CN116638839A - 用于车载mini LED的PC发泡复合板、制备方法及应用 - Google Patents
用于车载mini LED的PC发泡复合板、制备方法及应用 Download PDFInfo
- Publication number
- CN116638839A CN116638839A CN202310527401.1A CN202310527401A CN116638839A CN 116638839 A CN116638839 A CN 116638839A CN 202310527401 A CN202310527401 A CN 202310527401A CN 116638839 A CN116638839 A CN 116638839A
- Authority
- CN
- China
- Prior art keywords
- composite board
- mini led
- foaming
- vehicle
- parts
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 78
- 238000005187 foaming Methods 0.000 title claims abstract description 40
- 238000002360 preparation method Methods 0.000 title abstract description 6
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 30
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 30
- 239000004088 foaming agent Substances 0.000 claims abstract description 26
- 238000009792 diffusion process Methods 0.000 claims abstract description 24
- 239000002270 dispersing agent Substances 0.000 claims abstract description 17
- 239000002667 nucleating agent Substances 0.000 claims abstract description 11
- 239000006260 foam Substances 0.000 claims description 42
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical group [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical group [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- LAQFLZHBVPULPL-UHFFFAOYSA-N methyl(phenyl)silicon Chemical group C[Si]C1=CC=CC=C1 LAQFLZHBVPULPL-UHFFFAOYSA-N 0.000 claims description 3
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 12
- 239000000463 material Substances 0.000 abstract description 6
- 239000000758 substrate Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 6
- 238000009826 distribution Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 229920012699 PC light diffusion Polymers 0.000 description 4
- 238000000227 grinding Methods 0.000 description 3
- 230000001795 light effect Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 238000009966 trimming Methods 0.000 description 2
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical group [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 238000010023 transfer printing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/065—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
