Method for recovering glass substrates of liquid crystal display screen

A liquid crystal display and glass substrate technology, applied in the field of waste recycling, to save time and cost, easy to industrialize, and simple to handle

Inactive Publication Date: 2011-09-14
CHANGZHOU VOCATIONAL INST OF ENG
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0006] In order to overcome the above-mentioned defects, the technical problem to be solved in the present inve

Method used

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  • Method for recovering glass substrates of liquid crystal display screen
  • Method for recovering glass substrates of liquid crystal display screen
  • Method for recovering glass substrates of liquid crystal display screen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Detachment: detach the three glass substrates of the disassembled liquid crystal display panel;

[0022] Classification: Classify glass substrates into glass substrates containing resin black matrix film, glass substrates containing chrome black matrix film and glass substrates without matrix film;

[0023] Soak the detached glass substrate containing the resin black matrix film in a 10% sodium hydroxide solution for 28 minutes, stir while heating, and control the reaction temperature to 90°C. The changes in surface morphology were observed under an optical metallographic microscope. figure 1 .

[0024] Soak the detached glass substrate containing chromium black matrix film with 15% sodium hydroxide solution, remove the polymer film for 56 minutes, stir while heating, control the reaction temperature to 90 ° C, and then use 10% concentration Continue soaking in hydrofluoric acid solution, and react for 60 minutes at room temperature to remove the metal film on the sur...

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Abstract

The invention relates to a waste recovery technology, in particular to a method for recovering glass substrates of a liquid crystal display screen, which comprises the following steps of: A, detaching; B, classifying; C, recovering a glass substrate containing a resin black matrix membrane; D, recovering a glass substrate containing a chromium black matrix membrane; and E, recovering a matrix-free glass substrate. By the method, innocent treatment of the glass substrates is realized, secondary pollution is avoided, different treatment methods for different types of glass substrates are provided, and time and cost are saved; and by the technical route, the glass substrates can be effectively recovered and are easily treated, and the method is suitable for industrialization.

Description

technical field [0001] The invention relates to waste recycling technology, in particular to a method for recycling liquid crystal display glass substrates. Background technique [0002] Liquid Crystal Display (LCD for short) has the advantages of high definition, good image color, no electromagnetic radiation, power saving, light and thin and easy to carry, etc., and has been widely used in household appliances, computers and communication products. China is a big producer and consumer of electronic products. Generally speaking, the service life of LCDs is only 3 to 5 years. According to the output of LCD TVs and LCD computer monitors in my country in the past few years, more than 80 million LCDs will be scrapped in 2009. , with the increase in the number of scrapped LCDs and the rapid replacement of LCDs, my country will face a severe problem of recycling and processing waste LCDs. Waste LCDs contain toxic and harmful metals such as mercury, cadmium, chromium, nickel, lead...

Claims

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Application Information

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IPC IPC(8): B09B3/00B09B5/00
Inventor 孙媛媛唐惠东侯文顺李秀华
Owner CHANGZHOU VOCATIONAL INST OF ENG
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