KR20210144968A - Display apparatus - Google Patents

Abstract

The present invention relates to a display apparatus wherein a reinforcing plate made of metal is provided in a support frame for preventing light leakage caused by a warpage phenomenon of the support frame when coupling a fixing screw and, more specifically, to a display apparatus comprising: a liquid crystal panel; a cover bottom located at a rear surface of the liquid crystal panel; and the support frame coupled to the liquid crystal while covering a boundary part of the cover bottom, coupled to the cover bottom and the fixing screw, and coupled to the liquid crystal panel with an adhesive member. The reinforcing plate made of metal is coupled to a coupling part of the support frame in which the liquid crystal is coupled.

Description

display device {DISPLAY APPARATUS}

The present invention relates to a display device including a support frame coupled to a cover bottom by a fixing screw and coupled to a liquid crystal panel by an adhesive member, and in particular, to prevent light leakage due to bending of the support frame when the fixing screw is coupled. It relates to a display device provided with a metal reinforcing plate on a support frame.

Recently, the global display market is in a trend of infinite competition for design differentiation and cost reduction.

For this design differentiation, the structure of the liquid crystal display module in which the end of the liquid crystal panel is drawn to the outside is disclosed. Such a structure may have a beautiful design differentiation capable of eliminating the step difference between parts on the front of the display device.

1 is a conceptual diagram illustrating a structure for coupling between a liquid crystal panel, a cover bottom, and a support frame of a conventional liquid crystal display (LCD) display device, and FIG.

1, in the conventional display device, the edge of the liquid crystal panel is exposed to the outside, and the liquid crystal panel is fixed to the support frame through the liquid crystal panel adhesive member. Although not shown, the edge of the liquid crystal panel is light leaking from the liquid crystal. Finished with sealant for leaks and appearance. In addition, a screw coupling structure (support frame fixing screw) is applied to the rear surface of the cover bottom for coupling of the support frame.

However, in this prior art, by attaching to the support frame using an adhesive member in the edge section of the liquid crystal panel, stress is generated in the liquid crystal panel according to the influence of bending, flatness, and assembly structure (screw) of the support frame. . This stress lowers the flatness and causes light leakage in a speckle pattern at the edge of the screen, as shown in FIG. 2 . In particular, the support frame by injection manufacturing is more vulnerable to light leakage due to bending than metal materials due to the post-shrinkage phenomenon. In addition, in order to minimize the stress transmitted to the liquid crystal panel, a soft foam pad is applied as the material of the liquid crystal panel adhesive member, but there is a limit to preventing light leakage, and structural improvement is required to prevent light leakage.

(0001) Domestic Registered Patent No. 10-1975214 (0020) Korean Patent Publication No. 10-2018-0031605

The technical problem to be solved by the present invention is to provide a display device having a reinforcing plate made of a metal material inside the support frame in order to solve the above-described bending phenomenon of the fixed frame, that is, a light leakage problem caused by a decrease in flatness. have.

Another technical problem to be solved by the present invention is a display device in which the bonding portion of the liquid crystal panel attached to the support frame and the liquid crystal panel adhesive member is formed in a black matrix that is coupled to the periphery of the liquid crystal panel rather than the liquid crystal panel. is to provide

A display device according to the present invention for achieving the above technical problem is a liquid crystal panel; a cover bottom positioned on the rear surface of the liquid crystal panel; and a support frame coupled to the liquid crystal panel while surrounding the edge of the cover bottom, coupled to the cover bottom by a fixing screw, and coupled to the liquid crystal panel by an adhesive member.

In addition, a reinforcing plate made of a metal material is coupled to the coupling portion of the support frame to which the liquid crystal panel is coupled.

In addition, the support frame is injection-molded, and the reinforcing plate is coupled to the support frame in an insert manner.

In addition, the reinforcing plate is characterized in that it has a shape in which a groove is formed in a front direction to which the liquid crystal panel is coupled from a rear surface to which the cover bottom is coupled.

