JP2007206559A - Method for removing film for liquid crystal display panel - Google Patents

Method for removing film for liquid crystal display panel Download PDF

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JP2007206559A
JP2007206559A JP2006027561A JP2006027561A JP2007206559A JP 2007206559 A JP2007206559 A JP 2007206559A JP 2006027561 A JP2006027561 A JP 2006027561A JP 2006027561 A JP2006027561 A JP 2006027561A JP 2007206559 A JP2007206559 A JP 2007206559A
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liquid crystal
crystal display
display panel
polarizing film
film
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喜久雄 ▲高▼梨
Kikuo Takanashi
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Yamaichi Electronics Co Ltd
山一電機株式会社
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Abstract

<P>PROBLEM TO BE SOLVED: To easily peel off a polarizing film from a substrate surface even when the substrate is fragile. <P>SOLUTION: The polarizing film 12 and an adhesive 14 of a liquid crystal display panel 10 are heated in an electromagnetic wave generator 22 in 70-100°C temperature range, and subsequently the polarizing film 12 and the adhesive 14 are removed with a film removing apparatus 32. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、液晶表示パネル用フィルムの除去方法に関する。 The present invention relates to a method for removing the liquid crystal display panel film.

表示部を備える電子機器においては、その表示部が液晶表示(LCD)パネルで構成されるものが広く実用に供されている。 In the electronic apparatus including a display unit, the display unit is subjected to wide practical use those constituted with a liquid crystal display (LCD) panel. そのような液晶表示パネルは、例えば、特許文献1および特許文献2にも示されるように、ガラス製またはプラスチック製の相対向する基板間に形成される液晶層と、その基板のうちの一方にまたは双方に接着される偏光フィルムとを主な要素として含んで構成されている。 Such liquid crystal display panel, for example, as shown in Patent Document 1 and Patent Document 2, a liquid crystal layer formed between the substrates facing each made of glass or plastic, on one of its substrate or a polarizing film is adhered to both is configured to include as main components.

そのような液晶表示パネルの製造工程において、偏光フィルムを基板の表面に接着する作業工程のとき、不所望な気泡や異物が基板の表面に塗布された接着剤と偏光フィルムとの間に形成される場合がある。 In the manufacturing process of such a liquid crystal display panel, when the working step of bonding a polarizing film on the surface of the substrate, undesired air bubbles and foreign substances is formed between the adhesive and the polarizing film that is applied to the surface of the substrate there is a case that. このような気泡を形成しないようにする方法としては、例えば、特許文献3にも示されるように、偏光フィルムが基板の表面に接着されるとき、ローラで偏光フィルムが基板に対し押圧されつつ接着され、その後、比較的長期間、熱が偏光フィルムに加えられる方法とされる。 As a method to avoid forming such bubbles, for example, as shown in Patent Document 3, when a polarizing film is bonded to the surface of the substrate, while the polarizing film is pressed to the substrate with a roller adhesion is, then, a relatively long period of time, heat is a method applied to the polarizing film.

特開2000−248243号公報 JP 2000-248243 JP 特開2001−27753号公報 JP 2001-27753 JP 特開2001−27879号公報 JP 2001-27879 JP

上述の方法のように、比較的長期間にわたり熱を偏光フィルムに加えることは、生産効率の観点からは得策とは言えず、また、上述のような対策が仮になされても、量産される液晶表示パネルうち、気泡や異物が基板の表面に塗布された接着剤と偏光フィルムとの間に形成される液晶表示パネルが一個も生じないとも言えない。 As the method described above, the liquid crystal applying heat to the polarizing film for a relatively long period of time, it can not be said advantageous in terms of production efficiency, also as described above measures also if made, to be mass-produced among the display panel, not say a liquid crystal display panel that bubbles and foreign substances is formed between the adhesive and the polarizing film that is applied to the surface of the substrate does not occur even one.

このような場合、偏光フィルムを基板から一旦、剥がし、再度、新たな偏光フィルムを基板に貼付することも考えられる。 In such cases, once the polarizing film from the substrate, peeled off, again, it is conceivable to affix to the substrate a new polarizing film.

しかしながら、ガラス製の基板の場合、基板が破損し易いので偏光フィルムを基板の表面から引き剥がすことは容易でない。 However, if the glass substrate, it is not easy to peel the polarizing film from the surface of the substrate so easily substrate is damaged.

