JP2010217770A - Electrooptical device and electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electrooptical device and electronic equipment in which insufficiency of sticking strength of a cover member for a casing can be prevented. <P>SOLUTION: In the electrooptical device 1, the casing 30 has a housing part 33 housing an electrooptical panel 10 and a side wall part 32 provided at the side of the housing part 33 and having a sticking plane 32b to which the cover member 40 is stuck. Also, the back of the cover member 40 has a first region 43 to which a whole display surface 11 of the electrooptical panel 10 is stuck, and a second region 44 positioned at the outer edge of the first region 43. Further, a transparent adhesive layer 50 is provided at the whole first region 43 and a region including at least a part of the second region 44 in the back of the cover member 40. Also, the second region 44 is stuck to a sticking plane 32b by the transparent adhesive layer 50 provided at least one part of the second region 44. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an electro-optical device and an electronic apparatus including the electro-optical device.

Conventionally, in an electro-optical device such as a liquid crystal display device, a configuration in which a display surface of an electro-optical panel and a light-transmissive cover member for protecting the display surface are bonded to each other by a transparent adhesive layer is known. (For example, refer to Patent Document 1).
When the electro-optical device is configured by installing such an electro-optical panel in the casing, the cover member is fixed to the casing by bonding the cover member and the casing to each other with a double-sided tape or the like. .

FIG. 7 is a cross-sectional view illustrating a schematic configuration of a conventional electro-optical device.
Specifically, as shown in FIG. 7, in the conventional electro-optical device 100, the cover member 140 is formed larger than the electro-optical panel 110. In addition, on the back surface of the cover member 140, a first region 141 to which the display surface of the electro-optical panel 110 is attached and a second region 142 located on the outer edge of the first region 141 are provided. Then, the display surface of the electro-optical panel 110 is attached to the first region 141 with the transparent adhesive layer 150. Thereafter, the double-sided tape 160 is attached to the second region 142, and the cover member 140 is attached to the housing 130 to which the backlight unit 120 is fixed by the double-sided tape 160.

JP 2009-37182 A

Here, in recent years, miniaturization is required in electro-optical devices. Further, in the electro-optical device, it is required to configure a display area by the electro-optical panel as wide as possible.
Therefore, in the conventional electro-optical device 100, the cover member 140 cannot be formed so large as to the electro-optical panel 110, and it is difficult to secure a sufficient area of the second region 142.

Further, in the electro-optical device 100, it is necessary to consider a pasting tolerance when the double-sided tape 160 is pasted on the second region 142. Therefore, in the electro-optical device 100, the double-sided tape 160 cannot be provided in the second region 142 up to the end of the first region 141 where the transparent adhesive layer 150 is provided. That is, as shown in FIG. 7, in the electro-optical device 100, a gap between the pasting tolerances between the double-sided tape 160 provided in the second region 142 and the transparent adhesive layer 150 provided in the first region 141. n is generated.
Therefore, in the said prior art, the sticking area of the cover member with respect to a housing | casing becomes inadequate, and the sticking strength of the cover member with respect to a housing | casing may become inadequate.
An object of the present invention is to provide an electro-optical device and an electronic device that can prevent the adhesive strength of the cover member from being insufficient with respect to the housing and can more securely fix the cover member to the housing. Is to provide equipment.

  In order to solve the above problems, an electro-optical device according to a first invention includes an electro-optical panel, a cover member disposed on the display surface side of the electro-optical panel, and a display of the electro-optical panel on the back surface of the cover member. An electro-optical device comprising a transparent adhesive layer for attaching a surface and a housing for housing an electro-optical panel, the housing being provided on a side of the housing portion and a housing portion for housing the electro-optical panel A side wall portion having a pasting surface to which the cover member is pasted, and the back surface of the cover member is a first region to which the entire display surface of the electro-optical panel is pasted and an outer edge of the first region And the transparent adhesive layer is provided in a region including the entire first region and at least a part of the second region on the back surface of the cover member. A transparent adhesive layer provided on at least a part of Second region is characterized in that attached to the attaching surface.