In addition, the reinforcing plate is characterized in that it has a shape that gradually increases in width from the front to which the liquid crystal panel is coupled to the rear to which the cover bottom is coupled.

In addition, the reinforcing frame is insert-coupled to the coupling portion of the support frame to which the liquid crystal panel is coupled so that the upper end is exposed, the upper end of the reinforcing frame forms a flat portion, and the liquid crystal panel is coupled to the flat portion characterized by being

In addition, the material of the reinforcing plate is characterized in that it is composed of any one of an aluminum alloy steel sheet (AL), an electric galvanized steel sheet (EGI), and a stainless steel sheet (SUS).

In addition, the support frame is characterized in that it is coupled to the rear surface of the black matrix (Black matrix) coupled to the edge portion of the liquid crystal panel through the adhesive member.

In addition, the width of the reinforcing plate is formed to be 95 to 110% of the width of the black matrix, the height of the reinforcing plate is formed to 50 to 60% of the thickness of the support frame, and the thickness of the reinforcing plate is 0.5 to 1.0 mm. characterized in that it is composed.

The present invention described above has the following effects.

First, by forming a reinforcing plate made of a metal material inside the support frame with an insert injection method while composing the support frame with a synthetic resin material, it is possible to reduce the manufacturing cost and reinforce the rigidity, thereby preventing light leakage due to the bending phenomenon of the support frame. .

In addition, the rigidity can be increased by bending or bending the cross-sectional shape of the reinforcing plate to form a shape having a groove, and by making the cross-sectional width gradually increase, the rigidity can be further increased.

In addition, since the reinforcing plate is manufactured using an aluminum steel sheet, an electrogalvanized steel sheet and a stainless steel sheet, strength and corrosion resistance can be improved.

In addition, by bonding the black matrix bonded to the periphery of the liquid crystal panel and the support frame to each other through an adhesive member, it is possible to more effectively prevent light leakage due to a decrease in flatness compared to a method in which the black matrix is coupled directly to the liquid crystal panel.

In addition, in consideration of workability, the width of the reinforcing plate is formed to be 95 to 110% of the width of the black matrix, the height of the reinforcing plate is formed to 50 to 60% of the thickness of the support frame, and the thickness of the reinforcing plate is 0.5 to 1.0 mm. By configuring it, it is possible to provide a display device that is stable and has improved strength.

1 is a conceptual diagram illustrating a structure of a liquid crystal panel, a cover bottom, and a support frame of a conventional LCD (Liquid Crystal Display) display device coupled to each other;
2 is a view showing a light leakage occurrence area according to the flatness of the liquid crystal panel;
3 is a structural conceptual diagram according to an embodiment of the present invention in which the reinforcement plate of the display device is exposed;
4 is a structural conceptual diagram according to an embodiment of the present invention in which the reinforcement plate of the display device is inserted;
5 is a structural conceptual view according to an embodiment of the form in which a reinforcement plate of a different shape is inserted in FIG. 4;
6 is a structural conceptual diagram showing a form in which a support frame and a black matrix are attached to each other according to an embodiment of a display device according to the present invention;
7 is a structural conceptual diagram illustrating a form in which a reinforcement plate and a black matrix provided on a support frame according to an embodiment of the present invention are attached to each other.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same components are given the same reference numerals as much as possible even though they are indicated on different drawings. In addition, in describing the embodiment of the present invention, if it is determined that a detailed description of a related known configuration or function interferes with the understanding of the embodiment of the present invention, the detailed description thereof will be omitted.

In addition, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the components from other components, and the essence, order, or order of the components are not limited by the terms. When it is described that a component is “connected”, “coupled” or “connected” to another component, the component may be directly connected or connected to the other component, but between each component another component It will be understood that may also be "connected", "coupled" or "connected".

Prior to explaining the display device of the present invention, since the structure and characteristics of the LCM (Liquid Crystal Module) are already known technology, it is judged that there is a risk of obscuring the gist of the present invention in the following description, so a reflector, a light guide plate, an optical sheet, and a light guide plate The structure of the liquid crystal panel and the light irradiating member including the light source positioned on one side of the and related technical descriptions will be omitted.

