JP2003121817A - Electro-optic device and projection type display device provided therewith - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electro-optic device and a projection type display device which eliminate the need for changing a case body by altering a case body structure even due to a structure change such as the presence or absence of adhesion of a transparent substrate; which moreover permit to make the case body thinner than a conventional body; and which further have improved heat radiation. SOLUTION: The case body 30 for housing an electro-optic panel 10 is provided with a stepped surface 32 abutted to the edge parts of a element board 11 larger than a counter substrate 12 in the area.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electro-optical device and a projection type display device having the same.

[0002]

2. Description of the Related Art Generally, a liquid crystal panel used in a projection type display device such as a liquid crystal projector is mounted inside a box body of the projection type display device while being housed in a case body made of synthetic resin or the like. A flexible wiring board is usually connected to the liquid crystal panel, and after the flexible wiring board is connected, it is incorporated into the case body, positioned, and fixed with an adhesive or a holding metal fitting,
The mounting holes and the like of the case body are positioned and fixed to the mounting portion formed inside the projection display device by a method such as screwing.

A liquid crystal panel module as an electro-optical device comprising the above liquid crystal panel and a case body is used as a light valve for receiving a light from a light source and forming a predetermined image in a projection type display device. The image formed by the liquid crystal panel module is enlarged by the projection optical system of the projection type display device and projected on a screen or the like.

FIG. 9 is an exploded perspective view of a conventional liquid crystal panel module, and FIG. 10 is a schematic sectional view of the conventional liquid crystal panel module. In this liquid crystal panel module, an element substrate 11 made of glass or the like and a counter substrate 12 are attached to each other with a predetermined gap therebetween via a sealing material 14, and a liquid crystal panel 10 in which a liquid crystal 10a is injected between both substrates, and a liquid crystal panel. The case body 20 is made of a synthetic resin or the like having a light-shielding property such as a black color.

In the liquid crystal panel 10, the element substrate 11
An active element such as a known TFT (thin film transistor) element, a pixel electrode made of a transparent conductor such as ITO (Indium Tin Oxide), a wiring, an alignment film, and the like are formed on the inner surface of the. Further, known counter electrodes, alignment films and the like are formed on the inner surface of the counter substrate 12 to form an active matrix type liquid crystal panel structure. Further, on the inner surface of the counter substrate 12, a light-shielding layer 12 a as a frame defining the light transmission region (effective display region) of the liquid crystal panel 10 is formed on the outer peripheral portion of the counter substrate 12.

In the projection type display device, the liquid crystal panel module is irradiated with condensed light, and this light is transmitted or blocked by each of a large number of pixels formed in the effective display area of the liquid crystal panel. Form a predetermined image. Each pixel is controlled by an electric field applied by the potential difference between the pixel electrode and the counter electrode. At this time, if scratches are present on the outer surface of the element substrate 11 or the counter substrate 12 of the liquid crystal panel 10 or dust is attached, the image is disturbed by the scratches and dust, and the image quality of the projected image deteriorates. There is a point. In particular, since the image formed by the liquid crystal panel 10 is enlarged and projected, the influence of the scratches and dust is extremely large.

In order to solve the above problems, conventionally, a method of adhering the transparent substrates 1 and 2 on the outer surfaces of the element substrate 11 and the counter substrate 12 of the liquid crystal panel 10 has been developed. These transparent substrates 1 and 2 are bonded to the element substrate 11 and the counter substrate 12 with a transparent adhesive (not shown). The transparent adhesive is used for the element substrate 11 and the counter substrate 12, and the transparent substrates 1, 2
A material with a refractive index that is substantially the same for both
It is desirable to use a transparent silicone adhesive or acrylic adhesive after curing. In this way, the element substrate 1
1. By adhering the transparent substrates 1 and 2 on the outer surface of the counter substrate 12 via a transparent adhesive, even if scratches are present on the outer surfaces of the element substrate 11 and the counter substrate 12, the image quality is not affected, and It is possible to prevent dust from adhering to the outer surfaces of the element substrate 11 and the counter substrate 12. Although scratches may be formed on the outer surfaces of the transparent substrates 1 and 2 or dust may be attached,
Normally, the focus of the light emitted from the light source is set to be inside the liquid crystal panel 10, so that the defocusing effect hardly affects the image quality.

The case body 20 has a hole portion 20a penetrating through the front and back and formed so as to accommodate the liquid crystal panel 10. The hole portion 20a is provided with openings 20b and 20c on both sides of the accommodated liquid crystal panel 10. Is equipped with. An overhanging edge portion 21 that extends inward is formed at the opening edge of the opening portion 20c,
It is configured to engage with the outer surface of the transparent substrate 2 housed in the hole 20a. In addition, a holding frame 24 locked to an engagement protrusion 23 formed on the outer surface of the case body 20 is attached to the opening 20b, and holds the outer surface of the transparent substrate 1 housed in the hole 20a. It is like this. In the middle of the hole 20a, the outer shape of the element substrate 11 is the counter substrate 12
The stepped portion 22 is formed so as to correspond to the shape of the liquid crystal panel 10 projecting outside the outer shape of the liquid crystal panel 10.

When assembling the liquid crystal panel module, after the transparent substrates 1 and 2 are adhered to the front and back of the liquid crystal panel 10, silicon rubber or the like is mainly applied to the protruding portion of the element substrate 11 and the inside of the case body 20. An adhesive as a component is applied, and the liquid crystal panel 10 and the transparent substrates 1 and 2 are introduced into the case body 20 through the opening 20b of the case body 20. At this time, the liquid crystal panel 10 and the transparent substrates 1 and 2 are positioned by the contact between the outer surface of the transparent substrate 2 and the overhanging edge portion 21 in the introduction direction (panel thickness direction), and the liquid crystal panel The panel surface of 10 is positioned by abutting the end of the counter substrate 12 and the inner surface of the hole 20a. Finally, the holding frame 24 is fitted into the engaging projection 23 to hold the panel assembly from the opening 20b so that the panel assembly does not come out, and the adhesive is cured to be integrated.

[0010]

By the way, in the projection type display device provided with the above-mentioned conventional liquid crystal panel module, the transparent substrate is subject to the restrictions of the device configuration, the necessity of dust-proof measures and the need to improve the image quality. The liquid crystal panel module may be configured without bonding one or both of the first and the second. However, since the case body 20 is configured to internally position and hold the panel assembly in which the transparent substrates 1 and 2 are bonded to the liquid crystal panel 10, when the transparent substrate 2 is not bonded to the liquid crystal panel 10. In this case, positioning and holding by the overhanging edge portion 21 becomes impossible, and the case body 20 cannot be used as positioning and holding. Moreover, there is a possibility that light leakage may occur due to the gap. Therefore, it is necessary to prepare a case body for each configuration of the liquid crystal panel module, and the shape of the case body is changed depending on the configuration of the panel assembly depending on the presence or absence of the transparent substrate. However, since it is necessary to deal with this, there is a problem that the manufacturing cost rises and the product management becomes complicated.

The conventional case body 20 has an opening 20.
On the c side, the projecting edge portion 21 has a structure in which the outer surface of the transparent substrate 2 is pressed in the thickness direction.
Is thicker than the panel assembly, and the space required for installing the liquid crystal panel module in the projection type display device becomes large.

