CN115431155A - 一种解决背光源进光侧发黄的方法 - Google Patents

一种解决背光源进光侧发黄的方法 Download PDF

Info

Publication number
CN115431155A
CN115431155A CN202211127399.0A CN202211127399A CN115431155A CN 115431155 A CN115431155 A CN 115431155A CN 202211127399 A CN202211127399 A CN 202211127399A CN 115431155 A CN115431155 A CN 115431155A
Authority
CN
China
Prior art keywords
light
guide plate
light guide
polishing
light inlet
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
Application number
CN202211127399.0A
Other languages
English (en)
Inventor
吕虎龙
林华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xingyuan Electronic Technology Shenzhen Co Ltd
Original Assignee
Xingyuan Electronic Technology Shenzhen Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Xingyuan Electronic Technology Shenzhen Co Ltd filed Critical Xingyuan Electronic Technology Shenzhen Co Ltd
Priority to CN202211127399.0A priority Critical patent/CN115431155A/zh
Publication of CN115431155A publication Critical patent/CN115431155A/zh
Pending legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B29/00Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
    • B24B29/02Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B1/00Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light 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
    • G02B6/0013Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002Means for improving the coupling-in of light from the light source into 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, e.g. with collimating, focussing or diverging surfaces
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light 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
    • G02B6/0065Manufacturing aspects; Material aspects
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/1303Apparatus specially adapted to the manufacture of LCDs
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133606Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133611Direct backlight including means for improving the brightness uniformity

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Mathematical Physics (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

本发明设计导光板加工技术领域,公开了本发明提出的一种解决背光源进光侧发黄的方法,包括如下步骤:S1.模具加工,根据图纸要求加工模具;S2.注塑成型,将模具安装在注塑机上进行注塑,然后冷却成型得到导光板;S3.导光板进光面二次加工,采用抛光工艺抛光导光板进光面加工形成微锯齿面。本发明通过采用上述技术方案,利用抛光方式加工导光板进光面,让进光面的表面粗糙没有规律,破坏棱镜的色散,增加光线漫反射,从而使光线进入导光板后混光更充分,让进光侧发出的光线更加均匀,有效避免进光端出现偏黄的现象。

