JP2011205539A - Portable terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable terminal including a display holding structure in which a housing including a display can be made thin.SOLUTION: A portable terminal includes: housings 11, 17, 19 forming a prescribed space; a display 4 which is comprised of a display surface and a back surface that is a reverse side of the display surface, and accommodated in the space; an electronic component 16 accommodated in the space at a back surface side of the display 4; and a display holding member 15 having a notched member which is obtained by notching a shape approximately corresponding to an external shape of the electronic component 16 and has a thickness approximately corresponding to a thickness of the electronic component 16.

Description

  The present invention relates to a portable terminal, and more particularly to a portable terminal having a display holding structure suitable for thinning.

  Each portable terminal accommodates a necessary electronic component inside the housing and a holding member that holds the electronic component as necessary. For example, a display that displays text and images is disposed in the casing by arranging the display surface facing the front side of the casing and holding the opposite surface of the display plane by a holding member inside the casing ( For example, see Patent Document 1.)

JP 2004-297690 A

  Today, it is essential to reduce the size, thickness and weight of mobile terminals. For this reason, it is preferable that the electronic component accommodated in the housing is small and thin, and the number of components is preferably as small as possible.

  The display holding member described above is used to protect the display from external factors such as impact, and requires a certain degree of strength and rigidity. In addition, since electronic parts such as a flexible printed circuit board for connecting the display and the main board are arranged inside the housing, local stress is caused by contact with these electronic parts due to external factors. May occur. For this reason, the display holding member needs to be held on a uniform surface that is not subjected to local stress due to external factors.

  In addition, miniaturization, thinning, and weight reduction of mobile terminals are required, but an increase in display size is also required to improve visibility. As a result of an increase in the size of the display, the holding member that holds the display is also increased in size.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a portable terminal having a display holding structure capable of realizing a reduction in the thickness of a casing having a display.

  In order to solve the above-described problem, a mobile terminal according to the present invention includes a housing that forms a predetermined space, a display surface, and a back surface that is the opposite surface of the display surface, and is a display that is accommodated in the space. An electronic component housed in the space on the back side of the display, and a notch member having a shape substantially corresponding to the outer shape of the electronic component and a thickness substantially corresponding to the thickness of the electronic component The display holding member having the above is provided.

  The portable terminal according to the present invention can realize a reduction in the thickness of a housing provided with a display.

The perspective view which shows an external appearance structure when it is set as the state (closed state) which closed the slide-type portable terminal. The perspective view which shows the external appearance structure seen from the front side when it is set as the state (open state) which opened the slide type portable terminal. The perspective view which shows the external appearance structure seen from the back side when it is set as the state (open state) which opened the slide-type portable terminal. The disassembled perspective view of the upper housing | casing of the portable terminal in this embodiment. The external appearance perspective view which shows especially the display cushion shown in FIG. The disassembled perspective view of the display cushion of FIG. Sectional drawing between VII-VII of the display cushion shown in FIG. Sectional drawing between VIII-VIII of the display cushion shown in FIG. Sectional drawing between IX-IX of the display cushion shown in FIG. The disassembled perspective view which shows the modification of the 4th member of a display cushion.

  An embodiment of a portable terminal according to the present invention will be described with reference to the accompanying drawings.

  1 to 3 are perspective views showing an external configuration of a sliding portable terminal 1 which is an example of a portable terminal according to the present invention.

FIG. 1 is a perspective view showing an external configuration when the sliding portable terminal 1 is in a closed state (closed state).
FIG. 2 is a perspective view showing an external configuration viewed from the front side when the sliding portable terminal 1 is in an open state (open state).
FIG. 3 is a perspective view showing an external configuration viewed from the back side when the sliding portable terminal 1 is in an open state (open state).

  The mobile terminal 1 includes a lower housing 2 as a first housing and an upper housing 3 as a second housing stacked on the lower housing 2.

  The upper housing 3 is provided with a display 4 that occupies most of the front surface. The surface of the upper housing 3 on which the display 4 is provided is referred to as the front surface of the mobile terminal 1, and the opposite surface is referred to as the back surface of the mobile terminal 1. The display 4 is a display composed of, for example, an LCD (Liquid Crystal Display), an organic EL (ElectroLuminescence Display) display, or an inorganic EL display.

