CN211061812U - A liquid crystal display device - Google Patents

Abstract

The utility model discloses a liquid crystal display device relates to and shows technical field. The liquid crystal display device includes: a liquid crystal panel for displaying an image; the diffusion plate is used for homogenizing light, and the liquid crystal panel is positioned on the light emitting side of the diffusion plate; the back plate comprises a first stepped part and a second stepped part, the second stepped part is used for bearing the liquid crystal panel, and the first stepped part is used for bearing the diffusion plate. Compared with the prior art, the embodiment of the utility model provides an in, certain distolateral frame that no longer needs of liquid crystal display device realizes the assembly of diffuser plate and liquid crystal display panel, reduces whole display device's cost from this, and has improved production assembly efficiency.

Description

A liquid crystal display device

technical field

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

Background technique

An LCD TV generally includes a backlight module and a liquid crystal panel. According to the different light incident modes of the backlight module, the backlight module can be divided into a direct-type backlight module and an edge-type backlight module. With the continuous development and maturity of the display technology field, the integration and low cost of LCD TVs are the development direction in the industry.

SUMMARY OF THE INVENTION

The utility model provides a liquid crystal display device, which has a high degree of integration and low cost.

A liquid crystal display device comprising:

a liquid crystal panel, which is used for displaying images;

a diffuser plate, the diffuser plate is used to homogenize the light, and the liquid crystal panel is located on the light-emitting side of the diffuser plate;

The backboard is a square structure as a whole, including the sky side, the left side, the right side and the ground side, wherein the sky side and the ground side are opposite, the left side and the right side are opposite, and the sky side is respectively connected with one end of the left side and the ground side. One end of the right side is connected, the ground side is connected to the other end of the left side and the other end of the right side respectively, and on at least one end of the sky side, the left side and the right side of the back panel, the back panel includes A first step portion and a second step portion, the second step portion is used for supporting the liquid crystal panel, and the first step portion is used for supporting the diffusion plate.

According to the present invention, in the liquid crystal display device, the back plate has a second step portion for supporting the liquid crystal panel and a first step portion for supporting the diffuser plate, that is, in the present invention, the back plate is used to complete the diffuser plate and the diffuser plate. For the assembly of the liquid crystal panel, compared with the prior art, in the embodiment of the present invention, some end sides of the liquid crystal display device no longer require a middle frame to realize the assembly of the diffuser plate and the liquid crystal panel, thereby reducing the cost of the entire display device, And improve the production and assembly efficiency.

Description of drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following briefly introduces 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 just some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

1 is a schematic diagram of an exploded structure of a liquid crystal display device according to an embodiment of the present invention;

FIG. 2 is a schematic three-dimensional structure diagram of the backplane 110;

3 is a cross-sectional view of the liquid crystal display device in FIG. 1 along the direction A-A1;

4 is a cross-sectional view of the back plate 110 along the A-A1 direction;

FIG. 5 is a perspective structural view of the back plate 110 and the rubber strip 400 after being assembled.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal" , "top", "bottom", "inside", "outside" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, only for the convenience of describing the present utility model and simplifying the description, rather than indicating Or imply that the referred device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation of the present invention.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a contact connection, or a Removal and connection, or integral connection; for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

FIG. 1 is an exploded perspective view of a liquid crystal display device according to an embodiment of the present invention, and FIG. 2 is a schematic three-dimensional structure diagram of a backplane 110 .

Referring to FIG. 1 , the liquid crystal display device 10 includes a backlight module 100 and a liquid crystal panel 200 .

When viewed in a plan view, the liquid crystal display device 10 has a rectangular shape having short sides and long sides, the direction of the short sides being referred to as a first direction D1, and the direction of the long sides being referred to as a second direction D2. The second direction D2 is substantially perpendicular to the first direction D1. The backlight module 100 and the liquid crystal panel 200 are sequentially stacked along a third vertical direction D3 substantially orthogonal to the plane of the first and second directions D1 and D2.

The liquid crystal panel 200 is used for displaying an image, and includes a display area 201 and a circuit board 202 located on one side of the display area 201 , and the entire liquid crystal panel 200 is driven and displayed through the circuit board 202 .

Along the emitting direction of the light in the liquid crystal display device 10 , the backlight module 100 sequentially includes a backplane 110 , a light source 120 , a reflection sheet 130 , a diffusion plate 140 , and a middle frame 150 that play a supporting role.

