JP2021018397A - Liquid crystal display device - Google Patents

Abstract

To provide a liquid crystal display device having high resolution and high contrast with a simple structure.SOLUTION: The liquid crystal display device includes: a first substrate; a second substrate; a liquid crystal layer; a plurality of first electrodes 15 provided above the first substrate and separated from one another; a plurality of wiring portions 13 provided above the first substrate and disposed closer to the first substrate than the plurality of first electrodes; an insulation film 14 provided between the plurality of first electrodes and the plurality of wiring portions; and at least one second electrode 17 provided above the second substrate and disposed to oppose to the plurality of first electrodes. The first electrodes are arranged into rows along a first direction in a plan view. Each wiring portion extends in the first direction in a plan view and disposed to overlap the first electrode in a plan view; and each wiring portion is connected to any one of the first electrodes through an opening in the insulation film.SELECTED DRAWING: Figure 4

Description

The present invention relates to a dot matrix type liquid crystal display device.

Conventionally, a dot matrix type liquid crystal display device in which a plurality of pixel portions are arranged in a matrix has been known. In the dot matrix type liquid crystal display device, an arbitrary image can be displayed by individually controlling each pixel portion. As one of such dot matrix type liquid crystal display devices, there is a simple matrix type liquid crystal display device (see, for example, Japanese Patent Application Laid-Open No. 2006-243773). In a simple matrix type liquid crystal display device, it is a general configuration that a plurality of striped electrodes are provided on each of the upper and lower substrates, and the electrodes are cross-arranged, and the overlapping portion of the electrodes is a pixel portion. Such a simple matrix method has an advantage that the structure is simpler and manufacturing is easier than the active matrix method in which a switching element such as a thin film transistor is provided for each pixel portion to control each pixel portion. ..

By the way, when the simple matrix method is adopted, it is necessary to increase the number of striped electrodes in order to increase the resolution, but the number of duties increases accordingly. In principle, in the simple matrix method, the higher the duty number, the smaller the on / off ratio of the voltage in each pixel portion, and there is a disadvantage that the electro-optical characteristics deteriorate. In particular, the higher the duty number, the lower the contrast tends to be.

Japanese Unexamined Patent Publication No. 2006-243773

One of the specific aspects of the present invention is to provide a liquid crystal display device having a simple structure and high resolution and high contrast.

[1] The liquid crystal display device of one aspect according to the present invention is (a) a first substrate and a second substrate arranged to face each other, and (b) a liquid crystal provided between the first substrate and the second substrate. A layer, a plurality of first electrodes provided on (c) the first substrate and separated from each other, and (d) a plurality of first electrodes provided on the first substrate and more than the plurality of first electrodes. A plurality of wiring portions arranged on the side close to the first substrate, (e) an insulating film provided between the plurality of first electrodes and the plurality of wiring portions, and (f) the second substrate. The plurality of first electrodes are provided above and include at least one second electrode which is arranged to face the plurality of first electrodes. (G) The plurality of first electrodes are arranged in a row along the first direction in a plan view. (H) The plurality of wiring portions extend along the first direction in a plan view, and are arranged so as to overlap with the plurality of first electrodes in a plan view. Is a liquid crystal display device connected to any one of the plurality of first electrodes via an opening of the insulating film.
[2] The liquid crystal display device of one aspect according to the present invention is (a) a first substrate and a second substrate arranged to face each other, and (b) a liquid crystal provided between the first substrate and the second substrate. More than a layer, (c) a plurality of first electrodes provided on the first substrate and separated from each other, and (d) a plurality of first electrodes provided on the first substrate and separated from each other. A plurality of wiring portions arranged on the side close to the first substrate, (e) an insulating film provided between the plurality of first electrodes and the plurality of wiring portions, and (f) the second substrate. A plurality of second electrodes provided above and arranged to face the plurality of first electrodes are included, and (g) the plurality of wiring portions extend along the first direction in a plan view. In addition, the plurality of first electrodes are arranged so as to overlap with the plurality of first electrodes in a plan view, and (h) the plurality of first electrodes are arranged in a row in the first direction in a plan view, and the first electrode is arranged. Every nth (where n is a natural number of 1 or more) first electrodes along the direction share one of the plurality of wiring portions, and the shared one wiring portion and the opening of the insulating film are shared. (I) The plurality of second electrodes are 1 with respect to (n + 1) first electrodes arranged continuously along the first direction among the plurality of first electrodes. It is a liquid crystal display device that is associated with each other and arranged so as to be adjacent to each other along the first direction.

