JP2017142280A - Electro-optic device, method for manufacturing electro-optic device, electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electro-optic device that substantially prevents a display failure by a stress induced by a temperature rise, and a method for manufacturing the electro-optic device, and an electronic apparatus.SOLUTION: A liquid crystal device 100 as an electro-optic device includes: a cover 130 as a first frame body capable of accommodating a liquid crystal panel 111 as a display panel; and a plate 140 as a second frame body interposing the liquid crystal panel 111 between the plate 140 and the cover 130. The cover 130 has two first through-holes 133, 134 spaced apart from each other. The plate 140 is provided with second through-holes 143, 144 at positions individually corresponding to the two first through-holes 133, 134. The cover 130, the liquid crystal panel 111 and the plate 140 are bonded to each other by adhesive 70.SELECTED DRAWING: Figure 10

Description

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

  As an electro-optical device, for example, Japanese Patent Application Laid-Open No. H10-228561 includes a mounting case-containing electric device that accommodates the electro-optical device by holding at least a part of the peripheral region positioned around the image display region in the electro-optical device with a plate and a cover. An optical device is disclosed.

  Patent Document 1 discloses a structure in which a convex portion is formed on one side and a concave portion that can be fitted to the convex portion is formed on the other side at a portion where the plate and the cover are in contact with each other to position each other. .

JP 2004-198936 A

  However, in the positioning structure of the plate and the cover in Patent Document 1 described above, when the cover receives light emission from the light source and the temperature rises after fitting the convex portion into the concave portion, the linear expansion coefficient between the cover and the plate is increased. Due to the difference, the convex portion and the concave portion come into contact with each other in the fitting portion, and stress is generated. If the stress is transmitted to the display panel of the electro-optical device held by the cover and the plate, the substrate constituting the display panel may be distorted and display defects may occur.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

  Application Example An electro-optical device according to this application example includes a display panel, a first frame body that can accommodate the display panel, and a second frame that sandwiches the display panel between the first frame body. The first frame body is provided with two first through holes spaced apart from each other, and the second frame body corresponds to each of the two first through holes. In the position, a second through hole or a recess recessed on the opposite side to the display panel is provided, and the first frame body, the display panel, and the second frame body are bonded to each other by an adhesive. It is characterized by being.

  According to this application example, when the electro-optical device is manufactured, the display panel and the second frame are attached to the first frame with reference to the two first through holes provided in the first frame. The display panel can be sandwiched between the first frame body and the second frame body after positioning. That is, as a positioning structure, the first frame body and the second frame body are compared with the case where the first frame body and the second frame body are provided with a convex portion on one side and the concave portion that can be fitted to the convex portion is provided on the other side. Even if the linear expansion coefficients of the second frame are different, no stress is generated due to the contact between the first frame and the second frame. That is, it is possible to provide an electro-optical device that does not cause a display defect due to the stress even when the temperature of the frame body rises and can obtain stable display quality.

In the electro-optical device according to the application example described above, it is preferable that one of the two first through holes is a round hole and the other is a long hole.
According to this configuration, since the first frame body and the second frame body are positioned with reference to the round hole, the processing position accuracy of the two first through holes and the corresponding second through hole or concave portion is determined. Can be relaxed.

In the electro-optical device according to the application example described above, the second frame body is disposed on a side from which display light is emitted from the display panel, and the second frame body is on a side opposite to the surface on the display panel side. A parting member bonded to the surface is provided, and the parting member is provided with an opening corresponding to a display area of the display panel.
According to this configuration, unnecessary light emitted from a portion other than the display area of the display panel is shielded by the parting member. That is, it is possible to provide an electro-optical device in which display quality is hardly deteriorated by unnecessary light emission.

In the electro-optical device according to the application example, the second through hole is formed in the second frame body at a position corresponding to each of the two first through holes. It is preferable that a convex portion to be fitted with the second through hole is provided.
According to this configuration, unnecessary light passing through the second through hole can be shielded by the convex portion provided on the parting member.

  [Application Example] A method for manufacturing an electro-optical device according to this application example includes a display panel, a first frame body in which two first through holes are provided apart from each other, and each of the two first through holes. And a second frame body provided with a second through hole or a recess at a position corresponding to the above, and corresponding to each of the two first through holes with respect to the base material A first step of preparing a jig having a positioning pin erected at the position, and inserting the positioning pin into the two first through holes to place the first jig on the base material of the jig. A second step of setting the frame body, a third step of applying an adhesive to the housing portion of the first frame body set on the jig, and the housing portion coated with the adhesive A fourth step of accommodating the display panel; and an adhesive agent for the display panel accommodated in the first frame. A fifth step of applying, a sixth step of inserting the positioning pin into the second through hole or recess, and bonding the second frame to the display panel to which an adhesive has been applied; And a seventh step of curing the adhesive.

  According to this application example, in a state where the positioning pins are passed through the two first through holes, the display panel is positioned between the first frame body and the second frame body, and the positioning pins are bonded to each other. Thus, an electro-optical device is manufactured. Therefore, as a positioning method, the first frame and the second frame are provided with a convex portion on one side and provided with a concave portion that can be fitted with the convex portion on the other side. Even if the linear expansion coefficients of the frame body and the second frame body are different, no stress is generated due to the contact between the first frame body and the second frame body. That is, even if the temperature of the frame increases, a display defect due to the stress does not occur, and an electro-optical device that can obtain stable display quality can be manufactured.

In the electro-optical device manufacturing method according to the application example described above, one of the two first through holes is a round hole and the other is a long hole.
According to this method, since the first frame body and the second frame body are positioned with reference to the round hole, the processing of the two first through holes and the corresponding second through hole or recess is made. Position accuracy can be relaxed. Moreover, since the other is an elongate hole, insertion of the positioning pin with respect to a 1st frame becomes easy.

