TWI468780B - Lcd module with an easily assembled structure - Google Patents

Description

LCD module with simple assembly structure

The invention relates to a liquid crystal display module, in particular to a liquid crystal display module with a simple assembly structure.

Referring to FIG. 1 , a liquid crystal display module includes a backlight unit 11 , a liquid crystal panel 12 stacked above the backlight unit 11 , a plastic frame unit 13 accommodating the backlight unit 11 and the liquid crystal panel 12 , a fixing frame 14 having a four-frame shape and surrounding the plastic frame unit 13 and a bottom plate 15 mounted on the bottom of the plastic frame unit 13. The plastic frame unit 13 has an outer ring portion 131 and an outer ring portion. a partitioning portion 132 extending inwardly at an inner center of the inner portion of the 131, a top side of the outer ring portion 131 and the partition portion 132 surrounding the top chamber 133 defined to receive the liquid crystal panel 12, and an outer ring portion The bottom side of the 131, the partition 132 and the bottom plate 15 surround a bottom chamber 134 defined to receive the backlight unit 11, the fixing frame 14 having a side ring portion 141 completely surrounding the outer ring portion 131, and a self The top side of the side ring portion 141 extends inwardly to completely surround the top ring portion 142 at the periphery of the top surface of the liquid crystal panel 12.

However, since the volume of the fixing frame 14 surrounding the plastic frame unit 13 is relatively large, when the fixing frame 14 is stamped into a four-frame shape by a single metal plate, a large-area iron plate is required as a raw material, which causes high material cost. Or, the use of a plurality of long plates welded into a four-frame shape saves the material cost, but increases the processing cost of the welding, so that the fixed frame 14 accounts for the production cost of the entire liquid crystal display module cannot be reduced.

Accordingly, it is an object of the present invention to provide a liquid crystal display module having a simple assembled structure.

Therefore, the liquid crystal display module of the invention has a simple assembly structure, and comprises a backlight unit, a liquid crystal panel, and a plastic frame unit.

The liquid crystal panel is superposed on the backlight unit and has a long axis direction. The plastic frame unit includes a frame body and a partition extending inwardly from the frame body to the backlight unit and the liquid crystal panel. And an outer ring portion extending upward from a periphery of the frame body, at least one limiting portion extending inwardly from the outer ring portion, and at least one of the limiting portion, the outer ring portion and the partition portion are jointly defined for A liquid crystal panel slot in which one side of the liquid crystal panel is inserted.

The effect of the invention is that the liquid crystal panel can be effectively fixed by the arrangement of the plastic frame unit, so that the manufacturing cost of the mating assembly can be greatly reduced.

The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments of the invention.

Before the present invention is described in detail, it is noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to FIGS. 2, 3, and 4, a first preferred embodiment of a liquid crystal display module having a simple assembled structure includes a backlight unit 2, a liquid crystal panel 3, a plastic frame unit 4, a fixed frame 5, and a Fixed unit 6.

The backlight unit 2 includes a light guide plate 21, a light source member 22 adjacent to the light guide plate 21, a reflective sheet 23 superimposed on the bottom of the light guide plate 21, and a superimposed between the light guide plate 21 and the liquid crystal panel 3. The optical film set 24 and a lamp cover 25 detachably disposed on the plastic frame unit 4.

The light guide plate 21 has a first side surface 211 inserted into the plastic frame unit 4 and a second side surface 212 opposite to the first side surface 211. The second side surface 212 has two light guide plate positioning portions at opposite corners. 213. In this embodiment, each of the light guide plate positioning portions 213 has a positioning groove 214.

Referring to Figures 2, 5 and 6, the light source member 22 is housed in the lamp cover 25. In this embodiment, the light source member 22 is a plurality of cold cathode lamps or LED light sources, and the optical film group 24 has a diffusion film, a gain film, and the like, and the lamp cover 25 is directly locked by the screw. On the plastic frame unit 4, the lamp cover 25 can directly contact the surrounding air, so that the heat of the light source member 22 can be transmitted through the lamp cover 25. The heat of the conventional light source member needs to pass through the bottom plate 15 and the plastic frame unit 13 and The fixing frame 14 is transferred, and as shown in FIG. 1, the heat dissipation effect of the present invention is better.

The liquid crystal panel 3 has a rectangular plate shape and has a long axis direction X and a short axis direction Y perpendicular to each other, a bottom surface of the light entering, a top surface of the light emitting surface, and four side surfaces stacked on the backlight. Above unit 2.

