CN205594259U - Liquid crystal display device - Google Patents

Abstract

The utility model discloses a liquid crystal display device. The liquid crystal display device comprises a front shell, a back plate, and a middle frame installed between the front shell and the back plate. A display screen and an optical film are arranged between, and the liquid crystal display device also includes a pressing film member, and the pressing film member includes a film located between the optical film and the display screen and used to press the optical film A limiting part, and a fixing part extending from the limiting part and fixedly connected with the front shell, the middle frame or the back plate. In this way, the optical film is installed more stably, and the problem of the optical film falling off from the middle frame is avoided.

Description

Liquid crystal display device

technical field

The utility model relates to the technical field of displays, in particular to a liquid crystal display device.

Background technique

The existing side-entry display device includes a front case, a back plate and a middle frame, the middle frame is installed between the front case and the back plate, an optical film is also arranged between the middle frame and the front case, and the optical film is covered. A display screen, a light guide plate is provided between the middle frame and the back panel, and a light source is set toward the light incident surface of the light guide plate; there is no fixed connection between the optical film and the middle frame, and the optical film and the display screen There is still a certain gap between them, so that when the side-entry display device is transported or subjected to impact, the optical film will easily fall off from the middle frame and come into contact with the display screen, which will cause the display screen and the optical film to be worn. affect the display effect of the side-entry display device.

Utility model content

The utility model provides a liquid crystal display device, which aims at making the installation of the optical film more stable.

In order to achieve the above object, the utility model proposes a liquid crystal display device, which includes a front case, a back plate, and a middle frame installed between the front case and the back plate, and the middle frame and the front A display screen and an optical film are arranged between the shells, and the liquid crystal display device also includes a film-pressing part, which is located between the optical film and the display screen and is used to press the optical film. The limiting portion of the sheet, and the fixing portion extending from the limiting portion and fixedly connected with the front case, the middle frame or the back plate.

Preferably, the surface of the middle frame facing the front shell is concavely provided with a channel penetrating from the inside to the outside, and the limiting part extends to the outside of the middle frame after passing through the channel to form the fixing part , the fixing portion is fixedly connected to the outer surface of the middle frame.

Preferably, the outer side of the middle frame is concavely provided with an installation groove communicating with the channel, and the fixing part is fixedly installed in the installation groove.

Preferably, the fixing part includes an adhesive segment arranged in parallel with the limiting part, and a connecting segment connecting the adhesive segment and the limiting part, and the adhesive segment faces the mounting groove The side walls of the display screen are bonded.

Preferably, the surface of the middle frame facing the front shell is provided with a positioning groove communicating with the channel, and the side edge of the optical film is protruded with a lug matching the positioning groove, and the limiting part Covering the positioning groove to press the lug installed in the positioning groove.

Preferably, a positioning post protrudes from the positioning groove toward the bottom wall of the front case, the lug is correspondingly provided with a positioning hole matching with the positioning post, and the limiting part is provided with a positioning post matching the positioning post. Aligned receiving holes.

Preferably, the surface of the middle frame facing the backboard is provided with a slot opening facing the backboard, and the inner surface of the backboard is provided with a bracket, and the bracket includes a connection fixedly connected to the backplane part, and a hook protruding from the surface of the connecting part facing away from the backboard, the hook is engaged with the slot so that the connecting part and the slot face toward the backboard surface abutment.

Preferably, the material of the pressure film member is metal or rubber.

The utility model is provided with a film-pressing part, the limiting part of the film-pressing part extends between the display screen and the optical film and suppresses the optical film, the fixed part of the film-pressing part is connected with the front shell and the middle frame of the liquid crystal display device Or the backplane is fixedly connected, and the optical film is more firmly installed on the middle frame through the pressing of the limiting part of the pressing film, so that it is ensured that the optical film will not fall off from the middle frame, and the optical film is also The limiting part of the pressing film part is set at a distance from the display screen, so that the optical film will not be in direct contact with the display screen, avoiding the mutual abrasion of the optical film and the display screen, and ensuring the display effect of the liquid crystal display device .

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the present utility model, and those skilled in the art can also obtain other drawings according to the structures shown in these drawings without creative work.

