TW536430B - Method for recycling LCD resources - Google Patents

Abstract

This invention provides a method for recycling LCD resources, comprising the steps of: piercing disposed LCD panels and introducing it into a sealed furnace for multiple-stage heating; discharging exhaust after being catalyzed, coking the plastic by heat decomposition, rubbing and demolding, separating the plated film layer to obtain clean glass sheets. The plated oxides separated during the process may be recycled to serve as color additives. The clean glasses may be crushed to allow further recycles.

Description

536430 V. Description of the invention α) The present invention relates to a method for treating resources of a liquid crystal display. The method mainly involves breaking an abandoned liquid crystal display panel into a closed furnace and heating it in sections. After the rubbing and de-filming process, the money film layer is separated to form a clean glass sheet. The separated mineral film oxide can be recovered as a colorant additive. The clean glass sheet can be reused after crushing and processing. With the development of the electronics industry, the environmental issues that follow have also caused headaches for the operators and related authorities. Liquid crystal display (Liquid Crysta 1 D is ρ 1 ay hereinafter referred to as LCD) Generally there are TN (Twisted Nematic) liquid crystal display, STN (Super Twisted Nematic) liquid crystal display, TFT (Thin film transistor) liquid crystal display and LTPS (Low Temperature Poly S i 1 ic ο Liquid display "Take a thin film transistor liquid crystal display (τ hin film transistor liquid crystal display) TFT-LCD as an example, its appearance dates back to 1962, the engineer of the RCA laboratory in the United States Paul Wei mer proposed thin film transistor liquid crystal display technology; 1988 Sharp Corporation (Sharp) made the first j 4-inch liquid crystal display panel. Since then, let the computer screen completely slump, from heavy and large to light and thin. Comparing a 15-inch CRT screen with a liquid crystal display, the weight of a liquid crystal display is only about half that of a CRT, and the depth is about one third of that of a CRT. In addition, the yield of TFT-LCD panels has been continuously improved, and the sales volume has been declining. Therefore, it has largely replaced traditional CRT fluorescent lamps. TFT-LCD thin film transistor liquid crystal display mainly includes glass substrate, shirt color filter, polarizing plate, backlight module and driver [C, among which,

Page 4 536430 V. Description of the invention (2) The upper and lower glass substrates are used to hold the liquid crystal. The lower glass has a thin gland φTinin film 十 十 TI? Τ Λ -r * »cj. Thin film transistor (TFT), while the upper layer is glass, electric, color filter, the surface of the glass is coated with a layer of poly, polyimide [or ITO film] alignment film (align 11 1 m ), / Function Provides the interface condition that the liquid crystal molecules are uniformly arranged, and the order of the Japanese knives is arranged. The general CRT screen uses high-speed thunder and lightning to strike the fluorescent powder on the silver screen according to the pre-displayed electrons. In order to produce bright light, the county emits daylight, but the liquid crystal display itself can only control the light flow. The display itself does not have the function of emitting light. Therefore, the liquid crystal display must be a pig. L, breadth and shavings plus a back light board (back light, BL) to provide a light source with high brightness and brightness distribution. Finally, with the help of Prism Sheet and diffuser plate, 77 evenly distributes the light to each area to provide a TFT LCD—a bright light 'source. There are also two structural components, Sealant and Spacer. The purpose of the frame adhesive is to make the upper and lower layers of glass in the liquid crystal panel adhere tightly and to block the liquid crystal molecules in the panel from the outside world. Therefore, the frame adhesive, as its name implies, surrounds the panel and limits the liquid crystal molecular frame to the panel. within. The Spacer mainly provides support for the upper and lower glass layers. It must be evenly distributed on the glass substrate. Once the uneven distribution causes some Spacer to gather together, it will hinder the passage of light, and it will not be able to maintain a proper gap between the upper and lower glass. (Gap) 'causes the phenomenon of uneven electric field distribution, which in turn affects the grayscale performance of the liquid crystal. However, because the TFT-LCD contains small molecular structures—night crystals, ordinary recycling methods cannot be used, because liquid crystals and heavy metal emulsions are 'easy to cause pollution' and cannot be recycled for use in the glass industry. , Can only be used in low-level, pollution-free industries, and