Description

一种解决背光源进光侧发黄的方法
技术领域
本发明涉及导光板加工技术领域,尤其涉及一种解决背光源进光侧发黄的方法。
背景技术
随着电子科技的发展,平板显示器的市场迅速扩大,其中液晶显示器要求具有厚度薄,质量轻,功耗低等特点,背光模组为液晶显示器提供光源,背光源的性能的好坏直接影响到液晶显示器的质量,提高背光模组的性能对于液晶显示行业有着深远的影响。背光模组根据光源分布位置不同可分为直下式和侧入式。行业常用的是侧入式背光源,侧入式背光源就是光源置于背光模具的侧边,LED发出光后通过导光板改变光的传输方向并将光均匀分布,经过扩散膜和增光膜将光线汇聚在发光区域内并达到一定的辉度标准。因此,导光板的效果直接决定了背光源液晶模的视觉效果和辉度,导光板是一种将点光源或者线光源转变为面光源的高技术产品,主要用于显示行业的背光源,随着市场的需要,背光源要求超薄,超亮,导光均匀,节能环保,完美的视觉效果。行业采用侧入式的背光模组,侧入式背光模组的LED光源位于导光板的一侧,LED发出的光在导光板板中传播,传播路径会经过不同面的反射和全反射,影响导光板光学性能有三个面(如说明书附图中的图1):进光面a、出光面b和网点面c,网点面c和出光面b相对,进光面a的结构直接影响LED发出的光线进入导光板中方向和强度。目前导光板的进光面设有有锯齿结构,锯齿结构有圆弧和梯形等形状,现阶段,导光板的锯齿结构由模具转印得到,由于模具上锯齿面的加工工艺主要是研磨加工,锯齿面表面的粗糙度RA在0.05um左右。研磨加工后,在锯齿面的表面形成有棱镜的粗糙面,棱镜是顺着砂轮的加工方向规则排布,LED侧发出的光线,在锯齿面棱镜的作用下重新混合,棱镜越规则混合就越差。而且背光源遮光边框越来越窄,混光区也越来越窄,LED发出的光经过规则的棱镜表面,发生色散现象,黄光的波长刚好在中间,域宽大,容易被肉眼感受到的,导致视觉效果呈现偏黄的现象。
如专利号为CN11790957B的中国专利申请,其公开了解决背光LED侧发黄的锯齿工艺,其工艺包括步骤S1:模具加工,根据图纸要求加工模具;步骤S2:锯齿面加工,采用慢走丝方式在模具上加工形成锯齿面,并对锯齿面完成粗化加工;步骤S3:注塑成型,将模具安装在注塑机上进行注塑,然后冷却成型得到锯齿面粗化的导光板。本发明利用慢走丝方式加工锯齿面,脉冲火花放电会蚀除锯齿面,切割锯齿的同时利用放电加工对锯齿面的表面进行粗化,让锯齿面的表面粗糙没有规律,破坏棱镜的色散,增加光线漫反射,从而使光线进入导光板后混光更充分,让LED侧发出的光线更加均匀,进而有效避免出现偏黄的现象。但是慢走丝加工锯齿,其生产模具有寿命,效果容易改变,不易管控,并且采用传统的镶小镶件的方法,容易造成小镶件在模具生产过程中挤压变形,模具生产寿命短,生产工序复杂,加工困难。
发明内容
为解决背景技术中所提出的的技术问题,本发明提供一种解决背光源进光侧发黄的方法。
本发明采用以下技术方案实现:本发明提出的一种解决背光源进光侧发黄的方法,包括如下步骤:
S1.模具加工,根据图纸要求加工模具;
S2.注塑成型,将模具安装在注塑机上进行注塑,然后冷却成型得到导光板;
S3.导光板进光面二次加工,采用抛光工艺抛光导光板进光面加工形成微锯齿面。
通过采用上述技术方案,利用抛光方式加工导光板进光面,让进光面的表面粗糙没有规律,破坏棱镜的色散,增加光线漫反射,从而使光线进入导光板后混光更充分,让进光侧发出的光线更加均匀,有效避免进光端出现偏黄的现象。
优选的,所述进光面的表面粗糙度RA为10um-50um。通过采用上述技术方案,导光板进光面的表面粗糙度RA达到30um左右,锯齿面的表面漫反射比达到峰值,漫反射效果好,粗糙度再增加,漫反射比基本无变化。
优选的,抛光主轴转速为4万RPM-10万RPM。抛光主轴转速为4万RPM-10万RPM,经过这样设置,抛光出来的锯齿面的表面粗糙度RA才会达到10um-50um。
优选的,所述抛光刀轮型号为砖石高光两刃铣刀。刀轮型号选用砖石高光两刃铣刀质量好,刀具寿命长,便于控制加工质量,提高抛光稳定性。
优选的,模具无锯齿加工。通过采用上述技术方案,通过模具无锯齿加工方式,缩短模具加工周期。
优选的,所述模具进光侧锯齿拼块不镶小镶件。通过采用上述技术方案,提高模具镶件抗压性,增加模具寿命。
作为上述方案的进一步改进,导光板进光侧抛光方式。通过采用上述技术方案,去除掉导光板成型后毛丝边,影响导光板进光口光学效果。
作为上述方案的进一步改进,所述步骤S3中,抛光进光侧利用控制主轴转速得到需要的导光板进光口粗细度,先通过基恩士3D检测仪对进光口进行检测,得到实际光学效果无发黄亮暗不均的导光板。通过采用上述技术方案,进光口粗细度达到标准才进行生产,提高导光板的成品优良率。
相比现有技术,本发明的有益效果在于:
1.本发明利用抛光机抛光方式加工进光面,让进光面的表面粗细度没有规律,破坏棱镜的色散,增加光线漫反射,使光线进入导光板后混光更充分,让LED侧发出的光线更加均匀,进而有效避免出现偏黄的现象。
2.本发明通过控制刀具主轴转速,进光面的表面粗糙度RA为10um-50um,锯齿面的表面漫反射比达到峰值,漫反射效果好。
3.本发明通过基恩士3D检测仪对进光口粗细度进行检测,便于控制和提高加工精度。
附图说明
图1为本发明提出的导光板的结构示意图;
图2为本发明提出的加工导光板的工艺流程图;
图3为本发明提出的加工导光板用注塑模具结构图;
图4中左侧图为现有导光板的锯齿面设置有锯齿镶件时的结构图;右侧图为本方案提出的导光板的锯齿面的结构示意图。
主要符号说明:
1、尾部行位;2、水口拼块镶件;3、入子镶件;4、锯齿滑块镶件;5、拼块镶件;6、锯齿镶件a;61、锯齿面a、;62、锯齿拼块镶件;7、锯齿镶件b;71、锯齿面b。
具体实施方式
下面,结合附图以及具体实施方式,对本发明做进一步描述,需要说明的是,在不相冲突的前提下,以下描述的各实施例之间或各技术特征之间可以任意组合形成新的实施例。
实施例1:
参照图2,为本发明公开的一种解决背光进光侧发黄的抛光工艺,包括以下步骤:
步骤S1:首先对模具1加工,根据图纸要求加工模具,其中模具包括尾部行位1、水口拼块镶件2、入子镶件3、锯齿滑块镶件4以及拼块镶件5,参考图3和4,锯齿滑块镶件线割整体无薄片结构,避免锯齿滑块镶件薄片结构容易压模产生毛边毛刺。
步骤S2:注塑成型,把锯齿滑块镶件(参考图4中右侧结构)按模具装配图组好,然后把组装好的模具按操作要求安装在注塑机上(参考图3),最后按照注塑机调机作业程序进行注塑。冷却成型后,进而得到抛光前的导光板。图4中左侧图为现有导光板的锯齿面设置有锯齿镶件时的结构图,其中的锯齿镶件a上设置有锯齿拼块镶件62,并且具有锯齿面a61,图4中右侧结构为本方案采用的锯齿镶件b,其具有锯齿面b。
步骤S3:通过机械手取出方式将导光板放在治具平台上,裁剪水口;把裁剪后的导光板固定在抛光平台上,调整好抛光余量,抛光机抛光主轴转速为4万RPM-10万RPM之间,光刀轮型号为砖石高光两刃铣刀,经过这样抛光出来的导光板进光面平面粗细度才会达到RA为10-50um,进光面表面漫反射比达到峰值,漫反射效果好,粗糙度再增加,漫反射比基本无变化。通过基恩士3D检测仪对进光口进行检测,得到实际光学效果无发黄亮暗不均的导光板。让导光板进光面的表面粗糙没有规律,破坏棱镜的色散,增加光线漫反射,从而使光线进入导光板后混光更充分,让进光侧发出的光线更加均匀,进而有效避免出现偏黄的现象。
上述实施方式仅为本发明的优选实施方式,不能以此来限定本发明保护的范围,本领域的技术人员在本发明的基础上所做的任何非实质性的变化及替换均属于本发明所要求保护的范围。