According to the above configuration, a liquid crystal display device having a simple structure and high resolution and high contrast can be obtained.

FIG. 1 is a diagram showing a configuration of a liquid crystal display device according to an embodiment. FIG. 2 is a schematic cross-sectional view showing the configuration of a liquid crystal display panel. FIG. 3 is a partial plan view of the wiring portion and the segment electrode. FIG. 4 is a diagram for explaining a connection state between each wiring portion and each segment electrode. FIG. 5 is a wiring diagram of the liquid crystal display device. 6 (A) and 6 (B) are plan views for explaining a specific example of the liquid crystal display device. FIG. 7 is a wiring diagram of a simple matrix type liquid crystal display device having a structure in which general striped electrodes intersect with each other. FIG. 8 is a connection diagram of a configuration example in which the wiring portion and the segment electrode are provided in the same layer without being made into two layers and driven by 1/2 duty. FIG. 9 is a connection diagram of a configuration example in which the wiring portion and the segment electrode are provided in two layers and driven by 1/2 duty. FIG. 10A is a diagram for explaining drive data used in the liquid crystal display device having the general configuration shown in FIG. 7. FIG. 10B is a diagram for explaining the drive data obtained by converting the drive data shown in FIG. 10A so as to be applicable to the liquid crystal display device having the configuration shown in FIG. FIG. 11A is a diagram showing a waveform diagram when the drive data shown in FIG. 10A is supplied by clock-synchronous serial communication. FIG. 11B is a diagram showing a waveform diagram when the drive data shown in FIG. 10B is supplied by clock-synchronous serial communication. 12 (A) and 12 (B) are views showing the configuration of the liquid crystal display device of the modified embodiment.

FIG. 1 is a diagram showing a configuration of a liquid crystal display device according to an embodiment. The liquid crystal display device shown in FIG. 1 is a liquid crystal display panel (liquid crystal display element) 1 having pixel portions arranged in a matrix, and a liquid crystal driver that supplies a voltage for driving each pixel portion of the liquid crystal display panel 1. 2 and a microcomputer 3 that supplies a signal corresponding to the image to be displayed to the liquid crystal driver 2 are included. The liquid crystal driver 2 has a common driver and a segment driver.

The liquid crystal display panel 1 has a plurality of pixel portions that can be individually controlled, and the light transmission state (transmittance) of each pixel portion according to the magnitude of the voltage applied to the liquid crystal layer given by the liquid crystal driver 2. Is variably controlled. A display image is formed by irradiating the liquid crystal display panel 1 with light from a light source (not shown).

FIG. 2 is a schematic cross-sectional view showing the configuration of a liquid crystal display panel. As shown in FIG. 2, the liquid crystal display panel 1 has a first substrate 11 and a second substrate 12 arranged to face each other, a plurality of wiring portions 13, an insulating film 14, a plurality of segment electrodes (first electrodes) 15, and a first. It is composed of an alignment film 16, a plurality of common electrodes (second electrodes) 17, a second alignment film 18, a liquid crystal layer 19, a pair of polarizing plates 21 and 22, and optical compensating plates 23 and 24. Although only one of the common electrodes 17 is shown in FIG. 1, a plurality of common electrodes 17 are actually formed, and they are arranged along the direction orthogonal to the paper surface of FIG.

The first substrate 11 and the second substrate 12 are, for example, rectangular substrates in a plan view, and are arranged so as to face each other. As each substrate, for example, a transparent substrate such as a glass substrate or a plastic substrate can be used. A plurality of spherical spacers made of, for example, resin are dispersedly arranged between the first substrate 11 and the second substrate 12, and the spacers keep the substrate gap at a desired size (for example, about several μm). There is. A columnar spacer made of resin may be used instead of the spherical spacer.