Further, in the projection type display device, the liquid crystal panel module is likely to be overheated because strong light is emitted from the light source, and the liquid crystal panel module is efficiently used to prevent malfunction due to temperature rise of the liquid crystal. It needs to be cooled. However, since the transparent substrates 1 and 2 are adhered to each other as described above and the case body 20 is thickly provided with the overhanging edge portion 21, it is difficult to enhance the heat radiation efficiency, and the forced cooling is prevented. Therefore, it is necessary to increase the amount of air blown by the cooling fan, and it is difficult to reduce noise during operation.

Therefore, the present invention is to solve the above-mentioned problems, and an object thereof is to bond a transparent substrate by changing the structure of the case body in an electro-optical device in which the electro-optic panel is housed. It is an object of the present invention to provide an electro-optical device in which the case body does not need to be changed by changing the configuration such as the presence or absence, and the thickness of the case body can be made thinner than in the past, and in which heat dissipation is improved.

[0014]

An electro-optical device according to a first aspect of the present invention is an electro-optical panel in which a first substrate and a second substrate are bonded to each other and an edge of the second substrate extends from an edge of the first substrate. , First
A case body having a board-side opening and a second board-side opening, and housing the electro-optical panel from the second board-side opening, the first board-side opening of the case, and the second board. A positioning portion that accommodates the first substrate and that contacts the edge portion of the second substrate is provided between the side opening portion and the side opening portion.

According to the present invention, the positioning portion is formed in the housing portion for housing the electro-optical panel in the case body, so that the electro-optical panel is positioned at the opening edge of the opening portion of the case body as in the conventional case. There is no need to provide a bulging edge. Therefore, the case body can be formed thin. Further, the heat dissipation of the electro-optical panel can be improved by eliminating the protruding edge portion. Further, on the panel surface of the electro-optical panel, it is possible to dispose a flat transparent substrate or a transparent member such as an optical member such as a microlens or a polarizing plate for reducing an optical influence due to scratches or dust. is there. At this time, since the positioning portion is provided in the housing portion, the positioning of the electro-optical panel is not affected regardless of whether the transparent member is housed or not. Further, it is not necessary to change the case body depending on the presence or absence of the transparent member and the type of other members, and the case body can be shared by a plurality of types of products. Therefore, the demand can be flexibly and promptly met, the manufacturing cost can be reduced, and the manufacturing process can be easily managed.

The positioning section preferably positions the electro-optical panel at least in the thickness direction thereof, and may also position the electro-optical panel also in the panel surface direction. It may be positioned in both the thickness direction and the panel surface direction. The electro-optical panel is not limited to the liquid crystal panel described later, and EL (electroluminescence)
A panel or an organic EL panel can be used.

In the electro-optical device according to the second invention, the first substrate and the second substrate are bonded to each other, and the edge of the second substrate extends from the edge of the first substrate, and the first substrate. A side opening, a second board side opening, a case body having an insertion opening for inserting the electro-optical panel in a direction orthogonal to the first board side opening and the second board side opening, and the case body Between the first substrate-side opening and the second substrate-side opening, a positioning portion that accommodates the first substrate and contacts the edge of the second substrate is provided.

According to the present invention, the electro-optical panel can be accommodated from the insertion opening regardless of the size of the opening on the counter substrate side or the opening on the element substrate side.

Further, by forming an overhanging portion that overlaps the edge portion of the second substrate in the opening portion of the case body on the second substrate side, the second substrate is guided between the positioning portion and the edge portion. Grooves can be formed.

The electro-optical device according to the third invention comprises a first substrate, a second substrate having a larger area than the first substrate, and a transparent member bonded to the first substrate and having a larger area than the first substrate. An electro-optical panel having: a case body having a first board side opening and a second board side opening; and a case body between the first board side opening and the second board side opening of the case body. And a protruding portion sandwiched between the edge portion of the second substrate and the edge portion of the transparent member.

According to this structure, the electro-optical panel can be positioned by the projecting portion.

An electro-optical device according to a fourth aspect of the invention is an electro-optical panel having a first substrate, a second substrate, and a transparent member bonded to the first substrate and having a smaller area than the first substrate. A case body having a first board side opening and a second board side opening, and an edge of the first board between the first board side opening and the second board side opening of the case body. It is characterized by having a positioning portion that abuts against.

With this structure, when the transparent member having a smaller area than the counter substrate is bonded to the counter substrate, the electro-optical panel can be positioned using the counter substrate.

In the first to third inventions, wiring is provided on the second substrate at the edge portion that abuts the positioning portion, a protective film is formed on the wiring, and the positioning portion of the case body is provided. The wiring can be protected by forming it on the portion where the corner portion of the second substrate contacts.

In the first to third inventions, the thickness of the positioning portion of the case body is set to the thickness of the first substrate and the electro-optical panel gap between the first substrate and the second substrate. By making the width narrower than the sum, when the transparent member is bonded onto the first substrate, a gap as an adhesive reservoir can be formed between the bonding portion and the inner surface of the case.

Further, in the first to fourth inventions, a transparent member is bonded to at least one of the first substrate and the second substrate, and at least a part of the transparent member is made of glass having various thermal conductivity. By using a single crystal sapphire which is 20 to 30 times higher than the above, the heat conductivity of the transparent substrate is improved to improve the heat dissipation of the electro-optical panel and the temperature distribution in the panel surface of the electro-optical panel is relaxed. Therefore, it is possible to reduce deterioration of image quality due to overheating and temperature distribution, and it is possible to suppress increase in energy consumption and noise due to the reinforcement of the cooling means.
Further, since the hardness of single crystal sapphire is as high as 2 to 4 times in Vickers hardness as compared with various types of glass, the hardness of the outer surface side portion of the transparent substrate can be increased. Therefore, it is possible to prevent the scratches from being formed on the surface of the transparent substrate and the chipping or cracking of the transparent substrate. Further, since single crystal sapphire has a higher refractive index than glass or the like, the defocus effect can be obtained even if the transparent substrate is formed thin.

Further, in the first to fourth inventions, the transparent member joined to at least one of the first substrate and the second substrate protrudes from the side surface of the case body, and light is shielded from the periphery of the protruding transparent member. By covering with the functional material, it is possible to prevent external light from entering from the peripheral edge.

Further, in the first to fourth inventions, a light shielding member is arranged on at least one of the first substrate and the second substrate, and light is shielded in a region corresponding to an edge portion of the first substrate or the second substrate. Since the light-shielding portion is arranged on the outer peripheral portion of the electro-optical panel when the transparent member is not provided, the light entering the outer peripheral portion of the electro-optical panel is blocked and electricity generated by the light enters. Optical panel malfunction,
Alternatively, the reduction in contrast can be suppressed.

Further, in the first to fourth inventions, the case body has a step portion formed in the opening portion on the second substrate side, and a distance between the positioning portion and the step portion is set to a thickness of the second substrate. By making it wider, when the transparent member is bonded on the second substrate, it is possible to form a gap as an adhesive reservoir between the bonding portion and the inner surface of the case.

It is desirable that the electro-optical device according to each of the above inventions be configured as a projection type display device provided as image forming means. With such a configuration, an electro-optical device having a good heat dissipation property can be provided and a cooling fan and the like can be suppressed, so that power consumption can be reduced and a compact projection display device can be configured.

[0031]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of an electro-optical device according to the present invention and a projection type display device including the same will be described below in detail. Each of the following embodiments has a liquid crystal panel 10 having a conventional structure shown in FIG. 1 as an electro-optical panel,
Its structure is basically the same as the conventional structure. However, the present invention is not limited to the liquid crystal panel, and various electro-optical panels such as an EL (electroluminescence) panel and an organic EL panel can be used.

