WO2007035013A1 - Hole structure for fixing a sheet in backlight assembly - Google Patents

Hole structure for fixing a sheet in backlight assembly Download PDF

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Publication number
WO2007035013A1
WO2007035013A1 PCT/KR2005/003479 KR2005003479W WO2007035013A1 WO 2007035013 A1 WO2007035013 A1 WO 2007035013A1 KR 2005003479 W KR2005003479 W KR 2005003479W WO 2007035013 A1 WO2007035013 A1 WO 2007035013A1
Authority
WO
WIPO (PCT)
Prior art keywords
sheet
hole
forming
scrap
hole structure
Prior art date
Application number
PCT/KR2005/003479
Other languages
French (fr)
Inventor
Hyun-Ok Kim
Original Assignee
Heesung Electronics Ltd.
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 Heesung Electronics Ltd. filed Critical Heesung Electronics Ltd.
Publication of WO2007035013A1 publication Critical patent/WO2007035013A1/en

Links

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
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • 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
    • 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
    • G02F1/133608—Direct backlight including particular frames or supporting means
    • 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
    • G02F1/133605—Direct backlight including specially adapted reflectors
    • 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
    • G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses

Definitions

  • the present invention relates to a hole structure for fixing a sheet in a backlight assembly, and more particularly, to a hole structure for fixedly fitting a variety of sheets such as a prism sheet and the like around a support attached on a cover bottom of a backlight assembly.
  • LCD liquid crystal display
  • PDP plasma display panel
  • ELD electro luminescent display
  • VFD vacuum fluorescent display
  • the LCD is most widely used as a mobile flat display device as it has a variety of advantages in weight, thickness and power consumption.
  • the LCD includes a plurality of liquid crystal cells arranged in a matrix pattern and a plurality of control switches for switching video signals that are transmitted to the liquid crystal cells.
  • the liquid crystal of the LCD cannot emit light by itself, an external light source is required to realize an image. Therefore, the LCD further includes a liquid crystal panel and a backlight unit functioning as the external light source. As the backlight unit uniformly emits the light having a high brightness to the liquid crystal panel, a high quality image can be realized.
  • the backlight unit used as the light source of the LCD is classified into a direct-lighting type and an edge-lighting type according to the disposition of a lamp.
  • the lamp is disposed below a diffusing plate of the liquid crystal panel to directly diffuse the light emitted from the lamp.
  • the lamp is disposed on a side surface of a light guide plate and the light is incident on the side surface of the light guide plate to diffuse the light to an entire surface of the light guide plate.
  • the backlight unit includes a light source such as a cold cathode fluorescent lighting (CCFL), a light guide plate or a diffusing plate for converting the light emitted from the light source into surface light, a reflection plate disposed under the light source to reflect the light emitted from the light source upward, and a prism sheet and light diffusing sheet disposed on the light guide plate or diffusing plate to improve the uniformity and brightness of the light.
  • a light source such as a cold cathode fluorescent lighting (CCFL)
  • a light guide plate or a diffusing plate for converting the light emitted from the light source into surface light
  • a reflection plate disposed under the light source to reflect the light emitted from the light source upward
  • a prism sheet and light diffusing sheet disposed on the light guide plate or diffusing plate to improve the uniformity and brightness of the light.
  • a variety of sheets 10 such as a reflection plate 10a, a prism sheet 10b and a light diffusing sheet 10c are fixedly inserted around a plurality of supports 31 attached on a cover bottom 30. Therefore, a plurality of holes 11a corresponding to the supports 31 are formed on the sheets 10. The holes 11a are formed on edges of the sheets 10 in a process for forming the sheets 10.
  • a scrap sheet (see the reference numeral 20 of FIG. 2) that is not yet formed moves along a conveyer belt, in the course of which the holes 11a are formed by punching the scrap sheet using a press-punching tool.
  • hole portions 11 to be inserted around the supports 31 are formed on the edges of the sheets 10 to be completely independent from the scrap sheet 20.
  • the independent hole portions 11 have a problem that hole pieces 1 Ib that are cut away from the scrap sheet 20 to define the holes 11a during the press-punching process are not completely removed from the hole portions 11 when the formed sheet 10 is separated from the scrap sheet 20. Therefore, there is a need for an additional process for removing the hole pieces 1 Ib from the formed sheet 10.
  • the hole pieces 1 Ib may fall onto the conveyer belt or may be attached on another scrap sheet, another forming sheet, or the press-punching tool. This makes it difficult to form other sheets.
  • the present invention has been made in an effort to solve the above-described problems and it is therefore an object of the present invention to provide a hole structure that is formed on a sheet such as a reflection sheet, a prism sheet, a light diffusing sheet to be fixedly inserted around a support of a cover bottom, in which a hole piece is not completely separated from the sheet or does not stay in a sheet forming apparatus. That is, it is an object of the present invention to provide a hole structure that can improve the productivity and quality of sheets in a sheet forming process by allowing hole pieces to be separated from the forming sheet together with a scrap sheet by integrally forming hole portions with the scrap sheet.
  • the present invention provides a hole structure for fixing a forming sheet such as a reflection plate, a prism sheet, and a light diffusing sheet, which are manufactured from a scrap sheet through a pressing process, on a cover bottom of a backlight assembly, wherein the forming sheet is provided at an edge with a plurality of hole portions and the hole portions are integrally connected to the scrap sheet.
  • a forming sheet such as a reflection plate, a prism sheet, and a light diffusing sheet
  • the forming sheet is provided with a plurality of protruded portion extending from an edge of the forming sheet and the holes portion are formed on the respective protruded portion.
  • the hole portion is integrally connected to the scrap sheet, when the forming sheet 10 is separated from the scrap sheet 20, the hole piece is not attached on the forming sheet 10 but still connected to the scrap sheet. Therefore, there is no need for an addition process for removing the hole piece from the forming sheet. In addition, even when the hole piece is separated from the forming sheet, the hole piece 1 Ib does not fall onto the conveyer belt, does not damage the pressing tool, and is not attached on other forming sheet, thereby preventing the quality of the forming sheet from being deteriorated.
  • FIG. 1 is a perspective view of an example where a variety of sheets are stacked in a backlight assembly
  • FIG. 2 is a schematic view of a hole structure formed on a forming sheet according to the related art
  • FIG. 3 is a view of a hole structure formed on a forming sheet according to an embodiment of the present invention.
  • FIG. 4 is a view of a hole structure illustrate a state when a forming sheet is separated from a scrap sheet
  • FIGS. 5 and 6 are views of other examples of a hole structure according to the present invention.
  • FIGS. 7 and 8 are views of a variety of integral connection examples of a hole portion to a scrap sheet according to the present invention.
  • FIG. 3 is a view of a hole structure formed on a forming sheet according to an embodiment of the present invention. As shown in FIG. 3, the inventive hole structure, a portion of a hole portion 11 formed on an edge of a forming sheet 10 is connected to a scrap sheet 20.
  • the sheets 10 are formed from the scrap sheet 20 moving along a conveyer belt by pressing the scrap sheet 20 using a pressing tool.
  • the hole portions 11 are also formed on an edge of the forming sheet 10.
  • the forming sheets 10 such as the reflection plate, prism sheet and light diffusing sheet are fixedly fitted around the supports 31 as shown in FIG. 1.
  • the hole portion 11 is directly connected to the scrap sheet 20 through the forming sheet 10. That is, in the prior art, the hole portion (refer to 11 of FIG. 2) is independently formed from the scrap sheet 20. In the present invention, the hole portion is however integrally formed with the scrap sheet 20.
  • FIGS. 5 and 6 show other examples of a hole structure according to the present invention and FIGS. 7 and 8 show a variety of integral connection examples of a hole portion to a scrap sheet according to the present invention.
  • a plurality of protruded portions 12 are formed on the edge of the forming sheet 10 and the hole portions 11 are formed on the respective protruded portions 12.
  • the hole portion 11 may be formed in various shapes such as a circular shape (see FIG. 5) or a diamond shape (see FIG. 6).
  • the connection line of the hole portion 11 to the scrap sheet 20 may be bent in vertical and horizontal directions.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Planar Illumination Modules (AREA)

Abstract

There is provided a hole structure for fixing a forming sheet such as a reflection plate, a prism sheet, and a light diffusing sheet, which are manufactured from a scrap sheet through a pressing process, on a cover bottom of a backlight assembly, wherein the forming sheet is provided at an edge with a plurality of hole portions and the hole portions are integrally connected to the scrap sheet so that hole pieces removed from the hole portion can be separated together with the scrap sheet.

Description

Description
HOLE STRUCTURE FOR FIXING A SHEET IN BACKLIGHT
ASSEMBLY
Technical Field
[1] The present invention relates to a hole structure for fixing a sheet in a backlight assembly, and more particularly, to a hole structure for fixedly fitting a variety of sheets such as a prism sheet and the like around a support attached on a cover bottom of a backlight assembly.
[2]
Background Art
[3] In recent years, as an information technology has been developed, a variety of flat displays such as an liquid crystal display (LCD), a plasma display panel (PDP), an electro luminescent display (ELD), a vacuum fluorescent display (VFD), and the like have been developed and commercialized. Particularly, the LCD is most widely used as a mobile flat display device as it has a variety of advantages in weight, thickness and power consumption.
[4] Generally, the LCD includes a plurality of liquid crystal cells arranged in a matrix pattern and a plurality of control switches for switching video signals that are transmitted to the liquid crystal cells. However, the liquid crystal of the LCD cannot emit light by itself, an external light source is required to realize an image. Therefore, the LCD further includes a liquid crystal panel and a backlight unit functioning as the external light source. As the backlight unit uniformly emits the light having a high brightness to the liquid crystal panel, a high quality image can be realized.
[5] Generally, the backlight unit used as the light source of the LCD is classified into a direct-lighting type and an edge-lighting type according to the disposition of a lamp. In the former, the lamp is disposed below a diffusing plate of the liquid crystal panel to directly diffuse the light emitted from the lamp. In the latter, the lamp is disposed on a side surface of a light guide plate and the light is incident on the side surface of the light guide plate to diffuse the light to an entire surface of the light guide plate.
[6] That is, the backlight unit includes a light source such as a cold cathode fluorescent lighting (CCFL), a light guide plate or a diffusing plate for converting the light emitted from the light source into surface light, a reflection plate disposed under the light source to reflect the light emitted from the light source upward, and a prism sheet and light diffusing sheet disposed on the light guide plate or diffusing plate to improve the uniformity and brightness of the light.
[7] Referring to FIG. 1, a variety of sheets 10 such as a reflection plate 10a, a prism sheet 10b and a light diffusing sheet 10c are fixedly inserted around a plurality of supports 31 attached on a cover bottom 30. Therefore, a plurality of holes 11a corresponding to the supports 31 are formed on the sheets 10. The holes 11a are formed on edges of the sheets 10 in a process for forming the sheets 10.
[8] That is, in the process for forming the sheets 10, a scrap sheet (see the reference numeral 20 of FIG. 2) that is not yet formed moves along a conveyer belt, in the course of which the holes 11a are formed by punching the scrap sheet using a press-punching tool. In this case, as shown in FIG. 2, hole portions 11 to be inserted around the supports 31 are formed on the edges of the sheets 10 to be completely independent from the scrap sheet 20.
[9] The independent hole portions 11 have a problem that hole pieces 1 Ib that are cut away from the scrap sheet 20 to define the holes 11a during the press-punching process are not completely removed from the hole portions 11 when the formed sheet 10 is separated from the scrap sheet 20. Therefore, there is a need for an additional process for removing the hole pieces 1 Ib from the formed sheet 10.
[10] Furthermore, even when the hole pieces 1 Ib are removed from the formed sheet 10 after the formed sheet 10 is separated from the scrap sheet 20, the hole pieces 1 Ib may fall onto the conveyer belt or may be attached on another scrap sheet, another forming sheet, or the press-punching tool. This makes it difficult to form other sheets.
[11] As a result, in the hole structure that is completely separated from the scrap sheet, the hole pieces causes the deterioration of the productivity in the forming process as well as the quality of the formed sheets.
[12]
Disclosure of Invention
Technical Problem
[13] The present invention has been made in an effort to solve the above-described problems and it is therefore an object of the present invention to provide a hole structure that is formed on a sheet such as a reflection sheet, a prism sheet, a light diffusing sheet to be fixedly inserted around a support of a cover bottom, in which a hole piece is not completely separated from the sheet or does not stay in a sheet forming apparatus. That is, it is an object of the present invention to provide a hole structure that can improve the productivity and quality of sheets in a sheet forming process by allowing hole pieces to be separated from the forming sheet together with a scrap sheet by integrally forming hole portions with the scrap sheet.
[14]
Technical Solution
[15] To achieve the above object, the present invention provides a hole structure for fixing a forming sheet such as a reflection plate, a prism sheet, and a light diffusing sheet, which are manufactured from a scrap sheet through a pressing process, on a cover bottom of a backlight assembly, wherein the forming sheet is provided at an edge with a plurality of hole portions and the hole portions are integrally connected to the scrap sheet.
