JP2022167026A - Liquid crystal panel - Google Patents

Abstract

To provide a liquid crystal panel with which constraints in manufacturing are fewer.SOLUTION: A liquid crystal panel 10 comprises a glass substrate 11 and a glass substrate 43 facing a first substrate across a liquid crystal layer 40. On the glass substrate 11 are provided, in a prescribed direction, a plurality of regions A1, A2, A3 that include four or more first electrodes and a high resistance film laminated on the upper side of the first electrodes across an insulating layer 12. The high resistance films 31, 32, 33 provided in each of the regions A1, A2, A3 that are adjacent in the prescribed direction are arranged in the prescribed direction with spaces having a width D1. The resistance film of each of the regions A1, A2, A3 covers the first electrode of each of the regions A1, A2, A3. A common electrode 42 is provided on the glass substrate 43 along a plate surface. The high resistance films 31, 32, 33 and the common electrode 42 face each other across the liquid crystal.SELECTED DRAWING: Figure 2

Description

The present disclosure relates to liquid crystal panels.

A configuration is known in which a liquid crystal panel functions like a Fresnel lens by utilizing light refraction by liquid crystal molecules (for example, Patent Document 1).

JP 2018-36483 A

In the liquid crystal panel described in Patent Document 1, a high-resistance film having higher electric resistance than the electrodes is further provided between the electrodes facing each other with the liquid crystal interposed therebetween. Here, if the electrodes whose potentials are individually controlled in order to make the liquid crystal panel function as a Fresnel lens are provided in a range where there is no high resistance film when the liquid crystal panel is viewed from above, the manufacturing process of the high resistance film In such cases, the electrodes may be affected by corrosion or the like. In order to avoid such an influence, it is necessary to select an etchant that does not affect the electrode in the manufacturing process of the high resistance film, or to avoid the influence of the composition used in the manufacturing process of the high resistance film as the material of the electrode. It is necessary to select the material. As described above, the liquid crystal panel described in Patent Document 1 cannot ignore the restrictions in manufacturing.

The present disclosure has been made in view of the above problems, and an object thereof is to provide a liquid crystal panel with fewer restrictions in manufacturing.

A liquid crystal panel according to an aspect of the present disclosure includes a first substrate and a second substrate facing the first substrate with liquid crystal interposed therebetween, and the first substrate has four or more liquid crystals arranged in a predetermined direction. A plurality of regions including one electrode and a resistive film laminated above the first electrode with an insulating layer interposed therebetween are provided in the predetermined direction, and provided in each of the regions adjacent to each other in the predetermined direction. The resistive films are spaced apart in the predetermined direction, the resistive film in each of the regions covers the first electrode in each of the regions, and the second substrate includes: A second electrode is provided, and the resistive film and the second electrode face each other with the liquid crystal interposed therebetween.

FIG. 1 is a schematic configuration diagram of a liquid crystal panel as Embodiment 1. FIG. FIG. 2 is a cross-sectional view taken along line PP of FIG. FIG. 3 is a plan view showing the shape and arrangement of the electrodes 211, 212, . FIG. 4 is a plan view showing the shape and arrangement of electrodes 2m1, 2m2, . FIG. 5 is a graph showing the relationship between the distance from the optical center C of the concentric circular regions A1, A2, and A3 and the refractive index difference in the specific example. FIG. 6 is a schematic diagram showing an example of the relationship between the radial positions of adjacent high-resistance films and the radial positions of four or more electrodes. FIG. 7 is a schematic diagram showing an example of the relationship between the radial positions of adjacent high-resistance films and the radial positions of four or more electrodes. FIG. 8 is a graph showing equipotential surfaces when there is a high resistance film. FIG. 9 is a graph showing equipotential surfaces without the high resistance film. FIG. 10 is a schematic configuration diagram of a liquid crystal panel as a second embodiment. FIG. 11 is a schematic configuration diagram of a glass substrate. FIG. 12 is a cross-sectional view taken along line QQ of FIG. 13 is a cross-sectional view taken along the line RR of FIG. 11. FIG. FIG. 14 is a graph showing an example of the relationship between the distance from one end in the row direction of the extended electrodes and the refractive index difference. FIG. 15 is a graph showing an example of the relationship between the distance from one end in the row direction of the extended electrodes and the refractive index difference. FIG. 16 is a graph showing an example of the relationship between the distance from one end in the row direction of the extended electrodes and the refractive index difference. FIG. 17 is a schematic configuration diagram of a Fresnel lens panel that can accommodate both P-waves and S-waves. FIG. 18 is a diagram showing an example of alignment directions of liquid crystal molecules by a first alignment film and a second alignment film provided on the first panel and the second panel. FIG. 19 is a schematic configuration diagram of a liquid crystal panel as a modified example of the second embodiment.

Each embodiment of the present disclosure will be described below with reference to the drawings. It should be noted that the disclosure is merely an example, and those skilled in the art can easily conceive of appropriate modifications while maintaining the gist of the invention are, of course, included in the scope of the present disclosure. In addition, in order to make the description clearer, the drawings may schematically show the width, thickness, shape, etc. of each part compared to the actual embodiment, but this is only an example, and the interpretation of the present disclosure is not intended. It is not limited. In addition, in this specification and each figure, the same reference numerals may be given to the same elements as those described above with respect to the existing figures, and detailed description thereof may be omitted as appropriate.

(Embodiment 1)
FIG. 1 is a schematic configuration diagram of a liquid crystal panel 10 as Embodiment 1. As shown in FIG. The liquid crystal panel 10 is a circular liquid crystal panel centered on the optical center C in a plan view. A planar viewpoint is a viewpoint from which the plate surface of the liquid crystal panel is viewed from the front. Here, one of two directions along the plate surface is defined as a first direction Dx, and the other is defined as a second direction Dy. The first direction Dx and the second direction Dy are orthogonal. A direction orthogonal to the plate surface is defined as a third direction Dz. Henceforth, when described as a plan view, it refers to a drawing in which the plate surface is viewed from the front.

The liquid crystal panel 10 has a plurality of concentric regions. Each of the plurality of concentric circular regions is a circular or arc-shaped region with the optical center C as the center. FIG. 1 illustrates a circular concentric area A1 and arcuate concentric areas A2, A3, A4, A5, and A6 as examples of the plurality of concentric areas. The concentric area A1 is a circular area containing the optical center C in a plan view. The concentric circular area A2 is an arcuate area positioned on the outer peripheral side of the concentric circular area A1 and on the inner peripheral side of the concentric circular area A3. The number of concentric circular regions is not limited to this. Hereinafter, the number of a plurality of concentric circular regions may be referred to as h. h is a natural number of 2 or more. Among the plurality of (k) concentric circular regions, the m-th concentric circular region counting from the optical center C is defined as concentric circular region Am. m is a natural number less than or equal to h. When m≧2, the concentric area Am is an arcuate area positioned on the outer peripheral side of the concentric area A(m−1). When m≧3, the concentric circular area A(m−1) is an arcuate area positioned on the outer peripheral side of the concentric circular area A(m−2) and on the inner peripheral side of the concentric circular area Am.

