JP3150072B2 - Manufacturing method of liquid crystal optical element - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a TN type liquid crystal optical element used for a display, an optical shutter, a sign board, a projection television, and the like, and more particularly to a high precision, a high aperture ratio and a high luminance.

[0002]

2. Description of the Related Art At present, TN (Twisted Nematic Twiste) which is most widely used as a liquid crystal display mode is used.
The operation principle of the (d Nematic) mode will be described with reference to FIGS. FIG. 16 shows the alignment structure of liquid crystal molecules when no applied electric field is applied, and FIG. 17 shows the alignment structure of liquid crystal molecules when a voltage higher than a predetermined threshold is applied.

The TN mode has a structure in which liquid crystal molecules 16 of a liquid crystal layer 12 sandwiched between an array electrode 10 and a counter electrode 11 are twisted by 90 °, and the liquid crystal layer 12, the array electrode 10 and the counter electrode 11 are Panel including two polarizing plates 13 and 14
It is sandwiched between. The figure shows an NW (Normally White or Normally Open) mode. In the NW mode, the polarization axes of the two polarizing plates 13 and 14 are orthogonal to each other, and the polarization axis of one of the polarizing plates is one. Are arranged so as to be parallel or perpendicular to the long axis direction of the liquid crystal molecules 16 in contact with the substrate.

In the TN display mode, rotation of linearly polarized light, that is, binary selection of optical rotation (0 ° and 90 °) is performed by a liquid crystal layer, and an optical effect similar to the effect of rotating one of a pair of polarizers by 90 °. An effect is produced, and as a result, light and dark display is performed. In this case, an Np type liquid crystal is used. As for the helical pitch P and the wavelength λ of light, when P> λ, optical rotation is exhibited. In this case, the twist angle is approximately 90 °,
The optical rotation angle is also approximately 90 °. When no voltage is applied or a voltage equal to or lower than a predetermined threshold voltage shown in FIG. 12 is applied, the linearly polarized light rotates by 90 ° due to the TN alignment of the liquid crystal layer 12, and light is transmitted, so that white display is performed. On the other hand, when a voltage higher than a predetermined threshold is applied, the liquid crystal molecules 16 stand almost vertically at the center of the liquid crystal layer 12 due to the electric field effect as shown in FIG. The optical power is almost lost, and the light transmittance gradually decreases. as a result,
The display becomes black.

When the polarization axes of the polarizing plates 13 and 14 are parallel to each other, if no voltage is applied or a voltage equal to or lower than a predetermined threshold voltage is applied, light is blocked due to optical rotation of 90 ° and black display is performed. Becomes This is NB (Normally Black
Normally Closed) mode. By providing a pattern of the drive electrode circuit 15 and the like on the array electrode 10, display according to the pattern is performed.昭 Shokodo Publishing Co., Ltd. “Liquid Crystal Display (Television Society)”
p. 60, Baifukan Publishing Co., Ltd., “Liquid Crystal and Application” p. 16
Etc.｝.

[0006]

In the TN display mode, since the liquid crystal molecules are aligned, the display direction depends on the alignment direction. Further, when the orientation is not uniform in the TN display mode, uneven brightness and uneven operation occur between a portion where the orientation is uniform and a portion where the orientation is not uniform. Furthermore, when light enters a driving circuit electrode such as a thin film transistor (TFT), liquid crystal molecules near the TFT may malfunction due to electric leakage. Therefore, it is necessary to provide a light reflection layer or an absorption layer to cover a driving circuit electrode portion such as a TFT. The greater the area of the portion covered by the light reflection layer or the absorption layer, the lower the spectral utilization efficiency. Therefore, it is desired to reduce the area of a portion covered by the light reflection layer or the absorption layer.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and can provide an unprecedented bright display, widen the pixel area, improve the aperture ratio, and improve the display brightness. Muraganaku, with high precision, and capable of high-luminance display
It has the purpose of providing a way suitable for the manufacture of liquid crystal optical elements.

[0008]

In order to achieve the above object, a liquid crystal optical element according to the present invention has at least an array substrate having a driving circuit electrode and electrode wiring formed on a surface thereof, and a liquid crystal optical element facing the array substrate. A counter substrate provided in the
A liquid crystal layer provided between the array substrate and the counter substrate, wherein a light-shielding resin layer is formed on the driving circuit electrodes and the electrode wiring on the array substrate; A light-transmitting resin layer is formed in a display region other than the display region, and surfaces of the light-shielding resin layer and the light-transmitting resin layer on the liquid crystal layer side are substantially flattened.

In the above structure, the light-shielding resin layer is
It preferably has one selected from light absorption and light reflection. Further, a substrate-side pixel electrode is formed in a portion other than the driving circuit electrode and the electrode wiring on the array substrate, and a liquid crystal layer-side pixel electrode is formed on the flat light-shielding resin layer and the light-transmitting resin layer. Preferably, the substrate-side pixel electrode and the liquid crystal layer-side pixel electrode are electrically connected.

[0010] Preferably, a black matrix is not formed on the opposing substrate.

[0011] Further, on the back surface of the electrode forming surface of the array substrate, the array substrate is substantially connected to the array substrate via any one selected from a polymer resin, a gel, and a liquid having substantially the same refractive index as the array substrate. It is preferable that an installation substrate having the same refractive index is joined, and a light absorber layer is provided on a side surface of the installation substrate.

It is preferable that an installation substrate similar to the installation substrate is bonded to a surface of the opposite substrate opposite to a surface facing the liquid crystal layer. Further, it is preferable that a surface of the installation substrate opposite to a surface joined to the array substrate or the counter substrate is a concave surface.

Further, it is preferable that a convex lens facing the concave surface is provided.

On the other hand, the projection device of the present invention comprises at least
A light source, a projection lens, and a liquid crystal optical element having any one of the above configurations, and light from the light source is made to enter from one of the array substrate side end face and the counter substrate side end face of the liquid crystal optical element, The light emitted from the other is projected on a screen by the projection lens.

Further, the liquid crystal display device of the present invention comprises:
A backlight is provided on the end face on the array substrate side or on the end face on the counter substrate side of the liquid crystal optical element having any of the above structures via a polarizing plate.

