TWI528070B - Method of removing the polymer film of LCD module by microwave heating - Google Patents
Method of removing the polymer film of LCD module by microwave heating Download PDFInfo
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- TWI528070B TWI528070B TW103114261A TW103114261A TWI528070B TW I528070 B TWI528070 B TW I528070B TW 103114261 A TW103114261 A TW 103114261A TW 103114261 A TW103114261 A TW 103114261A TW I528070 B TWI528070 B TW I528070B
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- 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
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- 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
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
- G02F1/133334—Electromagnetic shields
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Description
本發明係有關於一種微波加熱分離液晶玻璃的高分子膜之方法，特別是指利用微波加熱，使高分子膜與液晶玻璃面板之間的接合程度降低，而易於自液晶玻璃面板上去除之方法。 The invention relates to a method for microwave heating and separating a polymer film of a liquid crystal glass, in particular to a method for reducing the degree of bonding between a polymer film and a liquid crystal glass panel by microwave heating, and being easy to remove from a liquid crystal glass panel. .
液晶顯示器是發展最快速，也是目前最普遍使用的顯示器，而隨著汰舊潮逐漸顯現，為了避免廢棄液晶玻璃造成環境危害，回收廢棄液晶玻璃因此相形重要。 Liquid crystal displays are the fastest-growing and currently the most commonly used displays, and as the old tides gradually emerge, recycling waste LCD glass is so important in order to avoid environmental hazards caused by the disposal of liquid crystal glass.
廢棄液晶玻璃回收一個重要的步驟是去除貼附在液晶玻璃面板上的高分子膜，例如偏光膜。早期處理的手段是將廢棄液晶玻璃加熱使偏光膜燃燒去除，而燃燒去除的方式除了玻璃的熱傳效果較慢，處理時間較長之外，偏光膜燃燒所產生的廢氣也需加以處理，避免污染空氣，加上容易有殘碳留在玻璃表面，因而處理成本高。再者，偏光膜一般為PET材質，是高價值塑料，直接燃燒去除也使其無法回收再利用。 An important step in recycling the discarded liquid crystal glass is to remove the polymer film attached to the liquid crystal glass panel, such as a polarizing film. The method of early treatment is to heat the waste liquid crystal glass to remove the polarizing film, and the method of combustion removal is slower than the heat transfer effect of the glass, and the treatment time is longer, the exhaust gas generated by the combustion of the polarizing film needs to be treated to avoid Contaminated air, coupled with easy residual carbon remaining on the glass surface, is therefore costly to handle. Furthermore, the polarizing film is generally made of PET, which is a high-value plastic, which can not be recycled and reused by direct combustion.
其中，中華民國發明專利第527232號「廢液晶顯示器之資源回收處理裝置及方法」中揭露一種去除偏光膜的方法，該方法可解決前述燒除偏光膜產生廢氣的問題，先將平面顯示器的玻璃精密切割下來，用超音波震盪和浸漬酒精溶劑將液晶材料分離再予焚化，加熱所餘黏附偏光膜的玻璃片至150℃，經由加熱一段時間之銦鈦氧化物導電玻璃基板浸漬在隔溫式液態氮浸漬槽後，以令其下方的偏光膜脫落；由於對偏光膜整體加熱會使其軟化，貼附於玻璃的 黏性會更高，因此藉由偏光膜上黏性物質尚未完全乾燥固結，利用加熱後急速冷卻的效應使偏光膜的黏性物質無法穩固黏結在玻璃上而易於剝離脫落。但是上述方式處理的時間較長，並且需要將液晶玻璃浸漬液態氮中，所需處理成本也較高。 Among them, the Republic of China Invention Patent No. 527232 "Resource Recycling Device and Method for Waste Liquid Crystal Display" discloses a method for removing a polarizing film, which can solve the problem of exhausting the exhaust gas generated by the polarizing film, firstly, the glass of the flat display After precision cutting, the liquid crystal material is separated and incinerated by ultrasonic vibration and impregnation of alcohol solvent, and the glass sheet with the remaining polarizing film is heated to 150 ° C, and immersed in a temperature-isolated manner through an indium titanium oxide conductive glass substrate heated for a period of time. After the liquid nitrogen is immersed in the bath, the polarizing film below it is peeled off; since the entire polarizing film is heated to soften it, it is attached to the glass. The viscosity is higher. Therefore, the viscous material on the polarizing film is not completely dried and consolidated, and the effect of rapid cooling after heating causes the viscous material of the polarizing film to be stably adhered to the glass and is easily peeled off. However, the above method takes a long time to process, and it is necessary to impregnate the liquid crystal glass in liquid nitrogen, and the processing cost is also high.
