KR101329790B1 - Curved back light unit and liquid crystal display having the same - Google Patents

Curved back light unit and liquid crystal display having the same Download PDF

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Publication number
KR101329790B1
KR101329790B1 KR1020130017489A KR20130017489A KR101329790B1 KR 101329790 B1 KR101329790 B1 KR 101329790B1 KR 1020130017489 A KR1020130017489 A KR 1020130017489A KR 20130017489 A KR20130017489 A KR 20130017489A KR 101329790 B1 KR101329790 B1 KR 101329790B1
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KR
South Korea
Prior art keywords
diffusion member
light source
seating portion
housing
curved
Prior art date
Application number
KR1020130017489A
Other languages
Korean (ko)
Inventor
이재익
김정수
이준학
Original Assignee
한솔테크닉스(주)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 한솔테크닉스(주) filed Critical 한솔테크닉스(주)
Priority to KR1020130017489A priority Critical patent/KR101329790B1/en
Application granted granted Critical
Publication of KR101329790B1 publication Critical patent/KR101329790B1/en

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    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133603Direct backlight with LEDs
    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/133305Flexible substrates, e.g. plastics, organic film
    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133608Direct backlight including particular frames or supporting means
    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F2001/133628Illuminating devices with cooling means

Abstract

The present invention relates to a curved backlight unit and a liquid crystal display device including the same, capable of minimizing a dark part which is partially formed on a curved diffusion member due to the difference of transmittance by transmitting light from an optical source to each part of the curved diffusion member with uniform luminous intensity when the light is transmitted to the curved diffusion member. The curved backlight unit according to the present invention includes: the optical source which emits the light according to power application; an optical source receiving unit which receives the optical source; and a housing which includes a diffusion member receiving unit which receives the diffusion member which diffuses the light which is emitted from the optical source. The optical source is regularly arranged on the substrate and is received on the optical source receiving unit of the housing. The optical source receiving unit and the diffusion member receiving unit of the housing are formed with an arc shape. The diffusion member which is received on the diffusion member receiving unit of the housing is composed of a curved plate with an arc top section and an arc bottom section and includes a high shielding property or a high shielding sheet.

Description

Curved back light unit and liquid crystal display having the same {curved back light unit and liquid crystal display having the same}

The present invention relates to a backlight unit and a liquid crystal display device, and more particularly, when the light from the light source is irradiated with the curved diffusion member, the light transmitted from the light source can be transmitted through each portion of the curved diffusion member with a relatively uniform amount of light. The present invention relates to a curved backlight unit and a liquid crystal display device having the same to minimize the formation of a dark portion on the curved diffusion member.

The display panel of the liquid crystal display cannot emit light by itself.

Therefore, a backlight unit having a light source that emits light when power is applied is provided at the rear of the display panel of the liquid crystal display device.

As such, since the backlight unit is provided behind the display panel, light from the backlight unit passes through the diffusion member to the display panel so that the display panel may emit light.

Meanwhile, as shown in FIG. 3, a flat panel diffusion member 200 ′ is generally applied to a general liquid crystal display device including the flat panel backlight unit 100 ′.

However, recently, since the display panel of some liquid crystal display devices is manufactured to have a curved surface, the curved diffusion member 200 ″ may be applied as shown in FIG. 4.

When the light from the curved diffusion member 200 "reaches the curved display panel, the light from the flat diffusing member 200 'may be added to the flat panel display, thereby increasing the display effect, thereby increasing the display effect. do.

However, when the light is irradiated to the curved diffusion member 200 ″ through the general backlight unit, that is, the flat panel backlight unit 100 ′, there is a problem that the quality of the liquid crystal display device is reduced.

That is, when light is irradiated to the curved diffusion member 200 ″ through light emission 110 ′ of the flat panel backlight unit 100 ′, a part of the light incident obliquely is partially reflected and the reflected light is guided toward the center of the diffusion member, thereby providing a curved surface. A dark portion is formed outside the center of the diffusion member 200 ″, resulting in a problem of deterioration in image quality of the liquid crystal display device.

For this reason, the relevant field is seeking a solution to solve the problem of forming a dark portion outside the center of the curved diffusion member when irradiating light to the curved diffusion member, but until now has not been satisfactory. .

The present invention has been proposed in view of the above situation, and the curved backlight unit to solve the problem that the dark portion is formed on the outer side of the center of the curved surface diffusion member when irradiating light to the curved surface diffusion member leads to deterioration of image quality; It is an object of the present invention to provide a liquid crystal display device having the same.

Curved backlight unit according to the present invention,

It includes a housing provided with a light source for emitting light in accordance with the application of power, a light source seating portion on which the light source is seated, and a diffusion member seating portion on which a diffusion member for diffusing light emitted from the light source is mounted.

