KR20070052082A - Display module and terminal having same - Google Patents

Abstract

A display module and a terminal having the same are disclosed. The display module of the present invention, the panel (Panel) is formed image; A backlight unit disposed on one side of the panel to project predetermined light onto the panel; And a closed loop buffer frame that supports the panel and the backlight unit but is molded of a flexible material having a range of 20 to 80 HB (Brinell hardness) to cushion the impact applied to the panel; And a mold frame having a frame support for preventing the frame from being deformed arbitrarily. According to the present invention, it is possible to prevent the panel from being broken or damaged due to the impact applied to the display module by at least changing the material properties of the mold frame so that the mold frame has a shock resistance that can be buffered against the impact.

Display, module, terminal, backlight unit, mold frame, frame reinforcement part, rubber

Description

Display module and terminal equipped with the same {Display module and portable phone having the same}

1 is an image of a state in which the terminal is instantaneously deformed by an impact when the terminal falls.

FIG. 2 is an image of a shape in which the upper right portion of the panel is broken due to the impact of FIG. 1.

3 is a perspective view of a terminal provided with a display module according to the present invention.

4 is a perspective view of the display module of FIG. 3.

5 is an exploded perspective view of FIG. 4.

6 is an exploded perspective view of the buffer frame and the frame support in the mold frame of FIG.

7 is a perspective view of the coupled state of FIG.

8A and 8B are enlarged perspective views of main parts of FIG. 4, respectively.

* Explanation of symbols for main parts of the drawings

10 terminal 11: main body

15: folder 18: battery

20: display module 30: panel

40: backlight unit 41: light guide plate

50: mold frame 51: buffer frame

52: body 53: cutout

54: stopper 55: frame support

56: bottom plate portion 57: side plate portion

The present invention relates to a display module and a terminal having the same, and more particularly, to the display module by making the mold frame have a shock resistance that can be buffered against impact by changing material properties of the mold frame at least. The present invention relates to a display module and a terminal having the same, which can prevent the panel from being broken or damaged due to an impact.

The terminal refers to a mobile phone including a PCS phone, a PDA and the like. For modern people, terminals are becoming a necessity rather than a luxury. Accordingly, in case of terminal manufacturers, new products are built or the exterior designs are made colorful and products are released from time to time, and consumers are also replacing terminals at regular intervals.

As will be described in detail below, the terminal is divided into an input portion for inputting information and a display portion for outputting the input information or displaying external information. The display portion refers to a display module, also called liquid crystal.

The display module is largely comprised of a panel on which an image is formed, a backlight unit coupled to the rear of the panel to project light onto the panel, and a mold frame in which they are received and coupled.

As a panel, LCD (Liquid Crystal Display) is mainly adopted. LCD is a liquid crystal (Liquid Crystal) between the two glass substrates. Although LCD has the disadvantage of slow response speed and relatively high cost, LCD has advantages over plasma display panel (PDP) in terms of resolution because it is produced by semiconductor process. Therefore, it is recently attracting attention as a next generation display device such as a mobile phone, a computer monitor, and a television.

Since the panel applied to the LCD itself is adopted in such a way that it does not emit light but adjusts the light transmittance, it is necessary to project light onto the panel in order to form a predetermined image on the panel. This function is handled by the back light unit. The backlight unit directly directs the front surface of the panel by arranging the light source on one side of the panel, and arranges a line light source or a point light source on one side or a plurality of side surfaces of the panel to reflect and diffuse light beams on the light guide plate and the reflective sheet. It is divided into the edge (edge) method. At present, devices such as terminals called mobile phones mainly adopt the latter edge method.

Such a backlight unit is accommodated in a mold frame forming an outer frame together with a panel to implement one display module. At this time, the mold frame is mainly manufactured by injection molding a material called polycarbonate (PC, Polycarbonate). When the mold frame is manufactured by injection molding with polycarbonate, not only mass production is good, but also the same replication is good, and there is an advantage in that the production cost is low due to easy purchase of raw materials. Therefore, until now, most manufacturers have manufactured mold frames by injection molding with polycarbonate.

However, when manufacturing the mold frame by injection molding with polycarbonate, although there are some advantages described above, there is a problem that the impact resistance is not good due to the material properties of polycarbonate.

Therefore, as in the prior art, a mold frame is made by injection molding using polycarbonate, and a panel and a backlight unit are coupled to the mold frame to implement one display module, and then applied to a terminal, which is a mobile phone, by mistake. When the terminal is dropped or an unwanted shock is applied to the terminal, the panel is easily damaged such as the panel is broken because the applied shock is transmitted to the panel as it is. For reference, FIG. 1 is an image of a state in which a terminal is temporarily deformed due to an impact when the terminal falls, and FIG. 2 is an image of a shape in which the upper right part of the panel is broken due to the impact of FIG. Drawing.

