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CN-121978854-A - Peep-proof assembly, backlight module and display device

CN121978854ACN 121978854 ACN121978854 ACN 121978854ACN-121978854-A

Abstract

The invention discloses a peep-proof assembly, a backlight module and a display device. The peep-proof assembly comprises a first electrode layer, a second electrode layer provided with a plurality of driving electrodes, an insulating support piece, a dielectric layer, a first film layer and a driving device, wherein the first electrode layer and the second electrode layer are oppositely arranged, the second electrode layer comprises a plurality of driving electrodes, the insulating support piece is arranged between the first electrode layer and the second electrode layer and limits a first cavity and a second cavity which are communicated with each other, a hydrophilic shading fluid is arranged in the second cavity, the dielectric layer is arranged between the second electrode layer and the insulating support piece, the first film layer is arranged on one side of the dielectric layer facing the first cavity and is hydrophobic under the power-off state, and the driving device drives the shading fluid to flow between the first cavity and the second cavity. The invention realizes the multi-angle peep-proof effect.

Inventors

  • WU BIAO

Assignees

  • 长沙惠科光电有限公司

Dates

Publication Date
20260505
Application Date
20260226

Claims (10)

  1. 1. A privacy module, comprising: a first electrode layer; a second electrode layer, the first electrode layer and the second electrode layer being disposed opposite to each other, the second electrode layer including a plurality of driving electrodes; The insulating support is arranged between the first electrode layer and the second electrode layer, and the insulating support limits a first cavity and a second cavity which are communicated with each other in a space between the first electrode layer and the second electrode layer; A dielectric layer disposed between the second electrode layer and the insulating support; A first film layer arranged on one side of the dielectric layer facing the first cavity, having hydrophobicity in a power-off state and being capable of being converted into hydrophilicity under voltage control, and And the driving device drives the shading fluid to flow between the first cavity and the second cavity.
  2. 2. The privacy module of claim 1, wherein the first lumen communicates with the second lumen through a communication hole disposed adjacent to the dielectric layer.
  3. 3. The privacy module of claim 2, wherein a side of the second electrode layer facing away from the first electrode layer is a light entry side of the privacy module.
  4. 4. The privacy module of claim 1, wherein the interior wall of the second lumen is provided with a second membrane layer, the second membrane layer having a hydrophilic property; And/or the shading fluid is charged fluid, the dielectric layer is arranged between the second electrode layer and the insulating support piece, and the electrical property of the shading fluid is opposite to that of the second electrode layer.
  5. 5. The privacy module of any one of claims 1to 4, wherein the driving means is a piston assembly extending at least partially into the second cavity and slidably disposed within the second cavity.
  6. 6. The privacy assembly of claim 5, wherein the piston assembly comprises: A driving member; The piston main body is arranged in the second cavity in a sliding way and is in driving connection with the driving piece, the driving piece can drive the piston main body to move in the second cavity, and And one end of the elastic piece is connected with the piston main body, and the other end of the elastic piece is connected with the driving piece.
  7. 7. The privacy module of claim 6, wherein the driver comprises a permanent magnet and a coil, the coil is spirally wound on the permanent magnet, the piston body is a magnetic attraction member, and two ends of the elastic member are respectively connected with the permanent magnet and the magnetic attraction member.
  8. 8. The privacy assembly of claim 6, wherein the piston body comprises: a movable block connected with the elastic member, and The sealing ring is sleeved outside the movable block and abuts against the inner wall of the second cavity.
  9. 9. A backlight module, comprising: A back plate; The light source is arranged on the backboard; An optical film disposed on the light-emitting side of the light source, and A peep-proof assembly according to any one of claims 1 to 8, wherein the peep-proof assembly is disposed on a light-emitting side of the optical film.
  10. 10. A display device, comprising a display panel and the backlight module according to claim 9, wherein the display panel is disposed on a light emitting side of the peep-proof assembly.

Description

Peep-proof assembly, backlight module and display device Technical Field The invention relates to the technical field of display, in particular to a peep-proof assembly, a backlight module and a display device. Background With the development of technology, electronic devices with display screens are increasingly relied on to process transactions. In order to meet the requirement that the privacy of the information of people is not peeped by other people, a display device provided with a peep-proof device is generated. However, the conventional peep-proof device can only realize peep-proof at a directional angle, and cannot meet the peep-proof requirement of multi-angle adjustment. Disclosure of Invention The invention mainly aims to provide a peep-proof assembly, a backlight module and a display device, and aims to solve the problem that the traditional peep-proof device can only realize directional angle peep prevention. The peep-proof assembly comprises a first electrode layer, a second electrode layer, an insulating support piece, a dielectric layer, a first film layer and a driving device, wherein the first electrode layer and the second electrode layer are oppositely arranged, the second electrode layer comprises a plurality of driving electrodes, the insulating support piece is arranged between the first electrode layer and the second electrode layer, the insulating support piece limits a first cavity and a second cavity which are communicated with each other, shading fluid is arranged in the second cavity, the shading fluid has hydrophilicity, the dielectric layer is arranged between the second electrode layer and the insulating support piece, the first film layer is arranged on one side of the dielectric layer facing the first cavity, the first film layer has hydrophobicity under the power-off state and can be converted into hydrophilicity under the voltage control, and the driving device drives the shading fluid to flow between the first cavity and the second cavity. In an embodiment, the first cavity and the second cavity are communicated through a communication hole, and the communication hole is arranged close to the dielectric layer. In an embodiment, a side of the second electrode layer facing away from the first electrode layer is a light incident side of the peep-proof assembly. In one embodiment, a second film layer is arranged on the inner wall of the second cavity, and the second film layer has hydrophilicity; And/or the shading fluid is charged fluid, the dielectric layer is arranged between the second electrode layer and the insulating support piece, and the electrical property of the shading fluid is opposite to that of the second electrode layer. In an embodiment, the driving device is a piston assembly, and the piston assembly at least partially extends into the second cavity and is slidably disposed in the second cavity. In one embodiment, the piston assembly includes: A driving member; The piston main body is arranged in the second cavity in a sliding way and is in driving connection with the driving piece, the driving piece can drive the piston main body to move in the second cavity, and And one end of the elastic piece is connected with the piston main body, and the other end of the elastic piece is connected with the driving piece. In one embodiment, the driving piece comprises a permanent magnet and a coil, wherein the coil is spirally wound on the permanent magnet, the piston main body is a magnetic attraction piece, and two ends of the elastic piece are respectively connected with the permanent magnet and the magnetic attraction piece. In one embodiment, the piston body includes: a movable block connected with the elastic member, and The sealing ring is sleeved outside the movable block and abuts against the inner wall of the second cavity. The invention also provides a backlight module which comprises a back plate, a light source, an optical diaphragm and the peep-proof assembly, wherein the light source is arranged on the back plate, the optical diaphragm is arranged on the light emitting side of the light source, and the peep-proof assembly is arranged on the light emitting side of the optical diaphragm. The invention also provides a display device which comprises a display panel and the backlight module, wherein the display panel is arranged on the light emitting side of the peep-proof assembly. According to the technical scheme, the first electrode layer, the second electrode layer and the insulating support piece of the peep-proof assembly define the first cavity and the second cavity which are communicated with each other, the second cavity is internally provided with the shading fluid, and the driving device drives the shading fluid to flow between the first cavity and the second cavity, so that the peep-proof effect on different areas is achieved. In addition, by arranging the first electrode layer and the second electrode layer opposite to each other, the second el