[First Embodiment] FIG. 1 is a schematic sectional view showing a schematic structure of a liquid crystal panel module which is a first embodiment of an electro-optical device according to the present invention. The case body 30 integrally formed by using a black light-shielding synthetic resin as a material is formed in a planar rectangular frame shape. Case body 3
The hole 30a having a rectangular shape in a plane formed so as to penetrate through the front and back surfaces of the liquid crystal panel 10 formed by bonding the element substrate 11 and the counter substrate 12 to each other at the center position in the thickness direction of the hole 30a. And an opening 30b on the element substrate 11 side and an opening 30c on the counter substrate 12 side.

In the present embodiment, for the sake of convenience of the following description, a virtual space portion formed by the hole portion 30a, which is a substantially central portion in the axial direction of the hole portion 30a, is defined as the housing portion 30A, and the housing portion 30A. The side surface adjacent to the opening 30b side as the outer accommodation portion 30B, and the side surface adjacent to the accommodation portion 30A on the opening 30c side as the outer accommodation portion 3B.
0C.

The liquid crystal panel 10 is accommodated in the accommodating portion 30A of the case body 30, and the inner surface portion 31 provided in the accommodating portion 30A is brought into contact with the end surface portion of the counter substrate 12 thereof, and the liquid crystal panel 10 is moved in the panel surface direction ( It is positioned in the direction parallel to the panel surface). In addition, a step surface 32 that is formed parallel to the panel surface direction is provided in the housing portion 30A, adjacent to the inner surface portion 31. The step surface 32 contacts the inner surface of the protruding portion (protruding portion) 11a, which is a portion where the element substrate 11 projects outward from the counter substrate 12, and positions the liquid crystal panel 10 in the thickness direction.

When wiring, terminals, etc. are formed on the surface of the element substrate 11 facing the overhanging portion 11a,
They may be covered with a hard protective film (such as an overcoat film), and the stepped surface 32 may be in contact with this protective film. In addition, a COG (Ch that has an electronic component such as an integrated circuit mounted on the surface of the element substrate 11 facing the overhanging portion 11a).
In the case of having an ip on glass structure, the step surface 32 is configured to avoid electronic parts, for example, only contact at three or more corners of the four corners of the liquid crystal panel 10. It is desirable that the step surface 32 is partially formed on the surface.

A step surface 33 facing the step surface 32 is formed on the outer storage portion 30B formed on the opening 30b side of the storage portion 30A, and further outside of the step surface 33 (on the side of the opening 30b). An inner surface portion 35 that is flat and parallel to the thickness direction of the panel is formed. The outer end of the inner surface portion 35 serves as an opening edge portion of the opening 30b. That is, the inner surface portion 35 is formed so as to be drawn into the case body 30 while the opening shape of the opening portion 30b is substantially maintained, or the outer housing portion 30B has the same opening shape as the opening portion 30b. It has almost the same planar shape.

Since the gap between the step surfaces 32 and 33 facing each other is formed to be slightly larger than the thickness of the element substrate 11, the position where the step surface 33 is formed is higher than that of the junction between the element substrate 11 and the transparent substrate 1. It is slightly misaligned to the opening 30b side.

A step surface 34 is formed in the outer housing portion 30C formed on the side of the opening 30c of the housing portion 30A, the step surface 34 being opposite to the step surface 32 with the inner surface portion 31 interposed therebetween.
A flat inner surface portion 36 that is parallel to the thickness direction of the panel is formed on the outer side of the step surface 34 (on the side of the opening 30c). The outer end of the inner surface portion 36 serves as an opening edge portion of the opening 30c. That is, the inner surface portion 36 is formed so as to be drawn into the inside of the case body 30 in a state where the opening shape of the opening portion 30c is substantially maintained, or the outer housing portion 30C has the same opening shape as the opening portion 30c. It has almost the same planar shape.

The distance between the step surfaces 32 and 34, which are in the mutually opposite posture, is formed to be slightly smaller than the sum of the thickness of the counter substrate 12 and the panel gap (the distance between the element substrate 11 and the counter substrate 12). Therefore, the position where the step surface 34 is formed is slightly larger than the joint portion between the counter substrate 12 and the transparent substrate 2 in the opening portion 3.
It is shifted to the 0b side.

Thus, the step surface 33 and the step surface 34 are
Are deviated from the joints between the element substrate 11 and the transparent substrate 1 and the joints between the counter substrate 12 and the transparent substrate 2, respectively, so that the joints between the element substrate 11 and the transparent substrate 1 and the case body 30.
A gap is formed between the case body 30 and the joint between the counter substrate 12 and the transparent substrate 2. These gaps are provided between the element substrate 11 and the transparent substrate 1 and between the counter substrate 12 and the transparent substrate 2.
When it is bonded with a transparent adhesive, the space becomes a space for accommodating the transparent adhesive that has overflowed to the outside, so that the transparent adhesive can be prevented from overflowing to the outside of the case body 30, or the outside of the case body 30 can be prevented. It is possible to reduce the overflow amount of the transparent adhesive.

Further, since the stepped surfaces 33 and 34 are formed between the accommodating portion 30A and the outer accommodating portion 30B, respectively, the end portion of the element substrate 11 and the end portion of the transparent substrate 1 are opposed to each other. The end of the substrate 12 and the end of the transparent substrate 2 can be accommodated so as to be displaced in the panel surface direction. Therefore, a step is formed between the end of the element substrate 11 and the end of the transparent substrate 1, or between the end of the counter substrate 12 and the end of the transparent substrate 2. Even if the transparent adhesive overflows from the joint between the element substrate 11 and the transparent substrate 1 or the joint between the counter substrate 12 and the transparent substrate 2, if the overflow amount is small, the transparent adhesive gets wet with the substrate material. Since the transparent adhesive that has overflowed due to the property and surface tension is collected in the step and does not contact the inside of the case body, it is possible to prevent the transparent adhesive from leaking from the case body to the outside. Of course, if the overflow amount of the transparent adhesive is large, it is not possible to stay at the step. However, even in this case, since the gaps are formed between the panel assembly and the inner surface of the case by the step portions 33 and 34 of the case body, the transparent adhesive does not leak to the outside of the case body due to the gap. Can be configured to.

Further, in this case body 30, the transparent substrates 1 and 2 can be introduced into the outer housing portions 30B and 30C through the openings 30b and 30c, respectively. Specifically, since the flat inner surface portions 35 and 36 are formed inside the openings 30b and 30c in parallel with the thickness direction of the panel, the shapes and sizes that can be introduced through the openings 30b and 30c are large. If the transparent substrates 1 and 2, the liquid crystal panel 1 as it is
Can be glued to zero. Therefore, the transparent substrates 1, 2
When the liquid crystal panel 10 is not necessary, the transparent substrates 1 and 2 need not be introduced only by introducing the liquid crystal panel 10 into the case body 30.
When at least one of the transparent substrates 1 and 2 is required, after the liquid crystal panel 10 is introduced into the case body 30, the opening 30
At least one of the transparent substrates 1 and 2 is introduced from b and 30c, and the element substrate 11 or the counter substrate 12 is formed by a transparent adhesive
It can be glued on the outer surface of. Therefore, the same case body 30 can be used regardless of the necessity of the transparent substrate, and the assembly process of the liquid crystal panel module can be performed simply by omitting or adding an assembly procedure depending on the necessity of the transparent substrate. It can be easily changed and implemented.

In this embodiment, the opening 3
0b and the opening 30c are formed in the same shape and size,
The transparent substrates 1 and 2 can be made of glass plates having the same shape and size. Therefore, the process of handling the transparent substrate becomes easy and the cost can be reduced.