FIG. 2 is a cross-sectional view taken along line PP of FIG. As shown in FIG. 2, the liquid crystal panel 10 includes a glass substrate 11, an electrode 2mk, an insulating layer 12, an alignment film 13, a liquid crystal layer 40, an alignment film 41, a common electrode 42, a glass substrate 43, and a glass substrate 11 along the third direction Dz. It has a laminated structure in which the layers are laminated in the order of Hereinafter, the glass substrate 11 side of the laminated structure will be referred to as the lower side, and the glass substrate 43 side of the laminated structure will be referred to as the upper side.

The glass substrate 11 and the glass substrate 43 are plate-shaped substrates having translucency. Four or more electrodes are provided on the glass substrate 11 . Specifically, four or more electrodes are provided in each of the plurality of concentric regions described above. Hereinafter, the number of electrodes provided in one concentric area may be referred to as k. k is a natural number of 4 or more. As an example of the four or more electrodes, in FIG. 2, electrodes 211, 212, . 222, . . . , 22(k−1), 22k and electrodes 231, 232, . Similarly, electrodes 2m1, 2m2, . A plurality of electrodes provided in one concentric area are arranged in order of electrodes 2m1, 2m2, .

FIG. 3 is a plan view showing the shape and arrangement of the electrodes 211, 212, . The electrode 211 is a circular electrode with the optical center C as the center. The electrode 212 is an arc-shaped electrode centered on the optical center C and surrounding the outside of the electrode 211 . The electrodes 211 and 212 are separated from each other in plan view. There is an arcuate gap between the electrodes 211 and 212 . Here, among a predetermined number (k) of four or more electrodes provided in one concentric area Am, the j-th electrode counted from the optical center C is defined as electrode 2mj. Therefore, when j≧2, the electrode 21j among the electrodes 211, 212, . 1) and an arc-shaped electrode surrounding the outside of 21(j-1) with a gap between them. In addition, when j≧3, 21(j−1) is centered on the optical center C, is spaced from 21(j−2) and electrode 21j, and is outside 21(j−2) and It is an arc-shaped electrode located inside the electrode 21j. j is a natural number equal to or smaller than k.

FIG. 4 is a plan view showing the shape and arrangement of electrodes 2m1, 2m2, . The electrode 2m1 is an arc-shaped electrode centered on the optical center C and surrounding the outside of the electrode 2(m−1)k with a gap between it and the electrode 2(m−1)k. When k≧2, the electrode 2mj is an arc-shaped electrode centered on the optical center C and surrounding the electrode 2m(j−1) with a gap between it and the electrode 2m(j−1). is. Further, when k≧3, the electrode 2m (j−1) is centered on the optical center C, and the electrode 2m (j−2) is spaced apart from the electrode 2m (j−2) and the electrode 2mj. and inside the electrode 2mj.

In addition, the outermost electrode provided in the inner concentric circular region of the two concentric circular regions adjacent to each other in the radial direction about the optical center C, and the outermost concentric circular region of the two concentric circular regions. It is separated from the provided innermost peripheral electrode with an arc-shaped gap centered on the optical center C. FIG. As a specific example of this, in FIG. 2, the separation between the electrode 21k and the electrode 221 and the separation between the electrode 22k and the electrode 231 are shown in sectional views. Hereinafter, the term "radial direction" refers to the radial direction centered on the optical center C unless otherwise specified.

The insulating layer 12 is an insulating layer laminated on the glass substrate 11 to cover the upper side of the glass substrate 11 and four or more electrodes provided on the glass substrate 11 . A high resistance film layer is formed above the insulating layer 12 and below the alignment film 13 . The high resistance film layer is provided independently in each of the plurality of concentric circular regions described above. The term "high resistance film" indicates that the film has relatively high electrical resistance compared to the electrode 2mj. FIG. 2 illustrates high resistance films 31, 32, and 33 as components included in the high resistance film layer. The high resistance film 31 is provided within the concentric area A1. The high resistance film 31 is a circular high resistance film that covers the electrodes 211, 212, . The high resistance film 32 is provided within the concentric area A2. The high resistance film 32 is an arcuate high resistance film that covers the electrodes 221, 222, . Similarly, the high resistance film 3m is provided within the concentric area Am. The high resistance film 3m is an arcuate high resistance film that covers the electrodes 2m1, 2m2, . The high resistance film 3(m−1) and the high resistance film 3m are separated from each other with an arcuate gap around the optical center C. As shown in FIG. In FIG. 2, the gap is illustrated by showing the radial width D1 of the arcuate gap.

The alignment film 13 is an alignment film laminated on the insulating layer 12 and the high resistance film layer. The alignment film 41 is an alignment film facing the alignment film 13 with the liquid crystal layer 40 interposed therebetween. The alignment films 13 and 41 determine the initial alignment of liquid crystal molecules contained in the liquid crystal layer 40 . The initial orientation refers to the orientation of the liquid crystal molecules when there is no potential difference between the electrode 2mj and the common electrode . The common electrode 42 is a thin-film electrode laminated on the alignment film 41 . A glass substrate 43 is stacked above the common electrode 42 . In other words, the common electrode 42 and the alignment film 41 are laminated on one surface of the glass substrate 43, and the alignment film 41 is provided on the lower side. Although not shown, a seal is provided along the arc of the outer periphery of the liquid crystal panel 10 shown in FIG. 1 so as to seal the sides of the liquid crystal layer 40 .

The liquid crystal panel 10 of the embodiment is a twisted nematic (TN) liquid crystal panel. Therefore, the initial alignment direction determined by the alignment film 13 and the initial alignment direction determined by the alignment film 41 intersect in a plan view. In FIG. 2, the liquid crystal layer 40 includes the initial alignment direction determined by the alignment film 13 along the first direction Dx and the initial alignment direction determined by the alignment film 41 along the second direction Dy. The liquid crystal molecules are illustrated by schematically showing them with ellipses.

