JP2015114406A - Electro-optical device, manufacturing method of electro-optical device, and electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electro-optical device that has suppressed a reduction in display quality, a manufacturing method of an electro-optical device, and an electronic apparatus.SOLUTION: An electro-optical device includes: a liquid crystal panel 40 including an element substrate 51, an opposing substrate 52 that is arranged opposite to the element substrate 51 with sealant 407 therebetween, and a liquid crystal layer 450 enclosed into an area surrounded by the sealant 407; and a mold 60 that covers the outer periphery of the liquid crystal panel 40 and has the contour to be a frame, where the mold 60 covers from the sealant 407 to an area overlapped with at least a part of the sealant 407 in plan view, on a surface of the element substrate 51 on the opposite side of the liquid crystal layer 450 and a surface of the opposing substrate 52 on the opposite side of the liquid crystal layer 450.

Description

  The present invention relates to an electro-optical device, a method for manufacturing the electro-optical device, and an electronic apparatus.

  As the electro-optical device, for example, an active drive type liquid crystal device including a transistor for each pixel as an element for controlling switching of a pixel electrode is known. Liquid crystal devices are used in, for example, direct view displays and light valves.

  The liquid crystal device includes, for example, a liquid crystal panel in which a sealing material is disposed at a peripheral portion between a pair of substrates and a liquid crystal layer is sealed inside the sealing material. Further, the liquid crystal panel is housed in a frame and fixed with an adhesive between the liquid crystal panel and the frame. In such a liquid crystal device, moisture may enter the liquid crystal layer through the sealing material, and the display quality may be reduced or the life of the liquid crystal layer may be reduced.

  Thus, for example, as disclosed in Patent Document 1, a method of reducing moisture intrusion into the liquid crystal layer by providing a molding material on the outer peripheral side of the sealing material is disclosed.

JP 2007-65619 A

  However, as the life of the liquid crystal device is extended and the definition is increased, further improvement in quality is required, and the method of Patent Document 1 has a problem that moisture resistance is insufficient.

  An aspect of the present invention has been made to solve at least a part of the above problems, and can be realized as the following forms or application examples.

  Application Example 1 An electro-optical device according to this application example includes a first substrate, a second substrate disposed so as to face the first substrate via a sealing material, and a region surrounded by the sealing material An electro-optical panel including an electro-optical layer, and a mold that covers an outer periphery of the electro-optical panel and serves as a frame, wherein the mold is opposite to the electro-optical layer of the first substrate. And the surface of the second substrate opposite to the electro-optic layer are covered from the end of the first substrate and the end of the second substrate to a region overlapping at least a part of the sealing material in plan view. The surface of the mold has liquid repellency.

  According to this application example, since the sealing material sandwiched between the pair of substrates is covered with the mold from the surface of the substrate opposite to the sealing material, the length of the interface between the substrate and the mold is increased. Can do. Therefore, it is possible to suppress moisture from entering the electro-optic layer through the interface and the sealing material.

  Application Example 2 In the electro-optical device according to the application example described above, it is preferable that a coating agent having liquid repellency is provided on the surface of the mold.

  According to this application example, since the coating agent is provided on the surface of the mold, it is possible to prevent moisture from entering the electro-optical layer through the mold.

  Application Example 3 In the electro-optical device according to the application example described above, it is preferable that a light-shielding hook having an opening hole overlapping a display region surrounded by the mold is provided so as to contact the mold.

  According to this application example, since the light-shielding hook is disposed so as to surround the display area, the range of light incident on the display area can be limited.

  Application Example 4 In the electro-optical device according to the application example described above, a frame body is provided so as to be in direct contact with the first substrate or the second substrate or indirectly through the third substrate. It is preferable that

  According to this application example, since the frame body is disposed so as to be in direct contact with the first substrate or the second substrate or indirectly, the substrate (electro-optical panel) is arranged via the frame body. Heat can be dissipated.

  Application Example 5 A method for manufacturing an electro-optical device according to this application example includes a first substrate, a second substrate disposed so as to face the first substrate with a sealant interposed therebetween, and the first substrate. A step of disposing a lower mold around an electro-optical panel having an electro-optical layer disposed between the second substrate, a step of disposing an upper mold on the electro-optical panel, and the lower mold And supplying a softened resin to form a mold on the outer periphery of the electro-optical panel.

  According to this application example, since the mold is formed on the outer periphery of the electro-optic panel using the upper mold and the lower mold, from the sealing material sandwiched between the pair of substrates to the surface of the substrate on the opposite side of the sealing material, The length of the interface between the substrate and the mold can be increased. Therefore, it is possible to suppress moisture from entering the electro-optic layer through the interface and the sealing material.

  Application Example 6 In the method of manufacturing the electro-optical device according to the application example, it is preferable that a step of applying a liquid-repellent coating process is performed on the surface of the mold after the step of forming the mold.

  According to this application example, since the coating process is performed on the mold, it is possible to suppress moisture from entering the electro-optical layer through the mold.

  Application Example 7 In the electro-optical device manufacturing method according to the application example described above, it is preferable to include a step of forming Teflon (registered trademark) on the surfaces of the upper mold and the lower mold.

  According to this application example, since the Teflon is formed in the mold, the mold and the mold supplied to the mold can be easily separated.