以上の問題点を考慮し、本発明は、液晶表示パネル用フィルムの除去方法であって、破損し易い基板であっても偏光フィルムを基板の表面から容易に引き剥がすことができる液晶表示パネル用フィルムの除去方法を提供することを目的とする。 In view of the above problems, the present invention provides a method of removing a liquid crystal display panel for the film, fragile polarizing film be a substrate can be a easily peeled off from the surface of the substrate for a liquid crystal display panel and to provide a method for removing the film.

上述の目的を達成するために、本発明に係る液晶表示パネル用フィルムの除去方法は、偏光フィルムと、偏光フィルムに接着層を介して重ねられる基板とを有する液晶表示パネルの偏光フィルムおよび接着層に対し偏光フィルムおよび接着層を軟化させるようにマイクロ波帯域の電磁波を照射し加熱する工程と、加熱された偏光フィルムおよび接着層を液晶表示パネルの基板から除去する工程と、を含んでなる。 To achieve the above object, a method for removing the liquid crystal display panel for a film according to the present invention, a polarizing film, the polarizing film and the adhesive layer of the liquid crystal display panel having a substrate which is superimposed via the adhesive layer to the polarizing film comprising a step of heating by irradiating an electromagnetic wave of a microwave band to soften the polarizing film and the adhesive layer, and removing the substrate of the liquid crystal display panel heated polarizing film and the adhesive layer, the relative.

以上の説明から明らかなように、本発明に係る液晶表示パネル用フィルムの除去方法によれば、液晶表示パネルの偏光フィルムおよび接着層に対し偏光フィルムおよび接着層を軟化させるようにマイクロ波帯域の電磁波を照射し加熱するので偏光フィルムおよび接着層が軟化せしめられることにより破損し易い基板であっても偏光フィルムを基板の表面から容易に引き剥がすことができる。 As apparent from the above description, according to the method of removing the liquid crystal display panel for a film according to the present invention, the microwave band, as to the polarizing film and the adhesive layer of the liquid crystal display panel to soften the polarizing film and the adhesive layer polarizing film be easily substrate broken by the polarizing film and the adhesive layer is brought into softened since irradiated with electromagnetic waves to heat can be a easily peeled off from the surface of the substrate.

図2は、本発明に係る液晶表示パネル用フィルムの除去方法の一例が適用される液晶表示パネルの断面構造の一部を概略的に示す。 Figure 2 shows schematically a part of a cross-sectional structure of the liquid crystal display panel to which an example of a method for removing the liquid crystal display panel film according to the present invention is applied.

図2において、液晶表示パネル10は、所定の間隔をもって相対向して配される比較的薄いガラス基板16および20と、ガラス基板16とガラス基板20との間に配される液晶層18と、ガラス基板16の一方の表面に接着剤14を介して接着される偏光フィルム12とを主な要素として含んで構成されている。 2, the liquid crystal display panel 10 includes a relatively thin glass substrate 16 and 20 which are disposed to face with a predetermined interval, and the liquid crystal layer 18 arranged between the glass substrate 16 and the glass substrate 20, the polarizing film 12 is adhered to one surface of the glass substrate 16 through the adhesive 14 is configured to include as main components.

液晶層18は、例えば、ガラス基板20の一方の表面に形成されるカラーフィルターと、そのカラーフィルター上に形成される一対の透明電極と、その一対の透明電極の間に設けられる配向膜、および液晶とを含んで構成されている。 The liquid crystal layer 18 is, for example, a color filter is formed on one surface of the glass substrate 20, and a pair of transparent electrodes formed on its color filter, an orientation film provided between the pair of transparent electrodes, and It is configured to include a liquid crystal.

不図示のバックライトが照射される偏光フィルム12は、例えば、ポリビニルアルコール系の材料で薄膜状に形成されている。 Polarizing film 12 backlight (not shown) is irradiated, for example, are formed as thin films of a material of the polyvinyl alcohol. 接着剤14は、アクリル系接着剤、例えば、水酸基を有するセルローストリアセテートを含む接着剤とされる。 The adhesive 14 is an acrylic adhesive, for example, be an adhesive comprising a cellulose triacetate having a hydroxyl group.

