KR101773440B1 - Slim type display apparatus - Google Patents

Slim type display apparatus Download PDF

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Publication number
KR101773440B1
KR101773440B1 KR1020160010582A KR20160010582A KR101773440B1 KR 101773440 B1 KR101773440 B1 KR 101773440B1 KR 1020160010582 A KR1020160010582 A KR 1020160010582A KR 20160010582 A KR20160010582 A KR 20160010582A KR 101773440 B1 KR101773440 B1 KR 101773440B1
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KR
South Korea
Prior art keywords
metal sheet
display device
back cover
guide plate
edge
Prior art date
Application number
KR1020160010582A
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Korean (ko)
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KR20170090544A (en
Inventor
정시영
Original Assignee
희성전자 주식회사
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Priority to KR1020160010582A priority Critical patent/KR101773440B1/en
Publication of KR20170090544A publication Critical patent/KR20170090544A/en
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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133524—Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • G02F2001/133325—
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2202/00—Materials and properties
    • G02F2202/28—Adhesive materials or arrangements

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)

Abstract

The present invention relates to a display device having a structure capable of eliminating a middle cabinet and a heat sink constituting a display device to reduce the manufacturing cost while being slim and lightweight,
According to an aspect of the present invention, there is provided a display device including: an inner side surface, a horizontal surface, and an outer side surface, the edge of a reinforcing surface of the plate being continuously bent from upper side to outer side and lower side, A metal sheet forming a fastening groove on the back surface; A light guide plate that is seated on a reinforcing surface of the metal sheet; A light source that is bonded to an inner surface of the metal sheet so that heat is dissipated through the metal sheet at a side of the light guide plate; A display panel in which an edge is fixedly bonded to a horizontal surface of the metal sheet; And a back cover coupled to the back surface of the metal sheet so that the coupling ribs are inserted into the coupling grooves.

Description

[0001] Slim type display apparatus [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a display device, and more particularly, to a display device having a structure capable of eliminating a middle cabinet and a heat sink constituting a display device to reduce slimness and weight and reduce manufacturing costs.

2. Description of the Related Art Generally, a display device is a device for receiving and displaying an image signal, and includes a TV, a monitor, and the like. As means for displaying an image, an OLED (Organic Light Emitting Display) Display Device), and Plasma Display Panel (PDP).

In recent years, as the information society has developed, the demand for display devices has been increasing in various forms and gradually becoming lighter, larger and slimmer. Particularly, in the case of a display device applied to a TV, as the demand for a large-sized display device increases, there is an increasing demand for a lightweight and slimmer TV structure as well as high picture quality and high definition.

FIG. 1 is an exploded perspective view showing a conventional slim type display device, and FIG. 2 is an enlarged sectional view showing an assembling structure of a light source part which is a main part of the display device of FIG.

As can be seen from these figures, the conventional display device includes a back cover (10) for forming a storage space therein, a light guide plate (20) seated in a storage space inside the back cover, an optical A light source module 40 disposed at the side of the light guide plate in the interior accommodating space of the back cover, a middle cabinet 50 fastened along the edge of the back cover, a liquid crystal panel 60). The display device may include a reflection sheet 11 under the light guide plate 20 and the liquid crystal panel 60 may be fixed to the bottom surface of the light guide plate 20 by means of a double- (51).

Here, the light source module 40 constitutes an LED array in which a plurality of LEDs 42 are mounted on the substrate 41 at a predetermined interval, and the LED array is attached to the LED housing 43, Respectively. The LED housing 43 is a structure required for the light source module 40 of the display device as a heat sink for emitting heat generated from the LED 42. [

In addition, the middle cabinet 50 stably mounts the liquid crystal panel 60 and forms the rim of the display device. The middle cabinet 50 is made of a plastic article or a metal frame made of extruded aluminum. Nickel chrome is separately plated or anodized on the surface to improve the appearance.