In the method of manufacturing the electro-optical device according to the application example, in the fourth step, the display panel is accommodated in the first frame body so that a side from which display light is emitted from the display panel faces upward. And an eighth step of attaching a parting member having an opening corresponding to the display area of the display panel to the second frame via an adhesive, and in the seventh step, the positioning pin The parting member is left pressed with respect to the first frame body positioned through the display panel and the second frame body, and the adhesive is cured.
According to this method, the applied adhesive is cured all at once, and the parting member capable of blocking unnecessary light emitted from a portion other than the display area of the display panel is bonded to the second frame. The In other words, it is possible to efficiently manufacture an electro-optical device in which display quality is unlikely to deteriorate due to unnecessary light emission.

In the electro-optical device manufacturing method according to the application example described above, in the sixth step, the positioning frame is inserted into the second through hole, and the second frame body is applied to the display panel coated with an adhesive. In the eighth step, it is preferable that the parting member provided with a convex portion to be fitted with the second through hole is bonded to the second frame.
According to this method, it is possible to manufacture an electro-optical device capable of blocking unnecessary light passing through the second through hole by the convex portion of the parting member.

  [Application Example] An electronic apparatus according to this application example includes the electro-optical device according to the application example described above.

[Application Example] Another electronic apparatus according to this application example includes an electro-optical device manufactured using the method of manufacturing an electro-optical device described in the application example.
According to these application examples, even if the temperature of the electro-optical device rises, stress due to contact between the first frame body and the second frame body does not occur. Therefore, an electronic device having stable display quality can be provided.

Schematic which shows the structure of the projection type display apparatus as an electronic device. The front view which shows the structure of a liquid crystal panel unit. The rear view which shows the structure of a liquid crystal panel unit. The schematic perspective view which shows the structure of the liquid crystal device seen from the incident side of light. The schematic perspective view which shows the structure of the liquid crystal device seen from the light emission side. The perspective view which shows the structure of the cover seen from the incident side of light. The perspective view which shows the structure of the cover seen from the light emission side. The perspective view which shows the structure of the plate seen from the incident side of light. The perspective view which shows the structure of the plate seen from the light emission side. FIG. 5 is a cross-sectional view showing the structure of the liquid crystal device taken along line A-A ′ in FIG. 4. 3 is a flowchart showing a method for manufacturing the liquid crystal device of the first embodiment. The disassembled perspective view which shows the assembly order of each part in the liquid crystal device of 1st Embodiment. FIG. 3 is a schematic cross-sectional view showing the method for manufacturing the liquid crystal device of the first embodiment. FIG. 3 is a schematic cross-sectional view showing the method for manufacturing the liquid crystal device of the first embodiment. FIG. 3 is a schematic cross-sectional view showing the method for manufacturing the liquid crystal device of the first embodiment. FIG. 3 is a schematic cross-sectional view showing the method for manufacturing the liquid crystal device of the first embodiment. FIG. 6 is a schematic cross-sectional view illustrating a structure of a liquid crystal device according to a second embodiment.

  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 present embodiment, an active drive type liquid crystal device including a switching element for each pixel will be described as an example of the electro-optical device. This liquid crystal device is suitably used as a light modulation element (liquid crystal light valve) in a projection display device (liquid crystal projector) as an electronic apparatus described below.

(First embodiment)
<Electronic equipment>
First, a projection display device (liquid crystal projector) as an electronic apparatus to which a liquid crystal device as an electro-optical device of the present embodiment is applied will be described with reference to FIG. FIG. 1 is a schematic diagram showing the configuration of a projection display device.

  As shown in FIG. 1, the projection display apparatus 1000 of the present embodiment includes a polarization illumination apparatus 1100 arranged along the system optical axis 1000L, two dichroic mirrors 1104 and 1105 as light separation elements, and three Reflective mirrors 1106, 1107, 1108, five relay lenses 1201, 1202, 1203, 1204, 1205, three transmissive liquid crystal light valves 1210, 1220, 1230 as light modulating elements, and cross dichroic as a light combining element A prism 1206 and a projection lens 1208 are provided.

  The polarized light illumination device 1100 is generally configured by a lamp unit 1101 as a light source composed of a white light source such as an ultra-high pressure mercury lamp or a halogen lamp, an integrator lens 1102, and a polarization conversion element 1103.

  The dichroic mirror 1104 reflects red light (R) and transmits green light (G) and blue light (B) among the polarized light beams emitted from the polarization illumination device 1100. Another dichroic mirror 1105 reflects the green light (G) transmitted through the dichroic mirror 1104 and transmits the blue light (B).

The red light (R) reflected by the dichroic mirror 1104 is reflected by the reflection mirror 1106 and then enters the liquid crystal light valve 1210 via the relay lens 1205.
Green light (G) reflected by the dichroic mirror 1105 enters the liquid crystal light valve 1220 via the relay lens 1204.
The blue light (B) transmitted through the dichroic mirror 1105 enters the liquid crystal light valve 1230 via a light guide system including three relay lenses 1201, 1202, 1203 and two reflection mirrors 1107, 1108.

  The liquid crystal light valves 1210, 1220, and 1230 are disposed to face the incident surfaces of the cross dichroic prism 1206 for each color light. The color light incident on the liquid crystal light valves 1210, 1220, and 1230 is modulated based on image information (image signal) and emitted toward the cross dichroic prism 1206. In this prism, four right-angle prisms are bonded together, and a dielectric multilayer film that reflects red light and a dielectric multilayer film that reflects blue light are formed in a cross shape on the inner surface thereof. The three color lights are synthesized by these dielectric multilayer films, and the light representing the color image is synthesized. The synthesized light is projected onto the screen 1300 by the projection lens 1208, which is a projection optical system, and the image is enlarged and displayed.

