KR100661151B1 - Fixing guide for optical sheet of backlight assemble - Google Patents

Fixing guide for optical sheet of backlight assemble Download PDF

Info

Publication number
KR100661151B1
KR100661151B1 KR1019990053682A KR19990053682A KR100661151B1 KR 100661151 B1 KR100661151 B1 KR 100661151B1 KR 1019990053682 A KR1019990053682 A KR 1019990053682A KR 19990053682 A KR19990053682 A KR 19990053682A KR 100661151 B1 KR100661151 B1 KR 100661151B1
Authority
KR
South Korea
Prior art keywords
fixing
optical sheet
boss
fixing groove
groove
Prior art date
Application number
KR1019990053682A
Other languages
Korean (ko)
Other versions
KR20010048850A (en
Inventor
이태진
Original Assignee
삼성전자주식회사
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 삼성전자주식회사 filed Critical 삼성전자주식회사
Priority to KR1019990053682A priority Critical patent/KR100661151B1/en
Publication of KR20010048850A publication Critical patent/KR20010048850A/en
Application granted granted Critical
Publication of KR100661151B1 publication Critical patent/KR100661151B1/en

Links

Images

Classifications

    • 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
    • G02F1/133308LCD panel immediate support structure, e.g. front and back frame or bezel
    • 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
    • G02F1/133615Edge-illuminating devices, i.e. illuminating from the side
    • 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
    • G02F1/133308LCD panel immediate support structure, e.g. front and back frame or bezel
    • G02F2001/133322Mechanical guiding and alignment of LCD panel support components

Abstract

The present invention relates to a backlight assembly of a liquid crystal display module. The optical sheet fixing guide of the backlight assembly according to the present invention includes at least one fixing protrusion extending from an edge thereof, and a plurality of fixing holes formed at predetermined positions of the fixing protrusion. A fixing groove is formed to receive the optical sheets and the fixing projections of the optical sheets, and a boss is inserted into the fixing hole of the optical sheet in the fixing groove and grooves are formed along the circumferential direction on the outer circumferential surface thereof to fix the optical sheet fixing projections to the frame. The fixing guide having a coupling hole in which the elastic pieces are substantially separated in the state in which they are accommodated in the fixing groove is inserted into the boss to couple the elastic pieces and the groove to fix the optical sheets.
Accordingly, by improving the shape of the boss provided in the fixing groove of the mold frame and the coupling hole provided in the fixing guide coupled to the boss, it is possible to minimize manufacturing defects occurring during operation, and also improve workability and productivity.
Backlight, Optical Sheet, Mold Frame

Description

FIXING GUIDE FOR OPTICAL SHEET OF BACKLIGHT ASSEMBLE}

1 is an exploded perspective view showing a combination of a liquid crystal display according to the prior art.

Figure 2 is an exploded perspective view showing the coupling using the optical sheet fixing guide of the backlight assembly according to the prior art.

Figure 3 is an exploded perspective view showing the coupling using the optical sheet fixing guide of the backlight assembly according to the present invention.

Figure 4 is a cross-sectional view showing the coupling of the fixing guide and the boss according to the present invention.

<Explanation of symbols for the main parts of the drawings>

100: backlight assembly 10: mold frame

20: optical sheet 30: lamp

40: optical sheet 18: fixed guide

The present invention relates to a structure for fixing an optical sheet in a backlight assembly of a liquid crystal display module, and more particularly, to improve the coupling means of the optical sheet to improve the brightness of light to reduce manufacturing defects by the optical sheet, The optical sheet fixing guide of the backlight assembly to improve the assembly of the mold frame combined with the.

CRT (Cathode Ray tube), which is one of the display devices that are generally used, is used in various information devices including TVs, but due to its weight and size, it cannot actively respond to the demand for miniaturization and lightening of the product.

In order to replace the CRT, liquid crystal displays have been actively developed to realize miniaturization, light weight, and low power consumption, and in recent years, the liquid crystal display has been developed enough to perform a role as a flat panel display device. As it is used as a top computer and a general large TV, the demand for liquid crystal display devices is continuously increasing.

Since most of the liquid crystal display devices are light-receiving devices that display images by controlling the amount of light coming from the outside, a separate backlight assembly for irradiating light to the LCD panel is necessary.

As shown in FIG. 1, the backlight assembly 100 includes a lamp 31 for emitting light and a light guide plate 30 for guiding light, and a lower portion of the light guide plate 30 is emitted from the lamp 31. A reflecting plate 20 reflecting toward the light guide plate 30 is provided, and a diffusion sheet 40c for diffusing light reflected from the light guide plate 30 and a diffusion sheet diffused from the diffusion sheet 40c are disposed on the light guide plate 30. A plurality of optical sheets 40, such as a prism sheet 40b for converting light in a predetermined direction and a protective sheet 40a for protecting the diffusion sheet 40c and the prism sheet 40b, may be provided. ) Is combined.