The common electrode 42 is provided to have a ground potential. On the other hand, during operation of the liquid crystal panel 10, the potential of each electrode 2mj is individually controlled. Hereinafter, when four or more electrodes are described, the electrodes 2m1, 2m2, . Specifically, four or more electrodes are connected to a driver circuit (not shown). The driver circuit individually controls the potentials of the four or more electrodes by individually applying drive signals to the four or more electrodes. The liquid crystal molecules contained in the liquid crystal layer 40 are controlled so as to be oriented according to the potential difference between the liquid crystal panel 10 and the common electrode 42 . Note that the common electrode 42 may be configured to be applied with a potential other than the ground potential, such as a predetermined fixed potential. For example, when the potential of the voltage applied to each electrode swings with a predetermined potential difference, it is possible to set the intermediate potential between these potential differences.

The electric potential of each of the four or more electrodes provided in one concentric area is controlled so that it becomes lower toward the inner side in the radial direction and higher toward the outer side. As a result, in the one concentric circular region, the angle between the third direction Dz and the passing direction of light traveling from the bottom to the top becomes smaller the closer to the inner side in the radial direction. In addition, in the one concentric area, the angle between the third direction Dz and the passing direction of light traveling from the bottom to the top increases as the area is closer to the outer side in the radial direction. This concept of potential control of the electrode 2mj is common to a plurality of concentric regions. That is, when the liquid crystal panel 10 operates, light incident from the bottom along the third direction Dz can pass straight or substantially straight to the innermost circumference of each concentric area. In addition, when the liquid crystal panel 10 is operated, the light incident from below along the third direction Dz increases the crossing angle with respect to the third direction Dz at a position closer to the outside of each concentric circular region, and is projected radially toward the focal point. A state occurs in which the direction of travel is changed to the direction to the inside of the and passes upward. Further, the direction of travel of the light that is diffused from the exit point that is located away from the liquid crystal panel 10 and that overlaps the optical center C in a plan view and is incident on the glass substrate 11 is concentric. By passing through the area, the light travels along the third direction Dz and is emitted from the glass substrate 43 side. In other words, the driver circuit described above controls the potentials of the four or more electrodes so that the orientation of the liquid crystal molecules contained in the liquid crystal layer 40 realizes such a traveling direction of light.

Here, as a specific example, the number (k) of electrodes provided in each concentric circular region is 4, and the radial width of each of the four or more electrodes centered on the optical center C is 20 micrometers (μm). ) will be described. In this case, the potential of the electrode 2m1 is 0 volts (V). Also, in this case, the potential of the electrode 2m2 is 2.3V. Also, in this case, the potential of the electrode 2m3 is 5.5V. Also, in this case, the potential of the electrode 2m4 is 8V. The potential of the common electrode 42 is 0 volt (V) because it is the ground potential.

FIG. 5 is a graph showing the relationship between the distance from the optical center C of the concentric circular regions A1, A2, and A3 and the refractive index difference in the specific example. The refractive index difference here refers to the magnitude of the change in the traveling direction of the light incident along the third direction Dz from the lower side of the liquid crystal panel 10 . That is, the larger the degree of change in which the crossing angle with respect to the third direction Dz changes in the radially inner direction toward the focal point until the traveling direction passes above the liquid crystal panel 10, the larger the refractive index difference. Become.

As shown by the graph G1 in FIG. 5, in each of the concentric circular regions A1, A2, and A3, in the specific example, the closer the radial distance is, the smaller the refractive index difference is. The difference is getting bigger. In a specific example, the refractive index difference increases from the inner side to the outer side in the radial direction within one concentric circular region. The refractive index difference is controlled so that the refractive index difference is reset to 0 at the innermost periphery of the region.

By controlling the potential of the electrode 2mj so as to establish the refractive index difference described with reference to FIG. It creates an optical effect like a lens that directs incoming light along direction Dz to a focal point. If this optical action is compared to the optical action of a lens, it is similar to the optical action of a lens whose lower side is flat and whose upper side is convex. In FIG. 2, dashed curves L1, L2, and L3 are shown for the purpose of schematically showing this optical effect. A dashed line L1 indicates an optical effect caused by controlling the orientation of the liquid crystal molecules contained in the liquid crystal layer 40 in the concentric area A1. A dashed line L2 indicates an optical effect caused by controlling the orientation of the liquid crystal molecules contained in the liquid crystal layer 40 in the concentric area A2. A dashed line L3 indicates an optical effect caused by controlling the orientation of the liquid crystal molecules contained in the liquid crystal layer 40 in the concentric area A3. The optical effects of the plurality of concentric regions schematically shown by dashed lines L1, L2 and L3 are substantially the same as the optical effects produced by a Fresnel lens. That is, the liquid crystal panel 10, which includes a plurality of concentric circular regions, operates to produce an optical effect similar to that of a Fresnel lens.

Note that, as schematically shown in FIGS. 1 and 2, among the plurality of concentric circular regions, the outermost concentric circular region has a smaller width in the radial direction. In accordance with the radial width of such concentric circular regions, the radial width of the high resistance films such as the high resistance films 31, 32, and 33 also varies depending on the high resistance provided in the outer concentric circular regions. The radial width of the membrane is smaller. Although concentric regions A1, A2, and A3 are shown in FIG. 2, the cross section of the concentric regions outside of concentric region A3 is also similar to concentric region A2, except that they are of smaller radial width. , and the concentric area A3.

In a specific example, the radial width of each of the four or more electrodes is a predetermined width (for example, 20 μm) regardless of the position where they are provided. Therefore, in the specific example, by narrowing the radial arrangement pitch of the four or more electrodes in the concentric circular region located on the outer side of the plurality of concentric circular regions, the radial width of each concentric circular region A corresponding arrangement of four or more electrodes is realized. Here, the positions of the four electrodes provided in each of the three concentric areas A (m−1), 2m, and 2(m+1) arranged in the radial direction are the distance from the optical center C (unit: nanometers (μm )). The position of the electrode here means the center position of the width of the electrode in the radial direction. The positions of the electrodes 2(m−1) 1, 2(m−1) 2 and the electrodes 2(m−1) 3, 2(m−1) 4 in the concentric area A(m−1) are described in order as follows: They are 3973 μm, 4219 μm, 5364 μm and 5575 μm. The positions of the electrodes 2m1, 2m2, 2m3 and 2m4 in the concentric area Am are 5610 μm, 5798 μm, 6673 μm and 6825 μm in order. The positions of electrodes 2(m+1)1, 2(m+1)2 and electrodes 2(m+1)3, 2(m+1)4 in the concentric area A(m+1) are 6860 μm, 7018 μm, 7755 μm, and 7878 μm, respectively. It is not necessary for the arrangement pitch to be uniform within one concentric area as in this example. At the arrangement pitch at which two of the four electrodes 2m1, 2m2, 2m3, and 2m4 are adjacent to each other, the arrangement pitch of the electrodes 2m2 and 2m3 is larger than the arrangement pitch of the electrodes 2m1 and 2m2 and the arrangement pitch of the electrodes 2m3 and 2m4. good.

