JP2010114624A - Mobile terminal device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mobile terminal device which can be made compact and lightweight and whose sub LCD or main LCD is neither transformed nor damaged even when a large external force is applied, and is applied with only a small stress and protected against damage at installation in the housing of a sub-display module even when the sub-display is enlarged. <P>SOLUTION: A foldable cellular phone 100 has a first housing 1, a second housing 2, on one surface of which a main LCD 24 is arranged and on the other surface of which a sub LCD 55 is arranged, and a hinge part 3 which rotationally connects the first and second housings 1 and 2. The foldable cellular phone 100 has a sub LCD holder 51, at the outside part of which an engaged arm 511 with an engaged claw 513 formed at its edge is provided to support the sub LCD 55, and a receiving frame part 28 which is arranged at a position corresponding to the position of the engaged claw 513 of the second housing 2. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a portable terminal device provided with display means such as a liquid crystal display device on both sides of a housing, and in particular, a portable device in which a so-called main display is arranged on one surface of a housing and a so-called sub-display is arranged on the other surface. It relates to a terminal device.

  A portable terminal device such as a conventional foldable mobile phone is provided with a main LCD that performs various displays when the second casing is opened, while the second casing is folded even when the second casing is folded. A device in which a sub LCD for displaying time and time is provided has been put into practical use.

  In some cases, the portable terminal device sits with the portable terminal device in the back pocket of the trousers, and the casing of the portable terminal device is pressed or the portable terminal device is dropped on the floor.

In these cases, in order to prevent a large external force from being applied and deforming or destroying the sub LCD or the main LCD, it is known to provide a bracket for supporting the sub LCD while covering and protecting the main LCD. (For example, Patent Document 1).
JP 2006-227627 A

  However, since a portable terminal device such as a foldable mobile phone is carried in a pocket or a bag while being operated with the palm of the hand or the case is folded, or carried with a hand, the case has a high strength and small size. There is a demand for weight reduction or high strength and thinning of the housing.

  Although the portable terminal device of Patent Document 1 is good for increasing the strength of the housing, the space occupied by the brackets increases, and is not necessarily optimal for reducing the size, weight, or thickness of the housing.

  The present invention has been made to solve such a conventional problem, and a portable terminal device such as a cellular phone in which a main display is disposed on one surface of a housing and a sub-display is disposed on the other surface. An object of the present invention is to provide a portable terminal device that can prevent the sub-LCD or the main LCD from being deformed or destroyed when a large external force is applied to the portable terminal device, and can be reduced in thickness or weight.

  A portable terminal device according to the present invention includes a first housing having an operation unit and a control unit, and a second housing in which a main display is disposed on one surface of the housing and a sub-display is disposed on the other surface. And a hinge part that rotatably connects the first housing and the second housing, wherein the main display and the sub-display are at least partially overlapped with each other in the vertical direction. In the arranged mobile terminal device, a locking arm having a locking claw formed at the tip is provided on the outer peripheral portion, and a sub display holder for holding the sub display, and the locking claw of the second casing A receiving frame portion disposed at a position corresponding to the position, and holding the sub display holder on the second casing by loosely engaging the locking claw with the receiving frame portion. To do.

  With this configuration, it is possible to provide a mobile terminal device such as a mobile phone that can prevent the sub display or the main display from being deformed or destroyed when a large external force is applied to the mobile terminal device, and can be reduced in thickness or weight. be able to.

  Furthermore, even when the sub display is enlarged, the stress applied to the sub display when the sub display module is attached to the second housing can be reduced, and damage to the sub display can be prevented.

  In the portable terminal device of the present invention, when a large external force is applied to the portable terminal device in a portable terminal device such as a cellular phone in which the main display is arranged on one side of the casing and the sub-display is arranged on the other side. In addition, it is possible to prevent the sub display or the main display from being deformed or destroyed and to reduce the thickness or weight.

  Furthermore, even when the sub display is enlarged, the stress applied to the sub display when the sub display module is attached to the second housing can be reduced, and damage to the sub display can be prevented.

  Hereinafter, a portable terminal device according to an embodiment of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is an external perspective view showing a closed state of a foldable mobile phone 100 which is a mobile terminal device according to Embodiment 1 of the present invention.

