JP2010117640A - Electrooptical apparatus and electronic device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electrooptical apparatus, capable of stably holding an electrooptical panel and a backlight unit, from which the electrooptical panel and the backlight unit are readily detached. <P>SOLUTION: In the electrooptical apparatus including a liquid crystal panel 2, where the backlight unit 3 disposed opposite to the liquid crystal panel 2, a frame 4 holding the liquid crystal panel 2 and the backlight unit 3 and a cover 5 having a window part 51a corresponding to a pixel region of the liquid crystal panel 2 and covering a peripheral region, an engaging hole 52c is formed as an engaging part in the sidewall of the cover 5, an engaging protrusion 3a is provided on the backlight unit 3 so as to be protruded to a side part and the engaging hole 52c and the engaging protrusion 3a are engaged with each other to install the cover 5. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention relates to an electro-optical device such as a liquid crystal panel, an electro-optical device such as a liquid crystal device including a backlight unit for irradiating the electro-optical panel with light, and an electronic apparatus including the electro-optical device.

Electro-optical devices such as liquid crystal devices are used as display devices in computers, mobile phones, and other various electronic devices. In particular, liquid crystal devices are lightweight, thin, and consume less power, so they are used as display devices for various electronic devices. Widely used. Usually, in a liquid crystal device, a backlight unit configured with a light source for illumination and a light guide plate or a diffusion plate for guiding light from the light source to the panel as one unit is disposed on the back side of the liquid crystal panel. The backlight unit irradiates the liquid crystal panel with light from the back side to display a desired image in the pixel region on the front side.

Such a liquid crystal panel and a backlight unit are generally held together by some means, for example, held by a frame and a cover. When holding the LCD panel and backlight unit with the frame and cover, for example, the LCD panel is a frame (frame case).
The backlight unit, which is fitted and mounted on one side of the panel, is fitted and mounted on the other side of the frame with the back panel on the other side of the frame, has a top plate and side walls, and corresponds to the pixel area of the liquid crystal panel A cover (shield case) having a window portion to be covered and covering the peripheral region is mounted on the frame (see Patent Document 1).

Japanese Patent Laid-Open No. 2005-77557

By the way, Patent Document 1 does not specifically disclose the fixing between the cover and the frame to be mounted on the frame or the fixing between the back panel of the backlight unit and the frame. For example, when fixing the cover to the frame, If the cover is completely relied on and fixed, the cover cannot be easily removed from the frame. Therefore, if an abnormality occurs in the liquid crystal panel, which is an electro-optical panel, a great deal of labor is required to replace or repair it. It will be. Also, if the back panel of the backlight unit is fixed to the frame by completely relying on adhesion, the backlight unit cannot be easily removed from the frame in the same manner. In some cases, a great deal of labor is required for the replacement and repair. Therefore, the electro-optical panel and the backlight unit can be stably held,
There is a need for an electro-optical device that can easily remove the electro-optical panel and the backlight unit.

The present invention is proposed to solve the above-described problems, and can stably hold the electro-optical panel and the backlight unit, and can easily remove the electro-optical panel and the backlight unit. And an electronic apparatus including the electro-optical device.

An electro-optical device of the present invention includes a pixel region including a plurality of pixels, an electro-optical panel having a peripheral region provided around the pixel region, a backlight unit disposed to face the electro-optical panel, A frame that holds the electro-optical panel and the backlight unit; and a window that is opened corresponding to the pixel region of the electro-optical panel;
And a cover that covers the peripheral area, and an engagement portion for engaging with the backlight unit is provided on a side wall of the cover.
According to the present invention, the engaging portion is provided on the side wall of the cover that covers the peripheral region of the electro-optical panel, and the engaging portion is engaged with the backlight unit, so that the electro-optical panel and the backlight unit are covered with the frame and the cover. Can be held stably. In addition, by disengaging the engagement part of the cover, it is possible to easily remove the electro-optical panel and the backlight unit, respectively, and it becomes necessary to repair or replace the electro-optical panel or the backlight unit. Can be dealt with easily and quickly. Further, when the electro-optical panel or the backlight unit is bonded to the frame, the electro-optical panel or the backlight unit can be prevented from being detached from the frame even if the bonding is removed.