Alignment films used in TN liquid crystal panels are used for the alignment films 13 and 41 . The common electrode 42 is provided as a translucent electrode like the four or more electrodes.

Note that if k=2, that is, if there are only two electrodes in one concentric circular region, the difference in refractive index between the concentric circular regions A1, A2, and A3 is monotonically represented by graph G2 shown in FIG. Become. On the other hand, as in Embodiment 1, k is a natural number of 4 or more, i.e., there are four or more electrodes in one concentric circular region, so that the arrangement direction of the four or more electrodes in each concentric circular region The change in the refractive index difference of the lens can be more easily approximated to a more ideal change in the refractive index difference for producing the optical action of a Fresnel lens.

Next, the radial positions of the high resistance films such as the high resistance film 3(m−1) and the high resistance film 3m, the electrodes 2(m−1) 1, . . . , 2(m−1)k and the electrodes The relationship between the radial positions of four or more electrodes such as 2m1, .

6 and 7 are schematic diagrams showing an example of the relationship between the radial positions of adjacent high resistance films 3(m−1) and 3m and the radial positions of four or more electrodes. As shown in FIGS. 6 and 7, any of the four or more electrodes is positioned between the high resistance film 3(m−1) and the high resistance film 3m provided in two concentric regions adjacent to each other in the radial direction. It is not provided at a position that overlaps with the gap in the plan view. 6 and 7 show that there is no electrode positioned inside the width D of the gap between the high resistance film 3(m−1) and the high resistance film 3m. That is, in the laminated structure of the liquid crystal panel 10, there is a high resistance film on the third direction Dz of four or more electrodes. In other words, the high resistance film is formed so as to cover the lower electrode 2mj in a plan view.

In addition, as shown in FIG. 6, the position of the inner peripheral side of the electrode located on the innermost periphery in the radial direction among the four or more electrodes provided in one concentric region, and the position of the inner peripheral side of the electrode The end position of the radially inner peripheral side of the high-resistance film provided in the region may match. In FIG. 6, the inner peripheral edge position of the electrode 2(m−1) 1 and the inner peripheral edge position of the high resistance film 3(m−1) match. In addition, the inner peripheral end position of the electrode 2m1 and the inner peripheral end position of the high resistance film 3m are matched.

In addition, as shown in FIG. 6, among the four or more electrodes provided in one concentric circular region, the position of the outer peripheral side of the electrode located on the outermost circumference in the radial direction and the position of the outer peripheral side of the one concentric circular region The end position of the provided high-resistance film on the outer peripheral side in the radial direction may match. In FIG. 6, the outer edge position of the electrode 2(m−1)k and the outer edge position of the high-resistance film 3(m−1) coincide. In addition, the edge position of the electrode 2mk on the outer peripheral side and the edge position of the high resistance film 3m on the outer peripheral side coincide with each other.

In the case of the configuration shown in FIG. 6, the width of the gap between the electrode 2(m−1)k provided in the concentric area A(m−1) and the electrode 2m1 provided in the concentric area Am is It matches the width D1 of the gap between the high resistance film 3(m−1) provided in A(m−1) and the high resistance film 3m provided in the concentric area Am.

In addition, as shown in FIG. 7, among the four or more electrodes provided in one concentric area, the innermost electrode located on the innermost circumference in the radial direction has an end position on the inner peripheral side of the one concentric area. It may be located on the outer peripheral side of the end position on the inner peripheral side in the radial direction of the high resistance film provided in the region. In FIG. 7, the inner peripheral end position of the electrode 2(m−1) 1 is located further outside than the inner peripheral end position of the high resistance film 3(m−1). In addition, the end position of the inner peripheral side of the electrode 2m1 is closer to the outer peripheral side than the end position of the inner peripheral side of the high resistance film 3m.

In addition, as shown in FIG. 7, among the four or more electrodes provided in one concentric circular region, the outer edge position of the electrode located on the outermost periphery in the radial direction is located in the one concentric circular region. It may be on the inner peripheral side of the end position of the provided high resistance film on the outer peripheral side in the radial direction. In FIG. 7, the edge position of the outer peripheral side of the electrode 2(m-1)k is located on the inner peripheral side of the edge position of the outer peripheral side of the high resistance film 3(m-1). In addition, the edge position of the outer peripheral side of the electrode 2mk is located on the inner peripheral side of the edge position of the outer peripheral side of the high resistance film 3m.

In the configuration shown in FIG. 7, the width of the gap between the electrode 2(m−1)k provided in the concentric area A(m−1) and the electrode 2m1 provided in the concentric area Am is It is larger than the width D1 between the high resistance film 3(m−1) provided in A(m−1) and the high resistance film 3m provided in the concentric area Am.

Note that the four or more electrodes are light-transmitting electrodes. Specifically, four or more electrodes are provided by laminating a thin translucent conductive film such as ITO (Indium Tin Oxide) or IZO (Indium Zinc Oxide) on the glass substrate 11 . The insulating layer 12 is provided by stacking an SiO (silicon oxide) or acrylic organic layer on the upper side of the glass substrate 11 and four or more electrodes. The high resistance film layer is provided by stacking ITO/SiO 2 on the insulating layer 12 . ^In a specific example, the electrical resistance value of ^high resistance films such as ^{high resistance} films 31, .

In a specific example, the four or more electrodes are ITO or the like, and the high resistance film layer is ITO/SiO2. That is, in a specific example, four or more electrodes and high resistance films such as the high resistance films 3(m−1) and 3m are formed of the same material. As a result, the film forming apparatus used in the process of forming four or more electrodes and the film forming apparatus used in the process of forming high resistance films such as the high resistance films 3(m−1) and 3m are made common. can. The productivity of the liquid crystal panel 10 can be further improved by using a common film forming apparatus. On the other hand, since the four or more electrodes and the high resistance film are formed of the same type of material, a high resistance film layer that requires the formation of a gap between the high resistance film 3(m−1) and the high resistance film 3m. There is a possibility that the etchant used in the formation process of will also affect the materials of the four or more electrodes. Here, as described with reference to FIGS. 6 and 7, the high resistance film is formed so as to cover four or more electrodes from a plan view. As a result, the etchant is prevented from reaching the four or more electrodes by being blocked by the high resistance film located above the four or more electrodes. Therefore, it is possible to reduce the influence of the step of forming a gap between the radially adjacent high resistance film 3(m−1) and the high resistance film 3m on four or more electrodes.

