WO2016169217A1 - Module de rétroéclairage et dispositif d'affichage à cristaux liquides - Google Patents

Module de rétroéclairage et dispositif d'affichage à cristaux liquides Download PDF

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Publication number
WO2016169217A1
WO2016169217A1 PCT/CN2015/091305 CN2015091305W WO2016169217A1 WO 2016169217 A1 WO2016169217 A1 WO 2016169217A1 CN 2015091305 W CN2015091305 W CN 2015091305W WO 2016169217 A1 WO2016169217 A1 WO 2016169217A1
Authority
WO
WIPO (PCT)
Prior art keywords
quantum dot
fixing
backlight module
substrate
fixing bracket
Prior art date
Application number
PCT/CN2015/091305
Other languages
English (en)
Chinese (zh)
Inventor
柴佐
Original Assignee
深圳Tcl新技术有限公司
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 深圳Tcl新技术有限公司 filed Critical 深圳Tcl新技术有限公司
Publication of WO2016169217A1 publication Critical patent/WO2016169217A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a backlight module and a liquid crystal display device having the same.
  • the backlight module of a common liquid crystal display device generally uses a white LED as a backlight, and then obtains a rich color display through a color filter and a photoresist of the liquid crystal screen.
  • the display color gamut of the liquid crystal display device can generally reach NTSC ((US) National Television Standards Committee) is about 72%.
  • NTSC National Television Standards Committee
  • a main object of the present invention is to provide a backlight module and a liquid crystal display device having the same, which aims to improve the display color gamut of the liquid crystal display device having the backlight module.
  • the present invention provides a backlight module including an LED light bar, a quantum dot package tube, a light guide plate, a back plate and a fixing bracket, the LED light bar comprising a substrate and a plurality of LEDs fixed on the substrate a lamp, the substrate is fixed to the back plate, and the fixing bracket is connected to the substrate or the back plate, the fixing bracket includes a fixing portion for fixing the quantum dot package tube and a bearing body In the support portion of the light guide plate, the quantum dot package tube is fixed at a position facing the LED lamp by the fixing portion, and a light incident surface of the light guide plate faces the quantum dot package tube.
  • the fixing portion is provided with a receiving groove for inserting and fixing the quantum dot sealing tube; and on the side groove wall of the receiving groove adjacent to the LED light bar, the fixing bracket is opened for the LED a plurality of first through holes through which the lamps pass; on the side groove walls of the receiving groove away from the LED light bar, the fixing brackets are provided with a first opening through which light emitted by the LED lamps passes.
  • the fixing bracket is provided at the first opening for limiting a first limiting portion of the quantum dot sealing tube from the receiving slot in a direction away from the LED light bar, the fixing bracket further A second limiting portion for restricting movement of the quantum dot package tube toward the LED light bar is disposed in the receiving groove.
  • the quantum dot package tube is spaced apart from the LED lamp.
  • a portion of the fixing portion adjacent to the back plate extends in a direction away from the LED light bar to form the support portion.
  • a plurality of positioning buckles are protruded from the side of the backing plate of the substrate toward the backing plate, and the plurality of positioning buckles are inserted into the backing plate to be fixed with the backing plate.
  • the backlight module further includes a protective sleeve adjacent to either end or both ends of the fixing bracket, and the protective sleeve is connected to the substrate.
  • the protective sleeve has a protection groove for receiving a secondary sealing end of the quantum dot sealing tube, and one end of the protection groove is adjacent to a fixing portion of the fixing bracket, and the protection groove is away from One end of the fixing bracket is sealed.
  • the present invention further provides a liquid crystal display device including a backlight module, the backlight module including an LED light bar, a quantum dot package tube, a light guide plate, a back plate and a fixing bracket, the LED lamp
  • the strip includes a substrate and a plurality of LED lamps fixed on the substrate, the substrate being fixed to the back plate, the fixing bracket being connected to the substrate or the back plate, the fixing bracket comprising a fixing installation a fixing portion of the quantum dot package tube and a support portion for carrying the light guide plate, wherein the quantum dot package tube is fixed at a position facing the LED lamp by the fixing portion, and a light incident surface of the light guide plate faces The quantum dot encapsulated tube.
