WO2015196498A1 - 用于双面显示的直下式背光结构 - Google Patents
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- WO2015196498A1 WO2015196498A1 PCT/CN2014/081276 CN2014081276W WO2015196498A1 WO 2015196498 A1 WO2015196498 A1 WO 2015196498A1 CN 2014081276 W CN2014081276 W CN 2014081276W WO 2015196498 A1 WO2015196498 A1 WO 2015196498A1
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- the present invention relates to a liquid crystal display, and more particularly to a backlight of a double-sided display direct type liquid crystal display
- Liquid crystal displays are used as displays. It has high space utilization, low power consumption, no radiation and low electromagnetic interference. It is widely used in information communication tools such as TV, mobile phones and tablets. With the further application of liquid crystal displays, liquid crystal displays with double-sided display functions have also begun to be applied in some fields and have been recognized by consumers. In general, double-sided display can be achieved by using two liquid crystal panels. However, the liquid crystal display itself does not self-illuminate, and the display process requires the assistance of the backlight assembly to achieve. The concept is equivalent to the bonding of two liquid crystal displays back to back. However, this will be contrary to the low utilization of the space occupied by the liquid crystal display, and the material saving cannot be realized, and the meaning is not significant.
- the side-in structure uses a light guide plate to mix and guide light, and has a thin profile, which is the best backlight mode for double-sided displays.
- the current direct-down contrast side-lit backlight design eliminates the cost of LGP (light guide) and has a huge cost advantage.
- LGP light guide
- the disadvantage of a straight-out appearance is that the consumer's acceptability is greatly reduced. If the direct type is used directly in the double-sided display, since the direct type must ensure a sufficient light mixing distance (OD value), it is difficult to perform double-sided printing on the PCB, which will inevitably lead to a direct-type double-sided display. The thickness is further increased.
- the direct type backlight structure for double-sided display includes a first display panel, a second display panel, and a light source assembly disposed between the first display panel and the second display panel, wherein
- the backplane has a first surface facing the first display panel and a second surface facing the second display panel, wherein the back panel is provided with a hollow through hole, and the light source component is a light bar and a light bar With a part of the light bar is attached to the first side and the illuminant on the light bar is disposed in the through hole
- a part of the light bar is attached to the second side and the illuminant on the light bar is disposed in the through hole
- the light bar is adhered to the first surface and the second surface of the backboard through the thermal conductive adhesive, or is fixed by the hook structure on both sides of the light strip and the back panel.
- the inner wall of the through hole of the back plate is a sloped surface, and the opening of the through hole gradually increases from the bottom of the light bar to the illuminated surface.
- the illuminant of the light bar is an LED lamp, the surface of the LED lamp is provided with an astigmatism structure; and the astigmatism structure is a secondary lens of the LED lamp package.
- the present invention also provides another direct type backlight structure for double-sided display, comprising a first display panel, a second display panel, and a light source assembly disposed between the first display panel and the second display panel, wherein
- the light source component is an LED light panel
- the LED light panel comprises a first surface and a second surface, wherein the first surface is provided with an LED lamp and is irradiated to the first display panel, and the LED light panel is further provided with a hollow through hole.
- the light source assembly further includes an LED light bar, the LED light bar is attached to the first surface, and the LED light on the LED light bar is disposed in the through hole to illuminate the second display panel.
- the LED light bar is adhered to the LED light board through the heat conductive glue, or is fixed by the hook structure of the LED light board on both sides of the LED light bar.
- the inner wall of the through hole of the LED lamp board is a sloped surface, and the opening of the through hole gradually increases from the bottom of the LED strip to the second display panel.
- the surface of the LED lamp is provided with an astigmatism structure.
- the astigmatism structure is a secondary lens of the LED lamp package.
- FIG. 2 is an exploded perspective view showing the structure of the back plate and the light source unit of the embodiment 1 of the present invention.
- Figure 4 is an exploded perspective view showing the structure of a light source unit according to Embodiment 2 of the present invention.
- Figure 5 is a partial cross-sectional view showing a second embodiment of the present invention.
- Figure 6 is an exploded perspective view showing the structure of a light source unit according to Embodiment 3 of the present invention.
- Fig. 7 is a schematic view showing the structure of a secondary lens of an LED lamp according to Embodiment 3 of the present invention.
- Figure 8 is a schematic view showing the structure of the LED light bar and the back plate of the embodiment 3 of the present invention.
- FIG. 9 is an exploded perspective view showing the structure of a light source unit according to Embodiment 4 of the present invention.