In addition, the presence of the high-resistance film makes it possible to more gently change the potential between four or more electrodes adjacent to each other in the radial direction. This will be described with reference to FIGS. 8 and 9. FIG.

FIG. 8 is a graph showing equipotential surfaces when the high resistance film 3m is present. In addition, in FIG. 8 and FIG. 9 to be described later, the interval between the electrodes adjacent to each other in the row direction among the four or more electrodes is shown as the interval G. As shown in FIG. In other words, in FIG. 8 and FIG. 9, which will be described later, the electrodes are arranged adjacent to each other in the row direction with the gap G interposed therebetween. In addition, different potentials are applied to the electrodes adjacent to each other with the gap G interposed therebetween. Specifically, 1V is applied to one electrode and 2V is applied to the other electrode. 8 and 9, the interval G is set to 2 mm.

When there is a high resistance film 3m, as shown in FIG. The potential slowly rises to 2V.

FIG. 9 is a graph showing equipotential surfaces without the high resistance film 3m. On the other hand, without the high resistance film 3m, the potential is lower than 1V in the range G between the electrode to which the potential of 1V is applied and the electrode to which the potential of 2V is applied, as shown in FIG. That is, the gap G is remarkably large with respect to the potential applied to these electrodes, and a potential trough occurs. When such potential troughs occur, the alignment control of the liquid crystal molecules that produces the optical action as a lens is not established in the range G, as schematically indicated by the dashed lines L1, L2, and L3 (see FIG. 2). occurs.

On the other hand, with the presence of the high resistance film 3m as in the first embodiment, it is possible to create a state in which the potential gradually rises from 1V to 2V from one side to the other side at the interval G. Therefore, the orientation control of the liquid crystal molecules that produces the optical action of the lens as schematically shown by the dashed lines L1, L2, and L3 (see FIG. 2) is established more reliably.

As described above, according to the first embodiment, the liquid crystal panel 10 includes a first substrate (glass substrate 11), a second substrate (glass substrate 43) facing the first substrate with liquid crystal (liquid crystal layer 40) interposed therebetween, Prepare. The first substrate has four or more first electrodes (electrodes 2m1, 2m2, . A plurality of regions (concentric regions Am) including a resistance film (high resistance film 3m) laminated on the electrode is provided in the predetermined direction. Further, the resistive films provided in each of the regions adjacent to each other in the predetermined direction are spaced apart in the predetermined direction. Also, the resistive film in each of the regions covers the first electrode in each of the regions. A second electrode (common electrode 42) is provided along the surface of the second substrate. Further, the resistive film and the second electrode face each other with the liquid crystal interposed therebetween.

As described above, the resistive film (high-resistive film 3m) is provided with the first electrodes (electrodes 2m1, 2m2, . . . , 2m(k- 1), 2mk). That is, the first electrode does not exist where the resistive film does not exist when viewed from above. Therefore, it is possible to suppress the influence of the configuration such as the etchant used in the manufacturing process for forming the resistive film on the first electrode. Therefore, it is possible to provide the liquid crystal panel 10 with fewer restrictions in manufacturing.

Moreover, the predetermined direction described above is the radial direction of the circle. Further, the above-described area (concentric area Am) and the first electrodes (electrodes 2m1, 2m2, . . . , 2m(k−1), 2mk) have a circular or arcuate shape when viewed from above. This makes it possible to realize the liquid crystal panel 10 that operates to produce an optical effect similar to that of a Fresnel lens.

In addition, among the plurality of regions (concentric circular regions Am), the radially outer region has a narrower width. Thereby, in the liquid crystal panel 10 that operates to produce an optical effect similar to that of a Fresnel lens, the refractive index difference in the outer region can be made more pronounced. Therefore, the entire liquid crystal panel 10 can operate as a Fresnel lens in which the degree of refraction of light increases toward the outer side in the radial direction.

Further, among the four or more first electrodes (electrodes 2m1, 2m2, . A potential lower than that of the first electrode arranged on the other end side in the predetermined direction is applied to the first electrode arranged on one end side. Thereby, the liquid crystal panel 10 can be operated as a Fresnel lens.

(Embodiment 2)
FIG. 10 is a schematic configuration diagram of a liquid crystal panel 100 as the second embodiment. The liquid crystal panel 100 includes glass substrates 51 and 52, a flexible substrate 53, and the like. The liquid crystal panel 100 is a liquid crystal panel in which a glass substrate 51 and a glass substrate 52 face each other with a liquid crystal layer 40 (see FIG. 13) interposed therebetween. Hereinafter, when viewed from the glass substrate 51, the side of the glass substrate 52 is defined as one side, and the opposite side is defined as the other side.

Note that the first direction Dx and the second direction Dy in the description of the second embodiment are two directions along the plate surfaces of the glass substrate 51 and the glass substrate 52 . The orthogonal relationship among the first direction Dx, the second direction Dy, and the third direction Dz is the same as described above.

FIG. 11 is a schematic configuration diagram of the glass substrate 51. As shown in FIG. A plurality of extension electrodes extending in the first direction Dx are aligned in the second direction Dy on one surface side of the glass substrate 51 . , 61(n-1), 61n, extended electrodes 621, 622, . . . , 62(n-1), 62n, and extended electrodes Electrodes 6t1, 6t2, . . . , 6t(n−1), 6tn are illustrated.

Here, the extension electrodes 611, 612, . . . , 61(n−1), 61n are treated as one set of extension electrodes. Hereinafter, when referred to as the first set, it includes the extension electrodes 611, 612, ..., 61(n-1), 61n. , 62(n-1), 62n are treated as another set of extension electrodes. , 62(n-1), 62n when referred to as the second set hereinafter. , 6t(n-1), 6tn are treated as another set of extension electrodes. , 6t(n-1), 6tn when referred to as the t-th set hereinafter.

A set of extension electrodes such as the first set, the second set, . . n is a natural number of 4 or more. A set of extension electrodes provided on one surface side of the glass substrate 51 is t. That is, t sets of extending electrodes are arranged in order from one end side to the other end side in the second direction Dy on one surface side of the glass substrate 51 . t is a natural number. Although FIGS. 11 and 13 are illustrated on the assumption that t is a number of 3 or more, t may be 2 or less.

A plurality of extension electrodes included in one set of extension electrodes are connected to different signal lines. In FIG. 11, signal lines 71, 72, . . . , 7(n−1), 7n are illustrated as the signal lines. The number of signal lines is the same as the number (n) of extension electrodes included in one set of extension electrodes.