Since the liquid crystal panel 10 is positioned in the panel surface direction and the thickness direction by the inner surface portion 31 and the step surface 32 with respect to the case body 30, the liquid crystal panel 10 and the case body 30 are further separated by, for example, the step surfaces 32 and 33. If the liquid crystal panel 10 is fixed with an adhesive or the like arranged in the groove portion between the liquid crystal panel 10 and the case body 30, the liquid crystal panel 10 is fixed while being positioned. However, as the adhesive, for example, silicon RTV
An adhesive having elasticity even after being cured, such as a rubber-based adhesive, may be used, and in this case, the adhesive is fixed to the case body 30 with some flexibility.

As described above, the liquid crystal panel 10 is attached to the case body 3
0, and the transparent substrates 1 and 2 are introduced through the openings 30b and 30c and adhered to the liquid crystal panel 10, so that the panel assembly including the liquid crystal panel 10 and the transparent substrates 1 and 2 as a whole has the case body 30. It will be fixed to. Figure 1
In the conventional support 20 shown in FIG. 0, since the liquid crystal panel 10 and the transparent substrate are positioned in the panel thickness direction by the overhanging edge portion 21 formed at the opening edge portion of the opening portion 20c, the case body 20 is a panel. Although it is inevitably thicker than the thickness of the assembly, in the present embodiment, since the positioning is performed by the step surface 32 formed inside the accommodating portion 30A, the outer surface of the transparent substrate is different from the conventional one. It is not necessary to form the projecting edge portion 21 for locking the case, and the case body 30 can be formed thin. Further, for the same reason, it is not necessary to form a portion including the protruding edge portion 21 formed on the outer side of the transparent substrate 2, and the opening portion 30c is provided.
Since the opening area of can be increased, the heat dissipation can be improved.

Light-shielding layers 1a, 2a are preferably formed on the outer peripheral portions of the transparent substrates 1, 2. Light shielding layers 1a, 2
a is for evaporating aluminum or the like on the transparent substrates 1 and 2,
It can be formed by printing a colored layer such as black. It is more preferable to form the light shielding layers 1a and 2a on the inner surfaces of the transparent substrates 1 and 2 (surfaces on the side facing the liquid crystal panel 10) from the viewpoint that stray light can be blocked. If the light-shielding layers 1a and 2a are configured such that the inner edge portions thereof are located at positions overlapping with the light-shielding layer 12a formed inside the liquid crystal panel 10, light leakage can be further prevented.

In order to more completely shield light between the transparent substrates 1 and 2 and the liquid crystal panel 10 and the case body 30, the peripheral portions of the transparent substrates 1 and 2 and the opening 30b in the case body 30, as shown in the drawing, It is more preferable to apply a light-shielding substance 3 such as a black resin between the opening edge of 30c and cure it.
Further, the light shielding material 3 may be applied to one opening edge of the openings 30b and 30c.

(Structure of Projection Display Device) The liquid crystal panel module of this embodiment is designed to be installed inside the projection display device shown in FIG. The structure of a liquid crystal projector 120, which is a projection type display device using the above liquid crystal panel module, will be described with reference to FIG. In the housing of the liquid crystal projector 120, a light source lamp 121, two dichroic mirrors 122 and 123, and three reflection mirrors 124, 125 and 1 are provided.
26 and 26 are installed. As the light source lamp, a halogen lamp, a metal halide lamp, a xenon lamp or the like can be used. The light emitted from the light source is R (red) and G by the dichroic mirrors 122 and 123.
It is separated into (green) and B (blue) light fluxes. Three liquid crystal light valves 133, 134, and 135 are installed in the device so as to surround the cubic dichroic prism 136 from three directions. The above-mentioned reflection mirrors 124, 1
Reference numerals 25 and 126 guide R, G and B lights to the liquid crystal light valves 133, 134 and 135. In addition,
The B (blue) light has an entrance lens 127, a relay lens 128, and an exit lens 12 in order to prevent light loss due to a long optical path.
Guided through 9.

The above liquid crystal light valves 133, 134, 1
35 is composed of the above liquid crystal panel module,
It is installed by inserting and fixing the case body 30 into a mounting portion (not shown) in the optical unit. These liquid crystal light valves are controlled by control driving means (not shown) according to desired image information, and modulate the respective light fluxes R, G, B.

The above liquid crystal light valves 133, 134, 13
The respective light fluxes R, G, and B, which are respectively modulated by 5 to form a predetermined image component, are combined by a cubic dichroic prism 136, and a projection lens unit 137 causes a screen 138 at a predetermined position.
Projected on top.

In the liquid crystal projector 120, if the present embodiment is made thin, the liquid crystal light valve can also be made thin, so that the entire device can be made compact. Further, since the heat dissipation of the liquid crystal panel module is improved as described above, it is possible to reduce the air flow rate of the cooling fan for forced cooling in the projection type display device equipped with the liquid crystal panel module, It is possible to reduce noise.

[Second Embodiment] Next, a second embodiment will be described with reference to FIG. The second embodiment has the same configuration as that of the first embodiment and is different in that the transparent substrate 2 is not mounted. Therefore, different points will be described. In this embodiment, since the liquid crystal panel 10 and the case body 30 similar to those in the above-described embodiment are included, the same parts are designated by the same reference numerals, and the description thereof will be omitted. In this embodiment, the transparent substrate 2 shown in the above embodiment is not adhered to the outer surface of the counter substrate 12 of the liquid crystal panel 10. Instead, the light-shielding sheet 4 in which the light-shielding layer 4a is formed only on the peripheral portion of the transparent resin base material is attached to the outer surface of the counter substrate 12 inside the case body 30. Then, the same light-shielding substance 3 as described above is attached between the peripheral portion of the light-shielding sheet 4 and the inner surface portion 36 of the case body 30.

The light-shielding sheet 4 may be sized so that it fits snugly into the outer housing portion 30C of the case body 30 as shown in the drawing, and the peripheral edge portion abuts the inner surface portion 36, or The counter substrate 12 may be formed to have substantially the same size as the outer surface of the counter substrate 12, and the space between the outer surface and the inner surface portion 36 may be filled with the light shielding material 3.

[Third Embodiment] Next, a third embodiment will be described with reference to FIG. The third embodiment has the same configuration as the first embodiment and is different from the first embodiment in that both the transparent substrates 1 and 2 are not mounted. Therefore, only different points will be described. In this embodiment, since the liquid crystal panel 10 and the case body 30 similar to those in the above-described embodiment are included, the same parts are designated by the same reference numerals, and the description thereof will be omitted. In this case, after housing the liquid crystal panel 10 in the case body 30,
Instead of the light-shielding sheet 4 of the second embodiment, the light-shielding frame body 5 is attached to the outer surface of the counter substrate 12 as well as the outer surface of the element substrate 11. After that, the light shielding material 3 is applied to the light shielding frame 5.
The point of attachment between the peripheral portion of the case and the case body 30 is the same as in the second embodiment.

In the configuration of the second embodiment, the light shielding sheet 4
Had a transparent resin substrate on the display surface of the panel.
In the configuration of the embodiment, the light-shielding frame body 5 is provided only on the outer periphery of the panel display surface. The light-shielding sheet 4 is suitable for preventing scratches and dust from adhering to the panel display surface and for the defocus effect, and the light-shielding frame 5 has no transmittance on the panel display surface. Can be prevented, and can also function as positioning when the transparent substrate is attached, which will be described later with reference to FIG.