Claims (6)

1.一种解决背光源进光侧发黄的方法,其特征在于,包括如下步骤:
S1.模具加工,根据图纸要求加工模具;
S2.注塑成型,将模具安装在注塑机上进行注塑,然后冷却成型得到导光板;
S3.导光板进光面二次加工,采用抛光工艺抛光导光板进光面加工形成微锯齿面。
2.如权利要求1所述的一种解决背光源进光侧发黄的方法,其特征在于,所述进光面的表面粗糙度RA为10um-50um。
3.如权利要求1所述的一种解决背光源进光侧发黄的方法,其特征在于,在抛光导光板的进光面时,抛光主轴转速为4万转/分钟-10万转/分钟。
4.如权利要求1所述的一种解决背光源进光侧发黄的方法,其特征在于,所述抛光刀轮型号为砖石高光两刃铣刀。
5.如权利要求1所述的一种解决背光源进光侧发黄的方法,其特征在于,所述模具进光侧锯齿拼块不镶小镶件。
6.如权利要求1所述的一种解决背光源进光侧发黄的方法,其特征在于,所述步骤S3中,抛光进光侧利用控制主轴转速得到需要的导光板进光口粗细度,先通过基恩士3D检测仪对进光口进行检测,得到实际光学效果无发黄亮暗不均的导光板。
CN202211127399.0A 2022-09-16 2022-09-16 一种解决背光源进光侧发黄的方法 Pending CN115431155A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211127399.0A CN115431155A (zh) 2022-09-16 2022-09-16 一种解决背光源进光侧发黄的方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211127399.0A CN115431155A (zh) 2022-09-16 2022-09-16 一种解决背光源进光侧发黄的方法