Fig. 1 is an exploded view of an embodiment of a liquid crystal display device of the present invention;

Fig. 2 is the enlarged schematic diagram of part A in Fig. 1;

Fig. 3 is a schematic structural view of the pressure film part in Fig. 1;

Fig. 4 is a structural schematic diagram of the middle frame in Fig. 1;

Fig. 5 is an enlarged schematic diagram of part B in Fig. 4;

Fig. 6 is a sectional view along C-C among Fig. 4;

FIG. 7 is a cross-sectional view of the liquid crystal display device of the present invention.

Explanation of reference numbers:

label name label name 100 Liquid crystal display device 151 lugs 110 front shell 1511 positioning hole 111 front panel 160 Film parts 112 side frame 161 limit part 120 Backplane 1611 Accommodating hole 130 Middle frame 162 fixed part 131 aisle 1621 Adhesive section 132 mounting slot 1622 connecting segment 133 Locating slot 170 light guide plate 1331 positioning post 180 bracket 134 card slot 181 Connection 140 display screen 182 The hook 150 Optical film

The realization of the purpose of the utility model, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

In addition, the descriptions related to "first", "second" and so on in the present application are only for the purpose of description, and should not be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, the technical solutions of the various embodiments can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist , also not within the scope of protection required by the utility model.

The utility model provides a liquid crystal display device.

1 and 7, the liquid crystal display device 100 includes a front case 110, a back plate 120, and a middle frame 130 installed between the front case 110 and the back plate 120, between the middle frame 130 and the front case 110 is a The display screen 140 and the optical film 150, the liquid crystal display device 100 also includes a pressing film member 160, and the pressing film member 160 includes a limiting part located between the optical film 150 and the display screen 140 and used to press the optical film 150 161 , and a fixing portion 162 extending from the limiting portion 161 and fixedly connected to the front case 110 , the middle frame 130 or the back plate 120 .

Specifically, please refer to FIG. 6 together. The front shell 110 includes a front panel 111 and a side frame 112 extending from the side edge of the front panel 111 to the back panel 120. The side frame 112 and the back panel 120 are connected by screws, buckles or other components. Fixed connection; a buffer material (not shown) is also provided between the front panel 111 and the display screen 140, the buffer material is preferably foam, of course, it can also be other elastic materials; the above-mentioned liquid crystal display device 100 also includes a light guide plate 170 , the light guide plate 170 is installed between the backplane 120 and the middle frame 130 .

When assembling, first place the light guide plate 170 in the back plate 120, then place the middle frame 130 in the back plate 120, and socket with the light guide plate 170 to fix the light guide plate 170 in the back plate 120, and then place the optical film The sheet 150 is placed on the side of the middle frame 130 away from the light guide plate 170, and then a plurality of film-pressing parts 160 are fixedly installed on the middle frame 130, and the stoppers 161 of the film-pressing parts 160 press the optical film 150, so that The optical film 150 is fixed in the middle frame 130. It should be noted that the installation of the pressing film part 160 on the middle frame 130 is used as an example for illustration, and then the display screen 140 is placed on the middle frame 130 and a plurality of Press the limiting part 161 of the film member 160 so that the optical film 150 can be more firmly installed in the middle frame 130 through the pressing of the display screen 140, and finally the front case 110 is covered on the display screen 140 and connected with the back plate 120 are fixedly connected, so that the front case 110 , the display screen 140 , the middle frame 130 , the optical film 150 , the light guide plate 170 and the back plate 120 form the liquid crystal display device 100 .

It can be understood that the number and positional relationship of the above-mentioned film-pressing parts 160 can be set according to actual needs. In this embodiment, the film-pressing parts 160 can be arranged on two opposite sides of the optical film 150. Film pressing parts 160 are arranged around the sheet 150 .

The utility model is provided with a film-pressing part 160, the limiting part 161 of the film-pressing part 160 extends between the display screen 140 and the optical film 150 and suppresses the optical film 150, the fixed part 162 of the film-pressing part 160 is connected with the liquid crystal The front case 110, the middle frame 130 or the back plate 120 of the display device 100 are fixedly connected, and the optical film 150 is more firmly installed on the middle frame 130 through the pressing of the stopper 161 of the pressure film member 160, thus ensuring the optical The film 150 will not fall off from the middle frame 130, and the optical film 150 is spaced apart from the display screen 140 through the stopper 161 of the pressing film member 160, so that the optical film 150 will not be separated from the display screen 140. The direct contact prevents the optical film 150 and the display screen 140 from wearing each other, and ensures the display effect of the liquid crystal display device 100 .

