JP2001235730A - Display device and mobile information terminal apparatus mounting the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a display device in which only the display region can be increased without changing the frame size of the display part, the number of parts can be reduced, processing and assembling can be simplified, the production cost can be reduced and the weight of the device can be reduced, and to provide a mobile information terminal apparatus mounting that display device. SOLUTION: In the mobile information terminal apparatus having a display part 1 and a main body 2 which are electrically and mechanically connected through hinges 3, the display part is produced by housing a liquid crystal display device in a box-like back plate of the display part, applying a frame-like front plate of the display part surrounding the display region of the liquid crystal display device, and holding and fixing the four corners with fitting members.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device and a portable information terminal device equipped with the display device, and more particularly to a mounting structure of a liquid crystal display device in the display device.

[0002]

2. Description of the Related Art In recent years, as the amount of information itself has become enormous with computerization in various fields, there has been an increasing demand for portable information terminal devices to increase the amount of information that can be displayed at one time. This is a demand for a large screen with high resolution, and portable information terminal devices have been gradually becoming larger in recent years. However, on the other hand, there is also a high demand for maintaining portability,
As a result, it has become necessary to develop a portable information terminal device having a smaller screen and a larger screen.

The configuration of such a portable information terminal device will be described with reference to FIG. 1, which is an explanatory diagram of the present invention, taking a notebook personal computer as an example. As shown in FIG. 1, the notebook personal computer includes a display unit 1
And a main body 2, both of which are electrically and mechanically connected via a hinge 3, and a liquid crystal display device is mounted in the display 1. That is, the display unit 1 is configured by a display device in which the liquid crystal display device is fixed so as to be sandwiched between a box-shaped display unit rear plate and a frame-shaped display unit front plate.

[0004] However, as a method of fixing a liquid crystal display device when configuring a conventional display device, Japanese Patent Application Laid-Open No.
7, a plurality of bosses 35 are provided on the display unit rear plate 30, and the liquid crystal display device 10 is screwed through the screwing flange 11 provided on the side of the rear plate 3 with screws 60 as shown in FIG.
0 and cover the display unit front plate 20 from above, and through the screw holes 25 provided in the front plate, the boss 35 of the rear plate 30
A configuration in which a screw 60 is used to fix the device is disclosed.

[0005] Japanese Patent Application Laid-Open No. 9-297542 discloses FIG.
As shown in FIG. 1, a method is provided in which the claw 23 is provided on the display unit front plate 20 and the claw receiving portion 33 is provided inside the display unit back plate 30 so that the liquid crystal display device 10 is sandwiched only by fitting the claw. It has been disclosed.

In Japanese Patent Application Laid-Open No. 8-327983, a liquid crystal cell is placed on a support such as a frame, and a frame-shaped cover for covering the peripheral portion of the liquid crystal cell and the peripheral portion of the support is mounted thereon. A liquid crystal display device comprising: a plurality of claw portions projecting outward from an outer peripheral wall of a support; and a plurality of square holes provided on an outer peripheral wall of the cover, wherein the claw portion of the support and the square hole of the cover are provided. Are disclosed, in which the liquid crystal cell is held between the support and the cover.

[0007]

SUMMARY OF THE INVENTION The above-mentioned Japanese Patent Application Laid-Open No. 11-69.
In the fixing method 98, a space for screwing is required on the side of the liquid crystal display device, and a large non-display area is generated between the liquid crystal display device and the display unit (housing). Then
When the outer shape of the display unit is determined in advance, the size of the liquid crystal display device that can be mounted is limited by the size of the non-display area. Therefore, in the above-mentioned conventional mounting method, there is a problem that the mounting area of the liquid crystal display device has reached a limit and the display screen cannot be further enlarged.