In the electro-optical device according to the aspect of the invention, an engagement hole is formed in the side wall of the cover as the engagement portion, and an engagement protrusion is provided on the backlight unit so as to protrude laterally, and the engagement hole and the engagement are provided. The cover is installed by engaging with a protrusion.
According to the present invention, by engaging the engagement hole on the side wall of the cover with the engagement protrusion of the backlight unit, the cover and the backlight unit can be easily and reliably engaged, and the engagement Separation can be performed easily.

In the electro-optical device according to the aspect of the invention, the engagement protrusion includes a first surface formed on the electro-optical panel side and a second surface formed on the side opposite to the electro-optical panel side, The first surface;
The inclined surface is inclined in a direction away from the electro-optical panel.
According to the present invention, the first surface of the engagement protrusion is an inclined surface that is inclined in a direction away from the electro-optic panel, so that the side wall of the cover is smoothly guided by the inclined surface, and the engagement hole of the cover is engaged. It can be easily guided to the engaging portion with the mating protrusion.

In the electro-optical device according to the aspect of the invention, an engagement claw is provided as the engagement portion at an end portion of the side wall of the cover, an engagement recess is provided in a side portion of the backlight unit, and the engagement claw and the engagement are provided. The cover is installed by engaging with the recess.
According to the present invention, by engaging the engagement claw of the cover with the engagement recess of the backlight unit, the cover and the backlight unit can be easily and reliably engaged,
The engagement / disengagement can be easily performed.

The electro-optical device of the present invention is characterized in that the backlight unit is urged to the frame by the cover.
According to the present invention, the backlight unit can be stably installed at a predetermined position of the frame.

The electro-optical device of the present invention is characterized in that the electro-optical panel is urged toward the frame by the cover.
According to the present invention, the electro-optical panel can be stably installed at a predetermined position of the frame.

The electro-optical device according to the aspect of the invention is characterized in that the end of the side wall of the frame on the emission light emission side from the backlight unit and the cover are separated from each other.
According to the present invention, the engagement portion of the cover can be easily engaged with the backlight unit by the separation portion, and the cover can be easily attached to the frame.

In the electro-optical device according to the aspect of the invention, a side portion of a side wall of the frame and the cover are in contact with each other.
ADVANTAGE OF THE INVENTION According to this invention, the stability of installation of a cover can be improved and the play of a cover can be prevented.

In the electro-optical device according to the aspect of the invention, the electro-optical panel includes a pair of substrates, and one side surface of one of the pair of substrates and a side surface facing the one side surface of the one substrate. The distance corresponds to the distance between the faces facing each other inside the frame.
According to the present invention, the electro-optical panel can be easily positioned with respect to the frame.

An electronic apparatus according to the present invention includes the electro-optical device according to the present invention.
According to the present invention, it is possible to configure an electronic apparatus having the effects of the electro-optical device of the present invention.

[Electro-Optical Device of First Embodiment]
As an example of the electro-optical device of the present invention, the electro-optical device according to the first embodiment using a liquid crystal device will be described. 1A is a plan view showing the electro-optical device according to the first embodiment, FIG. 1B is a side view thereof, and FIGS. 2, 3 and 4 are AA, BB and FIG. It is CC sectional drawing.

A liquid crystal device 1 as an electro-optical device according to the first embodiment includes a liquid crystal panel 2 as an electro-optical panel and a backlight unit 3 disposed on the back side of the liquid crystal panel 2 as shown in FIGS. Are held in the mounting case 6. The mounting case 6 is a frame 4 that is a holding member that holds the liquid crystal panel 2 and the backlight unit 3, and a holding member that is disposed so as to cover at least a part of the liquid crystal panel 2 held by the frame 4. A cover 5 is included. The cover 5 is made of a light shielding member.

As shown in FIGS. 1 to 4, the frame 4 includes side walls 41 facing in one direction such as the front-rear direction,
The side wall 42 has side walls 43 and 43 that face each other in the direction intersecting the side walls 41 and 42, and has a support portion 44 that protrudes inward from the side walls 41 to 43, and is transparent at the center. It is formed in a frame shape having a substantially H-shaped cross section provided with a partition plate-like support portion 44 having an opening 44a for use. The frame 4 is made of polycarbonate, for example, and is black.
The liquid crystal panel 2 is accommodated and attached to one concave portion 4a of the H-shaped frame 4 corresponding to one side of the support portion 44 (in the case of FIGS. 2 to 4, the concave portion above the support portion 44). Part 44
The other concave portion 4b corresponding to the other side (the concave portion below the support portion 44 in the case of FIGS. 2 to 4)
The backlight unit 3 is accommodated and attached.

