KR20140046817A - Reflector plate and backlight unit including the plate - Google Patents
Reflector plate and backlight unit including the plate Download PDFInfo
- Publication number
- KR20140046817A KR20140046817A KR1020120112960A KR20120112960A KR20140046817A KR 20140046817 A KR20140046817 A KR 20140046817A KR 1020120112960 A KR1020120112960 A KR 1020120112960A KR 20120112960 A KR20120112960 A KR 20120112960A KR 20140046817 A KR20140046817 A KR 20140046817A
- Authority
- KR
- South Korea
- Prior art keywords
- reflector
- light source
- light
- plate
- reflecting
- 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
- 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
- G02B6/0066—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 characterised by the light source being coupled to the light guide
- G02B6/0073—Light emitting diode [LED]
-
- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Planar Illumination Modules (AREA)
Abstract
Description
The present invention relates to a reflective plate and a backlight unit including the same, and more particularly, to a reflective plate capable of minimizing the width of a bezel and removing a light guide plate, and a backlight unit including the same.
2. Description of the Related Art Generally, a liquid crystal display (LCD) is one of flat panel display devices for displaying images using a liquid crystal, and is thinner and lighter than other display devices, has advantages of low power consumption and low driving voltage And is widely used throughout the industry.
Such a liquid crystal display device is composed of a liquid crystal display panel for displaying an image and a backlight unit for providing light to the liquid crystal display panel.
The backlight unit may include a light source for generating light, a light guide plate that changes a path of light incident from the light source, and emits light toward the liquid crystal display panel, and a plurality of optical sheets and storage containers for improving luminance characteristics of light emitted from the light guide plate. Include. Here, the plurality of optical sheets include a diffusion sheet for diffusing light and a prism sheet for condensing light.
Such a backlight unit may be employed and used in any device using an LCD panel as well as a liquid crystal display device.
By the way, the light guide plate generally used in the backlight unit causes a problem of increasing the manufacturing cost and weight of the backlight unit. To overcome this, there was a need for a structure of a backlight unit without a light guide plate.
1 to 3 illustrate a backlight unit according to the prior art.
As shown in FIG. 1, the backlight unit according to the related art is configured such that a light source is provided under the
As illustrated in FIGS. 2 and 3, a
The
The
However, according to the related art, a separate light guide plate for evenly diffusing the light from the
The present invention has been made to solve the above-described problem, by arranging a light source in the center of the reflecting plate to uniformly diffuse the light from the light source to the optical sheet side, the backlight unit comprising the reflecting plate is a separate light guide plate To avoid the need to have a (Light Guide Plate).
In addition, the present invention is configured to further include a reflecting member in the reflecting plate to remove the dark portion formed on the upper portion of the light source and to improve the uniformity of light from the light source.
In addition, the present invention is to minimize the width of the bezel (bezel) in the light source is disposed in the center of the reflector of the backlight unit, compared to the conventional backlight unit is installed at both ends or one end.
Reflector according to an embodiment of the present invention for solving the above problems, the light source; A reflection unit having the light source disposed at a center portion and having a rising portion rising from both ends at the center of the light source; And a reflection member provided on the reflection portion.
According to another embodiment of the present invention, the reflective member is configured such that the reflective surface reflects light from the light source to the top of the support member.
According to another embodiment of the present invention, the reflecting member is a pair of the first reflecting member and the second reflecting member, the first reflecting member and the second reflecting member is disposed at the same distance around the light source do.
According to another embodiment of the present invention, the rising part is formed to have a rising curvature toward both ends from the central portion where the light source is disposed.
According to another embodiment of the present invention, the reflector is configured to gradually increase in thickness from the central portion where the light source is disposed to both ends of the reflector.
According to another embodiment of the present invention, a plurality of light sources are provided in a row at a central portion of the reflecting unit.
According to another embodiment of the present invention, the light source includes: a first LED emitting light to first ends of both ends of the reflector; And a second LED emitting light to second ends of both ends of the reflector.
According to another embodiment of the present invention, the first LED and the second LED are alternately arranged in a row.
According to another embodiment of the present invention, the light source is composed of a double-sided LED that emits light to both ends of the reflector.
According to another embodiment of the present invention, the light source is a pair of cross-sectional LED for emitting light to the cross-section, and emits light to both ends of the reflector.
The backlight unit according to an embodiment of the present invention includes a reflector according to the above embodiment.
The backlight unit according to another exemplary embodiment of the present invention may further include an optical sheet disposed on the reflective plate.
According to the present invention, since a light source is disposed at the center of the reflecting plate to uniformly diffuse the light from the light source toward the optical sheet, the backlight unit including the reflecting plate does not need to have a separate light guide plate.
In addition, according to the present invention can be configured to further include a reflecting member in the reflecting plate to remove the dark portion formed on the upper portion of the light source and to improve the uniformity of light from the light source.
In addition, since the light source is disposed at the center of the reflector in the backlight unit using the reflector according to the present invention, the width of the bezel may be minimized as compared with the backlight unit having the light sources installed at both ends or one end of the related art.
1 to 3 illustrate a backlight unit according to the prior art.