  A support frame 1207 for disposing each liquid crystal light valve 1210, 1220, 1230 at a predetermined position with respect to an incident surface for each color light of the cross dichroic prism 1206 corresponds to a corner portion on the incident surface side of the cross dichroic prism 1206. Is provided.

  The liquid crystal light valve 1210 is applied with a liquid crystal device as an electro-optical device to be described later. The liquid crystal device is arranged with a gap between a pair of polarizing elements arranged in crossed Nicols on the incident side and the emission side of colored light. The same applies to the other liquid crystal light valves 1220 and 1230.

  According to such a projection type display device 1000, since the liquid crystal device described later is used as the liquid crystal light valves 1210, 1220, 1230, a good-looking display quality and a high reliability quality are realized.

  The configuration of the projection display device 1000 is not limited to this. For example, the configuration of the polarization illumination device 1100, the liquid crystal light valves 1210, 1220, and 1230 may be provided with a fan for air cooling.

<Electro-optical device>
Next, a liquid crystal device as an electro-optical device according to the present embodiment will be described with reference to FIGS. 2 is a front view showing the configuration of the liquid crystal panel unit, FIG. 3 is a rear view showing the configuration of the liquid crystal panel unit, FIG. 4 is a schematic perspective view showing the configuration of the liquid crystal device viewed from the light incident side, and FIG. It is a schematic perspective view which shows the structure of the liquid crystal device seen from the injection | emission side.

  First, a liquid crystal panel unit included in the liquid crystal device will be described with reference to FIGS. As shown in FIG. 2, the liquid crystal panel unit 110 includes a transmissive liquid crystal panel 111 as a display panel and a flexible substrate (hereinafter referred to as an FPC) that is mounted on the liquid crystal panel 111 and is electrically connected to an external circuit. 112).

  The liquid crystal panel 111 has a liquid crystal layer sandwiched between the element substrate 10 and the counter substrate 20, and has a display region E in which a plurality of pixels P are arranged in a matrix. The liquid crystal panel 111 is a micro display having a display area E having a diagonal size of about 1 inch. As the base material of the element substrate 10 and the counter substrate 20, for example, a transparent quartz substrate having a thickness of 1.2 mm is used.

  The element substrate 10 is provided with a pixel electrode and a thin film transistor as a switching element for switching the pixel electrode for each of the plurality of pixels P. The counter substrate 20 is provided with a common electrode disposed to face a plurality of pixel electrodes of the element substrate 10 with a liquid crystal layer interposed therebetween. The pixel electrode and the common electrode are formed using a transparent conductive film such as ITO (Indium Tin Oxide), for example. The optical design such as selection of liquid crystal material and alignment control in the liquid crystal panel 111 is not particularly limited, and examples thereof include twist alignment (TW) and vertical alignment (VA) using nematic liquid crystal as the liquid crystal material. .

  In FIG. 2, the row direction in which the pixels P are arranged is defined as the X direction, the column direction is defined as the Y direction, and the direction orthogonal to the X direction and the Y direction is described as the Z direction. Note that the liquid crystal panel 111 is configured on the assumption that light enters from the opposite side to the Z direction.

  The element substrate 10 is larger than the counter substrate 20, and a portion protruding from the counter substrate 20 in the Y direction is a terminal portion 10a. The FPC 112 is mounted on the terminal portion 10a. The other end of the FPC 112 extending in the Y direction is provided with a plurality of terminals for connection to an external circuit.

  As shown in FIG. 3, a driver IC 113 and a chip resistor 114 are mounted on the back side of the FPC 112. The driver IC 113 sends out a control signal for driving and controlling the thin film transistor of the pixel P by an input signal input from an external circuit, and prevents foreign matter or moisture from entering the active surface after the surface mounting. The peripheral molding is performed by the molding material 115.

  Next, the liquid crystal device will be described with reference to FIGS. As shown in FIG. 4, the liquid crystal device 100 as the electro-optical device of the present embodiment includes a cover 130 as a first frame that holds the liquid crystal panel unit 110 described above and a cover 130 as a second frame. Plate 140.

  The cover 130 includes a cover main body 131 having an opening 131a (see FIG. 6) provided in a portion overlapping the liquid crystal panel 111, and a heat radiating portion 132 extending from the cover main body 131 in the Y direction. The heat dissipation part 132 is provided with a plurality of heat dissipation plates extending in the Y direction. The heat dissipating part 132 is provided at a position overlapping the driver IC 113 mounted in a plane on the back side of the FPC 112 (see FIG. 5).

  Two first through holes 133 and 134 for positioning are provided at the end of the cover body 131 opposite to the heat dissipating part 132 in the Y direction and spaced apart in the X direction. The detailed structure of the cover 130 will be described later.

  On the light incident side (front side) of the cover 130, the incident-side parting member 120 is attached to the cover main body 131. The incident-side parting member 120 has an opening 120 a having a shape and size corresponding to the display area E in the liquid crystal panel 111. Further, the incident-side parting member 120 has a plurality of holes 121 that function as locking portions that can be attached to the cover main body 131. The hole 121 is a rectangle that is long in the Z direction, and two holes 121 are provided on each side surface facing the X direction of the incident-side parting member 120 spaced apart in the Y direction. The incident-side parting member 120 has two recesses 122 that extend in the X direction with the opening 120a sandwiched in the Y direction and are recessed toward the cover main body 131.

  The incident-side parting member 120 is manufactured using a steel plate such as aluminum or stainless steel having a thickness of 0.2 mm, for example, having a light-reflective surface so that the temperature is not easily raised by incident light.

  As shown in FIG. 5, the plate 140 arranged on the light emission side with respect to the liquid crystal panel unit 110 is provided with openings 141a (see FIG. 9) provided in a portion overlapping the liquid crystal panel 111, and provided at the four corners. Mounting holes 145 formed therein. Although the detailed structure of the plate 140 will be described later, two second through holes 143 and 144 (see FIG. 9) are similarly provided at positions corresponding to the two first through holes 133 and 134 for positioning in the cover body 131. ing.