  In FIG. 1, a foldable mobile phone 100 includes a first housing 1 having an operation unit and a control unit, a main LCD disposed on one surface of the housing, and a sub LCD disposed on the other surface. The second housing 2 is connected to the hinge portion 3 so as to be rotatable in the direction of arrow A. The first casing 1 may be called a lower casing, and the second casing 2 may be called an upper casing.

  As shown in FIG. 1, in a state in which the foldable mobile phone 100 is folded, a sub LCD module 5 in which a sub LCD 55, a flexible substrate 54, and the like are pre-assembled in a sub LCD holder 51 indicated by a broken line below a sub LCD panel 21b described later. Is arranged.

  FIG. 2 is a cross-sectional view of the second casing 2 of the foldable mobile phone 100. In FIG. 2, the second casing 2 has a cover 2a to which a main LCD panel 21a made of a transparent plastic plate is attached and a case 2b to which a sub LCD panel 21b made of a transparent plastic plate is attached. Merged in the direction.

  Note that the cover 2a may be referred to as an upper cover, and the case 2b may be referred to as an upper case.

  As shown in FIG. 2, the main LCD panel 21a and the like (main display) and the sub LCD panel 21b and the like (sub display) are arranged at positions where at least a part thereof overlaps with each other in the vertical direction.

  A backlight reflector 22 made of a stainless steel plate having a thickness of about 0.3 mm is insert-molded on the cover 2a, and a main LCD light guide plate 23 made of a transparent plastic plate and a main display display are provided below the backlight reflector 22. The LCD 24 is held by the main LCD holder 25.

  A printed circuit board 4 is disposed above the backlight reflector 22, and a sub LCD module 5 is further disposed above the printed circuit board 4.

  Here, the sub LCD module 5 includes a sub LCD 55 serving as a display in the sub LCD holder 51, a light guide plate 53 for the sub LCD made of a transparent plastic plate, and a flexible substrate 54 that energizes the sub LCD 55 and connects to the signal wiring. The dust-proof sponge 56 affixed around the upper surface of the sub LCD 55 is assembled in advance.

  Further, the sub LCD module 5 is disposed above the printed circuit board 4, and the case 2b is covered in a state where the dust-proof sponge 56 of the sub LCD module 5 is pressed.

  FIG. 3 is an exploded perspective view showing an assembly of the sub LCD holder 51 and the sub LCD 55 according to the first embodiment.

  In FIG. 3, the sub LCD holder 51 has a square frame shape with a substantially L-shaped cross section formed of a flexible member, and the sub LCD 55 is fitted into the inside of the frame from the direction of the arrow B so as to be adhesive or bonded. Adhered with tape.

  Locking portions 512a and 512b having short arms protruding outward are integrally formed on the outer periphery of one side of the frame shape of the sub LCD holder 51. Locking portions 512a and 512b are locked at the tips of the locking portions 512a and 512b. Claws 514a and 514b are formed.

  In addition, a locking arm 511 having an arm longer than the above-described locking portions 512a and 512b is integrally formed on the outer periphery on the opposite side where the locking portions 512a and 512b are formed. A locking claw 513 having the same shape as the aforementioned locking claws 514a and 514b is formed at the tip.

  Here, the arm length of the locking portions 512a and 512b is shorter than the arm length of the locking arm 511. That is, the arm length of the locking arm 511 is longer than the arm length of the locking portions 512a and 512b. Here, since the length of the arms of the locking portions 512a and 512b is made shorter than the length of the arms of the locking arms 511, the sub LCD 55 can be enlarged by the shortened length.

  In addition, a plate-like flange portion 515 extends along the outer side of the frame-like side of the sub LCD holder 51 on one side where the locking portions 512a, 512b on the frame-like side of the sub-LCD holder 51 are integrally formed. It is integrally formed. The flange portion 515 is formed around the locking portion 512b.

  In addition, in the case of the locking portion 512a provided near the corner of the frame shape of the sub LCD holder 51, such as the locking portion 512a of the sub LCD holder 51 shown in FIG. 515 may not be formed around the locking portion 512a. Alternatively, the flange portion 515 may be formed around the locking portion 512a due to the balance with the strength.