本案發明人曾提出中華民國專利第I233843「回收液晶螢幕之微波乾燥製程」，該案中針對廢棄液晶玻璃面板在經過溼式製程的回收處理後，最終需要乾燥處理，而傳統熱風乾燥和紅外線加熱方式耗時較久，因此提出微波加熱的乾燥製程，主要是利用微波的選擇性加熱特性，其中玻璃不吸收微波，而水在吸收微波後，瞬間高熱使水分迅速蒸發，縮短乾燥處理時間。 The inventor of the present invention has proposed the Republic of China Patent No. I233843 "Microwave Drying Process for Recycling Liquid Crystal Screens", in which the waste liquid crystal glass panels are finally subjected to a drying process after being subjected to a wet process, and the conventional hot air drying and infrared heating are required. The method takes a long time, so the microwave heating drying process is mainly based on the selective heating characteristics of the microwave, wherein the glass does not absorb the microwave, and after the water absorbs the microwave, the instantaneous high heat causes the water to evaporate rapidly, shortening the drying treatment time.
基於微波選擇式加熱的特性，由於金屬被微波作用後亦會產生熱反應，發明人進一步利用廢棄液晶玻璃面板上殘留均勻分布的導線，因此對導線施加微波，導線被微波作用後產生高熱，會使鄰近液晶玻璃面板上的高分子膜上的黏膠因受熱而破壞，習知技術認為由於對偏光膜整體加熱會使其軟化，貼附於玻璃的黏性會更高，不易於剝離脫落，但本案採局部加熱方式，熱量作用於破壞黏膠，而不是對整體偏光膜加熱軟化，因而降低與液晶玻璃面板之間的接合程度，使之易於去除，不僅技術手段不同，產生的破壞的機制功能是採感應加熱方式，破壞效果亦集中在黏膠上。 Based on the characteristics of microwave selective heating, since the metal also generates a thermal reaction after being subjected to microwaves, the inventors further utilize the uniformly distributed wires remaining on the waste liquid crystal glass panel, thereby applying microwaves to the wires, and the wires are heated by microwaves to generate high heat. The adhesive on the polymer film on the adjacent liquid crystal glass panel is destroyed by heat. It is considered that the polarizing film is softened by heating the whole of the polarizing film, and the adhesion to the glass is higher, and it is not easy to peel off. However, in this case, the local heating method is adopted, and the heat acts on destroying the adhesive, instead of heating and softening the entire polarizing film, thereby reducing the degree of bonding with the liquid crystal glass panel, making it easy to remove, not only the technical means, but also the mechanism of destruction. The function is to use induction heating, and the damage effect is also concentrated on the glue.
本發明是一種微波加熱分離液晶玻璃的高分子膜之方法，包括下列步驟：A.將一微波施加在一液晶玻璃面板上；B.該微波作用在該液晶玻璃面板上的一導線，產生熱反應，使該液晶玻璃面板上的一高分子膜降低與前述液晶玻璃面板的接合程度；C.將該高分子膜自該液晶玻璃面板上去除。 The invention relates to a method for microwave heating and separating a polymer film of a liquid crystal glass, comprising the following steps: A. applying a microwave to a liquid crystal glass panel; B. applying a microwave to a wire on the liquid crystal glass panel to generate heat The reaction reduces the degree of bonding of a polymer film on the liquid crystal glass panel to the liquid crystal glass panel; C. removing the polymer film from the liquid crystal glass panel.
進一步，步驟B所述降低該高分子膜與前述液晶玻璃面板的接合程度係指降低該高分子膜與前述液晶玻璃面板之間的一接合層的黏結強度，其中該接合層例如黏膠。 Further, reducing the degree of bonding of the polymer film to the liquid crystal glass panel in step B means reducing the bonding strength of a bonding layer between the polymer film and the liquid crystal glass panel, wherein the bonding layer is, for example, a glue.