  An exit side parting member 150 is bonded to the light exit side of the plate 140. The exit-side parting member 150 has an opening 150a having a shape and size corresponding to the display area E of the liquid crystal panel 111, and a convex portion 153 fitted into the two second through holes 143 and 144 provided in the plate 140. 154.

  The exit side parting member 150 has, for example, a thickness so that even if light emitted from the opening 150a is reflected by another component member and is incident on the exit side parting member 150, it is reflected again on the surface and does not become stray light. Is manufactured using a steel plate such as 0.15 mm stainless steel, and a black coating that absorbs incident light is applied to the surface thereof. In addition, you may employ | adopt not only black coating but black plating processing. The exit side parting member 150 in the present embodiment is an example of the parting member of the present invention.

  Next, the detailed structure of the cover 130 will be described with reference to FIGS. FIG. 6 is a perspective view showing the structure of the cover as seen from the light incident side, and FIG. 7 is a perspective view showing the structure of the cover as seen from the light emission side.

  As shown in FIG. 6, the cover 130 as the first frame includes a cover main body 131 provided with an opening 131 a and a heat radiating portion 132 extending from the cover main body 131 in the Y direction.

  On the side surface of the cover main body 131 facing the X direction, the first protrusion 135 that protrudes in the X direction and extends in the Y direction, and the second protrusion 136 at a position corresponding to the hole 121 of the incident-side parting member 120. And are provided. The incident-side parting member 120 is attached to the cover main body 131 with the second protrusion 136 fitted and locked in the hole 121. Further, the incident-side parting member 120 has a side surface provided with the hole 121 so as not to interfere with the first protrusion 135 when the cover-side member 131 is attached.

  As shown in FIG. 7, the cover main body 131 is provided with an accommodating portion 131b whose inner portion along the opening 131a is stepped. The liquid crystal panel 111 is accommodated in the accommodating portion 131b.

  First through holes 133 and 134 are provided at corners of the end of the cover body 131 opposite to the heat dissipating part 132. One first through hole 133 is a round hole, and the other first through hole 134 is a long hole that is long in the X direction. The two first through holes 133 and 134 are tapered on the light incident side.

  Since such a cover 130 is disposed on the light incident side with respect to the liquid crystal panel unit 110, the temperature is likely to rise upon receiving incident light. Therefore, from the viewpoint of suppressing the change in display characteristics of the liquid crystal panel 111 due to the temperature rise of the cover 130, the cover 130 is preferably manufactured using a material having excellent thermal conductivity. Examples of the material having excellent thermal conductivity and easy molding include aluminum, magnesium, copper, and alloys containing these metals.

  Next, the plate 140 will be described with reference to FIGS. FIG. 8 is a perspective view showing the structure of the plate as seen from the light incident side, and FIG. 9 is a perspective view showing the structure of the plate as seen from the light emission side.

  As shown in FIG. 8, the plate 140 includes a plate body 141 and a pair of first attachments that extend from the plate body 141 in the light emitting direction in the Z direction and are adjacent to one side along the X direction. Part 142. Similarly, it has a pair of second attachment portions 146 and 147 that extend from the plate body 141 in the light emitting direction in the Z direction and are provided on the side portions along the Y direction. The tip end sides in the Z direction of the first attachment portion 142 and the second attachment portions 146 and 147 are bent inward (see FIG. 9).

  The first mounting portion 142 and the second mounting portions 146 and 147 are provided for mounting plate-like polarizing elements on the light emission side of the liquid crystal device 100 at a predetermined interval. The ends of the second attachment portions 146 and 147 on the first attachment portion 142 side are bent inward, and slits are provided in the bent portions. A hole is provided in the diagonal of the slit. A member holding the plate-like polarizing element is inserted into the slit and the hole, and the member holding the plate-like polarizing element can be moved around the slit and the hole. A part of the member holding the plate-like polarizing element extends to the first mounting portion 142, and is bonded and fixed after adjusting the mounting position.

  The plate body 141 has an opening 141 a at a position corresponding to the liquid crystal panel 111. A frame-shaped recess 141b is provided so as to surround the opening 141a. Furthermore, two concave portions 141c and 141d extending in the X direction with a frame-shaped concave portion 141b interposed in the Y direction are provided. These concave portions 141b, 141c, and 141d constitute convex portions 141e, 141f, and 141g protruding in the emission direction as shown in FIG. 9 when viewed from the light emission side. The projection-side parting member 150 described above is supported by these convex portions 141e, 141f, and 141g.

  As shown in FIG. 8, in the Y direction, two second through holes 143 and 144 penetrating the plate body 141 are spaced apart in a region between the frame-shaped recess 141b and the recess 141c extending in the X direction. Is provided. As described above, the two second through holes 143 and 144 are provided at positions corresponding to the two through holes 133 and 134 provided in the cover body 131, and one of the second through holes 143 is a round hole. The other second through hole 144 is a long hole extending in the X direction.

  As shown in FIGS. 8 and 9, the attachment holes 145 provided at the four corners of the plate main body 141 are long holes in the Y direction. The attachment hole 145 is an elongated hole for attaching the liquid crystal device 100 used as a liquid crystal light valve to the support frame 1207 in the projection display device 1000 described above. Accordingly, the liquid crystal device 100 is disposed to face the light incident surface of the cross dichroic prism 1206 at a predetermined interval.

  Such a plate 140 also preferably uses a material having excellent thermal conductivity and prevents reflection of incident light. In this embodiment, the plate 140 is manufactured using a cold-rolled steel plate (SPCC), The surface is black galvanized.