536430 V. Description of the invention (3) The heavy metal treatment cannot be discarded, which will inevitably eliminate the need for the treatment of the present invention. Recycling is used as the source of the raw materials for heavy coloring materials. The treatment is a descendant of the offspring. After the resource treatment, the coated oxygen that enters the closed furnace and is detached by grinding is pulverized. Please refer to the display resource crushing: the inventor who divided the closed furnace or buried the oxide, knows the best After the metal oxygen, the cost of the structural strength of the material compartments can be prevented. The method of the present invention is left. "Segmented film treatment can be used as a resource to treat the pollution of the waste heat treatment in the first pattern. The lack, in view of the fact that in the future, only the waste treatment method will be used to coat the glass and the glass treatment method will be used to light the ceiling.) The cost is higher. The main purpose of chasing a piece of pure land is to recover the heat by touching and separating the money. The method of the present invention for the reuser includes a liquid crystal display: the broken or prepared stone is used for paving the road. This is a problem that the LCD LCD will cry back in the future. Potential recycling of abandoned liquid crystal displays for resource treatment 'Separate the liquid crystal of waste liquid crystal displays from glass and separate them into metal oxide-grade post-processing for fire and heat resistance,' Can be used for fire-resistant metal door inner layer insulation, furnace insulation lining And Lengkang insulation materials (which can reduce the overall weight of the building and can be used as a 100% resource, although some 'but can make the industry worry-free,' should be a worthwhile choice. It is to provide a "LCD display system will be discarded The liquid crystal display panel breaks through the catalytic exhaust of media, plastics pyrolysis and coking, and the film is formed into a clean glass sheet. Feed additive, may be square clean glass flowchart step embodiment, the liquid crystal of the present invention has the following steps: break open the panel; the liquid crystal display panel into the closed

536430

In the kiln, heating in stages; catalytic exhaust by catalyst: exhaust after catalytic catalysis; pyrolysis and coking of plastic: glass breakage; rubbing and stripping treatment: glass separation; separation coating layer: first, second stage Coking and shredding of plastics by heating u Coking and shredding of plastics on the glass surface and plating materials and three-stage reheating will remove the plastics that have been separated from the glass. Selective oxides: recovery of incombustible bond film oxidation The material can be crushed and added to glass flakes: clean glass flakes are recovered, and the clean glass flakes are processed into fine glass powder; the above-mentioned resource recycling device of the present invention separates them into heavy glass fine powder that can be recycled. The method can describe the waste liquid crystal display metal oxide particles and clean broken materials as oxygen: the material particles can be regenerated into resources, and the heavy metal gasification umbrellas, umbrellas, Φ 彳, etc. can be blended with other raw materials. Subsequent oxide color raw materials The aforementioned clean glass closed mixed grinding of the present invention: grinding to a smaller powder; [appropriate proportion materials as required, which include the following: ionization, regeneration, ... Build a clean slope glass fine powder and add a foaming agent after mixing. If you want to improve the fire and heat resistance of the finished product, you can press / 4 to add a refractory additive (such as silt, waste soil).

536430 V. Description of the invention (5) etc.]] Foam firing: enter the kiln according to the preset firing curve, foam firing light bone building materials; Xu cold annealing: Creep annealing according to the preset Xu cold curve; Processing: It is processed into plate shape and ball shape according to the predetermined size to transport light bone building materials in various buildings. The aforementioned clean glass fine powder of the present invention can be recycled into a refractory and heat-insulating material, which includes the following steps: Closed mixing and grinding: the aforementioned clean glass fine powder is added with an appropriate proportion of ceramic fiber powder and carbon according to the mixing proportion by weight. And carbon or sulfur compounds [with 10-14% ceramic fiber powder (for increasing the refractory temperature and increasing the strength of the surface of the foam), 5-8% carbon and 5-8% broken or sulfur compounds are The ceramic fiber powder is refractory ceramic fiber, or may be refractory powder, such as kaolin, calcium carbonate, etc.], and then mixed and milled in a closed tube mill to a smaller powder (preferably above 3 0 0 #) Mold: Put the powder which is sealed and mixed into a fixed mold, and brush the inner edge of the mold with a layer of release agent [such as alumina powder 9 0 -9 5 ° / 〇, kaolin 5-1 0 %]; Foam firing: enter the furnace and fire the foamed refractory insulation material according to the preset firing curve; Xu cold annealing: annealing according to the preset Xu cooling curve; cutting and refurbishing: annealing by cooling After the fire insulation material by the mold Removed, then the predetermined size of the crop size; brushing reinforced refractory coating: depending on needs adiabatic refractory, material in vitro heat off,