The plastic frame unit 4 includes a frame body 41 having a quadrangular shape, and a partition portion 42 extending inwardly from the inner side of the frame body 41 to the backlight unit 2 and the liquid crystal panel 3 and having a quadrangular shape. An outer ring portion 43 extending upwardly from the periphery of the body 41 and having a quadrangular outer ring portion 43 , a limiting portion 44 extending inwardly from the same side end of the outer ring portion 43 , and two limiting portions 44 , the outer ring portion 43 and the The partitioning portion 42 defines a liquid crystal panel slot 45 for inserting a side surface of the liquid crystal panel 3, a bottom portion 46 extending from the periphery of the frame body 41 to surround the bottom portion 46 of the backlight unit 2, and a bottom portion a bottom portion 47 supporting a bottom surface of the backlight unit 2, a plastic frame positioning portion 48 disposed on an inner surface of the bottom portion 46, and an inner surface of the bottom portion 46 for the light guide plate The first side surface 211 of the 21 is inserted into the light guide plate slot 49.

Referring to FIG. 7 , in the embodiment, the limiting portion 44 and the liquid crystal panel slots 45 are disposed along the long axis direction X of the liquid crystal panel 3 and are located above the light source member 22 of the backlight unit 2 . The light guide plate slot 49 is located on the opposite side of the liquid crystal panel slot 45. Each of the plastic frame positioning portions 48 has a positioning block 481 located at a corresponding positioning groove 214 of the corresponding light guide plate positioning portion 213.

It should be noted that the plastic frame unit 4 is made of plastic, so that each of the four sides has elasticity of bending deformation.

Referring to FIGS. 2, 3, and 5, the fixing frame 5 is disposed on the plastic frame unit 4 along the longitudinal direction X of the liquid crystal panel 3 and on the opposite side of the liquid crystal panel slot 45. In this embodiment, the fixing frame is fixed. The material of the frame 5 is metal. The fixing frame 5 is disposed on a side of the plastic frame unit 4 away from the light source member 22 of the backlight unit 2, and has a top cover 51 that is disposed on a partial top surface of the liquid crystal panel 3. And a side cover 52 extending downward from the top cover 51 and partially covering the outer ring portion 43. In this embodiment, the top cover 51 of the liquid crystal panel 3 is disposed on a side of the top surface of the liquid crystal panel 3 away from the light source member 22 of the backlight unit 2, the side The outer cover portion 43 of the cover plate 52 is a side portion of the light source member 22 that covers the outer ring portion 43 away from the backlight unit 2; in addition, in the embodiment, the fixed frame 5 is inverted U. The top cover 51 and the side cover 52 are respectively opposite L-shaped sides.

It should be noted that the limiting portion 44 and the liquid crystal panel slots 45 may also be disposed along the short axis direction Y of the liquid crystal panel 3, not directly above the light source member 22 of the backlight unit 2, which is The fixing frame 5 is also disposed on the plastic frame unit 4 in the long axis direction X of the liquid crystal panel 3 but not on the opposite side of the liquid crystal panel slots 45, and the same effect can be achieved.

Referring to FIGS. 2, 3, and 6, the fixing unit 6 includes a plurality of top hooks 61 disposed on one of the top cover 51 and the plastic frame unit 4, and a plurality of the top cover 51 and the plastic frame unit. a top card slot 62 of the other of the four, a side hook 63 disposed on the side cover 52 and the plastic frame unit 4, and a plurality of side cover 52 and the plastic frame unit The other one of the four sides is provided with a side card slot 64 for the side hooks 63 to be engaged, wherein the top card hooks 61 and the top card slots 62 are detachably fastened to each other. In this embodiment, the number of the top hooks 61 is four, and the outer ring portion 43 of the plastic frame unit 4 is away from a side of the light source member 22 of the backlight unit 2, and the top card slot The number of 62 is four, and is disposed on the top cover 51. The number of the side hooks 63 is four, and the outer ring portion 43 of the plastic frame unit 4 is away from the light source member 22 of the backlight unit 2. The side portions, the number of the side card slots 64 are four, and are disposed on the side cover 52.

In the assembly, the reflector 23 is placed on the bottom plate portion 47, and then the light guide plate positioning portions 213 of the light guide plate 21 are positioned on the plastic frame positioning portions 48, and the frame body of the plastic frame unit 4 is utilized. Each of the four sides of the 41 has a bending deformation elasticity, and can be pulled outward to completely accommodate the light guide plate 21. After the first side surface 211 of the light guide plate 21 is engaged with the light guide plate slot 49, the light guide can be used. The piece 21 is precisely fixed to the plastic frame unit 4.