SUMMARY OF THE INVENTION An object of the present invention is to solve a problem in the related art, in order to prevent the panel from being impacted by the display module by at least changing the material properties of the mold frame so that the mold frame has an impact resistance that can be buffered against impact. It is to provide a display module and a terminal having the same that can be prevented from being broken or damaged.

The object is, according to the present invention, a panel in which an image is formed; A backlight unit disposed on one side of the panel to project predetermined light onto the panel; And a closed loop buffer frame that supports the panel and the backlight unit and is molded of a flexible material having a range of 20 to 80 HB (Brinell hardness) to cushion the impact applied to the panel, and the outside of the buffer frame. It is achieved by a display module characterized in that it comprises a mold frame having a frame support for wrapping and supporting the buffer frame to deform arbitrarily deformed.

Here, the buffer frame is preferably made of any one soft material selected from rubber and silicon.

The buffer frame, the rectangular body portion; A cutout portion formed on at least one side of the body portion to allow access of the LED mounting FPCB; And at least one stopper protruding from an inner side of the body portion toward a central region of the body portion to prevent the panel from being separated from the buffer frame.

The stoppers are formed in pairs to be spaced apart from each other at the long sides of the body portion.

The stopper is formed integrally with the body portion.

The frame support may include a bottom plate disposed parallel to the panel; And a side plate portion bent along the thickness direction of the panel at the outer end of the bottom plate portion to be in contact with the outer surface of the buffer frame.

At least one through slot is formed in the side plate portion of the frame support portion.

The frame support is advantageously made of steel.

The panel may be a liquid crystal display (LCD).

On the other hand, the said object is achieved also by the terminal provided with the display module of any one of Claims 1-10.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

3 is a perspective view of a terminal provided with a display module according to the present invention. As shown in the figure, the terminal 10 has a main body 11, a folder 15 for opening and closing the front of the main body 11, between the main body 11 and the folder 15; The hinge 17 has a hinge 17 for rotating the folder portion 15 with respect to the main body portion 11, and a battery 18 detachably coupled to the rear surface of the main body portion 11. The terminal 10 shown in FIG. 3 is a so-called clamshell mobile phone.

A plurality of key buttons 12 are provided on the inner surface of the main body 11. The lower part of the key buttons 12 is provided with a microphone 13 for transmitting voice, and the upper part is provided with function buttons 14. The function buttons 14 are used to search various menus or select a function stored in the terminal 10, unlike the key buttons 12 for inputting a phone number or a letter.

Above the inner surface of the folder section 15, a receiver 16 for receiving voices from the counterpart is formed. In addition, a display module 20 including a phone number, a state of charge of the battery 18, a vibration state, an alarm state display, and the like is formed below the receiver 16. Here, the display module 20 may be the folder part 15 itself or may be a part of the folder part 15.

Figure 4 is a perspective view of the display module of Figure 3, Figure 5 is an exploded perspective view of Figure 4, Figure 6 is an exploded perspective view between the buffer frame and the frame support in the mold frame of Figure 5, Figure 7 is a combined state of Figure 6 Perspective view.

4 and 5, the display module 20 according to the present invention is disposed on an opposite side of the front cover 60 with the panel 30 on which an image is formed and the panel 30 interposed therebetween. Back light unit 40 for projecting predetermined light to the panel 30, a mold frame 50 for supporting the panel 30 and the backlight unit 40, and the panel 30. The front cover 60 is coupled to the mold frame 50 in the front of the.

As described above, a plasma display panel (PDP), a liquid crystal display (LCD), an organic light emitting diode (OLED), a field emission display (FED), and the like may be applied to the panel 30. (30) shall be applied.

The backlight unit 40 includes a light guide plate 41, a reflection sheet 42 disposed below the light guide plate 41, a diffusion sheet 43 disposed above the light guide plate 41, and a panel 30. A light shielding tape 44 bonded between the diffusion sheets 43 and a FPCB (Flexbile Printed Circuit Board) including a driving large scale integration (LSI) is provided.

In the figure, the light guide plate 41 is shown as a substantially rectangular plate-like body. However, the light guide plate 41 may be formed to be inclined so that the upper surface toward the diffusion sheet 43 is flat and the lower surface thereof becomes narrower from one end to the other end.

Reflective sheet 42 is disposed almost the same as the area of the light guide plate 41 to prevent light from leaking to the lower portion of the light guide plate 41 as well as to reflect the leaked light back to the panel 30 side. do. The reflective sheet 42 forms a mirror-like mirror.