Since the backlight assembly 100 configured as described above has a great influence on the quality of the liquid crystal display device, it is important to minimize the assembly tolerance and the flow of each member considering the coefficient of thermal expansion to improve reliability of the backlight assembly.

Here, the plurality of optical sheets 40 coupled to the mold frame 10 are not properly fixed to the mold frame 10 so that the optical sheets 40 are flown so that scratches may be caused by friction between the optical sheets 40. The optical sheets 40 are thermally expanded by heat generated or radiated from the lamp 31 to cause wrinkles in the optical sheets 40.

Therefore, as shown in FIG. 2, a rectangular fixing groove 12 is formed inside the mold frame 10 at a predetermined position of the mold frame 10, and a plurality of optical sheets are formed inside the fixing groove 12. 40 is provided with a boss 14 to which the flow is prevented and coupled.

Here, the optical sheet 40 coupled to the mold frame 10 provided with the fixing groove 12 and the boss 14 is provided with a coupling protrusion 12a inserted into the fixing groove 12 at a predetermined position on one side. A coupling hole 14a into which the boss 14 provided in the fixing groove 12 is inserted is formed in the center portion of the protrusion 12a to prevent the flow of the optical sheets 40.

At this time, the coupling hole 14a formed in the optical sheet 40 is formed larger than the outer diameter of the boss 14 provided in the fixing groove 12 and is free to thermal expansion and thermal contraction due to heat generated from the lamp 31.

Such, the optical sheet 40 is inserted into the fixing groove 12 and the boss 14 and then provided with a fixing hole 14b into which the boss 14 is inserted in the center to prevent the optical sheet 40 from being separated. And a fixing guide 18 to which the double-sided tape 16 is attached to the lower portion of which the other side extends larger than the fixing groove 12, is coupled to the boss 14 so that both sides of the fixing groove 12 are double-sided tape 16. It is fixed by adhesive.

However, when fixing a plurality of optical sheets using a double-sided tape, a portion of the double-sided tape is attached to the optical sheet located on the uppermost side to limit thermal expansion and thermal contraction of the optical sheet, thereby causing wrinkles in the optical sheet.

In addition, in fixing the fixing guide, the operator has to remove the adhesive protective paper of the double-sided tape and then fixed to the mold frame, so that the assembly process is disadvantageous, such as increasing the squeezing process, thereby deteriorating workability and productivity.

The present invention has been made to solve this problem, to improve the shape of the boss provided in the fixing groove of the mold frame and the fixing hole provided in the seat guide coupled to the boss to minimize the manufacturing defects occurring during the work, and also the workability The purpose is to improve productivity.

The present invention for achieving the above object is a plurality of optical sheets formed by extending at least one fixing projection from the edge, the fixing hole is formed in a predetermined position of the fixing projection; A frame having a fixing groove for receiving the fixing protrusions of the optical sheets and having a boss inserted into the fixing hole of the optical sheet in the fixing groove; A liquid crystal display module having a fixing guide for fixing the optical sheet in a state where the fixing projections of the optical sheet are accommodated in the fixing groove, wherein the plurality of fixing holes are substantially separated from the coupling hole and the edge of the coupling hole. Elastic pieces are formed, and grooves are formed along the circumferential direction on the outer circumferential surface of the boss, and the elastic pieces are inserted into the grooves to fix the optical sheets.

On the other hand, the elastic pieces are preferably formed by forming a plurality of slits along the edge of the coupling hole.

Hereinafter, the optical sheet fixing guide of the liquid crystal display module according to the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 3, the backlight assembly is fastened to a lower portion of the mold frame 10 and a mold frame 10 having a rectangular accommodating space formed through the upper surface to the lower surface of the mold frame 10. A bottom chassis (not shown) for closing the light, a reflector (not shown) installed on the bottom surface of the bottom chassis to reflect light, a light guide plate 20 installed on the upper portion of the reflector to guide the light to the display unit, the light guide plate 20 It includes a lamp unit (not shown) installed on the side and a plurality of optical sheets 40 installed on the upper surface of the light guide plate 20 to improve the brightness of the light transmitted from the light guide plate 20.

Here, a plurality of fixing grooves 12 are provided at a predetermined position inside the mold frame 10, and a boss 14 having grooves 14b formed along a circumferential surface at an intermediate portion at a predetermined position of the fixing groove 12. ) Is provided, and a plurality of fixing protrusions 12a inserted into the fixing grooves 12 provided in the mold frame 10 are provided at predetermined positions on the outer surface of the plurality of optical sheets 40, and predetermined portions of the fixing protrusions 12a are provided. The position is provided with a fixing hole 14a inserted into the boss 14 provided in the fixing groove 12.