- B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
- G02B5/0247—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element by means of voids or pores
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0268—Diffusing elements; Afocal elements characterized by the fabrication or manufacturing method
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0273—Diffusing elements; Afocal elements characterized by the use
- G02B5/0294—Diffusing elements; Afocal elements characterized by the use adapted to provide an additional optical effect, e.g. anti-reflection or filter
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/04—Prisms
- G02B5/045—Prism arrays
-
- 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
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- 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
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2266/00—Composition of foam
- B32B2266/02—Organic
- B32B2266/0214—Materials belonging to B32B27/00
- B32B2266/0264—Polyester
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/718—Weight, e.g. weight per square meter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
- B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2605/00—Vehicles
Abstract
本发明揭示了一种用于车载mini LED的PC发泡复合板、制备方法及应用,其中,用于车载mini LED的PC发泡复合板依次层叠设置的扩散层、发泡层以及棱台层;扩散层包括以下重量份的组分:99.4份‑99.8份PC,0.1份‑0.5份扩散剂,0.1份‑0.5份抗氧化剂;发泡层包括以下重量份的组分:99.4份‑99.8份PC,0.5份‑2份发泡剂,0.1份‑0.5份抗氧化剂,0.1份‑0.5份成核剂;棱台层包括以下重量份的组分:99.4份‑99.8份PC,0.1份‑0.5份扩散剂,0.1份‑0.5份抗氧化剂。本申请通过在PC基材内参杂发泡剂,从而形成发泡层,提高了PC发泡复合板的匀光效果的同时,并且还设置了多个棱台槽,从而使得车载mini LED背光结构只需一张匀光膜,甚至无需匀光膜,也具有良好的匀光效果,降低了车载mini LED背光结构的成本。
Description
技术领域
本发明涉及发泡复合板技术领域,具体地,涉及一种用于车载mini LED的PC发泡复合板、制备方法及应用。
背景技术
PC光扩散板和匀光膜是车载mini LED背光结构的主要结构。PC光扩散板是一种广泛应用在车载液晶显示、LED照明及成像显示系统中的光学器件。PC光扩散板的作用原理是,通过在PC基材中添加扩散剂颗粒,利用光线在行进途中遇到两个折射率相异的介质时,发生折射、反射与散射的物理现象,从而改变光的行进路线,实现入射光充分色以此产生光学扩散的效果。
现有的车载mini LED显示器,由于mini LED与光扩散板之间的间距较小,且没有光学透镜对光进行二次调节,因而为了较好的显示效果,现有的车载mini LED背光结构包括有多张匀光膜,但是匀光膜的价格较高,增加了车载mini LED背光结构的成本。
发明内容
针对现有技术的不足,本发明提供一种用于车载mini LED的PC发泡复合板、制备方法及应用。
本发明公开的一种用于车载mini LED的PC发泡复合板包括依次层叠设置的扩散层、发泡层以及棱台层,发泡层内具有气泡,棱台层的入光面设有多个棱台槽,多个棱台槽阵列式分布在棱台层的表面;
扩散层包括以下重量份的组分:99.4份-99.8份PC,0.1份-0.5份扩散剂,0.1份-0.5份抗氧化剂;
发泡层包括以下重量份的组分:99.4份-99.8份PC,0.5份-2份发泡剂,0.1份-0.5份抗氧化剂,0.1份-0.5份成核剂;
