KR20100120365A - Display apparatus - Google Patents

Abstract

PURPOSE: A display apparatus is provided to relatively enlarge an image display region by narrowly displaying the width of an image non-display region. CONSTITUTION: A front panel(11) is coupled to a front side of a display module, and an optical path changing unit(111) is formed on the front panel. The optical path changing unit changes the moving path of light at an edge portion thereof, and a module bracket supports the display module at the rear portion of the front panel. A light-shielding member(12) defines an image non-display region on the front side of the module bracket, and a hanging member is prepared on the backside of the display module and allows the rotation thereof.

Description

Display apparatus

The present invention relates to a display device.

In general, a display device is a device that outputs an image or a video through an image, and includes a TV, a computer monitor, and the like.

Recently, high quality and large display devices such as liquid crystal display panels (LCDs) or plasma display panels (PDPs) have emerged.

In addition, in order to make the display image relatively larger than the display module of the same size, efforts have been made to minimize the width of the edge portion where the image is not displayed.

It is an object of the present invention to provide an assembly structure of a display device such that the width of an image non-display area formed at the front edge of the display device appears narrower than it actually is.

A display device according to an embodiment of the present invention for achieving the above object, a display module for outputting an image; A front panel coupled to the front of the display module and having a light path changing unit configured to change a movement path of light in an edge region; A module bracket attached to a rear surface of the front panel and supporting the display module; A shielding member provided on the front surface of the module bracket to define an image non-display area; A hook member rotatably provided on the rear surface of the display module and selectively coupled to the module bracket; and a back cover coupled to the rear surface of the display module to protect the display module.

According to the display device having the above configuration, the screen looks larger than other display devices having display modules of the same standard. In addition, there is an effect that the image display area of the display device is actually enlarged.

In addition, unlike the conventional display device made of a plastic injection molding to cover the front edge of the display device, there is an effect that can be assembled with the front edge area of the display device exposed to the outside as it is. Therefore, the appearance of the display device is beautifully designed, and there is an advantage that the quality of the product can be improved.

In addition, by the assembly structure of the display device according to an embodiment of the present invention, there is an advantage that the thickness is significantly reduced compared to the conventional display device.

Hereinafter, the spirit of the present invention will be described in detail through specific embodiments.

The spirit of the present invention is not limited to the embodiments shown through the drawings, it is to be understood that not only each embodiment shown but also other embodiments implemented by the combination of the respective embodiments are included in the scope of the present invention. .

1 is a front perspective view when no power is applied to a display device according to an embodiment of the present invention, FIG. 2 is a front perspective view when power is applied to the display device, and FIG. 3 is a rear perspective view of the display device. to be.

1 to 3, as shown in the display apparatus 10 according to an exemplary embodiment of the present invention, the front part is not clearly divided into an image display area and an image non-display area when power is not applied. . In detail, when power is not applied to the display module, both the front part of the display device corresponding to the image display area and the image non-display area forming the outer edge of the image display area are almost black.

In the conventional case, even when no power is applied to the display module, it is common that the boundary appears clearly due to the difference in brightness between the front portion of the display module and the non-image display area surrounding the edge of the display module. However, the display device according to the embodiment of the present invention does not clearly show the boundary between the image display area and the non-display area so that the screen size is enlarged than the actual state when the power is not applied to the display module. When the power is supplied to the display device to output an image from the display module, the image display area and the image non-display area are clearly distinguished.

On the other hand, according to the structure of the optical path changing unit (described later) according to the embodiment of the present invention, the width of the image non-display area is narrower than it is. In other words, the light refraction phenomenon is caused by the optical path changing unit formed at the outer edge of the non-image display area. Therefore, the width of the image non-display area appears narrower in reality to the viewer. In fact, when the power is applied to the display module to output an image, it can be seen that the width of the non-display area of the image is narrower than the actual size, and the size of the image display area is relatively expanded. This optical phenomenon will be described in more detail below with reference to the drawings.