- BEST MODE FOR CARRYING OUT THE INVENTION the present invention will be further described by way of embodiments with reference to the accompanying drawings.
- Embodiment 1 As shown in FIG. 1, in order to achieve the object of the present invention, the direct type backlight structure for double-sided display includes a first display panel 10, a second display panel 20, and a first display panel 10 and The light source assembly 30 between the display panels 20, in conjunction with FIG. 2, further includes a backing plate 40 having a first surface 41 facing the first display panel 10 and a second surface facing the second display panel 20 The surface of the back plate 40 is provided with a hollow through hole 43.
- the light source assembly 30 is an LED light bar 31.
- the LED light bar 31 is provided with a plurality of illuminants, and the illuminant is an LED lamp 32, and a part of the LEDs are included.
- the LED strip 32 of the light strip 31 is attached to the first surface 41 and the LED light 32 is disposed in the through hole 43 to illuminate the second display panel 20, and the other part of the LED light strip 31 is attached to the second surface 42 and the LED light on the light strip 32 is disposed in the through hole 43 and is irradiated to the first display panel 10. It is conceivable that the LED strips 31 respectively irradiated to the first display panel 10 and the second display panel 20 should be spaced apart to achieve an illuminating average effect.
- the LED light bar 31 is adhered to the first surface 41 and the second surface 4 of the back plate 40 by the thermal conductive adhesive 50. 2.
- the backlight structure can further reduce the thickness to achieve the purpose of finally reducing the thickness of the liquid crystal display.
- the inner wall of the through hole 43 may affect the illumination angle, and thus the inner wall of the through hole 43 of the back plate 40 may be designed as The inclined surface 44, as shown in Fig. 3, the opening of the through hole 43 gradually increases from the bottom of the LED light bar 31 toward the irradiation surface.
- Embodiment 2 provides another direct type backlight structure for double-sided display. The difference is as shown in FIG. 4 and FIG. 5, including the first display panel 10, the second display panel 20, and the first a light source assembly 30 between the display panel 10 and the second display panel 20 (see FIG. 1 for display panel structure), wherein the light
- the source assembly 30 is an LED panel 33.
- the LED panel 33 includes a first surface 34 and a second surface 35.
- the first surface 34 is provided with an LED lamp 32 and is incident on the first display panel 10.
- the LED lamp of this embodiment The plate 33 is different from the prior art in that the LED lamp plate 33 is further provided with a hollow through hole 36.
- the light source assembly 30 further includes an LED light bar 31.
- the LED light bar 31 is attached to the first surface 34 and the LED light bar 31 is provided with an LED light.
- 32 is disposed in the through hole 36 to illuminate the second display panel 20, and is similar to the through hole structure of the first embodiment.
- the inner wall of the through hole 36 of the lamp plate 33 is designed as a slope 361.
- This embodiment uses the LED lamp panel 33 instead of the backplane 40 of the embodiment 1, but it is necessary to make some improvements to the structure of the LED panel 33 while achieving the object of the present invention.
- Embodiment 3 As shown in FIG. 6 and FIG. 7, this embodiment is different from Embodiment 2 in that the through hole of the LED lamp board 33 of the light source unit 30 is replaced by a long hole 37, and the LED strip 31 is replaced.
- an astigmatism structure is formed on the surface of the LED lamp 32 (including the LED panel and the LED strip on the LED strip) to The effect of illuminating the LED lamp 32 is more uniform, and the astigmatism structure is the secondary lens 38 of the LED lamp package.
- the connection between the LED light bar 31 and the LED light plate 33 is also different from the above two embodiments, and the two sides of the LED light bar 31 are fixed with the hook structure of the LED light plate 33, as shown in FIG. A hook 39 is disposed at both ends of the lamp board 33, and the LED light bar 31 is press-fitted into the fixed connection.
- Embodiment 4 This embodiment is shown in FIG. 9.
- the main change is that the LED light bar can be integrated on one board, the light source assembly 30 is equivalent to two LED light boards 33, and the respective LED lights 32 correspond to another LED light board.
- the through hole 36 of 31 may also be a strip hole 37 as in the third embodiment. While the invention has been particularly shown and described with reference to the exemplary embodiments of the embodiments of the invention Various changes in form and detail.