In the electro-optical device according to the first invention, the back surface of the cover member is a first region where the entire display surface of the electro-optical panel is attached, a second region located at the outer edge of the first region, have. Moreover, the transparent adhesive layer is provided in the area | region including the whole 1st area | region and at least one part of a 2nd area | region in the back surface of a cover member. And the 2nd area | region is affixed on the sticking surface by the transparent contact bonding layer provided in at least one part of the 2nd area | region.
That is, in the electro-optical device according to the first aspect of the invention, the transparent adhesive layer for attaching the display surface of the electro-optical panel to the back surface of the cover member is provided to extend to the second region on the back surface of the cover member. And the cover member is affixed on the housing | casing by this transparent adhesive layer provided by extension.

As a result, the three members of the cover member, the electro-optical panel, and the casing can be bonded with the same transparent adhesive layer, and the double-sided tape for bonding the casing and the cover member can be eliminated.
Therefore, according to the electro-optical device according to the first invention, unlike the case where the cover member is attached to the housing by the double-sided tape, it is not necessary to consider the tolerance when the double-sided tape is attached to the second region. In the second region, it is possible to ensure a wide attachment area to be attached to the housing.

In addition, according to the electro-optical device according to the first aspect of the invention, unlike the case where the cover member is attached to the housing with the double-sided tape, there is no problem such as an overlap between the double-sided tape and the transparent adhesive layer, so that the fixing strength by adhesion Can be secured sufficiently.
Therefore, according to the electro-optical device according to the first aspect of the present invention, it is possible to prevent the cover member from being attached to the housing with insufficient strength, and more reliably fix the cover member to the housing. It becomes possible.
In addition, according to the electro-optical device according to the first invention, the number of components can be reduced and the manufacturing cost can be reduced as compared with the case where the cover member is attached to the housing by the double-sided tape. .

Here, since the transparent adhesive layer does not have a substrate, it can be formed thinner than a double-sided tape. Therefore, according to the electro-optical device according to the first aspect of the invention, it is possible to reduce the thickness as compared with the case where the cover member is attached to the housing by the double-sided tape.
Here, the electro-optical device corresponds to, for example, an electro-optical device 1 described later. For example, a liquid crystal panel 10 described later corresponds to the electro-optical panel. For example, the display surface 11 described later corresponds to the display surface. As the cover member, for example, a protective cover 40 described later is applicable. For example, the transparent adhesive layer 50 described later corresponds to the transparent adhesive layer. For example, a case 30 described later corresponds to the case. For example, the storage unit 33 described later corresponds to the storage unit. As the pasting surface, for example, a pasting surface 32b described later corresponds. For example, the side wall 32 described later corresponds to the side wall portion. As the first region, for example, a first region 43 described later corresponds. As the second region, for example, a second region 44 described later corresponds.

An electro-optical device according to the second invention is the electro-optical device according to the first invention, wherein the cover member includes a touch panel.
According to the electro-optical device according to the second aspect of the present invention, it is possible to prevent the adhesive strength of the cover member including the touch panel with respect to the housing from becoming insufficient, and more reliably to the housing. The cover member can be fixed.
Further, the electro-optical device according to the third invention is the electro-optical device according to the second invention, wherein the touch panel has a circuit board for deriving a signal from the touch panel, and the transparent adhesive layer is formed on the back surface of the touch panel. The circuit board is provided in an area avoiding the circuit board.

According to the electro-optical device according to the third aspect of the invention, it is possible to suppress the circuit board of the touch panel from being corroded by the transparent adhesive layer.
An electro-optical device according to a fourth aspect is the electro-optical device according to any one of the first to third aspects, wherein the electro-optical panel is a substrate on which a drive circuit for driving the electro-optical panel is formed. The transparent adhesive layer is provided in a region away from the substrate on the back surface of the cover member.
According to the electro-optical device according to the fourth aspect of the invention, the substrate of the electro-optical panel can be prevented from being corroded by the transparent adhesive layer.
Here, for example, an FPC board 12 described later corresponds to the board.