Each wiring portion 13 is arranged on one surface side of the first substrate 11, that is, on the first substrate 11 side of each segment electrode 15. Each segment electrode 15 is provided on one surface side of the first substrate 11 above the insulating film 14. Each segment electrode 15 is physically and electrically connected to any wiring portion 13 via a through hole (opening) 14a provided in the insulating film 14. Each wiring portion 13 and each segment electrode 15 are configured by appropriately patterning a transparent conductive film such as indium tin oxide (ITO).

The insulating film 14 has translucency, and is provided on one side of the first substrate 11 so as to cover the upper side of each wiring portion 13. The insulating film 14 is, for example, an oxide film or a nitride film such as a SiO ₂ film or a SiON film, and can be formed by a vapor phase process such as a sputtering method or a solution process. An organic insulating film may be used as the insulating film 14. The film thickness of the insulating film 14 is preferably, for example, about 0.4 μm to 1.5 μm. Further, the dielectric constant of the insulating film 14 is preferably higher, for example, 4 or more, and further preferably 8 or more.

Each common electrode 17 is configured by appropriately patterning a transparent conductive film such as indium tin oxide (ITO). The pixel portion described above is formed in each of the overlapping regions of the common electrode 17 and the segment electrode 15.

The first alignment film 16 is provided on the upper side of the insulating film 14 so as to cover each segment electrode 15 on one surface side of the first substrate 11. The second alignment film 18 is provided so as to cover each common electrode 17 on one surface side of the second substrate 12.

As each of the first alignment film 16 and the second alignment film 18, for example, a vertical alignment film that regulates the alignment state of the liquid crystal layer 19 to vertical alignment is used. Each alignment film is subjected to a uniaxial alignment treatment such as a rubbing treatment, and has a uniaxial orientation regulating force that regulates the orientation of the liquid crystal molecules of the liquid crystal layer 19 in that direction. The direction of the alignment treatment for each alignment film is, for example, as shown on the left side of the figure, the direction of the alignment treatment for the first alignment film 16 is toward the front side of the paper surface, and the direction of the orientation treatment for the second alignment film 18. Is set in the direction toward the back of the page.

The liquid crystal layer 19 is arranged between the first substrate 11 and the second substrate 12. In the present embodiment, the liquid crystal layer 19 is constructed by using a nematic liquid crystal material having a negative dielectric anisotropy Δε and having fluidity. The liquid crystal layer 19 of the present embodiment is set so that the orientation direction of the liquid crystal molecules when no voltage is applied is substantially vertical orientation (for example, the pretilt angle is 89.7 °). The configuration of the liquid crystal layer 19 is not limited, and for example, a nematic liquid crystal material having a positive dielectric anisotropy Δε may be used, or the initial orientation may be TN orientation or the like.

The pair of polarizing plates 21 and 22 are arranged so as to sandwich the first substrate 11 and the second substrate 12. The polarizing plate 21 is arranged outside the first substrate 11, and the polarizing plate 22 is arranged outside the second substrate 12. The polarizing plates 21 and 22 are arranged so that, for example, their polarization axes are substantially orthogonal to each other and an angle of approximately 45 ° with respect to the orientation processing direction. As the polarizing plates 21 and 22, for example, an absorbent polarizing plate made of a general organic material (iodine-based or dye-based) can be used. Further, when it is desired to emphasize heat resistance, it is also preferable to use a wire grid type polarizing plate. The wire grid type polarizing plate is a polarizing plate formed by arranging ultrafine wires made of a metal such as aluminum. Further, the absorption type polarizing plate and the wire grid type polarizing plate may be used in combination.

The optical compensation plate 23 is arranged between the first substrate 11 and the polarizing plate 21. The optical compensation plate 24 is arranged between the second substrate 12 and the polarizing plate 22. The optical compensation plates 23 and 24 are for compensating the viewing angle characteristics of the liquid crystal display panel 1, and for example, a retardation plate is used.

