JP2003295177A - Liquid crystal display and electronic device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transflective liquid crystal display capable of obtaining light and high-contract display having a wide viewing angle. <P>SOLUTION: This liquid crystal display employs a vertical alignment mode using a liquid crystal layer 50 that is vertically aligned in the initial alignment state, wherein a transparent display area T is disposed to surround the periphery of a reflective display area R in one dot. An insulating film 21 is provided in the area that corresponds to the reflective display area R in the center of the dot, the insulating film 21 making the thickness of the liquid crystal layer 50 in the reflective display area R smaller than the thickness of the liquid crystal display area 50 in the transparent display area T. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device and electronic equipment, and more particularly to a semi-transmissive reflection type liquid crystal display device which displays in both a reflection mode and a transmission mode, and which is capable of displaying a high contrast and a wide viewing angle. It concerns the technology obtained.

[0002]

2. Description of the Related Art Reflective liquid crystal display devices have low power consumption because they do not have a light source such as a backlight, and have been widely used in various portable electronic devices. However,
The reflection type liquid crystal display device has a problem that it is difficult to visually recognize the display in a dark place because the reflection type liquid crystal display device performs display by utilizing external light such as sunlight or illumination light. Therefore, there has been proposed a liquid crystal display device in which outside light is used in a bright place like a normal reflection type liquid crystal display device, and in a dark place a display can be visually recognized by an internal light source such as a backlight. That is,
This liquid crystal display device employs a display system that has both a reflective type and a transmissive type.The power consumption is reduced by switching to either the reflective mode or the transmissive mode display system depending on the ambient brightness. On the other hand, it is possible to perform a clear display even when the surroundings are dark. Hereinafter, in this specification, this type of liquid crystal display device is referred to as a “semi-transmissive reflective liquid crystal display device”.

Such a transflective liquid crystal display device has a structure in which a liquid crystal layer is sandwiched between an upper substrate and a lower substrate, and has a window for light transmission in a metal film such as aluminum. Equipped with the formed reflective film on the inner surface of the lower substrate,
A liquid crystal display device has been proposed in which this reflective film functions as a semi-transmissive reflective film. In this case, in the reflection mode, external light incident from the upper substrate side is reflected by the reflective film on the inner surface of the lower substrate after passing through the liquid crystal layer, passes through the liquid crystal layer again, and is emitted from the upper substrate side, contributing to display. To do. On the other hand, in the transmissive mode, light from the backlight, which is incident from the lower substrate side, passes through the liquid crystal layer through the window portion of the reflective film and then is emitted to the outside from the upper substrate side, which contributes to display. Therefore, in the area where the reflective film is formed, the area where the window is formed is the transmissive display area, and the other areas are the reflective display area.

In the liquid crystal orientation mode, a twisted nematic (TN) is abbreviated as a twisted nematic in which liquid crystal molecules are twisted in a direction substantially parallel to the substrate surface and perpendicular to the substrate when no voltage is applied. ) Mode,
There is a vertical alignment mode in which liquid crystal molecules are vertically aligned. Conventionally, the TN mode has been the mainstream from the viewpoint of reliability and the like, but since the vertical alignment mode has some excellent characteristics, a liquid crystal device of the vertical alignment mode has attracted attention.

For example, in the vertical alignment mode, since the state in which liquid crystal molecules are vertically aligned with the substrate surface (there is no optical retardation seen from the normal direction) is used for black display, the quality of black display is Good and high contrast can be obtained. Also, a vertical alignment type LCD with excellent front contrast
Then, the viewing angle range where a constant contrast is obtained is wider than that of the TN liquid crystal in the horizontal alignment mode. Furthermore, if a technique of alignment division (multi-domain) that divides the alignment direction of the liquid crystal in the pixel is adopted, an extremely wide viewing angle can be obtained.

In the transflective liquid crystal display device having the above structure, for example, when the thickness of the liquid crystal layer is d, the refractive index anisotropy of the liquid crystal is Δn, and the retardation of the liquid crystal shown as an integrated value thereof is Δn · d. , The retardation of the liquid crystal in the reflective display region is represented by 2 × Δn · d because the incident light passes through the liquid crystal layer twice and reaches the observer. on the other hand,
The liquid crystal retardation in the transmissive display region is 1 × Δ because the light from the backlight passes through the liquid crystal layer only once.
n · d.

As described above, in the case of controlling the alignment of the liquid crystal molecules of the liquid crystal layer while the retardation value is different between the reflective display area and the transmissive display area, the liquid crystal is conventionally driven with the same drive voltage in each display mode. The orientation is controlled by applying an electric field to. In this case, high contrast display cannot be obtained by orienting liquid crystal having different display forms in the liquid crystal, in other words, liquid crystal having different retardation in the transmissive display region and the reflective display region with the same drive voltage. There was a problem. In order to solve this problem, there has been proposed a liquid crystal display device having a structure in which the thickness of the liquid crystal layer is changed in the transmissive display region and the reflective display region (see, for example, Patent Document 1).

[0008]

[Patent Document 1] Japanese Patent Laid-Open No. 11-242226

[0009]

As described above, the use of the vertical alignment mode is also one of the methods for increasing the contrast, and a semi-transmissive reflective liquid crystal display device is combined with the vertical alignment mode to form a liquid crystal display device. There is also a desire to configure. However, there are problems to be solved, such as the problem of contrast reduction due to the retardation difference in both the reflective and transmissive display modes, the problem of alignment control in the vertical alignment mode, the problem of alignment division, etc. Is.

The present invention has been made in order to solve the above problems, and is a transflective liquid crystal display device, in which a liquid crystal display that is bright and has a high contrast and a wide viewing angle can be obtained. An object is to provide a display device.

[0011]

In order to achieve the above object, a liquid crystal display device of the present invention comprises a liquid crystal layer sandwiched between a pair of substrates, and a transmissive display for performing transmissive display in one dot area. A liquid crystal display device in which a display region and a reflective display region for performing reflective display are separately provided, wherein the liquid crystal layer is a liquid crystal layer in which an initial alignment state exhibits vertical alignment, and at least one of the pair of substrates. Between at least one of the substrate and the liquid crystal layer, an insulating film that makes the reflective display region and the transmissive display region different in layer thickness of the liquid crystal layer depending on the film thickness is provided at least in the reflective display region. Characterize.

