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Apparatus for extracting liquid crystal by heating under reduced pressure and method thereof

A technology of decompression heating and processing equipment, which is applied in the direction of using atmospheric pressure to chemically change substances, evaporation equipment, separation methods, etc., and can solve problems such as unsatisfactory safety and liquid crystal transformation.

Inactive Publication Date: 2006-03-08
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, when the processing temperature reaches a high temperature of 200 to 800 degrees, the evaporated liquid crystal may become harmful substances such as dioxin and PCB, so it is not satisfactory in terms of safety.

Method used

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  • Apparatus for extracting liquid crystal by heating under reduced pressure and method thereof
  • Apparatus for extracting liquid crystal by heating under reduced pressure and method thereof
  • Apparatus for extracting liquid crystal by heating under reduced pressure and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] figure 1 It is a perspective view showing the cavity in the liquid crystal extracting and processing device adopting reduced-pressure heating according to Embodiment 1 of the present invention, figure 2 is partially cut away to indicate configuration in figure 1 A perspective view of the tray and heating wires inside the chamber.

[0043] figure 1 The external appearance of the chamber 20 for performing the decompression heat treatment in the liquid crystal extraction treatment apparatus for extracting liquid crystals from the waste liquid crystal panel 10 by the decompression heat treatment is shown. The cavity 20 has an unillustrated heating means ( Figure 10 Symbol 21), the above-mentioned decompression pump is set as a decompression device to a decompression state, and the waste liquid crystal panel is heat-treated under the decompression state. Inside the cavity 20 are arranged a tray 28 holding a plurality of waste liquid crystal panels and a heater wire 27 ...

Embodiment 2

[0068] In Example 1 Figure 1 to Figure 5 The description above is a sealing type in which the waste liquid crystal panel 10 has the sealing part 7a, and is a method of heating the heater wire 27 in contact with the sealing material 7b that seals the sealing part 7a.

[0069] On the other hand, the waste liquid crystal panel 10 has the non-seal type liquid crystal panel which does not have a sealing part. Such as Image 6 As shown in (b), the liquid crystal panel of the unsealed type is formed by affixing the sealing material 7 to the inner side at a predetermined distance from the outer periphery on one glass substrate 1a of the two glass substrates in a closed ring shape. An appropriate amount of liquid crystal 9 is dropped in the enclosed space with a dropping device not shown, and the other glass substrate 1 b is placed facing each other in this state and bonded. Therefore, in the unsealed liquid crystal panel, there is no such image 3 or Figure 9 The sealing portion...

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PUM

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Abstract

To provide a liquid crystal extracting apparatus by which heating of a waste liquid crystal panel can be easily performed, extracting temperature for heating under reduced pressure can be lowered to about evaporation temperature of a liquid crystal and the liquid crystal can be safely recovered in liquid crystal extraction by heating under reduced pressure, and to provide its method. The liquid crystal extracting apparatus for extracting the liquid crystal from the waste liquid crystal panel 10 by heating under reduced pressure is provided with a chamber 20 in which the waste liquid crystal panels 10 can be disposed and which has a means for heating its inner part, a pressure reducing means 24 making the inner part of the chamber 20 into a pressure reduced state and a heat conduction means 27 provided separately from an inner wall generating the extraction temperature for heating under reduced pressure in the chamber 20 and heating and embrittling a sealing material 7 or a capping material 7b of the waste liquid crystal panel 10.

Description

technical field [0001] The present invention relates to a liquid crystal extracting and processing device using reduced-pressure heating, its method, and a liquid crystal display device, and particularly relates to the use of liquid crystal panels discarded from liquid crystal panel manufacturing factories and discarded image display devices and information display devices on the market. A liquid crystal panel, a liquid crystal extracting treatment device and method for extracting liquid crystals by heating under reduced pressure. Background technique [0002] In recent years, the amount of general waste and industrial waste has been increasing, and in order to suppress the increase of these wastes and to suppress environmental degradation caused by the waste, there is an increasing demand for making the waste harmless. [0003] In response to these demands, efforts are being made to curb the amount of waste by promoting recycling of industrial waste discharged from factorie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00B01D5/00B01J3/00G02F1/13G02F1/1333
CPCB01B1/005B09B3/0058G02F1/13B09B3/0083B09B3/00B09B2101/02B09B3/40G02F1/1341
Inventor 矢岛广幸
Owner SEIKO EPSON CORP