なお、液晶表示パネル10は、上述の例に限られることなく、図2にニ点鎖線で示されるように、偏光フィルム12が、ガラス基板20の他方の表面に接着剤14と同様な接着剤で既に気泡が生じることなく良好に接着されたものであってもよい。 The liquid crystal display panel 10 is not limited to the above example, as shown by chain double-dashed line in FIG. 2, the polarizing film 12, the same adhesive and the adhesive 14 on the other surface of the glass substrate 20 in may be those already good adhesion without air bubbles appeared.

本発明に係る液晶表示パネル用フィルムの除去方法の一例において、例えば、生産の途中でその内部に気泡や異物が見受けられた不所望な偏光フィルム12を液晶表示パネル10のガラス基板16から除去するにあたり、先ず、対象となる複数の液晶表示パネル10が電磁波発生装置22内に配置される。 In one example of a method of removing the liquid crystal display panel for a film according to the present invention, for example, to remove undesired polarization film 12 seen bubbles and foreign matters therein during the production of a glass substrate 16 of the liquid crystal display panel 10 per the, first, a plurality of liquid crystal display panel 10 of interest is located in the electromagnetic wave generator 22.

電磁波発生装置22は、例えば、電子レンジのような高周波数帯域の電磁波を発生するものとされる。 Electromagnetic wave generator 22 is, for example, is intended to generate an electromagnetic wave of high frequency band such as a microwave oven. 電磁波発生装置22は、図1に示されるように、外郭部28の内側に液晶表示パネル10を収容し加熱するパネル収容室28aを有している。 Electromagnetic wave generator 22, as shown in FIG. 1, a panel storage chamber 28a for heating houses the liquid crystal display panel 10 to the inside of the outer shell 28. パネル収容室28aは、電磁波発生部26からの電磁波(マイクロ波)を反射し、反射されたマイクロ波を液晶表示パネル10に向けて照射する金属製の反射壁を内周部全体に有している。 Panel accommodating chamber 28a reflects electromagnetic waves (microwaves) from the electromagnetic wave generating section 26, the reflected microwave has the entire inner periphery of the metallic reflecting wall to be irradiated toward the liquid crystal display panel 10 there. また、パネル収容室28aは、各液晶表示パネル10が載置されるパネル棚24ai(i=1〜n,nは正の整数)を備えている。 Further, the panel storage chamber 28a, the panel shelves 24ai of the liquid crystal display panel 10 is placed (i = 1 to n, n is a positive integer) and a. パネル棚24aiは、それぞれ、所定の間隔をもって互いに平行に配置されている。 Panel shelf 24ai, respectively, are arranged parallel to each other with a predetermined interval. 液晶表示パネル10の側方には、マグトロンを含んでなる電磁波発生部26が設けられている。 On the side of the liquid crystal display panel 10, the electromagnetic wave generator 26 comprising a Magutoron is provided. そのマグトロンは、水分子を振動させる程度、例えば、2.45×10 (Hz)帯域のマイクロ波を発生するものとされる。 Its Magutoron the degree to vibrate water molecules, for example, is intended to generate a microwave of 2.45 × 10 9 (Hz) bandwidth.

次に、電磁波発生部26が作動状態とされ、電磁波が所定期間、複数の液晶表示パネル10の偏光フィルム12に対して照射される。 Then, the electromagnetic wave generating section 26 is the operative state, an electromagnetic wave is irradiated for a predetermined time period, the polarizing film 12 of a plurality of liquid crystal display panel 10. これにより、液晶表示パネル10の偏光フィルム12および接着剤14は、それぞれ、上述したように、水酸基を含むのでその表面温度が70℃〜100℃の範囲で加熱され軟化せしめられることとなる。 Accordingly, the polarizing film 12 and adhesive 14 of the liquid crystal display panel 10, respectively, as described above, its surface temperature and thus induced to be heated in the range of 70 ° C. to 100 ° C. softening because they contain hydroxyl groups.

