WO2024114693A1 - 一种电润湿显示器件及其制备方法与应用 - Google Patents

一种电润湿显示器件及其制备方法与应用 Download PDF

Info

Publication number
WO2024114693A1
WO2024114693A1 PCT/CN2023/135161 CN2023135161W WO2024114693A1 WO 2024114693 A1 WO2024114693 A1 WO 2024114693A1 CN 2023135161 W CN2023135161 W CN 2023135161W WO 2024114693 A1 WO2024114693 A1 WO 2024114693A1
Authority
WO
WIPO (PCT)
Prior art keywords
substrate
display device
electrowetting display
hydrophilic
polar
Prior art date
Application number
PCT/CN2023/135161
Other languages
English (en)
French (fr)
Inventor
周国富
钱镕真
孙海玲
蒋洪伟
陈雯雯
郭媛媛
Original Assignee
华南师范大学
深圳市国华光电科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华南师范大学, 深圳市国华光电科技有限公司 filed Critical 华南师范大学
Priority to DE212023000055.5U priority Critical patent/DE212023000055U1/de
Publication of WO2024114693A1 publication Critical patent/WO2024114693A1/zh

Links

Definitions

  • the present invention belongs to the technical field of electrowetting display, and in particular relates to an electrowetting display device and a preparation method and application thereof.
  • the basic structure of the current traditional electrowetting display device is shown in Figure 1.
  • the basic structure is a sealed cavity formed by filling a specific solution in the upper and lower substrates.
  • the specific solution contains two immiscible polar electrolyte solutions 04 and non-polar liquids 05.
  • the upper substrate includes a support plate 01 and a first electrode 02
  • the lower substrate includes a support plate 09, a second electrode 08, a hydrophobic insulating layer 07 and a pixel wall 06.
  • the two substrates are connected by a specific solution and sealed by a sealant 03.
  • Each pixel grid in the pixel wall 06 is evenly filled with non-polar liquids 05.
  • the adjacent non-polar liquids 05 are separated by the pixel wall 06, and the mobile phase polar electrolyte solution 04 covers the pixel wall 06. Since the polar electrolyte solution 04 is connected to the first electrode 02, when a voltage is applied between the first electrode 02 and the second electrode 08, the wetting properties of the polar electrolyte solution 04 change from the original hydrophobic state to the hydrophilic state, so that the polar electrolyte solution 04 wets the surface of the hydrophobic insulating layer 07, and the non-polar liquid 05 in each pixel grid is squeezed to a corner.
  • the polar electrolyte solution 04 remains in a hydrophobic state, covering the pixel wall 06, and the non-polar liquid 05 is in a spreading state. That is, the display device is in an open state by applying pressure, and the display device is in a closed state when no pressure is applied. Since the polar electrolyte solution 04 and the non-polar liquid 05 in the traditional electrowetting display device are stacked up and down, when a voltage is applied, enough potential energy is required to cause the rupture of the non-polar liquid 05 film layer and then wet the surface of the hydrophobic insulating layer 07 by the polar electrolyte solution 04, so the opening voltage is relatively high.
  • the present invention aims to solve at least one of the technical problems existing in the above-mentioned prior art. To this end, the present invention provides an electrowetting display device having the characteristic of low opening voltage.
  • the invention also provides a method for preparing the electrowetting display device.
  • the present invention also proposes the application of the electrowetting display device.
  • an electrowetting display device comprising a first substrate, a second substrate and a plurality of display units arranged between the first substrate and the second substrate, wherein the display unit comprises a sealed cavity filled with a polar fluid and a non-polar fluid, and when no voltage is applied between the first substrate and the second substrate, the polar fluid and the non-polar fluid are The arrangement direction of the polar fluid forms an angle ⁇ with the arrangement directions of the first substrate and the second substrate, and ⁇ >0°.
  • the arrangement direction of the polar fluid and the non-polar fluid forms an angle greater than zero with the arrangement direction of the first substrate and the second substrate, and the polar fluid, the non-polar fluid and the surface of the first substrate or the second substrate form a three-phase contact line. Only very low potential energy is required on this contact line to achieve fluid movement or rewetting, thereby reducing the opening voltage of the electrowetting display device and having a lower opening voltage.
  • ⁇ 90°.
  • the polar fluid and the non-polar fluid are arranged left and right (horizontally arranged, perpendicular to the arrangement direction of the first substrate and the second substrate), and the opening voltage is significantly reduced.
  • the first substrate and the second substrate are parallel.
  • the polar fluid has a color.
  • the polar fluid in each display unit independently has different or the same color, including but not limited to yellow, red, blue, magenta (or fuchsia) or cyan, etc.
  • polar fluids are usually transparent, and non-polar fluids are black or colored non-polar solutions.
  • the colored solutes in the non-polar solution are mostly anthraquinone, azo or perylene small molecule compounds, and in order to meet the light absorption of the special band in the range of 400-800nm, metal ions are added for molecular design.
  • this type of molecule is very likely to cause the positive and negative charge centers to not coincide. From the perspective of the entire molecule, the charge distribution is uneven and asymmetric.
  • Such molecules are polar molecules, which are easily polarized under the action of the electric field, which has a certain interference with the display effect of the display device, making it impossible to achieve grayscale control of the display device.
  • the polar electrolyte solution 04 changes the wettability on the surface of the hydrophobic insulating layer 07 under the action of the electric field, thereby pushing the non-polar liquid 05 to the corner of the pixel grid.
  • the surface of the hydrophobic insulating layer 07 is re-wetted, so that when the electrowetting display device is in the on state, the non-polar liquid 05 cannot be stably maintained in a corner of the pixel grid, which interferes with the display effect to a certain extent, thereby failing to achieve grayscale control of the display device. In severe cases, the pixel aperture ratio and reflectivity of the device will be greatly affected.
  • the polar fluid has color and the non-polar fluid is transparent.
  • the present invention first improves the filling solution, changes the original colored non-polar liquid into a transparent non-polar fluid, and changes the original transparent polar electrolyte solution into a colored polar fluid.
  • the present invention avoids the problem that the polar molecules in the non-polar liquid of the conventional electrowetting device under pressure react with the upper
  • the rewetting phenomenon produced by the lower substrate improves the performance of the electrowetting display device, allowing the display device to maintain a stable grayscale state of the image during the driving process and maintain its grayscale controllability when in working state.
  • the display can be changed from white before pressurization to black after pressurization, which is more in line with the daily use habits of traditional paper. For example, when displaying text content, more than about 80% of the pixels of the electrowetting display device in the present invention are in the off state, which has certain energy saving properties.
  • Traditional electrowetting displays require pressurization to make the pixels of the non-text and graphic parts white, and turn off the voltage of the corresponding pixel grid to display the corresponding pattern. In comparison, traditional electrowetting display devices have large energy consumption.
  • the polar fluid is a polar electrolyte solution.
  • the polar electrolyte solution comprises a dye and a polar solvent.
  • the polar solvent includes water or an alcohol solvent; preferably, the dye includes a water-soluble dye.
  • the alcohol solvent includes ethylene glycol.
  • the non-polar fluid is a transparent fluid.
  • the non-polar fluid comprises an alkane substance.
  • the non-polar fluid is an alkane substance.
  • a water-soluble dye is added to the polar electrolyte solution, and the non-polar fluid remains a simple alkane solvent, thereby avoiding the re-wetting phenomenon between the polar molecules in the non-polar fluid and the second substrate (such as including an insulating hydrophobic layer) under pressurized conditions, thereby improving the performance of the electrowetting display device and enabling the display to maintain a stable state of the image grayscale during the driving process.
  • the colored polar electrolyte solution, transparent non-polar fluid and the surface of the hydrophobic insulating layer will form a three-phase contact line. On this contact line, only very low potential energy is needed to make the polar electrolyte solution wet the surface of the hydrophobic insulating layer, thereby reducing the opening voltage of the device.
  • the display changes from white before pressure to black after pressure, which is more in line with the daily use habits of traditional paper.
  • the display changes from white before pressure to black after pressure, which is more in line with the daily use habits of traditional paper.
  • more than 80% of the pixels of the electrowetting device in the present invention are in a closed state, which has certain energy saving properties.
  • Traditional electrowetting displays require pressure to make the pixels of the non-text and graphic parts white, and turn off the voltage of the corresponding pixels to display the corresponding pattern. In comparison, traditional electrowetting display devices have a large energy consumption.
  • the non-polar fluid comprises at least one of C6-C14 alkanes.
  • the non-polar fluid comprises at least one of octane, heptane, decane, undecane or dodecane.
  • the non-polar fluid is decane.
  • the first substrate includes a first base plate and a first electrode layer which are sequentially arranged.
  • the first electrode layer is located on a side of the first base plate close to the second substrate.
  • the first electrode layer is in contact with the non-polar fluid.
  • the first substrate includes a first base plate and a first electrode layer which are stacked in sequence.
  • the second substrate comprises a second base plate and a hydrophobic insulating layer which are arranged in sequence.
  • the hydrophobic insulating layer is located on a side of the second base plate close to the first substrate.
  • the hydrophobic insulating layer is in contact with the polar fluid.
  • a second electrode layer is provided between the second base plate and the hydrophobic insulating layer.
  • the second substrate includes a second base plate, a second electrode layer and a hydrophobic insulating layer which are stacked in sequence.
  • the display unit further includes a pixel wall assembly, and the sealed cavity includes a first sealed cavity and a second sealed cavity that are interconnected, the first sealed cavity is formed between components of the pixel wall assembly, and the second sealed cavity is formed between the pixel wall assembly and the first substrate and the second substrate.
  • the first sealed cavity is formed between the internal components in the pixel wall assembly.
  • a group of the pixel wall assembly includes a plurality of components, and the first sealed cavity is formed between the components of the group of the pixel wall assembly.
  • the second sealed cavity is formed between the pixel wall assembly and the first substrate and the second substrate.
  • the first sealed cavity is filled with a polar fluid
  • the second sealed cavity is filled with a non-polar fluid
  • the pixel wall assembly includes a first hydrophilic component and a second hydrophilic component spaced apart between the first substrate and the second substrate, a set distance is provided between the first hydrophilic component and the second substrate, and the hydrophilicity of the second hydrophilic component is greater than that of the first hydrophilic component.
  • the set distance between the first hydrophilic member and the second substrate means that the first hydrophilic member and the second substrate are not in contact, and there is a certain distance between the two.
  • the distance can be set according to actual conditions and a suitable distance size can be selected.
  • the first hydrophilic member and the second hydrophilic member are both insulating hydrophilic members.
  • a group of the pixel wall components includes a first hydrophilic member and a second hydrophilic member adjacent to each other.
  • the first sealed cavity is formed between adjacent first hydrophilic components and second hydrophilic components.
  • first hydrophilic member and the second hydrophilic member are arranged in an interval manner, specifically, the first substrate, the adjacent first hydrophilic member and the second hydrophilic member, and the second substrate form the first sealed cavity.
  • the first hydrophilic component is connected to the first substrate; or, there is a set distance between the first hydrophilic component and the first substrate.
  • the set distance between the first hydrophilic component and the first substrate means that the first hydrophilic component and the first substrate are not in contact with each other, and there is a certain distance between them.
  • the distance can be set according to actual conditions and a suitable distance can be selected.
  • the second hydrophilic member is connected to the second substrate.
  • the second hydrophilic component is connected to the first substrate; or, there is a set distance between the second hydrophilic component and the first substrate.
  • the set distance between the second hydrophilic component and the first substrate means that the second hydrophilic component and the first substrate are not in contact with each other, and there is a certain distance between them.
  • the distance can be set according to actual conditions and a suitable distance can be selected.
  • two ends of the second hydrophilic member are connected to the first substrate and the second substrate respectively.
  • the first hydrophilic member includes a first pixel wall.
  • the second hydrophilic member includes a second pixel wall.
  • a conductive member is provided in the first sealed cavity, and the conductive member is electrically connected to the first substrate.
  • the conductive member is connected to the first electrode layer.
  • the conductive member is a conductive column.
