WO2018032914A1 - 导光板、背光模组及显示装置 - Google Patents
导光板、背光模组及显示装置 Download PDFInfo
- Publication number
- WO2018032914A1 WO2018032914A1 PCT/CN2017/092618 CN2017092618W WO2018032914A1 WO 2018032914 A1 WO2018032914 A1 WO 2018032914A1 CN 2017092618 W CN2017092618 W CN 2017092618W WO 2018032914 A1 WO2018032914 A1 WO 2018032914A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- light guide
- guide plate
- light
- light source
- plate according
- Prior art date
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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
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
-
- 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
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0045—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide
- G02B6/0046—Tapered light guide, e.g. wedge-shaped light guide
-
- 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
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0045—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide
-
- 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
- G02B6/0065—Manufacturing aspects; Material aspects
-
- 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
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
- G02B6/0061—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide to provide homogeneous light output intensity
Definitions
- a backlight module is further provided, and such a backlight module includes the light guide plate described in any of the above embodiments.
- a display device includes the above backlight module.
- the first surface 1 further includes a light source bright area 6 and a light source dark area 5, wherein the light source dark area 5 is located on a side of the light source bright area 6 away from the first side surface 3, that is, in the figure, the light source dark area 5 is located in the light source bright area 6 On the right side.
- an optical structure for changing the angle at which light is emitted from the first surface 1 is provided on the dark region 5 of the light source (refer to FIGS. 2-4).
- the above optical structure may be selected in a plurality of specific configurations as long as the angle at which light is emitted from the dark area 5 of the light source on the first surface 1 can be changed to improve light utilization.
- the optical structure is selected to be a curved surface structure 10 that is recessed inside the body of the light guide.
- the curved structure 10 assumes an axisymmetric structure with the second axis 20 as an axis of symmetry.
- the portions of the curved structure 10 on either side of the second axis 20 will have the same light extraction rate, thereby ensuring uniformity of the outgoing light from the dark region 5 of the light source.
- the direction of incidence of the light is indicated by a thick arrow in the figure.
- the dot structure may be designed to be more and more dense along the first direction.
- the backlight module further includes the light guide plate described in any of the above embodiments.
- a light guide plate includes a light guide plate main body, and an optical structure for changing an angle at which light is emitted from the light exit surface is further provided in a dark area of the light source on the light exit surface of the light guide plate main body.
- the arrangement of such an optical structure changes the angle at which light exits the light exiting surface, thereby breaking The total reflection of light in the light guide plate propagates. As a result, more light is emitted from the light exit surface, thereby improving light utilization and avoiding display dark areas of the side-entry backlight.
Abstract
Description
Claims (11)
- 一种导光板,包括导光板主体,所述导光板主体包括:作为出光面的第一表面;与所述第一表面相对设置的第二表面;以及与所述第一表面相邻并且作为入光面的第一侧面,其中所述第一表面包括光源亮区和光源暗区,所述光源暗区位于所述光源亮区远离所述第一侧面的一侧,并且在所述光源暗区中设有用于改变光线从所述第一表面出射的角度的光学结构。
- 根据权利要求1所述的导光板,其中所述光学结构包括向所述导光板主体内部凹入的曲面结构。