The light source is disposed on the substrate at boiling intervals to be seated on the light source seating portion of the housing, the light source seating portion and the diffusion member seating portion of the housing is arc-shaped, the diffusion member seated on the diffusion member seating portion of the housing is Curved shape with arc top and bottom faces,
The diffusion member seated on the diffusion member seating portion of the housing is characterized in that the high shielding itself or has a high shielding sheet.

Here, the light source is characterized in that it is disposed on the substrate gradually toward the outside from the center of the curved-shaped diffusion member.

And the light source is characterized in that it is disposed continuously in front, rear, left and right on the substrate.

And an arrangement interval between the light sources is equal to or less than a height between the light source and the diffusion member.

And the light source seating portion and the diffusion member seating portion of the housing is characterized in that the arc of the same curvature.

The upper and lower surfaces of the diffusion member seated on the diffusion member seating portion of the housing may be arc-shaped having the same curvature as the light source seating portion and the diffusion member seating portion.

delete

And a heat sink for heat dissipation is provided in the light source seating portion of the housing.

The curved backlight unit and the liquid crystal display device having the same according to the present invention include a diffusion member seating portion of the housing having an arc shape, and a curved plate diffusion member is coupled to the diffusion member seating portion of the arc shape, and is mounted on the light source seating portion of the housing. Since the light source is disposed at a boiling interval on the substrate, the amount of light irradiated outside the center of the diffusing member is increased, and the reflected light is diffused even when the light from one light source is obliquely incident on the curved diffusion member to cause partial reflection. Since it is guided to the outside of the center of the member there is an effect that can minimize the formation of the arm portion outside the center of the diffusion member.

1 is a cross-sectional view for explaining the structure of the curved backlight unit according to the present invention
Figure 2 is an exemplary view for explaining the light irradiation to the curved surface diffusion member through the curved backlight unit according to the present invention
3 is an exemplary view for explaining light irradiation to a flat plate diffusion member through a flat panel backlight unit;
4 is an exemplary view for explaining light irradiation to a curved diffusion member through a flat panel backlight unit;

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the curved backlight unit 100 according to the present invention includes a light source 110 and a housing 120.

The light source 110 emits light when power is applied.

Such a light source 110 is preferably disposed continuously in front, rear, left and right on the substrate 111.

Since the light source 110 is disposed continuously in front, rear, left and right on the substrate 111, light irradiation from the light source 110 can be made wide.

In this case, the light sources 110 may be disposed on the substrate 111 at boiling intervals.

Since the light sources 110 are disposed at boiling intervals on the substrate 111, the amount of light may be increased or decreased according to the arrangement intervals of the light sources 110.

Here, the light source 110 is disposed at boiling intervals, it is preferable to be disposed on the substrate 111 gradually toward the outside from the center of the diffusion member 200 to be described later.

The light source 110 is directed toward the outside from the center of the diffusion member 200 and is densely disposed on the substrate 111 so that the amount of light irradiated to the outside of the center of the diffusion member 200 may be increased.

At this time, the arrangement interval P between the light source 110 is preferably equal to or less than the height H between the light source 110 and the diffusion member 200.

The light source 110 is different from the light irradiated from one light source 110 by the arrangement interval P between the light sources 110 being equal to or less than the height H between the light source 110 and the diffusing member 200. Since the light irradiated from the light is overlapped, the light amount can be added by the light overlap.

On the other hand, the light source 110 itself is the same as that applied to the general backlight unit, the detailed description of the light source 110 itself is omitted.

The housing 120 is provided with a light source seating portion 121 in which the light source 110 is seated at an inner lower portion thereof, and a diffusion member seat in which a diffusion member 200 for diffusing light emitted from the light source 110 is seated at an upper end thereof. Part 122 is provided.

It is preferable that the light source seating portion 121 and the diffusion member seating portion 122 of the housing 120 have an arc shape.

Since the light source seating portion 121 and the diffusion member seating portion 122 of the housing 120 are arc-shaped, the mounting of the diffusion member 200 to be curved can be easily performed, and the light irradiated from the light source 110 can be easily achieved. When partially reflected in the process of contacting the diffusion member 200, the reflected light can be guided to the outside of the center of the diffusion member 200.

At this time, the light source seating portion 121 and the diffusion member seating portion 122 of the housing 120 is preferably an arc of the same curvature.

Since the light source seating portion 121 and the diffusion member seating portion 122 of the housing 120 are arcs having the same curvature, the light irradiation distance of each light source 110 can be constant, so that the light irradiated to the diffusion member 200 The luminous intensity can be made constant.

In addition, the heat sink 123 may be provided at the light source seating part 121 of the housing 120.