棱台层包括以下重量份的组分:99.4份-99.8份PC,0.1份-0.5份扩散剂,0.1份-0.5份抗氧化剂。
根据本发明一实施方式,扩散剂为甲基苯基硅树脂。
根据本发明一实施方式,抗氧化剂为抗氧剂B215。
根据本发明一实施方式,发泡剂为碳酸氢钠。
根据本发明一实施方式,成核剂为碳酸钙。
根据本发明一实施方式,用于车载mini LED的PC发泡复合板厚度为1mm-3mm。
一种制备上述的用于车载mini LED的PC发泡复合板的方法包括以下步骤:
按比例配好PC、扩散剂以及抗氧化剂,通过第一螺杆机形成扩散体;
按比例配好PC、发泡剂、抗氧化剂以及成核剂,通过第二螺杆机形成发泡体;
按比例配好PC、扩散剂以及抗氧化剂,通过第三螺杆机形成棱台体;
在PC基材内参杂发泡剂扩散体、在PC基材内参杂发泡剂发泡体以及在PC基材内参杂发泡剂棱台体沿不同的流道进入至模具内复合塑化,复合时,在PC基材内参杂发泡剂扩散体覆盖在在PC基材内参杂发泡剂发泡体上,在PC基材内参杂发泡剂发泡体覆盖在在PC基材内参杂发泡剂棱台体上,以形成预制复合板;
对在PC基材内参杂发泡剂预制复合板的入光面和出光面进行微结构处理,获得在PC基材内参杂发泡剂用于车载mini LED的PC发泡复合板。
根据本发明一实施方式,利用辊筒组件对预制复合板的入光面和出光面进行微结构处理。
根据本发明一实施方式,对在PC基材内参杂发泡剂预制复合板的入光面和出光面进行微结构处理包括以下子步骤:
对在PC基材内参杂发泡剂预制复合板的入光面进行微结构处理,使其表面形成棱台槽;
对在PC基材内参杂发泡剂预制复合板的出光面进行微结构处理,使其表面形成磨砂纹路。
一种车载mini LED背光结构,包括上述的用于车载mini LED的PC发泡复合板。
本申请的有益效果在于:通过在PC基材内参杂发泡剂,从而形成发泡层,提高了PC发泡复合板的匀光效果的同时,还降低了其重量,并且还设置了多个棱台槽,起到透镜的分光作用,进一步提高了PC发泡复合板的匀光效果,从而使得车载mini LED背光结构只需一张匀光膜,甚至无需匀光膜,也具有良好的匀光效果,降低了车载mini LED背光结构的成本。
附图说明
此处所说明的附图用来提供对本申请的进一步理解,构成本申请的一部分,本申请的示意性实施例及其说明用于解释本申请,并不构成对本申请的不当限定。在附图中:
图1为实施例中用于车载mini LED的PC发泡复合板的层级结构示意图;
图2为实施例中模具和辊筒组件的结构示意图;
图3为PC板在单灯条件下的外观图;
图4为PC板在单灯条件下的能量分布图;
图5为用于车载mini LED的PC发泡复合板在单灯条件下的外观图;
图6为用于车载mini LED的PC发泡复合板在单灯条件下的能量分布图;
图7为用于车载mini LED的PC发泡复合板的实物图;
图8为用于车载mini LED的PC发泡复合板的实物图放大图之一;
图9为用于车载mini LED的PC发泡复合板的实物图放大图之二;
图10为实施例中车载mini LED背光结构的剖视图。
具体实施方式
以下将以图式揭露本发明的多个实施方式,为明确说明起见,许多实务上的细节将在以下叙述中一并说明。然而,应了解到,这些实务上的细节不应用以限制本发明。也就是说,在本发明的部分实施方式中,这些实务上的细节是非必要的。此外,为简化图式起见,一些习知惯用的结构与组件在图式中将以简单的示意的方式绘示之。
需要说明,本发明实施例中所有方向性指示诸如上、下、左、右、前、后……仅用于解释在某一特定姿态如附图所示下各部件之间的相对位置关系、运动情况等,如果该特定姿态发生改变时,则该方向性指示也相应地随之改变。
另外,在本发明中如涉及“第一”、“第二”等的描述仅用于描述目的,并非特别指称次序或顺位的意思,亦非用以限定本发明,其仅仅是为了区别以相同技术用语描述的组件或操作而已,而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此,限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外,各个实施例之间的技术方案可以相互结合,但是必须是以本领域普通技术人员能够实现为基础,当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在,也不在本发明要求的保护范围之内。
为能进一步了解本发明的发明内容、特点及功效,兹例举以下实施例,并配合附图详细说明如下:
实施例一
参照图1,图1为实施例中用于车载mini LED的PC发泡复合板的层级结构示意图。本实施例中的一种用于车载mini LED的PC发泡复合板包括依次层叠设置的扩散层1、发泡层2以及棱台层3,发泡层2内具有气泡21,棱台层3的入光面设有多个棱台槽31,多个棱台槽31阵列式分布在棱台层3的表面;扩散层1包括以下重量份的组分:99.4份-99.8份PC,0.1份-0.5份扩散剂,0.1份-0.5份抗氧化剂;发泡层2包括以下重量份的组分:99.4份-99.8份PC,0.5份-2份发泡剂,0.1份-0.5份抗氧化剂,0.1份-0.5份成核剂;棱台层3包括以下重量份的组分:99.4份-99.8份PC,0.1份-0.5份扩散剂,0.1份-0.5份抗氧化剂。
优选的,扩散剂为甲基苯基硅树脂,抗氧化剂为抗氧剂B215,发泡剂为碳酸氢钠,成核剂为碳酸钙。用于车载mini LED的PC发泡复合板厚度为1mm-3mm。
