JP2005099616A - Electrooptic device and its manufacturing method, and electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electrooptic device in which an electrooptical panel is prevented from breaking (cracking) owing to fall, and provide its manufacturing method, and electronic equipment. <P>SOLUTION: A frame is positioned by making a plurality of cut parts of the frame abut against pins on a fixture. Then a liquid crystal display panel is positioned at a prescribed position on the frame by using the pins. Then the liquid crystal display panel which has been positioned is fixed to the frame by using a both-sided tape. Thus, a structure is manufactured having the frame, a light guide plate, and the liquid crystal display panel integrated into one body. Then the structure is taken out of the fixture and the FPC of the structure is folded back several times to form a liquid crystal display device. The manufactured liquid crystal display device is fitted to a substrate in electronic equipment and housed while engaged with an upper case and a lower case. Thus, the electronic equipment is manufactured. Consequently, end surfaces of the four sides of the liquid crystal panel are exposed above the frame and the four sides of the peripheral edges of the liquid crystal display panel are held by a gasket of the upper frame. The liquid crystal display panel is therefore prevented from breaking (cracking) owing to a fall. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

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

  In recent years, electro-optical devices such as liquid crystal display devices are widely used in electronic devices such as mobile phones. Generally, a liquid crystal display device mounted on a portable electronic device is a flexible printed circuit board on which a liquid crystal display panel, a circuit for generating a signal for driving the liquid crystal display panel, and various electronic components are mounted. Circuit; hereinafter referred to as “FPC”), a light guide plate and a frame.

  For example, the liquid crystal display panel, the FPC, the light guide plate, and the frame, which are constituent elements of the liquid crystal display device, are assembled as follows. That is, first, the liquid crystal display panel and the FPC are electrically connected, and then the liquid crystal display panel and the light guide plate electrically connected to the FPC are fixed to the frame with double-sided tape while being fitted into the frame. At this time, the external dimensions of the liquid crystal display panel are formed slightly smaller than the external dimensions of the inner wall of the frame, and the liquid crystal display panel is fitted into the frame. Thereby, the liquid crystal display panel is held in the frame in a state where the end surfaces of the four sides are pressed against the inner wall of the frame. Thus, the liquid crystal display panel, FPC, light guide plate, and frame are integrated.

  Further, as an example of a liquid crystal display device in which a liquid crystal display panel, a substrate corresponding to an FPC, a light guide plate, and a frame are integrated, for example, the side surfaces of the four sides of the light guide plate are positioned by the inner wall of the backlight component storage frame. In addition, a liquid crystal display device is known in which four side surfaces of a liquid crystal panel connected to a drive circuit board are positioned by an inner wall of a liquid crystal panel housing frame (see, for example, Patent Document 1).

  According to Patent Document 1, in particular, the liquid crystal panel is fixed to the liquid crystal panel housing frame with double-sided tape, and the liquid crystal panel is held on the liquid crystal panel housing frame by flat claws.

  In the liquid crystal display device according to Patent Document 1, since the four side surfaces of the liquid crystal panel are fixed to the inner wall of the liquid crystal panel storage frame, when an electronic device equipped with such a liquid crystal display device falls, the impact of the drop Therefore, the four side surfaces of the liquid crystal panel may interfere with the inner wall of the liquid crystal panel storage frame, and the liquid crystal panel may be damaged. In particular, since the liquid crystal panel is held by flat claws, an impact at the time of dropping easily acts on the portion of the liquid crystal panel held by the claws, which may damage the liquid crystal panel.

Japanese Patent Laid-Open No. 11-337939

  The present invention has been made in view of the above points, and it is an object of the present invention to provide an electro-optical device that can prevent damage (cracking) of the electro-optical panel due to dropping, a manufacturing method thereof, and an electronic apparatus. To do.

  In one aspect of the present invention, an electro-optical device includes an electro-optical panel in which an electro-optical material is sealed between a pair of substrates, and an adhesive element attached to a surface opposite to the display surface of the electro-optical panel. And four end faces of the electro-optical panel are exposed on the frame.

  The electro-optical device is attached to the frame by an adhesive element on the surface opposite to the display surface of the electro-optical panel. In addition, since the end surfaces of the four sides of the electro-optical panel are exposed on the frame and the end surface of the electro-optical panel is not held by the wall of the frame or the like, the electronic apparatus that houses the electro-optical device is Even if it falls, the stress that causes the electro-optic panel to be bent through the frame does not act on the electro-optic panel due to the impact of the fall. Therefore, it is possible to prevent damage (cracking) of the electro-optical panel.

  In one aspect of the electro-optical device, the frame has a flat surface for holding the electro-optical panel. Therefore, the end surfaces of the four sides of the electro-optical panel are not in contact with the frame. For this reason, it is possible to prevent the stress that causes the electro-optical panel from being bent through the frame due to the impact at the time of dropping, from acting on the end surfaces of the four sides.