The light-shielding sheet 4 is used in the second embodiment and the light-shielding frame 5 is used in the third embodiment. However, these are appropriately selected according to the required characteristics of the product. Can be used.

Further, in this embodiment, the transparent substrates 1 and 2 are used.
The case body 3 may or may not be attached to the liquid crystal panel 10.
Since 0 can be commonly used, it is not necessary to prepare various kinds of case bodies 30, and the manufacturing cost and the labor of parts management can be reduced. In particular, only the liquid crystal panel 10 is previously housed in the case body 30, and then the openings 30b, 3
If the transparent substrates 1 and 2 are introduced and bonded from 0c, the operation of accommodating the liquid crystal panel 10 in the case body 30 is common in any of the cases shown in FIGS. 1 to 3. It does not complicate the manufacturing process.

In the present embodiment, the polarizing plate is not attached to the liquid crystal panel module, and the polarizing plate is installed on the side of the projection type display device on which the liquid crystal panel module is installed.
However, a polarizing plate may be installed on the liquid crystal panel module side, and in this case, the polarizing plate can be directly attached to the panel surface of the liquid crystal panel 10, but the case body 30
With the above configuration, the polarizing plate can be easily attached to the outer surfaces of the transparent substrates 1 and 2 even after the assembly of the liquid crystal panel module is completed. Further, as will be described later, there is no problem even if at least one of the transparent substrates 1 and 2 is not mounted. However, when at least one of the transparent substrates 1 and 2 is not mounted, the liquid crystal panel 10 is attached to the case body 30. It is also possible to directly attach the polarizing plate on the panel surface after housing in.

Incidentally, in the above embodiment, the outer housing portion 30.
The case where the transparent substrates 1 and 2 are housed in B and 30C has been described, but even when the transparent substrates 1 and 2 are not used at all,
As described above, the liquid crystal panel 1 is used as the liquid crystal panel module.
0 may or may not be attached to the polarizing plate on the outer surface of the panel, and even in the case where the polarizing plate is or may not be accommodated in the outer accommodating portion, the effect of sharing the case body can be obtained. You can

As the other member to be housed in the outer housing part, in addition to the above, a microlens array, a color filter, an antireflection plate, an optical phase plate, etc. can be considered.

[Fourth Embodiment] Next, a fourth embodiment of the present invention will be described with reference to FIG. In this embodiment, a case body 40 having a structure similar to that of the first embodiment is provided. The case body 40 is the same as the case body 30 of the first embodiment except the structure of the outer surface portion thereof, and the description thereof will be omitted.

The case body 40 has two pairs of engaging projections 43 and 45 formed on the outer surface thereof, and the pair of engaging projections 43 formed on the opening 40b side has a light-shielding holding frame. Four
4 is attached, and the inner edge portion 44a of the holding frame 44 projects into the opening 40b. Similarly, a holding frame 46 having a light shielding property is attached to the pair of engaging projections 45 formed on the opening 40c side, and the inner edge portion 46 of the holding frame 46 is attached.
a projects into the opening 40c.

In this embodiment, the opening 40 is formed as described above.
Since the holding frames 44 and 46 can be attached to both b and 40c, when the transparent substrates 1 and 2 are housed in the case body 40 together with the liquid crystal panel 10 as shown by the dotted line in the figure, the transparent substrate 1 2, the outer surface of which can be retained. Therefore, after the transparent substrates 1 and 2 are bonded to the outer surface of the liquid crystal panel 10 via the transparent adhesive, the transparent substrates 1 and 2 are temporarily held until the transparent adhesive is cured by heating or the like. Can be fulfilled Also, the holding frame 4
In the case where the light shielding layers 1a and 2a are not provided on the transparent substrates 1 and 2 in place of the light shielding layers 1a and 2a of the transparent substrates 1 and 2 and the above-mentioned light shielding substance 3, since 4 and 46 are formed of a light shielding material. , The transparent substrates 1 and 2 when the light-shielding substance 3 is not applied
The light blocking function can be achieved when the case itself is not housed in the case body 40. The holding frames 44, 46
May be configured to have only the light-shielding function without the function of holding the transparent substrates 1 and 2 and the liquid crystal panel 10, and the transparent substrates 1, 2 without the light-shielding function.
It may be configured to have only the function of holding the liquid crystal panel 10.

[Fifth Embodiment] Next, a fifth embodiment of the present invention will be described with reference to FIG. FIG. 5A is a schematic cross-sectional view showing the schematic structure of the liquid crystal panel module of the fifth embodiment, and FIG. 5B is a schematic plan view. The present embodiment has the same configuration as that of FIG. 1 which is the first embodiment, the same reference numerals are given to common configurations, the description thereof is omitted, and only different points will be described. In this embodiment, the transparent substrates 1, 2 surface-bonded to the liquid crystal panel 10 are used.
Is formed smaller than the element substrate 11 of the liquid crystal panel 10 and the amount of the transparent substrates 1 and 2 used is reduced to reduce the manufacturing cost. In the present embodiment, the hole 50a of the case body 50 is formed with an opening 50d that opens downward in FIG. 5B, and the liquid crystal panel 10 is moved in the panel surface direction from the opening 50d. It can be inserted while sliding.
The liquid crystal panel 10 is introduced from the opening 50d in a state in which the flexible wiring board 16 shown in FIG. 5B is connected, and is fixed to the case body 50 by an adhesive described later.

In this embodiment, the engaging projection 53 is formed on the outer surface of the case body 50, and the holding frame 54 is attached to the engaging projection 53.
By attaching the, the panel assembly can be provided with a temporary holding function and a light shielding function as in the second embodiment. However, the engagement protrusion 53 and the holding frame 5
4 does not have to be formed as in the first embodiment, and
The holding frame may also be formed on the side of the opening 50c so that the holding frame can be attached as in the second embodiment.

[Sixth Embodiment] Next, a sixth embodiment of the present invention will be described with reference to FIG. 6 is the sixth
It is a typical outline sectional view showing an outline structure of a liquid crystal panel module of an embodiment. The present embodiment has the same configuration as that of the first and fifth embodiments, the same reference numerals are given to the common configurations, the description thereof is omitted, and only different points will be described. In this embodiment, the transparent substrates 1 and 2 that are surface-bonded to the liquid crystal panel 10 are formed smaller than the element substrate 11 of the liquid crystal panel 10, and the amount of the transparent substrates 1 and 2 used is reduced to reduce the manufacturing cost. This is similar to the third embodiment in this respect. The difference from the fifth embodiment is that a frame body 65 for positioning the transparent substrate 1 is provided.

In the case of this embodiment, the liquid crystal panel 10 can be inserted without sliding, and the transparent substrate 1 can be positioned. In addition, by making the frame body 65 have a light-shielding function and appropriately selecting the size of the frame body,
It can also function as the light-shielding frame 5 described in the third embodiment, and can be used even in a configuration in which the transparent substrate 1 is not attached.