FIG. 3 is a partial plan view of the wiring portion and the segment electrode. FIG. 3 shows a plan view of the first substrate 11 from above. As shown in the figure, each segment electrode 15 is provided in a rectangular shape. The difference from a general simple matrix type liquid crystal display panel is that the segment electrodes 15 are physically separated from each other. The segment electrodes 15 are arranged along the X direction and the Y direction in the drawing, and are arranged in a matrix as a whole. The shape of the segment electrode 15 is not limited, and may be a circle, a polygon such as a triangle or a pentagon, in addition to the rectangular shape (square shape) in the illustrated example.

Each wiring portion 13 is provided in a strip shape and extends in the Y direction shown in the drawing. As described above, each wiring portion 13 is arranged so as to overlap each segment electrode 15 in a plan view via the insulating film 14. In the illustrated example, four wiring portions 13 extending along the Y direction are arranged so as to overlap one of an electrode row consisting of each segment electrode 15 also arranged along the Y direction. Further, each segment electrode 15 is connected to any one of the four overlapping wiring portions 13 in a plan view via a through hole 14a.

FIG. 4 is a diagram for explaining a connection state between each wiring portion and each segment electrode. Here, as an example, it is assumed that eight wiring portions 13 extend along the Y direction and are arranged adjacent to each other in the X direction. Further, here, in order to make it easy to distinguish each wiring portion 13, each is referred to as a wiring portion S1, S2, S3, S4, S5, S6, S7, S8. As shown in the figure, the four wiring portions S1, S2, S3, and S4 are associated with the electrode rows of the respective segment electrodes 15 in one row arranged along the Y direction, and each segment of the one electrode row. It is arranged so as to overlap the electrode 15.

Of the segment electrodes 15 in one electrode row, the wiring portions S1 are every three (four), such as the first segment electrode 15 on one end side, the fifth segment electrode 15 from one end side, and so on. Each) is connected to each segment electrode 15 via a through hole 14a of the insulating film 14. Similarly, among the segment electrodes 15 in one electrode row, the wiring unit S2 has every three segments such as the second segment electrode 15 from one end side, the sixth segment electrode 15 from one end side, and so on. Is connected to each segment electrode 15 via a through hole 14a of the insulating film 14.

Similarly, among the segment electrodes 15 in one electrode row, the wiring unit S3 has every three segments such as the third segment electrode 15 from one end side, the seventh segment electrode 15 from one end side, and so on. Is connected to each segment electrode 15 via a through hole 14a of the insulating film 14. Similarly, among the segment electrodes 15 in one electrode row, the wiring unit S4 has every three segments such as the fourth segment electrode 15 from one end side, the eighth segment electrode 15 from one end side, and so on. Is connected to each segment electrode 15 via a through hole 14a of the insulating film 14.

The four wiring portions S5, S6, S7, and S8 are associated with each segment electrode 15 of another one electrode row arranged along the Y direction, and overlap with each segment electrode 15 of this one electrode row. It is arranged like this. The correspondence between the wiring units S5 to S8 and the segment electrodes 15 is the same as in the case of the wiring units S1 to S4 described above. Although FIG. 4 shows a state in which every three wiring portions S1 to S8 are connected to each segment electrode 15, the number of wiring portions S1 to S8 may be every other or more. It is preferably between every other and every eight.

Further, as shown in the drawing, the common electrodes 17 extend in a band shape along the X direction, and are arranged adjacent to each other along the Y direction. Each common electrode 17 is arranged so as to overlap with four segment electrodes 15 of the segment electrodes 15 in the electrode rows of the first row and the second row, respectively. By doing so, if the number of common electrodes 17 is N, 1 / N duty drive can be performed. For example, when the wiring portion S1 is selected, by applying a voltage to each common electrode 17, each segment electrode 15 (first, fifth, ...) Corresponding to the wiring portion S1. A voltage can be applied between the segment electrode 15) and the common electrode 17, and a voltage can be applied to the liquid crystal layer 19 between them. The same applies to the other wiring portions S2 and the like.