Accordingly, the display device according to the related art is required to have an LED housing 43 for heat dissipation and a middle cabinet 50 for external appearance and panel mounting, which limits the thickness of the device, The applied plating process is becoming a major factor for increasing the manufacturing cost of the display device.

In addition, the back cover 10 has a structure for stably supporting main components such as a light guide plate, a light source module, and a liquid crystal panel, and should have a plate having sufficient rigidity. For example, the back cover 10 is disclosed in Korean Patent No. 10-1472340 (ACM: Aluminum Composite Material) proposed in the prior art (Prior Art 1). The ACM back cover of the prior art document 1 has a multi-layer structure composed of a resin core layer and a pair of aluminum skin layers disposed between the resin core layers. The stiffness of the back cover 10 is proportional to the thickness of the composite material. As the size of the display device has recently been increased, the thickness of the back cover gradually becomes thicker, which increases the manufacturing cost and limits the slimness and weight of the display device.

Accordingly, in recent years, there has been a growing demand for a slimmer and lighter display device with a larger size. In accordance with this demand, Korean Patent Laid-Open Publication No. 10-2012-0000625 (prior art document 2) And a method of manufacturing the same. However, in the display device of the prior art document 2, a large number of parts are still required in spite of deleting a part of the display device, which is a limit to the slimness and weight reduction of the display device.

Korean Registered Patent No. 10-1472340 (registered and display device) Korean Patent Laid-Open No. 10-2012-0000625 (filed on Apr. 14, 2012, display device and manufacturing method thereof)

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above-mentioned problems, and it is an object of the present invention to solve the problem of heat dissipation and appearance while eliminating the heat sink (LED housing) and middle cabinet required in the conventional display device, And a display device having such a structure that can save power consumption.

It is another object of the present invention to provide a display device which is advantageous in that the back cover exhibits sufficient rigidity while reducing the thickness of the back cover, thereby being slim and lightweight and capable of reducing manufacturing cost.

According to an aspect of the present invention, there is provided a display device including: an inner side surface, a horizontal surface, and an outer side surface, the edge of a reinforcing surface of the plate being continuously bent from upper side to outer side and lower side, A metal sheet forming a fastening groove on the back surface; A light guide plate that is seated on a reinforcing surface of the metal sheet; A light source that is bonded to an inner surface of the metal sheet so that heat is dissipated through the metal sheet at a side of the light guide plate; And a display panel having an edge fixedly joined to the horizontal surface of the metal sheet.

The display device of the present invention may further include a back cover coupled to the back surface of the metal sheet so that the edge of the support surface of the plate is folded upward to form a fastening rib and the fastening rib is inserted into the fastening groove.

According to the present invention having the above-described structure, the edge of the metal sheet is bended in the shape of '∩' to decorate the outer appearance of the display device, thereby removing the middle cabinet, thereby exhibiting an advantageous effect in reducing the size and weight of the display device.

Further, since the heat dissipation of the light source module is performed through the metal sheet, the LED housing for heat dissipation is removed, which is advantageous in reducing the size and weight of the display device.

Further, according to the present invention, the metal sheet complements the rigidity of the back cover, thereby reducing the thickness of the back cover, thereby exhibiting an advantageous effect for slimness and weight reduction.

Further, the present invention has the effect of reducing the manufacturing cost by replacing the middle cabinet, the LED housing, and the thickness of the back cover by the metal sheet.

FIG. 1 is an exploded perspective view of a conventional slim type display device,
FIG. 2 is an enlarged sectional view showing an assembling structure of a light source part which is a main part of the display device of FIG. 1,
3 is an exploded perspective view showing a main configuration of a display device according to an embodiment of the present invention,
4 is a front view showing a main configuration of a display device according to an embodiment of the present invention;
5 is a cross-sectional view illustrating an assembling structure of the display device of FIG. 4 in detail,
FIG. 6 is a view showing a metal sheet as a main part of the display device of FIG. 4,
FIG. 7 is a view showing a back cover which is a main part of the display device of FIG. 4,
8 is a cross-sectional view showing various assembling examples of a liquid crystal panel for a display device according to an embodiment of the present invention, and Fig.
9 is a cross-sectional view illustrating an assembly structure of a display device according to another embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIGS. 3 and 4 are an exploded perspective view and a front view showing a main configuration of a display device according to an embodiment of the present invention, FIG. 5 is a sectional view in the II-II direction showing a detailed assembly structure of the display device, Is a view showing a metal sheet and a back cover which are the main parts of a display device.

