Search

CN-121974571-A - Mobile phone camera cover plate and film coating method thereof

CN121974571ACN 121974571 ACN121974571 ACN 121974571ACN-121974571-A

Abstract

The invention discloses a mobile phone camera cover plate which comprises a glass substrate and a coating layer, wherein the coating layer is arranged on one surface of the glass substrate and comprises an anti-reflection layer, an anti-static layer and a wear-resistant protective layer. Compared with the prior art, the mobile phone camera cover plate and the film plating method thereof have the advantages of convenience in use, high wear resistance and reliable process.

Inventors

  • ZHANG ZIFENG
  • LI GEN
  • HUANG YUTING
  • LI KAILE

Assignees

  • 东莞市鸿瀚电子材料有限公司

Dates

Publication Date
20260505
Application Date
20251229

Claims (9)

  1. 1. The mobile phone camera cover plate is characterized by comprising a glass substrate and a coating layer, wherein the coating layer is arranged on one surface of the glass substrate; the coating layer comprises an anti-reflection layer, an antistatic layer and a wear-resistant protective layer.
  2. 2. The mobile phone camera cover plate of claim 1, wherein the anti-reflection layer is a multilayer dielectric film structure formed by alternately depositing silicon dioxide and titanium pentoxide, and the total number of layers is 3-6.
  3. 3. The mobile phone camera cover plate of claim 1, wherein the innermost layer and the outermost layer of the anti-reflection layer are both silicon dioxide layers; wherein the physical thickness of the individual silicon dioxide layer is 20-50nm; The physical thickness of the single layer of titanium pentoxide is 10-30nm.
  4. 4. The mobile phone camera cover plate of claim 1, wherein the antistatic layer is an indium tin oxide layer, a zinc aluminum oxide layer or an antimony doped tin dioxide layer; the thickness is 10-50 nm.
  5. 5. The mobile phone camera cover plate according to claim 1, wherein the wear-resistant protective layer is any one of a silicon dioxide film and a diamond-like carbon film; the thickness is 5-20nm.
  6. 6. The mobile phone camera cover plate of claim 1, wherein the cover plate substrate is made of chemically strengthened glass, sapphire or transparent glass ceramics.
  7. 7. The method for coating the mobile phone camera cover plate according to any one of claims 1 to 6, which is characterized by comprising the following steps: S1, cleaning a glass substrate by an ion source; S2, loading the cleaned cover plate substrate into a vacuum chamber of magnetron sputtering coating equipment, and vacuumizing; S3, introducing process gas to sequentially deposit an anti-reflection layer, an anti-static layer and a wear-resistant protective layer on the surface to be coated of the cover plate substrate; S4, naturally cooling to room temperature in an inert atmosphere after coating, and taking out the finished cover plate.
  8. 8. The method of claim 7, wherein the step S3 is performed by alternately sputtering a silicon dioxide target and a titanium pentoxide target, wherein the thickness of the single silicon dioxide layer is 20-50nm, the thickness of the single titanium pentoxide layer is 10-30nm, the total number of layers is 3-6, and the first layer and the last layer are silicon dioxide layers.
  9. 9. The method of claim 7, wherein the step S1 is performed by using an argon ion beam for ion source cleaning, the ion energy is 300-800eV, and the cleaning time is 60-180 seconds.

Description

Mobile phone camera cover plate and film coating method thereof Technical Field The invention relates to the technical field of optical functional films, in particular to a mobile phone camera cover plate and a film coating method thereof. Background Along with the continuous improvement of the camera shooting function of the smart phone, the requirement of users on imaging quality is increasingly improved. The surface performance of the camera cover plate, which is used as the last optical interface before light enters the lens, directly influences the image definition, the color reproducibility and the anti-interference capability. The traditional camera cover plate mostly adopts a single-layer or double-layer antireflection film, and can reduce the reflectivity to a certain extent, but the defects of limited antireflection effect, easiness in electrostatic adsorption, insufficient surface hardness and the like still exist when the traditional camera cover plate is used; Therefore, there is a need to develop a camera head cover structure with excellent optical performance and multiple functionalities to meet the dual requirements of the appearance and performance of the camera. Disclosure of Invention The invention aims to overcome the technical defects and provide the mobile phone camera cover plate which is convenient to use, high in wear resistance and reliable in process and the film coating method thereof. In order to solve the technical problems, the technical scheme provided by the invention is that the mobile phone camera cover plate comprises a glass substrate and a coating layer, wherein the coating layer is arranged on one surface of the glass substrate; the coating layer comprises an anti-reflection layer, an antistatic layer and a wear-resistant protective layer. Preferably, the anti-reflection layer is a multilayer dielectric film structure formed by alternately depositing silicon dioxide and titanium pentoxide, and the total layer number is 3-6. Preferably, the innermost layer and the outermost layer of the anti-reflection layer are both silicon dioxide layers; wherein the physical thickness of the individual silicon dioxide layer is 20-50nm; The physical thickness of the single layer of titanium pentoxide is 10-30nm. Preferably, the antistatic layer is an indium tin oxide layer, a zinc aluminum oxide layer or an antimony-doped tin dioxide layer; the thickness is 10-50 nm. Preferably, the wear-resistant protective layer is any one of a silicon dioxide film and a diamond-like carbon film; the thickness is 5-20nm. Preferably, the material of the cover plate substrate is chemically strengthened glass, sapphire or transparent glass ceramics. The invention also discloses a film coating method of the mobile phone camera cover plate, which comprises the following steps: S1, cleaning a glass substrate by an ion source; S2, loading the cleaned cover plate substrate into a vacuum chamber of magnetron sputtering coating equipment, and vacuumizing; S3, introducing process gas to sequentially deposit an anti-reflection layer, an anti-static layer and a wear-resistant protective layer on the surface to be coated of the cover plate substrate; S4, naturally cooling to room temperature in an inert atmosphere after coating, and taking out the finished cover plate. Preferably, in the step S3, an alternate sputtering silicon dioxide target and a titanium pentoxide target are adopted for depositing the anti-reflection layer, wherein the deposition thickness of a single silicon dioxide layer is 20-50nm, the deposition thickness of a single titanium pentoxide layer is 10-30nm, the total number of layers is 3-6, and the first layer and the last layer are both silicon dioxide layers. Preferably, the ion source cleaning in the step S1 adopts an argon ion beam, the ion energy is 300-800eV, and the cleaning time is 60-180 seconds. Compared with the prior art, the invention has the advantages that the invention realizes the cooperative improvement of optical performance, surface function and structural reliability by constructing the composite functional film system of the anti-reflection layer, the anti-static layer and the wear-resistant protective layer on the surface of the glass substrate and combining with the optimized magnetron sputtering continuous coating process, and solves the bottleneck problems of single function, performance compromise or complex process and the like in the prior art. Drawings FIG. 1 is a schematic flow chart of the coating method of the present invention. Detailed Description The present invention will be described in further detail with reference to the accompanying drawings. Referring to fig. 1, the mobile phone camera cover plate comprises a glass substrate and a coating layer, wherein the coating layer is arranged on one surface of the glass substrate and comprises an anti-reflection layer, an anti-static layer and a wear-resistant protective layer. When the anti-reflection coating