  Application Example 8 In the method of manufacturing the electro-optical device according to the application example, the method includes a step of fixing a light-shielding hook having an opening hole in the display area surrounded by the mold in the electro-optical panel. It is preferable.

  According to this application example, since the light-shielding hook having an opening hole in the display area is fixed to the mold, the range of light incident on the display area can be limited.

  Application Example 9 In the method of manufacturing an electro-optical device according to the application example, the frame is attached to the mold so as to be in direct contact with the first substrate or the second substrate or indirectly with the third substrate. It preferably includes a step of fixing the body.

  According to this application example, the frame is fixed so as to be in direct contact with the first substrate or the second substrate, or indirectly, so that the heat of the substrate (electro-optical panel) is transmitted through the frame. Heat can be dissipated.

  Application Example 10 Electronic equipment according to this application example includes the above electro-optical device.

  According to this application example, since the electro-optical device is provided, it is possible to supply an electronic apparatus that can improve display quality and suppress deterioration of the electro-optical layer.

The schematic diagram which shows the structure of the projection type display apparatus which is an example of an electronic device. The schematic diagram which shows the structure of the optical unit used for the projection type display apparatus. The schematic diagram which shows the detailed structure of the optical unit used for the projection type display apparatus. The schematic diagram which shows the structure of the liquid crystal panel used for the electro-optic module. FIG. 3 is a perspective view schematically showing a configuration of a liquid crystal device as an electro-optical device. FIG. 6 is a schematic cross-sectional view taken along line A-A ′ of the liquid crystal device illustrated in FIG. 5. FIG. 6 is a schematic cross-sectional view illustrating a method for manufacturing a liquid crystal device as an electro-optical device. FIG. 10 is a schematic cross-sectional view illustrating a configuration of a liquid crystal device according to a modification. FIG. 10 is a schematic cross-sectional view illustrating a configuration of a liquid crystal device according to a modification.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, embodiments of the invention will be described with reference to the drawings. Note that the drawings to be used are appropriately enlarged or reduced so that the part to be described can be recognized.

  In the following embodiments, for example, when “on the substrate” is described, the substrate is disposed so as to be in contact with the substrate, or is disposed on the substrate via another component, or the substrate. It is assumed that a part is arranged so as to be in contact with each other and a part is arranged via another component.

  In the present embodiment, an active matrix liquid crystal device including a thin film transistor (TFT) as a pixel switching element will be described as an example of an electro-optical device. This liquid crystal device can be suitably used as, for example, light modulation means (liquid crystal light valve) of a projection display device (liquid crystal projector) which is an example of an electronic apparatus.

<Configuration of electronic equipment>
FIG. 1 is a schematic diagram illustrating a configuration of a projection display device that is an example of an electronic apparatus. (A) is the schematic top view which looked at the projection type display apparatus from the upper direction. (B) is the model side view which looked at the projection type display apparatus from the side. FIG. 2 is a schematic diagram illustrating a configuration of an optical unit used in the projection display device. Hereinafter, the configuration of the projection display apparatus will be described with reference to FIGS. 1 and 2.

  As shown in FIG. 1, the projection display device 1 includes a power source unit 7 disposed on the rear end side inside an exterior case 2, and a light source lamp unit 8 (light source unit) at a position adjacent to the power source unit 7 on the front side of the device. ) And the optical unit 9 are arranged.

  Further, in the exterior case 2, the base end side of the projection lens unit 6 is located at the center of the front side (light emission side) of the optical unit 9. On one side of the optical unit 9, an interface board 11 on which an input / output interface circuit is mounted is arranged in the front-rear direction of the apparatus, and a video board 12 on which a video signal processing circuit is mounted is parallel to the interface board 11. Has been placed.

  As shown in FIG. 1B, a control board 13 for device drive control is arranged above the light source lamp unit 8 and the optical unit 9, and speakers 14R and 14L are provided at the left and right corners on the front end side of the device. Has been placed.

  Above and below the optical unit 9, intake fans 15A and 15B for cooling the inside of the apparatus are arranged. Further, an exhaust fan 16 is disposed on the side of the apparatus that is the back side of the light source lamp unit 8.

  Further, an auxiliary cooling fan 17 for sucking a cooling air flow from the intake fan 15 </ b> A into the power supply unit 7 is disposed at a position facing the ends of the interface board 11 and the video board 12. Among these fans, the intake fan 15B functions as a cooling fan for the liquid crystal panel 40 as an electro-optical panel described later.

  In FIG. 2, each optical element constituting the optical unit 9 includes the prism unit 20 constituting the color light combining means, the upper light guide 21 made of a metal such as magnesium (Mg), aluminum (Al), or the like. It is supported by the light guide 22. The upper light guide 21 and the lower light guide 22 are fixed to the upper case 3 and the lower case 4 (see FIG. 1) with fixing screws.

<Detailed configuration of optical unit>
FIG. 3 is a schematic diagram showing a detailed configuration of an optical unit used in the projection display device. Hereinafter, the configuration of the optical unit will be described with reference to FIG.

  As shown in FIG. 3, the optical unit 9 includes a light source lamp 805, an illumination optical system 923 having integrator lenses 921 and 922 that are uniform illumination optical elements, and a light beam W emitted from the illumination optical system 923 as red light. Color light separation optical system 924 that separates the light beams R, G, and B of green, blue.