  A dust-proof sponge 56 is affixed around the upper surface of the sub LCD 55. Below the sub LCD holder 51, a sub LCD light guide plate 53 made of a transparent plastic plate and a flexible substrate 54 energizing the sub LCD 55 are arranged in an electrically connected state and bonded and fixed. To do.

  Next, using FIG. 4 and FIG. 5, the sub LCD holder 51, the sub LCD light guide plate 53, the sub LCD 55, the flexible substrate 54, and the dustproof sponge 56, which are the features of the first embodiment of the present invention, are preassembled. A method of holding the sub LCD module 5 on the cover 2a will be described.

  FIG. 4 shows a cover 2a in which locking portions 512a and 512b projecting outwardly on the frame-shaped outer periphery of the sub LCD holder 51 and locking claws 514a, 514b and 513 formed at the tip of the locking arm 511 play loosely. It is a perspective view of the receiving frame part 28 formed in.

In FIG. 4, the receiving frame portion 28 is formed in the same shape on the cover 2 a in the same number as the number of locking portions 512 a, 512 b and the locking arms 511 formed in the sub LCD holder 51.
As shown in the figure, the shape of the receiving frame portion 28 is composed of a support portion 28a on both sides and an upper connecting portion 28b. It is slightly wider than the widths of 514b and 513.

  FIG. 5 is a schematic explanatory view showing a state in which the sub LCD module 5 is attached to the receiving frame portion 28 of the cover 2a.

  In FIG. 5, in order to attach the sub LCD module 5 to the designated position of the cover 2a, first, as shown in FIG. 5, the entire latching portion 512a, 512b side of the two arms of the sub LCD module 5 is placed downward. Is held diagonally, and the locking claws 514a and 514b at the tips of the locking portions 512a and 512b are inserted in the direction of the arrow D into the space formed by the two column portions 28a and the connecting portions 28b of the receiving frame portions 28 of the cover 2a. Hold the play.

  At this time, the strength of the one side of the frame-shaped sub LCD holder 51 is increased by the flange portion 515 integrally formed along one frame-shaped side of the sub LCD holder 51, so that the cover 2 a of the sub-LCD module 5 is moved to the cover 2 a. The stress applied to the sub LCD 55 at the time of mounting is reduced. Thereby, damage of the sub LCD 55 can be prevented.

  Next, as indicated by broken lines in FIG. 5, the arms formed on the sub LCD module 5 have a long flexibility with the locking claws 514a and 514b engaged with the receiving frame portions 28 of the cover 2a. The locking arm 511 is bent downward, the sub LCD module 5 is rotated in the direction of arrow E, and the locking arm 511 is positioned in a substantially horizontal position with the locking claw 513 facing the receiving frame portion on the cover 2a side. When the external force that is bending is released, the flexible locking arm 511 becomes linear, and the locking claw 513 at the tip is loosely engaged with the space formed by the two support column portions 28a and the coupling portion 28b. To do.

  At this time, the locking arm 511 is curved, so that the stress applied to the sub LCD 55 when the sub LCD module 5 is attached to the cover 2a is reduced. Thereby, damage of the sub LCD 55 can be prevented.

  As a result, all the locking claws 514a, 514b, and 513 of the sub LCD module 5 are engaged with the receiving frame portion 28 on the cover 2a side, and the sub LCD module 5 is held on the cover 2a side. Moreover, even when the sub LCD 55 is enlarged, the stress applied to the sub LCD 55 when the sub LCD module 5 is attached to the cover 2a (ie, the second casing 2) can be reduced, and damage to the sub LCD 55 can be prevented. it can.

  6 and 7 are cross-sectional views of the second housing 2 of the foldable mobile phone 100. FIG. 6 and FIG. 7, the same components as those shown in FIG.

  FIG. 6 shows a receiving frame portion 28 in which a locking claw 514a formed at the tip of a short arm locking portion 512a formed on the sub LCD holder 51 constituting the sub LCD module 5 is formed at a specified position of the cover 2a. It shows a state where it is engaged and held.

  FIG. 7 shows that a locking claw 513 formed at the tip of a locking arm 511 having a long flexible arm formed on the sub LCD holder 51 constituting the sub LCD module 5 is formed at a specified position of the cover 2a. It shows a state in which it is engaged with and held by the received receiving frame portion 28.