  • the conductive column is a conductive glue layer column.
  • the conductive member is located between the adjacent first hydrophilic member and the second hydrophilic member.
  • the set distance between the conductive member and the second substrate means that the conductive member and the second substrate are not in contact with each other, and there is a certain distance between the two.
  • the distance can be set according to actual conditions and a suitable distance can be selected.
  • each of the display units includes two groups of symmetrically arranged pixel wall components.
  • each display unit includes two groups of pixel wall components symmetrically arranged, which means that each display unit includes two first hydrophilic parts (first hydrophilic part I and first hydrophilic part II), two second hydrophilic parts (second hydrophilic part I and second hydrophilic part II), two conductive pillars (conductive pillar I and conductive pillar II), two first sealed cavities (first sealed cavity I and first sealed cavity II) and one second sealed cavity, and in each display unit: between the first substrate and the second substrate, from one end of the first substrate to the other end thereof, the second hydrophilic part I, the conductive pillar I, the first hydrophilic part I, the first hydrophilic part II, the conductive pillar II, and the second hydrophilic part II are sequentially arranged at intervals, and the sealed cavity of the display unit includes the first sealed cavity I, the second sealed cavity and the first sealed cavity II which are connected in sequence, wherein the first sealed cavity I is formed between the second hydrophilic part I, the first hydrophilic part I, the first substrate and
  • the electrowetting display device further comprises a plurality of partitions spaced between the first substrate and the second substrate, the first substrate and the second substrate facing each other are respectively connected to the partitions, and the partitions are arranged vertically to the pixel wall assembly.
  • the partitions are vertically connected to the second hydrophilic member.
  • the partitions are connected to both the first electrode layer of the first substrate and the hydrophobic insulating layer of the second substrate.
  • the first substrate, two adjacent partitions, the second substrate and two second hydrophilic parts located at the edge of a display unit together form the display unit;
  • the edge part of the electrowetting display device the first substrate, two adjacent partitions (or one partition), the second substrate and one to two second hydrophilic parts located at the edge of a display unit together form the display unit, or/and, the first substrate, one partition, the second substrate and two second hydrophilic parts (or one second hydrophilic part) located at the edge of a display unit together form the display unit.
  • the first hydrophilic member is connected to the side surfaces of two adjacent partitions
  • the second hydrophilic member is connected to the side surfaces of two adjacent partitions
  • the electrowetting display device further comprises a sealing frame, and the first substrate and the second substrate are connected around the sealing frame.
  • the edge portion of the electrowetting display device the first substrate, the partition, the second hydrophilic member, the second substrate and the sealing frame together form the display unit.
  • the first substrate and the second substrate are bonded together by a sealant, and the sealant forms a sealant frame.
  • a second aspect of the present invention further provides a method for preparing an electrowetting display device, comprising the following steps: assembling a first substrate and a second substrate to obtain the electrowetting display device.
  • the preparation method comprises the following steps:
  • step S3 taking the first substrate obtained in step S1 and the second substrate obtained in step S2, assembling them to obtain the electrowetting display device.
  • step S2 includes preparing a second substrate with a pixel wall assembly, wherein the second substrate with the pixel wall assembly is prepared by using a sacrificial layer.
  • the second substrate includes a second base plate, a second base plate, and a second base plate. Two electrode layers and a hydrophobic insulating layer.
  • the pixel wall assembly includes a first hydrophilic member and a second hydrophilic member.
  • step S2 preparing a second substrate with the pixel wall assembly includes the following operations:
  • step S2-3 preparing a sacrificial layer on the hydrophilic-modified hydrophobic insulating layer obtained in step S2-2, and then spin-coating photoresist II on the sacrificial layer to obtain a hydrophilic-modified hydrophobic insulating layer with a first hydrophilic component;
  • step S2-4 modifying the hydrophilic-modified hydrophobic insulating layer obtained in step S2-3 by heating to obtain a hydrophobic insulating layer having a first hydrophilic component and a second hydrophilic component.
  • step S2-1 the hydrophobic insulating layer is modified to make the layer more hydrophilic, which is convenient for the subsequent production of pixel wall components (such as the first hydrophilic component and the second hydrophilic component).
  • the photoresist I includes Surflon material and/or Novec material.
  • step S2-3 photoresist II is spin-coated on the sacrificial layer, and the sacrificial layer is removed to obtain a hydrophilic-modified hydrophobic insulating layer with a first hydrophilic component.
  • the heating temperature is higher than the glass transition temperature of the hydrophobic insulating layer.
  • a second substrate is first prepared, and then a pixel wall assembly is prepared on the second substrate, wherein the method for preparing the second substrate comprises the following operations: taking a second base plate, coating a raw material liquid of a hydrophobic insulating layer, and curing to obtain a second substrate.
  • the coating method is spin coating, and the raw material liquid comprises a fluorine-containing coating or a Hyflon material.
  • a conductive member is prepared on the first substrate to obtain the first substrate connected with the conductive member.
  • preparing the conductive member specifically comprises the following steps: spin coating a conductive photoresist on the first substrate, pre-baking, photolithography, post-baking, and developing to obtain the conductive member.
  • the first substrate is electrically connected to the conductive member.
  • step S1 preparing a conductive element on the first substrate specifically includes the following steps:
  • pre-baking heating and pre-baking the intermediate part I to obtain the intermediate part II;
  • the conductive photoresist is a negative conductive photoresist.
  • the spin coating thickness is 30-2000 nm.
  • the spin coating speed is 500-2000 r/min.
  • the pre-baking temperature is 100-120° C.
  • the pre-baking time is 2-4 min.
  • step S1-3 the light intensity of the exposure is 15.0-22.0 mW/cm 2 , and the photolithography time is 15-20 s.
  • the post-baking temperature is 100-120° C.
  • the post-baking time is 2-4 min.
  • the development treatment includes immersing the intermediate member IV in 0.4% KOH for 1 min, shaking it for 1 min, rinsing it with 0.4% KOH for 10 s, shaking it for 20 s, and rinsing it with water for 1 min.
  • the second substrate with the pixel wall assembly obtained in step S2 includes a first sealed cavity precursor and a second sealed cavity precursor, and the first sealed cavity precursor and the second sealed cavity precursor are filled with a polar fluid and a non-polar fluid, respectively, and assembled with the first substrate obtained in step S1 and sealed with a sealant to obtain a first sealed cavity and a second sealed cavity, thereby obtaining the electrowetting display device.
  • the third aspect of the present invention proposes the application of the above electrowetting display device in the field of electrowetting display, LED or LCD display technology.
  • FIG1 is a schematic diagram of the structure of a conventional electrowetting display device
  • FIG2 is a schematic cross-sectional view of the electrowetting display device according to Example 1 of the present invention.
  • FIG. 3 is a schematic cross-sectional structure diagram of a display unit of an electrowetting display device according to Embodiment 1 of the present invention.
  • FIG4 is a schematic top view of the electrowetting display device in the unpowered state according to Example 1 of the present invention.
  • FIG5 is a schematic diagram showing a comparison of changes in a single pixel of the electrowetting display device before and after voltage application according to Example 1 of the present invention
  • FIG6 is a schematic top view showing the comparison of the changes of the electrowetting display device before and after pressurization according to Example 1 of the present invention.
  • Example 7 is a schematic cross-sectional structure diagram of a first substrate with conductive pillars in an electrowetting display device according to Example 1 of the present invention.
  • FIG8 is a schematic diagram of the preparation process of a pixel wall assembly in an electrowetting display device according to Example 1 of the present invention.
  • FIG. 9 is a schematic cross-sectional structure diagram of a second substrate with a pixel wall assembly in the electrowetting display device according to Example 1 of the present invention.
  • FIG10 is a schematic diagram of a cross-sectional structure of a single display unit in the electrowetting display device according to Example 1 of the present invention.
  • FIG11 is a second schematic cross-sectional structure diagram of a single display unit in the electrowetting display device according to Example 1 of the present invention.
  • FIG12 is a third schematic diagram of the cross-sectional structure of a single display unit in the electrowetting display device according to Example 1 of the present invention.
  • FIG. 13 is a schematic diagram of the cross-sectional structure of the electrowetting display device according to Example 2 of the present invention.
  • Figure numerals 1. first base plate; 2. first electrode layer; 3. sealing rubber frame; 4. polar electrolyte solution; 5. non-polar liquid; 7. hydrophobic insulating layer; 8. second electrode layer; 9. second base plate; 10. first hydrophilic part; 11. conductive rubber layer column; 12. second hydrophilic part; 13. three-phase contact line; 14. partition; 16. sacrificial layer.
  • orientations such as up, down, front, back, left, right, etc.
  • orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
  • the electrowetting display device includes a first substrate, a second substrate, and a plurality of display units disposed between the first substrate and the second substrate.
  • the first substrate is parallel to the second substrate, and the first substrate includes a first base plate 1 and a first electrode layer 2 which are stacked in sequence, and the first electrode layer 2 is located on the side of the first base plate 1 close to the second substrate.
  • a conductive column 11 is provided in the first sealed cavity, which is a conductive glue layer column, and the conductive column is connected to the first electrode layer 2.
  • the second substrate includes a second base plate 9, a second electrode layer 8 and a hydrophobic insulating layer 7 which are stacked in sequence. The hydrophobic insulating layer 7 is located on the side of the second base plate 9 close to the first substrate.
  • the display unit includes a sealed cavity and a pixel wall assembly, the sealed cavity includes a first sealed cavity and a second sealed cavity that are interconnected, a second sealed cavity is formed between the pixel wall assembly and the first substrate and the second substrate, the pixel wall assembly includes a first hydrophilic member 10 (first pixel wall) and a second hydrophilic member 12 (second pixel wall) that are spaced between the first substrate and the second substrate, a set distance (the set distance may be 20-100 ⁇ m) between the first hydrophilic member 10 and the second substrate, and the hydrophilicity of the second hydrophilic member 12 is greater than that of the first hydrophilic member 10.
  • a first sealed cavity is formed between the first hydrophilic member 10 and the second hydrophilic member 12.
  • the display unit includes two groups of pixel wall assemblies that are symmetrically arranged, and a cross-sectional schematic diagram thereof is shown in FIG3 .
  • the second hydrophilic component 12 In each display unit, between the first substrate and the second substrate, along the direction from one end to the other end of the first substrate, the second hydrophilic component 12, the conductive column, the first hydrophilic component 10, the first hydrophilic component 10, the conductive column, and the second hydrophilic component 12 are sequentially arranged in intervals (the hydrophilic components and the conductive columns are arranged transversely in the aforementioned order), and the sealed cavity of the display unit includes the first sealed cavity I, the second sealed cavity and the first sealed cavity II which are connected in sequence.
  • the first second hydrophilic component, the first first hydrophilic component and the first substrate and the second substrate form the first sealed cavity I;
  • the first first hydrophilic component, the second first hydrophilic component and the first substrate and the second substrate form the second sealed cavity;
  • the second first hydrophilic component, the second second hydrophilic component and the first substrate and the second substrate form the first sealed cavity II.
  • the first sealed cavity is filled with a polar fluid
  • the second sealed cavity is filled with a non-polar fluid.
  • the polar fluid is a polar electrolyte solution 4 with color.
  • the polar electrolyte solution 4 in each display unit independently has different or the same colors, including but not limited to yellow, red, blue, magenta (or fuchsia), cyan or black, etc.
  • the polar electrolyte solution 4 includes a water-soluble dye and a polar solvent (such as water or an alcohol solvent, wherein the alcohol solvent is such as ethylene glycol, etc.).
  • the non-polar fluid is a transparent non-polar liquid 5, which is decane (any alkane from C6 to C14).
  • the soluble dye can be a dye that is soluble in water but insoluble in the non-polar fluid, such as yellow, magenta, blue or black, etc.
  • the water-soluble dye used in the body can be obtained from commercial channels such as conventional markets, and can be selected from, but not limited to: acid yellow, Aladdin, A330858; acid fuchsin, Aladdin, A104916; acid black 24, Aladdin, A355221.
  • the mass percentage of the water-soluble dye can be 5-10%.