  • the fixing portion is provided with a receiving groove for inserting and fixing the quantum dot sealing tube; and on the side groove wall of the receiving groove adjacent to the LED light bar, the fixing bracket is opened for the LED a plurality of first through holes through which the lamps pass; on the side groove walls of the receiving groove away from the LED light bar, the fixing brackets are provided with a first opening through which light emitted by the LED lamps passes.
  • the fixing bracket is provided at the first opening for limiting a first limiting portion of the quantum dot sealing tube from the receiving slot in a direction away from the LED light bar, the fixing bracket further A second limiting portion for restricting movement of the quantum dot package tube toward the LED light bar is disposed in the receiving groove.
  • the quantum dot package tube is spaced apart from the LED lamp.
  • a portion of the fixing portion adjacent to the back plate extends in a direction away from the LED light bar to form the support portion.
  • a plurality of positioning buckles are protruded from the side of the backing plate of the substrate toward the backing plate, and the plurality of positioning buckles are inserted into the backing plate to be fixed with the backing plate.
  • the backlight module further includes a protective sleeve adjacent to either end or both ends of the fixing bracket, and the protective sleeve is connected to the substrate.
  • the protective sleeve has a protection groove for receiving a secondary sealing end of the quantum dot sealing tube, and one end of the protection groove is adjacent to a fixing portion of the fixing bracket, and the protection groove is away from One end of the fixing bracket is sealed.
  • the substrate protrudes from the primary sealing end of the quantum dot package tube in a direction along the length of the substrate.
  • the backlight module provided by the invention is fixed by the substrate and the back plate, and fixes the quantum dot sealing tube directly in front of the LED lamp through the fixing portion of the fixing bracket, and stably supports the light guiding plate on the quantum dot through the supporting portion of the fixing bracket.
  • the front side of the encapsulation tube is such that the mixed white light obtained after the blue LED lamp excites the quantum dot encapsulation tube can enter the light guide plate from the light incident surface to provide backlight for the liquid crystal display device having the backlight module, and the manner provided by the method Compared with the backlight provided by the conventional white LED lamp, the white backlight can improve the color saturation of the liquid crystal, thereby improving the display color gamut of the liquid crystal display device having the backlight module.
  • the white light backlight provided by the method can The display color gamut of the liquid crystal display device is increased by about 30% to about 110% of NTSC.
  • FIG. 1 is a schematic structural view of an embodiment of a backlight module of the present invention
  • Figure 2 is an enlarged schematic view of the portion II of Figure 1;
  • FIG. 3 is a schematic cross-sectional structural view of the backlight module of FIG. 1;
  • FIG. 4 is a schematic structural view of a primary sealing end of a quantum dot package tube of the backlight module of FIG. 1 and an LED light bar;
  • FIG. 5 is a schematic structural view of a secondary sealing end of a quantum dot package tube of the backlight module of FIG. 1 and an LED light bar and a light guide plate.
  • the invention provides a backlight module.
  • the backlight module includes an LED light bar 10, a quantum dot package tube 20, a light guide plate 40, a back plate (not shown), and a fixing bracket 30, wherein the LED light bar 10 includes a substrate 11 and a plurality of LED lamps 12 fixed to the substrate 11, the substrate 11 being fixed to the backing plate.
  • the fixing bracket 30 is connected to the substrate 11 or the backboard, that is, the fixing bracket 30 can be connected to the substrate 11, or the fixing bracket 30 can also be connected to the backboard.
  • the fixing portion 31 of the fixing bracket 30 is fixedly coupled to the substrate 11.
  • the fixing bracket 30 includes a fixing portion 31 for fixing the quantum dot package tube 20 and a supporting portion 32 for carrying the light guide plate 40, and the quantum dot sealing tube 20 is fixed at a position facing the LED lamp 12 by the fixing portion 31 of the fixing bracket 30.
  • the light incident surface 41 of the light guide plate 40 faces the quantum dot package tube 20.
  • at least a portion of the quantum dot package tube 20 faces the LED lamp 12, and at least a portion of the quantum dot package tube 20 faces the light incident surface 41 of the light guide plate 40.
  • the light emitted by the LED lamp 12 on the LED strip 10 can enter the light guide plate 40 via the quantum dot encapsulation tube 20.
  • the LED lamp 12 is a blue LED lamp
  • the substrate 11 has an elongated shape, and a plurality of blue LED lamps are evenly spaced along the length direction of the substrate 11 on the substrate 11
