KR101721663B1 - Guide panel assembly and assembling method of backlight unit using the same - Google Patents
Guide panel assembly and assembling method of backlight unit using the same Download PDFInfo
- Publication number
- KR101721663B1 KR101721663B1 KR1020150146299A KR20150146299A KR101721663B1 KR 101721663 B1 KR101721663 B1 KR 101721663B1 KR 1020150146299 A KR1020150146299 A KR 1020150146299A KR 20150146299 A KR20150146299 A KR 20150146299A KR 101721663 B1 KR101721663 B1 KR 101721663B1
- Authority
- KR
- South Korea
- Prior art keywords
- fastening
- guide panel
- guide plate
- light guide
- optical sheet
- Prior art date
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Classifications
-
- 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
-
- 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
- G02F1/133524—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
- G02F2203/00—Function characteristic
- G02F2203/02—Function characteristic reflective
Abstract
The present invention relates to a guide panel assembly for improving a fastening structure between an optical sheet and a light guide plate to simplify an assembling process of each component while improving optical characteristics, and a method for assembling a backlight device using the guide panel assembly. The guide panel assembly has a rectangular frame shape composed of a horizontal part and a vertical part bent outwardly at an outer end of the horizontal part and having a locking rib projecting downward from the horizontal part while being spaced apart from the vertical part by a predetermined distance A guide panel; An optical sheet having a fastening hole at an edge of a position corresponding to the fastening rib and fastened to an inner surface of the guide panel so that the fastening rib is inserted into the fastening hole; And a light guide plate which is fastened to the inner surface of the guide panel while covering the optical sheet so that the fastening rib is inserted into the fastening hole, the fastening hole being formed at the edge of the position corresponding to the fastening rib.
Description
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backlight unit, and more particularly, to a guide panel assembly that improves the fastening structure between an optical sheet and a light guide plate to simplify an assembling process of each component while improving optical characteristics, .
Unlike other display devices, a liquid crystal display (LCD) device, which is a flat display device, can not emit light itself, and therefore an external light source is necessarily required to realize an image . Therefore, the LCD further includes a backlight unit as an external light source in addition to the liquid crystal panel, and the backlight unit uniformly supplies the high brightness light to the liquid crystal panel, thereby realizing a high-quality image.
Thus, the backlight device refers to a surface light source unit installed on the back surface of a liquid crystal panel in order to realize an image of a display device such as an LCD. As a light source of the backlight device, a light emitting diode (LED) is mainly used, and a direct lighting type or an edge lighting type backlight device Respectively. In the direct type backlight device, a point light source is disposed under the diffusion plate, and the light is directly illuminated to the liquid crystal panel through the diffusion plate. In the side light type backlight device, a point light source is disposed on the side of the light guide plate, It is a way to illuminate with light.
FIG. 1 is an exploded perspective view showing a conventional side-type backlight device, and FIG. 2 is an enlarged view showing an optical sheet fastening structure which is a main part of FIG.
1, the side-view backlight device includes a
Here, the
In the conventional backlight device 10, the
In addition, the conventional backlight device 10 is configured such that the
In addition, in the conventional backlight device, scratches due to the interference of the components on the
It is an object of the present invention to provide an assembling structure of a backlight device which can improve a fastening structure between a light guide plate and an optical sheet, simplify an assembling process and reduce a assembling time.
Another object of the present invention is to provide an assembling structure of a backlight device that can be easily separated and reassembled when a backlight unit is repaired, and minimizes the occurrence of foreign substances and scratches during a separation and reassembling process .
According to an aspect of the present invention, there is provided a guide panel assembly for a backlight unit, comprising: a rectangular frame having a horizontal portion and a vertical portion bent outwardly at an outer end of the horizontal portion, And a coupling rib protruding downward from the horizontal portion while being spaced apart from the coupling rib; An optical sheet having a fastening hole at an edge of a position corresponding to the fastening rib and fastened to an inner surface of the guide panel so that the fastening rib is inserted into the fastening hole; And a light guide plate which is fastened to the inner surface of the guide panel while covering the optical sheet so that the fastening rib is inserted into the fastening hole, the fastening hole being formed at the edge of the position corresponding to the fastening rib.
Here, the locking rib may include a latch portion having an end protruding in the lateral direction to prevent the optical sheet from separating from the light guide plate.