The liquid crystal display device of the present invention is a combination of a transflective liquid crystal display device and a liquid crystal of a vertical alignment mode. In recent years, in a semi-transmissive reflection type liquid crystal display device, in order to solve the problem of the contrast reduction due to the retardation difference in both the reflective and transmissive display modes, for example, an insulating film having a predetermined thickness in the reflective display region on the lower substrate. Has been proposed in which the thickness of the liquid crystal layer is changed between the reflective display region and the transmissive display region by forming the liquid crystal layer so as to project toward the liquid crystal layer side. The present applicant has already filed many inventions of this type of liquid crystal display device. According to this configuration, the thickness of the liquid crystal layer in the reflective display area can be made smaller than the thickness of the liquid crystal layer in the transmissive display area due to the presence of the insulating film, so that the retardation in the reflective display area and the retardation in the transmissive display area are sufficient. Can be made to be close to or substantially equal to, so that the contrast can be improved.

Therefore, the present inventors have found that by combining a liquid crystal display device having the above-mentioned insulating film with a liquid crystal layer of a vertical alignment mode, it is possible to control the alignment direction of a vertical alignment mode liquid crystal when an electric field is applied. It was That is, when the vertical alignment mode is adopted, a negative type liquid crystal is generally used. However, since the liquid crystal molecules standing vertically to the substrate surface in the initial alignment state are overturned by the electric field application, nothing is done. Unless devised (unless pretilt is applied), the tilt direction of liquid crystal molecules cannot be controlled, alignment disorder (disclination) occurs, display defects such as light leakage occur, and display quality deteriorates. . Therefore, in adopting the vertical alignment mode, control of the alignment direction of liquid crystal molecules when an electric field is applied is an important factor. Therefore, in the liquid crystal display device including the above-mentioned insulating film,
Since the insulating film is projected toward the liquid crystal layer and the insulating film is a projection, so to speak, the liquid crystal molecules are vertically aligned in the initial state and have a pretilt according to the shape of the projection. By this action, the alignment direction of the liquid crystal molecules when an electric field is applied can be controlled, and thus display with high contrast can be realized without display defects such as light leakage.

That is, according to the structure of the present invention, by providing the transflective liquid crystal display device of the vertical alignment mode with the insulating film, the reflection which has hitherto been a fundamental problem of the transflective liquid crystal display device. It is possible to solve the problem of lowering the contrast due to the retardation difference in both the transmissive display modes, and at the same time, it is possible to suppress the display failure due to the inability to control the alignment direction of liquid crystal molecules in the vertical alignment mode. As a result, both the advantage of the vertical alignment mode and the advantage of the semi-transmissive reflection type can be utilized, and a liquid crystal display device having excellent display quality can be realized.

The arrangement of the transmissive display area and the reflective display area in one dot area can be set arbitrarily. In particular, the transmissive display area is provided so as to surround the periphery of the reflective display area and the insulating film is provided. It is desirable to provide it in the area corresponding to the reflective display area at the center of the dot. From this point of view, another liquid crystal display device of the present invention has a liquid crystal layer sandwiched between a pair of substrates and has a transmissive display area for transmissive display and a reflective display area for reflective display in one dot area. A liquid crystal display device provided individually, and between at least one substrate of the pair of substrates and the liquid crystal layer,
An insulating film that makes the reflective display region and the transmissive display region different in thickness of the liquid crystal layer depending on the film thickness is provided at least in the reflective display region, and in the one dot region, the liquid crystal in the central portion of the dot region is formed. It is characterized in that the layer thickness of the layer is set smaller than that of the peripheral portion.

According to this structure, for example, the reflective display area is formed in a rectangular shape at the center of one dot area, the rectangular insulating film is formed inside the reflective display area, and the transmissive display area is formed around the rectangular insulating film. If so, the alignment direction of the liquid crystal molecules around the insulating film at the center of the dot region is defined in four directions perpendicular to the respective sides of the rectangle. As a result, 1
A region having four different alignment directions is formed in the dot region, and an alignment division structure can be realized, so that a wide viewing angle can be achieved.

Alternatively, contrary to the above structure, a layer of the liquid crystal layer of the reflective display region and the transmissive display region is provided between at least one substrate of the pair of substrates and the liquid crystal layer. An insulating film having a thickness that varies depending on its own thickness is provided at least in the reflective display area, and the layer thickness of the liquid crystal layer in the peripheral portion of the dot region is set smaller than that in the central portion in the one dot region. Also good.
More specifically, the configuration is such that a reflective display region is provided so as to surround the transmissive display region within one dot, and an insulating film is provided in a region corresponding to the reflective display region around the dots.

According to this structure, for example, the transmissive display area is formed in a rectangular shape in the center of one dot area, the rectangular frame-shaped insulating film is formed outside the transmissive display area, and the reflective display area is formed around the insulating film. If so, the alignment directions of the liquid crystal molecules are defined in four directions perpendicular to the respective sides of the rectangular frame from the insulating film around the dot region toward the center. As a result, as in the case of the above configuration, 4 dots are printed in one dot area.
A region having three different alignment directions is formed, and an alignment division structure can be realized, so that a wide viewing angle can be achieved.

Further, it is preferable that the insulating film includes an inclined region having an inclined surface so that the film thickness of the insulating film continuously changes near the boundary between the reflective display region and the transmissive display region.

The end portion of the insulating film near the boundary between the reflective display area and the transmissive display area may have a step-like step. In that case, in the vicinity of the boundary between the reflective display area and the transmissive display area. Since the liquid crystal layer thickness changes abruptly due to the step, the liquid crystal orientation is disturbed, which may adversely affect the display. On the other hand, if an inclined surface is formed on the insulating film so that the film thickness of the insulating film continuously changes, the alignment state of the liquid crystal changes continuously according to the position of the inclined surface of the insulating film. Alignment disorder does not occur and display defects can be avoided. Further, if the insulating film has a rectangular shape as described above, the inclined surfaces also incline in four directions orthogonal to each other, and the presence of the inclined surfaces allows the alignment division structure to be formed more smoothly.

Further, an electrode for driving the liquid crystal layer is provided on the substrate on the side where the insulating film is provided, and an electrode non-formation region where the electrode does not exist is provided on at least a part of the inclined surface of the insulating film. It may be configured.

As described above, in the structure of the present invention, the orientation direction can be controlled only by providing the insulating film which is a protrusion protruding toward the liquid crystal layer, but the inclined surface of the insulating film can be controlled. If an electrode non-formed region where no electrode is present is provided in at least a part, the electric field (potential line) generated between the electrodes on both substrates is distorted in the vicinity of the electrode non-formed region, and the action of the distorted electric field causes the liquid crystal molecules to move. It is possible to more easily realize the control of the orientation direction of.