3 to 5, the display device of the present invention includes a back cover 100, a metal sheet 200 disposed in front of the back cover, an optical member 300 disposed in front of the metal sheet, And a display panel 400 disposed in front of the optical member, and a control panel (not shown) may be fastened to the back surface of the back cover.

The display panel 400 described above is an image display element that expresses an image from an external signal. In the present invention, the display panel 400 is composed of a liquid crystal panel. A known panel in which a TFT substrate and a color filter substrate, which are partitioned into a plurality of cells while facing each other with a liquid crystal layer interposed therebetween, are arranged to face each other can be applied to the liquid crystal panel by controlling the arrangement of the liquid crystal layer according to an electrical signal . The display panel 400 is fixedly bonded via the foam pad 410.

The optical member 300 described above is configured to provide a uniform surface light source to the display panel 400 and includes an LED array 310, a reflective sheet 320, a light guide plate 330, and an optical sheet 340 . The optical member 300 may further include a light cover 350 disposed on the LED array 310 to prevent leakage of light emitted from the LED array 310.

The LED array 310 includes a plurality of LEDs 312 mounted on a substrate 311 as a light source of a display device to form an array. Various kinds of light sources other than the LED may be used as a light source of the display device. The reflective sheet 320 is disposed on the inner surface of the metal sheet 200 under the light guide plate 330 and reflects light leaking to the lower portion of the light guide plate 330 to the inside of the light guide plate to improve the brightness of the display device. The light guide plate 330 is a light diverting device that converts light from a plurality of point light sources incident from the LED array 310 into total light through the total internal reflection to provide the light to the display panel 400. The light guide plate 330 is made of a transparent acrylic resin having a predetermined refractive index and may be made of resin such as polymethylmethacrylate (PMMA), poly styrene (PS), metastyrene (MS), or polycarbonate have. The optical sheet 340 condenses and diffuses the light emitted from the light guide plate 330 to control the brightness and the uniformity of the brightness of the backlight unit. The optical sheet 340 may be composed of a plurality of light control sheets including a prism sheet and a diffusion sheet.

The reflection sheet 320, the light guide plate 330, and the optical sheet 340 are sequentially stacked in the storage space inside the metal sheet 200, as shown in FIG. In particular, the LED array 310 is attached directly to the inner surface 220 of the metal sheet 200 at the side of the light guide plate 330, and heat generated from the LED array 310 is emitted through the metal sheet 200 . Therefore, the metal sheet 200 functions as a heat sink for emitting heat generated in the LED array 310, and the metal sheet 200 is made of a metal material having excellent thermal conductivity.

The metal sheet 200 described above supplements the rigidity of the back cover 100 to support the display panel 400 while decorating the rim of the display device and emit heat generated from the LED array 310. The metal sheet 200 is made of a high-strength metal material having excellent thermal conductivity so as to efficiently dissipate heat while reinforcing the back cover 100. Examples of the metal sheet 200 include an aluminum (Al) alloy, a magnesium (Mg) alloy, (EGI: Electrolytic Galvanized Iron) or stainless steel (STS: Stainless Steel).

In addition, the metal sheet 200 has a square shape corresponding to the display panel 400, and in particular, the edges are bended in the shape of '∩'. The edge folded portion of the metal sheet 200 forms a front edge portion 230a and a side edge portion 240a as shown in FIG. 4, thereby improving the appearance of the edge of the display device. At this time, in order to further improve the appearance of the display device, the metal sheet 200 may be subjected to various decorative treatments such as color coating on the surface (particularly, the edge surface).