In addition, with reference to FIG. 3 , the portions in which the liquid crystal panel 10 is located are referred to as front, front, upper, upper, and the like, and the portions located below the liquid crystal panel 10 are referred to as rear, rear, lower, and lower portions with respect to the liquid crystal panel 10 . etc., and when describing two or more structures, the above expression is applied according to their relative positions.

3 is a structural conceptual diagram according to an embodiment in which the reinforcement plate 60 of the display device of the present invention is exposed, and FIG. 4 is a structure in which the reinforcement plate 60 of the display device of the present invention is inserted according to an embodiment It is a structural conceptual diagram, and FIG. 5 is a structural conceptual diagram according to an embodiment in which the reinforcing plate 60 having a different shape in FIG. 4 is inserted.

A display device according to the present invention will be described with reference to FIGS. 3 to 5 .

First, referring to FIG. 3 , the support frame 30 is coupled to the liquid crystal panel 10 and the support frame 30 , respectively, while enclosing the side surfaces of the edges of the liquid crystal panel 10 and the cover bottom 20 . At this time, the support frame 30 is coupled to the liquid crystal panel 10 through an adhesive member 50 , and is coupled to the cover bottom 20 through a fixing screw 40 . The adhesive member 50 is attached between the rear edge of the liquid crystal panel 10 and the upper surface of one side of the support frame 30 positioned behind the edge of the liquid crystal panel 10 . The fixing screw 40 is fastened to the support frame 30 through the fixing screw 40 on the rear surface of the cover bottom 20 . At this time, as shown in FIG. 3 , the support frame 30 has a structure in which stress is generated at the fastening portion of the fixing screw 40 , inevitably bending.

In order to solve this problem, the display device according to the present invention is made of a metal material such as an aluminum alloy steel plate (AL), an electrogalvanized steel plate (EGI), and a stainless steel plate (SUS), etc. at the coupling portion of the support frame 30 to which the liquid crystal panel 10 is coupled. A reinforcing plate 60 made of

Aluminum alloy steel sheet, electro galvanized steel sheet, and stainless steel sheet are suitable as a material for preventing bending of the support frame 30 because it has excellent corrosion resistance and excellent strength. In particular, electrolytic galvanized steel sheet (EGI) is a product with increased corrosion resistance by applying zinc coating to the surface of cold or hot rolled steel sheet by electrolytic method. Excellent post-corrosion resistance. In addition, since the plating process is close to room temperature and the material properties of the original plate can be maintained, the range of material selection is wide and the workability is excellent. Compared to hot-dip galvanized steel sheet, the mechanical properties of the original sheet can be maintained as it is, and the adhesion amount can be easily controlled by the current density and line speed, making it possible to produce products with alloying, complexing, multi-layering and thinning of the plating layer. That is, it has characteristics such as superior workability, excellent paintability, excellent weldability and excellent corrosion resistance.

The support frame 30 is manufactured by injection molding, and in this case, the reinforcing plate 60 is preferably coupled to the support frame 30 in an insert manner.

Referring to FIG. 3 , the upper surface of the reinforcing plate 60 may be manufactured to be inserted in a horizontal state with the support frame 30 and exposed to the outside. Alternatively, as shown in FIG. 4 , it may be manufactured in a form completely inserted into the support frame 30 .

Since the reinforcing plate 60 has higher strength when it is in a bent or rounded shape rather than a flat shape, it may be configured in a form in which both sides are bent backward as shown in FIGS. 3 and 4 for example. At this time, in consideration of the rigidity of the reinforcing plate 60 determined by the secondary moment and the section modulus of the cross-section, the bent both sides of the reinforcing plate 60 are gradually opened in the rear outward direction, respectively, and the width is gradually widened in a trapezoidal shape. It is preferable to configure it in a shape. Alternatively, both sides of the reinforcing plate 60 may be configured to form a groove (not shown) in the front direction to which the liquid crystal panel 10 is coupled from the rear side to which the cover bottom 20 is coupled while the both sides of the reinforcing plate 60 are bent or rounded backwards. .