Display device 10 according to an embodiment of the present invention having the above characteristics, the front panel 11 of the transparent material, a display module (not shown) provided on the back of the front panel 11, and the It covers and protects the display module, and includes a back cover 16 which is directly or indirectly coupled to the rear surface of the front panel 11 and a zone 18 for supporting such a module assembly. In addition, a shielding member 12 corresponding to an image non-display area is provided at an edge of the front panel 11. The shielding member 12 is provided to prevent a portion of the edge of the display module from which an image is not output to the outside. The shielding member 12 may be a thin sheet of an opaque material through which light does not penetrate, and in one embodiment, a black film may be applied. In the present invention, a gradation effect is applied to the film for the shielding member, thereby minimizing the boundary between the image display area and the non-display area. In addition, the shielding member 12 may be referred to as a bezel by a person skilled in the art, and as illustrated, has a rectangular band shape that has a predetermined width and surrounds the edge of the front panel.

Hereinafter, the internal structure of the display apparatus will be described in more detail with reference to the accompanying drawings.

4 is an exploded perspective view illustrating an internal configuration of a display device according to an embodiment of the present invention.

Referring to FIG. 4, the display apparatus 10 according to the exemplary embodiment of the present invention includes the front panel 11, the shielding member 12, the display module 13, the back cover 16, and the transparent material as described above. Support 18 is included, these configurations can be identified from the outside.

In addition to these configurations, a module bracket is provided inside the display device 10 to stably fix and support the display module 13 to the rear surface of the front panel 11. In detail, the module bracket includes an upper bracket 14 supporting the upper end of the display module 13 and side brackets 15 supporting both side ends of the display module 13. Although not shown, a separate module bracket may be provided at the lower end of the display module 13. As described above, the display device 10 of the present invention is essentially applied as described above, the function and assembly process of these components will be described in more detail with reference to the drawings below.

Prior to describing the functions and the assembly process of the above components, the principle and function of the above-described light path changing unit will be briefly described.

5 is a view schematically showing the principle of a concave lens.

Referring to FIG. 5, it shows how an image is formed when the object M is placed in front of the concave lens L1.

In detail, the distance from the concave lens L1 to the focus is f, the distance from the concave lens L1 to the target object M is a, and the distance to the image m of the target object M is b. In this case, the focal length formula is as follows.

1 / a + 1 / b = 1 / f

When the object M is placed inside the focal length f, an upright virtual image m of a reduced size is formed at a point between the object M and the concave lens L1. That is, the reduced sized upright virtual image m is perceived by the observer's eye, so that the object M looks smaller than the actual size. For example, the light passing through the upper end of the object M is bent toward the upper side as indicated by the solid line while passing through the concave lens L1. The observer's eye appears to have an optical path indicated by a dotted line in the absence of the concave lens L1.

6 is a view showing the principle of a Fresnel lens (Fresnel Lens) applied to the spirit of the present invention.

Referring to Fig. 6, the Fresnel lens originates from a lens having the same thickness as the convex lens in the first place. In detail, the convex Fresnel lens is made by cutting the upright convex lens into a plurality of segments in the transverse direction (direction parallel to the light passing direction) and horizontally moving these pieces in one plane. Then, the rounded refractive surface of the convex lens formed on each piece is flattened and deformed into a prism shape. As such, when the rounded refractive surface of the convex lens is flattened, chromatic aberration is reduced, and the thickness of the lens itself is reduced.

Using the principle of such convex Fresnel lens, it is possible to make concave Fresnel lens in the same way.

As shown in Fig. 6, the edge portion of the concave lens corresponding to the area l necessary for application to the front panel of the present invention is divided into a plurality of segments. Then, the rounded refractive surface of the concave lens formed in each segment is flattened so that a plurality of prisms are arranged in a line in one plane. Here, the refractive surface of the prism may take the rounded refractive surface of the concave lens as it is. In the present invention, as described above, a plurality of small prisms are arranged in a single plane in a prism array. The refractive surfaces of each prism piece constituting the prism array have different inclination angles. That is, the inclined plane inclination angle of the prism piece becomes larger toward the outside, and the inclined plane inclination angle of the prism piece becomes smaller toward the inside. In this case, the inclination angle means an angle formed by the refracting surface with respect to the vertical plane in the drawing.

According to the above operation, while having the same effect as the concave lens, not only the chromatic aberration generated by the wavelength difference of light is reduced, but also the concave Fresnel lens having a shape thinner than the thickness of the existing concave lens edge.