続いて、パネル収容室28aから加熱された各液晶表示パネル10は、取り出され、図3に示されるように、支持台30の支持面30Sに載置される。 Subsequently, each of the liquid crystal display panel 10, which is heated from the panel accommodating chamber 28a is removed, as shown in FIG. 3, it is placed on the support surface 30S of the support 30. 支持台30の支持面30Sには、内部に形成される吸引用通路30a,30b,30cおよび30dの一方の開口端が開口されている。 The support surface 30S of the support base 30, the suction passage 30a formed inside, 30b, the one open end of 30c and 30d are opened. 吸引用通路30a,30b,30cおよび30dの他方の開口端は、例えば、図示が省略される真空ポンプ等に接続される吸引部に接続されている。 The other open end of the suction passage 30a, 30b, 30c and 30d, for example, is connected to a suction unit connected to a vacuum pump or the like shown is omitted. これにより、真空ポンプが作動状態とされる場合、液晶表示パネル10がその吸引力により支持台30の支持面30Sにおける所定位置に保持されることとなる。 Accordingly, if the vacuum pump is in operation, so that the liquid crystal display panel 10 is held in position on the support surface 30S of the support table 30 by the suction force. その際、液晶表示パネル10は、そのガラス基板20が支持面30Sに当接するように載置される。 At that time, the liquid crystal display panel 10, the glass substrate 20 is placed so as to abut against the support surface 30S.

続いて、図3に示されるように、鋭利な刃部32Eを有するフィルム除去装置32が支持台30の一方側に配置される。 Subsequently, as shown in FIG. 3, the film removing device 32 having a sharp edge portion 32E is disposed on one side of the support base 30. フィルム除去装置32の刃部32Eは、支持面30Sに対し相対的に所定の移動速度で往復移動可能に支持されている。 Blade section 32E of the film removing apparatus 32 is reciprocably supported in a relatively predetermined moving speed relative to the support surface 30S.

その際、初期位置において、フィルム除去装置32の刃部32Eの先端が図3に二点鎖線で示されるように、接着剤14とガラス基板16との境界部分における一方の端部に一致するように配置される。 At that time, in the initial position, so that the tip of the blade section 32E of the film removing apparatus 32 is shown by a two-dot chain line in FIG. 3, to match the one end portion at the boundary portion between the adhesive 14 and the glass substrate 16 It is placed in.

そして、刃部32Eが図3において矢印の示す方向に沿って偏光フィルム12および接着剤14の一方の端部側から他方の端部まで移動せしめられる。 Then, it is moved blade section 32E along the direction indicated by an arrow in FIG. 3 from one end side of the polarizing film 12 and adhesive 14 to the other end. これにより、刃部32Eの矢印の示す方向の移動に伴い、液晶表示パネル10における偏光フィルム12'および接着剤14'が図3に二点鎖線で示されるように、徐々にガラス基板16の表面から容易に削り取られることとなる。 Thus, with the movement in the direction indicated by the arrow of the blade portion 32E, so that the polarization film 12 'and adhesive 14' in the liquid crystal display panel 10 is indicated by two-dot chain line in FIG. 3, gradually the surface of the glass substrate 16 the be chipped off easily from.

上述の例においては、加熱された偏光フィルム12'および接着剤14'は、フィルム除去装置32が利用されてガラス基板16の表面から除去されているが、斯かる例に限られることなく、例えば、図4に示されるように、一方の表面に粘着層34aを有する接着シート34が利用されてもよい。 In the above example, the polarizing film 12 'and adhesive 14' is heated, but the film removing apparatus 32 is utilized is removed from the surface of the glass substrate 16, without being limited to such an example, for example, , as shown in FIG. 4, the adhesive sheet 34 having an adhesive layer 34a on one surface may be utilized. なお、図4においては、図3において同一とされる構成要素について同一の符号を付してその重複説明を省略する。 In FIG. 4, explanation thereof will be eliminated by the same reference numerals for components that are the same in FIG.

図4においては、先ず、上述の例と同様に加熱された各液晶表示パネル10は、パネル収容室28aから取り出され、支持台30の支持面30Sに載置される。 In FIG. 4, first, the liquid crystal display panel 10 heated similarly to the example described above is taken out from the panel accommodating chamber 28a, it is placed on the support surface 30S of the support 30. その際、液晶表示パネル10は、そのガラス基板20が支持面30Sに当接するように載置される。 At that time, the liquid crystal display panel 10, the glass substrate 20 is placed so as to abut against the support surface 30S.

