JP2008102280A - Liquid crystal display device and support structure of liquid crystal display panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid crystal display device and a support structure of liquid crystal display panel capable of preventing breakage of the liquid crystal display device by reducing a load applied to a liquid crystal display panel supported by a panel support frame. <P>SOLUTION: In the liquid crystal display device 1 where the liquid crystal display panel 11 is supported by the panel support frame 12 attached to a substrate 13, the panel support frame 12 is provided with: a panel attachment part 124 in which the liquid crystal display panel 11 is attached; and an elastic deformation part 1222 which is disposed between a substrate attaching fixation part 123 attached and fixed to one surface of the substrate 13 and a panel attachment part 124 and is formed in a bent form. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a support structure for a liquid crystal display panel and a liquid crystal display device.

Conventionally, a mobile phone, a portable television, a PDA (personal digital assistant), and the like are equipped with a liquid crystal display device that displays various kinds of information.
In the liquid crystal display device 301, for example, a liquid crystal display panel 311 is supported by a metal panel support frame 312 attached and fixed to the surface of a substrate 313, and the liquid crystal display panel 311 is made of resin so as to cover the edge of the liquid crystal display panel 311. A housing (cover member) 302 is attached (see FIG. 6). Specifically, the panel support frame 312 is continuous with the board mounting / fixing portion 3123 screwed to the board 313 and the inner end of the board mounting / fixing section 3123 and is substantially perpendicular to the board 313. A support leg portion 3122 formed, a panel back surface portion 3121 formed continuously at an end of the support leg portion 3122 opposite to the substrate 313, and a part of the panel back surface portion 3121 are extended to display a liquid crystal display. A panel attachment portion 3124 to which a panel 311 is attached is provided.

Here, a display device in which a display panel is held and an elastic member is disposed between the mold and the display panel is known (see, for example, Patent Document 1).
In addition, in order to prevent the liquid crystal display panel from being displaced, a method of mounting and fixing using spring property is also disclosed. The panel holding spring of the parting plate is engaged with the spring engaging portion of the outer frame, and the outer frame A liquid crystal display device in which a liquid crystal display panel is fixed between a panel and a parting plate (see, for example, Patent Document 2), or a liquid crystal display panel stored in a panel storage unit using the elastic force of the panel fixing frame An electronic device (for example, see Patent Document 3) is known.
JP 2005-91971 A JP 2002-189210 A JP 2002-72909 A

  Incidentally, as shown in FIG. 6, when an impact is applied from a cover member side to a predetermined position of the liquid crystal display panel, for example, an edge portion, all loads are applied to the liquid crystal display panel supported by the panel support frame. There is a problem that the display panel is scratched or cracked.

  Patent Document 1 discloses a structure for buffering an impact applied to the display panel by an elastic member, but is different from a structure for supporting the display panel by a panel support frame. That is, according to the present invention, the liquid crystal display panel is supported by one member of the panel support frame and the shock applied to the panel is buffered.

  Accordingly, an object of the present invention is to provide a liquid crystal display panel support structure and a liquid crystal display device that can reduce the load applied to the liquid crystal display panel supported by the panel support frame and prevent the liquid crystal display panel from being damaged. That is.

In order to solve the above-mentioned problem, the invention described in claim 1
A liquid crystal display device in which a liquid crystal display panel is supported by a panel support frame attached to one surface of a substrate,
Of the one surface of the substrate, an electronic component is mounted on a portion facing the back side of the liquid crystal display panel,
The panel support frame is
A panel mounting portion to which the liquid crystal display panel is mounted;
A substrate mounting fixing portion fixed to one surface of the substrate;
An elastic deformation portion provided between the substrate mounting fixing portion and the panel mounting portion;
The board mounting / fixing portion and the elastic deformation portion are formed to bend toward the opposite side to the electronic component.

The invention described in claim 2
A liquid crystal display panel support structure for supporting a liquid crystal display panel by a panel support frame attached to one surface of a substrate,
The panel support frame is
A panel mounting portion to which the liquid crystal display panel is mounted;
A substrate mounting fixing portion fixed to one surface of the substrate;
An elastic deformation portion provided between the substrate mounting fixing portion and the panel mounting portion is provided.

According to a third aspect of the present invention, in the support structure for the liquid crystal display panel according to the second aspect,
Of the one surface of the substrate, an electronic component is mounted on a portion facing the back side of the liquid crystal display panel,
The board mounting / fixing portion and the elastic deformation portion are formed to bend toward the opposite side to the electronic component.