An electro-optical device according to a fifth invention is the electro-optical device according to any one of the first to fourth inventions, wherein the transparent adhesive layer extends to a side surface of the cover member. .
According to the electro-optical device according to the fifth aspect of the present invention, it is possible to secure a wider attachment area to be attached to the housing in the cover member.
An electro-optical device according to a sixth invention is the electro-optical device according to the first or second invention, wherein the second region is provided around the first region, and the transparent adhesive layer is formed by the cover member. It is provided in the substantially whole area | region of the back surface of this.

According to the electro-optical device according to the sixth aspect of the invention, it is possible to secure a wider attachment area to be attached to the housing on the back surface of the cover member.
Furthermore, an electronic apparatus according to a seventh invention includes the electro-optical device according to any one of the first to sixth inventions.
According to the electronic apparatus according to the seventh aspect of the present invention, in the electro-optical device, it is possible to prevent the adhesive strength of the cover member from being insufficient with respect to the housing, and to more reliably cover the housing with respect to the housing. Can be fixed.

1 is a cross-sectional view illustrating a schematic configuration of an electro-optical device according to an embodiment of the invention. FIG. 2 is a perspective view illustrating a schematic configuration of a protective cover, a transparent adhesive layer, and a liquid crystal panel provided in the electro-optical device illustrated in FIG. 1. It is a reverse view of the protective cover shown in FIG. It is a back view which shows the state which affixed the liquid crystal panel on the protective cover. It is a figure which shows the procedure at the time of installing a protective cover and a liquid crystal panel in a housing | casing. FIG. 10 is a schematic diagram illustrating an example in which the electro-optical device according to the embodiment of the invention is applied to a mobile phone as an electronic apparatus. It is sectional drawing which shows schematic structure of the conventional electro-optical apparatus.

Hereinafter, embodiments of an electro-optical device and an electronic apparatus to which the present invention is applied will be described with reference to the drawings.
(Constitution)
FIG. 1 is a sectional view showing a schematic structure of an electro-optical device according to an embodiment of the invention. FIG. 2 is a perspective view illustrating a schematic configuration of a protective cover, a transparent adhesive layer, and a liquid crystal panel included in the electro-optical device illustrated in FIG. 1. FIG. 3 is a back view of the protective cover shown in FIG. FIG. 4 is a back view showing a state in which the liquid crystal panel is attached to the protective cover.

Hereinafter, a case where a liquid crystal device is configured as the electro-optical device 1 will be described as an example.
The electro-optical device 1 illustrated in FIG. 1 includes a liquid crystal panel 10, a backlight unit 20, a housing 30, a protective cover 40, and a transparent adhesive layer 50.
The liquid crystal panel 10 includes an upper polarizing plate, a liquid crystal cell, a lower polarizing plate, and the like. The upper polarizing plate is installed on the display surface side of the liquid crystal cell and transmits light having a specific polarization direction. The liquid crystal cell has a structure in which an element substrate on which a pixel electrode is formed and a counter substrate on which a common electrode is formed are bonded to each other, and liquid crystal is sealed between the substrates by a sealing agent. The lower polarizing plate is installed on the back side of the liquid crystal cell (the side facing the backlight unit 20), and transmits light having a specific polarization direction. In the liquid crystal panel 10 shown in FIG. 1, the upper surface (the upper surface of the upper polarizing plate) is the display surface 11.

As shown in FIG. 2, the liquid crystal panel 10 includes an FPC board 12 provided with a drive circuit for driving the liquid crystal. The liquid crystal panel 10 displays an image when an external control signal is input to the drive circuit.
The backlight unit 20 includes a reflection sheet, a light guide plate, a scattering plate, a prism sheet, and the like. The backlight unit 20 irradiates the back surface of the liquid crystal panel 10 with light.
As shown in FIG. 1, the housing 30 has a bottom plate 31 and four side walls 32, and is formed in a box shape whose upper side is open. In the housing 30, a portion surrounded by the bottom plate 31 and the four side walls 32 is a housing portion 33 that houses the liquid crystal panel 10 and the backlight unit 20.
A stepped portion 32 a that protrudes inward from the upper portion is formed at the lower portion of each side wall 32. And the sticking surface 32b on which the cover 40 is stuck is formed in the upper surface of the level | step-difference part 32a.