The diffusion sheet 43 serves to diffuse light generated from the light guide plate 41. Although no pattern is shown on the surface of the diffusion sheet 43 in the drawings of the present embodiment, a fine dot pattern may be continuously formed on the surface of the diffusion sheet 43 as a means for diffusing more light. have. In addition, although light is uniform due to light diffusion, two prism sheets (not shown) in which a prism pattern exerting a light focusing effect may be additionally used to prevent a decrease in brightness caused by side effects.

The light shielding tape 44 serves to shield light from leaking to portions outside the screen display area of the panel 30. On the other hand, the display module 20 is further provided with a lamp as a means for generating light to the light guide plate 41, the so-called LED (Light Emitting Diode, LED) is applied to the lamp. This LED is mounted to the LED mounting FPCB 46.

Accordingly, after the LED emits light and the light of the LED is incident on the light guide plate 41, the light progresses along the plate surface of the light guide plate 41. ), And the rest toward the reflective sheet 42 positioned below the light guide plate 41. The light directed to the reflective sheet 42 is reflected by the reflective sheet 42 and then moved back to the diffusion sheet 43 through the light guide plate 41. Light diffused through the diffusion sheet 43 is uniformly diffused while passing through the diffusion sheet 43 and then incident to the panel 30. Accordingly, the user can see the image formed on the panel 30.

The backlight unit 40 is coupled with the panel 30 while being accommodated in the mold frame 50. As a result, the mold frame 50 serves as a case for supporting the panel 30 and the backlight unit 40. The mold frame 50 is composed of a buffer frame 51 and the frame support portion 55, as shown in Figure 6 and 7.

The shock absorbing frame 51 serves to cushion the shock applied to the panel 30 (for example, the image of FIG. 1) by dropping the terminal 10. Therefore, the buffer frame 51 is preferably formed of a flexible material that can be buffered against the impact. In the case of the present embodiment, the buffer frame 51 is manufactured using a soft material having a range of 20 to 80 HB (Brinell hardness). Such flexible materials include rubber, silicone, and the like, and any may be applied.

The buffer frame 51 has a rectangular body portion 52, a cutout portion 53 formed on at least one side of the body portion 52 to allow the above-described LED mounting FPCB 46 to enter and exit, and the body portion It has a plurality of stoppers 54 (see FIGS. 8A and 8B) protruding from the inner side of the body 52 toward the central region of the body portion 52 to prevent the panel 30 from being separated from the buffer frame 51. .

In the present embodiment, since the panel 30 has a rectangular shape, the body portion 52 of the buffer frame 51 also has a rectangular shape corresponding thereto. However, if the panel 30 is not rectangular in shape, the shape of the body portion 52 may also be changed accordingly. The body portion 52 is provided with a stepped portion 52a on which the panel 30 or the backlight unit 40 is supported, and a support rib 52b for supporting other structures.

8A and 8B, the stopper 54 serves to prevent the coupled panel 30 from being detached from the body portion 52 by an arbitrary or external impact as if fitted in the body portion 52. . Accordingly, the stopper 54 may be formed at any position of the body portion 52. In the present embodiment, the stoppers 54 are formed in pairs so as to be spaced apart from each other on the long sides of the body portion 52. Although the stopper 54 may be manufactured separately and coupled to the body portion 52, it is preferable that the stopper 54 is integrally formed in the body portion 52 together with the cutout 53 in consideration of efficiency in mass production.

On the other hand, since the buffer frame 51 is made of a soft material, the shape may be changed in the process of assembling with other components by applying to the display module 20 after molding. That is, since the buffer frame 51 is a relatively soft material, it is easy to bend or warp by heat or external force.

When the shock absorbing frame 51 is deformed as described above, the panel 30 and the backlight unit 40 are inevitably coupled with each other, and even if forcedly assembled, a large number of assembly tolerances occur, thereby degrading reliability as a product. Therefore, while the shock absorbing frame 51 is manufactured with a soft material to cushion the impact applied to the panel 30, it is necessary to prepare a countermeasure so that the shape or appearance of the manufactured shock absorbing frame 51 is not arbitrarily deformed. This is the frame support part 55.

The frame support part 55 surrounds and supports the outer periphery of the shock absorbing frame 51 to prevent the shock absorbing frame 51 from being arbitrarily deformed. Therefore, the frame support portion 55 is preferably made of a relatively strong material, for example, steel (Steel) than the buffer frame (51).

The frame support part 55 is bent along the thickness direction of the panel 30 at the outer end portion of the bottom plate portion 56 and the bottom plate portion 56 arranged in parallel with the panel 30 of the buffer frame 51. It consists of a side plate portion 57 which is in contact with the outer surface. The side plate portion 57 is further formed with a cutout portion 57a formed at the same position as the cutout portion 53 formed in the buffer frame 51 to allow the LED mounting FPCB 46 to enter and exit.