  Next, the structure of the liquid crystal device 100 will be described with reference to FIG. FIG. 10 is a cross-sectional view showing the structure of the liquid crystal device taken along the line A-A ′ of FIG. 4. The A-A ′ line is a line segment that crosses the first through holes 133 and 134 in the cover 130 and the liquid crystal panel 111 accommodated in the cover 130.

  As shown in FIG. 10, the liquid crystal panel 111 includes a liquid crystal layer 50 obtained by filling a liquid crystal material between the element substrate 10 and the counter substrate 20 that are arranged to face each other with a sealant 40 therebetween. When stress is applied to the liquid crystal panel 111 and the liquid crystal panel 111 is distorted, the thickness of the liquid crystal layer 50 may partially change to cause display defects. The liquid crystal device 100 of this embodiment has a structure in which display defects caused by stress are unlikely to occur. Specifically, when housing the liquid crystal panel 111 in the cover 130, the dustproof substrates 116 and 117 are bonded to the light incident side and the light emission side of the liquid crystal panel 111 via the transparent adhesive 60. Specifically, the dustproof substrate 116 is bonded to the counter substrate 20 of the liquid crystal panel 111, and the dustproof substrate 117 is bonded to the element substrate 10. The dustproof substrate 116 is slightly smaller than the counter substrate 20, and similarly the dustproof substrate 117 is slightly smaller than the element substrate 10. The adhesive 60 is a thermosetting type, but may be a photocurable type.

  By attaching the dustproof substrates 116 and 117, even if foreign matter adheres to the dustproof substrates 116 and 117, the foreign matter is unlikely to affect the display on the liquid crystal panel 111. That is, the foreign matter is not reflected in the image projected by the projection display apparatus 1000 described above.

  In addition, the dust-proof substrates 116 and 117 are, for example, transparent quartz substrates having a thickness of 1.1 mm, similarly to the base material of the element substrate 10 and the counter substrate 20. Therefore, the linear expansion coefficients of the dustproof substrates 116 and 117 are the same as the linear expansion coefficients of the element substrate 10 and the counter substrate 20, and are not easily deformed even if the temperature of the dustproof substrates 116 and 117 is increased by incident light.

  The liquid crystal panel 111 to which the dust-proof substrates 116 and 117 are attached is accommodated in an accommodating portion 131b provided in a step shape on the cover body 131. Further, the gap between the accommodating portion 131b and the liquid crystal panel 111 is filled with a thermosetting adhesive 70 and bonded thereto. The adhesive 70 is preferably opaque from the viewpoint of preventing light leakage.

  When the liquid crystal panel 111 is accommodated in the accommodating portion 131 b of the cover main body 131, the dustproof substrate 116 slightly protrudes from the light incident side surface 131 c of the cover main body 131. The incident-side parting member 120 is in contact with the dust-proof substrate 116 with a slight gap between the surface 131c. This gap is structured to be held by the concave portion 122 (see FIG. 6) provided in the incident-side parting member 120 described above protruding toward the cover body 131 and contacting the surface 131c.

  On the other hand, when the liquid crystal panel 111 is accommodated in the accommodating portion 131 b of the cover main body 131, the dustproof substrate 117 is in a state of protruding from the light emitting side surface 131 d of the cover main body 131. As a result, the dustproof substrate 117 is accommodated in the opening 141 a provided in the plate main body 141 of the plate 140.

  Although not shown in FIG. 10, when attaching the plate 140 to the cover 130 containing the liquid crystal panel 111 to which the dustproof substrates 116 and 117 are bonded, an adhesive is provided between the element substrate 10 and the plate body 141. 70 is filled.

  Specifically, as will be described in a manufacturing method of the liquid crystal device 100 described later, the two second through holes 143 and 144 of the plate body 141 are positioned with reference to the two first through holes 133 and 134 of the cover body 131, The liquid crystal panel 111 to which the dustproof substrates 116 and 117 are bonded is sandwiched between the cover 130 and the plate 140.

  Further, the projections 153 and 154 are fitted into the two through holes 143 and 144 provided in the plate main body 141, and the injection side parting member 150 is bonded to the plate main body 141 using the adhesive 70. The adhesive 70 is arranged in a frame shape along the convex portion 141e protruding to the light exit side of the plate body 141, and the plate body 141 and the exit side parting member 150 are bonded.

  Even if light enters two first through holes 133 and 134 provided in the cover main body 131, two second through holes of the plate main body 141 disposed corresponding to the two first through holes 133 and 134. Since projections 153 and 154 of the exit-side parting member 150 are fitted to 143 and 144, light is not leaked from the two second through holes 143 and 144. In addition, the shape and magnitude | size in planar view of the two convex parts 153 and 154 are the same. That is, the gap between the inner wall of the second through hole 144 that is a long hole and the convex portion 154 is larger than the gap between the inner wall of the second through hole 143 that is a round hole and the convex portion 153.

<Method of manufacturing electro-optical device>
Next, a method for manufacturing the liquid crystal device 100 as a method for manufacturing the electro-optical device according to the present embodiment will be described with reference to FIGS. FIG. 11 is a flowchart showing a manufacturing method of the liquid crystal device, FIG. 12 is an exploded perspective view showing the order of assembling each part in the liquid crystal device, and FIGS. 13 to 16 are schematic cross-sectional views showing the manufacturing method of the liquid crystal device.

  As shown in FIG. 11, the manufacturing method of the liquid crystal device 100 of the present embodiment includes a cover setting process (step S1), an adhesive application process (step S2), a panel setting process (step S3), and an adhesive application. It includes a process (step S4), a plate setting process (step S5), an adhesive application process (step S6), a parting member setting process (step S7), and an adhesive curing process (step S8). ing.

  First, in manufacturing the liquid crystal device 100, as shown in FIG. 12, an assembling jig 80 and a pressing jig 180 are prepared. The jig 80 has a flat base material 81 and two positioning pins 82 provided upright. The two positioning pins 82 are provided at positions corresponding to the two first through holes 133 and 134 provided in the cover 130. The positioning pin 82 can be inserted into the first through holes 133 and 134 and, for example, a φ2.0 mm stainless steel rod is used. The distal end portion of the positioning pin 82 is rounded in consideration of the insertability into the first through holes 133 and 134.

