WO2017166502A1 - 一种led灯组、背光模组及显示设备 - Google Patents

一种led灯组、背光模组及显示设备 Download PDF

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Publication number
WO2017166502A1
WO2017166502A1 PCT/CN2016/088990 CN2016088990W WO2017166502A1 WO 2017166502 A1 WO2017166502 A1 WO 2017166502A1 CN 2016088990 W CN2016088990 W CN 2016088990W WO 2017166502 A1 WO2017166502 A1 WO 2017166502A1
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Prior art keywords
led lamp
terminal
circuit board
printed circuit
lamp set
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PCT/CN2016/088990
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English (en)
French (fr)
Inventor
朱昆鹏
贾智帅
孟献雷
张金南
叶芳岱
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Le Holdings Beijing Co Ltd
Leshi Zhixin Electronic Technology Tianjin Co Ltd
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Le Holdings Beijing Co Ltd
Leshi Zhixin Electronic Technology Tianjin Co Ltd
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Priority to US15/240,532 priority Critical patent/US20170285251A1/en
Publication of WO2017166502A1 publication Critical patent/WO2017166502A1/zh
Anticipated expiration legal-status Critical
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S4/00—Lighting devices or systems using a string or strip of light sources
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/06—Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices, e.g. connectors

Definitions

  • the present invention relates to the field of display technologies, and in particular, to an LED light group, a backlight module, and a display device.
  • a backlight module of a display device generally uses a light-emitting diode (LED) as a light source. According to the distribution position of the light source, the backlight module can be divided into a direct type and a side-in type.
  • the main structure of the side-in type backlight module includes: a back board having a receiving space, and is located in the receiving space of the back board. And a reflective sheet, a light guide plate and an optical film placed in sequence, an LED lamp group located between the light incident end surface of the light guide plate and the side wall of the back plate, and a plastic frame disposed above the optical film and assembled with the back plate.
  • the conventional LED lamp set 10 includes an elongated printed circuit board 11, a plurality of LEDs 12 mounted along the longitudinal direction of the printed circuit board 11, and a terminal 13 at one end of the printed circuit board 11. Since the size of the terminal 13 is large, the light guide plate 20 usually needs to be grooved to reserve space for the terminal.
  • the screen of the backlight module has a dark area at a corner where the terminal is located, thereby affecting the optical quality of the display device;
  • the current terminal block Usually made of plastic material, it is fixed on the printed circuit board by adhesive. When the display device performs vibration drop test, the terminal block will often fall off due to the light guide plate striking the terminal block, resulting in poor contact of the LED lamp group and affecting the display quality. .
  • the invention provides an LED lamp group, a backlight module and a display device, so as to improve the vignetting phenomenon of the backlight module and improve the display quality of the display device.
  • the LED lamp set provided by the invention comprises a printed circuit board, a plurality of LEDs arranged on the printed circuit board and arranged along the long side of the printed circuit board, and a terminal located at one end of the printed circuit board, the surface of the terminal It has a white light photoluminescent coating.
  • the surface of the terminal opposite to the light incident end surface of the light guide plate has a spherical structure.
  • the surface of the terminal opposite to the light incident end surface of the light guide plate has an arch structure.
  • the dome line of the arch structure is disposed along a longitudinal direction of the printed circuit board.
  • the dome line of the arch structure is disposed along a short side direction of the printed circuit board.
  • the white light photoluminescent coating is a rare earth long afterglow phosphor coating.
  • the terminal has a rubber skin.
  • the LED lamp set of the invention is applied to a backlight module. Since the surface of the terminal has a white light photoluminescence coating, under the illumination of the LED light source, the surface of the terminal will emit uniform white light, thereby effectively improving the backlight module. The vignetting phenomenon of the screen improves the display quality of the display device.
  • the present invention also provides a backlight module including a light guide plate and the LED lamp set according to any of the foregoing aspects, the light guide plate having a slit for avoiding the terminal.
  • the phenomenon of the vignetting of the backlight module is improved, thereby improving the display quality of the display device.
  • the terminal is in contact with the light incident end surface of the light guide plate.
  • the present invention also provides a display device comprising the backlight module according to the foregoing technical solution. Since the phenomenon of the vignetting of the backlight module is improved, the display device has better product quality.
