Company name or keyword

Two chemical hardening process and discussion - front glass materials part

How to fully utilize the chemical two strengthen, enhance the efficiency ofproducts have 4pb capability, this involves the incoming different process glass and two times of compulsory process factors. Because the two strong itself if theetching is too long, the product will have a ripple caused by outer appearance defects, if the etching is inadequate to remove or reduce the cracks, can not achieve the mechanical pressure increased, if the OGS product etching too longwill have the problem of falling edge of BM, so the control of etching degree twoof compulsory process is one of the most important issues.

The general process of glass materials need to confirm that: (1) property of glassmaterial itself (2) glass cutting and grinding process conditions (3) acidmembrane or process technique and precision ink coating.

(1) the strengthening characteristics of glass material itself: glass materials if thestrengthening process different or different components, the compressiveproperties of glass will be different, for example the general sodium calcium glass(Asahi Soda Lime Glass) 4pb value is lower than the Corning Gorilla glass, this is because the Corning Gorilla glass as the reinforced glass, by EDS analysis(Figure 10) have found that the potassium ion composition, while the Asahi SodaLime glass without potassium ion layer, the Gorilla glass the potassium ionstrengthening layer about 20~30 μ m, have good mechanical resistance to stress, in other words, if ion glass itself strengthened layer is thicker, it has the better the ability of anti 4pb

(2) the glass cutting and grinding process conditions: if the glass cutting andgrinding process is poor, can produce a lot of >100 μ m extension rift (crack), if we make use of crack extension in chemistry two intensive repair this range, it will have a clear glass edge waves for now, OGS products are non shielding module combination process, the water ripples in no way by the module box cover, there will be bad appearance problems. And the choice of cutting such as adjusting the cutting knife depth, cutting angle mode better, or is the use of laser cutting mode, cutting direction to find better is a must. In addition, the glass segment surface grinding and cutting (carving) is the two leading cause of high strengthen, choose a number plate for edge grinding, reduce the extension of the crack degree, will help repair effect of chemical two strong, but too high a number of carved process is time-consuming and high cost, also does not have the mass production

(3) acid membrane or process technique and coated precision acid ink: the current chemical two intensive industry are used to attach the film against the HF,in the OGS process (Figure 11) for the mother substrate (sheet) cut into finished products (chip), the acid membrane attached to the chip, then the chip device forglass section micro etching process, in Cassette into HF in the trough so,whether acid film paste precision and bubble cover there is related to the effect of HF time, if the acid film is attached to the poor precision will affect the appearance of OGS glass edge, serious erosion to BM edge, products for BMcolor process, reduce the production capacity. If the bubble may be eroded to the metal lines on the OGS (metal or ITO pattern), products can not be heavy toscrap processing, if the bubble in glass sections will cover strengthening effectcaused by the bump, bump will make the OGS product assembly problem. The recent development of acid fast ink process, low cost (acid film cost about 1/4),but there are still bottlenecks in technology, including the printing accuracy andantiacid ability needs to be promoted.