JP5332482B2 - Electro-optical device and electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To achieve high-quality display by reducing stray light in an electro-optical device. <P>SOLUTION: The electro-optical device includes: a liquid crystal panel 100 having a first light-shielding film 53 formed in the shape of a frame on the peripheral edge of an image display area 10a on a counter substrate 20, and a second light-shielding film 55 formed corresponding to the first light-shielding film 53, on a dust-protective substrate 122; and a mount case 600 for housing the liquid crystal panel 100 therein. Regarding the mount case 600, the surface portion on the light incident side is at least partially formed of a material whose light reflectivity is lower than those of the first and second light-shielding films 53 and 55. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  For example, an electro-optical device that is used as a light valve of a liquid crystal projector, and an electro-optical panel such as a liquid crystal panel is mounted or accommodated in a mounting case, and a technology of an electronic device such as a liquid crystal projector that includes the electro-optical device Related to the field.

  In this type of electro-optical device, an electro-optical panel such as a liquid crystal panel is mounted or accommodated in a mounting case, and is used as, for example, a light valve of a liquid crystal projector or the like. The mounting case includes, for example, a frame and a plate-like member, and the electro-optical panel is covered in a frame shape from the periphery by the frame and is placed on and accommodated on the plate-like member. For example, according to Patent Documents 1 and 2, the liquid crystal panel is provided with a light shielding plate on each of the light incident side and the light emission side surfaces on which the projection light from the liquid crystal projector enters and exits in the mounting case.

  For example, as disclosed in Patent Documents 1 to 3, in the mounting case, the surface of the light incident side of the frame or plate-like member is formed of a light shielding material. Further, the electro-optical panel is provided with a frame-shaped light-shielding film that defines a region to be an effective screen on the substrate at the periphery of the pixel region where a plurality of pixels are arranged. For example, in a projector, light traveling toward a region outside the effective screen of the projection light, that is, the periphery of the pixel region of the electro-optical panel is a surface portion on the light incident side of the mounting case, and a light shielding film in the electro-optical panel Is shielded from light.

  Further, in a liquid crystal panel which is an example of an electro-optical panel, when the liquid crystal panel is used as a light valve in a liquid crystal projector, the surface of the light valve is prevented so that an image of dust is not reflected in an image projected and enlarged on the screen. In many cases, a dustproof substrate is provided to prevent adhesion of dust, dust, etc. (hereinafter simply referred to as “dust”).

Japanese Patent No. 3583062 JP 2002-196694 A JP 2007-199279 A

  In the mounting case as described above, in particular, the surface portion on the light incident side may be formed of a material having a relatively high light reflectance in order to improve the light shielding property. In this case, when the light incident on the light incident side surface portion of the mounting case is reflected, the light reflected on the support member of the polarizing plate disposed outside the electro-optical device on the light incident side proceeds. However, the re-reflection causes a situation in which the pixel region proceeds as stray light. Therefore, the display quality may be deteriorated by such a large amount of stray light being mixed into the light that displays the effective screen emitted from the pixel region.

  The present invention has been made in view of the above-described problems, for example, an electro-optical device capable of performing high-quality display by reducing stray light, and a liquid crystal projector including such an electro-optical device. It is an object to provide an electronic device.

In order to solve the above problems, an electro-optical device according to the present invention includes a pair of substrates that sandwich an electro-optical material, and at least one of the pair of substrates that is provided on the opposite side of the electro-optical material. A substrate, a first light-shielding film provided on at least one of the pair of substrates and formed in a frame shape on a periphery of a pixel region in which a plurality of pixels are disposed, and the first light-shielding film on the other substrate An electro-optical panel having a second light-shielding film formed in a frame shape along the outer periphery of the one light-shielding film , a frame accommodating the electro-optical panel, and mounted on the light incident side of the frame, A mounting case having a window provided corresponding to the pixel region and having a cover member provided so as to overlap the second light-shielding film, and at least a surface on the light incident side of the cover member is , than the first and second light-blocking film Rutotomoni formed by a material having a low light reflectivity is formed by a material having high light reflectivity than the frame.

  According to the electro-optical device of the present invention, for example, an electro-optical panel such as a liquid crystal panel is accommodated in the mounting case. As an example, in a liquid crystal panel as an electro-optical panel, light is modulated in a liquid crystal that is an electro-optical material sandwiched between a pair of substrates in accordance with a voltage level applied in units of each pixel in a pixel region. When a liquid crystal device as an electro-optical device having such a liquid crystal panel is used as, for example, a light valve of a liquid crystal projector, projection light is supplied from a light source and incident on the liquid crystal panel, and light modulated in the liquid crystal is used as display light. Display is performed by being emitted.

  A frame-shaped first light-shielding film is formed on the periphery of the pixel region on at least one of the pair of substrates. The first light-shielding film defines an effective screen area displayed by light emitted from the pixel area. For example, on the other substrate which is a dustproof substrate, a second light shielding film is formed in a frame-like pattern corresponding to the first light shielding film. Therefore, for example, in the projector, the projection light can enter the pixel region in the electro-optical panel, and the light traveling toward the periphery outside the pixel region is shielded by the first and second light shielding films.

  Light enters the pixel area of the electro-optical panel from the window of the mounting case, but the light traveling toward the outside of the pixel area is also blocked by the surface portion on the light incident side of the mounting case. In the electro-optical device of the present invention, the surface portion on the light incident side in the mounting case is at least partially formed of a material having a light reflectance lower than that of the first and second light shielding films. In other words, the surface portion on the light incident side of the mounting case that faces the light incident side of the electro-optical device of the present invention more widely than the first and second light-shielding films is at least partially the first. It is formed so that light is less likely to be reflected than the first and second light shielding films. Therefore, it is possible to suppress reflection of light that travels toward the periphery outside the pixel region and does not contribute to display on the surface portion on the light incident side of the mounting case. Therefore, the light reflected by the surface portion on the light incident side of the mounting case is re-reflected by a member (for example, a support member for the polarizing plate) disposed on the light incident side outside the electro-optical device, and stray light is generated. Can be suppressed. As a result, it is possible to more effectively prevent a large amount of stray light from being mixed into the display light emitted from the pixel region.

  Here, for example, in a projector, the projection light is projected with powerful light that is reduced so that the amount of light increases toward the center of the pixel region. That is, in this case, in the electro-optical device, light that increases in amount as it goes toward the center of the pixel region is incident. Therefore, the amount of light incident on the electro-optical device is larger near the edge of the pixel region than outside the pixel region. Accordingly, if the reflectance of the surface portion on the light incident side of the mounting case is lowered, the light shielding performance of the electro-optical device against strong light traveling near the edge of the pixel region may be deteriorated.

  In the electro-optical device of the present invention, the light reflectance of the surface of the mounting case on the light incident side is reduced by forming the first and second light shielding films so that the light reflectance is relatively high. Even if the light shielding performance is deteriorated, the strong light traveling near the edge of the pixel region can be reflected by the first and second light shielding films and more reliably shielded. Accordingly, it is possible to more reliably prevent the temperature in the electro-optical panel from being significantly increased by the incident of powerful light traveling near the edge of the pixel region, and thus the display quality of the electro-optical device to be deteriorated. Can do.

  Therefore, the electro-optical device according to the present invention can improve display quality and perform high-quality display.

  In an aspect of the electro-optical device according to the aspect of the invention, the second light shielding film may be located at least partially on the outer peripheral side with respect to the pixel region with respect to the first light shielding film on the other substrate. It is formed.

