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US 2019/0161404 A1Published application
Antireflective glass substrate and method for manufacturing the same
AssigneesAgc Glass Europe, Agc Glass Company North America, AGC Inc., Quertech Ingenierie
InventorsBenjamine NAVET, Pierre BOULANGER, Denis BUSARDO
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Abstract
A method for manufacturing antireflective glass substrates by ion implantation, comprising selecting a source gas of N2, or O2, ionizing the source gas so as to form a mixture of single charge and multicharge ions of N, or O, forming a beam of single charge and multicharge ions of N, or O by accelerating with an acceleration voltage A between 13 kV and 40 kV and setting the ion dosage at a value between 5.56×1014×A/kV+4.78×1016 ions/cm2 and −2.22×1016×A/kV+1.09×1018 ions/cm2, as well as antireflective glass substrates comprising an area treated by ion implantation with a mixture of simple charge and multicharge ions according to this method.
Claims17
1:
- A method for producing an antireflective glass substrate comprising:
- a) providing a source gas selected from O2 and/or N2,
- b) ionizing the source gas so as to form a mixture of single charge ions and multicharge ions of O and/or N,
- c) accelerating the mixture of single charge ions and multicharge ions of O and/or N with an acceleration voltage so as to form a beam of single charge ions and multicharge ions of O and/or N wherein an acceleration voltage A is between 13 kV and 40 kV and an ion dosage D is between 5.56×1014×A/kV+4.78×1016 ions/cm2 and −2.22×1016×A/kV+1.09×1018 ions/cm2,
- d) providing a glass substrate, and
- e) positioning the glass substrate in a trajectory of the beam of single charge and multicharge ions of O and/or N.
3 more elements
2:
- The method for producing an antireflective glass substrate according to claim 1, wherein the acceleration voltage is between 15 kV and 35 kV and the ion dosage D is between 7.50×1014×A/kV+4.88×1016 ions/cm2 and −2.05×1016×A/kV+8.08×1017 ions/cm2.
3:
- The method for producing an antireflective glass substrate according to claim 2, wherein the acceleration voltage is between 16 kV and 25 kV and the ion dosage is between 1.11×1015×A/kV+4.72×1016 ions/cm2 and 2.78×1016×A/kV+7.94×1017 ions/cm2.
4:
- The method for producing an antireflective glass substrate according to claim 1, wherein the glass substrate provided has the following composition ranges expressed as weight percentage of the total weight of the glass:
- SiO2
- 35-85%,
- Al2O3
- 0-30%,
- P2O5
- 0-20%,
- B2O3
- 0-20%,
- Na2O
- 0-25%,
- CaO
- 0-20%,
- MgO
- 0-20%,
- K2O
- 0-20%, and
- BaO
- 0-20%.
16 more elements
5:
- A method for producing a color antireflective glass substrate according to claim 4, wherein the glass substrate is selected from a soda-lime glass sheet, a borosilicate glass sheet or an aluminosilicate glass sheet.
6:
- A method for decreasing a reflectance of a glass substrate, comprising:
- implanting a mixture of single charge and multicharge ions of N and/or O in the glass substrate with an ion dosage and acceleration voltage effective to reduce the reflectance of the glass substrate.
7:
- The method for decreasing the reflectance of a glass substrate according to claim 6, wherein the implanting is effective to reduce the reflectance of the glass substrate to at most 6.5%.
8:
- The method for decreasing the reflectance of a glass substrate according to claim 7, wherein the implanting is effective to reduce the reflectance of the glass substrate to at most 6%.
9:
- The method for decreasing the reflectance of a glass substrate according to claim 8, wherein the implanting is effective to reduce the reflectance of the glass substrate to at most 5.5%.
10:
- The method for decreasing the reflectance of a glass substrate according to claim 6, wherein during the implanting the mixture of single charge and multicharge ions being implanted in the glass substrate has an acceleration voltage A between 13 kV and 40 kV and an ion dosage D between 5.56×1014×A/kV+4.78×1016 ions/cm2 and −2.22×1016×A/kV+1.09×1018 ions/cm2.
11:
- An antireflective glass substrate produced by a method according to claim 1.
12:
- A monolithic glazing, laminated glazing or multiple glazing with interposed gas layer, comprising an antireflective glass substrate according to claim 11.
13:
- The glazing of claim 12, further comprising sun-shielding, heat-absorbing, anti-ultraviolet, antistatic, low-emissive, heating, anti-soiling, security, burglar proof, sound proofing, fire protection, anti-mist, water-repellant, anti-bacterial or mirror means.
14:
- The glazing of claim 12, wherein said antireflective glass substrate is frosted, printed or screen process printed.
15:
- The glazing of claim 12, wherein said substrate is tinted, tempered, reinforced, bent, folded or ultraviolet filtering.
16:
- The glazing of claim 12, having a laminated structure comprising a polymer assembly sheet interposed between the antireflective glass substrate, with the ion implantation treated surface facing away from the polymer assembly sheet, and another glass substrate.
17:
- The glazing of claim 16, wherein said glazing is a car windshield.