扩散层1远离发泡层2的一面设置有磨砂纹路。磨砂纹路具有防刮、耐刮且防雾化的效果,在保证扩散层1表面对光的分散性能、折射性能及穿、透射性能的同时,延长了光扩散板的使用寿命,当扩散层1表面与其他物体表面发生摩擦后,由于扩散层1具有一定的粗糙度,扩散层1表面的磨砂纹路首先发生磨损,使得扩散层1层内的结构得到了间接的保护,因此光学性能更难发生改变,从而光扩散板遭受损坏的概率将会更小。
现有的传统的PC光扩散板,其板材本体与光学散光颗粒介质间的相对折射率为1.59/1.42,而本申请的光扩散板结构,其板材本体与内部形成的气泡21之间相对折射率1.59/1,从而前者的全反射角a1=arcsin(1.42/1.59)≈63.3°,后者的全反射角a2=arcsin(1/1.59)≈39°,因此传统的PC光扩散板,光线到内部颗粒中发生全反射的范围在63.3°—116.7°,而本申请的PC发泡光扩散板,光线到气泡21中发生全反射的范围在39°—141°,相较于传统的扩散板扩散角更大,从而将LED的角度打的更开。
棱台槽31的下底面与棱台层3远离发泡层2的一面连通。在本实施例中,棱台槽31的下底面的面积大于其上底面面积。棱台槽31为三棱台形槽、四棱台形槽、五棱台形槽或六棱台形槽,优选的,棱台槽31为四棱台形槽。在本实施例中,棱台槽31为正四棱台形槽。棱台槽31侧面和下底面之间的夹角为30°~60°,优选的,棱台槽31侧面和下底面之间的夹角为30°、45°或60°。棱台槽31起到透镜的作用,光线透过棱台槽31时,发生折射和反射,从而对光线进行扩散匀光。
实施例二
一种用于车载mini LED的PC发泡复合板的制备方法,其用于实施例一中的用于车载mini LED的PC发泡复合板,其包括以下步骤:
S1:按比例配好PC、扩散剂以及抗氧化剂,通过第一螺杆机形成扩散体。
S2:按比例配好PC、发泡剂、抗氧化剂以及成核剂,通过第二螺杆机形成发泡体。
S3:按比例配好PC、扩散剂以及抗氧化剂,通过第三螺杆机形成棱台体。
S4:扩散体、发泡体以及棱台体沿不同的流道进入至模具100内复合塑化,复合时,扩散体覆盖在发泡体上,发泡体覆盖在棱台体上,以形成预制复合板。
S5:对预制复合板的入光面和出光面进行微结构处理,获得用于车载mini LED的PC发泡复合板。
具体的,在步骤S1中,按照99.4份-99.8份PC,0.1份-0.5份扩散剂,0.1份-0.5份抗氧化剂的比例,采用自动配料秤进行配料。
具体的,在步骤S2中,按照99.4份-99.8份PC,0.5份-2份发泡剂,0.1份-0.5份抗氧化剂,0.1份-0.5份成核剂的比例,采用自动配料秤进行配料,第二螺杆机为背压设计。
具体的,在步骤S3中,按照99.4份-99.8份PC,0.1份-0.5份扩散剂,0.1份-0.5份抗氧化剂的比例,采用自动配料秤进行配料。
在具体应用时,步骤S1、步骤S2以及步骤S3同时进行。
具体的,在步骤S5包括以下子步骤:
S51:对预制复合板的入光面进行微结构处理,使其表面形成棱台槽。
S52:对预制复合板的出光面进行微结构处理,使其表面形成磨砂纹路。
S53:冷却定型,在线切边。
S54:获得用于车载mini LED的PC发泡复合板。
参照图2,图2为实施例中模具和辊筒组件的结构示意图。优选的,采用辊筒组件200对预制复合板的入光面进行微结构处理,辊筒组件200包括磨砂辊件201、棱台辊件202以及细纹辊件203,磨砂辊件201表面设有磨砂转印纹路,棱台辊件202表面设有棱台。在步骤S51和步骤S52中,预制复合板自模具100流延至辊筒组件200后,预制复合板尚未固化定型,流经辊筒组件200时,磨砂辊件201将磨砂纹路转印至扩散层1的出光面上,从而在扩散层1的出光面形成磨砂纹路,棱台辊件202通过棱台在棱台体的入光面形成棱台槽31,从而在棱台层3的入光面形成多个棱台槽31。在实际应用时,步骤S51和步骤S52可同时进行,且辊筒组件200内部有温度控制件(图中未显示),使得辊筒组件200对预制复合板进行微结构处理的同时,还可以对预制复合板进行冷却降温。
在步骤S53中,在线切边后的废料可进行回收利用。
参照图3-6,图3为PC板在单灯条件下的外观图,图4为PC板在单灯条件下的能量分布图,图5为用于车载mini LED的PC发泡复合板在单灯条件下的外观图,图6为用于车载mini LED的PC发泡复合板在单灯条件下的能量分布图。由图中可以看出,用于车载miniLED的PC发泡复合板具有较好的雾化效果,且能量分布较为均匀,说明本申请中的用于车载mini LED的PC发泡复合板具有较好的匀光效果。
参照图7-9,图7为用于车载mini LED的PC发泡复合板的实物图,图8为用于车载mini LED的PC发泡复合板的实物图放大图之一,图9为用于车载mini LED的PC发泡复合板的实物图放大图之二。从图中可以看出,本申请中的PC发泡复合板内部具有椭圆形气泡。
实施例三