Net) 'is used to increase the fire resistance temperature and JFF fire insulation coating fiber weaving. This is made of fire resistance II that can be transported in various environments; the strength of the foam surface, such as layer insulation, building compartments, fire prevention, thermal materials ( (Such as fire-resistant metal door insulation materials ...). Regeneration, kiln insulation lining and frozen glass fine powder can be used as raw materials, recycled into raw materials for walls and floor tiles, which include the aforementioned raw materials for clean glass in the present invention, or ceramics. The steps are as follows:

After ’, the above-mentioned materials can be made into the wall :::::::: materials for bad products and glazed materials. In this way, the problem of researching the smoke of the present invention is achieved in this way, and the resource & raw material = environmental protection and discarding. The features of the present invention are widely used in the green environmental protection industrial cycle. 1. The light bony building bismuth I wp ^ of the present invention, and the strong sound of hibiscus. This kind of 坌 a ΐ reduces the overall weight of the building, but does not damage j; 53 ϊΐ 2 2 The raw materials of the building materials are made of domestic raw materials. The light-weight building materials mentioned above are used as the main raw material, that is, to eliminate the effect of the same amount of products of the same nature in the past, so they do not absorb water. Therefore, the light-weight building materials of the present invention do not absorb water at all. . Material t 发明 Invention = ί is a waste of liquid crystal display as a raw material, which greatly reduces the original cost, and the environmental pollution caused by waste liquid crystal display. 53643〇 V. Tiuming (明 7 ^ The present invention uses waste liquid crystal display to break glass to add reservoir sludge or waste soil and / > encapsulant, after foaming molding, made into block-shaped building materials, and cement with 2: 1 question Product ratio) Mixed concrete is suitable for all building bodies after hardening. 100. The M-sourced refractory and heat-insulating material of the present invention can be recycled and reused after being discarded, without environmental protection problems. Applied to κη compartments, fire-resistant filling materials can fully comply with the fire-resistant material standard, and can eliminate the conventional thermal insulation materials such as rock wool, glass =, and Μ 帛 material, which will lose the insulation effect due to rainwater infiltration (because it does not absorb water). It is used as a thermal insulation filling material for refrigerated vehicles, replacing the current foam insulation material, which meets the requirements of green environmental protection and increases the strength of the car body shell. 6 · The raw materials used in the present invention are originally used TV or computer abandoned LCD monitors as the main raw materials. Because the material is very close to the main feldspar of ceramics, different types of video tubes can be made after adding other raw materials for formulation adjustment. It can be used as the raw material of the bad body of the wall and floor tiles, and the raw material of the bad product and the glaze. Α Tao Chonggong In summary, a "liquid crystal display processing method" disclosed in the present invention is unprecedented, nor has it been seen in domestic and foreign public patents, which already have the "new I: sex" patent requirements. Invention; can: = use technology missing, and achieve ten purposes of invention, and also fully comply with the "highly creative use of the technical ideas of natural law and have industrial value, according to Article 19 of the Patent Law ^ Please, please invite your reviewing committee to review and grant this offer. This patent 'real sense but the above' is just one possible embodiment of the present invention.

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536430 Brief description of the diagram Brief description of the diagram: The first diagram is a flowchart of the method of the present invention.