It is assumed that a central portion of one dot is a rectangular reflective display area and a peripheral portion thereof is a transmissive display area, and a rectangular frame-shaped electrode is not formed in an inclined area of an insulating film which is a boundary between the reflective display area and the transmissive display area. If the formation region is provided, the electrode in the reflective display region and the electrode in the transmissive display region are completely separated, and it becomes difficult to apply the same drive voltage to both of them at the same time. Therefore, it is preferable that the electrodes in the reflective display region and the electrodes in the transmissive display region, which are provided on both sides of the electrode non-forming region, are electrically connected to each other through a connecting portion formed of the same layer as these electrodes. Alternatively, it is preferable that the electrode in the reflective display area and the electrode in the transmissive display area are electrically connected to each other via a connecting portion made of a layer different from these electrodes. With this configuration, the same drive voltage can be easily applied simultaneously to the electrode in the reflective display area and the electrode in the transmissive display area.

Further, when the one substrate is an element substrate having pixel electrodes and switching elements and the other substrate is an opposite substrate having a common electrode and the insulating film, the pixels on the one substrate are It is desirable to arrange a contact hole that electrically connects the electrode and the switching element at a position that does not planarly overlap the inclined region.

Since the contact hole for electrically connecting the pixel electrode and the switching element is formed on the upper layer side of one of the substrates, the pixel electrode is usually depressed in the contact hole portion. . Therefore, in the case of the above structure, the electric field distorted in the vicinity of the electrode non-formation region is further distorted due to the depression of the pixel electrode, and the alignment control of the liquid crystal molecules can be further facilitated.

Further, in the case where an electrode for driving the liquid crystal layer and an insulating film are provided on one of the pair of substrates and an electrode for driving the liquid crystal layer is provided on the other substrate,
The electrode provided on the other substrate side preferably has a window portion outside the inclined region of the insulating film.

As described above, in the structure of the present invention, the alignment direction can be controlled only by providing the insulating film serving as a protrusion protruding toward the liquid crystal layer, but the other one facing the insulating film can be achieved. If a window is provided on the electrode on the substrate outside the inclined region of the insulating film, the electrode does not exist on the window after all, so it occurs between the electrodes on both substrates. The generated electric field is inclined obliquely, and the action of the oblique electric field can more smoothly realize the control of the alignment direction of the liquid crystal molecules.

When the insulating film has an inclined surface, the inclination angle of the inclined surface of the insulating film with respect to the substrate surface is 5 °.
It is desirable to be in the range of 50 °. The inclined surface may be flat or curved. And
As used herein, the “inclination angle of the inclined surface” means an inclined surface at a position where the layer thickness of the inclined region is h / 2 when the layer thickness of the flat portion of the insulating film 101 is h as shown in FIG. 101a
Is an angle θ formed by the tangent line S to the substrate surface 102 (flat surface).

If the inclination angle is less than 5 °, the surface becomes a gentle slope, the size of the inclined region becomes large, and there are too many portions where the retardation becomes a halfway value, resulting in a large optical loss. Will end up. On the other hand, the tilt angle is 50
If the angle exceeds 50 °, a steeply inclined surface is formed. When liquid crystal molecules are vertically aligned with respect to the inclined surface when a non-selective voltage is applied, disclination occurs between the liquid crystal molecules on the flat surface. As a result, black floating (light leakage) occurs and the contrast is lowered. Therefore, the inclination angle is 5 ° to 5
It is desirable to be in the range of 0 °.

The contour of the insulating film in one dot area is not particularly limited, but if it is a regular polygon or a circle, liquid crystal molecules in each dot area in each direction. Orientation is divided evenly. As a result, it is possible to widen the viewing angle isotropically with good contrast. Further, by providing the circularly polarized light incidence means for making the circularly polarized light incident on the one substrate and the other substrate, excellent display can be performed in both reflective display and transmissive display.

An electronic apparatus of the present invention is characterized by including the liquid crystal display device of the present invention. According to this configuration,
It is possible to provide an electronic device that includes a liquid crystal display unit that is bright, has high contrast, and has a wide viewing angle regardless of the usage environment.

[0032]

BEST MODE FOR CARRYING OUT THE INVENTION [First Embodiment] A first embodiment of the present invention will be described below with reference to FIGS. The liquid crystal display device of the present embodiment is an example of an active matrix type liquid crystal display device using a thin film transistor (hereinafter abbreviated as TFT) as a switching element.

FIG. 1 is an equivalent circuit diagram of a plurality of dots arranged in a matrix which constitutes an image display area of the liquid crystal display device of the present embodiment, and FIG. 2 is a structure of a plurality of adjacent dots on a TFT array substrate. FIG. 3 is a cross-sectional view showing the structure of the liquid crystal device, and is a cross-sectional view taken along the line AA ′ of FIG. In each of the following drawings, in order to make each layer and each member recognizable in the drawings,
The scale is made different for each layer and each member.

In the liquid crystal display device of the present embodiment, as shown in FIG. 1, in order to control the pixel electrode 9 and the pixel electrode 9 in a plurality of dots arranged in a matrix forming an image display area. TFT which is the switching element of
30 are formed respectively, and the data line 6a to which the image signal is supplied is electrically connected to the source of the TFT 30. Image signals S1 and S to be written in the data line 6a
2, ..., Sn are supplied line-sequentially in this order, or are supplied for each group to a plurality of adjacent data lines 6a. Further, the scanning line 3a is electrically connected to the gate of the TFT 30, and the scanning signals G1, G2, ..., Gm are pulse-wise line-sequentially applied to the plurality of scanning lines 3a at a predetermined timing. The pixel electrode 9 is TF
The image signals S1 and S supplied from the data line 6a are electrically connected to the drain of T30 and are turned on for a fixed period of time as the switching element TFT30.
2, ..., Sn are written at a predetermined timing.

The image signals S1, S2, ..., Sn having a predetermined level written in the liquid crystal through the pixel electrode 9 are held for a certain period between the common electrodes described later. The liquid crystal modulates light by changing the orientation and order of the molecular assembly depending on the applied voltage level, and enables gradation display. Here, in order to prevent the held image signal from leaking, a storage capacitor 70 is added in parallel with the liquid crystal capacitor formed between the pixel electrode 9 and the common electrode. Reference numeral 3b is a capacitance line.