  In each of the steps S1 to S8 described below, the components constituting the liquid crystal device 100 are divided into a cover 130, a liquid crystal panel unit 110, a plate 140, and an exit side parting member with reference to the positioning pins 82 of the jig 80. Assemble in order of 150. After assembling, the parts are bonded while being pressed using a pressing jig 180. The process of preparing the assembly jig 80 is the first process of the present invention.

  In the cover setting process of step S1, as shown in FIG. 13, the incident side parting member 120 is inserted into the cover 130 in which the positioning pin 82 is inserted into the first through holes 133 and 134 and the entrance side parting member 120 is mounted. The jig 80 is set so as to contact the base material 81. Since one first through hole 133 is a round hole and the other first through hole 134 is a long hole extending in the X direction, the two positioning pins 82 can be easily attached to the two first through holes 133, 134. Can be inserted into. Then, the process proceeds to step S2. Step S1 is the second step of the present invention.

  In the adhesive application process of step S <b> 2, the adhesive 70 is applied to the housing portion 131 b of the cover 130 set on the jig 80. The adhesive 70 is applied in a frame shape along the middle stage of the staircase-shaped accommodation part 131b. As a method for applying the adhesive 70, it is preferable to use a dispenser (quantitative discharge device) in that a required amount can be applied with high accuracy. Then, the process proceeds to step S3. Step S2 is the third step of the present invention.

  In the panel setting process of step S3, as shown in FIG. 14, the liquid crystal panel 111 in which the dustproof substrates 116 and 117 are bonded to the accommodating portion 131b to which the adhesive 70 is applied with the adhesive 60, and the dustproof substrate 116 below. Housed and pressed so that it faces. Accordingly, the adhesive 70 is filled in the gaps between the dustproof substrate 116 and the liquid crystal panel 111 and the accommodating portion 131b. Then, the process proceeds to step S4. Step S3 is the fourth step of the present invention.

  In the adhesive application process of step S4, the adhesive 70 is applied in a frame shape on the element substrate 10 so as to surround the dust-proof substrate 117 adhered to the element substrate 10. Then, the process proceeds to step S5. Step S4 is the fifth step of the present invention.

  In the plate setting step of step S5, as shown in FIG. 15, the head of the positioning pin 82 is inserted into the second through holes 143 and 144, and the plate 140 is pressed against the element substrate 10 to which the adhesive 70 is applied. paste. Since the plate 140 has the surface 141h provided with the recess 141b facing the element substrate 10, even if the excessively applied adhesive 70 is pushed out by pressing, for example, the opening 141a of the plate main body 141 and the dust-proofing It fits in a gap with the side surface of the substrate 117 or a recess 141b. In other words, it is not necessary to strictly manage the application amount of the adhesive 70 in the preceding step S4. Then, the process proceeds to step S6. Step S5 is the sixth step of the present invention.

  In the adhesive application process of step S6, the adhesive 70 is applied in a frame shape along the convex portion 141e of the plate body 141. Then, the process proceeds to step S7.

In the parting member setting process of step S7, as shown in FIG. 16, first, the convex portions 153 and 154 are fitted into the second through holes 143 and 144 of the plate body 141 with respect to the plate 140 to which the adhesive 70 is applied. The injection side parting member 150 is pasted so as to match. In this embodiment, as shown in FIG. 16, when the injection-side parting member 150 is attached to the plate body 141, the convex portions 153 and 154 and the head of the positioning pin 82 are in contact with each other. For example, the length of the positioning pin 82 on the base material 81 in a state in which a slight gap is left between the convex portions 153 and 154 and the head of the positioning pin 82 so that the parting member 150 is not stuck. It is preferable to adjust the height.
Next, pressure is applied to the assembled liquid crystal device 100 using a pressing jig 180 made of an elastic member. Specifically, the bending portion 182 of the jig 180 is cut off on the injection side by pushing and locking the jig 180 in the Z direction so that the hook 181 of the jig 180 is hooked on the first protrusion 135 of the cover 130. The member 150 is pressed against the member 150. That is, the pressing jig 180 presses the liquid crystal panel 111 and the plate 140 against the cover 130 via the exit-side parting member 150. The clamping force by the jig 180 at this time is, for example, about 100 g. Then, the process proceeds to step S8. Steps S6 and S7 are the eighth step of the present invention.

  In the adhesive curing step in step S8, the assembled liquid crystal device 100 is left at room temperature or heated while being pressed by the jig 180, and the adhesive 70 is cured. The jig 180 is removed after being left for a predetermined time to cure the adhesive 70. Thereby, the liquid crystal device 100 shown in FIG. 10 is completed. Step S8 is the seventh step of the present invention.

According to the liquid crystal device 100 of the first embodiment and the manufacturing method thereof, the following effects can be obtained.
(1) With the positioning pin 82 of the jig 80 inserted into the first through holes 133 and 134, the liquid crystal panel 111 having the dustproof substrates 116 and 117 bonded to the cover 130 is accommodated. Further, the positioning pins 82 are inserted into the second through holes 143 and 144, and the plate 140 is attached to the element substrate 10 of the liquid crystal panel 111. Further, the projections 153 and 154 are fitted into the second through holes 143 and 144, and the injection side parting member 150 is attached to the plate 140. Therefore, the cover 130, the liquid crystal panel 111, the plate 140, and the exit-side parting member 150 can be bonded and bonded together while being guided (guided) to a predetermined position by the positioning pins 82.
The liquid crystal device 100 thus obtained has no portion where the plate 140 is in direct contact with the cover 130 used as a reference at the time of assembly even if the temperature of the cover 130 is increased by the incidence of light. Stress due to contact between the plate 130 and the plate 140 is not applied to the liquid crystal panel 111. Therefore, display defects caused by the liquid crystal panel 111 being distorted by the stress do not occur. That is, it is possible to provide or manufacture the liquid crystal device 100 that can obtain stable display quality.