- 根据权利要求2所述的导光板,其中所述导光板主体还包括与所述第一侧面相对设置的第二侧面,并且所述曲面结构的凹入深度在从所述第一侧面到所述第二侧面的第一方向上逐渐增大。
- 根据权利要求2所述的导光板,其中所述导光板主体还包括与所述第一侧面相对设置的第二侧面,所述光源亮区位于所述第一表面的中心位置处,在从所述第一侧面到所述第二侧面的第一方向上,所述光源亮区的第一宽度为所述导光板主体的第一宽度的1/5~4/5,并且在与所述第一方向垂直的第二方向上,所述光源亮区的第二宽度为所述导光板主体的第二宽度的1/5~4/5。
- 根据权利要求2所述的导光板,其中所述导光板主体还包括与所述第一侧面相对设置的第二侧面,并且在从所述第一侧面到所述第二侧面的第一方向上,所述曲面结构与所述第一表面具有共同的对称轴。
- 根据权利要求1所述的导光板,其中所述第二表面上设有用于改变光线从所述第一表面出射的角度的网点结构。
- 根据权利要求6所述的导光板,其中所述导光板主体还包括与所述第一侧面相对设置的第二侧面,并且在从所述第一侧面到所述第二侧面的第一方向上,所述网点结构的分布密度逐渐递增。
- 根据权利要求1-6中任一项所述的导光板,其中所述导光板主体一体注塑成型。
- 根据权利要求1所述的导光板,其中所述导光板主体由聚碳酸酯或聚甲基丙烯酸甲酯制成。
- 一种背光模组,包括权利要求1-9中任一项所述的导光板。
- 一种显示装置,包括权利要求10所述的背光模组。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/578,182 US10459150B2 (en) | 2016-08-17 | 2017-07-12 | Light guide plate, backlight module and display device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610682264.9 | 2016-08-17 | ||
CN201610682264.9A CN106094096A (zh) | 2016-08-17 | 2016-08-17 | 一种导光板、背光模组及显示装置 |
Publications (1)
Publication Number | Publication Date |
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WO2018032914A1 true WO2018032914A1 (zh) | 2018-02-22 |
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PCT/CN2017/092618 WO2018032914A1 (zh) | 2016-08-17 | 2017-07-12 | 导光板、背光模组及显示装置 |
Country Status (3)
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US (1) | US10459150B2 (zh) |
CN (1) | CN106094096A (zh) |
WO (1) | WO2018032914A1 (zh) |
Families Citing this family (3)
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CN106094096A (zh) * | 2016-08-17 | 2016-11-09 | 京东方科技集团股份有限公司 | 一种导光板、背光模组及显示装置 |
CN107340564A (zh) * | 2017-09-06 | 2017-11-10 | 深圳市超显科技有限公司 | 变量线条结构导光板及光学组件 |
CN111610594B (zh) * | 2020-06-24 | 2022-08-16 | 京东方科技集团股份有限公司 | 背光模组以及显示装置 |
Citations (7)
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CN103221880A (zh) * | 2010-09-09 | 2013-07-24 | Lg伊诺特有限公司 | 具有凹陷控制图案的导光板及使用其的背光单元 |
US20140104876A1 (en) * | 2012-10-16 | 2014-04-17 | Innolux Corporation | Light-guiding plate, light-emitting module and display apparatus |
CN103837923A (zh) * | 2012-11-21 | 2014-06-04 | 鸿富锦精密工业(深圳)有限公司 | 导光板及其加工方法 |
CN103939790A (zh) * | 2013-01-22 | 2014-07-23 | 群创光电股份有限公司 | 显示装置及其发光模块 |
CN103994399A (zh) * | 2014-05-12 | 2014-08-20 | 合肥京东方显示光源有限公司 | 光补偿件、遮光胶带、背光模组及显示装置 |
CN104676296A (zh) * | 2013-11-27 | 2015-06-03 | 扬升照明股份有限公司 | 光源模块 |
CN106094096A (zh) * | 2016-08-17 | 2016-11-09 | 京东方科技集团股份有限公司 | 一种导光板、背光模组及显示装置 |
Family Cites Families (4)
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JP2006012509A (ja) | 2004-06-24 | 2006-01-12 | Alps Electric Co Ltd | 導光板及びそれを用いた面発光装置 |
CN201078650Y (zh) * | 2007-08-03 | 2008-06-25 | 科桥电子股份有限公司 | 导光板 |
JP5553077B2 (ja) * | 2012-03-15 | 2014-07-16 | オムロン株式会社 | 面光源装置 |
CN204494198U (zh) * | 2015-01-14 | 2015-07-22 | 上海向隆电子科技有限公司 | 光源模组及导光板 |
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2016
- 2016-08-17 CN CN201610682264.9A patent/CN106094096A/zh active Pending
-
2017
- 2017-07-12 WO PCT/CN2017/092618 patent/WO2018032914A1/zh active Application Filing
- 2017-07-12 US US15/578,182 patent/US10459150B2/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103221880A (zh) * | 2010-09-09 | 2013-07-24 | Lg伊诺特有限公司 | 具有凹陷控制图案的导光板及使用其的背光单元 |
US20140104876A1 (en) * | 2012-10-16 | 2014-04-17 | Innolux Corporation | Light-guiding plate, light-emitting module and display apparatus |
CN103837923A (zh) * | 2012-11-21 | 2014-06-04 | 鸿富锦精密工业(深圳)有限公司 | 导光板及其加工方法 |
CN103939790A (zh) * | 2013-01-22 | 2014-07-23 | 群创光电股份有限公司 | 显示装置及其发光模块 |
CN104676296A (zh) * | 2013-11-27 | 2015-06-03 | 扬升照明股份有限公司 | 光源模块 |
CN103994399A (zh) * | 2014-05-12 | 2014-08-20 | 合肥京东方显示光源有限公司 | 光补偿件、遮光胶带、背光模组及显示装置 |
CN106094096A (zh) * | 2016-08-17 | 2016-11-09 | 京东方科技集团股份有限公司 | 一种导光板、背光模组及显示装置 |
Also Published As
Publication number | Publication date |
---|---|
CN106094096A (zh) | 2016-11-09 |
US10459150B2 (en) | 2019-10-29 |
US20180292596A1 (en) | 2018-10-11 |
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