In the case of Japanese Patent Application Laid-Open No. 9-297542, since the liquid crystal display device 10 is fixed only by the claws, there is a disadvantage that the strength of the display unit 1 is reduced. In order to eliminate this defect, the number of claws must be increased or the strength of the claws must be increased. Therefore, when disassembling the display unit 1 in a repair process or the like, there is a risk that the disassembling operation becomes difficult or the claws are broken. Also, the fixing structure of JP-A-8-327983 has the same problem as that of JP-A-9-297542 because the liquid crystal display device is fixed only by the claws.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has been made to enlarge only the display area without changing the external size of the display unit, to reduce the number of parts, to simplify processing and assembly, and to manufacture. It is an object of the present invention to provide a display device capable of reducing cost and weight and a portable information terminal device using the same.

[0010]

According to the present invention, a liquid crystal display device is accommodated in a box-shaped display unit rear plate, and a frame-shaped display unit front plate surrounding a display area of the liquid crystal display device is covered. The four corners are sandwiched and fixed by a fitting member, or a liquid crystal display device is accommodated in a box-shaped display unit back plate, and a frame-shaped display unit front plate surrounding a display area of the liquid crystal display device is covered with the liquid crystal display device. It has a configuration in which the upper side and the lower side of the unit rear plate and the display unit front plate are sandwiched and fixed by fitting members. The fitting member is made of plastic or metal, has a U shape or a U shape, and has a spring property. A stopper is provided at a distal end of the fitting member, and the stopper is fitted into guide grooves provided at four corners of the display unit rear plate and the display unit front plate to prevent the fitting member from falling off.

In addition to the fitting member, a claw receiving portion is provided on the display back plate, a claw is provided on the display front plate, and the claw of the display front plate is fitted into the claw receiving portion of the display back plate. By using the combination of the above, the integration of the display device can be further strengthened. Note that a slide groove may be provided on the display unit back plate, a slide claw may be provided on the display unit front plate, and the slide claw of the display unit front plate may be engaged with the slide groove on the display unit back plate.

According to the present invention, in a portable information terminal device having a display portion and a main body portion, both of which are electrically and mechanically connected via a hinge portion, the display portion includes a box. A liquid crystal display device is accommodated in a display unit rear plate, and a frame-shaped display unit front plate surrounding a display area of the liquid crystal display device is covered, and four corners are sandwiched and fixed by fitting members, or a box-shaped display is provided. A liquid crystal display device is housed in the rear panel, and a frame-shaped display front plate surrounding the display area of the liquid crystal display device is covered, and upper and lower sides of the display rear plate and the display front plate are fitted by fitting members. A portable information terminal device characterized by using a display device having a configuration of being sandwiched and fixed is obtained.

As described above, according to the present invention, a fitting portion for fixing the liquid crystal display device is provided on a display portion of a portable information terminal device or the like on which the liquid crystal display device is mounted, and the liquid crystal display device is provided by the fitting member. The entire display unit is fixed by sandwiching the display unit front plate and display unit back plate in a three-piece unit, so the liquid crystal display device can be mounted on the display unit back plate without using screws and the frame of the liquid crystal display device is downsized. Accordingly, the display area can be increased without increasing the size of the display unit. Further, the liquid crystal display device can be mounted on the display unit rear plate only by fitting the fitting member, and the display unit front plate and the display unit rear plate can be assembled at the same time, so that the manufacturing cost can be reduced. In the present invention, since the fitting member is located outside the display unit, the disassembling operation of the display unit in a repair process or the like can be easily performed.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of a display device according to the present invention and a first embodiment of a portable information terminal device equipped with the display device will be described with reference to FIGS. 1, 2 and 3. FIG. FIG.
1 is an overall perspective view of a portable information terminal device (notebook personal computer) according to a first embodiment of the present invention. The computer has a display unit 1 and a main unit 2, both of which are electrically and mechanically connected via a hinge unit 3. The display unit 1 uses a display device on which a liquid crystal display device is mounted. Have been.