As shown in FIGS. 1 and 2, the protective cover 40 is disposed on the display surface 11 side of the liquid crystal panel 10. The protective cover 40 is attached to the display surface 11 of the liquid crystal panel 10 via the transparent adhesive layer 50. Thereby, the protective cover 40 protects the display surface 11 of the liquid crystal panel 10. The protective cover 40 is formed of glass, resin, or the like. As shown in FIGS. 2 and 3, the protective cover 40 includes a transparent portion 41 that transmits light, and a light shielding portion 42 that is formed around the transparent portion 41 and blocks light. The transparent portion 41 is formed to have substantially the same size as the display surface 11 of the liquid crystal panel 10.
As shown in FIG. 3, the back surface of the protective cover 40 includes a first region 43 to which the entire display surface 11 of the liquid crystal panel 10 is attached, and a second region 44 located on the outer edge of the first region 43. have. In the present embodiment, the first region 43 coincides with the transparent portion 41. In addition, the second region 44 coincides with the light shielding portion 42. That is, the second area 44 is provided around the first area 43.

The transparent adhesive layer 50 is formed of a transparent adhesive such as an acrylic adhesive. In this case, the transparent adhesive includes a transparent adhesive. The transparent adhesive layer 50 is configured by attaching a transparent adhesive sheet 55 (see FIG. 5) to the back surface of the protective cover 40. Here, the transparent adhesive sheet 55 refers to a sheet obtained by processing a transparent adhesive into a sheet shape. As shown in FIG. 2, the transparent adhesive layer 50 is provided with a notch 46 corresponding to the position where the FPC board 12 of the liquid crystal panel 10 is formed in a state where the liquid crystal panel 10 is attached to the protective cover 40. It has been.
When housing the liquid crystal panel 10 and the backlight unit 20 in the housing 30, first, as shown in FIG. 1, the backlight unit 20 is fixed to the bottom surface of the housing portion 33 of the housing 30. At this time, the backlight unit 20 is fixed to the bottom surface of the housing portion 33 with a double-sided tape or the like.

  Next, as shown in FIG. 4, the liquid crystal panel 10 is fixed to the back surface of the protective cover 40. For this, first, the transparent adhesive sheet 55 is attached to the back surface of the protective cover 40. Thereby, the transparent adhesive layer 50 is formed in the first region 43 and the second region 44 on the back surface of the protective cover 40. In the present embodiment, the transparent adhesive layer 50 is provided on the entire first region 43 and the second region 44 on the back surface of the protective cover 40. However, the transparent adhesive layer 50 is provided with a notch 46 corresponding to the position where the FPC board 12 of the liquid crystal panel 10 is formed in a state where the liquid crystal panel 10 is adhered to the protective cover 40.

  Then, the entire display surface 11 of the liquid crystal panel 10 is attached to the first region 43 by the transparent adhesive layer 50 provided in the first region 43 on the back surface of the protective cover 40. Thereby, the display surface of the liquid crystal panel 10 is protected by the transparent adhesive layer 50 and the protective cover 40. The transparent adhesive layer 50 is provided with a notch 46 corresponding to the position where the FPC board 12 of the liquid crystal panel 10 is formed in a state where the liquid crystal panel 10 is adhered to the protective cover 40. That is, the transparent adhesive layer 50 is provided in a region away from the FPC board 12 on the back surface of the protective cover 40. As a result, the FPC board 12 can be prevented from being corroded by the transparent adhesive layer 50.

Further, the protective cover 40 having the liquid crystal panel 10 attached thereto is fixed to the housing 30 to which the backlight unit 20 is fixed. As shown in FIG. 1, the liquid crystal panel 10 attached to the protective cover 40 is provided in the second region 44 on the back surface of the protective cover 40 in a state where the liquid crystal panel 10 is accommodated in the accommodating portion 33 of the housing 30. The second region 44 is attached to the attaching surface 32 b of the stepped portion 32 a of the housing 40 by the transparent adhesive layer 50.
That is, in the electro-optical device 1, the transparent adhesive layer 50 for attaching the display surface 11 of the liquid crystal panel 10 to the back surface of the protective cover 40 is provided to extend to the second region 44 on the back surface of the protective cover 40. And the protective cover 40 is affixed on the housing | casing 30 by this transparent adhesive layer 50 provided in extension.