At this time, the upper surface of the reinforcing plate 60 may be configured with a flat portion 61 as shown in FIGS. 3 and 4 . When constructing the flat portion 61, as shown in FIG. 3, an adhesive member 50 between the exposed flat portion 61 and the rear edge of the liquid crystal panel 10 after insert bonding in a form exposed on the upper surface of the support frame 30. can be combined using In this case, the liquid crystal panel through the adhesive member 50 to the reinforcing plate 60 that adds rigidity to the support frame 30 even when the cover bottom 20 and the support frame 30 are mutually fastened through the fixing screws 40 . Since (10) is directly coupled, it is possible to more effectively prevent the bending of the support frame 30 as in the prior art. Of course, as shown in FIG. 4, the reinforcement plate 60 is insert-molded into the inside of the support frame 30, and as in the prior art, the upper surface of the support frame 30 and the rear edge of the liquid crystal panel 10 are separated from each other. Since bending of the support frame 30 is prevented by the rigidity of the reinforcing plate 60 inserted into the support frame 30 even when combined through the adhesive member 50, the support that prevents bending while configuring the same structure as in the prior art in appearance It is possible to implement a structure in which the rigidity of the frame 30 is increased.

On the other hand, FIG. 5 shows the structure of the reinforcing plate 60 forming a triangle rather than a trapezoid while forming a groove from the rear to the front. The structure of the reinforcing plate 60 is also in a form in which the width is gradually widened to the rear. However, in this case, since there is no structure of the above-described flat portion 61, it is preferable to manufacture in an inserted form as in FIG.

6 is a structural conceptual diagram illustrating a form in which the support frame 30 and the black matrix 11 are attached to each other according to an embodiment of the display device of the present invention, and FIG. 7 is a support frame according to an embodiment of the display device of the present invention. It is a structural conceptual diagram showing the form in which the reinforcement plate 60 and the black matrix 11 provided in the 30 are attached to each other.

First, referring to FIG. 6 , the present invention provides a form to prevent light leakage due to bending of the support frame 30 when the cover bottom 20 and the support frame 30 are coupled to each other through the fixing screw 40 , The black matrix 11 and the support frame coupled to the edge of the liquid crystal panel 10, rather than between the liquid crystal panel 10 and the support frame 30 as in the prior art, using an adhesive member 50 such as a pad. (30) It is a structure that combines each other. That is, by bonding the black matrix 11 and the support frame 30 to each other with the adhesive member 50, even if a bending phenomenon occurs in the fastening portion of the support frame 30 due to the fastening of the fixing screw 40, such stress Since it is not directly transmitted to the liquid crystal panel 10, it has a structure that can effectively prevent warping compared to the prior art. For reference, the black matrix 11 refers to a metal or organic thin film layer used to prevent light transmission between pixel electrodes in a matrix-type screen display device.

Of course, as shown in FIG. 7 , while bonding between the black matrix 11 and the support frame 30 using an adhesive member 50 , the reinforcement plate 60 is additionally configured on the support frame 30 . It is also possible In this case, compared to the structure of FIGS. 3 to 6 , the light leakage phenomenon due to the bending of the support frame 30 may be most effectively prevented.

In addition, although the upper surface of the reinforcing plate 60 is only shown in the form exposed to the upper portion of the support frame 30 in the drawings, the form inserted into the support frame 30 as shown in FIG. 4 and the reinforcing plate 60 as shown in FIG. 5 ) can also be implemented.

On the other hand, the reinforcing plate 60 is advantageous in rigidity as the volume increases, but there is a limitation in processing because it must be manufactured to correspond to the size of the support frame 30 . Therefore, the width c of the reinforcing plate 60 is 95 to 110% of the black matrix 11 width b, and the height e of the reinforcing plate 60 is the support frame 30 thickness d ) is formed by 50 to 60%, and the thickness of the reinforcing plate 60 is preferably configured to be 0.5 to 1.0 mm.