Next, the details of each part will be described with reference to FIGS. FIG. 2 is an exploded perspective view of the display unit 1 of the portable information terminal device (notebook personal computer) according to the first embodiment of the present invention, and FIG. 3 is an enlarged sectional view of the fitting unit 4. The display device constituting the display unit 1 includes a liquid crystal display device 10, a display unit front panel 20, a display unit rear panel 30, and a fitting member 40, and the display unit front panel 20, the display unit rear panel 30, a fitting member 40. Are both made of plastic.
However, each component does not need to be made of plastic,
There is no problem even if made of metal.

The display unit front plate 20 has a frame shape surrounding the display area 10a, and covers the outside of the display area 10a. Further, at the four corners, there are provided display unit front plate guide grooves 21 for guiding the fitting member 40 and preventing the fitting member 40 from falling off. As shown in FIG. 3, the display unit front plate guide groove 21 is fitted with a stopper 40a of the fitting member 40 to prevent the fitting member 40 from falling off.

On the other hand, the display back plate 30 has a box-like shape, and surrounds and supports the liquid crystal display device 10 while protecting it. At the four corners, as in the case of the display unit front plate 20, the display unit rear plate guide grooves 3 for guiding the fitting member 40 and preventing the fitting member 40 from falling off are provided.
1 (the back side in FIG. 2). The display unit rear plate guide groove 31 also has the same shape as the display unit front plate guide groove 21, and as shown in FIG.
0a is fitted to prevent the fitting member 40 from falling off.

The fitting member 40 has a U-shape or a U-shape, has a suitable spring property, and holds the liquid crystal display device 10, the display unit front plate 20, and the display unit back plate 30 in a three-dimensional unit. Have enough strength to do. Further, a stopper 40a is formed at the tip, and the guide grooves 21 and 31 are formed.
, So that the fitting member 40 is prevented from falling off.

The liquid crystal display device 10 is a device for displaying a video signal sent from the main body as a video on the display area 10a. The liquid crystal display device 10 generally has a display area 10a.
Must be fixed to the display unit back plate 30 and mounted so as not to move in the display unit 1.

In assembling the display unit 1 of the portable information terminal device (notebook personal computer) according to the first embodiment of the present invention, first, the liquid crystal display device 10 is housed in the display unit back plate 30, and then the display is performed. This is performed in a flow of covering the front panel 20 and finally fitting the fitting member 40. First, the liquid crystal display device 10 is housed in the display unit back plate 30. According to the conventional method of screwing, the liquid crystal display device 10 must be screwed to the display unit back plate 30 as shown in FIG. Must. In the present invention, the work here only needs to fit the liquid crystal display device 10 in the display unit rear plate 30.

Next, the display unit rear plate 30 and the liquid crystal display device 10
The display unit front plate 20 is put on the display. In the traditional way,
The display unit front panel 20 is fixed to the display unit rear panel 30 by screws.
0 and fit along the guide grooves 21 and 31 of the display unit rear plate 30.

In the conventional method, the liquid crystal display device 10, the display unit front plate 20, and the display unit back plate 30 are fixed by the tightening force of the screw, but in the present invention, the display unit front plate 20 and the display unit are fixed. The fitting member 40 fitted along the guide grooves 21, 31 of the back plate 30, by the spring force, integrates the display unit front plate guide groove 21, the display unit back plate guide groove 31, and the frame 10 b of the liquid crystal display device into a three-dimensional unit. To hold and integrate the liquid crystal display device 10, the display unit front panel 20, and the display unit rear panel 30 (= display unit 1). The fitted fitting member 40 is configured to be caught in the guide grooves 21 and 31 by its spring force and the stopper 40a and not fall off.

Further, notches 22 and 32 to which hinges (not shown) for rotatably connecting the display unit 1 and the main unit 2 are attached are provided on the lower sides of the display unit front panel 20 and the display unit rear panel 30. Is formed. Double notch 2
The reference numerals 2 and 32 are configured such that the display unit front panel 20 and the display unit rear panel 30 are overlapped with each other so that the hinge fittings are integrally accommodated. The fitting member 40 assists the integration of the display unit 1 by sandwiching the hinge fitting.