Note that FIG. 4 shows two rows of segment electrodes 15 (that is, two rows of electrodes) for the sake of simplicity, but as shown in FIG. 5, the row of electrodes 15 of the segment electrodes 15 is oriented in the X direction. The number of pixel portions can be increased by arranging a plurality of pixels adjacent to each other along. Even in that case, similarly to the above, by sequentially selecting each wiring portion S1 and the like and applying a voltage between the wiring portions S1 and the like, the voltage can be applied to the liquid crystal layer 19 between them. In the connection diagram of the example shown in FIG. 5, 32 segment electrodes 15 (32 dots) are arranged along the Y direction to form one electrode row, and a plurality of such electrode rows are arranged in the X direction. It is shown for the case where (for example, 50) are arranged. Four wiring portions 13 are associated with each electrode row of the segment electrodes 15. Further, eight common electrodes 17 (C1, C2, ... C8) are provided, and four rows of segment electrodes 15 are associated with each of them.

6 (A) and 6 (B) are plan views for explaining a specific example of the liquid crystal display device. The liquid crystal display device 100 shown in FIG. 6A has 32 × 50 pixel portions in which the upper display area 110a and the lower display area 110b in the drawing each have a configuration as shown in FIG. I have. The 32 × 50 pixel portions of the display area 110a are driven by the liquid crystal driver 102a arranged on the substrate on the upper side in the drawing with 1/8 duty. The 32 × 50 pixel portions of the display area 110b are driven by the liquid crystal driver 102b arranged on the substrate on the lower side in the drawing with 1/8 duty. With such a configuration, a matrix-type liquid crystal display device 100 having 64 × 100 pixel portions can be obtained.

In the liquid crystal display device 200 shown in FIG. 6B, the display area 210a on the upper left side, the display area 210b on the lower left side, the display area 210c on the upper right side, and the display area 210d on the lower right side in the figure are each described in FIG. It is provided with 32 × 50 pixel portions having a configuration as shown in. Liquid crystal drivers 202a, 202b, 202c, and 202d are associated with the display areas 210a, 210b, 210c, and 201d, respectively, and are driven by 1/8 duty, respectively. With such a configuration, it is possible to obtain a matrix-type liquid crystal display device 200 having 64 × 200 pixel portions.

FIG. 7 is a wiring diagram of a simple matrix type liquid crystal display device having a structure in which general striped electrodes intersect with each other. FIG. 8 is a connection diagram of a configuration example in which the wiring portion and the segment electrode are provided in the same layer without being made into two layers and driven by 1/2 duty. FIG. 9 is a connection diagram of a configuration example in which the wiring portion and the segment electrode are provided in two layers and driven by 1/2 duty. The effect of having two layers of the wiring portion and the segment electrode will be described with reference to each figure. Here, as an example, consider a liquid crystal display device having a plurality of pixel units G1, G2, ... G40, and these pixel units are arranged in 8 rows and 5 columns.

In the liquid crystal display device of the configuration example shown in FIG. 7, the pixel portion is configured by intersecting the eight common electrodes C1 to C8 and the five segment electrodes S1 to S5, and is driven by 1/8 duty. On the other hand, in the liquid crystal display device of the comparative example shown in FIG. 8, for example, the wiring unit S1 is connected to the pixel unit G1 and the pixel unit G8 with respect to the pixel units G1, G2, ... G8 in the first row. The wiring unit S2 is connected to the pixel unit G2 and the pixel unit G7. The same applies to the relationship between the other wiring portions and the pixel portions. Further, the common electrode C1 is associated with each pixel portion from the first row to the fourth row, and the common electrode C2 is associated with each pixel portion from the fifth row to the eighth row. Therefore, the duty is reduced as compared with the liquid crystal display device illustrated in FIG. 7. However, since the wiring portion and the segment electrode are provided in the same layer, the wiring portions S1, S2 ... S20 are arranged between the respective pixel portions as schematically shown in the drawing. Become. For this reason, the mutual spacing between the pixel portions is widened, resulting in deterioration of display quality and readability of displayed characters and the like.