It can be understood that, the above-mentioned fixing method of the pressure film member 160 and the middle frame 130 can be set according to actual needs. Further, please refer to FIG. 3 , FIG. 4 and FIG. 5 , in this embodiment, the middle frame 130 is concavely provided with a channel 131 penetrating from the inside to the outside facing the surface of the front shell 110 , and the limiting portion 161 passes through the channel 131 and extend to the outside of the middle frame 130 , the fixing part 162 is located at the outside of the middle frame 130 and is fixedly connected with the outer surface of the middle frame 130 . It can be understood that the fixing portion 162 can be fixed on the outer surface of the middle frame 130 by buckling, screwing, riveting or other connection methods, which are not listed here; the limiting portion 161 and the fixing portion 162 are The included angle is set, and the included angle is preferably 90°. In this way, it is convenient for the fixed part 162 to be attached to the outer surface of the middle frame 130, and the contact area between the fixed part 162 and the outer surface of the middle frame 130 is increased, thereby making the fixed part 162 is installed on the outer side of the middle frame 130 more stably.

Further, the outer side of the middle frame 130 is concavely provided with a mounting groove 132 communicating with the passage 131 , and the fixing portion 162 is fixedly mounted in the mounting groove 132 . It should be noted that the fixing portion 162 is installed into the installation groove 132 , thereby preventing the fixing portion 162 protruding from the outer surface of the middle frame 130 and affecting the assembly between the middle frame 130 and the front case 110 .

Based on the above embodiment, further, the fixing part 162 includes an adhesive section 1621 arranged in parallel with the limiting part 161, and a connecting section 1622 connecting the adhesive section 1621 and the limiting part 161, the adhesive section 1621 is connected with the installation The groove 132 is glued toward the sidewall of the display screen 140 . When installing the film-pressing part 160, the connecting section 1622 is first abutted against the side wall of the mounting groove 132 parallel to the outer side of the middle frame 130, and then the film-pressing part 160 is pushed along the mounting groove 132, so that the adhesive section 1621 and The mounting groove 132 abuts against the side wall of the display screen 140 , since the surface of the adhesive section 1621 facing away from the display screen 140 is provided with double-sided tape, when the adhesive segment 1621 and the mounting groove 132 abut against the side wall of the display screen 140 That is to say, the bonding is completed, which facilitates the fixed installation of the film-pressing part 160 .

In the embodiment of the present utility model, please refer to FIG. 1 , FIG. 2 , FIG. 4 and FIG. 5 , the surface of the middle frame 130 facing the front shell 110 is provided with a positioning groove 133 communicating with the channel 131 , and the side edge of the optical film 150 There are protruding lugs 151 cooperating with the positioning slots 133 , and the limiting portion 161 covers the positioning slots 133 to suppress the lugs 151 installed in the positioning slots 133 . Such setting, on the one hand, facilitates the positioning and installation of the optical film 150 in the middle frame 130, and on the other hand, prevents the part of the optical film 150 facing the display screen 140 from being blocked by the stopper 161 of the pressing film member 160 , thereby affecting the display effect of the liquid crystal display device 100 .

Based on the above embodiment, further, the positioning groove 133 protrudes toward the bottom wall of the front shell 110 with a positioning post 1331, the lug 151 is correspondingly provided with a positioning hole 1511 that matches with the positioning post 1331, and the limiting portion 161 is provided with a positioning post 1331. 1331 is aligned with the accommodating hole 1611. It can be understood that the optical film 150 is more stably installed in the middle frame 130 through the positioning of the plurality of positioning posts 1331 , and an accommodating hole 1611 aligned with the positioning posts 1331 is provided on the limiting portion 161 In this way, it is possible to effectively avoid the problem that the positioning post 1331 protruding from the positioning hole 1511 abuts against the limiting portion 161 , causing the limiting portion 161 to separate from the optical film 150 , thus making the installation of the optical film 150 unstable. It can be understood that the accommodating hole 1611 is preferably adapted to the positioning post 1331 , of course, the diameter of the accommodating hole 1611 may also be larger than the cross-sectional area of the positioning post 1331 , which is not specifically limited here.

In the embodiment of the present utility model, please refer to FIG. 6 and FIG. 7 , the surface of the middle frame 130 facing the backboard 120 is provided with a slot 134 with an opening facing the backboard 120 , and the inner surface of the backboard 120 is provided with a bracket 180 . 180 includes a connection portion 181 fixedly connected to the back plate 120, and a hook 182 protruding from the surface of the connection portion 181 facing away from the back plate 120. The surface facing the back plate 120 abuts. It can be understood that the hook 182 extends into the slot 134 and engages with the locking position on the inner wall of the slot 134 to limit the position in the direction in which the hook 182 and the slot 134 are away from each other. At the same time, the slot 134 faces The surface of the back plate 120 abuts against the connecting portion 181 to limit the position in the direction in which the hook 182 and the groove 134 approach each other, thereby realizing the fixed connection between the bracket 180 and the middle frame 130, thus eliminating the need for screws. use, the assembly time of the liquid crystal display device 100 is saved, and the production efficiency is improved.

In addition, in this embodiment, the backboard 120 is a metal composite board, that is, the outer layer is metal and the inner layer is plastic, the bracket 180 is a metal bracket, and the bracket 180 is fixedly connected to the backplane 120 through screws, bolts or other connectors. .

In an embodiment of the present invention, the pressing film member 160 is made of metal or rubber. When the film-pressing part 160 is made of metal (aluminum, copper, etc.), it can be formed by bending; when the film-pressing part 160 is made of rubber, silicone or plastic, it can be formed by injection molding.

The above are only preferred embodiments of the present utility model, and are not therefore limiting the patent scope of the present utility model. Under the utility model concept of the utility model, the equivalent structural transformations made by utilizing the specification of the utility model and the contents of the accompanying drawings, or directly /Indirect application in other related technical fields is included in the patent protection scope of the present utility model.

Claims (8)

1. a liquid crystal indicator, including fore shell, backboard and installation to described fore shell and the described back of the body Center between plate, is provided with display screen and blooming piece between described center and described fore shell, its feature exists In, described liquid crystal indicator also include press mold part, described press mold part include being positioned at described blooming piece with Between described display screen and in order to suppress the limiting section of described blooming piece and to extend from described limiting section Go out and fix, with described fore shell, center or backboard, the fixed part being connected.

2. liquid crystal indicator as claimed in claim 1, it is characterised in that described center is towards described The surface of fore shell is arranged with the passage of the most through setting, and described limiting section is backward through described passage The outside of described center extends and forms described fixed part, and described fixed part is solid with the lateral surface of described center Fixed connection.

3. liquid crystal indicator as claimed in claim 2, it is characterised in that the lateral surface of described center Being arranged with the mounting groove connecting described passage, described fixed part is fixedly installed to described mounting groove.

4. liquid crystal indicator as claimed in claim 3, it is characterised in that described fixed part include with Described limiting section parallel arrangement of bonding section and connection that described bonding section and described limiting section are connected Section, described bonding section bonding towards the sidewall of described display screen with described mounting groove.

5. liquid crystal indicator as claimed in claim 2, it is characterised in that described center is towards described The surface of fore shell is communicated with the locating slot of described passage, and the lateral margin of described blooming piece is convexly equipped with described The lug that locating slot coordinates, described limiting section covers described locating slot, is installed on described locating slot with compacting In lug.

6. liquid crystal indicator as claimed in claim 5, it is characterised in that described locating slot is towards institute The diapire stating fore shell is convexly equipped with locating dowel, and described lug is correspondingly provided with the hole, location coordinated with described locating dowel, Described limiting section is provided with and the accommodating hole of described locating dowel para-position.

7. liquid crystal indicator as claimed in claim 1, it is characterised in that described center is towards described The surface of backboard is provided with the opening draw-in groove towards described backboard, and the inner surface of described backboard is provided with support, institute State support to include fixing the connecting portion being connected with described backboard and being convexly equipped in described connecting portion and back to institute State the snap fit on the surface of backboard, described snap fit and described draw-in groove clamping, so that described connecting portion and described card Groove abuts towards the surface of described backboard.

8. the liquid crystal indicator as described in any one of claim 1-7, it is characterised in that described press mold Part is metalwork or rubber parts.