JPH10142613A - Liquid crystal cell - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid crystal cell in which a cell gap between bus substrates are formed uniformly in each part. SOLUTION: In a joint part area in which both substrates 1, 2 are connected together by means of a sealant 3, a data dummy film 12 with a thickness equal to that of a lead part 7a in a data line 7 is formed so as to be overlapped to a lead part 6a in each gate line 6 in the part in which the lead part 6a is arranged, a gate dummy film 13 with a thickness equal to that of the lead part 6a in the gate line 6 is formed so as to be overlapped to the lead part 7a in the part in which the lead part 7a in each data line 7 is arranged, and the gate dummy film 13 with a thickness equal to that of the lead part 6a in the gate line 6 and the data dummy film 12 with a thickness equal to that of the lead part 7a in the data line 7 are formed while overlapping each other in the part in which neither of the lead parts 6a, 7a in the gate lines 6 and the data line 7 is arranged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal cell used for a liquid crystal display device, and more particularly to a liquid crystal cell having a higher cell gap (substrate spacing).

[0002]

2. Description of the Related Art In addition to a commonly used TN type liquid crystal display device, a birefringent effect type, a ferroelectric liquid crystal or an antiferroelectric liquid crystal which obtains a colored display without using a color filter is used in a liquid crystal display device. These liquid crystal display devices generally include a liquid crystal cell and a pair of polarizing plates disposed so as to sandwich the liquid crystal cell. Some birefringence effect type liquid crystal display devices have a retardation plate provided between a liquid crystal cell and a polarizing plate.

In the liquid crystal cell, a pair of substrates made of glass or the like are joined via a frame-shaped sealing material made of a resin mixed with a gap material for regulating a cell gap (substrate gap). A liquid crystal is sealed in a region surrounded by a sealing material. On the inner surface of the one substrate, a plurality of pixel electrodes, a plurality of active elements respectively connected to the pixel electrodes, and a gate signal are supplied to these active elements. And a data line and a gate line for supplying a data signal;
A lead portion is formed to connect these lines to a gate signal terminal and a data signal terminal disposed outside the sealing material, and a counter electrode facing the plurality of pixel electrodes is formed on the inner surface of the other substrate. Have been.

[0004] An alignment film for regulating the alignment state of liquid crystal molecules is provided on the pixel electrode and the counter electrode of each substrate. Further, in a liquid crystal cell used for a TN type, ferroelectric liquid crystal display device or the like that obtains colored display using a color filter, a color filter is provided on the inner surface of one of the substrates.

[0005]

The display characteristics of the above-mentioned liquid crystal display device vary depending on the thickness of the liquid crystal layer and the orientation of liquid crystal molecules. It is necessary to keep the liquid crystal layer thickness of the cell, that is, the cell gap, uniform throughout the cell.

The cell gap is regulated by a gap material mixed in a seal material for joining the two substrates, and a lead portion of the gate line and a lead portion of the data line in a joint portion of the seal material pass through. The cell gap in the portion where the lead portion passes is regulated by the gap material scattered on the respective lead portions, and the cell gap in the other region is regulated by the gap material in contact with the substrate surface. A cell gap corresponding to the thickness of the lead portion occurs between the cell gap at the portion where the lead portion passes and the cell gap at a portion where the lead portion does not pass.

This cell gap difference is an accuracy that hardly causes a problem in a TN type liquid crystal display device. However, in a birefringence effect type liquid crystal display device or a ferroelectric liquid crystal display device, the cell gap difference of the liquid crystal cell is small. Of the liquid crystal cell can be affected by the birefringence effect of the liquid crystal (or the birefringence effect of the liquid crystal and the retardation plate) and the polarization action of the polarizing plate. d
In a birefringent effect type liquid crystal display device which displays a plurality of colors by changing (the product of the refractive index anisotropy Δn of the liquid crystal and the thickness d of the liquid crystal layer), a slight variation in cell gap causes color unevenness in display. Will appear.

The present invention has been made in view of such a point. It is an object of the present invention to provide a liquid crystal cell in which the cell gap between the two substrates is made uniform with high accuracy without variation. It is in.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a plurality of pixel electrodes arranged in a matrix, a plurality of active elements connected to these pixel electrodes, A substrate on which a gate line and a data line for supplying a gate signal and a data signal to an element, and a lead portion connecting these lines to the outside of the arrangement region of the plurality of pixel electrodes are formed; and And the other substrate on which a counter electrode facing is formed,
A frame-shaped sealing material for joining the one and the other substrates,
In a liquid crystal cell having a liquid crystal sealed in a gap between the one substrate and the other substrate surrounded by the sealing material, a lead portion of the data line is disposed in a frame-shaped joining region in which the sealing material is disposed. A liquid crystal cell characterized in that a data dummy film having substantially the same thickness as the lead portion of the data line is formed in a portion other than the portion where the data line is formed.