  • FIG. 1 is a schematic structural view of a conventional LED lamp group and a light guide plate
  • FIG. 2 is a schematic structural view of an LED lamp group and a light guide plate according to an embodiment of the invention
  • FIG. 3 is a schematic view showing the illumination of an LED lamp group according to an embodiment of the invention.
  • FIG. 4 is a schematic structural view of an LED lamp group according to another embodiment of the present invention.
  • FIG. 5 is a schematic structural view of an LED lamp group according to still another embodiment of the present invention.
  • 10-LED lamp set 20-light guide plate; 11-printed circuit board; 12-LED; 13-terminal.
  • 30-LED lamp group 40-light guide plate; 31-printed circuit board; 32-LED;
  • the LED lamp set 30 provided by the embodiment of the present invention includes a printed circuit board 31, a plurality of LEDs 32 disposed on the printed circuit board 31 and arranged along the long side of the printed circuit board 31, and located at A terminal 33 at one end of the printed circuit board 31, the surface of which has a white light photoluminescent coating.
  • the surface of the terminal 33 since the surface of the terminal 33 has a white light photoluminescence coating, under the illumination of the LED 12 light source, the surface of the terminal 33 emits uniform white light, thereby effectively improving the screen of the backlight module.
  • the vignetting phenomenon improves the display quality of the display device.
  • the surface of the terminal 33 opposite to the light incident end surface of the light guide plate has a spherical structure.
  • the surface area of the terminal 33 can be increased, thereby increasing the illumination range of the terminal 33, and the white light emitted from the terminal can be better irradiated to the light incident end surface of the light guide plate, thereby further improving the backlight mode.
  • the vignetting phenomenon of the group's picture improves the display quality of the display device.
  • the surface of the terminal opposite to the light incident end surface of the light guide plate has an arched structure.
  • the dome line of the arch structure is disposed along the longitudinal direction of the printed circuit board 31; or, as shown in FIG. 5, the dome line of the arch structure is disposed along the short side direction of the printed circuit board 31.
  • the surface area of the terminal 33 can also be increased, thereby increasing the illumination range of the terminal 33, and the white light emitted from the terminal can be better irradiated to the light incident end surface of the light guide plate, thereby further improving the backlight.
  • the vignetting phenomenon of the module improves the display quality of the display device.
  • the specific form of the arch structure is not limited, and may be, for example, a parabola shape, a circular arc shape or the like.
  • the white light photoluminescent coating is a rare earth long afterglow phosphor coating.
  • the rare earth long afterglow phosphor has stable properties and long afterglow delay.
  • the rare earth long afterglow phosphor coating can provide a more stable light source for the display device and improve the quality of the display device.
  • the terminal has a rubber skin.
  • the embodiment of the present invention further provides a backlight module, including a light guide plate 20 and an LED lamp group 30 of any of the foregoing technical solutions.
  • the light guide plate 40 has a slit 41 for avoiding the terminal block 33.
  • the light guide plate 40 has a slit 41 for avoiding the terminal block 33, so that the structure of the backlight module can be made more compact, so that the white light emitted by the LED lamp group 30 is better irradiated to the light incident end surface of the light guide plate, thereby improving the light of the display device. effect.
  • the phenomenon of the vignetting of the backlight module is improved, thereby improving the display quality of the display device.
  • the terminal 33 is in contact with the light incident end face of the light guide plate 40. In this way, the positioning and assembly between the LED 32 and the light guide plate 40 can be facilitated, and the impact of the end face of the light guide plate on the LED can be reduced, thereby further improving the product quality of the display device.
  • the phenomenon of the vignetting of the backlight module provided by the embodiment of the invention is improved, thereby improving the display quality of the display device, further improving the reliability of the LED lamp group and improving the display.
  • Product quality of the equipment compared with the prior art, the phenomenon of the vignetting of the backlight module provided by the embodiment of the invention is improved, thereby improving the display quality of the display device, further improving the reliability of the LED lamp group and improving the display.
  • the embodiment of the invention further provides a display device, comprising the backlight module according to the foregoing technical solution. Since the phenomenon of the vignetting of the backlight module is improved, the display device has better product quality.
  • the specific type of the display device is not limited, and may be, for example, a liquid crystal television, a liquid crystal display, or the like.