次に、接着シート34は、その粘着層34aが偏光フィルム12の表面に当接され、所定の圧力で押圧された後、図4において二点鎖線で示されるように引き上げられる。 Next, the adhesive sheet 34, the adhesive layer 34a is in contact with the surface of the polarizing film 12, after being pressed with a predetermined pressure is raised as shown by two-dot chain line in FIG. 4.
これにより、粘着層34aの粘着力によって偏光フィルム12'および接着剤14'がガラス基板16の表面から容易に引き剥がされることとなる。 Accordingly, the polarizing film 12 'and adhesive 14' is be easily peeled from the surface of the glass substrate 16 by the adhesive force of the adhesive layer 34a.

従って、破損し易いガラス基板16であっても偏光フィルム12および接着剤14が、ガラス基板16を破損させることなく、その表面から容易に引き剥がされることとなる。 Therefore, breakage polarizing film 12 and adhesive 14 be easily glass substrate 16, without damaging the glass substrate 16, and be easily peeled from the surface.

本発明に係る液晶表示パネル用フィルムの除去方法の一例に用いられる電磁波発生装置の構成を概略的に示す構成図である。 The configuration of the electromagnetic wave generator for use in an example of the method for removing the liquid crystal display panel film according to the present invention is a configuration diagram schematically showing. 本発明に係る液晶表示パネル用フィルムの除去方法の一例が適用される液晶表示パネルの断面構造を模式的に示す断面図である。 The cross-sectional structure of the liquid crystal display panel to which an example of a method of removing applies the liquid crystal display panel for a film according to the present invention is a cross-sectional view schematically showing. 本発明に係る液晶表示パネル用フィルムの除去方法の一例においてフィルム除去装置を用いたフィルムの除去工程の説明に供される図である。 Is a is a diagram illustrating the step of removing the film using a film removing device in one example of a method of removing the liquid crystal display panel for a film according to the present invention. 本発明に係る液晶表示パネル用フィルムの除去方法の一例において接着シートを用いたフィルムの除去工程の説明に供される図である。 Is a is a diagram illustrating the step of removing the film using the adhesive sheet in one example of a method of removing the liquid crystal display panel for a film according to the present invention.

符号の説明 DESCRIPTION OF SYMBOLS

10 液晶表示パネル12 偏光フィルム14 接着剤16 ガラス基板22 電磁波発生装置32 フィルム除去装置34 接着シート 10 liquid crystal display panel 12 polarizing film 14 adhesive 16 glass substrate 22 electromagnetic wave generator 32 the film removing apparatus 34 adhesive sheet

Claims (4)

  1. 偏光フィルムと、該偏光フィルムに接着層を介して重ねられる基板とを有する液晶表示パネルの該偏光フィルムおよび接着層に対し該偏光フィルムおよび接着層を軟化させるようにマイクロ波帯域の電磁波を照射し加熱する工程と、 A polarizing film was irradiated with an electromagnetic wave of a microwave band to soften the polarizing film and the adhesive layer to the polarizing film and the adhesive layer of the liquid crystal display panel having a substrate which is superimposed via the adhesive layer to the polarizing film and heating,
    前記加熱された偏光フィルムおよび接着層を前記液晶表示パネルの基板から除去する工程と、 Removing the polarizing film and the adhesive layer wherein heated from the substrate of the liquid crystal display panel,
    を含んでなる液晶表示パネル用フィルムの除去方法。 Method for removing the liquid crystal display panel for a film comprising a.
  2. 前記偏光フィルムおよび接着層は、水酸基を含む物質で作られることを特徴とする請求項1記載の液晶表示パネル用フィルムの除去方法。 Wherein the polarizing film and the adhesive layer, the method of removing the liquid crystal display panel for a film according to claim 1, wherein the made of material containing hydroxyl groups.
  3. 前記加熱された偏光フィルムおよび接着層は、フィルム除去装置により前記基板から削り取られることを特徴とする請求項1記載の液晶表示パネル用フィルムの除去方法。 Said heated polarizing film and the adhesive layer, a liquid crystal display method for removing the panel film according to claim 1, wherein the scraped away by the film removing apparatus from the substrate.
  4. 前記加熱された偏光フィルムおよび接着層は、接着シートにより前記基板から引き剥がされることを特徴とする請求項1記載の液晶表示パネル用フィルムの除去方法。 Said heated polarizing film and the adhesive layer, the method of removing the liquid crystal display panel for a film according to claim 1, wherein the peeled off from the substrate by an adhesive sheet.
JP2006027561A 2006-02-03 2006-02-03 Method for removing film for liquid crystal display panel Pending JP2007206559A (en)

