JP2007226285A - Portable electronic device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent external impact from being directly transmitted to the display of a portable electronic device, while keeping the strength of the portable electronic device around the display so that even if the device is dropped inadvertently, the display will not crack. <P>SOLUTION: The portable electronic device is provided with a framed display holder 15 for fitting an LCD 14 (display) therein; a box-shaped magnesium frame 17 (metallic frame) having a frame bottom face 22 and a frame 23 surrounding the frame bottom face 22; and a cabinet 6a (display side casing) covering the LCD 14 and the magnesium frame 17. With the LCD 14 fitted into the display holder 15, the LCD 14 is caused to abut the frame bottom face 22 of the magnesium frame 17 together with the display holder 15 and held against the magnesium frame 17 to secure the LCD inside the cabinet 6a. The frame bottom face 22 of the magnesium frame 17 is curved in such a manner that it is lowest at its center. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a support structure for a display of a portable electronic device.

  The convenience of mobile phone communication, mail communication, camera photography, TV viewing, music listening, etc. has become widespread, and mobile phones are generally carried when going out.

  When you go out and take out your mobile phone, you may accidentally drop it on the ground. If dropped, scratches or cracks may occur on the casing of the cellular phone that is a resin molded product, scratches or cracks may occur on the surface of the display provided in the casing, or electrical breakdown may occur. is there.

  If the user drops the mobile phone in this way and causes an electrical failure, the user must purchase a new one. If a scratch occurs, the user feels uncomfortable and uncomfortable.

  As countermeasures against these problems, for example, Patent Document 1 includes a liquid crystal holder made of a thermoplastic resin for fixing and holding a liquid crystal, and an elastic member made of an elastic material and covering the periphery of the liquid crystal holder. The elastic member is composed of a locking claw for locking the holder to the substrate, a liquid crystal holding fixing claw for holding and fixing the liquid crystal, and a liquid crystal backstop rib for stopping the liquid crystal. A multicolor mold type liquid crystal holder is disclosed.

For example, Patent Document 2 discloses an electronic device in which a holder has a fixing protrusion that sandwiches a circuit board from both ends, and a casing has an inner wall rib that abuts the outside of the fixing protrusion on the inside thereof. In this electronic apparatus, before the impact force from the outside of the housing is transmitted to the LCD main body, the fixing protrusion of the holder can be released to the circuit board side, and the influence on the LCD main body on the upper part of the holder can be minimized.
JP 2001-264732 A JP 2002-287116 A

  However, the invention of Patent Document 1 prevents deformation and breakage during transportation, prevents deformation and breakage of the holder and nails due to drop impact in the set state with the portable terminal case, and prevents damage to the liquid crystal with a small number of parts. However, the liquid crystal and the holder are in close contact with each other.

  In the invention of Patent Document 2, a gap is provided between the holder and the side of the LCD main body to prevent the impact force from the outside of the casing from being transmitted directly through the holder, thereby suppressing the influence on the LCD main body. However, as in Patent Document 1, the liquid crystal and the holder are in close contact with each other.

  By the way, in recent years, the holder and the frame are made of a metal frame in order to reduce the weight and thickness of the mobile phone. For example, AZ91D (mainly an alloy of 9% Al, 1% Zn, and remaining Mg), which is a magnesium die cast, is often used as a metal frame. By fitting the display display into such a rigid metal frame, damage to the housing, the display substrate, and the display display is prevented when the display is dropped.

  On the other hand, when the display is brought into close contact as in the prior art, if a drop or the like occurs, the impact may be transmitted from the metal frame that bears the impact to the display, and the display may be destroyed.

  The present invention has been made in view of such points, and the object of the present invention is to maintain the strength around the display display so that the display display does not crack even if the portable electronic device is accidentally dropped. However, it is to prevent external shocks from being transmitted directly to the display.

  In order to achieve the above object, in the present invention, the shape of the bottom surface of the metal frame with which the display is in contact is a curved shape.