In such a liquid crystal cell, the thickness of the data line substantially equal to the thickness of the lead portion is formed in the other portion of the bonding region for bonding the opposing substrates where the lead portion of the data line is not formed. Since the data dummy of
It is possible to further reduce the difference between the substrate gaps of the respective portions in the bonding region, and to make the substrate gap of the liquid crystal cell uniform.

Further, the data dummy film is disposed so as to overlap with the lead portion of the gate line, thereby further reducing the difference in substrate gap between the portion where the data line lead portion is formed and the portion where the gate dummy film is formed. And the substrate gap of the liquid crystal cell can be made uniform.

Further, according to the present invention, in addition to the data dummy film, a gate dummy film having a film thickness substantially equal to the gate line lead portion is disposed so as to overlap the data line lead portion and / or the data dummy film. By doing so, the distance between the lead portion and the dummy film and between the two dummy portions in the bonding region becomes equal, so that the cell gap of the liquid crystal cell can be made more uniform.

The data dummy film and the gate dummy film are each formed in a rectangular shape having a side along the lead portion of the gate line and a side along the lead portion of the data line. To prevent the dummy film from penetrating the sealing material, thereby preventing impurities from entering the liquid crystal cell along the boundary between each dummy film and the sealing material.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, a TFT (thin film transistor), one substrate on which a pixel electrode, a gate line, and a data line connected to the TFT are formed, and a counter electrode facing the pixel electrode are provided. In a liquid crystal cell in which the other formed substrate is joined by a sealing material around the substrate so as to face the predetermined substrate gap, a data line lead between the substrates in a joining region where the sealing material is arranged A portion where the portion is disposed through the sealing material, a portion where the lead portion of the gate line is disposed through the sealing material, and a portion where neither the data line nor the lead portion of the gate line are disposed. Of these, the film of the data line is provided on one or both of the portion where the lead of the gate line is arranged and the portion where no lead is arranged. To form a data dummy film having a substantially equal thickness and. This data dummy film is preferably formed at least in a portion where none of the above-mentioned lead portions are arranged, and is further preferably formed in a portion where the above-mentioned gate line lead is arranged.

Further, in addition to the above-described data dummy film, one or both of the junction regions where neither the data line nor the gate line lead portion is disposed may have a thickness substantially equal to the thickness of the gate line. Further, a gate dummy film having a thickness equal to that of the gate dummy film was further formed. This gate dummy film is preferably formed at least in a portion where none of the lead portions are arranged, and is further preferably formed in a portion where the lead portion of the data line is arranged.

Most preferably, a portion of the junction region where the lead portion of the gate line is disposed includes:
In the portion where the data dummy film is formed and neither the lead portion of the gate line nor the lead portion of the data line is arranged, both the data dummy film and the gate dummy film are formed.

Each of the dummy films may be formed in a linear shape having the same width as the lead portion of the gate line or the data line, and may be formed so as to be stacked on each other at an interval width of the arrangement of the respective lead portions. It may be formed in a continuous band shape along the longitudinal direction. In this case, it is preferable that at least one of the sides of each dummy film along the longitudinal direction of the sealing material is disposed so as to be embedded in the sealing material.

It is also possible to form an oxide film by anodic oxidation on the surfaces of the gate line and its lead, respectively. In this case, the film thickness of the gate line lead and the film thickness of the gate dummy film are formed. An oxide film is also formed on the surface of the gate dummy film by anodic oxidation treatment so as to make the same.

[0019]

Embodiments of the present invention will be described below with reference to the drawings. A first embodiment will be described with reference to FIGS. The liquid crystal cell of the present invention is of an active matrix type using a thin film transistor as an active element, as shown in FIG. A liquid crystal 20 is sealed between the substrates 1 and 2 surrounded by the sealing material 3.

As shown in FIG. 4, on one of the pair of substrates 1 and 2, for example, on the inner surface of the lower substrate 1, there are provided a plurality of transparent pixel electrodes 4 arranged in a matrix. In addition, a plurality of thin film transistors 5 connected to the TFTs 4 and a gate line 6 and a data line 7 for supplying a gate signal and a data signal to each of the thin film transistors 5 (hereinafter, referred to as TFTs) are formed.

The gate line 6 and the data line 7
Are extended to the outside of the substrate 1 through bonding regions (indicated by broken lines in FIG. 3) in which the sealing material 3 is formed to form leads 6a and 7a, and are formed at the edge of the substrate 1. Connected to the connection terminals 6b and 7b with the drive circuit.

In this embodiment, a display area E for displaying an image is formed at a portion on the substrate 1 where the plurality of pixel electrodes 4 are arranged in a matrix, and a gate, which will be described later, is formed at a portion corresponding to the junction region. Dummy film 13 and data dummy film 1
Either one or two of them forms a dummy formation region D in which both are provided.

FIG. 4 shows the TFT 5 in a simplified manner. The TFT 5 has a gate electrode formed on the substrate 1, a gate insulating film made of SiN or the like covering the gate electrode, An i-type semiconductor film formed on the insulating film so as to face the gate electrode; and a source electrode and a drain electrode formed on both sides of the i-type semiconductor film via the n-type semiconductor film. The gate line 6 is wired on the substrate 1, and the gate electrode of the TFT 5 is formed integrally with the gate line 6.

The gate insulating film of the TFT 5 is formed over the entire display area E, and the data line 7 is wired on the gate insulating film and connected to the drain electrode of the TFT 5, and the pixel electrode 4 is formed on the gate insulating film and connected to the source electrode of the TFT 5. Then, a protective film made of SiN or the like is formed so as to cover the TFT 5.

As shown in FIG. 3, a counter electrode 8 is formed on the inner surface of the upper substrate 2 so as to face all of the pixel electrodes 4. The counter electrode 8 is formed of a single-layer transparent conductive film corresponding to the entire display region E.

Although not shown in the figure, an alignment film covering each pixel electrode 4 and TFT 5 is formed on the inner surface of the lower substrate 1, and an alignment film covering the counter electrode 8 is formed on the inner surface of the upper substrate 2. A film is formed. These alignment films are made of a horizontal alignment material such as polyimide, and their film surfaces are subjected to an alignment treatment by rubbing.

The lower substrate 1 and the upper substrate 2 are opposed to each other with the surfaces on which the respective pixel electrodes 4 and the counter electrodes 8 are formed facing inward. The lead members 6a and 7a extending from 4 are joined by a seal material 3 arranged so as to intersect, and a portion where the seal material 3 is formed forms a joint region.

Note that these alignment films are provided so as not to overlap with the sealing material 3 and at least over the entire display region E, avoiding the joining region by the sealing material 3.
1 (a), 1 (b) and 1 (c) show a cross-sectional structure of each portion of the junction region. FIG. 1 (a) shows that the lead portion 6a of the gate line 6 in the junction region is not shown. FIG. 1B is a cross-sectional view of a portion A in FIG. 3 in which the lead portion 7a of the data line 7 in the bonding region is disposed, and FIG. C in FIG. 3 in which none of the lead portions 6a, 7a of the gate line 6 and the data line 7 in the junction region is provided.
It is sectional drawing of a part.

FIG. 2A is a sectional view taken along the line II-II in FIG. 1A, and FIG. 2B is a sectional view taken along the line II-II in FIG. 1B. FIG. 2C is a sectional view taken along FIG.
(C) is a cross-sectional view taken along the line c-a.

As shown in FIGS. 1A and 2A, the gate line 6 and its lead 6a are formed on the substrate 1 and covered with the gate insulating film 10. The gate line 6 and its lead 6a are made of, for example, AlT
a single-layer metal film of an Al alloy such as i.
1 is, for example, 0.230 μm.

Data line 7 and its lead portion 7a
Is formed on the gate insulating film 10 and is covered with the protective film 11, as shown in FIGS. 1B and 2B. This data line 7 and its lead portion 7a
It is composed of a two-layer metal film of r and an Al alloy such as AlTi, and has a thickness t2 of, for example, 0.355 μm.

As shown in FIGS. 1A and 2A, the lead portions 7a of the data lines 7 are formed on the lead portions 6a of the respective gate lines 6 with the gate insulating film 10 interposed therebetween.
And data dummy films 12 having the same thickness as
These data dummy films 12 are covered with the protective film 11. The data dummy film 12 is formed so as to be stacked with substantially the same width as the lead portion 6a of the gate line 6, and is provided so as to overlap the lead portion 6a via the gate insulating film 10.