  In another aspect of the electro-optical device, the outer shape of the electro-optical panel is the same size as the outer shape of the frame, and each end surface of the four sides of the electro-optical panel and the corresponding 4 of the frame. Each end face of the side is on the same vertical plane.

  According to this aspect, the outer dimensions of the electro-optical panel and the frame are the same size, and each end surface of the four sides of the electro-optical panel and each end surface of the four sides of the corresponding frame are the same vertical. Is on the surface. Therefore, by arranging the end surfaces of the electro-optical panel and the frame at the time of manufacture, the electro-optical panel can be accurately positioned at a predetermined position on the frame.

  In another aspect of the electro-optical device, an outer shape of the electro-optical panel is smaller than an outer shape of the frame, and at least two sides of the frame are each formed with a notch, and the notch is Each end surface of the electro-optical panel at the side corresponding to the formed side and the bottom surface of the notch are on the same vertical plane.

  According to this aspect, the electro-optic panel is smaller than the outer shape of the frame, and the notch portions are formed on at least two sides of the frame, so that the positioning pins and the like are inserted into the notch portions, By aligning the end surfaces of at least two sides of the electro-optic panel and the bottom surfaces of the corresponding cutout portions so as to be on the same vertical plane, the electro-optic panel is accurately positioned at a predetermined position on the frame. Can be positioned.

  In one embodiment, the frame may contain a light guide plate.

  In another aspect of the present invention, an electronic device includes an upper case having an opening, a frame-shaped buffer member attached to a peripheral edge of the opening, a lower case fitted in the upper case, The electro-optical device held by the upper case and the lower case, and the display region of the electro-optical device is exposed from the opening of the upper case, and the display outer region of the electro-optical device is These are held by the frame-shaped buffer member.

  According to this aspect, the non-display area of the electro-optical device is held by the frame-shaped buffer member with a constant pressure by fitting the upper case and the lower case. Therefore, even if the electronic device falls, the impact of the fall is absorbed by the frame-shaped buffer member, and the damage (cracking) of the electro-optical panel can be prevented.

  In another aspect of the present invention, a method for manufacturing an electro-optical device includes abutting two adjacent sides of a frame with a plurality of protrusions formed on a jig, and placing the frame at a predetermined position on the jig. A first step of positioning; a second step of abutting two adjacent sides of the electro-optical panel on the plurality of protrusions to position the electro-optical panel at a predetermined position of the frame; and bonding at the predetermined position. And a third step of attaching the electro-optical panel to the frame by an element.

  According to the manufacture of the electro-optical device, first, two adjacent sides of the frame are brought into contact with a plurality of protrusions on the jig, thereby accurately positioning the frame at a predetermined position on the jig. Next, the two adjacent sides of the electro-optical panel are brought into contact with the same protrusion, thereby accurately positioning the electro-optical panel at a predetermined position on the frame. Next, the electro-optical panel is fixed to at least two sides of the frame by an adhesive element such as a double-sided tape. Thereby, the electro-optical panel can be positioned at a predetermined position on the frame.

  In one aspect of the method of manufacturing the electro-optical device, a plurality of notches are formed on two adjacent sides of the frame, and the first step corresponds to the notches corresponding to the notches. The frame is positioned at a predetermined position on the jig by contacting a plurality of protrusions. Thereby, the frame can be accurately positioned at a predetermined position on the jig.

  In another aspect of the present invention, the method of manufacturing an electronic device includes contacting a plurality of adjacent protrusions formed on a jig with two adjacent sides of the frame and positioning the frame at a predetermined position on the jig. A second step of abutting two adjacent sides of the electro-optical panel on the plurality of protrusions to position the electro-optical panel at a predetermined position of the frame; and an adhesive element at the predetermined position. And a third step of attaching the electro-optical panel to the frame, and a frame-shaped buffer member attached to the peripheral portion of the opening of the upper case with respect to the display outside region of the electro-optical panel attached to the frame. And a fourth step of accommodating the electro-optical device in the upper case and the lower case in a state of being pressed at a constant pressure.

  According to the manufacture of the electronic apparatus, the display outside region of the electro-optical device manufactured by the above-described manufacturing method can be held at a constant pressure by the frame-shaped buffer member. Therefore, even if the electronic device falls, the impact of the fall is absorbed by the frame-shaped buffer member, so that damage (cracking) of the electro-optical panel can be prevented.

  The best mode for carrying out the present invention will be described below with reference to the drawings. In the following description, a liquid crystal display device will be described as an example of an electro-optical device to which the present invention is applied.

  In this embodiment, the end faces of the four sides of the liquid crystal display panel are fixed on the frame, and the four peripheral edges of the liquid crystal display panel are held by a frame-like buffer member attached to the electronic device. Thus, damage (cracking) of the liquid crystal display panel due to dropping is prevented.

[First embodiment]
FIG. 1 is a plan view showing a schematic configuration of a liquid crystal display device 100 according to a first embodiment of the present invention and an electronic apparatus 200 on which the liquid crystal display device 100 is mounted. FIG. 1A shows a plan view of the liquid crystal display device 100, and FIG. 1B shows a plan view of the electronic apparatus 200.