Next, the planar structure of the TFT array substrate which constitutes the liquid crystal device of the present embodiment will be described with reference to FIG. As shown in FIG. 2, on the TFT array substrate,
A plurality of rectangular pixel electrodes 9 (outlined by a dotted line portion 9A) are provided in a matrix, and data lines 6a, scanning lines 3a, and capacitance lines 3b are provided along the vertical and horizontal boundaries of the pixel electrodes 9, respectively. Has been. In the present embodiment,
One dot area is inside the area where each pixel electrode 9 and the data line 6a, the scanning line 3a, the capacitance line 3b, etc., which are arranged so as to surround the pixel electrode 9, are arranged in a matrix. The structure is such that each dot area can be displayed.

The data line 6a constitutes the TFT 30,
For example, in the semiconductor layer 1a made of a polysilicon film, it is electrically connected to a source region described later through a contact hole 5, and the pixel electrode 9 is
It is electrically connected to a drain region described later via a contact hole 8. Further, in the semiconductor layer 1a, the scanning line 3a is arranged so as to face the channel region (the region of the diagonal line rising to the left in the drawing), and the scanning line 3a functions as a gate electrode in the portion facing the channel region. .

The capacitance line 3b is a main line portion extending in a substantially straight line along the scanning line 3a (that is, the scanning line 3 in plan view).
a first region formed along a) and a protruding portion (that is, the data line when seen in a plan view) protruding from the intersection with the data line 6a to the front side (upward in the figure) along the data line 6a. 6a and the 2nd area | region extended along). Then, in FIG. 2, a plurality of first light-shielding films 11a are provided in the region shown by the diagonal lines rising to the right.

More specifically, each of the first light-shielding films 11a includes a TFT 30 including a channel region of the semiconductor layer 1a.
It is provided in a position to cover when viewed from the FT array substrate side,
Further, the main line portion that extends linearly along the scanning line 3a so as to face the main line portion of the capacitance line 3b, and the rear side adjacent to the main line portion that intersects the data line 6a along the data line 6a (that is, downward in the figure). ) Has a protruding portion. The tip of the downward projecting portion in each stage (pixel row) of the first light-shielding film 11a has the capacitance line 3 in the next stage below the data line 6a.
It overlaps with the tip of the upward protrusion of b. A contact hole 13 for electrically connecting the first light-shielding film 11a and the capacitance line 3b to each other is provided in this overlapping portion. That is, in the present embodiment, the first light shielding film 11a
Are electrically connected to the capacitance line 3b at the front stage or the rear stage by the contact hole 13.

As shown in FIG. 2, a rectangular reflection film 20 is formed at the center of one dot area, and the area where the reflection film 20 is formed becomes a reflection display area R, and the surrounding area. A region where the reflective film 20 is not formed becomes a transmissive display region T. Further, the rectangular insulating film 21 is formed so as to include the formation region of the reflective film 20 therein when seen in a plan view.

Next, the sectional structure of the liquid crystal display device of the present embodiment will be described with reference to FIG. FIG. 3 is A of FIG.
Although it is a cross-sectional view taken along the line -A ', the present invention is characterized by the configuration of the insulating film in the central portion of the dot, and the cross-sectional structure of the TFT and other wiring is the same as that of the conventional one. Are not shown and described.

As shown in FIG. 3, the TFT array substrate 10
A liquid crystal layer 50 made of liquid crystal having an initial alignment state of vertical alignment is sandwiched between the liquid crystal layer 50 and a counter substrate 25 arranged to face it. The TFT array substrate 10 has a substrate body 10A made of a translucent material such as quartz or glass, and a reflective film 20 made of a metal film having a high reflectance such as aluminum or silver is formed on the surface of the substrate body 10A. As described above, the area where the reflective film 20 is formed becomes the reflective display area R, and the area where the reflective film 20 is not formed becomes the transmissive display area T.

On the reflective film 20 located in the reflective display region R, the dye layer 2 constituting the reflective display color filter.
2R is provided, and on the substrate located in the transmissive display region T, a dye layer 22 constituting a color filter for transmissive display is provided.
T is provided. Generally, in a transflective liquid crystal display device, in reflection display, the light passes through a color filter.
In contrast to transmissive transmission, transmissive display transmits only once, which causes a problem that the saturation of display color is different between reflective display and transmissive display. Therefore, the present applicant has proposed a technique of changing the color purity of the dye layer of the color filter between the reflective display area and the transmissive display area to improve the balance of the display colors in the reflective display and the transmissive display. The dye layers of the reflective display color filter and the transmissive display color filter described above employ this technique.

An insulating film 21 is formed at a position corresponding to the reflective display region R on the pigment layers 22R and 22T of the reflective display color filter and the transmissive display color filter. The insulating film 21 is made of, for example, an organic film such as acrylic resin having a film thickness of about 2 to 3 μm, and has a sloped surface in the vicinity of the boundary between the reflective display region R and the transmissive display region T so that its layer thickness continuously changes. It has an inclined region K with 21a. Since the thickness of the liquid crystal layer 50 where the insulating film 21 does not exist is about 4 to 6 μm, the thickness of the liquid crystal layer 50 in the reflective display region R is about half the thickness of the liquid crystal layer 50 in the transmissive display region T. That is, the insulating film 21 functions as a liquid crystal layer thickness control layer that makes the reflective display region R and the transmissive display region T have different liquid crystal layer 50 thicknesses depending on the film thickness thereof. In addition, the dye layer 22R of the color filter,
The angle θ between the surface of 22T and the inclined surface 21a of the insulating film 21 is about 5 ° to 50 °. In the case of the present embodiment, the edge of the upper flat surface of the insulating film 21 and the edge of the reflective film 20 (reflective display region) are substantially coincident with each other, and the inclined region K is included in the transmissive display region T. .

Then, on the surface of the TFT array substrate 10 including the surface of the insulating film 21, indium tin oxide (Indium tin oxide)
Tin Oxide, hereinafter abbreviated as ITO) or the like, the pixel electrode 9 made of a transparent conductive film, and the alignment film 23 made of polyimide or the like.
Are formed.

On the other hand, on the counter substrate 25 side, a common electrode 31 made of a transparent conductive film such as ITO and an alignment film 33 made of polyimide are formed on a substrate body 25A made of a translucent material such as glass or quartz. ing. TFT array substrate 1
Both the alignment films 23 and 33 of the counter substrate 25 and the counter substrate 25 are subjected to vertical alignment processing.

Although not shown, a circularly polarizing plate is provided on the outer surface side of the TFT array substrate 10, and a circularly polarizing plate is also provided on the outer surface side of the counter substrate 25.