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

Abstract

一种LED灯组（30）、背光模组及显示设备。LED灯组（30）包括印刷电路板（31）、位于印刷电路板（31）上并沿印刷电路板（31）的长边方向排布的多颗LED（32），以及位于印刷电路板（31）一端的接线端子（33），接线端子（33）的表面具有白光光致发光涂层。可以改善背光模组的画面暗角现象，提升显示设备的显示品质。

Description

一种LED灯组、背光模组及显示设备
本申请要求在2016年03月30日提交中国专利局、申请号为201620260977.1、实用新型名称为“一种LED灯组、背光模组及显示设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及显示技术领域，特别是涉及一种LED灯组、背光模组及显示设备。
背景技术
显示设备的背光模组普遍采用发光二极管(light-emitting diode，简称LED)作为光源。根据光源的分布位置，背光模组可分为直下式和侧入式两种，其中，侧入式背光模组的主要结构包括：具有容置空间的背板，位于背板的容置空间内并顺序放置的反射片、导光板和光学膜片，位于导光板的入光端面与背板侧壁之间的LED灯组，以及位于光学膜片上方且与背板组配的胶框。
如图1所示，现有的LED灯组10包括：长条状的印刷电路板11、沿印刷电路板11的长边方向安装的多颗LED12以及位于印刷电路板11一端的接线端子13，由于接线端子13的尺寸占用空间较大，导光板20通常需要做切槽处理以为该接线端子预留出空间。
在实现本发明过程中，发明人发现现有技术中至少存在如下问题：背光模组的画面在接线端子所在的角落处存在暗区，从而影响到显示设备的光学品质；此外，目前的接线端子通常为塑料材质，通过粘胶固定在印刷电路板上，在显示设备进行振动跌落测试时，经常会因导光板撞击接线端子导致接线端子脱落，从而造成LED灯组线路接触不良，影响到显示品质。
发明内容
本发明提供了一种LED灯组、背光模组及显示设备，以改善背光模组的画面暗角现象，提升显示设备的显示品质。
本发明提供的LED灯组，包括印刷电路板、位于印刷电路板上并沿印刷电路板的长边方向排布的多颗LED，以及位于印刷电路板一端的接线端子，所述接线端子的表面具有白光光致发光涂层。
优选的，所述接线端子与导光板的入光端面相对的表面具有球面结构。
优选的，所述接线端子与导光板的入光端面相对的表面具有拱形结构。
可选的，所述拱形结构的拱顶线沿印刷电路板的长边方向设置。
可选的，所述拱形结构的拱顶线沿印刷电路板的短边方向设置。
优选的，所述白光光致发光涂层为稀土长余辉荧光体涂层。
较佳的，所述接线端子具有橡胶表层。
将本发明LED灯组应用于背光模组，由于接线端子的表面具有白光光致发光涂层，在LED光源的照射下，接线端子表面会发出均匀的白光，从而有效地改善了背光模组的画面暗角现象，提升了显示设备的显示品质。
本发明还提供了一种背光模组，包括导光板和根据前述任一技术方案所述的LED灯组，所述导光板具有避让所述接线端子的切槽。相比现有技术，该背光模组的画面暗角现象得以改善，从而提升了显示设备的显示品质。
优选的，所述接线端子与导光板的入光端面接触。
本发明还提供了一种显示设备，包括根据前述技术方案所述的背光模组。由于背光模组的画面暗角现象得以改善，因此，显示设备具有较佳的产品品质。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为现有的LED灯组与导光板的结构示意图；
图2为本发明一实施例LED灯组与导光板结构示意图；
图3为本发明一实施例LED灯组发光示意图；
图4为本发明另一实施例LED灯组结构示意图；
图5为本发明又一实施例LED灯组结构示意图。
附图标记：
现有技术部分：
10-LED灯组；20-导光板；11-印刷电路板；12-LED；13-接线端子。
本发明实施例部分：
30-LED灯组；40-导光板；31-印刷电路板；32-LED；
33-接线端子；41-切槽。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
如图2和3所示，本发明实施例提供的LED灯组30，包括印刷电路板31、位于印刷电路板31上并沿印刷电路板31的长边方向排布的多颗LED32，以及位于印刷电路板31一端的接线端子33，接线端子33的表面具有白光光致发光涂层。
采用本发明实施例的技术方案，由于接线端子33的表面具有白光光致发光涂层，在LED12光源的照射下，接线端子33表面会发出均匀的白光，从而有效地改善了背光模组的画面暗角现象，提升了显示设备的显示品质。
如图4所示，在本发明的一个优选实施例中，接线端子33与导光板的入光端面相对的表面具有球面结构。采用该技术方案，可以增加接线端子33的表面积，从而增大了接线端子33的光照范围，并且可以使接线端子发出的白光更好地照射到导光板的入光端面，因此进一步改善了背光模组的画面暗角现象，提升了显示设备的显示品质。
在本发明的另一个优选实施例中，接线端子与导光板的入光端面相对的表面具有拱形结构。如图3所示，拱形结构的拱顶线沿印刷电路板31的长边方向设置；或者，如图5所示，拱形结构的拱顶线沿印刷电路板31的短边方向设置。采用该技术方案，也可以增加接线端子33的表面积，从而增大了接线端子33的光照范围，并且可以使接线端子发出的白光更好地照射到导光板的入光端面，因此进一步改善了背光模组的画面暗角现象，提升了显示设备的显示品质。
此外，值得一提的是，拱形结构的具体形式不限，例如可以为抛物线形、圆弧形等。
优选的，白光光致发光涂层为稀土长余辉荧光体涂层。稀土长余辉荧光体的性质稳定，余辉延时较长，使用稀土长余辉荧光体涂层可以为显示设备提供更加稳定的光源，提高了显示设备的质量。
在本发明的优选实施例中，接线端子具有橡胶表层。采用该技术方案，当对显示设备进行振动跌落测试时，导光板对接线端子的撞击由于接线端子的橡胶表层而起到缓冲作用，因此接线端子能够较牢固的固定在印刷电路板上，使LED灯组线路连接更加可靠，提高了显示设备的质量。
如图2所示，本发明实施例还提供了一种背光模组，包括导光板20和前述任一技术方案的LED灯组30，导光板40具有避让接线端子33的切槽41。导光板40具有避让接线端子33的切槽41，可以使背光模组的结构更加紧凑，从而使LED灯组30发出的白光更好地照射到导光板的入光端面，提高了显示设备的光效。该背光模组的画面暗角现象得以改善，从而提升了显示设备的显示品质。
在本发明的优选实施例中，接线端子33与导光板40的入光端面接触。这样，可以使LED32与导光板40之间便于定位组装，并且能够减小导光板端面对LED的撞击，从而进一步提升显示设备的产品品质。
综上，相比现有技术，本发明实施例提供的背光模组的画面暗角现象得以改善，从而提升了显示设备的显示品质，进一步，提高了LED灯组的使用可靠性，提升了显示设备的产品品质。
本发明实施例还提供了一种显示设备，包括根据前述技术方案的背光模组。由于背光模组的画面暗角现象得以改善，显示设备具有较佳的产品品质。显示设备的具体类型不限，例如可以为液晶电视、液晶显示屏等。
最后应说明的是：以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims (10)