  As shown in FIG. 1A, the liquid crystal display device 100 includes a liquid crystal display panel 1, an FPC 2, a light guide plate 3 (shown by a broken line), and a frame 4.

  The liquid crystal display panel 1 is configured by enclosing a liquid crystal between a pair of transparent substrates 1a and 1b such as a glass substrate through a sealing material (not shown). The upper transparent substrate 1a includes a display area 1aa where an image is displayed and a non-display area 1ab where no image is displayed. The lower transparent substrate 1b includes an extended region 1ba that protrudes from the upper transparent substrate 1a, and a terminal portion (not shown) for electrical connection with the FPC 2 is formed thereon. A driver IC 5 for driving the liquid crystal display panel 1 is mounted on the overhang region 1ba of the lower transparent substrate 1b. In the present invention, the internal configuration of the liquid crystal display panel 1 does not matter.

  The FPC 2 is a flexible printed circuit board on which circuits and wiring necessary for display drive control of the liquid crystal display panel 1 are formed. As shown in FIG. 1A, one end 2a of the FPC 2 is electrically connected to the liquid crystal display panel 1 through an anisotropic conductive film (not shown), for example. Further, the FPC 2 shown in FIG. 1A is folded back to the back side of the liquid crystal display device 100 around the vicinity of one end 2a thereof, and includes the other end 2b of the folded FPC 2. The portion is further folded on the back surface of the liquid crystal display device 100. The other end 2b of the FPC 2 is formed with a plurality of terminals (not shown) connected to the main substrate of the electronic device 200 on which the liquid crystal display device 100 is mounted. Through this terminal, control signals necessary for image display by the liquid crystal display panel 1 and image data to be displayed are input to the FPC 2 and supplied to the liquid crystal display panel 1 via wiring on the FPC 2 or the like.

  The light guide plate 3 scatters and reflects illumination light emitted from a light source mounted on the FPC 2 together with a reflection sheet (not shown) attached to the back side thereof to illuminate the liquid crystal display panel 1 from the back side. It is. The light guide plate 3 has a flat plate shape and is sandwiched between the liquid crystal display panel 1 and the frame 4.

The frame 4 is a frame-like frame for holding the light guide plate 3 and the liquid crystal display panel 1.
The frame 4 is preferably a resin material such as polycarbonate. Further, as shown in FIG. 1A, a plurality of notches 4b are formed on one side 4a of the frame 4, and a plurality of notches are also formed on the other one side 4c of the frame 4. A portion 4d is formed. In addition, those notches 4b and 4d are formed in a semicircular shape.

  In the configuration of the liquid crystal display device 100, the liquid crystal display panel 1 is fixed to the upper surface of the frame 4 by the double-sided tape 9 with the light guide plate 3 interposed therebetween, and the end surfaces of the four sides of the liquid crystal display panel 1 are in contact with the frame 4. It is exposed. Further, the end surface of one side 1c of the liquid crystal display panel 1 is on the same plane (surface perpendicular to the paper surface) as the bottom surface 4ba of the plurality of notches 4b, and the other one side 1d of the liquid crystal display panel 1. Is located on the same plane (surface perpendicular to the paper surface) as the bottom surface 4da of the plurality of notches 4d.

  As shown in FIG. 1B, the electronic device 200 is located on the lower side of the paper surface of the upper case 202 and the upper case 202, and fits with the upper case 202 to hold the liquid crystal display device 100 (not shown). A lower case is provided. The upper case 202 has an opening, and a frame-shaped gasket 201 is attached to the periphery of the opening. The gasket 201 is preferably a resin material having a buffer function such as poron.

  The electronic device 200 houses (holds) the liquid crystal display device 100 therein. That is, the upper case 202 is fitted with the lower case, and the liquid crystal display device 100 is accommodated therein. The liquid crystal display device 100 is mounted on a substrate (not shown) in the electronic device 200, and the display area 1aa of the liquid crystal display panel 1 is exposed at the position of the opening of the upper case 202. Further, the non-display area 1ab of the liquid crystal display panel 1 overlaps the back side of the frame-shaped gasket 201. The outer display area 1ab of the liquid crystal display panel 1 is held in a state of being pressed against the frame-shaped gasket 201 with a constant pressure by fitting the upper frame 202 and the lower case. In the example of FIG. 1B, the gasket 201 is configured to overlap with only the outside display area 1ab of the liquid crystal display panel 1, but the gasket 201 may be configured to overlap with the peripheral edge of the frame 4 in the outer region.