  In this aspect, in the electro-optical panel, the second light-shielding film partially overlaps the first light-shielding film, and the other part is disposed on the outer peripheral side with respect to the pixel region than the first light-shielding film. Therefore, the light traveling toward the outside of the pixel region with respect to the electro-optical panel can be shielded by a first and second light shielding film in a wider region while preventing light leakage from occurring in the overlapping portion. It becomes possible. Therefore, the powerful light traveling near the edge of the pixel region can be more reliably shielded by the first and second light shielding films.

In another aspect of the electro-optical device according to the aspect of the invention, the mounting case includes a frame having an opening that surrounds the electro-optical panel from a peripheral edge side thereof, and the light with respect to the frame so as to cover the opening. A first cover member mounted on the incident side and having a first window corresponding to the pixel region; and a light emitting side opposite to the light incident side with respect to the frame so as to cover the opening. And a second cover member having a second window portion corresponding to the pixel region, and at least one of the first cover member and the frame has at least a partial surface on the light incident side. Further, it is formed of a material having a light reflectance lower than that of the first and second light shielding films.

  In this aspect, the frame has an opening that defines an opening for accommodating the electro-optical panel. In the mounting case, the electro-optic panel is surrounded by the opening of the frame from the peripheral edge side and is accommodated in the opening. Each of the first and second cover members is attached to each of the light incident / exit sides with respect to the frame so as to cover the opening formed by the opening. In the first and second cover members, the first and second window parts allow the light contributing to display such as projection light to enter and exit the pixel region, respectively. Each of the windows is defined.

  In this aspect, in at least one of the frame and the first cover member, the surface portion facing the light incident side is at least partially made of a material having a lower light reflectivity than the first and second light shielding films. It is formed. Therefore, in the surface portion on the light incident side of the mounting case, at least one surface portion of the frame and the first cover member is at least partially less likely to reflect light than the first and second light shielding films. Can be formed. Therefore, it is possible to suppress the generation of stray light caused by the light reflected by the surface portion on the light incident side of the mounting case.

  In this aspect, the light reflectance of the first cover member can be adjusted separately from the frame. Therefore, by adjusting the light reflectance, the first cover member can be adjusted so that light is easily reflected separately from the frame, and vice versa. Here, since the surface portion on the light incident side of the first cover member faces wider than the frame, it is preferable to form the first cover member so that the reflectance of light is higher than that of the frame. Accordingly, in the surface portion on the light incident side in the mounting case, the first cover member that faces the light incident side of the electro-optical device more widely proceeds toward the periphery outside the pixel region and does not contribute to display. More light can be reflected.

  In the aspect in which the first and second cover members are attached to the frame of the mounting case, the first window portion is a part of the pixel region with respect to the first and second light shielding films. Alternatively, it may be configured so as to be positioned on the outer peripheral side.

  If comprised in this way, each of the 1st and 2nd light shielding film will be arrange | positioned partially inside it rather than the 1st window part of a 1st cover member. The surface portion on the light incident side of the first window portion is preferably formed of a material having a light reflectance lower than that of the first and second light shielding films as described above. Therefore, by reflecting the light traveling in the vicinity of the edge of the pixel region at each portion of the first and second light shielding films that do not overlap with the first window portion in which the light reflection performance is thus reduced, The light can be shielded more reliably. In addition, the light traveling near the edge of the pixel region is reflected by the first and second light-shielding films, thereby approximating the path of light traveling from outside the electro-optical device such as projection light to the pixel region. However, it is possible to proceed in the direction going back to the light source side. Therefore, it is possible to suppress the generation of stray light caused by the light traveling near the edge of the pixel region being reflected by the first and second light shielding films.

  On the other hand, by arranging the first window part so as to partially overlap each of the first and second light shielding films, the light traveling toward the outside of the pixel region with respect to the electro-optical panel is reduced. With the first and second light shielding films in addition to the one window portion, it is possible to shield light in a wider area while preventing light leakage from occurring in the overlapping portions.

  As already described here, each portion of the first and second light-shielding films with respect to the projection light and the like projected with powerful light that has been reduced so that the amount of light increases toward the center of the pixel region. Thus, strong light traveling near the edge of the pixel region is reflected, and light traveling toward the outside of the pixel region and having a smaller amount of light is reflected by the first window portion. Accordingly, it is possible to more reliably suppress the generation of stray light due to the reflection of light in the mounting case while suppressing the temperature rise in the electro-optical panel.

Alternatively, in the aspect in which the first and second cover members are attached to the frame of the mounting case, the light incident side surface of the first cover member reflects light more than the frame at least partially. You may comprise so that it may form with the material from which a rate becomes high.

  According to this configuration, as already described, the surface portion on the light incident side in the mounting case has a wider area outside the pixel region in the first cover member that faces the light incident side of the electro-optical device more widely. More light that travels toward the periphery and does not contribute to display can be reflected. Accordingly, it is possible to more effectively suppress a temperature rise in the electro-optical panel due to more light entering the electro-optical panel.

In another aspect of the electro-optical device according to the aspect of the invention, the mounting case includes a window that includes the window portion and surrounds the electro-optical panel from a peripheral portion side thereof, and the light incident side surface of the frame is At least partially, it is formed of a material having a light reflectance lower than that of the first and second light shielding films.

  In this aspect, in the mounting case, the electro-optical panel is enclosed and accommodated in the frame from the peripheral edge side. In the frame, a window that allows light to enter the pixel region is defined by the window portion.

  In this aspect, the surface portion on the light incident side of the frame is at least partially formed of a material having a light reflectance lower than that of the first and second light shielding films. Accordingly, the surface portion of the mounting case on the light incident side can be formed such that the surface portion of the frame is at least partially less likely to reflect light than the first and second light shielding films. Therefore, it is possible to suppress the generation of stray light caused by the light reflected by the surface portion on the light incident side of the mounting case.

  In an aspect in which the mounting case includes a frame, the window portion is formed so as to be partially positioned on the outer peripheral side with respect to the pixel region with respect to the first and second light shielding films. Also good.

  If comprised in this way, each of the 1st and 2nd light shielding film will be arrange | positioned inside rather than it rather than the window part of a flame | frame. As described above, the surface portion on the light incident side of the window portion of the frame is preferably formed of a material having a light reflectance lower than that of the first and second light shielding films. Therefore, by reflecting the light traveling near the edge of the pixel region at each portion of the first and second light shielding films that do not overlap with the window portion in which the light reflection performance is reduced in this way, It is possible to more reliably block light while suppressing generation of stray light due to reflection.

  On the other hand, by arranging the window portion of the frame so as to partially overlap each of the first and second light shielding films, the light traveling toward the outside of the pixel region with respect to the electro-optical panel can be reduced. In addition to the window portion, the first and second light shielding films allow light to be shielded in a wider area while preventing light leakage from occurring in the overlapping portions.

  Here, with respect to the projection light or the like projected with powerful light that is reduced so that the amount of light increases toward the center of the pixel region, the portions of the pixel region Powerful light traveling near the edge is reflected, and light traveling toward the outside of the pixel region and having a smaller amount of light is reflected by the window portion of the frame. Accordingly, it is possible to more reliably suppress the generation of stray light due to the reflection of light in the mounting case while suppressing the temperature rise in the electro-optical panel.

  In another aspect of the electro-optical device of the present invention, the other substrate is provided as a dust-proof substrate for preventing dust from being visually recognized during display by the electro-optical device.

  In this aspect, by providing another substrate as a dustproof substrate in the electro-optical panel, dust such as dust and dust attached to the pixel region on at least one surface of the pair of substrates is displayed on the effective screen by the defocusing action. Even if it is reflected, it is displayed in a defocused state and can be clearly prevented from being visually recognized. Therefore, high-quality display can be performed more reliably in the electro-optical device.

  In order to solve the above problems, an electronic apparatus according to the present invention includes the above-described electro-optical device according to the present invention (including various aspects thereof).

  According to the electronic apparatus of the present invention, a projection display device capable of performing high-quality display, a television, a mobile phone, an electronic notebook, a word processor, a viewfinder type or a monitor direct view type video tape recorder, a workstation, Various electronic devices such as a video phone, a POS terminal, and a touch panel can be realized. Further, as the electronic apparatus of the present invention, for example, an electrophoretic device such as electronic paper can be realized.

  The operation and other advantages of the present invention will become apparent from the best mode for carrying out the invention described below.

  Hereinafter, embodiments of the electro-optical device according to the invention will be described with reference to the drawings. In the following embodiments, a TFT (Thin Film Transistor) active matrix driving type liquid crystal device is taken as an example of the electro-optical device of the present invention.

<First Embodiment>
A first embodiment of the present invention will be described. First, a liquid crystal projector (hereinafter also simply referred to as “projector”), which is an example of an electronic apparatus, to which the liquid crystal device is applied as a light valve will be described. FIG. 1 is a plan view showing a configuration example of the projector.

  In FIG. 1, a projector 1100 is constructed as a multi-plate type color projector using three liquid crystal light valves 1100R, 1100G, and 1100B for RGB.

  As shown in FIG. 1, a projector 1100 includes a lamp unit 1102 made of a white light source such as a halogen lamp. The projection light emitted from the lamp unit 1102 is separated into three primary colors of RGB by four mirrors 1106 and two dichroic mirrors 1108 arranged in the light guide 1104, and light valves 1110R corresponding to the respective primary colors. Incident on 1110B and 1110G.

  The liquid crystal devices constituting the light valves 1110R, 1110B and 1110G are respectively driven by R, G and B primary color signals supplied from the image signal processing circuit (details will be described later). The light modulated by these liquid crystal devices enters the dichroic prism 1112 from three directions. In the dichroic prism 1112, R and B light is refracted at 90 degrees, while G light travels straight. Therefore, as a result of the synthesis of the images of the respective colors, a color image is projected onto the screen or the like via the projection lens 1114.

  Although not shown in FIG. 1, in order to suppress an excessive temperature rise of the light valves 1110R, 1110B and 1110G due to relatively strong projection light, means for supplying cooling air, for example, a sirocco fan Etc. are also provided.

  Next, the overall configuration of the liquid crystal device according to the present embodiment will be described with reference to FIGS. In the following drawings, each layer / member may be shown in a different scale for each layer / member so that each layer / member can be recognized on the drawing.

  First, the configuration of the liquid crystal panel provided in the liquid crystal device will be described with reference to FIGS. FIG. 2 is a plan view showing the entire configuration of the liquid crystal panel according to this embodiment, and FIG. 3 is a cross-sectional view taken along the line HH ′ of FIG.

  2 and 3, in the liquid crystal panel 100 according to the present embodiment, the TFT array substrate 10 and the counter substrate 20 are disposed to face each other. A liquid crystal layer 50 is sealed between the TFT array substrate 10 and the counter substrate 20, and the TFT array substrate 10 and the counter substrate 20 are surrounded by an image display region 10a as an example of the “pixel region” according to the present invention. They are bonded to each other by a sealing material 52 provided in a sealing region located in the area. The sealing material 52 is made of an ultraviolet curable resin for bonding the two substrates, and is applied on the TFT array substrate 10 in the manufacturing process and then cured by ultraviolet irradiation. Further, a gap material (not shown) such as glass fiber or glass bead for spraying a predetermined value for the distance between the TFT array substrate 10 and the counter substrate 20 (inter-substrate gap) is scattered in the sealing material 52. Yes.

  In FIG. 2, a light-shielding frame light-shielding film 53 that defines the frame area of the image display region 10 a is provided on the counter substrate 20 side in parallel with the inside of the seal region where the seal material 52 is disposed. In the peripheral region, an external circuit connection terminal 102 including an image signal terminal to which an image signal is supplied is provided along one side of the TFT array substrate 10 in a region located outside the seal region where the sealing material 52 is disposed. It has been. The sampling circuit 7 is provided so as to be covered with the frame light shielding film 53 on the inner side of the seal region along the one side. Further, the scanning line driving circuit 104 is provided so as to be covered with the frame light-shielding film 53 inside the seal region along two sides adjacent to the one side. On the TFT array substrate 10, vertical conduction terminals 106 for connecting the two substrates with the vertical conduction material 107 are arranged in regions facing the four corner portions of the counter substrate 20. Thus, electrical conduction can be established between the TFT array substrate 10 and the counter substrate 20.

  On the TFT array substrate 10, a lead wiring 90 is formed for electrically connecting the external circuit connection terminal 102 to the sampling circuit 7, the scanning line driving circuit 104, the vertical conduction terminal 106, and the like.

  In FIG. 3, on the TFT array substrate 10, a laminated structure in which wirings such as pixel switching TFTs as scanning elements, scanning lines, and data lines are formed is formed. Although a detailed description of the laminated structure is omitted, the pixel electrode 9a is provided in the image display region 10a in the upper layer of wiring such as a pixel switching TFT, a scanning line, and a data line. The pixel electrode 9a is typically formed in an island shape with a predetermined pattern for each pixel by a transparent material such as ITO (Indium Tin Oxide).

  An alignment film (not shown) is formed on the pixel electrode 9a. On the other hand, a light shielding film 23 is formed on the surface of the counter substrate 20 facing the TFT array substrate 10. A counter electrode 21 made of a transparent material such as ITO is formed on the light shielding film 23 so as to face the plurality of pixel electrodes 9a. An alignment film (not shown) is formed on the counter electrode 21. Further, the liquid crystal layer 50 is made of, for example, a liquid crystal in which one or several types of nematic liquid crystals are mixed, and takes a predetermined alignment state between the pair of alignment films.

  When the liquid crystal panel 100 is driven, an image signal is supplied to the pixel electrode 9a for each pixel, and is held between the counter electrode 21 for a certain period. The liquid crystal that constitutes the liquid crystal layer 50 in accordance with the voltage level applied in this manner modulates light and enables gradation display by changing the orientation and order of the molecular assembly. In the normally white mode, the transmittance for incident light is reduced according to the voltage applied in units of each pixel, and in the normally black mode, the light is incident according to the voltage applied in units of each pixel. The light transmittance is increased, and light having a contrast corresponding to the image signal is emitted in the image display area 10a as a whole. Although not described in detail, each pixel is driven by supplying various signals such as an image signal to the data line and the scanning line, and the pixel electrode 9a is switching-controlled by a pixel switching TFT.

  In FIG. 3, dust-proof substrates 121 and 122 configured using a transparent substrate such as glass are provided on the side of the TFT array substrate 10 and the counter substrate 20 that do not face the liquid crystal layer 50. Due to the defocusing action of the dustproof substrates 121 and 122, the dust and dirt attached to the outer surfaces of the TFT array substrate 10 and the counter substrate 20, that is, the adhesive surfaces to be bonded to the dustproof substrates 121 and 122, 1 is displayed in a defocused state on the display screen as described with reference to FIG. Therefore, it is possible to prevent the above-described dust and dust from being clearly reflected on the display screen on the screen. In addition to the dustproof substrates 121 and 122, the liquid crystal panel 100 may be provided with an optical element such as an antireflection plate (not shown).

  Although not shown here, on the TFT array substrate 10, in addition to the sampling circuit 7 and the scanning line drive circuit 104, an inspection circuit for inspecting the quality, defects, etc. of the liquid crystal device during manufacturing or at the time of shipment, A pattern for use may be formed.

  The liquid crystal device according to the present embodiment includes the liquid crystal panel 100 as described above housed in a mounting case. Hereinafter, the configuration of the liquid crystal device will be described with reference to FIGS.

  4 is a plan view of the liquid crystal device as viewed from the light incident side, and FIG. 5 is a plan view of the liquid crystal device as viewed from the light output side. FIG. 6 is a side view of the liquid crystal device as viewed from the side of the mounting case. FIG. 7 is an exploded side view of the liquid crystal device shown in FIG.

  In the liquid crystal device, a mounting case 600 that accommodates the liquid crystal panel 100 includes a frame 610, a first hook 620, and a second hook 630. The first hook 620 is an example of the “first cover member” according to the present invention, and the second hook 630 is an example of the “second cover member” according to the present invention. The frame 610 is made of metal such as aluminum by die casting (die casting), for example. The first hook 620 and the second hook 630 are each formed from a metal such as aluminum or stainless steel by, for example, pressing.

  5 to 7, the circuit portion relating to the image signal supply including the data line driving circuit and the image signal supply circuit for supplying the liquid crystal panel 100 with the image signal to each pixel via the sampling circuit 7 is preferably provided. It is built in a driving IC (Integrated Circuit) chip 300. Alternatively, a part of the circuit related to image signal supply may be built in the driving IC chip 300 and the other part may be built in the TFT array substrate 10.

  8 is a cross-sectional view showing a configuration of a cross-sectional portion of the liquid crystal device taken along line A0-A0 ′ shown in FIG. 4, and FIG. 10 is a cross-sectional portion of the liquid crystal device taken along line B0-B0 ′ shown in FIG. It is sectional drawing which shows this structure.

  In FIG. 8, the liquid crystal panel 100 is electrically connected to the driving IC chip 300 via the wiring substrate 200 at the external circuit connection terminals 102. The driving IC chip 300 is fixed to the wiring substrate 200 by, for example, TAB (Tape Automated Bonding) technology. In the driving IC chip 300, various circuits for supplying various signals including image signals to the liquid crystal panel 100 are built. That is, the display operation described with reference to FIGS. 2 and 3 is performed by driving the liquid crystal panel 100 by the driving IC chip 300 in addition to the scanning line driving circuit 104 and the sampling circuit 7 on the TFT array substrate 10. Made.

  Each configuration of the frame 610, the first hook 620, and the second hook 630 in the mounting case 600 will be described in more detail. In the present embodiment, in the projector 1100 described with reference to FIG. 1, the projection light enters from the first hook 620 side, passes through the image display region 10 a of the liquid crystal panel 100, and then the second hook. It is assumed that the light is emitted from the 630 side. That is, in FIG. 1, it is not the first hook 620 but the second hook 630 that faces the dichroic prism 1112.

  As shown in FIG. 8 or FIG. 10, the members constituting the frame 610 are in a state of being hollowed out to accommodate the liquid crystal panel 100, and the opening 615 defines the opening. In the frame 610, the liquid crystal panel 100 is surrounded by the opening 615 from the peripheral edge side, and is accommodated in the opening.

  FIG. 11 is an exploded cross-sectional view of the liquid crystal device shown in FIG. 10 disassembled for each major component of the mounting case. In FIG. 10, a first hook 620 and a second hook 630 that can function as a lid are attached to a frame 610 having a shape like a box without a lid as described above. That is, the opening defined by the opening 615 in the frame 610 is in a closed state when the first hook 620 and the second hook 630 are attached from opposite sides.

  The first hook 620 is a plate-like member and covers the opening 615 so as to face one surface of the liquid crystal panel 100 in the mounting case 600 as shown in FIG. 4, FIG. 6, FIG. 7, or FIG. Is attached to the frame 610. In this state, the liquid crystal panel 100 is accommodated in the frame 610 in such a state that it is placed on the first hook 620.

  The first hook 620 has a first window portion 625 that defines a first window 625h, which is a part of which a member constituting the first hook 620 is formed in an opening shape. In a state where the first hook 620 is attached to the frame 610, the first window portion 625 preferably contacts the liquid crystal panel 100 directly. The first window 625 defines a first window 625h corresponding to the image display area 10a of the liquid crystal panel 100, and the projection light emitted from the projector 1100 shown in FIG. 1 is emitted from the first window 625h. The light enters the image display area 10 a of the liquid crystal panel 100. That is, the first window portion 625 brings the peripheral region located around the image display region 10a of the liquid crystal panel 100 into contact. Since the liquid crystal panel 100 and the edge of the first window portion 625 are in contact with each other, heat transfer from the former to the latter can be performed without delay.

  The second hook 630 covers the opening 615 so as to face the other surface of the liquid crystal panel 100 from the side opposite to the first hook 620 as shown in FIG. 5, FIG. 6, FIG. 7 or FIG. Is attached to the frame 610. In this embodiment, in FIG. 11, the second hook 630 has a spring portion 630 a that generates elasticity when attached to the frame 610. The spring portion 630a is formed by bending a part of the second hook 630 made of, for example, a metal material, and has elasticity based on the bent shape.

  In FIG. 11, when assembling the mounting case 600 at the time of manufacturing the liquid crystal device, for example, after the first hook 620 is attached to the frame 610, the liquid crystal panel 100 is accommodated in the frame 610 and the opening 615. The adhesive 640 is bonded from the peripheral edge side. Thereafter, the second hook 630 is attached to the frame 610. When the second hook 630 is attached to the frame 610, elasticity is generated in the spring portion 630a, and the liquid crystal panel 100 accommodated in the frame 610 is opposite to the side on which the second hook 630 is attached. A force is applied in the direction pushed toward. Therefore, the liquid crystal panel 100 can be pressed against the first hook 620 and accommodated in the frame 610 by the elastic force generated in the spring portion 630a. Therefore, for example, as compared with the configuration of Patent Document 1 described above, the liquid crystal panel 100 is more effectively prevented from being separated from the first hook 620 and housed in the frame 610. Can do.

  Like the first hook 620, the second hook 630 has a second window 635 that defines a second window 635h, and the second window 635 preferably abuts against the liquid crystal panel 100. . In the projector 1100 shown in FIG. 1, the projection light transmitted through the image display area 10 a of the liquid crystal panel 100 is emitted from the second window 635 h at the second hook 630. Also on the second hook 630 side, similar to the first hook 620, the liquid crystal panel 100 and the edge of the second window portion 635 are in contact with each other, so that heat is transferred from the former to the latter. Will be performed without delay.

  FIG. 12 is a cross-sectional view showing a configuration of a cross-sectional portion corresponding to FIG. 10 for a liquid crystal device of a comparative example with respect to the present embodiment. The comparative example will be described by paying attention only to the configuration different from the present embodiment, and description of other configurations will be omitted.

  In the comparative example shown in FIG. 12, a window portion 715 that abuts the peripheral region on one surface of the liquid crystal panel 100 is formed by a part of the members constituting the frame 610. By attaching the hook 630 to the frame 610, the side of the frame 610 facing the window 715 is closed. Therefore, in the comparative example, the projection light emitted from the projector 1100 shown in FIG. 1 enters the image display area 10 a of the liquid crystal panel 100 through the window 715 h defined by the window portion 715.

  In this case, it is difficult in manufacturing to reduce only the thickness d1 of the window portion 715 to a predetermined value in the members constituting the frame 610. As a result, a step generated between the surface of the window 715 and the surface of the liquid crystal panel 100 may be increased.

  On the other hand, in this embodiment, in FIG. 10, members constituting the first hook 620 can be adjusted separately from the frame 610. For example, when the liquid crystal device is manufactured, it is possible to easily adjust the thickness of the member by pressing the member constituting the first hook 620. Thereby, the thickness d0 of the first window portion 625 can be easily reduced to a predetermined value. Specifically, for example, the thickness d1 of the window portion 715 in FIG. 12 is about 0.4 to 0.7 mm, whereas the thickness d0 of the first window portion 625 is 0.1 to 0.2 mm in FIG. It becomes possible to make it as thin as possible. Therefore, the thickness of the mounting case 600 can be prevented from becoming large, the liquid crystal device can be miniaturized, and the projector 1100 shown in FIG. 1 can be miniaturized.

  The first hook 620 is formed of a metal material such as stainless steel so that it can be pressed more easily, and the reflectance can be higher than the surface of the opening 615 of the frame 610. It becomes. As a result, the light traveling toward the peripheral region of the liquid crystal panel 100 is reflected on the first hook 620, and a significant temperature increase of the liquid crystal device can be suppressed.

  FIG. 9 is an explanatory diagram for explaining the flow of cooling air supplied in the projector, for example, in the cross section shown in FIG. In FIG. 9, an example of the flow of cooling air to the liquid crystal device is schematically shown by dotted arrows. Therefore, the actual cooling air flow may differ in detail from the dotted arrow shown in FIG. As already described, cooling air is supplied to the liquid crystal devices constituting the light valves 1100R, 1100G, or 1100B by means such as a sirocco fan in the projector 1100. This cooling air flows roughly along the surface of the mounting case 600 along the dotted arrow in FIG.

  In the present embodiment, in FIG. 10, the first window 625 of the first hook 620 is thinned to a predetermined value, so that the surface of the liquid crystal panel 100 and the surface of the liquid crystal panel 100 are reduced due to the thickness d0 of the first window 625. It is possible to more easily prevent the level difference from the surface from becoming large. In addition, since the first hook 620 and the liquid crystal panel 100 are separated from each other in the mounting case 600, the step between the surface of the first window 625 and the liquid crystal panel 100 is further increased. It can be surely prevented. Therefore, in FIG. 9, it is possible to efficiently flow from the first window 625h to the surface of the liquid crystal panel 100 on the first hook 620 side. In addition, by reliably bringing the liquid crystal panel 100 into contact with the first hook 620, heat conduction from the liquid crystal panel 100 to the first hook 620 can be performed more efficiently. Furthermore, the first hook 620 can more effectively prevent dust and dirt from accumulating on the edge of the first window 625 due to a step between the first window 625 and the liquid crystal panel 100. You can also.

  In the present embodiment, as described with reference to FIG. 10, in order to easily set the thickness d0 of the first window portion 625 to a predetermined value, the thickness of the members constituting the first hook 620 is reduced. Moreover, there is a possibility that the strength of the first hook 620 may be reduced by forming it with a material that can be easily pressed. As a result, a relatively strong force is applied to the first hook 620, so that the distortion of the first hook 620 and the force is applied to the liquid crystal panel 100 accommodated in the mounting case 600 via the first hook 620. Defects such as breakage may occur. In order to prevent such an adverse effect, each part of the mounting case 600 of the present embodiment preferably has the following characteristic configuration.

  In FIG. 4, projections 613 are provided at four locations corresponding to the attachment holes 616 of the frame 610 in the frame 610. Note that the mounting hole 616 is defined by members constituting the frame 610, and is used when the liquid crystal device is mounted as the light valve 1100R, 1100G, or 1100B in the projector 1100 shown in FIG.

  As shown in FIG. 4, FIG. 6, or FIG. 7, the protrusion 613 is provided on the side where the first hook 620 is mounted, and protrudes from the surface of the first hook 620 as well shown in FIG. It is formed at a height. In the mounting case 600, when the first hook 620 is attached to the frame 610, the first hook 620 side is used as the installation surface (that is, the side where the protrusion 613 is provided in FIG. 6 is the upper side). The mounting case 600 is shown as being installed, but on the opposite side, the mounting case 600 is installed with the side on which the protrusion 613 is provided facing down), from the surface of the first hook 620. The projecting portion 613 can receive a force generated by the installation. Therefore, a situation in which a relatively strong force is applied to the liquid crystal panel 100 accommodated in the frame 610 via the first hook 620 and the first hook 620 by such installation is avoided. It becomes possible.

  Alternatively, when the mounting case 600 is assembled at the time of manufacturing the liquid crystal device as described with reference to FIG. 11, the first hook 620 side is used as an installation surface in a state where the first hook 620 is attached to the frame 610. (That is, in the case where the liquid crystal panel 100 is installed and the second hook 630 is attached to the frame 610 in the case where the liquid crystal panel 100 is installed) In each step, the force applied to the first hook 620 can be reduced by receiving the force at the protrusion 613 as described above. As a result, the manufacturing process yield can be improved.

  In the present embodiment, the protrusions 613 arranged at four locations in FIG. 4 may be formed so as to serve as at least one of a heat radiating fin and a wind guide plate. Or it is not limited to the structure shown in FIG. 4, For example, you may make it provide the projection part 613 in three places among four places, and may provide the fin or wind guide plate for heat radiation in one place. If the projecting portion 613 is configured to serve as at least one of the heat-dissipating fin and the air guide plate, it is necessary for these as compared with the case where the projecting portion 613 and the heat-dissipating fin and the air guide plate are provided separately. By reducing the arrangement area of the frame 610, the frame 610 can be easily downsized. Therefore, the mounting case 600 can also be reduced in size, which can contribute to the downsizing of the liquid crystal device. By providing the fins for heat dissipation, the area of the surface that contacts the cooling air of the frame 610 in FIG. 9 increases and the cooling air can be efficiently flowed. Further, in the case of providing a wind guide plate, it is shown that the cooling air flows in the flow of the cooling air in FIG. 9, that is, in the same figure, the cooling air flows from right to left. By providing the cooling air, the cooling air can efficiently flow into the surface of the liquid crystal panel 100 from the first window 625h. Therefore, the heat radiation from the frame 610 can be efficiently performed by providing the heat radiation fins and the air guide plate.

  Here, as shown in FIGS. 4, 6, 8, etc., in the frame 610, a part of the members constituting the first hook 620 is extended along the wiring board 200 on the side where the first hook 620 is attached. A heat radiating portion 611 is provided. In FIG. 6 or FIG. 8, the heat radiating portion 611 is provided so that heat can be conducted from the driving IC chip 300 on the wiring substrate 200. As a result, the heat from the driving IC chip 300 can be efficiently dissipated outside the liquid crystal device in the heat radiating unit 611.

  As shown in FIG. 4, FIG. 6, or FIG. 8, the first hook 620 has a bent portion 621 formed by bending an edge portion of a member constituting the first hook 620. FIG. 13 is an enlarged schematic diagram showing an enlarged portion surrounded by a dotted line A1 in FIG. 4, and FIG. 15 is an enlarged schematic diagram showing an enlarged portion surrounded by a dotted line A2 in FIG. It is. As well shown in FIG. 15, the bent portion 621 is bent along the surface shape of the opening 615 that comes into contact with the first hook 620 attached to the frame 610. Therefore, the first hook 620 and the wall portion of the opening 615 can be aligned without a gap. Therefore, since such a gap is generated, it is possible to prevent the liquid crystal panel 100 from being separated from the first hook 620. Therefore, the step between the surface of the first window portion 625 of the first hook 620 and the liquid crystal panel 100 is prevented from increasing, and the cooling air flows into the liquid crystal panel 100 from the first window 625h. It can be made efficient.

  Further, when the thickness of the member of the first hook 620 is reduced in order to adjust the thickness of the first window portion 625, the strength from the second hook 630 is reduced in the mounting case 600 when the strength deteriorates. As a result, the liquid crystal panel 100 is pressed and a force is applied to the first hook 620, which may cause distortion of the first hook 620. By fitting the first hook 620 to the wall portion of the opening 615 of the frame 610 with no gap by the bent portion 621 and pressing it against the frame 610, the first hook 620 is distorted by the applied force. Can be prevented more effectively.

  In FIG. 4 or FIG. 13, the bent portion 621 has a concave portion 622 formed by partially cutting out the bent portion 621. FIG. 14 is an explanatory diagram for explaining that the first hook is manufactured using a progressive-type manufacturing apparatus. As shown in FIG. 14, when the first hook 620 is mass-produced using a progressive-type manufacturing apparatus, a plurality of first hooks 620 are recessed by providing recesses 622 in a part of the bent portion 621. In 622, they are connected to each other and can be manufactured easily.

  4 or 13, the frame 610 is provided with a protrusion 613 corresponding to the recess 622. In the first hook 620, the strength of the concave portion 622 in which the bent portion 621 is missing may be deteriorated with respect to the force applied to the liquid crystal panel 100 due to the elastic force from the second hook 630, for example. By disposing the projections 613 corresponding to the recesses 622, the strength of the recesses 622 can be reinforced. Accordingly, it is possible to prevent the first hook 620 from being distorted in the recess 622 due to the force applied by the liquid crystal panel 100 being pressed by the elastic force from the second hook 630. Further, as shown in FIG. 13, the protrusion 613 can be formed by entering into the recess 622, so that a larger arrangement area can be secured. In addition, in the frame 610, compared with the case where the member for reinforcing the concave portion 622 as described above is provided separately from the protrusion 613, the arrangement area required for the frame 610 is reduced, and the frame 610 can be easily made. It is possible to reduce the size. As a configuration for reinforcing the concave portion 622, an air guide plate or a heat radiating fin may be disposed in place of or in addition to the protrusion 613 corresponding to the concave portion 622.

  In FIG. 4 or FIG. 13, a groove 623 is formed along the bent portion 621 in the first hook 620. In FIG. 15, the groove 623 is typically formed by removing about half the thickness of the member of the first hook 620 by half punching. Therefore, the bottom of the groove 623 is formed so as to protrude from the surface of the first hook 620 on the side facing the opening 615 of the frame 610. Therefore, it is possible to arrange the groove 623 along the edge of the opening 615 and to function as a stopper for the bent portion 621 along the groove 623. Therefore, it is possible to prevent positional deviation between the bent portion 621 and the opening portion 615 of the frame, and to more reliably align the first hook 620 and the wall portion of the opening portion 615 without a gap. Therefore, it is possible to more reliably prevent the first hook 620 from being distorted by the force applied by the liquid crystal panel 100 being pressed by the elastic force from the second hook 630.

  A configuration for attaching the first hook 620 to the frame 610 will be described with reference to FIGS. 6, 7, 10, and 11. 6 or 7, the first hook 620 has a mounting portion 628 formed by bending a part of the members constituting the first hook 620 to the side of the frame 610 as shown in FIG. 10 or FIG. 610 has a claw portion 619. The first hook 620 is attached to the frame 610 by hanging the attachment portion 628 on the claw portion 619. When the mounting portion 628 contacts the wall portion on the side surface of the frame 610, heat conduction from the first hook 620 to the frame 610 is possible. The second hook 630 is also preferably attached to the frame 610 at the claw portion 619 in the same manner as the first hook 620.

  In the state where the first hook 620 is mounted on the frame 610, a force that is pulled by the mounting portion 628 hung on the claw portion 619 is generated, which may cause distortion. The mounting portion 628 has a hook portion 626, and a stopper portion 617 corresponding to the hook portion 626 is formed on the wall portion of the frame 610 where the claw portion 619 is provided. The hook portion 626 is stopped by being hooked on the stopper portion 617 by the force with which the mounting portion 628 is pulled by the claw portion 619 in a state where the mounting portion 628 is attached to the claw portion 619. As a result, it is possible to reduce the force with which the mounting portion 628 is pulled by the hook portion 626. Therefore, it is possible to prevent the first hook 620 from being distorted by attaching the attachment portion 628 to the claw portion 619.

  Next, with reference to FIG. 16 and FIG. 17, a configuration related to the incident-side surface portion of the mounting case characteristic in the present embodiment will be described. 16 is a plan view showing the positional relationship between the first and second light-shielding films and the first window portion in FIG. 4, and FIG. 17 is a cross-sectional view of FIG. It is sectional drawing for demonstrating the outline | summary of reflection. In FIG. 17, the illustration of the adhesive 640 in FIG. 10 is omitted.

  As described with reference to FIG. 2 or FIG. 3, in the liquid crystal panel 100, the frame light shielding film 53 is provided on the periphery of the image display region 10a as an example of the “first light shielding film” according to the present invention. Note that the frame light shielding film 53 is not limited to the configuration provided on the counter substrate 20 side as described with reference to FIG. 3, and a part or all of the frame light shielding film 53 may be provided on the TFT array substrate 10 side as a built-in light shielding film. . Hereinafter, the frame light shielding film 53 will be described as a “first light shielding film”. In FIG. 1, the area of the effective screen displayed on the screen or the like by the projector 1100 is defined by the first light shielding film 53.

  In FIG. 16 or 17, the dustproof substrate 122 as an example of “another substrate” according to the present invention disposed on the counter substrate 20 side has a frame shape corresponding to the first light shielding film 53. A second light shielding film 55 is formed in a pattern. Note that the second light shielding film 55 is disposed on the TFT array substrate 10 side when the liquid crystal panel 100 is disposed on the side opposite to the configuration shown in FIG. You may make it provide in the dust-proof board | substrate 121 (refer FIG. 3) arrange | positioned.

  Here, in FIG. 17, a dotted arrow schematically shows an example of a path for the liquid crystal device with respect to the projection light of the projector 1100 shown in FIG. Of the projection light in the projector 1100 shown in FIG. 1, the light traveling toward the peripheral region outside the image display region 10 a of the liquid crystal panel 100 is reflected by the first light shielding film 55 and the second light shielding film 53 and shielded. Is done. Further, the light traveling toward the peripheral region outside the image display region 10 a of the liquid crystal panel 100 is reflected and shielded by the surface portions of the first hook 620 and the frame 610 on the light incident side of the mounting case 600. .

  In the present embodiment, in at least one of the frame 610 and the first hook 620, the surface portion facing the light incident side is at least partially lighter than the first light shielding film 53 and the second light shielding film 55. Formed of a material having a low reflectance. For example, the first light-shielding film 53 and the second light-shielding film 55 are each formed to have a light reflectance of about 50 to 60% with chromium (Cr), or light with aluminum (Al). It is formed so that the reflectance is 85% or more. On the other hand, the first hook 620 is made of stainless steel so that the surface portion on the light incident side is at least partially at a light reflectance of about 30 to 50%. In addition to or instead of the first hook 620, the frame 610 is formed of, for example, aluminum (Al) or magnesium (Mg), and is subjected to a rust prevention treatment or the like so that a surface portion facing the light incident side is formed. At least partially, the light reflectance is 20% or less.

  Accordingly, in the surface portion on the light incident side of the mounting case 600, at least one surface portion of the frame 610 and the first hook 620 is at least partially more than the first light shielding film 53 and the second light shielding film 55. It can be formed so that light is not easily reflected. Therefore, it is possible to suppress reflection of light that travels toward the periphery outside the image display region 10a and does not contribute to display on the surface portion of the mounting case 600 on the light incident side. Accordingly, as indicated by a dotted arrow in FIG. 17, the light reflected from the surface portion of the first hook 620, for example, on the light incident side of the mounting case 600 is disposed on the light incident side outside the liquid crystal device. For example, stray light can be suppressed from being re-reflected by an optical member such as a polarizing plate in FIG. As a result, it is possible to more effectively prevent a large amount of stray light from being mixed into the display light emitted from the image display region 10a.

  In the projector 1100 shown in FIG. 1, the projection light is projected with powerful light that is narrowed so that the amount of light increases toward the center of the image display area 10 a with respect to the liquid crystal device. That is, in this case, in the liquid crystal device, light is incident such that the amount of light increases toward the center of the image display region 10a. Therefore, the amount of light incident on the liquid crystal device is greater near the edge of the image display area 10a than outside the image display area 10a. Therefore, as described above, when the reflectance of the surface portion of the frame 610 or the first hook 620 is lowered on the light incident side of the mounting case 600, the liquid crystal device with respect to strong light traveling near the edge of the image display region 10a. There is a possibility that the light shielding performance may deteriorate.

  In the present embodiment, the first light shielding film 53 and the second light shielding film 55 are formed so that the light reflectance is relatively high, so that the reflectance of the surface portion on the light incident side of the mounting case 600 is lowered. Therefore, even if the light shielding performance is deteriorated, the strong light traveling near the edge of the image display region 10a is reflected by the first light shielding film 53 and the second light shielding film 55 to more reliably shield the light. it can. Therefore, the temperature in the liquid crystal panel 100 is remarkably increased by the strong light traveling near the edge of the image display area 10a, thereby preventing the display quality of the liquid crystal device from deteriorating more reliably. be able to.

  As well shown in FIG. 16, the second light shielding film 55 is formed on the dust-proof substrate 122 so as to be partially located on the outer peripheral side with respect to the image display region 10 a than the first light shielding film 53. The In FIG. 17, the second light shielding film 55 partially overlaps the first light shielding film 53, but is disposed on the outer peripheral side with respect to the image display region 10 a than the first light shielding film 53 in the other part. . Therefore, the light traveling toward the outside of the image display region 10a with respect to the liquid crystal panel 100 is prevented from leaking in the overlapping portion by the first light shielding film 53 and the second light shielding film 55. It is possible to shield light in a wide area. Therefore, the strong light traveling near the edge of the image display area 10 a can be more reliably shielded by the first light shielding film 53 and the second light shielding film 55.

  In FIG. 16, the first window 625 of the first hook 620 is located partially on the outer peripheral side with respect to the image display region 10 a than the first light shielding film 53 and the second light shielding film 55. Formed. In other words, each of the first light-shielding film 53 and the second light-shielding film 55 is partially disposed inside the first window portion 625. The surface portion on the light incident side of the first window portion 625 is preferably formed of a material having a light reflectance lower than that of the first light shielding film 53 and the second light shielding film 55 as described above. Therefore, each of the first light shielding film 53 and the second light shielding film 55 that does not overlap with the first window portion 625 in which the light reflection performance is lowered progresses in the vicinity of the edge of the image display region 10a. By reflecting the light to be reflected, it can shield more reliably.

  As indicated by the dotted arrow in FIG. 17, the light traveling in the vicinity of the edge of the image display region 10a is reflected by the first light shielding film 53 and the second light shielding film 55 in this way, thereby liquid crystal such as projection light. While approximating the path of light traveling from the outside of the apparatus to the image display area 10a, it is possible to travel in a direction backward to the light source side. Therefore, it is possible to suppress the generation of stray light caused by the light traveling near the edge of the image display region 10a being reflected by the first light shielding film 53 and the second light shielding film 55.

  On the other hand, in FIG. 17, the first window portion 625 is arranged so as to partially overlap each of the first light shielding film 53 and the second light shielding film 55, thereby displaying an image on the liquid crystal panel 100. With respect to the light traveling toward the outside of the region 10a, the first light shielding film 53 and the second light shielding film 55, in addition to the first window portion 625, are wider while preventing light leakage from occurring in overlapping portions. It is possible to shield light in the area.

  As already described herein, with respect to the projection light and the like projected with powerful light that has been reduced so that the amount of light increases toward the center of the image display area 10a, the first light shielding film 53 and the second light shielding film 53 are used. The strong light traveling near the edge of the image display area 10a is reflected at each portion of the light shielding film 55, and the light that travels toward the outside of the image display area 10a and has a smaller amount of light is reflected on the first window. Reflected by the portion 625. Therefore, it is possible to more reliably suppress the generation of stray light due to the reflection of light in the mounting case 600 while suppressing the temperature rise in the liquid crystal panel 100.

  In the present embodiment, the light reflectance of the first hook 620 can be adjusted separately from the frame 610. Therefore, by adjusting the light reflectance, the first hook 620 can easily adjust the light to be reflected separately from the frame 610 and vice versa. Since the surface portion on the light incident side of the first hook 620 faces wider than the frame 610, it is preferable to form the first hook 620 so that the reflectance of light is higher than that of the frame 610 at least partially. For example, as described above, the first hook 620 is formed so that the light incident side surface portion is at least partially about 30 to 50% light reflective, and the frame 610 faces the light incident side. The surface portion to be formed is at least partially formed so that the light reflectance is 20% or less. As a result, in the surface portion on the light incident side in the mounting case 600, the first hook 620 facing the light incident side of the liquid crystal device more widely proceeds toward the periphery outside the image display area 10a and displays. More light that does not contribute can be reflected. Therefore, the temperature rise in the liquid crystal panel 100 due to more light entering the liquid crystal panel 100 can be more effectively suppressed.

  Therefore, in the present embodiment as described above, it is possible to perform high-quality display while improving the cooling efficiency in the liquid crystal device more reliably.

Second Embodiment
Next, a second embodiment according to the electro-optical device of the invention will be described. In the second embodiment, only differences from the first embodiment will be described with reference to FIG. FIG. 18 is a cross-sectional view for explaining an outline of light reflection in the liquid crystal device according to the second embodiment together with the configuration of the cross-sectional portion corresponding to FIG. In FIG. 18, similarly to FIG. 17, an example of a path with respect to the liquid crystal device is schematically shown with respect to the projection light of the projector 1100 shown in FIG.

  The liquid crystal device according to the second embodiment has a configuration similar to that of the comparative example already described with reference to FIG. 12, and a window portion 715 that contacts the peripheral region on one surface of the liquid crystal panel 100 forms a frame 610. The hook 630 is attached to the frame 610. Further, light can enter the image display area 10 a of the liquid crystal panel 100 from the window 715 h defined by the window portion 715.

