WO2017166488A1 - 一种背光模组及显示设备 - Google Patents

一种背光模组及显示设备 Download PDF

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Publication number
WO2017166488A1
WO2017166488A1 PCT/CN2016/088974 CN2016088974W WO2017166488A1 WO 2017166488 A1 WO2017166488 A1 WO 2017166488A1 CN 2016088974 W CN2016088974 W CN 2016088974W WO 2017166488 A1 WO2017166488 A1 WO 2017166488A1
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Prior art keywords
memory structure
backlight module
display device
display
bottom wall
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PCT/CN2016/088974
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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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乐视控股（北京）有限公司
乐视致新电子科技（天津）有限公司
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Application filed by 乐视控股（北京）有限公司, 乐视致新电子科技（天津）有限公司 filed Critical 乐视控股（北京）有限公司
Priority to US15/243,686 priority Critical patent/US20170285407A1/en
Publication of WO2017166488A1 publication Critical patent/WO2017166488A1/zh

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    • 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

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a backlight module and a display device.
  • TFT-LCD Thin Film Transistor Liquid Crystal Display
  • the inventors have found that the defects of the existing curved display device are at least that, due to the provision of spacers between the backlight module and the display panel, the thickness of the display device is thick, which affects the visual effect;
  • the light source emitted by the backlight module is a planar light source, which does not match the surface-shaped display panel, and thus affects the surface display effect.
  • the invention provides a backlight module and a display device, which can reduce the thickness of the display device, improve the curved surface display effect of the display device, and further realize the conversion of the curved surface display and the flat display, thereby enriching the application occasion of the display device.
  • the outer portion of the memory structure is covered with an insulating heat insulation layer.
  • the memory structure is planar when the heating circuit is disconnected.
  • the memory structure is arched toward the rear side along the length of the backing plate.
  • the memory structure is connected to an inner bottom wall of the backboard.
  • the memory structure is connected to an outer bottom wall of the backboard.
  • the memory structural member is at least two, and each of the memory structural members is strip-shaped and disposed along a length direction of the back plate.
  • the memory structure is a planar memory structure, and the planar memory structure is matched to a shape of a bottom wall of the backboard.
  • the memory structure is riveted, bonded or screwed to the bottom wall of the backboard.
  • the memory structure is heated by the heating circuit by using the shape memory effect of the memory structure.
  • the heating temperature reaches the memory temperature of the memory structure
  • the memory structure is bent, thereby driving the backlight module.
  • the display panel is curved to realize the curved surface display of the display device; when the heating circuit is disconnected, the memory structure member drives the backlight module and the display panel to be in a planar state, and the flat display of the display device can be realized.
  • no spacer is needed between the backlight module and the display panel, thereby reducing the thickness of the display device, improving the surface display effect of the display device, and further, converting the surface display and the flat display. Enriched the application of display devices.
  • the present invention also provides a display device comprising the backlight module and the display panel according to any of the preceding technical solutions.
  • the thickness of the display device is small, and the surface display effect is also improved. Further, the conversion of the curved surface display and the flat display can be realized, which enriches the application of the display device.
  • FIG. 1 is a schematic view showing the bending of a memory structural member and a backing plate according to an embodiment of the present invention
  • FIG. 2 is a schematic view showing a state in which a memory structure member and a backing plate are in a planar state according to an embodiment of the present invention
  • FIG. 3 is a schematic view showing the bending of the memory structural member and the back plate according to another embodiment of the present invention.
  • 10-back plate 20-memory structural member; 21-electric heating wire; 22-connection hole.
  • a backlight module provided by an embodiment of the present invention includes an elastically deformable back plate 10 , a memory structural member 20 connected to a bottom wall of the back plate, and a printed circuit board (not shown).
  • the interior of the memory structure 20 has a heating wire 21, and both ends of the heating wire 21 are electrically connected to the printed circuit board to form a heating circuit.
  • the memory structure 20 is heated by the heating circuit by the shape memory effect of the memory structure 20, and the memory structure 20 occurs when the heating temperature reaches the memory temperature of the memory structure 20. Bending, thereby driving the backlight module and the display panel to bend, realizing the curved surface display of the display device; when the heating circuit is disconnected, the memory structure member drives the backlight module and the display panel to be in a planar state, and the planar display of the display device can be realized.