  (2) The first through holes 133 and 134 of the cover 130 and the second through holes 143 and 144 of the plate are such that one through hole (133, 143) is a round hole and the other through hole (134, 144) is. Since it is a long hole in the X direction, it is easy to insert the positioning pin 82. Further, the cover 130 and the plate 140 can be positioned in the X direction and the Y direction with reference to the round hole.

  (3) The exit-side parting member 150 has an opening 150a corresponding to the shape and size of the display area E of the liquid crystal panel 111, and convex portions 153 and 154 that fit into the second through holes 143 and 144 of the plate 140. Therefore, even if light is incident on the first through holes 133 and 134 of the cover 130 serving as a reference at the time of assembly, unnecessary light that affects display is not leaked from the plate 140. That is, it is possible to provide or manufacture the liquid crystal device 100 in which a display defect due to leaked light hardly occurs.

  (4) If the liquid crystal device 100 is used as a liquid crystal light valve of the projection display device 1000, even if the temperature of the liquid crystal device 100 rises due to incident light, the liquid crystal panel 111 is caused by stress due to contact between the cover 130 and the plate 140. Thus, it is possible to provide a projection display device 1000 having high reliability quality capable of realizing a stable display state without causing a display defect due to distortion of the image.

(Second Embodiment)
Next, a liquid crystal device as an electro-optical device according to the second embodiment will be described with reference to FIG. FIG. 17 is a schematic cross-sectional view showing the structure of the liquid crystal device of the second embodiment.
The liquid crystal device according to the second embodiment is different from the liquid crystal device 100 according to the first embodiment in the configuration of the plate 140 and the exit-side parting member 150. Accordingly, the same components as those of the liquid crystal device 100 are denoted by the same reference numerals, and detailed description thereof is omitted. FIG. 17 is a schematic cross-sectional view corresponding to FIG. 10 used in the description of the first embodiment.

<Other electro-optical devices>
As shown in FIG. 17, a liquid crystal device 200 as another electro-optical device according to the present embodiment includes a liquid crystal panel 111 between a cover 130 as a first frame that can accommodate the liquid crystal panel 111 and the cover 130. And a plate 240 as a second frame that can hold the frame. Further, it has an emission side parting member 250 provided on the light emission side of the plate 240 and having an opening 250 a corresponding to the shape and size of the display area E of the liquid crystal panel 111. The cover 130, the liquid crystal panel 111, the plate 240, and the exit side parting member 250 are bonded to each other by the adhesive 70.

  The plate 240 is provided with two recesses 243 and 244 that are recessed on the opposite side of the liquid crystal panel 111 at positions corresponding to the first through holes 133 and 134 of the cover 130 that is a reference during assembly. Of the two recesses 243 and 244, the shape of one recess 243 viewed from the light emission side is circular, and the shape of the other recess 244 viewed from the light emission side is a track shape.

  The injection-side parting member 250 bonded to the plate 240 via the adhesive 70 is guided by the two concave portions 243 and 244 provided in the plate 240 in the X direction and provided in the plate 240 in the Z direction. It is supported by the convex part 241e. The convex portion 241e corresponds to the convex portion 141e of the plate 140 in the liquid crystal device 100 of the first embodiment, and is provided in a frame shape along the opening of the plate 240.

<Manufacturing method of other electro-optical device>
The manufacturing method of the liquid crystal device 200 as another electro-optical device of the present embodiment is basically the same as the manufacturing method of the liquid crystal device 100 of the first embodiment. Specifically, in the plate setting step (step S5) shown in FIG. 11, the head of the positioning pin 82 is inserted into the recesses 243 and 244 with respect to the cover 130 in which the liquid crystal panel 111 is accommodated. Then, the plate 240 is positioned with respect to the element substrate 10 of the liquid crystal panel 111.

According to the liquid crystal device 200 and its manufacturing method of the second embodiment, the following effects can be obtained.
(1) With the positioning pin 82 of the jig 80 inserted into the first through holes 133 and 134, the liquid crystal panel 111 having the dustproof substrates 116 and 117 bonded to the cover 130 is accommodated. Further, the positioning pin 82 is inserted into the recesses 243 and 244, and the plate 240 is attached to the element substrate 10 of the liquid crystal panel 111. Therefore, the cover 130, the liquid crystal panel 111, and the plate 240 can be bonded and bonded together while being guided (guided) to a predetermined position by the positioning pins 82.
Furthermore, the exit-side parting member 250 can be bonded to the plate 240 and bonded using the recesses 243 and 244 as guides.
The liquid crystal device 200 thus obtained has no portion where the plate 240 is in direct contact with the cover 130 which is a reference at the time of assembly even if the temperature of the cover 130 is increased by the incidence of light. The stress due to the contact between 130 and the plate 240 is not applied to the liquid crystal panel 111. Therefore, display defects caused by the liquid crystal panel 111 being distorted by the stress do not occur. In other words, it is possible to provide or manufacture the liquid crystal device 200 that can obtain stable display quality.

  (2) The first through holes 133 and 134 of the cover 130 are such that one first through hole 133 is a round hole and the other first through hole 134 is a long hole extending in the X direction. Easy to insert. Further, since the concave portions 243 and 244 of the plate 240 have a shape corresponding to the shape of the first through holes 133 and 134, the cover 130 and the plate 240 can be positioned in the X direction and the Y direction with reference to the round holes. .