The concave Fresnel lens having the prism array area as described above has the same principle as a general concave lens. That is, light passing through the prism array region is refracted and diffused out of the lens. In addition, when an object is placed on the left side of the concave Fresnel lens, the observer recognizes an upright virtual image smaller than the size of the actual object. The prism array may be formed at the front edge of the display device, particularly at the outer edge of the non-image display area. Hereinafter, the prism array formed on the front surface of the display device is defined as an optical path changing unit, and it is understood that the prism array and the optical path changing unit may be mixed. On the other hand, the actual path of the light passing through the prism array region will be described in detail with reference to the drawings below.

7 is a partial cross-sectional view showing the configuration of a shielding member defining a front panel and an image non-display area provided on a front surface of a display device according to an exemplary embodiment of the present invention.

Referring to FIG. 7, an optical path changing unit 111 to which a prism array is applied is formed at the front edge of the front panel 11 according to the exemplary embodiment of the present invention. In addition, a shielding member 12 made of an opaque material is provided behind the front panel 11, and the front panel 11 is connected to the image display area Q and the image non-display area by the shielding member 12. Divided into P). That is, the inner space of the shielding member 12 is defined as the image display area Q, and the portion surrounded by the shielding member 12 becomes the image non-display area P. FIG. Here, the meaning of being opaque in the shield member 12 of the opaque material means that the viewer does not recognize the image because the image is not projected to the outside, or an object or part disposed immediately after the shield member 12 It can be understood as a level that blocks the passage of light to the extent that it is not exposed to the outside. In other words, it does not mean that the light does not pass at all.

In addition, the light path changing unit 111 refers to a structure in which light traveling forward from the rear surface of the front panel 11 is refracted in a specific direction. That is, it means any configuration that performs a function of artificially changing the movement path of the light so that the light traveling forward from the rear surface of the front panel 11 is collected in one place or diffused to the outside. In the present invention, the light is diffused to the outside, so that the width of the shield member 12 provided on the rear surface of the front panel is limited to the optical path changing section 111 to be described. As an embodiment of the optical path changing unit 111 performing the function of artificially changing the movement path of the light as described above, a prism array using the principle of the Fresnel lens as described in FIG. 6 may be proposed.

In detail, in the case of a general Fresnel lens, a plurality of concentric protrusions and grooves are formed on the lens surface, but in the present invention, a plurality of protrusions and grooves are formed in a straight line parallel to the edge of the front panel 11. An example will be described.

In more detail, a straight prism array is provided at the edges of the front panel 11, that is, at the top, bottom, left and right edges, in a straight line. The prism array, that is, the width of the light path changing unit 111 may be set differently depending on how much the outer edge of the shield member 12 is to be narrowed.

FIG. 8 is a view illustrating an optical phenomenon appearing on a front panel of a display device having a light path changing unit according to an exemplary embodiment of the present invention.

Referring to FIG. 8, an image of the shield member 12 that is enclosed in the viewer's eye when the shield member 12 is provided at a position spaced from the rear surface of the front panel 11 is described.

In detail, when the concave Fresnel lens is applied, the larger the distance between the object and the lens, the smaller the size of the image formed. Therefore, in the present embodiment, the amount of reduction of the image on the viewer's eyes varies according to the distance k between the shielding member 12 and the front panel 11. That is, as the distance between the shield member 12 and the front panel 11 increases, the size of the image becomes smaller.

The figure shows the path and image of light passing through the upper end of the shielding member 12.

In detail, light spreads in all directions at the upper end of the shield member 12, and light spreading toward the front panel 11 is refracted while passing through the front panel 11. This refraction occurs when the medium passes through another material, that is, air and the front panel 11. In addition, the light passing through the front panel 11 is refracted again in the direction of diffusion while passing through the optical path changing unit 111 in the form of a concave lens. Finally, the virtual image 121 formed on the eyes of the viewer is smaller than the actual size of the shield member 12. As shown, the viewer's eye is perceived to be located at the point where the top of the shield member 12 is lowered downward. The part indicated by the thick arrow is representative of the light reaching the viewer's eyes, and the virtual image 121 is formed at the point where the arrow crosses. The virtual image 121 is formed between the shielding member 12 and the front panel 11.

