KR20130053568A - Backlight unit and display apparatus thereof - Google Patents
Backlight unit and display apparatus thereof Download PDFInfo
- Publication number
- KR20130053568A KR20130053568A KR1020110118711A KR20110118711A KR20130053568A KR 20130053568 A KR20130053568 A KR 20130053568A KR 1020110118711 A KR1020110118711 A KR 1020110118711A KR 20110118711 A KR20110118711 A KR 20110118711A KR 20130053568 A KR20130053568 A KR 20130053568A
- Authority
- KR
- South Korea
- Prior art keywords
- backlight unit
- light emitting
- light
- embossed pattern
- substrate
- Prior art date
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0055—Reflecting element, sheet or layer
-
- 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
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
-
- 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
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- 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
- G02F1/133602—Direct backlight
- G02F1/133611—Direct backlight including means for improving the brightness uniformity
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
Abstract
Description
The present invention relates to a display device having a backlight unit.
(PDP), Electro Luminescent Display (ELD), Vacuum Fluorescent Display (VFD), and the like have been developed in recent years in response to the demand for display devices. Display) have been studied and used.
Among them, the liquid crystal panel of the LCD includes a liquid crystal layer and a TFT substrate and a color filter substrate facing each other with the liquid crystal layer interposed therebetween, and have no self-luminous power to display an image using light provided from the backlight unit. can do.
An object of the present invention is to provide a backlight unit that is easy to manufacture and a display device using the same.
A backlight unit according to an embodiment of the present invention, a substrate; A light emitting element formed on the substrate; And a reflecting plate disposed on an upper side of the substrate and having an embossed pattern having a convex shape in an upward direction, wherein the light emitting element is disposed in a space between the embossed pattern of the reflecting plate and the substrate and is emitted from the light emitting element. A plurality of holes through which light passes are formed in the relief pattern.
A display device according to an embodiment of the present invention, the backlight unit; And a display panel disposed above the backlight unit, wherein the backlight unit comprises: a substrate; A light emitting element formed on the substrate; And a reflecting plate disposed on an upper side of the substrate and having an embossed pattern having a convex shape in an upward direction, wherein the light emitting element is disposed in a space between the embossed pattern of the reflecting plate and the substrate and is emitted from the light emitting element. A plurality of holes through which light passes are formed in the relief pattern.
According to an embodiment of the present invention, the manufacturing cost of the backlight unit may be reduced by eliminating the lens structure of the light source, and the appearance of the display apparatus may be improved by reducing the thickness of the backlight unit.
1 is a rear perspective view of the display device.
2 is an exploded perspective view showing an embodiment of the configuration of the display device.
3 is a diagram illustrating an embodiment of a configuration of a backlight unit.
4 is a cross-sectional view showing a detailed configuration of a portion A shown in FIG. 3.
5 is a perspective view showing the configuration of a reflecting plate according to an embodiment of the present invention.
6 is a perspective view illustrating an embodiment of a structure of an embossed pattern formed on the reflector.
7 is a perspective view illustrating a configuration of a backlight unit according to an embodiment of the present invention.
8 is a view for explaining the function of the embossed pattern.
9 is a cross-sectional view illustrating a configuration of a display device according to an embodiment of the present invention.
10 is a perspective view illustrating a configuration of a display device according to an embodiment of the present invention.
11 is an exploded perspective view showing the configuration of a display device according to an embodiment of the present invention.
Hereinafter, the present invention will be described with reference to the accompanying drawings. Hereinafter, the embodiments may be modified into various other forms, and the technical scope of the embodiments is not limited to the embodiments described below. The embodiments are provided so that this disclosure may be more fully understood by those skilled in the art. Accordingly, the shapes and sizes of the elements in the drawings and the like can be exaggerated for clarity.
1 is a rear perspective view of an embodiment of a configuration of a display apparatus.
Referring to FIG. 1, the
At this time, the
In addition, the
For example, the
2 is an exploded perspective view illustrating an embodiment of a configuration of a display device.
Referring to FIG. 2, the
In addition, the
Meanwhile, the
In this case, the
As described above, the
Accordingly, the
Meanwhile, the
The
In this case, when the plurality of LEDs are used as the light source of the
In the present embodiment, as an example, the light directing direction from which the light is emitted from the LED is emitted in a manner toward the
Meanwhile, the
In this case, the
Since the configuration of the
FIG. 3 illustrates an embodiment of the configuration of the backlight unit, and illustrates the configuration of the
Referring to FIG. 3, the
The
Meanwhile, the first layer 150 may be a printed circuit board (PCB) substrate on which a plurality of
The
As an embodiment of the present invention, the
More specifically, the LED package constituting the
In addition, the
The
That is, the
For example, only some of the plurality of
Meanwhile, an area of the
FIG. 4 is a sectional view showing an embodiment of the configuration of the
Referring to FIG. 4, the
The light emitted from the
In this case, in order to maintain the uniformity of the light emitted from the
Meanwhile, the
A light extraction pattern may be formed on the upper surface of the
The light extraction pattern is also referred to as a diffusion pattern because it has a function of diffusing light emitted from the
In addition, a
In this case, light emitted from the
That is, by forming a light shielding pattern that performs a light reflection function on the
In addition, a portion of the light emitted upward from the
According to one embodiment of the present invention, by removing the
Hereinafter, a configuration of the
5 is a perspective view showing the configuration of a reflecting plate according to an embodiment of the present invention.