The liquid crystal panel 2 and the backlight unit 3 are held by the frame 4 so as to be fitted in the recesses 4a and 4b, respectively. The liquid crystal panel 2 is formed, for example, by cutting the peripheral edge of the counter substrate 20 about half by dicing from the side opposite to the element substrate 10. The liquid crystal panel 2 has an inner side surface 20 a having a step with the side surface of the liquid crystal panel 2. The inner surface 20 a is fitted to a fitting surface 45 formed so as to protrude inward, and is attached to the recess 4 a of the frame 4. That is, the distance between the opposing inner side surfaces 20a and 20a of the counter substrate 20 is formed with a dimension that can be fitted corresponding to the distance between the opposing fitting surfaces 45 and 45 on the inner side of the frame 4. Inner side 2
0a and 20a are fitted between the fitting surfaces 45 and 45. The backlight unit 3 includes a support 4
4 is fitted into a recess 4b formed by the surface on the backlight unit side and the inner surfaces of the side walls 41 to 43. Further, flange-shaped protrusions 41a and 42a capable of preventing light leaked from the backlight unit 3 are formed on the side walls 41 and 42, and the cover 5 is disposed between the protrusions 41a and 42a.

The liquid crystal panel 2 and the backlight unit 3 are preferably fixed to the frame 4 with an adhesive or a double-sided adhesive tape as necessary. In this embodiment, the liquid crystal panel 2 is attached to the frame 4 with the support portion 44 or the like. It is fixed. Further, the backlight unit 3 supports the frame 4 via a substantially square frame-shaped double-sided adhesive tape 31 that also serves as a light shielding member for preventing the liquid crystal panel 2 from being irradiated with light outside a predetermined region. It is fixed to the other surface (lower surface in the case of FIGS. 2 to 4) of the portion 44, and the tip of the support portion 44 protrudes inward from the double-sided adhesive tape 31. It is preferable that the backlight unit 3 is detachably fixed with a double-sided adhesive tape 31 or the like of a slightly adhesive tape because the removal operation can be facilitated when the backlight unit 3 is detached from the frame 4.

As shown in FIGS. 1 to 4, the cover 5 includes a top plate 51 that covers one surface (upper surface in the case of FIGS. 2 to 4) of the liquid crystal panel 2 accommodated in the frame 4, and the width of the top plate 51. Direction (left and right in FIG. 3 and FIG. 4) have side walls 52 and 52 formed by bending at substantially right angles from the top plate 51 at both ends, and the outer surface which is one surface side of the liquid crystal panel 2 at the top plate 51 Side wall 52.
52, each part of the outer surface of the side walls 43, 43 of the frame 4 facing each other is covered. The top plate 51 of the cover 5 is provided with a window portion 51a formed by opening the portion at a position corresponding to the pixel region 2A of the liquid crystal panel 2 shown in FIG. It arrange | positions so that the peripheral area | region of 2 A of pixel areas may be covered. The cover 5 is, for example, stainless steel,
While being formed of aluminum or the like, the visually recognizable outer surface is painted black so that display contrast can be enhanced and glare during visual recognition can be prevented.

Further, in a state where the liquid crystal panel 2 and the backlight unit 3 are held by the frame 4, the side wall 52 of the cover 5 and the backlight unit 3 are connected, and the four members 2 to 5 are integrated. As a connecting means between the side wall 52 of the cover 5 and the backlight unit 3, an engaging hole 52c as an engaging portion is formed in each of the side walls 52 and 52, and the engaging protrusion 3 that engages with the engaging hole 52c.
a is integrally provided at the left and right ends of the backlight unit 3 in FIG. 4, and is connected by engagement of the engagement hole 52c and the engagement protrusion 3a. In the figure, reference numeral 43a denotes an overhanging portion provided on the outer surface side of each side wall 43, 43 of the frame 4 so as to project integrally with the side wall 52 of the cover 5 and outward from the side wall 52 of the cover 5. Side walls 52 and 52 so as to avoid interference.
A concave portion 52a is formed in each of the concave portions 52a, and engaging holes 52c are formed in the downward projecting portions 52b and 52b on both sides of the concave portion 52a.