  Although not shown in the drawing, the sub LCD 55 is provided with a connector for connecting an electric signal via a flexible substrate 54 which is a flexible wiring, and the locking arm 511 is connected to this connector or this connector. Straddling signal wiring.

  As described above, according to the foldable mobile phone 100 which is the mobile terminal device of the first embodiment, the sub LCD module 5 is engaged with the locking claws 514a and 514b formed at the tips of the locking portions 512a and 512b. A locking claw 513 formed at the tip of the stop arm 511 is loosely engaged with and held by the receiving frame portion 28 on the cover 2a side.

  For this reason, since the screw is not used for mounting the sub LCD holder 51 assembled with the sub LCD 55, the mobile terminal device can be reduced in size and thickness, and can be easily applied to the cover 2a without the need for a special tool. Can also be held).

  In addition, locking portions 512a and 512b having short arms protruding outward are integrally formed on the outer periphery of one side of the frame shape of the sub LCD holder 51, and the opposite side on which the locking portions 512a and 512b are formed. A locking arm 511 having an arm longer than the locking portions 512a and 512b is integrally formed on the outer periphery.

  For this reason, even when the sub LCD 55 is enlarged, the stress applied to the sub LCD 55 when the sub LCD module 5 is attached to the cover 2a is reduced, and damage to the sub LCD 55 can be prevented.

  In addition, a plate-like flange portion 515 extends along the outer side of the frame-like side of the sub LCD holder 51 on one side where the locking portions 512a, 512b on the frame-like side of the sub-LCD holder 51 are integrally formed. It is integrally formed.

  For this reason, the stress applied to the sub LCD 55 when the sub LCD module 5 is attached to the cover 2a is further reduced, and the sub LCD 55 can be prevented from being damaged.

  Further, the locking claws 514a, 514b, and 513 formed at the tips of the locking portions 512a and 512b and the locking arm 511 are moved to the receiving frame portion 28 of the cover 2a (and therefore also the second housing 2). Since they are engaged in a loose state, transmission of a large external force that deforms the foldable mobile phone 100 and a shock when dropped is attenuated, and deformation or destruction of the sub LCD 55 assembled to the sub LCD holder 51 is prevented. Can do.

  In addition, since the special tool is not required at the time of repair service, the sub LCD module 5 can be easily removed, and the foldable mobile phone 100 having the effect that it can be easily attached after the repair service can be provided.

  In the first embodiment, the sub LCD module 5 is formed at the front ends of the locking claws 514a and 514b formed at the front ends of the locking portions 512a and 512b and the flexible locking arms 511. It has been described that the locking claw 513 is loosely engaged with and held by the receiving frame portion 28 on the cover 2a side.

  However, the present invention is not limited to this, and the sub LCD module 5 is formed at the distal ends of the locking claws 514a and 514b formed at the distal ends of the locking portions 512a and 512b and the flexible locking arms 511. The latching claws 513 may be held loosely in the receiving frame portion 28 provided on the case 2b side.

  Even when the receiving frame portion 28 is provided on the case 2b side as described above, since the screw is not used to attach the sub LCD holder 51 assembled with the sub LCD 55, the mobile terminal device can be reduced in size and reduced in thickness. In addition, the same effect can be obtained that, for example, it can be easily held in the case 2b (and therefore also in the second casing 2) without requiring a special tool.

  Further, as shown in FIGS. 2, 6, and 7, the flexible substrate 54 connected to the signal wiring by energizing the sub LCD 55 of the sub LCD module 5 is folded at one end (one side) of the sub LCD 55 and the other end (the other side). It is conceivable to provide a connector that is pulled out to connect to the signal wiring.

  In this case, the flexible substrate 54 is disposed on the printed circuit board by engaging and holding the locking claws 513 of the sub LCD module 5 with the receiving frame portion 28 provided on the case 2b side. Can be performed after the sub LCD module 5 is fixed to the case 2b.

  For this reason, the sub LCD 55 of the sub LCD module 5 is displaced from the predetermined position of the sub LCD holder 51 due to the repulsive force generated by the folded portion of the flexible substrate 54 when the folded portion of the flexible substrate 54 is disposed on the printed circuit board. Can be prevented.