Then, the lamp cover 25 and the optical film group 24 are combined with the plastic frame unit 4, and the backlight unit 2 is fixed by the partition portion 42 and the bottom plate portion 47, and the liquid crystal panel 3 is inserted into the liquid crystal panel on one side. After the other three sides are placed on the top surface of the partition portion 42 in the panel slot 45, the fixing frame 5 can be disposed on the top surface of the liquid crystal panel slot 45 opposite to the liquid crystal panel slot 45. After the top hooks 61 are engaged with the top card slots 62, the fixing frame 5 and the liquid crystal panel 3 and the plastic frame unit 4 can be firmly combined, compared to the existing liquid crystal display modules. The fixing frame 5 of the present invention can be formed by stamping and processing a long plate-shaped material, and does not need a large-area iron plate as a raw material, so that the volume of the fixing frame 5 can be greatly reduced, thereby reducing the manufacturing cost.

The fixing unit 6 restricts a movement in the Y direction by using the top hooks 61 and the top card slots 62, respectively, and restricting a Z direction by using the side hooks 63 and the side slots 64. Move to make the overall stability even better.

In addition, the lamp cover 25 is fixed from the bottom surface of the plastic frame unit 4 in a screw-locking manner. Since the position of the light guide plate 21 has been accurately fixed, the light source member 22 in the lamp cover 25 is opposite to the light guide plate 21 The position can be accurately positioned.

Since the plastic frame unit 4 having elasticity can be easily mounted and positioned by the backlight unit 2, the position of the lamp cover 25 can be reduced because the volume of the fixing frame 5 is reduced compared with the conventional liquid crystal display module. The outermost side of the air contacts the outer peripheral air, so that the light source member 22 can be placed farther away from the light guide plate 21 to make the light source more uniform, thereby improving the quality of the display, and also because the light cover 25 is directly and externally Air contact can also get better heat dissipation.

Referring to Figure 8, a second preferred embodiment of the present invention is similar to the second preferred embodiment, with the main differences being:

Each of the plastic frame positioning portions 48 has a connecting portion 482 connected to the bottom portion 46, a swing arm portion 483 connected to the connecting portion 482 and elastically bendable in the short axis direction, and a connecting arm portion 483 for The corresponding positioning block 481 of the corresponding light guide plate positioning portion 213 is engaged and positioned, as shown in FIG.

Therefore, the second preferred embodiment can achieve the same purpose and effect as the above-described first preferred embodiment, and can be assembled by inserting the light guide plate 21 from the side, since the swing arm portion 483 The locating member 481 is fixed to the light guide plate positioning portion 213 to fix the light guide plate 21 when the light guide plate 21 is inserted into the light guide plate 21 and is inserted into the position. The effect is to improve the convenience of assembly.

In summary, the liquid crystal panel 3 can be effectively fixed by the mutual engagement of the plastic frame unit 4 and the fixing frame 5 of the plastic frame unit 4, so that the volume of the fixing frame 5 can be greatly reduced and reduced. Since the production cost, it is indeed possible to achieve the object of the present invention.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent.

2. . . Backlight unit

twenty one. . . Light guide

211. . . First side

212. . . Second side

213. . . Light guide plate positioning part

214. . . Positioning groove

twenty two. . . Light source

twenty three. . . Reflective sheet

twenty four. . . Optical film set

25. . . lampshade

3. . . LCD panel

4. . . Plastic frame unit

41. . . Frame body

42. . . Separator

43. . . Outer ring

44. . . Limiting department

45. . . LCD panel slot

46. . . Bottom

47. . . Bottom plate

48. . . Plastic frame positioning department

481. . . Positioning block

482. . . Connection

483. . . Swing arm

49. . . Light guide slot

5. . . Fixed frame

51. . . Top cover

52. . . Side cover

6. . . Fixed unit

61. . . Top card hook

62. . . Top card slot

63. . . Side hook

64. . . Side card slot

X. . . Long axis direction

Y. . . Short axis direction

1 is a cross-sectional view of a conventional liquid crystal display module;

Figure 2 is an exploded perspective view of a first preferred embodiment of the present invention;

Figure 3 is a partial exploded view of the first preferred embodiment;

Figure 4 is a plan view of the first preferred embodiment;

Figure 5 is a cross-sectional view taken along line V-V of Figure 4;

Figure 6 is a cross-sectional view taken along line VI-VI of Figure 4;

Figure 7 is a bottom plan view of the plastic frame unit of the first preferred embodiment; and

FIG. 8 is a schematic view showing the installation of a plastic frame unit and a backlight unit according to a second preferred embodiment of the present invention.