参照图1和图10,图10为实施例中车载mini LED背光结构的剖视图,一种车载miniLED背光结构包括上述的用于车载mini LED的PC发泡复合板以及至少一张棱镜膜4以及发光件5,棱镜膜4覆盖在扩散层1上,发光件5设于棱台层3的一侧,并正对于棱台槽31。当棱镜膜4在背光源中使用时,从光源射入的光在通过棱镜膜4的棱镜结构时,只有入射光在某一角度范围之内的光才可以通过折射作用出射,其余的光因不满足折射条件而被棱镜边沿反射回光源,再由光源底部的反射片作用而重新出射,这样,背光源中的光线在棱镜结构的作用下,不断的循环利用,原本向各个方向发散的光线在通过棱镜膜后,被控制到70°的角度范围内,从而达到轴向亮度增强的效果。在本实施例中,棱镜膜4的数量为一张,在实际应用时,棱镜膜4的数量可以根据具体的使用情况而定,此处不做限定。
优选的,车载mini LED背光结构还包括匀光膜6,匀光膜6设于棱镜膜4和扩散层1之间。通过设置匀光膜6,可以进一步增加车载mini LED背光结构的匀光性。在实际应用时,是否需要增加匀光膜,视发光件5和PC发泡复合板之间的距离而定。
综上,本申请通过在PC基材内参杂发泡剂,从而形成发泡层,提高了PC发泡复合板的匀光效果的同时,还降低了其重量,并且还设置了多个棱台槽,起到透镜的分光作用,进一步提高了PC发泡复合板的匀光效果,从而使得车载mini LED背光结构只需一张匀光膜,甚至无需匀光膜,也具有良好的匀光效果,降低了车载mini LED背光结构的成本。
上仅为本发明的实施方式而已,并不用于限制本发明。对于本领域技术人员来说,本发明可以有各种更改和变化。凡在本发明的精神和原理的内所作的任何修改、等同替换、改进等,均应包括在本发明的权利要求范围之内。
Claims (10)
1.一种用于车载mini LED的PC发泡复合板,其特征在于,包括依次层叠设置的扩散层(1)、发泡层(2)以及棱台层(3),所述发泡层(2)内具有气泡(21),所述棱台层(3)的入光面设有多个棱台槽(31),多个所述棱台槽(31)阵列式分布在所述棱台层(3)的表面;
所述扩散层(1)包括以下重量份的组分:99.4份-99.8份PC,0.1份-0.5份扩散剂,0.1份-0.5份抗氧化剂;
所述发泡层(2)包括以下重量份的组分:99.4份-99.8份PC,0.5份-2份发泡剂,0.1份-0.5份抗氧化剂,0.1份-0.5份成核剂;
所述棱台层(3)包括以下重量份的组分:99.4份-99.8份PC,0.1份-0.5份扩散剂,0.1份-0.5份抗氧化剂。
2.根据权利要求1所述的用于车载mini LED的PC发泡复合板,其特征在于,所述扩散剂为甲基苯基硅树脂。
3.根据权利要求1所述的用于车载mini LED的PC发泡复合板,其特征在于,所述抗氧化剂为抗氧剂B215。
4.根据权利要求1所述的用于车载mini LED的PC发泡复合板,其特征在于,所述发泡剂为碳酸氢钠。
5.根据权利要求1所述的用于车载mini LED的PC发泡复合板,其特征在于,所述成核剂为碳酸钙。
6.根据权利要求1所述的用于车载mini LED的PC发泡复合板,其特征在于,其厚度为1mm-3mm。
7.一种制备权利要求1-6任一所述的用于车载mini LED的PC发泡复合板的方法,其特征在于,包括以下步骤:
按比例配好PC、扩散剂以及抗氧化剂,通过第一螺杆机形成扩散体;
按比例配好PC、发泡剂、抗氧化剂以及成核剂,通过第二螺杆机形成发泡体;
按比例配好PC、扩散剂以及抗氧化剂,通过第三螺杆机形成棱台体;
所述扩散体、所述发泡体以及所述棱台体沿不同的流道进入至模具内复合塑化,复合时,所述扩散体覆盖在所述发泡体上,所述发泡体覆盖在所述棱台体上,以形成预制复合板;
对所述预制复合板的入光面和出光面进行微结构处理,获得所述用于车载mini LED的PC发泡复合板。
8.根据权利要求7所述的用于车载mini LED的PC发泡复合板的制备方法,其特征在于,利用辊筒组件对所述预制复合板的入光面和出光面进行微结构处理。
9.根据权利要求7所述的用于车载mini LED的PC发泡复合板的制备方法,其特征在于,对所述预制复合板的入光面和出光面进行微结构处理包括以下子步骤:
对所述预制复合板的入光面进行微结构处理,使其表面形成棱台槽;
对所述预制复合板的出光面进行微结构处理,使其表面形成磨砂纹路。
10.一种车载mini LED背光结构,其特征在于,包括权利要求1-6任一所述的用于车载mini LED的PC发泡复合板。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202310527401.1A CN116638839A (zh) | 2023-05-10 | 2023-05-10 | 用于车载mini LED的PC发泡复合板、制备方法及应用 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202310527401.1A CN116638839A (zh) | 2023-05-10 | 2023-05-10 | 用于车载mini LED的PC发泡复合板、制备方法及应用 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN116638839A true CN116638839A (zh) | 2023-08-25 |
Family
ID=87618039