According to the present invention described above, by inserting the reinforcing plate 60 into the support frame 30 in an insert manner and manufacturing it, the support frame 30 as a whole is supported compared to the prior art while lowering the manufacturing cost compared to configuring the entire support frame 30 with a metal material. The rigidity of the frame 30 can be greatly improved. In addition, by bonding between the black matrix 11 and the support frame 30 rather than the liquid crystal panel 10 through the adhesive member 50, directly to the liquid crystal panel 10 through the adhesive member 50. Compared to that, the bending phenomenon of the support frame 30 can be reduced, and when used with the structure of the reinforcing plate 60, the rigidity is further improved, thereby preventing the bending of the support frame 30 due to the fastening of the fixing screw 40. At the same time, it is possible to eliminate the light leakage phenomenon of the liquid crystal panel 10 as in the prior art.

In the above, even though all components constituting the embodiment of the present invention have been described as being combined or operated in combination as one, the present invention is not necessarily limited to this embodiment. That is, within the scope of the object of the present invention, all the components may operate by selectively combining one or more. In addition, terms such as "comprises", "comprises" or "have" described above mean that the corresponding component may be inherent, unless otherwise stated, excluding other components. Rather, it should be construed as being able to further include other components. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, unless otherwise defined. Commonly used terms such as terms defined in the dictionary should be interpreted as being consistent with the contextual meaning of the related art, and are not interpreted in an ideal or excessively formal meaning unless explicitly defined in the present invention.

The above description is merely illustrative of the technical spirit of the present invention, and various modifications and variations will be possible without departing from the essential characteristics of the present invention by those skilled in the art to which the present invention pertains. Accordingly, the embodiments disclosed in the present invention are for explanation rather than limiting the technical spirit of the present invention, and the scope of the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

10: liquid crystal panel 11: black matrix
20: cover bottom 30: support frame
40: fixing screw 50: adhesive member
60: reinforcing plate 61: flat part
70: optical sheet and diffuser plate

Claims (9)

liquid crystal panel;
a cover bottom positioned on the rear surface of the liquid crystal panel;
a support frame coupled to the liquid crystal panel while surrounding the edge of the cover bottom, coupled to the cover bottom by a fixing screw, and coupled to the liquid crystal panel by an adhesive member;
A display device comprising a. According to claim 1,
A display device in which a metal reinforcement plate is coupled to a coupling portion of the support frame to which the liquid crystal panel is coupled. 3. The method of claim 2,
The support frame is injection molded,
A display device in which the reinforcing plate is coupled to the support frame in an insert manner. 4. The method of claim 3,
The reinforcing plate is
A display device having a shape in which a groove is formed from a rear surface to which the cover bottom is coupled to a front direction to which the liquid crystal panel is coupled. 5. The method of claim 4,
The reinforcing plate is
A display device having a shape that gradually increases in width from a front to which the liquid crystal panel is coupled to a rear to which the cover bottom is coupled. 4. The method of claim 3,
The reinforcement frame is
Insert-coupled in a form in which the upper end is exposed to the coupling part of the support frame to which the liquid crystal panel is coupled,
The upper end of the reinforcing frame forms a flat portion,
A display device in which the liquid crystal panel is coupled to the flat portion. 3. The method of claim 2,
The material of the reinforcement plate is,
A display device composed of any one of an aluminum alloy steel plate (AL), an electro galvanized steel plate (EGI), and a stainless steel plate (SUS). 8. The method according to any one of claims 1 to 7,
The support frame is coupled to a rear surface of a black matrix coupled to an edge of the liquid crystal panel through the adhesive member. 9. The method of claim 8,
The width of the reinforcing plate is formed to be 95 to 110% of the width of the black matrix,
The height of the reinforcing plate is formed by 50 to 60% of the thickness of the support frame,
The thickness of the reinforcement plate is a display device consisting of 0.5 ~ 1.0mm.

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