Here, if f is a natural number equal to or less than t, and d is a natural number equal to or less than n, the extension electrode 6fd among the n extension electrodes included in the f-th set is connected to the signal line 7d.

For example, as shown in FIG. 11, the extension electrode 611 among the n extension electrodes included in the first set is connected to the signal line 71 . Further, the extension electrode 612 among the n extension electrodes included in the first set is connected to the signal line 72 . Further, of the n extension electrodes included in the first set, the extension electrode 61(n-1) is connected to the signal line 7(n-1). Further, among the n extension electrodes included in the first set, the extension electrode 61n is connected to the signal line 7n. As shown in FIG. 11, the n extension electrodes included in each of the second set, . be.

The n extension electrodes included in one set of extension electrodes such as the first set, the second set, . , the extended electrode connected to the signal line 7(n-1), and the extended electrode connected to the signal line 7n. , 7(n− 1), 7n and the correspondence are common to all of the first set, the second set, . . . , the tth set.

Specifically, among the n extension electrodes included in each set, the extension electrode 6fd is the d-th extension electrode counted from one end side in the second direction Dy in each set. For example, among the n extension electrodes included in the first set, the extension electrode 611 is the first extension electrode counted from one end side in the second direction Dy in the first set. Further, among the n extension electrodes included in the first set, the extension electrode 612 is the second extension electrode counted from one end side in the second direction Dy in the first set. Further, among the n extending electrodes included in the first set, the extending electrode 61 (n−1) is the (n−1)-th extending electrode counted from one end side in the second direction Dy within the first set. It is an extension electrode lined up. Further, among the n extending electrodes included in the first set, the extending electrode 61n is the n-th extending electrode counted from one end side in the second direction Dy within the first set. Similar considerations apply to each of the second, . . . , tth sets.

The signal lines 71, 72, . 11, the signal lines 71, 72, . , 8(n-1), and 8n are connected by bending at the other end side in the direction Dy. , 7(n-1), and 7n, and is not limited to this, and the specific forms may be changed as appropriate. . Note that the reference line BL is a schematic line for indicating the position where the glass substrate 51 and the glass substrate 52 are superimposed in a plan view. The glass substrate 51 and the glass substrate 52 face each other on the one end side in the second direction Dy with respect to the reference line BL. The glass substrate 52 does not extend to the other end side in the second direction Dy from the reference line BL.

Terminals 81, 82, . is laminated to Terminals 81, 82, . It functions as a terminal for

Further, on one surface side of the glass substrate 51, a terminal 80 in the same layer as the terminals 81, 82, . The terminals 80, 81, 82, . . . , 8(n−1), 8n are arranged in the first direction Dx at positions overlapping the flexible substrate 53 in plan view. , 8(n-1), and 8n, and is not limited to this, and the specific arrangement may be changed as appropriate. The terminal 80 is continuous with the upper layer electrode 800 provided on the other end side of the reference line BL.

FIG. 12 is a cross-sectional view taken along line QQ of FIG. A lower layer electrode 700 and an upper layer electrode 800 are laminated on one surface side of the glass substrate 51 . The lower layer electrode 700 is an electrode in the same layer as the signal lines 71, 72, . . . , 7(n-1), 7n. The upper layer electrode 800 is an electrode in the same layer as the terminals 80, 81, 82, . . . , 8(n-1), 8n. A common electrode 55 is provided on the other surface of the glass substrate 52 . The common electrode 55 is a thin film electrode. A conductive material 54 is provided between the common electrode 55 and the upper layer electrode 800 . The conducting material 54 conducts the common electrode 55 and the upper layer electrode 800 . The conductive material 54 is, for example, fine particles coated with a highly conductive material such as gold (Au), but is not limited to this. For example, the conductive material 54 may be a silver (Ag) paste that is applied to one surface of the upper electrode 800 and brought into contact with the conductive material 54 . 12 is covered with a spacer 56 at the outer peripheral portion other than the contact portion with the upper layer electrode 800 and the common electrode 55. As shown in FIG. The spacer 56 is an insulator that defines the distance in the third direction Dz between the glass substrates 51 and 52 .

13 is a cross-sectional view taken along the line RR of FIG. 11. FIG. A second alignment film 60 is provided on the other surface side of the common electrode 55 in a region functioning as a lens, that is, a region facing the extended electrode 6fd. In other words, the common electrode 55 and the second alignment film 60 are laminated on the glass substrate 52, and the second alignment film 60 is provided on the glass substrate 51 side (the other surface side).

Further, as shown in FIGS. 11 and 13, a high resistance film 91 is provided on one surface side of the extended electrodes 611, 612, . . . , 61(n−1), 61n. A high resistance film 92 is provided on one surface side of the extended electrodes 621, 622, . . . , 62(n−1), 62n. Further, as shown in FIG. 11, a high resistance film 9t is provided on one side of the extended electrodes 6t1, 6t2, . . . , 6t(n−1), 6tn. In a similar way, a high resistance film 9f is provided on one surface side of the extended electrodes 6f1, 6f2, . In other words, FIG. 13 representatively shows the high resistance films 91 and 92 of the high resistance film 9f. FIG. 13 also shows a region B1 containing the first set and a region B2 containing the second set. Although not shown, the area containing the fth set is area Bf. The configuration of the region Bf in a cross-sectional view is the same as that of the region B2.

Specifically, an insulating layer 57 is laminated on one surface side of the glass substrate 51 . The insulating layer 57 insulates the electrode layer including the signal lines 71, 72, . . . , 7(n−1), 7n described with reference to FIG. On one surface side of the insulating layer 57, an electrode layer including extended electrodes (extended electrodes 6f1, 6f2, . , 6f(n−1), 6fn are connected to signal lines 71, 72, . and individually connected.

An insulating layer 58 is laminated on one surface side of the electrode layer including the extended electrodes (extended electrodes 6f1, 6f2, . . . , 6f(n−1), 6fn). A high resistance film layer including a high resistance film 9f is laminated on one surface side of the insulating layer 58 . An alignment film 99 is laminated on one side of the high resistance film layer. The first alignment film 59 and the second alignment film 60 face each other with the liquid crystal layer 40 interposed therebetween. Spacers 56 are provided on the sides of the liquid crystal layer 40 . The spacers 56 surround the four rectangular sides of the glass substrate 52 shown in FIG. 11 from the inside and seal the sides of the liquid crystal layer 40 .

The common electrode 55 overlaps the extended electrodes included in all of the first set, the second set, . In addition, the high-resistance film 9f includes extension electrodes (extension electrodes 6f1, 6f2, . . . , 6f(n-1), 6fn) from a planar perspective.