The liquid crystal display device 10 includes a sky side 101 , a left side 102 , a right side 103 and a ground side 104 , wherein the sky side 101 is opposite to the ground side 104 , the left side 102 is opposite to the right side 103 , and the sky side 101 is respectively opposite to one end of the left side 102 It is connected to one end of the right side 103 , and the ground side 104 is respectively connected to the other end of the left side 102 and the other end of the right side 103 .

Correspondingly, the liquid crystal panel 200 , the back plate 110 , the reflection sheet 130 , and the diffusion plate 140 in the liquid crystal display device also include a sky side, a left side, a right side, and a ground side, respectively.

The light source 120 generates light, which includes a plurality of LED light bars arranged along the first direction D1, and the plurality of LED light bars are arranged substantially in parallel. The light bar includes a circuit board and a plurality of LED lights located on one side of the circuit board, the other side of the circuit board is in contact with the backplane, and the light bar is fixed on the backplane 110 through a connecting member.

The reflection sheet 130 is used to reflect the light to the light-emitting direction. The reflection sheet 130 is fixed on the surface of the backplane 110 , and a plurality of through holes for exposing the LED lamps are provided on the reflection sheet 130 .

The diffuser plate 140 refracts and reflects the light from the light source 120, thereby achieving uniformity of the light.

The middle frame 150 is located on one side of the liquid crystal panel 200 , and is used for cooperating with the front case (not shown in the figure) to carry and shield the circuit board 202 located on one side of the liquid crystal panel 200 .

The backlight module 100 further includes a diffuser plate bracket located on the back plate 110 and used to support the diffuser plate 140 , thereby ensuring the light mixing distance of the liquid crystal display device 10 .

As shown in FIG. 2 , the backplane 110 is a square structure as a whole, including the sky side 101 , the left side 102 , the right side 103 and the ground side 104 , wherein the sky side 101 is opposite to the ground side 104 , and the left side 102 is opposite to the right side 103 , the sky side 101 is respectively connected with one end of the left side 102 and one end of the right side 103 , and the ground side 104 is respectively connected with the other end of the left side 102 and the other end of the right side 103 .

In the embodiment of the present invention, the three-side structures of the sky side 101 , the left side 102 and the right side 103 of the back plate 110 are the same.

The ground side 104 of the backplane 110 does not have the above structure, and the ground side 104 is an opening.

3 is a cross-sectional view of the liquid crystal display device in FIG. 1 along the A-A1 direction, FIG. 4 is a cross-sectional view of the backplane 110 along the A-A1 direction, and FIG. 5 is a three-dimensional structural view of the backplane 110 and the rubber strip 400 after assembly .

As shown in FIG. 3-5, taking one of the left side or the right side of the backplane 110 as an example for illustration,

The back plate 110 includes a flat plate portion 111, a first stepped portion 112, a second stepped portion 113, and a side wall portion 114 connected to the first stepped portion 112 and the second stepped portion 113, and connected to the flat plate portion 111 and the first stepped portion Transition portion 115 between portions 112 .

Wherein, the sky side, the left side and the right side of the back plate 110 all have the above structures.

The plane where the first step portion 112 is located and the plane where the second step portion 113 is located are substantially parallel to the plane where the flat plate portion 111 is located.

The first step portion 112 and the second step portion 113 have a certain extension length in the same direction, the first step portion 112 , the second step portion 113 and the side wall portion connected to the first step portion 112 and the second step portion 113 114 forms a C-shape, that is, an accommodating space S is formed between the first step portion 112 , the side wall portion 114 and the second step portion 113 .

The first step portion 112 carries the reflection sheet 130 and the diffusion plate 140 in sequence, that is, the edges of the reflection sheet 130 and the diffusion plate 140 are placed in the accommodating space S.

Wherein, the reflection sheet 130 and the diffuser plate 140 are directly placed on the first step portion 112 without a fixed structure.

In the embodiment of the present invention, the reflection sheet 130 and the diffuser plate 140 are fixed on the ground side 104 of the liquid crystal display device 10 by bonding.

The liquid crystal panel 200 is fixed on the second step portion 113 , the sides of the liquid crystal panel 200 are not blocked, and the liquid crystal panel 200 is in a suspended state as a whole, which has a good visual effect and a sense of technology.

The liquid crystal panel 200 is fixed on the second step portion 113 by the adhesive member 300 .

Specifically, the adhesive member 300 may be a foam tape. In addition to the function of bonding and fixing, the foam tape also has a buffering effect to ensure that the components will not be easily damaged.

