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CN-122018052-A - Glass display screen structure with fine stripes and side wall peep-proof coating and preparation method thereof

CN122018052ACN 122018052 ACN122018052 ACN 122018052ACN-122018052-A

Abstract

The invention discloses a glass display screen structure with fine stripes and side wall peep-proof coating and a preparation method thereof, wherein the structure comprises a glass substrate, fine stripes integrally formed on the display surface of the glass substrate and the peep-proof coating selectively plated on the side wall of a concave part of the stripes; the fine stripes are composed of convex parts and concave parts which are alternately distributed, and the peep-proof coating is made of metal oxide with high refractive index. The preparation method comprises the steps of substrate pretreatment, photoetching-etching or compression molding of fine stripes, directional vacuum evaporation of side wall plating and post-treatment. The invention can reflect or absorb the light which deviates from the front view direction by more than 30 degrees through the side wall coating, limit the visual angle within +/-30 degrees, solve the problems of easy falling off and large display loss of the existing attached peep-proof film, and has the advantages of integrated integration, high light transmittance, precise peep-proof angle and good process compatibility, thereby being applicable to portable display equipment such as mobile phones, flat plates and the like.

Inventors

  • KE ZENGSONG
  • BI GUANGHUI

Assignees

  • 广东誉品实业有限公司

Dates

Publication Date
20260512
Application Date
20260317

Claims (10)

  1. 1. The preparation method of the glass display screen structure with the fine stripes and the side wall peep-proof coating is characterized by comprising the following steps: step S1, providing a glass substrate, and cleaning and preprocessing the surface of the glass substrate; step S2, integrally forming continuous fine stripes on the display surface of the glass substrate through a photoetching-etching process or a mould pressing process, wherein the fine stripes consist of convex parts and concave parts which are alternately distributed; step S3, selectively plating a peep-proof coating on the side wall area of the concave part through a directional vacuum evaporation process, wherein the peep-proof coating is made of high-refractive-index metal oxide; and S4, carrying out post-treatment on the plated glass substrate to obtain the upper glass of the screen with the integrated peep-proof structure.
  2. 2. The method according to claim 1, wherein the fine stripes have a stripe pitch of 20 to 100 μm, the recesses have a recess depth of 10 to 30 μm, and the sidewalls of the recesses are inclined at an angle of 30 ° to 60 °.
  3. 3. The method according to claim 1, wherein the photolithography-etching process in step S2 specifically comprises: Coating photoresist on the surface of the glass substrate, and forming a striped photoresist mask through mask exposure and development; wet etching is carried out on the glass substrate by adopting hydrofluoric acid-based etching liquid to form a concave part with a trapezoid cross section; and removing the photoresist mask after the etching is completed.
  4. 4. The method according to claim 1, wherein the directional vacuum evaporation process in step S3 specifically comprises: covering the upper surface of the protruding part and the bottom surface of the recessed part by adopting a shielding jig, and only exposing the side wall area of the recessed part; Placing the glass substrate in vacuum evaporation equipment, taking titanium oxide or indium tin oxide as an evaporation source, and plating a peep-proof coating with the thickness of 50-200nm on the side wall area.
  5. 5.A glass display screen structure with fine stripes and a side wall peep-proof coating, which is manufactured by the manufacturing method as claimed in any one of claims 1 to 4, comprising: A glass substrate as an upper protective substrate for a display screen; the fine stripe structure is integrally formed on the display surface of the glass substrate and consists of convex parts and concave parts which are alternately distributed; The peep-proof coating is selectively plated on the side wall area of the concave part through directional vacuum evaporation; The side wall inclination angle of the concave part is configured to enable light rays in the front view direction emitted by the display panel to directly pass through the fine stripes, so that the light rays deviating from the front view direction are incident on the surface of the peep-proof coating and reflected or absorbed.
  6. 6. The glass display screen structure of claim 5, wherein the glass substrate is aluminum-silicon steel glass having a thickness of 0.3-0.8mm.
  7. 7. The glass display screen structure of claim 5, wherein the fine stripes have a stripe pitch of 20-100 μm, the depressions have a depression depth of 10-30 μm, and the sidewalls are inclined at an angle of 30 ° -60 °.
  8. 8. The glass display screen structure according to claim 5, wherein the cross section of the concave portion is trapezoid, and the peep-proof coating only covers two waist side wall regions of the trapezoid, and does not cover the bottom surface of the concave portion and the upper surface of the convex portion.
  9. 9. The glass display screen structure according to claim 5, wherein the peep-proof coating is made of titanium oxide or indium tin oxide, the thickness of the coating is 50-200nm, and the refractive index is more than or equal to 2.0.
  10. 10. The structure of claim 5, wherein the optical properties of the privacy coating are configured to specularly reflect or absorb incident light rays that deviate from the normal to the display surface by more than 30 ° to limit the viewing angle of the screen to within +30°.