In addition, a plurality of through slots 57b for fixing the front cover 60 and the frame support part 55 are formed in the side plate part 57 of the frame support part 55. And although optional, an opening 57c is formed in each corner region of the side plate portion 57 for easy assembly. Of course, if necessary, the corners 57 of the side plate portion 57 may be blocked to form the opening 57c.

By such a configuration, a description will be given of the assembly process and the action according to the display module 20 of the present invention.

First, a predetermined mold (not shown) is prepared, and the buffer frame 51 is manufactured by injecting rubber or silicone liquid, which is a material of the buffer frame 51, into a mold and compressing it at a high temperature. The manufactured buffer frame 51 is already formed with a body portion 52, a cutout portion 53, and a stopper 54. Next, a frame supporting portion 55 having the bottom plate portion 56 and the side plate portion 57 is manufactured by applying a method such as injection molding, extrusion molding, or press working.

Then, the buffer frame 51 is first inserted into the frame support 55 to assemble them. At this time, although a coupling means such as a screw or an adhesive may be used, it is easy if the buffer frame 51 is press-fitted (inhibited fitting) to the frame support part 55.

When the assembly of the frame support unit 55 and the buffer frame 51 is completed, the backlight unit 40 is accommodated in the buffer frame 51. Then, the light shielding tape 44 is adhered to the upper portion of the backlight unit 40, and then the panel 30 is disposed on the upper surface of the backlight unit 40 to be bonded. When the panel 30 and the backlight unit 40 are completely combined, the front cover 60 is finally covered to complete the display module 20.

After the display module 20 completed in this manner is completed, it is applied to the terminal 10 while the terminal 10 is inadvertently dropped, or the terminal 10 is undesired. When an impact is applied, the applied shock is first buffered by a buffer frame 51 made of a soft material to cancel the shock. That is, since the shocks exceeding a certain limit can be absorbed by the shock absorbing frame 51, the shocks are transmitted to the panel 30 to prevent the panel 30 from being broken or damaged.

As such, according to the present invention, the mold frame 50 has a shock resistance that can be buffered against the impact by changing the material properties of the mold frame 50 at least by the impact applied to the display module 20 This can prevent the panel 30 from being broken or damaged.

In the above-described embodiment, the display module is applied only to the inside of the folder portion, but the display module may be applied to the outside of the folder portion. In this case, one more display module may be used, or the auxiliary panel may be disposed on the opposite side after opening the bottom plate of the frame support. In such a case, it is preferable to use a light guide plate capable of emitting light in both directions, and instead of the reflective sheet, the diffusion sheet may be disposed.

In the above-described embodiment, the terminal is limited to a telephone such as a PCS phone and a PDA, but the digital camera to which the display module can be applied can also expand its area.

As described above, the present invention is not limited to the described embodiments, and various modifications and changes can be made without departing from the spirit and scope of the present invention, which will be apparent to those skilled in the art. Therefore, such modifications or variations will have to be belong to the claims of the present invention.

As described above, according to the present invention, the panel is not broken or damaged due to the impact applied to the display module by at least changing the material properties of the mold frame so that the mold frame has a shock resistance that can be buffered against the impact. You can stop it.

Claims (10)

A panel on which an image is formed; A backlight unit disposed on one side of the panel to project predetermined light onto the panel; And A closed loop shaped buffer frame which supports the panel and the backlight unit but is formed of a flexible material having a range of 20 to 80 HB (Brinell hardness) to cushion the impact applied to the panel, and surrounds the outer edge of the buffer frame. And a mold frame having a frame support for supporting the buffer frame to prevent deformation of the buffer frame. The method of claim 1, The buffer frame is a display module, characterized in that manufactured by any one soft material selected from rubber and silicon. The method of claim 2, The buffer frame, Rectangular body portion; A cutout portion formed on at least one side of the body portion to allow access of the LED mounting FPCB; And And at least one stopper protruding from an inner side of the body portion toward a central area of the body portion to prevent the panel from being separated from the buffer frame. The method of claim 3, The stopper is a display module, characterized in that formed in pairs spaced apart from each other on the long side of the body portion. The method of claim 4, wherein The stopper is a display module, characterized in that formed integrally with the body portion. The method of claim 1, The frame support portion, A bottom plate disposed in parallel with the panel; And And a side plate portion bent along the thickness direction of the panel at the outer end of the bottom plate portion to be in contact with the outer surface of the buffer frame. The method of claim 6, At least one through slot is formed in the side plate portion of the frame support. The method of claim 7, wherein Display unit, characterized in that the frame support is manufactured by steel (Steel). The method of claim 1, The panel is a display module, characterized in that the LCD (Liquid Crystal Display). A terminal having a display module according to any one of claims 1 to 9.

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