Since the heat sink 123 is provided in the light source seating part 121 of the housing 120, it is possible to prevent overheating of the light source 110 due to lighting.

At this time, the heat sink 123 may be any structure and method of the usual as long as the heat sink 123 can be radiated, so detailed description of the heat sink 123 itself will be omitted.

On the other hand, the diffusion member 200 which is seated on the diffusion member seating portion 122 of the housing 120 is preferably a curved plate having an arc-shaped top surface and the bottom surface.

As the upper and lower surfaces of the diffusion member 200 become arcs, the display panel not only can be easily seated on the diffusion member seating portion 122 of the housing 120 that becomes arcs, but also becomes a curved display panel (not shown in the drawing). ) Light can be uniformly applied throughout.

At this time, the upper surface and the lower surface of the diffusion member 200 is preferably the arc shape of the same curvature as the light source seating portion 121 and the diffusion member seating portion 122 of the housing 120.

The upper and lower surfaces of the diffusion member 200 become arcs of the same curvature as those of the light source seating portion 121 and the diffusion member seating portion 122 of the housing 120, thereby diffusing the member 200 to the diffusion member seating portion 122. Not only can the mounting be made tight, but the light from the mounting light source 110 to the light source seating part 121 can be minimized to be refracted in the process of passing through the diffusion member 200 seated on the diffusion member seating part 122. It becomes possible.

At this time, the diffusion member 200 itself is a high shielding, or preferably provided with a high shielding sheet (not shown in the figure).

The diffusion member 200 itself becomes a high shielding or by providing a high shielding sheet it is possible to minimize the light bleeding in the light diffusion process.

At this time, the high shielding diffusion member or the high shielding sheet is to use a conventional product, the detailed description of the high shielding diffusion member or high shielding sheet is omitted.

Meanwhile, the main feature of the liquid crystal display device (not shown in the drawing) including the curved backlight unit 100 according to the present invention resides in the curved backlight unit 100 described above. It is omitted.

Referring to the light irradiation from the curved backlight unit 100 as described above in detail.

In the present invention, the housing 120 is provided with an arc-shaped light source seating portion 121 and a diffusion member seating portion 122.

The light source 110 is disposed on the light source seating part 121 in an arc shape, and the curved member diffusion part 200 is seated on the diffusion member seating part 122.

Therefore, when power is applied to the light source 110 to emit light, light diffuses through the diffusion member 200 to diffuse light from the diffusion member 200.

In this case, when light from each light source 110 is incident perpendicularly to the diffusion member 200, the light is transmitted without reflection, but the light emitted from the light source 110 is irradiated at an angle of 60 ° to the left and right about a vertical line. Therefore, some of the light from the light source 110 is obliquely incident on the diffusion member 200, so that partial reflection is performed.

As the light partially reflected in the process of obliquely entering the diffusion member 200 is not transmitted to the outside of the diffusion member 200 as described above, a loss of the amount of transmitted light occurs.

However, in the present invention, the light source seating part 121 has an arc shape having the same curvature as the top and bottom surfaces of the diffusion member 200, and a substantial portion of the light from each light source 110 is vertically diffused. Since it is incident on the light source, partial reflection can be reduced, thereby minimizing the amount of transmitted light due to the partial reflection.

On the other hand, the loss of the transmitted light amount due to the partial reflection in the diffusion member 200 forms a dark portion outside the center of the diffusion member 200, and as a result, the image quality of the liquid crystal display may be reduced.

However, in the present invention, the light sources 110 are not only arranged at boiling intervals, but are also gradually arranged toward the outside from the center of the diffusion member 200, and the arrangement interval between the light sources 110 is the light source 110 and the diffusion. As the height between the members 200 is less than or equal to the height, the amount of light irradiated outside the center of the diffusing member 200 is increased, and as shown in FIG. 2, the light irradiated from the light source 110 is diffused. Although the light is partially contacted with the light source 200, the reflected light is guided to the outside of the center of the diffusion member 200, and the light irradiated from one light source 110 and the light irradiated from another light source 110 adjacent thereto are irradiated overlapping each other. The amount of light may be preserved for loss of transmitted light due to partial reflection from the center to the outside of the center, thereby minimizing the formation of a dark portion outside the center of the diffusion member 200. It is.

As described above, in the curved backlight unit 100 and the liquid crystal display device having the same, the diffusion member seating portion 122 of the housing 120 is arc-shaped, and the diffusion member seating portion 122 is arc-shaped. The curved plate-shaped diffusion member 200 is coupled to, and the light source 110 seated on the light source seating part 121 of the housing 120 is disposed at a boiling interval on the substrate 111, the diffusion member 200. Since the amount of light irradiated outside the center is increased and the light from one light source 110 is obliquely incident on the curved plate diffusion member 200 to partially reflect the light, the reflected light is induced outside the center of the diffusion member 200. It is possible to minimize the formation of the arm portion outside the center of the diffusion member 200.

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, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

100, 100 ': backlight unit 110, 110': light source
111: substrate 120: housing
121: light source seating portion 122: diffusion member seating portion
123: heat sink 200, 200 ', 200 ": diffusion member
H: Height between light source and diffuser P: Arrangement gap between light source

Claims (9)

  1. It includes a housing provided with a light source for emitting light in accordance with the application of power, a light source seating portion on which the light source is seated, and a diffusion member seating portion on which a diffusion member for diffusing light emitted from the light source is mounted.
    The light source is disposed on the substrate at boiling intervals to be seated on the light source seating portion of the housing, the light source seating portion and the diffusion member seating portion of the housing is arc-shaped, the diffusion member seated on the diffusion member seating portion of the housing is Curved shape with arc top and bottom faces,
    The diffusion member seated on the diffusion member seating portion of the housing itself is a high shielding, or a curved backlight unit, characterized in that it comprises a high shielding sheet.
  2. The method of claim 1,
    The light source is a curved backlight unit, characterized in that it is disposed on the substrate gradually toward the outside from the center of the curved diffusion member.
  3. 3. The method of claim 2,
    The curved light source unit is characterized in that the light source is continuously arranged in front, rear, left and right on the substrate.
  4. The method of claim 1,
    Arrangement interval between the light source is a curved backlight unit, characterized in that less than or equal to the height between the light source and the diffusion member.
  5. The method of claim 1,
    Curved backlight unit, characterized in that the light source seating portion and the diffusion member seating portion of the housing is an arc of the same curvature.
  6. The method of claim 1,
    Curved backlight unit, characterized in that the upper and lower surfaces of the diffusion member seated on the diffusion member seating portion of the housing has the same curvature as the light source seating portion and the diffusion member seating portion.
  7. delete
  8. The method of claim 1,
    Curved backlight unit, characterized in that the heat sink for heat dissipation is provided in the light source mounting portion of the housing.
  9. And a housing provided with a light source for emitting light upon application of power, a light source seating part on which the light source is seated, and a diffusion member seating part on which a diffusion member for diffusing light emitted from the light source is mounted, wherein the light source is disposed at a boiling interval on the substrate. Arranged and seated on the light source seating portion of the housing, the light source seating portion and the diffusion member seating portion of the housing is arc-shaped, the diffusion member seated on the diffusion member seating portion of the housing is curved having an arc top and bottom surface The liquid crystal display device having a plate shape, and the diffusion member seated on the diffusion member seating portion of the housing is provided with a curved backlight unit which becomes a high shielding or has a high shielding sheet.
KR1020130017489A 2013-02-19 2013-02-19 Curved back light unit and liquid crystal display having the same KR101329790B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104141912A (en) * 2014-08-21 2014-11-12 深圳市华星光电技术有限公司 Curved surface shaped backlight module and curved surface shaped liquid crystal displayer
WO2019004649A1 (en) * 2017-06-27 2019-01-03 주식회사 토비스 Display device having three-dimensional effect

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007258089A (en) 2006-03-24 2007-10-04 Toshiba Lighting & Technology Corp Light source device and display device
JP2009093000A (en) 2007-10-10 2009-04-30 Hitachi Displays Ltd Liquid crystal display device
JP2010002486A (en) * 2008-06-18 2010-01-07 Hitachi Displays Ltd Liquid crystal display
KR20110025493A (en) * 2009-09-04 2011-03-10 엘지이노텍 주식회사 Backlight unit and liquid crystal display device using thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007258089A (en) 2006-03-24 2007-10-04 Toshiba Lighting & Technology Corp Light source device and display device
JP2009093000A (en) 2007-10-10 2009-04-30 Hitachi Displays Ltd Liquid crystal display device
JP2010002486A (en) * 2008-06-18 2010-01-07 Hitachi Displays Ltd Liquid crystal display
KR20110025493A (en) * 2009-09-04 2011-03-10 엘지이노텍 주식회사 Backlight unit and liquid crystal display device using thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104141912A (en) * 2014-08-21 2014-11-12 深圳市华星光电技术有限公司 Curved surface shaped backlight module and curved surface shaped liquid crystal displayer
US9341889B2 (en) 2014-08-21 2016-05-17 Shenzhen China Star Optoelectronics Technology Co., Ltd Curved backlight module and curved LCD device
WO2019004649A1 (en) * 2017-06-27 2019-01-03 주식회사 토비스 Display device having three-dimensional effect

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