Two engagement protrusions 3a with which the engagement holes 52c are engaged are respectively provided at the left and right ends of the backlight unit 3 in FIG. 4 corresponding to the respective engagement holes 52c. The first surface on one side (liquid crystal panel 2 side) of the engaging projection 3a is an inclined surface 3a1, the second surface on the opposite side is a horizontal surface, and the inclined surface 3a1 is inclined in a direction away from the liquid crystal panel 2. is doing. The inclined surface 3a1 is
For example, it is preferable to use a convex curved surface having a planar shape or an arc shape in cross section. When the engaging hole 52c of the cover 5 is engaged with the engaging protrusion 3a by the inclined surface 3a1 of the engaging protrusion 3a, the side wall 52 is pushed outward and the lower edge of the engaging hole 52c is engaged. By overcoming the joint 3a,
The engagement hole 52c is adapted to engage with the engagement protrusion 3a. Engagement hole 52c and engagement protrusion 3a
The inner surface of the top plate 51 of the cover 5 attached by engagement with the side wall 43 is provided so as to be separated from the end portion 43b on the irradiation light emitting side of the backlight unit 3 of the side wall 43 of the frame 4.
The inner side surface of 2 is provided in contact with the outer side surface of the side wall 43 of the frame 4.

The configuration of the liquid crystal panel 2 used in the liquid crystal device 1 of FIGS. 1 to 4 is appropriate. In the first embodiment, an active matrix type liquid crystal panel using a thin film transistor is used as a switching element for a pixel. A typical configuration will be described with reference to FIG. 5A is a plan view of the liquid crystal panel 2, and FIG. 5B is a cross-sectional view taken along the line aa in FIG.

The liquid crystal panel 2 of the first embodiment includes an element substrate (quartz, glass, silicon, etc.)
A thin film transistor is provided on a TFT array substrate 10, and a counter substrate 20 made of glass, quartz, or the like is provided facing the element substrate 10. Element substrate 10 which is a pair of substrates
The counter substrate 20 and the counter substrate 20 are bonded and fixed to each other by a sealing material 24 provided around the pixel region (image display region) 2A, and an electro-optic is provided between the element substrate 10 and the counter substrate 20 inside the sealing material 24. A liquid crystal layer 30 which is a substance is enclosed. In FIG. 5 (a), 24a is the sealing material 2
A liquid crystal injection port 24b formed by removing a part of 4 is a sealing material for closing the liquid crystal injection port 24a.

A data line driving circuit 14 and an external circuit that drive data lines by supplying image signals to data lines (not shown) at a predetermined timing in an area outside the sealing material 24, that is, a peripheral area outside the pixel area 2A. Connection terminals 15 are provided along one side of the element substrate 10. A scanning line driving circuit 16 that drives a scanning line by supplying a scanning signal to a scanning line (not shown) at a predetermined timing is parallel to two sides adjacent to one side where the data line driving circuit 14 is provided, and It is provided on the element substrate 10 at a position facing the light shielding film 25 provided inside the sealing material 24. On the remaining side of the element substrate 10, a plurality of wirings 17 are provided for connecting the side opposite to the external circuit connection terminal 15 side of the scanning line driving circuit 16.

Vertical conduction terminals 19 are formed on the element substrate 10 at the four corners of the sealing material 24, and the lower end contacts the vertical conduction terminals 19 between the element substrate 10 and the counter substrate 20, and the upper end is the counter electrode 20. A vertical conduction member 18 is provided in contact with the element substrate 10, and the vertical conduction member 18 provides electrical conduction between the element substrate 10 and the counter substrate 20.