As a result, as shown in FIG. 1, in the electro-optical device 1, the protective cover 40, the liquid crystal panel 10, and the housing 30 can be bonded together with the same transparent adhesive layer 50. It is possible to eliminate the double-sided tape that bonds the cover 40. Therefore, according to the electro-optical device 1, the number of parts can be reduced and the manufacturing cost can be reduced as compared with an electro-optical device that requires a double-sided tape.
Further, since the electro-optical device 1 does not require a double-sided tape for attaching the protective cover 40 to the housing 30, it is not necessary to consider the attachment tolerance when the double-sided tape is attached to the second region 44. Therefore, in the electro-optical device 1, it is possible to secure a wide attachment area to be attached to the housing 30 in the second region 44 as compared with the case where the protective cover 40 is attached to the housing 30 using the double-sided tape. it can.

Further, in the electro-optical device 1, unlike the case where the protective cover 40 is attached to the housing 30 with the double-sided tape, there is no problem such as an overlap between the double-sided tape and the transparent adhesive layer 50. It can be secured.
Therefore, according to the electro-optical device 1, it is possible to prevent the adhesion strength of the protective cover 40 to the housing 30 from being insufficient, and to fix the protective cover 40 to the housing 30 more reliably. Is possible.
Here, since the transparent adhesive layer 50 does not have a base material, it can be formed thinner than a double-sided tape. Therefore, according to the electro-optical device 1, the thickness can be reduced as compared with the case where the protective cover 40 is attached to the housing 30 with the double-sided tape.

Next, the procedure for installing the protective cover 40 and the liquid crystal panel 10 in the housing 30 will be described more specifically.
In the following, it is assumed that the backlight unit 20 is already fixed to the housing 30.
FIG. 5 is a diagram illustrating a procedure when the protective cover and the liquid crystal panel are installed in the housing.
When the protective cover 40 and the liquid crystal panel 10 are installed in the housing 30, first, the transparent adhesive layer 50 is provided on the back surface of the protective cover 40.
Here, release paper is provided on both sides of the transparent adhesive sheet 55 for providing the transparent adhesive layer 50 on the back surface of the protective cover 40.

Then, as shown in FIG. 5A, the release paper provided on one surface of both surfaces of the transparent adhesive sheet 55 is peeled off, and the one surface is attached to the back surface of the protective cover 40. At this time, the release paper 56 provided on the other surface of both surfaces of the transparent adhesive sheet 55 is attached to the transparent adhesive sheet 55.
Here, as shown in FIG. 5A, the release paper 56 provided on the other surface of the transparent adhesive sheet 55 is a first release portion corresponding to the entire first region 43 of the protective cover 40. 56 a and a second peeling portion 56 b corresponding to the second region 44 of the protective cover 40. The transparent adhesive sheet 55 is provided with a notch 46 corresponding to the position where the FPC board 12 of the liquid crystal panel 10 is formed in a state where the liquid crystal panel 10 is adhered to the protective cover 40.

  And as shown in FIG.5 (b), about the transparent adhesive sheet 55 affixed on the back surface of the protective cover 40, the 1st peeling part 56a provided in the other surface is peeled. Thereby, the transparent adhesive layer 50 is provided in the first region 43 on the back surface of the protective cover 40. At this time, the second peeling portion 56 b provided on the other surface of the transparent adhesive sheet 55 is attached to the transparent adhesive sheet 55.

Next, as shown in FIG. 5C, the display surface 11 of the liquid crystal panel 10 is attached to the first region 43 on the back surface of the protective cover 40 provided with the transparent adhesive layer 50.
And as shown in FIG.5 (d), about the transparent adhesive sheet 55 affixed on the back surface of the protective cover 40, the 2nd peeling part 56b provided in the other surface is peeled. Thereby, the transparent adhesive layer 50 is provided in the second region 44 on the back surface of the protective cover 40.