進一步，步驟C所指的去除係指將該高分子膜自該液晶玻璃面板上剝離。 Further, the removal referred to in the step C means that the polymer film is peeled off from the liquid crystal glass panel.
進一步在步驟A中，對於內容積介於17公升至20公升的微波場，該微波的功率介於800瓦至1000瓦，微波作用時間介於10秒至40秒。較佳的是，該微波的功率為900瓦，微波作用時間為30秒。 Further in step A, for a microwave field having an internal volume of between 17 liters and 20 liters, the power of the microwave is between 800 watts and 1000 watts, and the microwave action time is between 10 seconds and 40 seconds. Preferably, the microwave has a power of 900 watts and a microwave action time of 30 seconds.
進一步，所述高分子膜為偏光膜。利用前述功率來去除偏光膜時，所述偏光膜厚度較佳為0.4毫米。 Further, the polymer film is a polarizing film. When the polarizing film is removed by the aforementioned power, the thickness of the polarizing film is preferably 0.4 mm.
本發明的功效在於： The effect of the invention is:
1.本發明的方法可以快速去除液晶玻璃面板上的高分子膜，例如以900瓦的微波去除面積為50mm*50mm之液晶玻璃面板上，厚度為0.4mm的偏光膜，僅需要不到30秒的時間，不僅加熱時間短，冷卻時間亦短；且除了處理時間短之外，微波處理成本較習知方式便宜。 1. The method of the invention can quickly remove the polymer film on the liquid crystal glass panel, for example, a polarizing film with a thickness of 0.4 mm on a liquid crystal glass panel with a surface area of 50 mm*50 mm and a microwave of 900 watts, which takes less than 30 seconds. The time is not only short heating time, but also short cooling time; and in addition to short processing time, the microwave processing cost is cheaper than the conventional method.
2.使用本發明的方法來去除液晶玻璃面板上的高分子膜，該高分子膜被燒除的比例很少，小於10%，不會產生太多廢氣，甚至回收的高分子膜也可進一步再利用。 2. Using the method of the present invention to remove the polymer film on the liquid crystal glass panel, the polymer film is burned out in a small proportion, less than 10%, does not generate too much exhaust gas, and even the recovered polymer film can be further Reuse.
3.前述導線被微波作用產生熱量後，液晶玻璃面板的玻璃部分會吸收熱量使內部因高溫膨脹產生氣泡，形成多孔玻璃，因此液晶玻璃面板在去除高分子膜之後經過後續處理，藉由玻璃上的氣泡同時具有隔熱的功效，可作為具隔熱效果的輕量建材使用；藉由殘留在該玻璃上均勻分布的導線具有隔絕電磁波的作用，此玻璃材亦具電磁波遮蔽功能。 3. After the wire is heated by microwaves, the glass portion of the liquid crystal glass panel absorbs heat to cause bubbles to form a porous glass due to high temperature expansion, so that the liquid crystal glass panel is subjected to subsequent processing after removing the polymer film, by using glass. The bubble has the function of heat insulation and can be used as a lightweight building material with heat insulation effect; the glass material also has electromagnetic wave shielding function by the electromagnetic wave shielding function by the wire which is evenly distributed on the glass.
(1)‧‧‧液晶玻璃面板 (1)‧‧‧Liquid glass panel
(2)‧‧‧偏光膜 (2) ‧‧‧ polarizing film
(3)‧‧‧接合層 (3) ‧‧‧ bonding layer
(4)‧‧‧導線 (4) ‧‧‧ wires
[第一圖]係為本發明實施例的流程圖。 [First Figure] is a flow chart of an embodiment of the present invention.
[第二圖]係為本發明實施例中，液晶玻璃面板與偏光膜的結合型態示意圖。 [Second diagram] is a schematic diagram of a combination of a liquid crystal glass panel and a polarizing film in the embodiment of the present invention.
[第三圖]係為本發明實施例中，液晶玻璃面板上的導線分佈示意圖。 [Third Figure] is a schematic view showing the distribution of wires on a liquid crystal glass panel in the embodiment of the present invention.