The guide panel assembly may further include a seat holder including a vertical coupling portion and a pressing portion extending in the horizontal direction at an end of the coupling portion, And is inserted into a fitting groove formed in a horizontal portion of the guide panel and is fastened.
According to another aspect of the present invention, there is provided a method of assembling a backlight device, the method comprising: (a) assembling a cover bottom module for fastening a reflective sheet and a light source to a cover bottom having a storage space therein; (b) a rectangular frame having a horizontal part and a vertical part bent outwardly at an outer end of the horizontal part, the horizontal part and the vertical part being spaced apart from the vertical part by a predetermined distance, A light guide plate is prepared by providing an optical sheet having a fastening hole at the edge of a position corresponding to the fastening rib and a light guide plate so that the fastening rib is inserted into the fastening hole, A guide panel assembly assembling step of sequentially fastening the guide panel to the inner surface of the guide panel; And (c) assembling the guide panel assembly assembled in the step (b) to the cover bottom in a state where the guide panel assembly is turned upside down.
The step (b) may include preparing a sheet holder including a vertical fastening portion and a horizontally extending pressing portion at an end of the fastening portion, and the fastening portion presses the fastening portion against the horizontal And a seat holder assembly step of inserting the seat holder into the guide groove formed in the guide groove.
In the present invention, the light guide plate and the optical sheet are fastened to the guide panel to form the guide panel and the module, so that the assembling process of the backlight device can be simplified and the assembling time can be shortened.
In addition, since the light guide plate and the optical sheet are separated and reassembled together with the guide panel when repairing the backlight unit, no foreign matter, scratch, or the like is issued and the product is not defective during the repairing process.
1 is an exploded perspective view showing a side-view backlight device according to a conventional technique,
Fig. 2 is an enlarged view showing an optical sheet fastening structure, which is a main part of Fig. 1,
3 is an exploded perspective view showing a side-view backlight device according to an embodiment of the present invention,
FIG. 4 is an assembled cross-sectional view showing an assembling structure of the backlight device of FIG. 3,
FIG. 5 is a process diagram illustrating a process of assembling a guide panel assembly according to an embodiment of the present invention, and FIG.
6 is a process diagram illustrating an assembling process of the backlight device according to the 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.
FIG. 3 is an exploded perspective view illustrating a side-type backlight device according to an embodiment of the present invention, and FIG. 4 is an assembled cross-sectional view illustrating an assembling structure of the backlight device of FIG.
3, the backlight device of the present invention includes a
Here, the
The
The
The
The
The
In particular, in the backlight device of the present invention, the
4, the
The
The
The
Further, the backlight device of the present invention is further provided with a
FIG. 5 is a process diagram illustrating a process of assembling a guide panel assembly according to an embodiment of the present invention, and FIG. 6 is a process diagram illustrating a process of assembling the backlight device according to an embodiment of the present invention. In the backlight assembly of the present invention, the guide panel assembly is assembled by fastening the
Referring to FIG. 5, a guide panel assembly is assembled by inserting a
Referring to FIG. 6, the backlight unit is assembled by preparing a
As described above, in the backlight device of the present invention, the light guide plate, the optical sheet, and the guide panel constitute an integral assembly and are fastened to the cover bottom, so that the backlight device can be easily assembled. Further, since the optical sheet and the light guide plate are separated at the time of detaching the guide panel for repairing the backlight unit, foreign matter is not interposed between the light guide plate and the optical sheet, thereby minimizing defects generated during the repair process.
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: cover bottom 120: vertical side wall
200: reflective sheet 300: LED light source
400: light guide plate 500: optical sheet
430, 530: fastening holes
600: Guide panel
610: horizontal part 620: vertical part
630: fastening rib 640: seat holder
Claims (5)
An optical sheet which is fastened to an inner surface of the guide panel so that the fastening rib is inserted into the fastening hole, the fastening hole being formed at the edge of the fastening rib;
A light guide plate which is fastened to the inner surface of the guide panel while covering the optical sheet so that the fastening rib is inserted into the fastening hole, the fastening hole being formed at the edge wing portion corresponding to the fastening rib; And
And the fastening portion is inserted and assembled into a fitting groove formed in a horizontal portion of the guide panel so that the pressing portion presses the blade portion of the light guide plate A sheet holder,
Wherein the light guide plate and the optical sheet are configured to fix the wings of the light guide plate to the guide panel while being pressed by the seat holder.