Thereafter, in a state where the liquid crystal panel 10 attached to the protective cover 40 is accommodated in the accommodating portion 33 of the housing 30, the second adhesive layer 50 provided in the second region 44 on the back surface of the protective cover 40 causes the second The region 44 is affixed to the affixing surface 32 b of the stepped portion 32 a of the housing 40.
Thereby, installation to the housing | casing 30 of the protective cover 40 and the liquid crystal panel 10 is completed.
According to the above procedure, the electro-optical device 1 does not require a step of attaching a double-sided tape to the back surface of the protective cover 40. Therefore, compared to the case where the protective cover 40 is attached to the housing 30 with the double-sided tape, the electro-optical device. 1 can be easily manufactured.

(Application examples)
In the above embodiment, the case where a liquid crystal device including the liquid crystal panel 10 is configured as the electro-optical device 1 has been described as an example. However, the electro-optical device 1 may be configured as an input device including a touch panel. In this case, the surface on the input unit side of the touch panel is attached to the first region 43 by the transparent adhesive layer 50 provided in the first region 43 on the back surface of the protective cover 40. Then, the second region 44 is attached to the attachment surface 32 b of the stepped portion 32 a of the housing 40 by the transparent adhesive layer 50 provided in the second region 44 on the back surface of the protective cover 40. Further, the electro-optical device 1 may be configured as a liquid crystal device including a touch panel and the liquid crystal panel 10.

  In the above embodiment, the transparent adhesive layer 50 has the notch 46 corresponding to the position where the FPC board 12 of the liquid crystal panel 10 is formed in the state where the liquid crystal panel 10 is adhered to the protective cover 40. Is provided. However, the transparent adhesive layer 50 may be provided on the entire back surface of the protective cover 40 without providing the notch 46. Thereby, it is possible to secure a wider attachment area to be attached to the housing 30 on the back surface of the protective cover 40.

  Moreover, in the said embodiment, the cover member is comprised only from the protective cover 40 formed with glass, resin, etc. However, the cover member may be configured to include a touch panel. For example, the cover member may be configured only from the touch panel. Alternatively, the cover member may be constituted by a protective cover 40 and a touch panel disposed on the back side of the protective cover 40. In this case, the touch panel is disposed on the display surface 11 side of the liquid crystal panel 10. Further, the back surface of the touch panel has a first region where the entire display surface 11 of the liquid crystal panel 10 is attached, and a second region located at the outer edge of the first region. And the whole display surface 11 of the liquid crystal panel 10 is affixed on the 1st area | region with the transparent contact bonding layer 50 provided in the 1st area | region of the back surface of the touch panel. Further, the liquid crystal panel 10 attached to the touch panel is housed in the housing portion 33 of the housing 30, and the second region is placed in the housing by the transparent adhesive layer 50 provided in the second region on the back surface of the touch panel. It affixes on the affixing surface 32b of 40 level | step-difference parts 32a. Here, the touch panel has a circuit board for deriving a signal from the touch panel. Therefore, in the state where the liquid crystal panel 10 is attached to the touch panel, the transparent adhesive layer 50 may be provided with a notch corresponding to the position where the circuit board of the touch panel is formed. That is, you may provide the transparent contact bonding layer 50 in the area | region which avoided the circuit board of the touch panel in the back surface of a touch panel. Thereby, it is possible to prevent the circuit board of the touch panel from being corroded by the transparent adhesive layer 50. Further, in the state where the liquid crystal panel 10 is attached to the touch panel on the transparent adhesive layer 50, the notch 46 may be provided corresponding to the position where the FPC board 12 of the liquid crystal panel 10 is formed. That is, the transparent adhesive layer 50 may be provided in a region away from the circuit board of the touch panel and the FPC board 12 on the back surface of the touch panel.

In the above embodiment, the second region 44 is provided around the first region 43. However, for example, the second region 44 may be provided only on the outer edge on one side of both end portions in the front-rear direction (vertical direction in FIG. 3) of the first region 43 on the back surface of the protective cover 40. I do not care. In this case, it is preferable to provide a fitting claw portion that fits into a recess provided on the side surface of the housing 30 at the other end portion in the front-rear direction of the protective cover 40 (the end portion on the FPC board 12 side).
Further, in the above-described embodiment, the transparent adhesive layer 50 is provided in substantially the entire area of the second region 44 on the back surface of the protective cover 40 except for the notch portion 46. However, the transparent adhesive layer 50 may be provided in a part of the second region 44.