Description

Glass display screen structure with fine stripes and side wall peep-proof coating and preparation method thereof Technical Field The invention relates to the technical field of display screens, in particular to a glass display screen structure with fine stripes and a side wall peep-proof coating and a preparation method thereof. Background Currently, with the popularization of portable display devices such as smart phones and tablet computers, the privacy protection requirement of screen contents is increasing. In order to solve the problem that a lateral observer peeps at the screen, the main stream scheme in the market is an attached peep-proof film, and the visual angle is limited by arranging a micro-shutter structure on a film substrate. However, this solution has the following inherent drawbacks: The structure stability is poor, the film layer and the screen glass are attached in a separated mode, the film layer is easy to fall off and lift up due to daily friction and collision, the film layer is easy to wear and the peep prevention effect is attenuated after long-term use, the display performance is lost, the thickness (usually 0.10-0.3 mm) and the attaching gap of the attached film layer exist, the light transmittance of the screen is reduced by 5-12%, the color reduction degree and the brightness are affected, the process compatibility is low, the attached film is required to be matched with different screen sizes to be cut independently, and the adapting cost is high. Disclosure of Invention In order to overcome the defects of the prior art, the invention provides a glass display screen structure with fine stripes and a side wall peep-proof coating and a preparation method thereof, which can effectively solve the problems of the prior art. The technical scheme adopted for solving the technical problems is as follows: A preparation method of a glass display screen structure with fine stripes and a side wall peep-proof coating comprises the following steps: step S1, providing a glass substrate, and cleaning and preprocessing the surface of the glass substrate; step S2, integrally forming continuous fine stripes on the display surface of the glass substrate through a photoetching-etching process or a mould pressing process, wherein the fine stripes consist of convex parts and concave parts which are alternately distributed; step S3, selectively plating a peep-proof coating on the side wall area of the concave part through a directional vacuum evaporation process, wherein the peep-proof coating is made of high-refractive-index metal oxide; and S4, carrying out post-treatment on the plated glass substrate to obtain the upper glass of the screen with the integrated peep-proof structure. As a further description of the above technical solution, in step S2, the fine stripes have a stripe pitch of 20-100 μm, the recesses have a recess depth of 10-30 μm, and the sidewalls of the recesses have an inclination angle of 30 ° -60 °. As a further description of the above technical solution, the photolithography-etching process in step S2 specifically includes: Coating photoresist on the surface of the glass substrate, and forming a striped photoresist mask through mask exposure and development; wet etching is carried out on the glass substrate by adopting hydrofluoric acid-based etching liquid to form a concave part with a trapezoid cross section; and removing the photoresist mask after the etching is completed. As a further description of the above technical solution, the directional vacuum evaporation process in step S3 specifically includes: covering the upper surface of the protruding part and the bottom surface of the recessed part by adopting a shielding jig, and only exposing the side wall area of the recessed part; Placing the glass substrate in vacuum evaporation equipment, taking titanium oxide or indium tin oxide as an evaporation source, and plating a peep-proof coating with the thickness of 50-200nm on the side wall area. A glass display screen structure with fine stripes and a side wall peep-proof coating, comprising: A glass substrate as an upper protective substrate for a display screen; the fine stripe structure is integrally formed on the display surface of the glass substrate and consists of convex parts and concave parts which are alternately distributed; The peep-proof coating is selectively plated on the side wall area of the concave part through directional vacuum evaporation; The side wall inclination angle of the concave part is configured to enable light rays in the front view direction emitted by the display panel to directly pass through the fine stripes, so that the light rays deviating from the front view direction are incident on the surface of the peep-proof coating and reflected or absorbed. As a further description of the technical scheme, the glass substrate is aluminum silicon steel glass with the thickness of 0.3-0.8mm. As a further description of the above technical solution