TWI529081B - 防眩後視鏡 - Google Patents
防眩後視鏡 Download PDFInfo
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- TWI529081B TWI529081B TW104100293A TW104100293A TWI529081B TW I529081 B TWI529081 B TW I529081B TW 104100293 A TW104100293 A TW 104100293A TW 104100293 A TW104100293 A TW 104100293A TW I529081 B TWI529081 B TW I529081B
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- 239000004983 Polymer Dispersed Liquid Crystal Substances 0.000 claims description 32
- 125000006850 spacer group Chemical group 0.000 claims description 15
- 239000000758 substrate Substances 0.000 claims description 12
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 239000011787 zinc oxide Substances 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical group [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 claims description 2
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 10
- 230000004313 glare Effects 0.000 description 7
- 239000004973 liquid crystal related substance Substances 0.000 description 6
- 230000005684 electric field Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 229920006335 epoxy glue Polymers 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
- B60R1/02—Rear-view mirror arrangements
- B60R1/08—Rear-view mirror arrangements involving special optical features, e.g. avoiding blind spots, e.g. convex mirrors; Side-by-side associations of rear-view and other mirrors
- B60R1/083—Anti-glare mirrors, e.g. "day-night" mirrors
- B60R1/088—Anti-glare mirrors, e.g. "day-night" mirrors using a cell of electrically changeable optical characteristic, e.g. liquid-crystal or electrochromic mirrors
-
- 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
- G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
-
- 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
- G02F1/1339—Gaskets; Spacers; Sealing of cells
-
- 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
- G02F1/1345—Conductors connecting electrodes to cell terminals
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Engineering & Computer Science (AREA)
- Dispersion Chemistry (AREA)
- Multimedia (AREA)
- Mechanical Engineering (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
- Optical Elements Other Than Lenses (AREA)
Description
本發明係與後視鏡有關,特別是有關於一種防眩後視鏡。
按,現今汽車已為最重要之交通、代步工具,而為避免後方車輛或外部環境因強光射入而使車用後視鏡產生反射光而使駕駛者產生眩光現象而影響行車安全,越來越多車輛上會安裝具防眩功能之後視鏡。
隨著車輛數量不斷增加,造成行車環境日益惡化,尤其在太陽強光照射下,後視鏡會反射極強之光線,使駕駛者產生眩光現象而不易看清路況,或者在夜間或光線微弱之環境下,後方車輛之強光照射於後視鏡上將造成汽車駕駛者產生刺眼感受而無法看清路況,容易造成交通意外。為改善此一缺失,眾家廠商便發展出各式具有防眩功能之後視鏡模組。
如TWM309528、TW533153、TW I265972所揭示者,即為具有防眩功能之後視鏡。然而,習知後視鏡例如係使用電致變色材料或電解液層來達成光線之控制效果,除了材料價格較貴之外,整體價格較為昂貴,且在反應速度上亦較慢(大約6至7秒或更久),因此作為防眩後視鏡之用時非臻理想,存在著亟待改善之缺弊。
因此,有必要提供一種新穎且具有進步性之防眩後視鏡,以解決上述之問題。