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Abstract
一种用于双面显示的直下式背光结构,包括第一显示面板(10)、第二显示面板(20)和设于二者之间的光源组件(30),其中,还包括背板(40),背板(40)具有面向第一显示面板(10)的第一面(41)和面向第二显示面板(20)的第二面(42),所述背板(40)上设有镂空的通孔(43),所述光源组件(30)是灯条(31),灯条(31)上设有若干发光体(32),灯条(31)分别贴于第一面(41)且灯条(31)上的发光体(32)设于通孔(43)中照射于第二显示面板(20),和灯条(31)贴于第二面(42)且灯条(31)上的发光体(32)设于通孔(43)中照射于第一显示面板(10)。还包括用带有通孔(36)的LED灯板(33)代替背板(40),通孔(36)上贴有LED灯条(31)。可有效减小直下式背光结构的厚度,进一步减小双面显示器的厚度,给消费者更好的使用体验,而且结构简单,不需要增加更多的成本。
Description
说 明 书 用于双面显示的直下式背光结构
¾术领域
^ 本发明涉及液晶显示器, 特别指一种双面显示的直下式液晶显示器的背光
背景技术 液晶显示器作为显示器。 它具有高空间利用率、 低功耗、 无辐射以及低电 磁干扰等优越特性, 在电视、 手机、 平板电脑等信息沟通工具中被广泛使用。 随着液晶显示器的应用领域进一步加大, 具有双面显示功能的液晶显示器 也在某些领域开始被应用而被消费者认同。 一般说来, 双面显示通过使用两个 液晶面板即可实现。 然而液晶显示器本身并不自发光, 显示过程需要背光组件 的协助以实现。 其概念等同于将两个液晶显示器背靠背粘结实现。 但是, 这将 与液晶显示器的空间占用利用率低相违背, 同样也无法实现材料的节省, 意义 不大。 液晶显示器背光的入光方式分为两种: 侧入式和直下式。 侧入式结构利用 导光板混光及导光, 具有薄型化特点, 是双面显示器的最佳背光模式。 当前直 下式对比侧入式背光设计能够省去 LGP (导光板) 成本, 而具有巨大的成本优 势。 然而, 直下式外观较厚的缺点却极大地降低了消费者的可接受度。 若将直 下式直接使用于双面显示中, 由于直下式必须保证足够的混光距离 (OD值), 同时在 PCB板上进行双面打件也比较困难, 从而必将导致直下式双面显示的厚 度进一步增加。 发明内容 本发明的目的是提供一种用于双面显示的直下式背光结构。 为了达到本发明目的, 这种用于双面显示的直下式背光结构, 包括第一显 示面板、 第二显示面板和设于第一显示面板和第二显示面板之间的光源组件, 其中, 还包括背板, 背板具有面向第一显示面板的第一面和面向第二显示面板 的第二面, 所述背板上设有镂空的通孔, 所述光源组件是灯条, 灯条上设有若
-部分灯条贴于第一面且灯条上的发光体设于通孔中照射于
-部分灯条贴于第二面且灯条上的发光体设于通孔中照射于
其中, 所述灯条通过导热胶粘于背板的第一面和第二面, 或通过灯条两侧 与背板的卡勾结构固定。 其中, 所述背板的通孔内壁为斜面, 通孔的开口自灯条底部向照射面逐渐 增大。 其中, 所述灯条的发光体为 LED灯, 所述 LED灯表面设有散光结构; 散光 结构为 LED灯封装的二次透镜。 本发明还提供了另一种用于双面显示的直下式背光结构, 包括第一显示面 板、 第二显示面板和设于第一显示面板和第二显示面板之间的光源组件, 其中, 所述光源组件为 LED灯板,所述 LED灯板包括第一面和第二面,其中第一面设 有 LED灯并照射于第一显示面板, LED灯板还设有镂空的通孔, 所述光源组件 还包括 LED灯条, LED灯条贴于第一面且 LED灯条上 LED灯设于通孔中照射 于第二显示面板。 其中, 所述 LED灯条通过导热胶粘于 LED灯板上, 或通过 LED灯条两侧 与 LED灯板的卡勾结构固定。 其中,所述 LED灯板的通孔内壁为斜面,通孔的开口自 LED灯条底部向第 二显示面板逐渐增大。 其中, 所述 LED灯表面设有散光结构。 其中, 所述散光结构为 LED灯封装的二次透镜。 本发明的有益效果是, 有效减小了直下式背光结构的厚度, 进步减小双面 显示器的厚度, 给消费者更好的使用体验, 而且结构简单, 不需要增加更多的 成本。 附图说明
图 2是本发明实施例 1背板与光源组件结构分解图。