綜合上述技術特徵，本發明微波加熱分離液晶玻璃的高分子膜之方法的主要功效將可於下述實施例清楚呈現。 In summary of the above technical features, the main effects of the method of microwave heating the polymer film of the liquid crystal glass of the present invention will be clearly shown in the following examples.
請參閱第一圖及第二圖所示，本實施例施加一微波在一液晶玻璃面板(1)上，以去除該液晶玻璃面板(1)上的一高分子膜，本實施例以偏光膜(2)為例，其中該偏光膜(2)透過一接合層(3)而結合在該液晶玻璃面板(1)上，該接合層(3)例如為黏膠： Referring to the first and second figures, in this embodiment, a microwave is applied to a liquid crystal glass panel (1) to remove a polymer film on the liquid crystal glass panel (1). This embodiment uses a polarizing film. (2) As an example, the polarizing film (2) is bonded to the liquid crystal glass panel (1) through a bonding layer (3), for example, an adhesive:
A.微波作用於前述液晶玻璃面板(1)的功率介於800瓦至1000瓦，微波作用時間介於10秒至40秒；較佳的是，該微波的功率為900瓦，微波作用時間為30秒。本實施例以面積為50mm*50mm，厚度為0.8mm之液晶玻璃面板(1)，該液晶玻璃面板(1)上的偏光膜(2)厚度為0.4mm進行實驗，其中微波功率為900瓦，微波時間分別為10秒及30秒。 A. The microwave acts on the liquid crystal glass panel (1) with a power of 800 watts to 1000 watts, and the microwave action time is between 10 seconds and 40 seconds; preferably, the microwave power is 900 watts, and the microwave action time is 30 seconds. In this embodiment, a liquid crystal glass panel (1) having an area of 50 mm*50 mm and a thickness of 0.8 mm is used, and a polarizing film (2) on the liquid crystal glass panel (1) has a thickness of 0.4 mm, wherein the microwave power is 900 watts. The microwave time is 10 seconds and 30 seconds respectively.
B.參閱第三圖所示，該液晶玻璃面板(1)上有矩陣型態的導線(4)，一般材質是不鏽鋼、鋁、銦錫氧化物或片狀薄銅。當前述微波施加在前述液晶玻璃面板(1)時，由於微波選擇式加熱的特性，該導線(4)會受該微波作用而產生熱反應。 B. As shown in the third figure, the liquid crystal glass panel (1) has a matrix type wire (4), which is generally made of stainless steel, aluminum, indium tin oxide or sheet-like thin copper. When the aforementioned microwave is applied to the liquid crystal glass panel (1), the wire (4) is subjected to the microwave to generate a thermal reaction due to the characteristics of the microwave selective heating.
C.請參閱附件一所示，前述接合層(3)吸收該導線(4)所產生的熱，因而降低與該偏光膜(2)及該液晶玻璃面板(1)的黏結強度，使該偏光膜(2)與該液晶玻璃面板(1)的接合程度下降，附件一為部分接合 層(3)或者進一步有部份偏光膜(1)因吸熱而瞬間燃燒產生的白光。再參閱附件二及附件三，容積17.9公升的微波場，其中微波加熱10秒時，測量溫度約為157℃，偏光膜(2)損失重量為0.02克；微波加熱30秒時，測量溫度約為178℃，偏光膜(2)損失重量為0.09克。參閱附件四所示，該偏光膜(2)的其餘部分則因瞬間高溫而沿著該導線(4)的分布型態破裂。 C. As shown in Annex 1, the bonding layer (3) absorbs the heat generated by the wire (4), thereby reducing the bonding strength with the polarizing film (2) and the liquid crystal glass panel (1), so that the polarizing The degree of bonding between the film (2) and the liquid crystal glass panel (1) is lowered, and the attachment is partially joined. The layer (3) or further a portion of the polarizing film (1) is white light generated by instantaneous combustion due to heat absorption. Referring to Annex II and Annex III, the microwave field with a volume of 17.9 liters, in which the microwave is heated for 10 seconds, the measured temperature is about 157 ° C, the loss of the polarizing film (2) is 0.02 g; when the microwave is heated for 30 seconds, the measured temperature is about The loss of the polarizing film (2) at 178 ° C was 0.09 g. Referring to Annex IV, the rest of the polarizing film (2) is broken along the distribution pattern of the wire (4) due to the instantaneous high temperature.