2. . . Backlight unit

twenty one. . . Light guide

211. . . First side

212. . . Second side

213. . . Light guide plate positioning part

214. . . Positioning groove

twenty three. . . Reflective sheet

twenty four. . . Optical film set

25. . . lampshade

3. . . LCD panel

4. . . Plastic frame unit

44. . . Limiting department

45. . . LCD panel slot

47. . . Bottom plate

48. . . Plastic frame positioning department

5. . . Fixed frame

6. . . Fixed unit

X. . . Long axis direction

Y. . . Short axis direction

Claims (13)

A liquid crystal display module having a simple assembly structure, comprising: a backlight unit, comprising a light guide plate; a liquid crystal panel stacked on the backlight unit and having a long axis direction; and a plastic frame unit, including a frame body, a partition extending inwardly from the frame body to the backlight unit and the liquid crystal panel, an outer ring portion extending upward from a periphery of the frame body, and at least one extending inwardly from the outer ring portion a limiting portion, a light guide plate slot extending from a periphery of the frame body to surround the bottom periphery of the backlight unit, and at least one inner surface of the bottom portion for inserting one side of the light guide plate And at least one liquid crystal panel slot defined by the limiting portion, the outer ring portion and the partition portion for inserting a side surface of the liquid crystal panel, wherein the light guide plate slot is located on an opposite side of the liquid crystal panel slot . The liquid crystal display module with a simple assembly structure according to the first aspect of the patent application, further comprising a fixing frame disposed on the plastic frame unit along a long axis direction of the liquid crystal panel, and having a cover a top cover of the partial top surface of the liquid crystal panel, and a side cover extending downward from the top cover and partially covering the outer ring portion of the plastic frame unit. The liquid crystal display module with a simple assembly structure according to claim 2, further comprising a fixing unit, wherein the fixing unit comprises at least one top card disposed on one of the top cover and the plastic frame unit a hook, and at least one top card slot disposed on the other of the top cover and the plastic frame unit, wherein the top hook and the top card slot are ok Fastened. A liquid crystal display module having a simple assembled structure according to the second aspect of the patent application, wherein the fixing frame is made of metal. The liquid crystal display module of the present invention, wherein the fixing unit further includes at least one side hook disposed on one of the side cover and the plastic frame unit, and At least one side card slot disposed on the other side of the side cover and the plastic frame unit and engaged by the side hook. The liquid crystal display module with a simple assembled structure according to the first and fifth aspects of the patent application, wherein the fixing frame has an inverted U shape and has an inverted L shape. The liquid crystal display module with a simple assembly structure according to the first and fifth aspects of the patent application, wherein the plastic frame unit further includes a bottom plate portion connected to the bottom portion and supporting a bottom surface of the backlight unit . The liquid crystal display module with a simple assembly structure according to the seventh aspect of the invention, wherein the light guide plate has a first side inserted in the socket of the light guide plate, and a first side opposite to the first side The second side surface has two light guide plate positioning portions at opposite corners, and the plastic frame unit further includes two plastic frame positioning portions disposed on the inner surface of the bottom cover portion for positioning the light guide plate positioning portions. A liquid crystal display module having a simple assembly structure according to the eighth aspect of the invention, wherein each of the light guide plate positioning portions has a positioning groove, and each of the plastic frame positioning portions has a positioning block. Liquid having a simple assembled structure according to item 8 of the patent application scope The crystal display module, wherein each of the plastic frame positioning portions has a connecting portion connecting the bottom surrounding portion, a swing arm portion connecting the connecting portion and elastically bending in a short axis direction, and a connecting arm portion A positioning block for engaging and positioning the corresponding light guide plate positioning portion. The liquid crystal display module with a simple assembly structure according to the seventh aspect of the invention, wherein the backlight unit further comprises a lamp cover detachably disposed on the plastic frame unit and adjacent to the light guide plate, and is mounted on the lamp cover Light source inside. A liquid crystal display module having a simple assembled structure according to the first aspect of the invention, wherein the frame bodies of the plastic frame unit each have elasticity of bending deformation. A liquid crystal display module having a simple assembled structure according to claim 2, wherein the fixing frame is located on an opposite side of the liquid crystal panel slot.