KR101165869B1 - Liquid crystal module - Google Patents

Abstract

A liquid crystal module according to the present invention includes: a liquid crystal panel; A supporter main body for supporting / fixing the liquid crystal panel; A lamp that emits light; Optical sheets provided on the lamp; And a drawing unit for receiving the lamp and the optical sheets and having a drawing unit.

Here, the drawing unit is characterized in that the bottom case has a curved edge.

Accordingly, in the present invention, since the structure of the bottom case is modified to prevent the bottom case from being distorted and the structure and the reinforcing agent are not needed, the process of installing the reinforcing agent or the structure is not required and the material cost is reduced. Further, by preventing the bottom case from being warped, the reflection efficiency on the bottom surface of the bottom case increases, thereby eliminating the luminance degradation and realizing a bright screen.

Description

Liquid crystal module

1 is a cross-sectional view of a conventional liquid crystal module of a direct-type backlight;

2 is a plan view of a bottom cover having a conventional projection;

3 is a plan view of a bottom cover with a conventional reinforcing agent;

4 is a sectional view of a liquid crystal module having a backlight unit according to the present invention.

5 is a perspective view of a bottom case according to the present invention;

6 is an enlarged view of area A in Fig. 5; Fig.

Description of the Related Art

  1: liquid crystal module 5: backlight unit

 20: lamp 30: diffusion plate

 40: optical sheets 50: supporter main

 60: liquid crystal panel 70: top case

100: bottom case 110:

150: Support

The present invention relates to a liquid crystal module, and more particularly, to a liquid crystal module that prevents distortion of a bottom cover by drawing on a bottom cover, and does not use a separate structure, thereby reducing material cost and airflow.

A liquid crystal display typically comprises a liquid crystal panel in which a liquid crystal is sandwiched between a substrate and a substrate, a drive circuit for driving the liquid crystal panel, a driving circuit having various circuit elements, and a backlight for irradiating light from the backside.

The light source used in the liquid crystal display device must satisfy uniformity and high brightness even in a large area. However, when the light source is used as the point light source or the linear light source, luminance concentration occurs around the light source, It is very difficult to obtain high luminance and luminance uniformity in a state where the linear light source or the point light source is directly disposed under the display.

In order to satisfy the uniform brightness and high brightness conditions required in a liquid crystal display device as described above, a backlight unit that improves the brightness and uniformity of light is required.

Since most of such liquid crystal display devices are light receiving devices that display an image by adjusting the amount of light coming from the outside, a separate light source for illuminating the LCD panel, that is, a backlight assembly is indispensable, Depending on the installation position of the unit, it is divided into edge method and direct method.

In the edge type, a lamp unit is installed on a side surface of a light guide plate for guiding light. The edge unit includes a lamp that emits light, a lamp holder that is inserted at both ends of the lamp to protect the lamp, To the light guide plate.

Such an edge-type backlight assembly is applied to a liquid crystal display device of relatively small size such as a monitor of a laptop-type computer and a desktop-type computer. The backlight assembly has good uniformity of light and a long service life, It is advantageous.

Meanwhile, in the direct-type method, which is mainly developed as the size of the liquid crystal display device begins to be enlarged, a plurality of lamps are disposed on the lower surface of the diffusion plate to directly illuminate the entire surface of the LCD panel.

Such a direct-type backlight assembly is mainly used for a large-screen liquid crystal display device requiring high brightness because it has a higher light utilization efficiency than an edge type.

1 is a cross-sectional view showing a conventional liquid crystal module of a direct-type backlight.

1, the liquid crystal module includes a liquid crystal panel 560; A plurality of frames 550 and 570 for supporting / protecting the liquid crystal panel 560; And a backlight unit 505 disposed on the back surface of the liquid crystal panel 560.

The liquid crystal panel 560 is provided under the top case 570. The top case 570 is a frame which is formed by holding the edge of the liquid crystal panel 560.

Here, the liquid crystal panel 560 is supported by the supporter main body 550. In the liquid crystal panel 560, liquid crystal is disposed between the two substrates, a color filter is formed on the upper substrate, and a switching device capable of driving the liquid crystal is provided on the lower substrate.

And, the backlight unit 505 includes a lamp 520; A diffusion plate 530; A plurality of optical sheets 540, a lamp 520 and a diffusion plate 540 for increasing the efficiency of light emitted from the lamp 520 are provided with a bottom cover 600 accommodated in the inner space.

The backlight unit 505 uses the lamp 520 as the light source and the light emitted by the lamp 520 passes through the diffusion plate 530 and the optical sheets 540 and is projected toward the screen display portion of the liquid crystal element do.

The lamp 520 is provided with a direct type in which a plurality of lamps are arranged.

The bottom cover 600 is made of a material such as metal which is thin and has excellent light reflectance so that it is reentered from the lamp 520 to improve the brightness again. The bottom cover 600 reflects light not proceeding to the display portion of the screen, Play a role

The optical sheets 540 serve to scatter the light once again before the light is incident on the liquid crystal panel 560, that is, to make the brightness of the light uniform again.

Recently, in order to realize the above-described size of the liquid crystal panel 560 and the backlight unit 505, the side and bottom surfaces of the bottom cover 600 are made thinner to implement the liquid crystal panel 600 and the backlight unit 505 It must be made very thin to be thin enough to support barely.

The thickness of the bottom cover 600 directly affects the size of the liquid crystal module 501. Accordingly, as the screen becomes larger, the bottom cover 600 is thinner than the area, and thus the bottom cover is distorted even with a small impact.

Further, in order to increase the thickness of the bottom cover 600, it is very difficult to manufacture a thin display device. Therefore, the bottom cover 600 is prevented from being twisted by a structure in which the reinforcement or the projection is folded into the bottom cover 600.

FIG. 2 is a plan view of a bottom cover having a conventional protrusion, and FIG. 3 is a plan view of a bottom cover having a conventional reinforcing agent.

The bottom cover 600 has a top surface opened and a space in which the components of the backlight unit 505 described above are accommodated. The bottom cover 600 includes four side walls having a predetermined height And has one bottom surface connected to four side walls.

2, the bottom cover 600 includes a support portion 650 for supporting / fixing the optical sheets 540. Further, the bottom surface of the bottom cover 600 is made of a material having a good reflectivity that can reflect the light emitted from the lamp 520.

The bottom cover 600 is provided with a protrusion 610 on the bottom surface and the protrusion of the protrusion 610 is folded over to connect the liquid crystal module 501. In addition, ). The structure in which the projections of the protrusions 610 are folded over is inexpensive because no separate structure or reinforcing agent is attached.

However, the effect of preventing the bottom cover 600 from being warped is insignificant.

3, the bottom cover 600 includes a support portion 650 for supporting / fixing the optical sheets 540. Further, the bottom surface of the bottom cover 600 is made of a material having a good reflectivity that can reflect the light emitted from the lamp 520.

A reinforcing agent 620 is provided on the bottom surface of the bottom cover 600 to prevent the bottom cover 600 from being distorted during the operation of assembling the liquid crystal module 501 or during a user test.

However, since the reinforcing agent is attached and fixed to prevent the bottom cover 600 from being warped, the material cost increases and the number of work processes increases.

As the liquid crystal module 501 is gradually increased in size, the thickness of the bottom cover 600 is increased compared with the area of the bottom cover 600. Therefore, the bottom cover 600, which may occur due to shocks, A distortion of the display panel 600 occurs.

Since the bottom surface of the bottom cover 600 reflects the light emitted from the lamp 520, the reflection of the light is reduced and the brightness of the display screen is lowered, .

An object of the present invention is to provide a liquid crystal module capable of preventing distortion of the bottom cover and changing the shape of the bottom cover in a backlight unit of a liquid crystal module, thereby forming a screen of uniform brightness.

According to an aspect of the present invention, there is provided a liquid crystal module including:

A liquid crystal panel;

A supporter main body for supporting / fixing the liquid crystal panel;

A lamp that emits light;

Optical sheets provided on the lamp;

And a drawing unit for receiving the lamp and the optical sheets and having a drawing unit.

Here, the drawing unit is characterized in that the bottom case has a curved edge.

According to another aspect of the present invention, there is provided a backlight unit comprising:

A lamp that emits light;

Optical sheets provided on the lamp;

The bottom case for accommodating the lamp and the optical sheets includes a drawing unit having a drawing unit.

Here, the bottom portion of the drawing unit may have a curved edge, and the bottom case may further include a supporting portion for supporting the optical sheets.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings, . ≪ / RTI >

4 is a cross-sectional view of a liquid crystal module having a backlight unit according to the present invention.

4, the liquid crystal module 1 includes a liquid crystal panel 60, a plurality of frames 50 and 70 for supporting / protecting the liquid crystal panel 60, And a backlight unit (5).

The liquid crystal panel 60 is disposed under the top case 70. The top case 70 is a frame that surrounds the edges of the liquid crystal panel 60 and is formed to be hugged.

Here, the liquid crystal panel 60 is supported by the supporter main 50. In the liquid crystal panel 60, a liquid crystal is disposed between the two substrates, a color filter is formed on the upper substrate, and a switching device capable of driving the liquid crystal is provided on the lower substrate.

The backlight unit 5 includes a lamp 20, a diffusion plate 30, a plurality of optical sheets 40 for increasing the efficiency of light emitted from the lamp 20, a lamp 20, The plate 40 and the optical sheets 40 are provided with a bottom case 100 housed in an inner space.