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JP2011511955A (en) * 2007-12-28 2011-04-14 イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニーE.I.Du Pont De Nemours And Company Method of repairing an adhesive pasted the liquid crystal display
US8118075B2 (en) 2008-01-18 2012-02-21 Rockwell Collins, Inc. System and method for disassembling laminated substrates
US8137498B2 (en) 2005-08-30 2012-03-20 Rockwell Collins Inc. System and method for completing lamination of rigid-to-rigid substrates by the controlled application of pressure
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US8647727B1 (en) 2012-06-29 2014-02-11 Rockwell Colllins, Inc. Optical assembly with adhesive layers configured for diffusion
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US8936057B2 (en) 2005-08-30 2015-01-20 Rockwell Collins, Inc. Substrate lamination system and method
US8540002B2 (en) 2005-08-30 2013-09-24 Rockwell Collins, Inc. System and method for completing lamination of rigid-to-rigid substrates by the controlled application of pressure
US8137498B2 (en) 2005-08-30 2012-03-20 Rockwell Collins Inc. System and method for completing lamination of rigid-to-rigid substrates by the controlled application of pressure
US8691043B2 (en) 2005-08-30 2014-04-08 Rockwell Collins, Inc. Substrate lamination system and method
US9733349B1 (en) 2007-09-06 2017-08-15 Rockwell Collins, Inc. System for and method of radar data processing for low visibility landing applications
US9939526B2 (en) 2007-09-06 2018-04-10 Rockwell Collins, Inc. Display system and method using weather radar sensing
JP2011511955A (en) * 2007-12-28 2011-04-14 イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニーE.I.Du Pont De Nemours And Company Method of repairing an adhesive pasted the liquid crystal display
US7814676B2 (en) 2008-01-18 2010-10-19 Rockwell Collins, Inc. Alignment system and method thereof
US8118075B2 (en) 2008-01-18 2012-02-21 Rockwell Collins, Inc. System and method for disassembling laminated substrates
US8603288B2 (en) 2008-01-18 2013-12-10 Rockwell Collins, Inc. Planarization treatment of pressure sensitive adhesive for rigid-to-rigid substrate lamination
US9573327B2 (en) 2008-01-18 2017-02-21 Rockwell Collins, Inc. Planarization treatment of pressure sensitive adhesive for rigid-to-rigid substrate lamination
US9638944B1 (en) 2008-01-18 2017-05-02 Rockwell Collins, Inc. Systems and methods for substrate lamination
US8411235B1 (en) 2010-03-16 2013-04-02 Rockwell Collins, Inc. Displays for three-dimensional imaging
US8419496B1 (en) 2010-03-18 2013-04-16 Rockwell Collins, Inc. Display panel alignment system
US8486535B1 (en) 2010-05-24 2013-07-16 Rockwell Collins, Inc. Systems and methods for adherable and removable thin flexible glass
US8576370B1 (en) 2010-06-30 2013-11-05 Rockwell Collins, Inc. Systems and methods for nonplanar laminated assemblies
US8643260B1 (en) 2011-09-02 2014-02-04 Rockwell Collins, Inc. Systems and methods for display assemblies having printed masking
US8647727B1 (en) 2012-06-29 2014-02-11 Rockwell Colllins, Inc. Optical assembly with adhesive layers configured for diffusion
US9384586B1 (en) 2013-04-05 2016-07-05 Rockwell Collins, Inc. Enhanced flight vision system and method with radar sensing and pilot monitoring display
US9981460B1 (en) 2014-05-06 2018-05-29 Rockwell Collins, Inc. Systems and methods for substrate lamination
US10228460B1 (en) 2016-05-26 2019-03-12 Rockwell Collins, Inc. Weather radar enabled low visibility operation system and method
US10353068B1 (en) 2016-07-28 2019-07-16 Rockwell Collins, Inc. Weather radar enabled offshore operation system and method

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