A pixel electrode 12 or the like constituting a pixel is provided on the element substrate 10, and an alignment film 13 is provided on the liquid crystal layer 30 side. A counter electrode 22 is formed on the counter substrate 20 over substantially the entire surface thereof.
The alignment film 23 is also provided on the liquid crystal layer 30 side. Each alignment film 13, 23 is made of, for example, a transparent organic film such as a polyimide film, and the surface thereof is subjected to a rubbing process or the like so that the liquid crystal molecules in the liquid crystal layer 30 are supplied with a voltage supplied to the liquid crystal layer 30. Accordingly, it is oriented in a predetermined direction.

In the liquid crystal device 1 of FIGS. 1 to 4, the liquid crystal panel 2 of FIG. 5 is held in a frame 4 with its vertical position inverted, but the orientation of the liquid crystal panel 2 and the liquid crystal panel 2 by the frame 4 are held.
The holding structure and the like can be changed as appropriate. 1 to 4, reference numerals 11 and 21 denote polarizing plates provided on the element substrate 10 and the counter substrate 20 on the opposite sides of the liquid crystal layer 30, and reference numerals 26 and 27 denote the liquid crystal panel 2 and the backlight unit 3, respectively, and an external power source. And flexible printed wiring boards (FPC) 41b and 41c that also serve as conductive connection members for electrically connecting the signal input source and the liquid crystal panel 2 and the backlight unit 3 when accommodated in the frame 4. In order to prevent the flexible printed wiring boards 29 and 30 from interfering with the front side wall 41 of the frame 4, the concave portions are formed in the side wall 41.

The backlight unit 3 used in the liquid crystal device 1 of FIGS. 1 to 4 is configured to irradiate light from a light source such as an LED onto the back side of the liquid crystal panel 2 through a light guide or a light diffusion plate. These components are covered with a casing or the like to form a unit. The constituent members, the internal structure, and the like of the backlight unit 3 can be appropriately changed. In the illustrated example, the constituent members, the internal structure, and the like are omitted, and only the overall appearance is shown.

Although the procedure for accommodating and arranging the liquid crystal panel 2 and the backlight unit 3 in the mounting case 6 is appropriate, for example, the following procedure is used. First, as shown in FIG. 6A, one side of the frame 4 (
The liquid crystal panel 2 is inserted into the recess 4a on the upper side in the figure, and the backlight unit 3 is inserted into the recess 4b on the other side (lower side in the figure), and held by the frame 4. The liquid crystal panel 2 is inserted into the recess 4 a with the counter substrate 20 facing the frame 4, and the inner side surface 20 a is the side wall 41.
Are fitted to the fitting surface 45 of? 43, and the contact portion between the liquid crystal panel 2 and the side walls 41 to 43 is fixed with an adhesive. At this time, in the vicinity of the base portion of the support portion 44, when a concave adhesive reservoir 44b is formed on the surface of the one side (liquid crystal panel 2 side) and the adhesive is accumulated in the adhesive reservoir 44b and bonded, good adhesion is achieved. Is possible and suitable. The backlight unit 3 is inserted into the recess 4b with the side of the engaging protrusion 3a projecting sideways facing the support portion 44, and is fixed to the support portion 44 through a double-sided adhesive tape 31 that is a slightly adhesive tape. Is done. At this time, the liquid crystal panel 2
And the backlight unit 3 can be separately mounted on the frame 4, for example, the liquid crystal panel 2 is attached to the frame 4, and the backlight unit 3 is attached only to non-defective products in the subsequent inspection, It is possible to avoid extra costs.

Next, as shown in FIG. 6B, a cover 5 is fitted from the liquid crystal panel 2 side to the frame 4 that holds the liquid crystal panel 2 and the backlight unit 3, and the outer surface side of the liquid crystal panel 2 by the top plate 51. The side walls 52 and 52 facing each other cover part of the outer surfaces of the side walls 43 and 43 facing each other of the frame 4. At the time of external fitting, the side wall 52 of the cover 5 is pushed outward by the engagement protrusion 3a, and the lower edge of the engagement hole 52c gets over the engagement protrusion 3a, whereby each engagement hole 52c. Engages with the engaging protrusion 3a. In particular, in this embodiment, the engagement protrusion 3
The lower edge of the side wall 52 is smoothly spread outward by the inclined surface 3a1 of the a, and the engagement hole 52c
Smoothly engages with the engaging protrusion 3a. Due to the engagement of the engagement hole 52c with the engagement protrusion 3a, the cover 5 is prevented from falling off.