The method for manufacturing a liquid crystal optical element according to the present invention is directed to a method for manufacturing a liquid crystal optical element, comprising: an array substrate having at least a driving circuit electrode and electrode wiring formed on a surface thereof; a counter substrate provided so as to face the array substrate; A method for manufacturing a liquid crystal optical element including a liquid crystal layer provided between a substrate and the counter substrate, wherein the electrode formation surface of the array substrate having a drive circuit electrode and electrode wiring formed on the electrode formation surface is On the opposite side, a light absorbing layer was formed on the side surface having a refractive index substantially the same as that of the array substrate via a transparent layer having a refractive index substantially the same as that of the array substrate. Bonding the installation substrate, forming a positive resist containing a light-absorbing substance or a light-reflecting substance on the electrode forming surface including the drive circuit electrode and the electrode wiring, and being joined to the array substrate of the installation substrate. Face Irradiate ultraviolet rays from the opposite side to form a light-shielding resin layer on the drive circuit electrodes and the electrode wirings through development and washing steps, and apply a negative resist on the electrode forming surface including the light-shielding resin layer. A film is formed, and the drive circuit electrode and the electrode wiring of the array substrate are formed by irradiating ultraviolet rays from a surface of the installation substrate opposite to a surface bonded to the array substrate, and performing a development and a cleaning process. A light-transmitting resin layer is formed on the non-existing portion so that the surface is substantially flat with respect to the light-shielding resin layer.

In the above method, it is preferable that the transparent body layer is any one selected from a polymer resin, a gel body and a liquid. Further, it is preferable that a difference between a refractive index of the array substrate and a refractive index of the transparent body layer and the installation substrate is 0.2 or less.

Further, a substrate-side pixel electrode is formed on a portion of the array substrate other than the portion where the driving circuit electrode and the electrode wiring are formed, and the light-transmitting resin layer is formed according to a predetermined pattern. A part of the substrate-side pixel electrode is exposed by partially blocking the ultraviolet light and providing a contact region without partially curing the negative resist, and a liquid crystal layer-side pixel is formed on at least the light-transmitting resin layer. Preferably, an electrode is formed, and the substrate side pixel electrode and the liquid crystal layer side pixel electrode are electrically connected via the contact region.

Also, a rod-shaped light absorbing layer having a cross section of substantially the same shape as the contact region is provided on a portion of the installation substrate facing the contact region so as to be substantially perpendicular to the electrode forming surface of the array substrate. Is preferably formed.

Alternatively, it is preferable that a mask pattern corresponding to a position and a shape facing the contact region is provided between the array substrate and the installation substrate. Or
Between the array substrate and the installation substrate, a rod-shaped light absorbing member having a cross section of substantially the same shape as the contact region so as to be substantially perpendicular to the electrode forming surface of the array substrate at a portion facing the contact region; It is preferable that the mask substrate on which the layer is formed is bonded via the transparent body layer.

Preferably, a prism-shaped transparent spacer is provided between the array substrate and the installation substrate at a position facing the rod-shaped light absorbing layer. Also,
On the opposing surface of the rod-shaped light absorbing layer and the spacer,
It is preferable that a bottom area of the spacer is larger than a cross-sectional area of the rod-shaped light absorbing layer.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment) A first embodiment relating to the liquid crystal optical element of the present invention.
The embodiment will be described with reference to FIG. As shown in FIG. 1, the liquid crystal optical element of the present invention (the whole is denoted by reference numeral 1) is basically the same as the conventional example shown in FIG.
And a liquid crystal layer 12 provided between the substrates 10 and 11;
A pair of polarizers (see reference numerals 13 and 14 shown in FIG. 16; hereinafter, the illustration and description of the polarizers are omitted) provided outside the substrates 10 and 11 are provided.

In the array substrate 10, for example, a drive circuit electrode 2 such as a thin film transistor (TFT) is formed on the electrode forming surface 20a of a first transparent substrate 20 made of glass.
1, an electrode wiring 22 such as a gate line and a source line, a transparent substrate-side pixel electrode 23 and the like are formed. Drive circuit electrode 21
A light-absorbing or light-reflecting light-shielding resin layer 24 is formed on the electrode wiring 22. Further, a light-transmitting resin layer 25 is formed on a portion of the first transparent substrate 20 other than the drive circuit electrodes 21 and the electrode wirings 22 on the electrode forming surface 20a, that is, on the pixel portion. Here, each of the light-shielding resin layer 24 and the light-transmitting resin layer 25 is formed such that the surfaces thereof (the surface on the side of the liquid crystal layer 12) are at the same height, and their surfaces are substantially flattened.

On the other hand, in the counter substrate 11, a transparent electrode 28 is formed on a second transparent substrate 27 made of, for example, glass. However, the drive circuit electrode 2 on the array substrate 10
No black matrix is formed so as to face 1 and the electrode wiring 22. As the liquid crystal layer 12, for example, a twisted nematic liquid crystal (Twisted Nematic: hereinafter, referred to as a TN liquid crystal) is used.

As described above, by flattening the surfaces of the light-shielding resin layer 24 and the light-transmitting resin layer 25, the alignment disorder of the liquid crystal molecules of the liquid crystal layer 12 in contact with them can be eliminated, and the liquid crystal alignment can be improved. It can be uniform. Further, since the drive circuit electrodes 21 and the electrode wirings 22 are covered with the light-shielding resin layer 24, light does not enter the drive circuit electrodes 21 and the electrode wirings 22 from the counter substrate 11 side, and electrical leakage occurs. Does not cause malfunction. Further, even if light is incident on the drive circuit electrode 21 and the electrode wiring 22 from the array substrate 10 side (incident surface 20b of the first transparent electrode 20), electric leakage occurs in the drive circuit electrode (TFT) 21. Probability is low. Therefore, a black matrix is not required on the counter substrate 11 side. Accordingly, a liquid crystal optical element having a high aperture ratio (high brightness) which has not been obtained in the past can be obtained. Further, the light-shielding resin layer 2
4 and the light-transmitting resin layer 25 function as a protective film for the drive circuit electrode 21, the electrode wiring 22, the substrate-side pixel electrode 23, and the like.

(Second Embodiment) Next, a liquid crystal optical element according to a second embodiment of the present invention will be described with reference to FIG. As shown in FIG. 2, the liquid crystal optical element 1 of the present invention is different from the first embodiment shown in FIG. 2 in that a light-shielding resin layer 24 and a light-transmitting resin layer 25 are further added.
A transparent liquid crystal layer-side pixel electrode 26 is formed in a predetermined pattern thereon, and is electrically connected to the substrate-side pixel electrode 23. Other configurations are the same as those of the first embodiment. A hole is provided at a predetermined position in the light-transmitting resin layer 25, and a transparent electrode material is deposited on the hole to form a liquid crystal layer side pixel electrode 26 and a substrate side pixel electrode 23.
Are electrically connected.

In the structure of the first embodiment, since the light-transmitting resin layer 25 exists on the substrate-side pixel electrode 23, the driving voltage is reduced by the electric field loss due to the light-transmitting resin layer 25 to the conventional TN liquid crystal optical device. Had to be higher than the device. On the other hand, in the second embodiment, the liquid crystal layer side pixel electrode 26 must be provided extra, but since the liquid crystal layer side pixel electrode 26 exists on the light shielding resin layer 24 and the light transmitting resin layer 25, Electric field loss due to the light transmitting resin layer 25 can be eliminated.