6, the metal sheet 200 according to the embodiment of the present invention has a shape of '∩' in which the edges are continuously bent upward, outwardly, and downwardly. The metal sheet 200 includes a plate-like reinforcing surface 210, an inner surface 220 where the edge of the reinforcing surface 210 is first bent upward, a horizontal surface 220 that is secondarily bent outward horizontally from the end of the inner surface 220, (230) and an outer surface (240) that is thirdly bent downward from the end of the horizontal surface (230).

Here, the reinforcement surface 210 is a rectangular sheet, the display panel 400 is coupled to the front surface of the display panel 400, and the back surface of the back panel 100 is coupled with the rear surface of the back panel 100, Reinforce. The inner side surface 220 is bent to the upper side of the reinforcing surface 210, and the LED array 310 is attached to the inside of the inner side surface 220 to absorb the heat generated in the LED array 310 and emit it to the outside. The horizontal surface 230 has a predetermined width at the same or slightly higher position as the front surface of the coupled display panel 400 and forms a front edge portion of the display device (refer to 230a in FIG. 4). The outer side surface 240 is formed at a predetermined spacing from the inner side surface 220 to form a side edge portion (refer to 240a in FIG. 4) of the display device. The inner surface of the metal sheet 200 is formed by folding the edges of the inner sheet 220 and the inner surface of the outer sheet 240 to form an accommodation space in which the optical members 300 are seated. A coupling groove 250 having a predetermined width is formed to allow the back cover 100 to be coupled.

3 to 5, the back cover 100 is coupled to the rear surface of the metal sheet 200 to support the optical member 300 and the display panel 400 together with the metal sheet 200, (Not shown) such as a wall or a bracket. The back cover 100 is made of a high-strength metal material so as to stably support the optical member 300 and the display panel 400. For example, the back cover 100 may be made of aluminum (Al), magnesium Mg, an electrogalvanized steel sheet (EGI), or stainless steel (STS). At this time, the back cover 100 and the metal sheet 200 may be made of the same material or may be composed of different materials.

Referring to FIG. 7, the back cover 100 according to the embodiment of the present invention has an L shape in which the edges are bent upward. The back cover 100 includes a plate-like support surface 110 and a fastening rib 120 having an edge of the support surface 110 bent upward. Here, the support surface 110 is a rectangular plate that supports the optical member 300 and the display panel 400 together with the reinforcement surface 210 of the metal sheet 200, And the edge of the surface 110 is bent upward so that the back cover 100 is coupled to the metal sheet 200.

The metal sheet 200 and the back cover 100 having the above-described structure are coupled by fastening the fastening groove 250 and the fastening rib 120. That is, as shown in FIG. 5, the back cover 100 is engaged with the metal sheet 200 while the coupling rib 120 at the edge is inserted into the coupling groove 250 of the metal sheet 200. It is preferable that the width of the coupling groove 250 is smaller than the thickness of the coupling rib 120 so that the coupling between the coupling rib 120 and the coupling groove 250 can be stably maintained.

The metal sheet 200 and the back cover 100 may be further coupled to each other using an adhesive member (not shown). The adhesive sheet may be formed on the reinforcing surface 210 of the metal sheet 200 and the back cover 100, So that the binding force between the metal sheet 200 and the back cover 100 is further enhanced. The adhesive member may be composed of a metal sheet 200 and an adhesive applied to the surface of the back cover 100, or may be composed of a double-sided tape.

6 and 7, the reinforcing surface 210 and the supporting surface 110, which form the bottom surface of the metal sheet 200 and the back cover 100, are formed by bending or stepping processes 210a and 110a ) Can be applied. Such bending or stepping may be performed by forming the irregularities on the bottom surface of the metal sheet 200 and the back cover 100 so that the reinforcing surface 210 of the metal sheet 200 and the supporting surface 110 of the back cover 100 It is possible to more stably support the optical member 300 and the display panel 400 by exhibiting excellent rigidity with respect to the bending property.

8 is a cross-sectional view illustrating various assemblies of a liquid crystal panel for a display device according to an embodiment of the present invention.

The display device display panel 400 of the present invention is bonded and fixed to the entire horizontal surface 230 of the metal sheet 200 as shown in (a). In this case, since the entire surface of the display panel 400 in which the image is represented constitutes the front surface of the display device, the display panel 400 has a GIP (Gate In Panel) structure in which a gate driving circuit for controlling an image is disposed inside the panel It accomplishes.

Also, the display panel is fixed by being joined to the inner horizontal surface of the metal sheet 200, that is, the second horizontal surface 232, as shown in (b). The metal sheet 200 for this purpose is divided into a horizontal plane 230 by a first horizontal plane 231 and a second horizontal plane 232 by a step lower than a first horizontal plane 231 inside the first horizontal plane 231 And is formed as a double structure. In this case, since the first horizontal surface 231 of the metal sheet 200 forms the front edge portion (see 230a in FIG. 4) of the metal sheet 200, the gate driving circuit for controlling the image is disposed at the edge of the panel. The display panel 400 may also be applied.

9 is a cross-sectional view illustrating an assembly structure of a display device according to another embodiment of the present invention.

As shown in FIG. 9, the display device according to another embodiment of the present invention has a structure in which the metal sheet 200 replaces the back cover to remove the back cover. For this purpose, the metal sheet 200 must have sufficient rigidity to support the optical member 300 and the display panel 400, and the metal sheet has a thickness of at least 0.3 mm or more.

The display device according to another embodiment of the present invention can be applied to a structure in which a large load is not applied to the metal sheet 200 according to the characteristics of the product or to an apparatus having a display panel 400 having a small size.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

100: Back cover
110: support surface 120: fastening rib
200: metal sheet
210: reinforcement surface 220: inner surface
230: horizontal plane 231: first horizontal plane
232: second horizontal plane 240: outer side
250: fastening groove
300: optical member 310: LED array
320: reflective sheet 330: light guide plate
340: optical sheet 350: light cover
400: display panel
410: foam pad

Claims (6)

A metal sheet which forms an inner side surface, a horizontal surface and an outer side surface with the edge of the reinforced surface on the plate being continuously bent upward, outward and downward, and forming a fastening groove on the back surface between the inner side surface and the outer side surface;
A light guide plate that is seated on a reinforcing surface of the metal sheet;
A light source that is bonded to an inner surface of the metal sheet so that heat is dissipated through the metal sheet at a side of the light guide plate;
A back cover coupled to the back surface of the metal sheet so that the coupling rib is inserted into the coupling groove; And
And a display panel having an edge fixedly joined to the horizontal surface of the metal sheet. delete The metal sheet according to claim 1,
Wherein a coupling using an adhesive member interposed between the reinforcing surface and the supporting surface is further applied. The metal sheet according to claim 1,
Al alloy, Mg alloy, EGI, and STS. The method according to claim 1,
Wherein the reinforcing surface of the metal sheet or the supporting surface of the back cover is subjected to bending or stepping. The method according to claim 1,
Wherein the metal sheet comprises a first horizontal surface and a second horizontal surface at a lower level than a first horizontal surface inside the first horizontal surface,
Wherein an edge of the display panel is fixedly bonded to the second horizontal surface.
KR1020160010582A 2016-01-28 2016-01-28 Slim type display apparatus KR101773440B1 (en)

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Application Number Priority Date Filing Date Title
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KR101773440B1 true KR101773440B1 (en) 2017-09-01

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Publication number Priority date Publication date Assignee Title
KR20190058733A (en) 2017-11-20 2019-05-30 삼성디스플레이 주식회사 Display device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101054768B1 (en) * 2010-06-11 2011-08-05 엘지이노텍 주식회사 A backlight unit and a display device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101054768B1 (en) * 2010-06-11 2011-08-05 엘지이노텍 주식회사 A backlight unit and a display device

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