Specifically, in the first invention, in the portable electronic device provided with the display,
A frame-shaped display holder into which the plate-shaped display is fitted;
A box-shaped metal frame having a frame bottom surface and a frame frame surrounding the frame bottom surface;
A display-side casing covering the display and the metal frame,
The display is configured to be fixed to the inside of the display-side casing after being held in the metal frame while being in contact with the bottom surface of the metal frame together with the display holder in a state of being fitted in the display holder. And
The frame bottom surface of the metal frame has a curved shape so that the center portion is lowest.

  According to the above configuration, since the display-side casing is provided with a highly rigid metal frame, the casing and the liquid crystal side substrate are protected when an impact such as dropping is applied. On the other hand, the bottom surface of the metal frame has a curved shape so that the center portion is the lowest, so that the center portion of the display display that is covered with a transparent member such as glass and the like and the metal frame are in direct contact with each other. First, the impact when the portable electronic device falls is not easily transmitted from the metal frame to the display. Therefore, even if the portable electronic device is inadvertently dropped, the display display is prevented from being cracked.

In the second invention, the display holder includes a plurality of engaging claws protruding to the back surface side.
The metal frame includes an engagement hole into which the engagement claw is inserted.

  According to the above configuration, the display holder is firmly assembled to the metal frame by inserting the engaging claw of the display holder into the engagement hole of the metal frame, and the display holder does not come off the metal frame due to the impact of dropping. .

  In the third invention, the display substrate to which the display display is electrically connected is attached to the side surface of the metal frame opposite to the display display by the claw for locking the display holder.

  According to said structure, a display board | substrate is easily attached to a metal frame with this display holder by the nail | claw for a display holder. Since the display substrate is protected by a highly rigid metal frame, it is possible to prevent electrical failure due to the impact of dropping.

  In the fourth invention, the display holder is a resin molded product.

  According to the above configuration, the resin molded product is lower in rigidity than the metal frame and easily bends, and even when subjected to an impact such as dropping, it can easily absorb the impact from the metal frame, preventing damage to the display. Is done.

  In the fifth invention, the metal frame is formed of a magnesium frame.

  According to the above configuration, the magnesium frame is lightweight and has high rigidity. Therefore, the magnesium frame can be formed into a thin shape and is suitable as a metal frame for portable electronic devices that need to be carried.

  In the sixth invention, the portable electronic device is a mobile phone.

  According to the above configuration, a lightweight and thin mobile phone is required, and a mobile phone that is frequently carried is often unintentionally dropped. However, according to the present invention, a thin mobile phone that is resistant to impacts such as dropping. A telephone is obtained.

  As described above, with the plate-shaped display fitted in the display holder, the metal frame is brought into contact with the bottom of the frame that is curved so that the central portion is the lowest, and then inside the liquid crystal side housing. By fixing, the impact from the outside is not directly transmitted to the display display while maintaining the strength around the display display. For this reason, even if the portable electronic device is dropped carelessly, a crack is not generated in the display display, so that a portable electronic device that is resistant to impact such as dropping can be obtained.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view of a cellular phone 1 as a portable electronic device according to an embodiment of the present invention, as viewed from the right. FIG. 2 is a perspective view of the closed state of FIG. 1 as viewed from the right.

  As shown in FIGS. 1 and 2, the mobile phone 1 according to the present embodiment includes a first casing 2 as a display-side casing and a second casing 3, which are connected by a hinge portion 4. It is foldably connected. The first housing 2 is provided with a rotation mechanism 5, and the rotation mechanism 5 supports a substantially rectangular plate-like liquid crystal display unit 6 so that it can be switched between a vertically long state and a horizontally long state. The liquid crystal display unit 6 is provided with an LCD 14, a receiver unit 7, etc. on the front side, and a sub display unit 11 is provided on the back side.

  On the surface side of the second casing 3, a transmitter 8, an input button 9, a function button 10 and the like are provided.

  When making a call or e-mail, it is performed in the open state as shown in FIG. 1, and when the call or e-mail is finished, it is waited in a closed state as shown in FIG. An indication to inform you is displayed.

  Further, when watching TV or performing e-mail in the horizontally long state, although not shown, the liquid crystal display unit 6 is rotated to the horizontally long state by the rotation mechanism 5.

  FIG. 3 is a perspective view showing a magnesium frame as a metal frame of the liquid crystal display unit. FIG. 4 is a plan view of FIG.

  The liquid crystal display unit 6 in the first housing 2 is covered with a resin cabinet 6a. A magnesium frame 17 is fitted inside the cabinet 6a (see FIG. 7).

  As shown in FIGS. 3 and 4, the magnesium frame 17 is formed in a substantially rectangular plate shape, and includes a frame bottom surface 22 and a frame frame 23 surrounding the frame bottom surface 22. By adopting such a box structure, the strength as a frame (structure) is secured. The magnesium frame 17 includes, for example, a camera window 26 for positioning a camera (not shown), a screw insertion hole 27, an engagement hole 28 for fixing the display holder 15, a signal line through hole 29 for passing a signal line described later, 30, a strobe window hole 31 for positioning a strobe (not shown), a receiving part hole 32 through which the sound of the receiving part passes. The magnesium frame 17 is made of, for example, AZ91D which is a magnesium die cast.

  5 is a cross-sectional view taken along line VV in FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. FIG. 7 is an exploded perspective view of the liquid crystal display unit 6. 8 is a cross-sectional view taken along line VIII-VIII in FIG. 9 is an enlarged cross-sectional view of a part IX in FIG.

  As shown in FIGS. 5 and 6, the frame bottom surface 22 of the magnesium frame 17 is curved so that the center is the lowest.

  As shown in FIG. 7, the LCD 14 as a rectangular plate-like display is covered with a transparent member such as glass and has a relatively weak impact. The LCD 14 is held by the magnesium frame 17 in a state where the LCD 14 is fitted in a rectangular frame-shaped resin display holder 15. In this state, it is fitted inside the cabinet 6a.

  The display holder 15 is made of a resin molded product, and is provided so that, for example, four locking claws 20 protrude from the side surface. The LCD substrate 16 as a display substrate to which the LCD 14 is electrically connected is attached to the side surface of the magnesium frame 17 opposite to the LCD 14 by a locking claw 20 of the display holder 15.

  As shown in FIGS. 8 and 9, the display holder 15 is in contact with the frame bottom surface 22 on the back surface thereof, but the central portion of the LCD 14 is not in contact with the frame bottom surface 22 at all, and only the periphery thereof is the frame. It is in contact with the bottom surface 22.

-Assembly procedure of liquid crystal display-
Next, the assembly procedure of the liquid crystal display unit 6 will be described. First, the LCD 14 is assembled into the display holder 15 as shown in FIG.

  Next, the four locking claws 20 of the display holder 15 are inserted into the four engagement holes 28 of the magnesium frame 17 to fix and position the display holder 15.

  Next, the LCD substrate 16 is attached from the back side of the magnesium frame 17. At this time, the signal line 19 extending from the LCD 14 is connected to the LCD substrate 16 through the signal line through hole 29 of the magnesium frame 17. The display substrate 15 and the LCD substrate 16 are fixed to the magnesium frame 17 by fitting the LCD substrate 16 together with the magnesium frame 17 with the four locking claws 20 of the display holder 15.

  Finally, the LCD 14, the display holder 15, the LCD substrate 16, and the magnesium frame 17 are assembled into the cabinet 6 a of the liquid crystal display unit 6, and screws (not shown) are inserted into the screw insertion holes 27 of the magnesium frame 17. Screw the frame mounting boss 18 and attach the transparent display cover 13.