According to the liquid crystal display device of the present embodiment, the thickness of the liquid crystal layer 50 in the reflective display region R is set to the thickness of the liquid crystal layer 50 in the transmissive display region T by providing the insulating film 21 in the reflective display region R. Since it can be reduced to about half, the retardation in the reflective display region R and the transmissive display region T
The retardations can be made substantially equal to each other, whereby the contrast can be improved. Further, since the insulating film 21 projects toward the liquid crystal layer 50 and the insulating film 21 serves as a protrusion, the liquid crystal molecule 50B is vertically aligned in the initial state as shown in the schematic view of the liquid crystal molecule 50B in FIG. Then, it has a pretilt corresponding to the shape of the protrusion. By this action, liquid crystal molecules 50B
Since it is possible to control the orientation direction when an electric field is applied,
It is possible to realize a high-contrast display without display defects such as light leakage.

That is, according to the configuration of the present embodiment,
Insulating film 2 is applied to the transflective liquid crystal display device in the vertical alignment mode.
With the provision of 1, it is possible to solve the problem of contrast reduction due to the retardation difference in both the reflective and transmissive display modes, and at the same time, it is possible to suppress the display failure due to the uncontrollable alignment direction of the liquid crystal molecules in the vertical alignment mode. As a result, both the advantage of the vertical alignment mode and the advantage of the semi-transmissive reflection type can be utilized, and a liquid crystal display device having excellent display quality can be realized.

Further, in the case of the present embodiment, a rectangular reflective display area R is provided in the central portion of one dot area, and the rectangular insulating film 21 corresponds to the reflective display area R in the central portion of the dot area. Insulation film 2 in the center of the dot because it is provided at the location
With 1 as the center, the alignment directions of the liquid crystal molecules are defined in four directions perpendicular to the respective sides of the rectangle. As a result, regions (domains) having four different alignment directions are formed in one dot region, and an alignment division structure can be realized, so that a wide viewing angle can be achieved.

Further, the insulating film 21 has a tilted region K near the boundary between the reflective display region R and the transmissive display region T, and the alignment state of the liquid crystal molecules 50B according to the position of the tilted surface 21a of the insulating film 21. Also changes continuously, so that a large disorder of orientation does not occur, and a display defect can be avoided. In addition, the inclined surface 21a of the insulating film 21 is also inclined in four directions orthogonal to each other, and the existence of the inclined surface 21a allows the alignment division structure to be formed smoothly.

[Second Embodiment] The second embodiment of the present invention will be described below.
An embodiment will be described with reference to FIGS. 4 and 5. The basic configuration of the liquid crystal display device of the present embodiment is exactly the same as that of the first embodiment, except that the common electrode is provided with a window portion for alignment control. Therefore, in FIGS. 4 and 5, the same components as those in FIGS. 2 and 3 are denoted by the same reference numerals, and detailed description thereof will be omitted.

In the case of this embodiment, as shown in FIGS. 4 and 5, the structure on the TFT array substrate 10 side is not different from that of the first embodiment, but the common electrode on the counter substrate 25 is used. A window portion 31M is provided at 31. Window 31M
Are provided in one dot, and are formed in a slender rectangular shape in the direction along the data line 6a in plan view. The window portion 31M is formed at a position outside the inclined region K of the insulating film 21.

As described in the first embodiment, in the structure of the present invention, it is possible to achieve the control of the alignment direction only by providing the insulating film serving as the protrusion protruding toward the liquid crystal layer. However, as in this embodiment,
The window portion 3 is formed on the common electrode 31 on the counter substrate 25 facing the insulating film 21 so as to be located outside the inclined region K of the insulating film 21.
When 1M is provided, no electrode exists in the window portion 31M, so the electric field generated between the electrodes on both substrates is inclined obliquely, and the action of this oblique electric field further controls the alignment direction of the liquid crystal molecules 50B. It can be realized smoothly. The broken line shown in the liquid crystal layer 50 of FIG. 5 is a potential line, and since the liquid crystal molecules 50B are aligned along the potential line, the insulating film 21 causes a smooth alignment without causing disclination.

The shape of the window is not limited to that shown in FIG. 4, but may be formed in a rectangular ring shape corresponding to domains in four directions, for example. However, in that case, the inside and outside of the window need to be electrically connected as one electrode, so the inside and outside of the window are connected at any point, not in a completely continuous rectangular ring shape. Is desirable.

[Third Embodiment] The third embodiment of the present invention will be described below.
The embodiment will be described with reference to FIG. The basic configuration of the liquid crystal display device of this embodiment is exactly the same as that of the first and second embodiments, and only the position of the insulating film is different. Therefore, in FIG. 6, the same components as those in FIGS. 3 and 5 are designated by the same reference numerals, and detailed description thereof will be omitted.

In the first and second embodiments, the insulating film 21 is provided at the center of one dot, whereas
In the case of the present embodiment, as shown in FIG. 6, the insulating film 21 is arranged on one end side of one dot. Corresponding to this, only one window portion 31M is provided for one dot, and is arranged outside the inclined region K of the insulating film 21.

In the present embodiment, since the insulating film 21 is not located at the center of the dot, four domains are formed substantially evenly within one dot as in the first and second embodiments. The orientation of the liquid crystal molecules 50B is not controlled as described above. However, it is possible to solve the problem of lowering the contrast due to the retardation difference in both the reflective and transmissive display modes, suppress the display failure due to the uncontrollable alignment direction of the liquid crystal molecules in the vertical alignment mode, and to provide a liquid crystal display device with excellent display quality. In terms of realization, the same effects as those of the first and second embodiments can be obtained. Further, in the present embodiment as well as in the second embodiment, the window portion 31M is formed, but the broken line shown in the liquid crystal layer 50 of FIG. 6 is a potential line, and the liquid crystal molecule 50B is a potential line. Since it is oriented along the insulating film 21, the insulating film 21 does not cause disclination, so that the insulating film 21 is oriented smoothly.

[Fourth Embodiment] The fourth embodiment of the present invention will be described below.
The embodiment will be described with reference to FIGS. 7 and 8. 7 is a plan view showing the structure of a plurality of adjacent dots on the TFT array substrate, and FIG. 8 is a sectional view showing the structure of the liquid crystal device, which is a sectional view taken along the line AA ′ of FIG. is there. The basic configuration of the liquid crystal display device of the present embodiment is substantially the same as that of the first to third embodiments, but a reflective display region R and a transmissive display region T are provided.
The position relationship is reversed, and the form of the pixel electrode is different. 7 and 8, the same components as those in FIGS. 2 and 3 are designated by the same reference numerals, and detailed description thereof will be omitted.