  • no spacer is needed between the backlight module and the display panel, thereby reducing the thickness of the display device, improving the surface display effect of the display device, and further, converting the surface display and the flat display. Enriched the application of display devices.
  • the specific material of the back plate 10 that can be elastically deformed is not limited, and may be, for example, a spring material such as spring steel or beryllium bronze.
  • the shape memory effect of the memory structure is specifically as follows: the main material of the memory structure is a shape memory alloy, and the shape memory alloy exhibits the first structural form above the memory temperature, and the second structural form below the memory temperature.
  • the heating structure is used to heat the memory structure. When the temperature reaches above the memory temperature, the crystal structure inside the shape memory alloy changes, causing the shape memory alloy to deform. At this time, the shape memory alloy exhibits the first structure; when heating When the circuit is broken and the temperature drops below the memory temperature, the crystal inside the shape memory alloy returns to the original structure, and the shape memory alloy exhibits the second structure.
  • the exterior of the memory structure is covered with an insulating thermal barrier.
  • the insulating and insulating layer can reduce damage to the backlight module due to the temperature rise of the memory structure.
  • the memory structure 20 when the heating circuit is disconnected, the memory structure 20 is planar; as shown in FIG. 1, when the heating circuit is turned on, the memory structure 20 is along the backplane. 10 The length direction is arched to the rear side.
  • the memory structure 20 can realize two different structures of a plane and a curved surface, thereby driving the backlight module and the display panel to be planar or curved, thereby realizing the planar display of the display device.
  • the conversion of the display and the surface display enriches the application of the display device.
  • the specific curvature value of the curved surface formed by the memory structure member arching toward the rear side along the length direction of the back plate is not limited, and may be determined according to the specific type of the display device, the use occasion, and the like.
  • the memory structure is coupled to the inner bottom wall of the back panel; or the memory structure is coupled to the outer bottom wall of the back panel.
  • the specific shape of the memory structure of the present invention is not limited.
  • the memory structure is at least two, and each memory structure is strip-shaped and disposed along the length direction of the backboard. In this way, the force of the memory structure component on the backlight module and the display panel is more balanced, and the backlight module and the display panel are curved, thereby further improving the surface display effect of the display device.
  • the memory structure 20 can also be a planar memory structure that matches the shape of the bottom wall of the backing plate 10.
  • the technical solution can also make the force of the memory structure component on the backlight module and the display panel more balanced, and drive the backlight module and the display panel to bend, thereby further improving the surface display effect of the display device.
  • the specific manner of connecting the memory structure 20 to the backboard 10 is not limited, for example, it can be riveted, bonded or screwed, and when the riveting or screwing is used, the memory structural member 20 and the backboard 10 are required.
  • a plurality of connection holes 22 are respectively formed at corresponding positions.
  • the backlight module provided by the embodiment of the invention can reduce the thickness of the display device and improve the surface display effect of the display device, and further realize the conversion of the curved surface display and the flat display.
  • the application of the display device can reduce the thickness of the display device and improve the surface display effect of the display device, and further realize the conversion of the curved surface display and the flat display.
  • the embodiment of the invention further provides a display device, comprising the backlight module and the display panel according to any of the foregoing technical solutions.
  • a display device comprising the backlight module and the display panel according to any of the foregoing technical solutions.
  • the thickness of the display device is small, and the surface display effect is also improved. Further, the conversion of the curved surface display and the flat display can be realized, which enriches the application of the display device.
  • 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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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Planar Illumination Modules (AREA)

Abstract

一种背光模组及显示设备。背光模组包括可发生弹性变形的背板（10）、与背板（10）的底壁连接的记忆结构件（20），以及印刷电路板，记忆结构件（20）的内部具有电热丝（21），电热丝（21）的两端与印刷电路板电连接形成加热回路。采用上述技术方案，可以减小显示设备的厚度，提升显示设备的曲面显示效果，进一步，还可以实现曲面显示和平面显示的转换，丰富了显示设备的应用场合。