图 4是本发明实施例 2光源组件结构分解图。 图 5是本发明实施例 2局部剖视图。 图 6是本发明实施例 3光源组件结构分解图。 图 7是本发明实施例 3的 LED灯二次透镜结构示意图。 图 8是本发明实施例 3的 LED灯条和背板卡合结构示意图。 图 9是本发明实施例 4光源组件结构分解图。 具体实施方式 下面将结合附图用实施例对本发明进一步说明。 实施例 1 如图 1所示, 为了达到本发明目的, 这种用于双面显示的直下式背光结构, 包括第一显示面板 10、 第二显示面板 20和设于第一显示面板 10和第二显示面 板 20之间的光源组件 30, 同时结合图 2, 本实施例还包括背板 40, 背板 40具 有面向第一显示面板 10的第一面 41和面向第二显示面板 20的第二面 42,背板 40上设有镂空的通孔 43, 本实施例中, 光源组件 30是 LED灯条 31, LED灯条 31上设有若干发光体,发光体为 LED灯 32,其中一部分 LED灯条 31贴于第一 面 41且灯条上的 LED灯 32设于通孔 43中照射于第二显示面板 20, 另一部分 LED灯条 31贴于第二面 42且灯条上的 LED灯 32设于通孔 43中照射于第一显 示面板 10, 可以想像, 分别照射到第一显示面板 10、 第二显示面板 20的 LED 灯条 31应该间隔设置, 以达到光照度平均的效果, 另外, LED灯条 31通过导 热胶 50粘于背板 40的第一面 41和第二面 42。 在 LED灯 32与第一显示面板 10、 第二显示面板 20距离维持不变的情况下, 这种背光结构可以进一步减小厚 度, 达到最终减小液晶显示器厚度的目的。 同时, LED灯 32由于是处于通孔 43中,在 LED灯 32照射角度较大的情况下,通孔 43内壁可能会影响发光角度, 由此, 可以在背板 40的通孔 43内壁设计为斜面 44, 如图 3所示, 通孔 43的开 口自 LED灯条 31底部向照射面逐渐增大。 实施例 2 本实施例提供了另一种用于双面显示的直下式背光结构, 区别之处参照附 图 4、 图 5, 包括第一显示面板 10、 第二显示面板 20和设于第一显示面板 10和 第二显示面板 20之间的光源组件 30 (显示面板结构参见图 1 ), 其中, 所述光
源组件 30为 LED灯板 33,所述 LED灯板 33包括第一面 34和第二面 35,其中 第一面 34设有 LED灯 32并照射于第一显示面板 10,本实施例 LED灯板 33与 现有不同在于 LED灯板 33还设有镂空的通孔 36,所述光源组件 30还包括 LED 灯条 31, LED灯条 31贴于第一面 34且 LED灯条 31上 LED灯 32设于通孔 36 中照射于第二显示面板 20, 和实施例 1的通孔结构相仿, 灯板 33的通孔 36内 壁设计为斜面 361。 本实施例利用 LED灯板 33代替实施例 1中的背板 40,但需要对 LED灯板 33的结构做一些改进, 同时可以达到本发明目的。 实施例 3 如图 6、图 7所示,本实施例区别于实施例 2之处在于,光源组件 30的 LED 灯板 33所开的通孔用长条的孔槽 37代替, LED灯条 31从第一面 34连接于 LED 灯板 33并照射于第二显示面板 20,另夕卜,在 LED灯 32 (包括 LED灯板和 LED 灯条上的 LED灯) 表面还做有散光结构, 以使得 LED灯 32照射的效果更加均 匀, 这种散光结构为 LED灯封装的二次透镜 38。另外, LED灯条 31与 LED灯 板 33的连接也区别于以上两个实施例,而采用 LED灯条 31的两侧与 LED灯板 33的卡勾结构固定的方式, 见图 8, 在 LED灯板 33两端设有卡勾 39, 将 LED 灯条 31压嵌进去就可以达到固定连接的目的。 实施例 4 本实施例如图 9所示, 主要变化在于 LED灯条可以集成在一块板上, 光源 组件 30相当于两块 LED灯板 33扣合,各自的 LED灯 32对应于另一 LED灯板 31的通孔 36 (也可以是如实施例 3中条状孔槽 37)。 虽然本发明是参照其示例性的实施例被具体描述和显示的, 但是本领域的 普通技术人员应该理解, 在不脱离由权利要求限定的本发明的精神和范围的情 况下, 可以对其进行形式和细节的各种改变。
Claims
1、 一种用于双面显示的直下式背光结构, 包括第一显示面板、 第二显示面 板和设于第一显示面板和第二显示面板之间的光源组件, 其中, 还包括背板, 背板具有面向第一显示面板的第一面和面向第二显示面板的第二面, 所述背板 上设有镂空的通孔, 所述光源组件是灯条, 灯条上设有若干发光体, 其中, 一 部分灯条贴于第一面且灯条上的发光体设于通孔中照射于第二显示面板, 一部 分灯条贴于第二面且灯条上的发光体设于通孔中照射于第一显示面板。