本發明之主要目的在於提供一種防眩後視鏡,可有效地依據光線之強弱而調整反射效果,能有效地降低反射眩光;可大幅降低整體厚度及驅動電壓,更易驅動且節能省電;且可以方波交流電進行驅動,可提昇反射清晰效果並降地眩光,大幅增加行車安全性。
為達成上述目的,本發明提供一種防眩後視鏡,包括:一導電反射層,可導電且具有一反射面;一聚合物分散液晶(polymer dispersed liquid crystal,PDLC)層,位於該反射面之一側而設於該導電反射層上,包含有多數間隔物,該間隔物之徑向尺寸為2至18微米(μm)之間;一第一透光導電(transparent conductive oxide,TCO)層,設於該PDLC層上;一透光基板,設於該第一透光導電層上;一封邊,將該PDLC層環封於該導電反射層與該第一透光導電層之間;其中,該等間隔物至少部分抵接於該導電反射層及該第一透光導電層。
1‧‧‧防眩後視鏡
10‧‧‧導電反射層
11‧‧‧反射面
12‧‧‧金屬片
13‧‧‧第二透光導電層
20‧‧‧PDLC層
21‧‧‧間隔物
22‧‧‧液晶
30‧‧‧第一透光導電層
40‧‧‧透光基板
50‧‧‧封邊
60‧‧‧交流電源電路
61‧‧‧方波交流電
62‧‧‧升壓電路
63‧‧‧直流轉交流電路
圖1為本發明一較佳實施例之立體圖。
圖2為本發明一較佳實施之剖面圖。
圖3及4為本發明一較佳實施例之作動示意圖。
圖5為本發明一較佳實施例之交流電源電路示意圖。
圖6為本發明一較佳實施例之交流電源波形圖。
以下僅以實施例說明本發明可能之實施態樣,然並非用以限
制本發明所欲保護之範疇,合先敘明。
請參考圖1至4,其顯示本發明之一較佳實施例,本發明之防眩後視鏡1包括一導電反射層10、一PDLC層20、一第一透光導電層30、一透光基板40及一封邊50。
該導電反射層10可導電且具有一供反射光線之反射面11,在本實施例中,該導電反射層10包括一金屬片12及一第二透光導電層13,該金屬片12之一側設有該反射面11,該第二透光導電層13設於該反射面11上,該金屬片12例如為鋁片或類似物,當然該導電反射層10可為一體成形之單一導電層且於一表面形成(例如拋光)該反射面11。當然,亦可於該導電反射層10相反於該反射面11之一側另設有一背板14,例如,將該導電反射層10設於一例如玻璃之基板上,獲得較佳之支持及承載。
該PDLC層20位於該反射面11之一側而設於該導電反射層10上,該PDLC層20包含有多數間隔物21,該間隔物21可例如為陶瓷或塑膠(如PS)顆粒,該間隔物21之徑向尺寸為2至18微米(μm)之間,較佳為5至10微米之間,在該PDLC層20中,該間隔物21之含量為0.4%至0.8%,較佳為0.5%,然上述之徑向尺寸或/及含量可依據不同條件而有所不同。其中,該PDLC層20之厚度與其所需驅動電壓成正相關,厚度越厚驅動電壓越高。舉例而言,該PDLC層20之厚度為20微米時,驅動電壓需約為65伏特;該PDLC層20之厚度為5至8微米時,驅動電壓僅需約18伏特。要說明的是,若該間隔物21之含量太低,則該PDLC層20中之物質的分佈厚薄不均;若該間隔物21之含量太高,則可能影響透光率。
該第一透光導電層30設於該PDLC層20上,其中該第一
透光導電層30或/及該第二透光導電層13可為銦錫氧化物(indium tin oxide,ITO)、銦鋅氧化物(indium zinc oxide,IZO)或摻雜鋁的氧化鋅薄膜(Al-doped ZnO,AZO)。較佳地,該第一透光導電層30及該導電反射層10相對於該PDLC層20錯開設置且部分顯露,如此方便與外部電源電性連接(如貼接、焊接、黏接等),亦不會損及厚度極薄之該第一透光導電層30和該第二透光導電層13。
該透光基板40設於該第一透光導電層30上,該透光基板40係為玻璃或PET基板、或其類似物,其中該PET基板除具有封裝及保護效果外,另具有成本低、製造容易、極輕薄之特性。
該封邊50將該PDLC層20環封於該導電反射層10與該第一透光導電層30之間,由於該PDLC層20中包括具有些許流動性之液晶22,該封邊50之設置可避免因重力作用而該PDLC層20上部之液晶22與其中成份向下逐漸流失而造成防眩後視鏡1之上部失去功能。該封邊50可為任何膠材,例如UV膠、環氧樹脂膠等。其中,該等間隔物21至少部分抵接於該導電反射層10及該第一透光導電層30,藉此可精確且平整地控制該導電反射層10與該第一透光導電層30之間的距離,同時控制該PDLC層20之厚度介於2至18微米之間。如此,相較於習知結構,本發明可大幅降低厚度及驅動電壓,更易驅動且節能省電。
請進一步配合參考圖5及6,在本實施例中,該防眩後視鏡1另包括一交流電源電路60,該交流電源電路60與該導電反射層10之第二透光導電層13及該第一透光導電層30電性連接,該交流電源電路60供產生一方波交流電61供應至該導電反射層10及該第一透光導電層30。詳
細地說,該交流電源電路60包括一升壓電路62及一直流轉交流電路63,該升壓電路62可將一例如12伏特(V)之直流電升壓至60伏特,再經由該直流轉交流電路63轉換為交流電。
在實際作動中,當該交流電源電路60之電源未導通至該導電反射層10及該第一透光導電層30時,該PDLC層20中之液晶22不受電場作用而未旋轉朝向同一方向(如圖3所示),入射/反射光線會被散射,因此強光經由本發明之防眩後視鏡1反射後,其強度降低,可降低反射眩光;當該交流電源電路60之電源導通至該導電反射層10及該第一透光導電層30時,該PDLC層20中之液晶22受電場作用而旋轉朝向同一方向(如圖4所示),可允許所有入射/反射光線通行,因此較弱之光線獲得較高的反射效果,可維持較佳之反射效果。值得一提的是,該交流電源電路60係產生該方波交流電61,相較於使用弦波交流電而言,由於電壓是例如於+60伏特與-60伏特之間快速跳動地切換,該PDLC層20中之液晶22受到電場作用而旋轉朝向同一方向後可持續保持朝向同一方向而不會轉回,不會如弦波交流電由正負電壓之間緩慢連續變化而無法持續保持液晶22朝向同一方向,故可完全保持防眩後視鏡之通透性、反射效果、清晰且不產生延遲或疊影問題,大幅增加行車安全性。上述反射效果之改變例如可透過一自動光感測及控制電路配合來達成。
綜上,本發明防眩後視鏡透過該PDLC層之作用可有效地依據光線之強弱而調整反射效果,能有效地降低反射眩光。
並且,該PDLC層中之多數間隔物可精確且平整地控制該PDLC層之厚度介於2至18微米之間,可大幅降低厚度及驅動電壓,更易
驅動且節能省電。