According to the first aspect of the present invention, the panel support frame that supports the liquid crystal display panel is provided with the elastic deformation portion between the substrate mounting fixing portion and the panel mounting portion that are mounted on the substrate. When an impact is applied to the display panel, the impact applied to the liquid crystal display panel can be buffered by the elastic deformation portion being elastically deformed according to the magnitude of the impact. In this way, the load applied to the liquid crystal display panel can be reduced, and damage to the liquid crystal display panel can be prevented appropriately.
Therefore, the liquid crystal display panel can be supported by one member of the panel support frame, and the shock applied to the liquid crystal display panel can be appropriately buffered.
In addition, since the substrate mounting fixing portion and the elastic deformation portion are formed to bend toward the opposite side of the electronic component mounted on the back side of the liquid crystal display panel of the substrate, on the back side of the liquid crystal display panel of the substrate The amount of electronic components to be mounted can be increased, and the mounting efficiency of electronic components can be improved.

According to the second aspect of the present invention, the panel support frame that supports the liquid crystal display panel is provided with the elastic deformation portion between the substrate mounting fixing portion and the panel mounting portion that are attached to the substrate. When an impact is applied to the display panel, the impact applied to the liquid crystal display panel can be buffered by the elastic deformation portion being elastically deformed according to the magnitude of the impact. In this way, the load applied to the liquid crystal display panel can be reduced, and damage to the liquid crystal display panel can be prevented appropriately.
Therefore, the liquid crystal display panel can be supported by one member of the panel support frame, and the shock applied to the liquid crystal display panel can be appropriately buffered.

  According to the third aspect of the present invention, it is obvious that the same effect as the second aspect of the invention can be obtained. In particular, the substrate mounting fixing portion and the elastic deformation portion are provided on the back surface of the liquid crystal display panel of the substrate. Since it is bent toward the opposite side to the electronic component mounted on the side, the amount of electronic components mounted on the back side of the liquid crystal display panel of the substrate can be increased, and the mounting efficiency of the electronic components Can be improved.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. However, the scope of the invention is not limited to the illustrated examples.
FIG. 1 is a plan view showing an electronic device 100 exemplified as a preferred embodiment to which the present invention is applied, and FIG. 2 is a schematic cross-sectional view of the electronic device 100 taken along line II-II in FIG. FIG. FIG. 3 is a plan view showing the panel support frame 12 provided in the electronic device 100.
In the following description, the vertical direction is the X-axis direction facing the liquid crystal display panel 11 of the electronic device 100, the horizontal direction orthogonal to the X-axis direction is the Y-axis direction, and the thickness direction of the electronic device 100 is The Z axis direction.

  For example, the electronic device 100 according to the present embodiment has the liquid crystal display device 1 mounted therein, and a mobile phone, a portable television, a PDA, or the like can be applied thereto. Specifically, for example, as shown in FIG. 1, the electronic device 100 is provided with a liquid crystal display device 1 at the front center thereof so as to expose the liquid crystal display panel 11 from the opening 2 a of the housing 2. On the lower side of the liquid crystal display device 1, an operation unit 3 including a cursor key and the like for performing a predetermined operation of the electronic device 100 is provided.

Hereinafter, the liquid crystal display device 1 will be described in detail.
The liquid crystal display device 1 includes, for example, a liquid crystal display panel 11, a metal panel support frame 12 that supports the liquid crystal display panel 11, a substrate 13 to which the panel support frame 12 is attached and fixed, and the like. 11 is covered with a resin casing 2.

  For example, various electronic components 131 for controlling the liquid crystal display panel 11 are mounted on the substrate 13. Specifically, various electronic components are disposed on a portion of the upper surface of the substrate 13 facing the back side of the liquid crystal display panel 11. 131 is mounted.

  Further, at a predetermined position of the substrate 13, for example, an attachment hole 132 into which a screw 123a related to a screw fixing of a substrate attachment fixing portion 123 (described later) of the panel support frame 12 is screwed is formed.

The liquid crystal display panel 11 includes, for example, an upper and lower light-transmitting substrates each having a pair of upper and lower transparent electrodes, an upper polarizing plate disposed on the viewing side of the upper light-transmitting substrate, A lower polarizing plate disposed on the back surface of the transmission substrate, an upper alignment film disposed on the back surface of the upper transparent electrode, and a lower alignment disposed on the viewing side surface of the lower transparent electrode A liquid crystal layer or the like sealed between the film and the upper and lower alignment films is provided.
The liquid crystal display panel 11 displays various information by applying a predetermined voltage between the upper and lower transparent electrodes, for example, under the control of the display driving circuit unit mounted on the substrate 13. ing.

  Further, at both ends of the liquid crystal display panel 11 on the Y-axis direction side, for example, a predetermined number (for example, two on each side) of protrusions 111 protruding outward from the end are provided. The protrusions 111 are engaged with engaged portions (described later) of the panel mounting portion 124 of the panel support frame 12, so that the liquid crystal display panel 11 is supported by the panel support frame 12.

Next, the panel support frame 12 will be described.
The panel support frame 12 is formed, for example, by bending a metal sheet material into a predetermined shape, and specifically, as shown in FIGS. 2 and 3, the panel support frame 12 is formed in a rectangular shape substantially equal to the liquid crystal display panel 11. The panel back surface 121 provided on the back side (back side) of the liquid crystal display panel 11, the support leg 122 provided continuously at each of the four corners of the panel back surface 121, and the panel of the support leg 122 A board mounting / fixing part 123 that is continuously provided at an end opposite to the back surface part 121 and is screwed to the board 13 and both right and left end parts of the panel back surface part 121 extending from a substantially central part in the X-axis direction. The panel attaching part 124 etc. which were taken out are provided.

Each of the panel mounting portions 124 is formed, for example, by being bent at a substantially right angle with respect to the panel back surface portion 121, and the engaged portions 124 a are arranged side by side in the X-axis direction so as to correspond to the protruding portions 111 of the liquid crystal display panel 11. One is provided.
In FIG. 3, the panel mounting portion 124 before being bent is illustrated.

The support leg portion 122 is formed by, for example, bending a sheet-like material so as to be substantially perpendicular to the panel back surface portion 121. Specifically, the support leg 122 is, for example, continuously provided on the back surface continuous portion 1221 continuously provided from the four corners of the panel back surface portion 121 to the outside in the Y-axis direction and the lower end portion of the back surface continuous portion 1221. The elastic deformation portion 1222 is formed, and the substrate mounting / fixing portion continuous portion 1223 connected to the lower end portion of the elastic deformation portion 1222 is provided.
The elastic deformation portion 1222 is formed, for example, by being bent in a substantially “<” shape toward the side opposite to the electronic component 131 mounted on the substrate 13, that is, the outside, and applied to the liquid crystal display panel 11 from above. It is designed to be elastically deformed according to the size.

The board mounting / fixing portion 123 is formed, for example, by being bent so as to be substantially perpendicular to the board mounting / fixing portion continuous portion 1223 toward the side opposite to the electronic component 131, that is, the outer side, similarly to the elastic deformation portion 1222. Has been.
The board mounting / fixing portion 123 has an insertion hole 123b for a screw 123a corresponding to the position of the mounting hole 132 of the board 13, for example.

  Note that, on the inner surface of the housing 2, for example, both end portions on the Y-axis direction side of the upper surface of the liquid crystal display panel 11 and both end portions on the Y-axis direction side of the liquid crystal display panel 11 so as to protect the liquid crystal display panel 11. Ribs 2b are formed so as to protrude toward the surface.

Next, a case where an impact is applied to the liquid crystal display panel 11 will be described with reference to FIGS.
Here, FIG. 4 is a diagram schematically showing a cross-section of the main part of the electronic device 100 taken along the line II-II in FIG. 1, and shows a state in which an impact is applied to the liquid crystal display panel 11 from above. Yes.

When an impact is applied to the end of the liquid crystal display panel 11 on the Y-axis direction side from the upper surface side, the elastic deformation portion 1222 (see FIG. 2) of the liquid crystal display panel 11 having a slightly bent shape in the normal state causes a large impact. According to this, it bends outward (see FIG. 4). That is, when the impact increases with respect to the return force of the elastic deformation portion 1222 to the normal state, the elastic deformation portion 1222 is gradually deformed according to the magnitude of the impact.
Here, since the bending (deformation) of the elastic deformation portion 1222 is elastic deformation, when the return force to the normal state of the elastic deformation portion 1222 is larger than the applied impact, the elastic deformation portion 1222 is elastically deformed to return to the normal state. The degree of bending of the portion 1222 is reduced.

As described above, according to the electronic apparatus 100 of the present embodiment, the panel mounting frame 123 that is attached to the substrate 13 and the panel attachment to which the liquid crystal display panel 11 is attached to the panel support frame 12 that supports the liquid crystal display panel 11. Since an elastic deformation portion 1222 that is bent outward in the Y-axis direction is provided between the portion 124 and the liquid crystal display panel 11 when an impact is applied to the liquid crystal display panel 11 from the housing 2 side, the elastic deformation is performed according to the magnitude of the impact. Since the portion 1222 is elastically deformed, an impact applied to the liquid crystal display panel 11 can be buffered. In this manner, the load applied to the liquid crystal display panel 11 can be reduced, and damage such as damage or cracking of the liquid crystal display panel 11 can be appropriately prevented.
Accordingly, the liquid crystal display panel 11 can be supported by one member of the panel support frame 12 and the shock applied to the liquid crystal display panel 11 can be appropriately buffered.

  The board mounting / fixing part 123 and the elastic deformation part 1222 are formed to bend toward the side opposite to the electronic component 131 mounted on the lower side of the panel back surface part 121 of the board 13, that is, outward in the Y-axis direction. Therefore, the amount of the electronic component 131 mounted on the back side of the liquid crystal display panel 11 of the substrate 13 can be increased, and the mounting efficiency of the electronic component 131 can be improved.

  Note that the present invention is not limited to the above-described embodiment, and various improvements and design changes may be made without departing from the spirit of the present invention.

<Modification 1>
Below, the electronic device of the modification 1 is demonstrated with reference to FIG.
Here, FIG. 5A and FIG. 5B are diagrams schematically illustrating a cross-section of the main part of the electronic device of the first modification.
For example, as shown in FIGS. 5A and 5B, the liquid crystal display device 201 provided in the electronic device of Modification 1 is an electronic device in which the elastic deformation portion 2222 of the liquid crystal display panel 11 is mounted on the substrate 13. It is formed by bending in a substantially “<” shape toward the component 131 side, that is, inward. Then, the liquid crystal display panel 11 is greatly bent inward according to the magnitude of impact applied from above (see FIG. 5B).
Therefore, according to the electronic device of the first modification, the amount of the electronic component 131 mounted on the back side of the liquid crystal display panel 11 of the substrate 13 is slightly reduced, but elastically deformed outward in the Y-axis direction of the liquid crystal display panel 11. It is not necessary to secure a space for the portion 2222 to be bent, and the size of the liquid crystal display device 1 in the Y-axis direction can be reduced.

  Moreover, in the said embodiment, although what extended to the Y-axis direction (left-right direction) outer side from the panel back surface part 121 was illustrated as the support leg part 122, it is not restricted to this, The X-axis direction outer side, That is, it may extend in the vertical direction.

  Furthermore, the configuration of the liquid crystal display panel 11, the shape of each part, and the like illustrated in the above embodiment are merely examples, and are not limited thereto.

It is a top view which shows the electronic device illustrated as suitable one Embodiment to which this invention is applied. It is a figure which shows typically the principal part cross section of the electronic device in the II-II line | wire of FIG. It is a top view which shows the panel support frame with which the electronic device of FIG. 1 is equipped. It is a figure which shows typically the principal part cross section of the electronic device in the II-II line | wire of FIG. It is a figure which shows typically the principal part cross section of the electronic device of the modification 1. FIG. It is a figure which shows typically the principal part cross section of the conventional electronic device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Electronic device 1,201 Liquid crystal display device 11 Liquid crystal display panel 12 Panel support frame 1222,2222 Elastic deformation part 123 Board | substrate attachment fixing part 124 Panel attachment part 13 Board | substrate 131 Electronic component

Claims (3)

A liquid crystal display device in which a liquid crystal display panel is supported by a panel support frame attached to one surface of a substrate,
Of the one surface of the substrate, an electronic component is mounted on a portion facing the back side of the liquid crystal display panel,
The panel support frame is
A panel mounting portion to which the liquid crystal display panel is mounted;
A substrate mounting fixing portion fixed to one surface of the substrate;
An elastic deformation portion provided between the substrate mounting fixing portion and the panel mounting portion;
The liquid crystal display device, wherein the substrate mounting and fixing portion and the elastic deformation portion are bent toward the opposite side of the electronic component. A liquid crystal display panel support structure for supporting a liquid crystal display panel by a panel support frame attached to one surface of a substrate,
The panel support frame is
A panel mounting portion to which the liquid crystal display panel is mounted;
A substrate mounting fixing portion fixed to one surface of the substrate;
A support structure for a liquid crystal display panel, comprising: an elastic deformation portion provided between the substrate mounting fixing portion and the panel mounting portion. Of the one surface of the substrate, an electronic component is mounted on a portion facing the back side of the liquid crystal display panel,
3. The support structure for a liquid crystal display panel according to claim 2, wherein the substrate mounting / fixing portion and the elastically deforming portion are bent toward the opposite side of the electronic component.

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