D.此時可輕易將該偏光膜(2)自該液晶玻璃面板(1)上剝離去除，微波處理前後的分離所需的力量相差4倍至10倍，效果顯著。 D. At this time, the polarizing film (2) can be easily peeled off from the liquid crystal glass panel (1), and the force required for separation before and after microwave processing differs by 4 to 10 times, and the effect is remarkable.
值得一提的是，前述導線(4)受該微波作用而產生熱量後，該液晶玻璃面板(1)的玻璃部分亦會吸收熱量使玻璃內部因高溫膨脹產生氣泡，因此該液晶玻璃面板(1)回收後再經過後續處理，可作為輕量建材使用。藉由該液晶玻璃面板(1)上的氣泡具有隔熱的功效；藉由殘留在該該液晶玻璃面板(1)上均勻分布的導線(3)具有隔絕電磁波的作用，亦即微波處理後的玻璃其性質與習知技術不同。 It is worth mentioning that after the wire (4) is subjected to the action of the microwave to generate heat, the glass portion of the liquid crystal glass panel (1) also absorbs heat to cause bubbles to be generated due to high temperature expansion inside the glass, so the liquid crystal glass panel (1) After recycling, it can be used as lightweight building materials after subsequent processing. The air bubbles on the liquid crystal glass panel (1) have the function of heat insulation; the wires (3) uniformly distributed on the liquid crystal glass panel (1) have the function of isolating electromagnetic waves, that is, after microwave treatment. The properties of glass are different from conventional techniques.
綜合上述實施例之說明，當可充分瞭解本發明之操作、使用及本發明產生之功效，惟以上所述實施例僅係為本發明之較佳實施例，當不能以此限定本發明實施之範圍，即依本發明申請專利範圍及發明說明內容所作簡單的等效變化與修飾，皆屬本發明涵蓋之範圍內。 In view of the foregoing description of the embodiments, the operation and the use of the present invention and the effects of the present invention are fully understood, but the above described embodiments are merely preferred embodiments of the present invention, and the invention may not be limited thereto. Included within the scope of the present invention are the scope of the present invention.
Claims (9)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW103114261A TWI528070B (en) | 2014-04-18 | 2014-04-18 | Method of removing the polymer film of LCD module by microwave heating |
| CN201510182153.7A CN105022181B (en) | 2014-04-18 | 2015-04-17 | Method for separating polarizing film of liquid crystal glass by microwave heating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW103114261A TWI528070B (en) | 2014-04-18 | 2014-04-18 | Method of removing the polymer film of LCD module by microwave heating |
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| Publication Number | Publication Date |
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| TW201541146A TW201541146A (en) | 2015-11-01 |
| TWI528070B true TWI528070B (en) | 2016-04-01 |
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| TW103114261A TWI528070B (en) | 2014-04-18 | 2014-04-18 | Method of removing the polymer film of LCD module by microwave heating |
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| CN (1) | CN105022181B (en) |
| TW (1) | TWI528070B (en) |
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| CN105353544A (en) * | 2015-12-05 | 2016-02-24 | 邱成峰 | Method for manufacturing flexible LCD panel |
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| CN100477079C (en) * | 1996-08-27 | 2009-04-08 | 精工爱普生株式会社 | Transferring method |
| CA2341548C (en) * | 1998-08-27 | 2006-12-19 | Anon, Inc. | Method of removing organic materials from substrates |
| TW527232B (en) * | 2001-01-10 | 2003-04-11 | Ching-Hua Li | Device and method for recycling and processing disposed LCD |
| SG165202A1 (en) * | 2009-03-25 | 2010-10-28 | United Technologies Corp | Method and apparatus for cleaning a component using microwave radiation |
| CN101920592A (en) * | 2009-06-10 | 2010-12-22 | 友达光电(厦门)有限公司 | Polarizer stripping device and stripping method thereof |
| CN103021821B (en) * | 2012-11-27 | 2016-09-28 | 复旦大学 | The method for annealing of the semiconductor structure being positioned in flexible substrate |
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| CN105022181A (en) | 2015-11-04 |
| TW201541146A (en) | 2015-11-01 |
| CN105022181B (en) | 2017-12-29 |
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