  As described above, according to the electronic device 200 on which the liquid crystal display device 100 is mounted, the four sides of the liquid crystal display panel 1 are not in contact with the frame 4 (that is, the structure in which the four sides of the liquid crystal display panel are held by the inner wall of the frame. Therefore, even if the electronic device 200 is dropped, the stress that causes the liquid crystal display panel 1 to bend due to the impact of the drop does not act on the liquid crystal display panel 1 through the frame 4. Further, since the peripheral edges of the four sides of the liquid crystal display panel 1 are held by the gasket 201, the impact of the drop is absorbed by the gasket 201, and the impact of the drop that damages the liquid crystal display panel 1 is applied to the liquid crystal display panel. 1 is not transmitted. Therefore, damage (cracking) of the liquid crystal display panel 1 can be prevented.

  Next, a method for manufacturing the liquid crystal display device 100 and the electronic apparatus 200 in which the liquid crystal display device 100 is mounted will be described with reference to FIGS.

  FIG. 2A shows a jig 10 for positioning the frame 4 and the liquid crystal display panel 1. FIG. 2B shows a side view when the jig 10 shown in FIG. 2A is observed from the direction of arrow A. FIG.

  The jig 10 has a flat plate shape, and the upper surface and the lower surface are ensured to be flat. The jig 10 is formed such that a plurality of positioning pins 10a and 10b protrude from the upper surface thereof. Note that the pin 10a and the pin 10b are the same, and are given different symbols for convenience of explanation. In the present embodiment, two pins 10a and 10b are formed, but not limited to this, one pin 10a and 10b may be formed. If at least one pin 10a and 10b are formed, the frame 4 and the like can be positioned.

  First, as shown in FIG. 3A, the frame-like frame 4 in which the opening and the plurality of notches 4 b and 4 d are formed is placed on the jig 10. The light guide plate 3 is already attached to a predetermined position on the frame 4 via an adhesive element by a previous process. A double-sided tape 9 for attaching the liquid crystal display panel 1 is attached to each side 4c, 4e of the frame 4. As shown in FIG. 3A, a plurality of notches 4b formed on one side 4a of the frame 4 are brought into contact with the pin 10a, and a plurality of parts formed on the other one side 4c of the frame 4 are contacted. The notch 4d is brought into contact with the pin 10b. Thus, the frame 4 can be positioned at a predetermined position on the jig 10. FIG. 3B shows a side view when FIG. 3A is observed from the direction of arrow B, that is, a side view in which the frame 4 is positioned on the jig 10.

  Next, as shown in FIG. 4A, the liquid crystal display panel 1 electrically connected to the FPC 2 is placed on the frame 4 positioned on the jig 10. At this time, as shown in FIG. 4A, the end surface of one side 1c of the liquid crystal display panel 1 is brought into contact with the pin 10a, and the end surface of the other one side 1d of the liquid crystal display panel 1 is brought into contact with the pin 10b. Thereby, the end surface of one side 1c of the liquid crystal display panel 1 and the bottom surfaces 4ba of the plurality of cutout portions 4b are located on the same vertical plane, and the end surface of the other one side 1d of the liquid crystal display panel 1 The bottom surfaces 4da of the plurality of cutout portions 4d are located on the same vertical plane. Further, the end surfaces of the four sides of the liquid crystal display panel 1 are exposed on the frame 4 and do not come into contact with the frame 4. Thus, the liquid crystal display panel 1 is positioned at a predetermined position on the frame 4 with the light guide plate 3 interposed therebetween. Then, the liquid crystal display panel 1 whose positioning has been completed is fixed on the frame 4 by a double-sided tape 9 attached to one side 4c, 4e of the frame 4. Thereby, a structure in which the frame 4, the light guide plate 3, and the liquid crystal display panel 1 are integrated is manufactured. 4B shows a side view of the structure when FIG. 4A is observed from the direction of arrow C. FIG.

  Next, the structure in which the frame 4, the light guide plate 3, and the liquid crystal display panel 1 are integrated is taken out from the jig 10. FIG. 5 shows a plan view of the structure. Next, centering on the vicinity of one end 2a of the FPC 2 of the structure, the FPC 2 is folded back to the back side of the liquid crystal display panel 1, and a portion including the other end 2b of the folded FPC 2 is liquid crystal. On the back side of the display panel 1, it is further folded back in the horizontal direction. In this way, the liquid crystal display device 100 is manufactured as shown in FIG.

  Next, the manufactured liquid crystal display device 100 is accommodated in the electronic device 200. Specifically, as can be understood with reference to FIG. 1A, first, the liquid crystal is arranged so that the display area 1aa of the liquid crystal display panel 1 is arranged at the position of the opening formed in the upper case 202. The back side of the display device 100 is attached on the substrate of the electronic device 200 (not shown). Next, the upper case 202 and the lower case are fitted together while covering the liquid crystal display device 100 from above with the upper case 202 of the electronic device 200. As a result, the display area 1aa of the liquid crystal display panel 1 is exposed from the opening of the upper case 202, and the display outside area 1ab of the liquid crystal display panel 1 overlaps the back side of the frame-shaped gasket 201. Further, by fitting the upper frame 202 and the lower case, the outside display area 1ab of the liquid crystal display panel 1 is held in a state of being pressed against the frame-shaped gasket 201 with a constant pressure. In this way, the liquid crystal display device 100 can be housed (held) in the electronic device 200 as shown in FIG.