Referring to FIG. 5, the
The plurality of
That is, the structure of the
Referring to FIG. 6, the
For example, the
In addition, the
For example, in order to reduce the occurrence of a hot spot in a portion corresponding to the position of the
In addition, in order to improve the illuminance uniformity of the
For example, the size of each of the plurality of
That is, the size of the
Meanwhile, the
FIG. 7 is a perspective view illustrating a configuration of a backlight unit according to an exemplary embodiment of the present invention. A description of the same configuration as that described with reference to FIGS. 1 to 6 of the configuration of the
Referring to FIG. 7, the
On the other hand, the
Referring to FIG. 8, a portion of the light emitted upward from the
On the other hand, a part of the light emitted from the
The light reflected from the
As described above, the light emitted from the
Accordingly, the light emitted from the
Hereinafter, a configuration of a display apparatus according to an exemplary embodiment of the present invention will be described in detail with reference to FIGS. 9 to 11.
9 to 11, a
The
As shown in FIG. 11, the
For example, a hot spot in which light emitted from the
In addition, the
Further, the light is uniformly distributed over the entire surface of the
Meanwhile, the
The
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, It will be understood that various modifications and applications other than those described above are possible. For example, each component specifically shown in the embodiments of the present invention can be modified and implemented. It is to be understood that all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (11)
A light emitting element formed on the substrate; And
A reflection plate disposed on an upper side of the substrate and having an embossed pattern having a convex shape in an upward direction;
The light emitting device is disposed in the space between the embossed pattern of the reflective plate and the substrate, the backlight unit is formed in the embossed pattern a plurality of holes through which the light emitted from the light emitting element passes.
A backlight unit having a dome shape around a position where the light emitting element is formed.
And a plurality of holes formed in the embossed pattern at least two of which are different in size from each other.
The first unit of the plurality of holes is closer to the center portion of the embossed pattern than the second hole, the first hole is smaller in size than the second hole.
The second hole of the plurality of holes is closer to the center portion of the embossed pattern than the third hole, the third hole is smaller in size than the second hole.
The backlight unit is not formed in the center portion of the embossed pattern.
The backlight unit is formed on the reflector to correspond to the position and the number of light emitting elements provided in the backlight unit.
Backlight unit that is an LED package without a lens.
A display panel disposed above the backlight unit;
The backlight unit
Board;
A light emitting element formed on the substrate; And
A reflection plate disposed on an upper side of the substrate and having an embossed pattern having a convex shape in an upward direction;
The light emitting device is disposed in the space between the embossed pattern of the reflective plate and the substrate, the display device is a plurality of holes through which the light emitted from the light emitting element passes through the embossed pattern.
The plurality of holes formed in the embossed pattern at least two different sizes from each other.
The display device increases in size as it moves away from the center of the relief pattern.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020110118711A KR20130053568A (en) | 2011-11-15 | 2011-11-15 | Backlight unit and display apparatus thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020110118711A KR20130053568A (en) | 2011-11-15 | 2011-11-15 | Backlight unit and display apparatus thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
KR20130053568A true KR20130053568A (en) | 2013-05-24 |
Family
ID=48662752
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020110118711A KR20130053568A (en) | 2011-11-15 | 2011-11-15 | Backlight unit and display apparatus thereof |
Country Status (1)
Country | Link |
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KR (1) | KR20130053568A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107703678A (en) * | 2017-09-11 | 2018-02-16 | 青岛海信电器股份有限公司 | A kind of down straight aphototropism mode set and display device |
CN109696775A (en) * | 2018-11-23 | 2019-04-30 | 友达光电股份有限公司 | Backlight module |
-
2011
- 2011-11-15 KR KR1020110118711A patent/KR20130053568A/en not_active Application Discontinuation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107703678A (en) * | 2017-09-11 | 2018-02-16 | 青岛海信电器股份有限公司 | A kind of down straight aphototropism mode set and display device |
CN109696775A (en) * | 2018-11-23 | 2019-04-30 | 友达光电股份有限公司 | Backlight module |
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