CN101431853A - Electrostatic protection method for LED display product - Google Patents

Abstract

The present invention relates to an electrostatic protection method, and the aim is to provide an electrostatic protection method of LED display products. Effective electrostatic protection can be realized in the process of tearing TATE of LED display products through in invention with good protection effect, simple and feasible method, and low cost. The electrostatic protection method of LED display products comprising the following steps: 1) Preparing electrolyte solution, wherein the content of electrolyte is from 0.01wtto 0.2wt, and the remaining is water; 2) tearing TAPE when LED display products immersed in electrolyte solution, then take it out; 3) taking LED display products with TAPE torn off back to clear water to bleach the salt, and then natural dry up by airing or drying.

Description

LED shows the product electrostatic protection method

Technical field

The present invention relates to a kind of electrostatic protection method, especially LED shows the electrostatic protection method of product.

Background technology

LED DISPLAY (is that LED shows product; As Water Heater Display, air-conditioning display, refrigerator display etc.) product, belong to light emitting semiconductor device, adopt the epoxy resin sealing adhesive process mostly; Since show product general all in the front of product with literal, symbol or the numeral of luminous LED display setting, therefore when infusion epoxy resin, general earlier at the front of product framework sealing TAPE (encapsulating tape), then epoxy resin is poured in the product framework from the back side, to be welded with the PCB of LED and other supporting electronic devices and components again packs in the product framework together, the baking of then heating, electronic devices and components are one with product framework full solidification just.

Product tears the operation of TAPE off in addition together after long roasting curing, heat ageing are finished.In tearing the process of TAPE off, can produce the high-pressure electrostatic lotus of several kilovolts and Electrostatic Discharge takes place, serious meeting punctures PN junction and causes short circuit; Slight meeting causes an infringement slightly, and product is after installing and using, and leakage current can enlarge, and finally causes the demonstration fault of product.Particularly LEDDISPLAY blue light, green glow, white light product adopt sapphire substrate bipolar electrode wafer mostly, and its PN junction structure determines the performance of anti-ESD and common wafer to differ bigger; If in tearing the TATE process, lack electrostatic defending, very likely cause device to lose Presentation Function wholly or in part; Thereby seek effective electrostatic protection method and seem particularly important.

Common anti-static method is to perfect systems for providing electrostatic discharge protection, as antistatic service area, workbench be set, the requirement operating personnel dress anti-static clothing, ESD-preventive wrist strap discharges the static electricity on human body lotus, utilize in the ion blower and the static that produces in the operation process, and product applies antistatic liquid etc.Adopt above anti-static method, the effect before DISPLAY blue light, green glow, white light product manufacture procedure of adhesive is better.And tearing TA PE operation, then effect is relatively poor to use traditional anti-static method, especially LED DISPLAY blue light, green glow, white light product be about this operation destruction by electrostatic field causes the bad ratio of electric leakage up to 5%, and account for all because of about 80% of the impaired ratio of static.Simultaneously, also can cause problems such as quality reduces, cost increases, goodwill is impaired.

Summary of the invention

Technical problem to be solved by this invention is to overcome the deficiency that exists in the above-mentioned background technology, provide a kind of LED to show the electrostatic protection method of product, this method should be able to show that product realizes effective electrostatic defending in tearing the TATE process to LED, and has the advantages that protection effect is good, method is simple, with low cost.

The present invention has adopted following technical scheme:

LED shows the product electrostatic protection method, may further comprise the steps:

1) preparation electrolyte, the shared part by weight of the electrolyte in the electrolyte is 0.01-0.2%, all the other are water;

2) LED shows that product is immersed under the state of electrolyte and tears TAPE off, takes out then;

3) LED that tears TAPE off is shown that product puts into clear water and float the part of desalting, dry naturally then or dry.

The shared part by weight of electrolyte in the electrolyte is 0.05%.

Described electrolyte is salt, acid or alkali.

Principle of the present invention is: electrolyte is ionic condition and distributes in electrolyte; LED shows when product tears TAPE in electrolyte, and the cation in the electrolyte, anion can neutralize static charges, eliminate static discharge effectively, guaranteed that LED shows the quality of product.

The invention has the beneficial effects as follows: after using this method, LED shows that product is significantly descended in the ratio of tearing TAPE operation destruction by electrostatic field; Especially LED DISPLAY blue light, green glow, white light product cause the bad ratio of electric leakage to drop to below 0.1% tearing TAPE operation destruction by electrostatic field, and product quality obtains effective guarantee.And the method for employing is simple, employing be the common, inexpensive material, so cost is also low.

Embodiment

Show product, especially LED DISPLAY blue light, green glow, white light product at the electrostatic defending that tears the TAPE operation in order to solve LED, through long-term groping and production practices, a kind of cheapness, effective anti-static method are found and are used.Specifically: LED shows the product electrostatic protection method, may further comprise the steps:

1) preparation electrolyte, the shared part by weight of the electrolyte in the electrolyte is 0.01-0.2%, all the other are water; Described electrolyte is can be salt, acid or alkali; Recommend to adopt salt, the part by weight of salt is recommended as 0.05%.

2) LED is shown that product is immersed in the electrolyte, and in electrolyte, tear TAPE off, take out then;

3) the LED demonstration product that tears TAPE off is put into clear water and float the part of desalting, dry naturally then; Perhaps product is put into baking box flash baking and removed moisture.

Claims (3)

1, LED shows the product electrostatic protection method, may further comprise the steps:

1) preparation electrolyte, the electrolyte proportion in the electrolyte is 0.01-0.2, all the other are water;

2) LED shows that product is immersed under the state of electrolyte and tears TAPE off, takes out then;

3) LED that tears TAPE off is shown that product puts into clear water and float the part of desalting, dry naturally then or dry.

2, LED according to claim 1 shows the product electrostatic protection method, it is characterized in that the shared part by weight of electrolyte in the electrolyte is 0.05%.

3, LED according to claim 1 and 2 shows the product electrostatic protection method, it is characterized in that described electrolyte is salt, acid or alkali.