  The optical unit 9 also includes three transmissive liquid crystal panels 40 (R), 40 (G), and 40 (B) as liquid crystal panels (light valves) that modulate the color light beams, and the modulated color light beams. It has a prism unit 20 as a color light combining optical system for combining, and a projection lens unit 6 for enlarging and projecting the combined light flux on the projection surface. In addition, a relay optical system 927 that guides the liquid crystal panel 40 (B) corresponding to the blue light beam B out of the color light beams separated by the color light separation optical system 924 is provided.

  The illumination optical system 923 further includes a reflection mirror 931 so that the optical axis 1a of light emitted from the light source lamp 805 is bent at a right angle toward the front of the apparatus. The integrator lenses 921 and 922 are disposed so as to be orthogonal to each other with the reflection mirror 931 interposed therebetween.

  The color light separation optical system 924 includes a blue-green reflecting dichroic mirror 941, a green reflecting dichroic mirror 942, and a reflecting mirror 943.

  First, in the blue-green reflective dichroic mirror 941, the blue light beam B and the green light beam G included in the light beam W that has passed through the illumination optical system 923 are reflected at right angles to the green reflecting dichroic mirror 942 side. Head. The red light beam R passes through the blue-green reflecting dichroic mirror 941, is reflected at a right angle by the rear reflecting mirror 943, and is emitted from the red light beam emitting portion 944 to the color light combining optical system side.

  Next, in the green reflection dichroic mirror 942, only the green light beam G out of the blue and green light beams B and G reflected by the blue-green reflection dichroic mirror 941 is reflected at a right angle, and the green light beam emitting section 945 changes the color. The light is emitted to the side of the photosynthetic optical system.

  The blue light beam B that has passed through the green reflecting dichroic mirror 942 is emitted from the blue light beam emitting portion 946 to the relay optical system 927 side. In this embodiment, the distances from the light beam emitting portion of the illumination optical system 923 to the color light beam emitting portions 944, 945, and 946 in the color light separation optical system 924 are all set to be substantially equal.

  Condensing lenses 951 and 952 are arranged on the emission side of the emission portions 944 and 945 of the red light beam and the green light beam of the color light separation optical system 924, respectively. Therefore, the red light beam and the green light beam emitted from each light emitting part are incident on these condenser lenses 951 and 952 and are collimated.

  The parallelized red and green light beams R and G are incident on the liquid crystal panels 40 (R) and 40 (G) after being polarized by the polarizing plates 160 (R) and 160 (G) and then modulated. Then, image information corresponding to each color light is added. That is, the liquid crystal panels 40 (R) and 40 (G) are switching-controlled by an image signal corresponding to image information by a driving unit (not shown), thereby modulating each color light passing therethrough. . As such driving means, known means can be used as they are.

  On the other hand, the blue light beam B is guided to the corresponding liquid crystal panel 40 (B) through the relay optical system 927 and then aligned in the polarization direction by the polarizing plate 160 (B). Modulation is performed according to the information. The relay optical system 927 includes a condensing lens 974, an incident-side reflecting mirror 971, an emitting-side reflecting mirror 972, an intermediate lens 973 disposed between these mirrors, and a collector disposed on the front side of the liquid crystal panel 40 (B). An optical lens 953 is included.

  As for the length of the optical path of each color beam, that is, the distance from the light source lamp 805 to each liquid crystal panel, the blue beam B is the longest, and the light amount loss of this beam is the greatest. However, the light loss can be suppressed by interposing the relay optical system 927.

  Each color beam modulated through each liquid crystal panel 40 (R), 40 (G), 40 (B) is incident on the polarizing plate 161 (R), 161 (G), 161 (B) and transmitted therethrough. The incident light enters the prism unit 20 (cross dichroic prism) and is synthesized. The synthesized color image is enlarged and projected onto a projection surface 1b such as a screen at a predetermined position via a projection lens unit 6 having a projection lens system.

<Configuration of electro-optical panel>
FIG. 4 is a schematic diagram illustrating a configuration of a liquid crystal panel as an electro-optical panel used in the electro-optical module. (A) is a schematic plan view which shows the structure of a liquid crystal panel. (B) is a schematic cross section which follows the HH 'line | wire of the liquid crystal panel shown to (a). Hereinafter, the configuration of the liquid crystal panel will be described with reference to FIG.

  4 and FIG. 5 described later, the traveling direction of the light source light is indicated by an arrow L11, and the traveling direction of the display light after the light source light is modulated by the liquid crystal panel 40 is indicated by an arrow L12, which is shown in FIG. The flow of cooling air (cooling gas) supplied to the liquid crystal panel 40 by the intake fan 15B or the like is not shown.

  In the following description, one of the directions intersecting each other in the in-plane direction of the liquid crystal panel 40 and the liquid crystal device 10 is an X-axis direction, the other is a Y-axis direction, and the directions intersecting the X-axis direction and the Y-axis direction are The Z axis direction.

  In the drawings referred to below, one side in the Y-axis direction (side on which the flexible wiring board 90 is provided) is the Y1 side, the other side is the Y2 side, and one side in the X-axis direction is the X1 side. The other side is the X2 side, one side in the Z-axis direction (the side on which the light source light is incident) is the Z1 side, and the other side (the side from which the display light is emitted) is the Z2 side.