The TFT array substrate of this embodiment is shown in FIG.
As shown in FIG. 3, a rectangular frame-shaped reflective film 20 is formed in the peripheral portion of one dot area, and the area in which the reflective film 20 is formed becomes a reflective display area R, and the reflective film 20 inside thereof is The area not formed becomes the transmissive display area T.
In other words, in the first to third embodiments, the inside of one dot area is the reflective display area R and the outside is the transmissive display area T, but in the present embodiment, they are reversed. Further, the rectangular frame-shaped insulating film 21 is formed so as to include the formation region of the reflective film 20 therein when viewed in a plan view.

Regarding the sectional structure, as shown in FIG. 8, a reflective film 20 made of a metal film having a high reflectance such as aluminum or silver is formed on the TFT array substrate 10. As described above, the area where the reflective film 20 is formed becomes the reflective display area R, and the area where the reflective film 20 is not formed becomes the transmissive display area T. On the reflective film 20 located in the reflective display region R, the dye layer 22R constituting the reflective display color filter
And a dye layer 22T forming a color filter for transmissive display is provided on the substrate located in the transmissive display region T. An insulating film 21 is formed at a position corresponding to the reflective display region R on each of the dye layers 22R and 22T of the reflective display color filter and the transmissive display color filter. The insulating film 21 has, in the vicinity of the boundary between the reflective display region R and the transmissive display region T, an inclined region K having an inclined surface 21a whose layer thickness continuously changes. In the case of the present embodiment, the edge of the upper flat surface of the insulating film 21 and the edge of the reflective film 20 (reflective display region) are substantially coincident with each other, and the inclined region K is included in the transmissive display region T.

A pixel electrode 9 made of a transparent conductive film such as ITO is formed on the surface of the TFT array substrate 10 including the surface of the insulating film 21. However, in the first to third embodiments, the pixel electrode 9 is formed over the entire one dot region, whereas in the present embodiment, the pixel electrode 9 is formed on the flat surface of the insulating film 21. However, the pixel electrode 9 is not formed on the inclined surface 21a, which is the electrode non-forming region 9N.

A plan view of this is as shown in FIG.
In FIG. 7, the portion in which the pixel electrode 9 is present is shown by a diagonal line descending to the right. That is, the insulating film 21 has a concave portion in which the shape of a truncated pyramid is inverted in the central portion of the dot area, and the pixel electrode 9 is not formed on the inclined surface 21a. Therefore, the substantially rectangular frame-shaped electrode non-forming region 9N is provided. However, if the electrode non-forming region 9N has a rectangular frame shape, the electrode on the outside (reflection display region R) and the electrode on the inside (transmission display region T) are completely separated. Therefore,
The pixel electrode 9 in the reflective display area R and the pixel electrode 9 in the transmissive display area T are connected to each other by a connecting portion 9C made of ITO in the same layer as these electrodes.
Are electrically connected via. With this configuration, the same drive voltage can be simultaneously applied to the pixel electrodes 9 in both the reflective display region R and the transmissive display region T. The connecting portion 9C may be formed in a layer different from the pixel electrode 9 and connected to the pixel electrode 9 via the contact hole.
Further, as shown in FIG. 8, the pixel electrode 9 and the insulating film 21
An alignment film 23 made of polyimide or the like is formed on the entire surface of the substrate so as to cover the inclined surface 21a.

On the other hand, on the counter substrate 25 side, a common electrode 31 made of a transparent conductive film such as ITO and an alignment film 33 made of polyimide are formed on a substrate body 25A made of a translucent material such as glass or quartz. ing. TFT array substrate 1
Both the alignment films 23 and 33 of the counter substrate 25 and the counter substrate 25 are subjected to vertical alignment processing.

Also in the present embodiment, the above-mentioned first to third
It is possible to obtain the same effect as that of the above embodiment. That is, as described in the above-described embodiment, in the configuration of the present invention, the insulating film 2 serving as a protrusion protruding toward the liquid crystal layer.
It is possible to achieve the control of the alignment direction only by providing 1. However, in this embodiment, since the pixel electrode 9 does not exist on the inclined surface 21a of the insulating film 21, the electric field generated between the electrodes on both substrates is distorted in the vicinity of the inclined region K, and the electric field Liquid crystal molecules 5 due to distortion
It is possible to more smoothly realize the control of the 0B orientation direction. The broken line p shown in the liquid crystal layer 50 in FIG. 8 is a potential line, and the liquid crystal molecules 50B are aligned along the potential line p, so that the insulating film 21 does not cause disclination and smoothly aligns.

[Fifth Embodiment] The fifth embodiment of the present invention will be described below.
An embodiment will be described with reference to FIGS. 9 and 10. The basic configuration of the liquid crystal display device of this embodiment is exactly the same as that of the fourth embodiment, and only the size of the electrode non-formation region is different. Therefore, in FIGS. 9 and 10, the same components as those in FIGS. 7 and 8 are designated by the same reference numerals, and detailed description thereof will be omitted.

In the fourth embodiment, the insulating film 21
In contrast to the entire electrode non-formation region 9N on the inclined surface 21a, in the present embodiment, as shown in FIGS. 9 and 10, only a part of the insulating film 21 on the inclined surface 21a is slit. The electrode-shaped non-formation region 9N is formed. In both the fourth and fifth embodiments, the electrode non-formation region 9N is provided only because the mask pattern has such a shape when the pixel electrode 9 is patterned.
There is no particular difference in the manufacturing process as compared with the case where N is not provided.

Also in this embodiment, since the electrode non-forming region 9N where the pixel electrode 9 does not exist is provided on the inclined surface 21a of the insulating film 21, the electric field generated between the electrodes on both substrates is in this region. And the distortion of the electric field makes it possible to control the alignment direction of the liquid crystal molecules 50B more smoothly, which is the same effect as in the fourth embodiment. The shape, the formation position, and the like of the electrode non-formation region 9N in the fourth and fifth embodiments are not limited to the above example and can be changed as appropriate.

[Sixth Embodiment] The sixth embodiment of the present invention will be described below.
The embodiment will be described with reference to FIG. The basic configuration of the liquid crystal display device of the present embodiment is exactly the same as that of the fourth embodiment, and only the inclination angle of the inclined surface of the insulating film is defined. Therefore, in FIG. 11, the same components as those in FIG. 8 are designated by the same reference numerals, and detailed description thereof will be omitted.