And a latching part having an end protruding in a lateral direction to prevent the optical sheet and the light guide plate from being separated from each other.
(b) separate from the step (a)
(b1) a guide panel including a horizontal part and a vertical part bent outwardly at an outer end of the horizontal part and having a rectangular frame shape and spaced apart from the vertical part by a predetermined distance and projecting downwardly from the horizontal part Preparing an optical sheet and a light guide plate having a fastening hole formed in an edge wing portion corresponding to the fastening rib and fastening the optical sheet and the light guide plate to the inner surface of the guide panel sequentially so that the fastening rib is inserted into the fastening hole; ; Wow,
(b2) a sheet holder comprising a vertical fastening portion and a horizontal pressing portion extending from an end of the fastening portion, and the fastening portion presses the wing portion of the light guide plate, Fixing the light guide plate and the optical sheet to the guide panel by inserting the sheet holder into the guide panel and inserting the sheet holder into the guide panel;
A guide panel assembly assembling step of assembling the guide panel assembly; And
(c) a cover bottom and a guide panel assembling step of fastening the cover bottom module of the step (a) and the guide panel assembly of the step (b).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020150146299A KR101721663B1 (en) | 2015-10-20 | 2015-10-20 | Guide panel assembly and assembling method of backlight unit using the same |
Applications Claiming Priority (1)
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KR1020150146299A KR101721663B1 (en) | 2015-10-20 | 2015-10-20 | Guide panel assembly and assembling method of backlight unit using the same |
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KR101721663B1 true KR101721663B1 (en) | 2017-03-31 |
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KR1020150146299A KR101721663B1 (en) | 2015-10-20 | 2015-10-20 | Guide panel assembly and assembling method of backlight unit using the same |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20180130628A (en) * | 2017-05-29 | 2018-12-10 | 희성전자 주식회사 | Backlight unit |
KR20200059004A (en) * | 2018-11-20 | 2020-05-28 | 삼성전자주식회사 | Display apparatus |
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KR20110064876A (en) * | 2009-12-09 | 2011-06-15 | 엘지디스플레이 주식회사 | Liquid crystal display device |
KR20130017868A (en) | 2011-08-12 | 2013-02-20 | 희성전자 주식회사 | Backlight unit assembling structure |
KR20130030361A (en) * | 2011-09-18 | 2013-03-27 | 엘지전자 주식회사 | Display apparatus |
KR20150092393A (en) * | 2014-02-03 | 2015-08-13 | 삼성디스플레이 주식회사 | Backlight unit and display device having the same |
KR101562360B1 (en) * | 2014-10-02 | 2015-10-22 | 희성전자 주식회사 | Backlight unit and Assembly Method of the Same |
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2015
- 2015-10-20 KR KR1020150146299A patent/KR101721663B1/en active IP Right Grant
Patent Citations (5)
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KR20110064876A (en) * | 2009-12-09 | 2011-06-15 | 엘지디스플레이 주식회사 | Liquid crystal display device |
KR20130017868A (en) | 2011-08-12 | 2013-02-20 | 희성전자 주식회사 | Backlight unit assembling structure |
KR20130030361A (en) * | 2011-09-18 | 2013-03-27 | 엘지전자 주식회사 | Display apparatus |
KR20150092393A (en) * | 2014-02-03 | 2015-08-13 | 삼성디스플레이 주식회사 | Backlight unit and display device having the same |
KR101562360B1 (en) * | 2014-10-02 | 2015-10-22 | 희성전자 주식회사 | Backlight unit and Assembly Method of the Same |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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KR20180130628A (en) * | 2017-05-29 | 2018-12-10 | 희성전자 주식회사 | Backlight unit |
KR102352404B1 (en) | 2017-05-29 | 2022-01-19 | 희성전자 주식회사 | Backlight unit |
KR20200059004A (en) * | 2018-11-20 | 2020-05-28 | 삼성전자주식회사 | Display apparatus |
WO2020105851A1 (en) * | 2018-11-20 | 2020-05-28 | Samsung Electronics Co., Ltd. | Display apparatus |
US11016393B2 (en) | 2018-11-20 | 2021-05-25 | Samsung Electronics Co., Ltd. | Display apparatus |
KR102593319B1 (en) * | 2018-11-20 | 2023-10-25 | 삼성전자주식회사 | Display apparatus |
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