JP2004309699A - Display device and holder therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device which hardly gives rise to a failure etc., of a display while reducing its thickness, and a holder therefor. <P>SOLUTION: The liquid crystal display device 1 is constituted to have a liquid crystal display 10 and an LCD (liquid crystal display) holder 20 for holding the same. The LCD holder 20 comprises a two-layered structure integrated by two color molding with a cushion section 21 made of a soft material like a rubber-based resin and a pedestal section 22 made of a rigid material to be integrated therewith. The liquid crystal display 10 is attached by means of a tacky adhesive sheet 30 to the cushion section 21. Even if an external force, such as impact, is exerted to the LCD holder 20, the external force is absorbed by the cushion section 21 and therefore the external force exerted to the display 10 is reduced. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a display device and a holder thereof, and more particularly, to a display device and a holder thereof, which make the display device less susceptible to damage or the like due to external impact while achieving a reduction in thickness.
[0002]
[Prior art]
For example, in a portable terminal device such as a portable telephone or a PHS (Personal Handyphone System) telephone, a small liquid crystal display (LCD) is provided on an operation surface or the like in order to display a telephone directory, an e-mail, a received image, an image captured by a mounted camera, and the like. : Liquid Crystal Display).
[0003]
FIG. 5 shows a configuration of a conventional liquid crystal display device. Here, a liquid crystal display device of a mobile phone will be described.
A liquid crystal display 101 driven by a display drive circuit (not shown) or the like is mounted on a holder 102, and the holder 102 is arranged near a printed circuit board 103. An electronic circuit and electronic components (not shown) for driving the liquid crystal display 101 are mounted on the printed circuit board 103. The liquid crystal display 101 includes an LCD main body, an LED (light emitting diode) for a backlight (not shown), and a light guide by a translucent resin for uniformly applying light from the LED to the rear surface of the liquid crystal display 101. It is a unit in which members (not shown) are integrated.
[0004]
The holder 102 is formed by molding with a hard resin material, and has a recess having an inner size corresponding to the outer shape of the liquid crystal display 101. The liquid crystal display 101 is fixed in the recess using a double-sided adhesive tape 104 or the like. The printed circuit board 103 is attached to a chassis (not shown) or the like.
[0005]
After the liquid crystal display 101 is attached as shown in FIG. 5, the upper case (in the case of a foldable mobile phone) or the front case (in the case of a straight mobile phone) forming the housing of the mobile phone is covered, The mobile phone is completed by attaching all the other case parts.
[0006]
Since mobile phones and the like are required to be reduced in size and weight, thorough weight reduction is required for all electronic components, as well as housings, substrates, and component mounting members. Moreover, since mobile phones and the like are carried on a daily basis, there is a possibility that they may be roughly handled. Therefore, the housing, substrate, mounting members, etc. have sufficient strength while reducing the weight. Is required. There is also a demand for improvement in mass productivity and reduction in the number of assembly steps due to cost reduction.
[0007]
Liquid crystal display devices mounted on mobile phones and the like are also required to be smaller and thinner. However, since the configuration is such that a polarizing plate and a glass substrate are combined, the mobile phone may be dropped, When an external force such as an impact is applied, the polarizing plate or the glass substrate may be broken or damaged. Therefore, a structure and a design that can protect the liquid crystal display from impact or the like are required.
[0008]
[Patent Document 1]
JP-A-7-104248
[Problems to be solved by the invention]
However, according to the conventional liquid crystal display device, in the configuration of FIG. 5, when the gap between the liquid crystal display and the inner periphery of the frame or the holder is reduced for miniaturization, an external force such as a shock causes the liquid crystal display to have an external force. And the liquid crystal display is easily damaged or broken. Further, in the configuration of Patent Document 1, since the soft member is partially provided, the thickness must be increased in order to enhance the buffering effect. Therefore, the thickness of the display unit is increased by the thickness of the soft member, and the thickness is reduced. Can not be achieved. The above problem is common to not only liquid crystal displays but also displays having a flat and thin configuration.
[0010]
SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a display device and a holder for the display device, which make the display device less likely to be damaged while reducing the thickness.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, the present invention has, as a first feature, a display device having a display surface on one side and a cushion portion having a concave portion for installing the display device formed of a soft material as an upper layer. A holder in which a pedestal portion made of a hard material is integrated with the cushion portion by two-color molding, and the display device is attached to the concave portion of the cushion portion by an adhesive member. Provide equipment.