  1. 一种LED灯组，其特征在于，包括印刷电路板、位于印刷电路板上并沿印刷电路板的长边方向排布的多颗LED，以及位于印刷电路板一端的接线端子，所述接线端子的表面具有白光光致发光涂层。
  2. 根据权利要求1所述的LED灯组，其特征在于，所述接线端子与导光板的入光端面相对的表面具有球面结构。
  3. 根据权利要求1所述的LED灯组，其特征在于，所述接线端子与导光板的入光端面相对的表面具有拱形结构。
  4. 根据权利要求3所述的LED灯组，其特征在于，所述拱形结构的拱顶线沿印刷电路板的长边方向设置。
  5. 根据权利要求3所述的LED灯组，其特征在于，所述拱形结构的拱顶线沿印刷电路板的短边方向设置。
  6. 根据权利要求1所述的LED灯组，其特征在于，所述白光光致发光涂层为稀土长余辉荧光体涂层。
  7. 根据权利要求1～6中任一项所述的LED灯组，其特征在于，所述接线端子具有橡胶表层。
  8. 一种背光模组，其特征在于，包括导光板和根据权利要求1～7任一所述的LED灯组，所述导光板具有避让所述接线端子的切槽。
  9. 根据权利要求8所述的背光模组，其特征在于，所述接线端子与导光板的入光端面接触。
  10. 一种显示设备，其特征在于，包括根据权利要求8或9所述的背光模组。
PCT/CN2016/088990 2016-03-30 2016-07-06 一种led灯组、背光模组及显示设备 Ceased WO2017166502A1 (zh)

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US15/240,532 US20170285251A1 (en) 2016-03-30 2016-08-18 Led bar, backlight module, and display device

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