In one dot area, the transparent display area T
When the area of the transparent display area T is relatively large (for example, the area ratio of the transmissive display region T is 50% or more), as shown in FIG.
The reflective film 20 is extended below the inclined region K, and the inclined region K of the insulating film 21 is used as the reflective display region R. In the fourth embodiment (FIG. 8), the reflective film 20 is not formed below the inclined region K of the insulating film 21, and the inclined region K of the insulating film 21 is the transmissive display region T. . Further, the inclination angle θ of the inclined surface 21a of the insulating film 21 is defined to be about 50 °.

In both the transmissive display region T and the reflective display region R, the inclined region K has a halfway retardation value, and this region becomes a factor of degrading the display quality. In this embodiment, since this area is included in the reflective display area R, the quality of the reflective display is slightly inferior,
The display quality of transmissive display does not deteriorate. Therefore, if anything, the configuration is suitable for a transflective liquid crystal display device that emphasizes transmissive display.

[Seventh Embodiment] The seventh embodiment of the present invention will be described below.
The embodiment will be described with reference to FIG. Figure 12
FIG. 3 is a cross-sectional view showing the configuration of the liquid crystal display device of the present embodiment. In FIG. 12, the same components as those in the sectional views of the above-described embodiment shown in FIG. 8 and the like are designated by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIG. 12, the liquid crystal display device of the present embodiment is a liquid crystal composed of a liquid crystal in which an initial alignment state is vertical alignment between the TFT array substrate 10 and a counter substrate 25 arranged to face the TFT array substrate 10. The layer 50 is sandwiched. On the counter substrate 25, a pigment layer 22R that constitutes a reflective display color filter and a pigment layer 22T that constitutes a transmissive display color filter are provided. Dye layers 22R, 22 of color filters for reflective display and color filters for transmissive display
The insulating film 21 is provided on the T at a position corresponding to the reflective display region R.
Are formed. Then, the common electrode 31 is formed on the insulating film 21 and the dye layer 22T of the transmissive display color filter.
Are formed. In the case of the present embodiment as well, the insulating film 21 has the inclined surface 21a, but the common electrode 31 is not formed on the inclined surface 21a, and the electrode non-forming region 31N is formed.

The TFT 11 is provided on the TFT array substrate 10.
0 is formed. The TFT 110 has a source region 11
It has a semiconductor layer 111 having 1s, a drain region 111d, and a channel region 111c, a gate insulating film 112, and a gate electrode 113. In addition, the source region 111
A source line 114 (data line) is connected to s, and a drain electrode 115 is connected to the drain region 111d. Then, the interlayer insulating film 11 is formed on the drain electrode 115.
The pixel electrode 9 is connected through the contact hole 117 provided in No. 6, but in the present embodiment, if the contact hole 117 overlaps the inclined region K of the insulating film 21 on the counter substrate 25 side in plan view. Instead, it is arranged at a position below the dye layer 22T (flat surface) of the transmissive display color filter.

In the case of this embodiment, the orientation of the liquid crystal molecules 50B can be controlled by the shape effect of the insulating film 21 provided on the counter substrate 25 side, and the common electrode 31 is not provided on the inclined surface 21a of the insulating film 21. By providing the non-formation region 31N, the alignment of the liquid crystal molecules 50B can be further controlled. In addition, since the contact hole 117 is arranged in the region on the TFT array substrate 10 corresponding to the flat surface that does not planarly overlap with the inclined region K of the insulating film 21, the electric field generated in the liquid crystal layer 50 contacts. Distortion occurs in the vicinity of the hole 117, and the distortion of the electric field allows the alignment direction of the liquid crystal molecules 50B to be controlled more smoothly. Figure 1
The broken line p shown in the second liquid crystal layer 50 is a potential line, and the liquid crystal molecules 50B are aligned along the potential line p, so that the liquid crystal molecules 50B are smoothly aligned without causing disclination.

[Electronic Equipment] Next, specific examples of electronic equipment equipped with the liquid crystal display device of the above-described embodiment of the present invention will be described. FIG. 14 is a perspective view showing an example of a mobile phone. In FIG. 14, reference numeral 500 denotes a mobile phone main body, and reference numeral 501 denotes a display unit using the above liquid crystal display device.

FIG. 15 is a perspective view showing an example of a portable information processing device such as a word processor and a personal computer. In FIG. 15, reference numeral 600 is an information processing apparatus, reference numeral 601 is an input unit such as a keyboard, reference numeral 603 is an information processing apparatus main body,
Reference numeral 602 indicates a display unit using the liquid crystal display device.

FIG. 16 is a perspective view showing an example of a wrist watch type electronic device. In FIG. 16, reference numeral 700 indicates a watch body, and reference numeral 701 indicates a display section using the liquid crystal display device.

Since the electronic equipment shown in FIGS. 14 to 16 is equipped with the display section using the liquid crystal display device of the above-mentioned embodiment, it is bright and has high contrast regardless of the use environment.
It is possible to realize an electronic device including a liquid crystal display unit with a wide viewing angle.

The technical scope of the present invention is not limited to the above embodiment, and various changes can be made without departing from the spirit of the present invention. For example, in the above-described embodiment, an example in which the present invention is applied to an active matrix type liquid crystal display device using TFTs as switching elements has been described, but a thin film diode (Thin Film Diode,
The present invention can be applied to an active matrix type liquid crystal display device, a passive matrix type liquid crystal display device, etc. using a TFD) switching element. In addition, specific descriptions regarding materials, dimensions, shapes, and the like of various constituent elements can be appropriately changed.

[0081]

As described above in detail, according to the present invention, in the transflective liquid crystal display device, it is possible to solve the problem of contrast reduction due to the difference in retardation in both reflective and transmissive display modes, and to perform vertical alignment. It is possible to suppress a display defect due to an uncontrollable orientation direction of liquid crystal molecules in the mode, and as a result, it is possible to realize a liquid crystal display device having excellent display quality. In addition, an orientation division structure can be realized depending on the arrangement of the insulating film, and a wide viewing angle can be achieved.

[Brief description of drawings]

FIG. 1 is an equivalent circuit diagram of a plurality of dots arranged in a matrix forming an image display area of a liquid crystal display device according to a first embodiment of the present invention.

FIG. 2 is a plan view showing a structure of a plurality of adjacent dots on a TFT array substrate which constitutes the liquid crystal display device.

3 is a cross-sectional view showing the structure of the liquid crystal display device, which is a cross-sectional view taken along the line AA ′ of FIG.

FIG. 4 is a plan view showing a structure of a plurality of dots adjacent to each other on a TFT array substrate which constitutes a liquid crystal display device according to a second embodiment of the present invention.