  In the projection display device 1 described with reference to FIGS. 1 to 3, when the liquid crystal panels 40 (R), 40 (G), and 40 (B) are mounted on the optical unit 9, the liquid crystal panel 40 (R) is used. , 40 (G), 40 (B) are mounted as liquid crystal devices 10 (R), 10 (G), and 10 (B), which will be described later.

  The liquid crystal panels 40 (R), 40 (G), and 40 (B) have the same configuration, and the liquid crystal device 10 (R) including the liquid crystal panels 40 (R), 40 (G), and 40 (B). ), 10 (G), 10 (B) have the same configuration for red (R), green (G), and blue (B). Accordingly, in the following description, the liquid crystal panels 40 (R), 40 (G), 40 (B), the liquid crystal devices 10 (R), 10 (G), 10 (B), and the like indicate corresponding colors ( R, (G), and (B) will not be described.

  As shown in FIG. 4, in the liquid crystal panel 40, the translucent element substrate 51 (first substrate) and the translucent counter substrate 52 (second substrate) are separated by a sealing material 407 through a predetermined gap. It is pasted together. The element substrate 51 and the counter substrate 52 are made of quartz glass, heat-resistant glass, or the like. In the present embodiment, the element substrate 51 and the counter substrate 52 are made of quartz glass.

  In the present embodiment, in the liquid crystal panel 40, a liquid crystal layer 450 as an electro-optical layer is held in a region surrounded by a sealing material 407 between the element substrate 51 and the counter substrate 52.

  The sealing material 407 is provided in a frame shape along the outer edge of the counter substrate 52. The sealing material 407 is a photo-curing adhesive, a thermosetting adhesive, or an adhesive having both photo-curing and thermosetting, and the distance between the two substrates is set to a predetermined value. Gap materials such as glass fiber or glass beads are blended.

  Here, a part of the sealing material 407 is interrupted, and the liquid crystal injection port 407a is formed by the interrupted part. The liquid crystal injection port 407a is sealed with a sealing material 406 after the liquid crystal material is injected.

  In the present embodiment, the element substrate 51 has a quadrangular shape in plan view and includes side surfaces 511, 512, 513, and 514 each having four sides. Similarly to the element substrate 51, the counter substrate 52 is quadrangular in a plan view, and includes side surfaces 521, 522, 523, and 524 having four sides.

  In the approximate center of the liquid crystal panel 40, an image display area 40a for emitting modulated light is provided as a rectangular area. Corresponding to this shape, the sealing material 407 is also provided in a substantially square shape, and a rectangular frame-shaped peripheral region 40c is provided between the inner peripheral edge of the sealing material 407 and the outer peripheral edge of the image display region 40a.

  In the present embodiment, the element substrate 51 is larger in size than the counter substrate 52, and the four side surfaces 511, 512, 513, and 514 of the element substrate 51 protrude outward from the side surfaces 521, 522, 523, and 524 of the counter substrate 52. ing. Therefore, a step portion is formed around the counter substrate 52 by the element substrate 51 and the side surfaces 521, 522, 523, and 524 of the counter substrate 52, and the element substrate 51 is exposed from the counter substrate 52 in the step portion. Is in a state.

  Of the first surface 51a (one surface) and the second surface 51b (the other surface) of the element substrate 51, the first surface 51a facing the counter substrate 52 has a light-transmitting pixel electrode 405a in the image display region 40a. In addition, pixels including pixel transistors (switching elements / not shown) corresponding to the pixel electrodes 405a are formed in a matrix, and an alignment film 416 is formed on the upper side of the pixel electrodes 405a.

  Further, on the first surface 51a of the element substrate 51, a dummy pixel electrode 405b formed simultaneously with the pixel electrode 405a is formed in the peripheral region 40c. For the dummy pixel electrode 405b, a configuration in which the dummy pixel transistor is electrically connected, a configuration in which the dummy pixel transistor is not provided, and a configuration in which the dummy pixel electrode is directly electrically connected to the wiring, or a floating state in which no potential is applied The structure which exists in is adopted.

  In the element substrate 51, a side surface 514 located on one side Y1 in the Y-axis direction protrudes larger from the side surface 524 of the counter substrate 52 than the other side surfaces 511, 512, and 513, and the protruding portion 515 is closer to the counter substrate 52 side. A data line driving circuit 401 and a plurality of first terminals 402 are formed along the side surface 514 at the end of the surface (first surface 51a). A scanning line driving circuit 404 is formed on the element substrate 51 along the side surfaces 511 and 512.

  In addition, a flexible wiring substrate 90 is connected to the element substrate 51. Of the first surface 90 a and the second surface 90 b of the flexible wiring board 90, the second terminal 902 is formed on the first surface 90 a facing the element substrate 51 at a position overlapping the first terminal 402 in plan view. The first terminal 402 and the second terminal 902 are electrically connected. Accordingly, various potentials and various signals are input to the element substrate 51 via the flexible wiring substrate 90. Various methods can be employed for connection between the first terminal 402 and the second terminal 902. In this embodiment, the first terminal 402 and the second terminal 902 are connected by an anisotropic conductive material. It has been broken.

  Of the first surface 52a and the second surface 52b of the counter substrate 52, a transparent common electrode 421 is formed on the first surface 52a facing the element substrate 51, and an alignment film is formed on the common electrode 421. 426 is formed. The common electrode 421 is formed over substantially the entire surface of the counter substrate 52 or across a plurality of pixels as a plurality of strip-like electrodes. In this embodiment, the common electrode 421 is formed over the entire surface of the counter substrate 52.

  In addition, a light shielding layer 408 is formed on the first surface 52 a of the counter substrate 52 on the lower layer side of the common electrode 421. In the present embodiment, the light shielding layer 408 is formed in a frame shape extending along the outer peripheral edge of the image display region 40 a, and the image display region 40 a is defined by the inner edge of the light shielding layer 408. Note that the light shielding layer 408 may be formed as a black matrix or a black stripe in a region overlapping the region sandwiched between adjacent pixel electrodes 405a in the counter substrate 52.

  On the element substrate 51, an inter-substrate conduction electrode 409 is formed in a region overlapping the corner portion of the counter substrate 52 outside the sealing material 407 to establish electrical continuity between the element substrate 51 and the counter substrate 52. ing. An inter-substrate conducting material 409a containing conductive particles is disposed between the inter-substrate conducting electrode 409 and the counter substrate 52. The common electrode 421 of the counter substrate 52 is connected to the inter-substrate conducting material 409a and the inter-substrate conducting material. It is electrically connected to the element substrate 51 side through the common electrode 409. For this reason, a common potential is applied to the common electrode 421 from the element substrate 51 side. The sealing material 407 is provided along the outer peripheral edge of the counter substrate 52 with substantially the same width dimension.

  In the liquid crystal panel 40 having such a configuration, in the present embodiment, since the pixel electrode 405a and the common electrode 421 are formed of a light-transmitting conductive film such as an ITO film, the liquid crystal panel 40 is a transmissive liquid crystal panel. In the case of such a transmissive liquid crystal panel 40, light incident from one of the element substrate 51 and the counter substrate 52 is modulated while being transmitted through the other substrate and emitted. In this embodiment, light (indicated by an arrow L11) incident from the counter substrate 52 is transmitted through the element substrate 51 and emitted as modulated light (indicated by an arrow L12). For this reason, the counter substrate 52 is disposed on one side Z1 in the Z-axis direction, and the element substrate 51 is disposed on the other side Z2 in the Z-axis direction.

  Note that when the common electrode 421 is formed using a light-transmitting conductive film and the pixel electrode 405a is formed using a reflective conductive film, a reflective liquid crystal panel can be formed. In the case of a reflective liquid crystal panel, light incident from the counter substrate 52 side is modulated while being reflected and emitted by the element substrate 51 side.

  Since the liquid crystal panel 40 of the present embodiment is used as a light valve in the projection display device 1 (liquid crystal projector) described above, no color filter is formed. However, when the liquid crystal panel 40 is used as a direct-view color display device of an electronic device such as a mobile computer or a mobile phone, a color filter is formed on the counter substrate 52.

<Configuration of electro-optical device>
FIG. 5 is a perspective view schematically showing a configuration of a liquid crystal device as an electro-optical device. 6 is a schematic cross-sectional view taken along line AA ′ of the liquid crystal device shown in FIG. Hereinafter, the configuration of the liquid crystal device will be described with reference to FIGS. In FIG. 6, illustration and description of the flexible wiring board 90 are omitted.

  When the liquid crystal panel 40 described with reference to FIG. 4 is mounted on the projection display device 1 and the optical unit 9 described with reference to FIGS. 1 to 3, the flexible wiring board 90 is connected to the liquid crystal panel 40. In addition, as shown in FIG. 5 and FIG. 6, the liquid crystal device 10 is provided with a mold 60 disposed so as to cover the outer periphery of the liquid crystal panel 40 for the purpose of moisture-proof measures and reinforcement.

  Specifically, the mold 60 is a resin member having a rectangular opening hole in the center and having an outer shape as a frame, and accommodates the liquid crystal panel 40 inside. The mold 60 is made of, for example, a silicon-based resin.

  Specifically, the mold 60 has a surface opposite to the liquid crystal layer 450 in the second light transmitting plate 57 as the third substrate from the surface opposite to the liquid crystal layer 450 in the first light transmitting plate 56 as the third substrate. It is provided to cover the surface. Specifically, it is provided so as to cover a region overlapping with the sealing material 407 in plan view. The opening hole is opened so that the mold 60 is not disposed at least in a region overlapping with the image display region 40a.

  As shown in FIGS. 4, 5, and 6, in the present embodiment, when the liquid crystal device 10 is configured using the liquid crystal panel 40, the liquid crystal panel 40 has the second surface 51 b (outer surface / element) of the element substrate 51. A first light-transmitting plate 56 is attached to the opposite surface of the counter substrate 52 of the substrate 51 with an adhesive or the like, and a second surface 52b of the counter substrate 52 (the outer surface / surface of the counter substrate 52 opposite to the element substrate 51). ) Is pasted with an adhesive or the like.