Description

一种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201610195660.9、发明名称为“一种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，特别是涉及一种背光模组及显示设备。
背景技术
在平板显示设备中，薄膜晶体管液晶显示器(Thin Film Transistor Liquid Crystal Display，简称TFT-LCD)具有体积小、功耗低、制造成本相对较低和无辐射等特点，在当前的平板显示器市场占据了主导地位。
目前，曲面显示已经成为显示技术新的发展趋势。在现有技术中，为了实现TFT-LCD的曲面显示，通常是在背光模组和显示面板之间设置不同高度的间隔物，通过控制间隔物的高度分布使显示面板弯曲一定的弧度，从而实现曲面显示。
在实现本发明过程中，发明人发现现有曲面显示设备的缺陷至少在于，由于在背光模组和显示面板之间设置有间隔物，导致显示设备的厚度较厚，影响视觉效果；此外，目前的曲面显示设备在显示时，背光模组发出的光源为平面光源，与曲面形状的显示面板不匹配，因此会影响到曲面显示效果。
发明内容
本发明提供了一种背光模组及显示设备，以减小显示设备的厚度，提升显示设备的曲面显示效果，进一步，还可以实现曲面显示和平面显示的转换，丰富了显示设备的应用场合。
本发明提供的背光模组，包括可发生弹性变形的背板、与背板的底壁连接的记忆结构件，以及印刷电路板，所述记忆结构件的内部具有电热丝，所述电热丝的两端与印刷电路板电连接形成加热回路。
优选的，所述记忆结构件的外部包覆有绝缘隔热层。
优选的，当所述加热回路断开时，所述记忆结构件呈平面状。
较佳的，当所述加热回路接通时，所述记忆结构件沿背板的长度方向向后侧拱起。
可选的，所述记忆结构件与背板的内底壁连接。
可选的，所述记忆结构件与背板的外底壁连接。
可选的，所述记忆结构件至少为两个，每个记忆结构件为条状且沿背板的长度方向设置。
可选的，所述记忆结构件为面状记忆结构件，所述面状记忆结构件与背板的底壁形状相匹配。
可选的，所述记忆结构件与背板的底壁铆接、粘接或通过螺钉连接。
在本发明技术方案中，利用记忆结构件的形状记忆效应，通过加热回路对记忆结构件进行加热，当加热温度达到记忆结构件的记忆温度时，记忆结构件会发生弯曲，从而带动背光模组和显示面板弯曲，实现显示设备的曲面显示；当加热回路断开时，记忆结构件带动背光模组和显示面板呈平面状态，可以实现显示设备的平面显示。相比现有技术，背光模组和显示面板之间无需设置间隔物，因此减小了显示设备的厚度，提升了显示设备的曲面显示效果，进一步，还可以实现曲面显示和平面显示的转换，丰富了显示设备的应用场合。
本发明还一种显示设备，包括根据前述任一技术方案所述的背光模组和显示面板。该显示设备的厚度较小，曲面显示效果也得到了提升，进一步，还可以实现曲面显示和平面显示的转换，丰富了显示设备的应用场合。
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为本发明实施例中记忆结构件与背板弯曲示意图；
图2为本发明实施例中记忆结构件与背板处于平面状态示意图；
图3为本发明另一实施例中记忆结构件与背板弯曲示意图。
附图标记：
10-背板；20-记忆结构件；21-电热丝；22-连接孔。
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1所示，本发明实施例提供的背光模组，包括可发生弹性变形的背板10、与背板的底壁连接的记忆结构件20，以及印刷电路板(图中未示出)，记忆结构件20的内部具有电热丝21，电热丝21的两端与印刷电路板电连接形成加热回路。
在本发明实施例的技术方案中，利用记忆结构件20的形状记忆效应，通过加热回路对记忆结构件20进行加热，当加热温度达到记忆结构件20的记忆温度时，记忆结构件20会发生弯曲，从而带动背光模组和显示面板弯曲，实现显示设备的曲面显示；当加热回路断开时，记忆结构件带动背光模组和显示面板呈平面状态，可以实现显示设备的平面显示。相比现有技术，背光模组和显示面板之间无需设置间隔物，因此减小了显示设备的厚度，提升了显示设备的曲面显示效果，进一步，还可以实现曲面显示和平面显示的转换，丰富了显示设备的应用场合。