The material of the common electrode 55 is the same as that of the common electrode 42 . The material of the high resistance film 9f is the same as the material of the high resistance film 3m. The material of the extended electrodes is similar to that of the four or more electrodes. Although not shown, the liquid crystal molecules contained in the liquid crystal layer 40 of the second embodiment are controlled so as to be oriented according to the potential difference between the common electrode 55 and the extension electrodes when the liquid crystal panel 100 operates.

, 7(n−1), 7n, terminals 81, 82, . Connected. The driver circuit individually controls the potentials of the plurality of extension electrodes by individually applying drive signals to the plurality of extension electrodes. Here, the plurality of extension electrodes (extension electrode 6fd) sharing the signal line (the signal line 7d which is one of the signal lines 71, 72, . controlled to be

14, 15, and 16 are graphs showing an example of the relationship between the distance from one end in the direction in which the extended electrodes are arranged and the refractive index difference. In the description with reference to FIGS. 14, 15 and 16, it is assumed that n=4 and t=4. 14, 15 and 16, a range Set is shown as a range indicating a difference in refractive index corresponding to a range in which one set of extension electrodes is provided. 14, 15 and 16, the left side of the graph indicates one end side in the direction in which the extended electrodes are arranged, and the right side of the graph indicates the other end side in the direction in which the extended electrodes are arranged. In addition, the width of each of the extension electrodes 6f1, 6f2, 6f3, and 6f4 in the row direction (for example, the second direction Dy) is 50 μm. The interval in the row direction between the extended electrodes 6f1 and 6f2 is 100 μm. The interval in the row direction between the extended electrode 6f2 and the extended electrode 6f3 is 296 μm. The interval in the row direction between the extended electrodes 6f3 and 6f4 is 100 μm. The width of the high resistance film 9f along the direction in which the extended electrodes 6f1, 6f2, 6f3 and 6f4 are arranged is 546 μm. The distance between the high resistance film 9(f-1) and the high resistance film 9f arranged in the direction in which the extension electrodes 6f1, 6f2, 6f3 and 6f4 are arranged is 20 μm. Also, the potential of the common electrode 55 is 0V.

In the example shown in FIG. 14, the potential of the extension electrode 6f1 is 0V. Further, the potential of the extension electrode 6f2 is 2.7V. Further, the potential of the extension electrode 6f3 is 6.35V. Further, the potential of the extension electrode 6f4 is 8V.

In the example shown in FIG. 15, the potential of the extension electrode 6f1 is 0V. Further, the potential of the extension electrode 6f2 is 2.25V. Further, the potential of the extension electrode 6f3 is 2.9V. Further, the potential of the extension electrode 6f4 is 3.25V.

In the example shown in FIG. 16, the potential of the extension electrode 6f1 is 8V. Further, the potential of the extension electrode 6f2 is 6.35V. Further, the potential of the extension electrode 6f3 is 2.7V. Also, the potential of the extension electrode 6f4 is 0V.

As shown in each potential in the case of FIG. 14 described above, each potential in the case of FIG. 15, and FIGS. By setting the potential so that the potential of the extended electrode located on the other end side is higher than the potential of the extended electrode located on the one end side, the range Set in which one set of extended electrodes is provided The orientation of the liquid crystal molecules contained in the liquid crystal layer 40 can be controlled so that the refractive index difference increases from one end to the other end. Further, by arranging the t sets of the extension electrodes from one end to the other end, it is possible to cause the sequential increase in the refractive index difference by the extension electrodes of each set from the one end to the other end t times. The t successive increase in refractive index difference caused by such t sets of extension electrodes is an optical effect caused by a linear Fresnel lens in which t refractive regions are arranged in parallel from one end side to the other end side. substantially the same. Each of the t refraction regions temporarily converges the light incident along the third direction Dz from the glass substrate 51 side to the glass substrate 52 side, and then focuses the light on the other end side. The light is refracted so that it diverges from the focal point. One refractive region causes the light to diverge more toward the other end than to the other end of the refractive region. Further, the light is radiated so as to be diffused from an emission point, which is a position away from the liquid crystal panel 1000 and is an intermediate point in the arrangement direction of the extension electrodes provided in one refraction area, to the glass substrate 51 side. The traveling direction of the incident light becomes the traveling direction along the third direction Dz by passing through the refraction area and is emitted from the glass substrate 52 side. Each range Set shown in FIGS. 14, 15 and 16 functions as a refraction area. Thus, the liquid crystal panel 100 operates to produce an optical effect similar to that of a linear Fresnel lens.

14, each potential in FIG. 15, and a comparison between FIG. 14 and FIG. The magnitude relationship between the one end side and the other end side of the refractive index difference of each refraction region can be controlled according to the magnitude relationship of the potential difference between the output electrodes. Specifically, the greater the potential difference between the extending electrodes adjacent to each other in the alignment direction, the greater the difference in the curvature between the one end side and the other end side.

14 and each potential in FIG. 16, by reversing the potential of each set of extension electrodes in the direction in which the extension electrodes are arranged, and comparison with FIG. 16 , the direction of increasing curvature difference occurring in the range (range Set) where each set of extension electrodes is provided can be reversed. That is, by controlling the potential of the extension electrode, the direction of light emitted from the glass substrate 51 side can be controlled when the light is emitted from the glass substrate 52 side.

It should be noted that the liquid crystal panel 100 can also be used by combining a plurality of sheets. The configuration of an optical device 150 using a plurality of liquid crystal panels 100 will be described below with reference to FIGS. 14 and 15. FIG.

FIG. 17 is a schematic configuration diagram of an optical device 150 capable of handling both P-waves and S-waves. As shown in FIG. 17, an optical device 150 capable of handling both P waves and S waves has a first panel 101 and a second panel 102 laminated in the third direction Dz. Each of the first panel 101 and the second panel 102 has the same configuration as the liquid crystal panel 100 .