Since the thickness t of the front panel 11 is a fixed value, the position of the upper end of the virtual image 121 is determined according to the distance k between the shielding member 12 and the front panel 11. That is, as the shielding member 12 moves away from the front panel 11, the upper end of the virtual image 121 is further lowered downward. As a result, the width of the non-image display area P as a whole becomes narrower than it actually is. As a result, an optical illusion occurs that the area of the image display area Q is relatively large.

In this embodiment, since the light path changing portion 111 is formed only on the outer edge portion of the shield member 12, the outer edge portion of the shield member 12 is moved to the viewer in the center direction of the display apparatus 10. Will be recognized. This phenomenon will be clearly understood from FIG.

FIG. 9 is an exploded perspective view of the rear side of the display device according to an exemplary embodiment of the present invention, and FIG. 10 is an enlarged view illustrating a rear edge portion of the display device.

9 and 10, the display apparatus 10 according to the exemplary embodiment of the present invention may include the front panel 11, the shielding member 12, and the display module 13 made of a transparent material, as described in the previous drawings. ), Module brackets 14 and 15 and back cover 16. The left and right edges and the upper edge portions of the front panel 11 are bent backwards to form side surfaces of the display apparatus 10. In addition, a plurality of hook members 17 are provided at both side edges of the rear surface of the display module 13. The function of the hook member 17 will be described in detail below with reference to the drawings.

Meanwhile, the upper bracket 14 supporting the upper edge of the display module 13 among the module brackets 14 and 15 has the following structure. That is, the upper bracket 14 is bent at one end of the upper support 141 and the upper support 141 which is in contact with the upper surface of the display module 13 to the upper edge of the front portion of the display module 13. The front support part 142 is in close contact with the rear support part 143 extending in the same direction as the front support part 142 at a point spaced apart from the other end of the upper support part 141 by a predetermined distance. The back support 143 is in close contact with the upper edge of the back of the display module 13. In other words, an upper end of the display module 13 is inserted between the front support part 142 and the rear support part 143.

In addition, the side bracket 15 of the module brackets 14 and 15 may be bent from one end of the side support part 151 supporting the side surface of the display module 13 and one end of the side support part 151. And a front support 152 in close contact with the front side lateral edge of (13). The side brackets 15 are provided on the left and right sides of the display module 13, respectively.

Referring to the assembly process of the display device constituting such a configuration, first, the front panel 11 is turned over so that the front portion is in close contact with the floor. Here, the shielding member 12 is bonded to the rear edge portion of the front panel 11. In this state, the upper bracket 14 and the side bracket 15 are attached to the rear surface of the shield member 12. In addition, the display module 13 is placed between the upper bracket 14 and the side bracket 15. At this time, the upper surface of the display module 15 is placed in a position spaced downward from the end of the back support 143. Then, both side edge regions of the front surface of the display module 13 are seated on the front support portion 152 of the side bracket 15. In this state, the display module 13 is pushed up toward the upper bracket 14. Then, the upper end of the display module 13 is inserted between the front support part 142 and the rear support part 143 of the upper bracket 15. When this process is completed, the display member 13 is firmly adhered to the side bracket 15 by using the hook member 17, which will be described with reference to the accompanying drawings. .

FIG. 11 is a cross-sectional view taken along line II ′ of FIG. 2, and is a cross-sectional view illustrating an internal configuration of a display device according to an exemplary embodiment of the present invention.

Referring to FIG. 11, the light path changing unit 111 is formed at the front edge of the front panel 11. The light path changing unit 111 is surrounded by a rectangular band shape at the edge of the front panel 11. And it is adhere | attached on the back surface of the said front panel 11 by the transparent adhesive agent 30. FIG. The outer edge of the optical path changing unit 111 is formed on the same plane as the inner edge of the bent portion of the front panel 11, and the inner edge is spaced apart from the inner edge of the shielding member 12. Is formed at the point. That is, the width of the optical path changing unit 111 is formed smaller than the width of the shielding member 12. Accordingly, the outer edge of the shield member 12 is moved toward the center of the front panel 11 by the light path changing portion 111, so that the outer edge of the shield member 12 appears smaller than the actual width of the shield member 12.

In addition, the shielding member 12 extends to the boundary between the image non-display area P and the image display area Q. FIG. In addition, the shielding member 12 is coated in black, and a gradation printing is made in which the color becomes darker from the inner edge to the outer edge. Therefore, when the display apparatus 10 is turned off, the boundary between the image non-display area P and the image display area Q is not clearly distinguished by the shielding member 12.

In addition, the module brackets 14 and 15 are attached to be spaced apart from the inner side of the bent portion of the front panel 11 by a predetermined distance G, and are disposed on the rear surface of the shield member 12 by a transparent adhesive 30. Are glued. The outer circumferential surfaces of the module brackets 14 and 15 are anodized to black. The module brackets 14 and 15 may be formed of a metal material such as aluminum, and are processed in black so that the internal structure of the display device 10 is not exposed.

Here, the reason why the module brackets 14 and 15 are coupled to be spaced apart from the bent portion of the front panel 11 is as follows.

If the module brackets 14 and 15 that have been anodized to black are in close contact with the bent portions of the front panel 11, the front edge of the front panel 11 may be black due to light scattering. Band-shaped virtual images can form. Since the front panel 11 is a transparent material through which light can pass, the light passing through the bent portion of the front panel 11, that is, the light moving toward the side of the display device 10 is transferred to the module. It hits the brackets 14 and 15 to cause scattering. The module brackets 14 and 15 are spaced apart from the bent portion of the front panel 11 in order to prevent black bands from being formed on the front edge of the front panel 11 due to light scattering. To be attached in position.

As such, when the module brackets 14 and 15 are assembled to be spaced apart from the bent portion of the front panel 11, the front edge portion of the display apparatus 10 has a transparent area having a predetermined width.

12 is a partial perspective view illustrating a state in which a display module constituting a display device according to an exemplary embodiment of the present invention is coupled to a module bracket.

Referring to FIG. 12, as mentioned above, a plurality of hook members 17 are coupled to left and right edges of the rear surface of the display module 13. The plurality of hook members 17 are spaced apart from each other by a predetermined interval and are rotatably provided at one end.

In detail, the hook member 17 has an approximately I shape, is defined at one end of the body 171, the body 171, and a proximal end 172 having a rotation hole 174 formed therein. And a distal end defined at the other end of the body 172 and having a fastening hole 175 formed therein.

In addition, the side bracket 14 is formed with a slot 143 for inserting a portion of the proximal end 172 and the distal end 173. In detail, the rotation hole 174 and the fastening hole 175 are formed at positions biased to the edges of the proximal end 172 and the distal end 173, respectively. In addition, opposite ends of the ends adjacent to the rotation hole 174 and the fastening hole 175 are inserted into the slot 143.

In addition, the rivet L is inserted into the rotation hole 174. That is, the hook member 17 is rotatably coupled to the rear surface of the display module 13 by riveting coupling. In the state where the proximal end 172 and the distal end 173 are inserted into the slot 143, respectively, a fastening member S such as a screw penetrates the fastening hole 175 and the display module 13. ) Is inserted. Then, the display module 13 does not swing while being fitted to the module brackets 14 and 15.

When the assembly process of the display module 13 is arranged, first, the display module 13 is placed in a space formed by the module brackets 14 and 15. When the display module 13 is pushed up, the upper edge of the display module 13 is fitted to the upper bracket 15. In this case, the hook member 17 is coupled to the rear surface of the display module 13. In this state, the hook member 17 is rotated so that the proximal end 172 and the distal end 173 are respectively inserted into the slot 143 formed in the side bracket 14. When the fastening member S is inserted into the fastening hole 175, the assembly of the display module 13 is completed. Thereafter, the back cover 16 may be coupled. Although not shown, the back cover 16 may be fixed to the display module 13. For example, a boss of a predetermined length may protrude from the rear surface of the display module 13, and a fastening hole may be formed on a surface of the back cover 16 that contacts the end of the boss. In addition, a fastening member such as a screw may be inserted into the boss through the fastening hole.

FIG. 13 is a cross-sectional view taken along line II-II 'of FIG. 12, and FIG. 14 is a cross-sectional view taken along line III-III' of FIG. 12.

Referring to FIG. 13, the hook member 17 rotates about the rotation hole 174 to show a part of the proximal end 172 inserted into the slot 143.

Referring to FIG. 14, a part of the distal end 173 is inserted into the slot 143 by the rotation of the hook member 17.

1 is a front perspective view when power is not applied to a display device according to an embodiment of the present invention.

2 is a front perspective view when power is applied to the display device.

3 is a rear perspective view of the display device.

Figure 4 is an exploded perspective view showing the internal configuration of a display device according to an embodiment of the present invention.

5 shows schematically the principle of a concave lens;

6 is a view showing the principle of a Fresnel lens (Fresnel Lens) applied to the idea of the present invention.

7 is a partial cross-sectional view showing a configuration of a shielding member defining a front panel and an image non-display area provided on a front surface of a display device according to an exemplary embodiment of the present invention.

8 is a view showing an optical phenomenon appearing on the front panel of the display device with a light path changing unit according to an embodiment of the present invention.

9 is an exploded perspective view of the rear side of the display device according to the embodiment of the present invention;

10 is an enlarged view illustrating a rear corner portion of the display device.

FIG. 11 is a longitudinal cross-sectional view taken along line II ′ of FIG. 2, and is a cross-sectional view illustrating an internal configuration of a display device according to an embodiment of the present invention. FIG.

12 is a partial perspective view showing a display module constituting a display device according to an embodiment of the present invention coupled to a module bracket.

FIG. 13 is a cross-sectional view taken along the line II-II 'of FIG. 12; FIG.

FIG. 14 is a cross sectional view taken along line III-III ′ of FIG. 12;

Claims (13)

A display module for outputting an image; A front panel coupled to the front of the display module and having a light path changing unit configured to change a movement path of light in an edge region; A module bracket attached to a rear surface of the front panel and supporting the display module; A shielding member provided on the front surface of the module bracket to define an image non-display area; A hook member rotatably provided on a rear surface of the display module and selectively coupled to the module bracket; and And a back cover coupled to a rear surface of the display module to protect the display module. The method of claim 1, The optical path changing unit is a display device, characterized in that the concave lens-shaped prism array to form a reduced image virtual image. The method of claim 1, The shielding member is a display device, characterized in that the film is surrounded by a rectangular band on the edge of the front panel, a thin sheet (gradient) printed so that the color becomes darker from the inner edge to the outer edge. The method of claim 1, The module bracket is an anodized aluminum plate, characterized in that the display device. The method of claim 1, And the module bracket is attached to the rear surface of the shielding member. The method of claim 1, The upper and left and right edges of the front panel are bent backwards. The method of claim 6, And the module bracket is mounted at a point spaced apart from the bent portion of the front panel. The method of claim 1, The module bracket, An upper bracket supporting an upper edge of the display module; And a pair of side brackets supporting left and right edges of the display module. The method of claim 8, The upper bracket, A front support part in close contact with a rear surface of the front panel and on which the display module is mounted; An upper surface support part which is bent backward from the front support part and adheres to an upper surface of the display module; And a back support extending from the top support in the same direction as the front support to support a rear edge of the display module. The method of claim 9, And the front support and the rear support are spaced apart by a thickness corresponding to the thickness of the display module. The method of claim 8, The side bracket, A front support part in close contact with a rear surface of the front panel and on which the display module is mounted; A side support part bent backward from the front support part to be in close contact with the side of the display module; And a slot into which the part of the hook member is inserted in the side support part. The method of claim 11, The hook member, Body, A proximal end extending in a direction crossing the body at one end of the body, A distal end extending in a direction crossing the body at the other end of the body, And a portion of the proximal end and the distal end is inserted into the slot. 13. The method of claim 12, The proximal end is formed with a rotation hole which becomes the rotation center of the hook member, The distal end is formed with a fastening hole for the fastening member is inserted, And each of the rotation hole and the fastening hole is formed at a point close to opposite ends of the ends of the proximal end and the distal end inserted into the slot.

Images