[16] The forming sheet is provided with a plurality of protruded portion extending from an edge of the forming sheet and the holes portion are formed on the respective protruded portion.
[17]
Advantageous Effects
[18] According to the inventive hole structure, since the hole portion is integrally connected to the scrap sheet, when the forming sheet 10 is separated from the scrap sheet 20, the hole piece is not attached on the forming sheet 10 but still connected to the scrap sheet. Therefore, there is no need for an addition process for removing the hole piece from the forming sheet. In addition, even when the hole piece is separated from the forming sheet, the hole piece 1 Ib does not fall onto the conveyer belt, does not damage the pressing tool, and is not attached on other forming sheet, thereby preventing the quality of the forming sheet from being deteriorated.
[19] Therefore, in the process for forming a variety of sheets such as a reflection plate, a prism sheet and a light diffusing sheet, many problems caused by the hole pieces can be avoided, thereby improving the productivity and quality of the forming sheets and increasing the service life of the pressing tool.
[20]
Brief Description of the Drawings
[21] FIG. 1 is a perspective view of an example where a variety of sheets are stacked in a backlight assembly;
[22] FIG. 2 is a schematic view of a hole structure formed on a forming sheet according to the related art;
[23] FIG. 3 is a view of a hole structure formed on a forming sheet according to an embodiment of the present invention;
[24] FIG. 4 is a view of a hole structure illustrate a state when a forming sheet is separated from a scrap sheet;
[25] FIGS. 5 and 6 are views of other examples of a hole structure according to the present invention; and
[26] FIGS. 7 and 8 are views of a variety of integral connection examples of a hole portion to a scrap sheet according to the present invention.
[27] Best Mode for Carrying Out the Invention
[28] The present invention will now be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown.
[29] FIG. 3 is a view of a hole structure formed on a forming sheet according to an embodiment of the present invention. As shown in FIG. 3, the inventive hole structure, a portion of a hole portion 11 formed on an edge of a forming sheet 10 is connected to a scrap sheet 20.
[30] Describing in more detail, in a process for forming a variety of forming sheets 10 such as a reflection plate 10a, a prism sheet 10b and a light diffusing sheet 10c (refer to FIG. 1), the sheets 10 are formed from the scrap sheet 20 moving along a conveyer belt by pressing the scrap sheet 20 using a pressing tool. In this forming process, the hole portions 11 are also formed on an edge of the forming sheet 10. By holes (refer to 1 Ia of FIG. 4) formed on the edge of the forming sheet 10, the forming sheets 10 such as the reflection plate, prism sheet and light diffusing sheet are fixedly fitted around the supports 31 as shown in FIG. 1.
[31] Particularly, in the inventive hole structure, as shown in FIG. 3, the hole portion 11 is directly connected to the scrap sheet 20 through the forming sheet 10. That is, in the prior art, the hole portion (refer to 11 of FIG. 2) is independently formed from the scrap sheet 20. In the present invention, the hole portion is however integrally formed with the scrap sheet 20.
[32] By the inventive hole structure, as shown in FIG. 4, when the forming sheet 10 is separated from the scrap sheet 20, a hole piece 1 Ib of the hole portion 11, which is connected to the scrap sheet 20, is also separated from the forming sheet 10 to form a hole 1 Ia. In this case, the hole piece 1 Ib is still connected to the scrap sheet 20, it does not fall onto the conveyer belt.
[33] Therefore, when the forming sheet 10 is separated from the scrap sheet 20, the hole piece 1 Ib is not attached on the forming sheet 10 but still connected to the scrap sheet 20. Therefore, there is no need for an addition process for removing the hole piece 1 Ib from the forming sheet 10. In addition, even when the hole piece 1 Ib is separated from the forming sheet 10, the hole piece 1 Ib does not fall onto the conveyer belt, does not damage the pressing tool, and is not attached on other forming sheet, thereby preventing the quality of the forming sheet from being deteriorated.
[34] FIGS. 5 and 6 show other examples of a hole structure according to the present invention and FIGS. 7 and 8 show a variety of integral connection examples of a hole portion to a scrap sheet according to the present invention.
[35] Referring first to FIG. 5, a plurality of protruded portions 12 are formed on the edge of the forming sheet 10 and the hole portions 11 are formed on the respective protruded portions 12. The hole portion 11 may be formed in various shapes such as a circular shape (see FIG. 5) or a diamond shape (see FIG. 6).
[36] Also, the hole portion 11 formed on the protruded portion 12 of the forming sheet
10 may be vertically connected to the scrap sheet 20 with respect to a rectangular edge line of the forming sheet 10 (see FIGS. 5 and 6). Alternatively, the hole portion 11 may be horizontally connected to the scrap sheet 20 with respect to the rectangular edge line of the forming sheet 10. Alternatively, the connection line of the hole portion 11 to the scrap sheet 20 may be bent in vertical and horizontal directions.
[37] While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims.
[38]
[39]

Claims

Claims
[1] A hole structure for fixing a forming sheet such as a reflection plate, a prism sheet, and a light diffusing sheet, which are manufactured from a scrap sheet through a pressing process, on a cover bottom of a backlight assembly, wherein the forming sheet is provided at an edge with a plurality of hole portions and the hole portions are integrally connected to the scrap sheet.
[2] The hole structure of claim 1, wherein the hole portion is formed in a circular or diamond shape.
[3] The hole structure of claim 1 or 2, the forming sheet is provided with a plurality of protruded portion extending from an edge of the forming sheet and the holes portion are formed on the respective protruded portion.
[4] The hole structure of claim 3, wherein the hole portions are integrally connected to the scrap sheet in a vertical or horizontal direction with respect to an edge line of the forming sheet.
PCT/KR2005/003479 2005-09-22 2005-10-19 Hole structure for fixing a sheet in backlight assembly WO2007035013A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020050088094A KR20070033665A (en) 2005-09-22 2005-09-22 Hole structure formed to fix various sheets in the backlight assembly
KR10-2005-0088094 2005-09-22

Publications (1)

Publication Number Publication Date
WO2007035013A1 true WO2007035013A1 (en) 2007-03-29

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WO (1) WO2007035013A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8462291B2 (en) 2009-12-18 2013-06-11 Au Optronics Corporation Backlight module with film positioning function and display device using the same
CN109471287A (en) * 2018-12-27 2019-03-15 厦门天马微电子有限公司 Display module and display device
EP4086507A4 (en) * 2020-10-16 2023-08-16 Guangzhou Shiyuan Electronics Co., Ltd. Reflector and backlight having same

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101406128B1 (en) * 2013-04-09 2014-06-12 호남시트주식회사 Sheet attachment methods of the object for automotive interior

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KR20010045036A (en) * 1999-11-02 2001-06-05 윤종용 Backlight assembly
KR20010048850A (en) * 1999-11-30 2001-06-15 윤종용 Fixing guide for optical sheet of backlight assemble
JP2002196312A (en) * 2000-12-25 2002-07-12 Hitachi Ltd Liquid crystal display device
KR20040012195A (en) * 2002-08-01 2004-02-11 비오이 하이디스 테크놀로지 주식회사 Back light unit of liquid crystal display

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010045036A (en) * 1999-11-02 2001-06-05 윤종용 Backlight assembly
KR20010048850A (en) * 1999-11-30 2001-06-15 윤종용 Fixing guide for optical sheet of backlight assemble
JP2002196312A (en) * 2000-12-25 2002-07-12 Hitachi Ltd Liquid crystal display device
KR20040012195A (en) * 2002-08-01 2004-02-11 비오이 하이디스 테크놀로지 주식회사 Back light unit of liquid crystal display

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8462291B2 (en) 2009-12-18 2013-06-11 Au Optronics Corporation Backlight module with film positioning function and display device using the same
CN109471287A (en) * 2018-12-27 2019-03-15 厦门天马微电子有限公司 Display module and display device
CN109471287B (en) * 2018-12-27 2021-07-16 厦门天马微电子有限公司 Display module and display device
EP4086507A4 (en) * 2020-10-16 2023-08-16 Guangzhou Shiyuan Electronics Co., Ltd. Reflector and backlight having same
AU2020471932B2 (en) * 2020-10-16 2024-01-11 Guangzhou Shirui Electronics Co., Ltd. Reflector and backlight having same

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