In the first embodiment, no extra space is formed on each of the upper, lower, right, and left sides of the display unit 1, and the four corners of the display unit 1 are fitted so that the fitting member 40 has sufficient strength. The part 4 is arranged. When the fitting part 4 is arranged on each of the upper, lower, right and left sides of the display part 1, the fitting member 40 must be made small or thin so that the external size of the display part 1 is not changed. Therefore, there is a disadvantage that the strength of the fitting member 40 is reduced. Conversely, in order to maintain the strength of the fitting member 40, the outer size must be increased. In the first embodiment, the strength of the fitting member 40 can be reduced without increasing the outer size of the display unit 1 by efficiently using the spaces at the four corners (corner portions) of the display unit 1 for the fitting unit 4. Can be secured.

Next, a second embodiment of the display device according to the present invention and a portable information terminal device equipped with the display device will be described with reference to FIG. FIG. 4 is an exploded perspective view of a display unit 1 of a portable information terminal device (notebook personal computer) according to the second embodiment of the present invention. In the first embodiment, the display unit 1 is integrated only with the fitting member 40. On the other hand, in the second embodiment, not only the fitting units 4 at the four corners but also the claws 23 are used together to display. The integration of the part 1 was strengthened.

The display unit 1 comprises a liquid crystal display device 10, a display unit front panel 20, a display unit rear panel 30, and a fitting member 40.
Display unit front panel 20, display unit rear panel 30, fitting member 40
Are both made of plastic. However, each member does not need to be made of plastic, and there is no problem even if it is made of metal.

The display unit front panel 20 has a frame shape surrounding the display area 10a, and covers the outside of the display area 10a. Further, at the four corners, there are provided display unit front plate guide grooves 21 for guiding the fitting member 40 and preventing the fitting member 40 from falling off. In addition, claws 23 are provided on each of the upper left and right sides to assist in joining with the display unit rear plate 30.

On the other hand, the display unit rear plate 30 has a box shape, and surrounds and supports the liquid crystal display device 10 and protects it. At the four corners, as in the case of the display unit front plate 20, the display unit rear plate guide grooves 3 for guiding the fitting member 40 and preventing the fitting member 40 from falling off are provided.
1 is provided. Also, the claw 2 of the display unit front plate 20
The claw receiving portion 33 for receiving the third claw 3
3 are provided. However, the claw 23 and the claw receiving portion 33 can be freely arranged at any positions on the upper left and right sides, and need not necessarily be arranged on all the upper left and right sides. Also, there is no problem if the claw receiving portion 33 is disposed on the display front plate 20 and the claw 23 is disposed on the display rear plate 30 in the opposite direction.

The fitting member 40 has a U-shape or a U-shape and has an appropriate spring property, and holds the liquid crystal display device 10, the display unit front plate 20, and the display unit back plate 30 in a three-dimensional unit. Have enough strength to do. Further, a stopper 40a is formed at the tip, so that the fitting member 40 is hardly dropped.

The liquid crystal display device 10 is a device for displaying a video signal transmitted from the main body as a video on the display area 10a. The liquid crystal display device 10 generally has a display area 10a.
Must be fixed to the display unit back plate 30 and mounted so as not to move in the display unit 1.

In the second embodiment, the liquid crystal display device 10
Is accommodated in the display unit back plate 30, and after joining the display unit front plate 20 to the display unit back plate 30 while fitting the claws 23 and the claw receiving portions 33 together, the four corners are fixed by the fitting members 40. . The fitting member 40 is fitted along the guide grooves 21 and 31 of the display unit front plate 20 and the display unit back plate 40, and the display unit front plate guide groove 21, the display unit back plate guide groove 31, By sandwiching the frame 10b of the liquid crystal display device in a three-dimensional manner, the liquid crystal display device 10, the display unit front plate 20, and the display unit back plate 30 (= display unit 1) are held and integrated. The fitted member 40 is fitted with the stopper 4
Oa prevents the guide grooves 21 and 31 from being caught and falling off. Also, the claw 23 and the claw receiving portion 33
The fitting of the display unit 1 is further strengthened by the fitting.