[0012]
According to this configuration, since the cushion portion made of a soft material and the pedestal portion made of a hard material are integrated by two-color molding, if the indicator is mounted on the cushion portion, the holder is subjected to an external force such as an impact. Even if the shock is applied, the shock and the like are absorbed by the cushion portion and are hardly transmitted to the display device, so that a liquid crystal display device which is less likely to damage the display device can be obtained. In addition, since the cushion portion and the pedestal portion are integrated by two-color molding and the cushion portion is not made as a separate component, high positioning accuracy can be obtained and cost can be reduced.
[0013]
In order to achieve the above object, the present invention provides, as a second feature, a display device configured by mounting a display device, and in this state, a holder attached to a housing or case of a device employing the liquid crystal display device. A cushion portion made of a soft material having a concave portion for installing the display, and a pedestal portion made of a hard material integrated with the cushion portion by two-color molding so that the cushion portion becomes an upper layer. And a holder provided with:
[0014]
According to this configuration, the cushion portion made of a soft material and the pedestal portion made of a hard material are integrated by two-color molding to form the holder. Therefore, even if an external force such as an impact is applied to the holder, the Is absorbed by the cushion portion, and it is difficult for an impact or the like to be transmitted to the display device attached to the cushion portion, and it is possible to prevent the display device from being damaged or the like. In addition, since the cushion portion and the pedestal portion are integrated by two-color molding, high positioning accuracy can be obtained and cost can be reduced.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 and 2 show a display device and its holder according to an embodiment of the present invention.
The liquid crystal display device 1 includes a liquid crystal display 10 and an LCD holder 20. The liquid crystal display 10 has a unit structure in which an LED and a light guide member are integrated with a liquid crystal main body. The liquid crystal display 10 is attached to an LCD holder 20. The LCD holder 20 is formed with a concave portion having an inner size on which the liquid crystal display 10 can be placed. The LCD holder 20 has a two-layer structure and includes a pedestal portion 21 serving as a base and a cushion portion 22 formed on the upper surface of the pedestal portion 21, and is made by two-color molding.
[0016]
The base 21 is made of a hard material such as an ABS (acrylonitrile / butadiene / styrene) resin, and the cushion 22 is made of a soft material such as an elastomer resin or a rubber resin. The thickness of the pedestal portion 21 and the cushion portion 22 is determined in consideration of the overall thickness, the required strength, and the buffer resistance.
[0017]
As shown in FIG. 1, the liquid crystal display 10 is adhesively fixed in the cushion portion 22 using an adhesive sheet 30 having adhesive properties on both sides. As the adhesive sheet 30, an adhesive, a double-sided adhesive (adhesive) tape, or the like can be used.
[0018]
FIG. 3 is an exploded view of the liquid crystal display device.
At the time of assembly, an adhesive sheet 30 having a size slightly larger than the liquid crystal display 10 is prepared. The LCD holder 20 is placed on a workbench or the like with the cushion part 22 facing upward, and the adhesive sheet 30 is positioned and adhered on the cushion part 22. Next, the liquid crystal display 10 is stuck on the adhesive sheet 30 so as to fit in the cushion portion 22. As described above, the liquid crystal display 10 and the LCD holder 20 are assembled in the state shown in FIG. 2, and one unit is completed. The unit completed in this way is fitted and attached to the housing, or attached using a dedicated jig.
[0019]
Since the lower surface and the side surfaces of the liquid crystal display device 10 are surrounded by the cushion portion 22, the same effect as when a cushion material is inserted around the liquid crystal display device 10 is obtained. Can be protected. For example, when the liquid crystal display 10 and the LCD holder 20 shown in FIG. 2 are applied to a mobile phone, when the mobile phone is dropped or an external shock is applied, an external force is applied to the LCD holder via the case and the housing. Although the shock is transmitted to the liquid crystal display 20, the shock and the like are absorbed by the cushion portion 22, so that the liquid crystal display 10 is not affected and the liquid crystal display 10 can be prevented from being damaged. Further, since the cushion portion 22 is made by two-color molding, the tolerance accuracy is good and the positioning of the liquid crystal display can be accommodated in the same manner as a conventional holder made of a hard resin. In addition, since a work process such as attaching a material corresponding to the cushion portion 22 by secondary processing for protecting the liquid crystal is not required, the number of steps can be reduced.
[0020]
FIG. 4 shows a display device and a holder according to another embodiment of the present invention. In FIG. 4, the same components as those in FIG. 2 are denoted by the same reference numerals, and redundant description will be omitted.
In the present embodiment, an LCD holder in which fixing portions 23a, 23b, 23c, 23d (each having a screw hole 24 provided) for screwing is provided at four corners of a pedestal portion 21 of the LCD holder 20 of FIG. The feature is that it is 40. The fixed portions 23a to 23d are provided with cushion portions 25a, 25b, 25c, and 25d made of the same material as the cushion portion 22 by two-color molding.
[0021]
With such a configuration, the fixing portions 23a to 23d are fixed to the housing by screws, so that even if an impact or the like is externally applied to the LCD holder 40 due to dropping or the like, the cushion portions 25a to 25d of the fixing portions 23a to 23d are provided. Absorbs shocks and the like. Further, the shock and the like transmitted from the fixing portions 23a to 23d to the pedestal portion 21 are absorbed by the cushion portion 22. Therefore, it is possible to greatly reduce the impact or the like applied to the case or the housing from reaching the liquid crystal display 10, and to make the liquid crystal display less likely to be damaged while reducing the thickness of the unit. It becomes possible.
[0022]
In the above embodiments, the display is a liquid crystal display. However, a display based on another operation principle, such as a thin display such as a plasma display, a field emission display (FED), and an organic EL (electroluminescence) display, is used. The present invention can also be applied to the above display device.
[0023]
Further, in each of the above embodiments, the concave portions are formed in both the cushion portion 22 and the pedestal portion 21 as shown in FIG. 1, but only the cushion portion 22 may have a concave shape. . Although the LCD holder 20 is configured such that the entire bottom surface of the concave portion serves as the installation surface, if the strength required to hold the liquid crystal display 10 is secured, a part or a large portion of the concave portion of the pedestal portion 21 is provided. The part may be hollow.
[0024]
Further, in the above embodiment, the case where the display device and the holder are applied to a mobile phone has been described. However, various portable electronic devices, for example, a personal computer, a PDA (Personal Digital Assistant) device, an electronic dictionary, and an electronic organizer , Transceivers and the like.
[0025]
【The invention's effect】
As is clear from the above, according to the display device and the holder thereof of the present invention, the holder has a structure in which the cushion portion made of a soft material and the pedestal portion made of a hard material are integrated, so that the holder has an impact or the like. Even if an external force is applied, the shock is absorbed by the cushion portion, and the impact or the like is hardly transmitted to the display device mounted on the cushion portion, and even if the display device is made thinner, the display device can be hardly damaged. Since the cushion portion and the pedestal portion are integrated by two-color molding, high positioning accuracy can be obtained. In addition, since it is not necessary to supply the cushion portion as a separate process and as a separate component, no cushion component is required and the number of attaching steps is not required, so that the cost can be reduced.
[Brief description of the drawings]
FIG. 1 is a sectional view showing a liquid crystal display device according to an embodiment of the present invention.
FIG. 2 is a perspective view illustrating a liquid crystal display device according to an embodiment of the present invention.
FIG. 3 is an exploded view of the liquid crystal display device according to the embodiment of the present invention.
FIG. 4 is a perspective view showing a liquid crystal display device according to another embodiment of the present invention.
FIG. 5 is a cross-sectional view illustrating a configuration of a conventional liquid crystal display device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Liquid crystal display device 10 Liquid crystal display 20, 40 LCD holder 21 Base part 22 Cushion part 23a, 23b, 23c, 23d Fixing part 24 Screw hole 25a, 25b, 25c, 25d Cushion part 30 Adhesive sheet 101 Liquid crystal display 102 Holder 103 Printed circuit board 104 Double-sided adhesive tape

Claims (10)

A display having a display surface on one side;
A cushion portion formed with a concave portion for installing the display device using a soft material as an upper layer, and a holder in which a pedestal portion made of a hard material is integrated with the cushion portion by two-color molding,
The display device, wherein the display device is attached to the concave portion of the cushion portion with an adhesive member. The display device according to claim 1, wherein the cushion portion is made of a rubber-based resin or an elastomer-based resin. The display device according to claim 1, wherein the pedestal portion is made of a resin material. The display device according to claim 1, wherein the pedestal portion is provided with fixing portions for screwing at four corners, and the fixing portion has a cushion portion made of a soft material. The display device according to claim 1, wherein the display is a liquid crystal display. The display device according to claim 1, wherein the adhesive member is a double-sided adhesive sheet, a double-sided adhesive tape, or an adhesive. A display device is configured by mounting the display device, and in this state, in a holder attached to a housing or a case of the device employing the display device,
A cushion portion made of a soft material in which a concave portion for installing the display is formed,
A holder made of a hard material integrated with the cushion portion by two-color molding so that the cushion portion is an upper layer. The holder according to claim 7, wherein the cushion portion is made of a rubber-based resin or an elastomer-based resin. The holder according to claim 7, wherein the pedestal portion is made of a resin material. The holder according to claim 7, wherein the pedestal portion is provided with fixing portions for screwing and fixing to the housing or the case at four corners.

Images