[Seventh Embodiment] Next, a seventh embodiment of the electro-optical device according to the invention will be described with reference to FIG. FIG. 7 is a schematic sectional view showing the schematic structure of the liquid crystal panel module of the seventh embodiment. In this embodiment, the liquid crystal panel 10 has a case body 4 similar to that of the first embodiment.
Housed by 0. In this embodiment, the transparent substrates 6 and 7 having a laminated glass structure are surface-bonded to the panel surface of the liquid crystal panel 10. Openings 40b, 40c of the case body 40
The edge of the opening of the liquid crystal panel 1
It is located on the 0 side. The transparent substrates 6 and 7 used in this embodiment each have a laminated structure in which sapphire layers 6c and 7c made of single crystal sapphire are attached to the glass layers 6b and 7b. As the glass layers 6b and 7b, for example, inorganic glass having an appropriate thickness such as 0.7 mm, which is chemically strengthened by an ion exchange method, is used. As the sapphire layers 6c and 7c, those formed by polishing to have a final thickness of about 300 μm are used. Although the thickness of the sapphire layer is not limited to the above value, it is arbitrary, but it is actually preferably within the range of 50 to 1000 μm in terms of achieving both mechanical strength and material cost. . For bonding the glass layers 6b and 7b to the sapphire layers 6c and 7c, a liquid or sheet type epoxy adhesive or the like can be used. It is preferable that the adhesive has sufficient adhesive strength and does not reduce the light transmittance of the transparent substrates 6 and 7 (having transparency after curing). Here, after adhering the glass layer and the sapphire layer, either one of the layers may be polished to reduce the thickness, or the ends may be processed after adhering the two layers. In this embodiment, the transparent substrates 6, 7
Both of these are surface-bonded to the liquid crystal panel 10 so that the surfaces of the sapphire layers 6c and 7c are outer surfaces. Since the sapphire layer has a high hardness, the surface is not easily scratched and has excellent performance as a dustproof substrate. Moreover, since the thermal conductivity is high, the heat dissipation of the liquid crystal panel 10 can be improved. In addition, single crystal sapphire
Higher refractive index compared to the various glass (refractive index about _{1.4~1.5) (n o = 1.768,} n e = 1.760) for having, even thin transparent substrate 6,7 above The defocusing effect of can be fully exerted.

In this embodiment, since the transparent substrates 6 and 7 have a structure in which single crystal sapphire and another transparent member are bonded together, damage and damage can be prevented without using a large amount of expensive single crystal sapphire. It is possible to obtain the effect, a sufficient defocusing effect, the effect of improving heat dissipation, and the like.

An adhesive 3 as a light-shielding substance is applied to the peripheral edges of the transparent substrates 6 and 7 protruding from the case body 40. Thereby, it is possible to prevent outside light from entering from the peripheral edges of the transparent substrates 6 and 7. Furthermore, the case body 40
A light-shielding adhesive may be applied between the inner surface of the transparent substrate and the inner surfaces of the transparent substrates 6 and 7.

When the transparent substrates 6 and 7 in which the sapphire layer and another transparent member are laminated as in the seventh embodiment are used, only the thickness portion of the sapphire layer is opened from the openings 40b and 40c of the case body 40. It is preferable to configure so as to project outside the case in order to prevent damage to other transparent materials (such as glass). Incidentally, also in the present embodiment, the light shielding film 4
By arranging a and the light shielding layer 12a provided on the liquid crystal layer side of the counter substrate 12 so as to overlap in a plan view, light leakage from the periphery to the liquid crystal layer can be prevented.

Further, in the above embodiment, the transparent substrate has a structure in which the single crystal sapphire and another transparent member are bonded together, but a single single crystal sapphire may be used.

Further, in the above-described embodiment, the element substrate 11
The counter substrate 12 and the counter substrate 12 may be formed of a quartz substrate, a glass substrate, or the like, but in any of the embodiments, at least one of the element substrate and the counter substrate may be formed of single crystal sapphire. According to this structure, since the element substrate and the counter substrate are formed of single crystal sapphire in addition to the transparent substrate, the heat dissipation rate of the electro-optical panel is improved by improving the thermal conductivity and the panel surface of the electro-optical panel is improved. Since the temperature distribution inside is relaxed, it is effective for further reducing the deterioration of image quality due to overheating and temperature distribution.

The electro-optical device of the present invention and the projection type display device using the same are not limited to the examples shown in the drawings.

In each of the embodiments, the size of the counter substrate is smaller than the element substrate, but the counter substrate may be larger than the element substrate.

Further, the electro-optical device can be applied to not only the active matrix type but also the simple matrix type.

Of course, various changes can be made without departing from the scope of the present invention.

[0078]

As described above, according to the first aspect of the invention, the positioning portion is formed in the housing portion of the case body for housing the electro-optical panel, and the outer side is closer to the opening than the positioning portion. Since the accommodation section is provided,
Since it is not necessary to provide a projecting edge portion for positioning the electro-optical panel at the opening edge of the opening portion of the case body as in the conventional case, the case body can be formed thin. Also,
The heat dissipation of the electro-optical panel can be improved by eliminating the overhanging edge portion.

Further, as the other member, the outer accommodating portion is
It is possible to accommodate various other members such as a transparent substrate for reducing the optical influence of scratches or dust on the panel surface of the electro-optical panel, or another optical member bonded. At this time, since it does not affect the positioning of the liquid crystal panel whether or not other members are accommodated in the outer accommodating portion, there is no need to change the case body depending on the presence or absence of other members or the type of other members. Since the case body can be shared with other products, it can respond to demand flexibly and promptly, reduce the manufacturing cost,
Moreover, it is possible to easily manage the manufacturing process.

According to the second aspect of the invention, the electro-optical panel can be accommodated through the insertion opening regardless of the size of the opening on the counter substrate side or the opening on the element substrate side.

According to the third aspect of the invention, the electro-optical panel can be positioned by the projecting portion.

According to the fourth aspect of the invention, when the transparent member having a smaller area than the counter substrate is bonded to the counter substrate, the electro-optical panel can be positioned using the counter substrate.

[Brief description of drawings]

FIG. 1 is a schematic sectional view schematically showing a schematic structure of a first embodiment of an electro-optical device according to the invention.

FIG. 2 is a schematic sectional view schematically showing a schematic structure of a second embodiment of the electro-optical device according to the invention.

FIG. 3 is a schematic sectional view schematically showing a schematic structure of a third embodiment of the electro-optical device according to the invention.

FIG. 4 is a schematic sectional view schematically showing a schematic structure of a fourth embodiment of the electro-optical device according to the invention.

FIG. 5A is a schematic cross-sectional view schematically showing a schematic structure of a fifth embodiment of the electro-optical device according to the invention,
(B) is a schematic plan view which shows the schematic structure of 5th Embodiment typically.

FIG. 6 is a schematic sectional view schematically showing a schematic structure of a sixth embodiment of the electro-optical device according to the invention.

FIG. 7 is a schematic cross-sectional view showing the structure of a seventh embodiment of the electro-optical device according to the invention.

FIG. 8 is a schematic schematic configuration diagram showing a schematic configuration of a projection type display device using the electro-optical device according to the invention.

FIG. 9 is an exploded perspective view showing a schematic structure of a conventional liquid crystal panel module.

FIG. 10 is a schematic sectional view schematically showing a schematic structure of a conventional liquid crystal panel module.

[Explanation of symbols]

1, 2, 6, 7 transparent substrate 1a, 2a light shielding layer 3 light-shielding substances 4 Shading sheet 4a light shielding layer 5 Light-shielding frame 10 LCD panel 11 element substrate 12 Counter substrate 12a light shielding layer 30, 40, 50 case body 30A accommodation 30B, 30C outer housing 30a hole 30b, 30c, 40b, 40c opening 31, 35, 36 Inner surface part 33, 34 step surface 65 Positioning frame for transparent substrate

[Procedure amendment]

[Submission date] October 24, 2002 (2002.10.
24)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Claims

[Correction method] Change

[Correction content]

[Claims]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction content]

[0014]

An electro-optical device according to a first aspect of the present invention comprises a first substrate and a second substrate bonded together, the edge of the second substrate extending from the edge of the first substrate, and An electro-optical panel in which a transparent member is bonded to the first substrate;
A case body having a board-side opening and a second board-side opening, and housing the electro-optical panel from the second board-side opening, the first board-side opening of the case, and the second board. A positioning portion that accommodates the first substrate and contacts the edge portion of the second substrate is provided between the side opening portion and the side opening portion, and the first substrate side opening portion and the second substrate side opening portion of the case body. A light-shielding substance is filled between at least one of the above and the transparent member.

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] 0015

[Correction method] Change

[Correction content]

According to the present invention, the positioning portion is formed in the housing portion for housing the electro-optical panel in the case body, so that the electro-optical panel is positioned at the opening edge of the opening portion of the case body as in the conventional case. There is no need to provide a bulging edge. Therefore, the case body can be formed thin. Further, the heat dissipation of the electro-optical panel can be improved by eliminating the protruding edge portion. Further, on the panel surface of the electro-optical panel, it is possible to dispose a flat transparent substrate or a transparent member such as an optical member such as a microlens or a polarizing plate for reducing an optical influence due to scratches or dust. is there. At this time, since the positioning portion is provided in the housing portion, the positioning of the electro-optical panel is not affected regardless of whether the transparent member is housed or not. Further, it is not necessary to change the case body depending on the presence or absence of the transparent member and the type of other members, and the case body can be shared by a plurality of types of products. Therefore, the demand can be flexibly and promptly met, the manufacturing cost can be reduced, and the manufacturing process can be easily managed.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction content]

The positioning section preferably positions the electro-optical panel at least in the thickness direction thereof, and may also position the electro-optical panel also in the panel surface direction. It may be positioned in both the thickness direction and the panel surface direction. The electro-optical panel is not limited to the liquid crystal panel described later, and EL (electroluminescence)
A panel or an organic EL panel can be used.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0017

[Correction method] Change

[Correction content]

The electro-optical device according to the second invention comprises a first substrate, a second substrate having an area larger than that of the first substrate, and a transparent member bonded to the first substrate and having a larger area than the first substrate. An electro-optical panel having: a case body having a first board side opening and a second board side opening; and a case body between the first board side opening and the second board side opening of the case body. A transparent substrate having an overhanging portion sandwiched between the edge of the second substrate and the edge of the transparent member, and at least one of the first substrate-side opening and the second substrate-side opening of the case body; A light-shielding substance is filled between the member and the member.

[Procedure correction 6]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction content]

According to this structure, the electro-optical panel can be positioned by the projecting portion.

[Procedure Amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction content]

An electro-optical device according to a third aspect of the present invention is an electro-optical panel in which a first substrate and a second substrate are bonded to each other, and an edge of the second substrate extends from an edge of the first substrate, and a first substrate. A side opening, a second board side opening, a case body having an insertion opening for inserting the electro-optical panel in a direction orthogonal to the first board side opening and the second board side opening, and the case body Between the first board-side opening and the second board-side opening, a positioning section for accommodating the first board and abutting on an edge of the second board is provided, and a thickness of the positioning section. Is set to be narrower than the sum of the thickness of the first substrate and the electro-optical panel gap between the first substrate and the second substrate, and a transparent member is bonded to the first substrate, A gap is formed between the periphery of the joint with the transparent member and the inner surface of the case, and the case is Body and at least one of the first substrate side opening and the second substrate-side opening, the light-shielding material, characterized in that it is filled between the transparent member.

[Procedure Amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0020

[Correction method] Change

[Correction content]

According to the present invention, the electro-optical panel can be accommodated from the insertion opening regardless of the size of the opening on the counter substrate side or the opening on the element substrate side.

[Procedure Amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0021

[Correction method] Change

[Correction content]

In the electro-optical device according to the fourth aspect of the present invention, the first substrate and the second substrate are joined together, and the edge of the second substrate extends from the edge of the first substrate, and the first substrate. A side opening, a second board side opening, a case body having an insertion opening for inserting the electro-optical panel in a direction orthogonal to the first board side opening and the second board side opening, and the case body Between the first board-side opening and the second board-side opening, a positioning section that accommodates the first board and abuts against an edge of the second board is provided. A transparent member is bonded to at least one of the second substrates, and the transparent member is
Between the transparent member and at least one of the first substrate-side opening and the second substrate-side opening of the case body, the light-shielding substance covers the peripheral edge of the protruding transparent member. Is filled with a light shielding material. According to the present invention, the electro-optical panel can be accommodated through the insertion opening regardless of the size of the opening on the counter substrate side or the opening on the element substrate side.

[Procedure Amendment 10]

[Document name to be amended] Statement

[Name of item to be corrected] 0022

[Correction method] Change

[Correction content]

Further, by forming an overhanging portion that overlaps the edge portion of the second substrate in the opening portion of the case body on the second substrate side, the second substrate is guided between the positioning portion and the edge portion. Grooves can be formed. The thickness of the positioning portion of the case body is set to the thickness of the first substrate and the thickness of the first substrate.
By making the width narrower than the sum of the electro-optical panel gap between the substrate and the second substrate, when the transparent member is joined on the first substrate, a gap as an adhesive reservoir between the joint and the inner surface of the case. Can be formed.

[Procedure Amendment 11]

[Document name to be amended] Statement

[Name of item to be corrected] 0023

[Correction method] Change

[Correction content]

Further, according to the present invention, the first substrate and the second substrate are joined, and the electro-optical panel in which the edge of the second substrate extends from the edge of the first substrate, and the opening portion on the first substrate side, A case body having a second board-side opening, an insertion opening for inserting the electro-optical panel in a direction orthogonal to the first board-side opening and the second board-side opening, and the first board of the case body A positioning unit that accommodates the first substrate and abuts against an edge of the second substrate is provided between the side opening and the second substrate-side opening, and at least the first substrate and the second substrate. It is characterized in that a transparent member is bonded to one side, the transparent member projects from the case body, and the light-shielding substance covers the periphery of the projected transparent member. With this configuration, it is possible to prevent outside light from entering from the peripheral edge.

[Procedure Amendment 12]

[Document name to be amended] Statement

[Name of item to be corrected] 0024

[Correction method] Change

[Correction content]

Further, wiring is provided on the edge of the second substrate that abuts the positioning portion, a protective film is formed on the wiring, or the positioning portion of the case body is connected to the corner of the second substrate. The wiring can be protected by forming it at the abutting portion.

[Procedure Amendment 13]

[Document name to be amended] Statement

[Name of item to be corrected] 0025

[Correction method] Change

[Correction content]

Further, the thickness of the positioning portion of the case body is set to the thickness of the first substrate, the thickness of the first substrate and the thickness of the second substrate.
By making the width narrower than the sum of the electro-optical panel gap between the substrates, when the transparent member is joined on the first substrate, a gap as an adhesive reservoir can be formed between the joined portion and the inner surface of the case. it can.

[Procedure Amendment 14]

[Document name to be amended] Statement

[Correction target item name] 0026

[Correction method] Change

[Correction content]

Further, a transparent member is bonded to at least one of the first substrate and the second substrate, and at least a part of the transparent member is made of glass such as glass having various thermal conductivity.
By using a single crystal sapphire having a very high value of 0 to 30 times or more, the heat conductivity of the transparent substrate is improved, the heat dissipation of the electro-optical panel is improved, and the temperature distribution in the panel surface of the electro-optical panel is relaxed. Therefore, it is possible to reduce the deterioration of image quality due to overheating and temperature distribution.
It is possible to suppress an increase in energy consumption, noise, etc. due to the enhancement of the cooling means. Also, the hardness of single crystal sapphire is 2 to 1 in Vickers hardness as compared with various glasses.
Since it is four times as high, the hardness of the outer surface side portion of the transparent substrate can be increased. Therefore, it is possible to prevent the scratches from being formed on the surface of the transparent substrate and the chipping or cracking of the transparent substrate. Further, since single crystal sapphire has a higher refractive index than glass or the like, the defocus effect can be obtained even if the transparent substrate is formed thin.

