JP4061474B2 - Electronic equipment with a liquid crystal display - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electronic device such as a mobile phone equipped with a liquid crystal display device, and more particularly to an electronic device that can prevent malfunction of the liquid crystal display device due to static electricity.
[0002]
[Prior art]
Liquid crystal display devices having advantages such as small size, light weight, low cost, and low power consumption are mounted on many electronic devices such as mobile phones.
[0003]
On the other hand, a housing of an electronic device such as a mobile phone is required to be small, light, and inexpensive, and the housing is often made of resin.
[0004]
[Problems to be solved by the invention]
When static electricity is generated around the liquid crystal display device from the outside of the housing, the liquid crystal display device may malfunction or be damaged.
[0005]
In the past, metal materials such as magnesium were used for the housing to ensure the strength of the housing, so there was no problem of static electricity being discharged to the ground and generating static electricity in the liquid crystal display device. In consideration of the above and the problem of mass productivity, there are an increasing number of cases in which the housing is molded almost entirely of resin without containing a metal material. In recent years, since contents such as still images and moving images are displayed on a liquid crystal display device, the display range has been increased, and it tends to be more easily affected by static electricity.
[0006]
JP-A-60-70478, JP-A-63-56625, and JP-A-7-120770 disclose a configuration in which a conductive member is provided on a transparent substrate or a polarizing plate of a liquid crystal display device. However, in these structures, the liquid crystal display device has a conductive configuration to the last, and consideration is given to the generation of static electricity and the countermeasures for the entire electronic equipment housing the liquid crystal display device. It has not been.
[0007]
Therefore, an object of the present invention is to provide an electronic device that can prevent malfunction of a liquid crystal display device due to static electricity in addition to being environmentally friendly and having excellent mass productivity by having a resin casing. That is.
[0008]
[Means for Solving the Problems]
According to the present invention, a liquid crystal display panel, a casing that accommodates the liquid crystal display panel with the display range of the liquid crystal display panel exposed from the opening, and the opening that closes the opening of the casing In an electronic apparatus equipped with a liquid crystal display device having a transparent screen attached to the periphery of the part, the housing is made of resin, and has a hole around the opening, and the screen A conductive first conductive layer that extends from the surface in contact with the hole to the inner surface of the housing through the inner surface of the hole, and the screen has the first conductive layer on the surface in contact with the housing. An electronic device equipped with a liquid crystal display device including a conductive second conductive layer in contact with the liquid crystal display device can be obtained.
[0009]
According to the invention, the screen is attached to the casing with a double-sided tape or an adhesive in a state in which contact between the first conductive layer and the second conductive layer is ensured. An electronic device equipped with the liquid crystal display device can be obtained.
[0010]
Further, according to the present invention, the periphery of the hole portion of the housing slightly protrudes, and the double-sided tape or the adhesive has the same thickness as the protrusion height of the periphery of the hole portion. An electronic device equipped with the device can be obtained.
[0011]
In addition, according to the present invention, an electronic apparatus in which the first conductive layer is mounted with the liquid crystal display device including a conductive paint containing metal, a conductive ink, or a plating layer can be obtained.
[0012]
Furthermore, according to the present invention, an electronic apparatus in which the second conductive layer is mounted with the liquid crystal display device made of a conductive paint containing metal, a conductive ink, or a plated layer is obtained.
[0013]
According to the present invention, the second conductive layer is formed only outside the display range of the liquid crystal display panel, and is a mirror film made of a conductive paint containing metal, a conductive ink, or a plating layer. An electronic apparatus equipped with the liquid crystal display device can be obtained.
[0014]
In addition, according to the present invention, it is possible to obtain an electronic apparatus on which the liquid crystal display device in which the second conductive layer is a half mirror film made of a conductive paint containing metal, conductive ink, or a plating layer is obtained. .
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, with reference to the drawings, an electronic apparatus equipped with a liquid crystal display device according to an embodiment of the present invention will be described.
[0016]
An electronic device equipped with a liquid crystal display device according to an embodiment of the present invention is a mobile phone having a foldable casing. 1 to 4, the mobile phone includes a liquid crystal display module 10 including a liquid crystal display panel, and a liquid crystal display in a state where a display range of the liquid crystal display module 10 is exposed from a square hole portion 22 that is an opening. A housing 20 that houses the module 10 and a transparent screen 30 that is attached to a recess 23 around the square hole portion 22 so as to close the square hole portion 22 of the housing 20 are provided. As an actual mobile phone, a first case in which a first inner case as the case 20 and a first outer case (not shown) are combined, and a second inner and outer case (not shown) are combined. However, only the portion related to the present invention will be described here.
[0017]
The housing 20 is made of resin. The housing 20 is also provided with two holes 24 in the recess 23 around the square hole 22. Note that the number of the holes 24 may not be two.
[0018]
As shown in FIGS. 3 and 4, the housing 20 further includes a conductive first conductive layer 20 a extending from the surface in contact with the screen 30 to the inner surface of the housing 20 through the inner surface of the hole 24. ing. On the other hand, as shown in FIGS. 3 and 4, the screen 30 includes a conductive second conductive layer 30 a in contact with the first conductive layer 20 a on the surface in contact with the housing 20. When the first and second conductive layers 20a and 30a come into contact with each other, a conductive layer extending over both the screen 30 and the casing 20 is formed, so that static electricity from the outside of the mobile phone is grounded, and the liquid crystal module Ten malfunctions can be prevented.
[0019]
As shown in FIGS. 3 and 4, the screen 30 is attached to the housing 20 by the double-sided tape 40 in a state in which the contact between the first conductive layer 20 a and the second conductive layer 30 a is ensured. ing. The screen 30 may be attached with an adhesive instead of the double-sided tape.
[0020]
Further, as shown in FIGS. 3 and 4, the periphery of the hole portion of the housing 20 slightly protrudes to form a protruding portion 25. And the double-sided tape 40 is the same thickness as the protrusion height of the projection part 25 around the hole part 24 (FIG. 4). Thereby, when the screen 30 is affixed, it is possible to maintain appropriate contact between the first and second conductive layers 20a and 30a.
[0021]
The first conductive layer 20a is made of a conductive paint containing metal, conductive ink, or a plating layer.
[0022]
The second conductive layer 30 a is also made of a conductive paint containing metal, conductive ink, or a plating layer, but the second conductive layer 30 a is formed as a decorative surface only outside the display range of the liquid crystal display module 10. In some cases, a mirror film made of a conductive paint containing metal, conductive ink, or a plating layer can be used. Alternatively, when the second conductive layer 30a is also formed within the display range of the liquid crystal display module 10, a half mirror film made of a conductive paint containing metal, a conductive ink, or a plated layer is used, and the liquid crystal by the user The display module 10 is not disturbed.
[0023]
By changing the area of the first conductive layer 20a around the hole 24, the contact resistance can be changed as necessary.
[0024]
In this embodiment, a mobile phone is taken as an example. However, the present invention includes a liquid crystal display device such as a notebook personal computer, a monitor display device, a television receiver, and a game machine mounted in a resin casing. Applicable to all electronic devices.
[0025]
【The invention's effect】
The electronic device equipped with the liquid crystal display device according to the present invention has a resin casing, is environmentally friendly and has excellent mass productivity, and can prevent malfunction of the liquid crystal display device due to static electricity.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a main part of an electronic apparatus equipped with a liquid crystal display device according to an embodiment of the present invention.
FIG. 2 is a perspective view showing a main part of an electronic apparatus equipped with a liquid crystal display device according to an embodiment of the present invention.
FIG. 3 is a cross-sectional view for explaining a main part of an electronic apparatus equipped with a liquid crystal display device according to an embodiment of the present invention, showing a state before the components are combined.
FIG. 4 is a cross-sectional view showing a main part of an electronic apparatus equipped with a liquid crystal display device according to an embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Liquid crystal module 20 Case 20a 1st conductive layer 22 Square hole part 23 Recessed part 24 Hole part 25 Projection part 30 Screen 30a 2nd conductive layer 40 Double-sided tape

Claims (7)

A liquid crystal display panel, a casing for housing the liquid crystal display panel with the display range of the liquid crystal display panel exposed from the opening, and affixed to the periphery of the opening so as to close the opening of the casing In an electronic device equipped with a liquid crystal display device having a transparent screen attached,
The housing is made of resin, has a hole around the opening, and further extends from the surface in contact with the screen to the inner surface of the housing through the inner surface of the hole. 1 conductive layer,
An electronic apparatus equipped with a liquid crystal display device, wherein the screen includes a conductive second conductive layer in contact with the first conductive layer on a surface in contact with the housing. The said screen is affixed with the double-sided tape or the adhesive agent in the state which ensured the contact with a said 1st conductive layer and a said 2nd conductive layer with respect to the said housing | casing. Electronic equipment equipped with a liquid crystal display device. 3. The liquid crystal display device according to claim 2, wherein a periphery of the hole portion of the housing slightly protrudes, and the double-sided tape or the adhesive has the same thickness as a protrusion height around the hole portion. Installed electronic equipment. 4. The electronic device equipped with the liquid crystal display device according to claim 1, wherein the first conductive layer is made of a conductive paint containing metal, a conductive ink, or a plating layer. 5. The electronic device equipped with the liquid crystal display device according to claim 1, wherein the second conductive layer is made of a conductive paint containing metal, a conductive ink, or a plating layer. 6. The second conductive layer is formed only outside the display range of the liquid crystal display panel and is a mirror film made of a conductive paint containing metal, a conductive ink, or a plating layer. An electronic device including the liquid crystal display device according to any one of the above. 6. The electronic device equipped with the liquid crystal display device according to claim 1, wherein the second conductive layer is a half mirror film made of a conductive paint containing metal, conductive ink, or a plating layer.

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