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202310527401.1A Pending CN116638839A (zh) | 2023-05-10 | 2023-05-10 | 用于车载mini LED的PC发泡复合板、制备方法及应用 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN116638839A (zh) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101196575A (zh) * | 2006-12-08 | 2008-06-11 | 鸿富锦精密工业(深圳)有限公司 | 光学板 |
CN207682947U (zh) * | 2017-10-25 | 2018-08-03 | 苏州市三鑫塑业有限公司 | 成型光扩散板透镜微结构的压花辊组件 |
CN215986587U (zh) * | 2021-08-03 | 2022-03-08 | 惠州市银山光电有限公司 | 一种发泡光扩散板及led背光板 |
CN115061228A (zh) * | 2022-07-05 | 2022-09-16 | 常州奥智高分子集团股份有限公司 | 微发泡扩散板的生产工艺 |
-
2023
- 2023-05-10 CN CN202310527401.1A patent/CN116638839A/zh active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101196575A (zh) * | 2006-12-08 | 2008-06-11 | 鸿富锦精密工业(深圳)有限公司 | 光学板 |
CN207682947U (zh) * | 2017-10-25 | 2018-08-03 | 苏州市三鑫塑业有限公司 | 成型光扩散板透镜微结构的压花辊组件 |
CN215986587U (zh) * | 2021-08-03 | 2022-03-08 | 惠州市银山光电有限公司 | 一种发泡光扩散板及led背光板 |
CN115061228A (zh) * | 2022-07-05 | 2022-09-16 | 常州奥智高分子集团股份有限公司 | 微发泡扩散板的生产工艺 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR100977321B1 (ko) | 광 투과성 수지판 | |
US7719631B2 (en) | Optical sheet, backlight and liquid crystal display apparatus | |
US7695167B2 (en) | Optical sheet, backlight and liquid crystal display apparatus | |
USRE38243E1 (en) | Plane light source unit | |
CN100403060C (zh) | 透明聚合物膜 | |
CN102308232B (zh) | 光学部件、照明装置及显示装置 | |
US8851735B2 (en) | Uniform reflective light-guide apparatus, and backlight module and LCD device having the same | |
CN101606020A (zh) | 面光源和使用其的液晶显示装置 | |
KR20080012252A (ko) | 액정 표시 장치, 광학 시트의 제조 방법 및 광학 시트 | |
US7699503B2 (en) | Light control film and backlight unit using the same | |
KR20110036673A (ko) | 광학 유닛 및 이것을 사용한 백라이트 유닛 | |
KR20090108606A (ko) | 폴리머 필름 | |
KR20090038018A (ko) | 직하형 백라이트 장치 | |
JP5279015B2 (ja) | 導光板 | |
US20140009960A1 (en) | Backlight device | |
CN110764168A (zh) | 一种光学透镜结构、背光模组及透镜成型方法 | |
JP2011503771A (ja) | 変動する厚さを持つ光源 | |
JP2007103325A (ja) | 照明装置これが備える光制御部材及びこれを用いた画像表示装置 | |
CN116638839A (zh) | 用于车载mini LED的PC发泡复合板、制备方法及应用 | |
CN215986587U (zh) | 一种发泡光扩散板及led背光板 | |
JP4778279B2 (ja) | 光ミキシング素子及びそれを用いた面光源装置 | |
CN220280804U (zh) | 车载mini LED背光结构 | |
KR100963106B1 (ko) | 백라이트유니트용 광확산 시트 및 광학 시트 | |
WO2009110379A1 (ja) | 直下型バックライト装置 | |
JP7244204B2 (ja) | 光学シート、面光源装置、映像源ユニット、及び表示装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination |