KR101529656B1 - Liquid crystal display device - Google Patents

Abstract

A liquid crystal display device is disclosed.

The liquid crystal display device according to the present invention can prevent the bottom cover from being bent by an external force by forming a support on the side part of the bottom cover and can reinforce the rigidity of the liquid crystal display module housed in the bottom cover.

Bottom cover, support, rigidity improvement

Description

[0001] Liquid crystal display device [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device, and more particularly, to a liquid crystal display device capable of preventing bending due to external force and improving rigidity.

In recent years, as the society has become a full-fledged information age, the display field that visually expresses electrical information signals has been rapidly developed. Various flat panel display devices having excellent performance such as thinning, light weighting and low power consumption have been developed, It is replacing the CRT quickly.

Specific examples of the flat panel display include a liquid crystal display (LCD), a plasma display panel (PDP), a field emission display (FED), an electroluminescent display luminescence display device (ELD). These flat display panels, which commonly implement images, are indispensable components. The flat display panel has a flat display module having a unique light emitting means or a pair of transparent insulating substrates, .

In recent years, an active matrix type in which pixels, which are basic units of image display, are formed in a liquid crystal panel of the flat panel display panel in a matrix manner and then independently controlled using a switching element such as a thin film transistor (TFT) It is widely used because of its excellent video rendering capability and color reproducibility. The liquid crystal panel is mounted in a separate system in a modularized state through various mechanical means, and is used as a display for a computer monitor, a display screen of a portable information processing apparatus such as a notebook computer, a laptop computer, and a TV. The system refers to a part or whole of a display product on which a liquid crystal display module is mounted, and includes, for example, a case in which a display surface of a liquid crystal display module is opened while a remaining part of the liquid crystal display module is wrapped .

A liquid crystal display module including the liquid crystal panel, a backlight unit including a liquid crystal panel for displaying an image, a light source for generating light, various optical sheets for irradiating light generated by the light source to the liquid crystal panel, and a light guide plate, A support main body for supporting the liquid crystal panel, and a bottom cover for housing and enclosing the liquid crystal panel and the backlight unit.

In the case of the bottom cover, the bottom cover may include a receiving portion for receiving the liquid crystal panel and the backlight unit, and a bending portion extending from the receiving portion to surround the side surfaces of the liquid crystal panel and the backlight unit.

A bending part of the bottom cover may be cut and exposed in order to avoid interference with a separate case mounted on the liquid crystal display module. In this case, if the rigidity of the bottom cover is constant Is weaker than when the part is not cut.

In addition, since the bending portion of the bottom cover is partially exposed, the liquid crystal panel and the backlight unit wrapped around the bottom case may be deflected due to external force.

An object of the present invention is to provide a liquid crystal display device capable of preventing flexing by an external force and improving rigidity.

A liquid crystal display device according to an embodiment of the present invention includes a liquid crystal panel for displaying an image, a backlight unit for providing light to the liquid crystal panel, a storage unit for storing the liquid crystal panel and the backlight unit, And a bottom cover having a liquid crystal panel and a bending portion that surrounds a side portion of the backlight unit, wherein a bending portion of the bottom cover includes a concave and convex portion formed of a concave portion and a convex portion, And a support extending from the end.

The present invention can prevent the bottom cover from being bent by an external force and improve the rigidity of the side cover of the bottom cover by forming a support on a portion of the bottom cover that surrounds the liquid crystal panel and the backlight unit, .

Hereinafter, embodiments according to the present invention will be described with reference to the accompanying drawings.

1 is a cross-sectional view of a part of a liquid crystal display device according to the present invention.

1, a liquid crystal display device according to the present invention includes a liquid crystal panel 102 for displaying an image, a backlight unit 110 for emitting light to the liquid crystal panel 102, a backlight unit A support side 120 supporting the liquid crystal panel 102 and supporting side surfaces of the liquid crystal panel 102 and the optical sheets 112, A bottom cover 126 for accommodating the liquid crystal panel 102 and the backlight unit 110 and enclosing the side of the support side 120 and a liquid crystal panel And a top case 124 that surrounds the edges of the upper case 102.

The liquid crystal panel 102 includes a pair of first and second substrates which are bonded to each other with a liquid crystal layer interposed therebetween. A plurality of gate lines and a plurality of data lines intersecting the first substrate to define a pixel region, and a thin film transistor (TFT) is provided at each intersection of the pixel regions to form a one-to-one correspondence with the pixel electrodes Respectively. The second substrate includes color filters of R, G, and B colors corresponding to the pixel regions, and a black matrix for covering the edges, the gate lines, the data lines, and the thin film transistors.

A liquid crystal panel driving unit is connected to at least one side edge of the liquid crystal panel 102 via a flexible circuit board. The liquid crystal panel driving unit includes a gate driver for scanning on / off signals of the thin film transistors to a plurality of gate lines, and a data driver for transferring image signals for each frame to a plurality of data lines.

A backlight unit 110 for providing light to the liquid crystal panel 102 includes a lamp 114 disposed at one side for emitting light and an optical sheet 112 for diffusing and condensing light generated from the lamp 114 ).

The backlight unit 110 is provided with a printed circuit board 116 on which a driving unit for driving the lamp 114 is mounted and a connection unit 118 for electrically connecting the lamp 114 and the printed circuit board 116, As shown in FIG.

The optical sheets 112 of the backlight unit 110 are supported by the support side 120. The support side 120 includes a support hole for supporting the optical sheets 112 and a through hole for fastening an external case (for example, a TV case) with a fastening hole of a bottom cover 120 do.