  The first translucent plate 56 and the second translucent plate 57 are each configured as dust-proof glass, and dust and the like are disposed on the outer surface (second surface 51b) of the element substrate 51 and the outer surface (second surface 52b) of the counter substrate 52. Prevents from adhering to. For this reason, even if dust adheres to the liquid crystal panel 40, the dust is separated from the liquid crystal layer 450. Therefore, in the projection type display apparatus 1 described with reference to FIG. 1 and the like, dust is in a defocused state, so that it is possible to suppress the dust from being projected as an image on the projected image.

  Quartz glass, heat-resistant glass, or the like is used for the first light-transmitting plate 56 and the second light-transmitting plate 57. In this embodiment, the first light-transmitting plate 56 and the second light-transmitting plate 57 include element substrates. Similarly to 51 and the counter substrate 52, quartz glass is used, and the thickness thereof is 1.1 to 1.2 mm.

  The first light transmissive plate 56 is provided so as to overlap at least the image display region 40 a of the liquid crystal panel 40 with a part of the second surface 51 b of the element substrate 51 exposed. More specifically, the first light transmissive plate 56 has a quadrangular shape smaller than the element substrate 51 in plan view, and the second surface 51b of the element substrate 51 is exposed around the first light transmissive plate 56. Is in a state.

  The second light transmissive plate 57 is provided so as to overlap at least the image display region 40 a of the liquid crystal panel 40 with a part of the second surface 52 b of the counter substrate 52 exposed. More specifically, the second light transmissive plate 57 is a quadrangle that is substantially the same size as the first light transmissive plate 56 in plan view, and is smaller in size than the counter substrate 52. Therefore, the second surface 52 b of the counter substrate 52 is exposed around the second light transmitting plate 57.

  Further, as shown in FIG. 5, opening holes 60 a for arranging the liquid crystal device 10 in the projection display device 1 described above are provided at the four corners of the mold 60. In addition, it is not limited to the opening hole 60a, You may make it form a screw hole.

  Further, the surface of the mold 60 is subjected to a coating process having liquid repellency. An example of the coating process is fluorine coating.

  Thus, since the mold 60 is provided so as to cover from the surface opposite to the liquid crystal layer 450 in the first light transmitting plate 56 to the surface opposite to the liquid crystal layer 450 in the second light transmitting plate 57, The length of the interface between the mold 60 and the substrate (the element substrate 51, the counter substrate 52, the first light transmitting plate 56, and the second light transmitting plate 57) can be increased. Therefore, moisture can be prevented from entering the liquid crystal layer 450 through the interface and the sealant 407.

  Further, since the fluorine coating treatment is performed on the surface of the mold 60, it is possible to prevent moisture from entering the liquid crystal layer 450 through the mold 60.

<Method of manufacturing electro-optical device>
FIG. 7 is a schematic cross-sectional view illustrating a method for manufacturing a liquid crystal device as an electro-optical device. In particular, it is a schematic cross-sectional view showing a method of manufacturing a mold that becomes a frame in the liquid crystal device. Hereinafter, a mold manufacturing method will be described with reference to FIG.

  In the step shown in FIG. 7A, the liquid crystal panel 40 is placed in a mold. First, the concave lower mold 61 is arranged. On the bottom of the lower mold 61, a convex portion 61a for arranging a liquid crystal panel is provided. Next, the liquid crystal panel 40 is disposed on the convex portion 61a. Thereafter, the upper mold 62 is disposed on the liquid crystal panel 40.

  It is desirable to previously form Teflon on the surface of the upper mold 62 and the surface of the lower mold 61. Specifically, Teflon is formed at least in a portion of the upper mold 62 and the lower mold 61 where the upper mold 62 and the lower mold 61 are in contact with the mold resin 60b. Thereby, when the mold 60 is formed, the mold 60 can be easily removed from the upper mold 62 and the lower mold 61.

  In the step shown in FIG. 7B, the softened mold resin 60 b is supplied while surrounded by the side wall of the lower mold 61. First, the nozzle 63 for supplying the mold resin 60b is disposed above the lower mold 61 (between the upper mold 62 and the side wall of the lower mold 61). Next, the mold resin 60 b is supplied from the nozzle 63 into the lower mold 61.

  The mold resin 60b is, for example, a silicon-based resin as described above. Specifically, those that have adhesion with quartz and are cured at room temperature are preferred. The amount of the mold resin 60b is such that at least the upper surface of the second light transmitting plate 57 disposed on the counter substrate 52 is filled.

  In this way, by forming the mold 60 to such an extent that the upper surface of the second light transmissive plate 57 is filled, the length of the interface between the second light transmissive plate 57 and the mold 60 can be increased. In other words, it is possible to increase the distance from the portion of the second light transmitting plate 57 that is in contact with the atmosphere to the sealing material 407, and to prevent moisture from entering the liquid crystal layer 450 through the sealing material 407. be able to.

  In addition, after forming the mold 60 on the outer periphery of the liquid crystal panel 40, it is preferable to subject the surface of the mold 60 to a fluorine coating treatment. According to this, it is possible to suppress moisture from entering the liquid crystal layer 450 through the mold 60.

  As described above in detail, according to the liquid crystal device 10 of the present embodiment, the method for manufacturing the liquid crystal device 10, and the electronic apparatus, the following effects can be obtained.