  Therefore, according to the electronic device 200 described above, since the four sides of the liquid crystal display panel 1 are not in contact with the frame 4, even if the electronic device 200 falls, the liquid crystal display panel 1 is moved by the impact of the drop. There is no bending stress acting on the liquid crystal display panel 1 through the frame 4. Further, since the peripheral edges of the four sides of the liquid crystal display panel 1 are held by the gasket 201, the impact of the drop is absorbed by the gasket 201, and the impact of the drop that damages the liquid crystal display panel 1 is applied to the liquid crystal display panel. 1 is not transmitted. Therefore, damage (cracking) of the liquid crystal display panel 1 can be prevented.

  Next, a method for manufacturing the electronic device 200 described above will be described with reference to a flowchart with reference to FIG.

  First, the frame 4 is placed on the jig 10, and the frame 4 is positioned at a predetermined position on the jig 10 with positioning pins 10a and 10b (step S1).

  Next, the liquid crystal display panel 1 is placed on the frame 4, and the liquid crystal display panel 1 is positioned at a predetermined position on the frame 4 by the positioning pins 10a and 10b (step S2). Next, the liquid crystal display panel 1 that has been positioned is attached to the frame 4 via the double-sided tape 9 (step S3). At this time, the end surfaces of the four sides of the liquid crystal display panel 1 are exposed at positions above the frame 4. Thus, a structure in which the frame 4, the light guide plate 3, and the liquid crystal display panel 1 are integrated is manufactured. Next, the structure is taken out from the jig 10 (step S4).

  Next, the FPC 2 electrically connected to the liquid crystal display panel 1 constituting the structure is folded back several times (step S5). In this way, the liquid crystal display device 100 shown in FIG.

  Next, the manufactured liquid crystal display device 100 is accommodated (held) in the case of the electronic device 200 (step S6). Specifically, as can be understood with reference to FIG. 1A, the back surface of the liquid crystal display device 100 is arranged such that the display area 1aa of the liquid crystal display panel 1 is arranged at the position of the opening of the upper case 202. The liquid crystal display device 100 is accommodated in the electronic device 200 while the side is attached to the substrate of the electronic device 200 and the upper case 202 and the lower case are fitted. At this time, the non-display area 1ab of the liquid crystal display panel 1 overlaps the back side of the frame-shaped gasket 201, and the non-display area 1ab is held in a state of being pressed against the frame-shaped gasket 201 with a constant pressure. The Thereby, the electronic device 200 shown in FIG. 1B is manufactured.

[Second Embodiment]
The liquid crystal display device according to the second embodiment is the same as the liquid crystal display device according to the first embodiment in that the outer shape of the liquid crystal display panel, which is the component, and the outer shape of the frame, which is the component, are the same size. Different from 100.

  FIG. 7 is a plan view showing a schematic configuration of a liquid crystal display device 300 according to the second embodiment of the present invention and an electronic apparatus 500 on which the liquid crystal display device 300 is mounted. FIG. 7A shows a plan view of the liquid crystal display device 300, and FIG. 7B shows a plan view of the electronic apparatus 500.

As shown in FIG. 7A, the liquid crystal display device 300 includes a liquid crystal display panel 11, an FPC 12, a light guide plate 13, and a frame 14. In addition, since the function of each component of the liquid crystal display device 300 is substantially the same as that of the liquid crystal display device 100 of the first embodiment, it will be described in a simplified manner. The liquid crystal display panel 11 is configured by enclosing a liquid crystal between a pair of transparent substrates 11a and 11b such as a glass substrate via a sealing material (not shown). The upper transparent substrate 11a includes a display area 11aa where an image is displayed and a non-display area 11ab where an image is not displayed.
A driver IC 15 for driving the liquid crystal display panel 11 is mounted on the lower transparent substrate 11b.

  The FPC 12 is a flexible printed board similar to the FPC 2 of the first embodiment. As shown in FIG. 7A, one end portion 12a of the FPC 12 is electrically connected to the liquid crystal display panel 11 through an anisotropic conductive film (not shown), for example. Further, the FPC 12 shown in FIG. 7A is folded back to the back side of the liquid crystal display device 300 around the vicinity of one end 12a thereof, and includes the other end 12b of the folded FPC 2. The portion is further folded back in the lateral direction on the back side of the liquid crystal display device 300.

  The light guide plate 13 is the same as the light guide plate 3 of the first embodiment, and is sandwiched between the liquid crystal display panel 11 and the frame 14.

  The frame 14 is a frame-shaped frame for holding the light guide plate 13 and the liquid crystal display panel 11. Unlike the shape of the frame 4 of the first embodiment, the frame 14 is not formed with cutout portions on four sides of the frame 14. Further, the outer shape of the frame 14 is formed in the same size as the outer shape of the liquid crystal display panel 1.