此外,本發明防眩後視鏡較佳可以方波交流電進行驅動,可完全保持防眩後視鏡之通透性、反射效果、清晰且不產生延遲或疊影問題,大幅增加行車安全性。
綜上所述,本發明之整體結構設計、實用性及效益上,確實是完全符合產業上發展所需,且所揭露之結構發明亦是具有前所未有的創新構造,所以其具有「新穎性」應無疑慮,又本發明可較之習知結構更具功效之增進,因此亦具有「進步性」,其完全符合我國專利法有關發明專利之申請要件的規定,乃依法提起專利申請,並敬請 鈞局早日審查,並給予肯定。
10‧‧‧導電反射層
11‧‧‧反射面
12‧‧‧金屬片
13‧‧‧第二透光導電層
20‧‧‧PDLC層
21‧‧‧間隔物
22‧‧‧液晶
30‧‧‧第一透光導電層
40‧‧‧透光基板
50‧‧‧封邊
Claims (10)
- 一種防眩後視鏡,包括:一導電反射層,可導電且具有一反射面;一聚合物分散液晶(polymer dispersed liquid crystal,PDLC)層,位於該反射面之一側而設於該導電反射層上,包含有多數間隔物,該間隔物之徑向尺寸為2至18微米(μm)之間;一第一透光導電(transparent conductive oxide,TCO)層,設於該PDLC層上;一透光基板,設於該第一透光導電層上;一封邊,將該PDLC層環封於該導電反射層與該第一透光導電層之間;其中,該等間隔物至少部分抵接於該導電反射層及該第一透光導電層。
- 如請求項1所述的防眩後視鏡,其中該導電反射層及該第一透光導電層相對於該PDLC層錯開設置且部分顯露。
- 如請求項1所述的防眩後視鏡,其中該導電反射層包括一金屬片及一第二透光導電層,該金屬片之一側設有該反射面,該第二透光導電層設於該反射面上。
- 如請求項3所述的防眩後視鏡,其中該金屬片係為鋁片。
- 如請求項1所述的防眩後視鏡,其中該第一透光導電層係為銦錫氧化物(indium tin oxide,ITO)、銦鋅氧化物(indium zinc oxide,IZO)或摻雜鋁的氧化鋅薄膜(Al-doped ZnO,AZO)。
- 如請求項1所述的防眩後視鏡,其中該間隔物之徑向尺寸為5至10微米之間。
- 如請求項1所述的防眩後視鏡,其中在該PDLC層中,該間隔物之含量為0.4%至0.8%。
- 如請求項1所述的防眩後視鏡,其中於該導電反射層相反於該反射面之一側另設有一背板。
- 如請求項1所述的防眩後視鏡,其中該透光基板係為玻璃或PET基板。
- 如請求項1所述的防眩後視鏡,另包括一交流電源電路,該交流電源電路與該導電反射層及該第一透光導電層電性連接,該交流電源電路供產生一方波交流電供應至該導電反射層及該第一透光導電層。
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW104100293A TWI529081B (zh) | 2015-01-06 | 2015-01-06 | 防眩後視鏡 |
| US14/958,228 US20160193962A1 (en) | 2015-01-06 | 2015-12-03 | Anti-glare rearview mirror |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW104100293A TWI529081B (zh) | 2015-01-06 | 2015-01-06 | 防眩後視鏡 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201515877A TW201515877A (zh) | 2015-05-01 |
| TWI529081B true TWI529081B (zh) | 2016-04-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW104100293A TWI529081B (zh) | 2015-01-06 | 2015-01-06 | 防眩後視鏡 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US20160193962A1 (zh) |
| TW (1) | TWI529081B (zh) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6801292B2 (en) * | 2000-04-07 | 2004-10-05 | Canon Kabushiki Kaisha | Liquid crystal composition, device and apparatus |
| US20060221452A1 (en) * | 2005-03-31 | 2006-10-05 | Zhan Chen | Anti-glare reflective and transmissive devices |
| KR101720587B1 (ko) * | 2010-08-11 | 2017-03-29 | 삼성전자주식회사 | 반사형 디스플레이 장치 |
| KR101347940B1 (ko) * | 2012-08-29 | 2014-01-08 | 동국대학교 산학협력단 | 냉각판을 이용한 고분자 분산 액정 소자의 제조방법 |
| KR101598673B1 (ko) * | 2012-12-14 | 2016-03-02 | 주식회사 엘지화학 | 중합성 조성물 |
| CN103309074B (zh) * | 2013-05-24 | 2016-02-24 | 京东方科技集团股份有限公司 | 一种pdlc液晶面板的制备方法 |
-
2015
- 2015-01-06 TW TW104100293A patent/TWI529081B/zh not_active IP Right Cessation
- 2015-12-03 US US14/958,228 patent/US20160193962A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| US20160193962A1 (en) | 2016-07-07 |
| TW201515877A (zh) | 2015-05-01 |
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