  • the electrowetting display device further includes a plurality of partitions 14 spaced apart between the first substrate and the second substrate, the first substrate and the second substrate facing each other are respectively connected to the partitions 14, and the partitions are vertically arranged with the pixel wall assembly.
  • the partitions 14 are vertically connected with the second hydrophilic member 12, the partitions 14 are connected with the first electrode layer 2 of the first substrate, and the partitions 14 are connected with the hydrophobic insulating layer 7 of the second substrate.
  • the first substrate, two adjacent partitions 14, the second substrate and two second hydrophilic parts 12 located at the edge of a display unit together form the display unit;
  • the edge part of the electrowetting display device the first substrate, two adjacent partitions 14 (or one partition 14), the second substrate and one (or two) second hydrophilic parts 12 located at the edge of a display unit together form the display unit, or/and, the first substrate, one partition 14, the second substrate and two second hydrophilic parts 12 (or one second hydrophilic part 12) located at the edge of a display unit together form the display unit.
  • the first hydrophilic member 10 is not connected to the first electrode layer 2 and the hydrophobic insulating layer 7, and is connected to the sides of the two adjacent partitions 14.
  • the first hydrophilic member 10 is a first pixel wall (a hydrophilic material).
  • the bottom of the second hydrophilic member 12 is connected to the hydrophobic insulating layer 7, and the top is in contact with the polar electrolyte solution 4.
  • the second hydrophilic member 12 is connected to the sides of the two adjacent partitions 14, and the second hydrophilic member 12 is a second pixel wall (a strongly hydrophilic material).
  • the electrowetting display device further comprises a sealing frame 3, the first substrate and the second substrate are connected around the sealing frame 3, the first substrate and the second substrate are bonded by a sealant, and the sealant forms the sealing frame 3.
  • the edge portion of the electrowetting display device: the first substrate, the partition 14, the second hydrophilic member 12, the second substrate and the sealing frame together form the display unit.
  • FIG. 4 is a top view of the electrowetting display device in an unpowered state, where each small grid represents a pixel grid (i.e., a display unit).
  • each pixel grid the left and right sides are filled with a colored polar electrolyte solution 4, and the middle is filled with a transparent non-polar liquid 5.
  • the pixel wall contains two materials: a strongly hydrophilic material and a hydrophilic material, which are the second hydrophilic component 12 and the first hydrophilic component 10, respectively.
  • the overall surface of the grid is made of hydrophilic material, the second hydrophilic part 12 is made of strong hydrophilic material, and the first hydrophilic part 10 is made of hydrophilic material.
  • the second hydrophilic part 12 mainly uses strong hydrophilic negative photoresist HN-018N.
  • This type of material can increase the hydrophilicity to a certain extent due to the fluorine-loving and hydrophilic groups contained therein, so that its contact angle is between 50 degrees and 65 degrees, while the hydrophilic photoresist HN-0081N negative photoresist is used in the first hydrophilic part 10, and the contact angle is between 70 degrees and 108 degrees.
  • HN-018N and HN-0081N photoresists are purchased from Weifang Xingtai Microelectronic Materials Co., Ltd.
  • the transparent non-polar liquid 5 is more inclined to stay in the cavity surrounded by the first hydrophilic part 10 (the second sealed cavity) due to the oleophilic and hydrophobic properties of the surface of the hydrophobic insulating layer 7, and the colored polar electrolyte liquid 4 is more inclined to stay in the two side walls (the first sealed cavity) due to the strong hydrophilicity of the second hydrophilic part 12 and the capillary force formed by the second hydrophilic part 12 and the first hydrophilic part 10.
  • the colored polar electrolyte solution 4 wets the surface of the hydrophobic insulating layer 7 under the action of the electric field and replaces the non-polar liquid 5 in the surface area of the hydrophobic insulating layer 7 to display the open state, as shown in Figures 5 and 6.
  • the colored polar electrolyte solution 4' is a single pixel grid state diagram when the first electrode layer 2 and the second electrode layer 8 are not pressurized
  • the right figure is a single pixel grid state diagram when the first electrode layer 2 and the second electrode layer 8 are pressurized.
  • the left figure is a schematic top view of the electrowetting display device when the first electrode layer 2 and the second electrode layer 8 are not pressurized
  • the right figure is a schematic top view of the electrowetting display device when the first electrode layer 2 and the second electrode layer 8 are pressurized.
  • the contact angle of the droplet on the surface of the hydrophobic insulating layer 7 will continue to decrease with the continuous increase of the voltage, and the contact angle will be reduced from the initial hydrophobic state to the hydrophilic state.
  • the droplet Before the voltage is applied, the droplet is usually in a state of equilibrium of the static contact angle. After the voltage is applied, under the action of the electrowetting force, the spreading of the entire droplet is dominated by the advancing angle until the advancing angle at the mechanical equilibrium near the three-phase contact line 13 in the powered state is reached.
  • the conductive glue layer column 11 can expand the contact area with the polar electrolyte solution 4 to a certain extent, speed up the reaction speed, and reduce the hysteresis effect of the electrowetting effect.
  • the establishment of the conductive glue layer column 11 can increase the range of the contact angle regulated by electrowetting, and ensure the reversibility of electrowetting to a certain extent.
  • a water-soluble dye is added to the polar electrolyte solution 4, and decane is selected from the non-polar liquid 5, so as to avoid the re-wetting phenomenon caused by the polar molecules in the non-polar liquid and the insulating hydrophobic layer under the pressurized state, thereby improving the performance of the electrowetting display device, and enabling the display to maintain the stable state of the image grayscale during the driving process.
  • the polar electrolyte solution 4 and the non-polar liquid 5 are arranged left and right, and a three-phase contact line 13 is formed on the surface of the polar electrolyte solution 4, the non-polar liquid 5 and the hydrophobic insulating layer 7.
  • the performance of the electrowetting display device in the present invention is improved, so that the display can maintain the stable state of the image grayscale during the driving process, so that the opening voltage of the electrowetting display device is reduced while maintaining its grayscale controllability when it is in the working state.
  • the preparation of the colored polar electrolyte solution 4 and the transparent non-polar liquid 5 is mainly carried out in the early stage of manufacturing the device.
  • a colored solute is added to the polar electrolyte solution 4 so that the polar electrolyte solution 4 has a specific color, and no colored substance is added to the non-polar liquid 5 to keep it transparent.
  • the implementation of this step makes the display mode of the electrowetting display device in this embodiment opposite to that of the traditional electrowetting display device at the time of opening and closing. In this embodiment, when the screen is white, the display device is in the closed state, and when the screen is in color, the display device is in the open state.
  • the preparation process of the electrowetting display device in this embodiment includes the following steps:
  • the steps for preparing the first substrate are the same as those of the conventional electrowetting display device: a conductive layer (used as the first electrode layer 2) is provided on the glass substrate. On this basis, the conductive glue layer column 11 is prepared by spin coating conductive photoresist and photolithography process. The preparation of the first substrate containing the conductive glue layer column specifically includes the following operations:
  • Pre-baking After spin coating, pre-bake on a hot plate for a certain period of time. Set the hot plate temperature to 110°C and the time to 2 min 30 s.
  • step (3) The first substrate obtained in step (3) is placed in a photolithography machine for exposure processing, the light intensity is set to 16 mW/cm 2 , and the photolithography time is 16 s;
  • Post-baking is used to eliminate certain standing wave effects.
  • the hot plate temperature is set to 110°C and left for 2 min 30 s.
  • step (6) Development: The first substrate obtained in step (5) is placed in a developer for development treatment, and developed using a 0.4% KOH solution. The substrate is immersed in 0.4% KOH for 1 minute and then shaken for 1 minute. The substrate is then rinsed with 0.4% KOH for 10 seconds, shaken for 20 seconds, and then rinsed with pure water for 1 minute. The preparation of the conductive column 11 structure is completed.
  • FIG7 The structural schematic diagram of the finally manufactured first substrate with conductive pillars is shown in FIG7 .
  • the steps of preparing the second substrate with the pixel wall assembly specifically include the following operations:
  • step (3) The second substrate obtained in step (2) is placed in a reactive ion etcher for modification, with the equipment power set to 6 W and the time set to 5 s. This step is used to improve the wettability of the surface, which is beneficial to the subsequent uniform film formation of the photoresist.
  • the pixel wall is prepared on the modified hydrophobic insulating layer 7, and the second hydrophilic member 12, the first hydrophilic member 10 and the partition 14 are mainly prepared by using a sacrificial layer or the like.
  • the cross-sectional schematic diagram of the pixel wall preparation process is shown in FIG8 (without showing the partition 14), which specifically includes:
  • High temperature treatment The second substrate on which the pixel walls are prepared is subjected to high temperature treatment, and the temperature needs to exceed the Tg temperature of the hydrophobic insulating layer 7 to restore its initial hydrophobic properties.
  • FIG8 The cross-sectional schematic diagram of the finally obtained second substrate with the pixel wall assembly is shown in FIG8 .
  • the colored polar electrolyte solution 4 and the transparent non-polar liquid 5 are respectively filled into the cavities formed by the pixel wall: the first sealed cavity and the second sealed cavity by inkjet printing, and the first substrate with the sealant 3 and the first electrode layer 2 is aligned and pressed with the second substrate to complete the preparation process of the electrowetting device.
  • the schematic diagram of the final product is shown in Figure 9.
  • Figure 10 is a cross-sectional view of the area where a single pixel grid is located, from which the pixel wall and the distribution structure of the mixed solution filled in the pixel wall can be clearly seen.
  • the transparent non-polar liquid 5 is mainly gathered in the cavity formed by the first hydrophilic member (hydrophilic material) 10 (the second sealed cavity), and the colored polar electrolyte solution 4 is mainly gathered in the wall formed by the second hydrophilic member (strongly hydrophilic material) 12 and the first hydrophilic member (hydrophilic material) 10 (the first sealed cavity).
  • This embodiment discloses an electrowetting display device, which is different from Example 1 in that a cross-sectional schematic diagram of the electrowetting display device is shown in FIG13 : the top of the second hydrophilic component 12 is connected to the first electrode layer 2 ; the top of the first hydrophilic component 10 is connected to the first electrode layer 2 .
  • Embodiment 1 discloses an electrowetting display device, which differs from Embodiment 1 in that: in this embodiment, there is a set distance between the top of the second hydrophilic component 12 and the first electrode layer 2 (the set distance may be 20-100 ⁇ m); the top of the first hydrophilic component 10 is connected to the first electrode layer 2.
  • This embodiment discloses an electrowetting display device, which differs from Embodiment 1 in that: in this embodiment, the top of the second hydrophilic component 12 is connected to the first electrode layer 2; there is a set distance between the top of the first hydrophilic component 10 and the first electrode layer 2 (the set distance may be 20-100 ⁇ m).
  • the display in order to improve the performance of the electrowetting display device, the display can maintain a stable state of image grayscale during the driving process.
  • the two-phase fluid is improved for the polarization effect, a water-soluble dye is added to the polar electrolyte solution 4, and the non-polar liquid maintains a simple alkane solvent, preferably decane, to avoid the rewetting phenomenon caused by the polar molecules in the non-polar liquid and the insulating hydrophobic layer under the pressurized state.
  • the polar electrolyte solution and the non-polar liquid are arranged left and right, and a three-phase contact line is formed on the surface of the polar electrolyte solution, the non-polar liquid and the hydrophobic insulating layer. Only a very low potential energy is needed on this contact line to make the polar electrolyte solution wet the surface of the hydrophobic insulating layer. That is, in general, while the opening voltage of the electrowetting display device in the present invention is reduced, its grayscale controllability is maintained when it is in the working state.
  • the display device of the present invention when the electrowetting display device of the present invention is applied to text display, the display device changes from white before pressure to black after pressure, which is more in line with the daily use habits of traditional paper. For example, when displaying text content, more than 80% of the pixels of the electrowetting device of the present invention are in a closed state, which has certain energy saving properties.
  • Traditional electrowetting displays need to pressurize the pixels of non-text and graphic parts to turn white, and turn off the voltage of the corresponding pixels to display the corresponding pattern. In comparison, traditional electrowetting display devices have a large energy consumption.