  In the configuration of the liquid crystal display device 300, the liquid crystal display panel 11 is fixed to the upper side of the frame 14 via the double-sided tape 19 with the light guide plate 13 interposed therebetween, and the end surfaces of the four sides of the liquid crystal display panel 11 are in contact with the frame 14. Exposed without doing. Further, the end faces of the four sides of the liquid crystal display panel 1 are on the same vertical plane as the end faces of the four sides outside the corresponding frame 14.

  As shown in FIG. 7B, the electronic device 500 is located on the lower side of the upper case 502 and the upper case 502 and holds the liquid crystal display device 300 by fitting with the upper case 502. A lower case is provided. The upper case 502 has an opening, and a frame-shaped gasket 501 is attached to the periphery of the opening.

  The electronic device 500 houses (holds) the liquid crystal display device 300 therein. That is, the upper case 502 is fitted with the lower case, and the liquid crystal display device 300 is accommodated therein. The liquid crystal display device 300 is mounted on a substrate (not shown) in the electronic device 500, and the display area 11aa of the liquid crystal display panel 11 is exposed at the position of the opening of the upper case 502. Further, the non-display area 11ab of the liquid crystal display panel 11 overlaps the back side of the frame-shaped gasket 501. The outer display area 11ab of the liquid crystal display panel 11 is held by being pressed against the frame-shaped gasket 501 with a constant pressure by fitting the upper frame 502 and the lower case.

  As described above, according to the electronic device 500 on which the liquid crystal display device 300 described above is mounted, the four sides of the liquid crystal display panel 11 are not in contact with the frame 14. The stress that bends the liquid crystal display panel 11 does not act on the liquid crystal display panel 11 through the frame 14. Further, since the peripheral edges of the four sides of the liquid crystal display panel 11 are held by the gasket 501, the impact of the drop is absorbed by the gasket 501, and the impact of the drop that damages the liquid crystal display panel 11 is applied to the liquid crystal display panel. 11 is not transmitted. Therefore, damage (cracking) of the liquid crystal display panel 11 can be prevented.

  Next, a manufacturing method of the liquid crystal display device 300 and the electronic apparatus 500 in which the liquid crystal display device 300 is mounted will be described with reference to FIGS. In the present embodiment, the same jig 10 as in the first embodiment is used.

  First, as shown in FIG. 8A, the frame-like frame 14 in which the opening is formed is placed on the jig 10. 8A, the end surface of one side 14a of the frame 14 is in contact with the pin 10a, and the end surface of the other side 14c of the frame 14 is in contact with the pin 10b. In this way, the frame 14 can be positioned at a predetermined position on the jig 10. FIG. 8B shows a side view when FIG. 8A is observed from the direction of arrow D, that is, a side view in which the frame 14 is positioned on the jig 10.

  Next, as shown in FIG. 9A, the liquid crystal display panel 11 electrically connected to the FPC 12 is placed on the frame 14 positioned on the jig 10. 9A, the end face of one side 11c of the liquid crystal display panel 11 is brought into contact with the pin 10a, and the end face of the other one side 11d of the liquid crystal display panel 1 is brought into contact with the pin 10b. Thereby, each end surface of the four sides of the liquid crystal display panel 11 and each end surface of the four sides outside the frame 14 are located on the same vertical plane. Further, the end faces of the four sides of the liquid crystal display panel 11 are exposed on the frame 14. Thus, the liquid crystal display panel 11 is positioned at a predetermined position on the frame 14. Then, the liquid crystal display panel 11 that has been positioned is fixed on the frame 14 via a double-sided tape 19 attached to one side 14c, 14e of the frame 14. Thus, a structure in which the frame 14, the light guide plate 13, and the liquid crystal display panel 11 are integrated is manufactured. FIG. 9B shows a side view of the structure when FIG. 9A is observed from the direction of arrow E. FIG.

  Next, the structure in which the frame 14, the light guide plate 13, and the liquid crystal display panel 11 are integrated is taken out from the jig 10. FIG. 10 shows a plan view of the structure. Next, centering around the vicinity of one end 12a of the FPC 12 of the structure, the FPC 12 is folded back to the back side of the liquid crystal display panel 11, and a portion including the other end 12b of the folded FPC 12 is liquid crystal. Further folding back in the horizontal direction on the back surface of the display panel 11. In this way, as shown in FIG. 7A, the liquid crystal display device 300 is manufactured.

  Next, the manufactured liquid crystal display device 300 is accommodated in the electronic device 500. Specifically, as can be understood with reference to FIG. 7A, first, the liquid crystal display panel 11 is arranged such that the display area 11aa of the liquid crystal display panel 11 is arranged at the position of the opening formed in the upper case 502. The back side of the display device 300 is attached to a substrate of an electronic device 500 (not shown). Next, the upper case 502 and the lower case are fitted together while covering the liquid crystal display device 300 from above with the upper case 502 of the electronic device 500. As a result, the display area 11aa of the liquid crystal display panel 11 is exposed from the opening of the upper case 502, and the non-display area 11ab of the liquid crystal display panel 11 overlaps the back side of the frame-shaped gasket 501. Further, by fitting the upper frame 502 and the lower case, the outside display area 11ab of the liquid crystal display panel 11 is held in a state of being pressed against the frame-shaped gasket 501 with a constant pressure. In this way, the liquid crystal display device 300 can be accommodated (held) in the electronic device 500 as shown in FIG.