(Third Embodiment) Next, a liquid crystal display device according to a second embodiment of the present invention and a projection device using the same will be described with reference to FIGS. FIG.
6 are cross-sectional views each showing a variation of the configuration of the liquid crystal display element of the present invention and a projection device using the same, and FIG. 7 is a cross-sectional view showing another variation of the liquid crystal display element of the present invention. Specifically, the liquid crystal display device was a light valve device, and the projection device was a projection television.

A first configuration of the projection apparatus of the present invention shown in FIG. 3 includes a light valve device (spatial modulation element) 40 having the liquid crystal optical element 1 shown in FIG. 1 or 2, a light source 2, and a light source 2.
Field lens 3 for converting light from the light into substantially parallel light and entering the light valve device 40, and a projection lens 4 for projecting light emitted from the light valve device 40 onto the screen 5.
Is provided. The light valve device 40 includes a liquid crystal optical element 1 shown in FIG. 1 or FIG. 2 and a back surface 2a of an electrode forming surface 20a of an array substrate 10 (specifically, a first transparent substrate 20).
0b, the first transparent substrate 20 has substantially the same refractive index as the first transparent substrate 20 via any one layer 30 selected from a polymer resin, a gel, and a liquid having the same refractive index as the first transparent substrate 20. The mounting substrate 50 is joined. The light valve device 40 moves the liquid crystal optical element 1 toward the light source 2 so that light enters from the opposite substrate 11 side of the liquid crystal optical element 1.
The installation substrate 50 is arranged so as to be on the projection lens 4 side.

A light absorber layer 60 such as a black paint is provided on a side surface of the installation substrate 50. The installation substrate 50 is a transparent parallel flat plate made of, for example, glass resin, and
An anti-reflection film 61 is provided on the side surface. The mounting substrate 50 is used to hold the array substrate 10 when manufacturing the array substrate 10 in the method for manufacturing a liquid crystal optical element of the present invention described later. It also functions as a holder when mounting 1 on a projection device or the like.

The leakage light angle (outgoing angle) of the liquid crystal optical element 1 of the projection device of the present invention is 2.4 °, which is not more than 1/10 of the leakage light angle of the conventional general liquid crystal optical element. Therefore, the present device can output light substantially in parallel (emit parallel light). On the other hand, in a conventional apparatus such as this apparatus which cannot emit parallel light, if the incident angle of the light beam incident on the liquid crystal optical element 1 differs depending on the location, the image quality of the projected image becomes non-uniform. In order to prevent this, it is necessary to increase the size of the projection lens, which causes a problem that the size of the apparatus is increased and the cost is increased. However, in the projection device of the present invention, when the pixel at the center of the screen of the liquid crystal optical element 1 is in a transparent state, the size of the pupil of the projection lens 4 is set to about 9 in terms of the amount of light out of the light that spreads out from the pixel.
The size is set so that 0% is incident. Therefore, according to the present apparatus, the projection lens 4 can be made smaller, the optical distance can be made shorter, and the projection television can be made smaller and lighter. Specifically, the projection lens 4 can be reduced to about 1/10 or less of a conventional projection television.

The second configuration of the projection apparatus of the present invention shown in FIG. 4 is almost the same as the first configuration shown in FIG. 3, except that the light valve device 40 is arranged from the side of the array substrate 10 of the liquid crystal optical element 1. The difference is that the installation substrate 50 is arranged on the light source 2 side and the liquid crystal optical element 1 is arranged on the projection lens 4 side so that light enters. Therefore, the obtained effect is substantially the same as that of the first configuration.

The third configuration of the projection device of the present invention shown in FIG. 5 is almost the same as the first configuration shown in FIG. 3, except that the liquid crystal optical element 1 of the installation substrate 51 of the light valve device 40 is joined. The side opposite to the surface is a concave surface, and is configured to function as a plano-concave lens. In response to this, the field lens 3 is also changed to a biconvex lens. With such a configuration, a magnifying lens effect can be added to the liquid crystal optical element without deteriorating the parallel light characteristics of the projection device. As a result, the optical distance can be further reduced, and the device can be further downsized. Note that, by manufacturing the installation substrate 51 by molding using an acrylic resin or the like, it is possible to mass-produce substrates having substantially the same performance.

The fourth configuration of the projection device of the present invention shown in FIG. 6 is almost the same as the third configuration shown in FIG. 5, except that the projection device is oriented so as to face the concave surface of the installation board 51 of the light valve device 40. (Biconvex lens) 52 having the above power is provided. The field lens 3 is also a plano-convex lens. With such a configuration, in addition to the effect of the third configuration, the uniformity of the image quality is further improved.

FIG. 7 shows another variation of the light valve device. The right side in the figure is the light source 2 side, and the left side is the screen 5 side. Further, regarding the liquid crystal optical element 1, the opposite substrate 11 is arranged on the light source side, and the array substrate 10 is arranged on the screen 5 side. Note that, with respect to (b) to (k), reference numerals of parts common to (a) are omitted.

FIG. 3A shows an array substrate 1 of the liquid crystal optical element 1.
An example is shown in which an installation substrate 50 made of a parallel plate is joined to both the 0 side and the counter substrate 11 side. (B) shows an example in which the installation substrate 51 functioning as a plano-concave lens is joined to the array substrate 10 side of the liquid crystal optical element 1 and the installation substrate 50 made of a parallel flat plate is joined to the counter substrate 11 side. (C) shows an example in which the installation substrate 50 made of a parallel flat plate is bonded to the array substrate 10 side of the liquid crystal optical element 1 and the installation substrate 51 functioning as a plano-concave lens is bonded to the counter substrate 11 side, which is the opposite of (b). . (D)
Are the array substrate 10 side of the liquid crystal optical element 1 and the counter substrate 1
Installation board 51 functioning as a plano-concave lens on both sides
Are shown below. 4E shows an example in which the installation substrate 51 functioning as a plano-concave lens is bonded only to the counter substrate 11 side, contrary to the case shown in FIG. 5 (f), opposite to the case shown in FIG. 5, a mounting substrate 51 functioning as a plano-concave lens is bonded only to the counter substrate 11 side, and a lens (biconvex lens) 52 having positive power so as to face the concave surface. An example in which is provided. (G) shows an example in which a lens 52 having a positive power is provided in the configuration of (b) so as to face the concave surface of the installation substrate 51. (H) shows an example in which a lens 52 having a positive power is provided in the configuration of (c) so as to face the concave surface of the installation substrate 51. (I) shows an example in which a lens 52 having positive power is provided in the configuration of (d) so as to face the concave surface of the installation substrate 51 on the array substrate 10 side.
(J) shows an example in which the lens 52 having a positive power is provided in the configuration of (d) in a manner opposite to the configuration of (i) so as to face the concave surface of the installation substrate 51 on the counter substrate 11 side. . (K)
Is the same as the configuration shown in FIG.
An example is shown in which a lens 52 having a positive power is provided so as to face the concave surfaces of both of the installation substrates 51 on one side. Each of these components can be replaced as a light valve device of the projection device shown in FIGS. 4 and 5, and has the same effect.