Further, on the lower side of the display unit front plate 20 and the display unit back plate 30, notch portions 22 and 32 to which hinges (not shown) for rotatably connecting the display unit 1 and the main unit 2 are attached are attached. Is formed. Double notch 2
The reference numerals 2 and 32 are configured such that the display unit front panel 20 and the display unit rear panel 30 are overlapped with each other so that the hinge fittings are integrally accommodated. The fitting member 40, the claw 23, and the claw receiving portion 33 assist integration of the display unit 1 by also sandwiching the hinge fitting.

Conventionally, as shown in FIG.
0, the claw 23 and the claw receiving part 3 inside the display unit back plate 30.
3, the claw 23 and the claw receiving portion 33 are provided.
There is also a method of sandwiching the liquid crystal display device 10 by merely fitting (Japanese Patent Laid-Open No. 9-297542). However, in this case, the strength of the display unit 1 is weakened because the liquid crystal display device 10 is fixed only by the claws 23. is there. In order to eliminate this drawback, the number of the claws 23 must be increased or the strength of the claws 23 must be increased. Therefore, when disassembling the display unit 1 in a repair process or the like, there is a risk that the disassembling operation becomes difficult or the claws 23 are broken. In the second embodiment, since the strength of the claw 23 can be adjusted by using the fitting portion 4 and the claw 23 together, the disassembling operation of the display unit 1 can be easily performed, and the danger of the claw 23 being broken. Can be reduced.

Next, a third embodiment of the structure of the display device according to the present invention and a portable information terminal device equipped with the display device will be described with reference to FIG. FIG. 5 is an exploded perspective view of the display unit 1 of the portable information terminal device (notebook personal computer) according to the third embodiment of the present invention. In the second embodiment, not only the fitting portions 4 at the four corners but also the claws 2 are provided.
In the third embodiment, the fitting portion 4 at the four corners and the slide claw 24 are used.
Was used in combination.

In the third embodiment, the liquid crystal display device 10 is first housed in the display back plate 30. The display unit rear plate 30 is provided with a slide groove 34, while the display unit front plate 20 is provided with a slide claw 24. Next, the display unit front plate 20 is moved to the slide claw 24 and the slide groove 3.
4 is joined to the display unit rear plate 30 while the display unit front plate 20 is slid downward to fix the slide claw 24 and the slide groove 34. Then, the four corners are fixed by the fitting members 40, and the liquid crystal display device 10, the display unit front plate 20, and the display unit back plate 30 (= display unit 1) are held and integrated.

Next, a display device according to a fourth embodiment of the present invention and a portable information terminal device equipped with the display device will be described with reference to FIG. FIG. 6 is an exploded perspective view of a display unit 1 of a portable information terminal device (notebook personal computer) according to the fourth embodiment of the present invention. In the fourth embodiment, the fitting portions 4 are arranged on the upper side and the lower side of the display unit 1. According to the fourth embodiment, the upper side uses the space for attaching the hook 50 that is fixed to the main body 2 side when the display unit 1 is closed, and the lower side uses the space for installing the hinge fitting, which is unnecessary. The fitting section 4 can be arranged on the upper and lower sides without increasing the outer shape of the display section 1.

In the first to fourth embodiments described above, there is no problem even if nails are used as needed, the number of fitting portions is increased, or screws are used as needed. For example, there is a method of screwing a hinge fitting, a display unit front panel, and a display unit rear panel on the lower side, and arranging a fitting part on the upper side, or a method using a nail together.