The guide panel 122 is disposed on the support side 120 and supports the liquid crystal panel 102 and surrounds the edges of the liquid crystal panel 102. The guide panel 122 includes a through hole that is fastened with an outer case and a screw together with a fastening hole of the bottom cover 120 and a through hole of the support side 120, like the support side 120.

The backlight unit 110 supported by the support side 120 and the liquid crystal panel 102 supported by the guide panel 122 are accommodated in the bottom cover 126.

3, the bottom cover 126 includes a receiving portion 129 for receiving the backlight unit 110 and the liquid crystal panel 102, and a receiving portion 129 extending from the receiving portion 129, And a bending portion 127 surrounding the support side 120 and side surfaces of the guide panel 122.

The receiving portion 129 of the bottom cover 126 includes a fastening portion 134 formed with a fastening hole H to be fastened to the outer case through a screw.

The bending part 127 of the bottom cover 126 is composed of concave and convex parts constituted by the concave part 132 and the first and second convex parts 130a and 130b adjacent to the concave part 132. [ The bending portion 127 of the bottom cover 126 further includes a support portion 128 extending from both ends of the first and second convex portions 130a and 130b.

The support part 128 is connected to a certain part of the ends of the first and second convex parts 130a and 130b and is curved outwardly. The support portion 128 may be curved inward of the receiving portion 129. The support portion 128 is formed on the bending portion 127 corresponding to a portion where the fastening portion 134 of the receiving portion 129 is formed.

The bending part 127 of the bottom cover 126 is made of irregularities in order to minimize interference when fastened to an outer case (for example, a TV case).

As the bending portion 127 is formed of concave and convex portions, the first and second convex portions 130a and 130b adjacent to the concave portion 132 may be bent by an external force. To prevent this, And a support portion 128 extending from the first and second convex portions 130a and 130b is formed on the bending portion 127. [

That is, the support part 128 reinforces the rigidity of the bending part 127 of the bottom cover 126 to prevent the bending part 127 made of the uneven part from being bent by an external force. The shape of the support part 128 can be changed into various shapes within a range in which bending of the bending part 127 can be minimized.

The support part 128 is formed on the bending part 127 so that the liquid crystal panel 102 wrapped by the bending part 127 due to an external pressure such as a movement during transportation, And the backlight unit 112 can be minimized.

FIG. 2 is a view showing a state in which the bottom cover, the support side, and the backlight unit of FIG. 1 are engaged.

1 and 2, the bottom cover 126 includes side portions of a support side 120 disposed on a lamp (114 in FIG. 1) that generates light and that supports the optical sheets 112 Wrap. Specifically, a side portion of the support side 120 is surrounded by a bending portion 127 of the bottom cover 126. The through hole 121 of the support side 120 of the arch shape is disposed so as to correspond to the fastening hole H of the bottom cover 126.

The support portion 128 may be formed at the bending portion 127 of the bottom cover 126 so that the rigidity of the bending portion 127 may be improved.

FIG. 4A is experimental data showing the degree of bending by applying an external force to a conventional liquid crystal display device, and FIG. 4B is experimental data showing the degree of bending by applying an external force to the liquid crystal display device according to the present invention.

As shown in FIG. 4, when a mini external force is applied to a conventional liquid crystal display device, the conventional liquid crystal display device is bent by about 0.16634, and a minimum external force is applied to the liquid crystal display device according to the present invention The liquid crystal display according to the present invention is bent by approximately 0.17047. When a minimum external force is applied, the conventional liquid crystal display device is less warped than the liquid crystal display device of the present invention.

The more the external force is applied to each of the conventional liquid crystal display device and the liquid crystal display device according to the present invention than the minimum, the degree of warping of the liquid crystal display device according to the present invention becomes less than that of the conventional liquid crystal display device.

As can be seen from these experimental data, the liquid crystal display according to the present invention has a structure in which the support portion 128 is formed in the bending portion 127 of the bottom cover 126, and the stiffness of the bending portion 127, Can be improved. As the rigidity of the bending portion 127 of the bottom cover 126 is improved, the liquid crystal panel 102 and the backlight unit 102, which are wrapped by the bending portion 127 of the bottom cover 126, The defects can be minimized.

1 is a cross-sectional view of a part of a liquid crystal display device according to the present invention.

Fig. 2 is a view showing a state in which the bottom cover, the support side, and the backlight unit of Fig. 1 are fastened. Fig.

3 is an enlarged view of a portion of the bottom cover of Fig.

FIG. 4A is experimental data showing the degree of bending by applying an external force to a conventional liquid crystal display device, and FIG. 4B is experimental data showing the degree of bending by applying an external force to the liquid crystal display device according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

102: liquid crystal panel 110: backlight unit

112: optical sheets 114: lamp

116: printed circuit board 118: connection

120: support side 121: through hole

122: guide panel 124: top case

126: bottom cover 127: bending part:

128: Support part 129:

130a: first convex portion 130b: second convex portion

132: concave portion 134:

Claims (6)

A liquid crystal panel for displaying an image; A backlight unit for providing light to the liquid crystal panel; And And a bottom cover extending vertically from the receiving part to surround the liquid crystal panel and the side surface of the backlight unit, Wherein a bending portion of the bottom cover has a concave portion in which a part of the bending portion is removed to the receiving portion and a convex portion disposed on both sides with the concave portion interposed therebetween, Comprising a connected support, And the fastening portion having the fastening hole is located in the receiving portion of the concave portion. The method according to claim 1, Wherein the supporting portion and the coupling portion are separated from each other by a predetermined distance. delete delete The method according to claim 1, Wherein the supporting portion is curved toward the outer periphery of the bending portion. The method according to claim 1, Wherein the supporting portion is curved toward the receiving portion.

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