacer is arranged in a region facing the picture element electrode of the other substrate, and is provided between the counter electrode formed on the spacer and the picture element electrode of the other substrate. Since the electrical insulating film is interposed, contact between the pixel electrode and the counter electrode can be prevented, and conduction can be prevented.

Further, according to the present invention, since the spacer is disposed in a region of the liquid crystal display device which does not transmit light, it is possible to prevent a decrease in the aperture ratio of the liquid crystal display device due to the spacer, and to provide an alignment film using the spacer. Rubbing process can be hidden.

Further, according to the present invention, the portion where the spacer is formed includes the resin layer constituting the color filter layer, and the resin layers of three colors of red, green and blue are laminated. Has light-shielding properties.

[Brief description of the drawings]

FIG. 1 shows a liquid crystal display device 40 according to an embodiment of the present invention.
It is sectional drawing which shows the schematic structure of.

FIG. 2 is a cross-sectional view illustrating a TFT circuit layer 1 of a first substrate 43.

3 shows a first example of a spacer 19 in the liquid layer display device 40. FIG.
FIG. 3 is a plan view for explaining the arrangement position of the.

FIG. 4 shows a first example of a spacer 19 in the liquid layer display device 40.
FIG. 3 is a plan view for explaining the arrangement position of the.

FIG. 5 shows a first example of a spacer 19 in the liquid layer display device 40.
FIG. 3 is a plan view for explaining the arrangement position of the.

FIG. 6 shows a first example of the spacer 19 in the liquid layer display device 40.
FIG. 3 is a plan view for explaining the arrangement position of the.

FIG. 7 is a liquid crystal display device 4 according to another embodiment of the present invention.
1 is a sectional view showing a schematic configuration of FIG.

FIG. 8 is a flowchart showing a procedure for forming a spacer 19 and a color filter layer 5;

FIG. 9 is a cross-sectional view for explaining a dry film laminating method for forming a resin film.

FIG. 10 is a sectional view showing a schematic configuration of a conventional liquid crystal display device 42.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 TFT circuit layer 2 Insulating layer 3 Pixel electrode 3a Through-hole 4,7 Transparent substrate 5 Color filter layer 5a Red filter 5b Blue filter 5c Green filter 6 Counter electrode 8 Liquid crystal 10,11 Alignment film 12 Insulating film 18 Dry Film 19 Spacer 19b Blue resin layer 19c Green resin layer 20 Resin film 21 Protective film layer 22 Rolled dry film 23 Protective slit 24 Heater 25 Transfer roller 26 Introducing area 27 Protective film peeling device 28 Protective film take-up roller 29 Base film Take-up roller 31 Base film 40, 41 Liquid crystal display 43 First substrate 44 Second substrate

 ──────────────────────────────────────────────────続 き Continued on front page F term (reference) 2H048 BA45 BB02 BB07 BB08 BB44 2H089 LA12 QA14 QA16 TA02 TA05 TA09 TA12 2H091 FB02 GA03 GA08 GA13 LA16 MA10 5C094 AA06 AA08 AA21 BA03 BA43 CA19 CA24 DA14 DA15 EA04 EA04 EA04 EA04 EA04 EA04 EA04 EA04 EA04 EA04 EA04 FB15

Claims (5)

[Claims] A liquid crystal layer is interposed between a pair of substrates disposed opposite to each other at a predetermined interval, and a plurality of resins arranged in a plane on one of the pair of substrates. A liquid crystal display device comprising a color filter layer comprising a layer, a spacer formed on the surface of the color filter layer, and a counter electrode covering the color filter layer and the spacer, and a picture element electrode on the other substrate. A liquid crystal display device which is disposed in a region of the other substrate facing the picture element electrode, and in which a part of the picture element electrode facing the spacer or a counter electrode on the spacer is removed. 2. The liquid crystal display device according to claim 1, wherein the picture element electrode has a through hole or a notch at a portion facing the spacer. 3. A plurality of resins arranged in a plane on one of the pair of substrates with a liquid crystal layer interposed between a pair of substrates arranged opposite to each other at a predetermined interval. A liquid crystal display device comprising a color filter layer comprising a layer, a spacer formed on the surface of the color filter layer, and a counter electrode covering the color filter layer and the spacer, and a picture element electrode on the other substrate. An electric insulating film is interposed between the counter electrode formed on the spacer and the picture element electrode of the other substrate, disposed in a region facing the picture element electrode of the other substrate. Liquid crystal display. 4. The liquid crystal display device according to claim 1, wherein the spacer is disposed in a region of the liquid crystal display device that does not transmit light.
3. The liquid crystal display device according to any one of 3. 5. The color filter layer includes a red resin layer, a green resin layer, and a blue resin layer, and the spacer is provided on a surface of the color filter layer.
The liquid crystal according to any one of claims 1 to 4, wherein two layers of these resin layers are laminated, and three color resin layers are laminated including a resin layer constituting a color filter layer. Display device.