  (3) Since the plate 240 is provided with the recesses 243 and 244 at positions corresponding to the first through holes 133 and 134 of the cover 130 which becomes a reference during assembly, light enters the first through holes 133 and 134. Even if it does, the unnecessary light which affects a display from the plate 240 does not leak. That is, it is possible to provide or manufacture the liquid crystal device 200 that is less likely to cause display defects due to leakage light.

  (4) If the liquid crystal device 200 is used as a liquid crystal light valve of the projection display device 1000, even if the temperature of the liquid crystal device 200 rises upon receiving incident light, the liquid crystal panel 111 is caused by stress due to contact between the cover 130 and the plate 240. Thus, it is possible to provide a projection display device 1000 having high reliability quality capable of realizing a stable display state without causing a display defect due to distortion of the image.

  The present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the gist or concept of the invention that can be read from the claims and the entire specification. A liquid crystal device), a method for manufacturing the electro-optical device (liquid crystal device), and an electronic apparatus to which the electro-optical device (liquid crystal device) is applied are also included in the technical scope of the present invention. Various modifications other than the above embodiment are conceivable. Hereinafter, a modification will be described.

  (Modification 1) In the first embodiment, the injection side parting member 150 may also be provided with through holes at positions corresponding to the first through holes 133 and 134 of the cover 130. According to this, the cover 130, the plate 140, and the injection side parting member 150 can be positioned with respect to each other by the positioning pins 82. In this case, in order to prevent light incident on the first through holes 133 and 134 from leaking, the through hole provided in the exit-side parting member 150 may be filled with, for example, resin.

  (Modification 2) The position where the cover 130 is provided with the first through-holes 133 and 134 serving as a reference at the time of assembly is not limited to the corner of the cover 130. For example, the first through holes 133 and 134 may be provided at positions on the heat radiating part 132 side of the cover body 131.

  (Modification 3) The step of curing the applied adhesive 70 may not be performed collectively. An adhesive curing step may be provided corresponding to each adhesive application step (step S2, step S4, step S6). For example, the adhesive 70 may be cured after the liquid crystal panel 111 is accommodated in the cover 130.

  (Modification 4) In the liquid crystal device 100 (or the liquid crystal device 200), the liquid crystal panel 111 is not limited to the transmissive type. The present invention can be applied even when the liquid crystal panel 111 is of a reflective type. In this case, it is not necessary to provide the opening 141 a corresponding to the liquid crystal panel 111 in the plate main body 141 of the plate 140.

  (Modification 5) The electronic apparatus to which the liquid crystal device 100 (or the liquid crystal device 200) is applied is not limited to the projection display device 1000. For example, it can be suitably used as a light modulation element of a head-up display (HUD).

  DESCRIPTION OF SYMBOLS 100,200 ... Liquid crystal device as an electro-optical device, 111 ... Liquid crystal panel as a display panel, 130 ... Cover as 1st frame, 133,134 ... 1st through-hole, 140,240 ... 2nd frame Plate, 143, 144 ... second through hole, 150 ... exit side parting member as parting member, 150a ... opening, 153, 154 ... convex part, 243, 244 ... concave part, 1000 ... projection type as electronic equipment Display device.

Claims (10)

A display panel;
A first frame that can accommodate the display panel;
A second frame that sandwiches the display panel with the first frame, and
The first frame body is provided with two first through holes spaced apart from each other,
The second frame body is provided with a recess that is recessed on the opposite side of the second through hole or the display panel at a position corresponding to each of the two first through holes.
The electro-optical device, wherein the first frame body, the display panel, and the second frame body are bonded to each other with an adhesive.   The electro-optical device according to claim 1, wherein one of the two first through holes is a round hole and the other is a long hole. The second frame is arranged on the side from which display light is emitted from the display panel,
A parting member that is bonded to a surface opposite to the surface on the display panel side of the second frame,
The electro-optical device according to claim 1, wherein the parting member is provided with an opening corresponding to a display area of the display panel. In the second frame body, the second through hole is formed at a position corresponding to each of the two first through holes,
The electro-optical device according to claim 3, wherein the parting member is provided with a convex portion that fits into the second through hole. A display panel, a first frame provided with two first through holes spaced apart from each other, and a second through hole or a recess provided at a position corresponding to each of the two first through holes. A method of manufacturing an electro-optical device comprising two frame bodies,
A first step of preparing a jig having a positioning pin erected at a position corresponding to each of the two first through holes with respect to the substrate;
A second step of inserting the positioning pin into the two first through holes and setting the first frame on the base material of the jig;
A third step of applying an adhesive to the housing portion of the first frame set in the jig;
A fourth step of housing the display panel in the housing part coated with an adhesive;
A fifth step of applying an adhesive to the display panel housed in the first frame;
A sixth step of inserting the positioning pin into the second through hole or recess and bonding the second frame to the display panel coated with an adhesive;
A seventh step of curing the applied adhesive; and a method of manufacturing the electro-optical device.   6. The method of manufacturing an electro-optical device according to claim 5, wherein one of the two first through holes is a round hole and the other is a long hole. In the fourth step, the display panel is accommodated in the first frame so that a side from which display light is emitted from the display panel faces upward,
An eighth step of attaching a parting member having an opening corresponding to the display area of the display panel to the second frame body via an adhesive;
In the seventh step, the parting member is left pressed against the first frame body positioned by the positioning pin via the display panel and the second frame body, and the adhesive is removed. The method of manufacturing an electro-optical device according to claim 5, wherein the electro-optical device is cured. In the sixth step, the positioning pin is inserted into the second through hole, and the second frame is bonded to the display panel to which an adhesive is applied,
The electro-optical device manufacturing method according to claim 7, wherein, in the eighth step, the parting member provided with a convex portion to be fitted with the second through hole is bonded to the second frame body. Method.   An electronic apparatus comprising the electro-optical device according to claim 1.   An electronic apparatus comprising the electro-optical device manufactured using the method for manufacturing an electro-optical device according to claim 5.

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