2、 根据权利要求 1所述的用于双面显示的直下式背光结构, 其中, 所述灯 条通过导热胶粘于背板的第一面和第二面, 或通过灯条两侧与背板的卡勾结构 固定。
3、 根据权利要求 1所述的用于双面显示的直下式背光结构, 其中, 所述背 板的通孔内壁为斜面, 通孔的开口自灯条底部向照射面逐渐增大。
4、 根据权利要求 1所述的用于双面显示的直下式背光结构, 其中, 所述灯 条的发光体为 LED灯, 所述 LED灯表面设有散光结构。
5、 根据权利要求 2所述的用于双面显示的直下式背光结构, 其中, 所述灯 条的发光体为 LED灯, 所述 LED灯表面设有散光结构。
6、 根据权利要求 3所述的用于双面显示的直下式背光结构, 其中, 所述灯 条的发光体为 LED灯, 所述 LED灯表面设有散光结构。
7、 根据权利要求 4所述的用于双面显示的直下式背光结构, 其中, 所述散 光结构为 LED灯封装的二次透镜。
8、 根据权利要求 5所述的用于双面显示的直下式背光结构, 其中, 所述散 光结构为 LED灯封装的二次透镜。
9、 根据权利要求 6所述的用于双面显示的直下式背光结构, 其中, 所述散 光结构为 LED灯封装的二次透镜。
10、 一种用于双面显示的直下式背光结构, 包括第一显示面板、 第二显示 面板和设于第一显示面板和第二显示面板之间的光源组件, 其中, 所述光源组 件为 LED灯板, 所述 LED灯板包括第一面和第二面, 其中第一面设有 LED灯 并照射于第一显示面板, LED灯板还设有镂空的通孔,所述光源组件还包括 LED 灯条, LED灯条贴于 LED灯板的第一面且 LED灯条上 LED灯设于通孔中照射
11、 根据权利要求 10所述的用于双面显示的直下式背光结构, 其中, 所述 LED灯条通过导热胶粘于 LED灯板上, 或通过 LED灯条两侧与 LED灯板的卡 勾结构固定。
12、 根据权利要求 10所述的用于双面显示的直下式背光结构, 其中, 所述 LED灯板的通孔内壁为斜面,通孔的开口自 LED灯条底部向第二显示面板逐渐 增大。
13、 根据权利要求 6所述的用于双面显示的直下式背光结构, 其中, 所述 LED灯表面设有散光结构。
14、 根据权利要求 7所述的用于双面显示的直下式背光结构, 其中, 所述 LED灯表面设有散光结构。
15、 根据权利要求 8所述的用于双面显示的直下式背光结构, 其中, 所述 LED灯表面设有散光结构。
16、 根据权利要求 13所述的用于双面显示的直下式背光结构, 其中, 所述 散光结构为 LED灯封装的二次透镜。
17、 根据权利要求 14所述的用于双面显示的直下式背光结构, 其中, 所述 散光结构为 LED灯封装的二次透镜。
18、 根据权利要求 15所述的用于双面显示的直下式背光结构, 其中, 所述 散光结构为 LED灯封装的二次透镜。
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CN104359053A (zh) * | 2014-12-08 | 2015-02-18 | 合肥鑫晟光电科技有限公司 | 一种背光模组及其工作方法、显示装置 |
CN104791671A (zh) * | 2015-05-08 | 2015-07-22 | 京东方科技集团股份有限公司 | 一种背光源、测试系统及其测试方法和显示装置 |
CN105717706A (zh) * | 2016-04-28 | 2016-06-29 | 青岛海信电器股份有限公司 | 一种双面背光源及双面显示装置 |
CN108490516A (zh) * | 2018-03-27 | 2018-09-04 | 惠州市华星光电技术有限公司 | 透镜、led光源及双面显示器 |
CN109767700B (zh) * | 2019-03-27 | 2021-11-16 | 深圳市恒利普智能显示有限公司 | 显示屏 |
CN110021247A (zh) * | 2019-03-31 | 2019-07-16 | 方迪勇 | 一种模块化灯箱的长条形套件和发光模块 |
CN114203749B (zh) * | 2021-12-10 | 2023-08-01 | 深圳市华星光电半导体显示技术有限公司 | 双面显示面板和双面显示装置 |
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