On the other hand, as shown in FIG. 9, since the wiring portion and the segment electrode are provided in two layers, the wiring portions S1, ... S20 can be arranged so as to overlap each pixel portion. The mutual spacing between the pixel portions can be narrowed. Further, as compared with the liquid crystal display device having a configuration in which the general striped electrodes intersecting each other as shown in FIG. 7, the duty can be further reduced, so that the contrast can be improved. Although the case of performing detail drive is illustrated here, static drive can also be performed by using one common electrode and individually associating a wiring portion with each segment electrode facing the common electrode.

FIG. 10A is a diagram for explaining drive data used in the liquid crystal display device having the general configuration shown in FIG. 7. FIG. 10B is a diagram for explaining the drive data obtained by converting the drive data shown in FIG. 10A so as to be applicable to the liquid crystal display device having the configuration shown in FIG. As shown in FIG. 10A, in a general simple matrix type liquid crystal display device, for example, the segment electrode SEG1 is selected by the liquid crystal driver, and the corresponding pixel portions G1, G2, ... G8 are driven. Data is given to the common electrodes COM1, COM2, ... COM8. Similarly, the segment electrode SEG2 is selected, and the drive data of the corresponding pixel portions G9, G10, ... G16 are given to the common electrodes COM1, COM2, ... COM8.

FIG. 11A shows a waveform diagram when the drive data at this time is supplied by clock-synchronous serial communication. As shown in the figure, when the CS is in the low active state, the liquid crystal driver is selected, and the input of the serial data SI and the input of the serial clock SCL can be accepted. The serial data SI is taken in from the input terminal in the order of D7, D6, ... D0 at the rising edge (or falling edge) of the serial clock, and is converted into parallel data at the rising edge of the eighth serial clock. This parallel data is displayed data when AO is HIGH and commands when LOW. As the serial data, the drive data corresponding to the pixel units G8, G7, ... G1 are input in this order.

In order to apply the above drive data to a liquid crystal display device having each independent segment electrode and two common electrodes as shown in FIG. 9, it is necessary to perform data conversion. Specifically, as shown in FIG. 10B, for example, when the segment electrode SEG1 is selected, the drive data of the corresponding pixel portions G1 and G5 are given to the common electrodes COM1 and COM2, and then When the segment electrode SEG2 is selected, the drive data of the corresponding pixel portions G2 and G6 are given to the common electrodes COM1 and COM2, and then when the segment electrode SEG1 is selected, the corresponding pixel The drive data of the parts G3 and G7 are given to the common electrodes COM1 and COM2, and then when the segment electrode SEG2 is selected, the drive data of the corresponding pixel parts G4 and G8 are sent to the common electrodes COM1 and COM2. Data conversion is performed as given.

FIG. 11B shows a waveform diagram when the drive data at this time is supplied by clock-synchronous serial communication. As shown in the figure, as the serial data, the drive data corresponding to the pixel units G8, G4, G7, G3, G6, G2, G5, and G1 are input in this order. That is, the order of serial data is converted. This data conversion process is performed, for example, by the above-mentioned microcomputer 3 or by the liquid crystal driver 2. By performing such data conversion, the driving data for general simple matrix type applications can be applied to the liquid crystal display device of the present embodiment.

According to the above-described embodiment, it is possible to obtain a high-resolution and high-contrast liquid crystal display device with a simple structure similar to the simple matrix method. Further, according to the above embodiment, the number of common electrodes can be reduced, so that the frame of the liquid crystal display device can be narrowed.

The present invention is not limited to the contents of the above-described embodiment, and can be variously modified and implemented within the scope of the gist of the present invention. For example, in the above embodiment, a liquid crystal display device in which each segment electrode is separated and independently configured has been illustrated, but the present invention is applied to a general simple matrix type liquid crystal display device in which striped electrodes intersect with each other. It is also possible to do. Examples of the configuration are shown in FIGS. 12 (A) and 12 (B).