In addition, in order to prevent the optical sheet 40 from being separated after the plurality of optical sheets 40 are coupled, a coupling hole 15a formed smaller than the outer diameter of the boss 14 is provided in the center portion, and the coupling hole 15a is provided in the coupling hole 15a. It is provided with elastic pieces 15b divided into a plurality of slits 15c, and a fixing guide 15 having one side and the other side extending larger than the fixing groove 12 is provided.

Accordingly, the operation of the optical sheet fixing structure of the backlight assembly of the present invention is as follows.

As shown in FIG. 4, the fixing protrusion 12a and the fixing protrusion provided in the optical sheet 40 in the fixing groove 12 provided in the mold frame 10 and the boss 14 provided at a predetermined position in the fixing groove 12. A fixing hole 14a provided at a predetermined position of 12a is inserted into the boss 14 so that the fixing protrusion 15 of the optical sheet 40 is seated in the fixing groove 12.

Then, the coupling hole 15a of the fixing guide 15 in which the elastic piece 15b is formed above the fixing protrusion 12a inserted into the boss 14 is inserted into the boss 14 to the outer peripheral surface of the boss 14. A plurality of elastic pieces 15b formed in the coupling hole 15a are coupled to the groove 14b formed in the circumferential direction.

At this time, the plurality of elastic pieces 15b formed in the coupling hole 15a are bent in the direction opposite to the direction in which they are inserted into the boss 14 and support the groove 14b formed in the boss 14 with a predetermined elastic force. And combined.

Accordingly, the plurality of optical sheets are in close contact with the mold frame to the fixing guide coupled to the groove of the boss with the inertia force of the elastic piece on the upper side to prevent the separation.

As described above, the optical sheet fixing guide of the liquid crystal display module according to the present invention improves the shape of the boss provided in the fixing groove of the mold frame and the fixing hole provided in the sheet guide coupled to the boss, thereby minimizing manufacturing defects occurring during operation. It can also improve workability and productivity.

Claims (2)

  1. A plurality of optical sheets having at least one fixing protrusion extending from an edge and having fixing holes formed at predetermined positions of the fixing protrusion; A frame having a fixing groove for receiving the fixing protrusions of the optical sheets and having a boss inserted into the fixing hole of the optical sheet in the fixing groove; In the liquid crystal display module having a fixing guide for fixing the optical sheet in a state that the fixing projections of the optical sheet are accommodated in the fixing groove,
    Coupling holes are formed in the fixing guide to form a plurality of elastic pieces substantially separated at the edges of the coupling holes, grooves are formed along the circumferential direction on the outer circumferential surface of the boss so that the elastic pieces are inserted into the grooves. The optical sheet fixing guide of the liquid crystal display module, characterized in that for fixing the optical sheets.
  2. The optical sheet fixing guide of claim 1, wherein the elastic pieces are formed by forming a plurality of slits along edges of the coupling holes.
KR1019990053682A 1999-11-30 1999-11-30 Fixing guide for optical sheet of backlight assemble KR100661151B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019990053682A KR100661151B1 (en) 1999-11-30 1999-11-30 Fixing guide for optical sheet of backlight assemble

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019990053682A KR100661151B1 (en) 1999-11-30 1999-11-30 Fixing guide for optical sheet of backlight assemble

Publications (2)

Publication Number Publication Date
KR20010048850A KR20010048850A (en) 2001-06-15
KR100661151B1 true KR100661151B1 (en) 2006-12-26

Family

ID=19622582

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019990053682A KR100661151B1 (en) 1999-11-30 1999-11-30 Fixing guide for optical sheet of backlight assemble

Country Status (1)

Country Link
KR (1) KR100661151B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200453581Y1 (en) * 2009-03-02 2011-05-12 주식회사 디에스 fixing materials of optical sheets
CN102182989A (en) * 2011-04-21 2011-09-14 深圳市华星光电技术有限公司 Backlight module and fixing mechanism for same
US8388161B2 (en) 2011-04-21 2013-03-05 Shenzhen China Star Optoelectronics Technology Co., Ltd. Fixing mechanism for backlight module and backlight module
WO2014063346A1 (en) * 2012-10-24 2014-05-01 深圳市华星光电技术有限公司 Liquid crystal display device and backlight unit thereof