  Further, by doing so, it is only necessary to dispose the sub LCD 55 at a predetermined position of the sub LCD holder 51, and an extra man-hour is reduced to fix the sub LCD 55 at a predetermined position of the sub LCD holder 51. You can also.

  In the first embodiment, the LCD (liquid crystal display unit) is used as the display unit. However, the present invention is not limited to this, and one or both of the sub LCD 55 and the main LCD 24 are organic EL elements. Other display means such as a display device using the above may be used.

  In the first embodiment, two short locking portions 512a and 512b are formed on one side of the frame shape of the sub LCD holder 51 assembled with the sub LCD 55, and one long locking arm 511 is formed on the opposite side. However, the present invention is not limited to this, and the number of the locking portions 512a and 512b and the number of the locking arms 511 are changed in consideration of the size and mass of the assembled sub LCD module 5. be able to.

  Further, in the first embodiment, the locking claws 514a, 514b, and 513 formed at the tips of the locking portions 512a and 512b and the locking arm 511 are all the same shape, and the corresponding receiving frame portions 28 are all the same shape. As described above, the present invention is not limited to this, and may have a different shape in consideration of the size and mass of the assembled sub LCD module 5.

  In the first embodiment, the bottom of the sub-display holder such as the sub-LCD holder 51 that holds the sub-display may have a shallow taper shape so that the thickness of the sub-LCD holder 51 decreases toward the outside. it can.

  By providing such a tapered shape, when the casing of the mobile terminal device is pressed, even if the sub display and the main display are close to each other, the force is distributed by the tapered shape, so that the main display is deformed. Or even destroying it.

  In the first embodiment, the so-called single-axis rotation type folding mobile phone has been described as the mobile terminal device, but the present invention is not limited to this, and the so-called two-axis rotation type folding mobile phone, It may be a portable terminal device such as a mobile phone provided with display means such as a liquid crystal display device on both sides of the casing, such as a so-called vertical / horizontal folding type mobile phone that can be opened and closed in two directions, the vertical direction and the horizontal direction.

(Embodiment 2)
Hereinafter, a foldable mobile phone 200 which is a mobile terminal device according to Embodiment 2 of the present invention will be described.

  In the first embodiment of the present invention, a so-called single-axis rotation type foldable mobile phone has been mainly described. However, in the second embodiment of the present invention, the present invention is opened and closed in two directions, the vertical direction and the horizontal direction. The case where the present invention is applied to a so-called vertical and horizontal folding type mobile phone 200 will be further described. Note that parts not particularly mentioned are the same as those in the first embodiment.

  FIG. 8 is a diagram for explaining the appearance and usage of the foldable mobile phone according to Embodiment 2 of the present invention. As shown in FIG. 8A, the telephone or mail function of the foldable mobile phone 200 can be used ("Communicate") with the foldable mobile phone 200 opened in the vertical direction.

  Further, as shown in FIG. 8B, the TV function and the Internet browsing function of the foldable mobile phone 200 can be used with the foldable mobile phone 200 opened in the horizontal direction (“view”).

  Furthermore, as shown in FIG. 8C, with the foldable mobile phone 200 closed, the camera function can be used as if it were a digital still camera (“shoot”). That is, it has three easy-to-use states (or styles) depending on the function.

  FIG. 9 is a diagram for explaining how to “shoot” out of the appearance and usage of the foldable mobile phone according to Embodiment 2 of the present invention. As shown in FIG. 9, the foldable mobile phone 200 is closed, and a large sub LCD 55 is disposed outside the second housing 2, and the camera unit 60 is disposed outside the first housing 1. The shutter key 70 is disposed on the side surface of the first housing 1.

  Since the foldable mobile phone 200 according to the second embodiment can increase the size of the sub LCD 55 as described in the first embodiment, the user can watch the large sub LCD 55 in a closed state as shown in FIG. Shooting can be performed using the camera unit 60. That is, the camera function can be used as if it were a digital still camera.

  Further, unlike a normal digital still camera, the camera function can be used even when the foldable mobile phone 200 is opened sideways as shown in FIG. 9B. For example, since the large sub LCD 55 and the camera unit 60 can be photographed while facing the user, it is convenient when used for so-called self-portrait.