-Effect of the embodiment-
As described above, according to the mobile phone 1 according to the present embodiment, the plate-shaped LCD 14 is fitted into the display holder 15 and the magnesium frame 17 is in contact with the frame bottom surface 22 that is curved so that the central portion is lowest. By fixing it inside the cabinet 6a after being in contact with it, the impact from the outside is not directly transmitted to the LCD 14 while maintaining the strength around the LCD 14. For this reason, even if the mobile phone 1 is accidentally dropped, the impact is first transmitted to the periphery of the LCD 14, thereby preventing the glass constituting the LCD 14 from breaking due to the impact entering the center portion. . Therefore, the mobile phone 1 that is resistant to impacts such as dropping can be obtained while keeping the thickness of the entire first casing 2 (liquid crystal display unit 6) thin.

(Other embodiments)
The present invention may be configured as follows with respect to the above embodiment.

  That is, in the above embodiment, the frame bottom surface 22 of the magnesium frame 17 is curved so that the center is the lowest in any of the cross sections of FIG. 5 and FIG. You may make it curve so that the center of the frame bottom face 22 may become the lowest in the cross section of either one. In short, the center of the LCD 14 and the frame bottom 22 need not be in direct contact.

  In the above embodiment, an example of the LCD 14 has been shown, but the display unit 6 may include an organic EL display.

  In the embodiment described above, the rotation mechanism 5 is provided so that the first housing 2 can be rotated from the vertically long state to the horizontally long state, but the rotation mechanism 5 may not be provided. Moreover, although the hinge part 4 is provided and the 1st housing | casing 2 and the 2nd housing | casing 3 are connected so that folding is possible, a straight type mobile telephone may be sufficient.

  In the above-described embodiment, a mobile phone is particularly used as the mobile electronic device, but a PHS, a PC, a mobile tool, an electronic dictionary, a calculator, a copying machine, or the like may be used.

  In addition, the above embodiment is an essentially preferable illustration, Comprising: It does not intend restrict | limiting the range of this invention, its application thing, or a use.

  As described above, the present invention is useful for portable electronic devices such as a mobile phone provided with a display.

It is the perspective view which looked at the opened state of the mobile phone concerning the embodiment of the present invention from the right direction. It is the perspective view which looked at the closed state of FIG. 1 from the right direction. It is a perspective view which shows a magnesium frame. FIG. 4 is a plan view of FIG. 3. It is the VV sectional view taken on the line of FIG. It is the VI-VI sectional view taken on the line of FIG. It is a disassembled perspective view of a liquid crystal display part. It is the VIII-VIII sectional view taken on the line of FIG. It is the IX section expanded sectional view of FIG.

Explanation of symbols

1 Mobile phone (mobile electronic device)
2 First housing (display-side housing)
14 LCD (display display)
15 Display holder 16 LCD substrate (Display substrate)
17 Magnesium frame (metal frame)
20 Locking Claw 22 Frame Bottom 23 Frame Frame 28 Engagement Hole

Claims (6)

In a portable electronic device equipped with a display,
A frame-shaped display holder into which the plate-shaped display is fitted;
A box-shaped metal frame having a frame bottom surface and a frame frame surrounding the frame bottom surface;
A display-side casing covering the display and the metal frame,
The display is configured to be fixed to the inside of the display-side casing after being held in the metal frame while being in contact with the bottom surface of the metal frame together with the display holder in a state of being fitted in the display holder. And
A portable electronic device characterized in that a frame bottom surface of the metal frame has a curved shape so that a central portion is lowest. The portable electronic device according to claim 1,
The display holder includes a plurality of engaging claws protruding to the back side,
The portable electronic device according to claim 1, wherein the metal frame includes an engagement hole into which the engagement claw is inserted. The portable electronic device according to claim 2,
A portable electronic device, wherein a display substrate to which the display display is electrically connected is attached to a side surface of the metal frame opposite to the display display by a locking claw of the display holder. The portable electronic device according to any one of claims 1 to 3,
The portable electronic device, wherein the display holder is a resin molded product. The portable electronic device according to any one of claims 1 to 4,
The said metal frame is comprised with the magnesium frame, The portable electronic device characterized by the above-mentioned. The portable electronic device according to any one of claims 1 to 5,
A portable electronic device, which is a portable electronic device.

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