As shown in FIGS. 1B and 2B, the same film as the lead portion 6a of the gate line 6 with the gate insulating film 10 interposed under the lead portion 7a of each data line 7. Thick gate dummy films 13 are respectively formed. This gate dummy film 13 is formed in a linear shape having substantially the same width as the lead portion 7a of the data line 7, and the gate insulating film 1 is formed.
0 is provided so as to overlap with the lead portion 7a.

Further, any of the lead portions 6a, 7a of the gate line 6 and the data line 7 in the junction region
In the part C in FIG.
As shown in FIG. 2C, the gate dummy film 13 has the same thickness as the lead portion 6a of the gate line 6, and the data dummy film 12 has the same thickness as the lead portion 7a of the data line 7.
Are formed so as to overlap with the gate insulating film 10 therebetween,
The data dummy film 12 is covered with a protective film 11.
These dummy films 12 and 13 are formed in the shape of a line having substantially the same width as the lead portions 6a and 7a.
Are provided in parallel with each other along the longitudinal direction of the sealing material 3 at the same interval as the interval between the adjacent lead portions 6a and 7a.

The data dummy film 12 formed in the A section and the C section includes the data line 7 and its lead section 7b.
Consists of a metal film of the same two-layer structure of Cr and AlTi,
The gate dummy film 13 formed in the part B and the part C
Is the same Al as the gate line 6 and its lead portion 6a.
It consists of a single-layer metal film of Ti.

Therefore, the gate dummy films 13 in the B portion and the C portion can be formed simultaneously with the step of patterning the gate line 6 and its lead portion 6a on the substrate 1, and the data dummy films in the A portion and the C portion are formed. The film 12 connects the data line 7 and its lead portion 7a to the gate insulating film 1.
0 can be formed at the same time as the step of forming a pattern. By forming each of the dummy films 12 and 13 by this method, the gate dummy films 1 in the B portion and the C portion are formed.
3 can be made the same as the thickness of the gate line 6 and its lead portion 6a, and the data dummy film 12 of the A portion and the C portion can be made the same as the data line 7 and its lead portion 7a.

Each of the dummy films 12 and 13 is formed in a linear shape having a predetermined length, and is arranged in parallel at a predetermined interval from each other. One side of each of the dummy films 12, 13 is disposed inside and is provided so as to overlap with the sealing material 3.

On the other hand, the sealing material 3 is made of a thermosetting or photo-curing resin, and the resin includes both substrates 1 and 2.
Spherical resin or Si for regulating the cell gap between the two
Many gap members 15 made of insulating particles such as O ₂ are mixed.

The liquid crystal cell of this embodiment has a pair of substrates 1 and
2, for example, the above-mentioned sealing material 3 is printed on the upper substrate 2 in a frame shape surrounding the liquid crystal enclosing region, and the substrates 1 and 2 are overlapped and pressed to form a gap (cell) between the substrates 1 and 2. Gap) is regulated by the gap material 15 in the sealing material 3,
In this state, the sealing material 3 is cured, and the two substrates 1 and 2 are joined together to assemble.

After assembling the liquid crystal cell, the sealing material 3 is formed by partially removing the sealing material 3 inside the liquid crystal cell, that is, in a liquid crystal sealing region surrounded by the substrates 1 and 2 and the sealing material 3. Liquid crystal is injected and filled by a vacuum injection method from a previously set liquid crystal injection port (not shown), and then the injection port is sealed with a sealing resin (not shown).

The orientation of the liquid crystal molecules sealed in the liquid crystal cell is controlled in the vicinity of the substrates 1 and 2 by the alignment films provided on the substrates 1 and 2, respectively. The alignment is performed in a predetermined alignment state, for example, a twist alignment state.

In the liquid crystal cell of this embodiment, in the portion A where the lead portion 6a of the gate line 6 passes through the joint area between the two substrates 1 and 2 by the sealing material 3, the lead portion 6a of the gate line 6 passes. And the data dummy film 12 are stacked and arranged, and in the portion B where the lead 7a of the data line 7 passes, the lead 7a of the data line 7 and the gate dummy film 13 are stacked and arranged, and In a portion C where neither the lead portions 6a and 7a of the line 6 and the data line 7 pass, the gate dummy film 13 and the data dummy film 12 are stacked.