In the embodiment of the present invention, the assembly of the reflection sheet 130 , the diffuser plate 140 and the liquid crystal panel 200 is completed by the first step portion 112 and the second step portion 113 . Compared with the prior art, in the embodiment of the present invention Therefore, the middle frame is no longer required for the upper, left and right sides of the liquid crystal display device 10 to realize the assembly of the reflection sheet, the diffuser plate and the liquid crystal panel, thereby reducing the cost of the entire display device and improving the production and assembly efficiency.

In the embodiment of the present invention, due to the limitation of the processing technology, the height of the accommodating space S, that is, the distance between the first step portion 112 and the second step portion 113 is at least 4 mm, that is, the first step portion 112 and the second step portion 112. The distance between the steps 113 is greater than or less than 4 mm, and the total thickness of the reflection sheet 130 and the diffuser plate 140 is 1.15 mm, the reflection sheet 130 and the diffuser plate 140 cannot fill the accommodation space S, and the liquid crystal display device 10 further includes a rubber strip 400 , the rubber strip 400 is disposed on the side surface of the second step 113 facing the first step portion 112 . The existence of the rubber strip 400, on the one hand, fills the accommodating space S, which can prevent the reflective sheet and the diffuser plate located under it from bouncing, and further fixes the diffuser plate, and on the other hand, the rubber strip 400 is located above the diffuser plate. , which can prevent the optical component located at the top of the optical component from being damaged by friction with one side of the second step portion 113 .

In the embodiment of the present invention, the thickness h of the rubber strip 400 is between 1 mm and 2.5 mm, so as to ensure the above two functions, and to facilitate the assembly of the reflector and the diffuser on the first step portion 112 and the first step portion 112. between the two step parts 113 .

In the embodiment of the present invention, the width of the second stepped portion 113 is 6 mm-10 mm, in order to ensure that the liquid crystal panel 200 and the second stepped portion 113 have sufficient bonding area and the display device has a narrow frame.

In the embodiment of the present invention, the width d of the rubber strip 400 is 2mm-4mm. The adhesive strip 400 is pasted on the side surface of the second step 113 facing the first step part 112 and close to the edge of the second step 113 , which is beneficial for the attachment tool to stick the adhesive strip 400 on the second step 113 facing the first step part 112 side surface.

In the embodiment of the present invention, an adhesive strip 400 is adhered to each of the three sides of the sky side, the left side and the right side of the back panel 110 , so that the diffusion panel can be more stabilized.

Optionally, the adhesive strip 400 can also be adhered only to the sky side of the backplane 110, which can further reduce the cost.

In the embodiment of the present invention, the transition portion 115 includes a first transition portion 1151 and a second transition portion 1152 that are connected to each other, the first transition portion 1151 is connected to the first stepped portion 112 , and the second transition portion 1152 is connected to the flat plate portion 111 . .

The existence of the transition portion 115 provides a sufficient light mixing distance between the light source 120 and the diffuser plate 140 , and ensures that the light emitted by the light source 120 can be mixed evenly with the reflection sheet 130 .

Since the plane where the first step portion 112 is located is parallel to the plane where the flat plate portion 111 is located, in order to ensure a smooth transition between the first step portion 112 and the flat plate portion 111 , in the cross-sectional view shown in FIG. 4 , the first transition portion 1151 The angle with the plane where the flat plate portion 111 is located is larger than the angle between the second transition portion 1152 and the plane where the flat plate portion 111 is located, that is, the connection between the two is steep at first and then gentle. The backplane is more layered, and the thickness of the backplane can be weakened through connections at different angles. In terms of visual experience, it is lighter and thinner; compared with the connection that is slow at first and then steep, it is more in line with people's aesthetic feelings and has a more beautiful appearance. .

In the embodiment of the present invention, the flat plate portion 111 , the transition portion 115 , the first stepped portion 112 , the side wall portion 114 and the second stepped portion 113 of the back plate 110 are integrated into one structure, which maximally reflects the performance of the liquid crystal display device. degree of integration and concentration.

In order to form the integrated structure of the back plate 110, the processing can be performed by means of integral bending. The integral bending process enhances the strength of the back plate 110. Under the condition that the same strength requirements are met, the The thickness can be thinner, and at the same time, the integrated bending method is adopted, and there is no interface, which ensures a good appearance effect.

In the embodiment of the present invention, the liquid crystal display device 10 may further include an optical film 160, and the optical film 160 is located on the light-emitting side of the diffuser plate 140 for brightening the light.

In another embodiment of the present invention, the liquid crystal display device 10 may not include the optical film 160, and the optical film 160 can be omitted by adjusting the screen printing method of the diffusion plate 140, thereby further reducing the production cost.