  Therefore, according to the electronic device 500 described above, since the four sides of the liquid crystal display panel 11 do not contact the frame 14 with the frame 14, even if the electronic device 500 falls, the liquid crystal display is caused by the impact of the dropping. The stress that bends the panel 11 does not act on the liquid crystal display panel 11 through the frame 14. Further, since the peripheral edges of the four sides of the liquid crystal display panel 11 are held by the gasket 501, the impact of the drop is absorbed by the gasket 501, and the impact of the drop that damages the liquid crystal display panel 11 is applied to the liquid crystal display panel. 11 is not transmitted. Therefore, damage (cracking) of the liquid crystal display panel 11 can be prevented.

  Next, a method for manufacturing the electronic device 500 will be described with reference to a flowchart with reference to FIG.

  First, the frame 14 is placed on the jig 10, and the frame 14 is positioned at a predetermined position on the jig 10 with the positioning pins 10a and 10b (step S21).

  Next, the liquid crystal display panel 11 is placed on the frame 14, and the liquid crystal display panel 11 is positioned at a predetermined position on the frame 14 with the positioning pins 10a and 10b (step S22). Next, the liquid crystal display panel 11 that has been positioned is attached to the frame 14 via the double-sided tape 19 (step S23). At this time, the end surfaces of the four sides of the liquid crystal display panel 11 are exposed at positions above the frame 14. Thus, a structure in which the frame 14, the light guide plate 13, and the liquid crystal display panel 11 are integrated is manufactured. Next, the structure is taken out from the jig 10 (step S24). Next, the FPC 12 electrically connected to the liquid crystal display panel 11 constituting the structure is folded back several times (step S25). In this way, the liquid crystal display device 300 shown in FIG.

  Next, the manufactured liquid crystal display device 300 is accommodated (held) in the case of the electronic device 500 (step S26). Specifically, as can be understood with reference to FIG. 7A, the liquid crystal display device 300 is electronically arranged so that the display area 11aa of the liquid crystal display panel 11 is arranged at the position of the opening of the upper case 502. The liquid crystal display device 300 is accommodated in the electronic device 500 while being mounted on the substrate of the device 500 and fitting the upper case 502 and the lower case together. At this time, the non-display area 11ab of the liquid crystal display panel 11 overlaps the back side of the frame-shaped gasket 501, and the non-display area 11ab is held in a state of being pressed against the frame-shaped gasket 501 with a certain pressure. The Thus, the electronic device 500 shown in FIG. 7B is manufactured.

[Display circuit]
Next, a display circuit configuration of the electronic apparatus 200 or 500 including the liquid crystal display device 100 or 300 according to the present invention will be described.

  FIG. 12 is a schematic block diagram illustrating a configuration example of a display circuit applied to the electronic devices 200 and 500. The electronic apparatus shown here includes the liquid crystal display panel 1 or 11 constituting the liquid crystal display device 100 or 300 and a control unit 410 that controls the liquid crystal display panel 1 or 11. Here, the liquid crystal display panel 1 or 11 is conceptually divided into a panel structure 1A or 11A and a drive circuit 1B or 11B composed of a semiconductor IC or the like. Further, the control means 410 includes a display information output source 411, a display information processing circuit 412, a power supply circuit 413, and a timing generator 414.

  The display information output source 411 includes a memory such as a ROM (Read Only Memory) or a RAM (Random Access Memory), a storage unit such as a magnetic recording disk or an optical recording disk, and a tuning circuit that tunes and outputs a digital image signal. The display information is supplied to the display information processing circuit 412 in the form of an image signal of a predetermined format based on various clock signals generated by the timing generator 414.

  The display information processing circuit 412 includes various well-known circuits such as a serial-parallel conversion circuit, an amplification / inversion circuit, a rotation circuit, a gamma correction circuit, and a clamp circuit, and executes processing of input display information to obtain image information. Are supplied to the drive circuit 400B together with the clock signal CLK. The driving circuit 400B includes a scanning line driving circuit, a data line driving circuit, and an inspection circuit. The power supply circuit 413 supplies a predetermined voltage to each of the above-described components.

[Electronics]
Next, specific examples of electronic devices to which the liquid crystal display panel according to the present invention can be applied will be described with reference to FIG.

  First, an example in which the liquid crystal display panel according to the present invention is applied to a display unit of a portable personal computer (so-called notebook personal computer) will be described. FIG. 13A is a perspective view showing the configuration of this personal computer. As shown in the figure, the personal computer 710 includes a main body 712 having a keyboard 711 and a display 713 to which the liquid crystal display panel according to the present invention is applied.

  Next, an example in which the liquid crystal display panel according to the present invention is applied to a display unit of a mobile phone will be described. FIG. 13B is a perspective view showing the configuration of this mobile phone. As shown in the figure, the mobile phone 720 includes a plurality of operation buttons 721, a receiver 722, a transmitter 723, and a display unit 724 to which the liquid crystal display panel according to the present invention is applied.

  Note that, as an electronic device to which the liquid crystal display panel according to the present invention can be applied, in addition to the personal computer shown in FIG. 13A and the mobile phone shown in FIG. Monitor direct-view video tape recorders, car navigation devices, pagers, electronic notebooks, calculators, word processors, workstations, videophones, POS terminals, digital still cameras, etc.

  The present invention is not limited to a liquid crystal display device, but in various electro-optical devices such as an electroluminescence device, an organic electroluminescence device, a plasma display device, an electrophoretic display device, and a field emission display (field emission display device). The present invention can be similarly applied.

It is a top view which shows the structure of the liquid crystal display device by 1st Embodiment, and an electronic device. The top view and side view of the jig | tool for positioning are shown. A state in which the frame is positioned at a predetermined position on the jig is shown. A state in which the liquid crystal display panel is positioned at a predetermined position on the frame is shown. The state where the frame, the light guide plate and the liquid crystal display panel are integrated is shown. 1 shows a method of manufacturing an electronic device according to a first embodiment. It is a top view which shows the structure of the liquid crystal display device by 2nd Embodiment, and an electronic device. A state in which the frame is positioned at a predetermined position on the jig is shown. A state in which the liquid crystal display panel is positioned at a predetermined position on the frame is shown. The state where the frame, the light guide plate and the liquid crystal display panel are integrated is shown. The manufacturing method of the electronic device which concerns on 2nd Embodiment is shown. 1 shows a circuit configuration of an electronic apparatus to which a liquid crystal display device of the present invention is applied. Examples of electronic devices to which the liquid crystal display device of the present invention is applied are shown.

Explanation of symbols

1, 11 Liquid crystal display panel, 2, 12 FPC, 3, 13 Light guide plate, 4, 14 frame, 5, 15 Driver IC, 9, 19 Double-sided tape, 10 Jig, 100, 300 Liquid crystal display device, 200, 500 Electronics machine

Claims (9)

An electro-optic panel formed by encapsulating an electro-optic material between a pair of substrates;
A frame adhered by an adhesive element on a surface opposite to the display surface of the electro-optical panel,
The electro-optical device is characterized in that end surfaces of four sides of the electro-optical panel are exposed on the frame.   The electro-optical device according to claim 1, wherein a surface of the frame that holds the electro-optical panel is flat. The outer shape of the electro-optical panel is the same size as the outer shape of the frame,
3. The electro-optical device according to claim 1, wherein each end surface of the four sides of the electro-optical panel and each end surface of the corresponding four sides of the frame are on the same vertical plane. The outer shape of the electro-optical panel is smaller than the outer shape of the frame,
Notches are formed on at least two sides of the frame,
The end face of the electro-optical panel at the side corresponding to the side where the cutout part is formed and the bottom surface of the cutout part are on the same vertical plane. Electro-optic device. The electro-optical device according to claim 1, wherein the frame houses a light guide plate. An upper case having an opening and having a frame-shaped cushioning member attached to a peripheral edge of the opening;
A lower case fitted to the upper case;
The electro-optical device according to claim 1, which is held by the upper case and the lower case.
The display area of the electro-optical device is exposed from the opening of the upper case,
The electronic display device is characterized in that an outside display area of the electro-optical device is held by the frame-shaped buffer member. A first step of abutting two adjacent sides of the frame to a plurality of protrusions formed on the jig and positioning the frame at a predetermined position on the jig;
A second step of abutting two adjacent sides of the electro-optic panel to the plurality of protrusions and positioning the electro-optic panel at a predetermined position of the frame;
And a third step of attaching the electro-optical panel to the frame by an adhesive element at the predetermined position. A plurality of notches are formed on two adjacent sides of the frame,
The said 1st process positions the said flame | frame in the predetermined position on the said jig | tool by contact | abutting each said notch part to the said several corresponding protrusion. Manufacturing method of the electro-optical device. A first step of abutting two adjacent sides of the frame to a plurality of protrusions formed on the jig and positioning the frame at a predetermined position on the jig;
A second step of abutting two adjacent sides of the electro-optic panel to the plurality of protrusions and positioning the electro-optic panel at a predetermined position of the frame;
A third step of attaching the electro-optical panel to the frame by an adhesive element at the predetermined position;
The electro-optical device in a state in which a frame-shaped buffer member attached to a peripheral portion of the opening of the upper case is pressed against a non-display area of the electro-optical panel attached to the frame with a constant pressure. And a fourth step of housing the inside of the upper case and the lower case.

Images