Publications (1)

Publication Number Publication Date
CN115431155A true CN115431155A (zh) 2022-12-06

Family

ID=84248239

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211127399.0A Pending CN115431155A (zh) 2022-09-16 2022-09-16 一种解决背光源进光侧发黄的方法

Country Status (1)

Country Link
CN (1) CN115431155A (zh)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104400333A (zh) * 2014-10-14 2015-03-11 南京博昱光电科技有限公司 一种导光片入光端面的加工方法及装置
KR20150116948A (ko) * 2014-04-08 2015-10-19 레이젠 주식회사 도광판 절단용 커팅 장치
CN205982706U (zh) * 2016-08-31 2017-02-22 苏州市商祺光电有限公司 一种齿轮状抛光面的导光板
CN111790957A (zh) * 2020-06-17 2020-10-20 深圳市隆利科技股份有限公司 一种解决背光led侧发黄的锯齿工艺
CN111843406A (zh) * 2020-06-17 2020-10-30 深圳市隆利科技股份有限公司 一种辅助解决背光r角暗影的工艺
CN112180640A (zh) * 2020-10-16 2021-01-05 业成科技(成都)有限公司 背光模组及导光膜的制造方法
CN112946811A (zh) * 2021-02-04 2021-06-11 东莞市元立电子科技有限公司 一种导光板及其全自动数控光学抛边工艺

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150116948A (ko) * 2014-04-08 2015-10-19 레이젠 주식회사 도광판 절단용 커팅 장치
CN104400333A (zh) * 2014-10-14 2015-03-11 南京博昱光电科技有限公司 一种导光片入光端面的加工方法及装置
CN205982706U (zh) * 2016-08-31 2017-02-22 苏州市商祺光电有限公司 一种齿轮状抛光面的导光板
CN111790957A (zh) * 2020-06-17 2020-10-20 深圳市隆利科技股份有限公司 一种解决背光led侧发黄的锯齿工艺
CN111843406A (zh) * 2020-06-17 2020-10-30 深圳市隆利科技股份有限公司 一种辅助解决背光r角暗影的工艺
CN112180640A (zh) * 2020-10-16 2021-01-05 业成科技(成都)有限公司 背光模组及导光膜的制造方法
CN112946811A (zh) * 2021-02-04 2021-06-11 东莞市元立电子科技有限公司 一种导光板及其全自动数控光学抛边工艺

Similar Documents

Publication Publication Date Title
US7641374B2 (en) Backlight module and light guide plate thereof
CN102438399B (zh) 一种金属基pcb板无间距拼板及其切割方法
JP2007220347A (ja) 可変プリズム導光板
KR20100092757A (ko) 백라이트 어셈블리 및 도광판의 제조 방법
CN101470230A (zh) 一种利用激光脉冲雕刻的导光板及其制备方法
CN105499675B (zh) 一种车灯用光导齿加工方法及其加工刀具
CN101398507A (zh) 在入光面形成有激光加工图样的导光板及其制作方法
CN104977649A (zh) 导光板及激光打点导光板制作方法
CN115431155A (zh) 一种解决背光源进光侧发黄的方法
CN204076815U (zh) 一种导光板的加工装置
CN109239834B (zh) 一种高亮背光模组用导光板
CN105388558A (zh) 一种同心圆弧曲线排列的微透镜阵列均光板及其制作方法
KR20030044852A (ko) 전방 라이트용 쐐기형 도광판 및 그 도광판의 제조 방법
CN111790957B (zh) 一种解决背光led侧发黄的锯齿工艺
CN101818883A (zh) 用于led模组的导光板及其制造方法
CN208020619U (zh) 一种导光板模仁成型装置
JP2007298911A (ja) 液晶表示用導光板
KR20050103329A (ko) 프리즘 표면에 미세 요철부가 형성된 프리즘 도광판과그의 제조 방법
CN206623131U (zh) 一种用于裁切导光板的平台
CN202204952U (zh) 导光板以及光源装置
JPH07261029A (ja) 導光板およびその加工方法
CN205333903U (zh) 一种同心圆弧曲线排列的微透镜阵列均光板
KR101711974B1 (ko) 도광판의 압출 제조 방법
CN110609353B (zh) 一种转角透镜光纤阵列及其制作方法
CN203994441U (zh) 一种一次注塑成型导光板

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