  • the quantum dot package tube 20 is internally packaged to be excited a glass tube of quantum dots of red light and green light, and the axial direction of the quantum dot package tube 20 is parallel to the length extension direction of the substrate 11, and the quantum dot package tube 20 has a primary sealing end 21 and a secondary seal which are opposed in the axial direction thereof.
  • the blue light emitted by the LED lamp 12 on the LED strip 10 passes through the quantum dot encapsulation tube 20 and is mixed with the excited red and green light to obtain white light to provide backlight for the liquid crystal display device having the backlight module;
  • the portion of the fixing portion 31 near the back plate extends in a direction away from the LED light bar 10 to form a support portion 32 of the fixing bracket 30 for supporting the light guide plate 40 to improve the light guide plate.
  • the backlight module provided in this embodiment is fixed to the back plate by the substrate 11 and fixes the quantum dot package tube 20 directly in front of the LED lamp 12 through the fixing portion 31 of the fixing bracket 30, and through the support portion 32 of the fixing bracket 30.
  • the light guide plate 40 is stably carried in front of the quantum dot package tube 20, so that the mixed white light energy obtained after the blue LED lamp 12 excites the quantum dot package tube 20 enters the light guide plate 40 from the light incident surface 41 to have the backlight mode.
  • the liquid crystal display device of the group provides backlight, and the white backlight provided by the method can improve the color saturation of the liquid crystal compared with the backlight provided by the conventional white LED lamp, thereby improving the display color of the liquid crystal display device having the backlight module.
  • the field, in particular, the white light backlight provided by this method can increase the display color gamut of the liquid crystal display device by about 30% to about 110% of NTSC.
  • the fixing portion 31 of the fixing bracket 30 is provided with a receiving groove 311 for inserting and fixing the quantum dot sealing tube 20.
  • the fixing bracket 31 On the side groove wall of the receiving groove 311 near the LED light bar 10, the fixing bracket 31 is provided with a plurality of first through holes 312 through which the LED lamps 12 pass.
  • the fixing bracket 31 On the side groove wall of the receiving groove 311 away from the LED light bar 12, the fixing bracket 31 is further provided with a first opening 313 through which the light emitted by the LED lamp 12 passes. The light emitted by the LED lamp 12 on the LED strip 10 passes through the quantum dot encapsulation tube 20 and the first opening 313 in the receiving groove 311 and enters the light guide plate 40.
  • each of the first through holes 312 faces an LED lamp 12, or a first through hole 312 faces a plurality of adjacent LED lamps 12, as long as the light emitted by each of the LED lamps 12 is ensured.
  • the first opening 313 can pass through the corresponding first through hole 312 and enter the receiving groove 311; and the length of the first opening 313 extends in a direction parallel to the axial direction of the quantum dot sealing tube 20.
  • the fixing bracket 30 is provided with a first limiting portion 314 for restricting the quantum dot sealing tube 20 from being away from the receiving slot 311 in a direction away from the LED light strip 10 at the first opening 313, and the fixing bracket 30 is fixed.
  • a second limiting portion 315 for restricting the movement of the quantum dot package tube 20 toward the LED light bar 10 is further disposed in the receiving groove 311 to achieve a stable relative distance between the quantum dot package tube 20 and the LED light bar 10.
  • the first limiting portion 314 is disposed at intervals along the length extending direction of the fixing bracket 30 , and each of the first limiting portions 314 is included from the first opening 313 .
  • the upper edge of the first opening 313 protrudes from the upper edge, and the lower edge of the first opening 313 protrudes from the lower edge of the first opening 313; similarly, the second limiting portion 315 also has A plurality of the second limiting portions 315 are spaced apart along the length extending direction of the fixing bracket 30 , and the second limiting portion 315 and the first limiting portion 314 are offset.
  • the quantum dot package tube 20 is spaced apart from the LED lamp 12 of the LED light bar 10, that is, there is a gap between the quantum dot package tube 20 and the LED lamp 12, and the light guide plate 40 is provided. There is also a gap between the light incident surface 41 and the quantum dot package tube 20.
  • the width D1 of the gap between the quantum dot package tube 20 and the LED lamp 12 is preferably 0.5 mm