According to the first embodiment, the engagement hole 52c is provided as the engagement portion on the side wall 52 of the cover 5, and the engagement portion 52c is engaged with the engagement protrusion 3a of the backlight unit 3, thereby allowing the liquid crystal panel 2 to be engaged.
The backlight unit 3 can be stably held by the frame 4 and the cover 5. Further, by disengaging the cover 5, the liquid crystal panel 2 and the backlight unit 3 can be easily detached, and when the liquid crystal panel 2 or the backlight unit 3 needs to be repaired or replaced. It can be dealt with easily and quickly. Further, when the liquid crystal panel and the two backlight units 3 are bonded to the frame, the liquid crystal panel 2 and the backlight unit 3 can be prevented from being detached from the frame 4 even if the bonding is removed.

Further, the engagement between the engagement hole 52c and the engagement protrusion 3a allows the cover 5 and the backlight unit 3 to be easily and reliably engaged, and the engagement and disengagement thereof can be easily performed. In addition, an inclined surface 3a that inclines the first surface of the engagement protrusion 3a away from the liquid crystal panel 2.
1, the side wall 52 of the cover 5 is smoothly guided by the inclined surface 3a1, and the cover 5
The engagement hole 52c can be easily guided to the engagement position with the engagement protrusion 3a.

Further, the end portion 43 b of the side wall 43 of the frame 4 on the irradiation light emitting side of the backlight unit 3 and the top plate 51 of the cover 5 are separated from each other, whereby the backlight of the engagement hole 52 c that is the engagement portion of the cover 5. The engagement of the unit 3 with the engagement protrusion 3a is facilitated, and the cover 5 can be easily attached to the frame 4. Further, the outer surface of the side wall 43 of the frame 4 and the side wall 5 of the cover 5
By abutting the inner side surface of 2, the stability of installation of the cover 5 can be improved and rattling can be prevented. Further, the distance between the opposing inner side surfaces 20a and 20a of the opposing substrate 20 is made to correspond to the distance between the fitting surfaces 45 and 45 opposing inside the frame 4, so that the inner side surface 2 of the opposing substrate 20
By fitting 0a and 20a between the fitting surfaces 45 and 45, the liquid crystal panel 2 can be easily positioned and attached to the frame 4.

[Electro-Optical Device of Second Embodiment]
Next, a liquid crystal device as an electro-optical device according to the second embodiment will be described. FIG. 7A is a partial side view showing the liquid crystal device of the second embodiment as the electro-optical device of the present invention, and FIG. 7B is a partial cross-sectional view corresponding to the CC cross section of FIG.

In the liquid crystal device 1 of the second embodiment, only the configuration of the engaging portion provided on the side wall 52 of the cover 5 and the engaging portion of the backlight unit 3 to which the engaging portion is engaged is the liquid crystal of the first embodiment. Device 1
The other is the same as the first embodiment. The engaging portion provided on the side wall 52 of the cover 5 of the second embodiment is a hook-like engaging claw 52 d formed by cutting and raising the end of the side wall 52, and on the side of the backlight unit 3. Is formed such that the engaging recess 3b, which is a step with which the engaging claw 52d is engaged, is cut out from the periphery on the side opposite to the support portion 44 side. When the cover 5 is attached to the frame 4 holding the liquid crystal panel 2 and the backlight unit 3, the side wall 52 is advanced from the liquid crystal panel 2 side with the front end of the side wall 52 facing the backlight unit 3. 52d is engaged and attached to the engaging recess 3b of the backlight unit 3. In addition, the engagement structure of the cover 5 and the backlight unit 3 is appropriate in addition to the first and second embodiments, and an engaging portion such as a convex portion or a claw is provided on one side, and a concave portion or a hole is provided on the other side. What is necessary is just to provide the acceptance part which receives an enrollment part.

According to the second embodiment, the cover 5 and the backlight unit 3 can be easily and reliably engaged, and the engagement and disengagement can be easily performed. In addition, the configuration corresponding to the first embodiment can provide the same effects as those of the first embodiment.