[0038]

As described above in detail, according to the present invention, the liquid crystal display device 10 is provided between the outer peripheral portion of the display rear plate 30 and the outer peripheral portion of the display front plate 20 constituting the display device. It is not necessary to secure a space for forming a screw hole for fixing the display area 10a, and the display area 10a can be extended to the vicinity of the outer peripheral portions of the display rear panel 30 and the display front panel 20. For this reason,
It is possible to enlarge only the display area 10a while keeping the outer shape of the display unit 1, that is, the display device, as it is, and it is possible to achieve both easy viewing of the screen and portability.

According to the structure of the present invention, no screws are used,
Since it is assembled simply by fitting the fitting member 40, the boss portion for receiving the liquid crystal display device 10 from the display unit back plate 30 can be omitted, and screws and screw holes are not required.
Assembly can be simplified. Therefore, it is convenient to reduce the number of parts, simplify processing and assembly, reduce manufacturing cost, and reduce weight.

Conventionally, the frame 10b of the liquid crystal display device constituting the display device needs to have strength for screwing and is made of metal. However, if the mounting structure according to the present invention is adopted, it is possible to use other materials such as resin. There is no problem even if the frame is made of the above material. Further, in the present invention, since the fitting member 40 is detachable from the outside of the display unit 1, the disassembling operation of the display unit 1 in a repair process or the like can be easily performed.

[Brief description of the drawings]

FIG. 1 is a perspective view of a portable information terminal device according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view of a display device mounted on the portable information terminal device according to the first embodiment of the present invention.

FIG. 3 is an enlarged sectional view of a fitting portion 4 of FIG.

FIG. 4 is an exploded perspective view of a display device mounted on a portable information terminal device according to a second embodiment of the present invention.

FIG. 5 is an exploded perspective view of a display device mounted on a portable information terminal device according to a third embodiment of the present invention.

FIG. 6 is an exploded perspective view of a display device mounted on a portable information terminal device according to a fourth embodiment of the present invention.

FIG. 7 is an exploded perspective view of a display unit of a conventional portable information terminal device.

FIG. 8 is an exploded perspective view of a display unit of another conventional portable information terminal device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Display part 2 Main body part 3 Hinge part 4 Fitting part 10 Liquid crystal display device 10a Display area 10b Frame 11 Flange for screw 20 Display part front plate 21 Display part front plate guide groove 22 Display part front plate notch part 23 Claw 24 Slide claw 25 Screw hole 30 Display back plate 31 Display back plate guide groove 32 Display back plate notch 33 Claw receiving portion 34 Slide groove 35 Boss 40 Fitting member 40a Stopper 50 Hook 60 Screw

Claims (8)

[Claims] 1. A liquid crystal display device is accommodated in a box-shaped display unit rear plate, a frame-shaped display unit front plate surrounding a display area of the liquid crystal display device is covered, and four corners are sandwiched and fixed by fitting members. A display device characterized by the above-mentioned. 2. A box-shaped display unit back plate which accommodates a liquid crystal display device and is covered with a frame-shaped display unit front plate surrounding a display area of the liquid crystal display device, wherein the display unit back plate and the display unit front plate are covered. A display device comprising: an upper side and a lower side sandwiched and fixed by a fitting member. 3. The U-shaped or U-shaped fitting member having a spring property.
The display device according to 1 or 2. 4. The display device according to claim 1, wherein the fitting member is made of plastic or metal. 5. A stopper is provided at a tip end of said fitting member, and said stopper is fitted into guide grooves provided at four corners of said display back plate and said display front plate to prevent falling off. The display device according to claim 1, wherein: 6. A claw receiving portion is provided on the display unit rear plate,
The display device according to claim 1, wherein a claw is provided on the display unit front plate, and the claw of the display unit front plate is fitted into a claw receiving portion of the display unit back plate. 7. A slide groove is provided in the display unit rear plate,
The display device according to claim 1, wherein a slide claw is provided on the display unit front plate, and the slide claw of the display unit front plate is engaged with a slide groove of the display unit back plate. 8. A portable information terminal device having a display section and a main body section, both of which are electrically and mechanically connected via a hinge section, wherein the display section has a display section and a main body section. A portable information terminal device comprising the display device according to any one of the above.