  In addition, as shown in FIG. 9C, it is possible to take a picture using the camera unit while viewing the main LCD 24 which is usually larger than the sub LCD 55.

  As described above, according to the foldable mobile phone 200 that is the mobile terminal device according to the second embodiment, in addition to the effects of the foldable mobile phone 100 according to the first embodiment, three easy-to-use functions are provided according to functions. A camera function that has a state (or style) and is easy to use can be realized.

  A portable terminal device according to the present invention is a portable terminal device in which a main display is arranged on one side of a casing and a sub display is arranged on the other side, and when a large external force is applied to the portable terminal device, Alternatively, the main LCD can be prevented from being deformed or broken, and can be reduced in thickness or weight.

  Furthermore, even when the sub display is enlarged, the stress applied to the sub display when the sub display module is attached to the second housing can be reduced, and damage to the sub display can be prevented. Therefore, the mobile terminal device according to the present invention is useful as a mobile terminal device such as a mobile phone, a PDA, a notebook personal computer, and a portable game machine.

1 is a schematic external perspective view showing a closed state of a foldable mobile phone according to Embodiment 1 of the present invention. FIG. Sectional drawing of the 2nd housing | casing of the foldable mobile telephone in Embodiment 1 of this invention 1 is a schematic exploded perspective view showing an assembly of a sub LCD holder and a sub LCD of a foldable mobile phone according to Embodiment 1 of the present invention. FIG. FIG. 3 is a schematic perspective view of a receiving frame portion formed on a cover in which a latching claw of the sub LCD holder of the foldable mobile phone according to Embodiment 1 of the present invention is engaged. Schematic explanatory view showing a state in which the sub LCD module is attached to the receiving frame portion of the cover in the first embodiment of the present invention. Sectional drawing of the 2nd housing | casing which shows the holding state of the sub LCD module of the foldable mobile telephone in Embodiment 1 of this invention Sectional drawing of the 2nd housing | casing which shows the holding state of the sub LCD module of the foldable mobile telephone in Embodiment 1 of this invention The figure explaining the external appearance and usage of the foldable mobile phone in Embodiment 2 of the present invention The figure explaining the usage of "taking a picture" of the appearance and usage of the foldable mobile phone according to the second embodiment of the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 1st housing | casing 2 2nd housing | casing 2a Cover 2b Case 21a Main LCD panel 21b Sub LCD panel 22 Backlight reflecting plate 23 Main LCD light guide plate 24 Main LCD
25 Main LCD holder 28 Receiving frame part 28a Supporting part 28b Connecting part 3 Hinge part 4 Printed circuit board 5 Sub LCD module 51 Sub LCD holder 511 Locking arm 512a, 512b Locking part 513, 514a, 514b Locking claw 515 Flange part 53 Light guide plate for sub LCD 54 Flexible substrate 55 Sub LCD
56 Sponge for dust protection 60 Camera part 70 Shutter key 100,200 Foldable mobile phone

Claims (4)

A first housing having an operation unit and a control unit; a second housing having a main display disposed on one surface of the housing and a sub-display disposed on the other surface; and the first housing A portable terminal device, wherein the main display and the sub-display are arranged at positions where at least a part of the main display and the sub-display overlap each other in the vertical direction.
A sub-display holder for holding the sub-display, wherein a locking arm having a locking claw formed at the tip is provided on the outer periphery;
A receiving frame portion disposed at a position corresponding to the position of the locking claw of the second housing,
A portable terminal device, wherein the sub display holder is held in the second casing by loosely engaging the locking claws with the receiving frame portion. The said sub display holder is provided with the latching | locking part shorter than the said latching arm in the outer peripheral part of the opposite side of the outer peripheral part in which the said latching arm was provided. Mobile terminal device. The portable terminal device according to claim 1, wherein the sub display holder is provided with a flange portion on an outer peripheral portion on a side opposite to an outer peripheral portion on which the locking arm is provided. The sub-display is provided with a connector for connecting an electric signal through a flexible wiring,
The portable terminal device according to claim 1, wherein the locking arm straddles the connector or a signal wiring connected to the connector.

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