  An operation key 5 that is exposed and usable when the mobile terminal 1 is in an open state is disposed on the lower housing 2.

  The upper housing 3 and the lower housing 2 are slid in the directions of arrows X1 and X2 (see FIGS. 1 and 2) by the slide mechanism 6. Specifically, when the upper housing 3 is slid in the arrow X1 direction when the mobile terminal 1 is in the closed state in FIG. 1, the mobile terminal 1 transitions to the open state in FIG. In addition, when the upper housing is slid in the direction of the arrow X2 in the open state of FIG. 2, the portable terminal 1 shifts to the closed state of FIG.

  FIG. 4 is an exploded perspective view of the upper housing 3 of the mobile terminal 1 in the present embodiment.

  The outer appearance of the upper housing 3 is mainly formed by the panel 11, the case 17, and the sheet metal 19. The panel 11, the case 17, and the sheet metal 19 form a space for accommodating the display 4 and the like. In this space, the display 4, the display cushion 15, and the flexible printed circuit board 16 are mainly accommodated.

  The panel 11 is a transparent member facing the display surface side of the display 4 housed in the upper housing 3. The outer peripheral edge portion of the panel 11 is bonded to the receiving portion 17 a of the case 17 by the panel double-sided tape 13.

  The case 17 is a member that forms the outer surface of the upper housing 3. The outer peripheral edge portion of the case 17 is bonded to the receiving portion 19 a of the sheet metal 19 by the thermocompression bonding tape 18. Further, the sheet metal 19 is exposed to the back side of the upper housing 3 when the mobile terminal 1 is in the open state (see FIG. 3).

  The display 4 is bonded to a display cushion 15 as a display holding member and is held from the back (opposite to the display surface) side, and is housed inside the upper housing 3 with the sheet metal 19 as a seating surface. Further, the display 4 is in contact with the panel 11 via a display sponge 12 as an impact buffer.

  The flexible printed circuit board 16 transmits an electrical signal by connecting the display 4 accommodated in the upper housing 3 and an electronic component such as a main substrate (not shown) accommodated in the lower housing 2. The flexible printed circuit board 16 is disposed between the sheet metal 19 and the display 4 (space on the back side of the display 4), and the thickness thereof is absorbed by the display cushion 15. The flexible printed circuit board 16 is provided with tape application sites 16b, 16c, and 16e to which the conductive copper foil tape 20 is applied for various purposes (electrical connection, radio wave shield, etc.). Further, the flexible printed circuit board 16 is provided with stacked portions 16a and 16d in which a plurality of flexible printed circuit boards 16 are stacked.

  The flexible printed circuit board 16 is formed with the tape application parts 16b, 16c, 16e and the laminated parts 16a, 16d, thereby forming a part having a thickness larger than the thickness of the flexible printed circuit board 16 itself. In addition, the thickness of the lamination | stacking site | parts 16a and 16d of the flexible printed circuit board 16 shall be larger than the thickness of the tape application site | parts 16b, 16c, and 16e.

  The display cushion 15 has a certain cushioning property (elasticity, shock buffering property) and a function of holding the display. The display cushion 15 is a member in which a plurality of members are laminated and integrated so as to have a thickness corresponding to the thickness of the flexible printed circuit board 16.

  FIG. 5 is an external perspective view particularly showing the display cushion 15 shown in FIG.

  FIG. 6 is an exploded perspective view of the display cushion 15 of FIG.

  The display cushion 15 includes first to fourth members 15a to 15d. The first member 15a, the second member 15b, and the fourth member 15d are cut out in a shape corresponding to the outer shape of the flexible printed circuit board 16, and correspond to the outer shapes of the parts having different thicknesses of the flexible printed circuit board 16. A plurality of cutout members having cutout shapes. The third member 15c is a cushion member that holds the display 4 from the back side with a cushioning property. The first to fourth members 15a to 15d preferably have substantially the same outer shape as the display 4 respectively. This is because the stress applied to the display 4 can be made uniform.

  The first member 15 a is an adhesive member having adhesiveness on both sides, in which a shape corresponding to the outer shape of the flexible printed board 16 that overlaps the display 4 when the upper housing 3 is stored is cut out. The shape of the notch is a shape that considers not only the outer shape of the flexible printed circuit board 16 but also the outer shape of the copper foil tape 20. In the present embodiment, the first member 15a absorbs the thickness of the flexible printed board 16 itself.