The assembling process of the liquid crystal display device 10 will be described below.

When assembling the liquid crystal display device 10, firstly, the adhesive strip 400 is pasted on at least one of the sky side 101, the left side 102 and the right side 103 of the backplane 110 as shown in FIG. The sheet 130 and the diffusion plate 140 are inserted into the accommodating space S on the backboard 110 from the ground side 104 of the backboard 110 , and then the liquid crystal panel 200 is pasted and assembled to realize the assembly of the liquid crystal display device 10 .

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited to this. Replacement should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (14)

1. A liquid crystal display device, wherein the liquid crystal display device comprises: a liquid crystal panel, which is used for displaying images; a diffuser plate, the diffuser plate is used to homogenize the light, and the liquid crystal panel is located on the light-emitting side of the diffuser plate; The backboard is a square structure as a whole, including the sky side, the left side, the right side and the ground side, wherein the sky side and the ground side are opposite, the left side and the right side are opposite, and the sky side is respectively connected with one end of the left side and the ground side. One end of the right side is connected, and the ground side is connected to the other end of the left side and the other end of the right side respectively, and at least one end of the sky side, the left side and the right side of the back panel, the back panel includes a first A step portion and a second step portion, the second step portion is used to support the liquid crystal panel, and the first step portion is used to support the diffusion plate. 2. The liquid crystal display device according to claim 1, wherein: The back plate further includes a rubber strip disposed on the side of the second step portion facing the first step portion. 3. The liquid crystal display device according to claim 2, wherein: The width of the second step portion is 6mm-10mm, and the width of the rubber strip is 2mm-4mm. 4. The liquid crystal display device according to claim 2, wherein: The thickness of the rubber strip is 1mm-2.5mm. 5. The liquid crystal display device according to claim 2, wherein: The distance between the first step portion and the second step portion is greater than or equal to 4 mm. 6. The liquid crystal display device according to claim 1, wherein: The back plate further includes a side wall portion connecting the first step portion and the second step portion, the first step portion and the second step portion have a certain extension length in the same direction, and the The first step part, the second step part and the side wall part connected to the first step part and the second step part form a C shape, the first step part, the side wall part An accommodating space is formed between it and the second step part, and the diffuser plate is placed in the accommodating space enclosed by the first step part, the second step part and the side wall part. 7. The liquid crystal display device according to claim 6, wherein: The back plate further includes a flat plate portion and a transition portion connecting the flat plate portion and the first stepped portion, the flat plate portion is used for placing the light source, the plane where the first stepped portion is located and the second stepped portion The plane on which the side wall portion is located is substantially parallel to the plane on which the flat plate portion is located, and the plane on which the side wall portion is located is substantially perpendicular to the plane on which the flat plate portion is located. 8. The liquid crystal display device according to claim 7, wherein: The transition portion includes a first transition portion and a second transition portion that are connected to each other, the first transition portion is connected to the first stepped portion, the second transition portion is connected to the flat plate portion, and the first transition portion The included angle with the plane where the flat plate portion is located is larger than the included angle between the second transition portion and the plane where the flat plate portion is located. 9. The liquid crystal display device according to claim 1, wherein: The liquid crystal display device further includes a reflection sheet, the reflection sheet is placed on the back plate, the reflection sheet is located on the light incident side of the diffuser plate, and the edge of the reflection sheet is located at the first step portion. 10. The liquid crystal display device according to claim 7, wherein: The first step portion, the side wall portion, the second step portion, the transition portion and the flat plate portion are integrally formed. 11. The liquid crystal display device according to claim 9, wherein: The reflection sheet and the diffusion plate are directly placed on the first step portion. 12. The liquid crystal display device according to claim 1, wherein: The liquid crystal panel is fixed on the second step part by an adhesive member, and the sides of the liquid crystal panel are not blocked. 13. The liquid crystal display device according to claim 7, wherein: The light source generates light, and includes a plurality of LED light bars arranged along a first direction, the plurality of LED light bars are arranged substantially in parallel, the light bar includes a circuit board and a plurality of LED lights on one side of the circuit board, The other side of the circuit board is in contact with the backplane, and the light bar is fixed on the backplane through a connecting member. 14. The liquid crystal display device according to claim 1, wherein: The three sides of the sky side, the left side and the right side of the backplane have the same structure, and the ground side of the backplane is an opening; The liquid crystal display device further includes a middle frame, which is located at the ground side end of the back plate and is used for cooperating with the front case to carry and shield the circuit board on one side of the liquid crystal panel.

Images