The thickness of the data dummy film 12 is the same as the thickness of the lead portion 7a of the data line 7, the thickness of the gate dummy film 13 is the same as the thickness of the lead portion 6a of the gate line 6, Therefore, the total film thickness of the lead portion 6a and the data dummy film 12 in the portion A, the total film thickness of the lead portion 7a and the gate dummy film 13 in the portion B, and the gate dummy film 13 in the portion C And data dummy film 12
Therefore, the cell gaps of the portions A, B, and C regulated by the gap material 15 in the seal material 3 are kept the same, so that the seal material 3 has almost the same thickness. The cell gap becomes uniform over the entire circumference.

For this reason, for example, utilizing the birefringence effect of the liquid crystal (or the birefringence effect of the liquid crystal and the retardation plate) and the polarizing action of the polarizing plate, the Δn · d
By using the above-mentioned liquid crystal cell in a birefringence effect type liquid crystal display device that displays a plurality of colors by changing the color, it is possible to realize a high quality color display with almost no color unevenness due to a variation in the cell gap of the liquid crystal cell. Can be.

In the liquid crystal cell of this embodiment,
The dummy films 12 and 13 are provided so as to be located inside the outer edge of the sealing material 3, that is, since the inner edge of the dummy formation region is located outside the inner edge of the bonding region and overlaps with the outer edge, the Therefore, it is possible to prevent such an inconvenience that an impurity penetrates the liquid crystal in the cell through the boundary surface between the dummy films 12 and 13. Note that each dummy film may have the sealing material 3 overlapped on one side along the longitudinal direction of the aforementioned sealing material, and the outer edge of the dummy formation region is larger than the inner edge of the bonding region and overlaps. May be arranged.

FIGS. 5 and 6 show a second embodiment of the present invention. In this embodiment, an oxide layer 6 'is formed on the surface of each gate line 6 and its lead portion 6a by anodic oxidation. In order to make the film thickness the same as that of the lead portion 6a of the gate line 6,
Similarly, an oxide layer 13 'is formed on the surface of each gate dummy film 13 by anodic oxidation.

In the case of this embodiment, in order to enable the anodic oxidation treatment for each gate dummy film 13, the end on one end side of each gate dummy film 13 is moved from the outer edge of the sealing material 3 to the outside thereof. And extends to the peripheral edge of the substrate 1.

According to this embodiment, the anodic oxide film 6 'is formed on the surface of the gate line 6 and its lead portion 6a, and the film of the gate line 6 and its lead portion 6a is thickened by this anodic oxidation. . Therefore, the gate dummy film 13 is provided to extend to the peripheral edge of the substrate, and an anodic oxidation potential is supplied from the extended portion at the time of anodic oxidation to form an anodic oxide film 13 'on the surface. Thereby, the lead portion 6a of the gate line 6 and
The thickness of the gate dummy film 13 can be made substantially equal even after the anodic oxidation treatment, and the gap between the substrates in each portion of the bonding region where the gap material is arranged is made equal to make the cell gap of the liquid crystal cell uniform.

In the first and second embodiments, the data dummy film 12 is arranged in the portion A where the leads 6a of the gate lines 6 are arranged, and the lead portions 7a of the data lines 7 are arranged in the junction area. In the part B, the gate dummy film 13 is provided.
The data dummy film 12 is provided in the portion C which is not arranged in any of the lead portions of the gate line 6 and the data line 7.
And the case where the gate dummy film 13 is provided, however, the present invention is not limited to the first and second embodiments, and at least a C portion of the A portion and the C portion of the junction region is provided. The data dummy film 12 may be provided. That is, the data dummy film 12 is formed in the portion C where the lead portions of the gate line 6 and the data line 7 are not formed, or in the portion A where the lead portions of the C portion and the gate line 6 are formed. You may. Further, in addition to the data dummy film 12, it is desirable to form the gate dummy film 13 on one or both of the C portion and the B portion where the data lines 7 are arranged. As described above, since at least the data dummy film 12 is provided in the C portion, the A portion, or both, the lead portion 7 of the data line 7 which is formed to have a large thickness in order to reduce the resistance.
Due to a, the difference in the substrate spacing occurring at the junction is reduced, and a uniform cell gap is obtained. In each of the above embodiments, each dummy film is formed in a linear shape arranged at regular intervals, but may be formed in a continuous belt shape along the longitudinal direction of the sealing material.

[0050]

As described above, according to the present invention, the thickness of the lead portion is substantially equal to the thickness of the lead portion in the other portion where the lead portion of the data line is not formed in the joining region for joining the opposing substrates. Since the data dummy film having the same thickness as that of the liquid crystal cell is arranged, the difference between the substrate intervals at each portion in the bonding region is reduced, and the entire cell gap of the liquid crystal cell can be made uniform.