FIG. 12A is a diagram showing a configuration of a first substrate constituting a liquid crystal display device. FIG. 12B is a diagram showing a configuration of a second substrate constituting the liquid crystal display device. The overall configuration is the same as that shown in FIG. The first substrate 311 shown in FIG. 12A is provided with a plurality of striped segment electrodes 315 extending in the vertical direction and arranged adjacent to each other in the horizontal direction in the drawing, and these segment electrodes. On the lower layer side of the 315, each wiring portion 313 for connecting each segment electrode 315 and the liquid crystal driver 302 is provided. Similarly, the second substrate 312 shown in FIG. 12B is provided with a plurality of striped common electrodes 317 extending in the left-right direction in the drawing and arranged adjacent to each other in the up-down direction. On the lower layer side of these common electrodes 317, wiring portions 325 for connecting each common electrode 317 and the liquid crystal driver 302 are provided. The specific method of forming the two layers of each common electrode 317 and each wiring portion 325 is the same as that of each segment electrode 15 and each wiring portion 13 of the above-described embodiment (see FIGS. 2 and 3). According to the liquid crystal display device having such a first substrate 311 and a second substrate 312, in addition to the same effect as that of the above embodiment, it is necessary to route the wiring portion corresponding to the common electrode to the outside of the display area of the liquid crystal display device. Since there is no such thing, it is possible to obtain the effect that the frame can be narrowed.

1: Liquid crystal display panel, 2: Liquid crystal driver, 3: Microcomputer, 11: 1st board, 12: 2nd board, 13: Wiring part, 14: Insulating film, 14a: Through hole, 15: Segment electrode, 16: No. 1 alignment film, 17: common electrode, 18: second alignment film, 19: liquid crystal layer 19, 21, 22,: polarizing plate, 23, 24: optical compensation plate

Claims (6)

The first substrate and the second substrate arranged to face each other,
A liquid crystal layer provided between the first substrate and the second substrate,
A plurality of first electrodes provided on the first substrate and separated from each other,
A plurality of wiring portions provided on the first substrate and arranged closer to the first substrate than the plurality of first electrodes.
An insulating film provided between the plurality of first electrodes and the plurality of wiring portions,
At least one second electrode provided on the second substrate and arranged to face the plurality of first electrodes,
Including
The plurality of first electrodes are arranged in a row along the first direction in a plan view.
The plurality of wiring portions extend along the first direction in a plan view, and are arranged so as to overlap with the plurality of first electrodes in a plan view, and each of the plurality of wiring portions is arranged with any one of the plurality of first electrodes. Connected through the opening of the insulating film,
Liquid crystal display device. The first substrate and the second substrate arranged to face each other,
A liquid crystal layer provided between the first substrate and the second substrate,
A plurality of first electrodes provided on the first substrate and separated from each other,
A plurality of wiring portions provided on the first substrate and arranged closer to the first substrate than the plurality of first electrodes.
An insulating film provided between the plurality of first electrodes and the plurality of wiring portions,
A plurality of second electrodes provided on the second substrate and arranged to face the plurality of first electrodes,
Including
The plurality of wiring portions extend along the first direction in a plan view, and are arranged so as to overlap with the plurality of first electrodes in a plan view.
The plurality of first electrodes are arranged in a row in the first direction in a plan view, and every n first electrodes (where n is a natural number of 1 or more) along the first direction. Shares one of the plurality of wiring portions, and is connected to the shared one wiring portion via an opening of the insulating film.
The plurality of second electrodes are associated with each of the (n + 1) first electrodes that are continuously arranged along the first direction among the plurality of first electrodes, and are associated with each other in the first direction. Arranged next to each other along
Liquid crystal display device. The opening of the insulating film is provided at a position where it overlaps with any one of the plurality of first electrodes.
The liquid crystal display device according to claim 1 or 2. It has a plurality of electrode rows including the plurality of first electrodes.
The liquid crystal display device according to any one of claims 1 to 3. The plurality of electrode rows are arranged adjacent to each other in a second direction intersecting the first direction in a plan view.
The liquid crystal display device according to claim 4. By sequentially selecting the plurality of wiring portions one by one and supplying a voltage to the selected wiring portions and supplying a voltage to each of the plurality of second electrodes, the wiring portions are connected to the selected wiring portions. A driver that applies a driving voltage to the liquid crystal layer between each of the first electrodes and the plurality of second electrodes is further included.
The liquid crystal display device according to any one of claims 2 to 5.

Images