  The second member 15b is an adhesive member having adhesiveness on both sides, in which a shape corresponding to the outer shape of the copper foil tape 20 attached to the flexible printed circuit board 16 is cut out. In the present embodiment, the second member 15b absorbs the thickness of the tape application portions 16b, 16c, and 16e where the copper foil tape 20 is attached to the flexible printed board 16.

  The third member 15c is a member in which a notch portion is not formed, and is a cushion member intended mainly to enhance impact buffering properties.

  The fourth member 15d is an adhesive member having adhesiveness on both sides, in which a shape corresponding to the outer shape of the overlapping portion of the two flexible printed boards 16 is cut out. The fourth member 15 d is formed with a notch having a shape corresponding to the outer shape of the portion having the largest thickness in the flexible printed circuit board 16. In the present embodiment, the fourth member 15d absorbs the thickness of the laminated portions 16a and 16d where the flexible printed circuit board 16 is laminated.

  The first to fourth members 15a to 15d, which are sequentially stacked, are integrally formed by being bonded to each other by the adhesive surfaces of the first member 15a, the second member 15b, and the fourth member 15d. The display cushion 15 is configured. In addition, one adhesive surface of the first member 15 a disposed in the lowermost layer in FIG. 6 is bonded to the sheet metal 19. Further, one adhesive surface of the fourth member 15 d arranged in the uppermost layer in FIG. 6 is bonded to the back side of the display 4.

  Note that the first member 15a, the second member 15b, and the fourth member 15d can be made of materials used when bonding parts together with a general portable terminal for both the base material and the adhesive material. Moreover, although the 1st member 15a, the 2nd member 15b, and the 4th member 15d were set as the adhesive member which has adhesiveness on both surfaces, respectively, the 1st-4th members 15a-15d are comprised integrally, And if it can maintain the stable adhesion | attachment state with the sheet metal 19, the display cushion 15, and the display 4, it will not be restricted to the structure mentioned above.

7 is a cross-sectional view taken along the line VII-VII of the display cushion 15 shown in FIG.
FIG. 8 is a cross-sectional view taken along the line VIII-VIII of the display cushion 15 shown in FIG.
FIG. 9 is a cross-sectional view taken along the line IX-IX of the display cushion 15 shown in FIG.

  In order to facilitate understanding of the positional relationship between each cut surface in FIG. 5 and the flexible printed circuit board 16, the corresponding cut surfaces are also shown in the first member 15a in FIG.

  7 shows a structure in which the display cushion 15 mainly absorbs the thickness of the laminated portion 16a and the tape application portion 16b (both see FIG. 4) of the flexible printed circuit board 16.

  The display cushion 15 absorbs the thickness of the flexible printed circuit board 16 itself at the cutout portion of the first member 15a. Moreover, the display cushion 15 absorbs the thickness of the tape application site | part 16b where the copper foil tape 20 was affixed in the notch part of the 2nd member 15b. Further, the display cushion 15 forms a surface having cushioning properties with respect to the flexible printed circuit board 16 by the third member 15c. Further, the thickness of the second flexible printed circuit board 21 generated via the display cushion 15 is absorbed in the cutout portion of the fourth member 15d.

  8 shows a structure in which the display cushion 15 mainly absorbs the thickness of the laminated portion 16d (see FIG. 4) of the flexible printed circuit board 16.

  Furthermore, FIG. 9 shows a structure in which the display cushion 15 mainly absorbs the thickness of the tape application site 16c (see FIG. 4) of the flexible printed circuit board 16.

  According to this portable terminal 1, since the thickness of the flexible printed circuit board 16 is absorbed by the plurality of members that form the display cushion 15, a uniform holding surface (contact surface) of the display 4 can be formed. For this reason, generation | occurrence | production of a local stress can be suppressed when the portable terminal 1 receives an impact by dropping etc.

  Moreover, since the portable terminal 1 can disperse the stress applied to the display 4 by the display cushion 15 having a simple configuration, it is not necessary to provide a display holder made of a metal such as stainless steel or magnesium alloy. For this reason, thickness reduction and weight reduction of the upper housing | casing 3 of the portable terminal 1 are realizable.

  In the present embodiment, the example in which the thickness of the flexible printed circuit board 16 is suitably absorbed and the holding surface of the display 4 is made uniform has been described. However, the influence of other electronic components housed in the upper housing 3 is affected. In consideration of this, the number of stacked display cushions 15 and the shape of the notches can be determined.

  Here, the display cushion 15 and the display 4 are bonded by the adhesive surface of the fourth member 15d. If the display cushion 15 and the display 4 are directly bonded in this way, it is not easy to peel them again. For example, when there is a deviation in the assembly of the display 4 and the display cushion 15 or when a defect is found in the display 4 or the display cushion 15 after the assembly, it is necessary to peel and reassemble. However, when it is difficult to separate parts, both the display 4 and the display cushion 15 cannot be reused, which is not preferable from the viewpoint of cost.

  Therefore, the fourth member 15d may have a function of easily separating the display 4 and the display cushion 15 from each other.

  FIG. 10 is an exploded perspective view showing a modification of the fourth member 15 d of the display cushion 15.

  The fourth member 50 includes a pair of adhesive members 51 and a nonwoven fabric 52 sandwiched between the adhesive members 51. The fourth member 50 can be adhered to the third member 15 c and the display 4 because the pair of adhesive members 51 has adhesiveness on both surfaces. Further, when the display 4 and the display cushion 15 are separated, the nonwoven fabric 52 is easily peeled off from the adhesive member 51. For this reason, when there is a deviation in the assembly of the display 4 and the display cushion 15, the display cushion 15 can be peeled off from the display 4 and the display 4 can be reassembled with another display cushion 15. It is valid.

  In addition, although the 4th member 50 demonstrated the example in which the nonwoven fabric 52 was inserted | pinched, you may apply the fibrous member (fibrous member) which can be easily peeled with the adhesive members 51 other than the nonwoven fabric 52, for example. Moreover, although the example in which the fourth member 50 of the display cushion 15 has the function of absorbing the thickness of the flexible printed circuit board 16 and the function of facilitating peeling from the display 4 has been described, the display cushion 15 and the display 4 You may make it provide the member for peeling in which fibrous members, such as a nonwoven fabric, were pinched | interposed into the adhesive surface with a back surface.

  In this embodiment, the example which applied the portable terminal to the slide-type portable terminal 1 was demonstrated. However, the present invention is not limited to the slide type and can also be applied to a portable terminal having various forms such as a foldable portable terminal and a straight portable terminal.

DESCRIPTION OF SYMBOLS 1 Mobile terminal 2 Lower housing | casing 3 Upper housing | casing 4 Display 5 Operation key 11 Panel 12 Display sponge 13 Panel double-sided tape 15 Display cushion 16 Flexible printed circuit board 16a, 16d Laminated | stacking site | part 16b, 16c, 16e Tape sticking site | part 17 Case 18 Thermocompression bonding Tape 19 Sheet metal 20 Copper foil tape 21 Second flexible printed circuit board

Claims (7)

A housing forming a predetermined space;
A display surface and a back surface opposite to the display surface, the display housed in the space;
Electronic components housed in the space on the back side of the display;
A portable terminal comprising a display holding member having a cutout member having a shape substantially corresponding to the outer shape of the electronic component and a thickness substantially corresponding to the thickness of the electronic component. The mobile terminal according to claim 1, wherein the display holding member further includes a cushion member that holds the display from the back side with a cushioning property. The portable terminal according to claim 1, wherein the electronic component is a flexible printed circuit board. The flexible printed circuit board has portions with different thicknesses,
The portable terminal according to claim 3, wherein the display holding member includes a plurality of the cutout members in which shapes substantially corresponding to the outer shapes of the portions having different thicknesses of the flexible printed circuit board are cut out. The portable terminal as described in any one of Claims 1-4 further provided with the member for peeling by which the fibrous member was pinched | interposed into the adhesive surface of the said display holding member and the back surface of the said display. The portable terminal according to claim 5, wherein the display holding member also serves as the peeling member. The mobile terminal according to claim 1, wherein the display holding member has an outer shape substantially the same as an outer shape of the display.

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