Landscapes

  • Physics & Mathematics (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)

Abstract

本发明公开了一种电润湿显示器件及其制备方法与应用。所述电润湿显示器件包括第一基板、第二基板以及设于所述第一基板与第二基板之间的若干个显示单元，所述显示单元包括密封腔，所述密封腔内填充极性流体和非极性流体，所述第一基板和第二基板之间未施加电压时，所述极性流体和非极性流体的排布方向与所述第一基板和第二基板的排布方向形成θ的夹角，θ＞0°。本发明中的极性流体、非极性流体与第一基板或第二基板表面会形成一个三相接触线，在这个接触线上只需要很低的势能就可以实现流体的移动或再润湿，使得电润湿显示器件开口电压较低。

Description

一种电润湿显示器件及其制备方法与应用 技术领域
本发明属于电润湿显示技术领域，具体涉及一种电润湿显示器件及其制备方法与应用。
背景技术
目前传统的电润湿显示器件的基本结构如图1所示，基本结构是由上下两基板中填充特定溶液所形成的密封腔，该特定溶液包含两种互不相溶的极性电解质溶液04和非极性液体05。上基板包含支撑板01与第一电极02，下基板包含支撑板09、第二电极08、疏水绝缘层07与像素墙06，两基板中间由特定溶液相连接，并由密封胶03封闭。像素墙06中的各个像素格中均匀填充着非极性液体05，由于像素墙06材料具有亲水性，两两相邻的非极性液体05皆被像素墙06所隔断，流动相的极性电解质溶液04覆盖于像素墙06之上。由于极性电解质溶液04与第一电极02相通，当在第一电极02与第二电极08之间施加电压时，极性电解质溶液04的润湿性能发生改变，由原来的疏水状态变为亲水状态，从而使得极性电解质溶液04润湿于疏水绝缘层07表面，且每一像素格内的非极性液体05则都被挤至一角。反之，第一电极02与第二电极08未施压状态时，则极性电解质溶液04保持疏水状态，覆盖于像素墙06之上，非极性液体05处于铺展状态。即通过加压方式使得该显示器件处于打开状态，未加压时该显示器件则处于关闭状态。由于传统电润湿显示器件中极性电解质溶液04和非极性液体05为上下堆叠结构，因此当施加电压时，需要足够多的势能才能造成非极性液体05膜层的破裂进而使极性电解质溶液04润湿疏水绝缘层07表面，因此开口电压较高。
发明内容
本发明旨在至少解决上述现有技术中存在的技术问题之一。为此，本发明提出一种电润湿显示器件，具有开口电压较低的特点。
本发明还提出一种电润湿显示器件的制备方法。
本发明还提出上述电润湿显示器件的应用。
本发明的第一方面，提出了一种电润湿显示器件，包括第一基板、第二基板以及设于所述第一基板与第二基板之间的若干个显示单元，所述显示单元包括密封腔，所述密封腔内填充极性流体和非极性流体，所述第一基板和第二基板之间未施加电压时，所述极性流体和非 极性流体的排布方向与所述第一基板和第二基板的排布方向形成θ的夹角，θ＞0°。
根据本发明实施例的电润湿显示器件，至少具有以下有益效果：
本发明中，极性流体和非极性流体的排布方向与第一基板和第二基板的排布方向形成大于零度的夹角，极性流体、非极性流体与第一基板或第二基板表面会形成一个三相接触线，在这个接触线上只需要很低的势能就可以实现流体的移动或再润湿，使得电润湿显示器件开口电压降低，开口电压较低。
在本发明的一些实施方式中，90°≥θ≥60°。
在本发明的一些更优选的实施方式中，θ＝90°。
通过上述实施方式，相较于传统电润湿显示器件中极性流体和非极性流体的上下堆叠结构(与第一基板和第二基板的排布方向一致)，本发明中电润湿显示器件的第一基板和第二基板之间未施加电压时，极性流体和非极性流体呈左右排布(横向排布，与第一基板和第二基板的排布方向垂直)，开口电压明显降低。
在本发明的一些实施方式中，所述第一基板和第二基板相平行。
在本发明的一些实施方式中，所述极性流体具有颜色。每个显示单元中的极性流体独立地具有不同或相同的颜色，包括但不限于黄色、红色、蓝色、洋红(或品红)色或青色等。
传统的电润湿显示器件中，通常极性流体为透明状，非极性流体为黑色或彩色的非极性溶液。其中，非极性溶液中的彩色溶质多为蒽醌类、偶氮类或者苝系小分子化合物，且为了满足400-800nm范围特殊波段的光吸收，会加入金属离子等进行分子设计。但这种分子极易造成正负电荷中心不重合，从整个分子来看，电荷的分布是不均匀的、不对称的，这样的分子为极性分子，在电场的作用下容易产生极化，对显示器件的显示效果有一定的干扰，从而无法实现显示器件的灰阶控制。具体地，在传统的电润湿显示器件中，如图1中所示，当施加一个电压在第一电极02和第二电极08之间时，极性电解质溶液04在电场作用下改变了在疏水绝缘层07表面的润湿性，从而使非极性液体05被推到像素格角落中，但因为非极性液体05中所含的极性分子在电场作用下也产生极化现象，从而重新润湿疏水绝缘层07的表面，使电润湿显示器件处于开启状态时，非极性液体05不能稳定地维持在像素格内一角，对显示效果有一定的干扰，从而无法实现显示器件的灰阶控制，严重时器件的像素开口率和反射率都将受到极大的影响。
而本发明中，极性流体具有颜色，非极性流体为透明状，本发明首先对填充溶液进行改进，将原先彩色的非极性液体更改为透明非极性流体，将原先透明的极性电解质溶液更改为彩色的极性流体。本发明避免了传统电润湿器件在加压状态下非极性液体中的极性分子与上 下基板产生的再润湿现象，使电润湿显示器件的性能得到提升，使显示器件能够在驱动过程中保持图像灰阶的稳定状态，保持其在工作状态时灰阶可控性。当本发明中的电润湿显示器件如应用于文字显示时，显示器可由加压前的白色转变成加压后的黑色，较为符合日常传统纸张的使用习惯，例如当显示文字内容时，本发明中电润湿显示器件约80％以上像素处于关闭状态，具有一定的节能性。传统的电润湿显示器需加压使非文字图文部分像素格成白色，关闭相应像素格的电压才显示相应图案，相比之下，传统电润湿显示器件能量能耗较大。
在本发明的一些实施方式中，所述极性流体为极性电解质溶液。
在本发明的一些优选的实施方式中，所述极性电解质溶液包括染料和极性溶剂。
在本发明的一些更优选的实施方式中，所述极性溶剂包括水或醇类溶剂；优选地，所述染料包括水溶性染料。
在本发明的一些更优选的实施方式中，所述醇类溶剂包括乙二醇。
在本发明的一些实施方式中，所述非极性流体为透明的流体。
在本发明的一些实施方式中，所述非极性流体包括烷烃类物质。优选地，所述非极性流体为烷烃类物质。
通过上述实施方式，在极性电解质溶液中添加水溶性染料，非极性流体保持单纯烷烃类溶剂，避免了在加压状态下非极性流体中的极性分子与第二基板(如包括绝缘疏水层)产生的再润湿现象，提升电润湿显示器件的性能，使显示器能够在驱动过程中保持图像灰阶的稳定状态。
彩色极性电解质溶液、透明非极性流体和疏水绝缘层表面会形成一个三相接触线，在这个接触线上只需要很低的势能就可以使极性电解质溶液润湿疏水绝缘层表面，降低了器件的开口电压。
本发明如应用于文字显示时，显示器由加压前的白色转变成加压后的黑色，较为符合日常传统纸张的使用习惯，例如当显示文字内容时，本发明中电润湿器件约80％以上像素处于关闭状态，具有一定的节能性。传统的电润湿显示器需加压使非文字图文部分像素格成白色，关闭相应像素格的电压才显示相应图案，相比之下，传统电润湿显示器件能量能耗较大。
在本发明的一些优选的实施方式中，所述非极性流体包括C6-C14烷烃中的至少一种。
在本发明的一些更优选的实施方式中，所述非极性流体包括辛烷、庚烷、癸烷、十一烷或十二烷中的至少一种。
在本发明的一些更优选的实施方式中，所述非极性流体为癸烷。
在本发明的一些实施方式中，所述第一基板包括依次设置的第一基础板和第一电极层。 所述第一电极层位于所述第一基础板靠近所述第二基板的一侧。优选地，所述第一电极层与所述非极性流体相接触。
在本发明的一些优选的实施方式中，所述第一基板包括依次层叠设置的第一基础板和第一电极层。
在本发明的一些实施方式中，所述第二基板包括依次设置的第二基础板和疏水绝缘层。所述疏水绝缘层位于所述第二基础板靠近所述第一基板的一侧。优选地，所述疏水绝缘层与所述极性流体相接触。
所述第一基板和第二基板之间未施加电压时，所述极性流体、非极性流体和疏水绝缘层间形成三相接触线。
在本发明的一些优选的实施方式中，所述第二基础板和疏水绝缘层之间设有第二电极层。
在本发明的一些优选的实施方式中，所述第二基板包括依次层叠设置的第二基础板、第二电极层和疏水绝缘层。
在本发明的一些实施方式中，所述显示单元还包括像素墙组件，所述密封腔包括相互连通的第一密封腔和第二密封腔，所述像素墙组件的组件之间形成所述第一密封腔，所述像素墙组件与第一基板、第二基板之间形成所述第二密封腔。
需要说明的是，像素墙组件中的内部组件之间形成所述第一密封腔。具体地，一组所述像素墙组件包括若干个组件，一组所述像素墙组件的组件之间形成所述第一密封腔。此外，以一组所述像素墙组件为整体，所述像素墙组件与第一基板、第二基板之间形成所述第二密封腔。
在本发明的一些优选的实施方式中，所述第一密封腔内填充极性流体，所述第二密封腔内填充非极性流体。
在本发明的一些优选的实施方式中，所述像素墙组件包括间隔设置于所述第一基板和第二基板之间的第一亲水件和第二亲水件，所述第一亲水件与第二基板之间具有设定距离，所述第二亲水件的亲水性大于所述第一亲水件的亲水性。
所述第一亲水件与第二基板之间具有设定距离是指第一亲水件与第二基板之间不接触，两者之间具有一定的距离，所述距离可根据实际情况进行设置、选取合适的距离大小。第一亲水件和第二亲水件均为绝缘亲水件。优选地，一组所述像素墙组件包括相邻的一个第一亲水件和一个第二亲水件。
在本发明的一些更优选的实施方式中，相邻的第一亲水件和第二亲水件之间形成所述第一密封腔。
由于，第一亲水件和第二亲水件为间隔设置方式，具体而言，第一基板、相邻的第一亲水件和第二亲水件、以及第二基板之间形成所述第一密封腔。
在本发明的一些更优选的实施方式中，所述第一亲水件与所述第一基板相连接；或者，所述第一亲水件与所述第一基板之间具有设定距离。
所述第一亲水件与所述第一基板之间具有设定距离是指第一亲水件与第一基板之间不接触，两者之间具有一定的距离，所述距离可根据实际情况进行设置、选取合适的距离大小。
在本发明的一些更优选的实施方式中，所述第二亲水件与第二基板相连接。
在本发明的一些更优选的实施方式中，所述第二亲水件与所述第一基板相连接；或者，所述第二亲水件与所述第一基板之间具有设定距离。
所述第二亲水件与第一基板之间具有设定距离是指第二亲水件与第一基板之间不接触，两者之间具有一定的距离，所述距离可根据实际情况进行设置、选取合适的距离大小。
在本发明的一些更优选的实施方式中，所述第二亲水件的两端分别与第一基板和第二基板相连。
在本发明的一些更优选的实施方式中，所述第一亲水件包括第一像素墙。
在本发明的一些更优选的实施方式中，所述第二亲水件包括第二像素墙。
在本发明的一些优选的实施方式中，所述第一密封腔内设有导电件，所述导电件与所述第一基板电连接。优选地，所述导电件与所述第一电极层相连。所述导电件为导电柱。优选地，所述导电柱为导电胶层柱。优选地，所述导电件位于相邻的所述第一亲水件和所述第二亲水件之间。
在本发明的一些更优选的实施方式中，所述导电件与所述第二基板之间具有设定距离。导电件与第二基板之间具有设定距离是指导电件与第二基板之间不接触，两者之间具有一定的距离，所述距离可根据实际情况进行设置、选取合适的距离大小。
在本发明的一些实施方式中，每个所述显示单元包括对称设置的两组像素墙组件。
通过上述实施方式，每个显示单元包括对称设置的两组像素墙组件是指，每个显示单元包括两个第一亲水件(第一亲水件Ⅰ和第一亲水件Ⅱ)、两个第二亲水件(第二亲水件Ⅰ和第二亲水件Ⅱ)、两个导电柱(导电柱Ⅰ和导电柱Ⅱ)、两个第一密封腔(第一密封腔Ⅰ和第一密封腔Ⅱ)和一个第二密封腔，每个显示单元中：第一基板与第二基板之间，自第一基板的一端至其另一端的方向，依次间隔设置第二亲水件Ⅰ、导电柱Ⅰ、第一亲水件Ⅰ、第一亲水件Ⅱ、导电柱Ⅱ、第二亲水件Ⅱ，所述显示单元的密封腔包括依次连通的第一密封腔Ⅰ、第二密封腔和第一密封腔Ⅱ，其中，第二亲水件Ⅰ、第一亲水件Ⅰ、第一基板与第二基板之间形成第一密封腔Ⅰ；第一亲 水件Ⅰ、第一亲水件Ⅱ、第一基板与第二基板之间形成第二密封腔；第一亲水件Ⅱ、第二亲水件Ⅱ、第一基板与第二基板之间形成第一密封腔Ⅱ。
在本发明的一些实施方式中，所述电润湿显示器件还包括若干个间隔设置于所述第一基板和第二基板之间的隔板，所述第一基板和第二基板相向的一侧分别与所述隔板相连，且，所述隔板与所述组像素墙组件垂直设置。优选地，所述隔板与所述第二亲水件垂直相连。优选地，所述隔板与第一基板的第一电极层、第二基板的疏水绝缘层均相连。
通过上述实施方式，电润湿显示器件的中部中：所述第一基板、相邻的两个隔板、第二基板和位于一个显示单元边部的两个第二亲水件合围形成一个所述显示单元；电润湿显示器件的边部部分：所述第一基板、相邻的两个隔板(或一个隔板)、第二基板和位于一个显示单元边部的一～两个第二亲水件合围形成所述显示单元，或/和，所述第一基板、一个隔板、第二基板和位于一个显示单元边部的两个第二亲水件(或一个第二亲水件)合围形成所述显示单元。
在本发明的一些优选的实施方式中，所述第一亲水件与相邻的两个隔板的侧面均相连，所述第二亲水件与相邻的两个隔板的侧面均相连。
在本发明的一些实施方式中，所述电润湿显示器件还包括密封胶框，所述第一基板和第二基板的四周通过密封胶框相连接。
通过上述实施方式，电润湿显示器件的边部部分：所述第一基板、隔板、第二亲水件、第二基板和密封胶框合围形成所述显示单元。
在本发明的一些优选的实施方式中，所述第一基板和第二基板通过密封胶粘接，所述密封胶组成密封胶框。
本发明的第二方面，还提出一种电润湿显示器件的制备方法，包括如下步骤：将第一基板和第二基板，组装，得到所述电润湿显示器件。
在本发明的一些实施方式中，所述制备方法包括如下步骤：
S1，取第一基板；
S2，取带有像素墙组件的第二基板；
S3，取步骤S1得到的第一基板与步骤S2得到的第二基板，组装，得到所述电润湿显示器件。
在本发明的一些优选的实施方式中，步骤S2中，包括制备带有像素墙组件的第二基板，其中，采用牺牲层的方式制得带有像素墙组件的第二基板。
在本发明的一些优选的实施方式中，所述第二基板包括依次层叠设置的第二基础板、第 二电极层和疏水绝缘层。
在本发明的一些优选的实施方式中，像素墙组件包括第一亲水件和第二亲水件，步骤S2中，制备带有像素墙组件的第二基板包括如下操作：
S2-1，对第二基板的疏水绝缘层进行亲水改性；
S2-2，于亲水改性后的疏水绝缘层上旋涂光刻胶Ⅰ，得到淀积结构层，对淀积结构层进行刻蚀，得到带有第二亲水件的亲水改性疏水绝缘层；
S2-3，于步骤S2-2得到的亲水改性疏水绝缘层上制备牺牲层，再于牺牲层上旋涂光刻胶Ⅱ，得到带有第一亲水件的亲水改性疏水绝缘层；
S2-4，采用加热的方式对步骤S2-3得到的亲水改性疏水绝缘层进行改性，得到带有第一亲水件和第二亲水件的疏水绝缘层。
其中，步骤S2-1中对疏水绝缘层进行改性，使该层更具亲水性，便于后续像素墙组件的制作(如第一亲水件和第二亲水件)。
在本发明的一些更优选的实施方式中，步骤S2-2中，光刻胶Ⅰ包括Surflon材料或/和Novec材料。
在本发明的一些更优选的实施方式中，步骤S2-3中，于牺牲层上旋涂光刻胶Ⅱ，去除牺牲层，得到带有第一亲水件的亲水改性疏水绝缘层。
在本发明的一些更优选的实施方式中，步骤S2-4中，加热的温度高于疏水绝缘层的玻璃化温度。
在本发明的一些优选的实施方式中，步骤S2中，先制备第二基板，再于第二基板上制备像素墙组件，其中第二基板的制备方法包括如下操作：取第二基础板，涂覆疏水绝缘层的原料液，固化，得到第二基板。优选地，所述涂覆方式为旋涂，所述原料液包括含氟涂料或Hyflon材料。
在本发明的一些优选的实施方式中，步骤S1中，于第一基板上制备导电件，得到连接有导电件的第一基板。优选地，制备导电件具体包括如下步骤：于第一基板上旋涂导电光刻胶，前烘，光刻，后烘，显影，得到所述导电件。优选地，第一基板与导电件电连接。
在本发明的一些更优选的实施方式中，步骤S1中，于第一基板上制备导电件，具体包括如下步骤：
S1-1，旋涂：于第一基板上旋涂导电光刻胶，得到中间件Ⅰ；
S1-2，前烘：将中间件Ⅰ进行加热前烘处理，得到中间件Ⅱ；
S1-3，光刻：对中间件Ⅱ于光刻机中进行曝光处理，得到中间件Ⅲ；
S1-4，后烘：将中间件Ⅲ进行加热后烘处理，得到中间件Ⅳ；
S1-5，显影：对中间件Ⅳ于显影机中进行显影处理，得到中间件Ⅴ；
S1-6，固化：将中间件Ⅴ固化，得到带有导电件的第一基板。
在本发明的一些更优选的实施方式中，步骤S1-1中，所述导电光刻胶为负性导电光刻胶。
在本发明的一些更优选的实施方式中，步骤S1-1中，旋涂厚度为30-2000nm。
在本发明的一些更优选的实施方式中，步骤S1-1中，旋涂速度为500-2000r/min。
在本发明的一些更优选的实施方式中，步骤S1-2中，所述前烘温度为100-120℃，前烘时间为2-4min。
在本发明的一些更优选的实施方式中，步骤S1-3中，所述曝光的光强为15.0-22.0mW/cm2，光刻时间为15-20s。
在本发明的一些更优选的实施方式中，步骤S1-4中，所述后烘温度为100-120℃，后烘时间为2-4min。
在本发明的一些更优选的实施方式中，步骤S1-5中，所述显影处理包括将中间件Ⅳ浸于0.4％KOH中1min后摇晃1min，再使用0.4％KOH冲洗10s后，摇晃20s，使用水冲洗1min。
在本发明的一些实施方式中，步骤S3中，步骤S2得到的带有像素墙组件的第二基板包括第一密封腔前体和第二密封腔前体，向所述第一密封腔前体和第二密封腔前体中分别填充极性流体和非极性流体，与步骤S1得到的第一基板组装、采用密封胶密封，得到第一密封腔和第二密封腔，得到所述电润湿显示器件。
本发明的第三方面，提出了上述电润湿显示器件在电润湿显示、LED或LCD显示技术领域中的应用。
附图说明
下面结合附图和实施例对本发明做进一步的说明，其中：
图1为传统电润湿显示器件的结构示意图；
图2为本发明实施例1的电润湿显示器件的截面结构示意图；
图3为本发明实施例1的电润湿显示器件的显示单元的截面结构示意图；
图4为本发明实施例1的电润湿显示器件未加电状态的俯视示意图；
图5为本发明实施例1的电润湿显示器件的单个像素格加压前后变化对比示意图；
图6为本发明实施例1的电润湿显示器件加压前后变化对比俯视示意图；
图7为本发明实施例1的电润湿显示器件中带有导电柱的第一基板的截面结构示意图；
图8为本发明实施例1的电润湿显示器件中像素墙组件的制备流程示意图；
图9为本发明实施例1的电润湿显示器件中带有像素墙组件的第二基板的截面结构示意图；
图10为本发明实施例1的电润湿显示器件中单个显示单元的截面结构示意图一；
图11为本发明实施例1的电润湿显示器件中单个显示单元的截面结构示意图二；
图12为本发明实施例1的电润湿显示器件中单个显示单元的截面结构示意图三；
图13为本发明实施例2的电润湿显示器件的截面结构示意图。
附图标记：1、第一基础板；2、第一电极层；3、密封胶框；4、极性电解质溶液；5、非极性液体；7、疏水绝缘层；8、第二电极层；9、第二基础板；10、第一亲水件；11、导电胶层柱；12、第二亲水件；13、三相接触线；14、隔板；16、牺牲层。
具体实施方式
以下将结合实施例对本发明的构思及产生的技术效果进行清楚、完整地描述，以充分地理解本发明的目的、特征和效果。显然，所描述的实施例只是本发明的一部分实施例，而不是全部实施例，基于本发明的实施例，本领域的技术人员在不付出创造性劳动的前提下所获得的其他实施例，均属于本发明保护的范围。
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本发明，而不能理解为对本发明的限制。
在本发明的描述中，需要理解的是，涉及到方位描述，例如上、下、前、后、左、右等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
在本发明的描述中，若干的含义是一个以上，多个的含义是两个以上，大于、小于、超过等理解为不包括本数，以上、以下、以内等理解为包括本数。如果有描述到第一、第二只是用于区分技术特征为目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量或者隐含指明所指示的技术特征的先后关系。
本发明的描述中，除非另有明确的限定，设置、安装、连接等词语应做广义理解，所属技术领域技术人员可以结合技术方案的具体内容合理确定上述词语在本发明中的具体含义。
下列实施例中未注明具体条件的实验方法，通常按照本领域常规条件或按照制造厂商建议的条件；所使用的原料、试剂等，如无特殊说明，均为可从常规市场等商业途径得到的原料和试剂。
实施例1
本实施例公开了一种电润湿显示器件，其截面示意图如图2所示，电润湿显示器件包括第一基板、第二基板以及设于第一基板与第二基板之间的若干个显示单元。
第一基板和第二基板相平行，所述第一基板包括依次层叠设置的第一基础板1和第一电极层2，第一电极层2位于第一基础板1靠近第二基板的一侧。所述第一密封腔内设有导电柱11，为导电胶层柱，导电柱与第一电极层2相连。所述第二基板包括依次层叠设置的第二基础板9、第二电极层8和疏水绝缘层7。所述疏水绝缘层7位于第二基础板9靠近第一基板的一侧。
显示单元包括密封腔和像素墙组件，密封腔包括相互连通的第一密封腔和第二密封腔，像素墙组件与第一基板、第二基板之间形成第二密封腔，像素墙组件包括间隔设置于第一基板和第二基板之间的第一亲水件10(第一像素墙)和第二亲水件12(第二像素墙)，第一亲水件10与第二基板之间具有设定距离(所述设定距离可为20-100μm)，第二亲水件12的亲水性大于所述第一亲水件10的亲水性。第一亲水件10和第二亲水件12之间形成第一密封腔。具体地，所述显示单元包括对称设置的两组像素墙组件，其横截面示意图如图3所示。每个显示单元中，第一基板与第二基板之间，沿第一基板的一端至另一端的方向，依次间隔设置第二亲水件12、导电柱、第一亲水件10、第一亲水件10、导电柱、第二亲水件12(所述各亲水件和导电柱按前述顺序依次横向排布)，所述显示单元的密封腔包括依次连通的第一密封腔Ⅰ、第二密封腔和第一密封腔Ⅱ。具体地，如图3所示，一个显示单元内，从左至右，第一个第二亲水件、第一个第一亲水件与第一基板、第二基板之间形成第一密封腔Ⅰ；第一个第一亲水件、第二个第一亲水件与第一基板、第二基板之间形成第二密封腔；第二个第一亲水件、第二个第二亲水件与第一基板、第二基板之间形成第一密封腔Ⅱ。
第一密封腔内填充极性流体，第二密封腔内填充非极性流体。极性流体为具有颜色的极性电解质溶液4。每个显示单元中的极性电解质溶液4独立地具有不同或相同的颜色，包括但不限于黄色、红色、蓝色、洋红(或品红)色、青色或黑色等。所述极性电解质溶液4包括水溶性染料和极性溶剂(如水或醇类溶剂，其中，醇类溶剂如乙二醇等)。所述非极性流体为透明的非极性液体5，为癸烷(C6-C14的烷烃均可)。其中，所述可溶性染料可采用溶于水但是不溶于所述非极性流体的染料均可，如黄色、品红色、蓝色或黑色等。本实施例中具 体采用的水溶性染料可从常规市场等商业途径得到，具体可选但不限于：酸性黄，阿拉丁，A330858；酸性品红，阿拉丁，A104916；酸性黑24，阿拉丁，A355221。极性电解质溶液4中，水溶性染料的质量百分数可为5-10％。
所述电润湿显示器件还包括若干个间隔设置于所述第一基板和第二基板之间的隔板14，所述第一基板和第二基板相向的一侧分别与所述隔板14相连，且，所述隔板与所述组像素墙组件垂直设置。具体地，隔板14与第二亲水件12垂直相连，隔板14与第一基板的第一电极层2相连，隔板14与第二基板的疏水绝缘层7相连。
具体地，电润湿显示器件的中部中：第一基板、相邻的两个隔板14、第二基板和位于一个显示单元边部的两个第二亲水件12合围形成所述显示单元；电润湿显示器件的边部部分：第一基板、相邻的两个隔板14(或一个隔板14)、第二基板和位于一个显示单元边部的一个(或两个)第二亲水件12合围形成所述显示单元，或/和，所述第一基板、一个隔板14、第二基板和位于一个显示单元边部的两个第二亲水件12(或一个第二亲水件12)合围形成所述显示单元。
其中，第一亲水件10与第一电极层2、疏水绝缘层7均不相连，第一亲水件10与相邻的两个隔板14的侧面均相连，其中，第一亲水件为第一像素墙(为亲水材料)，第一基板和第二基板之间未施加电压时，第一亲水件10的顶端和底端均与极性电解质溶液4相接触。第二亲水件12的底端与疏水绝缘层7相连，顶端与极性电解质溶液4相接触，第二亲水件12与相邻的两个隔板14的侧面均相连，其中，第二亲水件12为第二像素墙(为强亲水材料)。
所述电润湿显示器件还包括密封胶框3，所述第一基板和第二基板的四周通过密封胶框3连接，所述第一基板和第二基板通过密封胶粘接，所述密封胶组成密封胶框3。电润湿显示器件的边部部分：所述第一基板、隔板14、第二亲水件12、第二基板和密封胶框合围形成所述显示单元。
第一基板和第二基板之间未施加电压时，极性流体和非极性流体的排布方向与第一基板和第二基板的排布方向形成θ的夹角，θ＝90°，所述极性流体、非极性流体和疏水绝缘层7间形成三相接触线13。
所述电润湿显示器件的驱动与显示原理如图4-6所示：
图4为电润湿显示器件未加电状态的俯视图，每一个小格代表一个像素格(即显示单元)。每一个像素格中，左右两侧都将填充彩色极性电解质溶液4，中间填充透明的非极性液体5。像素墙包含两种材料：强亲水材料与亲水材料，分别为第二亲水件12和第一亲水件10。像 素格的总体采用亲水材料，第二亲水件12采用强亲水材料，第一亲水件10采用亲水材料。其中，第二亲水件12主要采用强亲水负性光刻胶HN-018N，此类材料由于其中所含有的亲氟基团亲水基团能够增加一定的亲水性能，使其接触角在50度～65度，而在第一亲水件10中则采用亲水光刻胶HN-0081N负性光刻胶，接触角在70度～108度之间。其中，HN-018N、HN-0081N光刻胶，均购自潍坊星泰克微电子材料有限公司。
透明的非极性液体5由于疏水绝缘层7表面的亲油疏水性更加倾向于留在第一亲水件10所包围的腔体中(第二密封腔)，彩色极性电解质液体4由于第二亲水件12的强亲水性以及第二亲水件12与第一亲水件10形成的毛细力作用，更加倾向于留在两侧墙体内(第一密封腔)。当对电润湿显示器件上第一电极层2和第二电极层8进行加压后，彩色极性电解质溶液4在电场作用下润湿疏水绝缘层7表面而取代非极性液体5在疏水绝缘层7表面区域从而显示打开状态，如图5、6中彩色极性电解质溶液4’。其中，图5中：左图为第一电极层2和第二电极层8未加压时单个像素格状态图，右图为第一电极层2和第二电极层8加压时单个像素格状态图。图6中：左图为第一电极层2和第二电极层8未加压时电润湿显示器件俯视示意图，右图为第一电极层2和第二电极层8加压时电润湿显示器件俯视示意图。
关于导电胶层柱11，无论是施加正向电压还是反向偏压，疏水绝缘层7表面液滴的接触角将随电压的不断增加而不断减小，接触角将由初始的疏水状态降低到亲水状态。施加电压前液滴通常处于静态接触角的平衡态，施加电压后，在电润湿力的作用下，整个液滴的铺展由前进角主导，直到达到加电状态三相接触线13附近力学平衡时的前进角，而当撤除电压后，液滴在表面张力的作用下的整个收缩过程由后退角主导，直至达到未加电状态下的后退角。导电胶层柱11可以在一定程度扩大与极性电解质溶液4的接触面积，加快反应速度，减小电润湿作用的滞后效果。并且导电胶层柱11的设立能够使得电润湿调控接触角的范围增大，一定程度保证了电润湿的可逆性。
本发明中，在极性电解质溶液4中添加水溶性染料，非极性液体5选用癸烷，避免了在加压状态下非极性液体中的极性分子与绝缘疏水层产生的再润湿现象，提升电润湿显示器件的性能，使显示器能够在驱动过程中保持图像灰阶的稳定状态。将极性电解质溶液4和非极性液体5左右排布，在极性电解质溶液4、非极性液体5和疏水绝缘层7表面会形成一个三相接触线13，在这个接触线上只需要很低的势能就可以使极性电解质溶液4润湿疏水绝缘层7表面，降低了器件的开口电压。因此本发明中电润湿显示器件的性能得到提升，使显示器能够在驱动过程中保持图像灰阶的稳定状态，使得电润湿显示器件开口电压降低的同时，保持其在工作状态时灰阶可控性。
关于本实施例中电润湿显示器件的制备过程，其中，
制作器件前期主要是进行彩色极性电解质溶液4与透明非极性液体5的配制，与一般电润湿器件材料不同的是，本实施例中在极性电解质溶液4中添加彩色溶质使得极性电解质溶液4具有特定的颜色，而在非极性液体5中不添加彩色物质，令其保持透明。该步骤的实施使得本实施例中的电润湿显示器件与传统的电润湿显示器件开启与关闭时刻的显示模式相反，本实施例中，屏幕为白色时，显示器件处于关闭状态，屏幕为彩色状态时，显示器件处于开启状态。
具体地，本实施例中的电润湿显示器件的制备过程，包括如下步骤：
1、第一基板的制备步骤，与传统电润湿显示器件相同的是：玻璃基板上有一层导电层(作为第一电极层2使用)，在此基础上，使用旋涂导电光刻胶和光刻工艺进行导电胶层柱11的制备，含有导电胶层柱的第一基板的制备具体包括如下操作：
(1)清洗：清洗ITO玻璃基板，除掉有机和无机杂质，得到第一基板；
(2)旋涂：对第一基板进行导电光刻胶的旋涂，选用负性导电光刻胶，厚度一般在500nm左右，相应的旋涂速度在1000r/min；
(3)前烘：旋涂完毕后，在热板上进行一定时间的前烘处理，设置热板温度在110℃，时间控制在2min30s；
(4)光刻：将步骤(3)得到的第一基板放置于光刻机中进行曝光处理，光强设置为16mW/cm2，光刻时间为16s；
(5)后烘：采取后烘处理消除一定驻波效应，热板温度设置110℃后，放置2min30s；
(6)显影：将步骤(5)得到的第一基板放置于显影机中进行显影处理，使用0.4％KOH溶液进行显影，将其浸在0.4％KOH中1min后摇晃1min，再将其使用0.4％KOH冲洗10s后，摇晃20s使用纯水冲洗1min，则完成导电柱11结构的制备；
(7)固化：最后将其固化，完成机械强度增强，完成上基板的制备。
最终制得的带有导电柱的第一基板的结构示意图，如图7所示。
2、带有像素墙组件的第二基板的制备步骤，具体包括如下操作：
(1)清洗：清洗ITO玻璃基板，除掉有机和无机杂质，得到含有第二电极层的第二基础板；
(2)旋涂：旋涂疏水绝缘层7原料液，原料液的材料优选AF或Hyflon材料，厚度一般 在为600nm左右，旋涂转速一般AF材料为1400r/min，Hyflon材料为1000r/min，旋涂时间约65s，旋涂结束后将其放在热板上进行预固化处理(110℃，放置2min30s)；
(3)改性：将步骤(2)得到的第二基板放置于反应离子刻蚀机中进行改性操作，将设备功率设置为6W，时间为5s，该步骤用以提高其表面的润湿性，利于后续光刻胶的均匀成膜。
(4)像素墙、隔板制备：在改性完成的疏水绝缘层7上进行像素墙的制备，主要采用牺牲层等方式完成第二亲水件12、第一亲水件10以及隔板14的工艺制作，像素墙流程图制作截面示意图如图8所示(不显示隔板14)，具体包括：
a)在改性后的第二基板上旋涂强亲水光刻胶HN-018N，作为以第二亲水件(强亲水材料)12为基底的淀积结构层；
b)将淀积结构层进行刻蚀，使得第二基板只剩余第二亲水件(强亲水材料)12、隔板14；
c)在第二亲水件12附近淀积牺牲层16；
d)在牺牲层16上方淀积第一亲水件(亲水材料)10；
e)释放多余的牺牲层；
(5)高温处理：对像素墙制备完成的第二基板进行高温处理，温度需要超过疏水绝缘层7的Tg温度，使其恢复初始的疏水特性。
最终制得的带有像素墙组件的第二基板，其截面示意图，如图8所示。
3、通过喷墨打印的方式分别将彩色极性电解质溶液4和透明非极性液体5分别填充在像素墙形成的腔体内：第一密封腔和第二密封腔，并将带有密封胶3和第一电极层2的第一基板，与第二基板进行对位压合，完成电润湿器件的制备过程，最终效果成品示意图如图9所示。
图10为单个像素格所在区域的截面图，从该截面图中可较为清晰地看出像素墙以及填充混合溶液在像素墙的分布结构。透明非极性液体5主要聚集在第一亲水件(亲水材料)10形成的腔体内(第二密封腔)，彩色极性电解质溶液4主要聚集在第二亲水件(强亲水材料)12和第一亲水件(亲水材料)10形成的墙体内(第一密封腔)。
实施例2
本实施例公开了一种电润湿显示器件，其与实施例1的不同之处在于，电润湿显示器件的截面示意图如图13所示：第二亲水件12的顶端与第一电极层2相连接；第一亲水件10的顶端与第一电极层2相连接。
实施例3
本实施例公开了一种电润湿显示器件，其与实施例1的不同之处在于：本实施例中，第二亲水件12的顶端与第一电极层2之间具有设定距离(所述设定距离可为20-100μm)；第一亲水件10的顶端与第一电极层2相连接。
实施例4
本实施例公开了一种电润湿显示器件，其与实施例1的不同之处在于：本实施例中，第二亲水件12的顶端与第一电极层2相连接；第一亲水件10的顶端与第一电极层2之间具有设定距离(所述设定距离可为20-100μm)。
综上，本发明中，为了提升电润湿显示器件的性能，使显示器能够在驱动过程中保持图像灰阶的稳定状态。首先针对极化效应对两相流体进行改进，在极性电解质溶液4中添加水溶性染料，非极性液体保持单纯烷烃类溶剂，优选癸烷，避免了在加压状态下非极性液体中的极性分子与绝缘疏水层产生的再润湿现象。其次，为了降低开口电压，将极性电解质溶液和非极性液体左右排布，在极性电解质溶液、非极性液体和疏水绝缘层表面会形成一个三相接触线，在这个接触线上只需要很低的势能就可以使极性电解质溶液润湿疏水绝缘层表面。即总体而言，本发明中电润湿显示器件开口电压降低的同时，保持其在工作状态时灰阶可控性。
此外，将本发明中的电润湿显示器件如应用于文字显示时，显示器件由加压前的白色转变成加压后的黑色，较为符合日常传统纸张的使用习惯，例如当显示文字内容时本发明中电润湿器件约80％以上像素处于关闭状态具有一定的节能性。传统的电润湿显示器需加压使非文字图文部门像素格成白色，关闭相应像素格的电压才显示相应图案，相比之下，传统电润湿显示器件能量能耗较大。
上面结合附图对本发明实施例作了详细说明，但是本发明不限于上述实施例，在所属技术领域普通技术人员所具备的知识范围内，还可以在不脱离本发明宗旨的前提下作出各种变化。此外，在不冲突的情况下，本发明的实施例及实施例中的特征可以相互组合。

Claims (10)

  1. 一种电润湿显示器件，其特征在于，包括第一基板、第二基板以及设于所述第一基板与第二基板之间的若干个显示单元，所述显示单元包括密封腔，所述密封腔内填充极性流体和非极性流体，所述第一基板和第二基板之间未施加电压时，所述极性流体和非极性流体的排布方向与所述第一基板和第二基板的排布方向形成θ的夹角，θ＞0°。
  2. 根据权利要求1所述的电润湿显示器件，其特征在于，所述极性流体具有颜色；优选地，所述极性流体包括染料和极性溶剂。
  3. 根据权利要求1所述的电润湿显示器件，其特征在于，所述非极性流体为透明的流体；优选地，所述非极性流体包括烷烃类物质；优选地，所述非极性流体包括C6-C14烷烃中的至少一种。
  4. 根据权利要求1所述的电润湿显示器件，其特征在于，所述显示单元还包括像素墙组件，所述密封腔包括相互连通的第一密封腔和第二密封腔，所述像素墙组件的组件之间形成所述第一密封腔，所述像素墙组件与第一基板、第二基板之间形成所述第二密封腔；优选地，所述第一密封腔内填充极性流体，所述第二密封腔内填充非极性流体。
  5. 根据权利要求4所述的电润湿显示器件，其特征在于，所述像素墙组件包括间隔设置于所述第一基板和第二基板之间的第一亲水件和第二亲水件，所述第一亲水件与第二基板之间具有设定距离，所述第二亲水件的亲水性大于所述第一亲水件的亲水性；优选地，所述第二亲水件与第二基板相连接。
  6. 根据权利要求4所述的电润湿显示器件，其特征在于，所述第一密封腔内设有导电件，所述导电件与所述第一基板电连接。
  7. 根据权利要求4所述的电润湿显示器件，其特征在于，所述显示单元包括对称设置的两组像素墙组件。
  8. 根据权利要求1所述的电润湿显示器件，其特征在于，所述电润湿显示器件还包括密封胶框，所述第一基板和第二基板的四周通过密封胶框连接。
  9. 一种如权利要求1所述的电润湿显示器件的制备方法，其特征在于，包括如下步骤：将第一基板和第二基板，组装，得到所述电润湿显示器件。
  10. 如权利要求1-8任一项所述的电润湿显示器件或如权利要求9所述的方法制备得到的电润湿显示器件在电润湿显示、LED或LCD显示技术领域中的应用。
PCT/CN2023/135161 2022-12-01 2023-11-29 一种电润湿显示器件及其制备方法与应用 WO2024114693A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE212023000055.5U DE212023000055U1 (de) 2022-12-01 2023-11-29 Elektrobenetzungsanzeigegerät und Verwendung desselben

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202211526016.7A CN115938315A (zh) 2022-12-01 2022-12-01 一种电润湿显示器件及其制备方法与应用
CN202211526016.7 2022-12-01

Publications (1)

Publication Number Publication Date
WO2024114693A1 true WO2024114693A1 (zh) 2024-06-06

Family

ID=86555201

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2023/135161 WO2024114693A1 (zh) 2022-12-01 2023-11-29 一种电润湿显示器件及其制备方法与应用

Country Status (2)

Country Link
CN (1) CN115938315A (zh)
WO (1) WO2024114693A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115938315A (zh) * 2022-12-01 2023-04-07 华南师范大学 一种电润湿显示器件及其制备方法与应用

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040055891A1 (en) * 2002-09-24 2004-03-25 Pamula Vamsee K. Methods and apparatus for manipulating droplets by electrowetting-based techniques
JP2006276801A (ja) * 2005-03-30 2006-10-12 Sharp Corp 画像表示装置
US20070075922A1 (en) * 2005-09-28 2007-04-05 Jessop Richard V Electronic display systems
CN101726847A (zh) * 2008-10-31 2010-06-09 索尼株式会社 电润湿设备、其驱动方法和采用电润湿设备的装置
KR20110071276A (ko) * 2009-12-21 2011-06-29 엘지디스플레이 주식회사 전기습윤을 이용한 표시패널 및 그 제조방법
US20120154886A1 (en) * 2009-08-14 2012-06-21 University Of Cincinnati Display pixels, displays, and methods of operating display pixels
CN103270445A (zh) * 2010-12-16 2013-08-28 太阳化学公司 用于电湿润、电流体和电泳技术的着色金属有机液体
CN203259713U (zh) * 2013-05-28 2013-10-30 东南大学 一种柔性电润湿显示装置
US10365472B1 (en) * 2015-12-29 2019-07-30 Amazon Technologies, Inc. Electrowetting display device having increased viewing performance
CN115938315A (zh) * 2022-12-01 2023-04-07 华南师范大学 一种电润湿显示器件及其制备方法与应用

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040055891A1 (en) * 2002-09-24 2004-03-25 Pamula Vamsee K. Methods and apparatus for manipulating droplets by electrowetting-based techniques
JP2006276801A (ja) * 2005-03-30 2006-10-12 Sharp Corp 画像表示装置
US20070075922A1 (en) * 2005-09-28 2007-04-05 Jessop Richard V Electronic display systems
CN101726847A (zh) * 2008-10-31 2010-06-09 索尼株式会社 电润湿设备、其驱动方法和采用电润湿设备的装置
US20120154886A1 (en) * 2009-08-14 2012-06-21 University Of Cincinnati Display pixels, displays, and methods of operating display pixels
KR20110071276A (ko) * 2009-12-21 2011-06-29 엘지디스플레이 주식회사 전기습윤을 이용한 표시패널 및 그 제조방법
CN103270445A (zh) * 2010-12-16 2013-08-28 太阳化学公司 用于电湿润、电流体和电泳技术的着色金属有机液体
CN203259713U (zh) * 2013-05-28 2013-10-30 东南大学 一种柔性电润湿显示装置
US10365472B1 (en) * 2015-12-29 2019-07-30 Amazon Technologies, Inc. Electrowetting display device having increased viewing performance
CN115938315A (zh) * 2022-12-01 2023-04-07 华南师范大学 一种电润湿显示器件及其制备方法与应用

Also Published As

Publication number Publication date
CN115938315A (zh) 2023-04-07

Similar Documents

Publication Publication Date Title
WO2024114693A1 (zh) 一种电润湿显示器件及其制备方法与应用
US6327072B1 (en) Microcell electrophoretic displays
US6392786B1 (en) Electrophoretic medium provided with spacers
US20030043316A1 (en) Three level stacked reflective display
KR20020073550A (ko) 적층된 액체 셀
CN106773013B (zh) 一种电润湿光学器件及制备方法
CN104849906B (zh) 偏光片及其制造方法、显示装置
US20090040591A1 (en) Electrowetting Display and Methods for Manufacturing the Same
JP2008046588A (ja) ディスプレイパネルおよびその製造方法
CN103605206B (zh) 一种具有纳米金属光栅的电润湿显示单元
US20180088429A1 (en) Color Electronic Paper and Manufacturing Method Thereof
CN110058470B (zh) 一种显示面板及其制作方法和显示设备
US20110013259A1 (en) Manufacturing method for charged particle migration type display panel, charged particle migration type display panel, and charged particle migration type display apparatus
WO2024041674A2 (zh) 一种多层电润湿显示器件及其制备方法与应用
JPH06230398A (ja) 液晶表示素子及びその製造方法
US6803986B2 (en) Method of fabricating a liquid crystal display cell
KR100513085B1 (ko) 외부장 구동 마이크로캡슐형 디스플레이 패널 제조 방법
CN216901262U (zh) 多层液晶盒及液晶显示器
JPS6279421A (ja) カラ−液晶表示体
KR101902199B1 (ko) 전자종이 디스플레이 장치 및 그 제조 방법
KR960000257B1 (ko) 액정표시소자와 그 제조방법
CN110703506B (zh) 液晶显示面板的制作方法、液晶显示面板
CN212540971U (zh) 一种小形变胆甾相液晶显示装置
JP2005275215A (ja) 電気泳動表示装置
TWI385413B (zh) 電潤濕顯示器及其製造方法