[Procedure Amendment 15]

[Document name to be amended] Statement

[Name of item to be corrected] 0027

[Correction method] Change

[Correction content]

The transparent member bonded to at least one of the first substrate and the second substrate projects from the case body, and the light-shielding substance covers the peripheral edge of the transparent member so that the transparent member is removed from the peripheral edge. It can prevent light from entering.

[Procedure Amendment 16]

[Document name to be amended] Statement

[Correction target item name] 0028

[Correction method] Change

[Correction content]

Further, an electro-optical panel in which the first substrate and the second substrate are bonded to each other, and the edge of the second substrate extends from the edge of the first substrate, the opening on the first substrate side, and the second substrate. A case body having a side opening and accommodating the electro-optical panel from the second board side opening; and between the first board side opening and the second board side opening of the case body, A positioning unit for accommodating the first substrate and contacting an edge portion of the second substrate, and disposing a light-shielding frame on at least one of the first substrate and the second substrate. A light shielding portion is located in a region corresponding to an edge portion of the second substrate, and at least one of the first substrate side opening portion and the second substrate side opening portion of the case body and the light shielding frame body are provided. It is characterized in that a light-shielding material is filled in between. A light shielding frame is disposed on at least one of the first substrate and the second substrate,
Since the light-shielding portion is located in the region corresponding to the edge portion of the first substrate or the second substrate, the light-shielding portion is arranged on the outer peripheral portion of the electro-optical panel, especially when the transparent member is not provided. It is possible to block light that enters from the outer peripheral portion of the optical panel and prevent malfunction of the electro-optical panel or reduction in contrast due to the entry of light.

[Procedure Amendment 17]

[Document name to be amended] Statement

[Name of item to be corrected] 0029

[Correction method] Change

[Correction content]

In the case body, a step is formed in the opening on the side of the second substrate, and the gap between the positioning part and the step is made wider than the thickness of the second substrate. When the transparent member is joined to the substrate, a gap as an adhesive reservoir can be formed between the joined portion and the inner surface of the case. An electro-optical panel in which a first substrate and a second substrate are joined, an edge of the second substrate extends from an edge of the first substrate, and a transparent member is joined to the first substrate, A case body having a first board-side opening and a second board-side opening, and housing the electro-optical panel from the second board-side opening, the first board-side opening of the case body, and the first board-side opening. A positioning portion that accommodates the first substrate and contacts the edge portion of the second substrate is provided between the two substrate-side openings, and a light-shielding layer is provided on the outer peripheral portion of the transparent member. .

[Procedure 18]

[Document name to be amended] Statement

[Name of item to be corrected] 0030

[Correction method] Change

[Correction content]

It is desirable that the electro-optical device according to each of the above inventions be configured as a projection type display device provided as image forming means. With such a configuration, an electro-optical device having a good heat dissipation property can be provided and a cooling fan and the like can be suppressed, so that power consumption can be reduced and a compact projection display device can be configured.

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 2H088 EA12 EA19 EA68 HA01 MA20                 2H089 HA40 QA06 QA12 TA01 TA13                       TA16 UA05                 5G435 AA12 AA18 BB05 BB12 EE03                       EE13 GG41 HH18 KK02 KK03                       LL08 LL15

Claims (17)

[Claims] 1. A first substrate and a second substrate are bonded together to form the second substrate.
The electro-optical panel has an edge extending from the edge of the first substrate, a first substrate-side opening and a second substrate-side opening, and
A case body for accommodating the electro-optical panel from the board side opening, and the second board for accommodating the first board between the first board side opening and the second board side opening of the case body. An electro-optical device comprising: a positioning portion that abuts an edge portion of the substrate. 2. A first substrate and a second substrate are bonded together to form the second substrate.
An electro-optical panel having a substrate edge extending from the first substrate edge, a first substrate side opening, a second substrate side opening, the first substrate side opening and the second substrate side opening. A case body having an insertion opening for inserting the electro-optical panel in a direction orthogonal to each other, and the first substrate is housed between the first board side opening and the second board side opening of the case body. An electro-optical device comprising: a positioning portion that abuts on an edge portion of the second substrate. 3. An electro-optical panel having a first substrate, a second substrate having an area larger than that of the first substrate, and a transparent member bonded to the first substrate and having an area larger than that of the first substrate. A case body having a board-side opening and a second board-side opening, and an edge portion of the second board between the first board-side opening and the second board-side opening of the case body. An electro-optical device having an overhanging portion sandwiched between the edges of the transparent member. 4. An electro-optical panel having a first substrate, a second substrate, and a transparent member bonded to the first substrate and having a smaller area than the first substrate, an opening on the first substrate side, and a second substrate. A case body having a side opening, and a positioning portion abutting the edge of the first board between the first board side opening and the second board side opening of the case body. Characterized electro-optical device. 5. The electro-optical device according to claim 2, wherein the case body is formed with a projecting portion that overlaps with an edge portion of the second substrate in the second substrate side opening portion. 6. The second substrate according to claim 1, wherein a wiring is provided on the edge portion that abuts the positioning portion, and a protective film is formed on the wiring. The electro-optical device described. 7. The electro-optical device according to claim 1, wherein the positioning portion of the case body is formed at a position where a corner of the second substrate abuts. 8. The electro-optical device according to claim 1, wherein the shape of the opening of the positioning portion of the case body is the same as that of the first substrate of the electro-optical panel. 9. The thickness of the positioning portion of the case body is smaller than the sum of the thickness of the first substrate and the electro-optical panel gap between the first substrate and the second substrate. The electro-optical device according to claim 1. 10. A transparent member is bonded to the first substrate,
10. The electro-optical device according to claim 9, wherein a gap is formed between the periphery of the joint between the first substrate and the transparent member and the inner surface of the case. 11. A transparent member is bonded to at least one of the first substrate and the second substrate, and at least a part of the transparent member is made of single crystal sapphire. The electro-optical device according to claim 1. 12. A transparent member is bonded to at least one of the first substrate and the second substrate, the transparent member protruding from a side surface of the case body, and a light-shielding substance covers the periphery of the protruding transparent member. The electro-optical device according to any one of claims 1 to 4, characterized in that: 13. A light blocking material is filled between at least one of the first substrate side opening and the second substrate side opening of the case body and the electro-optical panel. 5. The electro-optical device according to any one of items 4 to 4. 14. A light-shielding member is disposed on at least one of the first substrate and the second substrate, and the light-shielding member has a light-shielding portion located in a region corresponding to an edge of the first substrate or the second substrate. The electro-optical device according to any one of claims 1 to 4, wherein 15. The case body is characterized in that a step portion is formed in the opening portion on the second substrate side, and a gap between the positioning portion and the step portion is wider than a thickness of the second substrate. The electro-optical device according to claim 1. 16. A transparent member having the same shape as the opening of the step portion is joined to the second substrate, and a gap is provided between the periphery of the joined portion of the second substrate and the transparent member and the inner surface of the case. 16. The electro-optical device according to claim 15, wherein 17. A projection display device comprising the electro-optical device according to claim 1. Description: