JP5411071B2 - Display device - Google Patents

Description

  The present invention relates to a display device, and more particularly to a display device having a structure in which a display panel is supported by an upper frame and a lower frame.

  Various display devices such as liquid crystal modules (liquid crystal display devices) and organic electroluminescence display devices are used as display devices for many portable information devices such as mobile phones, personal digital assistants (PDAs), digital cameras, and multimedia players. ing.

  In order to ensure module strength, these thin display devices include, for example, a liquid crystal display panel (LCD), a liquid crystal display panel, and a backlight module that illuminates the liquid crystal display panel. A structure that is sandwiched between both sides by a metal frame or the like is widely used.

  FIG. 1 is an example of a display device module, and illustrates a structure in which a liquid crystal display panel or an organic electroluminescence display panel 1 is sandwiched between an upper frame 2 and a lower frame (not shown). FIG. 1A is a plan view of the upper surface side of the display device module, and FIG. 1B is a side view. Reference numeral 3 denotes a flexible printed circuit (FPC) in which wiring for supplying an electric signal or the like for driving the display panel 1 is formed.

  As disclosed in Patent Document 1, the upper and lower frames are fixed by providing a fitting claw (see the dotted line in FIG. 1B) on the upper or lower frame side surface, The nail is hooked and fixed in the hole on the side of the frame. A cross-sectional view taken along one-dot chain line A-A ′ in FIG. In FIG. 2, the upper frame 2 and the lower frame 5 are fitted, and in the fitted state, the claw 50 that is a protrusion provided on the lower frame is engaged with the hole 20 that is the engaging portion of the upper frame. Match. Between the upper frame 2 and the lower frame 5, for example, a liquid crystal display panel 1 and a backlight 6 that illuminates the liquid crystal display panel 1 are supported.

  1 and 2, the load on the display surface of the display panel can be supported by the upper and lower frames 2 and 5 in addition to the liquid crystal display panel 1 and the backlight module 6, and the entire liquid crystal module As a mechanical strength. However, when a load is applied to the display surface as indicated by the arrow B in FIG. 2, the upper and lower frames are moved as shown in FIG. 3 due to the amount of displacement of the upper frame itself and the expansion of the side surface portion of the frame (arrow C). The upper frame 2 is moved as shown by the arrow D and the support of the upper frame 2 is lost, causing a problem that the strength is lowered. In particular, the upper frame 2 has a portion corresponding to the display screen area of the display panel 1 and is composed of a frame-shaped member that surrounds the display screen area. The fitting state of the upper and lower frames is easy to come off.

Japanese Patent Laid-Open No. 10-39280

  The problem to be solved by the present invention is to solve the above-mentioned problems, and to make the fitting state of the upper and lower frames not easily disengaged from an external load, thereby improving the mechanical strength of the entire display module. A display device is provided.

In order to solve the above-described problems, the following means can be used.
(1) In a display device having a display panel, an upper frame that supports the display panel from the front surface side of the display panel, and a lower frame that supports the display panel from the back surface side of the display panel, A projection is formed on one of the lower frames, and an engagement is formed on the other frame to engage with the projection. The upper frame and the lower frame sandwich the display panel. When the fitting is performed, the protrusion and the engaging portion are configured to engage with each other, and the upper portion and the lower frame are disposed in the vicinity of the engaging portion in a direction in which the upper frame and the lower frame are disengaged. At least one engagement assisting portion that engages with the protrusion and prevents the upper frame and the lower frame from being completely disengaged when moved in a moving manner. To do.

(2) In the display device according to (1), the upper frame is a frame-shaped member that surrounds a display screen area of the display panel.

(3) In the display device according to (1) or (2), the protrusion is a claw-like member obtained by bending a part of the one frame, and the engagement portion and the engagement auxiliary portion are And an opening formed in a part of the other frame.

(4) In the display device according to any one of (1) to (3), the display panel is either a liquid crystal display panel or an organic electroluminescence display panel.

(5) In the display device according to (4), the display panel is a liquid crystal display panel, and the liquid crystal display panel and a backlight are sandwiched between the upper frame and the lower frame. It is characterized by.

  As in the present invention, one of the upper frame and the lower frame is formed with a protrusion, and the other frame is formed with an engagement portion that engages with the protrusion, and in the vicinity of the engagement portion. At least one that prevents the upper frame and the lower frame from being completely disengaged by engaging with the protrusion when the upper frame and the lower frame move relative to each other. Since the two or more engagement assisting portions are formed, it is possible to maintain the fitted state of the upper and lower frames and to prevent the mechanical strength of the entire display module from being lowered.

It is the top view (a) and side view (b) which show the outline of the whole display apparatus. FIG. 2 is a cross-sectional view taken along one-dot chain line A-A ′ in the display device of FIG. 1. It is a figure explaining the state which the upper and lower frames of the display apparatus shown in FIG. 2 removed. It is sectional drawing which shows an example of the display apparatus of this invention. FIG. 5 is a diagram illustrating that the upper and lower frames of the display device of FIG. 4 can be prevented from being completely removed. It is sectional drawing which shows the other example of the display apparatus of this invention.

The display device of the present invention will be described in detail below.
As shown in FIG. 4, the display device of the present invention supports the display panel 1, the upper frame 2 that supports the display panel from the front surface side of the display panel, and the display panel from the back surface side of the display panel. In the display device having the lower frame 5, one of the upper frame and the lower frame is formed with a protrusion 50, and the other frame is formed with an engagement portion 21 that engages with the protrusion. When the upper frame and the lower frame are fitted in a state of sandwiching the display panel, the protrusion 50 and the engagement portion 21 are engaged with each other, and the engagement portion In the vicinity of the upper frame and the lower frame, when they move relative to each other in the direction of disengagement, the protrusions are engaged with each other to prevent the upper frame and the lower frame from being completely disengaged. At least one engagement assisting portion 22 is formed. And said that you are.

  The display device of the present invention is characterized in that an engagement assisting portion 22 is provided in the vicinity of the engagement portion 21 as shown in FIG. Thereby, even if a load is applied to the upper frame 2 from the outside and the protrusion 50 is detached from the engagement portion 21, the engagement assisting portion 22 and the protrusion 50 are engaged as shown in FIG. For this reason, it is possible to prevent the upper and lower frames from being completely disengaged, and to suppress a decrease in the mechanical strength of the entire display module. In addition, when a load is applied to the upper and lower frames again with the engagement assisting portion 22 and the projection 50 engaged, the projection 50 moves to the engagement portion 21 due to the upper and lower frames approaching each other. It is also possible to restore the original fitting state.

  The engagement assisting portion 22 is formed in the vicinity of the engaging portion 21, particularly on a path along which the protrusion 50 moves when the upper and lower frames move in a direction in which the upper and lower frames are disengaged (direction of arrow D in FIG. 5) Is done. Further, the number of engagement assisting portions 22 is not limited to one, and a plurality of engagement assisting portions 22 may be arranged.

  As the protrusion applied to the display device of the present invention, when the upper and lower frames are made of a metal material, a claw-like member obtained by cutting a part of the frame, a convex member formed by press molding, or the like is used. Is possible. Moreover, as an engaging part, the opening by punching as shown in FIG. 4, the concave member formed by press molding, etc. can be utilized. When the upper frame or the lower frame is molded from resin, it can be molded by molding or injection molding. In this embodiment, the case where the upper frame and the lower frame are formed of a metal material is described. However, the upper and lower frames may be formed of a resin frame. Further, a metal frame may be used for the upper frame, and the lower frame may be constituted by a resin frame containing a backlight.

  As the shape of the upper frame 2, the present invention can be preferably applied particularly to a frame-shaped member that surrounds the display screen area of the display panel 1. That is, as described with reference to FIG. 3, when a load is applied to the frame-shaped portion of the upper frame, the side surface portion of the upper frame easily spreads outward, and the engagement relationship between the protrusion and the engagement portion is released. The Rukoto. In order to compensate for the drawbacks of the upper frame, it is particularly effective to provide the engagement assisting portion of the present invention.

  In FIG. 4, the protrusion 50 is formed on the lower frame 5 and the engaging portion 21 is formed on the upper frame 2, but the display device of the present invention is not limited to this, as shown in FIG. It is also possible to form the protrusion 23 on the frame 2 and the engaging portion 51 on the lower frame 5. Similarly, by providing the engagement assisting portion 52, it is possible to prevent the fitting state of the upper and lower frames from being completely removed.

  As the display panel used in the display device of the present invention, any thin display panel such as a liquid crystal display panel or an organic electroluminescence display panel can be suitably used. In particular, when the display panel is a liquid crystal display panel, it is possible to sandwich only the liquid crystal display panel between the upper and lower frames. However, as shown in FIG. 4 or FIG. The liquid crystal display panel 1 and the backlight 7 can be sandwiched between them.

  As described above, according to the present invention, it is possible to provide a display device in which the fitting state of the upper and lower frames is configured so as not to be easily removed even from an external load, and the mechanical strength of the entire display module is improved. It becomes possible to do.

DESCRIPTION OF SYMBOLS 1 Display panel 2 Upper frame 3 Flexible printed circuit 5 Lower frame 50 Protrusion part 21 Engagement part 22 Engagement auxiliary part

Claims (5)

In a display device comprising: a display panel; an upper frame that supports the display panel from the front surface side of the display panel; and a lower frame that supports the display panel from the rear surface side of the display panel.
One of the upper frame and the lower frame is formed with a protrusion, and the other frame is formed with an engagement portion that engages with the protrusion, and the upper frame and the lower frame are When fitted in a state of sandwiching the display panel, the protrusion and the engaging portion are configured to engage with each other,
In the vicinity of the engaging portion, when the upper frame and the lower frame move relative to each other in the disengaging direction, the engaging portion engages with the protruding portion, and the upper frame and the lower frame are completely detached. A display device characterized in that at least one engagement assisting part is formed to prevent the above-described problem.   The display device according to claim 1, wherein the upper frame is a frame-shaped member surrounding a display screen area of the display panel.   3. The display device according to claim 1, wherein the protrusion is a claw-like member obtained by bending a part of the one frame, and the engagement portion and the engagement assisting portion are provided on the other frame. A display device comprising an opening formed in a part.   4. The display device according to claim 1, wherein the display panel is either a liquid crystal display panel or an organic electroluminescence display panel.   5. The display device according to claim 4, wherein the display panel is a liquid crystal display panel, and the liquid crystal display panel and a backlight are sandwiched between the upper frame and the lower frame. Display device.

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