  As indicated by the dotted arrows in FIG. 18, the light traveling toward the peripheral region outside the image display region 10 a of the liquid crystal panel 100 among the projection light in the projector 1100 shown in FIG. In addition to being reflected by the second light shielding film 53, it is also reflected and shielded from the surface portion of the frame 610 on the light incident side of the mounting case 600.

  In the frame 610, the surface portion on the light incident side is at least partially formed of a material having a light reflectance lower than that of the first light shielding film 53 and the second light shielding film 55. For example, the first light-shielding film 53 and the second light-shielding film 55 are formed so that the reflectance of light is 40% or more, respectively, and the surface portion on the light incident side of the frame 610 is at least partially reflected by light. Is 30% or less. Therefore, in the surface portion on the light incident side of the mounting case 600, the surface portion of the frame 610 may be formed so that light is less likely to be reflected than the first light shielding film 53 and the second light shielding film 55. it can. Therefore, in the second embodiment, as in the first embodiment, it is possible to suppress the generation of stray light due to the light reflected by the surface portion of the mounting case 600 on the light incident side.

  Further, the window portion 715 of the frame 610 is formed so as to be partially located on the outer peripheral side with respect to the image display region 10 a than the first light shielding film 53 and the second light shielding film 55. In other words, each of the first light-shielding film 53 and the second light-shielding film 55 is partially disposed inside the window portion 715. The surface portion on the light incident side of the window portion 715 is preferably formed of a material having a light reflectance lower than that of the first light shielding film 53 and the second light shielding film 55 as described above. Therefore, the light that travels near the edge of the image display region 10a in each portion of the first light shielding film 53 and the second light shielding film 55 that does not overlap with the window portion 715 that has deteriorated the light reflection performance in this way. By reflecting the light, it is possible to more reliably block light while suppressing generation of stray light due to such reflection.

  On the other hand, the window portion 715 is disposed so as to partially overlap each of the first light-shielding film 53 and the second light-shielding film 55, so that the liquid crystal panel 100 proceeds toward the outside of the image display region 10a. With the first light shielding film 53 and the second light shielding film 55 in addition to the window portion 715, it is possible to shield light in a wider area while preventing light leakage from occurring in the overlapping portions.

  Here, each of the first light-shielding film 53 and the second light-shielding film 55 is used for projection light and the like projected with powerful light that has been reduced so that the amount of light increases toward the center of the image display region 10a. In this portion, strong light traveling near the edge of the image display area 10a is reflected, and light traveling toward the outside of the image display area 10a and having a smaller amount of light is reflected by the window portion 715. Therefore, it is possible to more reliably suppress the generation of stray light due to the reflection of light in the mounting case 600 while suppressing the temperature rise in the liquid crystal panel 100.

  Therefore, in the second embodiment as described above, it is possible to obtain the same effect as in the first embodiment.

  In addition to the liquid crystal devices described in the above embodiments, the present invention is not limited to a reflective liquid crystal device (LCOS), a plasma display (PDP), a field emission display (FED, SED), or an organic EL device. The present invention can also be applied to a display, a digital micromirror device (DMD), an electrophoresis apparatus, and the like.

  The present invention is not limited to the above-described embodiments, and can be appropriately changed without departing from the spirit or concept of the invention that can be read from the claims and the entire specification. Electronic devices are also included in the technical scope of the present invention.

It is a top view which shows the structure of the projector which is an example of the electronic device to which a liquid crystal device is applied. It is a top view which shows the whole structure of a liquid crystal device. It is sectional drawing in the HH 'line | wire of FIG. It is the top view which looked at the liquid crystal device from the light-incidence side. It is the top view which looked at the liquid crystal device from the light emission side. It is the side view seen from the side of the mounting case in a liquid crystal device. It is the disassembled side view which decomposed | disassembled the liquid crystal device shown in FIG. 6 for every main component of the mounting case. FIG. 5 is a cross-sectional view illustrating a configuration of a cross-sectional portion of the liquid crystal device taken along line A0-A0 ′ illustrated in FIG. 4. FIG. 9 is an explanatory diagram for explaining a flow of cooling air supplied in a projector, for example, in the cross-sectional portion shown in FIG. 8. FIG. 5 is a cross-sectional view illustrating a configuration of a cross-sectional portion of the liquid crystal device taken along line B0-B0 ′ illustrated in FIG. 4. FIG. 11 is an exploded cross-sectional view in which the liquid crystal device illustrated in FIG. 10 is disassembled for each main component of a mounting case. It is sectional drawing which shows the structure of the cross-sectional part corresponding to FIG. 10 about the liquid crystal device of the comparative example with respect to this embodiment. FIG. 5 is an enlarged schematic diagram showing an enlarged portion surrounded by a dotted line A1 in FIG. 4. It is explanatory drawing for demonstrating that a 1st hook is manufactured using a progressive type manufacturing apparatus. FIG. 9 is an enlarged schematic view showing a portion surrounded by a dotted line A2 in FIG. 8 in an enlarged manner. FIG. 5 is a plan view showing an arrangement relationship between first and second light shielding films and a first window portion in FIG. 4. FIG. 11 is a cross-sectional view for explaining an outline of light reflection in the liquid crystal device with respect to the cross-sectional portion shown in FIG. 10. It is sectional drawing for demonstrating the outline | summary of the reflection of the light in the liquid crystal device of 2nd Embodiment with the structure about the cross-sectional part corresponding to FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10a ... Image display area, 20 ... Opposite substrate, 53 ... Frame light shielding film (first light shielding film), 55 ... Second light shielding film, 100 ... Liquid crystal panel, 121, 122 ... Dust-proof substrate, 600 ... Mounting case, 610 ... frame, 615 ... opening, 620 ... first hook, 625h ... first window, 630 ... second hook, 635h ... second window, 630a ... spring portion, 625 ... first window, 635 ... 2nd window part, 715 ... Window part, 715h ... Window

Claims (7)

A pair of substrates sandwiching the electro-optic material, another substrate provided on the opposite side of the electro-optic material of at least one of the pair of substrates, and provided on at least one substrate of the pair of substrates A first light-shielding film formed in a frame shape at the periphery of a pixel region in which a plurality of pixels are arranged, and a frame shape formed on the other substrate along the outer periphery of the first light-shielding film An electro-optical panel having a second light-shielding film;
A frame that accommodates the electro-optical panel, and a window portion that is attached to the light incident side of the frame and is provided corresponding to the pixel region, and is provided so as to overlap the second light shielding film. A mounting case having a cover member ,
At least the light incident side surface of said cover member, said first and second light shielding film is formed by a material having a low light reflectivity than Rutotomoni is formed by a material having high light reflectivity than the frame electro-optical device characterized in that is. 2. The electricity according to claim 1, wherein the cover member includes a bent portion that is bent along a slope provided on a light incident side of a wall portion of the frame that houses the electro-optical panel. Optical device. The frame has a protrusion provided to protrude from the light incident side surface of the cover member,
The electro-optical device according to claim 2, wherein the bent portion has a concave portion provided corresponding to the protruding portion. 3. The mounting case according to claim 1, wherein the mounting case includes another cover member that is attached to the light emitting side of the frame and has another window portion provided corresponding to the pixel region. Electro-optic device. It said window portion, an electro-optical device according to claim 1, characterized in that it is formed so as to be located partly the outer peripheral side with respect to the said pixel region than the first and second light-shielding film. The other substrate, an electro-optical device according to any one of claims 1 5, characterized in that provided as dust-proof substrate for preventing dust from being visually recognized. An electronic apparatus characterized by comprising an electro-optical device according to any one of claims 1 to 6.

Images