(Fourth Embodiment) Next, a fourth embodiment relating to a liquid crystal display device using the liquid crystal optical element of the present invention will be described with reference to FIG. The liquid crystal display device according to the fourth embodiment uses the liquid crystal optical element according to the first embodiment shown in FIG.
The mounting substrate 50 is bonded so as to face the polarizing plate 13 on the side of the transparent substrate 20), and a backlight 70 is provided so as to face the incident surface of the mounting substrate 50.

In the liquid crystal display device of the fourth embodiment, as compared with the conventional TN type liquid crystal display, the light obliquely incident on the installation substrate 50 is absorbed by the light absorber layer 60 provided on the side surface, and Since unnecessary light incident on the layer 12 is reduced, display quality in a halftone is improved, an image is sharpened without blurring, and contrast is improved. Also, the backlight is provided not on the installation substrate 50 side but on the opposite substrate 11.
Even if it is provided on the side, unnecessary light returning to the liquid crystal layer 12 is reduced, so that most of the emitted light becomes parallel light, blurred display is eliminated, and halftone display quality and contrast are improved.
Further, by applying the anti-reflection film 7 to the emission surface of the installation substrate 50, reflection of light emitted from the liquid crystal layer 12 at a small emission angle on the emission surface is reduced, and the contrast of a displayed image can be further improved.

Fifth Embodiment Next, a fifth embodiment of the method for manufacturing the liquid crystal optical element of the first embodiment will be described with reference to FIGS. FIG. 9 shows an array substrate 10 and a counter substrate 1.
1 is a cross-sectional view showing a state in which first and second transparent substrates 20 and 27 serving as 1 are joined on installation substrates 50 and 51;
(A) shows a state of being joined on an installation substrate 50 made of a parallel plate, and (b) shows a state of being joined on an installation substrate 51 having a concave surface, which functions as a plano-concave lens. In FIG. 9, the first and second transparent substrates 20 and 27 are respectively composed of transparent layers 3 whose thickness is regulated by spacers (not shown).
0, it is joined to the installation boards 50, 51. The spacer is provided around the first and second transparent substrates 20 and 27.

Each of the first and second transparent substrates 20 and 27 is a glass plate having a thickness of 1 mm, and the installation substrate 50 is also a glass plate having a thickness of 10 mm. Refractive index is 1.5
2. On the other hand, the installation substrate 5 functioning as a plano-concave lens
1 is formed using, for example, an acrylic resin (refractive index: 1.49). As a material of the transparent body layer 30, for example, a transparent silicone resin KE105 manufactured by Shin-Etsu Chemical Co., Ltd.
1, the thickness is 2 mm, and the refractive index is 1.40. This is supplied as two types of liquids. When the two liquids are mixed and left at room temperature or heated, an addition polymerization reaction occurs and the gel is hardened. In addition, a light absorbing layer 60 is provided on the side surface of each of the installation substrates 50 and 51. As the light absorbing layer 60, a black paint such as a carbon-containing resin is used. Further, an antireflection film 61 is formed on the surface of each of the installation substrates 50 and 51 on the side where the transparent substrate is not bonded.

Next, the electrode forming surface 2 of the first transparent substrate 20
The process of forming the light-shielding resin layer 24 on the drive circuit electrode 21 such as a TFT and the electrode wiring 22 formed on the substrate 0a will be described with reference to FIG. First, a positive resist containing a light absorbing substance or a light reflecting substance is formed on the surface of the first transparent substrate 20 on which the drive circuit electrodes 21 and the electrode wirings 22 are formed. Specifically, FPPR-7000 (manufactured by Fuji Pharmaceutical Co., Ltd.) is applied, and spinner 500 rpm is applied.
A coating film is formed by m5 seconds + 1000 rpm for 35 seconds, and heated at 80 ° C. for 2 minutes on a hot plate.

Next, the first transparent substrate 20 of the installation substrate 50
Is irradiated with ultraviolet rays (i-line) at an intensity of 6.2 mW / cm ² at 300 mJ from the incident surface 50 a on the opposite side to the surface to which is bonded. The incident ultraviolet light is reflected by the drive circuit electrode 21 and the electrode wiring 22, and the positive resist formed thereon is not irradiated with ultraviolet light. Then 1% K
Developed at 23 ° C for 45 seconds in OH aqueous solution, washed with water for 30 seconds,
Heat on hot plate at 120 ° C. for 5 minutes. As a result, as shown in FIG.
And the light-shielding resin layer 2 on the electrode wiring 22 that does not protrude or is insufficient for the TFT width and the wiring width, respectively.
4 are formed.

Here, as is apparent from FIG. 10, most of the ultraviolet light obliquely incident on the incident surface 50a of the installation substrate 50 is absorbed by the light absorbing layer 60 provided on the side surface of the installation substrate 50. At this time, as the thickness of the installation substrate 50 increases, the oblique incident light is absorbed, and the ratio of the normal incident light to the first transparent substrate 20 increases. Further, the difference in the refractive index at each interface between the mounting substrate 50 and the transparent body layer 30 and between the transparent body layer 30 and the first transparent substrate 20 is small, and the reflection at each interface is extremely small. Further, since the light vertically incident on each interface goes straight as it is, the light obliquely incident on the first transparent substrate 20 is extremely small. Therefore, the first transparent substrate 20
, Only the ultraviolet rays substantially incident substantially perpendicularly to the incident surface 50a reach, and the end surface of the formed light-shielding resin layer 24 is substantially perpendicular to the substrate forming surface 20a of the first transparent substrate 20. Becomes

Further, after the substrate side pixel electrode 23 is formed on the electrode forming surface 20a of the first transparent electrode 20 thus treated, a negative resist prepolymer material PN393 (Merck) is applied thereon. After forming a film, an ultraviolet lamp (for example, an ultra-high pressure mercury lamp IML-3000 (trade name)
UV intensity (wavelength 365n)
m light (i-line)) of 14 mW / cm ² for 3 minutes to cure the resin. Thereafter, washing with ethanol and washing with water are performed. As a result, as shown in FIG.
0 drive circuit electrode 21 and electrode wiring 22 on the electrode forming surface
The light transmissive resin layer 25 is formed on the other portions. The surface 10a (the surface of each of the resin layers 24, 25) of the array substrate 10 formed in this way has no steps and is flattened.

An alignment film AL-1051 is provided on both surfaces of the array substrate 10 and the counter substrate 11 formed separately similarly.
(Manufactured by Nippon Synthetic Rubber Co., Ltd.) to form a coating film (not shown). On the counter substrate 11 side, a transparent electrode 28 (shown in FIG. 1)
An alignment film is formed thereon. Furthermore, the alignment film on each of the substrates 10 and 11 is rubbed in one direction using a rayon cloth (rubbing is performed). For example, when manufacturing a liquid crystal optical element without the installation substrates 50 and 51, the installation substrate 50 is removed from the array substrate 10 and the opposing substrate 11, respectively, and the surfaces of the array substrate 10 and the opposing substrate 11 that have been subjected to the alignment treatment are opposed to each other. And a 5 μm spacer (eg,
A straightening ball B-5.0 μm (manufactured by Catalyst Chemical Industry Co., Ltd.) is sandwiched. Further, a liquid crystal material ZLI4792 (manufactured by Merck) is injected into the space between the array substrate 10 and the counter substrate 11 formed by the spacers, and the resin is sealed so that the liquid crystal material does not leak. Further, polarizing plates (see 13 and 14 in FIG. 16) are attached to both outer surfaces of the array substrate 10 and the counter substrate 11, respectively. Thereby, a liquid crystal optical element is obtained.

The characteristics of the liquid crystal optical element of the first embodiment actually manufactured as described above were evaluated as follows. Regarding the evaluation of the viewing angle characteristics of the obtained liquid crystal optical element, a measurement frequency of 3 was measured using LCD-5000 manufactured by Otsuka Electronics.
The measurement was performed at 0 Hz, a light receiving angle of 2.8 °, and 30 ° C. The light transmittance in the state where the light shielding ability in the dark state corresponding to the “black” state on the display is maximized is T ₀ (%), and the maximum light in the bright state corresponding to the “white” state on the display is The transmittance of the transmitted light is defined as T _max (%), and CR = contrast = T _max /
Expressed as T ₀ . The angle of the light receiver is swung right and left and up and down from the front of the element around the element measurement point, and the angle of swing of the light receiver at the boundary measurement point where _Tmax is 90% or less is shown with respect to up, down, left and right, respectively. The leakage light intensity of the emitted light (emission angle with respect to the element incident parallel light (the angle formed with the normal direction of the liquid crystal layer)) is evaluated.

The optical characteristics of the thus obtained liquid crystal optical element before the polarizing plate is attached are such that the emission angle of the outgoing light with respect to the incident light is 0 °.
The illuminance ratio in ° was 83%. Further, the optical characteristics of the liquid crystal optical element after bonding the polarizing plate are: T ₀ = 0.0
8%, T _max = 27.7%, CR = 346.

As a comparative example, the optical characteristics of a conventional conventional counter substrate black matrix-formed TN type liquid crystal optical element not subjected to the above treatment were evaluated. The optical characteristics before attaching a polarizing plate to the conventional liquid crystal optical element were as follows. The illuminance ratio of the outgoing light with respect to the incident light at an outgoing angle of 0 ° was 54%. Further, the optical characteristics of the liquid crystal optical element after bonding the polarizing plate are: T ₀ = 0.07%, T _max = 17.9%, CR = 25
It was 6.

When compared with the conventional example, the liquid crystal optical element of the present invention greatly reduces light loss, increases light use efficiency,
It can be seen that high brightness display is possible. In addition, it was confirmed that the liquid crystal optical element of the present invention did not cause problems such as electric leak and alignment disorder on display. Furthermore, it was also confirmed that the light transmittance was improved and the contrast was improved.
However, since the resin layers 24 and 25 exist, the driving voltage slightly increases.

Although the liquid crystal optical element of the present invention manufactured as described above does not have a black matrix on the opposing substrate 11, it has been confirmed that the liquid crystal optical element does not adversely affect the operation of the TFT and the image. Thereby, the conventional TN
The use efficiency of light incident on the TFT is improved as compared with the liquid crystal optical element. In other words, the aperture ratio of the element is improved as compared with the prior art, and high luminance can be achieved.

The transparent material layer 30 may be transparent as long as it has a role of a binder that does not optically change the refractive index. In other words, it is important that the refractive indices of the transparent body layer 30 and the transparent substrates 20, 27 and the installation substrates 50, 51 are substantially equal. Usually, the transparent substrate 20,
A glass plate is used as the material of the material 27, and its refractive index is around 1.5. The difference between the refractive indexes of the transparent substrates 20 and 27 and the transparent layer 30 is preferably within ± 0.2. Therefore, the refractive index of the transparent body layer 30 is 1.3 or more and 1.7.
It is desirable that: As a material that satisfies this condition, a liquid such as ethylene glycol, an epoxy-based transparent adhesive, a transparent silicone resin that cures in a gel state by irradiation with ultraviolet light, or the like can be used. Alcohols can also be used because the refractive index is around 1.4. Water can also be used because it has a refractive index of 1.3. Further, as a material of the installation substrates 50 and 51, a transparent resin such as an acrylic resin may be used. Transparent substrates 20, 27
If there is an air layer between the substrate and the installation substrates 50 and 51, the light will be extraordinarily refracted there. Therefore, it is necessary to exclude the air layer. Further, as the light absorbing layer 60 (black paint), a carbon-containing resin or the like can be used, and this time, it was cured using BK-530 resin manufactured by Tokyo Ohka Kogyo Co., Ltd.

(Sixth Embodiment) Next, a sixth embodiment of the liquid crystal optical element manufacturing method of the present invention will be described with reference to FIG.
This will be described with reference to FIGS. According to the liquid crystal optical element of the second embodiment shown in FIG. 2, the liquid crystal layer side pixel electrode 26 is formed on the light shielding resin layer 24 and the light transmissive resin layer 25, and the liquid crystal layer side pixel electrode 26 and the substrate side The pixel electrode 23 is electrically connected. With this configuration, each resin layer 2
The display operation is performed at a low driving voltage by eliminating the electric field loss caused by the elements 4 and 25. To realize this, the liquid crystal layer side pixel electrode 2
A method for forming a contact region for obtaining electrical connection between the substrate-side pixel electrode 23 and the light-transmitting resin layer 25 on the substrate-side pixel electrode 23 will be described below.

According to the first method of the sixth embodiment shown in FIG. 12, a gap is formed in the installation substrate 50 at a position and a shape facing the contact region 25a, and a black paint (carbon) or the like is formed in the gap. Is poured to form a rod-shaped light absorbing layer 62. Others are the same as in the third embodiment. Thus, by forming the rod-shaped light absorbing layer 62 in the installation substrate 50, when forming the light-transmitting resin layer 25, a part of the applied negative resist is blocked by the rod-shaped light absorbing layer 62. No UV radiation. As a result, a contact region (hole) 25a is formed in a portion of the light-transmitting resin layer 25 where the ultraviolet ray has not been irradiated, and a part of the substrate-side pixel electrode 23 is exposed. Thereafter, the liquid crystal layer side pixel electrode 26 and the substrate side pixel electrode 23 are formed on the flattened light shielding resin layer 24 and light transmitting resin layer 25 by forming the liquid crystal layer side pixel electrode 26 through the contact region 25a. Are electrically connected.

The first embodiment manufactured by the method of the fifth embodiment
In the liquid crystal optical element of the embodiment (shown in FIG. 1), the liquid crystal layer 12 is driven via the resin layers 24 and 25, so that the driving voltage is higher than in the conventional example due to the electric field loss caused by the resin layers 24 and 25. Become. On the other hand, in the liquid crystal optical element according to the second embodiment (shown in FIG. 2) manufactured by the method of the sixth embodiment, the step of forming the rod-shaped light absorbing layer 62 on the installation substrate 50 and the step of forming the liquid crystal layer side pixel electrode 26 are performed. Requires a forming process,
Although the whole manufacturing method is slightly complicated, the liquid crystal layer side pixel electrode 2
6 is in direct contact with the liquid crystal layer 12, so that there is no electric field loss due to the resin layers 24 and 25, and it is possible to drive at almost the same voltage as in the conventional example. Which method is selected may be appropriately determined according to the required performance and cost of the liquid crystal optical element. In addition, as the thickness of the installation substrate 50 is larger, the uniformity of forming the contact region 25a is improved.

Next, the second embodiment of the sixth embodiment shown in FIG.
In the method described above, the rod-shaped light absorbing layer 62 is not formed directly on the installation substrate 50, but the light shielding formed between the first transparent substrate 20 and the installation substrate 50 at a position and shape facing the contact region 25a. These are combined by a transparent layer 30 with a chrome mask 53 having a pattern therebetween. When forming the light-transmitting resin layer 25, ultraviolet light is irradiated from the incident surface 50a side of the installation substrate 50, but the ultraviolet light is not irradiated to a portion of the negative resist facing the light-shielding pattern of the chrome mask 53, A contact region (hole) 25a is formed in that portion. Others are the same as the first method, and almost the same effects can be obtained.

The third embodiment of the sixth embodiment shown in FIG.
In the method, a gap is formed at a position and a shape facing the contact region 25a instead of the chrome mask 53 in the second method, and a light absorbing material containing a black paint (carbon) or the like is poured into the gap. This uses a mask substrate 54 on which a rod-shaped light absorbing layer 62 is formed. Others are the same as those of the first and second methods. In addition, as the thickness of the mask substrate 54 increases, the accuracy and uniformity of the formed contact region (hole) 25a improve.

The edge of the contact region 25 a formed by the first to third methods was substantially perpendicular to the electrode forming surface of the first transparent electrode 20. However, the inventor has found that such a shape causes a change in electrical loss. Therefore, the fourth method of the sixth embodiment for controlling the shape that can effectively use the electric field to the maximum is shown in FIG.
This will be described with reference to FIG.

In the fourth method shown in FIG. 15, a prism-shaped spacer 63 made of glass is placed on the rod-shaped light absorbing layer 62 in the transparent layer 30 between the first transparent substrate 20 and the installation substrate 50.
Is provided. Prism spacer 6 on light incident surface
The bottom area of 3 is larger than the area of the rod-shaped light absorbing layer 62. In this manner, when the light transmitting resin layer 25 is formed in the same manner as in the second or third method, the contact region 2 formed at a position facing the prism-shaped spacer 63 is formed.
The edge of 5a is not substantially perpendicular to the electrode forming surface of the first transparent electrode 20, but has a forward tapered (inclined) shape. With such a shape, electric field loss is reduced and the driving voltage can be reduced. As a result, it was also found that the drive voltage depends on the hole shape of the contact region 25a. Depending on the size of the prism, the contact area 25
The hole shape of a can be changed. Contact area 25
It was also found that depending on the hole shape of a, the driving voltage could be lower than that of the conventional TN type liquid crystal optical element. Similar results were obtained for the optical characteristics.

[0059]

As described above, according to the liquid crystal optical element of the present invention, at least the array substrate having the driving circuit electrodes and the electrode wirings formed on the surface thereof is provided so as to face the array substrate. A counter substrate, and a liquid crystal layer provided between the array substrate and the counter substrate, wherein a light-shielding resin layer is formed on the driving circuit electrodes and the electrode wiring on the array substrate; A light-transmitting resin layer is formed in a display area other than the circuit electrodes and the electrode wirings, and surfaces of the light-shielding resin layer and the light-transmitting resin layer on the liquid crystal layer side are substantially flattened. Therefore, the surface of the array substrate in contact with the liquid crystal layer is flattened, and there are almost no steps, so that the disorder of the alignment of the liquid crystal molecules due to the steps is eliminated, and uniform liquid crystal alignment is possible. As a result, the display area of the liquid crystal optical element can be effectively used to the maximum. Further, incident light is blocked by the light-absorbing resin layer, and light does not enter the drive circuit electrode and the electrode wiring, so that malfunction due to leakage does not occur. As a result, the conventionally required black matrix of the counter substrate is not required, and a high aperture ratio can be realized. As a result, a high luminance can be realized. It should be noted that the same effect can be obtained regardless of whether light absorbing or light reflecting is selected as the light shielding resin layer.

Further, a substrate-side pixel electrode is formed in a portion other than the driving circuit electrodes and the electrode wiring on the array substrate, and a liquid crystal layer-side pixel electrode is formed on the flat light-shielding resin layer and the light transmitting resin layer. Is formed, and by electrically connecting the substrate-side pixel electrode and the liquid crystal layer-side pixel electrode, the pixel electrode comes into direct contact with the liquid crystal layer, and electric field loss due to the resin layer can be eliminated. As a result, the drive voltage can be made approximately the same as the conventional one.

[0061] Further, on the back surface of the electrode forming surface of the array substrate, the array substrate is substantially connected to the array substrate via one selected from a polymer resin, a gel, and a liquid having substantially the same refractive index as the array substrate. By bonding a mounting substrate having the same refractive index and providing a light absorber layer on the side surface of the mounting substrate, when the mounting substrate side is used as an incident surface, most of the light obliquely incident on the mounting substrate is light. Absorbed by the absorber layer,
The ratio of unnecessary light incident on the liquid crystal layer is reduced. Further, since the light incident on the liquid crystal layer is substantially perpendicular to the incident surface and is parallelized, the output light of the liquid crystal optical element is also parallel light. Therefore, when used as a liquid crystal display element, display quality in halftone is improved, images are sharpened, and contrast is improved. Further, an installation substrate similar to the installation substrate may be bonded to a surface of the opposite substrate opposite to a surface facing the liquid crystal layer. In particular, the concave side of the installation substrate opposite to the surface joined to the array substrate or the counter substrate allows the liquid crystal optical element itself to have a magnifying lens function and simplifies the optical system. be able to. Further, by using a convex lens facing the concave surface, aberration can be corrected and uniformity of image quality can be improved.

On the other hand, according to the projection apparatus of the present invention, at least the light source, the projection lens, and the liquid crystal optical element having any one of the above structures are provided, and light from the light source is transmitted to the array substrate of the liquid crystal optical element. Light is incident on one of the side end surface and the counter substrate side end surface, and light emitted from the other is projected on a screen by the projection lens. That is, by using the liquid crystal optical element of the present invention in which the output light is made parallel, the projection lens can be made smaller than the conventional one.

Further, according to the liquid crystal display device of the present invention, a backlight is provided on the end face on the array substrate side or the end face on the counter substrate side of the liquid crystal optical element having any one of the above structures via a polarizing plate. That is, by using the liquid crystal optical element of the present invention, it is possible to provide a liquid crystal display device which is brighter, has a higher contrast, and has a sharper image than conventional ones.

On the other hand, according to the method of manufacturing a liquid crystal optical element of the present invention, (1) the drive circuit electrode and the electrode wiring are formed on the electrode forming surface of the array substrate, Through a transparent layer having a refractive index substantially the same as the refractive index of the array substrate, has a refractive index substantially the same as the refractive index of the array substrate, bonding the installation substrate having a light absorber layer formed on the side surface, (2) A positive resist containing a light-absorbing substance or a light-reflecting substance is formed on the electrode forming surface including the drive circuit electrodes and the electrode wirings, and a surface of the installation substrate joined to the array substrate. Irradiates ultraviolet rays from the opposite side to form a light-shielding resin layer on the drive circuit electrodes and the electrode wirings through a development and a washing process, and (3) a negative electrode on the electrode forming surface including the light-shielding resin layer. Forming a coating film with a mold resist The surface opposite to the surface bonded to the array substrate is irradiated with ultraviolet light, and the surface of the array substrate is not subjected to the drive circuit electrodes and electrode wirings through a development and cleaning process. Since the light-transmitting resin layer is formed so as to be substantially flat with respect to the light-shielding resin layer, the light-shielding resin layer is formed on the driving circuit electrodes and the electrode wiring on the array substrate, and the driving circuit electrode is formed. And a light-transmitting resin layer formed in a display area other than the electrode wiring, and the liquid crystal optical element of the present invention in which the light-shielding resin layer and the surface of the light-transmitting resin layer on the liquid crystal layer side are substantially flattened. It can be easily manufactured.

Further, as the transparent layer, a polymer resin,
By selecting any one of a gel body and a liquid, it is possible to obtain a refractive index substantially the same as that of the material of the array substrate, for example, glass or acrylic resin. Further, by setting the difference between the refractive index of the array substrate and the refractive index of the transparent body layer and the installation substrate to 0.2 or less, reflection at the interface between the layers is reduced, and the parallelism of incident light is reduced. Can be maintained.

When a substrate-side pixel electrode is formed on a portion of the array substrate other than the portion where the driving circuit electrode and the electrode wiring are formed, and the light-transmitting resin layer is formed, a predetermined pattern is formed. A part of the substrate-side pixel electrode is exposed by partially blocking the ultraviolet light and providing a contact region without partially curing the negative resist, and a liquid crystal layer-side pixel is formed on at least the light-transmitting resin layer. By forming an electrode and electrically connecting the substrate-side pixel electrode and the liquid crystal layer-side pixel electrode via the contact region, electric field loss due to the resin layer can be eliminated, and the driving voltage can be reduced. Can be almost the same as the ones.

Also, a rod-shaped light absorbing layer having a cross section of substantially the same shape as the contact region so as to be substantially perpendicular to the electrode forming surface of the array substrate, on a portion of the installation substrate facing the contact region. Is formed, it is possible to shield ultraviolet rays to a portion where a contact region of a negative resist is to be formed. As a result, the part of the negative resist that was not irradiated with ultraviolet rays did not cure,
A contact region can be easily formed in that portion by development and washing.

Alternatively, even if a mask pattern corresponding to the position and shape facing the contact region is provided between the array substrate and the installation substrate, the contact region can be easily formed similarly. Alternatively, between the array substrate and the installation substrate, a bar-shaped portion having a cross section having substantially the same shape as the contact region in a portion facing the contact region so as to be substantially perpendicular to an electrode forming surface of the array substrate. even when the mask substrate where the light-absorbing layer is formed is bonded via the transparent layer, it can be formed as easily as the contact region.

Further, by providing a prism-shaped transparent spacer at a position facing the rod-shaped light absorbing layer between the array substrate and the installation substrate, the edge of the contact region is formed on the electrode forming surface of the array substrate. Instead of being substantially perpendicular to the surface, it can be formed into a forward tapered (inclined) shape. With such a shape, the electric field loss is further reduced, and the driving voltage can be reduced. In addition, by making the bottom area of the spacer larger than the cross-sectional area of the rod-shaped light absorbing layer on the opposing surface of the rod-shaped light absorbing layer and the spacer, the hole shape of the contact region is changed according to the size of the spacer. Therefore, the driving voltage can be lower than that of the conventional TN type liquid crystal optical element.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing the configuration of a liquid crystal optical element according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view illustrating a configuration of a liquid crystal optical element according to a second embodiment of the present invention.

FIG. 3 is a diagram showing a first configuration of a third embodiment of the projection device of the present invention.

FIG. 4 is a diagram showing a second configuration of the third embodiment relating to the projection device of the present invention;

FIG. 5 is a diagram showing a third configuration of the third embodiment relating to the projection device of the present invention;

FIG. 6 is a diagram showing a fourth configuration of the third embodiment relating to the projection device of the present invention;

FIGS. 7A to 7K show variations of the configuration of a liquid crystal optical element suitable for the projection device of the present invention.

FIG. 8 is a sectional view showing a configuration of a fourth embodiment relating to the liquid crystal display device of the present invention.

FIGS. 9A and 9B are cross-sectional views each showing a state in which an installation substrate and a transparent substrate are bonded via a transparent layer in a fifth embodiment of the method for manufacturing a liquid crystal optical element of the present invention.

FIG. 10 is a sectional view showing a step of forming a light-shielding resin layer on an array substrate in a fifth embodiment of the method for manufacturing a liquid crystal optical element of the present invention.

FIG. 11 is a cross-sectional view showing a configuration of a completed array substrate on which a light-shielding resin layer and a transparent resin layer are formed in a fifth embodiment of the method for manufacturing a liquid crystal optical element of the present invention.

FIG. 12 is a sectional view showing a state in which a light-shielding resin layer and a transparent resin layer are formed on an array substrate in the first method of the sixth embodiment relating to the method for manufacturing a liquid crystal optical element of the present invention.

FIG. 13 is a sectional view showing a state in which a light-shielding resin layer and a transparent resin layer are formed on an array substrate in a second method of the sixth embodiment relating to the method for manufacturing a liquid crystal optical element of the present invention.

FIG. 14 is a cross-sectional view showing a state in which a light-shielding resin layer and a transparent resin layer are formed on an array substrate in a third method of the sixth embodiment relating to the method for manufacturing a liquid crystal optical element of the present invention.

FIG. 15 is a cross-sectional view showing a state in which a light-shielding resin layer and a transparent resin layer are formed on an array substrate in a fourth method according to the sixth embodiment of the method for manufacturing a liquid crystal optical element of the present invention.

FIG. 16 is a perspective view showing an alignment structure of liquid crystal molecules in a TN liquid crystal element when an applied electric field is zero.

FIG. 17 is a perspective view showing an alignment structure of liquid crystal molecules in a state where a voltage equal to or higher than a predetermined threshold is applied to a TN liquid crystal element.

[Explanation of symbols]

 Reference Signs List 1 liquid crystal optical element 2 light source 3 field lens 4 projection lens 5 screen 10 array substrate 10a flattened surface of array substrate 11 opposing substrate 12 liquid crystal layer 13 polarizing plate 14 polarizing plate 15 drive electrode circuit 16 liquid crystal molecule 20 first transparent Substrate 20a Electrode formation surface 20b Incident surface 21 Drive electrode circuit (TFT) 22 Electrode wiring 23 Substrate-side pixel electrode 24 Light-shielding resin layer 25 Light-transmitting resin layer 25a Contact area 26 Liquid crystal layer-side pixel electrode 27 Second transparent substrate 28 Transparent electrode 30 Transparent body layer 40 Light valve device 50 Installation substrate 50a Incident surface 51 Installation substrate 52 Lens 60 Light absorbing layer 61 Antireflection film 62 Rod-shaped light absorbing layer 63 Prism spacer 70 Backlight

────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Tatsuhiko Tamura 1006 Kazuma Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-1-124824 (JP, A) JP-A-7- 209670 (JP, A) JP-A-4-253028 (JP, A) JP-A-5-341269 (JP, A) JP-A-6-308449 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G02F 1/1335 500 G02F 1/13 505 G02F 1/1368

Claims (9)

(57) [Claims] 1. An array substrate having at least a driving circuit electrode and electrode wiring formed on a surface thereof; a counter substrate provided so as to face the array substrate; and between the array substrate and the counter substrate. A method for manufacturing a liquid crystal optical element comprising a liquid crystal layer provided, wherein a drive circuit electrode and an electrode wiring are formed on an electrode forming surface of the array substrate on a surface opposite to the electrode forming surface. Having a refractive index substantially the same as the refractive index of the array substrate through a transparent layer having a refractive index substantially the same as
A mounting substrate having a light absorber layer formed on a side surface is joined, and a positive resist containing a light absorbing material or a light reflecting material is formed on the electrode forming surface including the drive circuit electrode and the electrode wiring, and the coating is formed. Irradiating ultraviolet rays from the surface of the installation substrate opposite to the surface bonded to the array substrate, forming a light-shielding resin layer on the drive circuit electrodes and the electrode wirings through a developing and washing process, A negative type resist is coated on the electrode forming surface including the layer, and ultraviolet light is irradiated from a surface of the installation substrate opposite to a surface bonded to the array substrate, and then subjected to a development and a cleaning process. A method for manufacturing a liquid crystal optical element, comprising: forming a light-transmitting resin layer on a portion of an array substrate on which the drive circuit electrodes and the electrode wiring are not formed so that the surface is substantially flat with respect to the light-shielding resin layer. Wherein said transparent layer is a manufacturing method of the liquid crystal optical element according to claim 1, wherein either selected from a polymer resin, gel and liquid. Wherein the difference in the array refractive index between the transparent layer and the refractive index of the installation substrate of the substrate, a manufacturing method of the liquid crystal optical element according to claim 1 or 2, wherein each is 0.2 or less. 4. A substrate-side pixel electrode is formed on a portion of the array substrate other than the portion where the driving circuit electrode and the electrode wiring are formed, and the light-transmitting resin layer is formed in accordance with a predetermined pattern. A part of the substrate-side pixel electrode is exposed by partially blocking the ultraviolet light and providing a contact region without partially curing the negative resist, and a liquid crystal layer-side pixel is formed on at least the light-transmitting resin layer. electrode is formed, the manufacturing method of the liquid crystal optical element according to claim 1, any three of connecting the via contact region and the substrate-side pixel electrode and the liquid crystal layer side pixel electrode electrically. 5. A rod-shaped light-absorbing layer having a cross section of substantially the same shape as that of the contact region so as to be substantially perpendicular to the electrode forming surface of the array substrate at a portion of the installation substrate facing the contact region. The method for manufacturing a liquid crystal optical element according to claim 4, wherein 6. Between the array substrate and the installation substrate,
5. The method for manufacturing a liquid crystal optical element according to claim 4, wherein a mask pattern corresponding to a position and a shape facing the contact region is provided. 7. Between the array substrate and the installation substrate,
The contact area facing to the transparent body the mask substrate where the light-absorbing layer is formed of a rod-shaped with a cross section of substantially the same shape as the contact region so as to be substantially perpendicular to the electrode formation surface of the array substrate in a portion The method for manufacturing a liquid crystal optical element according to claim 4 , wherein the liquid crystal optical element is bonded via a layer. 8. During the installation substrate and the array substrate, a manufacturing method of the liquid crystal optical element according to claim 5 or 7, wherein providing the prismatic transparent spacer at a position opposite to the light absorbing layer of the bar. 9. The method for manufacturing a liquid crystal optical element according to claim 8 , wherein a bottom area of the spacer is larger than a cross-sectional area of the rod-shaped light absorbing layer at a surface of the rod-shaped light absorbing layer facing the spacer.