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003043484A (en) * 2001-08-03 2003-02-13 Fujitsu Ltd Liquid crystal display device
KR100840235B1 (en) * 2001-08-29 2008-06-20 삼성전자주식회사 Liquid crystal display device
KR100855492B1 (en) * 2001-12-24 2008-09-01 엘지디스플레이 주식회사 Liquid crystal display module
KR100855499B1 (en) * 2001-12-29 2008-09-01 엘지디스플레이 주식회사 Liquid Crystal Display
KR100889535B1 (en) * 2002-10-25 2009-03-23 엘지디스플레이 주식회사 Liquid Crystal Device Module
KR100942140B1 (en) * 2002-12-26 2010-02-16 엘지디스플레이 주식회사 Liquid Crystal Display Module And Assembling Method Thereof
KR100936821B1 (en) * 2002-12-27 2010-01-14 엘지디스플레이 주식회사 Liquid crystal display module and method for assembling thereof
CN100357801C (en) * 2003-05-14 2007-12-26 友达光电股份有限公司 Combined structure of optical model sheet and rubber frame
KR100698055B1 (en) 2003-12-23 2007-03-23 엘지.필립스 엘시디 주식회사 Liquid Crystal Display Device
KR100950860B1 (en) * 2003-12-24 2010-03-31 엘지디스플레이 주식회사 Lcd backlight assembly
KR101232045B1 (en) * 2005-08-24 2013-02-12 삼성디스플레이 주식회사 Back light assembly and liquid crystal display apparatus having the same
KR20070033665A (en) * 2005-09-22 2007-03-27 희성전자 주식회사 Hole structure formed to fix various sheets in the backlight assembly
KR101103944B1 (en) * 2010-02-03 2012-01-12 엘지이노텍 주식회사 Light emitting device package
KR101152844B1 (en) * 2010-12-14 2012-06-12 태산엘시디 주식회사 A lgp mounting structure of backlight unit

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200453581Y1 (en) * 2009-03-02 2011-05-12 주식회사 디에스 fixing materials of optical sheets
CN102182989A (en) * 2011-04-21 2011-09-14 深圳市华星光电技术有限公司 Backlight module and fixing mechanism for same
WO2012142775A1 (en) * 2011-04-21 2012-10-26 深圳市华星光电技术有限公司 Fixing mechanism for backlight module and backlight module
US8388161B2 (en) 2011-04-21 2013-03-05 Shenzhen China Star Optoelectronics Technology Co., Ltd. Fixing mechanism for backlight module and backlight module
DE112011105164B4 (en) * 2011-04-21 2019-02-07 Shenzhen China Star Optoelectronics Technology Co., Ltd. Mounting mechanism for backlight modules and backlight module
WO2014063346A1 (en) * 2012-10-24 2014-05-01 深圳市华星光电技术有限公司 Liquid crystal display device and backlight unit thereof

Also Published As

Publication number Publication date
KR20010048850A (en) 2001-06-15

Similar Documents

Publication Publication Date Title
US8794779B2 (en) Lighting device, display device and television receiver
US8045094B2 (en) Backlight device, display device, and television receiver
KR101698816B1 (en) Backlight assembly
TWI443421B (en) Backlight assembly and liquid crystal display device having the same
US8421971B2 (en) Liquid crystal display module and one-piece back plate thereof
TWI289227B (en) Liquid crystal display
EP1553440B1 (en) Liquid crystal display device
KR101203661B1 (en) Backlight assembly and liquid crystal display having the same
JP5888923B2 (en) Display device
KR100380769B1 (en) Backlight unit and display device using the same backlight unit
US7443460B2 (en) Backlight assembly for liquid crystal display and liquid crystal display module using the same
US8550665B2 (en) Backlight unit and display device including the same
US6834974B2 (en) Lamp assembly, backlight assembly and liquid crystal display apparatus having the same
KR100367011B1 (en) Liquid Crystal Display
US7309149B2 (en) Prism sheet, backlight assembly and liquid crystal display device having the same
KR100603850B1 (en) Fixing Unit of a Wavequide and Sheets of Backlight Device
US6046785A (en) Attachment structure of light guide to frame for liquid crystal display device
KR100640987B1 (en) backlight assembly of liquid crystal display module
US7724316B2 (en) Backlight device and display apparatus
US6811276B2 (en) Backlight device
JP4400161B2 (en) Liquid crystal display
US6580478B2 (en) Structure for preventing a wrinkle in a reflective sheet of a backlight unit
KR100779201B1 (en) Display Device
US8659720B2 (en) Backlight device and liquid crystal display
TW543016B (en) Liquid crystal display device

Legal Events

Date Code Title Description
A201 Request for examination
E801 Decision on dismissal of amendment
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20111214

Year of fee payment: 6

LAPS Lapse due to unpaid annual fee