FIG. 18 is a diagram showing an example of alignment directions of liquid crystal molecules by the first alignment film 59 and the second alignment film 60 provided on the first panel 101 and the second panel 102 . As shown in FIG. 18, the first alignment films 59 of the first panel 101 and the second panel 102 define the initial alignment of the liquid crystal molecules contained in the liquid crystal layer 40 in the second direction Dy. Also, the second alignment films 60 of the first panel 101 and the second panel 102 define the initial alignment of the liquid crystal molecules included in the liquid crystal layer 40 in the first direction Dx. As a result, in the first panel 101, a polarized component (for example, P wave) having a polarization axis parallel to the second direction Dy is refracted by the refractive index distribution of the liquid crystal layer 40 in the first panel 101, while the first A polarized component (for example, S wave) having a parallel axis parallel to the direction Dx is not affected by the refractive index distribution of the liquid crystal layer 40 . In addition, since the first alignment film 59 and the second alignment film 60 of the first panel 101 intersect at 90 degrees, the polarization axes of these polarized components change by 90 degrees in the process of passing through the first panel 101. Let Such a change in the polarization axis is called optical rotation. Due to the optical rotation, the polarization component that was originally the P wave becomes the S wave in the process of passing through the first panel 101, and the polarization component that was originally the S wave becomes the P wave. Moreover, since the second panel 102 has the same configuration, it imparts a refractive index distribution to the polarized light component parallel to the second direction Dy, and re-rotates the two polarized light components perpendicular to each other. That is, the second panel 102 gives a refractive index distribution to the polarized light component which is an S wave before entering the first panel 101 and becomes a P wave after passing through the first panel 101 , while the light entering the first panel 101 has a refractive index distribution. No refractive index distribution is given to the polarization component which is the P wave before passing through the first panel 101 and becomes the S wave after passing through the first panel 101 . By stacking these two panels, it is possible to provide a refractive index profile for both S and P waves from the light source, ie, to exert a lens effect on these two polarization components.

The second embodiment has been described above using the liquid crystal panel 100 shown in FIG. 10 as an example. It is not something that can be done. Another form of liquid crystal panel capable of producing an optical effect similar to that of a linear Fresnel lens will be described below with reference to FIG.

FIG. 19 is a schematic configuration diagram of a liquid crystal panel 200 as a modified example of the second embodiment. A liquid crystal panel 200 shown in FIG. 19 includes a glass substrate 251 , a glass substrate 252 , and a flexible substrate 53 . The glass substrate 251 has a configuration similar to that of the glass substrate 51 except that the outer shape thereof is circular in plan view. The glass substrate 252 has the same configuration as the glass substrate 52 except that the outer edge of the range overlapping the glass substrate 251 in a plan view is arcuate.

As illustrated by the liquid crystal panel 100 shown in FIG. 10 and the liquid crystal panel 200 shown in FIG. The shape is not limited and can be changed as appropriate. Of course, the liquid crystal panel may have a polygonal shape without being limited to a square, or may have a shape including both a linear outer edge and a curved outer edge.

As described above, according to the second embodiment, the liquid crystal panel 100 or the liquid crystal panel 200 includes the first substrate (the glass substrate 51 or the glass substrate 251) and the second substrate facing the first substrate with the liquid crystal (the liquid crystal layer 40) interposed therebetween. and a substrate (the glass substrate 52 or the glass substrate 252). The first substrate includes four or more first electrodes (extended electrodes 6f1, 6f2, . A plurality of regions (regions Bf) including a resistance film (high resistance film 9f) laminated above the first electrode with an insulating layer 58) interposed therebetween are provided in the predetermined direction. Further, the resistive films provided in each of the regions adjacent to each other in the predetermined direction are spaced apart in the predetermined direction. Also, the resistive film in each of the regions covers the first electrode in each of the regions. A second electrode (common electrode 55) is provided along the surface of the second substrate. Further, the resistive film and the second electrode face each other with the liquid crystal interposed therebetween.

As described above, the resistive film (high-resistive film 9f) serves as the first electrodes (extended electrodes 6f1, 6f2, . . . , 6f(n− 1), 6fn). That is, the first electrode does not exist where the resistive film does not exist when viewed from above. Therefore, it is possible to suppress the influence of the configuration such as the etchant used in the manufacturing process for forming the resistive film on the first electrode. Therefore, it is possible to provide the liquid crystal panel 100 or the liquid crystal panel 200 with fewer restrictions in manufacturing.

Also, the plurality of regions (regions Bf) are arranged in parallel in the predetermined direction (for example, the second direction Dy). The first electrodes (extended electrodes 6f1, 6f2, . . . , 6f(n−1), 6fn) extend in a direction orthogonal to the predetermined direction (eg, first direction Dx). This makes it possible to realize the liquid crystal panel 10 that operates to produce an optical effect similar to that of a linear Fresnel lens.

Further, among the four or more first electrodes (extending electrodes 6f1, 6f2, . A potential lower than that of the first electrode arranged on the other end side in the predetermined direction is applied to the first electrode arranged on one end side in the two directions Dy). Thereby, the liquid crystal panel 10 can be operated as a linear Fresnel lens.

It should be noted that other actions and effects brought about by the aspects described in each of the above-described embodiments that are obvious from the description of this specification or that can be appropriately conceived by those skilled in the art are naturally understood to be brought about by the present disclosure. be done.

10, 100, 200 liquid crystal panels 11, 43, 51, 52 glass substrates 12, 58 insulating layer 40 liquid crystal layers 211, 212, 21(k-1), 21k, 221, 222, 22(k-1), 22k, 231, 232, 23 (k-1), 23k, 2 (m-1) 1, 2 (m-1) k, 2m1, 2m2, 2m (k-1), 2mk Electrodes 31, 32, 33, 3 ( m−1), 3m, 91, 92, 9t High resistance films 611, 612, . . . , 61(n−1), 61n, 621, 622, . , 6t(n−1), 6tn extension electrodes

Claims (5)

a first substrate;
a second substrate facing the first substrate with liquid crystal interposed therebetween;
The first substrate has
A plurality of regions including four or more first electrodes arranged in a predetermined direction and a resistive film laminated above the first electrodes with an insulating layer interposed therebetween are provided in the predetermined direction,
the resistive films provided in each of the regions adjacent to each other in the predetermined direction are spaced apart in the predetermined direction;
the resistive film in each of the regions covering the first electrode in each of the regions;
The second substrate is provided with a second electrode along the plate surface,
the resistive film and the second electrode face each other with the liquid crystal interposed therebetween;
LCD panel. The predetermined direction is a radial direction of a circle,
The shape of the region and the first electrode is circular or arc-shaped,
The liquid crystal panel according to claim 1. Among the plurality of regions, the region located further outward in the radial direction has a narrower width in the radial direction.
The liquid crystal panel according to claim 1. The plurality of regions are arranged in parallel in the predetermined direction,
The first electrode extends in a direction orthogonal to the predetermined direction,
The liquid crystal panel according to claim 1. Among the four or more first electrodes provided in each of the regions, the first electrode arranged on one end side in the predetermined direction has the first electrode arranged on the other end side in the predetermined direction. given a lower potential than the electrodes,
The liquid crystal panel according to any one of claims 1 to 4.

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