4 is a top view of a reflector according to an embodiment of the present invention.
5 is a cross-sectional view of a reflector according to an embodiment of the present invention.
6 is a cross-sectional view of a reflector according to another embodiment of the present invention.
7 to 9 are views for explaining a method of arranging a light source according to another embodiment of the present invention.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail to avoid unnecessarily obscuring the subject matter of the present invention. In addition, the size of each component in the drawings may be exaggerated for the sake of explanation and does not mean a size actually applied.
A reflective plate according to an embodiment of the present invention will be described with reference to FIGS. 4 and 5.
4 is a top view of a reflecting plate according to an embodiment of the present invention, and FIG. 5 is a cross-sectional view of the reflecting plate according to an embodiment of the present invention.
4 and 5, the
The
The
In this case, a light emitting diode (LED) may be used as the
As shown in FIG. 4, the
As illustrated in FIG. 4, a plurality of
As shown in FIG. 5, the rising part of the reflecting
In another embodiment, the rising portion of the
The
The
In addition, since the
6 is a cross-sectional view of a reflector according to another embodiment of the present invention.
Hereinafter, with reference to Figure 6 will be described a reflecting plate according to another embodiment of the present invention.
In the embodiment shown in FIG. 6, the
The
In this case, as shown in FIG. 6, the
The rising part of the reflecting
In this case, in the embodiment of FIG. 6, the
When the
However, when the
In addition, the
Meanwhile, in the embodiment of FIG. 6, the rising part of the reflecting
In addition, as in the embodiment illustrated in FIG. 5, an
7 to 9 are views for explaining a method of arranging a light source according to another embodiment of the present invention.
The
In this case, the
The plurality of
In this case, as illustrated in FIG. 7, the
In another embodiment, as shown in FIG. 8, a first LED emitting light to first ends of both ends of the
In addition, in another embodiment, as shown in FIG. 9, the LEDs that emit light only in the cross section may be configured to form a pair, and may be configured to emit light to both ends of the
In the foregoing detailed description of the present invention, specific examples have been described. However, various modifications are possible within the scope of the present invention. The technical spirit of the present invention should not be limited to the above-described embodiments of the present invention, but should be determined by the claims and equivalents thereof.
400: reflector
410: support member
420: Light source
430: optical sheet
440: reflector
445: reflective member
Claims (13)
A reflection unit having the light source disposed at a center portion and having a rising portion rising from both ends at the center of the light source; And
A reflection member provided on the reflection part;
Reflector configured to include.
A support member provided on the reflector to which the light source is attached;
Reflector comprising more.
Wherein the reflective member comprises:
A reflecting plate, the reflecting plate is configured to reflect light from the light source to the top of the support member.
Wherein the reflective member comprises:
A reflector plate having a pair of first reflecting members and a second reflecting member, wherein the first reflecting member and the second reflecting member are disposed at the same distance around the light source.
The rising portion,
Reflecting plate is formed to have a rising curvature toward both ends of the reflecting portion from the center of the light source is disposed.
The reflector includes:
A reflector plate that gradually increases in thickness from the center of the light source is disposed to both ends of the reflector.
The light source includes:
Reflector plate provided in a plurality in a row at the center of the reflector.
The light source includes:
First LEDs emitting light to first ends of both ends of the reflector; And
Second LEDs emitting light to second ends of both ends of the reflector;
Reflector comprising a.
The first LED and the second LED,
Alternating reflectors arranged in a row.
The light source includes:
Reflector consisting of a double-sided LED for emitting light to both ends of the reflector.
A reflector plate which emits light to both ends of the reflector in a pair of cross-sectional LED for emitting light to the cross-section.
An optical sheet disposed on the reflective plate;
A backlight unit further comprising.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020120112960A KR20140046817A (en) | 2012-10-11 | 2012-10-11 | Reflector plate and backlight unit including the plate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020120112960A KR20140046817A (en) | 2012-10-11 | 2012-10-11 | Reflector plate and backlight unit including the plate |
Publications (1)
Publication Number | Publication Date |
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KR20140046817A true KR20140046817A (en) | 2014-04-21 |
Family
ID=50653664
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020120112960A KR20140046817A (en) | 2012-10-11 | 2012-10-11 | Reflector plate and backlight unit including the plate |
Country Status (1)
Country | Link |
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KR (1) | KR20140046817A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20160016020A (en) * | 2014-08-01 | 2016-02-15 | 엘지디스플레이 주식회사 | Reflector for uniform brightness and liquid crystal display device having thereof |
KR101677860B1 (en) * | 2015-09-17 | 2016-11-21 | 희성전자 주식회사 | Backlight unit |
-
2012
- 2012-10-11 KR KR1020120112960A patent/KR20140046817A/en not_active Application Discontinuation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20160016020A (en) * | 2014-08-01 | 2016-02-15 | 엘지디스플레이 주식회사 | Reflector for uniform brightness and liquid crystal display device having thereof |
KR101677860B1 (en) * | 2015-09-17 | 2016-11-21 | 희성전자 주식회사 | Backlight unit |
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