In the above embodiment, the transparent adhesive layer 50 is provided on the back surface of the protective cover 40. However, the transparent adhesive layer 50 may extend to the side surface of the protective cover 40 by forming the transparent adhesive layer 50 larger than the protective cover 40. Thereby, in the protective cover 40, it is possible to secure a wider attachment area to be attached to the housing 30.
In the above embodiment, the transparent adhesive layer 50 is formed to have a uniform thickness on the back surface of the protective cover 40 through the first region 43 and the second region 44. However, the transparent adhesive layer 50 may be formed so that the portion provided in the second region 44 is thicker than the portion provided in the first region 43. Thereby, it becomes possible to improve the adhesive force of the 2nd area | region 44 of the back surface of the protective cover 40 with respect to the housing | casing 30. FIG.

Furthermore, in the said embodiment, you may give the process which increases a surface area in the sticking surface 32b of the side wall 32 of the housing | casing 30. FIG. Specifically, a recess such as a groove is formed on the sticking surface 32 b of the side wall 32 of the housing 30. Thereby, it becomes possible to improve the adhesive force of the 2nd area | region 44 of the back surface of the protective cover 40 with respect to the housing | casing 30. FIG.
Here, the electro-optical device 1 according to the above embodiment can be applied to various electronic apparatuses.
FIG. 6 is a schematic diagram illustrating an example in which the electro-optical device 1 is applied to a mobile phone as an electronic device.
As an electronic apparatus to which the electro-optical device 1 is applied, in addition to the mobile phone shown in FIG. 6, for example, a personal computer, an information portable terminal, a digital still camera, a liquid crystal television, a viewfinder type, a monitor direct view type video tape recorder, a car Examples include navigation devices, pagers, electronic notebooks, calculators, word processors, workstations, videophones, POS terminals, and devices equipped with touch panels.

DESCRIPTION OF SYMBOLS 1 Electro-optical device, 10 Liquid crystal panel (electro-optical panel), 11 Display surface, 40 Protective cover (cover member), 50 Transparent adhesive layer, 30 Housing | casing, 33 Storage part, 32b Affixing surface, 32 side wall (side wall part), 43 1st area | region, 44 2nd area | region, 12 FPC board | substrate (board | substrate).

Claims (7)

An electro-optic panel;
A cover member disposed on the display surface side of the electro-optical panel;
A transparent adhesive layer for attaching the display surface of the electro-optical panel to the back surface of the cover member;
A housing that houses the electro-optic panel, and an electro-optic device comprising:
The housing includes a housing portion that houses the electro-optic panel, and a side wall portion that is provided on a side of the housing portion and has a pasting surface to which the cover member is attached.
The back surface of the cover member has a first region to which the entire display surface of the electro-optical panel is attached, and a second region located at the outer edge of the first region,
The transparent adhesive layer is provided in a region including the entire first region and at least a part of the second region on the back surface of the cover member;
The electro-optical device, wherein the second region is attached to the attachment surface by a transparent adhesive layer provided on at least a part of the second region.   The electro-optical device according to claim 1, wherein the cover member includes a touch panel. The touch panel has a circuit board for deriving a signal from the touch panel,
The electro-optical device according to claim 2, wherein the transparent adhesive layer is provided in a region away from the circuit board on a back surface of the touch panel. The electro-optical panel has a substrate on which a drive circuit for driving the electro-optical panel is formed,
4. The electro-optical device according to claim 1, wherein the transparent adhesive layer is provided in a region away from the substrate on the back surface of the cover member. 5.   The electro-optical device according to claim 1, wherein the transparent adhesive layer extends to a side surface of the cover member. The second region is provided around the first region,
The electro-optical device according to claim 1, wherein the transparent adhesive layer is provided in a substantially entire region of the back surface of the cover member.   An electronic apparatus comprising the electro-optical device according to claim 1.

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