其中，可发生弹性变形的背板10的具体材质不限，例如可以为弹簧钢、铍青铜等弹性较好的金属材质。
记忆结构件的形状记忆效应具体为：记忆结构件的主要材质为形状记忆合金，形状记忆合金在记忆温度以上表现为第一种结构形态，在记忆温度以下表现为第二种结构形态。利用加热回路对记忆结构件进行加热，当温度达到记忆温度以上时，形状记忆合金内部的晶体结构会发生变化，促使形状记忆合金发生形变，此时形状记忆合金表现为第一种结构；当加热回路断开，温度下降到记忆温度以下时，形状记忆合金内部的晶体恢复为原有的结构，形状记忆合金表现为第二种结构。
在本发明的优选实施例中，记忆结构件的外部包覆有绝缘隔热层。绝缘隔热层可以减小由于记忆结构件的温度升高对背光模组造成的损害。
如图2所示，在本发明的优选实施例中，当加热回路断开时，记忆结构件20呈平面状；如图1所示，当加热回路接通时，记忆结构件20沿背板10 的长度方向向后侧拱起。采用该技术方案，通过控制加热电路的通断，记忆结构件20可以实现平面和曲面两种不同的结构，从而带动背光模组和显示面板呈现为平面状或曲面状，实现显示设备的平面显示和曲面显示的转换，丰富了显示设备的应用场合。
此外，值得一提的是，记忆结构件沿背板的长度方向向后侧拱起形成的曲面的具体曲率值不限，可以根据显示设备的具体类型、使用场合等确定。
在本发明实施例中，记忆结构件与背板的内底壁连接；或者，记忆结构件与背板的外底壁连接。
本发明的记忆结构件的具体形状不限，例如，如图1所示，记忆结构件至少为两个，每个记忆结构件为条状且沿背板的长度方向设置。这样可以使记忆结构件对背光模组和显示面板的作用力更加均衡，带动背光模组和显示面板弯曲，从而进一步提升了显示设备的曲面显示效果。
如图3所示，记忆结构件20还可以为面状记忆结构件，面状记忆结构件与背板10的底壁形状相匹配。采用该技术方案，也可以使记忆结构件对背光模组和显示面板的作用力更加均衡，带动背光模组和显示面板弯曲，从而进一步提升了显示设备的曲面显示效果。
如图1所示，记忆结构件20与背板10连接的具体方式不限，例如可以铆接、粘接或通过螺钉连接，当采用铆接或螺钉连接时，需要在记忆结构件20和背板10相对应的位置分别开设若干个连接孔22。
综上，相比现有技术，采用本发明实施例提供的背光模组，可以减小显示设备的厚度，提升显示设备的曲面显示效果，进一步，还可以实现曲面显示和平面显示的转换，丰富了显示设备的应用场合。
本发明实施例还一种显示设备，包括根据前述任一技术方案的背光模组和显示面板。相比现有技术，该显示设备的厚度较小，曲面显示效果也得到了提升，进一步，还可以实现曲面显示和平面显示的转换，丰富了显示设备的应用场合。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. 一种背光模组，其特征在于，包括可发生弹性变形的背板、与背板的底壁连接的记忆结构件，以及印刷电路板，所述记忆结构件的内部具有电热丝，所述电热丝的两端与印刷电路板电连接形成加热回路。
  2. 根据权利要求1所述的背光模组，其特征在于，所述记忆结构件的外部包覆有绝缘隔热层。
  3. 根据权利要求1所述的背光模组，其特征在于，当所述加热回路断开时，所述记忆结构件呈平面状。
  4. 根据权利要求1所述的背光模组，其特征在于，当所述加热回路接通时，所述记忆结构件沿背板的长度方向向后侧拱起。
  5. 根据权利要求1所述的背光模组，其特征在于，所述记忆结构件与背板的内底壁连接。
  6. 根据权利要求1所述的背光模组，其特征在于，所述记忆结构件与背板的外底壁连接。
  7. 根据权利要求1～6中任一项所述的背光模组，其特征在于，所述记忆结构件至少为两个，每个记忆结构件为条状且沿背板的长度方向设置。
  8. 根据权利要求1～6中任一项所述的背光模组，其特征在于，所述记忆结构件为面状记忆结构件，所述面状记忆结构件与背板的底壁形状相匹配。
  9. 根据权利要求1～6中任一项所述的背光模组，其特征在于，所述记忆结构件与背板的底壁铆接、粘接或通过螺钉连接。
  10. 一种显示设备，其特征在于，包括根据权利要求1～9任一所述的背光模组和显示面板。
PCT/CN2016/088974 2016-03-30 2016-07-06 一种背光模组及显示设备 WO2017166488A1 (zh)

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