[Electro-Optical Device of Third Embodiment]
Next, a liquid crystal device as an electro-optical device according to a third embodiment will be described. FIG. 8A is a partial cross-sectional view corresponding to the BB cross section of FIG. 1 of the liquid crystal device of the third embodiment as the electro-optical device of the present invention, and FIG. 8B is the CC cross section of FIG. It is a fragmentary sectional view corresponding to.

The liquid crystal device 1 according to the third embodiment includes an inner surface of the top plate 51 of the cover 5 and a side wall 43 of the frame 4.
The backlight unit 3 is in contact with the end portion 43b on the irradiation light emitting side of the backlight unit 3 and is engaged with the cover 5 by the engagement of the engagement hole 52c and the engagement protrusion 3a. The other components are the same as those of the first embodiment. The cover 5 of the present embodiment preferably has springiness and elasticity in order to facilitate the engagement of the engagement hole 52c with the engagement protrusion 3a. The engagement structure between the cover 5 and the backlight unit 3 is appropriate as in the first and second embodiments. According to the third embodiment, the backlight unit 3 can be stably installed at a predetermined position of the frame 4. In addition, the configuration corresponding to the first embodiment can provide the same effects as those of the first embodiment.

[Electro-Optical Device of Fourth Embodiment]
Next, a liquid crystal device as an electro-optical device according to the fourth embodiment will be described. FIG. 9A is a partial cross-sectional view corresponding to the BB cross section of FIG. 1 of the liquid crystal device of the fourth embodiment as the electro-optical device of the present invention, and FIG. 9B is the CC cross section of FIG. It is a fragmentary sectional view corresponding to.

In the liquid crystal device 1 of the fourth embodiment, the inner surface of the top plate 51 of the cover 5 is the polarizing plate 1 of the liquid crystal panel 2.
1, the cover 5 biases the liquid crystal panel 2 toward the frame 4, and the other configuration is the same as that of the third embodiment. In the present embodiment, the top plate 51 of the cover 5 is the liquid crystal panel 2.
The polarizing plate 11 is energized, but a configuration in which the substrate such as the element substrate 10 is directly energized may be employed. According to the fourth embodiment, the liquid crystal panel 2 can be stably installed at a predetermined position of the frame 4 and the same effect as that of the third embodiment can be obtained.

[Modifications of Embodiment, etc.]
The present invention is not limited to the above-described embodiment, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are also included in the present invention. For example, in the above-described embodiment, the present invention is applied to a liquid crystal device as an electro-optical device, and an active matrix liquid crystal panel is used as an electro-optical panel. However, a passive matrix liquid crystal panel is used as an example. In addition, the present invention is not limited to the liquid crystal panel, and may be an electro-optical device using other various electro-optical panels.

In addition, the electro-optical device of the present invention can be used as a display unit or the like of various electronic devices. FIG. 10 shows an example thereof, in which the liquid crystal device 1 according to the embodiment is used as an electric viewfinder (EVF) in a digital camera 70 as the electronic apparatus 7. In the figure, 71 is an image display monitor, 72 is a shutter button, 73 is a dial switch, and 74.
Is a power button.

The electronic apparatus using the electro-optical device according to the present invention is not limited to the digital camera 70 and can be applied to other various electronic apparatuses. For example, a mobile phone or PDA (Personal Dig
Ital Assistants), portable information devices, portable personal computers, personal computers, workstations, digital still cameras, in-vehicle monitors, digital video cameras, LCD TVs, viewfinder types, direct-view type video tape recorders, car navigation systems The present invention can also be widely used in electronic devices such as devices, pagers, electronic notebooks, calculators, word processors, workstations, video phones, and POS terminals.