  (1) According to the liquid crystal device 10 and the manufacturing method of the liquid crystal device 10 of the present embodiment, the liquid crystal layer 450 in the second light transmitting plate 57 and the liquid crystal layer 450 in the second light transmitting plate 57 from the surface opposite to the liquid crystal layer 450 in the first light transmitting plate 56. Since the mold 60 is formed so as to cover the surface on the opposite side, the length of the interface between the mold 60 and the substrate (the element substrate 51, the counter substrate 52, the first light transmitting plate 56, and the second light transmitting plate 57) is set. Can be long. Therefore, moisture can be prevented from entering the liquid crystal layer 450 through the interface and the sealant 407. Further, since the mold 60 is formed thick, moisture resistance can be improved. As a result, deterioration of the liquid crystal layer 450 can be suppressed, and deterioration of display quality due to poor controllability (responsiveness) of the liquid crystal can be suppressed.

  (2) According to the liquid crystal device 10 and the manufacturing method of the liquid crystal device 10 of the present embodiment, the surface of the mold 60 is coated, so that moisture can be prevented from entering the liquid crystal layer 450 through the mold 60. be able to.

  (3) According to the liquid crystal device 10 and the manufacturing method of the liquid crystal device 10 of the present embodiment, the frame 60 is replaced with the mold 60 having the function of the frame instead of the conventionally used metal frame. It is possible to reduce the cost. Moreover, the weight can be reduced by using the mold 60.

  (4) According to the electronic apparatus of the present embodiment, since the liquid crystal device 10 is provided, it is possible to supply an electronic apparatus that can improve display quality and suppress the deterioration of the liquid crystal layer 450. it can.

  The aspect of the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the spirit or idea of the invention that can be read from the claims and the entire specification. It is included in the range. Moreover, it can also implement with the following forms.

(Modification 1)
As described above, the present invention is not limited to forming only the mold 60 serving as a frame on the outer periphery of the liquid crystal device 10, and the configuration shown in FIG. FIG. 8 is a schematic cross-sectional view illustrating a configuration of a liquid crystal device according to a modification. The liquid crystal device shown in FIG. 8 is different from the above-described embodiment in that a hook 71 having a light shielding property and being parted is disposed on a mold 60.

  The hook 71 is disposed on the light incident side with respect to the mold 60, and is used as a parting part that limits a range in which the light is incident on the liquid crystal panel 40. The hook 71 is, for example, a metal plate. The hook 71 has an opening hole that overlaps the opening region of the mold 60. The opening hole of the hook 71 is smaller than the opening hole of the mold 60.

  The hook 71 is made of a material having higher thermal conductivity than the second light transmitting plate 57 and the liquid crystal panel 40 (the element substrate 51 and the counter substrate 52). More specifically, the hook 71 is made of a metal such as aluminum or copper. Accordingly, the hook 71 also functions as a heat radiating member that releases heat generated in the liquid crystal panel 40 through the mold 60. Further, the hook 71 has a blackened surface to suppress light reflection.

  For example, the mold 60 and the hook 71 may be fixed with an adhesive, or the convex portion of the mold 60 and the concave portion of the hook 71 may be fitted and fixed.

  According to this, since the light-shielding hook 71 is disposed so as to surround the image display area 40a, the range of light incident on the image display area 40a can be limited. In other words, it is possible to block the incidence of light on unnecessary areas.

  The hook 71 is not limited to being disposed on the counter substrate 52 side, and the hook 71 may be disposed on the element substrate 51 side.

(Modification 2)
As described above, the present invention is not limited to forming only the mold 60 serving as a frame on the outer periphery of the liquid crystal device 10 or providing the hook 71 as in the first modification, and may be configured as shown in FIG. FIG. 9 is a schematic cross-sectional view showing the configuration of the liquid crystal device of Modification 2. The liquid crystal device shown in FIG. 9 is different from the above embodiment and Modification 1 in that a hook 71 is provided on a mold 60 and a case 72 as a frame is provided below the mold 60.

  The hook 71 is the same as that of the modification 1, for example. The case 72 is made of a metal material such as aluminum or magnesium, and surrounds the mold 60 and is disposed in contact with the liquid crystal panel 40.

  The mold 60 and the hook 71 and the mold 60 and the case 72 may be fixed with an adhesive as described above, or may be fixed by fitting each other.

  According to this, since the case 72 is disposed in contact with the liquid crystal panel 40, the heat accumulated in the liquid crystal panel 40 can be efficiently radiated. Moreover, since the heat of the liquid crystal layer 450 is dissipated, it is possible to suppress a decrease in the life of the liquid crystal layer 450 (the life of the liquid crystal panel 40).

(Modification 3)
As described above, by supplying (dropping) the mold resin 60b to the lower mold 61, it is not limited to forming the mold 60 on the outer periphery of the liquid crystal panel 40. For example, it may be formed by a transfer mold method. Good. At this time, a mold resin 60b that can form the mold 60 at a temperature that does not affect the liquid crystal panel 40 is preferable.

(Modification 4)
As described above, as the electronic device on which the liquid crystal device 10 is mounted, in addition to the projection display device 1, EVF (Electrical View Finder), mobile mini projector, head-up display, smartphone, mobile phone, mobile computer, digital camera It can be used for various electronic devices such as digital video cameras, displays, in-vehicle devices, audio devices, exposure apparatuses and lighting devices.