The backlight unit 5 uses the lamp 20 as a light source and the light emitted by the lamp 20 passes through the diffusion plate 30 and the optical sheets 40 and is projected toward the screen display portion of the liquid crystal element do.

The lamp (20) is provided with a direct type in which a plurality of lamps are arranged.

The bottom case 100 is made of a material such as metal which is thin and has a high light reflectance so that it is re-incident on the lamp 20 to improve the brightness again. The bottom case 100 reflects light not proceeding to the display portion of the screen, It plays a role.

The bottom case 100 is characterized in that it is provided with a drawing portion 110 (see Fig. 5) in the form of a container with a bottom. 5). The drawing portion (110 in FIG. 5) is characterized in that the edge of the bottom case 100 is a curved surface. The bottom case 100 is described in detail in FIG.

The optical sheets 40 scatter light again before the light is incident on the liquid crystal panel 60, that is, serve to make the brightness of the light uniform again.

5 is a perspective view of a bottom case according to the present invention.

As shown in FIG. 5, the bottom case 100 is characterized by having a drawing unit 110 in the shape of a bottomed container. The drawing unit 110 is characterized in that the bottom case 100 has a curved edge.

5, the bottom case 100 is provided with a drawing part 110, a supporting part 150 for supporting the optical sheets 40 and the diffusion plate 30.

The support portion is provided with a diffusion plate and a screw fastening portion for supporting and fixing the optical sheets. Therefore, the bottom case is warped due to impact to the bottom case by screw fastening or user test.

Here, the phenomenon that the bottom case 100 is warped is enlarged, and the bottom case 100 is also becoming larger. As a result, the bottom case 100 has a large area, whereas the bottom case 100 has a small thickness.

Thus, the bottom case 100 is provided with a draw-out portion 110 for preventing warpage.

6 is an enlarged view of area A in Fig.

As shown in FIG. 6, the bottom case 100 is characterized by having a drawing unit 110 in the shape of a bottomed container. The drawing unit 110 is characterized in that the bottom case 100 has a curved edge.

The drawing unit 110 is provided in a bottomed container shape and the drawing force is increased by the drawing unit 110 so that the bottom unit case 100 is not warped or impacted.

Further, since the drawing portion 110 does not have any other reinforcing agent or attachment of the structure, the material cost is reduced. In addition, since there is no step of providing other attachments or reinforcing agents, it is possible to reduce the airflow and it is easy to manufacture because a drawwing portion can be formed through a press with a drawing die or the like.

The bottom case 100 may be provided with a bottomed container draw-down portion 110 to prevent the bottom case 100 from being twisted due to the impact applied to the bottom case 100, Since the attraction force of the bottom case 100 is increased without attaching the reinforcing agent, it is not necessary to reduce the material cost and attach the attachment.

Therefore, the liquid crystal module 1 of the present invention can prevent the bottom case 100 from being distorted by changing the structure of the bottom case 100 into a bottomed container shape, and prevent the distortion of the bottom case 100, This eliminates the need for a process and reduces material costs because no structures and reinforcing agents are needed. Also, by preventing the bottom case 100 from being warped, the reflection efficiency on the bottom surface of the bottom case 100 can be increased, thereby reducing the brightness degradation and realizing a bright screen.

As described above, the liquid crystal module of the present invention can prevent the bottom case from being warped by changing the structure of the bottom case to a bottomed container shape, and it is unnecessary to install a reinforcing agent or a structure by the absence of water or structure In addition, since the structure and the reinforcing agent are not necessary, the material cost is reduced. Further, by preventing the bottom case from being warped, the reflection efficiency on the bottom surface of the bottom case increases, thereby eliminating the luminance degradation and realizing a bright screen.

Those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims (6)

A liquid crystal panel; A supporter main body for supporting / fixing the liquid crystal panel; A lamp that emits light; Optical sheets provided on the lamp; And a bottom case for accommodating the lamp and the optical sheets, The bottom case includes first and second side surfaces facing each other in a first direction, a support portion bent perpendicularly from the first and second side surfaces to support the optical sheets, and a support portion extending from the first and second side surfaces And third and fourth sides facing each other in a second direction perpendicular to the first direction, wherein the third and fourth sides have lower heights than the first and second sides, Wherein a drawing portion is formed at an edge defined by a boundary region of four sides of the liquid crystal module. delete delete A lamp that emits light; Optical sheets provided on the lamp; And a bottom case for accommodating the lamp and the optical sheets, The bottom case includes first and second side surfaces facing each other in a first direction, a support portion bent perpendicularly from the first and second side surfaces to support the optical sheets, and a support portion extending from the first and second side surfaces And third and fourth sides facing each other in a second direction perpendicular to the first direction, wherein the third and fourth sides have lower heights than the first and second sides, Wherein a drawing portion is formed at an edge defined by a boundary region of four sides of the backlight unit. delete delete

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