5 is a sectional view showing the structure of the liquid crystal display device, which is a sectional view taken along the line AA ′ of FIG.

FIG. 6 is a sectional view showing a structure of a liquid crystal display device according to a third embodiment of the present invention.

FIG. 7 is a plan view showing a structure of a plurality of dots which are adjacent to each other on a TFT array substrate which constitutes a liquid crystal display device according to a fourth embodiment of the present invention.

8 is a cross-sectional view showing the structure of the liquid crystal display device, taken along the line AA ′ in FIG. 7.

FIG. 9 is a plan view showing a structure of a plurality of dots which are adjacent to each other on a TFT array substrate which constitutes a liquid crystal display device according to a fifth embodiment of the present invention.

10 is a cross-sectional view showing the structure of the liquid crystal display device, which is a cross-sectional view taken along the line AA ′ of FIG. 9.

FIG. 11 is a sectional view showing a structure of a liquid crystal display device according to a sixth embodiment of the present invention.

FIG. 12 is a sectional view showing a structure of a liquid crystal display device according to a seventh embodiment of the present invention.

FIG. 13 is a diagram for explaining an inclination angle of an insulating film in the present invention.

FIG. 14 is a perspective view showing an example of an electronic device of the present invention.

FIG. 15 is a perspective view showing another example of the electronic apparatus of the present invention.

FIG. 16 is a perspective view showing still another example of the electronic device of the present invention.

[Explanation of symbols]

9 pixel electrodes 10 TFT array substrate 20 reflective film 21 Insulating film 21a inclined surface 25 Counter substrate 31 common electrode 31M window 50 liquid crystal layer R reflective display area T transparent display area

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Tsuyoshi Maeda             Seiko, 3-3-3 Yamato, Suwa City, Nagano Prefecture             -In Epson Corporation F-term (reference) 2H090 HA04 HA05 HD06 LA01 LA04                       LA20 MA01                 2H091 FA14Y FA15Y GA03 GA06                       GA07 GA11 GA16 JA03 LA17                       LA19                 2H092 GA13 JA46 JB05 JB07 JB56                       NA01 PA02 PA12

Claims (15)

[Claims] 1. A liquid crystal layer is sandwiched between a pair of substrates,
A liquid crystal display device in which a transmissive display region for transmissive display and a reflective display region for reflective display are separately provided in one dot region, wherein the liquid crystal layer is a liquid crystal layer in which an initial alignment state is vertical alignment. The layer thickness of the liquid crystal layer in the reflective display region and the transmissive display region is different between at least one of the pair of substrates and the liquid crystal layer, depending on its own thickness. A liquid crystal display device, wherein an insulating film is provided at least in the reflective display region. 2. A liquid crystal layer is sandwiched between a pair of substrates,
A liquid crystal display device in which a transmissive display region for performing transmissive display and a reflective display region for performing reflective display are separately provided in one dot region, wherein at least one of the pair of substrates and the liquid crystal layer are provided. And an insulating film that makes the layer thickness of the liquid crystal layer of the reflective display region and the transmissive display region different according to the film thickness of the liquid crystal layer are provided in at least the reflective display region, and in the one dot region. A liquid crystal display device, wherein the thickness of the liquid crystal layer in the central portion of the dot region is set smaller than that in the peripheral portion. 3. The transmissive display region is provided so as to surround the periphery of the reflective display region within the one dot, and the insulating film is provided in a region corresponding to the reflective display region at a central portion of the dot. The liquid crystal display device according to claim 1 or 2. 4. A liquid crystal layer is sandwiched between a pair of substrates,
A liquid crystal display device in which a transmissive display region for performing transmissive display and a reflective display region for performing reflective display are separately provided in one dot region, wherein at least one of the pair of substrates and the liquid crystal layer are provided. And an insulating film that makes the layer thickness of the liquid crystal layer of the reflective display region and the transmissive display region different according to the film thickness of the liquid crystal layer are provided in at least the reflective display region, and in the one dot region. A liquid crystal display device, wherein the layer thickness of the liquid crystal layer in the peripheral portion of the dot region is set smaller than that in the central portion. 5. The reflective display area is provided so as to surround the transmissive display area within the one dot, and the insulating film is provided in an area corresponding to the reflective display area around a dot. The liquid crystal display device according to claim 1, wherein the liquid crystal display device is a liquid crystal display device. 6. The insulating film includes an inclined region having an inclined surface so that the film thickness of the insulating film continuously changes near the boundary between the reflective display region and the transmissive display region. The liquid crystal display device according to claim 1. 7. An electrode non-formation region in which an electrode for driving the liquid crystal layer is provided on the substrate on the side where the insulating film is provided, and the electrode is not present on at least a part of an inclined surface of the insulating film. 7. The apparatus according to claim 6, wherein
The liquid crystal display device according to item 1. 8. The electrode in the reflective display area and the electrode in the transmissive display area, which are provided on both sides of the electrode non-formed area, are electrically connected to each other through a connecting portion formed of the same layer as these electrodes. The liquid crystal display device according to claim 7, wherein the liquid crystal display device is provided. 9. The electrodes of the reflective display area and the electrodes of the transmissive display area, which are provided on both sides of the electrode non-forming area, are electrically connected to each other through a connecting portion made of a layer different from these electrodes. The liquid crystal display device according to claim 7, wherein the liquid crystal display device is provided. 10. One of the substrates is an element substrate having a pixel electrode and a switching element, and the other substrate is an opposite substrate having a common electrode and the insulating film. 10. The contact hole for electrically connecting the pixel electrode and the switching element is arranged at a position that does not planarly overlap with the inclined region, according to any one of claims 7 to 9. Liquid crystal display device. 11. An electrode for driving the liquid crystal layer and the insulating film are provided on one substrate of the pair of substrates, and an electrode for driving the liquid crystal layer is provided on the other substrate. 10. The electrode provided and provided on the other substrate side has a window portion outside the inclined region of the insulating film, according to any one of claims 7 to 9. Liquid crystal display device. 12. The liquid crystal display device according to claim 6, wherein an inclination angle of the inclined surface of the insulating film with respect to a substrate surface is in a range of 5 ° to 50 °. 13. The liquid crystal display device according to claim 2, wherein a contour of the insulating film in the one dot region is a regular polygon or a circle. 14. The circularly polarized light incident means for causing circularly polarized light to be incident on the one substrate and the other substrate, according to any one of claims 1 to 13. Liquid crystal display device. 15. An electronic apparatus comprising the liquid crystal display device according to claim 1. Description: