Search

CN-122018213-A - Electronic paper and display device

CN122018213ACN 122018213 ACN122018213 ACN 122018213ACN-122018213-A

Abstract

The application relates to the field of display, and particularly discloses electronic paper and a display device, wherein the electronic paper comprises a substrate, an array control layer, a first electrode layer, a microcavity structure layer and a second electrode layer, wherein the array control layer, the first electrode layer, the microcavity structure layer and the second electrode layer are arranged on the substrate in a stacked mode, the microcavity structure layer comprises a plurality of accommodating cavities arranged at intervals, each accommodating cavity comprises two subchambers which are arranged side by side left and right, each subchamber is filled with a light-transmitting solution and at least two electrophoretic particles suspended in the light-transmitting solution, and the array control layer is used for independently driving the electrophoretic particles in each subchamber to move through the first electrode layer and the second electrode layer so that at least one subchamber reflects light. According to the application, through the mode, the diversity of the visual angle display of the electronic paper picture is improved.

Inventors

  • ZHANG HONGYIN
  • LI JIEWEI

Assignees

  • 惠科股份有限公司

Dates

Publication Date
20260512
Application Date
20260213

Claims (10)

  1. 1. The electronic paper is characterized by comprising a substrate, and an array control layer, a first electrode layer, a microcavity structure layer and a second electrode layer which are stacked on the substrate; The microcavity structure layer comprises a plurality of accommodating cavities which are arranged at intervals, each accommodating cavity comprises two subchambers which are arranged in parallel left and right, Each subchamber is filled with a light-transmitting solution and at least two kinds of electrophoretic particles suspended in the light-transmitting solution; the array control layer is used for independently driving the electrophoretic particles in each subchamber to move through the first electrode layer and the second electrode layer so as to enable at least one subchamber to reflect light and display.
  2. 2. The electronic paper of claim 1, wherein the array control layer comprises a plurality of array switches, each array switch corresponding to a position of each of the subchambers; The array switch comprises a first array switch and a second array switch, the subchamber comprises a first subchamber and a second subchamber, The first array switch applies an electric field to the first subchamber through the first electrode layer and the second electrode layer to drive electrophoretic particles in the first subchamber to move so as to enable the first subchamber to reflect light and display or not display; And the second array switch applies an electric field to the second subchamber through the first electrode layer and the second electrode layer to drive the electrophoretic particles in the second subchamber to move so as to enable the second subchamber to reflect light and display or not.
  3. 3. The electronic paper according to claim 2, wherein the electrophoretic particles comprise first electrophoretic particles and second electrophoretic particles, the first electrophoretic particles and the second electrophoretic particles being of opposite charged polarity, the first electrophoretic particles being reflective and the second electrophoretic particles being non-reflective; When the first subchamber reflects light and displays, the first array switch applies a first electric field through the first electrode layer and the second electrode layer so that the first electrophoresis particles move towards the light emitting surface of the first subchamber, and the second electrophoresis particles move towards the light emitting surface deviating from the first subchamber; when the first subchamber is not displayed, the first array switch applies a second electric field through the first electrode layer and the second electrode layer so that the first electrophoretic particles move towards the light-emitting surface away from the first subchamber, and the second electrophoretic particles move towards the light-emitting surface of the first subchamber; When the second subchamber reflects light and displays, the second array switch applies a first electric field through the first electrode layer and the second electrode layer so that the first electrophoresis particles move towards the light emitting surface of the second subchamber, and the second electrophoresis particles move towards the light emitting surface deviating from the first subchamber; When the second subchamber is not displayed, the second array switch applies a second electric field through the first electrode layer and the second electrode layer so that the first electrophoretic particles move towards the light emitting surface away from the second subchamber, and the second electrophoretic particles move towards the light emitting surface of the first subchamber.
  4. 4. The electronic paper according to claim 3, wherein the first electrophoretic particles comprise white electrophoretic particles or color electrophoretic particles, and the second electrophoretic particles comprise black electrophoretic particles.
  5. 5. The electronic paper according to claim 4, wherein the microcavity structure layer further comprises a first adhesive layer and a second adhesive layer, wherein the first adhesive layer and the second adhesive layer are made of light-transmitting materials, the first adhesive layer and the second adhesive layer are arranged at intervals from top to bottom, and a cavity is formed between the first adhesive layer and the second adhesive layer; a plurality of main separation structures are arranged in the cavity at intervals, the cavity is divided into a plurality of accommodating cavities by the main separation structures, a sub separation structure is arranged in each accommodating cavity, and the accommodating cavities are separated by the sub separation structures to form a left sub cavity and a right sub cavity.
  6. 6. The electronic paper according to claim 5, wherein the sub-partition structure includes a first partition portion and a second partition portion, the first partition portion is located above the second partition portion and connected to the second partition portion, a portion of the first partition portion is located in the accommodating cavity, another portion of the first partition portion extends to a top surface of the first electrode layer, a side wall of the second partition portion extends from the first partition portion to a bottom of the main partition portion, and a side wall of the second partition portion is arc-shaped.
  7. 7. The electronic paper according to claim 6, wherein outer surfaces of the first partition portion and the second partition portion are each provided with a reflective layer.
  8. 8. The electronic paper according to claim 7, wherein the first partition portion and the second partition portion each include a base layer and light shielding particles, and the light shielding particles are filled in the base layer.
  9. 9. The electronic paper according to claim 8, wherein the main partition structure is made of a black light shielding colloid material.
  10. 10. A display device comprising a housing, wherein the display device further comprises an electronic paper according to any one of claims 1 to 9, the electronic paper being connected to the housing.

Description

Electronic paper and display device Technical Field The application relates to the field of display, in particular to electronic paper and a display device. Background Electronic ink Electronic Paper (EPD) achieves display by controlling the movement of charged particles at the microscopic scale, known as "refreshable paper". The core principle is that transparent microcapsule is sandwiched between two electrode layers, and the capsule contains positively charged white particles and negatively charged black particles and is suspended in transparent liquid. When an electric field is applied to the electrode, particles migrate due to electrostatic action, namely positive white particles move to the negative electrode to display white, negative black particles move to the positive electrode to display black, and the particles still keep in position after power failure through a bistable effect (hysteresis effect), so that zero-power-consumption static display is realized. The reflective imaging mechanism similar to the printed matter ensures that the electronic paper has better visibility in sunlight than an LCD (no backlight reflection), and the stronger the ambient light is, the clearer the display is. However, the traditional electronic paper can only display full pictures at the front view angle, and the display picture view angle is single. Therefore, how to increase the diversity of the display viewing angle of the electronic paper screen is a problem to be solved in the art. Disclosure of Invention The application discloses electronic paper and a display device, and aims to improve the diversity of display visual angles of pictures of the electronic paper. The embodiment of the application discloses electronic paper, which comprises a substrate, an array control layer, a first electrode layer, a microcavity structure layer and a second electrode layer, wherein the array control layer, the first electrode layer, the microcavity structure layer and the second electrode layer are arranged on the substrate in a stacked mode, the microcavity structure layer comprises a plurality of accommodating cavities arranged at intervals, each accommodating cavity comprises two subchambers which are arranged side by side left and right, each subchamber is filled with a light-transmitting solution and at least two electrophoretic particles suspended in the light-transmitting solution, and the array control layer is used for independently driving the electrophoretic particles in each subchamber to move through the first electrode layer and the second electrode layer so that at least one subchamber reflects light. The array control layer comprises a plurality of array switches, each array switch corresponds to the position of each subchamber, each array switch comprises a first array switch and a second array switch, each subchamber comprises a first subchamber and a second subchamber, the first array switch applies an electric field to the first subchamber through the first electrode layer and the second electrode layer to drive electrophoretic particles in the first subchamber to move so as to enable the first subchamber to display or not to display in a reflecting mode, and the second array switch applies an electric field to the second subchamber through the first electrode layer and the second electrode layer to drive the electrophoretic particles in the second subchamber to move so as to enable the second subchamber to display or not to display in a reflecting mode. The first array switch applies a first electric field through the first electrode layer and the second electrode layer to enable the first electrophoretic particles to move towards the light-emitting surface of the first subchamber, the second electrophoretic particles to move towards the light-emitting surface of the second subchamber, the first array switch applies a second electric field through the first electrode layer and the second electrode layer to enable the second electrophoretic particles to move towards the light-emitting surface of the second subchamber, the first electrode layer and the second electrode layer apply a second electric field to enable the first electrophoretic particles to move towards the light-emitting surface of the first subchamber, the second electrode layer does not apply a first electric field to enable the first electrophoretic particles to move towards the light-emitting surface of the first subchamber, the second electrode layer does not apply a second electric field to enable the first electrophoretic particles to move towards the light-emitting surface of the first subchamber, and the second electrode layer do not apply a second electric field to enable the second electrophoretic particles to move towards the light-emitting surface of the second subchamber, and the second electrode layer does not move towards the light-emitting surface of the second subchamber. Optionally, the first electrophoretic particles compri