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Claims (1)

W6430 VI. Scope of patent application1. One type of plant is: Crushing: Atmospheric Tunnel Furnace Catalyst Catalytic Exhaust Catalyzed by Waste Closed Furnace Catalytic Catalyst Catalyzed Back Plastic Pyrolysis and Breaking Glass Break; Glass Breaking at Rubbing and Delaminating Place; Separate the coating layer to the end; Heavy metal oxide glass flakes: Reworked into glass fine powder, so the waste oxide powder particles 2 · According to the Shenhua treatment method "After blending, 3 · According to the Shenhua treatment method" Next steps: LCD The display resource processing method includes the steps of breaking open the LCD panel;: heat: heating the broken LCD panel in sections; ~ closed gas: the first stage of heating causes the liquid crystal to evaporate and evaporates the gas; The liquid crystal is chemically heated. • The second stage of heating causes the plastic to scorch and make it reasonable: • the surface of the glass is scorched and shattered plastic; and • the third stage is reheated to remove the plastic that has detached from the glass: recycle the non-burnable material Of coated oxides; collect clean glass sheets and clean broken glass Η • Double-walled films can be separated into resources and clean by smashing money and liquid crystal displays. Glass powder. Please refer to item 1 of the patent scope for "heavy liquid crystal display," wherein "the heavy metal oxide particles are then reduced to raw materials of metal oxide colorants. ^ ^ Please refer to" liquid crystal in the patent scope μ " Significantly…, it can be regenerated into light bone and built up ^ σ shell material, which includes raw materials 536430 Six, patent application Sealed mixed grinding: Add clean glass fine powder to foaming agent and mix and grind to smaller powder; Foam firing: enter the kiln according to the preset firing curve, and the foaming is light. Bone building materials; Xu cold annealing: According to the preset cold curve, cold annealing; Processing: It is processed into plate shape and ball shape according to the predetermined size to transport light bone building materials in various buildings. 4. According to the "recycling method for liquid crystal display" described in item 3 of the scope of the patent application, in the closed mixed grinding process, a refractory additive can be added in an appropriate proportion according to demand to improve the fire and heat resistance of the finished product. 5. According to the "recycling method for liquid crystal display" described in item 4 of the scope of the patent application, wherein the refractory increasing material is silt or waste soil. 6. According to the "resource treatment method for liquid crystal display" described in item 1 of the scope of patent application, it can be recycled into refractory and heat-insulating materials, which includes the following steps: Closed mixing and grinding: clean glass fine powder is mixed as Proportion weight After adding the appropriate proportion of ceramic fiber powder, lignin and flaky graphite, mix and grind it to a smaller powder in a closed tube mill; Mold: Put the powder after closed mixed grinding into a fixed mold. The inner edge is pre-painted with a layer of mold release agent in a blending ratio; Foaming firing: firing into the furnace according to a preset firing curve to fire the foamed refractory insulation material; Xu cold annealing: according to the preset Xu cold curve Cold annealing 536430 VI. Applying for a second amendment to the scope of patent application: Take out the refractory heat-insulating material after cold annealing and take it out of the mold, and then cut it according to the predetermined size;: i-coated reinforced refractory coating Outside the material, a layer of reinforced refractory coating is used to increase the refractory temperature and increase the strength of the foaming material: the surface is made of refractory insulation materials that can be transported in various environments. 7 · According to item e in the scope of the patent application "Liquid crystal display resource = physical method", in which the closed mixing and grinding procedure uses 10-14% = fiber powder, 5-8% plain, and 5-8% carbon or sulfur compound. 8. According to the application The "liquid crystal display resource-processing method" described in item 7 of the patent scope, wherein the ceramic fiber powder is refractory ceramic fiber, or terbium, calcium carbonate and other refractory powder. 9 · According to the "recycling method for liquid crystal display" described in item 6 of the scope of the patent application, the mold release agent layer pre-brushed on the inner edge of the mold is 90-95% of gasified aluminum powder and 5-10% of kaolin. . Lice 10. According to the "Liquidation of Liquid Crystal Display" described in Item 丨 of the scope of the patent application, Kung can be regenerated into bad materials for walls and floor tiles, or bad materials and glaze materials for ceramic products. , Which includes the following steps a raw material? Closing: After adding other raw materials to adjust the formula, it is finished: in the bad body original of the wall and floor tile #, the bad body of the mechanical product, ㈡ page 15