  • the width D2 of the gap between the light incident surface 41 and the quantum dot package tube 20 is preferably 0.5 mm to 0.7 mm.
  • the substrate 11 protrudes from the primary sealing end 21 of the quantum dot package tube 20 in the direction along the length of the substrate 11, so that when more than two sets of the fixing bracket 30 and the quantum are required
  • the combination of the package tubes 20 is performed, the combination of the adjacent two sets of the fixing brackets 30 and the quantum dot sealing tubes 20 can be connected end to end, and the collision of the primary sealing end 21 of the quantum dot sealing tube 20 during the installation can be avoided. The phenomenon.
  • the length D4 of the inactive region of the primary sealing end 21 of the quantum dot package tube 20 is 2.0 mm to 2.5 mm, and the edge between the end surface of the primary sealing end 21 of the quantum dot sealing tube 20 and the corresponding end surface of the substrate 11 is along the substrate.
  • the distance D3 in the longitudinal direction is preferably 0.2 mm; the distance D5 in the longitudinal direction of the substrate 11 between the critical line of the ineffective region of the primary sealing end 21 close to the LED lamp 12 and the end face of the outermost LED lamp 12 is preferably 0.6.
  • the portion of the primary sealing end 21 facing the LED lamp 12 is an effective light-emitting area under the premise of ensuring manufacturing feasibility, thereby ensuring high luminous efficiency of the entire device.
  • the length D7 of the ineffective region of the secondary sealing end 22 of the quantum dot package tube 20 is 8 mm to 10 mm, and the edge between the end surface of the secondary sealing end 22 and the corresponding end surface of the substrate 11
  • the distance D6 in the longitudinal direction of the substrate 11 is preferably 0.5 mm to 1 mm, and the length of the ineffective region of the secondary sealing end 22 near the critical line of the LED lamp 12 and the side of the vertical substrate 11 of the light guide plate 40 is along the length of the substrate 11.
  • the distance D8 is preferably from 7 mm to 8 mm, so that all the white light energy provided by the entire device can enter the light guide plate 40 under the premise of ensuring manufacturing feasibility, thereby further ensuring high luminous efficiency of the entire device.
  • the backlight module further includes a protective cover 50 adjacent to either end or both ends of the fixing bracket 30 , and the protective cover 50 is connected to the substrate 11 .
  • the protective cover 50 is adjacent to the fixing portion 31 of the fixing bracket 30 and is fixed on the substrate 11 of the LED light bar 10 for receiving and fixing the secondary sealing end 22 of the quantum dot sealing tube 20.
  • the end portion of the substrate 11 corresponding to the secondary sealing end 22 has a socket 112 for electrical connection.
  • the protective cover 50 is fixed above the socket 112, and the fixing bracket 30 is difficult due to the presence of the socket 112. Extending to the position where the socket 112 is located, the secondary sealing end 22 of the quantum dot sealing tube 20 is not protected by the fixing bracket 30.
  • the quantum dot is prevented by providing a protective cover 50 for receiving the secondary sealing end 22.
  • the secondary sealing end 22 of the encapsulating tube 20 is exposed, and the secondary sealing end 22 is easy to be damaged during the assembly process of the backlight module.
  • the protective cover 50 has The protective groove 51 of the secondary sealing end 22 of the quantum dot sealing tube 20 is received, and one end of the protective groove 51 in the longitudinal direction is adjacent to the fixing portion 31 of the fixing bracket 30, and is used for inserting and fixing the secondary sealing end 22, the protection groove 51 is sealed at one end away from the fixing bracket 30; preferably, the protective sleeve 50 is further provided with a second opening 52 on the side groove wall of the protection groove 51 away from the LED light bar 10, so as to facilitate the secondary sealing end 22 and the protective sleeve Between 50 Matching the installation, but is not limited to this embodiment may be secured by glue bonding between the end 22 and the groove 51 to ensure the protection of the package tube mounting stability of the quantum dots 20, the secondary seal of the present embodiment.
  • the fixing portion 31 of the fixing bracket 30 and the substrate 11 of the LED light bar 10 are preferably adhered and fixed by the double-sided tape 60.
  • the double-sided tape 60 is provided with a plurality of LED lamps 12 for passing through.
  • the second through hole 61; similarly, the protective cover 50 and the substrate 11 of the LED light bar 10 are also preferably fixed by double-sided adhesive bonding.
  • the present invention also provides a liquid crystal display device.
  • the liquid crystal display device includes the backlight module in the foregoing embodiment.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)

Abstract

L'invention concerne un module de rétroéclairage comprenant une bande de lampes à LED (10), un tube d'emballage à boîte quantique (20), une plaque de guidage de lumière (40), un couvercle arrière et un support de fixation (30). La bande de lampes à LED (10) comprend un substrat (11) et une pluralité de lampes à LED (12) fixées sur le substrat. Le substrat (11) est fixé au couvercle arrière. Le support de fixation (30) est connecté au substrat (11) ou au couvercle arrière et comprend une partie de fixation (31) destinée au montage en position fixe du tube d'emballage à boîte quantique (20) et une partie support (32) destinée à supporter la plaque de guidage de lumière (40). Le tube d'emballage à boîte quantique (20) est fixé à une position faisant face aux lampes à LED (12) à travers la partie de fixation (31), et une surface d'incidence de la lumière (41) de la plaque de guidage de lumière (40) fait face au tube d'emballage à boîte quantique (20). L'invention concerne également un dispositif d'affichage à cristaux liquides. Le module de rétroéclairage peut améliorer la gamme de couleurs du dispositif d'affichage à cristaux liquides qui utilise le module de rétroéclairage.
PCT/CN2015/091305 2015-04-21 2015-09-30 Module de rétroéclairage et dispositif d'affichage à cristaux liquides WO2016169217A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201520244083.9 2015-04-21
CN201520244083.9U CN204554543U (zh) 2015-04-21 2015-04-21 背光模组及液晶显示装置

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WO2016169217A1 true WO2016169217A1 (fr) 2016-10-27

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WO (1) WO2016169217A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108400224A (zh) * 2017-05-12 2018-08-14 苏州星烁纳米科技有限公司 量子点封装结构以及背光模组
CN108766234A (zh) * 2018-07-10 2018-11-06 合肥惠科金扬科技有限公司 防漏光的显示设备

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204554543U (zh) * 2015-04-21 2015-08-12 深圳Tcl新技术有限公司 背光模组及液晶显示装置
CN105158975B (zh) * 2015-10-12 2018-09-25 深圳市华星光电技术有限公司 背光模组组件
CN205691914U (zh) * 2016-06-22 2016-11-16 京东方科技集团股份有限公司 背光模组及其显示器件

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CN103823320A (zh) * 2014-03-14 2014-05-28 深圳市华星光电技术有限公司 背光模组
CN103885243A (zh) * 2014-01-27 2014-06-25 深圳市华星光电技术有限公司 背光模组及包括该背光模组的液晶显示器
CN204062680U (zh) * 2014-08-06 2014-12-31 冠捷显示科技（中国）有限公司 一种装有量子点封装管的背光模组及其显示装置
US20150077970A1 (en) * 2013-09-13 2015-03-19 Samsung Display Co., Ltd. Light source, a method of manufacturing the same, and a backlight unit having the same
CN204554543U (zh) * 2015-04-21 2015-08-12 深圳Tcl新技术有限公司 背光模组及液晶显示装置

Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
US20150077970A1 (en) * 2013-09-13 2015-03-19 Samsung Display Co., Ltd. Light source, a method of manufacturing the same, and a backlight unit having the same
CN103885243A (zh) * 2014-01-27 2014-06-25 深圳市华星光电技术有限公司 背光模组及包括该背光模组的液晶显示器
CN103823320A (zh) * 2014-03-14 2014-05-28 深圳市华星光电技术有限公司 背光模组
CN204062680U (zh) * 2014-08-06 2014-12-31 冠捷显示科技（中国）有限公司 一种装有量子点封装管的背光模组及其显示装置
CN204554543U (zh) * 2015-04-21 2015-08-12 深圳Tcl新技术有限公司 背光模组及液晶显示装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108400224A (zh) * 2017-05-12 2018-08-14 苏州星烁纳米科技有限公司 量子点封装结构以及背光模组
CN108766234A (zh) * 2018-07-10 2018-11-06 合肥惠科金扬科技有限公司 防漏光的显示设备

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