(Modification 5)
As described above, the liquid crystal device 10 is not limited to being applied as an electro-optical device, and may be applied to, for example, an organic EL device, a plasma display, electronic paper (EPD), and the like. For example, in the case of a liquid crystal device, the electro-optic material is a liquid crystal. In the case of electronic paper, the electro-optic material is an electrophoretic material.

  DESCRIPTION OF SYMBOLS 1 ... Projection type display apparatus, 1a ... Optical axis, 1b ... Projection surface, 2 ... Exterior case, 3 ... Upper case, 4 ... Lower case, 6 ... Projection lens unit, 7 ... Power supply unit, 8 ... Light source lamp unit, DESCRIPTION OF SYMBOLS 9 ... Optical unit, 10 ... Liquid crystal device, 11 ... Interface board, 12 ... Video board, 13 ... Control board, 14R, 14L ... Speaker, 15A, 15B ... Intake fan, 16 ... Exhaust fan, 17 ... Auxiliary cooling fan, 20 ... prism unit, 21 ... upper light guide, 22 ... lower light guide, 40 ... liquid crystal panel as electro-optical panel, 40a ... image display area, 40c ... peripheral area, 51 ... element substrate as first substrate, 51a ... first 1st surface, 51b ... 2nd surface, 52 ... Counter substrate as 2nd substrate, 52a ... 1st surface, 52b ... 2nd surface, 56 ... 1st light transmission as 3rd substrate 57 ... 2nd light transmission board as 3rd board | substrate, 60 ... mold, 60a ... opening hole, 60b ... mold resin, 61 ... lower mold | type, 61a ... convex part, 62 ... upper mold | type, 63 ... nozzle, 71 ... hook 72: Case as a frame, 90: Flexible wiring board, 90a ... First surface, 90b ... Second surface, 160, 161 ... Polarizing plate, 401 ... Data line driving circuit, 402 ... First terminal, 404 ... Scanning Line drive circuit, 405a ... Pixel electrode, 405b ... Dummy pixel electrode, 406 ... Sealing material, 407 ... Sealing material, 407a ... Liquid crystal injection port, 408 ... Light shielding layer, 409 ... Inter-substrate conduction electrode, 409a ... Inter-substrate conduction Material, 416, 426 ... Alignment film, 421 ... Common electrode, 450 ... Liquid crystal layer as electro-optic layer, 511, 512, 513, 514 ... Side, 515 ... Projection, 521, 522, 523, 524 ... Surface, 805 ... Light source lamp, 902 ... Second terminal, 921, 922 ... Integrator lens, 923 ... Illumination optical system, 924 ... Color light separation optical system, 927 ... Relay optical system, 931 ... Reflection mirror, 941 ... Blue-green reflection dichroic Mirror, 942... Green reflecting dichroic mirror, 943. Reflecting mirror, 944, 945, 946... Exiting part, 951, 952, 953... Condensing lens, 971. Lens, 974 ... Condensing lens.

Claims (10)

A first substrate;
A second substrate disposed to face the first substrate with a sealant interposed therebetween;
An electro-optic layer enclosed in a region surrounded by the sealing material;
Including an electro-optic panel,
A mold that covers the outer periphery of the electro-optical panel and becomes a frame;
Including
The mold is formed on the surface of the first substrate opposite to the electro-optic layer and on the surface of the second substrate opposite to the electro-optic layer from the end of the first substrate and the end of the second substrate. Covered to at least a region overlapping with a part of the sealing material in plan view;
An electro-optical device, wherein a surface of the mold has liquid repellency. The electro-optical device according to claim 1,
An electro-optical device, wherein a coating agent having liquid repellency is provided on a surface of the mold. The electro-optical device according to claim 1 or 2,
An electro-optical device having a light-shielding hook having an opening hole overlapping with a display region surrounded by the mold so as to be in contact with the mold. An electro-optical device according to any one of claims 1 to 3,
An electro-optical device, wherein a frame is provided so as to be in direct contact with the first substrate or the second substrate, or in indirect contact with the third substrate. A first substrate; a second substrate disposed to face the first substrate with a sealant interposed therebetween; and an electro-optic layer disposed between the first substrate and the second substrate. Arranging a lower mold around the electro-optic panel;
Disposing an upper mold on the electro-optic panel;
Supplying a softened resin to the lower mold to form a mold on the outer periphery of the electro-optical panel;
A method for manufacturing an electro-optical device. A method for manufacturing the electro-optical device according to claim 5,
A method for manufacturing an electro-optical device, comprising a step of performing a coating process having liquid repellency on a surface of the mold after the step of forming the mold. A method of manufacturing the electro-optical device according to claim 5 or 6,
A method of manufacturing an electro-optical device, comprising a step of forming Teflon (registered trademark) on the surfaces of the upper mold and the lower mold. A method of manufacturing an electro-optical device according to any one of claims 5 to 7,
A method for manufacturing an electro-optical device, comprising: fixing a light-shielding hook having an opening hole in a display area surrounded by the mold in the electro-optical panel. A method for manufacturing an electro-optical device according to any one of claims 5 to 8,
A method of manufacturing an electro-optical device, comprising: fixing a frame body to the mold so as to be in direct contact with the first substrate or the second substrate or indirectly in contact with the third substrate. .   An electronic apparatus comprising the electro-optical device according to any one of claims 1 to 4.

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