(A) is a top view which shows the liquid crystal device as an electro-optical device of 1st Embodiment of this invention, (b) is the side view. AA sectional drawing in FIG. BB sectional drawing in FIG. CC sectional drawing in FIG. (A) is a top view which shows an example of the specific structure of the liquid crystal panel as an electro-optical panel, (b) is aa sectional drawing in (a). (A) is explanatory drawing explaining the process of attaching a liquid crystal panel and a backlight unit to a flame | frame, (b) is explanatory drawing explaining the process of attaching a cover to the frame holding a liquid crystal panel and a backlight unit. FIG. 4A is a partial side view showing a liquid crystal device according to a second embodiment as an electro-optical device of the invention, and FIG. 4B is a partial cross-sectional view corresponding to the CC cross section of FIG. (A) is a partial cross-sectional view corresponding to the BB cross section of FIG. 1 of the liquid crystal device of the third embodiment as the electro-optical device of the present invention, and (b) is a portion corresponding to the CC cross section of FIG. Sectional drawing. (A) is a partial cross-sectional view corresponding to the BB cross section of FIG. 1 of the liquid crystal device of the fourth embodiment as the electro-optical device of the present invention, and (b) is a portion corresponding to the CC cross section of FIG. Sectional drawing. FIG. 3 is a rear view of a digital camera as an electronic apparatus using a liquid crystal device as an electro-optical device according to the invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Liquid crystal device (electro-optical device) 2 ... Liquid crystal panel (electro-optical panel) 2A ... Pixel area | region (image display area) 3 ... Backlight unit 3a ... Engagement protrusion 3a1 ... Inclined surface 3b ... Engagement recessed part 31 ... Double-sided adhesion Tape 4 ... Frame 4a, 4b ... Recess 41, 42, 43 ...
Side wall 41a, 42a ... Projection 41b, 41c ... Recess 43a ... Overhang 43b ... End 44 ... Support 44a ... Opening 44b ... Adhesive reservoir 45 ... Fitting surface 5 ... Cover (light shielding member) 51 ... Top plate 51a ... Window part 52 ... Side wall 52a ... Recessed part 52b ... Projection part 5
2c ... engaging hole 52d ... engaging claw 6 ... mounting case 7 ... electronic device 70 ... digital camera 71 ... image display monitor 72 ... shutter button 73 ... dial switch 74 ... power button 10 ... element substrate 11 ... polarizing plate 12 ... pixel Electrode 13 ... Alignment film 14 ... Data line drive circuit 15 ... External circuit connection terminal 16 ... Scanning line drive circuit 17 ... Wiring 18 ... Vertical conduction material 19 ... Vertical conduction terminal 20 ... Counter substrate 20a ... Inner side surface 21 ... Polarizing plate 22 ...
Counter electrode 23 ... Alignment film 24 ... Sealing material 24a ... Liquid crystal injection port 24b ... Sealing material 25
... Light shielding film 26, 27 ... Flexible printed wiring board 30 ... Liquid crystal layer

Claims (10)

An electro-optical panel having a pixel region composed of a plurality of pixels and a peripheral region provided around the pixel region;
A backlight unit disposed to face the electro-optical panel;
A frame for holding the electro-optical panel and the backlight unit;
A window having an opening corresponding to the pixel region of the electro-optical panel, and a cover that covers the peripheral region;
An electro-optical device, wherein an engagement portion for engaging with the backlight unit is provided on a side wall of the cover. An engagement hole is formed on the side wall of the cover as the engagement portion,
The backlight unit is provided with an engaging protrusion protruding laterally,
The electro-optical device according to claim 1, wherein the cover is installed by engaging the engagement hole and the engagement protrusion. The engaging protrusion has a first surface formed on the electro-optical panel side, and a second surface formed on the opposite side to the electro-optical panel side,
The electro-optical device according to claim 2, wherein the first surface is an inclined surface that is inclined in a direction away from the electro-optical panel. An engagement claw is provided as the engagement portion at the end of the side wall of the cover,
An engagement recess is provided on the side of the backlight unit,
The electro-optical device according to claim 1, wherein the cover is installed by engaging the engagement claw and the engagement recess. The electro-optical device according to claim 1, wherein the backlight unit biases the backlight unit toward the frame by the cover. 6. The electro-optical device according to claim 5, wherein the electro-optical panel is urged toward the frame by the cover. 5. The electro-optical device according to claim 1, wherein an end of a side wall of the frame on an emission light emission side from the backlight unit and the cover are separated from each other. The side portion of the side wall of the frame and the cover are in contact with each other.
The electro-optical device according to claim 7. The electro-optical panel comprises a pair of substrates,
The distance between one side surface of one of the pair of substrates and the side surface facing the one side surface of the one substrate corresponds to the distance between the opposing surfaces on the inner side of the frame. The electro-optical device according to claim 1.   An electronic apparatus comprising the electro-optical device according to claim 1.

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