Further, since the data dummy film is disposed so as to overlap the lead portion of the gate line, the difference in substrate gap between the portion where the data line lead portion is formed and the portion where the data dummy film is formed is further increased. The distance between the substrates of the liquid crystal cell can be made uniform.

Further, in the present invention, in addition to the data dummy film, a gate dummy film having substantially the same thickness as the gate line lead portion is disposed so as to overlap the data line lead portion and / or the data dummy film. Because
Since the thickness of the lead portion and the dummy film and the two dummy films in the bonding region overlap each other and the gap between the bonding regions where the gap material is disposed can be made equal, the cell gap can be made uniform. it can.

Further, since the dummy film is arranged along the longitudinal direction of the sealing material, one side of which overlaps with the sealing material, the dummy film does not penetrate the sealing material. No impurities enter the liquid crystal cell along the boundary with the material.

[Brief description of the drawings]

FIG. 1 shows a cross-sectional structure of a liquid crystal cell according to a first embodiment of the present invention, and FIG. 1 (a) is a cross-sectional view of a portion where a lead portion of a gate line passes in a bonding region where both substrates are bonded. (B) is a cross-sectional view of a portion through which a lead portion of a data line passes, and (c) is a cross-sectional view of a portion through which neither a lead portion of a gate line or a data line passes.

FIG. 2A is a sectional view taken along the line II in FIG. 1;
1 (b) is a cross-sectional view along the roll line in FIG. 1, and FIG.
Sectional drawing which follows the ha-ha line in the inside.

FIG. 3 is a partially broken plan view schematically showing the configuration of a liquid crystal cell.

FIG. 4 is an enlarged plan view showing a part of one substrate of the liquid crystal cell.

5A and 5B show a cross-sectional structure of a liquid crystal cell according to a second embodiment of the present invention, and FIG. 5A is a cross-sectional view of a portion where a lead portion of a gate line passes in a bonding region where both substrates are bonded. (B) is a cross-sectional view of a portion through which a lead portion of a data line passes, and (c) is a cross-sectional view of a portion through which neither a lead portion of a gate line or a data line passes.

FIG. 6A is a sectional view taken along the line II in FIG. 1;
1 (b) is a cross-sectional view along the roll line in FIG. 1, and FIG.
Sectional drawing which follows the ha-ha line in the inside.

[Explanation of symbols]

 Reference numerals 1, 2, substrate 3, sealing material 4, pixel electrode 5, thin film transistor 6, gate line 6a, lead portion 7, data line 7a, lead portion 12, data dummy film 13, gate dummy film 15, gap material

Claims (4)

[Claims] A plurality of pixel electrodes arranged in a matrix; a plurality of active elements connected to the pixel electrodes;
One substrate on which a gate line and a data line for supplying a gate signal and a data signal to these active elements, respectively, and a lead portion extending from these lines to the outside of a display area where the plurality of pixels are arranged are formed. And the other substrate on which a counter electrode facing the plurality of pixel electrodes is formed, a frame-shaped sealing material for joining the one and the other substrates, and the one and the other surrounded by the sealing material. In a liquid crystal cell having a liquid crystal sealed in a gap between substrates, in a frame-shaped joining region in which the sealing material is arranged, the data is provided in a portion other than the portion where the REIT portion of the data line is arranged. A liquid crystal cell, wherein a data dummy film having substantially the same thickness as a lead portion of a line is formed. 2. The data dummy film according to claim 1, wherein a portion of the junction region where a lead of the gate line is arranged is provided.
2. The liquid crystal cell according to claim 1, wherein the liquid crystal cell is formed by laminating with a lead portion of the gate line. 3. The semiconductor device according to claim 1, further comprising a gate dummy film disposed in a portion other than a portion where the lead portion of the gate line is disposed, corresponding to the junction region, and having substantially the same thickness as the gate line. 2. The liquid crystal cell according to claim 1, wherein the data dummy film is formed so as to be laminated on the lead portion of the gate line and the gate dummy, respectively, corresponding to the junction region. 4. The data dummy film and the gate dummy film,
Each is formed in a rectangular shape having sides along the lead portion of the gate line and the lead portion of the data line,
2. The liquid crystal cell according to claim 1, wherein at least one side is embedded in a sealing material in the bonding area.